UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
 
FORM 10-Q
 
x      QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
 
For the period ended September 30, 2016March 31, 2017
 
OR
 
o        TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
 
For the transition period from          to         
 
Commission file number 1-8993

WHITE MOUNTAINS INSURANCE GROUP, LTD.
(Exact name of Registrant as specified in its charter)
Bermuda 94-2708455
(State or other jurisdiction of (I.R.S. Employer
incorporation or organization) Identification No.)
   
80 South Main Street,  
Hanover, New Hampshire 03755-2053
(Address of principal executive offices) (Zip Code)
 
Registrant’s telephone number, including area code: (603) 640-2200
 
Indicate by check mark whether the Registrant: (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months, and (2) has been subject to such filing requirements for the past 90 days. Yes   ý   No   o
 
Indicate by check mark whether the Registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T during the preceding 12 months. Yes   ý    No   o
 
Indicate by check mark whether the Registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company, or an emerging growth company.  See definitions of “large accelerated filer,” “accelerated filer” and “smaller reporting company” in Rule 12b-2 of the Exchange Act.
Large accelerated filer ý
Accelerated filer o
Non-accelerated filer o
Smaller reporting company o
Emerging growth company o

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.  o
 
Indicate by check mark whether the Registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes  o   No  ý

As of October 31, 2016, 4,565,240April 28, 2017, 4,572,792 common shares with a par value of $1.00 per share were outstanding (which includes 70,61960,139 restricted common shares that were not vested at such date).

WHITE MOUNTAINS INSURANCE GROUP, LTD.

Table of Contents
 
  Page No.
   
PART I.
FINANCIAL INFORMATION
 
   
Item 1.
Financial Statements (Unaudited)
 
   
 
Consolidated Balance Sheets, September 30, 2016March 31, 2017 and December 31, 20152016
1
   
 
Consolidated Statements of Operations and Comprehensive Income,
 
      Three and Nine Months Ended September 30,March 31, 2017 and 2016 and 2015
2
   
 
Consolidated Statements of Changes in Equity, NineThree Months Ended September 30,March 31, 2017 and 2016 and 2015
3
   
 Consolidated Statements of Cash Flows, NineThree Months Ended September 30,March 31, 2017 and 2016 and 2015
4
   
 
Notes to Consolidated Financial Statements
5
   
Item 2.
Management’s Discussion and Analysis of Financial Condition and Results of Operations
5145
   
 Results of Operations for the Three and Nine Months Ended September 30,March 31, 2017 and 2016 and 2015
5145
   
 
Liquidity and Capital Resources
6757
   
 
Fair Value Considerations
7563
   
 
Non-GAAP Financial Measures
7664
   
 
Critical Accounting Estimates
7764
   
 
Forward-Looking Statements
7765
   
Item 3.
Quantitative and Qualitative Disclosures About Market Risk
7866
   
Item 4.
Controls and Procedures
7866
   
PART II.
OTHER INFORMATION
7866
   
Items 1 through 6.
7966
   
SIGNATURES
8068


Part I.FINANCIAL INFORMATION.
Item 1.Financial Statements
WHITE MOUNTAINS INSURANCE GROUP, LTD.
CONSOLIDATED BALANCE SHEETS
(Millions, except share amounts) September 30,
2016		 December 31,
2015		 March 31,
2017		 December 31,
2016
Assets Unaudited  
 Unaudited  
Fixed maturity investments, at fair value $4,131.5
 $2,630.2
 $4,175.4
 $4,250.2
Short-term investments, at amortized cost (which approximates fair value) 305.6
 211.2
 230.9
 287.0
Common equity securities, at fair value 425.0
 1,113.9
 601.0
 474.3
Other long-term investments 351.4
 315.8
 331.7
 323.3
Total investments 5,213.5
 4,271.1
 5,339.0
 5,334.8
Cash (restricted: $0.0 and $5.8) 244.7
 173.0
Cash 125.0
 149.8
Reinsurance recoverable on unpaid losses 169.4
 186.0
 174.7
 172.9
Reinsurance recoverable on paid losses 16.4
 7.5
 3.4
 6.6
Insurance premiums receivable 264.6
 220.3
 227.5
 229.9
Deferred acquisition costs 109.6
 107.6
 110.4
 106.9
Deferred tax asset 119.5
 112.8
 125.5
 126.7
Ceded unearned insurance premiums 35.1
 29.5
 52.4
 44.2
Accrued investment income 18.9
 13.9
 27.2
 26.1
Accounts receivable on unsettled investment sales 179.0
 41.9
 24.5
 6.2
Goodwill and other intangible assets 59.3
 55.4
 53.0
 55.9
Other assets 226.3
 273.2
 254.3
 274.6
Assets held for sale 27.0
 4,790.4
 —
 10.1
Total assets $6,683.3
 $10,282.6
 $6,516.9
 $6,544.7
Liabilities  
  
  
  
Loss and loss adjustment expense reserves $1,362.0
 $1,389.8
 $1,368.8
 $1,365.6
Unearned insurance premiums 674.1
 610.5
 678.1
 658.0
Debt 288.5
 337.6
 284.7
 285.9
Accrued incentive compensation 124.2
 140.7
 83.2
 140.0
Ceded reinsurance payable 28.2
 29.9
Funds held under insurance contracts 156.2
 137.8
 148.7
 153.0
Accounts payable on unsettled investment purchases 30.0
 —
 17.3
 —
Other liabilities 210.9
 220.9
 178.5
 199.9
Liabilities held for sale 7.8
 3,047.4
 —
 5.1
Total liabilities 2,881.9
 5,914.6
 2,759.3
 2,807.5
Equity  
  
  
  
White Mountains’s common shareholders’ equity  
  
  
  
White Mountains’s common shares at $1 par value per share - authorized 50,000,000 shares;  
  
  
  
issued and outstanding 4,578,698 and 5,623,735 shares 4.6
 5.6
issued and outstanding 4,572,792 and 4,563,814 shares 4.6
 4.6
Paid-in surplus 805.2
 972.6
 802.5
 806.1
Retained earnings 2,846.7
 3,084.9
 2,821.8
 2,797.2
Accumulated other comprehensive loss, after tax:        
Net unrealized foreign currency translation losses (.6) (145.6) (.6) (1.4)
Pension liability and other (3.7) (4.3)
Pension liability (3.1) (3.2)
Total White Mountains’s common shareholders’ equity 3,652.2
 3,913.2
 3,625.2
 3,603.3
Non-controlling interests 149.2
 454.8
 132.4
 133.9
Total equity 3,801.4
 4,368.0
 3,757.6
 3,737.2
Total liabilities and equity $6,683.3
 $10,282.6
 $6,516.9
 $6,544.7
 See Notes to Consolidated Financial Statements

WHITE MOUNTAINS INSURANCE GROUP, LTD.
CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS)
Unaudited
 Three Months Ended Nine Months Ended Three Months Ended
 September 30, September 30, March 31,
(Millions, except per share amounts) 2016 2015 2016 2015 2017 2016
Revenues:      
  
    
Earned insurance premiums $281.3
 $284.9
 $838.1
 $896.0
 $264.8
 $282.1
Net investment income 22.5
 16.8
 59.6

42.6
 26.1
 17.9
Net realized and unrealized investment gains (losses) 26.4
 (43.9) 84.0

(33.9)
Net realized and unrealized investment gains 51.3
 29.5
Other revenue 34.8
 38.3
 110.8
 114.4
 43.7
 39.8
Total revenues 365.0
 296.1
 1,092.5
 1,019.1
 385.9
 369.3
Expenses:      
  
    
Loss and loss adjustment expenses 165.0
 170.0
 508.1
 534.1
 151.7
 161.1
Insurance acquisition expenses 56.4
 55.3
 159.2
 166.1
 46.6
 52.7
Other underwriting expenses 49.6
 56.5
 156.0
 165.5
 51.8
 55.4
General and administrative expenses 70.2
 97.3
 230.4
 231.6
 94.2
 87.1
Interest expense 3.8
 3.9
 12.4
 10.8
 3.7
 4.5
Total expenses 345.0
 383.0
 1,066.1
 1,108.1
 348.0
 360.8
            
Pre-tax income (loss) from continuing operations 20.0
 (86.9) 26.4
 (89.0)
Pre-tax income from continuing operations 37.9
 8.5
            
Income tax benefit (expense) 6.7
 1.6
 22.4
 (.8)
Income tax (expense) benefit (3.9) 9.7
            
Net income (loss) from continuing operations 26.7
 (85.3) 48.8
 (89.8)
Net income from continuing operations 34.0
 18.2
            
Gain from sale of Tranzact, net of tax 51.9
 —
 51.9
 —
(Loss) gain from sale of Sirius Group, net of tax (4.0) —
 362.6
 —
Gain from sale of other discontinued operations, net of tax —
 10.3
 —
 18.2
Loss from sale of discontinued operations, net of tax (1.0) —
            
Net income (loss) from discontinued operations, net of tax 14.0
 (3.8) 7.1
 59.1
Net income from discontinued operations, net of tax —
 1.1
            
Income (loss) before equity in earnings of unconsolidated affiliates 88.6
 (78.8) 470.4
 (12.5)
        
Equity in earnings of unconsolidated affiliates, net of tax —
 3.9
 —
 18.0
        
Net income (loss) 88.6
 (74.9) 470.4
 5.5
Net income 33.0
 19.3
Net loss (income) attributable to non-controlling interests 3.1
 16.0
 (24.6) 24.2
 1.3
 (6.3)
            
Net income (loss) attributable to White Mountains’s common shareholders 91.7
 (58.9) 445.8
 29.7
Net income attributable to White Mountains’s common shareholders 34.3
 13.0
            
Other comprehensive income (loss), net of tax:      
  
Change in equity in net unrealized gains (losses) from investments in Symetra common shares, net of tax —
 3.5
 —
 (29.4)
Other comprehensive income, net of tax:    
Change in foreign currency translation, pension liability and other, net of tax .2
 .1
 .3
 .3
 .9
 .1
Change in foreign currency translation and other from discontinued operations, net of tax —
 (18.5) 32.0
 (62.1) —
 37.2
Recognition of foreign currency translation and other from sale of Sirius Group, net of tax —
 —
 113.3
 —
            
Comprehensive income (loss) 91.9
 (73.8) 591.4
 (61.5)
Other comprehensive income (loss) attributable to non-controlling interests .1
 (.1) .1
 (.1)
Comprehensive income (loss) attributable to White Mountains’s common shareholders $92.0
 $(73.9) $591.5
 $(61.6)
Comprehensive income attributable to White Mountains’s common shareholders $35.2
 $50.3
            
Income (loss) per share attributable to White Mountains’s common shareholders      
  
Income per share attributable to White Mountains’s common shareholders    
Basic income (loss) per share            
Continuing operations $6.12
 $(11.10) $4.67
 $(8.01) $7.72
 $2.14
Discontinued operations 12.72
 1.09
 81.60
 12.98
 (.22) .20
Total consolidated operations $18.84
 $(10.01) $86.27
 $4.97
 $7.50
 $2.34
            
Diluted income (loss) per share      
  
    
Continuing operations $6.11
 $(11.10) $4.66
 $(8.01) $7.72
 $2.14
Discontinued operations 12.69
 1.09
 81.47
 12.98
 (.22) .20
Total consolidated operations $18.80
 $(10.01) $86.13
 $4.97
 $7.50
 $2.34
        
Dividends declared per White Mountains’s common share $—
 $—
 $1.00
 $1.00
 $1.00
 $1.00
See Notes to Consolidated Financial Statements

WHITE MOUNTAINS INSURANCE GROUP, LTD.
CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY
Unaudited
  White Mountains’s Common Shareholders’ Equity    
(Millions) Common shares and paid-in surplus Retained earnings AOCI, after tax Total Non-controlling interest Total Equity
Balance at January 1, 2016 $978.2
 $3,084.9
 $(149.9) $3,913.2
 $454.8
 $4,368.0
             
Net income —
 445.8
 —
 445.8
 24.6
 470.4
Net change in foreign currency translation —
 —
 32.0
 32.0
 —
 32.0
Net change in pension liability and other
   accumulated comprehensive items
 —
 —
 .3
 .3
 .1
 .4
Recognition of foreign currency translation and
   other accumulated comprehensive items from
   the sale of Sirius Group
 —
 —
 113.3
 113.3
 —
 113.3
Total comprehensive income —
 445.8
 145.6
 591.4
 24.7
 616.1
Dividends declared on common shares —
 (5.4) —
 (5.4) —
 (5.4)
Dividends to non-controlling interests —
 —
 —
 —
 (17.4) (17.4)
Repurchases and retirements of common shares (188.1) (678.6) —
 (866.7) —
 (866.7)
Issuances of common shares 9.1
 —
 —
 9.1
 —
 9.1
Deconsolidation of non-controlling interests
   associated with the sale of Sirius Group
 —
 —
 —
 —
 (250.0) (250.0)
Deconsolidation of non-controlling interests
associated with the sale of Tranzact		 —
 —
 —
 —
 (78.4) (78.4)
Acquisition of subsidiary —
 —
 —
 —
 3.4
 3.4
Acquisition from non-controlling interests -
   OneBeacon
 (2.7) —
 —
 (2.7) (8.8) (11.5)
Issuance of shares to non-controlling interests —
 —
 —
 —
 .3
 .3
Net contributions from non-controlling interests —
 —
 —
 —
 20.1
 20.1
Amortization of restricted share awards 13.3
 —
 —
 13.3
 .5
 13.8
Balance at September 30, 2016 $809.8
 $2,846.7
 $(4.3) $3,652.2
 $149.2
 $3,801.4
             
  White Mountains’s Common Shareholders’ Equity    
(Millions) Common shares and paid-in surplus Retained earnings AOCI, after tax Total Non-controlling interest Total Equity
Balance at January 1, 2015 $1,034.7
 $3,010.5
 $(49.5) $3,995.7
 $542.7
 $4,538.4
             
Net income (loss) —
 29.7
 —
 29.7
 (24.2) 5.5
Net change in unrealized losses from
   investments in unconsolidated affiliates
 —
 —
 (29.4) (29.4) —
 (29.4)
Net change in foreign currency translation —
 —
 (62.6) (62.6) —
 (62.6)
Net change in pension liability and other
   accumulated comprehensive items
 —
 —
 .7
 .7
 .1
 .8
Total comprehensive income (loss) —
 29.7
 (91.3) (61.6) (24.1) (85.7)
Dividends declared on common shares —
 (6.0) —
 (6.0) —
 (6.0)
Dividends to non-controlling interests —
 —
 —
 —
 (35.4) (35.4)
Repurchases and retirements of common shares (46.0) (145.9) —
 (191.9) —
 (191.9)
Issuances of common shares .9
 —
 —
 .9
 —
 .9
Redemption of Prospector Offshore Fund —
 —
 —
 —
 (31.5) (31.5)
Acquisition from non-controlling interests - Other (2.2) —
 —
 (2.2) (2.7) (4.9)
Net contributions from non-controlling interests —
 —
 —
 —
 12.1
 12.1
Amortization of restricted share awards 10.6
 —
 —
 10.6
 (.3) 10.3
Balance at September 30, 2015 $998.0
 $2,888.3
 $(140.8) $3,745.5
 $460.8
 $4,206.3
  White Mountains’s Common Shareholders’ Equity    
(Millions) Common shares and paid-in surplus Retained earnings AOCI, after tax Total Non-controlling interest Total Equity
Balance at January 1, 2017 $810.7
 $2,797.2
 $(4.6) $3,603.3
 $133.9
 $3,737.2
             
Net income —
 34.3
 —
 34.3
 (1.3) 33.0
Net change in foreign currency translation and pension liability —
 —
 .9
 .9
 —
 .9
Total comprehensive income —
 34.3
 .9
 35.2
 (1.3) 33.9
Dividends declared on common shares —
 (4.6) —
 (4.6) —
 (4.6)
Dividends to non-controlling interests —
 —
 —
 —
 (6.6) (6.6)
Repurchases and retirements of common shares (1.4) (5.1) —
 (6.5) (1.1) (7.6)
Deconsolidation of non-controlling interests
   associated with the sale of Star & Shield
 —
 —
 —
 —
 (4.4) (4.4)
Issuance of shares to non-controlling interests (4.8) —
 —
 (4.8) 4.8
 —
Net contributions from non-controlling interests —
 —
 —
 —
 6.9
 6.9
Amortization of restricted share awards 2.6
 —
 —
 2.6
 .2
 2.8
Balance at March 31, 2017 $807.1
 $2,821.8
 $(3.7) $3,625.2
 $132.4
 $3,757.6
             
  White Mountains’s Common Shareholders’ Equity    
(Millions) Common shares and paid-in surplus Retained earnings AOCI, after tax Total Non-controlling interest Total Equity
Balance at January 1, 2016 $978.2
 $3,084.9
 $(149.9) $3,913.2
 $454.8
 $4,368.0
             
Net income —
 13.0
 —
 13.0
 6.3
 19.3
Net change in foreign currency translation and pension liability —
 —
 37.3
 37.3
 —
 37.3
Total comprehensive income —
 13.0
 37.3
 50.3
 6.3
 56.6
Dividends declared on common shares —
 (5.4) —
 (5.4) —
 (5.4)
Dividends to non-controlling interests —
 —
 —
 —
 (6.2) (6.2)
Repurchases and retirements of common shares (39.8) (132.9) —
 (172.7) —
 (172.7)
Acquisition from non-controlling interests -
   OneBeacon
 (2.7) —
 —
 (2.7) (8.8) (11.5)
Issuances of shares to non-controlling interests —
 —
 —
 —
 .3
 .3
Net contributions from non-controlling interests —
 —
 —
 —
 4.8
 4.8
Amortization of restricted share awards 3.2
 —
 —
 3.2
 .2
 3.4
Balance at March 31, 2016 $938.9
 $2,959.6
 $(112.6) $3,785.9
 $451.4
 $4,237.3
See Notes to Consolidated Financial Statements

WHITE MOUNTAINS INSURANCE GROUP, LTD.
CONSOLIDATED STATEMENTS OF CASH FLOWS
 Nine Months Ended September 30, Three Months Ended March 31,
(Millions) 2016 2015 2017 2016
Cash flows from operations: Unaudited Unaudited Unaudited Unaudited
Net income $470.4
 $5.5
 $33.0
 $19.3
Charges (credits) to reconcile net income to net cash used for operations:  
  
  
  
Net realized and unrealized investment (gains) losses (84.0) 33.9
 (51.3) (29.5)
Deferred income tax expense (benefit) 12.5
 (20.2)
Deferred income tax (benefit) expense (1.1) 5.0
Net income from discontinued operations (7.1) (59.1) —
 (1.1)
Net gain on sale of discontinued operations (414.5) (18.2)
Net gain on sale of unconsolidated affiliates and consolidated subsidiaries (.5) (16.1)
Net loss on sale of discontinued operations 1.0
 —
Amortization and depreciation 34.7
 31.8
 14.6
 11.4
Undistributed equity in earnings from unconsolidated affiliates, net of tax —
 (18.0)
Other operating items:    
    
Net change in loss and loss adjustment expense reserves (27.8) 83.3
 2.9
 (46.2)
Net change in reinsurance recoverable on paid and unpaid losses 7.6
 (63.3) 1.4
 26.5
Net change in unearned insurance premiums 63.0
 54.6
 20.7
 13.9
Net change in deferred acquisition costs (2.0) (3.6) (3.5) (2.2)
Net change in funds held by ceding entities —
 32.5
Net change in ceded unearned premiums (5.6) (23.5) (8.2) (6.8)
Net change in funds held under insurance treaties 18.4
 19.3
 (4.3) (2.8)
Net change in insurance premiums receivable (43.3) (32.0) 2.7
 (11.0)
Net change in ceded reinsurance payable (2.8) 12.4
Net change in restricted cash 5.8
 6.9
 —
 (2.6)
Net change in other assets and liabilities, net (150.9) 38.4
 (64.0) (19.8)
Net cash (used for) provided from operations - continuing operations (126.1) 64.6
Net cash (used for) provided from operations - discontinued operations (16.2) 22.7
Net cash (used for) provided from operations (142.3) 87.3
Net cash used for operations - continuing operations (56.1) (45.9)
Net cash used for operations - discontinued operations —
 (40.7)
Net cash used for operations (56.1) (86.6)
Cash flows from investing activities:  
  
  
  
Net change in short-term investments (88.7) 26.6
 55.6
 (50.4)
Sales of fixed maturity and convertible investments 2,433.4
 865.0
 868.5
 202.3
Maturities, calls and paydowns of fixed maturity and convertible investments 530.3
 249.5
 175.8
 155.9
Sales of common equity securities 961.1
 370.6
 17.7
 767.5
Distributions and redemptions of other long-term investments 19.8
 56.6
 16.5
 3.0
Sales of unconsolidated affiliates and consolidated subsidiaries, net of cash sold 2,657.2
 24.0
Proceeds paid to non-controlling common shareholders from the sale of consolidated subsidiaries (141.6) —
Net settlement of investment cash flows and contributions with discontinued operations (396.6) 17.5
 —
 (559.8)
Purchases of other long-term investments (37.3) (30.5) (22.4) (10.9)
Purchases of common equity securities (249.7) (329.4) (113.4) (86.1)
Purchases of fixed maturity and convertible investments (4,435.0) (1,300.2) (957.6) (315.2)
Purchases of unconsolidated affiliates and consolidated subsidiaries, net of cash acquired (13.7) (2.4) —
 (8.1)
Net change in unsettled investment purchases and sales (107.1) 73.8
 (1.0) 44.3
Net acquisitions of property and equipment (3.2) 37.0
 (.4) (1.3)
Net cash provided from investing activities - continuing operations 1,128.9
 58.1
 39.3
 141.2
Net cash provided from investing activities - discontinued operations 213.3
 2.8
 —
 33.6
Net cash provided from investing activities 1,342.2
 60.9
 39.3
 174.8
Cash flows from financing activities:  
  
  
  
Draw down of debt and revolving line of credit 352.5
 98.5
 —
 102.5
Repayment of debt and revolving line of credit (401.8) (84.5) (1.2) —
Proceeds from issuances of common shares 3.7
 —
Payments on capital lease obligation (1.4) (3.5)
Cash dividends paid to the Company’s common shareholders (5.4) (6.0) (4.6) (5.4)
Cash dividends paid to OneBeacon Ltd.’s non-controlling common shareholders (14.2) (14.8)
Common shares repurchased (861.0) (168.6) —
 (166.8)
OneBeacon Ltd. common shares repurchased and retired (11.5) (1.7) —
 (10.6)
Distribution to non-controlling interest shareholders (1.0) (9.1) (5.1) (4.7)
Contributions to discontinued operations (3.0) (4.1) —
 (3.0)
Acquisition of additional shares from non-controlling interest —
 (9.1)
Payments of contingent consideration related to purchases of consolidated subsidiaries (7.8) —
 —
 (7.8)
Capital contributions from BAM members 28.2
 20.3
 9.6
 6.7
Other financing activities, net (7.6) (7.2)
Net cash used for financing activities - continuing operations (922.7) (182.6) (8.9) (96.3)
Net cash (used for) provided from financing activities - discontinued operations (.2) 19.6
Net cash used for financing activities - discontinued operations —
 (8.3)
Net cash used for financing activities (922.9) (163.0) (8.9) (104.6)
Effect of exchange rate changes on cash (excludes $0.0 and ($4.1) related to discontinued operations) —
 —
Effect of exchange rate changes on cash (excludes $0.0 and $4.2 related to discontinued operations) —
 —
Net change in cash during the period - continuing operations 80.1
 (59.9) (25.7) (1.0)
Cash balances at beginning of period (excludes restricted cash balances of $5.8 and $23.7 and discontinued operations cash balances of $150.1 and $116.6) 167.2
 232.9
Cash balances at beginning of period (excludes restricted cash balances of $0.0 and $5.8 and discontinued operations cash balances of $0.0 and $150.2) 149.8
 167.2
Add: cash held for sale at the beginning of period 1.2
 2.1
 .9
 1.2
Less: cash held for sale at the end of period 3.8
 2.1
 —
 2.1
Cash balances at end of period (excludes restricted cash balances of $0.0 and $16.8 and discontinued operations cash balances of $0.0 and $157.6) $244.7
 $173.0
Cash balances at end of period (excludes restricted cash balances of $0.0 and $8.4 and discontinued operations cash balances of $0.0 and $139.9) $125.0
 $165.3
Supplemental cash flows information:  
 

  
 

Interest paid $(7.0) $(6.3) $(.2) $(.2)
Net income tax refund from national governments $13.5
 $8.0
 $—
 $13.5
See Notes to Consolidated Financial Statements

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Unaudited)

Note 1. Summary of Significant Accounting Policies
 
Basis of Presentation
These interim consolidated financial statements have been prepared in accordance with generally accepted accounting principles in the United States (“GAAP”) and include the accounts of White Mountains Insurance Group, Ltd. (the “Company” or the “Registrant”), its subsidiaries (collectively, with the Company, “White Mountains”) and other entities required to be consolidated under GAAP. The Company is an exempted Bermuda limited liability company whose principal businesses are conducted through its insurance and reinsurance subsidiaries and other affiliates. The Company’s headquarters is located at 26 Reid Street, Hamilton, Bermuda HM 11, its principal executive office is located at 80 South Main Street, Hanover, New Hampshire 03755-2053 and its registered office is located at Clarendon House, 2 Church Street, Hamilton, Bermuda HM 11. White Mountains’s reportable segments are OneBeacon, HG Global/BAM and Other Operations. 
As discussed further in the Company’s consolidated financial statements in Note 2 -— “Significant Transactions”, on April 18, 2016, White Mountains completed its sale of Sirius International Insurance Group, Ltd., and its subsidiaries (collectively, “Sirius Group”) to CM International Holding PTE Ltd. (“CMI”), the Singapore-based investment arm of China Minsheng Investment Corp., Ltd. (See Note 2 - “Significant Transactions”). On June 9,Also, on July 21, 2016, White Mountains entered into an agreement to sellcompleted its sale of Tranzact Holdings, LLC (“Tranzact”) to an affiliate of Clayton, Dubilier & Rice, LLC, which was completed on July 21, 2016.LLC. For the three and nine months ended September 30,March 31, 2016, Sirius Group and Tranzact have been presented as discontinued operations in the statement of operations and comprehensive income. Prior year amounts have been reclassified to conform to the current period’s presentation. The assets and liabilities of Sirius Group and Tranzact are classified as held for sale in the balance sheet as of December 31, 2015. (SeeSee Note 17 -— “Held for Sale and Discontinued Operations”).
The OneBeacon segment consists of OneBeacon Insurance Group, Ltd. (“OneBeacon Ltd.”), an exempted Bermuda limited liability company that owns a family of property and casualty insurance companies (collectively, “OneBeacon”). OneBeacon is a specialty property and casualty insurance writer that offers a wide range of insurance products in the United States through independent agencies, regional and national brokers, wholesalers and managing general agencies. As of September 30, 2016March 31, 2017 and December 31, 2015,2016, White Mountains owned 76.1%75.7% and 75.5%76.1% of OneBeacon Ltd.’s outstanding common shares.
The HG Global/BAM segment consists of HG Global Ltd. (“HG Global”) and the consolidated results of Build America Mutual Assurance Company (“BAM”). BAM is athe first and only mutual bond insurance company in the United States. By insuring the timely payment of principal and interest, BAM provides market access to, and lowers interest expense for, issuers of municipal bond insurer domiciled in New York that was established in 2012bonds used to provide insurance on bonds issued to supportfinance essential U.S. public purposes such as schools, utilities core governmental functions and existing transportation facilities. BAM is owned by and operated for the benefit of its members, the municipalities that purchase BAM's insurance for their debt issuances. HG Global was established to fund the startup of BAM and, through its wholly-owned subsidiary, HG Re Ltd. (“HG Re”), to provide 15%-of-par, first loss reinsurance protection for policies underwritten by BAM. HG Global, together with its subsidiaries, provided the initial capitalization of BAM through the purchase of $503.0 million of surplus notes issued by BAM (the “BAM Surplus Notes”). HG Global, through its wholly-owned subsidiary, HG Re Ltd. (“HG Re”), also provides 15%-of-par, first loss reinsurance protection for policies underwritten by BAM. As of September 30, 2016March 31, 2017 and December 31, 2015,2016, White Mountains owned 96.9% of HG Global’s preferred equity and 88.4% of its common equity. White Mountains does not have an ownership interest in BAM, which is a mutual insurance company owned by its members.BAM. However, GAAP requires White Mountains to consolidate BAM’s results in its financial statements. BAM’s results are attributed to non-controlling interests.
White Mountains’s Other Operations segment consists of the Company and its intermediate holding companies, its wholly-owned investment management subsidiary, White Mountains Advisors LLC (“WM Advisors”) and certain consolidated and unconsolidated private capital investments. The consolidated private capital investments consist of QL Holdings LLC (“MediaAlpha”), Wobi Insurance Agency Ltd. (“Wobi”) and Removal Stars Ltd. (“Buzzmove”). White Mountains’s Other Operations segment also includes its variable annuity reinsurance business, White Mountains Life Reinsurance (Bermuda) Ltd. (“Life Re Bermuda”), which completed its runoff with all of its contracts maturing by June 30, 2016, and its U.S.-based service provider, White Mountains Financial Services LLC (collectively, “WM Life Re”), and White Mountains’s ownership positions in QL Holdings, LLC (“MediaAlpha”) and Wobi Insurance Agency Ltd. (“Wobi”). On August 4, 2016, White Mountains acquired a 70.9% ownership share in Removal Stars Ltd (“Buzzmove”) for a purchase price of GBP 6.0 million (approximately $8.0 million based upon the foreign exchange spot rate at the date of acquisition), which is included in the Other Operations segment at September 30, 2016. The Other Operations segment also includes Abiaka Holdings, LLC, Star & Shield Services LLC, Star & Shield Risk Management LLC, (“SSRM”), and Star & Shield Claims Services LLC (collectively “Star & Shield”). Star & Shield provides management services for a fee to Star & Shield Insurance Exchange (“SSIE”), a reciprocal that is owned by its members, who are policyholders. White Mountains holds surplus notes issued by SSIE (the “SSIE Surplus Notes”) but does not have an ownership interest in SSIE. However, because SSRM’s role as the attorney-in-fact to SSIE gives it the power to direct the significant economic activities of SSIE, White Mountains iswas required to consolidate SSIE in its GAAP financial statements. SSIE’s results do not affect White Mountains’s common shareholders’ equity as they are attributable to non-controlling interests. On August 19, 2016,statements until White Mountains reached an agreement to sellcompleted the sale of Star & Shield and its investment in SSIE surplus notesSurplus Notes to National General Holdings Corp. As a result,K2 Insurance Services, LLC on March 7, 2017. White Mountains has presented Star & Shield'sShield’s and SSIE'sSSIE’s assets and liabilities as held for sale as of September 30, 2016 and December 31, 2015.

2016. See Note 17 — “Held for Sale and Discontinued Operations”.
All significant intercompany transactions have been eliminated in consolidation. Certain amounts in the prior period financial statements have been reclassified to conform to the current presentation. These interim financial statements include all adjustments considered necessary by management to fairly state the financial position, results of operations and cash flows of White Mountains. These interim financial statements may not be indicative of financial results for the full year and should be read in conjunction with the Company’s 20152016 Annual Report on Form 10-K.

The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities as of the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.  Refer to the Company’s 20152016 Annual Report on Form 10-K for a complete discussion regarding White Mountains’s significant accounting policies.

Recently Adopted Changes in Accounting Principles
 
Stock Compensation
Effective January 1, 2017, White Mountains adopted ASU 2016-09, Improvements to Employee Share-Based Payment Accounting (ASC 718) which simplifies certain aspects of the accounting for share-based compensation. The new guidance provides an accounting policy election to account for forfeitures by either applying an assumption, as required under existing guidance, or by recognizing forfeitures when they actually occur. At adoption, White Mountains did not change its accounting policy for forfeitures, which is to apply an assumed forfeiture rate. The new guidance has also changed the threshold for partial cash settlement to settle statutory withholding requirements for equity classified awards, increasing the threshold up to the maximum statutory tax rate. As a result of adoption White Mountains reported $6.5 million and $5.8 million of statutory withholding tax payments made in connection with the settlement of restricted shares as financing cash flows for the three-month periods ended March 31, 2017 and 2016. Such payments were classified as operating cash flows prior to adoption.
In addition, the new guidance changed the treatment for excess tax benefits which arise from the difference between the deduction for tax purposes and the compensation costs recognized for financial reporting. Under the new guidance, a reporting entity will recognize excess tax benefits or expense in current period earnings, regardless of whether it is in a taxes payable position.

Short-Duration Contracts
Effective December 31, 2016, White Mountains adopted ASU 2015-09, Disclosures about Short Duration Contracts (ASC 944), which requires expanded footnote disclosures about loss and loss adjustment expense (“LAE”) reserves. Upon adoption, White Mountains modified its footnote disclosures to include loss development tables on a disaggregated basis by accident year and a reconciliation of loss development data to the loss and LAE reserves reflected on the balance sheet. The footnotes disclosures have also been expanded to include information about claim frequency data, including a description of how the claims frequency data is measured. Prior year disclosures have been modified to conform to the new disclosures. See Note 3 — “Reserves for Unpaid Losses and Loss Adjustment Expenses”.

Business Combinations - Measurement Period Adjustments
Effective January 1, 2016, White Mountains adopted ASU 2015-16, Simplifying the Accounting for Measurement-Period Adjustments, which requires adjustments to provisional amounts recorded in connection with a business combination that are identified during the measurement period to be recorded in the reporting period in which the adjustment amounts are determined, rather than as retroactive adjustments to prior periods. White Mountains has not recognized any adjustments to estimated purchase accounting amounts for the year to date period ended September 30,March 31, 2016 and accordingly, there was no effect to White Mountains’s financial statements upon adoption.

Fair Value Measurements
On January 1, 2016, White Mountains adopted ASU 2015-07, Fair Value Measurement - Disclosures for Investments in Certain Entities that Calculate Net Asset Value per Share (or Its Equivalent) (ASC 820), which eliminates the requirement to disclose the fair value hierarchy level for investments for which fair value is measured at net asset value using the practical expedient in ASC 820. White Mountains measures the fair value of its investments in hedge funds and private equity funds using this practical expedient. Upon adoption, these fair value measurements are no longer classified within the fair value hierarchy. Prior year amounts have been modified to conform to the current year’s disclosures.

Amendments to Consolidation Analysis
On January 1, 2016, White Mountains adopted ASU 2015-02, Amendments to the Consolidation Analysis (ASC 810) which amends the guidance for determining whether an entity is a variable interest entity (“VIE”). ASU 2015-02 eliminates the separate consolidation guidance for limited partnerships and, with it, the presumption that a general partner should consolidate a limited partnership. In addition, ASU 2015-02 changes the guidance for determining if fee arrangements qualify as variable interests and the effect fee arrangements have on the determination of the primary beneficiary. Adoption of ASU 2015-02 did not affect the consolidation analysis for any of White Mountains’s investments.

Share-Based Compensation Awards
On January 1, 2016, White Mountains adopted ASU 2014-12, Share-Based Payments When the Terms of an Award Provide That a Performance Target Could Be Achieved after the Requisite Service Period (ASC 718). The new guidance requires that a performance target that affects vesting and that can be achieved after the requisite service period be treated as a performance condition. Compensation cost is to be recognized in the period when it becomes probable the performance target will be achieved in an amount equal to the compensation cost attributable to the periods for which service has been rendered. Adoption did not have a significant effect on White Mountains’s financial position, results of operations, cash flows, presentation or disclosures.


Debt Issuance Costs
On January 1, 2016, White Mountains adopted ASU 2015-03, Imputation of Interest (ASC 835), which requires debt issuance costs to be presented as a deduction from the carrying amount of the related debt, consistent with the treatment required for debt discounts. The new guidance requires amortization of debt issuance costs to be classified within interest expense and also requires disclosure to the debt’s effective interest rate. White Mountains has applied the guidance retrospectively and as a result has reclassified $1.9 million of unamortized debt issuance costs from other assets to debt as of December 31, 2015, reflecting these amounts as a reduction from the related debt, and has modified its disclosures to include the required effective interest rate on its debt. As of September 30, 2016,March 31, 2017, the unamortized debt issuance costs included in debt is $1.9$1.8 million.


Recently Issued Accounting Pronouncements

Short-Duration Contracts
In May 2015, the FASB issued ASU 2015-09, Disclosures about Short Duration Contracts (ASC 944), which requires expanded footnote disclosures about loss and loss adjustment expense (“LAE”) reserves. Under the new guidance, some disclosures currently presented outside of White Mountains’s financial statements, such as loss development tables and a reconciliation of loss development data to the loss and LAE reserves reflected on the balance sheet, will become part of the financial statement footnotes. In addition, the loss development tables required to be presented under the new ASU must be presented on a disaggregated basis by accident year rather than by reporting year as currently presented. Some of the expanded disclosures are new requirements, such as the disclosure of reserves for losses incurred but not reported (“IBNR”) plus expected development on reported claims, which must be presented by accident year on a disaggregated basis. The new guidance also requires new disclosures about claim frequency data together with descriptions of the approach used to measure that data. Qualitative descriptions of methodologies and assumptions used to develop IBNR estimates must be presented together with the amounts of IBNR to which they relate, along with a discussion of any significant changes in methodology and assumptions and the related effect upon the loss reserves. The new guidance will be effective for annual periods beginning after December 15, 2015 and interim periods within annual periods beginning after December 15, 2016 with retrospective restatement of prior periods required. White Mountains will modify its financial statement footnote disclosures to conform to the requirements of ASU 2015-09 upon adoption, including revisions to prior year’s disclosures.

Cash Flow Statement
In August 2016, the FASB issued ASU 2016-15, Statement of Cash Flows: Classification of Certain Cash Receipts and Cash Payments (ASC 230). The new guidance, which addresses the classification and presentation of certain items, including debt prepayment and extinguishment costs, contingent consideration payments made after a business combination and distributions received from equity method investees, for which there was diversity in practice.
In November 2016, the FASB issued ASU 2016-18, Statement of Cash Flows: Restricted Cash (ASC 230). Under current guidance, restricted amounts of cash or cash equivalents are excluded from the cash flow statement. The new guidance requires restricted cash and restricted cash equivalents to be included in the reconciliation of beginning and end-of-period amounts presented on the statement of cash flows. In addition, the new guidance requires a description of the nature of the changes in restricted cash and cash equivalents during the periods presented.
The updated guidance isin ASU 2016-15 and ASU 2016-18 are both effective for interim and annual reporting periods beginning after December 15, 2017, with early adoption permitted. White Mountains is evaluating the expected impact of this new guidance.

Credit Losses
In June 2016, the FASB issued ASU 2016-13, Measurement of Credit Losses on Financial Instruments (ASC 326), which establishes new guidance for the recognition of credit losses for financial assets measured at amortized cost. The new ASU, which applies to financial assets that have the contractual right to receive cash including reinsurance receivables, requires reporting entities to estimate the credit losses expected over the life of a credit exposure using historical information, current information and reasonable and supportable forecasts that affect the collectability of the financial asset. The types of assets included in the scope of the new guidance includes premium receivables, reinsurance recoverables and loans. ASU 2016-13 is effective for annual periods beginning after January 1, 2020, including interim periods. White Mountains is evaluating the expected impact of this new guidance.

Stock Compensation
In March 2016, the Board issued ASU 2016-09, Improvements to Employee Share-Based Payment Accounting (ASC 718) which is intended to simplify certain aspects of the accounting for share-based compensation. The new guidance provides an accounting policy election to account for forfeitures by either applying an assumption, as required under existing guidance, or by recognizing forfeitures when they actually occur. The new guidance is effective for annual periods beginning after December 15, 2016, and interim periods within those annual periods with early adoption permitted. White Mountains does not expect a significant effect upon adoption.

Leases
In February 2016, the FASB issued ASU 2016-02, Leases (ASC 842). The new guidance requires lessees to recognize lease assets and liabilities on the balance sheet for both operating and financing leases, with the exception of leases with an original term of 12 months or less. Under existing guidance recognition of lease assets and liabilities is not required for operating leases. The lease assets and liabilities to be recognized are both measured initially based on the present value of the lease payments. Under the new guidance, a sale-leaseback transaction must meet the recognition criteria under ASC 606, Revenues in order to be accounted for as sale. The new guidance is effective for White Mountains for years beginning after December 15, 2018, including interim periods therein. White Mountains is evaluating the expected impact of this new guidance and available adoption methods.

Financial Instruments - Recognition and Measurement
In January 2016, the FASB issued ASU 2016-01, Recognition and Measurement of Financial Assets and Financial Liabilities (ASC 825-10). The new ASU modifies the guidance requiresfor financial instruments, including investments in equity securities. Under the new guidance, all equity securities with readily determinable fair values are required to be measured at fair value with changes therein recognized through current period earnings. In addition, the new ASU requires a qualitative assessment for equity investmentssecurities without readily determinable fair values to identify impairment, and for impaired equity security investmentssecurities to be measured at fair value. ASU 2016-01 is effective for fiscal years beginning after December 15, 2017, with early adoption permitted. White Mountains has taken the fair value election formeasures its portfolio of equity security investments and,investment securities at fair value with changes therein recognized through current period earnings accordingly, does not expect the adoption of ASU 2016-01 to have a significant impact on its financial statements.


Revenue Recognition
In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers (ASC(ASC 606), which modifies the guidance for revenue recognition. Under ASU 2014-09, revenue is to be recognized at an amount that reflects the consideration to which an entity expects to be entitled in exchange for goods or services transferred to customers. The scope ofnew guidance sets forth the newsteps to be followed to recognize revenue: (i) identify the contract(s) with a customer, (ii) identify the performance obligations in the contract, (iii) determine the transaction price, (iv) allocate the transaction price to the performance obligations in the contract and (v) recognize revenue when (or as) the entity satisfies a performance obligation. Subsequently, the FASB issued additional ASUs clarifying the guidance in and providing implementation guidance for ASU excludes insurance contracts but is applicable to certain fee arrangements, such as third party investment management fees charged by White Mountains Advisors as well as commissions and other non-insurance revenues.2014-09. In August 2015, the FASB issued ASU 2015-14, Revenue from Contracts with Customers (ASC 606), which delayeddelays the effective date of ASU 2014-09 and all related ASUs to annual and interim reporting periods beginning after December 15, 2017. Most of White Mountains’s revenue from customers relates to insurance contracts, which are excluded from the scope of ASU 2014-09, as are investment income and investments gains and losses. However, the new guidance is applicable to some of White Mountains’s revenue streams, including certain fee arrangements as well as commissions and other non-insurance revenues. White Mountains is in the process of evaluating the new guidance, and hasbut does not yet determined the potentialexpect ASU 2014-09 to have a significant effect on recognition of adoption on its financial position, results of operations, or cash flows.White Mountains’s non-insurance revenues from customers.

Note 2. Significant Transactions

Sale of Star and Shield
On March 7, 2017, White Mountains completed its sale of Star & Shield and its investment in SSIE Surplus Notes to K2 Insurances LLC. White Mountains did not recognize any gain or loss on the sale. Through December 31, 2016, Star & Shield’s assets and liabilities are reported as held for sale within White Mountains's GAAP financial statements. See Note 17 — “Held for Sale and Discontinued Operations”.

Buzzmove
On August 4, 2016, White Mountains acquired a 70.9% ownership share in Buzzmove for a purchase price of GBP 6.1 million (approximately $8.1 million based upon the foreign exchange spot rate at the date of acquisition). White Mountains recognized total assets acquired related to Buzzmove of $11.5 million, including $7.6 million of goodwill and $1.1 million of intangible assets, and total liabilities assumed of $0.1 million, reflecting acquisition date fair values.

Sale of Tranzact
On July 21, 2016, White Mountains completed the sale of Tranzact to Clayton, Dubilier & Rice, LLC and received net proceeds of $221.3 million. In connection with the sale of Tranzact, the purchaser directly repaid $56.3 million for the portion of Tranzact's debt attributable to White Mountains's common shareholders. On October 5, 2016, White Mountains received additional proceeds of $1.2 million following the release of the post-closing purchase price adjustment escrow.
White Mountains recorded a $51.9 million gain from the sale of Tranzact in discontinued operations, which included a $30.2 million tax expense for the reversal of a tax valuation allowance that is offset by a tax benefit recorded in continuing operations. See Note 8 — “Income Taxes”. The increase to White Mountains’s book value from the sale of Tranzact was $82.1 million. A reconciliation of the gain reported in discontinued operations to the impact to White Mountains's book value is as follows:
Gain from sale of Tranzact reported in discontinued operations $51.9
Add back reclassification from continuing operations for the release of a tax valuation allowance 30.2
Increase to White Mountains book value from sale of Tranzact $82.1

In the first quarter of 2017, White Mountains recorded a $1.0 million reduction to the gain from sale of Tranzact in discontinued operations as a result of 2016 tax payments.
Through July 21, 2016, Tranzact’s results of operations are reported as discontinued operations and assets and liabilities held for sale within White Mountains’s GAAP financial statements. See Note 17 — “Held for Sale and Discontinued Operations”.


Sale of Sirius Group
On April 18, 2016, White Mountains completed the sale of Sirius Group to CMI for approximately $2.6 billion. $161.8 million of this amount was used to purchase certain assets to be retained by White Mountains out of Sirius Group, including shares of OneBeacon. The amount paid at closing was based on an estimate of Sirius Group’s closing date tangible common shareholder’s equity. InDuring the secondthird quarter of 2016, there was a final true-up to Sirius Group’s tangible common shareholder’s equity that resulted in a $4.0 million reduction to the gain. During 2016, White Mountains recorded $366.6$363.2 million of gain from sale of Sirius Group in discontinued operations and $113.3 million in other comprehensive income from discontinued operations. In the third quarter of 2016, White Mountains recorded a $4.0 million reduction to the gain from sale of Sirius Group in discontinued operations as a result of the final true-up of Sirius Group's closing date tangible common shareholder's equity.
Through April 18, 2016, Sirius Group’s results are reported as discontinued operations and assets and liabilities held for sale within White Mountains’s GAAP financial statements. Assets held for sale do not include White Mountains’s investment in OneBeacon and certain other investments that were held in the Sirius Group legal entities as of December 31, 2015. The value of these investments, net of related tax effects, was approximately $686.2 million, of which $528.6 million was Symetra common shares, as of December 31, 2015.
As part of the sale of Sirius Group, White Mountains purchased Ashmere Insurance Company (“Ashmere”), a subsidiary formerly owned by Sirius Group. Ashmere was under an agreement to be sold as of September 30, 2016 and the sale was completed on October 12, 2016. As of September 30, 2016, Ashmere's assets and liabilities are presented as held for sale.
The transactions to purchase the investments in OneBeacon and the other investments held by Sirius Group prior to the closing are presented in the statement of cash flows as net settlement of investment cash flows withwithin discontinued operations.


See Note 17 — “Held for Sale and Discontinued Operations”.

Symetra
On February 1, 2016, Symetra closed its merger agreement with Sumitomo Life Insurance Company (“Sumitomo Life”) and White Mountains sold its investment in Symetra Financial Corporation (“Symetra”) forreceived proceeds of $658.0 million, or $32.00 per common share. (SeeWhite Mountains also received a special dividend of $0.50 per share as part of the transaction that was paid in the third quarter of 2015. See Note 14 -— “Investments in Unconsolidated Affiliates”).

OneBeacon Crop Business
On July 31, 2015, OneBeacon exited its multiple peril crop insurance (“MPCI”) and its related crop-hail business (collectively, “Crop Business”) as its exclusive managing general agency, Climate Crop Insurance Agency (“CCIA”), exited the business through a sale of the agency to an affiliate of AmTrust. As a result of the transaction, OneBeacon and CCIA agreed to an early termination of the existing five-year agreement. In connection with the termination of the agreement, OneBeacon received a payment of $3.0 million. Also related to the transaction, OneBeacon withdrew its 2016 Plan of Operations, which previously authorized it to write MPCI for the 2016 Reinsurance Year, and affiliates of AmTrust agreed to reinsure the Company’s remaining net Crop Business exposure for the 2015 Reinsurance Year under a related 100% quota share reinsurance agreement which, coupled with other transfer and assignment agreements as well as communications with policyholders and agents, had the effect of assumption reinsurance. As a result of this transaction, the Company has no material net exposure related to the Crop Business.

Sale of TranzactMediaAlpha
On July 21,March 14, 2014, White Mountains acquired 60.0% of the outstanding Class A common units of MediaAlpha. White Mountains paid an initial purchase price of $28.1 million. The purchase price was subject to adjustment equal to 62.5% of the 2015 gross profit in excess of the 2013 gross profit. On February 26, 2016, White Mountains completedpaid $7.8 million in
settlement of the sale of Tranzact to Clayton, Dubilier & Rice, LLC and received net proceeds of $221.3 million. In connection with the sale of Tranzact, the purchaser directly repaid $56.3 millionfinal purchase adjustment. After adjustment for the portion of Tranzact's debt attributable to White Mountains's common shareholders.
estimated contingent purchase price adjustment, White Mountains recordedrecognized total assets acquired related to MediaAlpha of $70.1 million, including $18.3 million of goodwill and $38.5 million of other intangible assets, and total liabilities assumed of $10.0 million, reflecting acquisition date fair values.
On January 15, 2016, MediaAlpha acquired certain assets from Oversee.net for a $51.9 million gainpurchase price of $3.9 million. The majority of assets acquired, which are included in other intangible assets, consists of customer relationships, a customer contract, a non-compete agreement from the sale of Tranzact in discontinued operations, which included a $30.2 million tax expense for the reversal of a tax valuation allowance that is offset by a tax benefit recorded in continuing operations. (See Note 8 - “Income Taxes”). The increase to White Mountains’s book value from the sale of Tranzact was $82.1 million. A reconciliation of the gain reported in discontinued operations to the impact to White Mountains's book value is as follows:
Gain from sale of Tranzact reported in discontinued operations $51.9
Add back reclassification from continuing operations for the release of
     a tax valuation allowance
 30.2
Increase to White Mountains book value from sale of Tranzact $82.1

Through July 21, 2016, Tranzact's results of operations are reported as discontinued operationsseller, domain names and assets and liabilities held for sale within White Mountains's GAAP financial statements.technology.

Wobi
On February 19, 2014, White Mountains acquired 54% of the outstanding common shares of Wobi for NIS 14.4 million (approximately $4.1 million based upon the foreign exchange spot rate at the date of acquisition).  During 2014, in addition to the common shares, White Mountains also purchased NIS 31.5 million (approximately $9.0 million based upon the foreign exchange spot rate at the dates of acquisition) of newly-issued convertible preferred shares of Wobi.  Wobi is the only price comparison/aggregation business in Israel, with an insurance carrier panel that represents 80%As of the premiums written in the Israeli insurance market.acquisition date, White Mountains recognized total assets acquired related to Wobi sells four insurance lines of business, primarily personal auto,$13.4 million, including $5.5 million of goodwill and operates as an agency, charging upfront commissions on all insurance policy sales. Wobi also offers a pension products comparison service for Israeli customers$2.9 million of other intangible assets; and is paid transaction fees when customers use the service to connect to companies that sell those pension products.total liabilities assumed of $0.7 million at their estimated acquisition date fair values.
During the three months ended September 30, 2016,2015, White Mountains purchased NIS 11.579.6 million (approximately $3.1$20.7 million based upon the foreign exchange spot rate at the dates of acquisition) of convertible preferred shares of Wobi. During the nine months ended September 30, 2016,In addition, during 2015 White Mountains also purchased NIS 27.911.8 million (approximately $7.5 million based upon the foreign exchange spot rates at the dates of acquisitions) of convertible preferred shares of Wobi, increasing its ownership share to 96.7% on a fully converted basis.
During 2015, Wobi acquired Tnuva Finansit Ltd. (“Cashboard”) in two transactions for a total of NIS 35.9 million (approximately $8.9$3.1 million based upon the foreign exchange spot rate at the datesdate of acquisition) of common shares of Wobi.

On February 23, 2015, Wobi acquired 56.2% of the outstanding share capital of Tnuva Finansit Ltd. (“Cashboard”) for NIS 9.5 million (approximately $2.4 million). The acquisition of Cashboard accelerated Wobi’s development of its pension products comparison service. As of the acquisition date, Wobi recognized total assets acquired of $5.5 million, including $0.3 million of goodwill and $2.8 million of other intangible assetsassets; and total liabilities assumed of $1.2 million at their estimated acquisition date fair values. During 2015, Wobi purchased the remaining share capital of Cashboard for NIS 26.4 million (approximately $6.5 million).


Star & Shield
On January 31, 2014, White Mountains acquired certain assets and liabilities of Star & Shield Holdings LLC, including SSRM, the attorney-in-fact for SSIE, for a purchase price of $1.8 million. SSIE is a Florida-domiciled reciprocal insurance exchange providing private passenger auto insurance to the public safety community and their families. White Mountains invested $21.0 million of surplus notes issued by SSIE. Principal and interest on the surplus notes are payable to White Mountains only with approval from the Florida Office of Insurance Regulation. SSIE is a variable interest entity (“VIE”). As a result of SSRM’s role as the attorney-in-fact to SSIE and the investment in SSIE’s Surplus Notes, White Mountains is required to consolidate SSIE.
In response to the significant increases in both frequency and severity of accidents in the private passenger automobile insurance market in the State of Florida, SSIE voluntarily ceased writing new policies effective July 1, 2016 and will voluntarily cease renewing policies at a future date, subject to regulatory approval. On August 19,During 2016, White Mountains reached an agreement to sell Star & Shield and its investment in SSIE surplus notes to National General Holdings Corp.
purchased NIS 35.9 million (approximately $9.6 million based upon the foreign exchange spot rates at the dates of acquisitions) of convertible preferred shares of Wobi. As a result, during the first nine months of 2016, White Mountains wrote off its investment in SSIE surplus notes. White Mountains consolidates the issuer of the surplus notes, Star & Shield Insurance Exchange and, accordingly the impact of the write down is eliminated in pre-tax income. However, the write down resulted in a $21.0 million total decrease to net income attributable to White Mountains's common shareholders and a corresponding increase to net income attributable to non-controlling interests.
At September 30, 2016both March 31, 2017 and December 31, 2015, consolidated amounts included total assets of $11.4 million and $14.2 million and total liabilities of $7.2 million and $30.3 million, respectively, of SSIE. For the three months ended September 30, 2016, and 2015, SSIE had pre-tax income of $0.4 million and pre-tax loss of $0.8 million that were recorded in net gain (loss) attributable to non-controlling interests. For the nine months ended September 30, 2016 and 2015, SSIE had pre-tax income of $20.3 million and pre-tax loss of $0.9 million that were recorded in net gain (loss) attributable to non-controlling interests. The decrease in total liabilities and increase in pre-tax income in the current year is due to the $21.0 million write down of the surplus notes at SSIE.White Mountains’s ownership share was 95.0% .

Note 3.  Loss and Loss Adjustment Expense Reserves
 
The following table summarizes the loss and loss adjustment expense (“LAE”) reserve activities of White Mountains’s insurance and reinsurance subsidiaries for the three and nine months ended September 30, 2016March 31, 2017 and 20152016:
 Three Months Ended Nine Months Ended Three Months Ended
 September 30, September 30, March 31,
Millions 2016 2015 2016 2015 2017 2016
Gross beginning balance $1,376.6
 $1,350.8
 $1,389.8
 $1,342.2
 $1,365.6
 $1,389.8
Less beginning reinsurance recoverable on unpaid losses (162.8) (147.1) (186.0) (161.6) (172.9) (186.0)
Net loss and LAE reserves 1,213.8
 1,203.7
 1,203.8
 1,180.6
 1,192.7
 1,203.8
            
SSIE reserves held for sale at beginning of the period (1)
 5.3
 6.1
 5.5
 7.7
Add: SSIE reserves held for sale at beginning of the period (1)
 4.7
 5.5
            
Loss and LAE incurred relating to:      
  
    
Current year losses 164.9
 170.4
 492.8
 536.7
 151.7
 161.2
Prior year losses 0.1
 (.4) 15.3
 (2.6) —
 (.1)
Total incurred losses and LAE 165.0
 170.0
 508.1
 534.1
 151.7
 161.1
            
Loss and LAE paid relating to:      
  
    
Current year losses (55.0) (53.0) (116.2) (120.2) (21.5) (23.1)
Prior year losses (131.1) (108.1) (403.2) (383.5) (129.1) (148.6)
Total loss and LAE payments (186.1) (161.1) (519.4) (503.7) (150.6) (171.7)
            
SSIE reserves held for sale at end of the period (1)
 (5.4) (5.5) (5.4) (5.5)
Less: Deconsolidation of SSIE (1)
 4.4
 —
    
Less: SSIE reserves held for sale at end of the period (1)
 —
 5.3
            
Net ending balance 1,192.6
 1,213.2
 1,192.6
 1,213.2
 1,194.1
 1,193.4
Plus ending reinsurance recoverable on unpaid losses 169.4
 214.2
 169.4
 214.2
 174.7
 150.4
Gross ending balance $1,362.0
 $1,427.4
 $1,362.0
 $1,427.4
 $1,368.8
 $1,343.8
(1) Resulting from the sale of Star & Shield in the first quarter of 2017, SSIE is no longer consolidated. See Note 17 -— “Held for Sale and Discontinued Operations”.


Loss and LAE incurred relating to prior year losses for the three and nine months endedSeptember 30, 2016March 31, 2017
For the three and nine months ended March 31, 2017, White Mountains did not experience any net loss reserve development on prior accident year reserves, as unfavorable reserve development at OneBeacon, primarily in Healthcare due to an adverse settlement on a single claim was offset by favorable reserve development driven by Technology, Accident & Health and
Entertainment September 30,resulting from favorable loss experience.

Loss and LAE incurred relating to prior year losses for the three months ended March 31, 2016,
For the three months ended March 31, 2016, White Mountains experienced net unfavorablefavorable loss reserve development of $0.1 million and $15.3 million.
During For the three months ended September 30,March 31, 2016, OneBeacon did not experience any net loss reserve development. During the nine months ended September 30, 2016, OneBeacon experienced $15.4 million of netdevelopment on prior accident year reserves, as favorable development from several businesses, including Technology and Accident, was offset by unfavorable loss reserve development primarily related to OneBeacon's Healthcare business described below as well as Other Professional Lines and Programs businesses, partially offset by favorable loss reserve development in its Technology, Accident and Financial Services businesses.
During the second quarter of 2016, OneBeacon recognized $20.0 million of unfavorable loss reserve development and also increased the current accident year provision related to its Healthcare business. Paid and incurred activity in the second quarter for extended care facilities coverage within OneBeacon's Healthcare business increased above expectations and above what was experienced in the first quarter of 2016. Extended care facilities coverage provides liability insurance for assisted living, memory care and continuing care facilities, among others. In addition, there were two large claims from the managed care errors and omissions coverage within OneBeacon's Healthcare business that contributed to the adverse loss reserve development.
Healthcare. For the three months ended September 30, 2016, SSIE had net unfavorable loss reserve development of $0.1 million. For the nine months ended September 30,March 31, 2016, SSIE had net favorable loss reserve development of $0.1 million.

Loss and LAE incurred relating to prior year losses for the three and nine months ended September 30, 2015
For the three and nine months ended September 30, 2015, White Mountains experienced net favorable loss reserve development of $0.4 million and $2.6 million.
During the three months ended September 30, 2015, OneBeacon experienced no net loss reserve development on prior accident year reserves. For the nine months ended September 30, 2015, OneBeacon had net favorable loss reserve development of $1.8 million. For the three and nine months ended September 30, 2015, SSIE had net favorable loss reserve development of $0.4 million and $0.8 million.

Note 4. Third Party Reinsurance
 
In the normal course of business, White Mountains’s insurance subsidiaries may seek to limit losses that may arise from catastrophes or other events by reinsuring with third party reinsurers. White Mountains remains liable for risks reinsured in the event that the reinsurer does not honor its obligations under reinsurance contracts.
 
OneBeacon
At September 30, 2016March 31, 2017, OneBeacon had $16.43.4 million and $169.4174.7 million of reinsurance recoverables on paid and unpaid losses. At December 31, 2015,2016, OneBeacon had $7.5$6.6 million and $186.0$172.9 million of reinsurance recoverables on paid and unpaid losses. Reinsurance contracts do not relieve OneBeacon of its obligation to its policyholders. OneBeacon is selective with its reinsurers, placing reinsurance with only those reinsurers having a strong financial condition. OneBeacon monitors the financial strength and ratings of its reinsurers on an ongoing basis. Uncollectible amounts related to the ongoing specialty business historically have not been significant.
In the first quarter of 2016, OneBeacon entered into a 50% quota share reinsurance agreement related to its Financial Institutions business.
Effective May 1, 2016,2017, OneBeacon renewed its property catastrophe reinsurance program through April 30, 2017.2018. The program provides coverage for OneBeacon's property business as well as certain acts of terrorism. Under the program, the first $20.0 million of losses resulting from any single catastrophe are retained, with 100.0% of the next $110.0 million of losses resulting from the catastrophe being reinsured. Any part of a catastrophe loss in excess of $130.0 million would be retained in full. In the event of a catastrophe, OneBeacon's property catastrophe reinsurance program is reinstated for the remainder of the original contract term by paying a reinstatement premium that is based on the percentage of coverage reinstated and the original property catastrophe coverage premium.


Note 5.  Investments Securities

White Mountains’s invested assets consist of investment securities and other long-term investments held for general investment purposes.  The portfolio of investment securities includes fixed maturity investments, short-term investments, common equity securities, and other-long term investments, which are all classified as trading securities. Trading securities are reported at fair value as of the balance sheet date.  RealizedNet realized and unrealized investment gains and losses(losses) on trading securities are reported in pre-tax revenues.
White Mountains’s fixed maturity investments are generally valued using industry standard pricing methodologies. Key inputs include benchmark yields, benchmark securities, reported trades, issuer spreads, bids, offers, credit ratings and prepayment speeds. Income on mortgage-backedmortgage and asset-backed securities is recognized using an effective yield based on anticipated prepayments and the estimated economic life of the securities. When actual prepayments differ significantly from anticipated prepayments, the estimated economic life is recalculated and the remaining unamortized premium or discount is amortized prospectively over the remaining economic life.
Realized investment gains and losses(losses) resulting from sales of investment securities are accounted for using the specific identification method.  Premiums and discounts on all fixed maturity investments are amortized or accreted to income over the anticipated life of the investment.  Short-term investments consist of interest-bearing money market funds, certificates of deposit and other securities which, at the time of purchase, mature or become available for use within one year.  Short-term investments are carried at amortized or accreted cost, which approximated fair value as of September 30, 2016March 31, 2017 and December 31, 2015.2016.
Other long-term investments consist primarily of hedge funds, private equity funds, directunconsolidated private capital investments in privately held common and convertible securities and the OneBeacon surplus notes.Surplus Notes.


Net Investment Income
White Mountains’s net investment income is comprised primarily of interest income associated with White Mountains’s fixed maturity investments and short-term investments and dividend income from its common equity investmentssecurities and interest income from its short-termother long- term investments.
Pre-tax net investment income for the three and nine months endedSeptember 30, 2016 March 31, 2017 and 20152016 consisted of the following:
 Three Months Ended Nine Months Ended Three Months Ended
 September 30, September 30, March 31,
Millions 2016 2015 2016 2015 2017 2016
Investment income:            
Fixed maturity investments $21.3
 $13.7
 $53.7
 $38.5
 $24.5
 $14.5
Short-term investments .2
 —
 .8
 .1
 .3
 .2
Common equity securities 1.3
 1.4
 3.4
 5.7
 2.1
 1.2
Other long-term investments .1
 2.0
 3.5
 2.9
 (.1) 2.8
Total investment income 22.9
 17.1
 61.4
 47.2
 26.8
 18.7
Third-party investment expenses (.4) (.3) (1.8) (4.6) (.7) (.8)
Net investment income, pre-tax $22.5
 $16.8
 $59.6
 $42.6
 $26.1
 $17.9

Net Realized and Unrealized Investment Gains (Losses)
Net realized and unrealized investment gains (losses) consisted of the following:
  Three Months Ended Nine Months Ended
  September 30, September 30,
Millions 2016 2015 2016 2015
Net realized investment gains (losses), pre-tax $8.0
 $(7.4) $267.5
 $49.7
Net unrealized investment gains (losses), pre-tax 18.4
 (36.5) (183.5) (83.6)
Net realized and unrealized investment gains (losses), pre-tax 26.4
 (43.9) 84.0
 (33.9)
Income tax (expense) benefit attributable to net realized and
     unrealized investment gains (losses)
 (5.4) 9.4
 (23.8) 6.9
Net realized and unrealized investment gains (losses), after tax $21.0
 $(34.5) $60.2
 $(27.0)

  Three Months Ended
  March 31,
Millions 2017 2016
Net realized investment gains, pre-tax $1.1
 $256.8
Net unrealized investment gains (losses), pre-tax 50.2
 (227.3)
Net realized and unrealized investment gains, pre-tax 51.3
 29.5
Income tax expense attributable to net realized and
     unrealized investment gains
 (7.2) (8.5)
Net realized and unrealized investment gains, after tax $44.1
 $21.0

Net realized investment gains (losses)
Net realized investment gains (losses) for the three and nine months ended September 30, 2016March 31, 2017 and 20152016 consisted of the following:
  Three Months Ended Three Months Ended
  September 30, 2016 September 30, 2015
Millions Net
realized
gains (losses)		 Net
foreign
currency gains (losses)		 Total net realized
gains (losses)
reflected in
earnings		 Net
realized
losses		 Net
foreign
currency gains (losses)		 Total net realized
losses reflected in
earnings
Fixed maturity investments $2.8
 $—
 $2.8
 $(.1) $—
 $(.1)
Short-term investments .2
 —
 .2
 —
 —
 —
Common equity securities 6.4
 —
 6.4
 (5.9) —
 (5.9)
Other long-term investments (1.4) —
 (1.4) (1.4) —
 (1.4)
Net realized investment gains (losses), pre-tax 8.0
 —
 8.0
 (7.4) —
 (7.4)
Income tax (expense) benefit
   attributable to net realized
   investment gains (losses)
 (2.7) —
 (2.7) 1.5
 —
 1.5
Net realized investment
   gains (losses), after tax
 $5.3
 $—
 $5.3
 $(5.9) $—
 $(5.9)
 Nine Months Ended Nine Months Ended Three Months Ended Three Months Ended
 September 30, 2016 September 30, 2015 March 31, 2017 March 31, 2016
Millions Net
realized
gains (losses)		 Net
foreign
currency gains (losses)		 Total net realized
gains (losses)
reflected in
earnings		 Net
realized
gains		 Net
foreign
currency gains		 Total net realized
gains reflected in
earnings		 Net
realized (losses)
gains		 Net
foreign
currency gains		 Total net realized
(losses) gains
reflected in
earnings		 Net
realized (losses)
gains		 Net
foreign
currency gains (losses)		 Total net realized
(losses) gains
reflected in
earnings
Fixed maturity investments $3.5
 $—
 $3.5
 $2.0
 $—
 $2.0
 $(2.2) $.1
 $(2.1) $(1.1) $—
 $(1.1)
Short-term investments .4
 —
 .4
 —
 —
 —
Common equity securities 267.7
 —
 267.7
 41.6
 .4
 42.0
 1.2
 .1
 1.3
 257.6
 —
 257.6
Other long-term investments (4.1) —
 (4.1) 5.7
 —
 5.7
 1.9
 —
 1.9
 .3
 —
 .3
Net realized investment gains, pre-tax 267.5
 —
 267.5
 49.3
 .4
 49.7
 .9
 .2
 1.1
 256.8
 —
 256.8
Income tax expense
attributable to net realized
investment gains
 (46.0) —
 (46.0) (15.7) —
 (15.7) (.7) —
 (.7) (42.9) —
 (42.9)
Net realized investment
gains, after tax
 $221.5
 $—
 $221.5
 $33.6
 $.4
 $34.0
 $.2
 $.2
 $.4
 $213.9
 $—
 $213.9


Net unrealized investment gains (losses)
The following table summarizes net unrealized investment gains (losses) and changes in the carrying value of investments measured at fair value:
  Three Months Ended Three Months Ended
  September 30, 2016 September 30, 2015
Millions 
Net
unrealized
(losses) gains
 
Net
foreign
currency
gains
 
Total net unrealized
 (losses) gains
reflected in
earnings
 
Net
unrealized gains (losses)
 Net
foreign
currency losses		 
Total net unrealized
gains (losses)
reflected in
earnings
Fixed maturity investments $(4.4) $—
 $(4.4) $3.3
 $—
 $3.3
Common equity securities 12.5
 .2
 12.7
 (30.6) (.2) (30.8)
Other long-term investments 10.0
 .1
 10.1
 (9.0) —
 (9.0)
Net unrealized investment gains (losses), pre-tax 18.1
 .3
 18.4
 (36.3) (.2) (36.5)
Income tax (expense) benefit
attributable to net unrealized
investment gains (losses)		 (2.7) —
 (2.7) 7.9
 —
 7.9
Net unrealized investment
gains (losses), after tax		 $15.4
 $.3
 $15.7
 $(28.4) $(.2) $(28.6)
 Nine Months Ended Nine Months Ended Three Months Ended Three Months Ended
 September 30, 2016 September 30, 2015 March 31, 2017 March 31, 2016
Millions 
Net
unrealized
gains (losses)
 
Net
foreign
currency
gains
 
Total net unrealized
gains (losses)
reflected in
earnings
 
Net
unrealized
gains (losses)
 Net
foreign
currency losses		 
Total net unrealized
gains (losses)
reflected in
earnings
 
Net
unrealized
 gains
 
Net
foreign
currency
gains (losses)
 
Total net unrealized gains
reflected in
earnings
 
Net
unrealized gains (losses)
 Net
foreign
currency gains		 
Total net unrealized
gains (losses)
reflected in
earnings
Fixed maturity investments $38.0
 $—
 $38.0
 $1.3
 $—
 $1.3
 $17.5
 $1.7
 $19.2
 $21.7
 $—
 $21.7
Common equity securities (247.9) 2.6
 (245.3) (56.0) (2.5) (58.5) 29.1
 .5
 29.6
 (249.8) 2.4
 (247.4)
Other long-term investments 23.5
 .3
 23.8
 (25.6) (.8) (26.4) 4.2
 .2
 4.4
 (2.0) .4
 (1.6)
Net unrealized investment (losses) gains, pre-tax (186.4) 2.9
 (183.5) (80.3) (3.3) (83.6)
Income tax benefit attributable to net unrealized investment (losses) 22.2
 —
 22.2
 22.6
 —
 22.6
Net unrealized investment
(losses) gains, after tax		 $(164.2) $2.9
 $(161.3) $(57.7) $(3.3) $(61.0)
Forward contracts —
 (3.0) (3.0) —
 —
 —
Net unrealized investment gains (losses), pre-tax 50.8
 (.6) 50.2
 (230.1) 2.8
 (227.3)
Income tax (expense) benefit
attributable to net unrealized
investment gains (losses)		 (6.5) —
 (6.5) 34.4
 —
 34.4
Net unrealized investment
gains (losses), after tax		 $44.3
 $(.6) $43.7
 $(195.7) $2.8
 $(192.9)

The following table summarizes the amount of total gains (losses) included in earnings attributable to unrealized investment gains (losses) for Level 3 investments for the three and nine months ended September 30, 2016March 31, 2017 and 2015:2016:
 Three Months Ended Nine Months Ended Three Months Ended
 September 30, September 30, March 31,
Millions 2016 2015 2016 2015 2017 2016
Fixed maturity investments $.3
 $(1.0) $1.6
 $(.9) $.2
 $.5
Common equity securities —
 1.1
 —
 4.0
Other long-term investments 7.8
 (6.8) 20.7
 (6.6) (1.9) 1.1
Total unrealized investment gains (losses), pre-tax - Level 3 investments $8.1
 $(6.7) $22.3
 $(3.5)
Total unrealized investment (losses) gains, pre-tax - Level 3 investments $(1.7) $1.6

Investment Holdings
The cost or amortized cost, gross unrealized investment gains (losses), net foreign currency gains (losses), and carrying values of White Mountains’s fixed maturity investments as of September 30, 2016March 31, 2017 and December 31, 20152016 were as follows: 
 September 30, 2016 March 31, 2017
Millions 
Cost or
amortized
cost
 
Gross
unrealized
gains
 
Gross
unrealized
losses
 
Net foreign
currency
gains (losses)
 
Carrying
value
 
Cost or
amortized
cost
 
Gross
unrealized
gains
 
Gross
unrealized
losses
 
Net foreign
currency
gains
 
Carrying
value
U.S. Government and agency obligations $96.6
 $.4
 $—
 $—
 $97.0
 $110.7
 $—
 $(.4) $—
 $110.3
Debt securities issued by corporations 1,212.2
 18.7
 (1.5) —
 1,229.4
 1,680.2
 10.5
 (7.6) 3.7
 1,686.8
Municipal obligations 306.3
 6.2
 (.2) —
 312.3
 328.9
 2.8
 (1.4) —
 330.3
Mortgage and asset-backed securities 2,406.6
 9.6
 (1.7) —
 2,414.5
 2,020.0
 5.1
 (8.7) —
 2,016.4
Foreign government, agency and provincial obligations 1.0
 .2
 —
 —
 1.2
 17.3
 .4
 —
 .2
 17.9
Preferred stocks 78.3
 7.1
 —
 —
 85.4
 8.3
 5.4
 —
 —
 13.7
Total fixed maturity investments $4,101.0
 $42.2
 $(3.4) $—
 $4,139.8
 $4,165.4
 $24.2
 $(18.1) $3.9
 $4,175.4
Less: fixed maturity investments reclassified to assets
held for sale related to SSIE
         8.3
Total fixed maturity investments         $4,131.5


 December 31, 2015 December 31, 2016
Millions 
Cost or
amortized
cost
 
Gross
unrealized
gains
 
Gross
unrealized
losses
 
Net foreign
currency
gains (losses)
 
Carrying
value
 
Cost or
amortized
cost
 
Gross
unrealized
gains
 
Gross
unrealized
losses
 
Net foreign
currency
gains
 
Carrying
value
U.S. Government and agency obligations $160.4
 $—
 $(.4) $—
 $160.0
 $281.7
 $.1
 $(3.5) $—
 $278.3
Debt securities issued by corporations 1,001.0
 4.3
 (5.3) —
 1,000.0
 1,512.6
 8.4
 (13.7) 2.1
 1,509.4
Municipal obligations 227.8
 2.2
 (1.2) —
 228.8
 308.8
 1.9
 (1.7) —
 309.0
Mortgage and asset-backed securities 1,170.6
 2.0
 (5.6) —
 1,167.0
 2,141.7
 2.6
 (11.4) —
 2,132.9
Foreign government, agency and provincial obligations 1.0
 .2
 —
 —
 1.2
 12.9
 .3
 —
 —
 13.2
Preferred stocks 78.3
 4.4
 —
 —
 82.7
 8.3
 5.7
 —
 —
 14.0
Total fixed maturity investments $2,639.1
 $13.1
 $(12.5) $—
 $2,639.7
 $4,266.0
 $19.0
 $(30.3) $2.1
 $4,256.8
Less: fixed maturity investments reclassified to assets
held for sale related to SSIE
         9.5
         (6.6)
Total fixed maturity investments         $2,630.2
         $4,250.2

The cost or amortized cost, gross unrealized investment gains (losses), net foreign currency gains (losses), and carrying values of White Mountains’s common equity securities and other long-term investments as of September 30, 2016March 31, 2017 and December 31, 20152016 were as follows:
 September 30, 2016 March 31, 2017
Millions 
Cost or
amortized
cost
 
Gross
unrealized
gains
 
Gross
unrealized
losses
 Net foreign
currency
(losses)		 
Carrying
value
 
Cost or
amortized
cost
 
Gross
unrealized
gains
 
Gross
unrealized
losses
 Net foreign
currency
gains (losses)		 
Carrying
value
Common equity securities $378.9
 $50.7
 $(4.6) $—
 $425.0
 $537.9
 $65.0
 $(2.4) $.5
 $601.0
Other long-term investments $317.1
 $42.7
 $(6.4) $(2.0) $351.4
 $321.9
 $39.7
 $(23.3) $(6.6) $331.7
 December 31, 2015 December 31, 2016
Millions Cost or
amortized
cost		 Gross
unrealized
gains		 Gross
unrealized
losses		 Net foreign
currency
(losses)		 
Carrying
value
 Cost or
amortized
cost		 Gross
unrealized
gains		 Gross
unrealized
losses		 Net foreign
currency
(losses)		 
Carrying
value
Common equity securities $822.5
 $302.8
 $(11.4) $—
 $1,113.9
 $440.8
 $35.9
 $(2.4) $—
 $474.3
Other long-term investments $304.5
 $32.0
 $(18.4) $(2.3) $315.8
 $314.9
 $40.3
 $(28.0) $(3.9) $323.3

Other Long-term Investments
Other long-term investments consist of the following as of September 30, 2016March 31, 2017 and December 31, 20152016:
 Carrying Value at Carrying Value at
Millions September 30, 2016 December 31, 2015 March 31, 2017 December 31, 2016
Hedge funds and private equity funds, at fair value(1)
 $143.0
 $127.8
 $147.2
 $131.0
Private equity securities and limited liability companies, at fair value(1)(2)
 84.6
 82.1
 72.4
 72.0
Surplus note investments, at fair value(1)
 71.5
 51.5
Private convertible preferred securities(1)
 33.1
 32.7
OneBeacon Surplus Notes, at fair value (1)
 69.6
 71.9
Private convertible preferred securities, at fair value (1)
 30.7
 30.6
Tax advantaged federal affordable housing development fund(2)(3)
 12.8
 14.7
 11.7
 12.3
Partnership investments accounted for under the equity method 3.2
 3.8
 3.0
 3.5
Forward Contracts (4.2) (1.2)
Other 3.2
 3.2
 1.3
 3.2
Total other-long term investments $351.4
 $315.8
 $331.7
 $323.3
(1) See Fair Value Measurements by Level table.
(2) White Mountains holds a 20% ownership interest in OneTitle Holdings LLC (“OTH”) and has provided a $10.0 million surplus note facility under which OTH’s wholly-owned insurance subsidiary, OneTitle National Guaranty Company, Inc. may, under certain circumstances, draw funds. At March 31, 2017, no funds had been drawn on the surplus note facility.
(3) Fund accounted for using the proportional amortization method.



Hedge Funds and Private Equity Funds
White Mountains holds investments in hedge funds and private equity funds, which are included in other long-term investments. The fair value of these investments are generally estimated using the net asset value (“NAV”) of the funds. As of September 30, 2016March 31, 2017, White Mountains held investments in 5 hedge funds and 2420 private equity funds.  The largest investment in a single fund was $34.654.2 million as of September 30, 2016March 31, 2017. and $36.5 million as of December 31, 2016. The following table summarizes investments in hedge funds and private equity funds by investment objective and sector as of September 30, 2016March 31, 2017 and December 31, 20152016:
 September 30, 2016 December 31, 2015 March 31, 2017 December 31, 2016
Millions Fair Value 
Unfunded
Commitments
 Fair Value 
Unfunded
Commitments
 Fair Value 
Unfunded
Commitments
 Fair Value 
Unfunded
Commitments
Hedge funds  
  
  
  
  
  
  
  
Long/short banks and financial $34.6
 $—
 $12.8
 $—
Long/short banks and financials $54.2
 $—
 $36.5
 $—
Long/short equity REIT 20.4
 —
 20.6
 —
 19.7
 —
 19.9
 —
Other 3.4
 —
 3.6
 —
 2.2
 —
 3.4
 —
Total hedge funds 58.4
 —
 37.0
 —
 76.1
 —
 59.8
 —
                
Private equity funds  
  
  
  
  
  
  
  
Aerospace/Defense/Government 24.4
 23.6
 19.4
 25.9
Manufacturing/Industrial 27.7
 21.8
 24.9
 2.5
 18.8
 22.2
 15.9
 22.4
Aerospace/Defense/Government 23.1
 21.8
 19.8
 30.3
Multi-sector 11.0
 2.0
 11.4
 2.0
Direct lending/Mezzanine debt 5.5
 32.0
 1.8
 35.7
Healthcare 3.4
 .4
 3.5
 .4
Energy infrastructure & services 14.2
 3.2
 20.7
 3.4
 2.8
 3.0
 14.1
 3.2
Multi-sector 10.4
 2.0
 14.8
 2.1
Healthcare 3.8
 .4
 3.8
 .4
Private equity secondaries 3.7
 2.1
 4.4
 2.1
 2.5
 2.1
 3.0
 2.1
Financial Services 1.5
 4.5
 1.0
 5.0
Insurance .8
 41.3
 2.0
 41.3
 .9
 41.3
 .8
 41.3
Direct lending/Mezzanine debt .6
 36.9
 —
 —
Real estate .3
 .1
 .4
 .1
 .3
 .1
 .3
 .1
Total private equity funds 84.6
 129.6
 90.8
 82.2
 71.1
 131.2
 71.2
 138.1
Total hedge funds and private equity funds
included in other long-term investments
 $143.0
 $129.6
 $127.8
 $82.2
 $147.2
 $131.2
 $131.0
 $138.1
 

Redemption of investments in certain hedge funds is subject to restrictions including lock-up periods where no redemptions or withdrawals are allowed, restrictions on redemption frequency and advance notice periods for redemptions.  Amounts requested for redemptions remain subject to market fluctuations until the redemption effective date, which generally falls at the end of the defined redemption period. As of March 31, 2017, one hedge fund with a fair value of $38.3 million was subject to a lock-up period that expires on September 1, 2018.
The following summarizes the September 30, 2016March 31, 2017 fair value of hedge funds subject to restrictions on redemption frequency and advance notice period requirements for investments in active hedge funds:
 Notice Period Notice Period
Millions
Redemption frequency
 
30-59 days
notice
 
60-89 days
notice
 
90-119 days
notice
 Total 
30-59 days
notice
 
60-89 days
notice
 
90-119 days
notice
 Total
Monthly $—
 $—
 $—
 $—
 $—
 $—
 $—
 $—
Quarterly 35.6
 —
 —
 35.6
 15.9
 —
 —
 15.9
Semi-annual —
 20.4
 —
 20.4
 38.3
 19.7
 —
 58.0
Annual —
 —
 2.4
 2.4
 —
 —
 2.2
 2.2
Total $35.6
 $20.4
 $2.4
 $58.4
 $54.2
 $19.7
 $2.2
 $76.1
 
Certain of White Mountains’s investments in hedge funds are no longer active and are in the process of disposing of their underlying investments. Distributions from such funds are remitted to investors as the fund’s underlying investments are liquidated.  As of September 30, 2016March 31, 2017, the fair value of hedge funds in liquidation was $1.0 million.had no value. The actual amount of theany final distribution remittances remain subject to market fluctuations. The date at which such remittances, if any, will be received is not determinable as of September 30, 2016March 31, 2017.

White Mountains has also submitted redemption requests for certain of its investments in active hedge funds.  As of September 30, 2016March 31, 2017, redemptions of $2.4$2.2 million are outstanding that would be subject to market fluctuations. The date at which such redemptions will be received is not determinable as of September 30, 2016March 31, 2017. Redemptions are recorded as receivables when the investment is no longer subject to market fluctuations.
Investments in private equity funds are generally subject to a “lock-up”lock-up period during which investors may not request a redemption. Distributions prior to the expected termination date of the fund may be limited to dividends or proceeds arising from the liquidation of the fund’s underlying investments. In addition, certain private equity funds provide an option to extend the lock-up period at either, the sole discretion of the fund manager or upon agreement between the fund and the investors.
As of September 30, 2016March 31, 2017, investments in private equity funds were subject to lock-up periods as follows:
Millions 1-3 years 3 – 5 years 5 – 10 years >10 years Total 1-3 years 3 �� 5 years 5 – 10 years >10 years Total
Private Equity Funds — expected lock-up period remaining $23.5 $3.8 $56.3 $1.0 $84.6 $18.4 $23.3 $22.2 $7.2 $71.1

OneBeacon Surplus Notes
In the fourth quarter of 2014, in conjunction with OneBeacon's sale of its runoff business to an affiliate of Armour Group Holdings Limited (the "OneBeacon“OneBeacon Runoff Transaction"Transaction”), OneBeacon provided financing in the form of surplus notesthe OneBeacon Surplus Notes with a par value of $101.0 million, which had a fair value of $71.5$69.6 million and $51.5$71.9 million as of September 30, 2016March 31, 2017 and December 31, 2015, respectively.2016. Subsequent to closing, the surplus notesOneBeacon Surplus Notes are included in OneBeacon’s investment portfolio, classified within other long-term investments.
The internal valuation model used to estimate the fair value of the OneBeacon Surplus Notes is based on discounted expected cash flows.flows using information as of the measurement date. The estimated fair value of the surplus notes is sensitive to changes in U.S. treasury rates and public corporate debt credit spreads, as well as changes in estimates with respect to other variables including a discount to reflect the private nature of the notes (and the related lack of liquidity), the credit quality of the notes, based on the financial performance of the Issuer relative to expectations, and the timing, amount, and likelihood of interest and principal payments on the notes, which are subject to regulatory approval and therefore may vary from the contractual terms. An interest paymentFor the purposes of $2.4 million was received in the nine months ended September 30, 2016.estimating fair value, OneBeacon has assumed for valuation purposes that subsequentall accrued but unpaid interest on the seller priority note since the date of issuance is paid in 2020, with regular annual interest payments will beginon both the seller priority note and the pari passu note beginning in year five (2020)2021, all accrued but unpaid interest on the pari passu note since the date of issuance is paid in 2025 and principal repayments begin on a graduated basis in year ten (2025)2030 for the seller priority note and year fifteen (2030)2035 for the pari passu note. Although these variables involve considerable judgment, the CompanyOneBeacon does not currently expect any resulting changes in the estimated value of the surplus notes to be material to its financial position.

An interest payment of $2.4 million was received in the three months ended March 31, 2016.
Below is a table illustrating the valuation adjustments taken to arrive at estimated fair value of the surplus notesOneBeacon Surplus Notes as of September 30, 2016March 31, 2017 and December 31, 2015:2016:
 Type of Surplus Note Total as of September 30, 2016 Total as of December 31, 2015 Type of Surplus Note Total as of March 31, 2017 Total as of December 31, 2016
Millions Seller Priority Pari Passu  Seller Priority Pari Passu 
Par Value $57.9
 $43.1
 $101.0
 $101.0
 $57.9
 $43.1
 $101.0
 $101.0
Fair value adjustments to reflect:                
Current market rates on public debt and contract-based repayments(1)
 5.2
 (4.4) .8
 (15.1) 7.2
 1.8
 9.0
 5.1
Regulatory approval (2)
 (4.2) (11.7) (15.9) (24.2) 2.9
 (13.2) (10.3) (15.6)
Liquidity adjustment (3)
 (9.9) (4.5) (14.4) (10.2) (19.9) (10.2) (30.1) (18.6)
Total adjustments (8.9) (20.6) (29.5) (49.5) (9.8) (21.6) (31.4) (29.1)
Fair value (4)
 $49.0
 $22.5
 $71.5
 $51.5
 $48.1
 $21.5
 $69.6
 $71.9
(1) 
Represents the value of the surplus notes, at current market yields on comparable publicly traded debt, and assuming issuer is allowed to make principal and interest payments when its financial capacity is available, as measured by statutory capital in excess of a 250% RBC score.score under the National Association of Insurance Commissioners’ risk-based capital standards for property and casualty companies. The favorable year-to-date change in impact is due principally to the narrowing of non-investment grade credit spreads as well as the time value of money benefit from moving three months closer to modeled cash receipts.
(2) 
Represents anticipated timing ofdelay in securing regulatory approvals forof interest and principal payments to reflect graduated changes in Issuer’sIssuer's statutory surplus. The monetary impact of the anticipated timingdelay is measured based on credit spreads of publicly traded debtpublic securities with roughly equivalent percentages of discounted payments missed. The favorable year-to-date change in impact is driven primarily by the narrowing of non-investment grade credit spreads, which causes negative valuation impact from the anticipated delay in securing regulatory approval to be lower.
(3)Represents impact of liquidity spread to account for OneBeacon’sOneBeacon's sole ownership of the surplus notes, lack of a trading market, and unique nature of the ongoing regulatory approval risk.process. The unfavorable year-to-date change in impact is due largely to an increase in the assumed liquidity spread to 400 basis points at March 31, 2017 from 250 basis points at December 31, 2016.
(4) The increasedecrease in the fair value of the surplus notes during the ninethree months ended September 30, 2016March 31, 2017 was driven primarily by an increase in the assumed liquidity spread, partially offset by the narrowing of non-investment grade credit spreads as well as the time value of money benefit generated by moving ninethree months closer to modeled cash receipts, partially offset by the impact of an interest payment received in the first quarter of 2016.receipts.

Fair value measurements as of September 30, 2016March 31, 2017
Fair value measurements are categorized into a hierarchy that distinguishes between inputs based on market data from independent sources (“observable inputs”) and a reporting entity’s internal assumptions based upon the best information available when external market data is limited or unavailable (“unobservable inputs”). Quoted prices in active markets for identical assets or liabilities have the highest priority (“Level 1”), followed by observable inputs other than quoted prices, including prices for similar but not identical assets or liabilities (“Level 2”) and unobservable inputs, including the reporting entity’s estimates of the assumptions that market participants would use, having the lowest priority (“Level 3”).
As of March 31, 2017 and December 31, 2016, White Mountains used quoted market prices or other observable inputs to determine fair value for 91%approximately 93% and 94% of its investment portfolio as of September 30, 2016.portfolio. Investments valued using Level 1 inputs include fixed maturity investments, primarily investments in U.S. Treasuries, common equity securities and short-term investments, which include U.S. Treasury Bills.Bills and common equity securities. Investments valued using Level 2 inputs are primarily comprised of fixed maturity investments, which have been disaggregated into classes, including debt securities issued by corporations, municipal obligations, mortgage and asset-backed securities, foreign government, agency and provincial obligations and preferred stocks. Fair value estimates for investments that trade infrequently and have few or no observable market prices are classified as Level 3 measurements. Investments valued using Level 2 inputs also include certain ETFspassive exchange traded funds (“ETFs”) that track U.S. stock indices such as the S&P 500 but are traded on foreign exchanges and that management values using the fund’sfund manager’s published NAV to account for the difference in market close times. Fair value estimates for investments that trade infrequently and have few or no observable market prices are classified as Level 3 measurements. Level 3 fair value estimates based upon unobservable inputs include White Mountains’s investments in surplus notes,the OneBeacon Surplus Notes, as well as certain investments in fixed maturity investments, common equity securities and other long-term investments where quoted market prices are unavailable or are not considered reasonable. Transfers between levels are based on investments held as of the beginning of the period.
White Mountains uses brokers and outside pricing services to assist in determining fair values. For investments in active markets, White Mountains uses the quoted market prices provided by outside pricing services to determine fair value. The outside pricing services White Mountains uses have indicated that they will only provide prices where observable inputs are available. In circumstances where quoted market prices are unavailable or are not considered reasonable, White Mountains estimates the fair value using industry standard pricing methodologies and observable inputs such as benchmark yields, reported trades, broker-dealer quotes, issuer spreads, benchmark securities, bids, offers, credit ratings, prepayment speeds, reference data including research publications and other relevant inputs. Given that many fixed maturity investments do not trade on a daily basis, the outside pricing services evaluate a wide range of fixed maturity investments by regularly drawing parallels from recent trades and quotes of comparable securities with similar features. The characteristics used to identify comparable fixed maturity investments vary by asset type and take into account market convention.

White Mountains’s process to assess the reasonableness of the market prices obtained from the outside pricing sources
covers substantially all of its fixed maturity investments and includes, but is not limited to, the evaluation of pricing methodologies and a review of the pricing services’ quality control processes and procedures on at least an annual basis, a comparison of market prices toits invested asset prices obtained from alternate independent pricing vendors on at least a semi-annual basis, monthly analytical reviews of certain prices and a review of the underlying assumptions utilized by the pricing serviceservices for selectedselect measurements on an ad hoc basis throughout the year. White Mountains also performs back-testing of selected sales activity to determine whether there are any significant differences between the market price used to value the security prior to sale and the actual sale price on an ad-hoc basis throughout the year. Prices provided by the pricing services that vary by more than 5% and $1.0 million from the expected price based on these assessment procedures are considered outliers. Also considered outliers are prices that haven’thave not changed from period to period and prices that have trended unusually compared to market conditions. In circumstances where the results of White Mountains’s review process does not appear to support the market price provided by the pricing services, White Mountains challenges the vendor provided price. If White Mountains cannot gain satisfactory evidence to support the challenged price, it relies upon its own pricing methodologies to estimate the fair value of the security in question.

The valuation process described above is generally applicable to all of White Mountains’s fixed maturity investments. The techniques and inputs specific to asset classes within White Mountains’s fixed maturity investments for Level 2 securities that use observable inputs are as follow:follows:

Debt securities issued by corporations: The fair value of debt securities issued by corporations is determined from an evaluateda pricing processevaluation technique that uses information from market sources and integrates relative credit information, observed market movements, and sector news. Key inputs include benchmark yields, reported trades, broker-dealer quotes, issuer spreads, two-sided markets, benchmark securities, bids, offers, and reference data including sector, coupon, credit quality ratings, duration, credit enhancements, early redemption features and market research publications.

Mortgage and asset-backed securities: The fair value of mortgage and asset-backed securities is determined from an evaluateda pricing processevaluation technique that uses information from market sources and leveraging similar securities. Key inputs include benchmark yields, reported trades, underlying tranche cash flow data, collateral performance, plus new issue data, as well as broker-dealer quotes, issuer spreads, two-sided markets, benchmark securities, bids, offers, and reference data including issuer, vintage, loan type, collateral attributes, prepayment speeds, default rates, recovery rates, cash flow stress testing, credit quality ratings and market research publications.

Municipal obligations: The fair value of municipal obligations is determined from a pricing processevaluation technique that uses information from market makers, brokers-dealers, buy-side firms, and analysts along with general market information. Key inputs include benchmark yields, reported trades, issuer financial statements, material event notices and new issue data, as well as broker-dealer quotes, issuer spreads, two-sided markets, benchmark securities, bids, offers, and reference data including type, coupon, credit quality ratings, duration, credit enhancements, geographic location and market research publications.

Foreign government, agency and provincial obligations: The fair value of foreign government, agency and provincial obligations is determined from an evaluateda pricing processevaluation technique that uses feeds from data sources in each respective country, including active market makers and inter-dealer brokers. Key inputs include benchmark yields, reported trades, broker-dealer quotes, two-sided markets, benchmark securities, bids, offers, local exchange prices, foreign exchange rates and reference data including coupon, credit quality ratings, duration and market research publications.

Preferred stocks: The fair value of preferred stocks is determined from an evaluateda pricing processevaluation technique that calculates the appropriate spread over a comparable security for each issue. Key inputs include exchange prices (underlying and common stock of same issuer), benchmark yields, reported trades, broker-dealer quotes, issuer spreads, two-sided markets, benchmark securities, bids, offers, and reference data including sector, coupon, credit quality ratings, duration, credit enhancements, early redemption features and market research publications.

Level 3 valuations are generated from techniques that use assumptions not observable in the market. These unobservable assumptions reflect White Mountains’s assumptions that market participants would use in valuing the investment. Generally, certain securities may start out as Level 3 when they are originally issued but as observable inputs become available in the market, they may be reclassified to Level 2.
White Mountains employs a number of procedures to assess the reasonableness of the fair value measurements for its other long-term investments, including obtaining and reviewing periodic and audited annual financial statements of hedge funds and private equity funds and discussing each fund’s pricing with the fund manager throughout the year. However, since the fund managers do not provide sufficient information to evaluate the pricing inputs and methods for each underlying investment, the inputs are considered to be unobservable. The fair value of White Mountains’s investments in hedge funds and private equity funds has generally been determined using net asset value.the fund manager's NAV. In the event White Mountains believes that its estimate of NAV of a hedge fund or private equity fund differs from that reported by the fund manager due to illiquidity or other factors, White Mountains will adjust the reported NAV to more appropriately represent the fair value of its interest in the hedge fund or private equity fund investment. As of March 31, 2017 and December 31, 2016, White Mountains recorded negative adjustments of $1.0 million and $5.0 million to the reported NAV of certain investments in hedge funds and private equity funds.


Fair Value Measurements by Level
The following tables summarize White Mountains’s fair value measurements for investments as of September 30, 2016March 31, 2017 and December 31, 20152016 by level. The major security types were based on the legal form of the securities. White Mountains has disaggregated its fixed maturity investments based on the issuing entity type, which impacts credit quality, with debt securities issued by U.S. government entities carrying minimal credit risk, while the credit and other risks associated with other issuers, such as corporations, foreign governments, municipalities or entities issuing mortgage-backed ormortgage and asset-backed securities vary depending on the nature of the issuing entity type. White Mountains further disaggregates debt securities issued by corporations and common equity securities by industry sector because investors often reference commonly used benchmarks and their subsectors to monitor risk and performance. Accordingly, White Mountains has further disaggregated these asset classes into subclasses based on the similar sectors and industry classifications it uses to evaluate investment risk and performance against commonly used benchmarks, such as the Bloomberg Barclays U.S. Intermediate Aggregate and S&P 500 indices. The fair value measurements for derivative assets associated with White Mountains’s variable annuity business are presented in Note 9.
 September 30, 2016 March 31, 2017
Millions Fair Value Level 1 Level 2 Level 3 Fair Value Level 1 Level 2 Level 3
Fixed maturity investments:  
  
  
  
  
  
  
  
U.S. Government and agency obligations $97.0
 $87.5
 $9.5
 $—
 $110.3
 $100.8
 $9.5
 $—
                
Debt securities issued by corporations:  
        
      
Consumer 340.5
 —
 340.5
 —
 362.9
 —
 362.9
 —
Financials 263.3
 —
 263.3
 —
Health Care 193.3
 —
 193.3
 —
 248.4
 —
 248.4
 —
Financials 170.8
 —
 170.8
 —
Utilities 229.3
 —
 229.3
 —
Industrial 132.2
 —
 132.2
 —
 174.5
 —
 174.5
 —
Utilities 97.1
 —
 97.1
 —
Communications 89.4
 —
 89.4
 —
 135.9
 —
 135.9
 —
Technology 79.6
 —
 79.6
 —
 118.1
 —
 118.1
 —
Materials 72.9
 —
 72.9
 —
 101.9
 —
 101.9
 —
Energy 53.6
 —
 53.6
 —
 52.5
 —
 52.5
 —
Total debt securities issued by corporations 1,229.4
 —
 1,229.4
 —
 1,686.8
 —
 1,686.8
 —
                
Mortgage and asset-backed securities 2,414.5
 —
 2,378.5
 36.0
 2,016.4
 —
 1,958.1
 58.3
Municipal obligations 312.3
 —
 312.3
 —
 330.3
 —
 330.3
 —
Foreign government, agency and provincial obligations 1.2
 .6
 .6
 —
 17.9
 .6
 17.3
 —
Preferred stocks 85.4
 —
 13.8
 71.6
 13.7
 —
 13.7
 —
Total fixed maturity investments(4)
 4,139.8
 88.1
 3,944.1
 107.6
 4,175.4
 101.4
 4,015.7
 58.3
                
Short-term investments(5)(4)
 305.6
 278.6
 27.0
 —
 230.9
 227.9
 3.0
 —
                
Common equity securities:  
  
  
  
  
  
  
  
Exchange traded funds (1)
 113.2
 90.5
 22.7
 —
 384.8
 330.6
 54.2
 —
Consumer 111.2
 111.2
 —
 —
 32.2
 32.2
 —
 —
Health Care 27.1
 27.1
 —
 —
Financials 18.2
 18.2
 —
 —
Technology 16.1
 16.1
 —
 —
Communications 33.3
 33.3
 —
 —
 13.9
 13.9
 —
 —
Health Care 33.2
 33.2
 —
 —
Technology 28.1
 28.1
 —
 —
Financials 11.4
 11.4
 —
 —
Industrial 11.1
 11.1
 —
 —
 9.0
 9.0
 —
 —
Energy 5.5
 5.5
 —
 —
 7.7
 7.7
 —
 —
Materials 5.1
 5.1
 —
 —
Utilities 1.0
 1.0
 —
 —
Other 78.0
 —
 78.0
 —
 85.9
 —
 85.9
 —
Total common equity securities 425.0
 324.3
 100.7
 —
 601.0
 460.9
 140.1
 —
                
Other long-term investments (2)(3)
 192.4
 —
 —
 192.4
 174.0
 —
 —
 174.0
Total investments(4)
 $5,062.8
 $691.0
 $4,071.8
 $300.0
Total investments $5,181.3
 $790.2
 $4,158.8
 $232.3
(1) ETFs traded on foreign exchanges are priced using the fund's published NAV to account for the difference in market close times and are therefore designated a level 2 measurement.
(2) Excludes carrying value of $3.2$3.0 associated with other long-term investment limited partnerships accounted for using the equity method.method and $(4.2) related to foreign currency forward contracts. Excludes carrying value of $12.8$11.7 associated with a tax advantaged federal affordable housing development fund accounted for using the proportional amortization method.
(3) Excludes carrying value of $143.0$147.2 associated with hedge funds and private equity funds for which fair value is measured at net asset valueNAV using the practical expedient.
(4)Includes carrying value of $8.3 in fixed maturity investments and $0.1 in short-term investments that are classified as assets held for sale related to SSIE.
(5) Short-term investments are measured at amortized cost, which approximates fair value.





 December 31, 2015 December 31, 2016
Millions Fair Value Level 1 Level 2 Level 3 Fair Value Level 1 Level 2 Level 3
Fixed maturity investments:  
  
  
  
  
  
  
  
U.S. Government and agency obligations $160.0
 $133.4
 $26.6
 $—
 $278.3
 $268.8
 $9.5
 $—
                
Debt securities issued by corporations:  
  
  
  
  
  
  
  
Consumer 253.3
 —
 253.3
 —
 385.6
 —
 385.6
 —
Health Care 244.2
 —
 244.2
 —
Utilities 180.3
 —
 180.3
 —
Financials 175.9
 —
 175.9
 —
 176.0
 —
 176.0
 —
Health Care 151.3
 —
 151.3
 —
Industrial 135.6
 —
 135.6
 —
 146.4
 —
 146.4
 —
Energy 82.0
 —
 82.0
 —
Utilities 61.5
 —
 61.5
 —
Technology 60.0
 —
 60.0
 —
Communications 49.2
 —
 49.2
 —
 131.4
 —
 131.4
 —
Materials 31.2
 —
 31.2
 —
 102.6
 —
 102.6
 —
Technology 89.4
 —
 89.4
 —
Energy 53.5
 —
 53.5
 —
Total debt securities issued by corporations 1,000.0
 —
 1,000.0
 —
 1,509.4
 —
 1,509.4
 —
                
Mortgage and asset-backed securities 1,167.0
 —
 1,167.0
 —
 2,132.9
 —
 2,132.9
 —
Municipal obligations 228.8
 —
 228.8
 —
 309.0
 —
 309.0
 —
Foreign government, agency and provincial obligations 1.2
 .6
 .6
 —
 13.2
 .6
 12.6
 —
Preferred stocks 82.7
 —
 12.7
 70.0
 14.0
 —
 14.0
 —
Total fixed maturity investments(4)
 2,639.7
 134.0
 2,435.7
 70.0
 4,256.8
 269.4
 3,987.4
 —
                
Short-term investments(4)(5)
 211.3
 211.3
 —
 —
 287.1
 274.4
 12.7
 —
                
Common equity securities:  
  
  
  
  
  
  
  
Exchange traded funds(1)
 321.6
 270.4
 51.2
 —
Health Care 20.9
 20.9
 —
 —
Consumer 12.9
 12.9
 —
 —
Financials 653.2
 653.2
 —
 —
 11.6
 11.6
 —
 —
Exchange traded funds(1)
 183.3
 162.0
 21.3
 —
Consumer 70.0
 70.0
 —
 —
Technology 11.0
 11.0
 —
 —
Communications 43.7
 43.7
 —
 —
 10.5
 10.5
 —
 —
Health Care 35.7
 35.7
 —
 —
Technology 27.0
 27.0
 —
 —
Energy 3.7
 3.7
 —
 —
Industrial 26.6
 26.6
 —
 —
 2.2
 2.2
 —
 —
Other 74.4
 —
 74.4
 —
 79.9
 —
 79.9
 —
Total common equity securities 1,113.9
 1,018.2
 95.7
 —
 474.3
 343.2
 131.1
 —
                
Other long-term investments (2)(3)
 169.5
 —
 —
 169.5
 177.7
 —
 —
 177.7
Total investments(4)
 $4,134.4
 $1,363.5
 $2,531.4
 $239.5
 $5,195.9
 $887.0
 $4,131.2
 $177.7
(1) ETFs traded on foreign exchanges are priced using the fund's published NAV to account for the difference in market close times and are therefore designated a level 2 measurement.
(2) Excludes carrying value of $3.8$3.5 associated with other long-term investment limited partnerships accounted for using the equity method.method and $(1.2) related to foreign currency forward contracts. Excludes carrying value of $14.7$12.3 associated with a tax advantaged federal affordable housing development fund accounted for using the proportional amortization method.
(3) Excludes carrying value of $127.8$131.0 associated with hedge funds and private equity funds for which fair value is measured at net asset valueNAV using the practical expedient.
(4) Includes carrying value of $9.5$6.6 in fixed maturity investments and $0.1 in short-term investments that are classified as assets held for sale related to SSIE.
(5) Short-term investments are measured at amortized cost, which approximates fair value.





Debt securities issued by corporations
The following table summarizes the ratings of debt securities issued by corporations held in White Mountains’s investment portfolio as of September 30, 2016March 31, 2017 and December 31, 20152016:
 Fair Value at Fair Value at
Millions September 30, 2016 December 31, 2015 March 31, 2017 December 31, 2016
AAA $—
 $—
AA 106.4
 95.2
 93.1
 100.9
A 331.3
 397.7
 484.7
 381.9
BBB 602.3
 507.1
 846.5
 786.5
BB 173.0
 —
 240.2
 214.0
B 16.4
 —
 22.3
 26.1
Debt securities issued by corporations(1)
 $1,229.4
 $1,000.0
 $1,686.8
 $1,509.4
(1) Credit ratings are assigned based on the following hierarchy: 1) Standard & Poor’s Financial Services LLC ("Standard & Poor's") and 2) Moody’s.Moody's Investor Services ("Moody’s").

Mortgage and Asset-backed Securities
White Mountains purchases commercial mortgage-backed securities (“CMBS”) and residential mortgage-backed securities (“RMBS”) with the goal of maximizing risk adjusted returns in the context of a diversified portfolio. White Mountains considers sub-prime mortgage-backed securities as those that have underlying loan pools that exhibit weak credit characteristics, or those that are issued from dedicated sub-prime shelves or dedicated second-lien shelf registrations (i.e., White Mountains considers investments backed primarily by second-liens to be sub-prime risks regardless of credit scores or other metrics). White Mountains did not hold any RMBS categorized as sub-prime as of March 31, 2017.
White Mountains categorizes mortgage-backed securities as “non-prime” (also called “Alt A” or “A-”) if they are backed by collateral that has overall credit quality between prime and sub-prime based on White Mountains’s review of the characteristics of their underlying mortgage loan pools, such as credit scores and financial ratios. As of March 31, 2017, White Mountains did not hold any RMBS classified as non-prime. White Mountains’s non-agency RMBS portfolio is generally moderate-term and structurally senior. White Mountains does not own any collateralized loan obligations. White Mountains does not own any collateralized debt obligations, with the exception of $27.0$33.9 million of non-agency residential mortgageRMBS resecuritization tranches, each a senior tranche in its own right and each collateralized by a single earlier vintage Super Senior or Senior non-agency RMBS.
The following table summarizes the carrying value of White Mountains’s mortgage and asset-backed securities as of September 30, 2016March 31, 2017 and December 31, 2015:2016:
 September 30, 2016 December 31, 2015 March 31, 2017 December 31, 2016
Millions Fair Value Level 2 Level 3 Fair Value Level 2 Level 3 Fair Value Level 2 Level 3 Fair Value Level 2 Level 3
Mortgage-backed securities:  
  
  
  
  
  
  
  
  
  
  
  
Agency:  
  
  
  
  
  
  
  
  
  
  
  
GNMA $301.1
 $301.1
 $—
 $265.5
 $265.5
 $—
 $249.0
 $249.0
 $—
 $283.9
 $283.9
 $—
FNMA 239.4
 239.4
 —
 42.2
 42.2
 —
 270.1
 270.1
 —
 278.3
 278.3
 —
FHLMC 35.5
 35.5
 —
 22.8
 22.8
 —
 86.1
 86.1
 —
 89.8
 89.8
 —
Total Agency(1)
 576.0
 576.0
 —
 330.5
 330.5
 —
 605.2
 605.2
 —
 652.0
 652.0
 —
Non-agency:  
  
  
  
  
  
  
  
  
  
  
  
Residential 213.4
 177.4
 36.0
 133.2
 133.2
 —
 309.9
 251.6
 58.3
 205.3
 205.3
 —
Commercial 113.7
 113.7
 —
 140.4
 140.4
 —
 126.9
 126.9
 —
 127.5
 127.5
 —
Total Non-agency 327.1
 291.1
 36.0
 273.6
 273.6
 —
 436.8
 378.5
 58.3
 332.8
 332.8
 —
                        
Total mortgage-backed securities 903.1
 867.1
 36.0
 604.1
 604.1
 —
 1,042.0
 983.7
 58.3
 984.8
 984.8
 —
Other asset-backed securities:  
      
      
      
    
Credit card receivables 534.0
 534.0
 —
 217.7
 217.7
 —
 383.0
 383.0
 —
 438.3
 438.3
 —
Vehicle receivables 721.8
 721.8
 —
 269.7
 269.7
 —
 353.0
 353.0
 —
 479.5
 479.5
 —
Other 255.6
 255.6
 —
 75.5
 75.5
 —
 238.4
 238.4
 —
 230.3
 230.3
 —
Total other asset-backed securities 1,511.4
 1,511.4
 —
 562.9
 562.9
 —
 974.4
 974.4
 —
 1,148.1
 1,148.1
 —
Total mortgage and asset-backed securities $2,414.5
 $2,378.5
 $36.0
 $1,167.0
 $1,167.0
 $—
 $2,016.4
 $1,958.1
 $58.3
 $2,132.9
 $2,132.9
 $—
(1)  Represents publicly traded mortgage-backed securities which carry the full faith and credit guaranty of the U.S. government (i.e., GNMA) or are guaranteed by a government sponsored entity (i.e., FNMA, FHLMC).


Non-agency Mortgage-backed Securities
The security issuance years of White Mountains’s investments in non-agency RMBS and non-agency CMBS securities as of September 30, 2016March 31, 2017 are as follows:
       Security Issuance Year              Security Issuance Year      
Millions Fair Value 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 Fair Value 2004 2005 2006 2008 2010 2011 2012 2013 2014 2015 2016 2017
Non-agency
RMBS
 $213.4
 $20.6
 $6.0
 $3.2
 $—
 $3.0
 $—
 $8.6
 $11.0
 $6.0
 $11.4
 $59.6
 $48.0
 $36.0
 $309.9
 $18.1
 $5.3
 $2.8
 $2.4
 $6.0
 $8.4
 $4.2
 $19.8
 $49.4
 $104.2
 $34.5
 $54.8
Non-agency
CMBS
 113.7
 —
 —
 —
 —
 —
 —
 4.6
 —
 18.3
 11.6
 23.5
 45.9
 9.8
 126.9
 —
 —
 —
 —
 4.1
 —
 18.1
 11.5
 23.4
 44.2
 25.6
 —
Total $327.1
 $20.6
 $6.0
 $3.2
 $—
 $3.0
 $—
 $13.2
 $11.0
 $24.3
 $23.0
 $83.1
 $93.9
 $45.8
 $436.8
 $18.1
 $5.3
 $2.8
 $2.4
 $10.1
 $8.4
 $22.3
 $31.3
 $72.8
 $148.4
 $60.1
 $54.8
 
Non-agency Residential Mortgage-backed Securities
The classification of the underlying collateral quality and the tranche levels of White Mountains’s non-agency RMBS securities are as follows as of September 30, 2016March 31, 2017:
Millions Fair Value 
Super Senior (1)
 
Senior (2)
 
Subordinate (3)
 Fair Value 
Super Senior (1)
 
Senior (2)
 
Subordinate (3)
Prime $213.4
 $122.8
 $90.6
 $—
 $309.9
 $104.9
 $205.0
 $—
Non-prime —
 —
 —
 —
 —
 —
 —
 —
Sub-prime —
 —
 —
 —
 —
 —
 —
 —
Total $213.4
 $122.8
 $90.6
 $—
 $309.9
 $104.9
 $205.0
 $—
(1) At issuance, Super Senior, or in the case of resecuritization, the underlying securities, were rated “AAA” by Standard & Poor’s, “Aaa” by Moody’s or “AAA” by Fitch and were senior to other “AAA” or “Aaa” bonds.
(2) At issuance, Senior, or in the case of resecuritization, the underlying securities, were rated “AAA” by Standard & Poor’s, “Aaa” by Moody’s or “AAA” by Fitch and were senior to non-“AAA” or non-“Aaa” bonds.
(3) At issuance, Subordinate were not rated “AAA” by Standard & Poor’s, “Aaa” by Moody’s or “AAA” by Fitch and were junior to “AAA” or “Aaa” bonds. 

Non-agency Commercial Mortgage-backed Securities
White Mountains’s non-agency CMBS portfolio is generally short-term and structurally senior, with approximately 30more than 25 points of subordination on average for both fixed rate CMBS and floating rate CMBS as of September 30, 2016.March 31, 2017. In general, subordination represents the percentage principal loss on the underlying collateral that would have to be absorbed by other securities lower in the capital structure before the more senior security incurs a loss.  As of September 30, 2016March 31, 2017, none of the underlying loans of the non-agency CMBS held by White Mountains were reported as non-performing.
The amount of fixed and floating rate securities and their tranche levels of White Mountains’s non-agency CMBS securities are as follows as of September 30, 2016March 31, 2017:
Millions Fair Value 
Super Senior (1)
 
Senior (2)
 
Subordinate (3)
 Fair Value 
Super Senior (1)
 
Senior (2)
 
Subordinate (3)
Fixed rate CMBS $102.3
 $8.9
 $55.2
 $38.2
 $115.2
 $1.6
 $70.1
 $43.5
Floating rate CMBS 11.4
 —
 —
 11.4
 11.7
 —
 —
 11.7
Total $113.7
 $8.9
 $55.2
 $49.6
 $126.9
 $1.6
 $70.1
 $55.2
(1)  At issuance, Super Senior, or in the case of resecuritization, the underlying securities, were rated “AAA” by Standard & Poor’s, “Aaa” by Moody’s or “AAA” by Fitch Ratings (“Fitch”) and were senior to other “AAA” or “Aaa” bonds.
(2) At issuance, Senior, or in the case of resecuritization, the underlying securities, were rated “AAA” by Standard & Poor’s, “Aaa” by Moody’s or “AAA” by Fitch and were senior to non-“AAA” or non-“Aaa” bonds.
(3) At issuance, Subordinate were not rated “AAA” by Standard & Poor’s, “Aaa” by Moody’s or “AAA” by Fitch and were junior to “AAA” or “Aaa” bonds. 


Rollforward of Fair Value Measurements by Level
 White Mountains uses quoted market prices where available as the inputs to estimate fair value for its investments in active markets. Such measurements are considered to be either Level 1 or Level 2 measurements, depending on whether the quoted market price inputs are for identical securities (Level 1) or similar securities (Level 2). Level 3 measurements for fixed maturity investments, common equity securities, and other long-term investments as of September 30,March 31, 2017 and 2016 and 2015 consist of securities for which the estimated fair value has not been determined based upon quoted market price inputs for identical or similar securities.
The following tables summarize the changes in White Mountains’s fair value measurements by level for the ninethree months ended September 30, 2016March 31, 2017 and 20152016:
 Level 3 Investments  Level 3 Investments 
MillionsLevel 1 investments
Level 2 
investments
Fixed
maturity investments
Common
equity
securities
Other long-term
investments
Hedge Funds and Private Equity Funds measured at NAV(3)
 Total Level 1 investments
Level 2 
investments
Fixed
maturity investments
Common
equity
securities
Other long-term
investments
Hedge Funds and Private Equity Funds measured at NAV(3)
 Total 
Balance at January 1, 2016$1,152.2
$2,531.4
$70.0
$—
$169.5
$127.8
 $4,050.9
(1)(2)(4) 
Balance at January 1, 2017$612.5
$4,118.5
$—
$—
$177.7
$131.0
 $5,039.7
(1)(2)(4) 
Total realized and
unrealized gains (losses)
20.0
42.7
1.6
—
20.7
(1.0) 84.0
 22.4
25.5
.2
—
(1.9)8.2
 54.4
 
Amortization/Accretion—
(13.2)—
—
—
—
 (13.2) —
(6.5)—
—
—
—
 (6.5) 
Purchases1,577.5
2,989.4
120.8
—
2.2
33.0
 4,722.9
 124.5
890.4
58.1
—
.2
22.1
 1,095.3
 
Sales(2,337.3)(1,587.5)(2.8)—
��
(16.8) (3,944.4) (197.1)(866.9)

—
(2.0)(14.1) (1,080.1) 
Deconsolidation of SSIE—
(5.2)—
—
—
  (5.2) 
Transfers in—
82.0
—
—
—
—
 82.0
  
—
—
—
—
—
—
 —
  
Transfers out—
—
(82.0)—
—
—
 (82.0)
  
—
—
—
—
—
—
 —
  
Balance at
September 30, 2016		$412.4
$4,044.8
$107.6
$—
$192.4
$143.0
 $4,900.2
(1)(2)(4) 
Balance at
March 31, 2017		$562.3
$4,155.8
$58.3
$—
$174.0
$147.2
 $5,097.6
(1)(2) 
(1)  Excludes carrying value of $3.83.5 and $3.23.0 at January 1, 20162017 and September 30, 2016March 31, 2017 associated with other long-term investments accounted for using the equity method.method and $(1.2) and $(4.2) related to foreign currency forward contracts. Excludes carrying value of $14.7$12.3 and $12.8$11.7 at January 1, 20162017 and September 30, 2016March 31, 2017 associated with a tax advantaged federal affordable housing development fund accounted for using the proportional amortization method.
(2)  Excludes carrying value of $211.3287.1 and $305.6$230.9 at January 1, 20162017 and September 30, 2016March 31, 2017 associated with short-term investments, of which $0.1 and $0.1 is classified as held for sale at January 1, 2016 and September 30, 2016.2017.
(3) Investments for which fair value is measured at net asset valueNAV using the practical expedient are no longer classified within the fair value hierarchy. (SeeSee Note 1 -— “Summary of Significant Accounting Policies”).
(4)  Includes carrying value of $9.5 and $8.3$6.6 of fixed maturity investments at January 1, 2016 and September 30, 20162017 that is classified as assets held for sale related to SSIE.


 Level 3 Investments   Level 3 Investments  
MillionsLevel 1 investments
Level 2 
investments
Fixed
maturity investments
Common
equity
securities
Other long-term
investments
Hedge Funds and Private Equity Funds measured at NAV(4)
Total Level 1 investments
Level 2 
investments
Fixed
maturity investments
Common
equity
securities
Other long-term
investments
Hedge Funds and Private Equity Funds measured at NAV(3)
Total 
Balance at January 1, 2015$550.6
$2,372.9
$76.4
$39.5
$126.9
$177.3
$3,343.6
(1)(2)(5) 
Total realized and
unrealized (losses) gains
(19.5).6
(.9)7.7
(13.5)(7.1)(32.7)
(3) 
Balance at January 1, 2016$1,152.2
$2,531.4
$70.0
$—
$169.5
$127.8
$4,050.9
(1)(2)(4) 
Total realized and
unrealized gains (losses)
11.3
19.1
.5
—
1.1
(2.4)29.6
 
Amortization/Accretion—
(15.2)—
—
—
—
(15.2) —
(4.2)—
—
—
—
(4.2) 
Purchases550.0
1,056.0
35.3
—
22.6
8.1
1,672.0
 109.0
292.4
—
—
2.1
8.9
412.4
 
Sales(618.2)(894.4)—
(9.4)(2.3)(16.6)(1,540.9) (852.9)(272.6)—
—
—
(3.0)(1,128.5) 
Effect of redemption of Prospector hedge funds(43.5)—
—
(3.6)—
(14.3)(61.4) 
Transfers in—
41.7
—
—
—
—
41.7
 —
—
—
—
—
—
—
 
Transfers out(1.2)—
(40.5)—
—
—
(41.7) —
—
—
—
—
—
—
 
Balance at
September 30, 2015		$418.2
$2,561.6
$70.3
$34.2
$133.7
$147.4
$3,365.4
(1)(2)(5) 
Balance at
March 31, 2016		$419.6
$2,566.1
$70.5
$—
$172.7
$131.3
$3,360.2
(1)(2)(4) 
(1) Excludes carrying value of $5.23.8 and $3.9$3.7 at January 1, 20152016 and September 30, 2015March 31, 2016 associated with other long-term investment limited partnerships accounted for using the equity method. Excludes carrying value of $16.8$14.7 and $15.2$14.1 at January 1, 20152016 and September 30, 2015March 31, 2016 associated with a tax advantaged federal affordable housing development fund accounted for using the proportional amortization method.
(2) Excludes carrying value of $376.8$211.3 million and $325.0$261.7 million at January 1, 20152016 and September 30, 2015March 31, 2016 associated with short-term investments of which $1.9$0.1 and $0.6$0.3 is classified as held for sale at January 1, 20152016 and September 30, 2015.March 31, 2016.
(3)Excludes $0.8 realized and unrealized losses associated with the Prospector Offshore Fund consolidation of investment-related liabilities.
(4) Investments for which fair value is measured at net asset valueNAV using the practical expedient are no longer classified within the fair value hierarchy. (SeeSee Note 1 -— “Summary of Significant Accounting Policies”).
(5)(4)  Includes carrying value of $10.1$9.5 and $9.7$9.4 of fixed maturity investments at January 1, 20152016 and September 30, 2015March 31, 2016 that is classified as assets held for sale related to SSIE.

Fair Value Measurements — transfers between levels - Nine-monthThree-month period ended September 30, 2016March 31, 2017 and 20152016
Transfers between levels are recorded using the fair value measurement as of the end of the quarterly period in which the event or change in circumstance giving rise to the transfer occurred.
During the first ninethree months of 20162017, and the first three months of 2016, there were twono fixed maturity investments classified as Level 3 measurements in the prior period that were transferred to Level 2 measurements because quoted market prices for similar securities that were considered reliable and could be validated against an alternative source were available at September 30, 2016. These measurements comprise “Transfers out” of Level 3 and “Transfers in” to Level 2 of $82.0 million for the period ended September 30, 2016.measurements.
During the first nine months of 2015, six fixed maturity investments classified as Level 3 measurement in the prior period was transferred to Level 2 measurement because quoted market prices for similar securities that were considered reliable and could be validated against an alternative source were available at September 30, 2015. These measurements comprise “Transfers out” of Level 3 and “Transfers in” to Level 2 of $40.5 million for the period ended September 30, 2015.


Significant Unobservable Inputs
The following summarizes significant unobservable inputs used in estimating the fair value of investment securities, other than hedge funds and private equity funds, classified within Level 3 as of September 30, 2016March 31, 2017 and December 31, 2015.2016. The fair value of investments in hedge funds and private equity funds are generally estimated using the net asset valueNAV of the funds.

Description September 30, 2016
$ in millions, except share price 
Rating(2)
 Valuation Technique(s) 
Fair 
Value(3)
 Unobservable Input
Preferred Stock(1)
 NR Discounted cash flow $71.6 Discount yield-6.25%
Non-agency residential mortgage-backed securities (1)
 AAA Broker pricing $36.0 Broker quote  
Private equity security(1)
 NR Share price of most recent transaction $21.0 Share price-$1.00
Private equity security(1)
 NR Share price of most recent transaction $33.8 Share price-$1.03
Private equity security(1)
 NR Share price of most recent transaction $3.2 Share price-$2.52
Convertible preferred security(1)
 NR Multiple of EBITDA $6.1 EBITDA multiple-6.00
Convertible preferred security(1)
 NR Share price of most recent transaction $27.0 Share price-$3.83
Private equity security(1)
 NR Option pricing method $9.9    
        Time until expiration-4 years
      Volatility/Standard deviation-60.0%
      Risk free rate-1.15%
Surplus notes: NR      
    - Seller priority   Discounted cash flow $49.0 
Discount rate(4)
-9.5%
      
Timing of interest payments(6)
-5 years
      
Timing of principal payments(6)
-10 years
    - Pari passu   Discounted cash flow $22.5 
Discount rate(5)
-15.8%
      
Timing of interest payments(6)
-5 years
      
Timing of principal payments(6)
-15 years

Description March 31, 2017
$ in millions, except share price 
Rating(6)
 Valuation Technique(s) 
Fair 
Value(1)
 Unobservable Input
Non-agency residential mortgage-backed securities AAA Broker pricing $58.3 Broker quote 102.56
Private equity security NR Share price of most recent transaction $21.0 Share price-$1.00
Private equity security NR Discounted cash flow $22.1 Discount rate-25.0%
Private equity security NR Share price of most recent transaction $3.4 Share price-$2.52
Private convertible preferred security NR Multiple of EBITDA $3.7 EBITDA multiple-6.00
Private convertible preferred security NR Share price of most recent transaction $27.0 Share price-$3.83
Community development tax incentive investment NR Member share of GAAP net equity $14.5 GAAP net equity $14.5
Private equity security NR Discounted cash flow/ Option pricing method $9.4 Discount rate-21.0%
        Time until expiration-4 years
      Volatility/Standard deviation-50.0%
      Risk free rate-1.00%
OneBeacon Surplus Notes: NR      
    - Seller priority   Discounted cash flow $48.1 
Discount rate (2)
-10.6%
      
Timing of interest payments (4)
-2020
      
Timing of principal payments (4)
-2030
    - Pari passu   Discounted cash flow $21.5 
Discount rate (3)
-15.0%
      
Timing of interest payments (5)
-2021
      
Timing of principal payments (5)
-2035
(1) As of September 30, 2016, each asset type consists of one security.Includes the net unrealized investment gains (losses) associated with foreign currency; foreign currency effects based on observable inputs.
(2)Stochastic modeling supporting the fair value estimation indicates that the average percentage of discounted payments missed on the seller priority note is roughly equivalent to that of a conventional debt security with a credit rating of ‘B’. The corresponding credit spread, increased to 400 bps as of March 31, 2017 from 250 bps as of December 31, 2016 to reflect an increase in the assumed liquidity spread for the seller priority note.
(3) Stochastic modeling supporting the fair value estimation indicates that the average percentage of discounted payments missed on the pari passu note is roughly equivalent to that of a conventional debt security with a credit rating of ‘CCC’. The corresponding credit spread, increased to 400 bps as of March 31, 2017 from 250 bps as of December 31, 2016 to reflect an increase in the assumed liquidity spread for the pari passu note.
(4) As of March 31, 2017, OneBeacon has assumed for the purpose of estimating fair value that all accrued but unpaid interest on the seller priority note since the date of issuance is paid in 2020, with regular annual interest payments beginning thereafter. Principal repayments are assumed to begin on a graduated basis in 2030.
(5) As of March 31, 2017, OneBeacon has assumed for the purpose of estimating fair value that regular annual interest payments on the pari passu note begin in 2021. All accrued but unpaid interest since the date of issuance is assumed to be paid in 2025. Principal repayments are assumed to begin on a graduated basis in 2035.
(6) Credit ratings are assigned based on the following hierarchy: 1) Standard and Poor's and 2) Moody’s.





Description December 31, 2016
$ in millions, except share price Valuation Technique(s) 
Fair Value (1)
 Unobservable Input
Private equity security Share price of most recent transaction $21.0 Share price-$1.00
Private equity security Discounted cash flow $22.1 Discount rate-25.0%
Private equity security Share price of most recent transaction $3.2 Share price-$2.52
Private convertible preferred security Multiple of EBITDA $3.6 EBITDA multiple-6.00
Private convertible preferred security Share price of most recent transaction $27.0 Share price-$3.83
Community development tax incentive investment Member share of GAAP net equity $14.3 GAAP net equity $14.3
Private equity security Discounted cash flow/ Option pricing method $9.3 Discount rate-21.0%
      Time until expiration-4 years
    Volatility/Standard deviation-50.0%
    Risk free rate-1.00%
OneBeacon Surplus Notes:      
    - Seller priority Discounted cash flow $51.1 
Discount rate (2)
-9.6%
    
Timing of interest payments (4)
-2020
    
Timing of principal payments (4)
-2030
    - Pari passu Discounted cash flow $20.8 
Discount rate (3)
-15.0%
    
Timing of interest payments (5)
-2021
    
Timing of principal payments (5)
-2035
(3)(1) Includes the net unrealized investment gains and losses(losses) associated with foreign currency; foreign currency effects based on observable inputs.
(4)(2) Stochastic modeling supporting the fair value estimation indicates that the average percentage of discounted payments missed on the seller priority note is roughly equivalent to that of a conventional debt security with a credit rating of ‘B’. The corresponding credit spread increased by an additional 250 bpsbasis points to reflect both a liquidity discount for a private debt instrument and regulatory payment approval uncertainty, was added to the treasury rate to determine the discount rate for the seller priority note.
(5)(3) Stochastic modeling supporting the fair value estimation indicates that the average percentage of discounted payments missed on the pari passu note is roughly equivalent to that of a conventional debt security with a credit rating of ‘CCC’. The corresponding credit spread increased by an additional 250 bpsbasis points to reflect both a liquidity discount for a private debt instrument and regulatory payment approval uncertainty, was added to the treasury rate to determine the discount rate for the seller prioritypari passu note.
(6)(4) As of December 31, 2016, OneBeacon has assumed for valuation purposesthe purpose of estimating fair value that subsequentall accrued but unpaid interest on the seller priority note since the date of issuance is paid in 2020, with regular annual interest payments will begin in year five (2020) and principalbeginning thereafter. Principal repayments are assumed to begin on a graduated basis in year ten (2025) for the seller priority note and year fifteen (2030) for the pari passu note.2030.





Description December 31, 2015
$ in millions, except share price 
Rating(2)
 Valuation Technique(s) 
Fair 
Value(3)
 Unobservable Input
Preferred Stock(1)(7)
 NR 
Par value(7)
 $70.0 Issuer’s intent to call-$70.0
Private equity security(1)
 NR Share price of most recent transaction $21.0 Share price-$1.00
Private equity security(1)
 NR Share price of most recent transaction $33.8 Share price-$1.03
Convertible preferred security(1)
 NR Multiple of EBITDA $5.7 EBITDA multiple-6.00
Convertible preferred security(1)
 NR Share price of most recent transaction $27.0 Share price-$3.83
Private equity security(1)
 NR Option pricing method $9.6    
        Time until expiration-4 years
      Volatility/Standard deviation-60.0%
      Risk free rate-1.15%
Surplus notes: NR      
    - Seller priority   Discounted cash flow $38.0 
Discount rate(4)
-13.0%
      
Timing of interest payments(6)
-5 years
      
Timing of principal payments(6)
-10 years
    - Pari passu   Discounted cash flow $13.5 
Discount rate(5)
-22.4%
      
Timing of interest payments(6)
-5 years
      
Timing of principal payments(6)
-15 years
(1)(5) As of December 31, 2015 each asset type consists2016, OneBeacon has assumed for the purpose of one security.
(2) Credit ratings are assigned based on the following hierarchy: 1) Standard and Poor's and 2) Moody’s.
(3) Includes the unrealized gains and losses associated with foreign currency; foreign currency effects based on observable inputs.
(4) Stochastic modeling supporting theestimating fair value estimation indicates that the average percentage of discountedregular annual interest payments missed on the seller priority note is roughly equivalent to that of a conventional debt security with a credit rating of ‘B’. The corresponding credit spread increased by an additional 250 bps to reflect both a liquidity discount for a private debt instrument and regulatory payment approval uncertainty, was added to the treasury rate to determine the discount rate for the seller priority note.
(5) Stochastic modeling supporting the fair value estimation indicates that the average percentage of discounted payments missed on the pari passu note is roughly equivalent to that of a conventional debt security with a credit rating of ‘CCC’. The corresponding credit spread increased by an additional 250 bps to reflect both a liquidity discount for a private debt instrument and regulatory payment approval uncertainty, was added to the treasury rate to determine the discount rate for the seller priority note.
(6) OneBeacon has assumed for valuation purposes that subsequent interest payments will begin in year five (2020) and principal2021. All accrued but unpaid interest since the date of issuance is assumed to be paid in 2025. Principal repayments are assumed to begin on a graduated basis in year ten (2025) for the seller priority note and year fifteen (2030) for the pari passu note.2035.
(7) Valuation based on the issuer’s intent as of December 31, 2015 to call the security in the near term.



Note 6. Goodwill and Other Intangible Assets

White Mountains has recognized goodwill and other intangible assets at the acquisition date fair values in connection with its purchases of subsidiaries.
On January 15, 2016, MediaAlpha acquired certain assets from Oversee.net for a purchase price of $3.9 million. The majority of assets acquired, which are included in other intangible assets, consists of customer relationships, a customer contract, a non-compete agreement from the seller, domain names and technology.
During 2015, Wobi acquired Cashboard in two transactions for a total of NIS 35.9 million (approximately $8.9 million based upon the foreign exchange spot rate at the dates of acquisition), representing a controlling financial interest. As of the acquisition date, Wobi recognized total assets acquired of $5.5 million, including $0.3 million of goodwill and $2.8 million of other intangible assets, and total liabilities assumed of $1.2 million at their estimated fair values.
On August 4, 2016, White Mountains acquired a 70.9% ownership share in Buzzmove for a purchase price of GBP 6.0 million (approximately $8.0 million based upon the foreign exchange spot rate at the date of acquisition). White Mountains recognized total assets acquired related to Buzzmove of $11.7 million, including $9.0 million of other intangible assets, total liabilities assumed of $0.1 million, and non-controlling interests of $2.6 million, reflecting acquisition date fair values.
The following table shows the change in goodwill and other intangible assets:
  Three Months Ended September 30,  
Millions 2016 2015
  Goodwill Other intangible assets Total Goodwill Other intangible assets Total
Beginning balance $24.1
 $29.2
 53.3
 $24.1
 $36.4
 $60.5
Amounts held for sale at beginning of the period (1)
 —
 —
 —
 —
 .6
 .6
Amortization, including foreign currency translation —
 (3.0) (3.0) —
 (2.6) (2.6)
Less: Amounts held for sale at end
         of the period (1)
 —
 —
 —
 —
 .5
 .5
Subtotal 24.1
 26.2
 50.3
 24.1
 33.9
 58.0
Acquisition of business     9.0
(2) 
    —
Ending balance     $59.3
     $58.0
  Nine Months Ended September 30,  
Millions 2016 2015
  Goodwill Other intangible assets Total Goodwill Other intangible assets Total
Beginning balance $24.1
 $31.3
 $55.4
 $23.8
 $38.7
 $62.5
Amounts held for sale at beginning of the period (1)
 —
 .4
 .4
 —
 .8
 .8
Acquisitions of businesses —
 —
 —
 .3
 2.8
 3.1
Acquisitions of other intangible assets —
 3.9
 3.9
 —
 —
 —
Amortization, including foreign currency translation —
 (9.4) (9.4) —
 (7.9) (7.9)
Less: Amounts held for sale at end
         of the period (1)
 —
 —
 —
 —
 .5
 .5
Subtotal 24.1
 26.2
 50.3
 24.1
 33.9
 58.0
Acquisition of business     9.0
(2) 
    —
Ending balance     $59.3
     $58.0
  Three Months Ended March 31,
Millions 2017 2016
  Goodwill Other intangible assets Total Goodwill Other intangible assets Total
Beginning balance $31.7
 $24.2
 $55.9
 $24.1
 $31.3
 $55.4
Add: Amounts held for sale at
         beginning of the period (1)
 —
 —
 —
 —
 .4
 .4
Acquisition of businesses —
 —
 —
 —
 3.9
 3.9
Amortization, including foreign
   currency translation
 —
 (2.9) (2.9) —
 (3.1) (3.1)
Less: Amounts held for sale at end
         of the period (1)
 —
 —
 —
 —
 .3
 .3
Ending balance $31.7
 $21.3
 $53.0
 $24.1
 $32.2
 $56.3
(1) See Note 17 -— “Held for Sale and Discontinued Operations”.
(2) The relative fair values of goodwill and of the other intangible assets recognized in connection with the acquisition of Buzzmove had not yet been determined at September 30, 2016.


Note 7.  Debt
 
White Mountains’s debt outstanding as of September 30, 2016March 31, 2017 and December 31, 20152016 consisted of the following:
Millions September 30,
2016		 
Effective
  Rate (1)
 December 31,
2015		 
Effective
  Rate (1)
 March 31,
2017		 
Effective
  Rate (1)
 December 31,
2016		 
Effective
  Rate (1)
WTM Bank Facility $—
 N/A $50.0
 3.9% $—
 N/A $—
 N/A
OBH Senior Notes, at face value 275.0
 4.7% 275.0
 4.7% 275.0
 4.7% 275.0
 4.7%
Unamortized original issue discount and debt issuance costs (1.9) (2.1)  (1.8) (1.8) 
OBH Senior Notes, carrying value 273.1
 272.9
  273.2
 273.2
 
OneBeacon Bank Facility —
 N/A —
 N/A —
 N/A —
 N/A
MediaAlpha Bank Facility 15.6
 5.8% 15.0
 5.5% 11.7
 6.1% 12.9
 5.7%
Unamortized issuance cost (.2) (.3)  (.2) (.2) 
MediaAlpha Bank Facility, carrying value 15.4
 14.7
  11.5
 12.7
 
Total debt $288.5
 $337.6
  $284.7
 $285.9
 
 (1) Effective rate considers the effect of the debt issuance costs.

WTM Bank Facility
On August 14, 2013, White Mountains entered into a revolving credit facility with a syndicate of lenders administered by Wells Fargo Bank, N.A., which has a total commitment of $425.0 million and has a maturity date of August 14, 2018 (the “WTM Bank Facility”). During the three months ended September 30, 2016, White Mountains borrowed and repaid $250.0 million under the WTM Bank Facility. During the nine months ended September 30, 2016, White Mountains borrowed $350.0 million and repaid $400.0 million under the WTM Bank Facility at a blended interest rate of 3.85%. As of September 30, 2016March 31, 2017, the WTM Bank Facility was undrawn.
The WTM Bank Facility contains various affirmative, negative and financial covenants which White Mountains considers to be customary for such borrowings, including certain minimum net worth and maximum debt to capitalization standards.

OBH Senior Notes
In November 2012, OneBeacon U.S. Holdings, Inc. (“OBH”) issued $275.0 million face value of senior unsecured notes (“OBH Senior Notes”) through a public offering, at an issue price of 99.9% and received $272.9 million of proceeds. The OBH Senior Notes bear an annual interest rate of 4.6% payable semi-annually in arrears on May 9 and November 9, until maturity on November 9, 2022, and are fully and unconditionally guaranteed as to the payment of principal and interest by OneBeacon Ltd. Taking into effect the amortization of the original issue discount and all underwriting and issuance expenses, the OBH Senior Notes have an effective yield to maturity of approximately 4.7% per annum.

The OBH Senior Notes were issued under indentures that contain restrictive covenants which, among other things, limit the ability of OneBeacon Ltd., OBH, and their respective subsidiaries to create liens and enter into sale and leaseback transactions and limits the ability of OneBeacon Ltd. and OBH to consolidate, merge or transfer its properties and assets. The indentures do not contain any financial ratios or specified levels of net worth or liquidity to which the OneBeacon Ltd. or OBH must adhere. In addition, a failure by OneBeacon Ltd. or OBH or their respective subsidiaries to pay principal and interest on covered debt, where such failure results in the acceleration of at least $75.0 million of the principal amount of covered debt, could trigger the acceleration of the OBH Senior Notes.

OneBeacon Bank Facility
On September 29, 2015, OneBeacon Ltd. and OneBeacon U.S. Holdings, Inc. (“OBH”), as co-borrowers and co-guarantors, entered into a revolving credit facility administered by U.S. Bank N.A. and also including BMO Harris Bank N.A., which has a total commitment of $65.0 million and has a maturity date of September 29, 2019 (the “OneBeacon Bank Facility”).  As of September 30, 2016,March 31, 2017, the OneBeacon Bank Facility was undrawn.
The OneBeacon Bank Facility contains various affirmative, negative and financial covenants which White Mountains considers to be customary for such borrowings, including certain minimum net worth and maximum debt to capitalization standards.


MediaAlpha Bank Facility
On July 23, 2015, MediaAlpha entered into a secured credit facility with Opus Bank, which has a total commitment of $20.0 million and has a maturity date of July 23, 2019 (the “MediaAlpha Bank Facility”).  The MediaAlpha Bank Facility consists of a $14.2$15.0 million term loan facility, which has an outstanding balance of $11.7 million as of March 31, 2017, and a revolving loan facility for $5.0 million, which had an outstanding balance of $1.5 millionis undrawn as of September 30, 2016.March 31, 2017. During the three months ended September 30, 2016,March 31, 2017, MediaAlpha repaid $0.8$1.2 million under the term loan facility and $0.5 million under the revolving loan facility. During the nine months ended September 30, 2016, MediaAlpha repaid $0.8 million under the term loan facility and borrowed $2.5 million and repaid $1.0 million under the revolving loan facility. The MediaAlpha Bank Facility carries a variable interest rate that is based on the Prime Rate, as published by the Wall Street Journal, plus a spread of 1.5% as of September 30, 2016.March 31, 2017.
The MediaAlpha Bank Facility is secured by intellectual property and the common stock of MediaAlpha’s subsidiaries, and contains various affirmative, negative and financial covenants that White Mountains considers to be customary for such borrowings, including a maximum leverage ratio. 

Compliance
At September 30, 2016March 31, 2017, White Mountains was in compliance with the covenants under all of its debt instruments.

Note 8.  Income Taxes
 
The Company and its Bermuda domiciled subsidiaries are not subject to Bermuda income tax under current Bermuda law. In the event there is a change in the current law such that taxes are imposed, the Company and its Bermuda domiciled subsidiaries would be exempt from such tax until March 31, 2035, pursuant to the Bermuda Exempted Undertakings Tax Protection Act of 1966. The Company has subsidiaries and branches that operate in various other jurisdictions around the world that are subject to tax in the jurisdictions in which they operate.  The jurisdictions in which the Company’s consolidated subsidiaries and branches are subject to tax are Barbados, Gibraltar, Ireland, Israel, Luxembourg, the Netherlands, the United Kingdom and the United States.
White Mountains’sMountains’ income tax expense related to pre-tax income from continuing operations for the three months ended March 31, 2017, represented a net effective tax rate of 10.3%. The effective tax rate for the three months ended September 30, 2016March 31, 2017 was (33.5)%. lower than the U.S. statutory rate of 35% due to income generated in jurisdictions other than the United States.
White Mountains’s income tax benefit related to pre-tax income from continuing operations for the three months ended September 30,March 31, 2016, represented a net effective tax rate of (114.1)%. As noted below, the effective tax rate for the three months ended March 31, 2016 was different fromimpacted by a $12.8 million tax benefit on the settlement of the 2007-2009 IRS exam. Without the tax benefit on the settlement of the 2007-2009 IRS exam there would have been tax expense, which would have resulted in a net effective tax rate that is approximately the same as the U.S. statutory rate of 35% due to changes in forecasted earnings by jurisdiction used in determining interim tax expense. The rate was also impacted by a $14.0 million tax benefit recognized in continuing operations related to the reversal of a valuation allowance that resulted from income that was recognized within discontinued operations. ASC 740 includes an exception to the general principle of intra-period tax allocations that requires a company with a current period loss from continuing operations to consider income recorded in other categories, including discontinued operations, in determining the tax benefit that is allocated to continuing operations. The valuation allowance reversal relates to a consolidated tax group within White Mountains that has a current period loss within continuing operations. Accordingly, the tax benefit resulting from the valuation allowance reversal was recorded in continuing operations with an offsetting tax expense for the same amount in discontinued operations.
White Mountains’s effective tax rate for the nine months ended September 30, 2016 was (84.9)%. White Mountains’s income tax benefit related to pre-tax income from continuing operations for the nine months ended September 30, 2016 was different from the U.S. statutory rate of 35% due to changes in forecasted earnings by jurisdiction used in determining interim tax expense. The rate was also impacted by a $3.5 million favorable settlement of the 2010-2012 IRS exam, by a $12.8 million favorable settlement of the 2007-2009 IRS exam and by a $14.0 million tax benefit recognized in continuing operations related to the reversal of a valuation allowance that resulted from income that was recognized within discontinued operations as described above. The tax benefit resulting from the valuation allowance reversal was recorded in continuing operations with an offsetting tax expense for the same amount in discontinued operations.
White Mountains’s income tax benefit from continuing operations for the first nine months of 2015 was near zero. The effective rates for the three and nine months ended September 30, 2015 represented an effective tax rate that was lower than the U.S. statutory rate of 35% due to income forecasted in jurisdictions with lower tax rates than the United States.
In arriving at the effective tax rate for the three and nine months ended September 30,March 31, 2017 and 2016, and 2015, White Mountains forecasted all income and expense items including the change in unrealized investment gains (losses) and realized investment gains (losses) for the years ending December 31, 20162017 and 2015.2016.

White Mountains records a valuation allowance against deferred tax assets if it becomes more likely than not that all or a portion of a deferred tax asset will not be realized. Changes in valuation allowances from period to period are included in income tax expense in the period of change. In determining whether or not a valuation allowance, or change therein, is warranted, White Mountains considers factors such as prior earnings history, expected future earnings, carryback and carryforward periods and strategies that if executed would result in the realization of a deferred tax asset.  It is possible that certain planning strategies or projected earnings in certain subsidiaries may not be feasible to utilize the entire deferred tax asset, which could result in material changes to White Mountains’s deferred tax assets and tax expense.
In the first and second quarters of 2016 White Mountains recorded tax benefits of $12.8 million and $3.5 million respectively related to the settlement of IRS audits of certain subsidiaries of OneBeacon for tax years 2007-2009 and 2010-2012.
In the second quarter of 2016 White Mountains recorded an increase in deferred tax assets of $0.6 million and a corresponding increase in valuation allowance of $0.6 million related to the settlement of the IRS audit of Guilford Holdings, Inc. and subsidiaries for tax year 2012.
With few exceptions, White Mountains is no longer subject to U.S. federal, state, or non-U.S. income tax examinations by tax authorities for years before 2012.

On January 19, 2016, White Mountains received Form 870-AD (Offer to Waive Restrictions on Assessment and Collection Tax Deficiency and to Accept Overassessment) from the IRS Appeals Office relating to the examination of tax years 2007, 2008 and 2009 for certain U.S. Subsidiaries of OneBeacon. All disputed items have now been agreed to and resolved with the Joint Committee on Taxation. As the receipt of the Form 870-AD described above represents formal settlement, White Mountains recorded a tax benefit of $12.8 million in the first quarter of 2016 related to tax years 2007, 2008 and 2009.
On May 27, 2016, White Mountains received the Closing Letter (Letter 1156) from the IRS Revenue Agent relating to the examination of tax years 2010, 2011 and 2012 for certain U.S. Subsidiaries of OneBeacon. All disputed items have now been agreed to and resolved. As the receipt of the Closing Letter described above represents formal settlement, White Mountains recorded a tax benefit of $3.5 million in the second quarter of 2016 related to tax years 2010, 2011 and 2012.
On June 22, 2016, White Mountains received the Closing Letter (Letter 1156) from the IRS Revenue Agent relating to the examination of tax year 2012 for Guilford Holdings, Inc. and subsidiaries. All disputed items have now been agreed to and resolved. As the receipt of the Closing Letter described above represents formal settlement, White Mountains recorded an increase to net operating loss carryforwards of $1.7 million related to tax year 2012.2013.

Note 9. Derivatives

Variable Annuity Reinsurance
White Mountains entered into agreements to reinsure death and living benefit guarantees associated with certain variable annuities in Japan. During the third quarter of 2015, the variable annuity contracts reinsured by WM Life Re began to mature and were fully runoff by June 30, 2016. At The reinsurance agreement was commuted in December 31, 2015, the total guarantee value was approximately ¥50.7 billion (approximately $0.4 billion at exchange rates on that date), respectively. The collective account values of the underlying variable annuities were approximately 109% of the guarantee value at December 31, 2015. 2016.
The following table summarizes the pre-tax operating results of WM Life Re for the three and nine months endedSeptember 30, 2016 and 2015.March 31, 2016.
 Three Months Ended Nine Months EndedThree Months Ended
 September 30, September 30,March 31,
Millions 2016 2015 2016 2015 2016
Fees, included in other revenue $—
 $2.1
 $1.2
 $7.7
 $1.0
Change in fair value of variable annuity liability,
included in other revenue
 —
 (2.8) (.3) (1.7) (.4)
Change in fair value of derivatives, included in other revenue —
 1.5
 (2.0) (6.3) (1.7)
Foreign exchange, included in other revenue —
 .4
 1.4
 (.8) .9
Other investment income and losses —
 (.2) —
 (.3) —
Total revenue —
 1.0
 .3
 (1.4) (.2)
Change in fair value of variable annuity death benefit liabilities,
included in other general and administrative expenses
 —
 —
 (.3) —
Death benefit claims paid, included in general and
administrative expenses
 —
 —
 —
 —
 (.1)
General and administrative expenses (.5) (.8) (2.4) (3.1) (.8)
Pre-tax income (loss) $(.5) $.2
 $(2.4) $(4.5)
Pre-tax loss $(1.1)
 
The following summarizes realized and unrealized derivative gains (losses) recognized in other revenue for the three and nine months endedSeptember 30, 2016 and 2015March 31, 2016 and the carrying values, included in other assets, as of December 31, 20152016 by type of instrument:
 Gains (losses)   Gains (losses) 
 Three Months Ended Nine Months Ended Carrying Value Three Months Ended Carrying Value
 September 30, September 30, As of March 31, As of
Millions 2016 2015 2016 2015 December 31, 2015 2016 December 31, 2016
Fixed income/interest rate $—
 $2.6
 $1.8
 $6.0
 $.5
 $1.8
 $—
Foreign exchange —
 (3.1) (4.8) (6.0) 14.8
 (4.2) —
Equity —
 2.0
 1.0
 (6.3) 4.8
 .7
 —
Total $—
 $1.5
 $(2.0) $(6.3) $20.1
 $(1.7) $—


The following tables summarize the changes in White Mountains’s variable annuity reinsurance liabilities and derivative instruments for the ninethree months ended September 30, 2016 and the three and nine months ended September 30, 2015.March 31, 2016.
  Nine Months Ended September 30, 2016
  
Variable Annuity
Assets (Liabilities)
 Derivative Instruments
Millions Level 3 
Level 3 (1)
 
Level 2 (1)(2)
 
Level 1 (3)
 Total
Beginning of period $.3
 $2.7
 $16.5
 $.9
 $20.1
Purchases —
 —
 —
 —
 —
Realized and unrealized gains (losses) (.3) 2.9
 (.7) (4.2) (2.0)
Transfers in —
 —
 —
 —
 —
Sales/settlements —
 (5.6) (15.8) 3.3
 (18.1)
End of period $—
 $—
 $—
 $—
 $—

  Three Months Ended September 30, 2015
  
Variable Annuity
Assets
 Derivative Instruments
Millions Level 3 
Level 3 (1)
 
Level 2 (1)(2)
 
Level 1 (3)
 Total
Beginning of period $1.8
 $8.3
 $32.5
 $(5.1) $35.7
Purchases —
 —
 —
 —
 —
Realized and unrealized gains (losses) (2.8) 3.4
 3.2
 (5.1) 1.5
Transfers in —
 —
 —
 —
 —
Sales/settlements —
 (.5) (7.8) 8.1
 (.2)
End of period $(1.0) $11.2
 $27.9
 $(2.1) $37.0

 Nine Months Ended September 30, 2015 Three Months Ended March 31, 2016
 
Variable Annuity
Assets
 Derivative Instruments 
Variable Annuity
Liabilities
 Derivative Instruments
Millions Level 3 
Level 3 (1)
 
Level 2 (1)(2)
 
Level 1 (3)
 Total Level 3 
Level 3 (1)
 
Level 2 (1)(2)
 
Level 1 (3)
 Total
Beginning of period $.7
 $18.9
 $33.8
 $3.7
 $56.4
 $.3
 $2.7
 $16.5
 $.9
 $20.1
Purchases —
 —
 —
 —
 —
 —
 —
 —
 —
 —
Realized and unrealized gains (losses) (1.7) (5.5) (2.7) 1.9
 (6.3)
Realized and unrealized (losses) gains (.4) 1.2
 1.1
 (4.0) (1.7)
Transfers in —
 —
 —
 —
 —
 —
 —
 —
 —
 —
Sales/settlements —
 (2.2) (3.2) (7.7) (13.1) —
 (1.3) (7.3) 3.3
 (5.3)
End of period $(1.0) $11.2
 $27.9
 $(2.1) $37.0
 $(.1) $2.6
 $10.3
 $.2
 $13.1
(1) Consists of over-the-counter instruments.
(2) Consists of interest rate swaps, total return swaps, foreign currency forward contracts, and bond forwards. Fair value measurement based upon bid/ask pricing quotes for similar instruments that are actively traded, where available.  Swaps for which an active market does not exist have been priced using observable inputs including the swap curve and the underlying bond index.
(3) Consists of exchange traded equity index, foreign currency and interest rate futures. Fair value measurements based upon quoted prices for identical instruments that are actively traded.

In addition to derivative instruments, WM Life Re held cash and fixed maturity investments posted as collateral to its variable annuity reinsurance counterparties.  The total collateral includes the following:
Millions December 31, 2015 September 30, 2015
Cash $5.8
 $16.8
Fixed maturity investments —
 —
Total $5.8
 $16.8
Collateral in the form of fixed maturity securities consisted of Government of Japan Bonds, recorded at fair value. Collateral in the form of short-term investments consisted of money-market instruments, carried at amortized cost, which approximated fair value. 

All of White Mountains’s variable annuity reinsurance liabilities were classified as Level 3 measurements. The fair value of White Mountains’s variable annuity reinsurance liabilities were estimated using actuarial and capital market assumptions related to the projected discounted cash flows over the term of the reinsurance agreement. Actuarial assumptions regarding future policyholder behavior, including surrender and lapse rates, were generally unobservable inputs and significantly impacted the fair value estimates. Generally, the liabilities associated with these guarantees increased with declines in the equity markets, interest rates and currencies against the Japanese yen, as well as with increases in market volatilities. White Mountains used derivative instruments to mitigate the risks associated with changes in the fair value of the reinsured variable annuity guarantees. The types of inputs used to estimate the fair value of these derivative instruments, with the exception of actuarial assumptions regarding policyholder behavior and risk margins, were generally the same as those used to estimate the fair value of variable annuity liabilities. There were no open derivatives instruments remaining as of September 30, 2016.
WM Life Re entered into both over-the-counter (“OTC”) and exchange traded derivative instruments to economically hedge the liability from the variable annuity benefit guarantee.  In the case of OTC derivatives, WM Life Re had exposure to credit risk for amounts that were uncollateralized by counterparties. WM Life Re’s internal risk management guidelines established net counterparty exposure thresholds that took into account OTC counterparties’ credit ratings. The OTC derivative contracts were subject to restrictions on liquidation of the instruments and distribution of proceeds under collateral agreements. 
In the case of exchange traded instruments, WM Life Re had exposure to credit risk for amounts uncollateralized by margin balances. WM Life Re had master netting agreements with certain of its counterparties whereby the collateral provided (held) was calculated on a net basis. The following summarizes amounts offset under master netting agreements:
 December 31, 2015 March 31, 2016
Millions 
Gross asset amounts before offsets (1)
 Gross liability amounts offset under master netting arrangements Net amounts recognized in Other Assets 
Gross asset amounts before offsets (1)
 Gross liability amounts offset under master netting arrangements Net amounts recognized in Other Assets
Interest rate contracts            
OTC $2.4
 $(2.1) $.3
 $2.2
 $(2.5) $(.3)
Exchange traded .1
 (.1) —
Foreign exchange contracts            
OTC 15.0
 —
 15.0
 12.7
 —
 12.7
Exchange traded .1
 (.3) (.2) —
 (.1) (.1)
Equity contracts            
OTC 4.4
 (.6) 3.8
 1.5
 (.9) .6
Exchange traded 1.2
 —
 1.2
 .3
 (.1) .2
Total(2)
 $23.2
 $(3.1) $20.1
 $16.7
 $(3.6) $13.1
(1) Amount equal to fair value of instrument as recognized in other assets
(2) All derivative instruments held by WM Life Re were subject to master netting arrangements.

There were no open derivativederivatives instruments as of September 30, 2016 and no exposure to credit losses on OTC and exchanged traded derivatives as of that date. subsequent to June 30, 2016.

The following summarizes the value, collateral held or provided by WM Life Re and net exposure to credit losses on OTC and exchange traded derivative instruments by counterparty recorded within other assets as of DecemberMarch 31, 2015:2016:
 December 31, 2015  March 31, 2016 
Millions Net amount of assets reflected in Balance Sheet Collateral provided to counter-party - Cash Collateral provided to counter-party - Financial Instruments Net amount of exposure after effect of collateral provided Excess collateral provided to counter-party- Cash Excess collateral provided - Financial Instruments Counter-party collateral held by WM Life Re- Cash Net amount of exposure to counter-party 
Standard
& Poor's
Rating(1)
 Net amount of assets reflected in Balance Sheet Collateral provided to counter-party - Cash Collateral provided to counter-party - Financial Instruments Net amount of exposure after effect of collateral provided Excess collateral provided to counter-party- Cash Excess collateral provided - Financial Instruments Counter-party collateral held by WM Life Re- Cash Net amount of exposure to counter-party 
Standard
& Poor's
Rating(1)
JP Morgan $8.5
 $—
 $—
 $8.5
 $—
 $—
 $5.5
 $3.0
 A+ $6.5
 $—
 $—
 $6.5
 $—
 $—
 $5.4
 $1.1
 A+
Bank of America .7
 —
 —
 .7
 —
 —
 —
 .7
 A
 1.4
 —
 —
 1.4
 —
 —
 —
 1.4
 A
Citigroup - OTC 9.9
 —
 —
 9.9
 —
 —
 1.4
 8.5
 A  5.0
 —
 —
 5.0
 —
 —
 .5
 4.5
 A 
Citigroup -
Exchange Traded
 1.0
 —
 —
 1.0
 5.8
 —
 —
 6.8
 A  .2
 —
 —
 .2
 7.9
 —
 —
 8.1
 A 
Total $20.1
 $—
 $—
 $20.1
 $5.8
 $—
 $6.9
 $19.0
  $13.1
 $—
 $—
 $13.1
 $7.9
 $—
 $5.9
 $15.1
 
(1) Standard & Poor’s ratings as detailed above are: “A+” (Strong, which is the fifth highest of twenty-three creditworthiness ratings), “A” (Strong, which is the sixth highest of twenty-three creditworthiness ratings), “A-” (Strong, which is the seventh highest of twenty-three creditworthiness ratings) and
“BBB+” (Adequate, which is the eighth highest of twenty-three creditworthiness ratings).

Forward Contracts
White Mountains investment portfolio contains investment grade fixed maturity investments denominated in British Pound Sterling (GBP) and common equity securities denominated in Euro (EUR). White Mountains entered into foreign currency forward contracts to manage its GBP and EUR foreign currency exposure. The contracts do not meet the criteria to be accounted for as a hedge. White Mountains monitors its exposure to foreign currency and adjusts its foreign currency positions within the risk guidelines and ranges established by senior management. While White Mountains actively manages its foreign currency positions, mismatches between movements in foreign currency rates and its foreign currency forward contract may result in foreign currency positions being outside pre-defined ranges and/or foreign currency losses. At March 31, 2017, White Mountains held $299.9 million (GBP 200.0 million and EUR 50.0 million) total gross notional value of foreign currency forward contracts.
White Mountains’s foreign currency forward contracts are traded over-the-counter. The fair value of the contracts have been estimated using OTC quotes for similar instruments and accordingly, the measurements have been classified as Level 2 measurements at March 31, 2017.
The net realized and unrealized derivative loss recognized in net realized and unrealized investment gains (losses) for the period ended March 31, 2017 was $3.0 million. White Mountains’s forward contracts are subject to master netting agreements. As of March 31, 2017 and December 31, 2016, the gross liability amount offset under the master netting agreement and the net amount recognized in other long-term investments was $(4.2) million and $(1.2) million.
White Mountains does not hold or provide any collateral under its forward contracts.  The following table summarizes the notional amount and the uncollateralized balance associated with the forward currency contracts:
  March 31, 2017
Millions Notional Amount Carrying Value 
Standard & Poor's
 Rating (1)
Barclays Bank PLC $247.2
 $(3.2) A-
JP Morgan 52.7
 (1.0) A-
Total $299.9
 $(4.2)  
(1) Standard & Poor’s ratings “A-” (Strong, which is the ninth highest of twenty-one creditworthiness ratings).


Note 10. Municipal Bond Guarantee Insurance

In 2012, HG Global was capitalized with $594.5 million from White Mountains and $14.5 million from non-controlling interests to fund BAM, a newly formed mutual municipal bond insurer. As of September 30, 2016March 31, 2017, White Mountains owned 96.9% of HG Global’s preferred equity and 88.4% of its common equity. HG Global, together with its subsidiaries, provided the initial capitalization of BAM through the purchase of $503.0 million of BAM Surplus Notes. Through HG Re, which had statutory capital and surplus of $476.5467.4 million at September 30,December 31, 2016,, HG Global provides first loss reinsurance protection for policies underwritten by BAM of up to 15% of par outstanding, on a per policy basis. HG Re’s obligations to BAM are collateralized in trusts, and there is an aggregate loss limit that is equal to the total assets in the collateral trusts at any point in time.
For the three and nine months endedSeptember 30, 2016March 31, 2017, HG Global had pre-tax income of $5.2$6.6 million, and $18.4 million, which included $4.5 million and $13.4$4.8 million of interest income on the BAM Surplus Notes. For the three and nine months ended September 30, 2015,March 31, 2016, HG Global had pre-tax income of $5.2 million and $13.8$7.3 million, which included $4.0 million and $11.9$4.5 million of interest income on the BAM Surplus Notes.
For the three and nine months endedSeptember 30, 2016March 31, 2017, White Mountains reported pre-tax losses of $13.7 million and $30.312.2 million on BAM that were recorded in net loss attributable to non-controlling interests, which included $4.5 million and $13.44.8 million of interest expense on the BAM Surplus Notes. For the three and nine months ended September 30, 2015, March 31, 2016, White Mountains reported pre-tax losses of $10.6 million and $33.5$7.6 million on BAM that were recorded in net loss attributable to non-controlling interests, which included $4.0 million and $11.9$4.5 million of interest expense on the BAM Surplus Notes.
Effective January 1, 2014, HG Global and BAM agreed to change the interest rate on the BAM Surplus Notes for the five years ending December 31, 2018 from a fixed rate of 8% to a variable rate equal to the one-year U.S. treasury rate plus 300 basis points, set annually, which is 3.54% and 3.15%3.78% for 2016 and 2015.2017. Prior to the end of 2018, BAM has the option to extend the variable rate period for an additional three years.  At the end of the variable rate period, the interest rate will be fixed at the higher of the then current variable rate or 8%. BAM is required to seek regulatory approval to pay interest and principal on its surplus notes only when adequate capital resources have accumulated beyond BAM’s initial capitalization and a level that continues to support its outstanding obligations, business plan and ratings.
All of the contracts issued by BAM are accounted for as insurance contracts under ASC 944-605, Financial Guarantee Insurance Contracts. Premiums are received upfront and an unearned premium revenue liability, equal to the amount of the cash received, is established at contract inception. Premium revenues are recognized in revenue over the period of the contracts in proportion to the amount of insurance protection provided using a constant rate. The constant rate is calculated based on the relationship between the par outstanding in a given reporting period compared with the sum of each of the par amounts outstanding for all periods.
The following table provides a schedule of BAM’s insured obligations:
 September 30, 2016 December 31, 2015 March 31, 2017 December 31, 2016
Contracts outstanding 4,357
 3,103
 5,191
 4,807
Remaining weighted average contract period outstanding (in years) 10.9
 12.8
 10.8
 10.8
Contractual debt service outstanding (in millions):        
Principal $30,470.0
 $22,556.0
 $35,222.1
 $33,057.3
Interest 15,258.1
 11,984.4
 17,589.9
 16,396.6
Total debt service outstanding $45,728.1
 $34,540.4
 $52,812.0
 $49,453.9
        
Gross unearned insurance premiums $71.0
 $50.2
 $99.8
 $83.0

The following table is a schedule of BAM’s future premium revenues as of September 30, 2016:March 31, 2017:
Millions September 30, 2016
October 1, 2016 - December 31, 2016 $1.6
   
January 1, 2017 - March 31, 2017 1.6
April 1, 2017 - June 30, 2017 1.6
July 1, 2017 - September 30, 2017 1.6
October 1, 2017 - December 31, 2017 1.5
  6.3
   
2018 6.0
2019 5.7
2020 5.4
2021 and thereafter 46.0
Total $71.0
Millions March 31, 2017
April 1, 2017 - December 31, 2017 $6.3
   
January 1, 2018 - March 31, 2018 2.1
April 1, 2018 - June 30, 2018 2.0
July 1, 2018 - September 30, 2018 2.0
October 1, 2018 - December 31, 2018 2.0
  8.1
   
2019 7.8
2020 7.4
2021 7.0
2022 and thereafter 63.2
Total gross unearned insurance premiums $99.8

Note 11. Earnings Per Share
 
Basic earnings per share amounts are based on the weighted average number of common shares outstanding including unvested restricted shares that are considered participating securities. Diluted earnings per share amounts are based on the weighted average number of common shares including unvested restricted shares and the net effect of potentially dilutive common shares outstanding. The following table outlines the Company’s computation of earnings per share from continuing operations for the three and nine months endedSeptember 30, 2016March 31, 2017 and 20152016. (SeeSee Note 17 -— “Held for Sale and Discontinued Operations”).
 Three Months Ended Nine Months Ended Three Months Ended
 September 30, September 30, March 31,
 2016 2015 2016 2015 2017 2016
Basic and diluted earnings per share numerators (in millions):      
  
    
Net income (loss) from continuing operations attributable to
White Mountains’s common shareholders
 $29.8
 $(65.4) $24.2
 $(47.6) $35.3
 $11.9
Allocation of income for unvested restricted common shares (.4) —
 (.3) —
 (.4) (.1)
Dividends declared on participating restricted common shares(1)
 —
 —
 (.1) (.1) (.1) (.1)
Total allocation to restricted common shares (.4) —
 (.4) (.1) (.5) (.2)
Net income (loss) attributable to White Mountains’s common shareholders,
net of restricted common share amounts
 $29.4
 $(65.4) $23.8
 $(47.7) $34.8
 $11.7
Undistributed net earnings (in millions):            
Net income (loss) attributable to White Mountains’s common shareholders,
net of restricted common share amounts
 $29.4
 $(65.4) $23.8
 $(47.7) $34.8
 $11.7
Dividends declared net of restricted common share amounts(1)
 —
 —
 (5.4) (5.9) (4.5) (5.9)
Total undistributed net earnings, net of restricted common share amounts $29.4
 $(65.4) $18.4
 $(53.6) $30.3
 $5.8
Basic earnings per share denominators (in thousands):            
Total average common shares outstanding during the period 4,867.4
 5,890.1
 5,166.6
 5,951.1
 4,564.6
 5,539.6
Average unvested restricted shares(2)
 (68.1) —
 (62.9) —
 (52.5) (54.0)
Basic earnings per share denominator 4,799.3
 5,890.1
 5,103.7
 5,951.1
 4,512.1
 5,485.6
Diluted earnings per share denominator (in thousands):            
Total average common shares outstanding during the period(3)
 4,879.4
 5,890.1
 5,174.8
 5,951.1
 4,564.6
 5,540.5
Average unvested restricted common shares(2)
 (68.1) —
 (62.9) —
 (52.5) (54.0)
Diluted earnings per share denominator(3)
 4,811.3
 5,890.1
 5,111.9
 5,951.1
 4,512.1
 5,486.5
Basic earnings per share (in dollars):            
Net income (loss) attributable to White Mountains’s common shareholders $6.12
 $(11.10) $4.67
 $(8.01) $7.72
 $2.14
Dividends declared and paid —
 —
 (1.00) (1.00) (1.00) (1.00)
Undistributed earnings $6.12
 $(11.10) $3.67
 $(9.01) $6.72
 $1.14
Diluted earnings per share (in dollars):            
Net income (loss) attributable to White Mountains’s common shareholders $6.11
 $(11.10) $4.66
 $(8.01) $7.72
 $2.14
Dividends declared and paid —
 —
 (1.00) (1.00) (1.00) (1.00)
Undistributed earnings $6.11
 $(11.10) $3.66
 $(9.01) $6.72
 $1.14
(1) Restricted shares issued by White Mountains receive dividends, and therefore, are considered participating securities.
(2) Restricted shares outstanding vest either in equal annual installments or upon a stated date. (SeeSee Note 15 -— “Employee Share-Based Compensation Plans”).
(3) The diluted earnings per share denominator for the three and nine months ended September 30,March 31, 2016 includes the impact of 120,000125,000 common shares issuable upon exercise of the non-qualified options outstanding, which resultsresulted in 11,943 and 8,208882 incremental shares outstanding over the periods.period. The incremental shares had an effect on diluted earning per share of less than $0.01.



Note 12. Non-controlling Interests

The following table details the balance of non-controlling interests included in White Mountains’s total equity and the related percentage of each consolidated entity’s total equity owned by non-controlling shareholders as of September 30, 2016March 31, 2017 and December 31, 2015:2016:
 September 30, 2016 December 31, 2015 March 31, 2017 December 31, 2016
$ in millions Non-controlling Percentage Non-controlling Equity Non-controlling Percentage Non-controlling Equity Non-controlling Percentage Non-controlling Equity Non-controlling Percentage Non-controlling Equity
OneBeacon Ltd. 23.9% $247.0
 24.5% $245.6
 24.3% $250.7
 23.9% $244.6
SIG Preference Shares —
 —
 100.0
 250.0
 

 

 

 

Other, excluding mutuals and reciprocals                
HG Global 3.1
 16.9
 3.1
 17.1
 3.1
 16.5
 3.1
 16.6
MediaAlpha 40.0
 12.5
 40.0
 14.4
 40.0
 11.0
 40.0
 11.7
Tranzact —
 —
 36.8
 79.4
Wobi 3.3
 .5
 3.9
 .6
 5.0
 1.0
 5.0
 .7
Dewar 18.8
 3.7
 19.0
 3.7
 18.8
 3.4
 18.8
 3.9
Buzzmove 29.1
 3.3
 —
 —
 29.1
 2.8
 29.1
 2.9
Total other, excluding mutuals and reciprocals   36.9
   115.2
   34.7
   35.8
Mutuals and reciprocals                
BAM 100.0
 (138.9) 100.0
 (140.0) 100.0
 (153.0) 100.0
 (150.9)
SSIE 100.0
 4.2
 100.0
 (16.0) —
 —
 100.0
 4.4
Total mutuals and reciprocals   (134.7)   (156.0)   (153.0)   (146.5)
Total non-controlling interests 

 $149.2
   $454.8
 

 $132.4
   $133.9
    

Note 13. Segment Information
 
White Mountains has determined that its reportable segments are OneBeacon, HG Global/BAM and Other Operations. As a result of the Sirius Group and Tranzact sales, the results of operations for Sirius Group, previously reported in its own segment, and Tranzact, previously reported in the Other Operations segment, have been classified as discontinued operations and are now presented, net of related income taxes, as such in the statement of operations and comprehensive income. Prior year amounts have been reclassified to conform to the current period’s presentation (Seepresentation. See Note 17 -— “Held for Sale and Discontinued Operations”).
White Mountains has made its segment determination based on consideration of the following criteria: (i) the nature of the business activities of each of the Company’s subsidiaries and affiliates; (ii) the manner in which the Company’s subsidiaries and affiliates are organized; (iii) the existence of primary managers responsible for specific subsidiaries and affiliates; and (iv) the organization of information provided to the chief operating decision makers and the Board of Directors.
Significant intercompany transactions among White Mountains’s segments have been eliminated herein. Financial information for White Mountains’s segments follows:
    HG Global/BAM    
Millions OneBeacon HG 
BAM(1)
 Other Operations Total
Three Months Ended September 30, 2016  
      
  
Earned insurance premiums $277.9
 $1.2
 $.3
 $1.9
 $281.3
Net investment income 11.8
 .6
 1.7
 8.4
 22.5
Net investment income (loss) - surplus note interest —
 4.5
 (4.5) —
 —
Net realized and unrealized investment gains (losses) 15.5
 (.3) (1.6) 12.8
 26.4
Other revenue 1.8
 —
 .4
 32.6
(2) 
34.8
Total revenues 307.0
 6.0
 (3.7) 55.7
 365.0
Losses and LAE 162.8
 —
 —
 2.2
 165.0
Insurance acquisition expenses 55.1
 .2
 .6
 .5
 56.4
Other underwriting expenses 49.4
 —
 .1
 .1
 49.6
General and administrative expenses 3.2
 .6
 9.3
 54.1
(3) 
67.2
Amortization of other intangible assets .3
 —
 —
 2.7
 3.0
Interest expense 3.3
 —
 —
 .5
 3.8
Total expenses 274.1
 .8
 10.0
 60.1
 345.0
Pre-tax income (loss) $32.9
 $5.2
 $(13.7) $(4.4) $20.0
   HG Global/BAM       HG Global/BAM    
Millions OneBeacon HG 
BAM(1)
 Other Operations Total OneBeacon HG 
BAM(1)
 Other Operations Total
Nine Months Ended September 30, 2016  
      
  
Three Months Ended March 31, 2017  
      
  
Earned insurance premiums $827.9
 $3.1
 $1.0
 $6.1
 $838.1
 $261.8
 $1.5
 $.5
 $1.0
 $264.8
Net investment income 38.3
 1.6
 5.1
 14.6
 59.6
 12.2
 .6
 2.0
 11.3
 26.1
Net investment income (loss) - surplus note interest —
 13.4
 (13.4) —
 —
 —
 4.8
 (4.8) —
 —
Net realized and unrealized investment gains 56.8
 2.3
 6.5
 18.4
 84.0
 15.0
 .3
 1.0
 35.0
 51.3
Other revenue 3.5
 —
 .8
 106.5
(2) 
110.8
 3.4
 —
 .4
 39.9
(2) 
43.7
Total revenues 926.5
 20.4
 —
 145.6
 1,092.5
 292.4
 7.2
 (.9) 87.2
 385.9
Losses and LAE 501.3
 —
 —
 6.8
 508.1
 150.6
 —
 —
 1.1
 151.7
Insurance acquisition expenses 154.8
 .6
 1.9
 1.9
 159.2
 45.3
 .3
 .9
 .1
 46.6
Other underwriting expenses 155.6
 —
 .3
 .1
 156.0
 51.7
 —
 .1
 —
 51.8
General and administrative expenses 10.0
 1.4
 28.1
 181.5
(3) 
221.0
 4.7
 .3
 10.3
 76.0
(3) 
91.3
Amortization of other intangible assets .9
 —
 —
 8.5
 9.4
 .3
 —
 —
 2.6
 2.9
Interest expense 9.8
 —
 —
 2.6
 12.4
 3.3
 —
 —
 .4
 3.7
Total expenses 832.4
 2.0
 30.3
 201.4
 1,066.1
 255.9
 .6
 11.3
 80.2
 348.0
Pre-tax income (loss) $94.1
 $18.4
 $(30.3) $(55.8) $26.4
 $36.5
 $6.6
 $(12.2) $7.0
 $37.9


    HG Global/BAM    
Millions OneBeacon HG 
BAM(1)
 Other Operations Total
Three Months Ended September 30, 2015  
      
  
Earned insurance premiums $281.4
 $.6
 $.3
 $2.6
 $284.9
Net investment income 12.4
 .5
 1.1
 2.8
 16.8
Net investment income (loss) - surplus note interest —
 4.0
 (4.0) —
 —
Net realized and unrealized investment (losses) gains (29.9) .6
 1.7
 (16.3) (43.9)
Other revenue 3.9
 —
 .2
 34.2
(2) 
38.3
Total revenues 267.8
 5.7
 (.7) 23.3
 296.1
Losses and LAE 167.5
 —
 —
 2.5
 170.0
Insurance acquisition expenses 53.8
 .1
 .4
 1.0
 55.3
Other underwriting expenses 56.4
 —
 .1
 —
 56.5
General and administrative expenses 3.4
 .4
 9.4
 81.5
(3) 
94.7
Amortization of other intangible assets .3
 —
 —
 2.3
 2.6
Interest expense 3.2
 —
 —
 .7
 3.9
Total expenses 284.6
 .5
 9.9
 88.0
 383.0
Pre-tax (loss) income $(16.8) $5.2
 $(10.6) $(64.7) $(86.9)
   HG Global/BAM       HG Global/BAM    
Millions OneBeacon HG 
BAM(1)
 Other Operations Total OneBeacon HG 
BAM(1)
 Other Operations Total
Nine Months Ended September 30, 2015  
      
  
Three Months Ended March 31, 2016  
      
  
Earned insurance premiums $887.3
 $1.7
 $.6
 $6.4
 $896.0
 $278.6
 $.9
 $.3
 $2.3
 $282.1
Net investment income 33.0
 1.4
 2.9
 5.3
 42.6
 14.4
 .5
 1.6
 1.4
 17.9
Net investment income (loss) - surplus note interest —
 11.9
 (11.9) —
 —
 —
 4.5
 (4.5) —
 —
Net realized and unrealized investment (losses) gains (29.7) .3
 2.8
 (7.3) (33.9)
Other (loss) revenue (.4) —
 .5
 114.3
(2) 
114.4
Net realized and unrealized investment gains 16.6
 2.1
 4.9
 5.9
 29.5
Other revenue .9
 —
 .1
 38.8
(2) 
39.8
Total revenues 890.2
 15.3
 (5.1) 118.7
 1,019.1
 310.5
 8.0
 2.4
 48.4
 369.3
Losses and LAE 527.9
 —
 —
 6.2
 534.1
 158.8
 —
 —
 2.3
 161.1
Insurance acquisition expenses 161.2
 .3
 1.8
 2.8
 166.1
 51.0
 .2
 .7
 .8
 52.7
Other underwriting expenses 165.2
 —
 .3
 —
 165.5
 55.3
 —
 .1
 —
 55.4
General and administrative expenses 11.0
 1.2
 26.3
 185.2
(3) 
223.7
 3.6
 .5
 9.2
 70.7
(3) 
84.0
Amortization of other intangible assets 1.0
 —
 —
 6.9
 7.9
 .3
 —
 —
 2.8
 3.1
Interest expense 9.7
 —
 —
 1.1
 10.8
 3.3
 —
 —
 1.2
 4.5
Total expenses 876.0
 1.5
 28.4
 202.2
 1,108.1
 272.3
 .7
 10.0
 77.8
 360.8
Pre-tax income (loss) $14.2
 $13.8
 $(33.5) $(83.5) $(89.0) $38.2
 $7.3
 $(7.6) $(29.4) $8.5
(1) BAM manages its affairs on a statutory accounting basis. BAM’s statutory surplus includes surplus notes and is not reduced by accruals of interest expense on the surplus notes. BAM’s statutory surplus is reduced only after a payment of principal or interest has been approved by the New York Department of Financial Services.
(2) Includes $27.6 and $88.4$32.5 from MediaAlpha for the three months ended March 31, 2017, and nine months ended September 30, 2016, and $28.3 and $81.2$32.7 from MediaAlpha for the three months and nine months ended September 30, 2015.March 31, 2016.
(3) Includes $26.2 and $82.7$30.9 from MediaAlpha for the three months ended March 31, 2017, and nine months ended September 30, 2016, and $26.2 and $75.8$30.5 from MediaAlpha for the three months and nine months ended September 30, 2015.March 31, 2016.


Note 14. Investments in Unconsolidated Affiliates
 
White Mountains’s investments in unconsolidated affiliates represent investments in other companies in which White Mountains has a significant voting and economic interest but does not control the entity.

Symetra
In August 2015, Symetra announced it had entered into a definitive merger agreement with Sumitomo Life Insurance Company (“Sumitomo Life”) pursuant to which Sumitomo Life would acquire all of the outstanding shares of Symetra. Following the announcement and Symetra shareholders’ November 5, 2015 meeting to approve the transaction, White Mountains relinquished its representation on Symetra’s board of directors. As a result, White Mountains changed its accounting for Symetra common shares from the equity method to fair value as of December 31, 2015. During the fourth quarter of 2015, White Mountains recognized $258.8 million ($241.1 million after tax) of unrealized investment gains through net income, representing the difference between the carrying value of Symetra common shares under the equity method at the date of change and fair value at December 31, 2015. White Mountains also received a special dividend of $0.50 per share as part of the transaction that was paid in the third quarter of 2015. On February 1, 2016, Symetra closed its definitive merger agreement with Sumitomo Life and White Mountains received proceeds of $658.0 million, or $32.00 per common share. White Mountains recognized $4.7 million in pre-tax net investment gains associated with Symetra in the first quarter of 2016.
During the three and nine months ended September 30, 2015, White Mountains received cash dividends from Symetra of $12.5 million and $16.9 million, which included a special dividend of $10.3 million. The dividends were recorded as a reduction of White Mountains’s investment in Symetra in accordance with equity method accounting.
As of December 31, 2011, White Mountains concluded that its investment in Symetra common shares was other-than-temporarily impaired and wrote down the GAAP book value of the investment to its estimated fair value of or $15 per share.  This impairment, as well as the effect of Symetra capital transactions, resulted in a basis difference between the GAAP carrying value of White Mountains’s investment in Symetra common shares under the equity method and the amount derived by multiplying the percentage of White Mountains common share ownership by Symetra’s total GAAP equity. As of September 30, 2015, the pre-tax unamortized basis difference was $160.8 million, of which $32.6 million is attributable to equity in earnings of unconsolidated affiliates and $128.2 million is attributable to equity in net unrealized gains of unconsolidated affiliates. The pre-tax basis difference was amortized over a 30-year period, based on estimated future cash flows associated with Symetra’s underlying assets and liabilities to which the basis differences was attributed. White Mountains recognized the amortization of the basis difference through equity in earnings of unconsolidated affiliates and equity in net unrealized gains (losses) from investments in unconsolidated affiliates consistent with the original attribution of the basis differences between equity in earnings and equity in net unrealized gains (losses). For the three and nine months ended September 30, 2015, White Mountains recognized after-tax amortization of $0.6 million and $2.0 million and through equity in earnings of unconsolidated affiliates and $2.6 million and $8.1 million through equity in net unrealized gains from investments in unconsolidated affiliates.
The following table summarizes amounts recorded by White Mountains under the equity method relating to its investment in Symetra for the three and nine months ended September 30, 2015:
  Three Months Ended Nine Months Ended
Millions September 30, 2015 September 30, 2015
Equity method carrying value of investment in Symetra at the beginning of the period $397.2
 $411.4
Equity in earnings (1)(2)
 4.2
 17.5
 Equity in net unrealized gains (losses) from Symetra’s fixed maturity portfolio (3)
 3.7
 (31.8)
Dividends received (12.5) (16.9)
 Distribution from Prospector Offshore Fund —
 12.4
Equity method carrying value of investment in Symetra at the end of the period(4)
 $392.6
 $392.6
(1) For the three and nine months ended September 30, 2015, equity in earnings excludes tax expense of $0.3 and $1.1.
(2) For the three and nine months ended September 30, 2015, equity in earnings includes $0.7 and $2.1 increase relating to the pre-tax amortization of the Symetra common share basis difference.
(3) For the three and nine months ended September 30, 2015, net unrealized gains includes $2.9 and $8.6 increase relating to the pre-tax amortization of the Symetra common share basis difference.
(4) Includes White Mountains’s equity in net unrealized gains from Symetra’s fixed maturity portfolio of $5.7 as of September 30, 2015, which excludes tax expense of $0.2.

Hamer
On May 27, 2015, White Mountains sold its interest in Hamer LLC, which resulted in a gain of $20.0 million recorded in other revenue. Prior to the sale, White Mountains recorded equity in earnings of $1.1 million and $1.6 million for the three and six months ended June 30, 2015.

Note 15. Employee Share-Based Incentive Compensation Plans
 
White Mountains’s Long-Term Incentive Plan (the “WTM Incentive Plan”) provides for grants of various types of share-based and non share-based incentive awards to key employees and service providers of White Mountains. White Mountains’s share-based compensation incentive awards consist of performance shares, restricted shares and stock options.

Share-Based Compensation Based on White Mountains Common Shares
 
WTM Performance Shares
Performance shares are conditional grants of a specified maximum number of common shares or an equivalent amount of cash. Awards generally vest at the end of a three-year period, are subject to the attainment of pre-specified performance goals, and are valued based on the market value of common shares at the time awards are paid.  The following table summarizes performance share activity for the three and nine months ended September 30, 2016March 31, 2017 and 20152016 for performance shares granted under the WTM Incentive Plan:
Three Months Ended September 30, Nine Months Ended September 30, Three Months Ended March 31,
2016 2015 2016 2015 2017 2016
Millions, except share amounts
Target
Performance
Shares
Outstanding
 
Accrued
Expense
 
Target
Performance
Shares
Outstanding
 
Accrued
Expense
 
Target
Performance
Shares
Outstanding
 
Accrued
Expense
 
Target
Performance
Shares
Outstanding
 
Accrued
Expense
 Target Performance
Shares Outstanding		 
Accrued
Expense
 Target Performance
Shares Outstanding		 
Accrued
Expense
Beginning of period73,297
 $32.5
 106,572
 $28.8
 93,654
 $57.7
 111,257
 $44.4
 80,353
 $42.4
 93,654
 $57.7
Shares paid or expired(1)

 
 (8,958) (5.5) (36,294) (41.0) (42,959) (30.4) (30,167) (20.8) —
 —
New grants(2)
6,400
 —
 
 —
 22,615
 —
 29,195
 —
 16,460
 —
 16,215
 —
Forfeitures and cancellations(3)(2)
(160) (.1) (3,960) (.8) (438) .2
 (3,839) (.3) (9,841) (5.7) (1,186) (.6)
Expense recognized—
 5.0
 —
 30.0
 —
 20.5
 —
 38.8
 —
 8.1
 —
 14.2
End of period(4)(3)
79,537
 $37.4
 93,654
 $52.5
 79,537
 $37.4
 93,654
 $52.5
 56,805
 $24.0
 108,683
 $71.3
(1) WTM performance share payments in 2017 for the 2014-2016 performance cycle, which were paid in March 2017, ranged from 34% to 76% of target.  WTM performance share payments in 2016 for the 2013-2015 performance cycle which were paid in April 2016, ranged from 140% to 142% of target. WTM performance share payments in 2015 for the 2012-2014 performance cycle ranged from 88% to 131.5% of target. 
(2)In the third quarter of 2016 White Mountains granted 3,000 WTM performance shares for the 2015-2017 performance cycle and 3,400 WTM performance shares for the 2016-2018 performance cycle.
(3) Amounts include changes in assumed forfeitures, as required under GAAP.
(4)(3) Outstanding performance share awards as of September 30,March 31, 2017 and 2016 exclude 2,195 and 2015 both exclude 7,315 and 10,82510,826 performance share awards granted to employees of Sirius Group.

For performance shares earned in the 2014-2016 performance cycle, all performance shares earned were settled in cash. For the performance shares earned in the 2013-2015 performance cycle, the Company issued 5,000 common shares and settled the remainder in cash. For the 2012-2014 performance cycle, all performance shares earned were settled in cash. If all the outstanding WTM performance shares had vested on September 30, 2016March 31, 2017, the total additional compensation cost to be recognized would have been $26.930.5 million, based on accrual factors at September 30, 2016March 31, 2017 (common share price and payout assumptions).
 

Performance Shares granted under the WTM Incentive Plan
The following table summarizes performance shares outstanding and accrued expense for performance shares awarded under the WTM Incentive Plan at September 30, 2016March 31, 2017 for each performance cycle:
Millions, except share amounts 
Target
Performance
Shares
Outstanding
 
Accrued
Expense
 
Target Performance
Shares Outstanding
 
Accrued
Expense
Performance cycle:  
  
  
  
2017 – 2019 16,460
 $1.2
2016 – 2018 19,615
 $3.4
 19,415
 7.3
2015 – 2017 31,795
 15.1
 21,795
 15.8
2014 – 2016 30,167
 19.9
Sub-total 81,577
 38.4
 57,670
 24.3
Assumed forfeitures (2,040) (1.0) (865) (.3)
Total at September 30, 2016 79,537
 $37.4
March 31, 2017 56,805
 $24.0


Restricted Shares
The following table summarizes the unrecognized compensation cost associated with the outstanding restricted share awards for the three and nine months ended September 30, 2016March 31, 2017 and 20152016:
 Three Months Ended September 30, Nine Months Ended September 30, Three Months Ended March 31,
 2016 2015 2016 2015 2017 2016
Millions, except share amounts Restricted
Shares		 Unamortized
Issue Date
Fair Value		 Restricted
Shares		 Unamortized
Issue Date
Fair Value		 
Restricted
Shares
 
Unamortized
Issue Date
Fair Value
 
Restricted
Shares
 
Unamortized
Issue Date
Fair Value
 Restricted
Shares		 Unamortized
Issue Date Fair Value		 Restricted
Shares		 Unamortized
Issue Date Fair Value
Non-vested,          
  
  
  
        
Beginning of period 66,470
 $24.2
 71,875
 $23.2
 70,675
 $15.7
 83,314
 $14.3
 70,620
 $19.7
 70,675
 $15.7
Issued 4,150
 3.4
 

 

 25,365
 19.7
 23,640
 15.7
 16,735
 15.8
 21,215
 16.8
Vested —
 —
 (1,200) —
 (24,620) —
 (36,279) —
 (22,015) —
 (24,620) —
Forfeited —
 —
 —
 —
 (800) .2
 —
 —
 (5,200) (2.8) (800) (.3)
Expense recognized (1)
 —
 (3.8) —
 (3.7) —
 (11.8) —
 (10.5) —
 (3.6) —
 (3.0)
End of period (2)(1)
 70,620
 $23.8
 70,675
 $19.5
 70,620
 $23.8
 70,675
 $19.5
 60,140
 $29.1
 66,470
 $29.2
(1)   In connection with the sale of Sirius Group in the second quarter of 2016, White Mountains recognized $1.4 from accelerating the amortization of the issue date fair value for shares issued to Sirius Group employees, who no longer have a service obligation to the Company.
(2) Restricted share awards outstanding as of September 30,March 31, 2017 and 2016 include 5,235 and 2015 include 2,512 and 3,5722,195 restricted shares issued to employees of Sirius Group, which was accounted for as discontinued operations.

During the three and nine months ended September 30,March 31, 2017, White Mountains issued 16,735 restricted shares that vest on January 1, 2020. During the first three months of 2016, White Mountains issued 4,150 and 25,36521,215 restricted shares that vest on January 1, 2019. During the first nine months of 2015, White Mountains issued 23,640 restricted shares that vest on January 1, 2018. The unrecognized compensation cost at September 30, 2016March 31, 2017 is expected to be recognized ratably over the remaining vesting periods. 

Stock Options

Non-Qualified Options
As September 30, 2016 and DecemberMarch 31, 2015,2017, the 125,000 Non-Qualified options issued to the Company’s former Chairman and CEO held 120,000 and 125,000have been exercised. During the first quarter of 2017, 40,000 Non-Qualified Options, which are exercisablewith an intrinsic value of $4.4 million, were exercised in exchange for 5,142 common shares with an equal total market value. During 2016, 5,000 Non-Qualified Options, with an intrinsic value of $0.4 million, were exercised at a$742 per common share and 80,000 Non-Qualified Options, with an intrinsic value of $8.4 million, were exercised in exchange for 9,930 common shares with an equal total market value. Intrinsic value represents the difference between the market price of the Company’s common shares at the date of exercise less the fixed strike price of $742 per common share and expire on January 20, 2017. The potential in-the-money value of the Non-Qualified Options in excess of $100 million is limited to 50% of the excess amount.share. The Non-Qualified Options were fully amortized as of the first quarter in 2011.
On May 5, 2016, the Company’s Chairman and CEO exercised 5,000 Non-Qualified Options at $742 per common share.


Share-Based Compensation Based on OneBeacon Ltd. Common Shares

The OneBeacon Long-Term Incentive Plan (the “OneBeacon Incentive Plan”) provides for grants to key employees of OneBeacon various types of share-based and non share-based incentive awards.  OneBeacon’s share-based incentive awards include OneBeacon performance shares and restricted shares.

OneBeacon Performance Shares
OneBeacon performance shares are conditional grants of a specified maximum number of common shares or an equivalent amount of cash.  OneBeacon performance share awards generally vest at the end of a three-year period, are subject to the attainment of pre-specified performance goals, and are valued based on the market value of OneBeacon Ltd. common shares at the time awards are paid.  No OneBeacon performance shares were issued for the 2017-2019 cycle.
The following table summarizes performance share activity for the three and nine months ended September 30, 2016March 31, 2017 and 20152016 for OneBeacon performance shares granted under the OneBeacon Incentive Plan:
 Three Months Ended September 30, Nine Months Ended September 30, Three Months Ended March 31,
 2016 2015 2016 2015 2017 2016
Millions, except share amounts  
Target
Performance
Shares
Outstanding
 
Accrued
Expense
 
Target
Performance
Shares
Outstanding
 
Accrued
Expense
 
Target
Performance
Shares
Outstanding
 
Accrued
Expense
 
Target
Performance
Shares
Outstanding
 
Accrued
Expense
 Target Performance
Shares Outstanding		 
Accrued
Expense
 Target Performance
Shares Outstanding		 
Accrued
Expense
Beginning of period 441,206
 $1.0
 462,147
 $2.4
 449,435
 $1.4
 517,470
 $3.4
 452,519
 $1.6
 449,435
 $1.4
Shares paid or expired(1)
 —
 —
 —
 —
 (167,300) (.7) (181,290) (1.5) (142,710) —
 (167,300) (.7)
New grants —
 —
 —
 —
 163,150
 —
 154,887
 —
 —
 —
 163,150
 —
Assumed forfeitures and cancellations(2)
 —
 —
 —
 —
 (4,079) —
 (28,920) —
 (13) —
 (4,079) —
Expense recognized —
 .3
 —
 (.3) —
 .6
 —
 .2
 —
 .3
 —
 .4
End of period 441,206
 $1.3
 462,147
 $2.1
 441,206
 $1.3
 462,147
 $2.1
 309,796
 $1.9
 441,206
 $1.1
(1) There were no payments made in 2017 for the 2014-2016 performance cycle; those performance shares did not meet the threshold performance goals and expired. OneBeacon performance share payments in 2016 for the 2013-2015 performance cycle were at 24.3% of target. OneBeacon performance share payments in 2015 for the 2012-2014 performance cycle were at 45.7% of target.
(2) Amounts include changes in assumed forfeitures, as required under GAAP.

If the outstanding OneBeacon performance shares had been vested on September 30, 2016March 31, 2017, the total additional compensation cost to be recognized would have been $2.31.8 million, based on accrual factors at September 30, 2016March 31, 2017 (common share price, accumulated dividends and payout assumptions).
The following table summarizes OneBeacon performance shares outstanding awarded under the OneBeacon Incentive Plan at September 30, 2016March 31, 2017 for each performance cycle:
Millions, except share amounts Target
Performance
Shares
Outstanding		 Accrued Expense Target Performance
Shares Outstanding		 Accrued Expense
Performance cycle:  
  
  
  
2016 – 2018 163,150
 $.6
 163,150
 $1.1
2015 – 2017 146,659
 .7
 146,646
 .8
2014 – 2016 142,710
 —
Sub-total 452,519
 1.3
 309,796
 1.9
Assumed forfeitures (11,313) —
 —
 —
Total at September 30, 2016 441,206
 $1.3
March 31, 2017 309,796
 $1.9

OneBeacon Restricted Shares
 The following table summarizes the unrecognized compensation cost associated with the outstanding OneBeacon restricted stock awards for the three and nine months ended September 30, 2016March 31, 2017 and 20152016:
 Three Months Ended September 30, Nine Months Ended September 30, Three Months Ended March 31,
 2016 2015 2016 2015 2017 2016
Millions, except share amounts Restricted
Shares		 Unamortized
Issue Date
Fair Value		 Restricted
Shares		 Unamortized
Issue Date
Fair Value		 Restricted
Shares		 Unamortized
Issue Date
Fair Value		 Restricted
Shares		 Unamortized
Issue Date
Fair Value		 Restricted
Shares		 Unamortized
Issue Date Fair Value		 Restricted
Shares		 Unamortized
Issue Date Fair Value
Non-vested,  
  
  
  
  
  
  
  
  
  
  
  
Beginning of period 395,872
 $3.5
 390,950
 $3.5
 382,722
 $2.5
 612,500
 $3.5
 395,872
 $2.1
 382,722
 $2.5
Issued —
 —
 —
 —
 170,650
 2.3
 75,950
 1.1
 461,160
 7.4
 170,650
 2.3
Vested —
 —
 —
 —
 (157,500) —
 (296,000) —
 (157,500) —
 (157,500) —
Forfeited —
 —
 —
 —
 —
 —
 (1,500) —
 —
 —
 —
 —
Expense recognized —
 (.7) —
 (.5) —
 (2.0) —
 (1.6) —
 (.9) —
 (.5)
End of period 395,872
 $2.8
 390,950
 $3.0
 395,872
 $2.8
 390,950
 $3.0
 699,532
 $8.6
 395,872
 $4.3

On February 28, 2017, OneBeacon issued 461,160 restricted shares, of which 235,000 are scheduled to cliff vest on August 28, 2018, 115,450 are scheduled to cliff vest on January 1, 2020, and 110,710 are scheduled to vest in two equal installments on February 24, 2018 and February 24, 2019.
On February 24, 2016, OneBeacon issued 170,650 shares of restricted stock,shares, of which 92,500 restricted shares vest on February 24, 2018 and 78,150 vest on January 1, 2019. On February 24, 2015, OneBeacon issued 75,950 restricted shares, which vest on January 1, 2018.
On May 25, 2011, OneBeacon issued 630,000 restricted shares to its CEO that vest in four equal annual installments. The first installment vested on February 22, 2014.  Concurrently with the grant of the restricted shares, 35,000 OneBeacon performance shares issued to OneBeacon’s CEO for the 2011-2013 performance share cycle were forfeited and performance share awards to OneBeacon’s CEO for the subsequent five years were reduced by 35,000 shares.
As of September 30, 2016,March 31, 2017, unrecognized compensation expense of $2.8$8.6 million related to restricted stock awards is expected to be recognized over the remaining vesting periods.

OneBeacon Restricted Stock Units
During the first ninethree months of 2017, the OneBeacon Compensation Committee awarded to certain employees 240,160 restricted stock units (“RSUs”) that are schedule to vest on December 31, 2019, contingent upon the approval of the OneBeacon 2017 Long-Term Incentive Plan at the 2017 Annual General Meeting to be held May 24, 2017, all of which were outstanding as of March 31, 2017.
During the first three months of 2016, the OneBeacon Compensation Committee awarded to certain employees 233,461 restricted stock units (“RSUs”)222,449 RSUs that are scheduled to vest on December 31, 2018, of which, net of forfeiture assumptions, 219,112208,499 were outstanding as of September 30, 2016. DuringMarch 31, 2017.
At vesting the first nine months of 2015, the OneBeacon Compensation Committee awarded to certain employees 215,698 RSUs that are scheduled to vest on December 31, 2017, of which, net of forfeiture assumptions, 177,409 were outstanding as of September 30, 2016. The RSUs will be paid out in cash or shares at the discretion of the OneBeacon Compensation Committee. For the three and nine months ended September 30,March 31, 2017 and 2016, the expense associated with the RSUs was $0.5$0.6 million and $1.4$0.4 million. ForIf all of the threeoutstanding RSUs had been vested on March 31, 2017, the total additional compensation cost to be recognized would have been $7.0 million, based on current accrual factors (common share price and nine months ended September 30, 2015, the expense associated with the RSUs was $0.2 million and $0.6 million.accumulated dividends) as of March 31, 2017.


Note 16. Fair Value of Financial Instruments
 
White Mountains accounts for its financial instruments at fair value with the exception of the OBH Senior Notes and MediaAlpha Bank Facility, which are recorded as debt at face value less unamortized original issue discount.
The following table summarizes the fair value and carrying value of these financial instruments as of September 30, 2016March 31, 2017 and December 31, 20152016:
 September 30, 2016 December 31, 2015 March 31, 2017 December 31, 2016
Millions 
Fair
Value
 
Carrying
Value
 
Fair
Value
 
Carrying
Value
 
Fair
Value
 
Carrying
Value
 
Fair
Value
 
Carrying
Value
OBH Senior Notes $277.8
 $273.1
 $276.4
 $272.9
 $279.4
 $273.2
 $274.2
 $273.2
MediaAlpha Bank Facility 15.7
 15.4
 15.0
 14.7
 11.7
 11.5
 13.0
 12.7

The fair value estimate for the OBH Senior Notes has been determined using quoted market prices. The OBH Senior Notes are considered a Level 2 measurement.
The fair value estimate for the MediaAlpha Bank Facility has been determined based on a discounted cash flows approach and is considered to be a Level 3 measurement.


Note 17. Held for Sale and Discontinued Operations

Sirius Group
On April 18, 2016, White Mountains completed the sale of Sirius Group to CMI for approximately $2.6 billion. $161.8 million of this amount was used to purchase certain assets to be retained by White Mountains out of Sirius Group, including shares of OneBeacon. The amount paid at closing was based on an estimate of Sirius Group’s closing date tangible common shareholder’s equity. In the second quarter ofDuring 2016, White Mountains recorded $366.6$363.2 million of gain from sale of Sirius Group in discontinued operations in the statement of operations and $113.3 million in other comprehensive income from discontinued operations. In the third quarter of 2016, White Mountains recorded a $4.0 million reduction to the gain from sale of Sirius Group in discontinued operations as a result of the final true-up of Sirius Group's closing date tangible common shareholder's equity.
For the nine months ended September 30, 2016, White Mountains recorded a $4.3 million net loss from discontinued operations from Sirius Group and $32.0 million of other comprehensive income.
Through April 18, 2016, Sirius Group’s results are reported as discontinued operations and assets and liabilities held for sale within White Mountains’s GAAP financial statements. Assets held for sale did not include White Mountains’s investment in OneBeacon and certain other investments that are in the Sirius Group legal entities. As of December 31, 2015, the value of these investments, net of related tax effects, was $686.2 million, of which $528.6 million related to Symetra. Net income (loss)loss from discontinued operations does not include White Mountains’s net investment income and realized and unrealized investment gains and losses associated with these investments. For the ninethree months ended September 30,March 31, 2016, $3.7$4.1 million of net investment income and realized and unrealized investment gains and losses, net of related tax effects, that are included in the Sirius Group legal entities have been excluded from net income (loss)loss from discontinued operations. For the three and nine months ended September 30, 2015, $0.8 million and $3.5March 31, 2016, White Mountains recorded $0.9 million of net investment income and realized and unrealized investment gains and losses, net of related tax effects, that had been previously included in the Sirius Group legal entities have been excluded from net income (loss)loss from discontinued operations. As partoperations and $37.2 million of the sale ofother comprehensive income from Sirius Group, White Mountains purchased Ashmere, a subsidiary formerly owned by Sirius Group. Ashmere was under an agreement to be sold as of September 30, 2016 and the sale was completed on October 12, 2016. As of September 30, 2016, Ashmere's assets and liabilities are presented as held for sale.

Tranzact
On June 9, 2016, White Mountains announced that it had entered into a definitivean agreement for the sale of Tranzact to an affiliate of Clayton, Dubilier & Rice, LLC. On July 21, 2016, White Mountains completed the sale of Tranzact and received net proceeds of $221.3 million. Duringmillion at closing. On October 5, 2016, White Mountains received additional proceeds of $1.2 million following the three and nine months ended September 30,release of the post-closing purchase price adjustment escrow. See Note 2 — “Significant Transactions”.
During 2016, White Mountains recorded a $51.9 million of gain from the sale of Tranzact in discontinued operations, which included a $30.2 million tax expense for the reversal of a tax valuation allowance that is offset by a tax benefit recorded in continuing operations. In the statementfirst quarter of operations. (See Note 2 - “Significant Transactions”).
Through July 21, 2016, Tranzact's results of operations are reported as discontinued operations and assets and liabilities held for sale within White Mountains's GAAP financial statements. For the stub period ended July 21, 2016 and the nine months ended September 30, 2016,2017, White Mountains recorded a net loss$1.0 million reduction to the gain from sale of Tranzact in discontinued operations as a result of $2.1 million and $2.6 million from Tranzact. For the three and nine months ended September 30, 2015, White Mountains recorded a net loss from discontinued operations of $7.7 million and $14.2 million from Tranzact. At September 30, 2016 White Mountains also recorded a liability of $2.8 million for escrow funds associated with the sale payable to the non-controlling interests.tax payments.
During 2016, White Mountains recognized a $14.0$21.4 million tax benefit in continuing operations related to the reversal of a valuation allowance that resulted from the gain on the sale of Tranzact recognized within discontinued operations. This tax benefit was recorded in continuing operations with an offsetting amount of net tax expense recorded in discontinued operations;operations, $30.2 million of tax expense related to the valuation allowance reversal was recorded to gain from sale of Tranzact in discontinued operations and a $16.1$8.8 million tax benefit related to the valuation allowance reversal was recorded to net income (loss) from discontinued operations.
Through July 21, 2016, Tranzact’s results of operations are reported as discontinued operations and assets and liabilities held for sale within White Mountains’s GAAP financial statements. For the three months ended March 31 2016, White Mountains recorded a net loss from discontinued operations of $2.0 million from Tranzact.


Star & Shield
On July 1, 2016, SSIE voluntarily ceased writing new policies effective July 1, 2016policies. As a result, White Mountains wrote off its investment in SSIE Surplus Notes which resulted in a $21.0 million total decrease to net income attributable to White Mountains's common shareholders and will voluntarily cease renewing policies at a future date, subjectcorresponding increase to regulatory approval.net income attributable to non-controlling interests. On August 19, 2016,January 13, 2017, White Mountains reached an agreement to sell Star & Shield and its investment in SSIE surplus notesSurplus Notes to National General Holdings Corp. As a result,K2 Insurance Services, LLC and the sale was completed on March 7, 2017. White Mountains has presenteddid not recognize any gain or loss on the sale. Through December 31, 2016, Star & Shield's and SSIE'sShield’s assets and liabilities are reported as held for sale as of September 30, 2016 and December 31, 2015.

OneBeacon Runoff
For the nine months ended September 30, 2015,within White Mountains recorded $0.3 million to the gain from sale of discontinued operations related to an adjustment on the estimated loss on sale, which included the final settlement of certain post-closing items. For the three and nine months ended September 30, 2015, the net loss from discontinued operations relating to the Runoff Business, net of tax, was $0.1 million and $0.4 million. The transaction to sell the Runoff Business was completed in December 2014.

Esurance
For the three and nine months ended September 30, 2015, White Mountains recorded a net gain from the sale of discontinued operations of $10.3 million and $17.9 million, which primarily related to an installment payment from Allstate for the favorable development on loss reserves. (See Note 18 - “Contingencies”).Mountains’s GAAP financial statements.

Summary of Reclassified Balances and Related Items

Net Assets Held for Sale
The following summarizes the assets and liabilities associated with business classified as held for sale. At December 31, 2015, amounts presented relate to Sirius Group, Tranzact, Star and Shield and SSIE. At September 30, 2016, the amounts presented relate to Star & Shield and Shield, SSIE and Ashmere, a subsidiary formerly owned by Sirius Group.SSIE.
Millions September 30, 2016 December 31, 2015 December 31, 2016
Assets held for sale      
Fixed maturity investments, at fair value $13.4
 $2,383.5
 $6.6
Short-term investments, at amortized cost (which approximates fair value) 1.3
 352.1
 .2
Common equity securities, at fair value —
 174.4
Other long-term investments —
 72.2
Total investments 14.7
 2,982.2
 6.8
Cash 3.8
 150.1
 .9
Reinsurance recoverable on unpaid losses .6
 283.6
 .3
Reinsurance recoverable on paid losses —
 10.2
Insurance and reinsurance premiums receivable 2.0
 326.6
 1.5
Deferred acquisition costs —
 74.6
Deferred tax asset —
 303.1
Ceded unearned insurance and reinsurance premiums —
 87.7
Accounts receivable on unsettled investment sales —
 29.0
Goodwill and other intangible assets 5.2
 330.5
Other assets .7
 212.8
 .6
Total assets held for sale $27.0
 $4,790.4
 $10.1
Liabilities held for sale   
 
Loss and loss adjustment expense reserves $6.0
 $1,650.4
 $5.0
Unearned insurance and reinsurance premiums 1.6
 344.3
 1.2
Debt —
 506.4
Deferred tax liability —
 270.6
Accrued incentive compensation —
 64.2
Ceded reinsurance payable (.5) 67.7
Funds held under reinsurance treaties —
 52.9
Other liabilities .7
 90.9
 (1.1)
Total liabilities held for sale 7.8
 3,047.4
 5.1
Net assets held for sale $19.2
 $1,743.0
 $5.0

Net Income (Loss) from Discontinued Operations 
The following summarizes the results of operations, including related income taxes associated with the business classified as discontinued operations. For the three and nine months ended September 30,March 31, 2016, the amounts presented relate to Sirius Group and Tranzact. For the three and nine months ended September 30, 2015, the amounts presented relate to Sirius Group, Tranzact, Esurance, and the OneBeacon's runoff business. The results of discontinued operations from Sirius Group and Tranzact up to the closing date of the transaction inure to White Mountains.

  Three Months Ended Three Months Ended
  September 30, 2016 September 30, 2015
Millions Sirius Group Other Disc Ops Total Sirius Group Other Disc Ops Total
Revenues            
Earned insurance premiums $—
 $—
 $—
 $202.8
 $—
 $202.8
Net investment income —
 —
 —
 10.5
 —
 10.5
Net realized and unrealized losses —
 —
 —
 (.9) —
 (.9)
Other revenue —
 14.8
 14.8
 1.8
 38.5
 40.3
Total revenues —
 14.8
 14.8
 214.2
 38.5
 252.7
Expenses            
Loss and loss adjustment expenses —
 —
 —
 121.7
 —
 121.7
Insurance and reinsurance acquisition expenses —
 —
 —
 45.4
 —
 45.4
Other underwriting expenses —
 —
 —
 24.8
 —
 24.8
General and administrative expenses —
 16.2
 16.2
 9.4
 45.3
 54.7
Interest expense —
 .5
 .5
 6.6
 1.0
 7.6
Total expenses —
 16.7
 16.7
 207.9
 46.3
 254.2
Pre-tax (loss) income —
 (1.9) (1.9) 6.3
 (7.8) (1.5)
Income tax expense (benefit) —
 15.9
 15.9
 (2.3) —
 (2.3)
Net income (loss) from discontinued operations —
 14.0
 14.0
 4.0
 (7.8) (3.8)
  Net loss from sale of discontinued operations - Sirius (4.0) —
 (4.0) —
 —
 —
  Net gain from sale of discontinued operations - Tranzact —
 51.9
 51.9
 —
 —
 —
Net gain from sale of discontinued operations - Esurance —
 —
 —
 —
 10.3
 10.3
Total (loss) income from discontinued operations $(4.0) $65.9
 $61.9
 $4.0
 $2.5
 $6.5
Change in foreign currency translation and other
   from discontinued operations
 —
 —
 —
 (18.5) —
 (18.5)
Comprehensive (loss) income from discontinued operations $(4.0) $65.9
 $61.9
 $(14.5) $2.5
 $(12.0)


 Nine Months Ended Nine Months Ended Three Months Ended Three Months Ended
 September 30, 2016 September 30, 2015 March 31, 2017 March 31, 2016
Millions Sirius Group Other Disc Ops Total Sirius Group Other Disc Ops Total Sirius Group Other Disc Ops Total Sirius Group Other Disc Ops Total
Revenues                        
Earned insurance premiums $240.1
 $—
 $240.1
 $623.3
 $—
 $623.3
 $—
 $—
 $—
 $202.4
 $—
 $202.4
Net investment income 14.4
 —
 14.4
 28.6
 —
 28.6
 —
 —
 —
 12.2
 —
 12.2
Net realized and unrealized (losses) gains (1.5) —
 (1.5) 31.4
 —
 31.4
Net realized and unrealized losses —
 —
 —
 (8.8) —
 (8.8)
Other revenue .6
 119.6
 120.2
 (20.2) 110.6
 90.4
 —
 —
 —
 (4.1) 57.8
 53.7
Total revenues 253.6
 119.6
 373.2
 663.1
 110.6
 773.7
 —
 —
 —
 201.7
 57.8
 259.5
Expenses                        
Loss and loss adjustment expenses 154.9
 —
 154.9
 311.3
 —
 311.3
 —
 —
 —
 113.7
 —
 113.7
Insurance and reinsurance acquisition expenses 59.0
 —
 59.0
 135.5
 —
 135.5
 —
 —
 —
 48.4
 —
 48.4
Other underwriting expenses 30.9
 —
 30.9
 78.0
 —
 78.0
 —
 —
 —
 26.7
 —
 26.7
General and administrative expenses 10.4
 116.7
 127.1
 22.4
 122.5
 144.9
 —
 —
 —
 8.1
 53.4
 61.5
Interest expense 7.9
 3.2
 11.1
 20.0
 2.7
 22.7
 —
 —
 —
 6.6
 1.4
 8.0
Total expenses 263.1
 119.9
 383.0
 567.2
 125.2
 692.4
 —
 —
 —
 203.5
 54.8
 258.3
Pre-tax (loss) income (9.5) (.3) (9.8) 95.9
 (14.6) 81.3
 —
 —
 —
 (1.8) 3.0
 1.2
Income tax benefit (expense) 3.1
 13.8
 16.9
 (22.2) —
 (22.2)
Income tax expense (benefit) —
 —
 —
 .9
 (1.0) (.1)
Net (loss) income from discontinued operations (6.4) 13.5
 7.1
 73.7
 (14.6) 59.1
 —
 —
 —
 (.9) 2.0
 1.1
Net gain from sale of discontinued operations - Sirius 362.6
 —
 362.6
 —
 —
 —
Net gain from sale of discontinued operations - Tranzact —
 51.9
 51.9
 —
 —
 —
Net gain from sale of discontinued operations - OneBeacon —
 —
 —
 —
 .3
 .3
Net gain from sale of discontinued operations - Esurance —
 —
 —
 —
 17.9
 17.9
Total income from discontinued operations $356.2
 $65.4
 $421.6
 $73.7
 $3.6
 $77.3
Net loss from sale of discontinued operations —
 (1.0) (1.0) —
 —
 —
Total (loss) income from discontinued operations $—
 $(1.0) $(1.0) $(.9) $2.0
 $1.1
Change in foreign currency translation and other
from discontinued operations
 32.0
 —
 32.0
 (62.1) —
 (62.1) —
 —
 —
 37.2
 —
 37.2
Change in foreign currency translation and other
from sale of Sirius Group
 113.3
 —
 113.3
 —
 —
 —
Comprehensive income from discontinued operations $501.5
 $65.4
 $566.9
 $11.6
 $3.6
 $15.2
Comprehensive (loss) income from discontinued operations $—
 $(1.0) $(1.0) $36.3
 $2.0
 $38.3

Net Change in Cash from Discontinued Operations
The following summarizes the net change in cash, including income tax (payment to) refund from national governments and interest paid associated with the business classified as discontinued operations:
 Nine Months Ended Three Months Ended
 September 30, March 31,
(Millions) 2016 2015 2017 2016
Net cash (used for) provided from operations $(16.2) $22.7
 $—
 $(40.7)
Net cash provided from investing activities 213.3
 2.8
 —
 33.6
Net cash (used for) provided from financing activities (.2) 19.6
 —
 (8.3)
Effect of exchange rate changes on cash —
 (4.1) —
 4.2
Net change in cash during the period 196.9
 41.0
 —
 (11.2)
Cash balances at beginning of period 150.1
 116.6
 .9
 150.2
Net change in cash held for sale 2.6
 —
 (.9) .9
Cash sold as part of sale of consolidated subsidiaries 345.8
 —
Cash balances at end of period $3.8
 $157.6
 $—
 $139.9
Supplemental cash flows information:        
Interest paid $(1.4) $(28.1) $—
 $(1.4)
Net income tax payment to national governments $(31.8) $(30.3) $—
 $(36.4)


Earnings Per Share
Basic earnings per share amounts are based on the weighted average number of common shares outstanding including unvested restricted shares that are considered participating securities.  Diluted earnings per share amounts are based on the weighted average number of common shares including unvested restricted shares and the net effect of potentially dilutive common shares outstanding. The following table outlines the computation of earnings per share for discontinued operations for the three and nine months ended September 30, 2016March 31, 2017 and 2015:2016:
 Three Months Ended Nine Months Ended Three Months Ended
 September 30, September 30, March 31,
 2016 2015 2016 2015 2017 2016
Basic and diluted earnings per share numerators (in millions):        
    
Net income attributable to White Mountains’s common shareholders $61.9
 $6.5
 $421.6
 $77.3
 $(1.0) $1.1
Allocation of income for participating unvested restricted common shares(1)
 (.9) (.1) (5.1) (.9) —
 —
Net income attributable to White Mountains’s common shareholders,
net of restricted common share amounts (2)
 $61.0
 $6.4
 $416.5
 $76.4
 $(1.0) $1.1
Basic earnings per share denominators (in thousands):        
    
Total average common shares outstanding during the period 4,867.4
 5,890.1
 5,166.6
 5,951.1
 4,564.6
 5,539.6
Average unvested restricted common shares(3)
 (68.1) (70.9) (62.9) (67.1) (52.5) (54.0)
Basic earnings per share denominator 4,799.3
 5,819.2
 5,103.7
 5,884.0
 4,512.1
 5,485.6
Diluted earnings per share denominator (in thousands):        
    
Total average common shares outstanding during the period(4)
 4,879.4
 5,890.1
 5,174.8
 5,951.1
 4,564.6
 5,540.5
Average unvested restricted common shares(3)
 (68.1) (70.9) (62.9) (67.1) (52.5) (54.0)
Diluted earnings per share denominator(4)
 4,811.3
 5,819.2
 5,111.9
 5,884.0
 4,512.1
 5,486.5
Basic earnings per share (in dollars): $12.72
 $1.09
 $81.60
 $12.98
 $(.22) $.20
Diluted earnings per share (in dollars): $12.69
 $1.09
 $81.47
 $12.98
 $(.22) $.20
(1) Restricted shares issued by White Mountains contain dividend participation features, and therefore, are considered participating securities.
(2) Net earnings attributable to White Mountains’s common shareholders, net of restricted share amounts, is equal to undistributed earnings for the three and nine months ended September 30, 2016March 31, 2017 and 2015.2016.
(3) Restricted common shares outstanding vest either in equal annual installments or upon a stated date. (SeeSee Note 15 - “Employee Share-Based Compensation Plans”).
(4) ) The diluted earnings per share denominator for the three and nine months ended September 30,March 31, 2016 includes the impact of 120,000125,000 common shares issuable upon exercise of the non-qualified options outstanding, which results in 11,943 and 8,208882 incremental shares outstanding over the periods.period. The incremental shares had an effect on diluted earning per share of less than $0.01 per share.


Note 18. Contingencies

Legal Contingencies
White Mountains, and the insurance and reinsurance industry in general, are routinely subject to claims related litigation and arbitration in the normal course of business, as well as litigation and arbitration that do not arise from, or are directly related to, claims activity. White Mountains’s estimates of the costs of settling matters routinely encountered in claims activity are reflected in the reserves for unpaid loss and LAE. (SeeSee Note 3 -— “Loss and Loss Adjustment Expense Reserves”).
White Mountains considers the requirements of ASC 450 when evaluating its exposure to non-claims related litigation and arbitration. ASC 450 requires that accruals be established for litigation and arbitration if it is probable that a loss has been incurred and it can be reasonably estimated. ASC 450 also requires that litigation and arbitration be disclosed if it is probable that a loss has been incurred or if there is a reasonable possibility that a loss may have been incurred.
Although the ultimate outcome of claims and non-claims related litigation and arbitration, and the amount or range of potential loss at any particular time, is often inherently uncertain, management does not believe that the ultimate outcome of such claims and non-claims related litigation and arbitration will have a material adverse effect on White Mountains’s financial condition, results of operations or cash flows.
The following summarizes significant legal contingencies, ongoing non-claims related litigation or arbitration as of September 30, 2016March 31, 2017:

Sale of Sirius Group
On April 18, 2016, the Company completed the sale of Sirius Group to CMI pursuant a Stock Purchase Agreement dated as of July 24, 2015 (filed as an exhibit to the Company’s current report on Form 8-K on July 27, 2015, the (“Agreement”)). White Mountains has provided indemnification to CMI for certain representations and warranties made in the Agreement. Additionally, the final purchase price payable by CMI under the Agreement, which is based upon the tangible book value of Sirius Group at the closing date, was subject to a true-up process that was completed in the third quarter of 2016 and resulted in a reduction to the gain from sale of Sirius Group in discontinued operation of $4.0 million.

Sale of Esurance
On October 7, 2011, the Company completed the sale of its Esurance and Answer Financial subsidiaries (the “Transferred Subsidiaries”) to The Allstate Corporation (“Allstate”) pursuant to a Stock Purchase Agreement dated as of May 17, 2011 (filed as an exhibit to the Company’s current report on Form 8-K on May 18, 2011.  Subject to specified thresholds and limits, the Company remains contingently liable to Allstate for specified matters related to the pre-closing period, including (a) specified litigation matters, (b) losses of the Transferred Subsidiaries arising from extra-contractual claims and claims in excess of policy limits (“ECO/EPL losses”), (c) certain corporate reorganizations effected to remove entities from the Transferred Subsidiaries that were not being sold in the transaction, and (d) certain tax matters, including certain net operating losses being less than stated levels.  In addition, the Company retained 90% of positive or negative development in the loss reserves of the Transferred Subsidiaries as of the closing date (net of ECO/EPL losses) through December 31, 2014 (the “Reserve Settlement”). For the three and nine months ended September 30, 2015, White Mountains recorded a net gain from the sale of discontinued operations of $10.3 million and an additional $17.9 million related to the final settlement with Allstate for favorable development on loss reserves transferred in the sale of Esurance and Answer Financial. Since the closing of the transaction, White Mountains received a net amount of $28.3 million from Allstate, primarily related to the favorable development on loss reserves.


Tribune Company
In June 2011, Deutsche Bank Trust Company Americas, Law Debenture Company of New York and Wilmington Trust Company (collectively referred to as “Plaintiffs”), in their capacity as trustees for certain senior notes issued by the Tribune Company (“Tribune”), filed lawsuits in various jurisdictions (the “Noteholder Actions”) against numerous defendants including OneBeacon, OneBeacon-sponsored benefit plans and other affiliates of White Mountains in their capacity as former shareholders of Tribune seeking recovery of the proceeds from the sale of common stock of Tribune in connection with Tribune’sTribune's leveraged buyout in 2007 (the “LBO”). Tribune filed for bankruptcy in 2008 in the Delaware bankruptcy court (the “Bankruptcy Court”). The Bankruptcy Court granted Plaintiffs permission to commence these LBO-related actions, and in 2011, the Judicial Panel on Multidistrict Litigation granted a motion to consolidate the actions for pretrial matters and transferred all such proceedings to the United StatesU.S. District Court for the Southern District of New York. York (the “SDNY”).

Plaintiffs seek recovery of the proceeds received by the former Tribune shareholders on a theory of constructive fraudulent transfer asserting that Tribune purchased or repurchased its common shares without receiving fair consideration at a time when it was, or as a result of the purchases of shares, was rendered, insolvent. OneBeacon has entered into a joint defense agreement with other affiliates of White Mountains that are defendants in the action. OneBeaconand OneBeacon-sponsored benefit plans received approximately $32.0$32.0 million, for Tribune common stock tendered in connection with the LBO.
The Court granted an omnibus motion to dismiss the Noteholder Actions in September 2013 and the plaintiffsPlaintiffs’ appealed. On March 29, 2016, a three judge panel of the U.S.U.S Second Circuit Court of Appeals affirmed the dismissal of the Noteholders Action.Noteholder Actions. On July 22, 2016, the Plaintiff's petition to the Second Circuit for reconsideration or for a rehearing en banc was denied in full. On September 9, 2016 the Plaintiffs filed for a writ of certiorari, seeking review in the United StatesU. S. Supreme Court.
In addition, OneBeacon, OneBeacon-sponsored benefit plans and other affiliates of White Mountains in their capacity as former shareholders of Tribune, along with thousands of former Tribune shareholders, have been named as defendants in an adversary proceeding brought by the Official Committee of Unsecured Creditors of the Tribune Company (the “Committee”), on behalf of the Tribune Company, which seeks to avoid the repurchase of shares by Tribune in the LBO on a theory of intentional fraudulent transfer (the “Committee Action”). Tribune emerged from bankruptcy in 2012, and a litigation trustee replaced the Committee as plaintiff in the Committee Action. This matter was consolidated for pretrial matters with the Noteholder Actions in the United States District Court for the Southern District of New YorkSDNY and was stayed pending the motion to dismiss in the Noteholder Action.Actions. An omnibus motion to dismiss the shareholder defendants in the Committee Action was filed in May 2014.2014 and the motion was granted on January 6, 2017. The plaintiff has requested permission to move the SDNY to certify the decision as a final judgment capable of immediate appeal. No amount has been accrued in connection with this matter as of September 30, 2016,March 31, 2017, as the amount of loss, if any, cannot be reasonably estimated.

Note 19. OneBeacon Pension Plan

OneBeacon previously sponsored the OneBeacon qualified pension plan (the “Qualified Plan”). During the ninethree months ended September 30,March 31, 2016, the Qualified Plan finalized its termination by purchasing group annuity contracts from the Principal Financial Group (“Principal Financial”), and making lump sum distributions to Qualified Plan participants electing such payments, which eliminated the remaining Qualified Plan liability. Inliability, and also ceased administratively paying benefits. As a result of these transactions, the third quarter of 2016, OneBeacon received a refund from Principal Financial related to the final settlement of the Qualified Plan andCompany recognized a pre-tax pension settlement gaincharge of $3.2 million. As of September 30,$0.3 million during the three months ended March 31, 2016, OneBeaconand no longer has a projected benefit obligation with respect to the Qualified Plan. During 2016, OneBeacon transferred $47.1 million of excess invested assets from the Qualified Plan into the trust supporting the OneBeacon 401(k) Savings and Employee Stock Ownership Plan (“KSOP”), which OneBeacon determined to be the Qualified Replacement Plan (“QRP”). As of September 30, 2016, an additional $12.6 with $13.8 million of excess invested assets remainremaining in the Qualified Plan trust foras of March 31, 2017 in order to wind-down potential post-termination obligations of that plan, as approved inby way of a March 2016 private letter ruling from the IRS received in the first quarter of 2016.IRS. The invested assets related to both the legacy Qualified Plan trust and the QRP are included in other assets and are accounted for at fair value with related income recognized in net other revenues (expenses).revenues.
OneBeacon continues to sponsor a non-qualified, non-contributory, defined benefit pension plan (“Non-qualified Plan”) covering certain employees who were employed as of December 31, 2001 and former employees who had met the eligibility requirements, as well as retirees. The Non-qualified Plan was frozen and curtailed in 2002, resulting in the pension benefit obligation being equal to the accumulated benefit obligation. The benefits are based primarily on years of service and employees’ compensation through December 31, 2002. OneBeacon’s funding policy is generally to contribute amounts to satisfy actual disbursements for the calendar year.

Note 20. Subsequent Event


On May 2, 2017, OneBeacon announced it had entered into a definitive agreement to be acquired by Intact Financial Corporation in an all-cash transaction for $18.10 per share, or roughly 1.65x tangible book value (the “Transaction”).  In addition, White Mountains entered into a definitive agreement to vote its shares of OneBeacon Ltd. in favor of the “Transaction”. White Mountains owns 75.7% of OneBeacon’s outstanding common shares, representing 96.9% of the voting power. White Mountains expects to receive gross proceeds of $1.3 billion from the Transaction, which is expected to close in the fourth quarter of 2017. It is subject to regulatory approval and other customary closing conditions.


Item 2.Management’s Discussion and Analysis of Financial Condition and Results of Operations.
 
The following discussion contains “forward-looking statements”. White Mountains intends statements that are not historical in nature, which are hereby identified as forward-looking statements, to be covered by the safe harbor provisions of the Private Securities Litigation Reform Act of 1995. White Mountains cannot promise that its expectations in such forward-looking statements will turn out to be correct. White Mountains’s actual results could be materially different from and worse than its expectations. See “FORWARD-LOOKING STATEMENTS” for specific important factors that could cause actual results to differ materially from those contained in forward-looking statements.
The followingfollowing discussion also includes threetwo non-GAAP financial measures, - adjusted comprehensive income (loss), adjusted book value per share and total adjusted capital -the return on common equity and other long-term investments including high-yield fixed maturity investments, that have been reconciled to their most comparable GAAP financial measures (seeon page 76).64. White Mountains believes these measures to be useful in evaluating White Mountains’s financial performance and condition.

RESULTS OF OPERATIONS FOR THE THREE AND NINE MONTHS ENDED SEPTEMBER 30,MARCH 31, 2017 AND 2016 AND 2015

Overview
White Mountains ended the thirdfirst quarter of 20162017 with book value per share and adjusted book value per share of $798$793 and $802.$799. Book value per share and adjusted book value per share both increased 2% and 15%were each up 1% for the third quarter, and first nine months of 2016, including dividends. Comprehensive income attributable to common shareholders increased to $92 millionGood investment returns and $592 million inunderwriting results were the third quarterprimary drivers of the increase, and first nine months of 2016 compared to comprehensive loss attributable to common shareholders of $74 million and $62 million in the third quarter and first nine months of last year. The results for the third quarter of 2016 were drivenpartially offset by an $82.1 million increase to book value and adjusted book value ($16 per share based on 5.028 million shares outstanding at July 21, 2016) from the sale of Tranzactcompensation expense recorded in the thirdfirst quarter of 2016. The results for2017 related to the first nine monthsretirement of 2016 were also driven by a $90 increase tothe Company’s former Chairman and CEO that impacted book value per share and adjusted book value per share (basedby approximately half a point.
On May 2, 2017, OneBeacon announced it had entered into a definitive agreement to be acquired by Intact Financial Corporation in an all-cash transaction for $18.10 per share, or roughly 1.65x tangible book value.  Based on 5.357White Mountains's ownership of 71.8 million OneBeacon common shares outstanding at April 18, 2016)March 31, 2017, the proceeds from the $480 million gain ontransaction would be $1.3 billion. White Mountains expects that the saletransaction will increase its book value by approximately $107 per share, which reflects compensation accruals, net of Sirius Group recordedany applicable tax effects.  The transaction is expected to close in the secondfourth quarter of 2016.2017. It is subject to regulatory approval and other customary closing conditions. See “Note 2 - “Significant Transactions”20 — Subsequent Events”.
During the third quarter of 2016, White Mountains repurchased and retired 389,373 of its common shares for $319 million at an average share price of $820.17, or approximately 102% of White Mountains’s September 30, 2016 adjusted book value per share. Year-to-date through October 31, 2016, White Mountains has repurchased 1,094,795 common shares for a total of $878 million.
OneBeacon’s book value per share increased 3% and 10%2.8%, including dividends, for the thirdfirst quarter and first nine months of 2016, including dividends.2017. OneBeacon’s GAAP combined ratio was 96%95% for both the first quarter of 2017 and 98%the first quarter of 2016. The loss ratio increased by one point to 58% for the thirdfirst quarter andof 2017 compared to the first nine monthsquarter of 2016, compared to 99%driven by increases in the Programs, Healthcare and 96% for the third quarter and first nine months of last year. OneBeacon hadGovernment Risks businesses, mostly offset by decreases in several other lines. There was no net loss reserve development in either the thirdfirst quarter of 2016 and 2 points of net unfavorable loss reserve development in2017 or the first nine monthsquarter of 2016, while loss reserve development was not significant in the third quarter and first nine months of last year.2016. The expense ratio wasdecreased by one point to 37% for both the third quarter and first nine months of 2016, compared to 39% and 36% for the third quarter and first nine months of last year. The expense ratio for the third quarter of 2016 benefited from the impact of a $3 million reduction from the final settlement of OneBeacon’s qualified pension plan obligations. The increase in the expense ratio for the first nine monthsquarter of 20162017 compared to the first nine months of last year was primarily due to lower premium volume and changing business mix. The results for the first nine monthsquarter of 2016, also included a $16 million tax benefit related todriven by change in business mix and lower employee costs, which more than offset the settlementnegative impact of IRS examinations for tax years 2007-2012.
White Mountains’s totallower earned premiums. OneBeacon’s net written premiums increased 11%decreased 8% to $335 million in the third quarter of 2016 and decreased 3% to $896$257 million in the first nine months of 2016. In the third quarter of 2015, OneBeacon exited2017 compared to the first quarter of 2016, driven largely by decreases in its crop business, which reduced netPrograms, Entertainment and Healthcare businesses.
BAM posted its best quarter since inception for gross written premiums by $36 million and $9member surplus contributions and growth in claims-paying resources. Gross written premiums and member surplus contributions totaled $28 million in the thirdfirst quarter andof 2017, compared to $14 million in the first nine monthsquarter of 2015. Excluding the exited crop business, White Mountains's net2016. Total pricing (i.e., gross written premiums decreased 1% and 4%member surplus contributions weighted by the par value of bonds insured) was 119 basis points in the third quarter and first nine months of 2016 versus the comparable periods of 2015, reflecting persistent soft market conditions.
In the third quarter of 2016,2017, up from 62 basis points in the first quarter of 2016. BAM insured $3.0 billion of municipal bonds $2.7with par value of $2.4 billion of which were in the primary market.  Infirst quarter of 2017, compared to $2.2 billion in the first nine monthsquarter of 2016, BAM insured $8.5 billion of municipal bonds, $7.9 billion of which were in the primary market. As of September 30, 2016,2016. BAM’s total claims paying resources were $629increased $19 million on total par insured of $30.5 billion. Total claims paying resources increased $28to $662 million from December 31, 2015, reflecting positive cashflow. Inin the secondfirst quarter of 2016, Puerto Rico defaulted on more than $7002017, compared to an increase of $6 million to $607 million in the first quarter of general obligation bonds. BAM has no exposure to Puerto Rico, as its underwriting guidelines exclude insuring territorial debts.2016.
The GAAP total return on invested assets was 0.9%1.5% for both the thirdfirst quarter of 2016 compared to a return of -0.5% for2017 and the thirdfirst quarter of 2015.2016. The fixed income portfolio return for the thirdfirst quarter of 20162017 was just ahead of the longer duration Bloomberg Barclays U.S. Intermediate Aggregate Index. The portfolio of commonFixed income duration increased slightly during the quarter (from 2.6 years to 2.9 years) and credit quality remained strong.  Common equity securities returned 6.1% and high-yield investments returned 2.2%, which were in line with their respective indices, and other long-term investments (including high-yield fixed maturity investments) return forreturned 1.0%, primarily attributable to the third quarterimpact of 2016 was just behind the S&P 500 Index, primarily due tounconsolidated private capital investments, unfavorable performance from other long-term investments due to write downs to energy-exposed private equity funds, mostly offset by favorable performance of common equity securities in separate accounts managed by third party advisers and favorable mark-to marketmark-to-market adjustments to the OneBeacon surplus notes.

The GAAP total return on invested assets was 3.3% for the first nine months of 2016 compared to a return of -0.3% for the first nine months of 2015. The fixed income portfolio return for the first nine months of 2016 underperformed the Bloomberg Barclays U.S. Intermediate Aggregate Index, primarily due to the short duration positioning of the portfolio as interest rates declined over the course of the nine month period. The portfolio of common equity securitiesSurplus Notes and other long-term investments (including high-yield fixed maturity investments) return for the first nine months of 2016 underperformed the S&P 500 Index, primarily due to unfavorable performance in other long-term investments, partially offset by favorable mark-to market adjustments to the OneBeacon surplus notes. (Seecurrency hedges. See Summary of Investment Results on page 64).54.


Adjusted Book Value Per Share
The following table presents White Mountains’s adjusted book value per share and reconciles this non-GAAP measure to the most comparable GAAP measure. (SeeSee NON-GAAP FINANCIAL MEASURES on page 76).64.
 September 30, 2016 
June 30,
2016
 December 31, 2015 September 30, 2015 March 31, 2017 December 31, 2016 March 31, 2016
Book value per share numerators (in millions):    
    
      
White Mountains’s common shareholders’ equity $3,652.2
 $3,875.2
 $3,913.2
 $3,745.5
 $3,625.2
 $3,603.3
 $3,785.9
Equity in net unrealized (gains) Symetra’s fixed maturity portfolio, net of applicable taxes —
 —
 —
 (5.5)
Future proceeds from options (1)
 89.0
 89.0
 —
 —
 —
 29.7
 —
Adjusted book value per share numerator
 $3,741.2
 $3,964.2
 $3,913.2
 $3,740.0
 $3,625.2
 $3,633.0
 $3,785.9
Book value per share denominators (in thousands of shares):    
  
  
    
  
Common shares outstanding 4,578.7
 4,963.9
 5,623.7
 5,745.0
 4,572.8
 4,563.8
 5,415.5
Unearned restricted shares (31.8) (33.2) (25.0) (31.4) (34.7) (25.9) (41.1)
Options assumed issued (1)
 120.0
 120.0
 —
 —
 —
 40.0
 —
Adjusted book value per share denominator 4,666.9
 5,050.7
 5,598.7
 5,713.6
 4,538.1
 4,577.9
 5,374.4
Book value per share $797.65
 $780.67
 $695.84
 $651.97
 $792.77
 $789.53
 $699.10
Adjusted book value per share $801.66
 $784.90
 $698.95
 $654.58
 $798.83
 $793.58
 $704.45
Year-to-date dividends paid per share $1.00
 $1.00
 $1.00
 $1.00
 $1.00
 $1.00
 $1.00
(1) Adjusted book value per share at September 30, 2016 and June 30,December 31, 2016 includes the impact of 120,00040,000 non-qualified stock options exercisable for $742 per common share. Prior periods excludeAdjusted book value per share at March 31, 2016 excludes the non-qualified stock options, which were anti-dilutive to book value. All non-qualified options were exercised prior to their expiration date of January 20, 2017.

Goodwill and Other Intangible Assets
The following table is a summary of goodwill and other intangible assets that are included in White Mountains’s adjusted book value as of September 30, 2016,March 31, 2017, December 31, 2015,2016, and September 30, 2015:March 31, 2016:
Millions September 30, 2016 December 31, 2015 September 30, 2015 March 31, 2017 December 31, 2016 March 31, 2016
Goodwill            
MediaAlpha $18.3
 $18.3
 $18.3
 $18.3
 $18.3
 $18.3
Wobi 5.8
 5.8
 5.8
 5.8
 5.8
 5.8
Buzzmove 7.6
 7.6
 —
Total goodwill 24.1
 24.1
 24.1
 31.7
 31.7
 24.1
Other intangible assets            
MediaAlpha 20.7
 24.4
 26.4
 15.9
 18.3
 25.8
Wobi and other 14.5
 6.9
 7.5
 5.4
 5.9
 6.4
Total other intangible assets 35.2
 31.3
 33.9
 21.3
 24.2
 32.2
Total goodwill and other intangible assets (1)
 59.3
 55.4
 58.0
 53.0
 55.9
 56.3
Goodwill and other intangible assets held for sale 5.2
 331.9
 333.9
 —
 —
 325.4
Goodwill and other intangible assets attributed to non-controlling interests (19.0) (136.4) (138.1) (16.9) (17.6) (134.4)
Goodwill and other intangible assets included in book value $45.5
 $250.9
 $253.8
 $36.1
 $38.3
 $247.3
(1) See Note 6 - “Goodwill and Other Intangible Assets” for details of other intangible assets.

Review of Consolidated Results
 
White Mountains’s consolidated financial results for the three and nine months ended September 30,March 31, 2017 and 2016 and 2015 follow:
  Three Months Ended Nine Months Ended
  September 30, September 30,
Millions 2016 2015 2016 2015
Gross written premiums $363.9
 $370.9
 $984.0
 $1,086.4
Net written premiums $334.8
 $302.5
 $895.5
 $927.1
Revenues      
  
Earned insurance premiums $281.3
 $284.9
 $838.1
 $896.0
Net investment income 22.5
 16.8
 59.6
 42.6
Net realized and unrealized investment gains (losses) 26.4
 (43.9) 84.0
 (33.9)
Other revenue — other 34.8
 38.3
 110.8
 114.4
Total revenues 365.0
 296.1
 1,092.5
 1,019.1
Expenses      
  
Losses and LAE 165.0
 170.0
 508.1
 534.1
Insurance acquisition expenses 56.4
 55.3
 159.2
 166.1
Other underwriting expenses 49.6
 56.5
 156.0
 165.5
General and administrative expenses 67.2
 94.7
 221.0
 223.7
General and administrative expenses—intangible asset amortization 3.0
 2.6
 9.4
 7.9
Interest expense 3.8
 3.9
 12.4
 10.8
Total expenses 345.0
 383.0
 1,066.1
 1,108.1
Pre-tax income (loss) from continuing operations 20.0
 (86.9) 26.4
 (89.0)
Income benefit (expense) 6.7
 1.6
 22.4
 (.8)
Net income (loss) from continuing operations 26.7
 (85.3) 48.8
 (89.8)
Net gain on sale of Tranzact, net of tax 51.9
 —
 51.9
 —
Net (loss) gain on sale of Sirius Group, net of tax (4.0) —
 362.6
 —
Net gain on sale of other discontinued operations, net of tax —
 10.3
 —
 18.2
Net income (loss) from discontinued operations, net of tax 14.0
 (3.8) 7.1
 59.1
Equity in earnings of unconsolidated affiliates, net of tax —
 3.9
 —
 18.0
Net income (loss) 88.6
 (74.9) 470.4
 5.5
Net (income) loss attributable to non-controlling interests 3.1
 16.0
 (24.6) 24.2
Net income (loss) attributable to White Mountains’s common shareholders 91.7
 (58.9) 445.8
 29.7
Change in net unrealized gains (losses) from Symetra’s fixed
   maturity portfolio, net of tax
 —
 3.5
 —
 (29.4)
Change in foreign currency translation and pension liability, net of tax .2
 .1
 .3
 .3
Change in foreign currency translation and other from
    discontinued operations, net of tax
 —
 (18.5) 32.0
 (62.1)
Change in foreign currency translation and other from
sale of Sirius Group, net of tax		 —
 —
 113.3
 —
Comprehensive income (loss) 91.9
 (73.8) 591.4
 (61.5)
Comprehensive loss (income) attributable to non-controlling interests .1
 (.1) .1
 (.1)
Comprehensive income (loss) attributable to White Mountains’s
    common shareholders
 92.0
 (73.9) 591.5
 (61.6)
Change in net unrealized (losses) gains from Symetra’s fixed
   maturity portfolio, net of tax
 —
 (3.5) —
 29.4
Adjusted comprehensive income (loss) $92.0
 $(77.4) $591.5
 $(32.2)
  Three Months Ended
  March 31,
Millions 2017 2016
Gross written premiums $317.0
 $321.7
Net written premiums $277.2
 $289.1
Revenues    
Earned insurance premiums $264.8
 $282.1
Net investment income 26.1
 17.9
Net realized and unrealized investment gains 51.3
 29.5
Other revenue 43.7
 39.8
Total revenues 385.9
 369.3
Expenses    
Losses and LAE 151.7
 161.1
Insurance acquisition expenses 46.6
 52.7
Other underwriting expenses 51.8
 55.4
General and administrative expenses 91.3
 84.0
General and administrative expenses—intangible asset amortization 2.9
 3.1
Interest expense 3.7
 4.5
Total expenses 348.0
 360.8
Pre-tax income from continuing operations 37.9
 8.5
Income (expense) benefit (3.9) 9.7
Net income from continuing operations 34.0
 18.2
Net loss on sale of discontinued operations, net of tax (1.0) —
Net income from discontinued operations, net of tax —
 1.1
Net income 33.0
 19.3
Net loss (income) attributable to non-controlling interests 1.3
 (6.3)
Net income attributable to White Mountains’s common shareholders 34.3
 13.0
Change in foreign currency translation and pension liability, net of tax .9
 .1
Change in foreign currency translation and other from
    discontinued operations, net of tax
 —
 37.2
Comprehensive income attributable to White Mountains’s
    common shareholders
 $35.2
 $50.3
 

Consolidated Results - Three Months Ended September 30, 2016March 31, 2017 versus Three Months Ended September 30, 2015March 31, 2016
White Mountains’s total revenues increased 23%4% to $365$386 million in the thirdfirst quarter of 2016,2017, driven primarily by higher net realized and unrealized investment gains.returns. Earned insurance premiums decreased 1%6% to $281$265 million, mostly reflecting actions takendriven largely by risk-selection refinement in recent quarters to exit underperforming linesOneBeacon's Programs, Entertainment and accounts at OneBeacon. Healthcare businesses. Net realized and unrealized investment gains increased to $51 million in the first quarter of 2017, compared to $30 million in the first quarter of 2016. Net investment income was $26 million in the thirdfirst quarter of 20162017 compared to a loss of $44$18 million in the thirdfirst quarter of 2015. Net investment income was $23 million in the third quarter of 2016 compared to $17 million in the third quarter of 2015 primarily due to a higher fixed maturity asset base. (See2016. See Summary of Investment Results on page 64).54.
White Mountains’s total expenses decreased 10%4% to $345$348 million in the thirdfirst quarter of 2017.  Losses and LAE and other underwriting expenses decreased in line with earned premiums. There was no net loss reserve development in either the first quarter of 2017 or the first quarter of 2016. Losses and LAE decreased by 3% in the third quarter of 2016, primarily from lower business volume at OneBeacon. Insurance acquisition expenses increased 2% in the third quarter of 2016, primarily from amounts ceded in the third quarter of 2015 relateddecreased 12% due to OneBeacon's exit from its Crop Business. Other underwriting expenses decreased by 12%decrease in the third quarter of 2016, driven by a $3 million reduction from the final settlement of OneBeacon's qualified pension plan obligationspremium volume, change in business mix and lower business volume at OneBeacon. OneBeacon’s loss ratio decreased 1 point to 59% in the third quarter of 2016, driven by improved results in the Ocean Marine and Accident businesses in the third quarter of 2016 compared to the third quarter of 2015, partially offset by a reduction in the third quarter 2015 loss ratio from ceded loss and loss adjustment expenses related to the exit of the Crop Business that did not recur in the third quarter of 2016. OneBeacon’s expense ratio decreased 2 points to 37% in the third quarter of 2016, primarily due to a pre-tax gain of $3 million recorded in other underwriting expenses for the final settlement of OneBeacon's qualified pension plan obligations.employee costs. See OneBeacon on page 55.48.
General and administrative expenses decreased 29%increased 9% to $67$91 million in the thirdfirst quarter of 2016 as higher compensation expenses,2017, driven by the rising market price of White Mountains’s common shares during 2016, were more than offset by the impact from $36$14 million of incentiveadditional compensation expense recorded in the thirdfirst quarter of 20152017 related to the agreementsretirement of the Company’s former Chairman and CEO. Incentive compensation costs also reflect increases of 5% and 10% to sell Sirius GroupWhite Mountains’s common share market price during the first quarter of 2017 and Symetra.the first quarter of 2016.
White Mountains’s effective tax rate for the three months ended September 30, 2016March 31, 2017 was (33.5)%10.3%. White Mountains’s income tax benefit related to pre-tax income from continuing operations for the three months ended September 30, 2016March 31, 2017 was different from the U.S. statutory rate of 35% due to changes in forecasted earnings by jurisdiction used in determining interim tax expense. The rate was also impacted by a $14 million tax benefit recognized in continuing operations related to the reversal of a valuation allowance that resulted from income that was recognized within discontinued operations.

Consolidated Results - Nine Months EndedSeptember 30, 2016 versus Nine Months EndedSeptember 30, 2015
White Mountains’s total revenue increased 7% to $1,093 million in the first nine months of 2016, driven primarily by higher realized and unrealized investment gains and net investment income, partially offset by lower earned premiums. Net realized and unrealized investment gains increased to $84 million compared to a loss of $34 million in the first nine months of 2015. Net investment income was $60 million in the third quarter of 2016 compared to $43 million in the third quarter of 2015 primarily due to a higher fixed maturity asset base. (See Summary of Investment Results on page 64). Earned insurance premiums decreased by $58 million, or 6%, to $838 million, mostly reflecting actions taken in recent quarters to exit underperforming lines and accounts at OneBeacon.
White Mountains’s total expenses decreased 4% to $1,066 million in the first nine months of 2016.  Losses and LAE, insurance acquisition expenses and other underwriting expenses decreased by 5%, 4% and 6% in the first nine months of 2016, primarily from lower business volume at OneBeacon. OneBeacon’s loss ratio increased 1 point to 61% in the first nine months of 2016, primarily due to net unfavorable loss reserve development from its Healthcare and Programs businesses. OneBeacon’s expense ratio increased by 1 point to 37% compared to the first nine months of 2015, primarily from the adverse impact of lower business volume and increased commissions from changes in business mix that more than offset reduced salary and incentive compensation expense driven by headcount reductions. See OneBeacon on page 55.
General and administrative expenses decreased 1% to $221 million in the first nine months of 2016 driven by lower incentive compensation expenses.
White Mountains’s effective tax rate for the nine months ended September 30,first quarter of 2016 was (84.9)%. White Mountains’s income tax benefit related to pre-tax income from continuing operations for the nine months ended September 30, 2016 was different fromlower than the U.S. statutory rate of 35%, primarily due to a $13 million favorable settlement of the 2007-2009 IRS exam at OneBeacon. Future tax law changes that reduce the corporate tax rate would have an adverse effect on White Mountains's deferred tax assets. For example, a reduction in forecasted earningsthe U.S. federal income tax rate to between 20% and 15% would reduce the Company’s net deferred tax asset by jurisdiction used in determining interim tax expense. The rate was also impacted by $16$54 million from favorable settlements of OneBeacon's 2007-2009 and 2010-2012 IRS exams, and by a $14 million tax benefit recognized in continuing operations related to the reversal of a valuation allowance that resulted from income that was recognized within discontinued operations.

$72 million.


I. Summary of Operations By Segment
 
White Mountains conducts its operations through three segments: (1) OneBeacon, (2) HG Global/BAM and (3) Other Operations. While investment results are included in each segment, White Mountains manages the majority of its investments contained within the segments through its wholly-owned subsidiary, WM Advisors. Accordingly, a discussion of White Mountains’s consolidated investment operations is included after the discussion of operations by segment. White Mountains’s segment information is presented in Note 13 -— “Segment Information” to the Consolidated Financial Statements.
As a result of the Sirius Group and the Tranzact sales, the results of operations for Sirius Group and Tranzact have been classified as discontinued operations and are now presented separately, net of related income taxes, in the statement of comprehensive income. Prior year amounts have been reclassified to conform to the current period’s presentation. (SeeSee Note 17 -— “Held for Sale and Discontinued Operations”).
 
OneBeacon
 
Financial results and GAAP ratios for OneBeacon for the three and nine months ended September 30,March 31, 2017 and 2016 and 2015 follow:
 Three Months Ended Nine Months Ended Three Months Ended
 September 30, September 30, March 31,
Millions 2016 2015 2016 2015 2017 2016
Gross written premiums $351.6
 $358.8
 $948.1
 $1,053.0
 $297.3
 $310.5
Net written premiums $324.1
 $292.9
 $865.2
 $901.2
 $256.9
 $280.1
            
Earned insurance premiums $277.9
 $281.4
 $827.9
 $887.3
 $261.8
 $278.6
Net investment income 11.8
 12.4
 38.3
 33.0
 12.2
 14.4
Net realized and unrealized investment gains (losses) 15.5
 (29.9) 56.8
 (29.7)
Net realized and unrealized investment gains 15.0
 16.6
Other revenue 1.8
 3.9
 3.5
 (.4) 3.4
 .9
Total revenues 307.0
 267.8
 926.5
 890.2
 292.4
 310.5
Losses and LAE 162.8
 167.5
 501.3
 527.9
 150.6
 158.8
Insurance acquisition expenses 55.1
 53.8
 154.8
 161.2
 45.3
 51.0
Other underwriting expenses 49.4
 56.4
 155.6
 165.2
 51.7
 55.3
General and administrative expenses 3.2
 3.4
 10.0
 11.0
 4.7
 3.6
General and administrative expenses—intangible asset amortization .3
 .3
 .9
 1.0
 .3
 .3
Interest expense 3.3
 3.2
 9.8
 9.7
 3.3
 3.3
Total expenses 274.1
 284.6
 832.4
 876.0
 255.9
 272.3
Pre-tax income (loss) $32.9
 $(16.8) $94.1
 $14.2
Pre-tax income $36.5
 $38.2
            
GAAP ratios:            
Losses and LAE 59% 60% 61% 60% 58% 57%
Expense 37% 39% 37% 36% 37% 38%
Combined 96% 99% 98% 96% 95% 95%
 
The following table presents OneBeacon’s book value per share:
(Millions, except per share amounts) September 30, 2016 June 30, 2016 December 31, 2015 September 30, 2015 March 31, 2017 December 31, 2016 March 31, 2016
OneBeacon book value per share:      
  
    
  
OneBeacon’s common shareholders’ equity $1,031.7
 $1,022.2
 $1,000.9
 $1,000.4
 $1,033.4
 $1,021.3
 $1,016.6
OneBeacon common shares outstanding 94.3
 94.3
 95.1
 95.3
 94.7
 94.3
 94.3
OneBeacon book value per common share (1)
 $10.93
 $10.83
 $10.53
 $10.50
 $10.91
 $10.82
 $10.78
(1) OneBeacon declared and paid a regular quarterly dividend of $.21 per common share in each of the first three quartersquarter of 20162017 and each quarter during 2015.2016.

OneBeacon ended the thirdfirst quarter of 20162017 with a book value per share of $10.93,$10.91, an increase of 2.9% and 10.0%2.8% for the third quarter, and first nine months of 2016, including dividends. The increase in book value for the first nine months of 2016 included a $16 million tax benefit related to the settlement of IRS examinations for tax years 2007-2012.


OneBeacon Results—Three Months Ended September 30, 2016March 31, 2017 versus Three Months Ended September 30, 2015March 31, 2016
OneBeacon’s GAAP combined ratio was 96%95% for the thirdfirst quarter of 2017 and the first quarter of 2016. The loss ratio increased by one point to 58% for the first quarter of 2017 compared to the first quarter of 2016, compared to 99% for the third quarter of 2015. The loss ratio decreased by 1 point to 59% in the third quarter of 2016 compared to the third quarter of last year, driven by improved resultsincreased losses in the Ocean MarineOneBeacon's Programs, Healthcare and AccidentGovernment Risks businesses, in the third quarter of 2016 compared to the third quarter of last year, partiallymostly offset by a reductiondecreases in the third quarter 2015several other lines. There was no net loss ratio from ceded loss and loss adjustment expenses related to the exit of the Crop Business that did not recur in the third quarter of 2016 (see "Crop Exit" below). Loss reserve development was not significant in either the thirdfirst quarter of 20162017 or the thirdfirst quarter of 2015.2016. The expense ratio decreased by 2 pointsone point to 37% infor the thirdfirst quarter of 2017 compared to the first quarter of 2016, compared to the third quarter of 2015, driven by a pre-tax gain of $3 million recordedchange in other underwriting expenses forbusiness mix and lower employee costs, which more than offset the final settlement of OneBeacon's qualified pension plan obligations. The expense ratio was also lower for the third quarter of 2016 compared to last year due to lower salary expense from headcount reductions, partially offset by thenegative impact of lower premium volume and changing business mix. In addition, the expense ratio for the third quarter of 2015 was adversely impacted from ceding earned premiums in connection with the exit of the Crop Business.premiums.
OneBeacon’s net written premiums increased 11%decreased 8% to $324$257 million in the thirdfirst quarter of 2016. In2017 compared to the thirdfirst quarter of 2015, OneBeacon exited2016, driven largely by risk-selection refinement in its crop business, which reducedPrograms ($16 million), Entertainment ($10 million) and Healthcare ($4 million) businesses. Excluding those businesses, net written premiums by $36 million inincreased 3% for the thirdfirst quarter of 2015. Excluding the exited crop business, net written premiums decreased 1% in the third quarter of 2016 compared to the third quarter of 2015, primarily due to reduced written premiums in OneBeacon’s Programs ($9 million) and Entertainment ($8 million) businesses mostly offset by growth in many of OneBeacon's other lines of business.2017.
Reinsurance protection.  OneBeacon purchases reinsurance in order to minimize loss from large risks or catastrophic events. OneBeacon also purchases individual property reinsurance coverage for certain risks to reduce large loss volatility through property-per-risk excess of loss reinsurance programs and individual risk facultative reinsurance. OneBeacon also maintains excess of loss casualty reinsurance programs that provide protection for individual risks or catastrophe losses involving workers’ compensation, general liability, automobile liability, professional liability or umbrella liability. The availability and cost of reinsurance protection is subject to market conditions, which are outside of management’s control. Limiting risk of loss through reinsurance arrangements serves to mitigate the impact of large losses; however, the cost of this protection in an individual period may exceed the benefit.
OneBeacon’s net combined ratio was higher than the gross combined ratio by 36 points and 11 points for the thirdfirst quarter of 2017 and 2016 as a result of the cost of the reinsurance programs more than offsetting the benefits from ceded losses. OneBeacon's net combined ratio forIn the thirdfirst quarter of 2015 was lower than2016, Crop business reduced the gross combined ratio, by 7 pointsbut had no effect on the net combined ratio, as a result100% of Crop results were ceded under the impact in the quarter of entering into the 100% quota share reinsurance agreement relatedthat OneBeacon entered into on July 31, 2015 pursuant to its exit of the Crop Business.

OneBeacon Results—Nine Months Ended September 30, 2016 versus Nine Months Ended September 30, 2015
OneBeacon’s GAAP combined ratio was 98% forbusiness. Excluding the first nine monthseffects of 2016 compared to 96% for the first nine months of 2015. The loss ratio increased 1 point to 61% due to the net unfavorable loss reserve development related to OneBeacon’s HealthcareCrop business described below, as well as the Other Professional Lines and Programs businesses, partially offset by favorable loss reserve development in its Technology, Accident and Financial Services businesses. Loss reserve development was not significant in the first nine months of 2015. The expense ratio increased by 1 point to 37% compared to the first nine months of 2015, primarily from the adverse impact of lower business volume and increased commissions from changes in business mix that more than offset reduced salary and incentive compensation expense driven by headcount reductions.
Second quarter unfavorable loss reserve development. During the second quarter of 2016, OneBeacon recognized $20 million of unfavorable loss reserve development and also increased the current accident year provision related to its Healthcare business. Paid and incurred activity in the second quarter for extended care facilities coverage within OneBeacon's Healthcare business increased above expectations and above what was experienced inon the first quarter of 2016. Extended care facilities coverage provides liability insurance for assisted living, memory care and continuing care facilities, among others. In addition, there were two large claims from the managed care errors and omissions coverage within OneBeacon's Healthcare business that contributed to the adverse loss reserve development.
OneBeacon’s net written premiums decreased 4% to $865 million in the first nine months of 2016. During 2015, OneBeacon exited its crop business, which reduced net written premiums by $9 million in the first nine months of 2015. Excluding the exited crop business, net written premiums decreased 5% in the first nine months of 2016 compared to the first nine months of 2015, primarily due to reduced written premiums in OneBeacon’s Programs ($20 million), Healthcare ($17 million) and Entertainment ($17 million) businesses.

Reinsurance protection.  combined ratio, OneBeacon’s net combined ratio was higher than the gross combined ratio by 45 points, for the first nine months of 2016 and 1 point for the first nine months of 2015. In both periods, the net combined ratio was higher than the gross combined ratio as a result ofprimarily from the cost of theOneBeacon’s reinsurance programs more than offsetting the benefits from ceded losses.
In the first nine months of 2016, OneBeacon also completed the termination of its qualified pension plan, fully eliminating the associated liabilities from its balance sheet, and recognized after-tax income of $2 million. (See Note 19 - “OneBeacon Pension Plan”).
Crop Exit. On July 31, 2015, OneBeacon exited its multiple peril crop insurance (“MPCI”) and its related crop-hail business (collectively, “Crop Business”) as its exclusive managing general agency, Climate Crop Insurance Agency (“CCIA”), exited the business through a sale of the agency to an affiliate of AmTrust Financial Services, Inc. (“AmTrust”). AmTrust reinsured OneBeacon’s remaining net Crop Business exposure for the 2015 reinsurance year. As a result of this transaction, OneBeacon has no material net exposure related to the Crop Business. For the three months ended September 30, 2015, OneBeacon recorded ceded written premiums of $36 million, ceded earned premiums of $17 million, ceded loss and loss adjustment expenses of $15 million and ceded insurance acquisition expenses of $3 million as a result of the transaction. OneBeacon also received a payment of $3 million in connection with the termination of its agreement with CCIA, which has been recorded in other revenue.programs.

HG Global/BAM

The following table presents the components of pre-tax income included in White Mountains’s HG Global/BAM segment related to the consolidation of HG Global, which includes HG Re and its other wholly-owned subsidiaries, and BAM for the three and nine months ended September 30, 2016March 31, 2017 and 20152016:
 Three Months Ended September 30, 2016 Three Months Ended March 31, 2017
Millions HG Global BAM Eliminations Total HG Global BAM Eliminations Total
Gross written premiums $—
 $9.2
 $—
 $9.2
 $—
 $18.7
 $—
 $18.7
Assumed (ceded) written premiums 6.2
 (6.2) —
 —
 12.6
 (12.6) —
 —
Net written premiums $6.2
 $3.0
 $—
 $9.2
 $12.6
 $6.1
 $—
 $18.7
                
Earned insurance premiums $1.2
 $.3
 $—
 $1.5
 $1.5
 $.5
 $—
 $2.0
Net investment income .6
 1.7
 —
 2.3
 .6
 2.0
 —
 2.6
Net investment income - BAM Surplus Notes 4.5
 —
 (4.5) —
 4.8
 —
 (4.8) —
Net realized and unrealized investment losses (.3) (1.6) —
 (1.9) .3
 1.0
 —
 1.3
Other revenue —
 .4
 —
 .4
 —
 .4
 —
 .4
Total revenues 6.0
 .8
 (4.5) 2.3
 7.2
 3.9
 (4.8) 6.3
Insurance acquisition expenses .2
 .6
 —
 .8
 .3
 .9
 —
 1.2
Other underwriting expenses —
 .1
 —
 .1
 —
 .1
 —
 .1
General and administrative expenses .6
 9.3
 —
 9.9
 .3
 10.3
 —
 10.6
Interest expense—BAM Surplus Notes
 —
 4.5
 (4.5) —
Interest expense - BAM Surplus Notes —
 4.8
 (4.8) —
Total expenses .8
 14.5
 (4.5) 10.8
 .6
 16.1
 (4.8) 11.9
Pre-tax income (loss) $5.2
 $(13.7) $—
 $(8.5) $6.6
 $(12.2) $—
 $(5.6)
Supplemental information:                
Member Surplus Contributions (1)
 $—
 $11.5
 $—
 $11.5
 $—
 $9.6
 $—
 $9.6

  Three Months Ended September 30, 2015
Millions HG Global BAM Eliminations Total
Gross written premiums $—
 $7.0
 $—
 $7.0
Assumed (ceded) written premiums 5.2
 (5.2) —
 —
Net written premiums $5.2
 $1.8
 $—
 $7.0
         
Earned insurance premiums $.6
 $.3
 $—
 $.9
Net investment income .5
 1.1
 —
 1.6
Net investment income - BAM Surplus Notes 4.0
 —
 (4.0) —
Net realized and unrealized investment gains .6
 1.7
 —
 2.3
Other revenue —
 .2
 —
 .2
Total revenues 5.7
 3.3
 (4.0) 5.0
Insurance acquisition expenses .1
 .4
 —
 .5
Other underwriting expenses —
 .1
 —
 .1
General and administrative expenses .4
 9.4
 —
 9.8
Interest expense—BAM Surplus Notes
 —
 4.0
 (4.0) —
Total expenses .5
 13.9
 (4.0) 10.4
Pre-tax income (loss) $5.2
 $(10.6) $—
 $(5.4)
Supplemental information:        
     Member Surplus Contributions (1)
 $—
 $8.8
 $—
 $8.8

  Nine Months Ended September 30, 2016
Millions HG Global BAM Eliminations Total
Gross written premiums $—
 $24.9
 $—
 $24.9
Assumed (ceded) written premiums 18.0
 (18.0) —
 —
Net written premiums $18.0
 $6.9
 $—
 $24.9
         
Earned insurance premiums $3.1
 $1.0
 $—
 $4.1
Net investment income 1.6
 5.1
 —
 6.7
Net investment income - BAM Surplus Notes 13.4
 —
 (13.4) —
Net realized and unrealized investment gains 2.3
 6.5
 —
 8.8
Other revenue —
 .8
 —
 .8
Total revenues 20.4
 13.4
 (13.4) 20.4
Insurance acquisition expenses .6
 1.9
 —
 2.5
Other underwriting expenses —
 .3
 —
 .3
General and administrative expenses 1.4
 28.1
 —
 29.5
Interest expense—BAM Surplus Notes
 —
 13.4
 (13.4) —
Total expenses 2.0
 43.7
 (13.4) 32.3
Pre-tax income (loss) $18.4
 $(30.3) $—
 $(11.9)
Supplemental information:        
     Member Surplus Contributions (1)
 $—
 $28.2
 $—
 $28.2

 Nine Months Ended September 30, 2015 Three Months Ended March 31, 2016
Millions HG Global BAM Eliminations Total HG Global BAM Eliminations Total
Gross written premiums $—
 $17.8
 $—
 $17.8
 $—
 $6.8
 $—
 $6.8
Assumed (ceded) written premiums 13.3
 (13.3) —
 —
 5.1
 (5.1) —
 —
Net written premiums $13.3
 $4.5
 $—
 $17.8
 $5.1
 $1.7
 $—
 $6.8
                
Earned insurance premiums $1.7
 $.6
 $—
 $2.3
 $.9
 $.3
 $—
 $1.2
Net investment income 1.4
 2.9
 —
 4.3
 .5
 1.6
 —
 2.1
Net investment income - BAM Surplus Notes 11.9
 —
 (11.9) —
 4.5
 —
 (4.5) —
Net realized and unrealized investment gains .3
 2.8
 —
 3.1
 2.1
 4.9
 —
 7.0
Other revenue —
 .5
 —
 .5
 —
 .1
 —
 .1
Total revenues 15.3
 6.8
 (11.9) 10.2
 8.0
 6.9
 (4.5) 10.4
Insurance acquisition expenses .3
 1.8
 —
 2.1
 .2
 .7
 —
 .9
Other underwriting expenses —
 .3
 —
 .3
 —
 .1
 —
 .1
General and administrative expenses 1.2
 26.3
 —
 27.5
 .5
 9.2
 —
 9.7
Interest expense—BAM Surplus Notes
 —
 11.9
 (11.9) —
Interest expense - BAM Surplus Notes —
 4.5
 (4.5) —
Total expenses 1.5
 40.3
 (11.9) 29.9
 .7
 14.5
 (4.5) 10.7
Pre-tax income (loss) $13.8
 $(33.5) $—
 $(19.7) $7.3
 $(7.6) $—
 $(.3)
Supplemental information:                
Member Surplus Contributions (1)
 $—
 $20.3
 $—
 $20.3
��Member Surplus Contributions (1)
 $—
 $6.7
 $—
 $6.7
(1) Member Surplus Contributions are recorded directly to BAM's equity, which is recorded as non-controlling interest on White Mountains's balance sheet.

HG Global/BAM Results—Three Months Ended September 30, 2016March 31, 2017 versus Three Months Ended September 30, 2015March 31, 2016
BAM is a mutual insurance company whose affairs are managed on a statutory accounting basis, and it does not report stand-alone GAAP financial results. BAM is owned by its members. Eachmembers, the municipalities that purchase BAM’s insurance for their debt issuances. BAM charges an insurance premium on each municipal bond insurance policy it insures. A portion of the premium is a Member Surplus Contribution, which is contributed to BAM’s qualified statutory capital and conveys to the issuer insured bycertain interests in BAM, becomes a “member” of BAM.including the right to receive dividends in the future, subject to regulatory approval. The cost of policies issued by BAMremainder is comprised of a risk premium, which is recorded as gross written premiums, and a contribution to BAM’s qualified statutory capital (a “Member Surplus Contribution”).premiums.
In the thirdfirst quarter of 2016,2017, BAM insured $3.0$2.4 billion of municipal bonds, $2.7$2.0 billion of which were in the primary market, compared to $2.2 billion of municipal bonds, $2.0$2.1 billion of which were in the primary market, insured in the thirdfirst quarter of 2015. The average total premium (including both risk2016. Gross written premiums and Member Surplus Contributions)member surplus contributions totaled $28 million for the first quarter of 2017, compared to $14 million for the first quarter of 2016. Total pricing (i.e., gross written premiums and member surplus contributions weighted by insuredthe par value of insurance provided by BAMbonds insured) was 119 basis points in the primary markets in the thirdfirst quarter of 2016 was 64 basis points,2017, up from 62 basis points in the thirdfirst quarter of 2015. Gross written premiums2016.
HG Global reported GAAP pre-tax income of $7 million in the first quarter of 2017 and Member Surplus Contributions totaled $21 millionthe first quarter of 2016. Results for the thirdfirst quarter of 2017 and the first quarter of 2016 compared to $16were both driven by $5 million forof interest income on the third quarterBAM Surplus Notes. The variable rate was 3.78% and 3.54% as of 2015.March 31, 2017 andDecember 31, 2016.
As a mutual insurance company that is owned by its members, BAM’s results do not affect White Mountains’s book value per share and adjusted book value per share. However, White Mountains is required to consolidate BAM’s results in its GAAP financial statements and its results are attributed to non-controlling interests.
HG Global reported GAAP pre-tax income of $5 million in both the third quarter of 2016 and the third quarter of last year. Results for the third quarter of 2016 were driven by $5 million of interest income on the BAM Surplus Notes. The interest income on the BAM Surplus Notes was $4 million in the third quarter of 2015. The variable rate was set at 3.54% and 3.15% as of September 3 White Mou0, 2016 and December 31, 2015.ntains reported
White Mountains reported $14 mi$12 millionllion of GAAP pre-tax loss from BAM in the thirdfirst quarter of 2016,2017, compared to $11$8 million in the thirdfirst quarter of 2015.2016. The increase was primarily due to lower investment results. Results for the thirdfirst quarter of 2016 were driven by2017 include $5 million of interest expense on the BAM Surplus Notes and $9$10 million of operating expenses, compared to $45 million interest expense and $9 million of operating expenses in the thirdfirst quarter of 2015. The increase in pre-tax loss in the third quarter of 2016 was primarily due to lower investment results.2016. BAM’s statutory net loss was $8$9 million in both the third quarter of 2016 and the third quarter of last year.


HG Global/BAM Results—Nine Months Ended September 30, 2016 versus Nine Months Ended September 30, 2015
In the first nine months of 2016, BAM insured $8.5 billion of municipal bonds, $7.9 billion of which were in the primary market, compared to $7.8 billion of municipal bonds, $7.3 billion of which were in the primary market, insured in the first nine months of 2015. The average total premium (including both risk premiums and Member Surplus Contributions), weighted by insured par, of insurance provided by BAM in the primary markets in the first nine months of 2016 was 59 basis points, up from 44 basis points in the first nine months of 2015. Gross written premiums and Member Surplus Contributions totaled $53 million for the first nine months of 2016, compared to $38 million for the first nine months of 2015.
HG Global reported GAAP pre-tax income of $18$8 million in the first nine monthsquarter of 2016, compared to $14 million in the first nine months of 2015. Results for the first nine months of 2016 were driven by $13 million of interest income on the BAM Surplus Notes, compared to $12 million of interest income in the first nine months of 2015. The increase in the interest income is due to the increase in the variable rate of the BAM Surplus Notes which is set annually. The variable rate was set at 3.54% and 3.15% as of September 30, 2016 and December 31, 2015. The increase in pre-tax income in the first nine months of 2016 compared to prior year was primarily due to higher realized and unrealized investment gains and higher earned premiums.
White Mountains reported $30 million of GAAP pre-tax loss from BAM in the first nine months of 2016, compared to $34 million in the first nine months of 2015. Results for the first nine months of 2016 were driven by $13 million of interest expense on the BAM Surplus Notes and $28 million of operating expenses, compared to $12 million interest expense and $26 million of operating expenses in the first nine months of 2015. The decrease in pre-tax loss in the first nine months of 2016 compared to prior year was primarily due to higher net investment income and higher realized and unrealized investment gains partially offset by higher general and administrative expenses. BAM’s statutory net loss was $24 million in both the first nine months of 20162017 and the first nine monthsquarter of 2015.2016.
BAM’s “claims-paying“claims paying resources” represent the capital and other financial resources BAM has available to pay claims and, as such, is a key indication of BAM’s financial strength. BAM’s claims-paying resources include BAM’s qualified statutory capital, including Member Surplus Contributions,member surplus contributions, net unearned premiums, contingency reserves, present value of future installment premiums and the first loss reinsurance protection provided by HG Re, which is collateralized and held in trusts. BAM expects Member Surplus Contributions and HG Re’s reinsurance protection to be the primary drivers of continued growth of its claims-paying resources.
As of September 30, 2016,March 31, 2017, BAM’s claims paying resources increased 5%3% to $629$662 million from December 31, 2015.2016. The increase was primarily driven by $28 million of Member Surplus Contributions and a $18$12 million increase in the HG Re collateral trusts and $10 million of member surplus contributions, partially offset by BAM’s first nine monthsquarter of 20162017 statutory net loss of $24$9 million.

The following table presents BAM’s total claims paying resources as of September 30, 2016March 31, 2017 and December 31, 2015:2016:
Millions As of
September 30, 2016		 As of
December 31, 2015		 March 31, 2017 December 31, 2016
Policyholders’ surplus $432.8
 $437.2
 $429.2
 $431.5
Contingency reserve 19.9
 12.4
 25.5
 22.7
Qualified statutory capital 452.7
 449.6
 454.7
 454.2
Net unearned premiums 18.8
 12.5
 29.2
 23.2
Present value of future installment premiums 3.3
 2.6
 3.3
 3.3
Collateral trusts 154.2
 136.6
 175.0
 163.0
Claims paying resources $629.0
 $601.3
 $662.2
 $643.7

As of September 30, 2015, BAM’sMarch 31, 2016, BAM's claims paying resources increased 2%1% to $593$607 million from December 31, 2014.2015. The increase was primarily driven by $20$7 million of Member Surplus Contributions and a $12$6 million increase in the HG Re collateral trusts, partially offset by BAM’sBAM's first ninethree months of 20152016 statutory net loss of $24$8 million. The following table presents BAM’s total claims paying resources as of September 30, 2015March 31, 2016 and December 31, 2014:2015:
Millions As of
September 30, 2015		 As of
December 31, 2014		 March 31, 2016 December 31, 2015
Policyholders’ surplus $438.6
 $448.7
 $433.4
 $437.2
Contingency reserve 10.1
 4.7
 14.8
 12.4
Qualified statutory capital 448.7
 453.4
 448.2
 449.6
Net unearned premiums 10.6
 6.4
 14.0
 12.5
Present value of future installment premiums 1.8
 1.4
 2.7
 2.6
Collateral trusts 131.5
 120.0
 142.2
 136.6
Claims paying resources $592.6
 $581.2
 $607.1
 $601.3

The following table presents amounts from HG Global, which includes HG Re and its other wholly-owned subsidiaries, and BAM that are contained within White Mountains’s consolidated balance sheet as of September 30, 2016March 31, 2017 and December 31, 2015:2016:
 As of September 30, 2016 March 31, 2017
Millions HG Global BAM Eliminations and Segment Adjustment Total HG Global BAM Eliminations and Segment Adjustment Total
Assets                
Fixed maturity investments $139.4
 $426.8
 $—
 $566.2
 $155.3
 $447.8
 $—
 $603.1
Short-term investments 17.3
 52.2
 —
 69.5
 18.6
 43.5
 —
 62.1
Total investments 156.7
 479.0
 —
 635.7
 173.9
 491.3
 —
 665.2
Cash 2.1
 17.5
 —
 19.6
 1.4
 10.5
 —
 11.9
BAM Surplus Notes 503.0
 —
 (503.0) —
 503.0
 —
 (503.0) —
Accrued interest receivable on BAM Surplus Notes 103.6
 —
 (103.6) —
 112.8
 —
 (112.8) —
Other assets 11.6
 38.7
 (1.0) 49.3
 13.5
 9.6
 (1.0) 22.1
Total assets $777.0
 $535.2
 $(607.6) $704.6
 $804.6
 $511.4
 $(616.8) $699.2
                
Liabilities                
BAM Surplus Notes(1)
 $—
 $503.0
 $(503.0) $—
 $—
 $503.0
 $(503.0) $—
Accrued interest payable on BAM Surplus Notes(2)
 —
 103.6
 (103.6) —
 —
 112.8
 (112.8) —
Preferred dividends payable to White Mountains’s subsidiaries(3)
 168.7
 —
 —
 168.7
 191.9
 —
 —
 191.9
Preferred dividends payable to non-controlling interests 5.6
 —
 —
 5.6
 6.4
 —
 —
 6.4
Other liabilities 55.2
 67.5
 (1.0) 121.7
 72.4
 48.6
 (1.0) 120.0
Total liabilities 229.5
 674.1
 (607.6) 296.0
 270.7
 664.4
 (616.8) 318.3
                
Equity                
White Mountains’s common shareholders’ equity 530.7
 —
 —
 530.7
 517.4
 —
 —
 517.4
Non-controlling interests 16.8
 (138.9) —
 (122.1) 16.5
 (153.0) —
 (136.5)
Total equity 547.5
 (138.9) —
 408.6
 533.9
 (153.0) —
 380.9
Total liabilities and equity $777.0
 $535.2
 $(607.6) $704.6
 $804.6
 $511.4
 $(616.8) $699.2

 As of December 31, 2015 December 31, 2016
Millions HG Global BAM Eliminations and Segment Adjustment Total Segment HG Global BAM Eliminations and Segment Adjustment Total Segment
Assets                
Fixed maturity investments $130.6
 $417.0
 $—
 $547.6
 $155.2
 $430.0
 $—
 $585.2
Short-term investments 5.6
 43.3
 —
 48.9
 6.4
 38.1
 —
 44.5
Total investments 136.2
 460.3
 —
 596.5
 161.6
 468.1
 —
 629.7
Cash .1
 15.8
 —
 15.9
 1.9
 25.1
 —
 27.0
BAM Surplus Notes 503.0
 —
 (503.0) —
 503.0
 —
 (503.0) —
Accrued interest receivable on BAM Surplus Notes 90.2
 —
 (90.2) —
 108.0
 —
 (108.0) —
Other assets 9.5
 26.8
 (.8) 35.5
 12.5
 39.9
 (1.0) 51.4
Total assets $739.0
 $502.9
 $(594.0) $647.9
 $787.0
 $533.1
 $(612.0) $708.1
Liabilities                
BAM Surplus Notes(1)
 $—
 $503.0
 $(503.0) $—
 $—
 $503.0
 $(503.0) $—
Accrued interest payable on BAM Surplus Notes(2)
 —
 90.2
 (90.2) —
 —
 108.0
 (108.0) —
Preferred dividends payable to White Mountains’s subsidiaries(3)
 135.4
 —
 —
 135.4
 180.5
 —
 —
 180.5
Preferred dividends payable to non-controlling interests 4.3
 —
 —
 4.3
 5.7
 —
 —
 5.7
Other liabilities 41.5
 49.7
 (.8) 90.4
 61.4
 73.0
 (1.0) 133.4
Total liabilities 181.2
 642.9
 (594.0) 230.1
 247.6
 684.0
 (612.0) 319.6
Equity                
White Mountains’s common shareholders’ equity 540.7
 —
 —
 540.7
 522.8
 —
 —
 522.8
Non-controlling interests 17.1
 (140.0) —
 (122.9) 16.6
 (150.9) —
 (134.3)
Total equity 557.8
 (140.0) —
 417.8
 539.4
 (150.9) —
 388.5
Total liabilities and equity $739.0
 $502.9
 $(594.0) $647.9
 $787.0
 $533.1
 $(612.0) $708.1
(1) 
Under GAAP, the BAM Surplus Notes are classified as debt by the issuer. Under U.S. Statutory accounting, they are classified as Surplus.
(2) 
Under GAAP, interest accrues daily on the BAM Surplus Notes. Under U.S. Statutory accounting, interest is not accrued on the BAM Surplus Notes until it has been approved for payment by insurance regulators.
(3) 
Dividends on HG Global preferred shares payable to White Mountains's subsidiaries are eliminated in White Mountains's consolidated financial statements.

The following table presentsPeriodically, BAM publishes the gross par value of policies priced and closed by BAMduring the period while amounts recorded for accounting purposes are based on the gross par value of policies issued. The following table reconciles the gross par value of policies issued to the gross par value of policies priced for the three and nine months ended September 30, 2016March 31, 2017 and 2015:2016:
  Three Months Ended Nine Months Ended
  September 30, September 30,
Millions 2016 2015 2016 2015
Gross par value of primary market policies priced $2,291.3
 $2,228.6
 $8,020.7
 $7,760.3
Gross par value of secondary market policies priced 249.0
 298.3
 600.6
 481.6
Total gross par value of market policies priced 2,540.3
 2,526.9
 8,621.3
 8,241.9
         
Less: Gross par value of policies priced yet to close (428.8) (762.6) (428.8) (762.7)
Gross par value of policies closed that were previously priced 861.8
 469.2
 298.6
 379.6
Total gross par value of market policies closed $2,973.3
 $2,233.5
 $8,491.1
 $7,858.8
  Three Months Ended
  March 31,
Millions 2017 2016
Gross par value of primary market policies issued $2,041.0
 $2,096.8
Gross par value of secondary market policies issued 338.1
 81.8
Total gross par value of policies issued 2,379.1
 2,178.6
     
Gross par value of policies priced yet to close 328.3
 724.5
     Less: Gross par value of policies closed that were previously priced (353.3) (298.6)
Total gross par value of policies priced $2,354.1
 $2,604.5


Other Operations

A summary of White Mountains’s financial results from its Other Operations segment for the three and nine months ended September 30, 2016March 31, 2017 and 20152016 follows:
 Three Months Ended Nine Months Ended Three Months Ended
 September 30, September 30, March 31,
Millions 2016 2015 2016 2015 2017 2016
Earned insurance premiums $1.9
 $2.6
 $6.1
 $6.4
 $1.0
 $2.3
Net investment income 8.4
 2.8
 14.6
 5.3
 11.3
 1.4
Net realized and unrealized investment gains (losses) 12.8
 (16.3) 18.4
 (7.3)
Other revenue 32.6
 34.2
 106.5
 114.3
Net realized and unrealized investment gains 35.0
 5.9
Other revenue—MediaAlpha 32.5
 32.7
Other revenue—Other 7.4
 6.1
Total revenues 55.7
 23.3
 145.6
 118.7
 87.2
 48.4
Loss and loss adjustment expenses 2.2
 2.5
 6.8
 6.2
 1.1
 2.3
Insurance acquisition expenses .5
 1.0
 1.9
 2.8
 .1
 .8
Other underwriting expenses .1
 —
 .1
 —
General and administrative expenses 54.1
 81.5
 181.5
 185.2
General and administrative expenses—MediaAlpha 30.9
 30.5
General and administrative expenses—Other 45.1
 40.2
General and administrative expenses—amortization of intangible assets 2.7
 2.3
 8.5
 6.9
 2.6
 2.8
Interest expense .5
 .7
 2.6
 1.1
 .4
 1.2
Total expenses 60.1
 88.0
 201.4
 202.2
 80.2
 77.8
Pre-tax loss $(4.4) $(64.7) $(55.8) $(83.5)
Pre-tax income (loss) $7.0
 $(29.4)

Other Operations Results—Three Months Ended September 30, 2016March 31, 2017 versus Three Months Ended September 30, 2015March 31, 2016
White Mountains’s Other Operations segment reported pre-tax lossincome of $4$7 million in the thirdfirst quarter of 2016,2017, compared to $65pre-tax loss of $29 million in the thirdfirst quarter of 2015.2016. The lower pre-tax loss for the third quarter of 2016 wasimproved resultswere driven by improvedhigher investment results and lower incentive compensation expenses.returns, mostly due to a larger invested asset base resulting from the proceeds of the sale of Sirius Group. White Mountains’s Other Operations segment reported $13$35 million of net realized and unrealized investment gains in the thirdfirst quarter of 20162017 compared to net realized and unrealized investment lossesgains of $166 million in the thfirstird quarter of 2015.2016. White Mountains’s Other Operations segment reported $8$11 million of net investment income in the thirdfirst quarter of 20162017 compared to net investment income of $3$1 million in the thfirstird quarter of 2015, driven by improved investment results combined with a higher investable asset base resulting primarily from the sale of Sirius Group. (See2016. See Summary of Investment Results on page 64). General54. White Mountains’s Other Operations segment other revenues included $33 million from MediaAlpha in both the first quarter of 2017 and the first quarter of 2016. White Mountains’s Other Operations segment general and administrative expenses decreasedincluded $31 million from MediaAlpha in both the first quarter of 2017 and the first quarter of 2016. White Mountains’s Other Operations segment general and administrative expenses increased $5 million in the thirdfirst quarter of 2017 compared to the first quarter of 2016, compared to the third quarter of last year, as higher compensation expenses driven by the rising market price of White Mountains’s common shares during 2016 were more than offset by the impact from $36$14 million of incentiveadditional compensation expense recorded in the thirdfirst quarter of 20152017 related to the agreements to sell Sirius Groupretirement of the Company’s former Chairman and Symetra.


Other Operations Results—Nine Months Ended September 30, 2016 versus Nine Months Ended September 30, 2015
White Mountains’s Other Operations segment reported pre-tax loss of $56 millionCEO, which was partially offset by higher incentive compensation costs in the first nine months of 2016, compared to $84 million in the first nine months of 2015. The lower pre-tax loss for the first nine months of 2016 was driven by improved investment results and lower incentive compensation expenses. White Mountains’s Other Operations segment reported net realized and unrealized investment gains of $18 million in the first nine months of 2016 compared to net realized and unrealized investment losses of $7 million in the first nine months of 2015. White Mountains’s Other Operations segment reported $15 million of net investment income in the first nine months of 2016 compared to net investment income of $5 million in the first nine months of 2015, driven by improved investment results combined with a higher investable asset base resulting primarily from the sale of Sirius Group. (See Summary of Investment Results on page 64). The decrease in other revenue was driven by a $20 million transaction gain from the sale of Hamer LLC recognized in the second quarter of 2015 that did not recur in the second quarter of 2016. General and administrative expenses decreased in the third quarter of 2016 compared tofrom a larger increase in the third quarter of last year, as higher compensation expenses driven by the rising market price of White Mountains's common shares during 2016 were more than offset by the impact from $36 million of incentive compensation expense recorded in the third quarter of 2015 related to the agreements to sell Sirius Group and Symetra.
WM Life Re reported pre-tax loss of $2 million in the first nine monthsquarter of 2016 compared to $4 million of losses in the first nine monthsquarter of 2015. WM Life Re has completed its run-off as all2017. Incentive compensation costs reflect increases of its contracts matured as of June 30, 2016.
During the nine months ended September 30, 2016, White Mountains wrote down its investment in Star & Shield surplus notes, which reduced book value per share by approximately $4. White Mountains consolidates the issuer of the surplus notes, Star & Shield Insurance Exchange. As a result, the impact of the write down is eliminated in pre-tax income. However, the write down resulted in a $21 million decrease5% and 10% to White Mountains’s book valuecommon share market price during the first quarter of 2017 and a corresponding increase to non-controlling interest equity.the first quarter of 2016.


Discontinued Operations

Sirius Group
On April 18, 2016, White Mountains completed the sale of Sirius Group to CMI for approximately $2.6 billion. $161.8 million of this amount was used to purchase certain assets to be retained by White Mountains out of Sirius Group, including shares of OneBeacon. The amount paid at closing was based on an estimate ofCMI. Sirius Group’s results inured to White
Mountains until the closing date tangible common shareholder’s equity. Inof the second quarter oftransaction. For the three months ended March, 31, 2016, White Mountains reported a $480 million increase to book valueSirius Group’s combined ratio of 93% and adjusted book value per share (based on 5.357 million shares outstanding at April 18, 2016)comprehensive income from discontinued operations of $36 million. See Note 17 — “Held for Sale and Discontinued Operations”. In the third quarter of

Tranzact Sale
On July 21, 2016, White Mountains recorded a $4.0 million reduction tocompleted the gain from sale of Sirius Group in discontinued operations as a resultTranzact to an affiliate of the final true-up of Sirius Group's closing date tangible common shareholder's equity. (See Note 2 - “Significant Transactions”).Clayton, Dubilier & Rice, LLC.
As a result of the transaction, Sirius Group’s results have been reported as discontinued operations within White Mountains’s GAAP financial statements. Sirius Group’sTranzact's results inured to White Mountains until the closing date of the transaction. (SeeFor the three months ended March 31, 2016, White Mountains reported Tranzact’s net loss from discontinued operations of $2 million. See Note 17 -— “Held for Sale and Discontinued Operations”).

Tranzact Sale
On June 9, 2016, White Mountains announced that it had entered into a definitive agreement for the sale of Tranzact to an affiliate of Clayton, Dubilier & Rice, LLC. On July 21, 2016, White Mountains completed the sale of Tranzact and received net proceeds of $221 million. In the third quarter of 2016 White Mountains reported an $82.1 million increase to book value and adjusted book value ($16 per share based on 5.028 million shares outstanding at July 21, 2016) from the sale of Tranzact recorded in the third quarter of 2016. (See Note 2 - “Significant Transactions”).
As a result of the transaction, Tranzact's results have been reported as discontinued operations. For the three and nine months ended September 30, 2016 White Mountains reported Tranzact's net loss from discontinued operations of $2 million and $3 million. For the three and nine months ended September 30, 2015 White Mountains reported Tranzact's net loss from discontinued operations of $8 million and $14 million. As of December 31, 2015, Tranzact’s assets and liabilities were reported as held for sale within White Mountains’s GAAP financial statements.

Esurance
White Mountains recognized $10 million and $18 million net gain on sale of discontinued operations during the three and nine months ended September 30, 2015, which primarily related to an installment payment from Allstate for the favorable development on loss reserves. (See Note 18 - “Contingencies”).


II. Summary of Investment Results
 
White Mountains’s total operations investment results include continuing operations and discontinued operations. During the thirdfirst quarter of 2015, White Mountains signed a definitivean agreement to sell Sirius Group, which closed on April 18, 2016. Sirius Group’s results inured to White Mountains through the closing date of the transaction.
During the third quarter of 2016, White Mountains established a portfolio of high-yield fixed maturity investments. Given the risk profile of these investments, White Mountains’s management believes thatMountains has included the returns associated with the high-yield fixed maturity investments are more appropriately included with the returns from common equity securities and other long-term investments instead of with returns associated with short-term investments and investment grade fixed maturity investments. See ““NON-GAAP FINANCIAL MEASURES”MEASURES” on page 76.64.
For purposes of discussing rates of return, all percentages are presented gross of management fees and trading expenses in order to produce a better comparison to benchmark returns, while all dollar amounts are presented net of management fees and trading expenses.  A summary of White Mountains’s consolidated total operations’ pre-tax investment results, including returns from discontinued operations, for the three and nine months ended September 30,March 31, 2017 and 2016 and 2015 follows:  

Gross investment returns and benchmark returns
  Three Months Ended Nine Months Ended
  September 30, September 30,
  2016 2015 2016 2015
Short-term investments 0.1% (0.3)% 0.7% (0.8)%
Investment grade fixed maturity investments 0.4% 0.4 % 3.1% 0.6 %
High-yield fixed maturity investments 1.0% N/A
 1.0% N/A
Total GAAP fixed income investments: 0.4% 0.3 % 2.9% 0.4 %
Total fixed income investments, excluding high-yield fixed maturity investments:        
  In U.S. dollars 0.4% 0.3 % 2.9% 0.4 %
  In local currencies 0.4% 0.5 % 2.6% 1.2 %
Bloomberg Barclays U.S. Intermediate Aggregate Index 0.3% 1.1 % 4.1% 1.7 %
         
Common equity securities 4.9% (6.9)% 5.2% (2.8)%
Other long-term investments 2.6% (1.8)% 6.4% (5.3)%
Total GAAP common equity securities and other long-term investments: 3.9% (5.1)% 5.6% (4.0)%
Total common equity securities, other long-term investments and high-yield fixed maturity investments:        
  In U.S. dollars 3.5% (5.1)% 5.4% (4.0)%
  In local currencies 3.5% (5.1)% 5.1% (3.8)%
S&P 500 Index (total return) 3.9% (6.4)% 7.8% (5.3)%
         
Total consolidated portfolio:     

 

  In U.S. dollars 0.9% (0.5)% 3.3% (0.3)%
  In local currencies 0.9% (0.4)% 3.1% 0.4 %
  Three Months Ended
  March 31,
  2017 2016
Short-term investments 0.1% 0.5%
Investment grade fixed maturity investments 0.9% 1.6%
High-yield fixed maturity investments 2.2% N/A
Total GAAP fixed income investments(1)
 0.9% 1.5%
Bloomberg Barclays U.S. Intermediate Aggregate Index 0.7% 2.3%
     
Common equity securities 6.1% 2.0%
Other long-term investments 1.0% 0.2%
Total GAAP common equity securities and other long-term investments 4.2% 1.5%
Total common equity securities, other long-term investments and high-yield fixed maturity investments 3.7% 1.5%
S&P 500 Index (total return) 6.1% 1.3%
Bloomberg Barclays U.S. High Yield Ba 2% Issuer Capped (minus Energy & Financials) 2.0% N/A
     
Total consolidated portfolio 1.5% 1.5%
(1) The impact of excluding high-yield fixed maturity investments from the GAAP fixed maturity investment returns was insignificant in the first quarter of 2017.

 

Investment Returns—Three and Nine Months Ended September 30, 2016March 31, 2017 versus Three and Nine Months Ended September 30, 2015March 31, 2016
White Mountains’s GAAP pre-tax total return on invested assets was 0.9%1.5% for both the first quarter of 2017 and 3.3% for the thirdfirst quarter and first nine months of 2016, which included 0.2% from foreign currency gains2016. The returns for the first nine months of 2016. Foreign currency did not meaningfully impact the third quarter of 2016. White Mountains’s GAAP pre-tax total return on invested assets was -0.5% and -0.3% for2017 were driven primarily by the thirdcontinuing post election equity market rally while the first quarter and first nine months of 2015, which included -0.1% and -0.7% from foreign currency losses, respectively.

2016 returns were boosted by falling interest rates.

Fixed income results
White Mountains maintains a high-quality, short-duration fixed income portfolio. As of September 30, 2016,March 31, 2017, the fixed income portfolio duration, including short-term investments but excluding high-yield fixed maturity investments, was approximately 2.02.9 years, compared to 2.22.6 years as of December 31, 20152016 and 2.12.0 years as of September 30, 2015.March 31, 2016. Including both short-term and high-yield fixed maturity investments, duration was approximately 2.23.0 years as of September 30, 2016.March 31, 2017.
Excluding high-yield fixed maturity investments,The increase in the duration of the fixed income portfolio from the comparative periods was primarily a result of establishing a new medium duration British Pound Sterling (GBP) investment grade corporate bond mandate with Legal & General Investment Management, Ltd. (“LGIM”), a third party registered investment adviser. The duration of the LGIM portfolio was approximately 7.3 years as of March 31, 2017. White Mountains has entered into foreign currency forward contracts to manage its GBP foreign currency exposure relating to this mandate. As of March 31, 2017, these contracts had a total gross notional value of approximately $247 million (GBP 200 million).
The fixed income portfolio returned 0.4% and 2.9%0.9% for the thirdfirst quarter and first nine months of 2016,2017, outperforming the longer duration Bloomberg Barclays U.S. Intermediate Aggregate Index return of 0.3%0.7%. The fixed income portfolio returned 1.5% for the thirdfirst quarter of 2016, and underperforming the longer duration Bloomberg Barclays U.S. Intermediate Aggregate Index return of 4.1% for the first nine months of 2016. The underperformance relative to the benchmark for the first nine months of 2016 was primarily attributable to the short duration positioning of the portfolio as interest rates declined over the course of the nine month period. The fixed income portfolio returned 0.3% and 0.4% for the third quarter and first nine months of 2015, underperforming the Bloomberg Barclays U.S. Intermediate Aggregate Index return of 1.1% and 1.7% for the comparable periods as interest rates declined in both periods.2.3%.

Common equity securities, other long-term investments, and high-yield fixed maturity investments results
White Mountains maintains a portfolio of common equity securities, other long-term investments including hedge funds, private equity funds, direct investments in privately held common and convertible securities and the OneBeacon surplus notes, and high-yield fixed maturity investments. White Mountains’s management believes that prudent levels of investments in common equity securities, other long-term investments and high-yield fixed maturity investments are likely to enhance long-term after-tax total returns.
White Mountains’s portfolio of common equity securities, other long-term investments and high-yield fixed maturity investments represented approximately 19%23%, 23%20%, and 15%14% of total GAAP invested assets as of September 30, 2016,March 31, 2017, December 31, 2015,2016, and September 30, 2015.March 31, 2016.
TheWhite Mountains’s portfolio of common equity securities, other long-term investments and high-yield fixed maturity investments returned 3.5% and 5.4%3.7% for the thirdfirst quarter and first nine months of 2016. These results underperformed2017, underperforming the S&P 500 Index returnsreturn of 3.9% and 7.8% for the comparable periods.6.1%. The underperformance relative toversus the S&P 500 Index for the third quarter and first nine months of 2016return was primarily attributable to (i) asset allocation, as high-yield fixed maturity investments did not keep pace with common equity securities for the quarter, and (ii) unfavorable performance in other long-term investments, which were impacted by write-downs in energy-exposedprimarily attributable to the impact of unconsolidated private equity funds, partially offset by favorablecapital investments, unfavorable mark-to-market adjustments to the OneBeacon surplus notes. TheSurplus Notes and currency hedges.
White Mountains’s portfolio of common equity securities other long-term investmentsprimarily consists of passive ETFs and high-yield fixed maturity investmentspublicly-traded common equity securities that are actively managed by third party registered investment advisers. White Mountains’s portfolio of common equity securities and ETFs returned -5.1% and -4.0%6.1% for the thirdfirst quarter and first nine months of 2015, outperforming2017, in line with the S&P 500 Index return of -6.4% and -5.3% for the comparable periods. 6.1%.
The outperformance for the third quarterportfolio of 2015 was primarily due to the impact of other long-term investments, which tend to outperform indices in a down equity market, while the outperformance for the first nine months of 2015 was driven by favorable publicly traded common equity securities results during the first half of 2015.
White Mountains has established relationships with third party registered investment advisers to manage publicly-traded common equity securities and convertibles. The largest of these relationships have been with Prospector Partners LLC (“Prospector”), Lateef Investment Management (“Lateef”) and Silchester International Investors (“Silchester”). During the second quarter of 2015, White Mountains instructed Prospector to liquidate its separate account portfolios and redeemed its investments in the hedge funds managed by Prospector and reallocated a portion of the proceeds into passive equity investment vehicles (ETFs). White Mountains has since terminated its investment management agreements with Prospector.  White Mountains continues to have publicly-traded common equity securities actively managed by Lateef and Silchester.
White Mountains invests in ETFs that seekseeks to provide investment results that, before expenses, generally correspond to the performance of the S&P 500, Russell 1000 and Russell 1000 Value Indices.broad market indices. As of September 30, 2016March 31, 2017 and December 31, 2015,2016, White Mountains had $113.2$385 million and $355.8$322 million invested in ETFs, respectively. The following summarizes White Mountains’s investments in ETFs by exposure to each index:

Millions Total Total
Index September 30, 2016 December 31, 2015
S&P 500 $113.2
 $297.3
Russell 1000 Value —
 40.8
Russell 1000 —
 17.7
Total $113.2
 $355.8

During the thirdfirst quarter of 2017 and first nine months of 2016, and 2015, the ETFs essentially earned the effective index return, before expenses, over the period in which White Mountains was invested in each respective fund.these funds.

TheWhite Mountains’s third party registered investment adviser relationships have been with Silchester International Investors (“Silchester”), who invests in value-oriented non-U.S. equity securities through an open-ended unit trust and Lateef separate account isInvestment Management (“Lateef”), a growth at a reasonable price adviser managing a highly concentrated portfolio of mid-cap and large-cap growth companies. Lateef isDuring the first quarter of 2017, White Mountains established a growth atnew relationship with Lazard Asset Management (“Lazard”), to manage a reasonable price manager focused on investing in high return businesses at reasonable valuations. Lateef uses a bottom up, fundamental research-driven investment process that is focused on absolute returns, low turnover and a long-term investment horizon. As a highly concentratedPan-European common equity portfolio, of approximately 20 positions, relative performance towhich the S&P 500 Index return is often driven, positively or negatively, by individual positions, especiallymajority of the securities are denominated in the short-term.Euros (EUR). The Lateef separate accountactively managed portfolio of common equity securities returned 5.0% and 2.6%6.9% for the thirdfirst quarter and first nine months of 2016,2017, outperforming the S&P 500 Index return of 3.9%6.1%. The actively managed portfolio of common equity securities returned 1.0% for the thirdfirst quarter of 2016, and underperforminglagging the S&P 500 Index return of 7.8% for1.3%.
In the first nine months of 2016. The Lateef separate account returned -7.5% and -3.8% for the third quarter and first nine months of 2015, underperforming the S&P 500 Index return of -6.4% for the third quarter of 2015 and outperforming the S&P 500 Index return of -5.3% for the first nine months of 2015.
2017, White Mountains has an investment inentered into a foreign currency forward contract to manage the Calleva Trust, an open-ended unit trust established as an Undertaking for Collective Investment in Transferable Securities (“UCITS”) underbulk of its foreign currency exposure associated with the European Communities Regulations that iscommon equity portfolio managed by Silchester. Silchester invests primarily in value-oriented non-U.S. equity securities. Silchester’s investment strategy focuses on companies with low market multiplesLazard. As of earnings, cash flow, assetMarch 31, 2017, the contract had a total gross notional value or dividends. In U.S. dollars, the Silchester portfolio returned 6.7% and 5.5% for the third quarter and first nine months of 2016, outperforming the S&P 500 Index returns of 3.9% for the quarter and underperforming the S&P 500 Index return of 7.8% for the first nine months of 2016. In local currencies, the Silchester portfolio returned 6.5% and 1.7% for the third quarter and first nine months of 2016, outperforming the MCSI EAFE Index return of 6.0% and -1.6% for the comparable periods. In U.S. dollars, the Silchester portfolio returned -9.6% and -1.9% for the third quarter and first nine months of 2015, underperforming the S&P 500 Index return of -6.4% for the third quarter of 2015 and outperforming the S&P 500 Index return of -5.3% for the first nine months of 2015. In local currencies, the Silchester portfolio returned -8.0% and 1.9% for the third quarter and first nine months of 2015, outperforming the MCSI EAFE Index returns of -9.0% and -1.0% for the comparable periods.approximately $53 million (EUR 50 million).
White Mountains maintains a portfolio of other long-term investments that consists primarily of hedge funds, private equity funds, directunconsolidated private capital investments, in privately held common and convertible securities, the OneBeacon surplus notes,Surplus Notes, and various other investments in limited partnerships.investments. As of September 30, 2016,March 31, 2017, approximately 42%44% of these other long-term investments were invested in private equity funds with a general emphasis on narrow, sector-focused funds,investments, and hedge funds with a general emphasis on long-short equity funds.equities.

White Mountains’s other long-term investments portfolio returned 2.6% and 6.4%1.0% for the thirdfirst quarter and first nine months of 2016, underperforming the S&P 500 Index returns of 3.9% and 7.8% and outperforming the HFRX Equal Weighted Strategies Index returns of 2.3% and 2.5%2017.  The results for the comparable periods. The portfolio’s mixed results versusfirst quarter of 2017 were primarily attributable to the benchmarksimpact of unconsolidated private capital investments, unfavorable mark-to-market adjustments to the OneBeacon Surplus Notes and currency hedges. White Mountains’s other long-term investments returned 0.2% for the thirdfirst quarter andof 2016.  The return for the first nine monthsquarter of 2016 was primarily attributable to write-downs in energy-exposedfavorable results from the OneBeacon Surplus Notes, partially offset by unfavorable results from private equity funds and favorable mark-to-market adjustments to the OneBeacon surplus notes resulting primarily from changes in credit spreads. White Mountains’s other long-term investments returned -1.8% and -5.3% for the third quarter and first nine months of 2015, outperforming the S&P 500 Index return of -6.4% and the HFRX Equal Weighted Strategies Index return of -2.4% for the third quarter of 2015 but underperforming the HFRX Equal Weighted Strategies Index return of -0.9% for the first nine months of 2015. The portfolio’s outperformance relative to the HRFX Equal Weighted Strategies Index return for the third quarter of 2015 was primarily attributable to improved results in certain private equity funds. The portfolio’s underperformance relative to the benchmark returns for the first nine months of 2015 was primarily due to White Mountains’s investment in TaClaro Holdings B.V., which wrote-off $7 million relating to its underlying investment in TaCerto.com, as well as unfavorable results from a long/short credit and distressed hedge fund and certain energy exposed private equity funds.
During the third quarter of 2016, White Mountains established a new relationship with Principal Global Investors, LLC (“Principal”), a third party registered investment adviser, to manage a relatively concentrated portfolio of high-yield fixed maturity investments. The Principal separate account is invested in issuers of U.S. dollar denominated publicly traded and 144A debt securities issued by corporations with generally at least one rating between "B-" and “BB+” inclusive by Standard and Poor's or similar ratings from other rating agencies. The fair value of the high-yield fixed maturity investments was approximately $215 million as of September 30, 2016. From its inception in late July through the end of the third quarter of 2016, the high-yield fixed maturity investments returned 1.0%,2.2% for the first quarter of 2017, outperforming the S&P 500Bloomberg Barclays U.S. High Yield Ba 2% Issuer Capped (minus Energy & Financials) Index return of 0.5% over the comparable period.2.0%.

Foreign Currency Translation
As of March 31, 2017, White Mountains has foreign currency exchange rate risk on approximately $423 million of net assets: cash and fixed income securities denominated in GBP managed by LGIM, cash and common equity securities denominated in Euros and other currencies managed by Lazard, common equity securities managed by Silchester, Wobi and various other consolidated and unconsolidated private capital investments.
White Mountains entered into foreign currency forward contracts to economically hedge the GBP and Euro foreign currency exposure for the invested assets managed by LGIM and Lazard. The majorityfollowing table summarizes the fair value of the foreign denominated assets for these mandates as well as the gross notional amount and fair value of the foreign currency forward contracts:
$ in millions   Fair Value of Investment Portfolio Fair Value of Foreign Currency Forward Contract Gross Notional Value of Foreign Currency Forward Contract
Investment Mandate Currency (in USD) (in USD) (Local Currency) (in USD)
LGIM GBP $252.3
 $250.3
 GBP200.0
 $247.2
Lazard EUR 56.0
 53.7
 EUR50.0
 52.7
  Total$308.3
 $304.0
  Total$299.9

At March 31, 2017, White Mountains’s exposure tonet foreign currency exchange rate risk was eliminated when Sirius Group was sold to CMI on April 18, 2016. Asnet assets of September 30, 2016, White Mountains’s remaining net foreign currency exchange rate risk is approximately $100 million and relates to Wobi, equity securities managed by Silchester and certain other long-term investments.

$119 million.

Investment in Symetra Common Shares
During the thirdfirst quarter of 2015, Symetra announced that it entered into a definitive merger agreement with Sumitomo Life Insurance Company (“Sumitomo Life”) pursuant to which Sumitomo Life would acquire all of the outstanding shares of Symetra. Following the announcement and Symetra shareholders’ November 5, 2015 meeting to approve the transaction, White Mountains relinquished its representation on Symetra’s board of directors. As a result, White Mountains changed its accounting for Symetra common shares from the equity method to fair value. The carrying value per Symetra share used in the calculation of White Mountains’s adjusted book value per share was $31.77 at December 31, 2015. On February 1, 2016, Symetra closed its definitive merger agreement with Sumitomo Life and White Mountains received proceeds of $658 million, or $32 per common share. White Mountains recognized $4.7$5 million in pre-tax net investment gains associated with Symetra during the first nine monthsquarter of 2016. White Mountains also received a special dividend of $.50 per share as part of the transaction that was paid in the third quarter of 2015.


LIQUIDITY AND CAPITAL RESOURCES
 
Recent Developments
On April 18, 2016, White Mountains completed the sale of Sirius Group to CMI for approximately $2.6 billion. $162 million of this amount was used to purchase certain assets to be retained by White Mountains out of Sirius Group, including shares of OneBeacon. In April 2016, subsequent to the closing of the Sirius Group sale, White Mountains used $150 million of the proceeds to repay the balance outstanding under the WTM Bank Facility.
On July 21, 2016, White Mountains completed the sale of Tranzact Holdings, LLC to an affiliate of Clayton, Dubilier & Rice, LLC and received net proceeds of $221 million.
Through the first ten months of 2016, White Mountains repurchased 1,094,795 of its common shares for $878 million.
As of October 31, 2016, White Mountains had approximately $1.8 billion of undeployed capital. Going forward, White Mountains expects to gradually return capital to shareholders while exploring new investment opportunities.

Operating Cash and Short-term Investments

Holding company level. The primary sources of cash for the Company and certain of its intermediate holding company subsidiariescompanies are expected to be distributions and tax sharing payments received from its insurance and other operating subsidiaries, capital raising activities, net investment income, proceeds from sales and maturities of investments and, from time to time, proceeds from the sales of operating subsidiaries. The primary uses of cash are expected to be repurchases of the Company’s common shares, payments on and repurchases/retirements of its debt obligations, dividend payments to holders of the Company’s common shares, to non-controlling interest holders of OneBeacon Ltd.’s common shares, anddistributions to non-controlling interest holders of other consolidated subsidiaries, purchases of investments, payments to tax authorities, contributions to operating subsidiaries, operating expenses and, from time to time, purchases of operating subsidiaries.
Operating subsidiary level. The primary sources of cash for White Mountains’s insurance and other operating subsidiaries are expected to be premium and fee collections, net investment income, proceeds from sales and maturities of investments, contributions from holding companies, capital raising activities and, from time to time, proceeds from the sales of operating subsidiaries. The primary uses of cash are expected to be claim payments, policy acquisition costs, purchases of investments, payments on and repurchases/retirements of its debt obligations, distributions and tax sharing payments made to holding companies, distributions to non-controlling interest holders, operating expenses and, from time to time, purchases of operating subsidiaries.
Both internal and external forces influence White Mountains’s financial condition, results of operations and cash flows. Claim settlements, premium levels and investment returns may be impacted by changing rates of inflation and other economic conditions. In many cases, significant periods of time, sometimes several years or more, may lapse between the occurrence of an insured loss, the reporting of the loss to White Mountains and the settlement of the liability for that loss. The exact timing of the payment of claims and benefits cannot be predicted with certainty. White Mountains’s insurance operating subsidiaries maintain portfolios of invested assets with varying maturities and a substantial amount of cash and short-term investments to provide adequate liquidity for the payment of claims.
Management believes that White Mountains’s cash balances, cash flows from operations, routine sales and maturities of investments and the liquidity provided by the WTM Bank Facility, the OneBeacon Bank Facility and revolving credit facilities of other consolidated subsidiaries are adequate to meet expected cash requirements for the foreseeable future on both a holding company and insurance and other operating subsidiary level.


Dividend Capacity

Under the insurance laws of the states and jurisdictions that White Mountains’s insurance operating subsidiaries are domiciled, an insurer is restricted with respect to the timing and the amount of dividends it may pay without prior approval by regulatory authorities. Accordingly, there can be no assurance regarding the amount of such dividends that may be paid by such subsidiaries in the future. Following is a description of the dividend capacity of White Mountains’s insurance and operating subsidiaries:
 
OneBeacon:
OneBeacon’s top-tier regulated U.S. insurance operating subsidiary, Atlantic Specialty Insurance Company (“ASIC”), has the ability to pay dividends to its immediate parent without the prior approval of regulatory authorities in an amount set by formula based on the lesser of (i) adjusted net investment income, as defined by statute, or (ii) 10% of statutory surplus, in both cases as most recently reported to regulatory authorities, subject to the availability of earned surplus. Based upon the formula above, most recently calculated as of June 30,December 31, 2016, ASIC currently has the ability to pay $6$11 million of dividends without the prior approval of regulatory authorities. ASIC did not pay any dividends duringWhen taking into consideration the third quarterrolling 12-month portion of 2016this statutorily-defined calculation, including adjusted net investment income and paid $27 millionthe timing of dividends paid, OneBeacon anticipated that ASIC would have the ability to pay dividends of approximately $30 million during 2017. ASIC paid a $30 million dividend to its immediate parent during the first nine months of 2016.on April 27, 2017. As of June 30,December 31, 2016, ASIC had $604$625 million of statutory surplus and $43$69 million of earned surplus.
During 2016,In 2017, Split Rock has the ability to distribute statutory capital without the prior approval of the Bermuda Monetary Authority (the “BMA”), provided it does not reduce its total statutory capital, as shown in the previous year's statutory financial statements, by 15% or more.
In addition, Split Rock has the ability to pay dividends or make distributions without the prior approvalnotification of regulatory authorities of up to 25% of its previous financial year’s total statutory capital and surplus, subject to meeting all appropriate liquidity and solvency requirements as specified in the Insurance Act of up to $37 million, which is equal to 15%1978 and the Companies Act of its December 31, 2015 statutory capital and surplus.1981. As of December 31, 2015,2016, Split Rock had $250$210 million of statutory capital and surplus. During$60 million of statutory surplus for total statutory capital and surplus of $270 million.

Based upon the first nine months of 2016,limitations described above, Split Rock paid $25currently has the ability to distribute up to $32 million of statutory capital and pay up to $60 million of dividends to its immediate parent.during 2017 without the prior approval of regulatory authorities. Split Rock did not pay any dividends or distributions during the first quarter of 2017.
During the first nine monthsquarter of 2016,2017, OneBeacon’s unregulated insurance operating subsidiaries paid $5 million of dividends to their immediate parent. As of September 30, 2016,March 31, 2017, OneBeacon’s unregulated insurance operating subsidiaries had $63$60 million of net unrestricted cash, short-term investments and fixed maturity investments and $72$70 million of other long-term investments, consisting of the OneBeacon Surplus Notes.
During the first nine monthsquarter of 2016,2017, OneBeacon Ltd. paid $59$20 million of regular quarterly dividends to its common shareholders. White Mountains received $45$15 million of these dividends.
As of September 30, 2016,March 31, 2017, OneBeacon Ltd. and its intermediate holding company subsidiariescompanies had $90$44 million of net unrestricted cash, short-term investments and fixed maturity investments and $12$13 million of common equity securities outside of its regulated and unregulated insurance operating subsidiaries.

HG Global/BAM:
At September 30, 2016,March 31, 2017, HG Global had $619 million face value of preferred shares outstanding, of which White Mountains owned 96.9%. Holders of the HG Global preferred shares receive cumulative dividends at a fixed annual rate of 6.0% on a quarterly basis, when and if declared by HG Global. HG Global did not declare or pay any preferred dividends in the first nine monthsquarter of 2016.2017. As of September 30, 2016March 31, 2017, HG Global has accrued $174$198 million of dividends payable to holders of its preferred shares, $169$192 million of which is payable to White Mountains and eliminated in consolidation.
HG Re is a Special Purpose Insurer subject to regulation and supervision by the BMA, but does not require regulatory approval to pay dividends. However, HG Re’s dividend capacity is limited byto amounts held inoutside of the collateral trusts pursuant to the first loss reinsurance treaty (“FLRT”) with BAM. As of December 31, 2015,2016, HG Re had statutory capital and surplus of $461$467 million, of which $54 million primarily relates to accrued interest on the BAM Surplus Notes held by HG Re, and $402$465 million was held as collateral in the Supplemental Trustcollateral trusts pursuant to the FLRT with BAM.

Effective January 1, 2014, HG Global and BAM agreed to change the interest rate on the BAM Surplus Notes for the five years ending December 31, 2018 from a fixed rate of 8%8.0% to a variable rate equal to the one-year U.S. treasury rate plus 300 basis points, set annually, which is 3.54%3.78% for 2016.2017. Prior to the end of 2018, BAM has the option to extend the variable rate period for an additional three years.  At the end of the variable rate period, the interest rate will be fixed at the higher of the then current variable rate or 8%8.0%.  BAM is required to seek regulatory approval to pay interest and principal on its surplus notes only when adequate capital resources have accumulated beyond BAM’s initial capitalization and a level that continues to support its outstanding obligations, business plan and ratings. BAM did not pay any interest on the BAM Surplus Notes during the first quarter of 2017.

Other Operations:
During the first nine monthsquarter of 2016, White Mountains contributed $15 million to WM Advisors. During the first nine months of 2016,2017, WM Advisors did not pay any dividends to its immediate parent. AtAs of September 30, 2016March 31, 2017, WM Advisors had $18$11 million of net unrestricted cash, short-term investments and fixed maturity investments.
During the first nine monthsquarter of 2016,2017, White Mountains paid a $5 million common share dividend. AtAs of September 30, 2016March 31, 2017, the Company and its intermediate holding company subsidiariescompanies had $1,747$1,507 million of net unrestricted cash, short-term investments and fixed maturity investments, $236$402 million of common equity securities and $80$85 million of other long-term investments included in its Other Operations segment.

Insurance Float

Insurance float is an important aspect of White Mountains’s insurance operations. Insurance float represents funds that an insurance or reinsurance company holds for a limited time. In an insurance or reinsurance operation, float arises because premiums are collected before losses are paid. This interval can extend over many years. During that time, the insurer or reinsurer invests the funds. When the premiums that an insurer or reinsurer collects do not cover the losses and expenses it eventually must pay, the result is an underwriting loss, which can be considered as the cost of insurance float.  One manner to calculate insurance float is to take insurance liabilities and subtract insurance assets. Although insurance float can be calculated using numbers determined under GAAP, insurance float is not a GAAP concept and, therefore, there is no comparable GAAP measure.
Insurance float can increase in a number of ways, including through acquisitions of insurance and reinsurance operations, organic growth in existing insurance and reinsurance operations and recognition of losses that do not immediately cause a corresponding reduction in investment assets.  Conversely, insurance float can decrease in a number of other ways, including sales of insurance and reinsurance operations, shrinking or runoff of existing insurance and reinsurance operations, the acquisition of operations that do not have substantial investment assets (e.g., an agency) and the recognition of gains that do not cause a corresponding increase in investment assets.  It is White Mountains’s intention to generate low-cost float over time through a combination of acquisitions and organic growth in its existing insurance and reinsurance operations. However, White Mountains seeks to increase book value per share,overall profitability, which sometimes reduces insurance float, such as in the sale of Sirius Group and the OneBeacon Runoff Transaction.sale.

Certain operational leverage metrics can be measured with ratios that are calculated using insurance float.  There are many activities that do not change the amount of insurance float at an insurance or reinsurance company but can have a significant impact on the company’s operational leverage metrics.  For example, investment gains and losses, foreign currency gains and losses, debt issuances and repurchases/retirements, common and preferred share issuances and repurchases and dividends paid to shareholders are all activities that do not change insurance float but that can meaningfully impact operational leverage metrics that are calculated using insurance float.

The following table illustrates White Mountains’s consolidated insurance float position as of September 30, 2016March 31, 2017 and December 31, 2015:2016:
 September 30, 2016 December 31, 2015
($ in millions)Continuing Operations Discontinued Operations Total Continuing Operations Discontinued Operations Total
Loss and LAE reserves$1,362.0
 $6.0
 $1,368.0
 $1,389.8
 $1,650.4
 $3,040.2
Unearned insurance and reinsurance premiums674.1
 1.6
 675.7
 610.5
 344.3
 954.8
Ceded reinsurance payable28.2
 (.5) 27.7
 29.9
 67.8
 97.7
Funds held under insurance and reinsurance contracts156.2
 —
 156.2
 137.8
 53.0
 190.8
Deferred tax on safety reserve (1)
—
 —
 —
 —
 279.2
 279.2
Insurance liabilities2,220.5
 7.1
 2,227.6
 2,168.0
 2,394.7
 4,562.7
            
Cash in regulated insurance and reinsurance subsidiaries$68.2
 $—
 $68.2
 $43.9
 $129.2
 $173.1
Reinsurance recoverable on paid and unpaid losses185.8
 .6
 186.4
 193.5
 293.8
 487.3
Insurance and reinsurance premiums receivable264.6
 2.0
 266.6
 220.3
 326.6
 546.9
Funds held by ceding entities—
 —
 —
 —
 90.6
 90.6
Deferred acquisition costs109.6
 —
 109.6
 107.6
 74.6
 182.2
Ceded unearned insurance and reinsurance premiums35.1
 —
 35.1
 29.5
 87.7
 117.2
Insurance assets663.3
 2.6
 665.9
 594.8
 1,002.5
 1,597.3
            
Insurance float$1,557.2
 $4.5
 $1,561.7
 $1,573.2
 $1,392.2
 $2,965.4
Insurance float as a multiple of total capital0.4x
 N/A 0.4x
 0.3x
 N/A 0.6x
Insurance float as a multiple of White Mountains’s common shareholders’ equity0.4x
 N/A 0.4x
 0.4x
 N/A 0.8x
(1) While classified as a liability for GAAP purposes, as a result of the indefinite deferral of these taxes, Swedish regulatory authorities apply no taxes to the safety reserve when calculating solvency capital under Swedish insurance regulations. Accordingly, under local statutory requirements, an amount equal to the deferred tax liability on Sirius International’s safety reserve is included in solvency capital.
($ in millions)March 31,
2017		 December 31,
2016
Loss and LAE reserves$1,368.8
 $1,365.6
Unearned insurance and reinsurance premiums678.1
 658.0
Ceded reinsurance payable11.2
 17.0
Funds held under insurance and reinsurance contracts148.7
 153.0
Insurance liabilities2,206.8
 2,193.6
    
Cash in regulated insurance and reinsurance subsidiaries$20.9
 $13.6
Reinsurance recoverable on paid and unpaid losses178.1
 179.5
Insurance and reinsurance premiums receivable227.5
 229.9
Deferred acquisition costs110.4
 106.9
Ceded unearned insurance and reinsurance premiums52.4
 44.2
Insurance assets589.3
 574.1
    
Insurance float$1,617.5
 $1,619.5
Insurance float as a multiple of total capital0.4x
 0.4x
Insurance float as a multiple of White Mountains’s common shareholders’ equity0.4x
 0.4x

During the first nine monthsquarter of 2016,2017, insurance float from continuing operations decreased by $16$2 million, primarily due to a highly competitive market$17 million decrease in OneBeacon's insurance float that was mostly offset by a $15 million increase at HG Global and strategic underwriting decisions that resulted in a slight contraction of OneBeacon’s insurance operations.BAM.

Financing

The following table summarizes White Mountains’s capital structure as of September 30, 2016March 31, 2017 and December 31, 20152016:
($ in millions) September 30,
2016		 December 31,
2015		 March 31,
2017		 December 31,
2016
WTM Bank Facility $—
 $50.0
 $—
 $—
OBH Senior Notes, carrying value 273.1
 272.9
 273.2
 273.2
OneBeacon Bank Facility —
 —
 —
 —
MediaAlpha Bank Facility, carrying value 15.4
 14.7
 11.5
 12.7
Total debt in continuing operations 288.5
 337.6
Debt included in discontinued operations (1)
 —
 506.4
Total debt 288.5
 844.0
 284.7
 285.9
Non-controlling interest—OneBeacon Ltd. 247.0
 245.6
 250.7
 244.6
Non-controlling interest—SIG Preference Shares —
 250.0
Non-controlling interests—other, excluding mutuals and reciprocals 36.9
 115.2
 34.7
 35.8
Total White Mountains’s common shareholders’ equity 3,652.2
 3,913.2
 3,625.2
 3,603.3
Total capital 4,224.6
 5,368.0
 4,195.3
 4,169.6
        
Total debt to total capital 7% 16% 7% 7%
(1) See Note 17 - “Held for Sale and Discontinued Operations”.

Management believes that White Mountains has the flexibility and capacity to obtain funds externally as needed through debt or equity financing on both a short-term and long-term basis. However, White Mountains can provide no assurance that, if needed, it would be able to obtain additional debt or equity financing on satisfactory terms, if at all.
On August 14, 2013,
White Mountains entered into ahas an unsecured revolving credit facility with a syndicate of lenders administered by Wells Fargo Bank, N.A., which has a total commitment of $425 million and has a maturity date of August 14, 2018 (the “WTM Bank Facility”). During the nine months ended September 30, 2016, White Mountains borrowed an additional $350 million and repaid $400 million under the WTM Bank Facility at a blended interest rate of 3.85%. As of September 30, 2016,March 31, 2017, the WTM Bank Facility was undrawn.
OneBeacon Ltd. and OneBeacon U.S. Holdings, Inc. (“OBH”), as co-borrowers and co-guarantors, have a revolving credit facility administered by U.S. Bank N.A. and also including BMO Harris Bank N.A., which has a total commitment of $65 million and has a maturity date of September 29, 2019 (the “OneBeacon Bank Facility”).  As of March 31, 2017, the OneBeacon Bank Facility was undrawn.
The WTM and OneBeacon Bank Facility containsFacilities contain various affirmative, negative and financial covenants whichthat White Mountains considers to be customary for such borrowings, including certain minimum net worth and maximum debt to capitalization standards. These covenants can restrict White Mountains in several ways, including its ability to incur additional indebtedness. An uncured breach of these covenants could result in an event of default under the WTM or OneBeacon Bank Facilities, which would allow lenders to declare any amounts owed under the WTM or OneBeacon Bank Facilities to be immediately due and payable. In addition, a default under the WTM or OneBeacon Bank Facilities could occur if certain of White Mountains’s subsidiaries fail to pay principal and interest on a credit facility, mortgage or similar debt agreement (collectively, “covered debt”), or fail to otherwise comply with obligations in such covered debt agreements where such a default gives the holder of the covered debt the right to accelerate at least $75 million of principal amount of covered debt.
On July 23, 2015, MediaAlpha entered into a secured credit facility with Opus Bank, which has a total commitment of $20 million and has a maturity date of July 23, 2019 (the “MediaAlpha Bank Facility”).  The MediaAlpha Bank Facility consists of a $15 million term loan facility, which had a principal balance of $12 million as of March 31, 2017, and a $5 million revolving credit facility, which was undrawn as of March 31, 2017. During the first quarter of 2017, MediaAlpha repaid $1 million under the term loan facility. The MediaAlpha Bank Facility carries a variable interest rate that is based on the Prime Rate, as published by the Wall Street Journal, plus a spread of 1.5% as of March 31, 2017.
The MediaAlpha Bank Facility is secured by intellectual property and the common stock of MediaAlpha’s subsidiaries, and contains various affirmative, negative and financial covenants that White Mountains considers to be customary for such borrowings, including a maximum leverage ratio.
In November 2012, OneBeacon U.S. Holdings, Inc. (“OBH”)OBH issued $275 million face value of senior unsecured notes (“OBH Senior Notes”)debt through a public offering, at an issue price of 99.9% and received $273 million(the “OBH Senior Notes”). The net proceeds from the issuance of proceeds.the OBH Senior Notes were used to repurchase OBH’s previously issued senior notes. The OBH Senior Notes, which are fully and unconditionally guaranteed as to the payment of principal and interest by OneBeacon Ltd., bear an annual interest rate of 4.6%4.60%, payable semi-annually in arrears on May 9 and November 9, until maturity on November 9, 2022, and are fully and unconditionally guaranteed as to the payment of principal and interest by OneBeacon Ltd. Taking into effect the amortization of the original issue discount and all underwriting and issuance expenses, the OBH Senior Notes have an effective yield to maturity of approximately 4.7% per annum.2022.
The OBH Senior Notes were issued under indentures that contain restrictive covenants which, among other things, limit the ability of OneBeacon Ltd., OBH, and their respective subsidiaries to create liens and enter into sale and leaseback transactions and limits the ability of OneBeacon Ltd. and OBH to consolidate, merge or transfer its properties and assets. The indentures do not contain any financial ratios or specified levels of net worth or liquidity to which the OneBeacon Ltd. or OBH must adhere. In addition, a failure by OneBeacon Ltd. or, OBH or their respective subsidiaries to pay principal and interest on covered debt, where such failure results in the acceleration of at least $75 million of the principal amount of covered debt, could trigger the acceleration of the OBH Senior Notes.
On September 29, 2015, OneBeacon Ltd. and OneBeacon U.S. Holdings, Inc. (“OBH”), as co-borrowers and co-guarantors, entered into a revolving credit facility administered by U.S. Bank N.A. and also including BMO Harris Bank N.A., which has a total commitment of $65 million and has a maturity date of September 29, 2019 (the “OneBeacon Bank Facility”).  As of September 30, 2016, the OneBeacon Bank Facility was undrawn.
The OneBeacon Bank Facility contains various affirmative, negative and financial covenants which White Mountains considers to be customary for such borrowings, including certain minimum net worth and maximum debt to capitalization standards.

On July 23, 2015, MediaAlpha entered into a secured credit facility with Opus Bank, which has a total commitment of $20 million and has a maturity date of July 23, 2019 (the “MediaAlpha Bank Facility”).  The MediaAlpha Bank Facility consists of a $14 million term loan facility and a revolving loan facility for $5 million, which had an outstanding balance of $2 million as of September 30, 2016. During the nine months ended September 30, 2016, MediaAlpha repaid $1 million under the term loan facility and borrowed $3 million and repaid $1 million under the revolving loan facility. The MediaAlpha Bank Facility carries a variable interest rate that is based on the Prime Rate, as published by the Wall Street Journal, plus a spread of 1.5% as of September 30, 2016.
The MediaAlpha Bank Facility is secured by intellectual property and the common stock of MediaAlpha’s subsidiaries, and contains various affirmative, negative and financial covenants that White Mountains considers to be customary for such borrowings, including a maximum leverage ratio.
It is possible that, in the future, one or more of the rating agencies may lower White Mountains’s existing ratings. If one or more of its ratings were lowered, White Mountains could incur higher borrowing costs on future borrowings and its ability to access the capital markets could be impacted.

Covenant Compliance
At September 30, 2016,As of March 31, 2017, White Mountains was in compliance with all of the covenants under all of its debt instruments and expects to remain in compliance for the foreseeable future.


Share Repurchases 

White Mountains’s board of directors has authorized the Company to repurchase its common shares from time to time, subject to market conditions. The repurchase authorizations do not have a stated expiration date. As of September 30, 2016,March 31, 2017, White Mountains may repurchase an additional 402,938878,130 shares under these board authorizations. In addition, from time to time White Mountains has also repurchased its common shares through tender offers that were separately approved by its board of directors.
The following table presents common shares repurchased by the Company, by quarter and year-to-date through October for both 2015 and 2016. Theas well as the average price per share as a percent of adjusted book value per share. For 2016 periods, the table also comparespresents the average price per share to the adjusted book value per share, including the estimated gain from the Sirius Group sale of $89 per share as of March 31, 2016 that was reported in the Company’s Form 10-Q for the comparable periods, both with and without transaction gains.
period ended March 31, 2016.
        Average price per share as % of
          Adjusted book
      Average   value per share,
  Shares Cost price Adjusted book including estimated
Dates Repurchased (millions) per share 
value per share (1)
 
transaction gains (2)
           
1st quarter 2016 228,688
 $172.7
 $755.36
 107% 95%
2nd quarter 2016 463,276
 374.7
 808.76
 103% 101%
3rd quarter 2016 389,373
 319.4
 820.17
 102% N/A
Year-to-date September 30, 2016 1,081,337
 866.8
 801.57
 100% N/A
October 2016 13,458
 11.1
 824.48
 103% N/A
Year-to-date October 31, 2016 (3)
 1,094,795
 $877.9
 $801.86
 100% N/A
           
           
1st quarter 2015 17,520
 $11.1
 $631.56
 95% N/A
2nd quarter 2015 33,168
 21.6
 652.03
 97% N/A
3rd quarter 2015 215,540
 159.2
 738.51
 113% 95%
Year-to-date September 30, 2015 266,228
 191.9
 720.70
 110% 92%
October 2015 58,837
 44.3
 753.72
 115% 97%
Year-to-date October 31, 2015 (3)
 325,065
 $236.2
 $726.68
 111% 93%
        Average price per share as % of
          Adjusted book
      Average   value per share,
  Shares Cost price Adjusted book including estimated
Dates Repurchased (millions) per share 
value per share(1)
 gain from Sirius sale
           
1st quarter 2017(2)
 7,699
 $6.5
 $836.05
 105% N/A
April 2017 —
 —
 —
 —% N/A
Year-to-date April 30, 2017 
 7,699
 $6.5
 $836.05
 105% N/A
           
1st quarter 2016(2)
 228,688
 $172.7
 $755.36
 107% 95%
April 2016 356,423
 287.5
 806.52
 114% 102%
Year-to-date April 30, 2016 585,111
 $460.2
 $786.53
 112% 99%
(1) Average price per share is expressed as a percentage of White Mountains's adjusted book value per share as of March 31, 20162017 for the first quarter 2016, June 30, 2016 for the second quarter 2016 and September 30, 2016 for all other 20162017 periods presented and as of March 31, 20152016 for the first quarter 2015, June 30, 2015 for the second quarter 2015 and September 30, 2015 for all other 20152016 periods presented.
(2)For the 3rd quarter, October and year-to-date periods of 2015 and the first quarter 2016, adjusted book value per share includes the gain from sale of Sirius Group. For the second quarter of 2016, adjusted book value per share includes the gain from sale of Tranzact.
(3) Includes 8,0227,699 and 10,8028,022 common shares repurchased by the Company during the first ten monthsquarter of 20162017 and 20152016 to satisfy employee income tax withholding pursuant to employee benefit plans. Shares repurchased pursuant to employee benefit plans do not reduce the board authorization referred to above.

OneBeacon
In 2007, OneBeacon’s board authorized management to repurchase up to $200 million of OneBeacon’s Class A common shares from time to time, subject to market conditions. Shares may be repurchased on the open market or through privately negotiated transactions. This authorization does not have a stated expiration date. Since the inception of this authorization, OneBeacon has repurchased and retired 6.7 million of its Class A common shares. During the first nine monthsquarter of 2017, OneBeacon did not repurchase any of its common shares under the share repurchase authorization. During the first quarter of 2016, OneBeacon repurchased and retired 850,349 of its common shares under the share repurchase authorization for $11 million at an average share price of $12.42. No shares were repurchased under the share repurchase authorization during the first nine months of 2015. The amount of authorization remaining is $75 million as of September 30, 2016.March 31, 2017.
During the first nine monthsquarter of 20162017 and 2015,2016, OneBeacon also repurchased 64,98167,273 and 112,05164,981 common shares for $1 million and $2 millionin each period to satisfy employee income tax withholding pursuant to employee benefit plans. Shares repurchased pursuant to employee benefit plans do not reduce the board authorization referred to above.


Cash Flows

Detailed information concerning White Mountains’s cash flows during the three months ended September 30,March 31, 2017 and 2016 and 2015 follows:
 
Cash flows from continuing operations for the ninethree months ended September 30,March 31, 2017 and March 31, 2016 and September 30, 2015
Net cash (used)/provided fromused for continuing operations was $(126)$56 million in the first ninethree months of 20162017 and $65$46 million in the first ninethree months of 2015.2016. The decreaseincrease in cash flow fromused for continuing operations was primarily driven by (i) a decrease at OneBeacon, due primarily to higher incentive compensation payments and lower premium collections, (ii) the settlement of certain liabilities and transaction costs in connection with the Sirius Group and Tranzact sales, and (iii) an increase in incentive compensation and employee retirement payments in the Other Operations segment in the first nine monthsquarter of 20162017 relative to the first nine monthsquarter of 2015.2016. White Mountains made long-term incentive payments totaling $27 million and $9 million during the first quarter of 2017 and 2016. In 2016, White Mountains made an additional $41 million of long-term incentive payments during the second quarter after the closing of the Sirius Group sale. White Mountains also paid a $21 million cash retirement payment to its former CEO during the first quarter of 2017. White Mountains does not believe these trends will have a meaningful impact on its future liquidity or its ability to meet its future cash requirements.

Cash flows from investing and financing activities for the ninethree months ended September 30,March 31, 2017
Financing and Other Capital Activities
During the first quarter of 2017, the Company declared and paid a $5 million cash dividend to its common shareholders.
During the first quarter of 2017, OneBeacon Ltd. declared and paid $20 million of cash dividends to its common shareholders. White Mountains received a total of $15 million of these dividends.
During the first quarter of 2017, BAM received $10 million in surplus contributions from its members.
During the first quarter of 2017, MediaAlpha paid $0.7 million of dividends, of which $0.4 million was paid to White Mountains. During the first quarter of 2017, MediaAlpha repaid $1 million of the term loan portion of the MediaAlpha Bank Facility.
During the first quarter of 2017, WM Life Re returned $1 million of capital to White Mountains.

Cash flows from investing and financing activities for the three months ended March 31, 2016
Financing and Other Capital Activities
During the first nine monthsquarter of 2016, the Company declared and paid a $5 million cash dividend to its common shareholders.
During the first nine monthsquarter of 2016, the Company repurchased and retired 1,081,337228,688 of its common shares for $867$173 million, which included 8,022 common shares, repurchasedfor $6 million, that was a non-cash repurchase under employee benefit plans.
During the first nine monthsquarter of 2016, White Mountains borrowed a total of $350 million and repaid a total of $400$100 million under the WTM Bank Facility.
During the first nine monthsquarter of 2016, OneBeacon Ltd. declared and paid $59$20 million of cash dividends to its common shareholders. White Mountains received a total of $45$15 million of these dividends.
During the first nine months of 2016, OneBeacon Ltd. repurchased and retired 850,349 shares of its Class A common stock for $11 million.
During the first nine monthsquarter of 2016, HG Global raised $6 million of additional capital through the issuance of preferred shares, 97% of which were purchased by White Mountains. HG Global used $3 million of the proceeds to repay and cancel an internal credit facility with White Mountains.
During the first nine monthsquarter of 2016, BAM received $28$7 million in surplus contributions from its members.
During the first nine monthsquarter of 2016, MediaAlpha paid $2 million of dividends, of which $1 million was paid to White Mountains. During the first nine months of 2016, MediaAlpha repaid $1 million of the term loan portion and borrowed $3 million and repaid $1 million under the revolving loan portion of the MediaAlpha Bank Facility.
During the first nine months of 2016, WM Life Re returned $73 million of capital to White Mountains.
During the first nine monthsquarter of 2016, White Mountains contributed $15 million to WM Advisors.


Acquisitions and Dispositions
OnIn January 7, 2016, Wobi settled its acquisition of the remaining share capital of Cashboard for NIS 16 million (approximately $4 million based upon the foreign exchange spot rate at the date of acquisition).
On February 1, 2016, Symetra closed its definitive merger agreement with Sumitomo Life and White Mountains received proceeds of $658 million, or $32.00 per Symetra common share.
On February 26, 2016, White Mountains paid $8 million in settlement of the contingent purchase adjustment for its acquisition of MediaAlpha in 2014.
On April 18, 2016, White Mountains completed the sale of Sirius Group to CMI for approximately $2.6 billion. $162 million of this amount was used to purchase certain assets to be retained by White Mountains out of Sirius Group, including shares of OneBeacon.
On April 27, 2016 and August 26, 2016, White Mountains purchased NIS 16 million (approximately $4 million) and NIS 12 million (approximately $3 million) of convertible preferred shares of Wobi, increasing its ownership share to 96.7% on a fully converted basis.
On July 21, 2016, White Mountains completed the sale of Tranzact and received net proceeds of $221 million.
On August 4, 2016, White Mountains purchased 110,461 common shares of Buzzmove for GBP 4 million (approximately $5 million) and 54,172 shares of newly issued convertible preferred shares for GBP 2 million (approximately $3 million), representing a 70.9% ownership share of Buzzmove on a fully converted basis.

Cash flows from investing and financing activities for the nine months ended September 30, 2015
Financing and Other Capital Activities
During the first nine months of 2015, the Company declared and paid a $6 million cash dividend to its common shareholders.
During the first nine months of 2015, the Company repurchased and retired 266,228 of its common shares for $192 million, which included 10,802 common shares repurchased under employee benefit plans and 13,500 common shares repurchased in connection with the Company's redemption of its interests in Prospector Offshore Fund, Ltd.
During the first nine months of 2015, White Mountains borrowed and subsequently repaid a total of $75 million under the WTM Bank Facility.
During the first nine months of 2015, OneBeacon Ltd. declared and paid $60 million of cash dividends to its common shareholders. White Mountains received a total of $45 million of these dividends.
During the first nine months of 2015, BAM received $20 million in surplus contributions from its members.
During the first nine months of 2015, MediaAlpha paid $3 million of dividends, of which $2 million was paid to White Mountains. During the first nine months of 2015, MediaAlpha borrowed $15 million under the term loan portion of the MediaAlpha Bank Facility and used the proceeds to make a $15 million return of capital payment to its shareholders, of which White Mountains received $9 million.
During the first nine months of 2015, White Mountains contributed $8 million to WM Life Re.
During the first nine months of 2015, WM Life Re repaid $23 million under an internal revolving credit facility with an intermediate holding company of White Mountains.

Acquisitions and Dispositions
On February 23, 2015, Wobi acquired 56.2% of the outstanding share capital of Cashboard for NIS 10 million (approximately $2 million).
During the second quarter of 2015, White Mountains increased its ownership interest in Wobi through the purchase of shares from a non-controlling interest shareholder for NIS 35 million (approximately $9 million) and newly-issued convertible preferred shares for NIS 25 million (approximately $7 million).
On April 2, 2015, White Mountains closed on PassportCard, a 50/50 joint venture with DavidShield and contributed $21.0 million of assets to a newly formed entity, PPCI Global Ltd.
On May 27, 2015, White Mountains sold its interest in Hamer LLC and received cash proceeds of $24 million.
During the first nine months of 2015, White Mountains purchased $3 million of surplus notes issued by SSIE.


FAIR VALUE CONSIDERATIONS
 
General
White Mountains records certain assets and liabilities at fair value in its consolidated financial statements, with changes therein recognized in current period earnings. In addition, White Mountains discloses estimated fair value for certain liabilities measured at historical or amortized cost. Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants (an exit price) at a particular measurement date. Fair value measurements are categorized into a hierarchy that distinguishes between inputs based on market data from independent sources (“observable inputs”) and a reporting entity’s internal assumptions based upon the best information available when external market data is limited or unavailable (“unobservable inputs”). Quoted prices in active markets for identical assets have the highest priority (“Level 1”), followed by observable inputs other than quoted prices including prices for similar but not identical assets or liabilities (“Level 2”), and unobservable inputs, including the reporting entity’s estimates of the assumptions that market participants would use, having the lowest priority (“Level 3”).
Assets and liabilities carried at fair value include substantially all of the investment portfolio; derivative instruments, both exchange traded and over the counter instruments; and reinsurance assumed liabilities associated with variable annuity benefit guarantees. Valuation of assets and liabilities measured at fair value require management to make estimates and apply judgment to matters that may carry a significant degree of uncertainty. In determining its estimates of fair value, White Mountains uses a variety of valuation approaches and inputs. Whenever possible, White Mountains estimates fair value using valuation methods that maximize the use of observable prices and other inputs. Where appropriate, assets and liabilities measured at fair value have been adjusted for the effect of counterparty credit risk.

Invested Assets
White Mountains’s invested assets that are measured at fair value include fixed maturity investments, common equity securities and interests in hedge funds and private equity funds.
Where available, the estimated fair value of investments is based upon quoted prices in active markets. In circumstances where quoted prices are unavailable, White Mountains uses fair value estimates based upon other observable inputs including benchmark yields, reported trades, broker dealer quotes, issuer spreads, benchmark securities, bids, offers, prepayment speeds, reference data including research publications and other relevant inputs. Where observable inputs are not available, the estimated fair value is based upon internal pricing models using assumptions that include inputs that may not be observable in the marketplace but which reflect management’s best judgment given the circumstances and consistent with what other market participants would use when pricing such instruments.
As of September 30, 2016March 31, 2017, approximately 91%93% of the investment portfolio (including investments in discontinued operations) recorded at fair value was priced based upon quoted market prices or other observable inputs. Investments valued using Level 1 inputs include fixed maturity securities, primarily investments in U.S. Treasuries, common equity securities and short-term investments, which include U.S. Treasury Bills. Investments valued using Level 2 inputs comprise fixed maturity securities including debt securities issued by corporations, municipal obligations, mortgage and asset-backed securities, foreign government, agency and provisional obligations and preferred stock. Fair value estimates for investments that trade infrequently and have few or no observable market prices are classified as Level 3 measurements. Investments valued using Level 2 inputs also include certain ETFs that track U.S. stock indices such as the S&P 500 but are traded on foreign exchanges and that management values using the fund’s published NAV to account for the difference in market close times. Level 3 fair value estimates based upon unobservable inputs include White Mountains’s investments in surplus notes, as well as certain investments in fixed maturity investments, common equity securities and other long-term investments where quoted market prices are unavailable or are not considered reasonable.
White Mountains determines when transfers between levels have occurred as of the beginning of the period. White Mountains uses brokers and outside pricing services to assist in determining fair values. For investments in active markets, White Mountains uses the quoted market prices provided by outside pricing services to determine fair value. The outside pricing services used by White Mountains have indicated that if no observable inputs are available for a security, they will not provide a price.

In those circumstances, White Mountains estimates the fair value using industry standard pricing methodologies and observable inputs such as benchmark yields, reported trades, broker dealer quotes, issuer spreads, bids, offers, credit ratings prepayment speeds, reference data including research publications and other relevant inputs. White Mountains performs procedures to validate the market prices obtained from the outside pricing sources. Such procedures, which cover substantially all of its fixed maturity investments include, but are not limited to, evaluation of pricing methodologies and the pricing services’ quality control processes and procedures on at least an annual basis, comparison of market prices to prices obtained from alternative independent pricing vendors on at least a semi-annual basis, monthly analytical reviews of certain prices, and review of assumptions utilized by the pricing service for selected measurements on an ad hoc basis throughout the year. White Mountains also performs back-testing of selected sales activity to determine whether there are any significant differences between the market price used to value the security prior to sale and the actual sale price on an ad-hoc basis throughout the year. Prices provided by the pricing services that vary by more than 5% and $1 million from the expected price based on these procedures are considered outliers. Also considered outliers are prices that have not changed from period to period and prices that have trended unusually compared to market conditions. In circumstances where the results of White Mountains’s review process do not appear to support the market price provided by the pricing services, White Mountains challenges the price.  The fair values of such securities are considered to be Level 3 measurements.

NON-GAAP FINANCIAL MEASURES
 
This report includes threetwo non-GAAP financial measures that have been reconciled to their most comparable GAAP financial measures.
Adjusted comprehensive income is a non-GAAP financial measure that, for periods that White Mountains accounted for its investment in Symetra under the equity method, excludes the change in equity in net unrealized gains and losses from Symetra’s fixed maturity portfolio, net of applicable taxes, from comprehensive income. White Mountains accounted for its investment in Symetra under the equity method until November 5, 2015, when it changed its accounting to fair value. In the calculation of comprehensive income under GAAP, fixed maturity investments are marked-to-market while the liabilities to which those assets are matched are not. Symetra attempts to earn a “spread” between what it earns on its investments and what it pays out on its products. In order to try to fix this spread, Symetra invests in a manner that tries to match the duration and cash flows of its investments with the required cash outflows associated with its life insurance and structured settlements products. As a result, Symetra typically earns the same spread on in-force business whether interest rates fall or rise. Further, at any given time, some of Symetra’s structured settlement obligations may extend 40 or 50 years into the future, which is further out than the longest maturing fixed maturity investments regularly available for purchase in the market (typically 30 years). For these long-dated products, Symetra is unable to fully match the obligation with assets until the remaining expected payout schedule comes within the duration of securities available in the market. If at that time, these fixed maturity investments have yields that are lower than the yields expected when the structured settlement product was originally priced, the spread for the product will shrink and Symetra will ultimately harvest lower returns for its shareholders. GAAP comprehensive income increases when rates decline, which would suggest an increase in the value of Symetra - the opposite of what is happening to the intrinsic value of the business. Therefore, White Mountains’s management and Board of Directors historically used adjusted comprehensive income when assessing Symetra’s quarterly financial performance. In addition, this measure is typically the predominant component of change in adjusted book value per share, which is used in calculation of White Mountains’s performance for both short-term (annual bonus) and long-term incentive plans. The reconciliation of comprehensive income to adjusted comprehensive income is included on page 53.
Adjusted book value per share is a non-GAAP financial measure which is derived by expandingadjusting the calculation of GAAP book value per share to exclude equity in net unrealized gains (losses) from Symetra’s fixed maturity portfolio, net of applicable taxes, for periods that White Mountains accounted for its investment in Symetra under the equity method. White Mountains accounted for its investment in Symetra under the equity method until November 5, 2015, when it changed its accounting to fair value. Adjusted book value per share includes the dilutive effects of outstanding non-qualified options. In addition, the number of common shares outstanding used in the calculation of adjusted book value per White Mountains's common share is adjusteddenominator to exclude unearned restricted common shares, the compensation cost of which, at the date of calculation, has yet to be amortized. The reconciliationIn addition, the calculation of adjusted book value per share includes the dilutive effects of outstanding non-qualified options for periods prior to January 20, 2017, the expiration date of the non-qualified options. The reconciliation of GAAP book value per share to adjusted book value per share is included on page 52.

46.
In the third quarter of 2016, White Mountains purchased high-yield fixed maturity investments, which are U.S. dollar denominated publicly traded and 144A debt securities issued by corporations with generally at least one rating between "B-" and “BB+” inclusive by Standard and Poor's or similar ratings from other rating agencies. Given the risk profile of these investments, White Mountains has included returns on high-yield fixed maturity investment returns with returns on common equity securities and other long-term investments. A reconciliation of these returns follows:
  September 30, 2016
Common equity securities and other long-term investment returns GAAP return 
Include: Impact of return on high-yield fixed maturity investments(1)
 Reported return
       
Quarter-to-date 3.9
% (0.4)% 3.5
%
Year-to-date 5.6
% (0.2)% 5.4
%

  September 30, 2016
Fixed maturity investment returns GAAP return 
Exclude: Impact of return on high-yield fixed maturity investments(1)
 Reported return
       
Quarter-to-date 0.4
% —
% 0.4
%
Year-to-date 2.9
% —
% 2.9
%
  March 31, 2017
Common equity securities and other long-term investment returns GAAP return 
Include: Impact of high-yield fixed maturity investments (1)(2)
 Reported return
       
Quarter-to-date 4.2
% (0.5)% 3.7
%
(1) High-yield fixed maturity investments returned 1.0%2.2% for the thirdfirst quarter of 2016.2017.
(2) The impact of excluding high-yield fixed maturity investments from the GAAP fixed maturity investment returns was insignificant in the first quarter of 2017.

CRITICAL ACCOUNTING ESTIMATES
 
Refer to the Company’s 20152016 Annual Report on Form 10-K for a complete discussion regarding White Mountains’s critical accounting estimates.


FORWARD-LOOKING STATEMENTS
 
This report may contain “forward-looking statements” within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934. All statements, other than statements of historical facts, included or referenced in this report which address activities, events or developments which White Mountains expects or anticipates will or may occur in the future are forward-looking statements. The words “will”, “believe”, “intend”, “expect”, “anticipate”, “project”, “estimate”, “predict” and similar expressions are also intended to identify forward-looking statements. These forward-looking statements include, among others, statements with respect to White Mountains’s:
 
changes in adjusted book value per share or return on equity;
business strategy;
financial and operating targets or plans;
incurred loss and loss adjustment expenses and the adequacy of its loss and loss adjustment expense reserves and related reinsurance;
projections of revenues, income (or loss), earnings (or loss) per share, dividends, market share or other financial forecasts;
expansion and growth of its business and operations; and
future capital expenditures.
 

These statements are based on certain assumptions and analyses made by White Mountains in light of its experience and perception of historical trends, current conditions and expected future developments, as well as other factors believed to be appropriate in the circumstances. However, whether actual results and developments will conform with its expectations and predictions is subject to a number of risks and uncertainties that could cause actual results to differ materially from expectations, including:
 
the risk that OneBeacon's proposed merger with Intact Financial Corporation (the “Transaction”) may not be completed on the currently contemplated timeline or at all;
the possibility that any or all of the various conditions to the consummation of the Transaction may not be satisfied or waived, including the failure to receive any required regulatory approvals from any applicable governmental entities (or any conditions, limitations or restrictions placed on such approvals);
the occurrence of any event, change or other circumstance that could give rise to the termination of the merger agreement dated May 2, 2017, among OneBeacon, Intact Financial Corporation and the other parties thereto (the “Merger Agreement”), including in circumstances which would require OneBeacon to pay a termination fee or other expenses;
risks related to diverting management’s attention from White Mountains’s or OneBeacon’s ongoing business operations and other risks related to the announcement or pendency of the Transaction, including on White Mountains’s or OneBeacon’s ability to retain and hire key personnel, their ability to maintain relationships with its customers, policyholders, brokers, service providers and others with whom they do business and their operating results and business generally;
the risk that shareholder litigation in connection with the transactions contemplated by the Merger Agreement may result in significant costs of defense, indemnification and liability;
the risks associated with Item 1A of White Mountains’s 20152016 Annual Report on Form 10-K;
claims arising from catastrophic events, such as hurricanes, earthquakes, floods, fires, terrorist attacks or severe winter weather;
the continued availability of capital and financing;
general economic, market or business conditions;
business opportunities (or lack thereof) that may be presented to it and pursued;
competitive forces, including the conduct of other property and casualty insurers and reinsurers;
changes in domestic or foreign laws or regulations, or their interpretation, applicable to White Mountains, its competitors or its customers;
an economic downturn or other economic conditions adversely affecting its financial position;
recorded loss reserves subsequently proving to have been inadequate;
actions taken by ratings agencies from time to time, such as financial strength or credit ratings downgrades or placing ratings on negative watch; and
other factors, most of which are beyond White Mountains’s control.
 

Consequently, all of the forward-looking statements made in this report are qualified by these cautionary statements, and there can be no assurance that the actual results or developments anticipated by White Mountains will be realized or, even if substantially realized, that they will have the expected consequences to, or effects on, White Mountains or its business or operations. White Mountains assumes no obligation to publicly update any such forward-looking statements, whether as a result of new information, future events or otherwise.

Item 3.Quantitative and Qualitative Disclosures About Market Risk.

Refer to White Mountains’s 20152016 Annual Report on Form 10-K and in particular Item 7A. - “Quantitative and Qualitative Disclosures About Market Risk”. 

Item 4.
Controls and Procedures.
 
The Principal Executive Officer (“PEO”) and the Principal Financial Officer (“PFO”) of White Mountains have evaluated the effectiveness of its disclosure controls and procedures (as defined in Rule 13a-15(e) and 15d-15(e) of the Exchange Act) as of the end of the period covered by this report. Based on that evaluation, the PEO and PFO have concluded that White Mountains’s disclosure controls and procedures are effective.
There were no significant changes with respect to the Company’s internal control over financial reporting or in other factors that materially affected, or are reasonably likely to materially affect, internal control over financial reporting during the quarter ended September 30, 2016March 31, 2017.
 
Part II.OTHER INFORMATION
 

Item 1.
Legal Proceedings.
 
Tribune Company
In June 2011, Deutsche Bank Trust Company Americas, Law Debenture Company of New York and Wilmington Trust Company (collectively referred to as “Plaintiffs”), in their capacity as trustees for certain senior notes issued by the Tribune Company (“Tribune”), filed lawsuits in various jurisdictions (the “Noteholder Actions”) against numerous defendants including OneBeacon, OneBeacon-sponsored benefit plans and other affiliates of White Mountains in their capacity as former shareholders of Tribune seeking recovery of the proceeds from the sale of common stock of Tribune in connection with Tribune’sTribune's leveraged buyout in 2007 (the “LBO”). Tribune filed for bankruptcy in 2008 in the Delaware bankruptcy court (the “Bankruptcy Court”). The Bankruptcy Court granted Plaintiffs permission to commence these LBO-related actions, and in 2011, the Judicial Panel on Multidistrict Litigation granted a motion to consolidate the actions for pretrial matters and transferred all such proceedings to the United StatesU.S. District Court for the Southern District of New York.York (the “SDNY”). Plaintiffs seek recovery of the proceeds received by the former Tribune shareholders on a theory of constructive fraudulent transfer asserting that Tribune purchased or repurchased its common shares without receiving fair consideration at a time when it was, or as a result of the purchases of shares, was rendered, insolvent. OneBeacon has entered into a joint defense agreement with other affiliates of White Mountains that are defendants in the action. OneBeacon received approximately $32.0$32 million for Tribune common stock tendered in connection with the LBO.
The Court granted an omnibus motion to dismiss the Noteholder Actions in September 2013 and the plaintiffs appealed. On March 29, 2016, a three judge panel of the U.SU.S. Second Circuit Court of Appeals affirmed the dismissal of the Noteholders Action.Noteholder Actions. On July 22, 2016, the Plaintiff's petition to the Second Circuit for reconsideration or for a rehearing en banc was denied in full. On September 9, 2016, the Plaintiffs filed for a writ of certiorari, seeking review in the United StatesU.S. Supreme Court.
In addition, OneBeacon, OneBeacon-sponsored benefit plans and other affiliates of White Mountains in their capacity as former shareholders of Tribune, along with thousands of former Tribune shareholders, have been named as defendants in an adversary proceeding brought by the Official Committee of Unsecured Creditors of the Tribune Company (the “Committee”), on behalf of the Tribune Company, which seeks to avoid the repurchase of shares by Tribune in the LBO on a theory of intentional fraudulent transfer (the “Committee Action”). Tribune emerged from bankruptcy in 2012, and a litigation trustee replaced the Committee as plaintiff in the Committee Action. This matter was consolidated for pretrial matters with the Noteholder Actions in the United States District Court for the Southern District of New YorkSDNY and was stayed pending the motion to dismiss in the Noteholder Action.Actions. An omnibus motion to dismiss the shareholder defendants in the Committee Action was filed in May 2014.2014 and the motion was granted on January 6, 2017. The plaintiff has requested permission to move the SDNY to certify the decision as a final judgment capable of immediate appeal. No amount has been accrued in connection with this matter as of September 30, 2016,March 31, 2017, as the amount of loss, if any, cannot be reasonably estimated.


Item 1A. Risk Factors.
 
There have been no material changes to any of the risk factors previously disclosed the Registrant’s 20152016 Annual Report on Form 10-K.

Item 2.Issuer Purchases of Equity Securities.

Months 
Total Number of
Shares Purchased
 
Average Price
Paid per Share
 
Total Number of Shares 
Purchased as Part of 
Publicly Announced Plan (1)
 
Maximum Number
of Shares that May
Yet Be Purchased
Under the Plan (1)
July 1-July 31, 2016 32,983
 $819.67
 32,983
 759,328
August 1-August 31, 2016 29,810
 $822.36
 29,810
 729,518
September 1-September 30, 2016 326,580
 $820.01
 326,580
 402,938
Total 389,373
 $820.17
 389,373
 402,938
Months 
Total Number of
Shares Purchased
 
Average Price
Paid per Share
 
Total Number of Shares 
Purchased as Part of 
Publicly Announced Plan (1)
 
Maximum Number
of Shares that May
Yet Be Purchased
Under the Plan (1)
January 1-January 31, 2017 7,699
 $836.05
 —
 878,130
February 1-February 28, 2017 —
 $—
 —
 878,130
March 1-March 31, 2017 —
 $—
 —
 878,130
Total 7,699
 $836.05
 —
 878,130
(1) White Mountains’s board of directors has authorized the Company to repurchase its common shares, from time to time, subject to market conditions. The repurchase authorizations do not have a stated expiration date. As of September 30, 2016, White Mountains may repurchase an additional 402,938 shares under these board authorizations.
 


Item 3. Defaults Upon Senior Securities.
 
None.
 
Item 4.Mine Safety Disclosures.

None.
 
Item 5.
Other Information.
 
None.
 

Item 6.
Exhibits.
(a) ExhibitsExhibit numberName
3—
Amended and Restated Bye-Laws of the Company. *
10.1—
Retirement Agreement dated March 1, 2017 between White Mountains Insurance Group, Ltd. and Raymond Barrette. *
10.2—
Fourth Amendment dated as of February 28, 2017 to the Amended and Restated Investment Management Agreement dated as of December 23, 2014 by and between White Mountains Advisors LLC and OneBeacon Insurance Group, Ltd. *
10.3—
OneBeacon's 2017 Management Incentive Plan. *
10.4—
OneBeacon 2017 Long-Term Incentive Plan. *
10.5—
Form of OneBeacon Insurance Group, Ltd. 2017 Special Restricted Share Award Agreement. *
10.6—
Form of OneBeacon Insurance Group, Ltd. 2017-2019 Restricted Share Award Agreement. *
  11 —
 
Statement Re Computation of Per Share Earnings. **
  31.1 —
 
Principal Executive Officer Certification Pursuant to Rule 13a-14 (a) of the Securities Exchange Act of 1934, as Amended. *
  31.2 —
 
Principal Financial Officer Certification Pursuant to Rule 13a-14 (a) of the Securities Exchange Act of 1934, as Amended. *
  32.1 —
 
Principal Executive Officer Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002. *
  32.2 —
 
Principal Financial Officer Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002. *
  101.1101 —
 The following financial information from White Mountains’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2016March 31, 2017 formatted in XBRL: (i) Consolidated Balance Sheets, September 30, 2016March 31, 2017 and December 31, 2015;2016; (ii) Consolidated Statements of Operations and Comprehensive Income, Three Ended March 31, 2017 and Nine Months Ended September 30, 2016 and 2015;2016; (iii) Consolidated Statements of Changes in Equity, NineThree Months Ended September 30, 2016March 31, 2017 and 2015;2016; (iv) Consolidated Statements of Cash Flows, NineThree Months Ended September 30, 2016March 31, 2017 and 2015;2016; and (v) Notes to Consolidated Financial Statements. *
*Included herein
**
Not included as an exhibit as the information is contained elsewhere within this report. See Note 11 -— “Earnings Per Share” of the Notes to Consolidated Financial Statements.

SIGNATURES
 
Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.
   WHITE MOUNTAINS INSURANCE GROUP, LTD.
   (Registrant)
     
Date:NovemberMay 2, 20162017  By: /s/ J. Brian Palmer
    J. Brian Palmer
    Managing Director and Chief Accounting Officer

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