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 March 31,September 30, 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, 03755-2053
Hanover, New Hampshire 03755-2053(Zip Code)
(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 April 28,November 7, 2017, 4,572,7923,749,971 common shares with a par value of $1.00 per share were outstanding (which includes 60,13953,554 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, March 31,September 30, 2017 and December 31, 2016
1
   
 
Consolidated Statements of Operations and Comprehensive Income,
 
      Three and Nine Months Ended March 31,September 30, 2017 and 2016
2
   
 
Consolidated Statements of Changes in Equity, ThreeNine Months Ended March 31,September 30, 2017 and 2016
3
   
 Consolidated Statements of Cash Flows, ThreeNine Months Ended March 31,September 30, 2017 and 2016
4
   
 
Notes to Consolidated Financial Statements
5
   
Item 2.
Management’s Discussion and Analysis of Financial Condition and Results of Operations
4551
   
 Results of Operations for the Three and Nine Months Ended March 31,September 30, 2017 and 2016
4551
   
 
Liquidity and Capital Resources
5769
   
 
Fair Value Considerations
6374
   
 
Non-GAAP Financial Measures
6476
   
 
Critical Accounting Estimates
6477
   
 
Forward-Looking Statements
6578
   
Item 3.
Quantitative and Qualitative Disclosures About Market Risk
6678
   
Item 4.
Controls and Procedures
6679
   
PART II.
OTHER INFORMATION
6679
   
Items 1 through 6.
6679
   
SIGNATURES
6880


Part I.FINANCIAL INFORMATION.
Item 1.Financial Statements
WHITE MOUNTAINS INSURANCE GROUP, LTD.
CONSOLIDATED BALANCE SHEETS
(Millions, except share amounts) March 31,
2017		 December 31,
2016
(Millions, except��share amounts) September 30,
2017		 December 31,
2016
Assets Unaudited  
 (Unaudited)  
Fixed maturity investments, at fair value $4,175.4
 $4,250.2
 $1,490.0
 $2,081.1
Short-term investments, at amortized cost (which approximates fair value) 230.9
 287.0
 786.5
 174.9
Common equity securities, at fair value 601.0
 474.3
 774.4
 285.6
Other long-term investments 331.7
 323.3
 229.6
 172.8
Total investments 5,339.0
 5,334.8
 3,280.5
 2,714.4
Cash 125.0
 149.8
 48.6
 80.2
Reinsurance recoverable on unpaid losses 174.7
 172.9
Reinsurance recoverable on paid losses 3.4
 6.6
Insurance premiums receivable 227.5
 229.9
 4.5
 1.6
Deferred acquisition costs 110.4
 106.9
 14.1
 10.6
Deferred tax asset 125.5
 126.7
Ceded unearned insurance premiums 52.4
 44.2
Accrued investment income 27.2
 26.1
 15.4
 14.8
Accounts receivable on unsettled investment sales 24.5
 6.2
 190.1
 4.8
Goodwill and other intangible assets 53.0
 55.9
 37.8
 45.2
Other assets 254.3
 274.6
 46.1
 49.1
Assets held for sale —
 10.1
 —
 3,599.5
Total assets $6,516.9
 $6,544.7
 $3,637.1
 $6,520.2
Liabilities  
  
  
  
Loss and loss adjustment expense reserves $1,368.8
 $1,365.6
Unearned insurance premiums 678.1
 658.0
 $118.5
 $82.9
Debt 284.7
 285.9
 9.4
 12.7
Accrued incentive compensation 83.2
 140.0
 76.9
 95.7
Funds held under insurance contracts 148.7
 153.0
Accounts payable on unsettled investment purchases 17.3
 —
 49.7
 —
Other liabilities 178.5
 199.9
 45.4
 43.6
Liabilities held for sale —
 5.1
 —
 2,569.3
Total liabilities 2,759.3
 2,807.5
 299.9
 2,804.2
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 4,572,792 and 4,563,814 shares 4.6
 4.6
issued and outstanding 3,749,971 and 4,563,814 shares 3.7
 4.6
Paid-in surplus 802.5
 806.1
 665.6
 806.1
Retained earnings 2,821.8
 2,797.2
 2,800.8
 2,776.6
Accumulated other comprehensive loss, after tax:        
Net unrealized foreign currency translation losses (.6) (1.4) (1.3) (1.4)
Pension liability (3.1) (3.2)
Accumulated other comprehensive loss from net change
in benefit plan assets and obligations
 —
 (3.2)
Total White Mountains’s common shareholders’ equity 3,625.2
 3,603.3
 3,468.8
 3,582.7
Non-controlling interests 132.4
 133.9
 (131.6) 133.3
Total equity 3,757.6
 3,737.2
 3,337.2
 3,716.0
Total liabilities and equity $6,516.9
 $6,544.7
 $3,637.1
 $6,520.2

 See Notes to Consolidated Financial Statements

WHITE MOUNTAINS INSURANCE GROUP, LTD.
CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME
Unaudited (Unaudited)
 Three Months Ended Three Months Ended Nine Months Ended
 March 31, September 30, September 30,
(Millions, except per share amounts) 2017 2016 2017 2016 2017 2016
Revenues:            
Earned insurance premiums $264.8
 $282.1
 $2.4
 $3.4
 $7.6
 $10.2
Net investment income 26.1
 17.9
 12.2
 9.6
 39.7

18.2
Net realized and unrealized investment gains 51.3
 29.5
 32.5
 10.9
 102.5

27.2
Advertising and commission revenues 38.8
 28.2
 103.9
 89.6
Other revenue 43.7
 39.8
 1.6
 4.7
 6.1
 18.0
Total revenues 385.9
 369.3
 87.5
 56.8
 259.8
 163.2
Expenses:          
  
Loss and loss adjustment expenses 151.7
 161.1
 —
 2.2
 1.1
 6.8
Insurance acquisition expenses 46.6
 52.7
 .9
 1.3
 3.1
 4.4
Other underwriting expenses 51.8
 55.4
 .1
 .2
 .3
 .4
Cost of sales 33.1
 24.0
 88.7
 76.9
General and administrative expenses 94.2
 87.1
 44.1
 42.4
 162.2
 144.9
Interest expense 3.7
 4.5
 .9
 .5
 1.8
 2.6
Total expenses 348.0
 360.8
 79.1
 70.6
 257.2
 236.0
    
Pre-tax income from continuing operations 37.9
 8.5
    
Income tax (expense) benefit (3.9) 9.7
    
Net income from continuing operations 34.0
 18.2
    
Loss from sale of discontinued operations, net of tax (1.0) —
    
Net income from discontinued operations, net of tax —
 1.1
Pre-tax income (loss) from continuing operations 8.4
 (13.8) 2.6
 (72.8)
Income tax benefit 4.0
 17.1
 5.3
 22.7
Net income (loss) from continuing operations 12.4
 3.3
 7.9
 (50.1)
Gain from sale of other discontinued operations, net of tax 554.3
 47.9
 552.7
 414.5
Net (loss) income from discontinued operations, net of tax (15.2) 36.5
 20.5
 100.9
            
Net income 33.0
 19.3
 551.5
 87.7
 581.1
 465.3
Net loss (income) attributable to non-controlling interests 1.3
 (6.3) 10.6
 3.1
 23.6
 (24.6)
    
Net income attributable to White Mountains’s common shareholders 34.3
 13.0
 562.1
 90.8
 604.7
 440.7
    
Other comprehensive income, net of tax:    
Change in foreign currency translation, pension liability and other, net of tax .9
 .1
Change in foreign currency translation and other from discontinued operations, net of tax —
 37.2
    
Comprehensive income, net of tax:      
  
Change in foreign currency translation, net of tax —
 .2
 .2
 (.4)
Comprehensive income from discontinued operations, net of tax 3.0
 (.3) 3.2
 145.8
Comprehensive income 565.1
 90.7
 608.1
 586.1
Other comprehensive income attributable to non-controlling interests —
 .1
 (.1) .1
Comprehensive income attributable to White Mountains’s common shareholders $35.2
 $50.3
 $565.1
 $90.8
 $608.0
 $586.2
    
Income per share attributable to White Mountains’s common shareholders          
  
Basic income (loss) per share            
Continuing operations $7.72
 $2.14
 $5.36
 $1.31
 $7.03
 $(14.47)
Discontinued operations (.22) .20
 125.45
 17.34
 128.03
 99.75
Total consolidated operations $7.50
 $2.34
 $130.81
 $18.65
 $135.06
 $85.28
    
Diluted income (loss) per share          
  
Continuing operations $7.72
 $2.14
 $5.36
 $1.31
 $7.03
 $(14.47)
Discontinued operations (.22) .20
 125.45
 17.30
 128.03
 99.60
Total consolidated operations $7.50
 $2.34
 $130.81
 $18.61
 $135.06
 $85.13
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(Unaudited)
 White Mountains’s Common Shareholders’ Equity     White Mountains’s Common Shareholders’ Equity    
(Millions) Common shares and paid-in surplus Retained earnings AOCI, after tax Total Non-controlling interest Total Equity 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
 $810.7
 $2,776.6
 $(4.6) $3,582.7
 $133.3
 $3,716.0
            
Net income —
 34.3
 —
 34.3
 (1.3) 33.0
 —
 604.7
 —
 604.7
 (23.6) 581.1
Net change in foreign currency translation and pension liability —
 —
 .9
 .9
 —
 .9
Net change in foreign currency translation and
benefit plan assets and obligations
 —
 —
 .4
 .4
 .1
 .5
Recognition of benefit plan assets and obligations
from the sale of OneBeacon
 —
 —
 2.9
 2.9
 —
 2.9
Total comprehensive income —
 34.3
 .9
 35.2
 (1.3) 33.9
 —
 604.7
 3.3
 608.0
 (23.5) 584.5
Dividends declared on common shares —
 (4.6) —
 (4.6) —
 (4.6) —
 (4.6) —
 (4.6) —
 (4.6)
Dividends to non-controlling interests —
 —
 —
 —
 (6.6) (6.6) —
 —
 —
 —
 (17.7) (17.7)
Repurchases and retirements of common shares (1.4) (5.1) —
 (6.5) (1.1) (7.6) (147.9) (575.9) —
 (723.8) (5.2) (729.0)
Issuances of common shares 1.7
 —
 —
 1.7
 —
 1.7
Deconsolidation of non-controlling interests
associated with the sale of Star & Shield
 —
 —
 —
 —
 (4.4) (4.4) —
 —
 —
 —
 (4.4) (4.4)
Deconsolidation of non-controlling interests
associated with the sale of OneBeacon		 —
 —
 —
 —
 (238.3) (238.3)
Issuance of shares to non-controlling interests (4.8) —
 —
 (4.8) 4.8
 —
 (4.1) —
 —
 (4.1) 4.7
 .6
Net contributions from non-controlling interests —
 —
 —
 —
 6.9
 6.9
 (1.7) —
 —
 (1.7) 18.7
 17.0
Amortization of restricted share awards 2.6
 —
 —
 2.6
 .2
 2.8
 10.6
 —
 —
 10.6
 .8
 11.4
Balance at March 31, 2017 $807.1
 $2,821.8
 $(3.7) $3,625.2
 $132.4
 $3,757.6
Balance at September 30, 2017 $669.3
 $2,800.8
 $(1.3) $3,468.8
 $(131.6) $3,337.2
                        
 White Mountains’s Common Shareholders’ Equity     White Mountains’s Common Shareholders’ Equity    
(Millions) Common shares and paid-in surplus Retained earnings AOCI, after tax Total Non-controlling interest Total Equity 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
 $978.2
 $3,075.0
 $(149.9) $3,903.3
 $454.3
 $4,357.6
            
Net income —
 13.0
 —
 13.0
 6.3
 19.3
 —
 440.7
 —
 440.7
 24.6
 465.3
Net change in foreign currency translation and pension liability —
 —
 37.3
 37.3
 —
 37.3
Net change in foreign currency translation and
benefit plan assets and obligations
 —
 —
 32.1
 32.1
 .1
 32.2
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 —
 13.0
 37.3
 50.3
 6.3
 56.6
 —
 440.7
 145.4
 586.1
 24.7
 610.8
Dividends declared on common shares —
 (5.4) —
 (5.4) —
 (5.4) —
 (5.4) —
 (5.4) —
 (5.4)
Dividends to non-controlling interests —
 —
 —
 —
 (6.2) (6.2) —
 —
 —
 —
 (17.4) (17.4)
Repurchases and retirements of common shares (39.8) (132.9) —
 (172.7) —
 (172.7) (188.1) (678.6) —
 (866.7) —
 (866.7)
Issuance 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) (2.7) —
 —
 (2.7) (8.8) (11.5)
Issuances of shares to non-controlling interests —
 —
 —
 —
 .3
 .3
 —
 —
 —
 —
 .3
 .3
Net contributions from non-controlling interests —
 —
 —
 —
 4.8
 4.8
 —
 —
 —
 —
 20.1
 20.1
Amortization of restricted share awards 3.2
 —
 —
 3.2
 .2
 3.4
 13.3
 —
 —
 13.3
 .5
 13.8
Balance at March 31, 2016 $938.9
 $2,959.6
 $(112.6) $3,785.9
 $451.4
 $4,237.3
Balance at September 30, 2016 $809.8
 $2,831.7
 $(4.5) $3,637.0
 $148.7
 $3,785.7

See Notes to Consolidated Financial Statements

WHITE MOUNTAINS INSURANCE GROUP, LTD.
CONSOLIDATED STATEMENTS OF CASH FLOWS
(Unaudited)
 Three Months Ended March 31, Nine Months Ended September 30,
(Millions) 2017 2016 2017 2016
Cash flows from operations: Unaudited Unaudited    
Net income $33.0
 $19.3
 $581.1
 $465.3
Charges (credits) to reconcile net income to net cash used for operations:  
  
  
  
Net realized and unrealized investment (gains) losses (51.3) (29.5)
Deferred income tax (benefit) expense (1.1) 5.0
Net realized and unrealized investment gains (102.5) (27.2)
Deferred income benefit (6.9) (16.2)
Net income from discontinued operations —
 (1.1) (20.5) (100.9)
Net loss on sale of discontinued operations 1.0
 —
Net gain from sale of discontinued operations, net of tax (552.7) (414.5)
Amortization and depreciation 14.6
 11.4
 25.9
 13.3
Other operating items:    
    
Net change in loss and loss adjustment expense reserves 2.9
 (46.2)
Net change in reinsurance recoverable on paid and unpaid losses 1.4
 26.5
Net change in unearned insurance premiums 20.7
 13.9
 36.2
 20.1
Net change in deferred acquisition costs (3.5) (2.2) (3.5) (2.8)
Net change in ceded unearned premiums (8.2) (6.8)
Net change in funds held under insurance treaties (4.3) (2.8)
Net change in insurance premiums receivable 2.7
 (11.0)
Net change in restricted cash —
 (2.6) —
 5.8
Net change in other assets and liabilities, net (64.0) (19.8) (21.5) (117.6)
Net cash used for operations - continuing operations (56.1) (45.9) (64.4) (174.7)
Net cash used for operations - discontinued operations —
 (40.7)
Net cash used for operations (56.1) (86.6)
Net cash provided from operations - discontinued operations 157.0
 38.1
Net cash provided from (used for) operations 92.6
 (136.6)
Cash flows from investing activities:  
  
  
  
Net change in short-term investments 55.6
 (50.4) (612.2) (82.3)
Sales of fixed maturity and convertible investments 868.5
 202.3
 1,631.2
 2,009.4
Maturities, calls and paydowns of fixed maturity and convertible investments 175.8
 155.9
 178.6
 184.4
Sales of common equity securities 17.7
 767.5
 407.8
 683.0
Distributions and redemptions of other long-term investments 16.5
 3.0
Distributions, settlements and redemptions of other long-term investments 1.3
 10.1
Sales of unconsolidated affiliates and consolidated subsidiaries, net of cash sold 1,131.0
 2,657.2
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 —
 (559.8) 167.7
 (396.6)
Purchases of other long-term investments (22.4) (10.9) (67.7) (36.6)
Purchases of common equity securities (113.4) (86.1) (818.6) (94.7)
Purchases of fixed maturity and convertible investments (957.6) (315.2) (1,189.8) (3,591.5)
Purchases of unconsolidated affiliates and consolidated subsidiaries, net of cash acquired —
 (8.1) —
 (13.7)
Net change in unsettled investment purchases and sales (1.0) 44.3
 (135.6) (113.7)
Net acquisitions of property and equipment (.4) (1.3) 1.0
 (.9)
Net cash provided from investing activities - continuing operations 39.3
 141.2
 694.7
 1,072.5
Net cash provided from investing activities - discontinued operations —
 33.6
 3.0
 269.7
Net cash provided from investing activities 39.3
 174.8
 697.7
 1,342.2
Cash flows from financing activities:  
  
  
  
Draw down of debt and revolving line of credit —
 102.5
 361.0
 352.5
Repayment of debt and revolving line of credit (1.2) —
 (364.6) (401.8)
Proceeds from issuances of common shares —
 3.7
Cash dividends paid to the Company’s common shareholders (4.6) (5.4) (4.6) (5.4)
Common shares repurchased —
 (166.8) (714.6) (860.9)
OneBeacon Ltd. common shares repurchased and retired —
 (10.6)
Distribution to non-controlling interest shareholders (5.1) (4.7) (.9) (.9)
Contributions to discontinued operations —
 (3.0)
Contributions from discontinued operations 45.2
 42.2
Payments of contingent consideration related to purchases of consolidated subsidiaries —
 (7.8) —
 (7.8)
Capital contributions from BAM members 9.6
 6.7
 25.7
 28.2
Acquisition of additional subsidiary shares from non-controlling interest (.7) —
Other financing activities, net (7.6) (7.2) (9.3) (5.8)
Net cash used for financing activities - continuing operations (8.9) (96.3) (662.8) (856.0)
Net cash used for financing activities - discontinued operations —
 (8.3) (61.9) (72.7)
Net cash used for financing activities (8.9) (104.6) (724.7) (928.7)
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 (25.7) (1.0) (32.5) 41.8
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 .9
 1.2
Less: cash held for sale at the end of period —
 2.1
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
Cash balances at beginning of period (excludes restricted cash balances of $0.0 and $5.8 and discontinued operations cash balances of $70.5 and $245.4) 80.2
 72.0
Add: cash held for sale, excluding discontinued operations, at the beginning of period .9
 1.2
Less: cash held for sale, excluding discontinued operations, at the end of period —
 3.8
Cash balances at end of period (excludes restricted cash balances of $0.0 and $0.0 and discontinued operations cash balances of $0.0 and $137.3) $48.6
 $111.2
Supplemental cash flows information:  
 

  
 

Interest paid $(.2) $(.2) $(.5) $(.7)
Net income tax refund from national governments $—
 $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 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, MediaAlpha 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. Also, on July 21, 2016, White Mountains completed its sale of Tranzact Holdings, LLC (“Tranzact”) to an affiliate of Clayton, Dubilier & Rice, LLC. For the three months ended March 31, 2016, Sirius Group and Tranzact have been presented as discontinued operations in the statement of operations and comprehensive income. See 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 March 31, 2017 and December 31, 2016, White Mountains owned 75.7% and 76.1% of OneBeacon Ltd.’s outstanding common shares.
The HG Global/BAM segment consists of HG Global Ltd. and its wholly-owned subsidiaries (“HG Global”) and the consolidated results of Build America Mutual Assurance Company (“BAM”). BAM is the 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 bonds used to finance essential public purposes such as schools, utilities and transportation facilities. BAM is owned by and operated for the benefit of its members, the municipalities that purchase BAM'sBAM’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”). As of March 31,September 30, 2017 and December 31, 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. However, GAAP requires White Mountains to consolidate BAM’s results in its financial statements. BAM’s results are attributed to non-controlling interests.
The MediaAlpha segment consists of QL Holdings LLC and its wholly-owned subsidiary QuoteLab, LLC (collectively “MediaAlpha”). MediaAlpha is an advertising technology company that develops transparent and efficient platforms for the buying and selling of insurance and other vertical-specific performance media (i.e., clicks, calls and leads). MediaAlpha’s exchange technology, machine learning and analytical tools facilitate transparent, real-time transactions between advertisers (buyers of advertising inventory) and publishers (sellers of advertising inventory). MediaAlpha works with 330 advertisers and 280 publishers across a number of insurance (auto, motorcycle, home, renter, health and life) and non-insurance (travel, education, personal finance and home services) verticals.
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”). During the third quarter of 2017, White Mountains revised certain of its previously issued financial statements for amounts relating to Wobi. See Note 16 — “Financial Statement Revisions”. 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 byfully matured on June 30, 2016 and which was liquidated in the third quarter of 2017, and its U.S.-based service provider, White Mountains Financial Services LLC, which was liquidated in the second quarter of 2017 (collectively, “WM Life Re”).
On September 28, 2017, Intact Financial Corporation completed its previously announced acquisition of OneBeacon in an all-cash transaction for $18.10 per share (the “OneBeacon Transaction”). OneBeacon Ltd., an exempted Bermuda limited liability company that owns a family of property and casualty insurance companies (collectively, “OneBeacon”), offers a wide range of insurance products in the United States through independent agencies, regional and national brokers, wholesalers and managing general agencies. On July 21, 2016, White Mountains completed its sale of Tranzact Holdings, LLC (“Tranzact”) to an affiliate of Clayton, Dubilier & Rice, LLC. 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. White Mountains has presented the results of OneBeacon, Tranzact and Sirius Group as discontinued operations in the statement of operations and comprehensive income for all periods prior to each transaction’s completion date. White Mountains has presented OneBeacon’s assets and liabilities as held for sale as of December 31, 2016. On March 7, 2017, White Mountains completed the sale of Star & Shield Services LLC, Star & Shield Risk Management LLC, and Star & Shield Claims Services LLC (collectively “Star & Shield”). and its investment in Star & Shield Insurance Exchange (“SSIE”) surplus notes to K2 Insurance Services, LLC. Star & Shield provides management services for a fee to Star & Shield Insurance Exchange (“SSIE”),SSIE, a reciprocal that is owned by its members, who are policyholders. White Mountains was required to consolidate SSIE in its GAAP financial statements until White Mountains completed the sale of Star & Shield and its investment in SSIE Surplus Notes to K2 Insurance Services, LLC on March 7, 2017.sale. White Mountains has presented Star & Shield’s and SSIE’s assets and liabilities as held for sale as of December 31, 2016. See Note 1715 — “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 2016 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 2016 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$9.3 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-monthnine-month periods ended March 31,September 30, 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 March 31, 2016September 30, 2017 and accordingly, there was no effect to White Mountains’s financial statements upon adoption.

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 significantany 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 March 31,September 30, 2017, thethere was an insignificant amount of unamortized debt issuance costs included in debt is $1.8 million.debt.

Recently Issued Accounting Pronouncements

Stock Compensation
In May 2017, the FASB issued ASU 2017-09, Stock Compensation: Scope of Modification Accounting (ASC 718), which narrows the scope of transactions subject to modification accounting to changes in terms of an award that result in a change in the award’s fair value, vesting conditions or classification. The new guidance becomes effective for fiscal years beginning after December 15, 2017. White Mountains does not expect a material impact from implementation of this guidance.

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), 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 in 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 expecteddoes not expect a material impact from implementation 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 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. This differs from current U.S. GAAP, which delays recognition until it is probable a loss has been incurred. The new guidance is expected to accelerate recognition of credit losses. The types of assets included inwithin the scope of the new guidance includesinclude 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.

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 for 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 securities without readily determinable fair values to identify impairment, and for impaired equity securities 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 measures its portfolio of investment securities at fair value with changes therein recognized through current period earnings and 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 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 new guidance sets forth the steps 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 2014-09.
In August 2015, the FASB issued ASU 2015-14, Revenue from Contracts with Customers, which delays 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 revenueRevenue from customers relates to insurance contracts, whichinvestment income and investments gains and losses are excluded from the scope of ASU 2014-09, as are investment income and investments gains and losses. However, the2014-09. 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 evaluating the new guidance, but does not expect ASU 2014-09 to have a significant effect on recognition of White Mountains’s non-insurance revenues from customers.

Note 2. Significant Transactions

OneBeacon Transaction
On September 28, 2017, White Mountains received $1.3 billion in cash proceeds from the OneBeacon Transaction and recorded a gain of $554.6 million, net of transaction costs. As a result of the OneBeacon Transaction, OneBeacon’s results have been reported as discontinued operations within White Mountains’s GAAP financial statements. See Note 15 — “Held for Sale and Discontinued Operations”.

Sale of Star and& Shield
On March 7, 2017, White Mountains completed its sale of Star & Shield and its investment in SSIE Surplus Notessurplus 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'sMountains’s GAAP financial statements. See Note 1715 — “Held for Sale and Discontinued Operations”.

Acquisition of 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.
On August 1, 2017, White Mountains purchased 37,409 newly-issued preferred shares of Buzzmove for GBP 4.0 million (approximately $5.0 million based upon the foreign exchange spot rate at the date of acquisition) and 5,808 common shares from the company founders for GBP $0.5 million (approximately $0.7 million based upon the spot rate at the date of acquisition). White Mountains ownership share in Buzzmove as of September 30, 2017 was 77.1%.



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'sTranzact’s debt attributable to White Mountains'sMountains’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 86 — “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'sMountains’s book value is as follows:
Gain from sale of Tranzact reported in discontinued operations $51.9
 $51.9
Add back reclassification from continuing operations for the release of a tax valuation allowance 30.2
 30.2
Increase to White Mountains book value from sale of Tranzact $82.1
Increase to White Mountains’s 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 2016state tax payments.expense.
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 1715 — “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. During the third 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 $363.2 million of gain from sale of Sirius Group in discontinued operations and $113.3 million in other comprehensive income from discontinued operations.operations from Sirius Group.
During the third quarter of 2017, White Mountains recorded a $0.8 million reduction to the gain from sale of Sirius Group as a result of a change to the valuation of the accrued incentive compensation payable to Sirius Group employees.
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.
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 within discontinued operations. See Note 1715 — “Held for Sale and Discontinued Operations”.

Sale of Symetra
On February 1, 2016, Symetra Financial Corporation (“Symetra”) closed its merger agreement with Sumitomo Life Insurance Company (“Sumitomo Life”) and White Mountains received proceeds of $658.0 million, or $32.00 per common share. 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. See Note 1412 — “Investments“Investment 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.

MediaAlpha
On 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 paid $7.8 million in
settlement of the final purchase adjustment. After adjustment for the estimated contingent purchase price adjustment, White Mountains recognized 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 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.

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 convertible preferred shares of Wobi.  As of the acquisition date, White Mountains recognized total assets acquired related to Wobi of $13.4 million, including $5.5 million of goodwill and $2.9 million of other intangible assets; and total liabilities assumed of $0.7 million at their estimated acquisition date fair values.
During 2015, White Mountains purchased NIS 79.6 million (approximately $20.7 million based upon the foreign exchange spot rate at the dates of acquisition) of convertible preferred shares of Wobi. In addition, during 2015 White Mountains also purchased NIS 11.8 million (approximately $3.1 million based upon the foreign exchange spot rate at the date 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 assets; 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).
During 2016, White Mountains 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 of both March 31, 2017 and December 31, 2016, 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 months endedMarch 31, 2017 and 2016:
  Three Months Ended
  March 31,
Millions 2017 2016
Gross beginning balance $1,365.6
 $1,389.8
Less beginning reinsurance recoverable on unpaid losses (172.9) (186.0)
Net loss and LAE reserves 1,192.7
 1,203.8
     
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 151.7
 161.2
Prior year losses —
 (.1)
Total incurred losses and LAE 151.7
 161.1
     
Loss and LAE paid relating to:    
Current year losses (21.5) (23.1)
Prior year losses (129.1) (148.6)
Total loss and LAE payments (150.6) (171.7)
     
Less: Deconsolidation of SSIE (1)
 4.4
 —
     
Less: SSIE reserves held for sale at end of the period (1)
 —
 5.3
     
Net ending balance 1,194.1
 1,193.4
Plus ending reinsurance recoverable on unpaid losses 174.7
 150.4
Gross ending balance $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”Symetra”.

Loss and LAE incurred relating to prior year losses for the three months ended March 31, 2017
For the three 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
Entertainmentresulting 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 favorable loss reserve development of $0.1 million. For the three months ended March 31, 2016, OneBeacon did not experience any net loss reserve development on prior accident year reserves, as favorable development from several businesses, including Technology and Accident, was offset by unfavorable development primarily in Healthcare. For the three months ended March 31, 2016, SSIE had net favorable loss reserve development of $0.1 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 March 31, 2017, OneBeacon had $3.4 million and $174.7 million of reinsurance recoverables on paid and unpaid losses. At December 31, 2016, OneBeacon had $6.6 million and $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.
Effective May 1, 2017, OneBeacon renewed its property catastrophe reinsurance program through April 30, 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 5.3.  Investments Securities

White Mountains’s invested assets consistportfolio of investment securities and other long-term investments held for general investment purposes.  The portfoliopurposes consists 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.  Net realized and unrealized investment gains (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 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 (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 March 31,September 30, 2017 and December 31, 2016.
Other long-term investments consist primarily of hedge funds, private equity funds, unconsolidated private capital investments and the OneBeacon Surplus Notes.foreign currency forward contracts.


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 securities and other long- term investments.
Pre-tax net investment income for the three and nine months ended March 31,September 30, 2017 and 2016 consisted of the following:
 Three Months Ended Three Months Ended Nine Months Ended
 March 31, September 30, September 30,
Millions 2017 2016 2017 2016 2017 2016
Investment income:            
Fixed maturity investments $24.5
 $14.5
 $9.8
 $9.3
 $32.9
 $17.4
Short-term investments .3
 .2
 .3
 .2
 .6
 .7
Common equity securities 2.1
 1.2
 2.7
 .5
 7.7
 1.0
Other long-term investments (.1) 2.8
 .1
 —
 .5
 .4
Total investment income 26.8
 18.7
 12.9
 10.0
 41.7
 19.5
Third-party investment expenses (.7) (.8) (.7) (.4) (2.0) (1.3)
Net investment income, pre-tax $26.1
 $17.9
 $12.2
 $9.6
 $39.7
 $18.2


Net Realized and Unrealized Investment Gains (Losses)
Net realized and unrealized investment gains (losses) for the three and nine months ended September 30, 2017 and 2016 consisted of the following:
 Three Months Ended Three Months Ended Nine Months Ended
 March 31, September 30, September 30,
Millions 2017 2016 2017 2016 2017 2016
Net realized investment gains, pre-tax $1.1
 $256.8
 $6.8
 $.7
 $20.8
 $265.0
Net unrealized investment gains (losses), pre-tax 50.2
 (227.3) 25.7
 10.2
 81.7
 (237.8)
Net realized and unrealized investment gains, pre-tax 51.3
 29.5
 32.5
 10.9
 102.5
 27.2
Income tax expense attributable to net realized and
unrealized investment gains
 (7.2) (8.5) (3.9) —
 (9.5) (4.0)
Net realized and unrealized investment gains, after tax $44.1
 $21.0
 $28.6
 $10.9
 $93.0
 $23.2

Net realized investment gains (losses)Realized Investment Gains (Losses)
Net realized investment gains (losses) for the three and nine months ended March 31,September 30, 2017 and 2016 consisted of the following:
 Three Months Ended Three Months Ended Three Months Ended Three Months Ended
 March 31, 2017 March 31, 2016 September 30, 2017 September 30, 2016
Millions 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		 Net
realized gains (losses)		 Net
foreign
currency gains (losses)		 Total net realized
gains (losses)
reflected in
earnings		 Net
realized gains		 Net
foreign
currency gains (losses)		 Total net realized
gains
reflected in
earnings
Fixed maturity investments $(2.2) $.1
 $(2.1) $(1.1) $—
 $(1.1) $.6
 $1.2
 $1.8
 $.3
 $—
 $.3
Short-term investments (.1) —
 (.1) .2
 —
 .2
Common equity securities 1.2
 .1
 1.3
 257.6
 —
 257.6
 4.9
 5.4
 10.3
 .2
 —
 .2
Other long-term investments 1.9
 —
 1.9
 .3
 —
 .3
 2.0
 (7.2) (5.2) —
 —
 —
Net realized investment gains,
pre-tax
 .9
 .2
 1.1
 256.8
 —
 256.8
Net realized investment gains (losses),
pre-tax
 7.4
 (.6) 6.8
 .7
 —
 .7
Income tax expense
attributable to net realized
investment gains
 (.7) —
 (.7) (42.9) —
 (42.9) (.6) —
 (.6) (.1) —
 (.1)
Net realized investment
gains, after tax
 $.2
 $.2
 $.4
 $213.9
 $—
 $213.9
Net realized investment
gains (losses), after tax
 $6.8
 $(.6) $6.2
 $.6
 $—
 $.6
  Nine Months Ended Nine Months Ended
  September 30, 2017 September 30, 2016
Millions Net
realized (losses)
gains		 Net
foreign
currency gains (losses)		 Total net realized
gains (losses)
reflected in
earnings		 Net
realized gains		 Net
foreign
currency gains (losses)		 Total net realized
gains
reflected in
earnings
Fixed maturity investments $(.4) $2.7
 $2.3
 $2.0
 $—
 $2.0
Short-term investments (.1) —
 (.1) .4
 —
 .4
Common equity securities 18.5
 6.0
 24.5
 262.6
 —
 262.6
Other long-term investments 3.0
 (8.9) (5.9) —
 —
 —
Net realized investment gains (losses), pre-tax 21.0
 (.2) 20.8
 265.0
 —
 265.0
Income tax expense attributable to
   net realized investment gains
 (3.6) —
 (3.6) (45.1) —
 (45.1)
Net realized investment
   gains (losses), after tax
 $17.4
 $(.2) $17.2
 $219.9
 $—
 $219.9


Net unrealized investment gains (losses)Unrealized Investment Gains (Losses)
The following table summarizes netNet unrealized investment gains (losses) and changes in the carrying value of investments measured at fair value:value for the three and nine months ended September 30, 2017 and 2016 consisted of the following:
 Three Months Ended Three Months Ended Three Months Ended Three Months Ended
 March 31, 2017 March 31, 2016 September 30, 2017 September 30, 2016
Millions 
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
 
Net
unrealized
 gains (losses)
 
Net
foreign
currency
gains (losses)
 
Total net unrealized gains (losses)
reflected in
earnings
 
Net
unrealized (losses) gains
 Net
foreign
currency gains		 
Total net unrealized (losses) gains
reflected in
earnings
Fixed maturity investments $17.5
 $1.7
 $19.2
 $21.7
 $—
 $21.7
 $2.0
 $5.1
 $7.1
 $(2.0) $—
 $(2.0)
Common equity securities 29.1
 .5
 29.6
 (249.8) 2.4
 (247.4) 26.6
 (3.1) 23.5
 8.5
 .2
 8.7
Other long-term investments 4.2
 .2
 4.4
 (2.0) .4
 (1.6) (2.5) (2.4) (4.9) 3.4
 .1
 3.5
Forward contracts —
 (3.0) (3.0) —
 —
 —
Net unrealized investment gains (losses), pre-tax 50.8
 (.6) 50.2
 (230.1) 2.8
 (227.3) 26.1
 (.4) 25.7
 9.9
 .3
 10.2
Income tax (expense) benefit
attributable to net unrealized
investment gains (losses)		 (6.5) —
 (6.5) 34.4
 —
 34.4
 (3.3) —
 (3.3) .1
 —
 .1
Net unrealized investment
gains (losses), after tax		 $44.3
 $(.6) $43.7
 $(195.7) $2.8
 $(192.9) $22.8
 $(.4) $22.4
 $10.0
 $.3
 $10.3

  Nine Months Ended Nine Months Ended
  September 30, 2017 September 30, 2016
Millions 
Net
unrealized
 gains
 
Net
foreign
currency
gains (losses)
 
Total net unrealized gains (losses)
reflected in
earnings
 
Net
unrealized gains (losses)
 Net
foreign
currency gains		 
Total net unrealized
gains (losses)
reflected in
earnings
Fixed maturity investments $19.4
 $12.6
 $32.0
 $13.3
 $—
 $13.3
Common equity securities 53.5
 —
 53.5
 (256.1) 2.6
 (253.5)
Other long-term investments 9.2
 (13.0) (3.8) 2.1
 .3
 2.4
Net unrealized investment gains (losses), pre-tax 82.1
 (.4) 81.7
 (240.7) 2.9
 (237.8)
Income tax (expense) benefit
  attributable to net unrealized
  investment gains (losses)
 (5.9) —
 (5.9) 41.1
 —
 41.1
Net unrealized investment
   gains (losses), after tax
 $76.2
 $(.4) $75.8
 $(199.6) $2.9
 $(196.7)

The following table summarizes the amount of totalTotal gains (losses) included in earnings attributable to unrealized investment gains (losses) for Level 3 investments for the three and nine months ended March 31,September 30, 2017 and 2016:2016 consisted of the following:
 Three Months Ended Three Months Ended Nine Months Ended
 March 31, September 30, September 30,
Millions 2017 2016 2017 2016 2017 2016
Fixed maturity investments $.2
 $.5
 $—
 $—
 $—
 $.1
Other long-term investments (1.9) 1.1
 (.7) (.9) (2.2) .7
Total unrealized investment (losses) gains, pre-tax - Level 3 investments $(1.7) $1.6
 $(.7) $(.9) $(2.2) $.8


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 March 31,September 30, 2017 and December 31, 2016 were as follows: 
 March 31, 2017 September 30, 2017
Millions 
Cost or
amortized
cost
 
Gross
unrealized
gains
 
Gross
unrealized
losses
 
Net foreign
currency
gains
 
Carrying
value
 
Cost or
amortized
cost
 
Gross
unrealized
gains
 
Gross
unrealized
losses
 
Net foreign
currency
gains
 
Carrying
value
U.S. Government and agency obligations $110.7
 $—
 $(.4) $—
 $110.3
 $218.1
 $.1
 $(.4) $—
 $217.8
Debt securities issued by corporations 1,680.2
 10.5
 (7.6) 3.7
 1,686.8
 608.3
 3.2
 (1.0) 14.5
 625.0
Mortgage and asset-backed securities 389.1
 1.2
 (2.4) —
 387.9
Municipal obligations 328.9
 2.8
 (1.4) —
 330.3
 252.1
 3.1
 (.5) —
 254.7
Mortgage and asset-backed securities 2,020.0
 5.1
 (8.7) —
 2,016.4
Foreign government, agency and provincial obligations 17.3
 .4
 —
 .2
 17.9
 4.5
 —
 (.1) .2
 4.6
Preferred stocks 8.3
 5.4
 —
 —
 13.7
Total fixed maturity investments $4,165.4
 $24.2
 $(18.1) $3.9
 $4,175.4
 $1,472.1
 $7.6
 $(4.4) $14.7
 $1,490.0

 December 31, 2016 December 31, 2016
Millions 
Cost or
amortized
cost
 
Gross
unrealized
gains
 
Gross
unrealized
losses
 
Net foreign
currency
gains
 
Carrying
value
 
Cost or
amortized
cost
 
Gross
unrealized
gains
 
Gross
unrealized
losses
 
Net foreign
currency
gains
 
Carrying
value
U.S. Government and agency obligations $281.7
 $.1
 $(3.5) $—
 $278.3
 $112.1
 $—
 $(1.1) $—
 $111.0
Debt securities issued by corporations 1,512.6
 8.4
 (13.7) 2.1
 1,509.4
 752.0
 2.3
 (10.1) 2.1
 746.3
Mortgage and asset-backed securities 986.9
 .8
 (7.9) —
 979.8
Municipal obligations 308.8
 1.9
 (1.7) —
 309.0
 238.7
 1.1
 (1.3) —
 238.5
Mortgage and asset-backed securities 2,141.7
 2.6
 (11.4) —
 2,132.9
Foreign government, agency and provincial obligations 12.9
 .3
 —
 —
 13.2
 12.0
 .1
 —
 —
 12.1
Preferred stocks 8.3
 5.7
 —
 —
 14.0
Total fixed maturity investments $4,266.0
 $19.0
 $(30.3) $2.1
 $4,256.8
 $2,101.7
 $4.3
 $(20.4) $2.1
 $2,087.7
Less: fixed maturity investments reclassified to assets
held for sale related to SSIE
         (6.6)         (6.6)
Total fixed maturity investments         $4,250.2
         $2,081.1

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 March 31,September 30, 2017 and December 31, 2016 were as follows:
 March 31, 2017 September 30, 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
losses		 
Carrying
value
Common equity securities $537.9
 $65.0
 $(2.4) $.5
 $601.0
 $693.8
 $82.6
 $(2.0) $—
 $774.4
Other long-term investments $321.9
 $39.7
 $(23.3) $(6.6) $331.7
 $254.5
 $13.1
 $(21.2) $(16.8) $229.6
 December 31, 2016 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 $440.8
 $35.9
 $(2.4) $—
 $474.3
 $258.6
 $29.0
 $(2.0) $—
 $285.6
Other long-term investments $314.9
 $40.3
 $(28.0) $(3.9) $323.3
 $194.0
 $7.9
 $(25.2) $(3.9) $172.8


Other Long-term Investments
Other long-term investments consist of the following as of March 31,September 30, 2017 and December 31, 2016: were as follows:
 Carrying Value at Carrying Value at
Millions March 31, 2017 December 31, 2016 September 30, 2017 December 31, 2016
Hedge funds and private equity funds, at fair value $147.2
 $131.0
 $154.9
 $82.6
Private equity securities and limited liability companies, at fair value (1)(2)
 72.4
 72.0
 59.1
 57.6
OneBeacon Surplus Notes, at fair value (1)
 69.6
 71.9
Private convertible preferred securities, at fair value (1)
 30.7
 30.6
 27.2
 30.6
Tax advantaged federal affordable housing development fund (3)
 11.7
 12.3
Partnership investments accounted for under the equity method 3.0
 3.5
Forward Contracts (4.2) (1.2) (15.4) (1.2)
Other 1.3
 3.2
 3.8
 3.2
Total other-long term investments $331.7
 $323.3
 $229.6
 $172.8
(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,September 30, 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 areis generally estimated using the net asset value (“NAV”(“NAV”) of the funds. As of March 31,September 30, 2017, White Mountains held investments in 5two hedge funds and 20ten private equity funds.  The largest investment in a single fund was $54.254.7 million as of March 31,September 30, 2017 and $36.5$21.5 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 March 31,September 30, 2017 and December 31, 2016:
 March 31, 2017 December 31, 2016 September 30, 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 financials $54.2
 $—
 $36.5
 $—
 $54.7
 $—
 $21.5
 $—
Long/short equity REIT 19.7
 —
 19.9
 —
 19.1
 —
 19.9
 —
Other 2.2
 —
 3.4
 —
Total hedge funds 76.1
 —
 59.8
 —
 73.8
 —
 41.4
 —
                
Private equity funds  
  
  
  
  
  
  
  
Manufacturing/Industrial 42.7
 12.1
 19.4
 22.9
Aerospace/Defense/Government 24.4
 23.6
 19.4
 25.9
 28.7
 15.6
 19.4
 25.9
Manufacturing/Industrial 18.8
 22.2
 15.9
 22.4
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 2.8
 3.0
 14.1
 3.2
Private equity secondaries 2.5
 2.1
 3.0
 2.1
Direct lending 6.7
 23.3
 1.4
 28.6
Financial Services 1.5
 4.5
 1.0
 5.0
 3.0
 13.0
 1.0
 5.0
Insurance .9
 41.3
 .8
 41.3
 —
 41.2
 —
 41.2
Real estate .3
 .1
 .3
 .1
Total private equity funds 71.1
 131.2
 71.2
 138.1
 81.1
 105.2
 41.2
 123.6
Total hedge funds and private equity funds
included in other long-term investments
 $147.2
 $131.2
 $131.0
 $138.1
 $154.9
 $105.2
 $82.6
 $123.6
 

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,September 30, 2017, one hedge fund with a fair value of $38.3$54.7 million was subject to a lock-up period that expires on September 1, 2018.
The following table summarizes theMarch 31, 2017 fair value of hedge funds subject to restrictions on redemption frequency and advance notice period requirements for investments in active hedge funds:funds as of September 30, 2017:
  Notice Period
Millions
Redemption frequency
 
30-59 days
notice
 
60-89 days
notice
 
90-119 days
notice
 Total
Monthly $—
 $—
 $—
 $—
Quarterly 15.9
 —
 —
 15.9
Semi-annual 38.3
 19.7
 —
 58.0
Annual —
 —
 2.2
 2.2
Total $54.2
 $19.7
 $2.2
 $76.1
  Notice Period
Millions
Redemption frequency
 
30-59 days
notice
 
60-89 days
notice
 Total
Semi-annual $54.7
 $19.1
 $73.8
 
Certain of
White Mountains’s investmentsMountains has submitted a redemption request for its investment in a long/short equity REIT 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.fund. As of March 31,September 30, 2017,, the hedge funds in liquidation had no value. The actual amountredemption of any final distribution remittances remain$19.1 million is outstanding and is subject to market fluctuations.fluctuation. The date at which such remittances, if any, willbulk of the redemption proceeds are expected to be received is not determinable asin the first quarter of March 31, 2017.

White Mountains has also submitted redemption requests for certain2018 with the balance expected in the second quarter of its investments in active hedge funds.  As of March 31, 2017, redemptions of $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 March 31, 2017. Redemptions are recorded as receivables when the investment is no longer subject to market fluctuations.2018.
Investments in private equity funds are generally subject to a 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 March 31, 2017,The following table summarizes investments in private equity funds that were subject to lock-up periods as follows:of September 30, 2017:
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 $18.4 $23.3 $22.2 $7.2 $71.1 $4.0 $18.2 $33.5 $25.4 $81.1

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 Runoff Transaction”), OneBeacon provided financing in the form of the OneBeacon Surplus Notes with a par value of $101.0 million, which had a fair value of $69.6 million and $71.9 million as of March 31, 2017 and December 31, 2016. Subsequent to closing, the OneBeacon 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 using information as of the measurement date. The estimated fair value of the surplus notes is sensitive to changes in public 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. For the purposes of estimating fair value, OneBeacon has assumed 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 on both the seller priority note and the pari passu note beginning in 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 2030 for the seller priority note and 2035 for the pari passu note. Although these variables involve considerable judgment, OneBeacon 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 OneBeacon Surplus Notes as of March 31, 2017 and December 31, 2016:
  Type of Surplus Note Total as of March 31, 2017 Total as of December 31, 2016
Millions Seller Priority Pari Passu 
Par Value $57.9
 $43.1
 $101.0
 $101.0
Fair value adjustments to reflect:        
Current market rates on public debt and contract-based repayments(1)
 7.2
 1.8
 9.0
 5.1
Regulatory approval (2)
 2.9
 (13.2) (10.3) (15.6)
Liquidity adjustment (3)
 (19.9) (10.2) (30.1) (18.6)
Total adjustments (9.8) (21.6) (31.4) (29.1)
Fair value (4)
 $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 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 delay in securing regulatory approvals of interest and principal payments to reflect graduated changes in Issuer's statutory surplus. The monetary impact of the anticipated delay is measured based on credit spreads of public 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's sole ownership of the notes, lack of a trading market, and unique nature of the ongoing regulatory approval 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 decrease in the fair value of the surplus notes during the three months ended March 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 three months closer to modeled cash receipts.

Fair value measurementsValue Measurements as of March 31,September 30, 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,September 30, 2017 and December 31, 2016, White Mountains used quoted market prices or other observable inputs to determine fair value for approximately 93% and 94% of its investment portfolio. Investments valued using Level 1 inputs include fixed maturity investments, primarily investments in U.S. Treasuries, short-term investments, which include U.S. Treasury Bills and common equity securities. Investments valued using Level 2 inputs are primarily comprised ofinclude fixed maturity investments, which have been disaggregated into classes, including debt securities issued by corporations, municipal obligations, mortgage and asset-backed securities, municipal obligations, and foreign government, agency and provincial obligations and preferred stocks.obligations. Investments valued using Level 2 inputs also include certain passive exchange traded funds (“ETFs”) that track U.S. stock indices such as the S&P 500 but are traded on foreign exchanges, and thatwhich management values using the fund 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. Investments valued using Level 3 fair value estimates are based upon unobservable inputs and include White Mountains’s investments in 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 its 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 services for select 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 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 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 follows:

Debt securities issued by corporations: The fair value of debt securities issued by corporations is determined from a pricing evaluation 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 a pricing evaluation 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 evaluation 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 a pricing evaluation 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 a pricing evaluation 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 the fund manager'smanager’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 interestinvestment in the hedge fund or private equity fund investment.fund. As of March 31,September 30, 2017 and December 31, 2016, White Mountains recorded negativedid not have any adjustments of $1.0 million and $5.0 million to the reported NAV of certainits 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 March 31,September 30, 2017 and December 31, 2016 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 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 97.
 March 31, 2017 September 30, 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 $110.3
 $100.8
 $9.5
 $—
 $217.8
 $217.8
 $—
 $—
                
Debt securities issued by corporations:  
        
      
Consumer 362.9
 —
 362.9
 —
 121.9
 —
 121.9
 —
Utilities 109.3
 —
 109.3
 —
Health Care 85.6
 —
 85.6
 —
Communications 81.7
 —
 81.7
 —
Materials 68.6
 —
 68.6
 —
Financials 263.3
 —
 263.3
 —
 55.6
 —
 50.0
 5.6
Health Care 248.4
 —
 248.4
 —
Utilities 229.3
 —
 229.3
 —
Technology 52.0
 —
 52.0
 —
Industrial 174.5
 —
 174.5
 —
 38.3
 —
 38.3
 —
Communications 135.9
 —
 135.9
 —
Technology 118.1
 —
 118.1
 —
Materials 101.9
 —
 101.9
 —
Energy 52.5
 —
 52.5
 —
 12.0
 —
 12.0
 —
Total debt securities issued by corporations 1,686.8
 —
 1,686.8
 —
 625.0
 —
 619.4
 5.6
                
Mortgage and asset-backed securities 2,016.4
 —
 1,958.1
 58.3
 387.9
 —
 387.9
 —
Municipal obligations 330.3
 —
 330.3
 —
 254.7
 —
 254.7
 —
Foreign government, agency and provincial obligations 17.9
 .6
 17.3
 —
 4.6
 —
 4.6
 —
Preferred stocks 13.7
 —
 13.7
 —
Total fixed maturity investments 4,175.4
 101.4
 4,015.7
 58.3
 1,490.0
 217.8
 1,266.6
 5.6
                
Short-term investments(4)
 230.9
 227.9
 3.0
 —
Short-term investments(1)
 786.5
 764.5
 22.0
 —
                
Common equity securities:  
  
  
  
  
  
  
  
Exchange traded funds (1)
 384.8
 330.6
 54.2
 —
Consumer 32.2
 32.2
 —
 —
Exchange traded funds (2)
 492.5
 434.6
 57.9
 —
Health Care 27.1
 27.1
 —
 —
 17.1
 17.1
 —
 —
Financials 18.2
 18.2
 —
 —
 14.9
 14.9
 —
 —
Consumer 13.0
 13.0
 —
 —
Technology 16.1
 16.1
 —
 —
 11.7
 11.7
 —
 —
Communications 13.9
 13.9
 —
 —
 10.3
 10.3
 —
 —
Industrial 9.0
 9.0
 —
 —
 10.2
 10.2
 —
 —
Energy 7.7
 7.7
 —
 —
 4.0
 4.0
 —
 —
Materials 5.1
 5.1
 —
 —
Utilities 1.0
 1.0
 —
 —
Other 85.9
 —
 85.9
 —
Other(3)
 200.7
 —
 200.7
 —
Total common equity securities 601.0
 460.9
 140.1
 —
 774.4
 515.8
 258.6
 —
                
Other long-term investments (2)(3)
 174.0
 —
 —
 174.0
Other long-term investments (4)(5)
 90.1
 —
 —
 90.1
Total investments $5,181.3
 $790.2
 $4,158.8
 $232.3
 $3,141.0
 $1,498.1
 $1,547.2
 $95.7
(1)Short-term investments are measured at amortized cost, which approximates fair value.
(2) 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)(3) Consists of two investments in unit trusts that primarily invest in international equities.
(4) Excludes carrying value of $3.0 associated with other long-term investment limited partnerships accounted for using the equity method and $(4.2)$(15.4) related to foreign currency forward contracts. Excludes carrying value of $11.7 associated with a tax advantaged federal affordable housing development fund accounted for using the proportional amortization method.
(3)(5) Excludes carrying value of $147.2$154.9 associated with hedge funds and private equity funds for which fair value is measured at NAV using the practical expedient.
(4) Short-term investments are measured at amortized cost, which approximates fair value.

 December 31, 2016 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 $278.3
 $268.8
 $9.5
 $—
 $111.0
 $101.5
 $9.5
 $—
                
Debt securities issued by corporations:  
  
  
  
  
  
  
  
Consumer 385.6
 —
 385.6
 —
 190.8
 —
 190.8
 —
Utilities 140.8
 —
 140.8
 —
Health Care 244.2
 —
 244.2
 —
 114.9
 —
 114.9
 —
Utilities 180.3
 —
 180.3
 —
Financials 176.0
 —
 176.0
 —
 79.7
 —
 79.7
 —
Industrial 146.4
 —
 146.4
 —
Communications 131.4
 —
 131.4
 —
 72.0
 —
 72.0
 —
Materials 102.6
 —
 102.6
 —
 65.0
 —
 65.0
 —
Technology 89.4
 —
 89.4
 —
 48.8
 —
 48.8
 —
Industrial 28.2
 —
 28.2
 —
Energy 53.5
 —
 53.5
 —
 6.1
 —
 6.1
 —
Total debt securities issued by corporations 1,509.4
 —
 1,509.4
 —
 746.3
 —
 746.3
 —
                
Mortgage and asset-backed securities 2,132.9
 —
 2,132.9
 —
 979.8
 —
 979.8
 —
Municipal obligations 309.0
 —
 309.0
 —
 238.5
 —
 238.5
 —
Foreign government, agency and provincial obligations 13.2
 .6
 12.6
 —
 12.1
 —
 12.1
 —
Preferred stocks 14.0
 —
 14.0
 —
Total fixed maturity investments(4)
 4,256.8
 269.4
 3,987.4
 —
Total fixed maturity investments(1)
 2,087.7
 101.5
 1,986.2
 —
                
Short-term investments(4)(5)
 287.1
 274.4
 12.7
 —
Short-term investments(1)(2)
 175.0
 162.3
 12.7
 —
                
Common equity securities:  
  
  
  
  
  
  
  
Exchange traded funds(1)
 321.6
 270.4
 51.2
 —
Exchange traded funds(3)
 157.2
 129.4
 27.8
 —
Health Care 20.9
 20.9
 —
 —
 13.9
 13.9
 —
 —
Consumer 12.9
 12.9
 —
 —
 8.6
 8.6
 —
 —
Financials 11.6
 11.6
 —
 —
 7.7
 7.7
 —
 —
Technology 11.0
 11.0
 —
 —
 7.3
 7.3
 —
 —
Communications 10.5
 10.5
 —
 —
 7.0
 7.0
 —
 —
Energy 3.7
 3.7
 —
 —
 2.5
 2.5
 —
 —
Industrial 2.2
 2.2
 —
 —
 1.5
 1.5
 —
 —
Other 79.9
 —
 79.9
 —
Other(4)
 79.9
 —
 79.9
 —
Total common equity securities 474.3
 343.2
 131.1
 —
 285.6
 177.9
 107.7
 —
                
Other long-term investments (2)(3)
 177.7
 —
 —
 177.7
Total investments(4)
 $5,195.9
 $887.0
 $4,131.2
 $177.7
Other long-term investments (5)(6)
 91.4
 —
 —
 91.4
Total investments(1)
 $2,639.7
 $441.7
 $2,106.6
 $91.4
(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 $3.5 associated with other long-term investment limited partnerships accounted for using the equity method and $(1.2) related to foreign currency forward contracts. Excludes carrying value of $12.3 associated with a tax advantaged federal affordable housing development fund accounted for using the proportional amortization method.
(3) Excludes carrying value of $131.0 associated with hedge funds and private equity funds for which fair value is measured at NAV using the practical expedient.
(4) Includes carrying value of $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)(2) Short-term investments are measured at amortized cost, which approximates fair value.
(3) 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.
(3) Consists of one investment in a unit trust that primarily invests in international equities.
(5) Excludes carrying value of $(1.2) related to foreign currency forward contracts.
(6) Excludes carrying value of $82.6 associated with hedge funds and private equity funds for which fair value is measured at NAV using the practical expedient.






Debt securities issuedSecurities Issued by corporationsCorporations
The following table summarizes the ratings of debt securities issued by corporations held in White Mountains’s investment portfolio as of March 31,September 30, 2017 and December 31, 2016:
 Fair Value at Fair Value at
Millions March 31, 2017 December 31, 2016 September 30, 2017 December 31, 2016
AA 93.1
 100.9
 $26.7
 $37.3
A 484.7
 381.9
 119.4
 212.8
BBB 846.5
 786.5
 291.9
 335.6
BB 240.2
 214.0
 165.4
 143.2
B 22.3
 26.1
 21.6
 17.4
Debt securities issued by corporations(1)(2)
 $1,686.8
 $1,509.4
 $625.0
 $746.3
(1) Credit ratings are assigned based on the following hierarchy: 1)(1) Standard & Poor’s Financial Services LLC ("Standard & Poor's") and 2)(2) Moody's Investor ServicesService, Inc. ("Moody’s").
(2)
Includes carrying value of $4.2 of fixed maturity investments at December 31, 2016 that is classified as assets held for sale related to SSIE.

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,September 30, 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,September 30, 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 ownobligations or any collateralized debt obligations, with the exception of $33.9 million of non-agency RMBS 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.obligations.
The following table summarizes the carrying value of White Mountains’s mortgage and asset-backed securities as of March 31,September 30, 2017 and December 31, 2016:
 March 31, 2017 December 31, 2016 September 30, 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 $249.0
 $249.0
 $—
 $283.9
 $283.9
 $—
 $51.0
 $51.0
 $—
 $70.3
 $70.3
 $—
FNMA 270.1
 270.1
 —
 278.3
 278.3
 —
 88.9
 88.9
 —
 235.5
 235.5
 —
FHLMC 86.1
 86.1
 —
 89.8
 89.8
 —
 59.7
 59.7
 —
 59.5
 59.5
 —
Total Agency(1)
 605.2
 605.2
 —
 652.0
 652.0
 —
 199.6
 199.6
 —
 365.3
 365.3
 —
Non-agency:  
  
  
  
  
  
  
  
  
  
  
  
Residential 309.9
 251.6
 58.3
 205.3
 205.3
 —
 70.1
 70.1
 —
 70.3
 70.3
 —
Commercial 126.9
 126.9
 —
 127.5
 127.5
 —
 39.0
 39.0
 —
 3.9
 3.9
 —
Total Non-agency 436.8
 378.5
 58.3
 332.8
 332.8
 —
 109.1
 109.1
 —
 74.2
 74.2
 —
                        
Total mortgage-backed securities 1,042.0
 983.7
 58.3
 984.8
 984.8
 —
 308.7
 308.7
 —
 439.5
 439.5
 —
Other asset-backed securities:  
      
      
      
    
Credit card receivables 383.0
 383.0
 —
 438.3
 438.3
 —
 40.5
 40.5
 —
 214.2
 214.2
 —
Vehicle receivables 353.0
 353.0
 —
 479.5
 479.5
 —
 22.7
 22.7
 —
 205.9
 205.9
 —
Other 238.4
 238.4
 —
 230.3
 230.3
 —
 16.0
 16.0
 —
 120.2
 120.2
 —
Total other asset-backed securities 974.4
 974.4
 —
 1,148.1
 1,148.1
 —
 79.2
 79.2
 —
 540.3
 540.3
 —
Total mortgage and asset-backed securities $2,016.4
 $1,958.1
 $58.3
 $2,132.9
 $2,132.9
 $—
 $387.9
 $387.9
 $—
 $979.8
 $979.8
 $—
(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 following table summarizes the security issuance years of White Mountains’s investments in non-agency RMBS and non-agency CMBS securities as of March 31, 2017 are as follows:September 30, 2017:
        Security Issuance Year           Security Issuance Year      
Millions Fair Value 2004 2005 2006 2008 2010 2011 2012 2013 2014 2015 2016 2017 Fair Value 2004  2013 2014 2015 2016 2017
Non-agency
RMBS
 $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
 $70.1
 $.3
  $1.3
 $20.6
 $47.9
 $—
 $—
Non-agency
CMBS
 126.9
 —
 —
 —
 —
 4.1
 —
 18.1
 11.5
 23.4
 44.2
 25.6
 —
 39.0
 —
  —
 —
 —
 3.7
 35.3
Total $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
 $109.1
 $.3
  $1.3
 $20.6
 $47.9
 $3.7
 $35.3
 
Non-agency Residential Mortgage-backed Securities
The following table summarizes the classification of the underlying collateral quality and the tranche levels of White Mountains’s non-agency RMBS securities are as follows as of March 31,September 30, 2017:
Millions Fair Value 
Super Senior (1)
 
Senior (2)
 
Subordinate (3)
 Fair Value 
Super Senior (1)
 
Senior (2)
 
Subordinate (3)
Prime $309.9
 $104.9
 $205.0
 $—
 $70.1
 $58.4
 $11.7
 $—
Non-prime —
 —
 —
 —
 —
 —
 —
 —
Sub-prime —
 —
 —
 —
 —
 —
 —
 —
Total $309.9
 $104.9
 $205.0
 $—
 $70.1
 $58.4
 $11.7
 $—
(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, Inc. (“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-termmoderate-term and structurally senior, with more than 2530 points of subordination on average for both fixed rate and floating rate as of March 31,September 30, 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 March 31,September 30, 2017, none of the underlying loans of the non-agency CMBS held by White Mountains were reported as non-performing.
The following table summarizes 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 March 31,September 30, 2017:
Millions Fair Value 
Super Senior (1)
 
Senior (2)
 
Subordinate (3)
 Fair Value 
Super Senior (1)
 
Senior (2)
 
Subordinate (3)
Fixed rate CMBS $115.2
 $1.6
 $70.1
 $43.5
 $17.8
 $—
 $16.2
 $1.6
Floating rate CMBS 11.7
 —
 —
 11.7
 21.2
 —
 —
 21.2
Total $126.9
 $1.6
 $70.1
 $55.2
 $39.0
 $—
 $16.2
 $22.8
(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 March 31,September 30, 2017 and 2016 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 threenine months ended March 31,September 30, 2017 and 2016:
 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
Other long-term
investments
Hedge Funds and Private Equity Funds measured at NAV(3)
 Total 
Balance at January 1, 2017$612.5
$4,118.5
$—
$—
$177.7
$131.0
 $5,039.7
(1)(2)(4) 
$279.5
$2,093.8
$—
$91.4
$82.6
 $2,547.3
(1)(2)(4) 
Total realized and
unrealized gains (losses)
22.4
25.5
.2
—
(1.9)8.2
 54.4
 
Net realized and unrealized gains (losses)52.4
59.8
—
(2.2)15.6
 125.6
 
Amortization/Accretion—
(6.5)—
—
—
—
 (6.5) —
(6.6)—
—
—
 (6.6) 
Purchases124.5
890.4
58.1
—
.2
22.1
 1,095.3
 940.7
1,038.5
31.2
2.9
64.9
 2,078.2
 
Sales(197.1)(866.9)

—
(2.0)(14.1) (1,080.1) (539.0)(1,668.2)(12.5)(2.0)(8.2) (2,229.9) 
Deconsolidation of SSIE—
(5.2)—
—
—
  (5.2) —
(5.2)—
—
—
 (5.2) 
Transfers in—
—
—
—
—
—
 —
  
—
13.1
—
—
—
 13.1
  
Transfers out—
—
—
—
—
—
 —
  
—
—
(13.1)—
—
 (13.1)
  
Balance at
March 31, 2017		$562.3
$4,155.8
$58.3
$—
$174.0
$147.2
 $5,097.6
(1)(2) 
Balance at September 30, 2017$733.6
$1,525.2
$5.6
$90.1
$154.9
 $2,509.4
(1)(2) 
(1)  Excludes carrying value of $3.5$(1.2) and $3.0 at $(15.4) as of January 1, 2017 and March 31,September 30, 2017 associated with other long-term investments accounted for using the equity method and $(1.2) and $(4.2) related to foreign currency forward contracts. Excludes carrying value of $12.3 and $11.7 at January 1, 2017 and March 31, 2017 associated with a tax advantaged federal affordable housing development fund accounted for using the proportional amortization method.
(2)  Excludes carrying value of $287.1175.0 and $230.9$786.5 at January 1, 2017 and March 31,September 30, 2017 associated with short-term investments, of which $0.1 is classified as held for sale at January 1, 2017.
(3) Investments for which fair value is measured at NAV using the practical expedient are no longer classified within the fair value hierarchy. See Note 1 — “Summary of Significant Accounting Policies”.
(4)  Includes carrying value of $6.6 of fixed maturity investments at January 1, 2017 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(3)
Total Level 1 investments
Level 2 
investments
Fixed
maturity investments
Other long-term
investments
Hedge Funds and Private Equity Funds measured at NAV(2)
Total 
Balance at January 1, 2016$1,152.2
$2,531.4
$70.0
$—
$169.5
$127.8
$4,050.9
(1)(2)(4) 
$789.0
$585.6
$—
$103.6
$65.3
$1,543.5
(1)(3) 
Total realized and
unrealized gains (losses)
11.3
19.1
.5
—
1.1
(2.4)29.6
 
Net realized and unrealized gains7.2
17.4
.1
.8
1.7
27.2
 
Amortization/Accretion—
(4.2)—
—
—
—
(4.2) .1
(3.8)—
—
—
(3.7) 
Purchases109.0
292.4
—
—
2.1
8.9
412.4
 1,387.8
2,228.5
70.0
2.2
38.4
3,726.9
 
Sales(852.9)(272.6)—
—
—
(3.0)(1,128.5) (1,992.7)(884.1)—
(.1)(10.1)(2,887.0) 
Transfers in—
—
—
—
—
—
—
 —
68.0
—
—
—
68.0
 
Transfers out—
—
—
—
—
—
—
 —
—
(68.0)—
—
(68.0) 
Balance at
March 31, 2016		$419.6
$2,566.1
$70.5
$—
$172.7
$131.3
$3,360.2
(1)(2)(4) 
Balance at September 30, 2016$191.4
$2,011.6
$2.1
$106.5
$95.3
$2,406.9
(1)(3) 
(1) Excludes carrying value of $3.8$142.0 and $3.7$230.0 at January 1, 2016 and March 31, 2016 associated with other long-term investment limited partnerships accounted for using the equity method. Excludes carrying value of $14.7 and $14.1 at January 1, 2016 and March 31, 2016 associated with a tax advantaged federal affordable housing development fund accounted for using the proportional amortization method.
(2) Excludes carrying value of $211.3 million and $261.7 million at January 1, 2016 and March 31,September 30, 2016 associated with short-term investments of which $0.1 and $0.3$0.1 is classified as held for sale at January 1, 2016 and March 31,September 30, 2016.
(3)(2) Investments for which fair value is measured at NAV using the practical expedient are no longer classified within the fair value hierarchy. See Note 1 — “Summary of Significant Accounting Policies”.
(4)(3)  Includes carrying value of $9.5 and $9.4$8.3 of fixed maturity investments at January 1, 2016 and March 31,September 30, 2016 that is classified as assets held for sale related to SSIE.

Fair Value Measurements — transfers between levelsTransfers Between Levels - Three-month periodNine-month Period ended March 31,September 30, 2017 and 2016
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 threenine months of 2017, two fixed maturity investments classified as Level 3 measurement in the prior period were 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, 2017. These measurements comprise “Transfers out” of Level 3 and “Transfers in” to Level 2 of $13.1 million for the period ended September 30, 2017.
During the first threenine months of 2016, there were notwo fixed maturity investments classified as Level 3 measurements in the prior period that were transferred to Level 2 measurements.


These investments comprise the “Transfers out” of Level 3 and “Transfers in” to Level 2 of $68.0 million for the period ended September 30, 2016.

Significant Unobservable Inputs
The following table 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 March 31,September 30, 2017 and December 31, 2016. The fair value of investments in hedge funds and private equity funds are generally estimated using the NAV of the funds.

Description March 31, 2017 September 30, 2017
$ in millions, except share price 
Rating(6)
 Valuation Technique(s) 
Fair 
Value(1)
 Unobservable Input 
Rating(2)
 Valuation Technique(s) 
Fair 
Value(3)
 Unobservable Input
Non-agency residential mortgage-backed securities AAA Broker pricing $58.3 Broker quote 102.56
Debt securities issued
by corporations (1)
 BBB Broker pricing $5.6 Broker quote-133.792
Private equity security NR Share price of most recent transaction $21.0 Share price-$1.00 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% 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 NR Share price of most recent transaction $3.6 Share price-$2.52
Private convertible preferred security NR Multiple of EBITDA $3.7 EBITDA multiple-6.00 NR Multiple of EBITDA $0.2 EBITDA multiple-6.00
Private convertible preferred security NR Share price of most recent transaction $27.0 Share price-$3.83 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% NR 
Discounted cash flow/
Option pricing method
 $10.4 Discount rate-21.0%
 Time until expiration-4 years Time until expiration-4 years
 Volatility/Standard deviation-50.0% Volatility/Standard deviation-50.0%
 Risk free rate-1.00% 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, 2017, asset type consists 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 net unrealized investment gains (losses) associated with foreign currency; foreign currency effects based on observable inputs.

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
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%
(1) 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
(1) 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 by an additional 250 basis 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.
(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 basis 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 pari passu note.
(4) As of December 31, 2016, 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 December 31, 2016, 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.




Note 6.4. 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.
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.
The following table shows the change in goodwill and other intangible assets:
 Three Months Ended September 30,
 Three Months Ended March 31, 2017 2016
Millions 2017 2016 Goodwill Other intangible assets Total Goodwill Other intangible assets Total
 Goodwill Other intangible assets Total Goodwill Other intangible assets Total
Beginning balance $31.7
 $24.2
 $55.9
 $24.1
 $31.3
 $55.4
 $25.9
 $14.4
 $40.3
 $18.3
 $23.3
 $41.6
Add: Amounts held for sale at
beginning of the period (1)
 —
 —
 —
 —
 .4
 .4
Acquisition of businesses —
 —
 —
 —
 3.9
 3.9
 —
 —
 —
 7.6
 1.1
 8.7
Amortization, including foreign
currency translation
 —
 (2.9) (2.9) —
 (3.1) (3.1) —
 (2.5) (2.5) —
 (2.6) (2.6)
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
 $25.9
 $11.9
 $37.8
 $25.9
 $21.8
 $47.7
  Nine Months Ended September 30,
  2017 2016
Millions Goodwill Other intangible assets Total Goodwill Other intangible assets Total
Beginning balance $25.9
 $19.3
 $45.2
 $18.6
 $26.9
 $45.5
Add: Amounts held for sale at
         beginning of the period (1)
 —
 —
 —
 —
 .4
 .4
Acquisition of businesses 
 
 —
 7.6
 5.0
 12.6
Wobi write off —
 —
 —
 (.3) (2.5) (2.8)
Amortization, including foreign currency translation —
 (7.4) (7.4) —
 (8.0) (8.0)
Ending balance $25.9
 $11.9
 $37.8
 $25.9
 $21.8
 $47.7
(1) See Note 1715 — “Held for Sale and Discontinued Operations”.

The following table is a summary of goodwill and other intangible assets as of September 30, 2017, December 31, 2016, and September 30, 2016:
Millions September 30, 2017 December 31, 2016
Goodwill    
MediaAlpha $18.3
 $18.3
Buzzmove 7.6
 7.6
Total goodwill 25.9
 25.9
Other intangible assets    
MediaAlpha 11.0
 18.3
Buzzmove .9
 1.0
Total other intangible assets 11.9
 19.3
Total goodwill and other intangible assets 37.8
 45.2
Goodwill and other intangible assets held for sale —
 1.2
Goodwill and other intangible assets attributed to non-controlling interests (13.7) (17.1)
Goodwill and other intangible assets included in White Mountains's
common shareholders' equity		 $24.1
 $29.3


Note 7.5.  Debt
 
White Mountains’s debt outstanding as of March 31,September 30, 2017 and December 31, 2016 consisted of the following:
Millions March 31,
2017		 
Effective
  Rate (1)
 December 31,
2016		 
Effective
  Rate (1)
 September 30,
2017		 
Effective
  Rate (1)
 December 31,
2016		 
Effective
  Rate (1)
WTM Bank Facility $—
 N/A $—
 N/A $—
 N/A $—
 N/A
OBH Senior Notes, at face value 275.0
 4.7% 275.0
 4.7%
Unamortized original issue discount and debt issuance costs (1.8) (1.8) 
OBH Senior Notes, carrying value 273.2
 273.2
 
OneBeacon Bank Facility —
 N/A —
 N/A
Unamortized issue costs —
 —
 
WTM Bank Facility, carrying value —
 —
 
MediaAlpha Bank Facility 11.7
 6.1% 12.9
 5.7% 9.4
 5.5% —
 N/A
Unamortized issuance cost (.2) (.2)  —
 —
 
MediaAlpha Bank Facility, carrying value 11.5
 12.7
  9.4
 —
 
Previous MediaAlpha Bank Facility —
 N/A 12.9
 5.7%
Unamortized issuance cost —
 (.2) 
Previous MediaAlpha Bank Facility, carrying value —
 12.7
 
Total debt $284.7
 $285.9
  $9.4
 $12.7
 
 (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 third quarter of 2017, White Mountains borrowed $350.0 million under the WTM Bank Facility to partially fund a tender offer and subsequently repaid the $350 million after receiving the proceeds from the OneBeacon Transaction. As of March 31,September 30, 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 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,May 12, 2017, MediaAlpha entered into a secured credit facility (the “MediaAlpha Bank Facility”) with OpusWestern Alliance Bank, which has a total commitment of $20.0 million and has a maturity date of July 23, 2019 (the “MediaAlpha Bank Facility”).May 12, 2020.  The MediaAlpha Bank Facility consistsreplaced MediaAlpha’s previous credit facility (the “Previous MediaAlpha Bank Facility”), which had a total commitment of a $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 is undrawn as of March 31, 2017. During the three months ended March 31, 2017, MediaAlpha repaid $1.2 million under the term loan facility.$20.0 million. 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% on the term loan facility and 0.25% on the revolving credit facility as of March 31,September 30, 2017.
The MediaAlpha Bank Facility consists of a $5.0 million term loan facility, which has an outstanding balance of $3.4 million as of September 30, 2017, and a revolving loan facility for $15.0 million, which has an outstanding balance of $6.0 million as of September 30, 2017. During the nine months ended September 30, 2017, MediaAlpha borrowed $5.0 million on the term loan and $6.0 million on the revolving loan under the MediaAlpha Bank Facility. During the nine months ended September 30, 2017, MediaAlpha repaid $12.9 million under the Previous MediaAlpha Bank Facility and $1.6 million on the term loan under the MediaAlpha Bank Facility.
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 leveragefixed charge coverage ratio and an asset coverage ratio.

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


Note 8.6.  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 subsidiaries and branches are subject to tax are Barbados, Gibraltar, Ireland, Israel, Luxembourg, the Netherlands, the United Kingdom and the United States.
White Mountains’ 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 March 31, 2017 was 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 and nine months ended March 31, 2016,September 30, 2017 represented a net effective tax raterates of (114.1)(47.6)% and (203.9)%. As noted below, theThe effective tax rate for the three months ended March 31, 2016 was impacted 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 asrates were different from the U.S. statutory rate of 35%, primarily due to a full valuation allowance on all U.S. operations, a tax benefit recorded at BAM and consolidated pre-tax income being near break-even.  For the three and nine months ended September 30, 2017, BAM had amounts recorded in shareholders’ equity related to member surplus contributions that were available to partially offset its loss from continuing operations.  As a result, for the three and nine months ended September 30, 2017, BAM recorded a tax benefit of $2.1 million and $6.9 million in net income from continuing operations, with an offsetting amount recorded in shareholders’ equity.
White Mountains’s income tax benefit related to pre-tax loss from continuing operations for the three and nine months ended September 30, 2016 represented effective tax rates of (123.9)% and (31.2)%. The effective tax rates were different from the U.S. statutory rate of 35%, primarily due to a tax benefit recorded at BAM and 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. For the three and nine months ended September 30, 2016, BAM had amounts recorded in shareholders’ equity related to member surplus contributions that were available to partially offset its loss from continuing operations. As a result, for the three and nine months ended September 30, 2016, BAM recorded a tax benefit of $3.3 million and $8.2 million in net income from continuing operations, with an offsetting amount recorded in shareholders’ equity.
In arriving at the effective tax rate for the three and nine months ended March 31,September 30, 2017 and 2016, 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, 2017 and 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 2013.


Note 9.7. 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 JuneSeptember 30, 2016. The reinsurance agreement was commuted in December 2016. WM Life Re was liquidated in the third quarter of 2017.
The following table summarizes the pre-tax operating results of WM Life Re for the three and nine months ended March 31,September 30, 2016.
Three Months Ended
March 31, Three Months Ended Nine Months Ended
Millions 2016 September 30, 2016 September 30, 2016
Fees, included in other revenue $1.0
 $—
 $1.2
Change in fair value of variable annuity liability,
included in other revenue
 (.4) —
 (.3)
Change in fair value of derivatives, included in other revenue (1.7) —
 (2.0)
Foreign exchange, included in other revenue .9
 —
 1.4
Other investment income and losses —
Total revenue (.2) —
 .3
Death benefit claims paid, included in general and administrative expenses (.1) —
 (.3)
General and administrative expenses (.8) (.5) (2.4)
Pre-tax loss $(1.1) $(.5) $(2.4)
 
The following summarizes realized and unrealized derivative gains (losses) recognized in other revenue for the three and nine months ended March 31,September 30, 2016 and the carrying values, included in other assets, as of December 31, 2016 by type of instrument:
 Gains (losses) 
 Three Months Ended Carrying Value Gains (losses) Carrying Value
 March 31, As of Three Months Ended Nine Months Ended As of
Millions 2016 December 31, 2016 September 30, 2016 September 30, 2016 December 31, 2016
Fixed income/interest rate $1.8
 $—
 $—
 $1.8
 $—
Foreign exchange (4.2) —
 —
 (4.8) —
Equity .7
 —
 —
 1.0
 —
Total $(1.7) $—
 $—
 $(2.0) $—

The following tables summarize the changes in White Mountains’s variable annuity reinsurance liabilities and derivative instruments for the threenine months ended March 31,September 30, 2016.
 Three Months Ended March 31, 2016 Nine Months Ended September 30, 2016
 
Variable Annuity
Liabilities
 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 $.3
 $2.7
 $16.5
 $.9
 $20.1
 $.3
 $2.7
 $16.5
 $.9
 $20.1
Purchases —
 —
 —
 —
 —
 —
 —
 —
 —
 —
Realized and unrealized (losses) gains (.4) 1.2
 1.1
 (4.0) (1.7) (.3) 2.9
 (.7) (4.2) (2.0)
Transfers in —
 —
 —
 —
 —
 —
 —
 —
 —
 —
Sales/settlements —
 (1.3) (7.3) 3.3
 (5.3) —
 (5.6) (15.8) 3.3
 (18.1)
End of period $(.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.
    

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.
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:
  March 31, 2016
Millions 
Gross asset amounts before offsets (1)
 Gross liability amounts offset under master netting arrangements Net amounts recognized in Other Assets
Interest rate contracts      
OTC $2.2
 $(2.5) $(.3)
Foreign exchange contracts      
OTC 12.7
 —
 12.7
Exchange traded —
 (.1) (.1)
Equity contracts      
OTC 1.5
 (.9) .6
Exchange traded .3
 (.1) .2
Total(2)
 $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 derivatives instruments and no exposure to credit losses on OTC and exchanged traded derivatives 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 March 31, 2016:
  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)
JP Morgan $6.5
 $—
 $—
 $6.5
 $—
 $—
 $5.4
 $1.1
 A+
Bank of America 1.4
 —
 —
 1.4
 —
 —
 —
 1.4
 A
Citigroup - OTC 5.0
 —
 —
 5.0
 —
 —
 .5
 4.5
 A 
Citigroup -
Exchange Traded
 .2
 —
 —
 .2
 7.9
 —
 —
 8.1
 A 
   Total $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 MountainsMountains’s investment portfolio containsincludes certain investment grade fixed maturity investments denominated in British Pound Sterling (GBP) and common equity securities denominated in Japanese Yen (JPY), Euro (EUR)., GBP and other foreign currencies. White Mountains has entered into foreign currency forward contracts to manage its GBP and EUR foreign currency exposure.exposure related to these investments. The contracts do not meet the criteria to be accounted for as a hedge. White Mountains monitorsactively manages its exposure tonet foreign currency exposure and adjusts its foreign currency positions within the risk guidelines and ranges established by senior management. While White Mountains actively manages its foreignMismatches between currency positions, mismatches betweendriven movements in foreign currency ratesdenominated investments and its foreign currency forward contractcontracts may result in net foreign currency positions being outside pre-defined ranges and/or may result in net foreign currency losses.gains/(losses). At March 31,September 30, 2017, White Mountains held $299.9$261.8 million (GBP 200.0160.7 million, EUR 18.9 million and EUR 50.0JPY 2,646.4 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 havehas been estimated using OTC quotes for similar instruments and accordingly, the measurements have been classified as Level 2 measurements at March 31,as of September 30, 2017.
The net realized derivative loss recognized in net realized and unrealized investment gains (losses) for the three and nine months ended September 30, 2017 was $7.2 million and $8.9 million. The net unrealized derivative loss recognized in net realized and unrealized investment gains (losses) for the periodthree and nine months ended March 31,September 30, 2017 was $3.0$2.8 million and $14.2 million. White Mountains’s forward contracts are subject to master netting agreements. As of March 31,September 30, 2017 and December 31, 2016, there were no offsets to the gross liability amount offset under the master netting agreement and the resulting net amount recognized in other long-term investments was $(4.2)$15.4 million and $(1.2)$1.2 million.
White Mountains does not hold or provide any collateral under its forward contracts.  The following table summarizes the gross notional amount and the uncollateralized balance associated with the forward currency contracts:contracts as of September 30, 2017:
 March 31, 2017 September 30, 2017
Millions Notional Amount Carrying Value 
Standard & Poor's
 Rating (1)
 Notional Amount Carrying Value 
Standard & Poor's Rating (1)
Barclays Bank PLC $247.2
 $(3.2) A- $201.3
 $(14.1) A-
JP Morgan 52.7
 (1.0) A-
JP Morgan Chase Bank N.A. 60.5
 (1.3) A+
Total $299.9
 $(4.2)  $261.8
 $(15.4) 
(1) Standard & Poor’s ratings as detailed above are: “A+” (Strong, which is the fifth highest of twenty-three creditworthiness ratings) and “A-” (Strong, which is the ninthseventh highest of twenty-onetwenty-three creditworthiness ratings).


Note 10.8. 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 March 31,September 30, 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 $467.4 million at 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 ended March 31,September 30, 2017, HG Global had pre-tax income of $6.6$7.0 million and $20.3 million, which included $4.8 million and $14.3 million of interest income on the BAM Surplus Notes. For the three and nine months ended March 31,September 30, 2016, HG Global had pre-tax income of $7.3$5.2 million and $18.4 million, which included $4.5 million and $13.4 million of interest income on the BAM Surplus Notes.
For the three and nine months ended March 31,September 30, 2017, White Mountains reported pre-tax losses of $12.211.9 million and $35.6 million on BAM that were recorded in net loss attributable to non-controlling interests, which included $4.8 million and $14.3 million of interest expense on the BAM Surplus Notes. For the three and nine months ended March 31,September 30, 2016, White Mountains reported pre-tax losses of $7.6$13.7 million and $30.3 million on BAM that were recorded in net loss attributable to non-controlling interests, which included $4.5 million and $13.4 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%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% and 3.78% for 2016 and 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%. No payment of interest or principal on the BAM is requiredSurplus Notes may be made without the approval of the New York State Department of Financial Services. BAM has stated its intention to seek regulatory approval to pay interest and principal on its surplus notes only when adequateto the extent that (1) its remaining qualified statutory capital (“QSC”) exceeds $500 million and (2) its remaining QSC and other capital resources have accumulated beyond BAM’s initial capitalization and a level that continuescontinue to support its outstanding obligations, business plan and ratings.its AA stable rating from S&P.
During the second quarter of 2017, in order to further support BAM’s long-term capital position and business prospects, HG Global agreed to contribute the $203.0 million Series A BAM Surplus Notes (“Series A Notes”) into the supplemental collateral trust (the “Supplemental Trust”) at HG Re, HG Global’s wholly owned reinsurance subsidiary. The Supplemental Trust already holds the $300.0 million Series B BAM Surplus Notes (“Series B Notes” and, collectively with the Series A Notes, the “BAM Surplus Notes”). Assets held in the Supplemental Trust serve to collateralize HG Re’s obligations to BAM under the first loss reinsurance treaty between BAM and HG Re. HG Global and BAM also agreed to change the payment terms of the Series B Notes, so that payments will reduce principal and accrued interest on a pro rata basis, consistent with the payment terms on the Series A Notes. The terms of the Series B Notes had previously stipulated that payments would first reduce interest owed, then reduce principal owed once all accrued interest had been paid. The New York Department of Financial Services approved the change during the third quarter of 2017.
During the second quarter of 2017, HG Global and BAM also made certain changes to the ceding commission arrangements under the reinsurance treaty between HG Re and BAM. These changes will accelerate growth in BAM’s statutory capital but will not impact the net risk premium ceded from BAM to HG Re. 

Under GAAP, if the terms of a debt instrument are amended, unless there is a greater than 10% change in the expected discounted future cash flows of such instrument, a change in the instrument’s carrying value is not permitted. White Mountains has determined that the impact of the changes made in the second quarter of 2017 to the terms of the BAM Surplus Notes on the expected discounted future cash flows is not greater than 10%.
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:
 March 31, 2017 December 31, 2016 September 30, 2017 December 31, 2016
Contracts outstanding 5,191
 4,807
 5,907
 4,807
Remaining weighted average contract period outstanding (in years) 10.8
 10.8
 10.9
 10.8
Contractual debt service outstanding (in millions):        
Principal $35,222.1
 $33,057.3
 $39,207.5
 $33,057.3
Interest 17,589.9
 16,396.6
 19,681.0
 16,396.6
Total debt service outstanding $52,812.0
 $49,453.9
 $58,888.5
 $49,453.9
        
Gross unearned insurance premiums $99.8
 $83.0
 $118.5
 $82.9

The following table is a schedule of BAM’s future premium revenues as of March 31,September 30, 2017:
Millions March 31, 2017 September 30, 2017
April 1, 2017 - December 31, 2017 $6.3
October 1, 2017 - December 31, 2017 $2.5
    
January 1, 2018 - March 31, 2018 2.1
 2.5
April 1, 2018 - June 30, 2018 2.0
 2.5
July 1, 2018 - September 30, 2018 2.0
 2.5
October 1, 2018 - December 31, 2018 2.0
 2.4
 8.1
 9.9
    
2019 7.8
 9.5
2020 7.4
 9.2
2021 7.0
 8.7
2022 and thereafter 63.2
 78.7
Total gross unearned insurance premiums $99.8
 $118.5


Note 11.9. Earnings Per Share
 
White Mountains calculates earnings per share using the two-class method, which allocates earnings between common shares and unvested restricted common shares. Both classes of shares participate equally in earnings on a per share basis. Basic earnings per share amounts are based on the weighted average number of common shares outstanding includingadjusted for unvested restricted shares that are considered participating securities.common shares. Diluted earnings per share amounts are based on the weighted average number of common shares including unvested restricted shares andalso impacted by 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 ended March 31,September 30, 2017 and 2016. See Note 1715 — “Held for Sale and Discontinued Operations”.
 Three Months Ended Three Months Ended Nine Months Ended
 March 31, September 30, September 30,
 2017 2016 2017 2016 2017 2016
Basic and diluted earnings per share numerators (in millions):          
  
Net income attributable to White Mountains’s common shareholders $562.1
 $90.8
 $604.7
 $440.7
Less: total income from discontinued operations, net of tax (539.1) (84.4) (573.2) (515.4)
Net income (loss) from continuing operations attributable to
White Mountains’s common shareholders
 $35.3
 $11.9
 $23.0
 $6.4
 $31.5
 $(74.7)
Allocation of income for unvested restricted common shares (.4) (.1)
Dividends declared on participating restricted common shares(1)
 (.1) (.1)
Total allocation to restricted common shares (.5) (.2)
Net income (loss) attributable to White Mountains’s common shareholders,
net of restricted common share amounts
 $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
 $34.8
 $11.7
Dividends declared net of restricted common share amounts(1)
 (4.5) (5.9)
Total undistributed net earnings, net of restricted common share amounts $30.3
 $5.8
Allocation of earnings to participating restricted common shares(1)
 (.3) (.1) (.4) .8
Basic and diluted earnings per share numerators $22.7
 $6.3
 $31.1
 $(73.9)
Basic earnings per share denominators (in thousands):            
Total average common shares outstanding during the period(3) 4,564.6
 5,539.6
Average unvested restricted shares(2)
 (52.5) (54.0)
Total average common shares outstanding during the period 4,297.2
 4,867.4
 4,477.0
 5,166.6
Average unvested restricted common shares(2)
 (53.7) (68.1) (54.5) (62.9)
Basic earnings per share denominator 4,512.1
 5,485.6
 4,243.5
 4,799.3
 4,422.5
 5,103.7
Diluted earnings per share denominator (in thousands):            
Total average common shares outstanding during the period(3)
 4,564.6
 5,540.5
 4,297.2
 4,879.4
 4,477.0
 5,174.8
Average unvested restricted common shares(2)
 (52.5) (54.0) (53.7) (68.1) (54.5) (62.9)
Diluted earnings per share denominator(3)
 4,512.1
 5,486.5
 4,243.5
 4,811.3
 4,422.5
 5,111.9
Basic earnings per share (in dollars):    
Basic earnings per share (in dollars) - continuing operations:        
Net income (loss) attributable to White Mountains’s common shareholders $7.72
 $2.14
 $5.36
 $1.31
 $7.03
 $(14.47)
Dividends declared and paid (1.00) (1.00) —
 —
 (1.00) (1.00)
Undistributed earnings $6.72
 $1.14
Diluted earnings per share (in dollars):    
Undistributed earnings (loss) $5.36
 $1.31
 $6.03
 $(15.47)
Diluted earnings per share (in dollars) - continuing operations:        
Net income (loss) attributable to White Mountains’s common shareholders $7.72
 $2.14
 $5.36
 $1.31
 $7.03
 $(14.47)
Dividends declared and paid (1.00) (1.00) —
 —
 (1.00) (1.00)
Undistributed earnings $6.72
 $1.14
Undistributed earnings (loss) $5.36
 $1.31
 $6.03
 $(15.47)
(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. See Note 1513 — “Employee Share-Based Compensation Plans”.
(3) The diluted earnings per share denominator for the three and nine months ended March 31,September 30, 2016 includes the impact of 125,000120,000 common shares issuable upon exercise of the non-qualified options outstanding, which resulted in 88211,943 and 8,208 incremental shares outstanding over the period. The incremental shares had an effect on diluted earning per share of less than $0.01.










The following table summarizes the undistributed net earnings (loss) from continuing operations for the three and nine months ended September 30, 2017 and 2016. See Note 15 — “Held for Sale and Discontinued Operations”.

  Three Months Ended Nine Months Ended
  September 30, September 30,
Millions 2017 2016 2017 2016
Undistributed net earnings - continuing operations:        
Net income (loss) attributable to White Mountains’s common shareholders,
     net of restricted common share amounts
 $22.7
 $6.3
 $31.1
 $(73.9)
Dividends declared net of restricted common share amounts (1)
 —
 —
 (4.5) (5.9)
Total undistributed net earnings (loss), net of restricted common
     share amounts
 $22.7
 $6.3
 $26.6
 $(79.8)
(1) Restricted shares issued by White Mountains receive dividends, and therefore, are considered participating securities.

Note 12.10. 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 March 31,September 30, 2017 and December 31, 2016:
 March 31, 2017 December 31, 2016 September 30, 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. 24.3% $250.7
 23.9% $244.6
 —% $—
 23.9% $244.6
 

 

 

 

 

 

 

 

Other, excluding mutuals and reciprocals                
HG Global 3.1
 16.5
 3.1
 16.6
 3.1
 16.1
 3.1
 16.6
MediaAlpha 40.0
 11.0
 40.0
 11.7
 40.0
 9.5
 40.0
 11.7
Buzzmove 22.9
 3.0
 29.1
 2.9
Wobi 5.0
 1.0
 5.0
 .7
 5.0
 —
 5.0
 .1
Dewar 18.8
 3.4
 18.8
 3.9
Buzzmove 29.1
 2.8
 29.1
 2.9
Dewar (1)
 —
 —
 18.8
 3.9
Total other, excluding mutuals and reciprocals   34.7
   35.8
   28.6
   35.2
Mutuals and reciprocals                
BAM 100.0
 (153.0) 100.0
 (150.9) 100.0
 (160.2) 100.0
 (150.9)
SSIE —
 —
 100.0
 4.4
 —
 —
 100.0
 4.4
Total mutuals and reciprocals   (153.0)   (146.5)   (160.2)   (146.5)
Total non-controlling interests 

 $132.4
   $133.9
 

 $(131.6)   $133.3
(1) Dewar is a subsidiary of OneBeacon.


Note 13.11. Segment Information
 
White Mountains has determined that its reportable segments are OneBeacon, HG Global/BAM, MediaAlpha and Other Operations. As a result of the Sirius Group and Tranzact sales and the OneBeacon Transaction, the results of operations for Sirius Group and OneBeacon, previously reported in itstheir own segment,respective segments, 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. Beginning in the second quarter of 2017, MediaAlpha’s results have been presented as a separate segment within White Mountains’s consolidated financial statements. Prior year amounts have been reclassified to conform to the current period’s presentation. See Note 1715 — “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 March 31, 2017  
      
  
Earned insurance premiums $261.8
 $1.5
 $.5
 $1.0
 $264.8
Net investment income 12.2
 .6
 2.0
 11.3
 26.1
Net investment income (loss) - surplus note interest —
 4.8
 (4.8) —
 —
Net realized and unrealized investment gains 15.0
 .3
 1.0
 35.0
 51.3
Other revenue 3.4
 —
 .4
 39.9
(2) 
43.7
Total revenues 292.4
 7.2
 (.9) 87.2
 385.9
Losses and LAE 150.6
 —
 —
 1.1
 151.7
Insurance acquisition expenses 45.3
 .3
 .9
 .1
 46.6
Other underwriting expenses 51.7
 —
 .1
 —
 51.8
General and administrative expenses 4.7
 .3
 10.3
 76.0
(3) 
91.3
Amortization of other intangible assets .3
 —
 —
 2.6
 2.9
Interest expense 3.3
 —
 —
 .4
 3.7
Total expenses 255.9
 .6
 11.3
 80.2
 348.0
Pre-tax income (loss) $36.5
 $6.6
 $(12.2) $7.0
 $37.9


   HG Global/BAM     HG Global/BAM      
Millions OneBeacon HG 
BAM(1)
 Other Operations Total HG Global 
BAM(1)
 MediaAlpha Other Operations Total
Three Months Ended March 31, 2016  
      
  
Three Months Ended September 30, 2017          
Earned insurance premiums $278.6
 $.9
 $.3
 $2.3
 $282.1
 $1.8
 $.6
 $—
 $—
 $2.4
Net investment income 14.4
 .5
 1.6
 1.4
 17.9
 1.0
 2.3
 —
 8.9
 12.2
Net investment income (loss) - surplus note interest —
 4.5
 (4.5) —
 —
Net investment income (loss) - BAM Surplus Note interest 4.8
 (4.8) —
 —
 —
Net realized and unrealized investment gains 16.6
 2.1
 4.9
 5.9
 29.5
 .1
 .7
 —
 31.7
 32.5
Advertising and commission revenues —
 —
 37.9
 .9
 38.8
Other revenue .9
 —
 .1
 38.8
(2) 
39.8
 —
 .2
 —
 1.4

1.6
Total revenues 310.5
 8.0
 2.4
 48.4
 369.3
 7.7
 (1.0) 37.9
 42.9
 87.5
Losses and LAE 158.8
 —
 —
 2.3
 161.1
Insurance acquisition expenses 51.0
 .2
 .7
 .8
 52.7
 .4
 .5
 —
 —
 .9
Other underwriting expenses 55.3
 —
 .1
 —
 55.4
 —
 .1
 —
 —
 .1
Cost of sales —
 —
 32.2
 .9
 33.1
General and administrative expenses 3.6
 .5
 9.2
 70.7
(3) 
84.0
 .3
 10.3
 6.1
 27.4

44.1
Amortization of other intangible assets .3
 —
 —
 2.8
 3.1
Interest expense 3.3
 —
 —
 1.2
 4.5
 —
 —
 .1
 .8
 .9
Total expenses 272.3
 .7
 10.0
 77.8
 360.8
 .7
 10.9
 38.4
 29.1
 79.1
Pre-tax income (loss) $38.2
 $7.3
 $(7.6) $(29.4) $8.5
 $7.0
 $(11.9) $(.5) $13.8
 $8.4
(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.

  HG Global/BAM      
Millions HG Global 
BAM(1)
 MediaAlpha Other Operations Total
Nine Months Ended September 30, 2017          
Earned insurance premiums $5.0
 $1.6
 $—
 $1.0
 $7.6
Net investment income 2.4
 6.5
 —
 30.8
 39.7
Net investment income (loss) - BAM Surplus Note interest 14.3
 (14.3) —
 —
 —
Net realized and unrealized investment gains .4
 2.8
 —
 99.3
 102.5
Advertising and commission revenues —
 —
 101.2
 2.7
 103.9
Other revenue —
 .8
 —
 5.3
 6.1
     Total revenues 22.1
 (2.6) 101.2
 139.1
 259.8
Losses and loss adjustment expenses —
 —
 —
 1.1
 1.1
Insurance acquisition expenses 1.0
 2.0
 —
 .1
 3.1
Other underwriting expenses —
 .3
 —
 —
 .3
Cost of sales —
 —
 86.0
 2.7
 88.7
General and administrative expenses .8
 30.7
 17.9
 112.8
 162.2
Interest expense —
 —
 .6
 1.2
 1.8
     Total expenses 1.8
 33.0
 104.5
 117.9
 257.2
Pre-tax income (loss) $20.3
 $(35.6) $(3.3) $21.2
 $2.6
(2)(1) Includes $32.5 from MediaAlpha forBAM 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 three months ended March 31, 2017, and $32.7 from MediaAlpha forsurplus notes. BAM’s statutory surplus is reduced only after a payment of principal or interest has been approved by the three months ended March 31, 2016.New York Department of Financial Services.
  HG Global/BAM      
Millions HG Global 
BAM(1)
 MediaAlpha Other Operations Total
Three Months Ended September 30, 2016          
Earned insurance premiums $1.2
 $.3
 $—
 $1.9
 $3.4
Net investment income .6
 1.7
 —
 7.3
 9.6
Net investment income (loss) - BAM Surplus Note interest 4.5
 (4.5) —
 —
 —
Net realized and unrealized investment (losses) gains (.3) (1.6) —
 12.8
 10.9
Advertising and commission revenues —
 —
 27.6
 .6
 28.2
Other revenue —
 .4
 —
 4.3
 4.7
     Total revenues 6.0
 (3.7) 27.6
 26.9
 56.8
Losses and loss adjustment expenses —
 —
 —
 2.2
 2.2
Insurance acquisition expenses .2
 .6
 —
 .5
 1.3
Other underwriting expenses —
 .1
 —
 .1
 .2
Cost of sales —
 —
 23.0
 1.0
 24.0
General and administrative expenses .6
 9.3
 5.7
 26.8
 42.4
Interest expense —
 —
 .2
 .3
 .5
     Total expenses .8
 10.0
 28.9
 30.9
 70.6
Pre-tax income (loss) $5.2
 $(13.7) $(1.3) $(4.0) $(13.8)
(3)(1) Includes $30.9 from MediaAlpha forBAM 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 three months ended March 31, 2017,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.


  HG Global/BAM      
Millions HG Global 
BAM(1)
 MediaAlpha Other Operations Total
Nine Months Ended September 30, 2016      
    
Earned insurance premiums $3.1
 $1.0
 $—
 $6.1
 $10.2
Net investment income 1.6
 5.1
 —
 11.5
 18.2
Net investment income (loss) - BAM Surplus Note interest 13.4
 (13.4) —
 —
 —
Net realized and unrealized investment gains 2.3
 6.5
 —
 18.4
 27.2
Advertising and commission revenues —
 —
 88.4
 1.2
 89.6
Other revenue —
 .8
 —
 17.2
 18.0
     Total revenues 20.4
 —
 88.4
 54.4
 163.2
Losses and loss adjustment expenses —
 —
 —
 6.8
 6.8
Insurance acquisition expenses .6
 1.9
 —
 1.9
 4.4
Other underwriting expenses —
 .3
 —
 .1
 .4
Cost of sales —
 —
 74.0
 2.9
 76.9
General and administrative expenses 1.4
 28.1
 16.3
 99.1
 144.9
Interest expense —
 —
 .7
 1.9
 2.6
      Total expenses 2.0
 30.3
 91.0
 112.7
 236.0
Pre-tax income (loss) $18.4
 $(30.3) $(2.6) $(58.3) $(72.8)
(1) BAM manages its affairs on a statutory accounting basis. BAM’s statutory surplus includes surplus notes and $30.5 from MediaAlpha foris not reduced by accruals of interest expense on the three months ended March 31, 2016.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.

Note 14. Investments12. Investment in Unconsolidated AffiliatesSymetra
 
White Mountains’s investmentsinvestment in unconsolidated affiliates represent investments in other companiesSymetra represented an investment in which White Mountains hashad a significant voting and economic interest but doesdid 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.


Note 15.13. 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. As of September 30, 2017, White Mountains’s share-based compensation incentive awards consist of performance shares and restricted shares and stock options.shares.

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.approved for payment.  The following table summarizes performance share activity for the three and nine months ended March 31,September 30, 2017 and 2016 for performance shares granted under the WTM Incentive Plan:
 Three Months Ended March 31, Three Months Ended September 30, Nine Months Ended September 30,
 2017 2016 2017 2016 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 80,353
 $42.4
 93,654
 $57.7
 50,575
 $31.2
 73,297
 $32.5
 80,353
 $42.4
 93,654
 $57.7
Shares paid or expired(1)
 (30,167) (20.8) —
 —
Shares paid (1)
 —
 —
 —
 —
 (30,838) (21.6) (36,294) (41.0)
New grants 16,460
 —
 16,215
 —
 —
 —
 6,400
 —
 17,510
 —
 22,615
 —
Forfeitures and cancellations(2)
 (9,841) (5.7) (1,186) (.6) (256) (.4) (160) (.1) (16,706) (9.4) (438) .2
Expense recognized —
 8.1
 —
 14.2
 —
 7.0
 —
 5.0
 —
 26.4
 —
 20.5
End of period(3)
 56,805
 $24.0
 108,683
 $71.3
 50,319
 $37.8
 79,537
 $37.4
 50,319
 $37.8
 79,537
 $37.4
(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. 
(2) Amounts include changes in assumed forfeitures, as required under GAAP.
(3) Outstanding performance share awards as of March 31,September 30, 2017 and 2016 exclude 2,195 and 10,8267,315 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. If all the outstanding WTM performance shares had vested on March 31,September 30, 2017, the total additional compensation cost to be recognized would have been $30.528.7 million, based on accrual factors at March 31, 2017(common share price and payout assumptions) at September 30, 2017.
 
Performance Shares granted underGranted 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 March 31,September 30, 2017 for each performance cycle:
Millions, except share amounts 
Target Performance
Shares Outstanding
 
Accrued
Expense
 
Target Performance
Shares Outstanding
 
Accrued
Expense
Performance cycle:  
  
  
  
2015 – 2017 18,370
 $20.6
2016 – 2018 16,235
 12.1
2017 – 2019 16,460
 $1.2
 16,480
 5.7
2016 – 2018 19,415
 7.3
2015 – 2017 21,795
 15.8
Sub-total 57,670
 24.3
 51,085
 38.4
Assumed forfeitures (865) (.3) (766) (.6)
March 31, 2017 56,805
 $24.0
September 30, 2017 50,319
 $37.8


Restricted Shares Granted Under the WTM Incentive Plan
The following table summarizes the unrecognized compensation cost associated with the outstanding restricted share awards for the three and nine months ended March 31,September 30, 2017 and 2016:
 Three Months Ended March 31, Three Months Ended September 30, Nine Months Ended September 30,
 2017 2016 2017 2016 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 70,620
 $19.7
 70,675
 $15.7
 53,815
 $23.5
 66,470
 $24.2
 70,620
 $19.7
 70,675
 $15.7
Issued 16,735
 15.8
 21,215
 16.8
 —
 —
 4,150
 3.4
 17,785
 16.7
 25,365
 19.7
Vested (22,015) —
 (24,620) —
 (260) —
 —
 —
 (28,846) —
 (24,620) —
Forfeited (5,200) (2.8) (800) (.3) —
 —
 —
 —
 (6,004) (3.5) (800) .2
Expense recognized —
 (3.6) —
 (3.0) —
 (3.8) —
 (3.8) —
 (13.2) —
 (11.8)
End of period (1)
 60,140
 $29.1
 66,470
 $29.2
 53,555
 $19.7
 70,620
 $23.8
 53,555
 $19.7
 70,620
 $23.8
(1) Restricted share awards outstanding as of March 31,September 30, 2017 and 2016 include 5,2352,195 and 2,1955,235 restricted shares issued to employees of Sirius Group, which was accounted for as discontinued operations.

During the three months ended March 31,second quarter of 2017, White Mountains issued 550 restricted shares that vest on January 1, 2020, 250 restricted shares that vest on January 1, 2019 and 250 restricted shares that vest on January 1, 2018. During the first quarter of 2017, White Mountains issued 16,735 restricted shares that vest on January 1, 2020. During the first threenine months of 2016, White Mountains issued 21,21524,615 restricted shares that vest on January 1, 2019.2019 and 750 restricted shares that vest on January 1, 2018. The unrecognized compensation costunamortized issue date fair value at March 31,September 30, 2017 is expected to be recognized ratably over the remaining vesting periods. 
Stock Options
Non-Qualified Options
As March 31,January 20, 2017, the 125,000 Non-Qualified options issued to the Company’s former Chairman and CEO havehad been exercised. During the first quarter of 2017, 40,000 Non-Qualified Options, with 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 $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 lessand the fixed strike price of $742 per common share. The Non-Qualified Options were fully amortized as of 2011.

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 months endedMarch 31, 2017 and 2016 for OneBeacon performance shares granted under the OneBeacon Incentive Plan:
  Three Months Ended March 31,
  2017 2016
Millions, except share amounts  Target Performance
Shares Outstanding		 
Accrued
Expense
 Target Performance
Shares Outstanding		 
Accrued
Expense
Beginning of period 452,519
 $1.6
 449,435
 $1.4
Shares paid or expired(1)
 (142,710) —
 (167,300) (.7)
New grants —
 —
 163,150
 —
Assumed forfeitures and cancellations(2)
 (13) —
 (4,079) —
Expense recognized —
 .3
 —
 .4
End of period 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.
(2) Amounts include changes in assumed forfeitures, as required under GAAP.

If the outstanding OneBeacon performance shares had been vested on March 31, 2017, the total additional compensation cost to be recognized would have been $1.8 million, based on accrual factors at March 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 March 31, 2017 for each performance cycle:
Millions, except share amounts Target Performance
Shares Outstanding		 Accrued Expense
Performance cycle:  
  
2016 – 2018 163,150
 $1.1
2015 – 2017 146,646
 .8
Sub-total 309,796
 1.9
Assumed forfeitures —
 —
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 months endedMarch 31, 2017 and 2016:
  Three Months Ended March 31,
  2017 2016
Millions, except share amounts Restricted
Shares		 Unamortized
Issue Date Fair Value		 Restricted
Shares		 Unamortized
Issue Date Fair Value
Non-vested,  
  
  
  
Beginning of period 395,872
 $2.1
 382,722
 $2.5
Issued 461,160
 7.4
 170,650
 2.3
Vested (157,500) —
 (157,500) —
Forfeited —
 —
 —
 —
Expense recognized —
 (.9) —
 (.5)
End of period 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 shares, of which 92,500 restricted shares vest on February 24, 2018 and 78,150 vest on January 1, 2019.
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 March 31, 2017, unrecognized compensation expense of $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 three 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 222,449 RSUs that are scheduled to vest on December 31, 2018, of which, net of forfeiture assumptions, 208,499 were outstanding as of March 31, 2017.
At vesting the RSUs will be paid out in cash or shares at the discretion of the OneBeacon Compensation Committee. For the three months ended March 31, 2017 and 2016, the expense associated with the RSUs was $0.6 million and $0.4 million. If all of the outstanding 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 accumulated dividends) as of March 31, 2017.


Note 16.14. Fair Value of Financial Instruments
 
White Mountains accounts for its financial instruments at fair value with the exception of the OBH Senior NotesWTM Bank Facility, which was undrawn at September 30, 2017 and December 31, 2016, the MediaAlpha Bank Facility and the Previous MediaAlpha Bank Facility, which areis 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 March 31,September 30, 2017 and December 31, 2016:
 March 31, 2017 December 31, 2016 September 30, 2017 December 31, 2016
Millions 
Fair
Value
 
Carrying
Value
 
Fair
Value
 
Carrying
Value
 
Fair
Value
 
Carrying
Value
 
Fair
Value
 
Carrying
Value
OBH Senior Notes $279.4
 $273.2
 $274.2
 $273.2
MediaAlpha Bank Facility 11.7
 11.5
 13.0
 12.7
 $9.4
 $9.4
 $—
 $—
Previous MediaAlpha Bank Facility —
 —
 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 forMediaAlpha Bank Facility and the Previous MediaAlpha Bank Facility has been determined based on a discounted cash flows approach and is considered to be a Level 3 measurement.


Note 17.15. Held for Sale and Discontinued Operations

OneBeacon
On September 28, 2017, Intact Financial Corporation completed its previously announced acquisition of OneBeacon in an all-cash transaction for $18.10 per share. White Mountains received total proceeds of $1.3 billion and recorded a gain of $554.6 million, net of transaction costs. Net income (loss) from discontinued operations related to OneBeacon was $20.5 million and $(15.2) million though the closing date of the nine and three months ended and September 30, 2017. Net income from discontinued operations related to OneBeacon was $93.8 million and $22.5 million for the nine and three months ended September 30, 2016.

Star & Shield
On March 7, 2017, White Mountains completed the 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.

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 at closing. On October 5, 2016, White Mountains received additional proceeds of $1.2 million following the release of the post-closing purchase price adjustment escrow. During 2016, 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.
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. Net loss from discontinued operations related to
Tranzact, prior to the tax benefit described below, was $2.1 million and $2.6 million for the three and nine months ended September 30, 2016.
During the third quarter of 2016, White Mountains recognized a $14.0 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; $30.2 million of tax expense was recorded to gain from sale of Tranzact in discontinued operations and a $16.1 million tax benefit was recorded to net income from discontinued operations.
In the nine months ended September 30, 2017, White Mountains recorded a $1.0 million reduction to the gain from sale of Tranzact in discontinued operations as a result of 2016 state tax payments.

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. During 2016, White Mountains recorded $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.
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 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 three months and six ended March 31,June 30, 2016, $4.1$0.4 million and $3.7 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 loss from discontinued operations. For the three months ended March 31, 2016, White Mountains recorded $0.9$(4.0) million and $356.2 million of net losstotal income from discontinued operations for the three and $37.2nine months ended September 30, 2016 and $145.3 million of other comprehensive income from Sirius Group.

Tranzact
On June 9, 2016, White Mountains announced that it had entered into an 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 at closing. On October 5, 2016, White Mountains received additional proceeds of $1.2 million following the release of the post-closing purchase price adjustment escrow. See Note 2 — “Significant Transactions”.nine months ended September 30, 2016.
During 2016, 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. In the firstthird quarter of 2017, White Mountains recorded a $1.0$0.8 million reduction to the gain from sale of Tranzact in discontinued operationsSirius Group as a result of 2016 tax payments.
During 2016, White Mountains recognized a $21.4 million tax benefit in continuing operations relatedchange to the reversalvaluation 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, $30.2 million of tax expense was recordedaccrued incentive compensation payable to gain from sale of Tranzact in discontinued operations and a $8.8 million tax benefit was recorded to net income from discontinued operations.Sirius Group employees.
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. 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 a corresponding increase to net income attributable to non-controlling interests. On January 13, 2017, White Mountains reached an agreement to sell Star & Shield and its investment in SSIE Surplus Notes to K2 Insurance Services, LLC and the sale was completed on March 7, 2017. 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.

Summary of Reclassified Balances and Related Items

Net Assets Held for Sale
The following table summarizes the assets and liabilities associated with businessbusinesses classified as held for sale. At December 31, 2016, amountsAmounts presented relate to OneBeacon, Star & Shield and SSIE.
Millions December 31, 2016 December 31, 2016
Assets held for sale    
Fixed maturity investments, at fair value $6.6
 $2,175.7
Short-term investments, at amortized cost (which approximates fair value) .2
 112.3
Common equity securities, at fair value 188.7
Other long-term investments 150.5
Total investments 6.8
 2,627.2
Cash .9
 70.5
Reinsurance recoverable on unpaid losses .3
Reinsurance recoverable on unpaid and paid losses 179.8
Insurance and reinsurance premiums receivable 1.5
 229.8
Deferred acquisition costs 96.3
Deferred tax asset 126.7
Ceded unearned insurance and reinsurance premiums 44.2
Accounts receivable on unsettled investment sales 1.4
Goodwill and other intangible assets 1.2
Accrued investment income 11.3
Other assets .6
 211.1
Total assets held for sale $10.1
 $3,599.5
Liabilities held for sale 
 
Loss and loss adjustment expense reserves $5.0
 $1,370.6
Unearned insurance and reinsurance premiums 1.2
 576.3
Debt 273.2
Accrued incentive compensation 44.3
Funds held under reinsurance treaties 153.0
Other liabilities (1.1) 151.9
Total liabilities held for sale 5.1
 2,569.3
Net assets held for sale $5.0
 $1,030.2

Net Income (Loss) from Discontinued Operations 
The following table summarizes the results of operations, including related income taxes, associated with the business classified as discontinued operations. For the three and nine months ended March 31,September 30, 2017, the amounts presented relate to OneBeacon and Sirius Group. For the three and nine months ended September 30, 2016, the amounts presented relate to OneBeacon, Sirius Group and Tranzact. The results of discontinued operations from Sirius Group and Tranzact up to the closing date of the transaction inureinured to White Mountains. Given the fixed price nature of the OneBeacon Transaction, OneBeacon’s results were economically transferred to the buyer at signing.
 Three Months Ended Three Months Ended Three Months Ended Three Months Ended
 March 31, 2017 March 31, 2016 September 30, 2017 September 30, 2016
Millions Sirius Group Other Disc Ops Total Sirius Group Other Disc Ops Total OneBeacon Sirius Group Total OneBeacon Sirius Group Tranzact Total
Revenues                          
Earned insurance premiums $—
 $—
 $—
 $202.4
 $—
 $202.4
 $268.4
 $—
 $268.4
 $277.9
 $—
 $—
 $277.9
Net investment income —
 —
 —
 12.2
 —
 12.2
 13.0
 —
 13.0
 11.8
 —
 —
 11.8
Net realized and unrealized losses —
 —
 —
 (8.8) —
 (8.8)
Net realized and unrealized gains 11.5
 —
 11.5
 15.5
 —
 —
 15.5
Other revenue —
 —
 —
 (4.1) 57.8
 53.7
 2.2
 —
 2.2
 1.8
 —
 14.8
 16.6
Total revenues —
 —
 —
 201.7
 57.8
 259.5
 295.1
 —
 295.1
 307.0
 —
 14.8
 321.8
Expenses                          
Loss and loss adjustment expenses —
 —
 —
 113.7
 —
 113.7
 206.8
 —
 206.8
 162.8
 —
 —
 162.8
Insurance and reinsurance acquisition expenses —
 —
 —
 48.4
 —
 48.4
 51.9
 —
 51.9
 55.1
 —
 —
 55.1
Other underwriting expenses —
 —
 —
 26.7
 —
 26.7
 44.9
 —
 44.9
 49.4
 —
 —
 49.4
General and administrative expenses —
 —
 —
 8.1
 53.4
 61.5
 7.4
 —
 7.4
 3.5
 —
 16.2
 19.7
Interest expense —
 —
 —
 6.6
 1.4
 8.0
 3.4
 —
 3.4
 3.3
 —
 .5
 3.8
Total expenses —
 —
 —
 203.5
 54.8
 258.3
 314.4
 —
 314.4
 274.1
 —
 16.7
 290.8
Pre-tax (loss) income —
 —
 —
 (1.8) 3.0
 1.2
 (19.3) —
 (19.3) 32.9
 —
 (1.9) 31.0
Income tax expense (benefit) —
 —
 —
 .9
 (1.0) (.1)
Income tax benefit (expense) 4.1
 —
 4.1
 (10.4) —
 15.9
 5.5
Net (loss) income from discontinued operations —
 —
 —
 (.9) 2.0
 1.1
 (15.2) —
 (15.2) 22.5
 —
 14.0
 36.5
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
Net gain (loss) from sale of discontinued
operations
 554.5
 (.2) 554.3
 —
 (4.0) 51.9
 47.9
Total income (loss) from discontinued
operations
 539.3
 (.2) 539.1
 22.5
 (4.0) 65.9
 84.4
Change in foreign currency translation and other
from discontinued operations
 —
 —
 —
 37.2
 —
 37.2
 .1
 —
 .1
 (.3) —
 —
 (.3)
Comprehensive (loss) income from discontinued operations $—
 $(1.0) $(1.0) $36.3
 $2.0
 $38.3
Recognition of benefit plan assets and obligations
from the sale of OneBeacon, net of tax		 2.9
 —
 2.9
 —
 —
 —
 —
Comprehensive income (loss)
from discontinued operations
 $542.3
 $(.2) $542.1
 $22.2
 $(4.0) $65.9
 $84.1


  Nine Months Ended Nine Months Ended
  September 30, 2017 September 30, 2016
Millions OneBeacon Sirius Group Tranzact Total OneBeacon Sirius Group Tranzact Total
Revenues                
Earned insurance premiums $807.6
 $—
 $—
 $807.6
 $827.9
 $240.1
 $—
 $1,068.0
Net investment income 39.7
 —
 —
 39.7
 38.3
 14.4
 —
 52.7
Net realized and unrealized gains
   (losses)
 38.8
 —
 —
 38.8
 56.8
 (1.5) —
 55.3
Other revenue 7.7
 —
 —
 7.7
 3.5
 .6
 119.6
 123.7
Total revenues 893.8
 —
 —
 893.8
 926.5
 253.6
 119.6
 1,299.7
Expenses                
Loss and loss adjustment expenses 546.0
 —
 —
 546.0
 501.3
 154.9
 —
 656.2
Insurance and reinsurance
   acquisition expenses
 145.6
 —
 —
 145.6
 154.8
 59.0
 —
 213.8
Other underwriting expenses 156.2
 —
 —
 156.2
 155.6
 30.9
 —
 186.5
General and administrative expenses 21.2
 —
 —
 21.2
 10.9
 10.4
 116.7
 138.0
Interest expense 10.0
 —
 —
 10.0
 9.8
 7.9
 3.2
 20.9
Total expenses 879.0
 —
 —
 879.0
 832.4
 263.1
 119.9
 1,215.4
Pre-tax income (loss) 14.8
 —
 —
 14.8
 94.1
 (9.5) (.3) 84.3
Income tax benefit (expense) 5.7
 —
 —
 5.7
 (.3) 3.1
 13.8
 16.6
Net income (loss) from
   discontinued operations
 20.5
 —
 —
 20.5
 93.8
 (6.4) 13.5
 100.9
Net gain (loss) from sale of
   discontinued operations
 554.5
 (.8) (1.0) 552.7
 —
 362.6
 51.9
 414.5
Total income (loss) from discontinued
   operations
 575.0
 (.8) (1.0) 573.2
 93.8
 356.2
 65.4
 515.4
Change in foreign currency translation
   and other from discontinued
   operations
 .3
 —
 —
 .3
 .5
 32.0
 —
 32.5
Recognition of foreign currency
   translation and other from sale of
   Sirius Group, net of tax
 —
 —
 —
 —
 —
 113.3
   113.3
Recognition of benefit plan assets
   and obligations from the sale of
   OneBeacon, net of tax
 2.9
 —
 —
 2.9
 —
 —
 —
 —
Comprehensive income (loss)
   from discontinued operations
 $578.2
 $(.8) $(1.0) $576.4
 $94.3
 $501.5
 $65.4
 $661.2

Net Change in Cash from Discontinued Operations
The following summarizes the net change in cash, including income tax (payment to) refund frompayment to national governments and interest paid associated with the business classified as discontinued operations:
 Three Months Ended Nine Months Ended
 March 31, September 30,
(Millions) 2017 2016
Net cash (used for) provided from operations $—
 $(40.7)
Millions 2017 2016
Net cash provided from operations $157.0
 $38.1
Net cash provided from investing activities —
 33.6
 3.0
 269.7
Net cash (used for) provided from financing activities —
 (8.3)
Effect of exchange rate changes on cash —
 4.2
Net cash used for financing activities (61.9) (72.7)
Net change in cash during the period —
 (11.2) 98.1
 235.1
Cash balances at beginning of period .9
 150.2
 70.5
 245.4
Net change in cash held for sale (.9) .9
Net change in cash held for sale, excluding discontinued operations (.9) 2.6
Cash sold as part of sale of consolidated subsidiaries 167.7
 345.8
Cash balances at end of period $—
 $139.9
 $—
 $137.3
Supplemental cash flows information:        
Interest paid $—
 $(1.4) $—
 $(7.7)
Net income tax payment to national governments $—
 $(36.4) $—
 $(18.3)

Earnings Per Share from Discontinued Operations
White Mountains calculates earnings per share using the two-class method, which allocates earnings between common and unvested restricted common shares. Both classes of shares participate equally in earnings on a per share basis. Basic earnings per share amounts are based on the weighted average number of common shares outstanding includingadjusted for unvested restricted shares that are considered participating securities.common shares. Diluted earnings per share amounts are based on the weighted average number of common shares including unvested restricted shares and thealso impacted by net effect of potentially dilutive common shares outstanding. The following table outlines the Company’s computation of earnings per share for discontinued operations for the three and nine months ended March 31,September 30, 2017 and 2016:
 Three Months Ended Three Months Ended Nine Months Ended
 March 31, September 30, September 30,
 2017 2016 2017 2016 2017 2016
Basic and diluted earnings per share numerators (in millions):            
Net income attributable to White Mountains’s common shareholders $(1.0) $1.1
 $562.1
 $90.8
 $604.7
 $440.7
Allocation of income for participating unvested restricted common shares(1)
 —
 —
Net income attributable to White Mountains’s common shareholders,
net of restricted common share amounts (2)
 $(1.0) $1.1
Less: total income from continuing operations, net of tax (23.0) (6.4) (31.5) 74.7
Net income (loss) from discontinued operations attributable to
White Mountains’s common shareholders
 $539.1
 $84.4
 $573.2
 $515.4
Allocation of earnings to participating restricted common shares (1)
 (6.7) (1.2) (7.0) (6.3)
Basic and diluted earnings per share numerators $532.4
 $83.2
 $566.2
 $509.1
Basic earnings per share denominators (in thousands):            
Total average common shares outstanding during the period 4,564.6
 5,539.6
 4,297.2
 4,867.4
 4,477.0
 5,166.6
Average unvested restricted common shares(3)
 (52.5) (54.0) (53.7) (68.1) (54.5) (62.9)
Basic earnings per share denominator 4,512.1
 5,485.6
 4,243.5
 4,799.3
 4,422.5
 5,103.7
Diluted earnings per share denominator (in thousands):            
Total average common shares outstanding during the period(4)
 4,564.6
 5,540.5
 4,297.2
 4,879.4
 4,477.0
 5,174.8
Average unvested restricted common shares(3)
 (52.5) (54.0) (53.7) (68.1) (54.5) (62.9)
Diluted earnings per share denominator(4)
 4,512.1
 5,486.5
 4,243.5
 4,811.3
 4,422.5
 5,111.9
Basic earnings per share (in dollars): $(.22) $.20
Diluted earnings per share (in dollars): $(.22) $.20
Basic earnings per share (in dollars) - discontinued operations: $125.45
 $17.34
 $128.03
 $99.75
Diluted earnings per share (in dollars) - discontinued operations: $125.45
 $17.30
 $128.03
 $99.60
(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 March 31,September 30, 2017 and 2016.
(3) Restricted common shares outstanding vest either in equal annual installments or upon a stated date. See Note 15 -13 — “Employee Share-Based Compensation Plans”.
(4) The diluted earnings per share denominator for the three and nine months ended March 31,September 30, 2016 includes the impact of 125,000120,000 common shares issuable upon exercise of the non-qualified options outstanding, which resultsresulted in 88211,943 and 8,208 incremental shares outstanding over the period.

Fair Value of Financial Instruments in Liabilities Held for Sale
The incremental sharesOBH Senior Notes are recorded as debt at face value less unamortized original issue discount. The following table summarizes the fair value and carrying value of this financial instrument as of December 31, 2016:
  December 31, 2016
Millions 
Fair
Value
 
Carrying
Value
OBH Senior Notes $274.2
 $273.2

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.


OneBeacon Surplus Notes in Assets Held for Sale
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 Runoff Transaction”), OneBeacon provided financing in the form of surplus notes (the “OneBeacon Surplus Notes”) with a par value of $101.0 million which had an effecta fair value of $71.9 million as of December 31, 2016. The OneBeacon Surplus Notes, issued by one of the transferred entities, Bedivere Insurance Company (the “Issuer”) were in the form of both seller priority and pari passu notes.
Subsequent to closing, the OneBeacon 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 diluted earning per sharediscounted expected cash flows using information as of less than $0.01 per share.the measurement date.
Below is a table illustrating the valuation adjustments taken to arrive at estimated fair value of the OneBeacon Surplus Notes as of December 31, 2016:
Millions Total as of December 31, 2016
Par Value $101.0
Fair value adjustments to reflect:  
Current market rates on public debt and contract-based repayments (1)
 5.1
Regulatory approval (2)
 (15.6)
Liquidity adjustment (3)
 (18.6)
Total adjustments (29.1)
Fair value $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 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 delay in securing regulatory approvals of interest and principal payments to reflect graduated changes in Issuer's statutory surplus. The monetary impact of the anticipated delay is measured based on credit spreads of public 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's sole ownership of the notes, lack of a trading market, and unique nature of the ongoing regulatory approval process.

Note 18.16. Financial Statement Revisions

In October 2017, White Mountains discovered that the former CEO of Wobi, one of its overseas portfolio companies, had been reporting overstated commission revenues and related receivables to White Mountains. As a result, White Mountains has revised certain of its previously issued financial statements. The revisions resulted in reductions to commission revenues (included in advertising and commission revenues) and commissions receivable (included in other assets). In addition, the overstatements led White Mountains to write down the goodwill and other intangible assets related to Wobi to zero. This write down is recorded in general and administrative expenses in the years ended December 31, 2016 and 2015.
White Mountains evaluated the impact of the misstatements resulting from the overstatements at Wobi on prior periods’ financial statements in accordance with SEC Staff Accounting Bulletin (“SAB”) Topic 1.M, Materiality, and concluded the misstatements were not material to any previously reported financial statements. However, while not material to any previously reported annual or quarterly period, the aggregate amount of prior period misstatements could be material to White Mountains's results for the full fiscal year ended December 31, 2017. White Mountains has therefore revised all periods impacted including its consolidated balance sheet as of June 30, 2017 and December 31, 2016 and 2015; and its consolidated statements of operations and comprehensive income, consolidated statements of changes in equity, cash flows and earnings per share for the years ended December 31, 2016, 2015 and 2014, the six month period ended June 30, 2017, and the three and nine month periods ended September 30, 2016. The revisions also reflect a previously recorded out of period adjustment in 2015 and 2014. The impact of these revisions to each of the previously reported consolidated statements are disclosed below. Amounts previously reported reflect the reclassification of OneBeacon, Sirius Group and Tranzact to discontinued operations for all applicable periods presented.


CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (Unaudited)

  Three months ended Nine months ended
  September 30, 2016
Millions, except for per share amounts As previously reported Adjustments As revised As previously reported Adjustments As revised
Revenues:            
Earned insurance premiums $3.4
 $—
 3.4
 $10.2
 $—
 $10.2
Net investment income 9.6
 —
 9.6
 18.2
 —
 18.2
Net realized and unrealized investment gains 10.9
 —
 10.9
 27.2
 —
 27.2
Advertising and commission revenues 29.4
 (1.2) 28.2
 92.4
 (2.8) 89.6
Other revenue 4.7
 —
 4.7
 18.0
 —
 18.0
Total revenues 58.0
 (1.2) 56.8
 166.0
 (2.8) 163.2
Expenses:            
Loss and loss adjustment expenses 2.2
 —
 2.2
 6.8
 —
 6.8
Insurance and acquisition expenses 1.3
 —
 1.3
 4.4
 —
 4.4
Other underwriting expenses .2
 —
 .2
 .4
 —
 .4
Cost of sales 24.0
 —
 24.0
 76.9
 —
 76.9
General and administrative expenses 42.7
 (.3) 42.4
 142.6
 2.3
 144.9
Interest expense on debt .5
 —
 .5
 2.6
 —
 2.6
Total expenses 70.9
 (.3) 70.6
 233.7
 2.3
 236.0
Pre-tax loss (12.9) (.9) (13.8) (67.7) (5.1) (72.8)
Income tax benefit 17.1
 —
 17.1
 22.7
 —
 22.7
Net income (loss) from continuing operations 4.2
 (.9) 3.3
 (45.0) (5.1) (50.1)
Gain on sale of discontinued operations 47.9
 —
 47.9
 414.5
 —
 414.5
Net income from discontinued operations 36.5
 —
 36.5
 100.9
 —
 100.9
Net income (loss) (1)
 88.6
 (.9) 87.7
 470.4
 (5.1) 465.3
Net loss (income) attributable to
   non-controlling interests
 3.1
 —
 3.1
 (24.6) —
 (24.6)
Net income (loss) attributable to
   White Mountains's common shareholders
 91.7
 (.9) 90.8
 445.8
 (5.1) 440.7
Other comprehensive income (loss), net of tax .2
 (.2) —
 145.6
 (.2) 145.4
Comprehensive income (loss) 91.9
 (1.1) 90.8
 591.4
 (5.3) 586.1
Comprehensive loss attributable to
   non-controlling interests
 .1
 —
 .1
 .1
 —
 .1
Comprehensive income (loss) attributable to
   White Mountains's common shareholders
 $92.0
 $(1.1) $90.9
 $591.5
 $(5.3) $586.2
             
Basic and diluted earnings per share -
   continuing operations
 $1.50
 $(.18) $1.32
 $(13.49) $(1.00) $(14.49)
(1) The adjustment to net income resulted in a corresponding adjustment in the statement of cash flows, with an offsetting adjustment to the change in other assets and liabilities within the operating cash flows section. There was no change to cash flows from operations, cash flows from investing activities or cash flows from financing activities.


CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (Unaudited)

  Six months ended June 30, 2017
Millions, except for per share amounts As previously reported Adjustments As revised
Revenues:      
Earned insurance premiums $5.2
 $—
 $5.2
Net investment income 27.5
 —
 27.5
Net realized and unrealized investment gains 70.0
 —
 70.0
Advertising and commission revenues 71.7
 (6.6) 65.1
Other revenue 4.5
 —
 4.5
Total revenues 178.9
 (6.6) 172.3
Expenses:      
Loss and loss adjustment expenses 1.1
 —
 1.1
Insurance and acquisition expenses 2.2
 —
 2.2
Other underwriting expenses .2
 —
 .2
Cost of sales 55.6
 —
 55.6
General and administrative expenses 117.9
 .1
 118.0
Interest expense on debt .9
 —
 .9
Total expenses 177.9
 .1
 178.0
Pre-tax income (loss) 1.0
 (6.7) (5.7)
Income tax benefit 1.3
 —
 1.3
Net income (loss) from continuing operations 2.3
 (6.7) (4.4)
Loss on sale of discontinued operations (1.6) —
 (1.6)
Net income from discontinued operations 35.7
 —
 35.7
Net income (loss) 36.4
 (6.7) 29.7
Net loss (income) attributable to non-controlling interests 13.4
 (.4) 13.0
Net income (loss) attributable to White Mountains's common shareholders 49.8
 (7.1) 42.7
Other comprehensive income (loss), net of tax 1.7
 (1.3) .4
Comprehensive income (loss) 51.5
 (8.4) 43.1
Comprehensive income attributable to non-controlling interests (.1) —
 (.1)
Comprehensive income (loss) attributable to White Mountains's
   common shareholders
 $51.4
 $(8.4) $43.0
       
Basic and diluted earnings per share - continuing operations $3.42
 $(1.59) $1.83



CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME
  As previously reported Adjustments As revised
   Years ended December 31,
Millions, except for per share amounts 2016 2015 2014 2016 2015 2014 2016 2015 2014
Revenues:                  
Earned insurance premiums $13.4
 $12.0
 $7.9
 $—
 $—
 $—
 $13.4
 $12.0
 $7.9
Net investment income 32.1
 10.9
 12.2
 —
 —
 —
 32.1
 10.9
 12.2
Net realized and unrealized
   investment gains
 (27.4) 260.5
 38.1
 —
 —
 —
 (27.4) 260.5
 38.1
Advertising and commission
   revenues
 126.9
 110.1
 65.7
 (8.6) (2.7) (.2) 118.3
 107.4
 65.5
Other revenue (1)
 21.3
 41.8
 20.5
 —
 7.4
 (6.9) 21.3
 49.2
 13.6
Total revenues 166.3
 435.3
 144.4
 (8.6) 4.7
 (7.1) 157.7
 440.0
 137.3
Expenses:                  
Loss and loss adjustment expenses 8.0
 8.2
 8.9
 —
 —
 —
 8.0
 8.2
 8.9
Insurance and acquisition
   expenses
 5.6
 6.3
 2.9
 —
 —
 —
 5.6
 6.3
 2.9
Other underwriting expenses .5
 .4
 .4
 —
 —
 —
 .5
 .4
 .4
Cost of sales 102.0
 93.6
 57.8
 —
 —
 —
 102.0
 93.6
 57.8
General and administrative
   expenses
 183.7
 193.2
 144.9
 2.2
 7.5
 —
 185.9
 200.7
 144.9
Interest expense on debt 3.0
 1.6
 1.2
 —
 —
 —
 3.0
 1.6
 1.2
Total expenses 302.8
 303.3
 216.1
 2.2
 7.5
 —
 305.0
 310.8
 216.1
Pre-tax income (136.5) 132.0
 (71.7) (10.8) (2.8) (7.1) (147.3) 129.2
 (78.8)
Income benefit (expense) 32.9
 (12.7) 2.5
 —
 —
 —
 32.9
 (12.7) 2.5
Net income from
   continuing operations
 (103.6) 119.3
 (69.2) (10.8) (2.8) (7.1) (114.4) 116.5
 (76.3)
Gain on sale of discontinued operations 415.1
 17.9
 17.2
 —
 —
 —
 415.1
 17.9
 17.2
Net income from discontinued operations 108.3
 117.2
 296.4
 —
 —
 —
 108.3
 117.2
 296.4
Income (loss) before equity
   in earnings of
   unconsolidated affiliates
 419.8
 254.4
 244.4
 (10.8) (2.8) (7.1) 409.0
 251.6
 237.3
Equity in earnings of
   unconsolidated affiliates
 —
 25.1
 45.6
 
 —
 —
 —
 25.1
 45.6
Net income (loss)(2)
 419.8
 279.5
 290.0
 (10.8) (2.8) (7.1) 409.0
 276.7
 282.9
Net (income) loss attributable to
   non-controlling interests
 (7.3) 18.1
 22.2
 .1
 .4
 .1
 (7.2) 18.5
 22.3
Net income (loss) attributable to
   White Mountains's
   common shareholders
 412.5
 297.6
 312.2
 (10.7) (2.4) (7.0) 401.8
 295.2
 305.2
Other comprehensive income,
   net of tax (1)
 145.6
 (100.4) (104.9) —
 (7.4) 6.9
 145.6
 (107.8) (98.0)
Comprehensive income (loss) 558.1
 197.2
 207.3
 (10.7) (9.8) (.1) 547.4
 187.4
 207.2
Comprehensive (income) loss
   attributable to
   non-controlling interests
 (.3) —
 3.3
 —
 —
 —
 (.3) —
 3.3
Comprehensive income (loss)
  attributable to White
  Mountains's common shareholders
 $557.8
 $197.2
 $210.6
 $(10.7) $(9.8) $(.1) $547.1
 $187.4
 $210.5
                   
Basic and diluted earnings per
   share - continuing operations
 $(22.13) $27.63
 $(.24) $(2.15) $(.42) $(1.16) $(24.28) $27.21
 $(1.40)
(1) In 2015 and 2014, White Mountains recorded a foreign currency translation gain related to its investment in Symetra in net income when it should have been recorded through other comprehensive income. The correction to properly reflect the translation amount through other comprehensive income did not have any impact on comprehensive income attributable to White Mountains's common shareholders or to book value per share.
(2) The adjustment to net income resulted in a corresponding adjustment in the statement of cash flows, with an offsetting adjustment to the change in other assets and liabilities within the operating cash flows section. There was no change to cash flows from operations, cash flows from investing activities or cash flows from financing activities.

CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY

  As previously reported Adjustments As revised
   Years ended December 31,
Millions 2016 2015 2014 2016 2015 2014 2016 2015 2014
                   
Common shares and
   paid-in surplus
 $810.7
 $978.2
 $1,034.7
 $—
 $—
 $—
 $810.7
 $978.2
 $1,034.7
                   
Retained earnings,
  beginning of year
 3,084.9
 3,010.5
 2,801.9
 (9.9) (7.5) (.5) 3,075.0
 3,003.0
 2,801.4
Share repurchases (694.8) (217.2) (97.4) —
 —
 —
 (694.8) (217.2) (97.4)
Net income (loss) 412.5
 297.6
 312.2
 (10.7) (2.4) (7.0) 401.8
 295.2
 305.2
Dividends (5.4) (6.0) (6.2) —
 —
 —
 (5.4) (6.0) (6.2)
Retained earnings, end of year 2,797.2
 3,084.9
 3,010.5
 (20.6) (9.9) (7.5) 2,776.6
 3,075.0
 3,003.0
                   
Accumulated other
   comprehensive income,
   after tax, beginning of year
 (149.9) (49.5) 52.1
 —
 7.4
 .5
 (149.9) (42.1) 52.6
Net change in
   foreign currency translation
 31.4
 (65.8) (168.2) —
 (7.4) 6.9
 31.4
 (73.2) (161.3)
Net other changes in AOCI 113.9
 (34.6) 66.6
 —
 —
 —
 113.9
 (34.6) 66.6
Accumulated other
   comprehensive income,
   after tax, end of year
 (4.6) (149.9) (49.5) —
 —
 7.4
 (4.6) (149.9) (42.1)
                   
Total White Mountains
   Common Shareholders'
   Equity
 3,603.3
 3,913.2
 3,995.7
 (20.6) (9.9) (.1) 3,582.7
 3,903.3
 3,995.6
                   
Non-controlling interests,
   beginning of year
 454.8
 542.7
 491.7
 (.5) (.1) —
 454.3
 542.6
 491.7
Net income (loss) 7.3
 (18.1) (22.2) (.1) (.4) (.1) 7.2
 (18.5) (22.3)
Other changes in NCI (328.2) (69.8) 73.2
 —
 —
 —
 (328.2) (69.8) 73.2
Non-controlling interests,
   end of year
 133.9
 454.8
 542.7
 (.6) (.5) (.1) 133.3
 454.3
 542.6
                   
Total equity $3,737.2
 $4,368.0
 $4,538.4
 $(21.2) $(10.4) $(.2) $3,716.0
 $4,357.6
 $4,538.2



CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (Unaudited)

  Nine months ended September 30, 2016 Six months ended June 30, 2017
Millions As previously reported Adjustments As revised As previously reported Adjustments As revised
             
Common shares and paid-in surplus $809.8
 $—
 $809.8
 $815.1
 $.7
 $815.8
             
Retained earnings, beginning of year 3,084.9
 (9.9) 3,075.0
 2,797.2
 (20.6) 2,776.6
Share repurchases (678.6) —
 (678.6) (7.2) —
 (7.2)
Net income (loss) 445.8
 (5.1) 440.7
 49.8
 (7.1) 42.7
Dividends (5.4) —
 (5.4) (4.6) —
 (4.6)
Retained earnings, end of period 2,846.7
 (15.0) 2,831.7
 2,835.2
 (27.7) 2,807.5
             
Accumulated other comprehensive income,
   after tax, beginning of year
 (149.9) —
 (149.9) (4.6) —
 (4.6)
Net change in foreign currency translation 32.0
 (.2) 31.8
 1.6
 (1.3) .3
Net other changes in AOCI 113.6
 —
 113.6
 —
 —
 —
Accumulated other comprehensive
   income, after tax, end of year
 (4.3) (.2) (4.5) (3.0) (1.3) (4.3)
             
Total White Mountains Common
   Shareholders' Equity
 3,652.2
 (15.2) 3,637.0
 3,647.3
 (28.3) 3,619.0
             
Non-controlling interests,
   beginning of year
 454.8
 (.5) 454.3
 133.9
 (.6) 133.3
Net income (loss) 24.6
 —
 24.6
 (13.4) .4
 (13.0)
Other changes in NCI (330.2) —
 (330.2) (3.7) (.7) (4.4)
Non-controlling interests, end of period 149.2
 (.5) 148.7
 116.8
 (.9) 115.9
             
Total equity $3,801.4
 $(15.7) $3,785.7
 $3,764.1
 $(29.2) $3,734.9



CONSOLIDATED BALANCE SHEETS

  December 31, 2016 December 31, 2015
Millions As previously reported Adjustments As revised As previously reported Adjustments As revised
Assets            
Investments $2,714.4
 $—
 $2,714.4
 $1,679.7
 $—
 $1,679.7
Cash 80.2
 —
 80.2
 77.8
 —
 77.8
Insurance premiums receivable 1.6
 —
 1.6
 1.3
 —
 1.3
Deferred acquisition costs 10.6
 —
 10.6
 6.9
 —
 6.9
Deferred tax asset —
 —
 —
 —
 —
 —
Accrued investment income 14.8
 —
 14.8
 3.8
 —
 3.8
Accounts receivable on unsettled investment sales 4.8
 —
 4.8
 11.4
 —
 11.4
Goodwill 31.7
 (5.8) 25.9
 24.1
 (5.5) 18.6
Intangible assets 23.0
 (3.7) 19.3
 28.9
 (2.0) 26.9
Assets held for sale 3,599.5
 —
 3,599.5
 8,365.6
 —
 8,365.6
Other assets 64.1
 (15.0) 49.1
 83.1
 (3.9) 79.2
Total assets $6,544.7
 $(24.5) $6,520.2
 $10,282.6
 $(11.4) $10,271.2
Liabilities            
Unearned insurance premiums $82.9
 $—
 $82.9
 $50.2
 $—
 $50.2
Debt 12.7
 —
 12.7
 64.7
 —
 64.7
Deferred tax liability —
 —
 —
 27.4
 —
 27.4
Accrued incentive compensation 95.7
 —
 95.7
 96.2
 —
 96.2
Liabilities held for sale 2,569.3
 —
 2,569.3
 5,618.1
 —
 5,618.1
Other liabilities 46.9
 (3.3) 43.6
 58.0
 (1.0) 57.0
Total liabilities 2,807.5
 (3.3) 2,804.2
 5,914.6
 (1.0) 5,913.6
             
Equity            
White Mountains's common shares 4.6
 —
 4.6
 5.6
 —
 5.6
Paid in surplus 806.1
 —
 806.1
 972.6
 —
 972.6
Retained earnings 2,797.2
 (20.6) 2,776.6
 3,084.9
 (9.9) 3,075.0
Accumulated other comprehensive income,
   net of tax
 (4.6) —
 (4.6) (149.9) —
 (149.9)
Total White Mountains's
   common shareholders' equity
 3,603.3
 (20.6) 3,582.7
 3,913.2
 (9.9) 3,903.3
Non-controlling interests 133.9
 (.6) 133.3
 454.8
 (.5) 454.3
Total equity 3,737.2
 (21.2) 3,716.0
 4,368.0
 (10.4) 4,357.6
Total liabilities and equity $6,544.7
 $(24.5) $6,520.2
 $10,282.6
 $(11.4) $10,271.2


CONSOLIDATED BALANCE SHEET (Unaudited)

  June 30, 2017
Millions As previously reported Adjustments As revised
Assets      
Investments $2,692.9
 $—
 $2,692.9
Cash 53.3
 —
 53.3
Insurance and reinsurance premiums receivable 2.8
 —
 2.8
Deferred acquisition costs 13.0
 —
 13.0
Accrued investment income 16.0
 —
 16.0
Accounts receivable on unsettled investment sales 199.5
 —
 199.5
Goodwill 31.7
 (5.8) 25.9
Intangible assets 17.8
 (3.4) 14.4
Assets held for sale 3,696.4
 —
 3,696.4
Other assets 62.8
 (19.7) 43.1
Total assets $6,786.2
 $(28.9) $6,757.3
Liabilities      
Unearned insurance premiums $109.9
 $—
 $109.9
Debt 10.6
 —
 10.6
Accrued incentive compensation 63.3
 —
 63.3
Accounts payable for unsettled investment purchases 114.6
 —
 114.6
Liabilities held for sale 2,678.8
 —
 2,678.8
Other liabilities 44.9
 .3
 45.2
Total liabilities 3,022.1
 .3
 3,022.4
       
Equity      
White Mountains's common shares 4.6
 —
 4.6
Paid in surplus 810.5
 .7
 811.2
Retained earnings 2,835.2
 (27.7) 2,807.5
Accumulated other comprehensive income, net of tax (3.0) (1.3) (4.3)
Total White Mountains's common shareholders' equity 3,647.3
 (28.3) 3,619.0
Non-controlling interests 116.8
 (.9) 115.9
Total equity 3,764.1
 (29.2) 3,734.9
Total liabilities and equity $6,786.2
 $(28.9) $6,757.3

Note 17. Contingencies

Legal Contingencies
White Mountains and the insurance and reinsurance industry in general, are routinelyis 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. See Note 3 — “Loss and Loss Adjustment Expense Reserves”.
business. 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 White Mountains does not believehave any current litigation that the ultimate outcome of such claims and non-claims related litigation and arbitration willmay 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 March 31, 2017:

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'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 U.S. District Court for the Southern District of New 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 and OneBeacon-sponsored benefit plans received approximately $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 Plaintiffs’ appealed. On March 29, 2016, a three judge panel of the U.S Second Circuit Court of Appeals affirmed the dismissal of the 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 U. 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 SDNY and was stayed pending the motion to dismiss in the Noteholder Actions. An omnibus motion to dismiss the shareholder defendants in the Committee Action was filed in May 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 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 three months ended 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, and also ceased administratively paying benefits. As a result of these transactions, the Company recognized a pre-tax pension settlement charge of $0.3 million during the three months ended March 31, 2016, and no longer has a projected benefit obligation with respect to the Qualified Plan. 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”) with $13.8 million of excess invested assets remaining in the Qualified Plan trust as of March 31, 2017 in order to wind-down potential post-termination obligations of that plan, as approved by way of a March 2016 private letter ruling from the 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.
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 following discussion also includes twoinclude six non-GAAP financial measures (i) adjusted book value per share, and(ii) percentage change in adjusted book value per share for the third quarter of 2017, which includes the estimated gain from the OneBeacon Transaction as if it had closed on June 30, 2017, (iii) adjusted capital, (iv) return on common equity securities and other long-term investments including high-yield fixed maturity investments, (v) return on fixed maturity investments excluding high-yield fixed maturity investments and (vi) earnings before interest, taxes, depreciation and amortization ("EBITDA"), that have been reconciled tofrom their most comparable GAAP financial measures on page 64.76. 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 MARCH 31,SEPTEMBER 30, 2017 AND 2016

Overview
White Mountains ended the firstthird quarter of 2017 with book value per share of $925 and adjusted book value per share of $793 and $799.$906. Book value per share increased 17% and 18% for the third quarter and first nine months of 2017, including dividends, and adjusted book value per share were each up 1%increased 17% and 15% for the third quarter and first nine months of 2017, including dividends. Good investment returns and underwriting results were the primary drivers of the increase, and were partially offset by compensation expense recorded in the first quarter of 2017 related to the retirement of the Company’s former Chairman and CEO that impacted book value per share and adjusted book value per share by approximately half a point.
On May 2,September 28, 2017, OneBeacon announced it had entered into a definitive agreement to bewas acquired by Intact Financial Corporation in an all-cash transaction for $18.10 per share or roughly 1.65x tangible book value.  Based on White Mountains's ownership of 71.8 million OneBeacon common shares at March 31, 2017, the proceeds from the transaction would be $1.3 billion. White Mountains expects that the transaction will increase its book value by approximately $107 per share, which reflects compensation accruals, net of any applicable tax effects.(the “OneBeacon Transaction”). The transaction is expected to closeincreases in the fourth quarter of 2017. It is subject to regulatory approval and other customary closing conditions. See “Note 20 — Subsequent Events”.
OneBeacon’s book value per share increased 2.8%, including dividends,and adjusted book value per share were primarily driven by the gain from the OneBeacon Transaction, good investment returns, and share repurchases at a discount to book value per share and adjusted book value per share as of September 30, 2017.
During the second quarter of 2017, White Mountains changed its calculation of adjusted book value per share (i) to include a discount for the firsttime value of money arising from the expected timing of cash payments of principal and interest on the BAM Surplus Notes and (ii) to add back the unearned premium reserve, net of deferred acquisition costs, at HG Global. See “NON-GAAP FINANCIAL MEASURES” on page 76.
Including the estimated net gain from the OneBeacon Transaction as if it had closed on June 30, 2017, book value per share would have been approximately $908 and adjusted book value per share would have been approximately $890 as of June 30, 2017. Had the OneBeacon Transaction closed on June 30, 2017, White Mountains’s book value per share would have increased 1.9% and adjusted book value per share would have increased 1.8% for the third quarter of 2017, driven primarily by good investment returns. See NON-GAAP FINANCIAL MEASURES on page 76.
The net gain from the OneBeacon Transaction recorded in the third quarter of 2017 increased by $34 per share to $150 per share from the estimated net gain reported in the second quarter of 2017. Approximately $26 per share was attributable to the decrease in the book value per share denominator from share repurchases in the third quarter of 2017. The remainder of the increase was attributable to (1) $4 per share from OneBeacon’s GAAP combined ratioregular dividend, which was 95% for bothpaid during the firstthird quarter of 2017, and (2) $4 per share from OneBeacon’s loss from operations. OneBeacon’s results from operations reduced OneBeacon’s equity in the first quarter of 2016. period between signing and closing, thereby increasing the gain recorded on the OneBeacon Transaction because the OneBeacon Transaction was a fixed price deal.
The loss ratio increased by one point to 58%GAAP total return on invested assets, including continuing operations and discontinued operations, was 1.4% and 4.3% for the third quarter and first quarternine months of 2017 compared to 0.9% and 3.3% for the third quarter and first nine months of 2016.

The fixed income portfolio returned 0.9% and 2.7% for the third quarter and first nine months of 2016, driven by increases2017, outperforming the longer duration Bloomberg Barclays U.S. Intermediate Aggregate Index returns of 0.7% and 2.3%, as interest rates rose in both periods. White Mountains’s portfolio of common equity securities, other long-term investments and high-yield fixed maturity investments returned 2.4% and 8.6% for the Programs, Healthcarethird quarter and Government Risks businesses, mostlyfirst nine months of 2017, underperforming the S&P 500 Index returns of 4.5% and 14.2%. The underperformance versus the S&P 500 Index return for the third quarter and first nine months of 2017 was primarily a result of asset allocation, as high yield fixed maturity investments failed to keep pace with the S&P 500 Index, and unfavorable performance in other long-term investments, primarily attributable to losses from foreign currency forward contracts. The losses from the foreign currency forward contracts were offset by decreases in several other lines. There was no net loss reserve development in either the firstcurrency gains from non-USD denominated fixed maturity investments and non-USD denominated common equity securities. See Summary of Investment Results on page 65.
During the third quarter of 2017, White Mountains repurchased and retired 821,842 of its common shares for $715
million at an average price per share of $870, or the first quarterapproximately 94% of 2016. The expense ratio decreased by one point to 37% for the first quarterWhite Mountains’s September 30, 2017 book value per share and 96% of White Mountains’s September 30, 2017 compared to the first quarter of 2016, driven by change in business mix and lower employee costs, which more than offset the negative impact of lower earned premiums. OneBeacon’s net written premiums decreased 8% to $257 million in the first quarter of 2017 compared to the first quarter of 2016, driven largely by decreases in its Programs, Entertainment and Healthcare businesses.adjusted book value per share.
BAM posted its best quarter since inception forBAM’s gross written premiums and member surplus contributions totaled $19 million and growth in claims-paying resources. Gross written premiums and member surplus contributions totaled $28$68 million in the third quarter and first quarternine months of 2017, compared to $14$21 million and $53 million in the third quarter and first quarternine months of 2016. Total pricing, (i.e., gross writtenwhich is premiums andplus member surplus contributions weighted by the par value of bonds insured)insured, was 119103 and 99 basis points in the third quarter and first quarternine months of 2017, up from 6269 and 63 basis points in the third quarter and first quarternine months of 2016. BAM insured municipal bonds with par value of $2.4$2.0 billion and $7.1 billion in the third quarter and first quarternine months of 2017, compared to $2.2$3.0 billion and $8.5 billion in the third quarter and first nine months of 2016. For the third quarter of 2017, the decrease was primarily due to lower new municipal bond issuance volume compared to the third quarter of 2016. For the first nine months of 2017, the lower insured volume was also due to rating uncertainty during Standard & Poor's review of BAM in the second quarter of 2017. BAM’s total claims paying resources increased $19$43 million to $662$687 million in the first quarternine months of 2017, compared to an increase of $6$28 million to $607$629 million in the first quarternine months of 2016.
The GAAP total return on invested assetsMediaAlpha’s pre-tax loss was 1.5% for$1 million and $3 million in the third quarter and first nine months of 2017, compared to $1 million and $3 million in both the third quarter and first nine months of 2016. MediaAlpha’s earnings before interest, taxes, depreciation and amortization (“EBITDA”) of $2 million and $5 million in the third quarter and first nine months of 2017, compared to $1 million and $6 million in the third quarter and first nine months of 2016. For the third quarter of 2017, the increase in EBITDA was primarily driven by increased gross profit contributions from the P&C and Health/Life verticals of $1 million. For the first quarter of 2016. The fixed income portfolio return for the first quarternine months of 2017, the decrease in EBITDA was just aheadprimarily driven by increased operating expenses of $2 million, partially offset by an increase in gross profit of $1 million.
In October 2017, White Mountains discovered that the former CEO of Wobi, one of its overseas portfolio companies, had been reporting overstated commission revenues and related receivables to White Mountains. As a result, White Mountains has revised certain of its previously issued financial statements. The revisions resulted in reductions to commission revenues and commissions receivable. In addition, the overstatements led White Mountains to write down the goodwill and other intangible assets related to Wobi to zero. See Note 16 — “Financial Statement Revisions” on page 43. Upon discovery of the longer duration Bloomberg Barclays U.S. Intermediate Aggregate Index. Fixed income duration increased slightly duringoverstatements, White Mountains initiated an investigation, conducted by outside counsel, of the quarter (from 2.6 yearsreporting of these overstatements by Wobi to 2.9 years) and credit quality remained strong.  Common equity securities returned 6.1% and high-yield investments returned 2.2%,White Mountains. That investigation is complete. Wobi is conducting a separate investigation with the assistance of Israeli counsel to support the preparation of Wobi’s standalone financial statements. The results of that separate investigation, which were in line with their respective indices, and other long-term investments returned 1.0%, primarily attributableis ongoing, are not expected to the impact of unconsolidated private capital investments, unfavorable mark-to-market adjustments to the OneBeacon Surplus Notes and currency hedges. See Summary of Investment Results on page 54.White Mountains’s financial statements.


Adjusted Book Value Per Share
The following table presentsDuring the second quarter of 2017, White Mountains’sMountains changed its calculation of adjusted book value per share (i) to include a discount for the time value of money arising from the expected timing of cash payments of principal and reconciles this non-GAAP measureinterest on the BAM Surplus Notes and (ii) to add back the most comparable GAAP measure.unearned premium reserve, net of deferred acquisition costs, at HG Global. See NON-GAAP FINANCIAL MEASURES on page 64.76.
The following table presents White Mountains’s book value per share and reconciles it to adjusted book value per share, a non-GAAP measure.
 March 31, 2017 December 31, 2016 March 31, 2016 September 30, 2017 June 30, 2017 December 31, 2016 September 30, 2016
Book value per share numerators (in millions):      
        
White Mountains’s common shareholders’ equity $3,625.2
 $3,603.3
 $3,785.9
 $3,468.8
 $3,619.0
 $3,582.7
 $3,637.0
Future proceeds from options (1)
 —
 29.7
 —
 —
 —
 29.7
 89.0
Time-value of money discount on expected future payments
on the BAM Surplus Notes (2)
 (161.8) (166.7) N/A N/A
HG Global’s unearned premium reserve (2)
 88.4
 81.5
 N/A N/A
HG Global’s net deferred acquisition costs (2)
 (19.6) (17.6) N/A N/A
Adjusted book value per share numerator
 $3,625.2
 $3,633.0
 $3,785.9
 $3,375.8
 $3,516.2
 $3,612.4
 $3,726.0
Book value per share denominators (in thousands of shares):    
  
    
  
  
Common shares outstanding 4,572.8
 4,563.8
 5,415.5
 3,750.0
 4,571.6
 4,563.8
 4,578.7
Unearned restricted shares (34.7) (25.9) (41.1) (22.7) (27.4) (25.9) (31.8)
Options assumed issued (1)
 —
 40.0
 —
 —
 —
 40.0
 120.0
Adjusted book value per share denominator 4,538.1
 4,577.9
 5,374.4
 3,727.3
 4,544.2
 4,577.9
 4,666.9
Book value per share $792.77
 $789.53
 $699.10
GAAP book value per share $925.04
 $791.61
 $785.01
 $794.33
Adjusted book value per share $798.83
 $793.58
 $704.45
 $905.72
 $773.77
 $789.08
 $798.40
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 December 31, 2016 and September 30, 2016 includes the impact of 40,000 non-qualified stock options that were exercisable for $742 per common share. Adjusted 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.
(2) Amount reflects White Mountains’s ownership in HG Global of 96.9%.

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 March 31,September 30, 2017, December 31, 2016, and March 31,September 30, 2016:
Millions March 31, 2017 December 31, 2016 March 31, 2016 September 30, 2017 December 31, 2016 September 30, 2016
Goodwill            
MediaAlpha $18.3
 $18.3
 $18.3
 $18.3
 $18.3
 $18.3
Wobi 5.8
 5.8
 5.8
Buzzmove 7.6
 7.6
 —
 7.6
 7.6
 7.6
Total goodwill 31.7
 31.7
 24.1
 25.9
 25.9
 25.9
Other intangible assets            
MediaAlpha 15.9
 18.3
 25.8
 11.0
 18.3
 20.7
Wobi and other 5.4
 5.9
 6.4
Buzzmove 0.9
 1.0
 1.1
Total other intangible assets 21.3
 24.2
 32.2
 11.9
 19.3
 21.8
Total goodwill and other intangible assets (1)
 53.0
 55.9
 56.3
 37.8
 45.2
 47.7
Goodwill and other intangible assets held for sale —
 —
 325.4
 —
 1.2
 6.7
Goodwill and other intangible assets attributed to non-controlling interests (16.9) (17.6) (134.4) (13.7) (17.1) (18.2)
Goodwill and other intangible assets included in book value $36.1
 $38.3
 $247.3
Goodwill and other intangible assets included in White Mountains's
common shareholders' equity		 $24.1
 $29.3
 $36.2
(1) See Note 6 -4 — “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 March 31,September 30, 2017 and 2016 follow:
 Three Months Ended Three Months Ended Nine Months Ended
 March 31, September 30, September 30,
Millions 2017 2016 2017 2016 2017 2016
Gross written premiums $317.0
 $321.7
 $10.9
 $12.3
 $42.9
 $35.9
Net written premiums $277.2
 $289.1
 $10.9
 $10.7
 $43.7
 $30.3
Revenues          
  
Earned insurance premiums $264.8
 $282.1
 $2.4
 $3.4
 $7.6
 $10.2
Net investment income 26.1
 17.9
 12.2
 9.6
 39.7
 18.2
Net realized and unrealized investment gains 51.3
 29.5
 32.5
 10.9
 102.5
 27.2
Advertising and commission revenues 38.8
 28.2
 103.9
 89.6
Other revenue 43.7
 39.8
 1.6
 4.7
 6.1
 18.0
Total revenues 385.9
 369.3
 87.5
 56.8
 259.8
 163.2
Expenses          
  
Losses and LAE 151.7
 161.1
Loss and loss adjustment expenses —
 2.2
 1.1
 6.8
Insurance acquisition expenses 46.6
 52.7
 .9
 1.3
 3.1
 4.4
Other underwriting expenses 51.8
 55.4
 .1
 .2
 .3
 .4
Cost of sales 33.1
 24.0
 88.7
 76.9
General and administrative expenses 91.3
 84.0
 41.7
 39.9
 154.9
 137.0
General and administrative expenses—intangible asset amortization 2.9
 3.1
 2.4
 2.5
 7.3
 7.9
Interest expense 3.7
 4.5
 .9
 .5
 1.8
 2.6
Total expenses 348.0
 360.8
 79.1
 70.6
 257.2
 236.0
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
Pre-tax (loss) income from continuing operations 8.4
 (13.8) 2.6
 (72.8)
Income tax benefit 4.0
 17.1
 5.3
 22.7
Net income (loss) from continuing operations 12.4
 3.3
 7.9
 (50.1)
Income on sale of discontinued operations, net of tax 554.3
 47.9
 552.7
 414.5
Net (loss) income from discontinued operations, net of tax (15.2) 36.5
 20.5
 100.9
Net income 33.0
 19.3
 551.5
 87.7
 581.1
 465.3
Net loss (income) attributable to non-controlling interests 1.3
 (6.3) 10.6
 3.1
 23.6
 (24.6)
Net income attributable to White Mountains’s common shareholders 34.3
 13.0
 562.1
 90.8
 604.7
 440.7
Change in foreign currency translation and pension liability, net of tax .9
 .1
Change in foreign currency translation, net of tax —
 .2
 .2
 (.4)
Change in foreign currency translation and other from
discontinued operations, net of tax
 —
 37.2
 3.0
 (.3) 3.2
 145.8
Comprehensive income 565.1
 90.7
 608.1
 586.1
Comprehensive income attributable to non-controlling interests —
 .1
 (.1) .1
Comprehensive income attributable to White Mountains’s
common shareholders
 $35.2
 $50.3
 $565.1
 $90.8
 $608.0
 $586.2

Consolidated Results - Three Months Ended March 31,September 30, 2017 versus Three Months Ended March 31,September 30, 2016
White Mountains’s total revenues increased 4%54% to $386$88 million in the firstsecond quarter of 2017, driven by higher investment returns. Earned insurance premiums decreased 6% to $265 million, driven largely by risk-selection refinement in OneBeacon's Programs, Entertainment and Healthcare businesses. Net realized and unrealized investment gains increased to $51$33 million in the firstthird quarter of 2017, compared to $30$11 million in the firstthird quarter of 2016. Net investment income was $26$12 million in the firstthird quarter of 2017 compared to $18$10 million in the firstthird quarter of 2016. The improved investment results were driven primarily by higher equity returns in the third quarter of 2017 compared to the third quarter of 2016. See Summary of Investment Results on page 54.65. Advertising and commission revenues were $39 million in the third quarter of 2017, compared to $28 million in third quarter of 2016. The increase was primarily driven by $6 million of revenue growth in MediaAlpha's property and casualty (“P&C”) verticals, which includes auto, motorcycle, and home insurance, and $5 million of revenue growth in the non-P&C verticals, which include Health/Life, Travel and other verticals.
White Mountains’s total expenses decreased 4%increased 12% to $348$79 million in the first 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 firstthird quarter of 2017, orprimarily due to cost of sales, which increased 38% to $33 million in the firstthird quarter of 2017, compared to $24 million in the third quarter of 2016. Insurance acquisition expenses decreased 12% due to OneBeacon's decreaseThe increase in premium volume, change in business mix and lower employee costs. See OneBeacon on page 48.
General and administrative expenses increased 9% to $91 million in the first quartercost of 2017,sales was driven by $14 million of additional compensation expense recordedthe 37% increase in the first quarter of 2017 related to the retirement of the Company’s former Chairman and CEO. Incentive compensation costs also reflect increases of 5% and 10% to White Mountains’s common share market price during the first quarter of 2017 and the first quarter of 2016.revenue at MediaAlpha.


White Mountains’s effective tax rate for the three months ended March 31,third quarter 2017 was 10.3%(47.6)%. White Mountains’s incomeeffective tax benefitrate related to pre-tax income from continuing operations for the three months ended March 31,third quarter of 2017 was different from the U.S. statutory rate of 35% primarily due to a full valuation allowance on all U.S. operations, a tax benefit recorded at BAM, and consolidated pre-tax loss being near break-even.  For the third quarter of 2017, BAM had amounts recorded in shareholders’ equity related to its member surplus contributions that were available to partially offset its loss from continuing operations.  As a result, BAM recorded a tax benefit of $2 million in net income from continuing operations, with an offsetting amount recorded in shareholders’ equity. 
White Mountains’s effective tax rate for the third quarter of 2016 was (123.9)%. White Mountains’s effective tax rate related to pre-tax loss from continuing operations for the third quarter of 2016 was different from the U.S. statutory rate of 35%, primarily due to a full valuation allowance on all U.S. operations and 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 on income that was recognized within discontinued operations. For the third quarter of 2016, BAM had amounts recorded in shareholders’ equity related to member surplus contributions that were available to partially offset its loss from continuing operations. As a result, BAM recorded a tax benefit of $3 million in net income from continuing operations, with an offsetting amount recorded in shareholders’ equity.

Consolidated Results - Nine Months Ended September 30, 2017 versus Nine Months Ended September 30, 2016
White Mountains’s total revenues increased 59% to $260 million in the first nine months of 2017, driven by higher investment returns. Net realized and unrealized investment gains increased to $103 million in the first nine months of 2017, compared to $27 million in the first nine months of 2016. Net investment income was $40 million in the first nine months of 2017 compared to $18 million in the first nine months of 2016. The improved investment results were driven primarily by higher equity returns in the first nine months of 2017 compared to the first nine months of 2016 and a larger invested asset base after receiving the proceeds from the sale of Sirius Group in the second quarter of 2016. See Summary of Investment Results on page 65. Advertising and commission revenues were $104 million in the first nine months of 2017, compared to $90 million in the first nine months of 2016. The increase was primarily driven by the continued growth in MediaAlpha’s non-P&C verticals.
White Mountains’s total expenses increased 9% to $257 million in the first nine months of 2017, primarily due to general and administrative expenses, which increased 13% to $155 million in the first nine months of 2017, and cost of sales, which increased 15% to $89 million in the first nine months of 2017. The increase in general and administrative expenses was driven by compensation expenses related to former company executives and higher incentive compensation costs resulting from the OneBeacon Transaction.  The increase in cost of sales was driven by the 14% increase in revenue at MediaAlpha.
White Mountains’s effective tax rate for the first quarternine months of 20162017 was lower than(203.9)%. White Mountains’s effective tax rate related to pre-tax income from continuing operations for the first nine months of 2017 was different from the U.S. statutory rate of 35%, primarily due to a $13full valuation allowance on all U.S. operations, a tax benefit recorded at BAM and consolidated pre-tax income being near break-even.  For the first nine months of 2017, BAM had amounts recorded in shareholders’ equity related to its member surplus contributions that were available to partially offset its loss from continuing operations.  As a result, BAM recorded a tax benefit of $7 million favorable settlement of the 2007-2009 IRS exam at OneBeacon. Future tax law changes that reduce the corporatein net income from continuing operations, with an offsetting amount recorded in shareholders’ equity. 
White Mountains’s effective tax rate would have an adverse effect onfor the first nine months of 2016 was (31.2)%. White Mountains's deferredMountains’s effective tax assets. For example, a reduction inrate related to pre-tax loss from continuing operations for the first nine months of 2016 was different from the U.S. federalstatutory rate of 35%, primarily due to a full valuation allowance on all U.S. operations and 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 on income that was recognized within discontinued operations. For the first nine months of 2016, BAM had amounts recorded in shareholders’ equity related to member surplus contributions that were available to partially offset its loss from continuing operations. As a result, BAM recorded a tax rate to between 20% and 15% would reduce the Company’sbenefit of $8 million in net deferred tax asset by $54 million to $72 million.income from continuing operations, with an offsetting amount recorded in shareholders’ equity.


I. Summary of Operations By Segment
 
White Mountains conducts its operations through three segments: (1) OneBeacon, (2) HG Global/BAM, (2) MediaAlpha and (3) Other Operations. While investment results are included in each segment,HG Global/BAM and Other Operations, 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 1311 — “Segment Information” to the Consolidated Financial Statements.
As a result of the Sirius Group and the Tranzact sales and the OneBeacon Transaction, the results of operations for Sirius Group, Tranzact and TranzactOneBeacon 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. See Note 1715 — “Held for Sale and Discontinued Operations”.
OneBeacon
Financial results and GAAP ratios for OneBeacon for the three months ended March 31, 2017 and 2016 follow:
  Three Months Ended
  March 31,
Millions 2017 2016
Gross written premiums $297.3
 $310.5
Net written premiums $256.9
 $280.1
     
Earned insurance premiums $261.8
 $278.6
Net investment income 12.2
 14.4
Net realized and unrealized investment gains 15.0
 16.6
Other revenue 3.4
 .9
Total revenues 292.4
 310.5
Losses and LAE 150.6
 158.8
Insurance acquisition expenses 45.3
 51.0
Other underwriting expenses 51.7
 55.3
General and administrative expenses 4.7
 3.6
General and administrative expenses—intangible asset amortization .3
 .3
Interest expense 3.3
 3.3
Total expenses 255.9
 272.3
Pre-tax income $36.5
 $38.2
     
GAAP ratios:    
Losses and LAE 58% 57%
Expense 37% 38%
Combined 95% 95%
The following table presents OneBeacon’s book value per share:
(Millions, except per share amounts) March 31, 2017 December 31, 2016 March 31, 2016
OneBeacon book value per share:    
  
OneBeacon’s common shareholders’ equity $1,033.4
 $1,021.3
 $1,016.6
OneBeacon common shares outstanding 94.7
 94.3
 94.3
OneBeacon book value per common share (1)
 $10.91
 $10.82
 $10.78
(1) OneBeacon declared and paid a regular quarterly dividend of $.21 per common share in the first quarter of 2017 and each quarter during 2016.

OneBeacon ended the first quarter of 2017 with a book value per share of $10.91, an increase of 2.8% for the quarter, including dividends.


OneBeacon Results—Three Months EndedMarch 31, 2017 versus Three Months EndedMarch 31, 2016
OneBeacon’s GAAP combined ratio was 95% for the first 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, driven by increased losses in OneBeacon's Programs, Healthcare and Government Risks businesses, mostly offset by decreases in several other lines. There was no net loss reserve development in either the first quarter of 2017 or the first quarter of 2016. The expense ratio decreased by one point to 37% for the first quarter of 2017 compared to the first quarter of 2016, driven by change in business mix and lower employee costs, which more than offset the negative impact of lower earned premiums.
OneBeacon’s net written premiums decreased 8% to $257 million in the first quarter of 2017 compared to the first quarter of 2016, driven largely by risk-selection refinement in its Programs ($16 million), Entertainment ($10 million) and Healthcare ($4 million) businesses. Excluding those businesses, net written premiums increased 3% for the first quarter of 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 6 points and 11 points for the first quarter of 2017 and 2016 as a result of the cost of the reinsurance programs more than offsetting the benefits from ceded losses. In the first quarter of 2016, Crop business reduced the gross combined ratio, but had no effect on the net combined ratio, as 100% of Crop results were ceded under the quota share reinsurance agreement that OneBeacon entered into on July 31, 2015 pursuant to its exit of the Crop business. Excluding the effects of the Crop business on the first quarter 2016 combined ratio, OneBeacon’s net combined ratio was higher than the gross combined ratio by 5 points, primarily from the cost of OneBeacon’s reinsurance 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 months endedMarch 31, 2017 and 2016:
  Three Months Ended March 31, 2017
Millions HG Global BAM Eliminations Total
Gross written premiums $—
 $18.7
 $—
 $18.7
Assumed (ceded) written premiums 12.6
 (12.6) —
 —
Net written premiums $12.6
 $6.1
 $—
 $18.7
         
Earned insurance premiums $1.5
 $.5
 $—
 $2.0
Net investment income .6
 2.0
 —
 2.6
Net investment income - BAM Surplus Notes 4.8
 —
 (4.8) —
Net realized and unrealized investment losses .3
 1.0
 —
 1.3
Other revenue —
 .4
 —
 .4
Total revenues 7.2
 3.9
 (4.8) 6.3
Insurance acquisition expenses .3
 .9
 —
 1.2
Other underwriting expenses —
 .1
 —
 .1
General and administrative expenses .3
 10.3
 —
 10.6
Interest expense - BAM Surplus Notes —
 4.8
 (4.8) —
Total expenses .6
 16.1
 (4.8) 11.9
Pre-tax income (loss) $6.6
 $(12.2) $—
 $(5.6)
Supplemental information:        
     Member Surplus Contributions (1)
 $—
 $9.6
 $—
 $9.6

  Three Months Ended March 31, 2016
Millions HG Global BAM Eliminations Total
Gross written premiums $—
 $6.8
 $—
 $6.8
Assumed (ceded) written premiums 5.1
 (5.1) —
 —
Net written premiums $5.1
 $1.7
 $—
 $6.8
         
Earned insurance premiums $.9
 $.3
 $—
 $1.2
Net investment income .5
 1.6
 —
 2.1
Net investment income - BAM Surplus Notes 4.5
 —
 (4.5) —
Net realized and unrealized investment gains 2.1
 4.9
 —
 7.0
Other revenue —
 .1
 —
 .1
Total revenues 8.0
 6.9
 (4.5) 10.4
Insurance acquisition expenses .2
 .7
 —
 .9
Other underwriting expenses —
 .1
 —
 .1
General and administrative expenses .5
 9.2
 —
 9.7
Interest expense - BAM Surplus Notes —
 4.5
 (4.5) —
Total expenses .7
 14.5
 (4.5) 10.7
Pre-tax income (loss) $7.3
 $(7.6) $—
 $(.3)
Supplemental information:        
    ��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 March 31, 2017 versus Three Months Ended March 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, 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,member surplus contribution, which is contributed to BAM’s qualified statutory capital and conveys to the issuer certain interests in BAM, including the right to receive dividends in the future, subject to regulatory approval. The remainder is a risk premium, which is recorded as gross written premiums.
During the second quarter of 2017, in order to further support BAM’s long-term capital position and business prospects, HG Global agreed to contribute the $203 million Series A BAM Surplus Notes (“Series A Notes”) into the supplemental collateral trust (the “Supplemental Trust”) at HG Re, HG Global’s wholly owned reinsurance subsidiary. The Supplemental Trust already holds the $300 million Series B BAM Surplus Notes (“Series B Notes” and, collectively with the Series A Notes, the “BAM Surplus Notes”). Assets held in the Supplemental Trust serve to collateralize HG Re’s obligations to BAM under the first loss reinsurance treaty between BAM and HG Re. HG Global and BAM also agreed to change the payment terms of the Series B Notes, so that payments will reduce principal and accrued interest on a pro rata basis, consistent with the payment terms on the Series A Notes. The terms of the Series B Notes had previously stipulated that payments would first reduce interest owed, then reduce principal owed once all accrued interest had been paid. The New York Department of Financial Services approved these changes in the third quarter of 2017.
During the second quarter of 2017, HG Global and BAM also made certain changes to the ceding commission arrangements under the reinsurance treaty between HG Re and BAM. These changes will accelerate growth in BAM’s statutory capital but will not impact the net risk premium ceded from BAM to HG Re. 
On June 6, 2017, S&P placed BAM on credit watch negative and initiated a detailed review of BAM’s financial strength rating. On June 26, 2017, S&P concluded its review and affirmed BAM’s “AA/Stable” financial strength rating.
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 endedSeptember 30, 2017 and 2016:

  Three Months Ended September 30, 2017
Millions HG Global BAM Eliminations Total
Gross written premiums $—
 $10.9
 $—
 $10.9
Assumed (ceded) written premiums 9.0
 (9.0) —
 —
Net written premiums $9.0
 $1.9
 $—
 $10.9
         
Earned insurance premiums $1.8
 $.6
 $—
 $2.4
Net investment income 1.0
 2.3
 —
 3.3
Net investment income - BAM Surplus Notes 4.8
 —
 (4.8) —
Net realized and unrealized investment gains .1
 .7
 —
 0.8
Other revenue —
 .2
 —
 .2
Total revenues 7.7
 3.8
 (4.8) 6.7
Insurance acquisition expenses .4
 .5
 —
 .9
Other underwriting expenses —
 .1
 —
 .1
General and administrative expenses .3
 10.3
 —
 10.6
Interest expense - BAM Surplus Notes —
 4.8
 (4.8) —
Total expenses .7
 15.7
 (4.8) 11.6
Pre-tax income (loss) $7.0
 $(11.9) $—
 $(4.9)
Supplemental information:        
     Member Surplus Contributions (1)
 $—
 $8.4
 $—
 $8.4
  Three Months Ended September 30, 2016
Millions HG Global BAM Eliminations Total
Gross written premiums $—
 $9.2
 $—
 $9.2
Assumed (ceded) written premiums 6.2
 (6.2) —
 —
Net written premiums $6.2
 $3.0
 $—
 $9.2
         
Earned insurance premiums $1.2
 $.3
 $—
 $1.5
Net investment income .6
 1.7
 —
 2.3
Net investment income - BAM Surplus Notes 4.5
 —
 (4.5) —
Net realized and unrealized investment gains (.3) (1.6) —
 (1.9)
Other revenue —
 .4
 —
 .4
Total revenues 6.0
 .8
 (4.5) 2.3
Insurance acquisition expenses .2
 .6
 —
 .8
Other underwriting expenses —
 .1
 —
 .1
General and administrative expenses .6
 9.3
 —
 9.9
Interest expense - BAM Surplus Notes —
 4.5
 (4.5) —
Total expenses .8
 14.5
 (4.5) 10.8
Pre-tax income (loss) $5.2
 $(13.7) $—
 $(8.5)
Supplemental information:        
     Member Surplus Contributions (1)
 $—
 $11.5
 $—
 $11.5
(1) Member surplus contributions are recorded directly to BAM's equity, which is recorded as non-controlling interest on White Mountains's balance sheet.


  Nine Months Ended September 30, 2017
Millions HG Global BAM Eliminations Total
Gross written premiums $—
 $42.0
 $—
 $42.0
Assumed (ceded) written premiums 35.4
 (35.4) —
 —
Net written premiums $35.4
 $6.6
 $—
 $42.0
         
Earned insurance premiums $5.0
 $1.6
 $—
 $6.6
Net investment income 2.4
 6.5
 —
 8.9
Net investment income - BAM Surplus Notes 14.3
 —
 (14.3) —
Net realized and unrealized investment gains .4
 2.8
 —
 3.2
Other revenue —
 .8
 —
 .8
Total revenues 22.1
 11.7
 (14.3) 19.5
Insurance acquisition expenses 1.0
 2.0
 —
 3.0
Other underwriting expenses —
 .3
 —
 .3
General and administrative expenses .8
 30.7
 —
 31.5
Interest expense - BAM Surplus Notes —
 14.3
 (14.3) —
Total expenses 1.8
 47.3
 (14.3) 34.8
Pre-tax income (loss) $20.3
 $(35.6) $—
 $(15.3)
Supplemental information:        
     Member Surplus Contributions (1)
 $—
 $25.7
 $—
 $25.7
(1) Member Surplus Contributions are recorded directly to BAM's equity, which is recorded as non-controlling interest on White Mountains's balance sheet.
  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
(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, 2017 versus Three Months Ended September 30, 2016
In the firstthird quarter of 2017, BAM insured $2.4$2.0 billion of municipal bonds, $2.0$1.9 billion of which were in the primary market, compared to $2.2$3.0 billion of municipal bonds, $2.1$2.7 billion of which were in the primary market, insured in the firstthird quarter of 2016. The decrease in par value insured by BAM in the third quarter of 2017 was primarily due to 22% lower new municipal bond issuance volume in the third quarter of 2017 compared to the third quarter of 2016. Gross written premiums and member surplus contributions totaled $28$19 million for the firstthird quarter of 2017, compared to $14$21 million for the firstthird quarter of 2016. Total pricing, (i.e.,which is gross written premiums andplus member surplus contributions, weighted by the par value of bonds insured)insured, was 119103 basis points in the firstthird quarter of 2017, up from 6269 basis points in the firstthird quarter of 2016.
HG Global reported GAAP pre-tax income of $7 million in the firstthird quarter of 2017, andcompared to $5 million the firstthird quarter of 2016. Results for the firstthird quarter of 2017 and the first quarter of 2016 were both driven by $5 million of interest income on the BAM Surplus Notes. The variable rate was 3.78% and 3.54% as of 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 consolidateconsolidates BAM’s results in its GAAP financial statements and its results are attributed to non-controlling interests. White Mountains reported $12 million of GAAP pre-tax loss from BAM in the firstthird quarter of 2017, compared to $8$14 million in the firstthird quarter of 2016. The increasedecrease in pre-tax loss was primarily due to lowerhigher investment results.returns. Results for the firstthird quarter of 2017 include $5 million of interest expense on the BAM Surplus Notes and $10 million of operating expenses, compared to $5 million of interest expense and $9 million of operating expenses in the firstthird quarter of 2016.BAM’s statutory net loss

HG Global/BAM Results—Nine Months Ended September 30, 2017 versus Nine Months Ended September 30, 2016
In the first nine months of 2017, BAM insured $7.1 billion of municipal bonds, $6.5 billion of which were in the primary market, compared to $8.5 billion of municipal bonds, $7.9 billion of which were in the primary market, insured in the first nine months of 2016. The decrease in par value insured by BAM in the first nine months of 2017 was $9primarily due to lower new municipal bond issuance volume in the third quarter of 2017 compared to the third quarter of 2016 and rating uncertainty during S&P’s review of BAM in the second quarter of 2017. Gross written premiums and member surplus contributions totaled $68 million and $8for the first nine months of 2017, compared to $53 million for the first nine months of 2016. Total pricing was 99 basis points in the first nine months of 2017, up from 63 basis points in the first nine months of 2016.
HG Global reported GAAP pre-tax income of $20 million in the first quarternine months of 2017, andcompared to $18 million in the first quarternine months of 2016. Results for the first nine months of 2017 were driven by $14 million of interest income on the BAM Surplus Notes, compared to $13 million of interest income in the first nine months of 2016. 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 is 3.78% for 2017 and was 3.54% for 2016.
White Mountains reported $36 million of GAAP pre-tax loss from BAM in the first nine months of 2017, compared to $30 million in the first nine months of 2016. Results for the first nine months of 2017 include $14 million of interest expense on the BAM Surplus Notes and $31 million of operating expenses, compared to $13 million interest expense and $28 million of operating expenses in the first nine months of 2016. The increase in pre-tax loss in the first nine months of 2017 was primarily due to lower realized and unrealized investment gains.


Claims Paying Resources
BAM’s “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 and contingency reserves, net unearned premiums, contingency reserves, present value of future installment premiums and member surplus contributions and the first loss reinsurance protection provided by HG Re, which is collateralized and held in trusts. BAM expects Member Surplus Contributionsmember surplus contributions and HG Re’s reinsurance protection to be the primary drivers of continued growth of its claims-paying resources.
As of March 31,September 30, 2017, BAM’s claims paying resources increased 3%7% to $662$687 million from $644 million as of December 31, 2016. The increase was primarily driven by a $12$26 million increase in the HG Re collateral trusts and $10$26 million of member surplus contributions, partially offset by BAM’s first quarter of 2017$19 million statutory net loss of $9 million.

for the nine months ended September 30, 2017.
The following table presents BAM’s total claims paying resources as of March 31,September 30, 2017 and December 31, 2016:
Millions March 31, 2017 December 31, 2016 September 30, 2017 December 31, 2016
Policyholders’ surplus $429.2
 $431.5
 $429.2
 $431.5
Contingency reserve 25.5
 22.7
 31.6
 22.7
Qualified statutory capital 454.7
 454.2
 460.8
 454.2
Net unearned premiums 29.2
 23.2
 27.9
 23.2
Present value of future installment premiums 3.3
 3.3
Present value of future installment premiums and member surplus
contributions
 8.8
 3.3
Collateral trusts 175.0
 163.0
 189.2
 163.0
Claims paying resources $662.2
 $643.7
 $686.7
 $643.7

As of March 31,September 30, 2016, BAM'sBAM’s claims paying resources increased 1%5% to $607$629 million from $601 million as of December 31, 2015. The increase was primarily driven by $7$28 million of Member Surplus Contributionsmember surplus contributions and $6$18 million increase in the HG Re collateral trusts, partially offset by BAM's first three months of 2016BAM’s statutory net loss for the nine months ended of $8$24 million.
The following table presents BAM’s total claims paying resources as of March 31,September 30, 2016 and December 31, 2015:
Millions March 31, 2016 December 31, 2015 September 30, 2016 December 31, 2015
Policyholders’ surplus $433.4
 $437.2
 $432.8
 $437.2
Contingency reserve 14.8
 12.4
 19.9
 12.4
Qualified statutory capital 448.2
 449.6
 452.7
 449.6
Net unearned premiums 14.0
 12.5
Present value of future installment premiums 2.7
 2.6
Net unearned statutory premiums 18.8
 12.5
Present value of future installment premiums and member surplus
contributions
 3.3
 2.6
Collateral trusts 142.2
 136.6
 154.2
 136.6
Claims paying resources $607.1
 $601.3
 $629.0
 $601.3

HG Global/BAM Balance Sheets
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 March 31,September 30, 2017 and December 31, 2016:
  March 31, 2017
Millions HG Global BAM Eliminations and Segment Adjustment Total
Assets        
Fixed maturity investments $155.3
 $447.8
 $—
 $603.1
Short-term investments 18.6
 43.5
 —
 62.1
Total investments 173.9
 491.3
 —
 665.2
Cash 1.4
 10.5
 —
 11.9
BAM Surplus Notes 503.0
 —
 (503.0) —
Accrued interest receivable on BAM Surplus Notes 112.8
 —
 (112.8) —
Other assets 13.5
 9.6
 (1.0) 22.1
Total assets $804.6
 $511.4
 $(616.8) $699.2
         
Liabilities        
BAM Surplus Notes(1)
 $—
 $503.0
 $(503.0) $—
Accrued interest payable on BAM Surplus Notes(2)
 —
 112.8
 (112.8) —
Preferred dividends payable to White Mountains’s subsidiaries(3)
 191.9
 —
 —
 191.9
Preferred dividends payable to non-controlling interests 6.4
 —
 —
 6.4
Other liabilities 72.4
 48.6
 (1.0) 120.0
Total liabilities 270.7
 664.4
 (616.8) 318.3
         
Equity        
White Mountains’s common shareholders’ equity 517.4
 —
 —
 517.4
Non-controlling interests 16.5
 (153.0) —
 (136.5)
Total equity 533.9
 (153.0) —
 380.9
Total liabilities and equity $804.6
 $511.4
 $(616.8) $699.2

 December 31, 2016 September 30, 2017
Millions HG Global BAM Eliminations and Segment Adjustment Total Segment HG Global BAM Eliminations and Segment Adjustment Total
Assets                
Fixed maturity investments $155.2
 $430.0
 $—
 $585.2
 $185.1
 $446.3
 $—
 $631.4
Short-term investments 6.4
 38.1
 —
 44.5
 32.6
 43.2
 —
 75.8
Total investments 161.6
 468.1
 —
 629.7
 217.7
 489.5
 —
 707.2
Cash 1.9
 25.1
 —
 27.0
 1.1
 18.1
 —
 19.2
BAM Surplus Notes 503.0
 —
 (503.0) —
 503.0
 —
 (503.0) —
Accrued interest receivable on BAM Surplus Notes 108.0
 —
 (108.0) —
 122.3
 —
 (122.3) —
Deferred acquisition costs 20.1
 (6.0) —
 14.1
Insurance premiums receivable 2.6
 4.6
 (2.8) 4.4
Accounts receivable on unsettled investment sales 12.4
 .1
 —
 12.5
Other assets 12.5
 39.9
 (1.0) 51.4
 .5
 7.9
 —
 8.4
Total assets $787.0
 $533.1
 $(612.0) $708.1
 $879.7
 $514.2
 $(628.1) $765.8
        
Liabilities                
BAM Surplus Notes(1)
 $—
 $503.0
 $(503.0) $—
 $—
 $503.0
 $(503.0) $—
Accrued interest payable on BAM Surplus Notes(2)
 —
 108.0
 (108.0) —
 —
 122.3
 (122.3) —
Preferred dividends payable to White Mountains’s subsidiaries(3)
 180.5
 —
 —
 180.5
 216.1
 —
 —
 216.1
Preferred dividends payable to non-controlling interests 5.7
 —
 —
 5.7
 6.9
 —
 —
 6.9
Unearned insurance premiums 91.3
 27.2
 —
 118.5
Accounts payable on unsettled investment purchases 41.8
 2.3
 —
 44.1
Other liabilities 61.4
 73.0
 (1.0) 133.4
 .7
 19.6
 (2.8) 17.5
Total liabilities 247.6
 684.0
 (612.0) 319.6
 356.8
 674.4
 (628.1) 403.1
        
Equity                
White Mountains’s common shareholders’ equity 522.8
 —
 —
 522.8
 506.7
 —
 —
 506.7
Non-controlling interests 16.6
 (150.9) —
 (134.3) 16.2
 (160.2) —
 (144.0)
Total equity 539.4
 (150.9) —
 388.5
 522.9
 (160.2) —
 362.7
Total liabilities and equity $787.0
 $533.1
 $(612.0) $708.1
 $879.7
 $514.2
 $(628.1) $765.8
(1) 
Under GAAP, the BAM Surplus Notes are classified as debt by the issuer. Under U.S. Statutory accounting, they are classified as Surplus.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.


  December 31, 2016
Millions HG Global BAM Eliminations and Segment Adjustment Total Segment
Assets        
Fixed maturity investments $155.2
 $430.0
 $—
 $585.2
Short-term investments 6.4
 38.1
 —
 44.5
Total investments 161.6
 468.1
 —
 629.7
Cash 1.9
 25.1
 —
 27.0
BAM Surplus Notes 503.0
 —
 (503.0) —
Accrued interest receivable on BAM Surplus Notes 108.0
 —
 (108.0) —
Deferred acquisition costs 11.0
 (.4) —
 10.6
Insurance premiums receivable .9
 1.7
 (1.0) 1.6
Other assets .6
 38.6
 —
 39.2
Total assets $787.0
 $533.1
 $(612.0) $708.1
Liabilities        
BAM Surplus Notes(1)
 $—
 $503.0
 $(503.0) $—
Accrued interest payable on BAM Surplus Notes(2)
 —
 108.0
 (108.0) —
Preferred dividends payable to White Mountains’s subsidiaries(3)
 180.5
 —
 —
 180.5
Preferred dividends payable to non-controlling interests 5.7
 —
 —
 5.7
Unearned insurance premiums 60.7
 22.2
 —
 82.9
Other liabilities .7
 50.8
 (1.0) 50.5
Total liabilities 247.6
 684.0
 (612.0) 319.6
Equity        
White Mountains’s common shareholders’ equity 522.8
 —
 —
 522.8
Non-controlling interests 16.6
 (150.9) —
 (134.3)
Total equity 539.4
 (150.9) —
 388.5
Total liabilities and equity $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.

Par Value of Policies Issued and Priced by BAM
Periodically, BAM publishes the gross par value of policies priced during 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 endedMarch 31, September 30, 2017 and 2016:
 Three Months Ended Three Months Ended Nine Months Ended
 March 31, September 30, September 30,
Millions 2017 2016 2017 2016 2017 2016
Gross par value of primary market policies issued $2,041.0
 $2,096.8
 $1,872.5
 $2,736.6
 $6,487.8
 $7,917.0
Gross par value of secondary market policies issued 338.1
 81.8
 170.9
 236.7
 627.6
 574.1
Total gross par value of policies issued 2,379.1
 2,178.6
 2,043.4
 2,973.3
 7,115.4
 8,491.1
            
Gross par value of policies priced yet to close 328.3
 724.5
 535.2
 428.8
 535.2
 428.8
Less: Gross par value of policies closed that were previously priced (353.3) (298.6) (163.7) (861.8) (353.3) (298.6)
Total gross par value of policies priced $2,354.1
 $2,604.5
 $2,414.9
 $2,540.3
 $7,297.3
 $8,621.3


MediaAlpha
The following table presents the components of GAAP net loss and EBITDA included in White Mountains’s MediaAlpha segment for the three and nine months ended September 30, 2017 and 2016:
  Three Months Ended September 30, Nine Months Ended September 30,
Millions 2017 2016 2017 2016
Advertising and commission revenues $37.9
 $27.6
 $101.2
 $88.4
Cost of sales 32.2
 23.0
 86.0
 74.0
Gross profit 5.7
 4.6
 15.2
 14.4
General and administrative expenses—other 3.8
 3.2
 10.7
 8.7
General and administrative expenses—amortization of intangible assets 2.3
 2.5
 7.2
 7.6
Interest expense .1
 .2
 .6
 .7
GAAP pre-tax loss (.5) (1.3) (3.3) (2.6)
Income tax expense —
 —
 —
 —
GAAP net loss (.5) (1.3) (3.3) (2.6)
         
Add back:        
Interest expense .1
 .2
 .6
 .7
Income tax expense —
 —
 —
 —
General and administrative expenses—depreciation —
 —
 .1
 .1
General and administrative expenses—amortization of intangible assets 2.3
 2.5
 7.2
 7.6
EBITDA $1.9
 $1.4
 $4.6
 $5.8

MediaAlpha Results—Three Months EndedSeptember 30, 2017 versus Three Months EndedSeptember 30, 2016
MediaAlpha reported net loss of $1 million in both the third quarter of 2017 and the third quarter of 2016. EBITDA was $2 million in the third quarter of 2017, compared to $1 million in the third quarter of 2016. For the third quarter of 2017, the increase in EBITDA was primarily driven by increased gross profit contributions from the P&C and Health/Life verticals of $1 million.
Advertising and commission revenues were $38 million in the third quarter of 2017, compared to $28 million in third quarter of 2016. The increase was primarily driven by $6 million of revenue growth in MediaAlpha's P&C verticals and $5 million of revenue growth in the non-P&C verticals.
MediaAlpha’s cost of sales is comprised primarily of revenue share based payments to partners. Cost of sales were $32 million in the third quarter of 2017, compared to $23 million in the third quarter of 2016. The 40% increase in cost of sales was driven by the 37% increase in revenue.

MediaAlpha Results—Nine Months Ended September 30, 2017 versus Nine Months Ended September 30, 2016
MediaAlpha reported net loss of $3 million in both the first nine months of 2017 and the first nine months of 2016. EBITDA was $5 million in the first nine months of 2017, compared to $6 million in the first nine months of 2016. For the first nine months of 2017, the decrease in EBITDA was primarily driven by increased operating expenses of $2 million, partially offset by an increase in gross profit of $1 million.
Advertising and commission revenues were $101 million in the first nine months of 2017, compared to $88 million in the first nine months of 2016. The increase was primarily driven by the continued growth in MediaAlpha’s non-P&C verticals. Advertising and commission revenues in MediaAlpha’s P&C verticals were flat in the first nine months of 2017 compared to the first nine months of 2016.
Cost of sales were $86 million in the first nine months of 2017, compared to $74 million in the first nine months of 2016. The 16% increase in cost of sales was driven by the 14% increase in revenue.


Other Operations

A summary of White Mountains’s financial results from its Other Operations segment for the three and nine months ended March 31,September 30, 2017 and 2016 follows:
 Three Months Ended Three Months Ended Nine Months Ended
 March 31, September 30, September 30,
Millions 2017 2016 2017 2016 2017 2016
Earned insurance premiums $1.0
 $2.3
 $—
 $1.9
 $1.0
 $6.1
Net investment income 11.3
 1.4
 8.9
 7.3
 30.8
 11.5
Net realized and unrealized investment gains 35.0
 5.9
 31.7
 12.8
 99.3
 18.4
Other revenue—MediaAlpha 32.5
 32.7
Other revenue—Other 7.4
 6.1
Advertising and commission revenues 0.9
 .6
 2.7
 1.2
Other revenues 1.4
 4.3
 5.3
 17.2
Total revenues 87.2
 48.4
 42.9
 26.9
 139.1
 54.4
Loss and loss adjustment expenses 1.1
 2.3
 —
 2.2
 1.1
 6.8
Insurance acquisition expenses .1
 .8
 —
 .5
 .1
 1.9
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 2.6
 2.8
Other underwriting expenses —
 .1
 —
 .1
Cost of sales .9
 1.0
 2.7
 2.9
General and administrative expenses — other 27.3
 26.8
 112.7
 98.8
General and administrative expenses — amortization of intangible assets .1
 —
 .1
 .3
Interest expense .4
 1.2
 .8
 .3
 1.2
 1.9
Total expenses 80.2
 77.8
 29.1
 30.9
 117.9
 112.7
Pre-tax income (loss) $7.0
 $(29.4) $13.8
 $(4.0) $21.2
 $(58.3)

Other Operations Results—Three Months Ended March 31,September 30, 2017 versus Three Months Ended March 31,September 30, 2016
White Mountains’s Other Operations segment reported pre-tax income of $7$14 million in the firstthird quarter of 2017, compared to pre-tax loss of $29$4 million in the firstthird quarter of 2016. The improved results primarily were driven by higher investment returns, mostly due to a larger invested asset base resulting from the proceeds of the sale of Sirius Group.returns. White Mountains’s Other Operations segment reported $35$32 million of net realized and unrealized investment gains in the firstthird quarter of 2017 compared to $13 million of net realized and unrealized investment gains of$6 million in the firstthird quarter of 2016. White Mountains’s Other Operations segment reported $11$9 million of net investment income in the firstthird quarter of 2017 compared to net investment income of $1$7 million in the firstthird quarter of 2016. See Summary of Investment Results on page 54.65. White Mountains’s Other Operations segment other revenues included $33were $1 million from MediaAlpha in both the firstthird quarter of 2017, compared to $4 million in the third quarter of 2016, primarily driven by third party fees at WM Advisors. During the third quarter of 2016, WM Advisors received asset management fees from Symetra and Sirius Group during the transitional periods subsequent to each transaction, both of which expired before the end of 2016. 

Other Operations Results—Nine Months Ended September 30, 2017 versus Nine Months Ended September 30, 2016
White Mountains’s Other Operations segment reported pre-tax income of $21 million in the first quarternine months of 2017, compared to pre-tax loss of $58 million in the first nine months of 2016. White Mountains’s Other Operations segment reported net realized and unrealized investment gains of $99 million in the first nine months of 2017 compared to net realized and unrealized investment gains of $18 million in the first nine months of 2016. White Mountains’s Other Operations segment reported $31 million of net investment income in the first nine months of 2017 compared to net investment income of $12 million in the first nine months of 2016. See Summary of Investment Results on page 65. White Mountains’s Other Operations segment other revenues were $5 million in the first nine months of 2017, compared to $17 million in the first nine months of 2016. The decrease was primarily driven by lower third party fees at WM Advisors. During the first nine months of 2016, WM Advisors received asset management fees from Symetra and Sirius Group during the transitional periods subsequent to each transaction, both of which expired before the end of 2016.  White Mountains’s Other Operations segment general and administrative expenses included $31were $113 million from MediaAlpha in both the first quarternine months of 2017, and thecompared to $99 million in first quarternine months of 2016. White Mountains’s Other Operations segmentThe increase in general and administrative expenses increased $5 million in the first quarter of 2017 compared to the first quarter of 2016,was driven by $14 million of additional compensation expense recorded in the first quarter of 2017expenses related to the retirement of the Company’s former Chairmancompany executives and CEO, which was partially offset by higher incentive compensation costs inresulting from the first quarter of 2016 from a larger increase in the market price of White Mountains's common shares during the first quarter of 2016 compared to the first quarter of 2017. Incentive compensation costs reflect increases of 5% and 10% to White Mountains’s common share market price during the first quarter of 2017 and the first quarter of 2016.OneBeacon Transaction. 


Discontinued Operations

OneBeacon
On September 28, 2017, White Mountains received $1.3 billion in cash proceeds from the OneBeacon Transaction and recorded a gain of $555 million, net of transaction costs. As a result of the OneBeacon Transaction, OneBeacon’s results have been reported as discontinued operations within White Mountains’s GAAP financial statements.
White Mountains reported a net loss of $15 million from OneBeacon in discontinued operations in the third quarter of 2017, driven primarily by underwriting losses. OneBeacon’s combined ratio for the third quarter of 2017 was 113%, driven by 9 points of net unfavorable loss reserve development, primarily in the Program, Healthcare and Government Risk businesses, and 9 points of catastrophe losses primarily due to losses from Hurricane Harvey.
White Mountains reported net income from OneBeacon of $21 million in discontinued operations in the first nine months of 2017. OneBeacon’s combined ratio for the first nine months of 2017 was 105%, driven by 4 points of net unfavorable loss reserve development, primarily in the Program, Healthcare and Government Risk businesses, and 4 points of catastrophe losses, primarily due to losses from Hurricane Harvey. See Note 15 — “Held for Sale and Discontinued Operations”.

Tranzact
On July 21, 2016, White Mountains completed the sale of Tranzact to an affiliate of Clayton, Dubilier & Rice, LLC. Tranzact’s results inured to White Mountains until the closing date of the transaction. Net loss from discontinued operations related to Tranzact was $2 million and $3 million for the third quarter and first nine months of 2016. See Note 15 — “Held for Sale and Discontinued Operations”.

Sirius Group
On April 18, 2016, White Mountains completed the sale of Sirius Group to CMI. Sirius Group’s results inured to White
Mountains until the closing date of the transaction. For the three months ended March, 31, 2016, White Mountains reported Sirius Group’s combined ratio of 93% and comprehensive income from discontinued operations of $36 million. See Note 17 — “Held for Sale and Discontinued Operations”.

Tranzact Sale
On July 21, 2016, White Mountains completed the sale of Tranzact to an affiliate of Clayton, Dubilier & Rice, LLC.
Tranzact's results inured to White Mountainssecond quarter stub period up until the closing date of the transaction.transaction, Sirius Group reported a comprehensive loss of $9 million, primarily due to $17 million of recorded losses from the Ecuador earthquake that occurred on April 16, 2016. For the three months ended March 31,first quarter of 2016, White MountainsSirius Group reported Tranzact’s net loss from discontinued operationscomprehensive income of $2 million.$36 million, reflecting a combined ratio of 93%. See Note 1715 — “Held for Sale and Discontinued Operations”.

II. Summary of Investment Results
 
White Mountains’s total investment results include continuing operations and discontinued operations. During the first quarter of 2015, White Mountains signed an agreement to sellThe OneBeacon and Sirius Group which closed on April 18, 2016. Sirius Group’sinvestment results inured to White Mountains through the closing date of the transaction.are included in discontinued operations for each respective period.
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 has included the returns associated with the high-yield fixed maturity investments with the returns from common equity securities and other long-term investments. See “NON-GAAP FINANCIAL MEASURES” on page 64.76.
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

The following table summarizes White Mountains’s consolidated total operations’ pre-tax investment results, including returns from discontinued operations, for the three and nine months ended March 31,September 30, 2017 and 2016 follows:2016:  

Gross investment returns and benchmark returns
  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.
  Three Months Ended Nine Months Ended
  September 30, September 30,
  2017 2016 2017 2016
Short-term investments 0.3 % 0.1% 0.5 % 0.7%
Investment grade fixed maturity investments 0.9 % 0.4% 2.8 % 3.1%
High-yield fixed maturity investments 1.7 % 1.0% 7.1 % 1.0%
Total GAAP fixed income investments 1.0 % 0.4% 3.0 % 2.9%
Total fixed income investments, excluding high-yield fixed maturity investments: 0.9 % 0.4% 2.7 % 2.9%
Bloomberg Barclays U.S. Intermediate Aggregate Index 0.7 % 0.3% 2.3 % 4.1%
         
Common equity securities 4.3 % 4.9% 14.4 % 5.2%
Other long-term investments (2.3)% 2.6% (2.9)% 6.4%
Total GAAP common equity securities and other long-term investments 2.6 % 3.9% 9.0 % 5.6%
Total common equity securities, other long-term investments and high-yield fixed
     maturity investments
 2.4 % 3.5% 8.6 % 5.4%
S&P 500 Index 4.5 % 3.9% 14.2 % 7.8%
Bloomberg Barclays U.S. High Yield Ba 2% Issuer Capped (minus Energy & Financials) 1.9 % 1.6% 6.7 % 1.6%
         
Total consolidated portfolio 1.4 % 0.9% 4.3 % 3.3%

 

Investment Returns—Three and Nine Months Ended March 31,September 30, 2017 versus Three and Nine Months Ended March 31,September 30, 2016
White Mountains’s GAAP pre-tax total return on invested assets was 1.5%1.4% and 4.3% for both the third quarter and first nine months of 2017. White Mountains’s GAAP pre-tax total return on invested assets was 0.9% and 3.3% for the third quarter of 2017 and the first quarternine months of 2016. The returns for the third quarter and first quarternine months of 2017 were driven primarily by the continuing post electioncontinued equity market rally, while returns for the 2016 periods were impacted by strong equity returns in the third quarter of 2016 and a decline in interest rates for the first quarter 2016 returns were boosted by falling interest rates.nine months of 2016.

Fixed income results
White Mountains maintains a high-quality, short-duration fixed income portfolio. As of March 31,September 30, 2017, the fixed income portfolio duration, including short-term investments but excluding high-yield fixed maturity investments, was approximately 2.92.7 years, compared to 2.6 years as of December 31, 2016 and 2.0 years as of March 31,September 30, 2016. Including both short-term and high-yield fixed maturity investments, duration was approximately 3.02.9 years as of March 31,September 30, 2017.
The increase in the duration of the fixed income portfolio from the comparative periodsover this period 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.third-party manager, in the fourth quarter of 2016. The duration of the LGIM portfolio was approximately 7.37.5 years as of March 31,September 30, 2017. White Mountains has entered into a foreign currency forward contractscontract, which is recorded in other long-term investments, to manage its GBP foreign currency exposure relating to this mandate. As of March 31,September 30, 2017, these contractsthe contract had a total gross notional value of approximately $247$201.3 million (GBP 200150 million). and a carrying value of $(14.1) million.
The fixed income portfolio returned 0.9% and 2.7% for the third quarter and first quarternine months of 2017, outperforming the longer duration Bloomberg Barclays U.S. Intermediate Aggregate Index returnreturns of 0.7%. and 2.3%, as interest rates rose in both periods. The fixed income portfolio returned 1.5%0.4% and 2.9% for the third quarter and first quarternine months of 2016, underperformingslightly outperforming the longer duration Bloomberg Barclays U.S. Intermediate Aggregate Index return of 2.3%.0.3% for the third quarter of 2016 and underperforming the 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 period.


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 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 23%37%, 20%, and 14%19% of total GAAP invested assets as of March 31,September 30, 2017, December 31, 2016, and March 31,September 30, 2016. The increase in the percentage of this portfolio is primarily attributable to management’s conscious decision to add equity exposure during the year and a decline in the investment asset base due to the OneBeacon Transaction and share repurchase activity.
White Mountains’s portfolio of common equity securities, other long-term investments and high-yield fixed maturity investments returned 3.7%2.4% and 8.6% for the third quarter and first quarternine months of 2017, underperforming the S&P 500 Index returnreturns of 6.1%4.5% and 14.2%. The underperformance versus the S&P 500 Index return for the third quarter and first nine months of 2017 was primarily attributable to (i)a result of asset allocation, as high-yieldhigh yield fixed maturity investments did notfailed to keep pace with common equity securities for the quarter,S&P 500 Index, and (ii) unfavorable performance in other long-term investments, primarily attributable to losses from foreign currency forward contracts. The losses on the impact of unconsolidated private capitalforeign currency forward contracts were offset by the currency gains from non-USD denominated fixed maturity investments unfavorable mark-to-market adjustments to the OneBeacon Surplus Notes and currency hedges.non-USD denominated common equity securities.
White Mountains’s portfolio of common equity securities primarily consists of passive ETFs and publicly-traded common equity securities that are actively managed by third party registered investment advisers.managers. White Mountains’s portfolio of common equity securities returned 4.3% and ETFs returned 6.1%14.4% for the third quarter and first quarternine months of 2017, in line withunderperforming the S&P 500 Index return of 6.1%.4.5% for the third quarter and outperforming the S&P 500 Index return of 14.2% for the first nine months of 2017.
The portfolio of ETFs seeks to provide investment results that, before expenses, generally correspond to the performance of broad market indices. As of March 31,September 30, 2017 and December 31, 2016, White Mountains had $385$493 million and $322 million invested in ETFs, respectively.S&P 500 ETFs. During the third quarter and first quarternine months of 2017 and 2016, the ETFs essentially earned the effective index return, before expenses, over the period in which White Mountains was invested in these funds.
White Mountains’s third party registered investment advisermanager relationships (the “actively managed portfolios”) have been with Silchester International Investors (“Silchester”), who invests in value-oriented non-U.S. equity securities through an open-endeda unit trust, and Lateef Investment Management (“Lateef”), a growth at a reasonable price adviser managing a highly concentrated portfolio of mid-cap and large-cap growth companies. During the first quarter of 2017, White Mountains established a new third party manager relationship with Lazard Asset Management (“Lazard”), to manage a Pan-European common equity portfolio, of which the majority of the securities are denominated in Euros (EUR). In September 2017, White Mountains terminated its relationship with Lazard in order to concentrate its non-U.S. equity exposure in small to mid-cap international equities through other third-party managers. During the third quarter of 2017 and prior to terminating Lazard, White Mountains established a new third party manager relationship with Highclere International Investors ("Highclere"), who invests in small to mid-cap equity securities listed in markets outside of North America through a unit trust.
The actively managed portfolioportfolios of common equity securities returned 6.9%5.0% and 19.4% for the third quarter and first quarternine months of 2017, outperforming the S&P 500 Index return of 6.1%.4.5% and 14.2% for the comparable periods. The actively managed portfolioportfolios of common equity securities returned 1.0%5.4% and 3.4% for the third quarter and first quarternine months of 2016, laggingoutperforming the S&P 500 Index return of 1.3%.
In3.9% for the third quarter and underperforming the S&P 500 Index return of 7.8% for the first quarternine months of 2017, 2016.
White Mountains entered into a foreign currency forward contractcontracts, which are recorded in other long-term investments, to manage the bulk of its foreign currency exposure associated withrelating to the common equity portfolio managed by Lazard.Lazard and a portion of the equity portfolios managed by Silchester and Highclere. As of March 31,September 30, 2017, the contractthese contracts had a total gross notional value of approximately $53$60.5 million (EUR 5019 million, GBP 11 million and JPY 2,646 million). and a carrying value of $(1.3) million.
White Mountains maintains a portfolio of other long-term investments that consists primarily of hedge funds, private equity funds, unconsolidated private capital investments, the OneBeacon Surplus Notes,foreign currency forward contracts and various other investments. As of March 31,September 30, 2017, approximately 44%63% of these other long-term investments, excluding foreign currency forward contracts, were invested in private equity funds with a general emphasis on narrow, sector-focused investments, and hedge funds with a general emphasis on long-short equities.

White Mountains’s other long-term investments returned 1.0%-2.3% and -2.9% for the third quarter and first quarternine months of 2017. The results for the third quarter and first quarter of 2017nine months were primarily attributable to losses from foreign currency forward contracts, partially offset by a favorable mark-to-market adjustment to the impactOneBeacon Surplus Notes during the third quarter of unconsolidated2017 and strong private capitalequity fund and hedge fund results for the first nine months of 2017.
White Mountains’s other long-term investments unfavorablereturned 2.6% and 6.4% for the third quarter and first nine months of 2016. The results for the third quarter and first nine months of 2016 were primarily driven by write-downs in energy-exposed private equity funds, partially offset by favorable mark-to-market adjustments to the OneBeacon Surplus Notes and currency hedges. White Mountains’s other long-term investments returned 0.2% for the first quarter of 2016.  The return for the first quarter of 2016 was primarily attributable to favorable results from the OneBeacon Surplus Notes, partially offset by unfavorable results from private equity funds and hedge funds.Notes.
During the third quarter of 2016, White Mountains established a new relationship with Principal Global Investors, LLC (“Principal”), a third party registered investment adviser,third-party manager, to actively 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'sPoor’s or similar ratings from other rating agencies. The high-yield fixed maturity investments returned 2.2%1.7% and 7.1% for the third quarter and first quarternine months of 2017, outperformingunderperforming the Bloomberg Barclays U.S. High Yield Ba 2% Issuer Capped (minus Energy & Financials) Index return of 2.0%.1.9% for the quarter but outperforming the return of 6.7% for the first nine months of 2017.

Foreign Currency Translation
As of March 31,September 30, 2017, White Mountains hashad gross foreign currency exchange rate riskexposure on approximately $423$412.7 million of net assets:assets relating to cash and fixed income securities denominated in GBPmaturity investments managed by LGIM, cash and common equity securities denominated in Euros and other currencies managed by Lazard, common equity securities managed by Silchester Wobiand Highclere and various other consolidated and unconsolidated private capital investments.
White Mountains entered into foreign currency forward contracts to economically hedge the GBP and Euromitigate its foreign currency exposure for the invested assets managed by LGIM and Lazard. a portion of the invested assets managed by Silchester and Highclere.
The following table summarizes the fair value of theWhite Mountains’s foreign denominated assets for these mandates as well asand the gross notional amount and fair value of theassociated foreign currency forward contracts:contracts as of September 30, 2017:
$ 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
Currency(1)
 Fair Value (Gross) % of Common Shareholders' Equity Currency Hedge Fair Value (Net) % of Common Shareholders' Equity
GBP $253.2
 7.3% $(215.8) $37.4
 1.1%
JPY 60.4
 1.8% (23.6) 36.8
 1.1%
EUR 52.6
 1.5% (22.4) 30.2
 .9%
All other 46.5
 1.3% —
 46.5
 1.3%
Total $412.7
 11.9% $(261.8) $150.9
 4.4%

At March 31, 2017, White Mountains’s net foreign currency exchange rate risk was on(1) Includes net assets of approximately $119 million.Wobi and Buzzmove.

Investment in Symetra Common Shares
During the firstthird quarter of 2015, Symetra Financial Corporation (“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. 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 $5 million in pre-tax net investment gains associated with Symetra during the first quarter 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
 
Operating Cash and Short-term Investments

Holding company level. The primary sources of cash for the Company and certain of its intermediate holding companies 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, repayments 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, distributions 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 insurancereinsurance and other operating subsidiaries are expected to be premium and fee collections, net investment income, proceeds from sales, repayments 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 claimloss payments, policy acquisition and other underwriting costs, cost of sales, 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, premiumPremium and fee levels, loss payments, cost of sales and investment returns may be impacted by changing rates of inflation and other economic conditions. In many cases, significant periods ofSome 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 claimslosses and benefits cannot be predicted with certainty. White Mountains’s insurance subsidiaries maintain portfoliosreinsurance subsidiary maintains a portfolio 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.losses.
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 and the OneBeaconMediaAlpha 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 subsidiary level.

Dividend Capacity

Under the insurance laws of the states and jurisdictions that White Mountains’s insurance 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 insurancereinsurance and other operating subsidiaries:
OneBeacon:
OneBeacon’s top-tier regulated U.S. insurance 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 December 31, 2016, ASIC has the ability to pay $11 million of dividends without the prior approval of regulatory authorities. When taking into consideration the rolling 12-month portion of this statutorily-defined calculation, including adjusted net investment income and the 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 on April 27, 2017. As of December 31, 2016, ASIC had $625 million of statutory surplus and $69 million of earned surplus.
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 without the prior notification 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 1978 and the Companies Act of 1981. As of December 31, 2016, Split Rock had $210 million of statutory capital and $60 million of statutory surplus for total statutory capital and surplus of $270 million.

Based upon the limitations described above, Split Rock currently has the ability to distribute up to $32 million of statutory capital and pay up to $60 million of dividends 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 quarter of 2017, OneBeacon’s unregulated insurance subsidiaries paid $5 million of dividends to their immediate parent. As of March 31, 2017, OneBeacon’s unregulated insurance operating subsidiaries had $60 million of net unrestricted cash, short-term investments and fixed maturity investments and $70 million of other long-term investments, consisting of the OneBeacon Surplus Notes.
During the first quarter of 2017, OneBeacon Ltd. paid $20 million of regular quarterly dividends to its common shareholders. White Mountains received $15 million of these dividends.
As of March 31, 2017, OneBeacon Ltd. and its intermediate holding companies had $44 million of net unrestricted cash, short-term investments and fixed maturity investments and $13 million of common equity securities outside of its regulated and unregulated insurance subsidiaries.

HG Global/BAM:
At March 31,September 30, 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 firstthird quarter of 2017. As of March 31,September 30, 2017, HG Global has accrued $198$223 million of dividends payable to holders of its preferred shares, $192$216 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 to amounts held outside of the collateral trusts pursuant to the first loss reinsurance treaty (“FLRT”) with BAM. As of December 31, 2016,September 30, 2017, HG Re had statutory capital and surplus of $467$677 million, $702 million of which $465 million wasassets held in the collateral trusts pursuant to the FLRT with BAM.BAM and less than $1 million of cash and investments outside the collateral trusts.
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 8.0% to a variable rate equal to the one-year U.S. treasury rate plus 300 basis points, set annually, which is 3.78% for 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 8.0%.  No payment of interest or principal on the BAM is requiredSurplus Notes may be made without the approval of the New York State Department of Financial Services. BAM has stated its intention to seek regulatory approval to pay interest and principal on its surplus notes only when adequateto the extent that its remaining qualified statutory capital (“QSC”) exceeds $500 million and its remaining QSC and other capital resources have accumulated beyond BAM’s initial capitalization and a level that continuescontinue to support its outstanding obligations, business plan and ratings. BAM did not pay any interestits AA stable rating from S&P.

In order to further support BAM’s long-term capital position and business prospects, on August 14, 2017, HG Global contributed the $203 million Series A BAM Surplus Notes duringinto the Supplemental Trust at HG Re, HG Global’s wholly owned reinsurance subsidiary. The Supplemental Trust already held the $300 million Series B BAM Surplus Notes. Assets held in the Supplemental Trust serve to collateralize HG Re’s obligations to BAM under the first quarterloss reinsurance treaty between BAM and HG Re. HG Global and BAM also changed the payment terms of 2017.the Series B Notes, so that payments will reduce principal and accrued interest on a pro rata basis, consistent with the payment terms on the Series A Notes. The terms of the Series B Notes had previously stipulated that payments would first reduce interest owed, then reduce principal owed once all accrued interest had been paid.
HG Global and BAM also made certain changes to the ceding commission arrangements under the reinsurance treaty between HG Re and BAM. These changes will accelerate growth in BAM’s statutory capital but will not impact the net risk premium ceded from BAM to HG Re.

MediaAlpha:
During the first nine months of 2017, MediaAlpha paid $2 million of dividends, $1 million of which was paid to White Mountains. As of September 30, 2017, MediaAlpha had $5 million of net unrestricted cash.

Other Operations:
During the first quarter of 2017, WM Advisors did not pay any dividends to its immediate parent. As of March 31, 2017, WM Advisors had $11 million of net unrestricted cash, short-term investments and fixed maturity investments.
During the first quarternine months of 2017, White Mountains paid a $5 million common share dividend. As of March 31,September 30, 2017, the Company and its intermediate holding companies had $1,507$1,741 million of net unrestricted cash, short-term investments and fixed maturity investments, $402$774 million of common equity securities and $85$81 million of other long-term investments included in its Other Operations segment.

Insurance Float

Insurance float is an important aspectAs of White Mountains’s insurance operations. Insurance float represents funds that an insurance company holds for a limited time. In an insurance operation, float arises because premiums are collected before losses are paid. This interval can extend over many years. During that time, the insurer invests the funds. When the premiums that an insurer 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 operations, organic growth in existing insurance 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 operations, shrinking or runoff of existing insurance 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 operations. However,September 30, 2017, White Mountains seekshas contractual unfunded commitments of $105 million to increase overall profitability, which sometimes reduces insurance float, such as in the Sirius Group sale.fund certain other long-term investments and $10 million to fund a surplus note facility.

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 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 March 31, 2017 and December 31, 2016:
($ 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 quarter of 2017, insurance float decreased by $2 million, primarily due to a $17 million decrease in OneBeacon's insurance float that was mostly offset by a $15 million increase at HG Global and BAM.

Financing

The following table summarizes White Mountains’s capital structure as of March 31,September 30, 2017 and December 31, 2016:
($ in millions) March 31,
2017		 December 31,
2016		 September 30,
2017		 December 31,
2016
WTM Bank Facility $—
 $—
 $—
 $—
OBH Senior Notes, carrying value 273.2
 273.2
OneBeacon Bank Facility —
 —
MediaAlpha Bank Facility, carrying value 11.5
 12.7
 9.4
 —
Previous MediaAlpha Bank Facility, carrying value —
 12.7
Total debt in continuing operations 9.4
 12.7
Debt included in discontinued operations —
 273.2
Total debt 284.7
 285.9
 9.4
 285.9
Non-controlling interest—OneBeacon Ltd. 250.7
 244.6
 —
 244.6
Non-controlling interests—other, excluding mutuals and reciprocals 34.7
 35.8
 28.6
 35.8
Total White Mountains’s common shareholders’ equity 3,625.2
 3,603.3
 3,468.8
 3,582.7
Total capital 4,195.3
 4,169.6
 3,506.8
 4,149.0
Time-value discount on expected future payments on the BAM Surplus Notes (1)
 (161.8) —
HG Global’s unearned premium reserve (1)
 88.4
 —
HG Global’s net deferred acquisition costs (1)
 (19.6) —
Total adjusted capital $3,413.8
 $4,149.0
        
Total debt to total capital 7% 7%
Total debt to total adjusted capital 0.3% 6.9%
(1) Amount reflects White Mountains's ownership in HG Global of 96.9%.


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.

White Mountains has 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 a maturity date of August 14, 2018 (the “WTM Bank Facility”). During the third quarter of 2017, White Mountains borrowed $350 million under the WTM Bank Facility to partially fund a tender offer and subsequently repaid the $350 million after receiving the proceeds from the OneBeacon Transaction. White Mountains borrowed the funds As of March 31,September 30, 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 FacilitiesFacility contain various affirmative, negative and financial covenants that 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,Facility, which would allow lenders to declare any amounts owed under the WTM or OneBeacon Bank FacilitiesFacility to be immediately due and payable. In addition, a default under the WTM or OneBeacon Bank FacilitiesFacility 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, OBH issued $275 million face value of senior unsecured debt through a public offering, at an issue price of 99.9% (the “OBH Senior Notes”). The net proceeds from the issuance of 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 4.60%, payable semi-annually in arrears on May 9 and November 9, until maturity on November 9, 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 OneBeacon Ltd. or OBH must adhere. In addition, a failure by OneBeacon Ltd., 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.
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.
On May 12, 2017, MediaAlpha entered into a secured credit facility (the “MediaAlpha Bank Facility”) with Western Alliance Bank, which has a total commitment of $20 million and has a maturity date of May 12, 2020.  The MediaAlpha Bank Facility replaced MediaAlpha’s previous credit facility (the “Previous MediaAlpha Bank Facility”), which had a total commitment of $20 million. The MediaAlpha Bank Facility consists of a $5 million term loan facility, which had an outstanding balance of $3 million as of September 30, 2017, and a revolving credit facility for $15 million, which had an outstanding balance of $6 million as of September 30, 2017. During the nine months ended September 30, 2017, MediaAlpha borrowed $5.0 million on the term loan and $6.0 million on the revolving loan, under the MediaAlpha Bank Facility. During the nine months ended September 30, 2017, MediaAlpha repaid $13 million under the Previous MediaAlpha Bank 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% on the term loan facility and 0.25% on the revolving credit facility.
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. 

Covenant Compliance
As of March 31,September 30, 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 March 31,September 30, 2017, White Mountains may repurchase an additional 878,130643,130 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. During the third quarter of 2017, White Mountains completed a "modified Dutch auction" tender offer, through which it repurchased 586,732 of its common shares at a purchase price of $875 per share for a total cost of approximately $515 million, including expenses.
The following table presents common shares repurchased by the Company through the first 10 months of 2017 and 2016, as well as the average price per share as a percent of adjusted book value per share. For 2016 periods, the table also presentsWhen applicable, the average price per share to theas a percent of 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 period ended March 31, 2016.significant transactions is also presented.
        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%
        Average price per share as % of
Dates Shares Repurchased Cost (millions) Average price per share 
Adjusted book value per share(1)
 
Adjusted book value per share, including estimated
transaction gains (2)
           
1st quarter 2017 7,699
 $6.4
 $836.05
 105% N/A
2nd quarter 2017 3,184
 2.8
 869.70
 112% 97%
3rd quarter 2017 821,842
 714.7
 869.60
 96% N/A
Year-to-date September 30, 2017 832,725
 723.9
 869.29
 96% N/A
October 2017 —
 —
 —
 N/A
 N/A
Year-to-date October 31, 2017(3)
 832,725
 $723.9
 $869.29
 96% N/A
           
1st quarter 2016 228,688
 $172.7
 $755.36
 108% 95%
2nd quarter 2016 463,276
 374.7
 808.76
 103% 101%
3rd quarter 2016 389,373
 319.4
 820.17
 103% 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
(1) Average price per share is expressed as a percentage of White Mountains's adjusted book value per share as of March 31, 2017 for the first quarter 2017, June 30, 2017 for the second quarter 2017 and September 30, 2017 for all other 2017 periods presented and as of March 31, 2016 for the first quarter 2016, June 30, 2016 for the second quarter 2016 and September 30, 2016 for all other 2016 periods presented periods presented.
(2)For the second quarter 2017, adjusted book value per share includes estimated gain from the OneBeacon transaction. For the first quarter 2016, adjusted book value per share includes estimated gain from the sale of Sirius Group. For the second quarter 2016, adjusted book value per share includes estimated gain from the sale of Tranzact.
(3) Includes 7,69910,993 and 8,022 common shares repurchased by the Company during the first quarterten months of 2017 and 2016 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 quarter 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. The amount of authorization remaining is $75 million as of March 31, 2017.
During the first quarter of 2017 and 2016, OneBeacon also repurchased 67,273 and 64,981 common shares for $1 million in 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 threenine months ended March 31,September 30, 2017 and 2016 follows:
 
Cash flows from continuing operations for the threenine months ended March 31,September 30, 2017 and March 31,September 30, 2016
Net cash used for continuing operations was $56$64 million in the first threenine months of 2017 and $46$175 million in the first threenine months of 2016. The increase in cashCash used for continuing operations was lower in the first nine months of 2017 compared to the first nine months of 2016, primarily drivendue to payments related to the settlement of certain liabilities and transaction costs in connection with the Sirius Group sale in the first nine months of 2016. This decrease in cash used from operations was partially offset by an increase in incentive compensation and employee retirement payments in the first quarternine months of 2017 relative to the first quarternine months of 2016. White Mountains made long-term incentive payments totaling $27$22 million and $9$41 million during the first quarternine months of 2017 and the first nine months of 2016. In 2016, White Mountains made an additional $41 millionDuring the first nine months of long-term incentive payments during the second quarter after the closing of the Sirius Group sale.2017, White Mountains also paid a $21$28 million in cash retirement paymentrelated to itsthe departures of the Company’s former Chairman and CEO during the first quarter of 2017.and former CFO. 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 threenine months ended March 31,September 30, 2017
Financing and Other Capital Activities
During the first quarternine months of 2017, the Company declared and paid a $5 million cash dividend to its common shareholders.
During the first quarternine months of 2017, OneBeacon Ltd. declaredWhite Mountains repurchased and paid $20 millionretired 832,725 of cash dividends to its common shareholders. White Mountains received a total of $15shares for $724 million, of these dividends.which included 10,993 for $9 million under employee benefit plans for statutory withholding tax payments.
During the first quarternine months of 2017, White Mountains borrowed and repaid $350 million under the WTM Bank Facility.
During the first nine months of 2017, BAM received $10$26 million in surplus contributions from its members.
During the first quarternine months of 2017, MediaAlpha paid $0.7$2 million of dividends, of which $0.4$1 million was paid to White Mountains.
During the first quarternine months of 2017, MediaAlpha borrowed $11 million and repaid $1$2 million ofunder the term loan portion ofMediaAlpha Bank Facility and repaid $13 million under the Previous MediaAlpha Bank Facility.
During the first quarternine months of 2017, WM Life Re returned $1Wobi borrowed ILS 43 million (approximately $12 million) from White Mountains under an internal credit facility.
During the first nine months of 2017, White Mountains received $45 million of capital todividends from OneBeacon.

Acquisitions and Dispositions
On August 1, 2017, White Mountains.Mountains purchased 37,409 newly-issued preferred shares of Buzzmove for GBP 4 million (approximately $5 million based upon the foreign exchange spot rate at the date of acquisition) and 5,808 common shares from the company founders for GBP $0.5 million (approximately $0.7 million based upon the foreign exchange spot rate at the date of acquisition).
On September 28, 2017, OneBeacon closed its definitive merger agreement with Intact and White Mountains received proceeds of $1,299 million, or $18.10 per OneBeacon common share.

Cash flows from investing and financing activities for the threenine months ended March 31,September 30, 2016
Financing and Other Capital Activities
During the first quarternine months of 2016, the Company declared and paid a $5 million cash dividend to its common shareholders.
During the first quarternine months of 2016, the CompanyWhite Mountains repurchased and retired 228,6881,081,337 of its common shares for $173$867 million, which included 8,022 common shares for $6 million that was a non-cash repurchase under employee benefit plans.plans for statutory withholding tax payments.
During the first quarternine months of 2016, White Mountains borrowed a total of $100$350 million and repaid a total of $400 million under the WTM Bank Facility.
During the first quarter of 2016, 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 quarternine months 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 quarternine months of 2016, BAM received $7$28 million in surplus contributions from its members.
During the first quarternine months 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 borrowed $3 million under the revolving loan portion of thePrevious MediaAlpha Bank Facility.
During the first quarternine months of 2016, White Mountains contributed $15 million to WM Advisors.
During the first nine months of 2016, White Mountains received $45 million of dividends from OneBeacon.

Acquisitions and Dispositions
InOn 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, White Mountains purchased NIS 16 million (approximately $4 million based upon the foreign exchange spot rate at the date of acquisition) of convertible preferred shares of Wobi, increasing its ownership share to 96.5% 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 based upon the foreign exchange spot rate at the date of acquisition) and 54,172 shares of newly issued convertible preferred shares for GBP 2 million (approximately $3 million based upon the foreign exchange spot rate at the date of acquisition), representing a 70.9% ownership share of Buzzmove on a fully converted basis.



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;portfolio, derivative instruments, both exchange traded and over the counter instruments;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 March 31,September 30, 2017, approximately 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,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 compriseinclude fixed maturity securitiesinvestments, which have been disaggregated into classes, including debt securities issued by corporations, municipal obligations, mortgage and asset-backed securities, municipal obligations, and foreign government, agency and provisional obligations and preferred stock.provincial obligations. Investments valued using Level 2 inputs also include certain passive exchange traded funds (“ETFs”) that track U.S. stock indices such as the S&P 500 but are traded on foreign exchanges, which management values using the fund 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. 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 are based upon unobservable inputs and 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 Transfers between levels have occurredare 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 used by White Mountains uses have indicated that if nothey will only provide prices where observable inputs are available for a security, they willavailable. In circumstances where quoted market prices are unavailable or are not provide a price.

In those circumstances,considered reasonable, White Mountains estimates the fair value using industry standard pricing methodologies and observable inputs such as benchmark yields, reported trades, broker dealerbroker-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 performs proceduresMountains’s process to validateassess the reasonableness of the market prices obtained from the outside pricing sources. Such procedures, which coversources covers substantially all of its fixed maturity investments include,and includes, but areis 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 alternativealternate 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$1.0 million from the expected price based on these assessment 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 dodoes 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. For more detail on the techniques and inputs specific to asset classes within White Mountains’s fixed maturity investments, see Note 3 — “Investment Securities.”
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 valuesvalue measurements for its other long-term investments, including obtaining and reviewing periodic and audited annual financial statements of such securitieshedge 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 Level 3 measurements.unobservable. The fair value of White Mountains’s investments in hedge funds and private equity funds has generally been determined using the fund manager’s NAV.


NON-GAAP FINANCIAL MEASURES
 
This report includes twosix non-GAAP financial measures (i) adjusted book value per share, (ii) percentage change in adjusted book value per share for the third quarter of 2017, which includes the estimated gain from the OneBeacon Transaction as if it had closed on June 30, 2017, (iii) adjusted capital, (iv) return on common equity securities and other long-term investments including high-yield fixed maturity investments, (v) return on fixed maturity investments excluding high-yield fixed maturity investments and (vi) earnings before interest, taxes, depreciation and amortization ("EBITDA"), that have been reconciled tofrom their most comparable GAAP financial measures.

Adjusted book value per share is a non-GAAP financial measure, which is derived by adjusting the GAAP book value per share denominatornumerator (i) to include a discount for the time value of money arising from the expected timing of cash payments of principal and interest on the BAM Surplus Notes and (ii) to add back the unearned premium reserve, net of deferred acquisition costs, at HG Global. In addition, the number of common shares outstanding used in the calculation of adjusted book value per share are adjusted to exclude unearned restricted common shares, the compensation cost of which, at the date of calculation, has yet to be amortized. In addition, theThe calculation of adjusted book value per share also includes the dilutive effects of outstanding non-qualified options for periods prior to January 20, 2017, the expiration date of the non-qualified options.

Beginning in the second quarter of 2017, in its calculation of adjusted book value per share, White Mountains has included a discount for the time value of money arising from the expected timing of cash payments of principal and interest on the BAM Surplus Notes. Under GAAP, White Mountains is required to carry the BAM Surplus Notes, including accrued interest, at nominal value with no consideration for time value of money. Based on a debt service model that forecasts operating results for BAM through maturity of the surplus notes, the present value of the BAM Surplus Notes, including accrued interest, is estimated to be $172 million and $167 million less than the nominal GAAP carrying values as of June 30, 2017 and September 30, 2017. White Mountains has also included the value of HG Global’s unearned premium reserve net of deferred acquisition costs. White Mountains believes these adjustments are useful to management and investors in analyzing the intrinsic value of HG Global, including the intrinsic value of the surplus notes and HG Global’s reinsurance subsidiary’s (HG Re’s) in-force business. The reconciliation of GAAP book value per share to adjusted book value per share is included on page 46.53.

The growth in adjusted book value per share included on page 53 reflects the estimated gain from the OneBeacon Transaction as if it had been calculated and realized on June 30, 2017. A reconciliation from GAAP to the reported percentage is as follows:
  
As of
September 30, 2017
 
As of
June 30, 2017
 Growth %
GAAP book value per share $925.04
 $791.61
 16.9%
Estimated gain from OneBeacon Transaction as of June 30, 2017 —
 116.00
  
GAAP book value per share including the estimated gain from the
 OneBeacon Transaction as of June 30, 2017
 925.04
 907.61
 1.9%
Adjustments to book value per share (see reconciliation on page 53) (19.32) (17.84)  
Adjusted book value per share including the estimated
     gain from the OneBeacon Transaction as of June 30, 2017
 $905.72
 $889.77
 1.8%

Total capital at White Mountains is comprised of White Mountains’s common shareholders’ equity, debt and non-controlling interests other than non-controlling interests attributable to mutuals and reciprocals. Total adjusted capital is a non-GAAP financial measure, which is derived by adjusting total capital (i) to include a discount for the time value of money arising from the expected timing of cash payments of principal and interest on the BAM Surplus Notes and (ii) to add back the unearned premium reserve, net of deferred acquisition costs, at HG Global. The reconciliation of total capital to total adjusted capital is included on page 70.


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-"“B-” and “BB+” inclusive by Standard and Poor'sS&P or similar ratings from other rating agencies. Given the risk profile of these investments, White Mountains has includedthe returns on high-yield fixed maturity investment returnsinvestments have been included with the returns on common equity securities and other long-term investments and excluded from the returns on fixed income investments. A reconciliation of theseGAAP returns to the reported returns are as follows:

 September 30, 2017
 Three Months Ended Nine Months Ended
 March 31, 2017 GAAP return 
Impact of high-yield fixed maturity investments (1)
 Reported return GAAP return 
Impact of high-yield fixed maturity investments (1)
 Reported return
Common equity securities and other long-term investment returns GAAP return 
Include: Impact of high-yield fixed maturity investments (1)(2)
 Reported return 2.6
% (0.2)% 2.4
% 9.0
% (0.4)% 8.6
%
      
Quarter-to-date 4.2
% (0.5)% 3.7
%
Fixed income investment returns 1.0
% (0.1)% 0.9
% 3.0
% (0.3)% 2.7
%
(1) High-yield fixed maturity investments returned 2.2%1.7% and 7.1% for the third quarter and first quarternine months of 2017.
(2) The impact of excluding high-yield fixed maturity investments from
In the GAAP fixed maturity investment returns was insignificant in the firstsecond quarter of 2017.2017, MediaAlpha became a reportable segment, and White Mountains has included MediaAlpha’s EBITDA calculation as a non-GAAP financial measure. EBITDA is defined as net income (loss) excluding interest expense on debt, income tax benefit (expense), depreciation and amortization. White Mountains believes that this non-GAAP financial measure is useful to management and investors in analyzing MediaAlpha’s economic performance without the effects of interest rates, levels of debt, effective tax rates, depreciation and amortization resulting from purchase accounting. In addition, White Mountains believes that investors use EBITDA as a supplemental measurement to evaluate the overall operating performance of companies within the same industry. See page 63 for the reconciliation of MediaAlpha’s GAAP net income to EBITDA.

CRITICAL ACCOUNTING ESTIMATES
 
As described in White Mountains’s Annual Report on Form 10-K for the year ended December 31, 2016 under “CRITICAL ACCOUNTING ESTIMATES”, the determination of the recoverability of the BAM Surplus Notes is based on a debt service model that forecasts operating results for BAM through maturity of the BAM Surplus Notes. In its most recent update of this model, White Mountains has (1) reflected the impact of the changes to the terms of the BAM Surplus Notes on expected future payments and (2) made more conservative assumptions about BAM’s future operating results, specifically forecasted increases in annual par insured volume and total premium rates.  As a result, although the model continues to project that BAM can begin making payments on the BAM Surplus Notes in 2019, White Mountains now projects that the BAM Surplus Notes will be fully repaid approximately eight years prior to final maturity, which is seven years later than projected under the previous forecast.
Refer to the Company’s 2016 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 2016 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 2016 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 March 31,September 30, 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'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 U.S. District Court for the Southern District of New 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 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.S. Second Circuit Court of Appeals affirmed the dismissal of the 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 U.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 SDNY and was stayed pending the motion to dismiss in the Noteholder Actions. An omnibus motion to dismiss the shareholder defendants in the Committee Action was filed in May 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 March 31, 2017, as the amount of loss, if any, cannot be reasonably estimated.None.


Item 1A. Risk Factors.
 
There have been no material changes to any of the risk factors previously disclosed in the Registrant’s 2016 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)
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
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, 2017 235,000
 $850.00
 235,000
 643,130
August 1-August 31, 2017 —
 $—
 —
 643,130
September 1-September 30, 2017 586,842
 $877.44
 —
 643,130
Total 821,842
 $869.60
 235,000
 643,130
(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.
 

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

None.
 
Item 5.
Other Information.
 
None.
 

Item 6.
Exhibits.
(a) Exhibit number   Name
  3
10 —
 
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 theSecond Amended and Restated Investment Management Agreement, dated as of December 23, 2014September 28, 2017, 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—
(incorporated by reference herein to Exhibit 10.1 of the Company's Current Report on 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. *8-K dated September 28, 2017)
  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 —
 The following financial information from White Mountains’s Quarterly Report on Form 10-Q for the quarter ended March 31,September 30, 2017 formatted in XBRL: (i) Consolidated Balance Sheets, March 31,September 30, 2017 and December 31, 2016; (ii) Consolidated Statements of Operations and Comprehensive Income, Three and Nine Months Ended March 31,September 30, 2017 and 2016; (iii) Consolidated Statements of Changes in Equity, ThreeNine Months Ended March 31,September 30, 2017 and 2016; (iv) Consolidated Statements of Cash Flows, ThreeNine Months Ended March 31,September 30, 2017 and 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 119 — “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:May 2,November 8, 2017  By: /s/ J. Brian Palmer
    J. Brian Palmer
    Managing Director and Chief Accounting Officer

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