UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 10-Q
ýQUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the quarterly period ended SeptemberJune 30, 20172018
or
¨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 001-12307
ZIONS BANCORPORATION
(Exact name of registrant as specified in its charter)
UTAH87-0227400
(State or other jurisdiction of
incorporation or organization)
(I.R.S. Employer
Identification No.)
  
One South Main, 15th Floor
Salt Lake City, Utah
84133
(Address of principal executive offices)(Zip Code)
Registrant’s telephone number, including area code: (801) 844-7637
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 (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.    Yes  ý    No  ¨
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 (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).    Yes  ý    No  ¨
Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company. See the definitions of “large accelerated filer,” “accelerated filer” and “smaller reporting company” in Rule 12b-2 of the Exchange Act.
Large accelerated filerýAccelerated filer¨
    
Non-accelerated filer¨Smaller reporting company¨
    
  Emerging growth company¨
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. ¨
Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).    Yes  ¨    No  ý
Indicate the number of shares outstanding of each of the issuer’s classes of common stock, as of the latest practicable date.
Common Stock, without par value, outstanding at OctoberJuly 31, 20172018199,743,776194,402,811 shares

ZIONS BANCORPORATION AND SUBSIDIARIES
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PART I.FINANCIAL INFORMATION
ITEM 2.MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS
FORWARD-LOOKING INFORMATION
This Quarterly Report on Form 10-Q includes forward-looking statements within the meaning of Section 21E of the Securities Exchange Act of 1934, as amended, or the Exchange Act. Statements in this Quarterly Report on Form 10-Q that are based on other than historical data are forward-looking within the meaning of the Private Securities Litigation Reform Act of 1995. Forward-looking statements provide current expectations or forecasts of future events and include, among others:
statements with respect to the beliefs, plans, objectives, goals, targets, commitments, designs, guidelines, expectations, anticipations, and future financial condition, results of operations and performance of Zions Bancorporation (“the Parent”) and its subsidiaries (collectively “the Company,” “Zions,” “we,” “our,” “us”); and
statements preceded by, followed by, or that include the words “may,” “could,” “should,” “would,” “believe,” “anticipate,” “estimate,” “expect,” “intend,” “target,” “commit,” “design,” “plan,” “projects,” orand the negative thereof and similar words and expressions.
These forward-looking statements are not guarantees of future performance, nor should they be relied upon as representing management’s views as of any subsequent date. Forward-looking statements involve significant risksby their nature address matters that are, to different degrees, uncertain, such as statements about future financial and uncertaintiesoperating results, the potential timing or consummation of the proposed merger of Zions Bancorporation with and actualinto its wholly-owned bank subsidiary, ZB, National Association, (“ZB, N.A.” or the “Bank”) (the “restructuring”), receipt of the final report from the Financial Stability Oversight Council (“FSOC”), actions to be taken by Zions or receipt of any required approvals, or the anticipated benefits thereof, including without limitation, future financial and operating results. Actual results may differ materially from those presented, either expressed or implied, including, but not limited to, those presented in Management’s Discussion and Analysis. FactorsImportant risk factors that mightmay cause such material differences include, but are not limited to:
the Company’s ability to successfully execute its business plans, manage its risks, and achieve its objectives, including its operating leverage goals and its capital plan;
risks and uncertainties related to the ability to obtain shareholder and regulatory approvals, or the possibility that such approvals may be delayed;
the ability of Zions Bancorporation to achieve anticipated benefits from the restructuring and efficiency initiatives;from regulatory approvals;
legislative, regulatory and economic developments that may diminish or eliminate the anticipated benefits of the restructuring;
changes in local, national and international political and economic conditions, including without limitation the political and economic effects of the economic and fiscal imbalancesimbalance in the United States (“U.S.”) and other countries, potential or actual downgrades in ratings of sovereign debt issued by the United States and other countries, and other major developments, including wars, military actions, and terrorist attacks;
changes in financial and commodity market prices and conditions, either internationally, nationally or locally in areas in which the Company conducts its operations, including without limitation rates of business formation and growth, commercial and residential real estate development, real estate prices, and oil and gas-related commodity prices;
changes in markets for equity, fixed income, commercial paper and other securities, commodities, including availability, market liquidity levels, and pricing;
any impairment of our goodwill or other intangibles, or any adjustment of valuation allowances on our deferred tax assets due to adverse changes in the economic environment, declining operations of the reporting unit, or a

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change to the corporate statutory tax rate or other similar changes if and as implemented by local and national governments, or other factors;
changes in interest rates, the quality and composition of the loan and securities portfolios, demand for loan products, deposit flows and competition;
the impact of acquisitions, dispositions, and integration of acquired businesses;corporate restructurings;
increases in the levels of losses, customer bankruptcies, bank failures, claims, and assessments;
changes in fiscal, monetary, regulatory, trade and tax policies and laws, and regulatory assessments and fees, including policies of the U.S.United States Department of Treasury, the OCC,Office of the Comptroller of the Currency (“OCC”), the Board of Governors of the Federal Reserve Board System, the FDIC,Federal Deposit Insurance Corporation (“FDIC”), the SEC,Securities and Exchange Commission, and the CFPB; Consumer Financial Protection Bureau (“CFPB”);
the impact of executive compensation rules under the Dodd-Frank Wall Street Reform and Consumer Protection Act (“Dodd-Frank Act”) and banking regulations, which may impact the ability of the Company and other American financial institutions to retain and recruit executives and other personnel necessary for their businesses and competitiveness;

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the impact of the Dodd-Frank Act and Basel III, and rules and regulations thereunder, on our required regulatory capital and liquidity levels, governmental assessments on us (including, but not limited to, the Federal Reserve reviews of our annual capital plan), the scope of business activities in which we may engage, the manner in which we engage in such activities, the fees we may charge for certain products and services, and other matters affected by the Dodd-Frank Act and these international standards;
continuing consolidation in the financial services industry;
new legal claims against the Company, including litigation, arbitration and proceedings brought by governmental or self-regulatory agencies, or changes in existing legal matters;
success in gaining regulatory approvals, when required;
changes in consumer spending and savings habits;
increased competitive challenges and expanding product and pricing pressures among financial institutions;
inflation and deflation;
technological changes and the Company’s implementation of new technologies;
the Company’s ability to develop and maintain secure and reliable information technology systems;
legislation or regulatory changes which adversely affect the Company’s operations or business;
the Company’s ability to comply with applicable laws and regulations;
changes in accounting policies or procedures as may be required by the FASBFinancial Accounting Standards Board or regulatory agencies; and
costs of deposit insurance and changes with respect to FDIC insurance coverage levels.
Except to the extent required by law, the Company specifically disclaims any obligation to update any factors or to publicly announce the result of revisions to any of the forward-looking statements included herein to reflect future events or developments.
GLOSSARY OF ACRONYMS
ACLAllowance for Credit LossesCSVBHCCash Surrender ValueBank Holding Company
AFSAvailable-for-SaleDFASTbpsDodd-Frank Act Stress Testbasis points
ALCOAsset/Liability CommitteeDodd-Frank ActDodd-Frank Wall Street Reform and Consumer Protection Act
ALLLAllowance for Loan and Lease LossesDTADeferred Tax Asset
AmegyAmegy Bank, a division of ZB, N.A.EaREarnings at Risk
AOCIAccumulated Other Comprehensive IncomeEITFEmerging Issues Task Force
ASCAccounting Standards CodificationERMEnterprise Risk Management
ASUAccounting Standards UpdateERMCEnterprise Risk Management Committee
BHCBank Holding CompanyEVEEconomic Value of Equity at Risk
BOLIBank-Owned Life InsuranceFAMCFederal Agricultural Mortgage Corporation, or “Farmer Mac”
bpsbasis pointsFASBFinancial Accounting Standards Board
CB&TCalifornia Bank & Trust, a division of ZB, N.A.
FDICALLLFederal Deposit Insurance CorporationAllowance for Loan and Lease Losses
CCARComprehensive Capital Analysis and ReviewFDICIAFederal Deposit Insurance Corporation Improvement Act
CDAmegyCertificateAmegy Bank, a division of DepositZB, N.A.FHLBFederal Home Loan Bank
CET1Common Equity Tier 1 (Basel III)FHLMCFederal Home Loan Mortgage Corporation, or “Freddie Mac”
CFPBConsumer Financial Protection Bureau
FRBAOCIFederal Reserve BoardAccumulated Other Comprehensive Income
CLTVCombined Loan-to-Value RatioFTPFunds Transfer Pricing
CMCASCCapital Management CommitteeGAAPGenerally Accepted Accounting PrinciplesStandards Codification
COSOCommittee of Sponsoring Organizations of the Treadway CommissionHCRHorizontal Capital Review
CRACommunity Reinvestment ActHECLHome Equity Credit Line
CRECommercial Real Estate
HQLAASUHigh-Quality Liquid AssetsAccounting Standards UpdateDFASTDodd-Frank Act Stress Test
CSAATMCredit Support AnnexAutomated Teller MachineHTMDodd-Frank ActHeld-to-MaturityDodd-Frank Wall Street Reform and Consumer Protection Act

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IFRSDTAInternational Financial Reporting StandardsDeferred Tax AssetOCIOther Comprehensive Income
EaREarnings at RiskOREOOther Real Estate Owned
ERMEnterprise Risk ManagementOTTIOther-Than-Temporary Impairment
EVEEconomic Value of Equity at RiskPAGAPrivate Attorney General Act
FAMCFederal Agricultural Mortgage Corporation, or “Farmer Mac”ParentZions Bancorporation
FDICFederal Deposit Insurance CorporationPEIPrivate Equity Investment
FTPFunds Transfer PricingPPNRPre-provision Net Revenue
FHLBFederal Home Loan BankROCRisk Oversight Committee
FRBFederal Reserve BoardRULCReserve for Unfunded Lending Commitments
GAAPGenerally Accepted Accounting PrinciplesS&PStandard and Poor's
HECLHome Equity Credit LineSBASmall Business Administration
HTMHeld-to-MaturitySBICSmall Business Investment Company
IMGInternational Manufacturing GroupTCBWThe Commerce Bank of Washington, a division of ZB, N.A.
LCRLiquidity Coverage RatioPPNRTDRPre-provision Net RevenueTroubled Debt Restructuring
LIBORLondon Interbank Offered RateROCTier 1Risk Oversight CommitteeCommon Equity Tier 1 (Basel III)
MD&AMunicipalitiesManagement’s DiscussionState and AnalysisLocal GovernmentsRSUTopic 606Restricted Stock Unit
NAVNet Asset ValueRULCReserve for Unfunded Lending CommitmentsASC Topic 606, “Revenue from Contracts with Customers”
NBAZNational Bank of Arizona, a division of ZB, N.A.S&PU.S.Standard and Poor'sUnited States
NIMNet Interest MarginSBAVectraSmall Business AdministrationVectra Bank Colorado, a division of ZB, N.A.
NMNot MeaningfulSBICZB, N.A.Small Business Investment Company
NREZB, National Real EstateSECSecurities and Exchange CommissionAssociation
NSBNevada State Bank, a division of ZB, N.A.SNCZions BankShared National Credit
NSFRNet Stable Funding RatioTCBOThe CommerceZions Bank, of Oregon, a division of ZB, N.A.
OCCOffice of the Comptroller of the CurrencyTCBWThe Commerce Bank of Washington, a division of ZB, N.A.
OCIOther Comprehensive IncomeTDRTroubled Debt Restructuring
OREOOther Real Estate OwnedVectraVectra Bank Colorado, a division of ZB, N.A.
OTTIOther-Than-Temporary ImpairmentZB, N.A.ZB, National Association
ParentZions BancorporationZions BankZions Bank, a division of ZB, N.A.
PCIPurchased Credit-ImpairedZMSCZions Management Services Company
CRITICAL ACCOUNTING POLICIES AND SIGNIFICANT ESTIMATES
The Company has made no significant changes in its critical accounting policies and significant estimates from those disclosed in its 20162017 Annual Report on Form 10-K.
GAAP to NON-GAAP RECONCILIATIONS
This Form 10-Q presents non-GAAP financial measures, in addition to GAAPgenerally accepted accounting principles (“GAAP”) financial measures, to provide investors with additional information. The adjustments to reconcile from the applicable GAAP financial measures to the non-GAAP financial measures are presented in the following schedules. The Company considers these adjustments to be relevant to ongoing operating results and provide a meaningful base for period-to-period and company-to-company comparisons. These non-GAAP financial measures are used by management to assess the performance and financial position of the Company and for presentations of Company performance to investors. The Company further believes that presenting these non-GAAP financial measures will permit investors to assess the performance of the Company on the same basis as that applied by management.
Non-GAAP financial measures have inherent limitations, and are not required to be uniformly applied by individual entities. Although non-GAAP financial measures are frequently used by stakeholders to evaluate a company, they have limitations as an analytical tool and should not be considered in isolation or as a substitute for analysis of results reported under GAAP.
The following are the non-GAAP financial measures presented in this Form 10-Q and a discussion of why management uses these non-GAAP measures:
Return on Average Tangible Common Equity – this schedule also includes “net earnings applicable to common shareholders, excluding the effects of the adjustments,adjustment, net of tax” and “average tangible common equity.” Return on average tangible common equity is a non-GAAP financial measure that management believes provides useful information about the Company’s use of shareholders’ equity. Management believes the use of ratios that

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utilize tangible equity provides additional useful information because they present measures of those assets that can generate income.
Tangible Equity Ratio, Tangible Common Equity Ratio, and Tangible Book Value per Common Share – this schedule also includes “tangible equity,” “tangible common equity,” and “tangible assets.” Tangible equity ratio, tangible common equity ratio, and tangible book value per common share are non-GAAP financial measures that management believes provides additional useful information about the levels of tangible assets and tangible equity between each other and in relation to outstanding shares of common stock. Management believes the use

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of ratios that utilize tangible equity provides additional useful information because they present measures of those assets that can generate income.
Efficiency Ratio – this schedule also includes “adjusted noninterest expense,” “taxable-equivalent net interest income,” “adjusted taxable-equivalent revenue,” and “adjusted pre-provision net revenue (“PPNR”).” The methodology of determining the efficiency ratio may differ among companies. Management makes adjustments to exclude certain items as identified in the subsequent schedule which it believes allows for more consistent comparability among periods. Management believes the efficiency ratio provides useful information regarding the cost of generating revenue. Adjusted noninterest expense provides a measure as to how well the Company is managing its expenses, and adjusted PPNR enables management and others to assess the Company’s ability to generate capital to cover credit losses through a credit cycle. Taxable-equivalent net interest income allows management to assess the comparability of revenue arising from both taxable and tax-exempt sources. The efficiency ratio and adjusted noninterest expense are the key metrics to which the Company announced it would hold itself accountable in its June 1, 2015 efficiency initiative, and to which executive compensation is tied.
RETURN ON AVERAGE TANGIBLE COMMON EQUITY (NON-GAAP)
  Three Months Ended
(Dollar amounts in millions) September 30,
2017
 June 30,
2017
 March 31,
2017
 September 30,
2016
         
Net earnings applicable to common shareholders (GAAP) $152
 $154
 $129
 $117
Adjustment, net of tax:        
Amortization of core deposit and other intangibles 1
 1
 1
 1
Net earnings applicable to common shareholders, excluding the effects of the adjustment, net of tax (non-GAAP)(a)$153
 $155
 $130
 $118
Average common equity (GAAP) $7,230
 $7,143
 $6,996
 $6,986
Average goodwill (1,014) (1,014) (1,014) (1,014)
Average core deposit and other intangibles (4) (6) (8) (11)
Average tangible common equity (non-GAAP)(b)$6,212
 $6,123
 $5,974
 $5,961
Number of days in quarter(c)92
 91
 90
 92
Number of days in year(d)365
 365
 365
 366
Return on average tangible common equity (non-GAAP)(a/b/c)*d9.8% 10.2% 8.8% 7.9%
TANGIBLE EQUITY (NON-GAAP) AND TANGIBLE COMMON EQUITY (NON-GAAP)
(Dollar amounts in millions, except per share amounts) September 30,
2017
 June 30,
2017
 March 31,
2017
 September 30,
2016
         
Total shareholders’ equity (GAAP) $7,761
 $7,749
 $7,730
 $7,679
Goodwill (1,014) (1,014) (1,014) (1,014)
Core deposit and other intangibles (3) (5) (7) (10)
Tangible equity (non-GAAP)(a)6,744
 6,730
 6,709
 6,655
Preferred stock (566) (566) (710) (710)
Tangible common equity (non-GAAP)(b)$6,178
 $6,164
 $5,999
 $5,945
Total assets (GAAP) $65,564
 $65,446
 $65,463
 $61,039
Goodwill (1,014) (1,014) (1,014) (1,014)
Core deposit and other intangibles (3) (5) (7) (10)
Tangible assets (non-GAAP)(c)$64,547
 $64,427
 $64,442
 $60,015
Common shares outstanding (thousands)(d)199,712
 202,131
 202,595
 203,850
Tangible equity ratio (non-GAAP)(a/c)10.45% 10.45% 10.41% 11.09%
Tangible common equity ratio (non-GAAP)(b/c)9.57% 9.57% 9.31% 9.91%
Tangible book value per common share (non-GAAP)(b/d)$30.93
 $30.50
 $29.61
 $29.16
  Three Months Ended
(Dollar amounts in millions) June 30,
2018
 March 31,
2018
 December 31,
2017
 June 30,
2017
         
Net earnings applicable to common shareholders (GAAP) $187
 $231
 $114
 $154
Adjustment, net of tax:        
Amortization of core deposit and other intangibles 
 
 1
 1
Net earnings applicable to common shareholders, excluding the effects of the adjustment, net of tax (non-GAAP)(a)$187
 $231
 $115
 $155
Average common equity (GAAP) $7,072
 $7,061
 $7,220
 $7,143
Average goodwill and intangibles (1,016) (1,016) (1,017) (1,020)
Average tangible common equity (non-GAAP)(b)$6,056
 $6,045
 $6,203
 $6,123
Number of days in quarter(c)91
 90
 92
 91
Number of days in year(d)365
 365
 365
 365
Return on average tangible common equity (non-GAAP)(a/b/c)*d12.4% 15.5% 7.4% 10.2%

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TANGIBLE EQUITY (NON-GAAP) AND TANGIBLE COMMON EQUITY (NON-GAAP)
(Dollar amounts in millions, except per share amounts) June 30,
2018
 March 31,
2018
 December 31,
2017
 June 30,
2017
         
Total shareholders’ equity (GAAP) $7,621
 $7,644
 $7,679
 $7,749
Goodwill and intangible (1,015) (1,016) (1,016) (1,019)
Tangible equity (non-GAAP)(a)6,606
 6,628
 6,663
 6,730
Preferred stock (566) (566) (566) (566)
Tangible common equity (non-GAAP)(b)$6,040
 $6,062
 $6,097
 $6,164
Total assets (GAAP) $66,457
 $66,481
 $66,288
 $65,446
Goodwill and intangible (1,015) (1,016) (1,016) (1,019)
Tangible assets (non-GAAP)(c)$65,442
 $65,465
 $65,272
 $64,427
Common shares outstanding (thousands)(d)195,392
 197,050
 197,532
 202,131
Tangible equity ratio (non-GAAP)(a/c)10.09% 10.12% 10.21% 10.45%
Tangible common equity ratio (non-GAAP)(b/c)9.23% 9.26% 9.34% 9.57%
Tangible book value per common share (non-GAAP)(b/d)$30.91
 $30.76
 $30.87
 $30.50
EFFICIENCY RATIO (NON-GAAP) AND ADJUSTED PRE-PROVISION NET REVENUE (NON-GAAP)
(Dollar amounts in millions) Three Months Ended Nine Months Ended Year Ended Three Months Ended Six Months Ended Year Ended
September 30,
2017
 June 30,
2017
 September 30,
2016
 September 30,
2017
 September 30,
2016
 December 31,
2016
June 30,
2018
 March 31,
2018
 June 30,
2017
 June 30,
2018
 June 30,
2017
 December 31,
2017
                        
Noninterest expense (GAAP)(a)$413
 $405
 $403
 $1,232
 $1,181
 $1,585
(a)$428
 $412
 $405
 $840
 $819
 $1,649
Adjustments:                        
Severance costs 1
 
 
 6
 4
 5
 1
 
 
 (1) 5
 7
Other real estate expense, net (1) 
 
 (1) (2) (2) 
 
 
 1
 
 (1)
Provision for unfunded lending commitments (4) 3
 (3) (6) (13) (10) 7
 (7) 3
 
 (2) (7)
Amortization of core deposit and other intangibles 2
 2
 2
 5
 6
 8
 
 
 2
 1
 3
 6
Restructuring costs 1
 1
 
 3
 1
 5
 
 
 1
 
 2
 4
Total adjustments(b)(1) 6
 (1) 7
 (4) 6
(b)8
 (7) 6
 1
 8
 9
Adjusted noninterest expense (non-GAAP)
(a-b)=
(c)
$414
 $399
 $404
 $1,225
 $1,185
 $1,579
(a-b)=
(c)
$420
 $419
 $399
 $839
 $811
 $1,640
Net interest income (GAAP)(d)$522
 $528
 $469
 $1,539
 $1,386
 $1,867
(d)$548
 $542
 $528
 $1,090
 $1,017
 $2,065
Fully taxable-equivalent adjustments 9
 9

7
 26
 19
 26
 5
 5

9
 10
 17
 35
Taxable-equivalent net interest income (non-GAAP)1
(d+e)=f531
 537
 476
 1,565
 1,405
 1,893
(d+e)=f553
 547
 537
 1,100
 1,034
 2,100
Noninterest income (GAAP)g139
 132
 145
 404
 388
 515
g138
 138
 132
 276
 264
 544
Combined income (non-GAAP)
(f+g)=
(h)
670
 669
 621
 1,969
 1,793
 2,408
(f+g)=
(h)
691
 685
 669
 1,376
 1,298
 2,644
Adjustments:                        
Fair value and nonhedge derivative income (loss) 
 
 
 (1) (5) 2
 
 1
 
 2
 (1) (2)
Securities gains, net 5
 2
 8
 13
 11
 7
 1
 
 2
 1
 7
 14
Total adjustments(i)5
 2
 8
 12
 6
 9
(i)1
 1
 2
 3
 6
 12
Adjusted taxable-equivalent revenue (non-GAAP)
(h-i)=
(j)
$665
 $667
 $613
 $1,957
 $1,787
 $2,399
(h-i)=
(j)
$690
 $684
 $667
 $1,373
 $1,292
 $2,632
Pre-provision net revenue(h)-(a)$257
 $264
 $218
 $737
 $612
 $823
(h)-(a)$263
 $273
 $264
 $536
 $479
 $995
Adjusted PPNR (non-GAAP)(j-c)251
 268
 209
 732
 602
 820
(j-c)270
 265
 268
 534
 481
 992
Efficiency ratio (non-GAAP)(c/j)62.3% 59.8% 65.9% 62.6% 66.3% 65.8%(c/j)60.9% 61.3% 59.8% 61.1% 62.8% 62.3%

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ZIONS BANCORPORATION AND SUBSIDIARIES

RESULTS OF OPERATIONS
Executive Summary
NetThe Company reported net earnings applicable to common shareholders for the third quarter of 2017 were $152$187 million, or $0.72$0.89 per diluted common share for the second quarter of 2018, compared with net earnings applicable to common shareholders of $154 million, or $0.73 per diluted common share for the second quarter of 2017, and $117$231 million, or $0.57$1.09 per diluted common share for the thirdfirst quarter of 2016. Interest2018. The financial performance in the second quarter of 2018 reflects strong net interest income, customer-related fee income growth, progress on key initiatives and continued strong credit quality; the effect of $557these factors was tempered by modest linked-quarter loan growth.
Net income in the second quarter of 2018 increased from the second quarter of 2017 primarily due to a $20 million increase in net interest income and a $24 million decrease in income taxes, partially offset by a $23 million increase in noninterest expense. Net income also increased due to moderate noninterest income growth. Net income in the second quarter of 2018 decreased from the first quarter of 2018 primarily due to a negative provision for loan losses of $40 million in the thirdfirst quarter and a $16 million increase in noninterest expense.
Net interest income increased from the second quarter of 2017 improved $66 million overto the same prior year period, mainlysecond quarter of 2018 due to growthincreases in our loans and securities portfolios and short-term rate increasesinterest rates that positively impacted loan yields. Netyields and growth in our lending portfolio, partially offset by an increase in interest margin (“NIM”) was 3.45% inexpense. When comparing the most recent quarter, compared with 3.36% in the thirdsecond quarter of 2016.
Performance Against Previously Announced Initiatives
In June 2015, we announced several initiatives2018 to improve operational and financial performance along with some key financial targets. Our initiatives are designed to improve customer experience, to simplify the corporate structure and operations, and to make the Company a more efficient organization. Following is a brief discussion regarding current performance against these key financial targets.
Achieve an efficiency ratio in the low 60% range for fiscal year 2017. Our efficiency ratio for the thirdsecond quarter of 2017, was 62.3%, a 365 bps improvement over thecustomer-related fees increased by 3%. During this same prior year period efficiency ratio of 65.9%. Our year-

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to-date efficiency ratio of 62.6% is also a large improvement over the same prior year period, which was 66.3%. Improvements in interest income from securitiescomparison, salaries and loans, partially offsetemployee benefits increased by increases in adjusted noninterest expense, resulted in the significant improvement. See “GAAP to Non-GAAP Reconciliations” on page 5 for more information regarding the calculation of the efficiency ratio and why management uses this non-GAAP measure.
Maintain adjusted noninterest expense at less than $1.58 billion in 2016, with a modest increase of 2-3% in 2017. We met our target for fiscal year 2016, keeping adjusted noninterest expense to $1.579 billion. Through September 30, 2017, adjusted noninterest expense was $1.225 billion, compared with $1.185 billion for the same prior year period. In the most recent quarter, we incurred $6$26 million of non-recurring expenses due to Hurricane Harvey’s impact on the Houston area. Despite these additional expenses, our adjusted noninterest expense should increase by 2-3% in 2017.
increased incentive compensation resulting from stronger financial performance and increased salaries from higher headcount and annual merit increases.
Highlights from the ThirdSecond Quarter and First Nine Months of 20172018
Net interest income, which is more than three-quarters of our revenue, was $522improved by $20 million from $528 million in the thirdsecond quarter of 2017, and $469by $6 million from $542 million in the thirdfirst quarter of 2016. This 11.3%2018, to $548 million in the second quarter of 2018. The increase over the samefrom both prior year period isperiods was due to our efforts to change the mix of interest-earning assets from lower-yielding money market investments into higher-yielding investment securities and loans. Netincreases in short-term interest margin was 3.45% in the third quarter of 2017, compared with 3.36% in the third quarter of 2016. Year-to-date net interest income was $1.5 billion in 2017 and $1.4 billion for the same prior year period. The 11.0% increase between the two periods was mainly impacted by growth in our loans and securities portfolios and short-term rate increasesrates that positively impacted loan yields.yields and growth in consumer and commercial loans, partially offset by an increase in interest expense. Net Interest Margin (“NIM”) was 3.56% in both the second and first quarters of 2018 compared with 3.52% in the second quarter of 2017. For more discussion on the changes in net interest income and NIM, including the positive impact of interest income recoveries, see “Net Interest Income” and “Net Interest Margin and Interest Rate Spreads.”
Adjusted PPNR of $251$270 million for the thirdsecond quarter of 2018 was up $2 million, or 1%, from the second quarter of 2017. The prior year period included $16 million of interest income recoveries of at least $1 million per loan, while the current period included only $1 million of such recoveries. Adjusted for these interest income recoveries, the increase in adjusted PPNR would be 7%. The increase in PPNR reflects operating leverage improvement resulting from moderate loan growth and increases in short-term interest rates, partially offset by increased interest expense and noninterest expense from increased salaries and employee benefits. See “Noninterest Expense” for a discussion regarding the increased salary and employee benefits expense. The Company’s efficiency ratio was 60.9% in the second quarter of 2018 compared with 59.8% in the second quarter of 2017 was up $42 million, or 20.1%, fromand 61.3% in the thirdfirst quarter of 2016, primarily as a result of increases in net interest income. Although adjusted noninterest expense also increased over the same period, from $404 million in the third quarter of 2016 to $414 million in the most recent quarter, increases in income more than offset the increase in expense. The higher adjusted PPNR in the third quarter of 2017, compared with the same prior year period, drove an improvement in the Company’s efficiency ratio from 65.9% in the third quarter of 2016 to 62.3% in the current quarter. Year-to-date adjusted PPNR was $732 million in 2017 and $602 million in 2016, representing a 21.6% increase. Increases were driven by similar factors to those previously discussed.2018. See “GAAP to Non-GAAP Reconciliations” on page 5 for more information regarding the calculation of adjusted PPNR.
Our average loan portfolio increased $2.0 billion, or 5%, since the second quarter of 2017. We have seen widespread growth across most products and geographies, with particular strength in municipal, 1-4 family residential and owner-occupied lending. We saw a decline in our commercial real estate (“CRE”) term portfolio, primarily due to payoffs and a decline in originations.
Asset quality forhas continued to improve during the total loan portfolio continues to strengthen. Classified and nonaccrual loans improved as a percentage of outstanding balances by 97 bps and 27 bps, respectively, between the third quarters of 2016 and 2017. In recent quarters, assetpast several quarters. Credit quality in our oil and gas-related portfolio has been substantially weaker than it has been in non-oil and gas-related loans. At the same time, the Company has reduced its oil and gas-related exposure by $253 million since the third quarter of 2016 and oil prices have stabilized since their low point in early 2016. Classified and nonaccrual balances in the oil and gas-related portfolio have decreased since the third quarter of 2016 by 35.8%continues to strengthen and 39.6%, respectively. These improvements have been the drivers of a lower provision for credit losses, which was $1 millionit has remained strong in the current quarter and $16 million inrest of the same prior year period.
Loans have grown $1.6 billion, or 3.8% since the third quarter of 2016, despite targeted declines in certain areas due to portfolio and concentration risk management. Asidelending portfolio. Overall, from declines in our national real estate (“NRE”), oil and gas-related, and commercial real estate (“CRE”) portfolios, this growth has been widespread across most other products, with particular strength in 1-4 family residential, commercial and industrial, and municipal lending.
We continue to increase the return on and of capital. Return on average tangible common equity was 9.8%, up 189 bps from the same prior year period. During the quarter, the Company repurchased 2.5 million shares of common stock under its 2017 capital plan (which spans the timeframe of July 2017 to June 2018). Dividends per common share were $0.12 in the third quarter of 2017, compared with $0.08 for the prior quarter and the same prior year period. In June 2017, we announced the Federal Reserve did not object to the Company’s 2017 capital plan. The plan included stepped quarterly common dividend increases, rising to $0.24 per share by the second quarter of 2017 to the second quarter of 2018, criticized, classified, and nonaccrual loans declined by $488 million, $370 million, and $144 million, respectively.

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We continue to increase the return on- and of- capital. Return on average tangible common equity was 12.4% for the second quarter of 2018, up to220 basis points (“bps”) from the same prior year period. Regarding the return of capital, during the second quarter of 2018, the Company repurchased 2.1 million shares of common stock for $120 million, and has repurchased a total of 9.2 million shares of common stock for $465 million over the last 12 months. Dividends per common share were $0.24 in the second quarter of 2018, compared with $0.08 for the second quarter of 2017. In July 2018, the Company announced that its board of directors declared a regular quarterly dividend of $0.30 per common stock repurchases.share, payable August 23, 2018 to shareholders of record on August 16, 2018. This represents an increase of 150% from the dividend paid in the year ago period, and a 25% increase over the dividend paid in the second quarter of 2018. Additionally, the Board approved a plan to repurchase $185 million of common shares during the third quarter of 2018. See “Capital Management” on page 3933 for more information regarding the 2017Company’s capital plan.
ChallengesOn July 18, 2018, the Company issued a press release announcing that it has been notified of the proposed decision by FSOC to grant its appeal for relief from the designation of Zions or its successor as a systemically important financial institution under the Dodd-Frank Act. Also, it announced that the Company has received approval from the OCC and FDIC to merge its holding company with and into its bank, ZB, N.A. The merger is expected to result in the Third Quarterelimination of duplicative regulatory efforts, leaving the OCC as the Company’s primary federal banking regulator. See “Capital Management” on page 33 for more information regarding the merger.
Areas of focus for 2018
In 2018, we are focused on ongoing initiatives related to Company profitability, including returns on equity. Both our profitability and the First Nine Months of 2017
Noninterest expense increased to $413 million from $403 million for the same prior year period, representing a 2.5% increase, which is generally in line with announced forecasts. Incentive compensation expense was higher this quarter thanreturns on equity have improved in the same prior year period. These increases were partially offset by a decline in other noninterest expense primarily due to legal accruals that occurred in the thirdsecond quarter of 2016. Adjusted noninterest expense, which excludes severance and some other items as explained in the “GAAP to Non-GAAP Reconciliations” section on page 5, increased 2.5% over the same period. We expect to achieve our goal of limiting adjusted noninterest expense growth to 2-3% in 20172018 when compared with 2016.
Further impacting noninterest expense during the thirdsecond quarter of 2017, but declined slightly when compared with the first quarter of 2018. The decline was $6 million of noninterest expense related to property damage and community and employee support asprimarily a result a of Hurricane Harvey. Additionally, we providedthe Company recording a $34negative $47 million qualitative increase in the allowanceprovision for credit losses (“ACL”) duein the first quarter of 2018, compared with a $12 million provision in the second quarter of 2018. We continue to potential losses caused byimplement technology upgrades and process simplification to ensure current and future performance. See “Areas of focus for 2018” in our 2017 Annual Report on Form 10-K for a discussion of the hurricane.major areas of emphasis in 2018.
Net Interest Income
Net interest income is the difference between interest earned on interest-earning assets and interest paid on interest-bearing liabilities. Taxable-equivalent netNet interest income isincreased to $548 million in the largest portion of our revenue. For the thirdsecond quarter of 2017, taxable-equivalent2018 from $528 million in the second quarter of 2017. The $20 million, or 4%, increase in net interest income was $531primarily due to a $45 million increase in interest and fees on loans resulting from increases in short-term interest rates and loan growth in consumer and commercial loans, partially offset by an increase to interest expense. Interest income in the second quarter of 2018 was positively impacted by $1 million of interest income recoveries of at least $1 million per loan compared with $537$16 million of such recoveries in the second quarter of 2017. Adjusting for these interest income recoveries, net interest income would have increased by $35 million, or 7%.
Interest expense increased $28 million from the second quarter of 2017 to the second quarter of 2018 due to a $15 million increase in interest on deposits due to higher rates paid and a $13 million increase in interest on short-term borrowings. We have remained disciplined in our deposit pricing, as over the past twelve months the Federal Reserve has increased the overnight benchmark Federal Funds rate by 75 bps, while the rate paid on the Company’s interest-bearing deposits increased 19 bps and the rate paid on total deposits increased 11 bps.
Net Interest Margin and Interest Rate Spreads
The NIM was 3.56% and 3.52% for the second quarters of 2018 and 2017, respectively, and 3.56% for the first quarter of 2018. Excluding the effect of the previously mentioned interest income recoveries and adjusting for the effect of the change to the corporate tax rate on fully taxable equivalent yields, the yield on interest-earning assets would have increased 34 bps from the same prior year period. Adjusting for the same items and $11 million of similar interest income recoveries in the first quarter of 2018 the NIM would have been 3.55% for the second quarter of 2018 compared with 3.39% for the second quarter of 2017 and $476 million3.49% for the thirdfirst quarter of 2016.2018. The linked quarter decrease was primarily due to $16 million of interest income recoveries in the prior quarter, which did not repeat. Between the third quarters of 2016 and 2017, taxable-equivalent net interest income increased $55 million, which was driven by a larger securities portfolio, growth in the lending portfolio, and increases in short-term rates, which improved loan yields. We expect the size of the securities portfolio to be relatively stable during the next several quarters and we are not assuming any further increases in benchmark interest rates. Therefore, we expect net interest income to increase only moderately over the next twelve months.
Net interest margin and Interest Rate Spreads in 2017 vs. 2016
The NIM was 3.45% and 3.36% for the third quarters of 2017 and 2016, respectively, and 3.52% for the second quarter of 2017. The increased NIM for the third quarter,2018, compared with the same prior year period, resultedbenefited from the combinationrecent increases

Table of several factors. During 2016, we continued to make changes in asset mix, by moving funds from lower-yielding money market investments to purchase investment securities, coupled with our loan growth. The NIM was also positively impacted by increases Contents
ZIONS BANCORPORATION AND SUBSIDIARIES

in short-term interest rates. These factors have been somewhat offset because recently we have also usedrates and deposit pricing discipline. Average interest-earning assets increased $1.2 billion from the second quarter of 2017 to the second quarter of 2018, with average rates improving 21 bps. Additionally, the NIM was negatively impacted 3 bps by the decrease in the corporate tax rate from 35% to 21%.
Average interest-bearing liabilities increased $1.4 billion in the second quarter of 2018 compared with the second quarter of 2017 as a result of increased interest-bearing deposits and wholesale borrowings to fund some of the balance sheet growth. Average interest-earning assets increased $4.9 billion from the third quarter of 2016, withThe average rates improving 15 bps. Averagerate on interest-bearing liabilities increased $3.9 billion over the31 bps during this same period due to rising interest rates and averageincreased rates increased 12 bps.paid on deposits.
The average loan portfolio increased $1.3$2.0 billion, or 3.2%5%, between the thirdsecond quarter of 2017 and the thirdsecond quarter of 2016.2018. Most of the averagethis growth was in the consumermunicipal, 1-4 family residential, portfolio, where Company yields are generally lower than on commercial and industrial, and owner-occupied loans. The average loan yield increased 1619 bps over the same period, with increases in the average rates for commercial, CRE, and consumer loans of 1724 bps, 2720 bps, and 515 bps, respectively. WeBenchmark interest rates have experienced some improvementincreased several times beginning in interest income in response to short-term rate increases.the fourth quarter of 2015, which has had a positive impact on NIM and spreads, as our earning assets generally reprice quicker than our funding sources. A portion of our variable-rate loans were not affected by these changes in those indicesprimarily due to interest rate floors,having longer reset frequency,frequencies, or indicesbecause a substantial portion of our earning assets are tied to longer-term rate indices. The longer-term rates which rates have beenwere impacted by a flattening of therelatively flat yield curve in recentduring the last several quarters. We expect continued strongoverall loan growth in residential mortgages, with moderate growth in both CRE and commercial and industrial loans.to be moderate.
Average available-for-sale (“AFS”) securities balances fordecreased $0.6 billion from the thirdsecond quarter of 2017 increased by $5.5 billion compared withto the same prior year period.second quarter of 2018. Yields on average AFS securities increased slightly by 303 bps over the same period.

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ZIONS BANCORPORATION AND SUBSIDIARIES

rising market interest rates on variable-rate and recently purchased fixed-rate agency mortgage-backed securities.
Average noninterest-bearing demand deposits provided us with low cost funding and comprised 45.8%approximately 45% of average total deposits which totaled $51.9for both the second quarters of 2017 and 2018. Average total deposits were $52.9 billion for the thirdsecond quarter of 2017,2018 compared with 44.3% of average total deposits, which totaled $50.7$52.3 billion for the thirdsecond quarter of 2016.2017. Average interest-bearing deposits increased by 0.3%were $29.3 billion in the thirdsecond quarter of 2017,2018, compared with $28.5 billion for the same prior year period, and the average rate paid increased 319 bps. Over the past twelve months we have seen a deposit beta of approximately 3%, which is a relatively low value for the current environment. We have been selectively increasing deposit pricing, in certain markets and with certain clients, but we have not generally experienced significant pressure to increase all deposit rates. Although we consider a wide variety of sources when determining our funding needs, we benefit from access to deposits from a significant number of small to mid-sized business customers, particularly noninterest-bearing deposits, that provide us with a low cost of funds and have a positive impact on our NIM. Further detail oninformation regarding deposit betasassumptions is discussed in “Interest Rate and Market Risk Management” on page 30.26.
The averageAs mentioned previously, the Company has used short-term Federal Home Loan Bank (“FHLB”) borrowings to fund some of its balance of long-term debt was $297 million lower for the third quarter of 2017sheet growth. Average short-term borrowings increased $0.6 billion compared with the same prior year period and the average interest rate paid increased by 98 bps as a result of early calls and maturities. rising short-term interest rates.
The average interest rate paid on long-term debttotal deposits and interest-bearing liabilities increased by 5819 bps betweenfrom 0.21% for the same periods because remaining debtsecond quarter of 2017 to 0.40% for the second quarter of 2018, primarily due to an increase in both the amount of wholesale funding and the rate paid on wholesale funding and deposits. The total cost of deposits for the second quarter of 2018 was at a higher average rate than0.22%, compared with 0.11% for the debt that maturedsecond quarter of 2017.
The NIM was 3.56% and 3.45% for the first six months of 2018 and 2017, respectively. The increase in the year-to-date NIM was called. Average short-term borrowings increased $4.3 billion. Further changesalso due to the recent increases in short-term borrowing will be driven by balancing changes in depositsinterest rates and loans as we do not foresee significant increases in investment security balances.deposit pricing discipline.
The spread on average interest-bearing funds was 3.26% and 3.23%3.36% for the thirdsecond quarters of 2018 and 2017, respectively, and 2016,3.29% and 3.30% for the first six months of 2018 and 2017, respectively. The spread on average interest-bearing funds for these periods was affected by the same factors that had an impact on the NIM. Although the spread on interest-bearing funds decreased from the second quarter of 2017 to the second quarters of 2018, the

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NIM still increased over the same period. This is because as interest rates continue to increase, the value of the noninterest-bearing deposits on the NIM also increases.
We expect the mix of interest-earning assets to continue to change over the next several quarters primarily due to growth in commercial loans, including municipal loans, in addition to growth in both CRE and non-oil and gas-related commercial and industrial loans. We anticipate this growth will be partially offset by continued modest reduction in the National Real Estate portfolio.
Interest rate spreads and margin are impacted by the mix of assets we hold, the composition of our loan and securities portfolios and the type of funding we use. We expect some modest resistance to increased spreads due to both a changeused. Assuming no additional increases in the mixFederal Funds rate or prepayment speeds of securities purchased at a premium, we expect the yield on the securities portfolio to increase slightly, as the cash flow from the portfolio (increasing concentration in lower-yielding residential mortgages), as well as older, higher-yielding loans maturing or paying down and being replacedis redeployed into securities with new, lower-yielding loans. Generally,yields that are slightly accretive to the new loans are of a higher credit quality than the maturing loans, which has resulted in lower-yielding loans.overall portfolio.
Our estimates of the Company’s interest rate risk position are highly dependent upon a number of assumptions regarding the repricing behavior of various deposit and loan types in response to changes in both short-term and long-term interest rates, balance sheet composition, and other modeling assumptions, as well as the actions of competitors and customers in response to those changes. In addition, our modeled projections for noninterest-bearing demand deposits, which are a substantial portion of our deposit balances, are particularly reliant on assumptions for which there is little historical experience due to the prolonged period of very low interest rates. Further detail on interest rate risk is discussed in “Interest Rate and Market Risk Management” on page 30.
Refer to the “Liquidity Risk Management” section beginning on page 34 for more information on how we manage liquidity risk.26.
The following schedule summarizes the average balances, the amount of interest earned or incurred, and the applicable yields for interest-earning assets and the costs of interest-bearing liabilities that generate taxable-equivalent net interest income.

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ZIONS BANCORPORATION AND SUBSIDIARIES

CONSOLIDATED AVERAGE BALANCE SHEETS, YIELDS AND RATES
(Unaudited)
Three Months Ended
September 30, 2017
 Three Months Ended
September 30, 2016
Three Months Ended
June 30, 2018
 Three Months Ended
June 30, 2017
(Dollar amounts in millions)
Average
balance
 
Amount of
interest 1
 
Average
yield/rate
 
Average
balance
 
Amount of
interest 1
 
Average
yield/rate
Average
balance
 
Amount of
interest 1
 
Average
yield/rate
 
Average
balance
 
Amount of
interest 1
 
Average
yield/rate
ASSETS                      
Money market investments$1,246
 $5
 1.44% $3,140
 $5
 0.63%$1,317
 $7
 2.02% $1,572
 $5
 1.20%
Securities:                      
Held-to-maturity750
 7
 3.96
 706
 8
 4.33
780
 7
 3.60
 788
 8
 3.97
Available-for-sale15,197
 81
 2.12
 9,698
 44
 1.82
14,745
 78
 2.14
 15,386
 81
 2.11
Trading account43
 
 3.73
 80
 1
 3.34
179
 2
 4.06
 79
 
 3.43
Total securities 2
15,990
 88
 2.21
 10,484
 53
 2.00
15,704
 87
 2.23
 16,253
 89
 2.20
Loans held for sale52
 1
 4.29
 133
 1
 3.34
72
 1
 4.18
 100
 1
 3.24
Loans and leases 3
                      
Commercial22,261
 245
 4.36
 21,816
 230
 4.19
23,275
 272
 4.68
 21,885
 242
 4.44
Commercial real estate11,192
 126
 4.46
 11,331
 119
 4.19
11,075
 136
 4.94
 11,236
 133
 4.74
Consumer10,379
 101
 3.86
 9,340
 89
 3.81
10,892
 108
 3.98
 10,122
 97
 3.83
Total loans and leases43,832
 472
 4.27
 42,487
 438
 4.11
45,242
 516
 4.57
 43,243
 472
 4.38
Total interest-earning assets61,120
 566
 3.67
 56,244
 497
 3.52
62,335
 611
 3.93
 61,168
 567
 3.72
Cash and due from banks767
     556
    546
     795
    
Allowance for loan losses(540)     (609)    (480)     (546)    
Goodwill1,014
     1,014
    
Core deposit and other intangibles4
     11
    
Goodwill and intangibles1,016
     1,020
    
Other assets2,974
     2,846
    3,088
     2,974
    
Total assets$65,339
     $60,062
    $66,505
     $65,411
    
LIABILITIES AND SHAREHOLDERS’ EQUITYLIABILITIES AND SHAREHOLDERS’ EQUITY          LIABILITIES AND SHAREHOLDERS’ EQUITY          
Interest-bearing deposits:                      
Savings and money market$25,190
 10
 0.16% $25,683
 9
 0.15%$25,479
 17
 0.26% $25,467
 9
 0.14%
Time2,933
 5
 0.70
 2,409
 3
 0.51
3,807
 12
 1.27
 3,048
 5
 0.66
Foreign
 
 
 117
 
 0.30
Total interest-bearing deposits28,123
 15
 0.21
 28,209
 12
 0.18
29,286
 29
 0.39
 28,515
 14
 0.20
Borrowed funds:                      
Federal funds and other short-term borrowings4,609
 14
 1.17
 343
 
 0.22
Federal funds purchased and other short-term borrowings4,927
 24
 1.92
 4,302
 10
 0.94
Long-term debt383
 6
 5.71
 680
 9
 5.13
383
 5
 5.77
 383
 6
 5.77
Total borrowed funds4,992
 20
 1.52
 1,023
 9
 3.48
5,310
 29
 2.19
 4,685
 16
 1.34
Total interest-bearing liabilities33,115
 35
 0.41
 29,232
 21
 0.29
34,596
 58
 0.67
 33,200
 30
 0.36
Noninterest-bearing deposits23,798
     22,466
    23,610
     23,819
    
Total deposits and interest-bearing liabilities58,206
 58
 0.40

57,019
 30
 0.21
Other liabilities630
     668
    661
     565
    
Total liabilities57,543
     52,366
    58,867
     57,584
    
Shareholders’ equity:                      
Preferred equity566
     710
    566
     684
    
Common equity7,230
     6,986
    7,072
     7,143
    
Total shareholders’ equity7,796
     7,696
    7,638
     7,827
    
Total liabilities and shareholders’ equity$65,339
     $60,062
    $66,505
     $65,411
    
Spread on average interest-bearing funds    3.26%     3.23%    3.26%     3.36%
Taxable-equivalent net interest income and net yield on interest-earning assets  $531
 3.45%   $476
 3.36%  $553
 3.56%   $537
 3.52%
1 
Taxable-equivalentRates are calculated using amounts in thousands and taxable-equivalent rates used where applicable. The taxable-equivalent rates used are the rates that were applicable at the time of each respective reporting period.
2 
Quarter-to-date interest on total securities includes $34$36 million and $29$35 million of premium amortization, as of SeptemberJune 30, 20172018 and SeptemberJune 30, 2016,2017, respectively.
3 
Net of unearned income and fees, net of related costs. Loans include nonaccrual and restructured loans.

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Nine Months Ended
September 30, 2017
 Nine Months Ended
September 30, 2016
Six Months Ended
June 30, 2018
 Six Months Ended
June 30, 2017
(Dollar amounts in millions)
Average
balance
 
Amount of
interest 1
 
Average
yield/rate
 
Average
balance
 
Amount of
interest 1
 
Average
yield/rate
Average
balance
 
Amount of
interest 1
 
Average
yield/rate
 
Average
balance
 
Amount of
interest 1
 
Average
yield/rate
ASSETS                      
Money market investments$1,598
 $14
 1.15% $4,099
 $18
 0.57%$1,406
 $13
 1.85% $1,777
 $9
 1.05%
Securities:                      
Held-to-maturity795
 23
 3.94
 646
 22
 4.53
784
 14
 3.57
 817
 16
 3.93
Available-for-sale14,873
 236
 2.12
 8,889
 130
 1.95
14,846
 159
 2.16
 14,709
 155
 2.12
Trading account61
 2
 3.61
 71
 2
 3.59
141
 3
 4.03
 70
 1
 3.57
Total securities 2
15,729
 261
 2.22
 9,606
 154
 2.13
15,771
 176
 2.24
 15,596
 172
 2.22
Loans held for sale95
 2
 3.42
 133
 4
 3.61
62
 1
 4.08
 116
 2
 3.23
Loans and leases 3
                      
Commercial21,920
 712
 4.34
 21,791
 684
 4.20
23,158
 538
 4.69
 21,747
 467
 4.33
Commercial real estate11,222
 377
 4.49
 11,020
 350
 4.24
11,070
 264
 4.81
 11,238
 251
 4.50
Consumer10,076
 289
 3.84
 9,057
 261
 3.86
10,826
 212
 3.96
 9,921
 189
 3.83
Total loans and leases43,218
 1,378
 4.26
 41,868
 1,295
 4.13
45,054
 1,014
 4.54
 42,906
 907
 4.26
Total interest-earning assets60,640
 1,655
 3.65
 55,706
 1,471
 3.53
62,293
 1,204
 3.90
 60,395
 1,090
 3.64
Cash and due from banks844
     601
    569
     884
    
Allowance for loan losses(551)     (605)    (501)     (556)    
Goodwill1,014
     1,014
    
Core deposit and other intangibles6
     13
    
Goodwill and intangibles1,016
     1,021
    
Other assets2,967
     2,751
    3,059
     2,963
    
Total assets$64,920
     $59,480
    $66,436
     $64,707
    
LIABILITIES AND SHAREHOLDERS’ EQUITYLIABILITIES AND SHAREHOLDERS’ EQUITY          LIABILITIES AND SHAREHOLDERS’ EQUITY          
Interest-bearing deposits:                      
Savings and money market$25,515
 28
 0.15% $25,605
 28
 0.15%$25,388
 28
 0.22% $25,680
 19
 0.14%
Time2,946
 15
 0.65
 2,230
 8
 0.47
3,545
 20
 1.15
 2,953
 9
 0.63
Foreign
 
 
 163
 
 0.28
Total interest-bearing deposits28,461
 43
 0.20
 27,998
 36
 0.17
28,933
 48
 0.34
 28,633
 28
 0.19
Borrowed funds:                      
Federal funds and other short-term borrowings3,951
 29
 0.98
 386
 1
 0.22
Federal funds purchased and other short-term borrowings5,315
 45
 1.71
 3,617
 15
 0.85
Long-term debt428
 18
 5.81
 759
 29
 5.06
383
 11
 5.80
 451
 13
 5.85
Total borrowed funds4,379
 47
 1.45
 1,145
 30
 3.43
5,698
 56
 1.99
 4,068
 28
 1.40
Total interest-bearing liabilities32,840
 90
 0.37
 29,143
 66
 0.30
34,631
 104
 0.61
 32,701
 56
 0.34
Noninterest-bearing deposits23,694
     22,064
    23,514
     23,641
    
Total deposits and interest-bearing liabilities58,145
 104
 0.36
 56,342
 56
 0.19
Other liabilities609
     615
    658
     598
    
Total liabilities57,143
     51,822
    58,803
     56,940
    
Shareholders’ equity:                      
Preferred equity653
     772
    566
     697
    
Common equity7,124
     6,886
    7,067
     7,070
    
Total shareholders’ equity7,777
     7,658
    7,633
     7,767
    
Total liabilities and shareholders’ equity$64,920
     $59,480
    $66,436
     $64,707
    
Spread on average interest-bearing funds    3.28%     3.23%    3.29%     3.30%
Taxable-equivalent net interest income and net yield on interest-earning assets  $1,565
 3.45%   $1,405
 3.37%  $1,100
 3.56%   $1,034
 3.45%
1 
Taxable-equivalentRates are calculated using amounts in thousands and taxable-equivalent rates used where applicable. The taxable-equivalent rates used are the rates that were applicable at the time of each respective reporting period.
2 
Year-to-dateQuarter-to-date interest on total securities includes $101$68 million and $73$66 million of premium amortization, as of SeptemberJune 30, 20172018 and SeptemberJune 30, 2016,2017, respectively.
3 
Net of unearned income and fees, net of related costs. Loans include nonaccrual and restructured loans.

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Provision for Credit Losses
The provision for credit losses is the combination of both the provision for loan losses and the provision for unfunded lending commitments. The provision for loan losses is the amount of expense that, in our judgment, is required to maintain the allowance for loan and lease losses (“ALLL”) at an adequate level based on the inherent risks in the loan portfolio. The provision for unfunded lending commitments is used to maintain the reserve for unfunded lending commitments (“RULC”) at an adequate level based on the inherent risks associated with such commitments. In determining adequate levels of the ALLL and RULC, we perform periodic evaluations of our various loan portfolios, the levels of actual charge-offs, credit trends, and external factors. See Note 6 of our 20162017 Annual Report on Form 10-K and “Credit Risk Management” on page 20 for morecontains information on how we determine the appropriate level for the ALLLallowance for loan and lease losses (“ALLL”) and the RULC.reserve for unfunded lending commitments (“RULC”).
The provision for loan losses was $5 million in the thirdsecond quarter of 2017,2018, compared with $19$7 million in the same prior year period. Strong overallperiod, and a negative provision of $40 million in the first quarter of 2018. The $5 million provision primarily reflects qualitative adjustments related to enhancements to our internal risk-grading system, increased economic uncertainty related to potential trade disruptions, and the potential credit impacts of rising interest rates, offset by net recoveries and improved credit quality including steady improvementmetrics in the entire loan portfolio. During the first quarter of 2018, the provision for loan losses was negative as a result of improving credit quality, particularly in the oil and gas-related portfolio, have ledand minimal incurred losses-to-date from Hurricane Harvey. Asset quality during the second quarter of 2018 continued to lower modeled reserves, requiring a lower provision. Nonaccrualimprove for the entire loan portfolio when compared with the second quarter of 2017, primarily due to improvements in the oil and gas-related portfolio and decreases in overall classified and nonperforming assets. Classified and nonaccrual loans both decreased betweenin the two periodstotal portfolio declined by $98$370 million and $367$144 million, respectively. Net charge offs also declined $22respectively, from the second quarter of 2017. During the second quarter of 2018, there were net recoveries of $12 million, overcompared with net charge-offs of $7 million during the same timeframe. second quarter of 2017.
The Company has roughly $8 billionprovision for loan losses was a negative $35 million during the first six months of loan balances2018, compared with $30 million during the first six months of 2017. This decrease was primarily as a result of the previously mentioned improving credit quality, particularly in the geographic area impacted byoil and gas-related portfolio, and minimal incurred losses-to-date from Hurricane Harvey.Harvey during the first six months of 2018, as well as charge-offs related to an isolated event with a single, non-oil and gas-related borrower during the first six months of 2017. We have reached outsince had a partial recovery on the charge-off related to many of our customers to understand their concerns and to offer reasonable assistance. Using multiple top-down and bottom-up analyses to estimate losses resultingthe isolated event from the hurricane, we have added a qualitative allowance of $34 million.2017.
During the thirdsecond quarter of 2017,2018, we recorded a $(4)$7 million provision for unfunded lending commitments, compared with a $(3)$3 million provision in the thirdsecond quarter of 2016.2017. This increase was due to increased unfunded lending commitments and a change in the mix of the portfolio. From quarter to quarter, the provision for unfunded lending commitments may be subject to sizable fluctuations due to changes in the timing and volume of loan commitments, originations, fundings, and changes in credit quality.
The ACL,allowance for credit losses (“ACL”), which is the combination of both the ALLL and the RULC, decreased $59 million, when compared with the thirdsecond quarter of 2016. Even with loan growth and the above-mentioned hurricane impact, robust2017. This was mainly due to improved credit quality metrics and decreased net charge-offs in the total loan portfolio were responsible for much of this reduction. Further, declining oil and gas-related exposure and increasing non-oil and gas-related C&I and 1-4 family residential mortgage exposure improved the risk profile of the portfolio.
Noninterest Income
 Three Months Ended
September 30,
 
Percent
change
 Nine Months Ended
September 30,
 
Percent
change
(Dollar amounts in millions)2017 2016  2017 2016 
            
Service charges and fees on deposit accounts$42
 $45
 (6.7)% $127
 $128
 (0.8)%
Other service charges, commissions and fees55
 54
 1.9
 160
 156
 2.6
Wealth management income11
 10
 10.0
 30
 27
 11.1
Loan sales and servicing income6
 11
 (45.5) 19
 29
 (34.5)
Capital markets and foreign exchange8
 6
 33.3
 21
 16
 31.3
Customer-related fees122
 126
 (3.2) 357
 356
 0.3
Dividends and other investment income9
 9
 
 31
 20
 55.0
Securities gains, net5
 8
 (37.5) 13
 11
 18.2
Other3
 2
 50.0
 3
 1
 200.0
Total noninterest income$139
 $145
 (4.1) $404
 $388
 4.1
Noninterest income represents revenues we earn for products and services that have no associated interest rate or yield. For the thirdsecond quarter of 2017,2018, noninterest income decreasedincreased $6 million, or 4.1% compared with the third quarter of 2016. Through September 30, 2017, year-to-date noninterest income increased $16 million, or 4.1%5%, compared with the first nine months of 2016. Noninterest income decreased compared with the thirdsecond quarter of 2016 due to lower loan sales volume, decreased deposit fees, and a decline in net securities gains.

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2017. We believe a subtotal of customer-related fees provides a better view of income over which we have more direct control. It excludes items such as dividends, insurance-related income, mark-to-market adjustments on certain derivatives, and securities gains and losses. The following schedule presents a comparison of the major components of noninterest income.

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NONINTEREST INCOME
 Three Months Ended
June 30,
 
Amount
change
Percent
change
 Six Months Ended
June 30,
 
Amount
change
Percent
change
(Dollar amounts in millions)2018 2017  2018 2017 
              
Service charges and fees on deposit accounts$42
 $43
 $(1)(2)% $84
 $85
 $(1)(1)%
Other service charges, commissions and fees55
 56
 (1)(2) 110
 105
 5
5
Wealth management and trust income14
 10
 4
40
 25
 20
 5
25
Loan sales and servicing income7
 6
 1
17
 13
 13
 

Capital markets and foreign exchange7
 6
 1
17
 15
 13
 2
15
Customer-related fees125
 121
 4
3
 247
 236
 11
5
Dividends and other investment income11
 10
 1
10
 22
 22
 

Securities gains, net1
 2
 (1)(50) 1
 7
 (6)(86)
Other1
 (1) 2
NM
 6
 (1) 7
NM
Total noninterest income$138
 $132
 $6
5
 $276
 $264
 $12
5
Customer-related fees decreasedincreased $4 million, or 3%, from the thirdsecond quarter of 2016. Service charges on deposit accounts decreased largely2017 to the second quarter of 2018 primarily due to increased earnings credits on analyzed business accounts. Loan sales and servicing income declined primarily because loan sales volume was down from an unusually high amount in the third quarter of 2016 and a $2 million loss on a loan classified as held for sale in the most recent period. The year-to-date decline in loan sales and servicing income was due to similar factors. We continue to see steady improvement in credit card interchange fees and are growing our wealth management and trust businesses.income, loan syndication fees, and investment service fees. Wealth management and trust income increased by $4 million, or 40%, due to both increased corporate and personal trust income. Improvements in platform and product simplifications contributed to this increase. We have experienced a decrease in mortgage fees due to higher interest rates resulting in less originations and mortgage-related activity.
Customer-related fees increased $11 million, or 5% from the first six months of 2017 to the first six months of 2018. This increase was a result of the same factors as the increase from the second quarter of 2017 to the second quarter of 2018. Other noninterest income increased by $7 million from the first six months of 2017 to the first six months of 2018, primarily due to favorable credit valuations on client-related derivatives and net gains on sales of assets. Relative to second quarter results, we expect moderate growth in customer-related fees over the next twelve months.
Noninterest Expense
Noninterest expense increased by $23 million, or 6%, from the second quarter of 2017 to the second quarter of 2018. The Company remains focused on expense control efforts, while continuing to invest in technology and simplification initiatives; however, due to a lower-than-normal incentive compensation expense accrual in the same prior year period, as well as a higher than expected accrual in the current period due in part to stronger than expected credit quality performance, revenue growth, and overall profitability, the increase in noninterest expense was above our targeted growth rate of low single-digit percentage range relative to the prior year.
The following schedule presents a comparison of the major components of noninterest expense.

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NONINTEREST EXPENSE
Three Months Ended
September 30,
 
Percent
change
 Nine Months Ended
September 30,
 
Percent
change
Three Months Ended
June 30,
 
Amount
change
Percent
change
 Six Months Ended
June 30,
 
Amount
change
Percent
change
(Dollar amounts in millions)2017 2016 2017 2016 2018 2017 2018 2017 
                        
Salaries and employee benefits$253
 $242
 4.5 % $756
 $742
 1.9 %$266
 $240
 $26
11 % $535
 $502
 $33
7 %
Occupancy, net35
 33
 6.1
 101
 93
 8.6
32
 32
 

 63
 66
 (3)(5)
Furniture, equipment and software, net32
 29
 10.3
 96
 92
 4.3
32
 32
 

 65
 64
 1
2
Other real estate expense, net(1) 
 NM
 (1) (2) 50.0

 
 
NM
 1
 
 1
NM
Credit-related expense7
 7
 
 23
 19
 21.1
7
 8
 (1)(13) 13
 15
 (2)(13)
Provision for unfunded lending commitments(4) (3) (33.3) (6) (13) 53.8
7
 3
 4
(133) 
 (2) 2
100
Professional and legal services14
 14
 
 42
 38
 10.5
14
 14
 

 26
 28
 (2)(7)
Advertising6
 6
 
 17
 17
 
7
 6
 1
17
 13
 11
 2
18
FDIC premiums15
 12
 25.0
 40
 28
 42.9
14
 13
 1
8
 26
 25
 1
4
Amortization of core deposit and other intangibles2
 2
 
 5
 6
 (16.7)
Other54
 61
 (11.5) 159
 161
 (1.2)49
 57
 (8)(14) 98
 110
 (12)(11)
Total noninterest expense$413
 $403
 2.5
 $1,232
 $1,181
 4.3
$428
 $405
 $23
6
 $840
 $819
 $21
3
Adjusted noninterest expense 1
$414
 $404
 2.5
 $1,225
 $1,185
 3.4
$420
 $399
 $21
5
 $839
 $811
 $28
3
1 For information on non-GAAP financial measures see “GAAP to Non-GAAP Reconciliations” on page 5
We have previously forecast increases in noninterest expense for 2017. Noninterest expense increased by $10 million over the third quarter of 2016Salary and $51 million compared with the first nine months of 2016. Expenses increased in most areas, but were most impacted by higher FDIC premiums, salaries and benefits, and occupancy costs.
Salary andemployee benefits expense was up $11$26 million fromin the thirdsecond quarter of 2016, and $14 million year to date. Elevated noninterest expense in the third quarter of 2016 was partially offset by a lower accrual for incentive compensation; this reduction did not occur in the most recent quarter. In 2017, we have also experienced a higher volume of medical claims in the Company’s self-funded healthcare plan.
Occupancy expense increased $2 million from the third quarter of 2016, and increased $8 million2018 compared with the first nine monthssecond quarter of 2016. The increase was2017 primarily due to damagean $11 million increase in incentive compensation due to buildings caused by Hurricane Harvey. In the first quarter ofstronger financial performance relative to 2017, we also placed a newly constructed office building into operationan $8 million increase in Houstonbase salaries due to increased headcount and have incurred additional depreciationannual merit increases, and other transition expenses$3 million increases in base salaries and bonuses to be paid to certain employees as a result. The Company has several signed leases with tenants, and as those tenants move in, we expect additional rental income to mostly offset the increase we have observed thus far in 2017.
We implemented the first releaseresult of the TCS BαNCS core servicing system during the second quarter. Associated amortization of the costs capitalized during development caused most of the $3 million variance from the third quarter of 2017 in furniture, equipment and software expense.
recent tax reform. The Company’s provision for unfunded lending commitments has remained relatively steady over the past twelve months. We released $1increased by $4 million, more of our reserve through the provision forprimarily due to increased unfunded lending commitments

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compared with the third quarter of 2016, and released $7 million less compared with the first nine months of 2016. Credit concerns in the oil and gas-related portfolio have stabilized as oil prices have rebounded. Refer to the Provision for Credit Losses section above for more details.
FDIC premium expense increased $3 million or 25.0% from the third quarter of 2016, and $12 million, or 42.9%, compared with the first nine months of 2016. Expense increased in both cases due to a higher deposit base and the FDIC surcharge. The FDIC approved a change in deposit insurance assessments that implemented a Dodd-Frank Act provision requiring banksthe mix of the portfolio. For further information see “Provision for Credit Losses” on page 14. Other noninterest expense decreased by $8 million, primarily due to reduced revenue sharing with over $10 billion in assets to recapitalize the FDIC insurance fundfor certain loans purchased in 2009 as the agreement with the FDIC ended in the first quarter of 2018.
Net occupancy decreased by $3 million from the first six months of 2017 to 1.35%the first six months of 2018 as additional rental income was received on a newly constructed building in Houston. Both credit-related fees and professional and legal services decreased by $2 million over an eight-quarterthe same year-to-date period after it reachedas a 1.15% reserve ratio. The 1.15% threshold was reached atresult of lower fees related to repossessions and a decrease in consulting fees, respectively. Other changes between the endfirst six months of 2018 and 2017 are due to the same factors as for the changes between the second quarters of 2018 and 2017.
Adjusted noninterest expense for the second quarter of 2016 and the2018 increased premium has been effective since then.
Other noninterest expense decreased $7$21 million, over the third quarter of 2016 and $2or 5%, to $420 million, compared with $399 million for the first nine months of 2016. A limited increase in losses due to Hurricane Harvey in the most recent quarter was more than offset by lower operational losses and legal reserves. No single item had a significant impact on the year-to-date variance.
Our goal is to limit adjusted noninterest expense growth to 2-3% in 2017 as we continue to invest in people and technology. For the first nine months of 2017, adjusted noninterest expense was $1.225 billion and we are committed to achieving our target.same prior year period. To arrive at adjusted noninterest expense, GAAP noninterest expense is adjusted to exclude certain expense items, which are the same as those items excluded in arriving at the efficiency ratio (see “GAAP to Non-GAAP Reconciliations” on page 5 for more information regarding the calculation of the efficiency ratio). The main variance between noninterest expense and adjusted noninterest expense for the second quarters of 2018 and 2017 is the provision for unfunded lending commitments, which were $7 million and $3 million, respectively. We still expect adjusted noninterest expense for 2018 to experience an increase in the low single-digit percentage range relative to the prior year.
Income Taxes
Income tax expense for the thirdsecond quarter of 20172018 was $83$56 million, compared with $65$80 million for the same prior year period. The effective tax rates were 34.2%22.1% and 33.9%32.3% for the thirdsecond quarters of 20172018 and 2016,2017, respectively. Income tax expense for the first six months of 2018 was $207$126 million compared with $124 million for the first ninesix months of 2017 and $166 million for the first nine months of 2016.2017. The effective tax rates for these year-to-date periods were 30.6%22.5% and 33.3%28.7%, respectively. TaxThe tax rates generally benefitedfor 2018 and 2017 were reduced by nontaxable municipal interest income and nontaxable income from the nontaxability of certain bank-owned life insurance. The income items. 2017 rates were furthertax rate for 2018 was positively impacted by the following factors:
We reevaluated our state tax positionsdecrease in the first quartercorporate federal income tax rate to 21% from 35% due to the Tax Cuts and Jobs Act, which was effective January 1, 2018. This rate benefit was partially reduced by the non-deductibility of FDIC premiums and certain fringe benefits as

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enacted by the new tax law. The tax rate for 2017 which resulted inwas also driven by a one-time $14 million tax benefit.
We reduced incomebenefit to tax expense byrelated to state tax adjustments and a one-time $4 million in the second quarter of 2017benefit due to changes in the carrying value of various state deferred tax items.
We recorded an $8 million benefit in the first nine months of 2017, from the implementation of new accounting guidance related to stock-based compensation.
We had a net deferred tax asset (“DTA”) balance of $207$149 million at SeptemberJune 30, 2017,2018, compared with $250$93 million at December 31, 2016.2017. The decreaseincrease in the net DTA resulted primarily from net charge-offs exceeding the provision for loan losses, the payoutincrease of accrued compensation, and the reduction of unrealized losses in other comprehensive income (“OCI”) related to securities. Asecurities, the decrease in deferred tax liabilities during 2017, which related to premises and equipment, and the deferred gain on a prior period debt exchange,exchange. Net charge-offs exceeding the provision for loan losses offset some of the overall decreaseincrease in DTA.
Preferred Dividends
Our preferredPreferred dividends of $10 million during the second quarter of 2018 decreased $2 million when compared with the thirdsecond quarter of 2016 and $6 million, compared with the first nine months2017. This decrease was a result of 2016. Inour redemption of all outstanding shares of our 7.9% Series F preferred stock during the second quartersquarter of 2017 and 2016, the Company redeemed preferred stock of $144 million and $118 million, respectively.2017. The total one-time reduction to net earnings applicable to common shareholders associated with the preferred stock redemptionsredemption was $2 million. The preferred stock redemption was also the reason for preferred dividends decreasing by $6 million forfrom the first six months of 2017 redemption and $10 million for the 2016 redemption, primarily due to the accelerated recognitionfirst six months of preferred stock issuance costs.

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As a result of these transactions, preferred2018. Preferred dividends are expected to be $10$34 million in the fourth quarter of 2017 and the second quarter of 2018, and $8 million in the first and third quartersfor all of 2018.
BALANCE SHEET ANALYSIS
Interest-Earning Assets
Interest-earning assets are those assets that have interest rates or yields associated with them. One of our goals is to maintain a high level of interest-earning assets relative to total assets while keeping nonearning assets at a minimum. Interest-earning assets consist of money market investments, securities, loans, and leases.
Another goal is to maintain a higher-yielding mix of interest-earning assets, such as loans, relative to lower-yielding assets, while maintaining adequate levels of highly liquid assets. As a result of this goal we redeployed funds from lower-yielding money market investments, in addition to using wholesale borrowings, to purchase agency securities.
For information regarding the average balances of our interest-earning assets, the amount of revenue generated by them, and their respective yields, see the average balance sheet on page 11.12.
Average interest-earning assets were $60.6$62.3 billion for the first ninesix months of 2017,2018, compared with $55.7$60.4 billion for the first ninesix months of 2016.2017. Average interest-earning assets as a percentage of total average assets for the first ninesix months of 2018 and 2017 were 94% and 2016 were 93.4% and 93.7%93%, respectively.
Average loans were $43.2$45.1 billion and $41.9$42.9 billion for the first ninesix months of 20172018 and 2016,2017, respectively. Average loans as a percentage of total average assets for the first ninesix months of 20172018 were 66.6%68%, compared with 70.4%66% in the same prior year period.
Average money market investments, consisting of interest-bearing deposits, federal funds sold, and security resell agreements, decreased by 61.0%21% to $1.6$1.4 billion for the first ninesix months of 2017,2018, compared with $4.1$1.8 billion for the first ninesix months of 2016.2017. Average securities increased by 63.7%1% for the first ninesix months of 2017,2018, compared with the first ninesix months of 2016.2017.
Investment Securities Portfolio
We invest in securities to actively manage liquidity and interest rate risk, in addition to generating revenue for the Company. Refer to the “Liquidity Risk Management” section on page 3429 for additional information on management of liquidity and funding and compliance with Basel III and Liquidity Coverage Ratio (“LCR”) requirements. The following schedule presents a profile of our investment securities portfolio. The amortized cost amounts represent the original cost of the investments, adjusted for related accumulated amortization or accretion of any yield adjustments, and for impairment losses, including credit-related impairment. The estimated fair value measurement levels and methodology are discussed in Note 203 of our 20162017 Annual Report on Form 10-K.

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INVESTMENT SECURITIES PORTFOLIO
September 30, 2017 December 31, 2016June 30, 2018 December 31, 2017
(In millions)Par value 
Amortized
cost
 
Estimated
fair
value
 Par value 
Amortized
cost
 
Estimated
fair
value
Par value 
Amortized
cost
 
Estimated
fair
value
 Par value 
Amortized
cost
 
Estimated
fair
value
Held-to-maturity                      
Municipal securities$747
 $746
 $743
 $868
 $868
 $850
$878
 $878
 $866
 $771
 $770
 $762
Available-for-sale                      
U.S. Treasury securities25
 25
 25
 
 
 
25
 25
 25
 25
 25
 25
U.S. Government agencies and corporations:                      
Agency securities1,839
 1,839
 1,840
 1,847
 1,846
 1,839
1,683
 1,683
 1,657
 1,830
 1,830
 1,818
Agency guaranteed mortgage-backed securities9,537
 9,748
 9,683
 7,745
 7,986
 7,883
9,667
 9,831
 9,538
 9,605
 9,798
 9,666
Small Business Administration loan-backed securities2,055
 2,281
 2,291
 2,066
 2,298
 2,288
1,919
 2,115
 2,071
 2,007
 2,227
 2,222
Municipal securities1,141
 1,281
 1,291
 1,048
 1,182
 1,154
1,197
 1,333
 1,312
 1,193
 1,336
 1,334
Other debt securities25
 25
 25
 25
 25
 24
25
 25
 24
 25
 25
 24
14,622
 15,199
 15,155
 12,731
 13,337
 13,188
Total available-for-sale debt securities14,516
 15,012
 14,627
 14,685
 15,241
 15,089
Money market mutual funds and other87
 87
 87
 184
 184
 184

 
 
 72
 72
 72
14,709
 15,286
 15,242
 12,915
 13,521
 13,372
Total available-for-sale14,516
 15,012
 14,627
 14,757
 15,313
 15,161
Total$15,456
 $16,032
 $15,985
 $13,783
 $14,389
 $14,222
$15,394
 $15,890
 $15,493
 $15,528
 $16,083
 $15,923
The amortized cost of investment securities at SeptemberJune 30, 2017 increased2018 decreased by 11.4%1% from the balances at December 31, 2016, due to purchases of agency guaranteed mortgage-backed securities.2017.
The investment securities portfolio includes $576$496 million of net premium that is distributed across various asset classes as illustrated in the preceding schedule. The purchase premiums and discounts for both held-to-maturity (“HTM”) and AFS securities are amortized and accreted at a constant effective yield to the contractual maturity date and no assumption is made concerning prepayments. As principal prepayments occur, the portion of the unamortized premium or discount associated with the principal reduction is recognized as interest income in the period the principal is reduced. For the three and ninesix months ended SeptemberJune 30, 2017,2018, premium amortization reduced the yield on securities by 89 and 9093 bps respectively, compared with a 117 bps and 11091 bps impact for the same periodsperiod in 2016. The lower level of premium amortization was attributable to slower prepayment speeds. In addition, yields of floating-rate securities, primarily Small Business Administration (“SBA”) loan-backed securities, benefited from increases in reference indices.2017.
As of SeptemberJune 30, 2017,2018, under the GAAP fair value accounting hierarchy, 0.7%0.2% of the $15.2$14.6 billion fair value of the AFS securities portfolio was valued at Level 1, 99.3%99.8% was valued at Level 2, and there were no Level 3 AFS securities. At December 31, 2016, 1.4%2017, 1% of the $13.4$15.2 billion fair value of AFS securities portfolio was valued at Level 1, 98.6%99% was valued at Level 2, and there were no Level 3 AFS securities. See Note 203 of our 20162017 Annual Report on Form 10-K for further discussion of fair value accounting.
Exposure to State and Local Governments
We provide multiple products and services to state and local governments (referred to collectively as “municipalities”), including deposit services, loans, and investment banking services, and we invest in securities issued by the municipalities.

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The following schedule summarizes our exposure to state and local municipalities:
MUNICIPALITIES
(In millions)September 30,
2017
 December 31,
2016
June 30,
2018
 December 31,
2017
      
Loans and leases$1,073
 $778
$1,388
 $1,271
Held-to-maturity – municipal securities746
 868
878
 770
Available-for-sale – municipal securities1,292
 1,154
1,312
 1,334
Trading account – municipal securities55
 112
108
 146
Unfunded lending commitments156
 182
153
 152
Total direct exposure to municipalities$3,322
 $3,094
$3,839
 $3,673

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At SeptemberJune 30, 2017,2018, one municipal loan with a balance of $1 million was on nonaccrual. A significant amount of the municipal loan and lease portfolio is secured by real estate and equipment, and 80.6%79% of the outstanding creditsloans and leases were originated by California Bank & Trust (“CB&T,&T”), Zions Bank, and Vectra.Vectra Bank Colorado (“Vectra”). See Note 6 of the Notes to Consolidated Financial Statements for additional information about the credit quality of these municipal loans.
Growth in municipal exposure came primarily from increases in loans and leases and municipal AFS securities portfolio. AFS securities generally consist of securities with investment-grade ratings from one or more major credit rating agencies.
Foreign Exposure and Operations
Our credit exposure to foreign sovereign risks and total foreign credit exposure is not significant. We also do not have significant foreign exposure to derivative counterparties. We had no foreign deposits at SeptemberJune 30, 20172018 and December 31, 2016.2017.
Loan Portfolio
For the first ninesix months of 20172018 and 2016,2017, average loans accounted for 66.6%68% and 70.4%66%, respectively, of total average assets. As presented in the following schedule, the largest category was commercial and industrial loans, which constituted 31.8%31% of our loan portfolio at SeptemberJune 30, 2017.

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2018.
LOAN PORTFOLIO
September 30, 2017 December 31, 2016June 30, 2018 December 31, 2017
(Dollar amounts in millions)Amount 
% of
total loans
 Amount 
% of
total loans
Amount 
% of
total loans
 Amount 
% of
total loans
Commercial:              
Commercial and industrial$14,041
 31.8% $13,452
 31.5%$14,134
 31% $14,003
 31%
Leasing343
 0.8
 423
 1.0
358
 1
 364
 1
Owner-occupied7,082
 16.0
 6,962
 16.3
7,365
 16
 7,288
 16
Municipal1,073
 2.4
 778
 1.8
1,388
 3
 1,271
 3
Total commercial22,539
 51.0
 21,615
 50.6
23,245
 51
 22,926
 51
Commercial real estate:              
Construction and land development2,170
 4.9
 2,019
 4.7
2,202
 5
 2,021
 5
Term8,944
 20.3
 9,322
 21.9
8,771
 20
 9,103
 20
Total commercial real estate11,114
 25.2
 11,341
 26.6
10,973
 25
 11,124
 25
Consumer:              
Home equity credit line2,745
 6.2
 2,645
 6.2
2,825
 6
 2,777
 6
1-4 family residential6,522
 14.8
 5,891
 13.8
6,861
 15
 6,662
 15
Construction and other consumer real estate558
 1.3
 486
 1.2
661
 2
 597
 1
Bankcard and other revolving plans490
 1.1
 481
 1.1
490
 1
 509
 1
Other188
 0.4
 190
 0.5
175
 
 185
 1
Total consumer10,503
 23.8
 9,693
 22.8
11,012
 24
 10,730
 24
Total net loans$44,156
 100.0% $42,649
 100.0%$45,230
 100% $44,780
 100%
Loan portfolio growth during the first ninesix months of 20172018 was widespread across loan products and geographies with particular strength in consumermunicipal, 1-4 family residential, and commercial and industrial, and owner-occupied loans. The impact of these increases was partially offset by a decrease in ourthe CRE term portfolio.
Commercial owner-occupied loans also increased during the first ninesix months of 2017;2018; however, we experienced continued runoff and attrition of the National Real Estate portfolio. The National Real Estate business is a wholesale business that depends on loan referrals from other community banking institutions. Due to generally soft loan demand nationally, many community banking institutions are retaining, rather than selling, their loan production.
Other Noninterest-Bearing Investments
During the first ninesix months of 2017,2018, the Company increased its short-term borrowings with the Federal Home Loan Bank (“FHLB”)FHLB by $2.8 billion.$50 million. This increase required a further investment in FHLB activity stock, which consequently increased by $110 $31

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million during the year. Aside from this increase, other noninterest-bearing investments remained relatively stable as set forth in the following schedule.
OTHER NONINTEREST-BEARING INVESTMENTS
(In millions)September 30,
2017
 December 31,
2016
    
Bank-owned life insurance$504
 $497
Federal Home Loan Bank stock140
 30
Federal Reserve stock184
 181
Farmer Mac stock42
 34
Small Business Investment Company investments123
 124
Non-Small Business Investment Company investment funds12
 15
Other3
 3
 $1,008
 $884

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(In millions)June 30,
2018
 December 31,
2017
    
Bank-owned life insurance$513
 $506
Federal Home Loan Bank stock185
 154
Federal Reserve stock156
 184
Farmer Mac stock50
 43
SBIC investments136
 127
Non-SBIC investment funds11
 12
Other3
 3
  Total other noninterest-bearing investments$1,054
 $1,029
Premises, Equipment and Software
Net premises, equipment and software increased $63$5 million, or 6.2%0.5%, during the first ninesix months of 2017 primarily due2018. The Company continues to capitalized costs associated with the development of a new corporate facility for Amegy Bank in Texas, major software purchases, and the capitalization of eligiblecapitalize certain costs related to its technology initiatives, but associated depreciation has also increased following the developmentsuccessful implementation, in 2017, of newthe first phase of our core lending and deposit and reporting systems.systems replacement project.
Deposits
Deposits, both interest-bearing and noninterest-bearing, are a primary source of funding for the Company. Average total deposits for the first ninesix months of 20172018 increased by 4.2%0.3%, compared with the first ninesix months of 2016,2017, with average interest-bearing deposits increasing by 3.9%1.0% and average noninterest-bearing deposits increasingdecreasing by 7.4%0.5%. The increases in interest and noninterest-bearing deposits were driven by increases in both personal and business customer balances. The ending interest-bearing deposits balance at September 30, 2017 decreased by 0.4% to $28.1 billion from $28.2 billion at June 30, 2017. The decrease in ending balance is mainly due to the natural daily volatility of deposits and certain customers sweeping funds off of our balance sheet to take advantage of higher rates in the capital markets. The average interest rate paid for interest-bearing deposits was 315 bps higher during the first ninesix months of 2017,2018, compared with the first ninesix months of 2016.
Deposits at September 30, 2017, excluding time deposits $100,000 and over and brokered deposits, decreased slightly to $50.4 billion from $51.4 billion at December 31, 2016. The decrease was mainly due to a decrease in interest-bearing domestic savings and money market deposits.2017.
Demand and savings and money market deposits were 94.4%93% and 94.8%94% of total deposits at SeptemberJune 30, 20172018 and December 31, 2016,2017, respectively. At SeptemberJune 30, 20172018 and December 31, 2016,2017, total deposits included $1.3$2.3 billion and $0.9$1.6 billion, respectively, of brokered deposits.
See “Liquidity Risk Management” on page 3429 for additional information on funding and borrowed funds.
RISK ELEMENTS
Since risk is inherent in substantially all of the Company’s operations, management of risk is an integral part of its operations and is also a key determinant of its overall performance. The Board of Directors has appointed a Risk Oversight Committee (“ROC”) that consists of appointed Board members who oversee the Company’s risk management processes. The ROC meets on a regular basis to monitor and review Enterprise Risk Management (“ERM”) activities. As required by its charter, the ROC performs oversight for various ERM activities and approves ERM policies and activities as detailed in the ROC charter.
Management applies various strategies to reduce the risks to which the Company’s operations are exposed, including credit, interest rate and market, liquidity, and operational risks. These risks are overseen by the various management committees of which the Enterprise Risk Management Committee (“ERMC”) is the focal point for the monitoring and review of enterprise risk.
Credit Risk Management
Credit risk is the possibility of loss from the failure of a borrower, guarantor, or another obligor to fully perform under the terms of a credit-related contract. Credit risk arises primarily from our lending activities, as well as from off-balance sheet credit instruments.
The Board For a more comprehensive discussion of Directors, through the ROC, is responsible for approving the overall credit policies relating to the management of the credit risk of the Company. In addition, the ROC oversees and monitors adherence to key credit policies and the credit risk appetite as definedmanagement, see “Credit Risk Management” in the Risk Appetite Framework. Additionally, the Board has established the Credit Administration Committee, chaired by the Chief Credit Officer and consisting of members of management, to which it has delegated the responsibility for managing credit risk for the Company and approving changes to the Company’s credit policies.our 2017 Annual Report on Form 10-K.

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Centralized oversight of credit risk is provided through credit policies, credit risk management, and credit examination functions. Our credit polices place emphasis on strong underwriting standards and early detection of potential problem credits in order to develop and implement action plans on a timely basis to mitigate any potential losses. These formal credit policies and procedures provide the Company with a framework for consistent underwriting and a basis for sound credit decisions at the local banking affiliate level.
Our credit risk management function is separate from the lending function and strengthens control over, and the independent evaluation of, credit activities. In addition, we have a well-defined set of standards for regularly evaluating our loan portfolio, and we utilize a comprehensive loan risk-grading system to determine the risk potential in the portfolio. Furthermore, the internal credit examination department, which is independent of the lending function, periodically conducts examinations of the Company’s lending departments and credit activities. These examinations are designed to review credit quality, adequacy of documentation, appropriate loan risk-grading administration, and compliance with credit policies. New, expanded, or modified products and services, as well as new lines of business, are approved by the New Initiative Review Committee.
Our credit risk management strategy includes diversification of our loan portfolio. We attempt to avoid the risk of an undue concentration of credits in a particular collateral type or with an individual customer or counterparty. Generally, our loan portfolio is well diversified; however, due to the nature of our geographical footprint, there are certain significant concentrations, primarily in CRE and oil and gas-related lending. We have adopted and adhere to concentration limits on leveraged lending, municipal lending, oil and gas-related lending, and various types of CRE lending, particularly construction and land development lending. All of these limits are continually monitored and revised as necessary. The recent growth in construction and land development loan commitments is within the established concentration limits. Our business activity is primarily with customers located within the geographical footprint of our banking affiliates.
As we continue to monitor our concentration risk, the composition of our loan portfolio has slightly changed. Oil and gas-related loans represented 4.6% of the total loan portfolio at September 30, 2017, compared with 5.1% at December 31, 2016. Total commercial and CRE loans were 51.0% and 25.2% of the total portfolio at September 30, 2017, compared with 50.6% and 26.6%, at December 31, 2016, respectively. Consumer loans have grown to represent 23.8% of the total loan portfolio at September 30, 2017, compared with 22.8% at December 31, 2016.
Government Agency Guaranteed Loans
We participate in various guaranteed lending programs sponsored by U.S. government agencies, such as the SBA, Federal Housing Authority, Veterans’ Administration, Export-Import Bank of the U.S., and the U.S. Department of Agriculture. As of SeptemberJune 30, 2017,2018, the principal balance of these loans was $533$570 million, and the guaranteed portion of these loans was $403$433 million. Most of these loans were guaranteed by the SBA.
The following schedule presents the composition of government agency guaranteed loans.
GOVERNMENT GUARANTEES
(Dollar amounts in millions)September 30, 2017 Percent
guaranteed
 December 31, 2016 Percent
guaranteed
June 30,
2018
 Percent
guaranteed
 December 31, 2017 Percent
guaranteed
              
Commercial$502
 75% $519
 75%$547
 76% $507
 75%
Commercial real estate15
 74
 18
 75
14
 79
 14
 75
Consumer16
 92
 17
 92
9
 100
 16
 92
Total loans$533
 76
 $554
 76
$570
 76
 $537
 76
Commercial Lending
The following schedule provides selected information regarding lending concentrations to certain industries in our commercial lending portfolio.

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COMMERCIAL LENDING BY INDUSTRY GROUP
September 30, 2017 December 31, 2016June 30, 2018 December 31, 2017
(Dollar amounts in millions)Amount Percent Amount PercentAmount Percent Amount Percent
              
Real estate, rental and leasing$2,726
 12.1% $2,624
 12.1%$2,637
 11% $2,807
 12%
Retail trade 1
2,269
 10.0
 2,145
 9.9
2,376
 10
 2,257
 10
Manufacturing2,158
 9.6
 2,161
 10.0
2,217
 9
 2,116
 9
Finance and insurance1,758
 7.8
 1,462
 6.8
1,848
 8
 2,026
 9
Wholesale trade1,456
 6.5
 1,444
 6.7
1,630
 7
 1,543
 7
Healthcare and social assistance1,444
 6.4
 1,538
 7.1
1,581
 7
 1,556
 7
Transportation and warehousing1,341
 6.0
 1,300
 6.0
1,308
 6
 1,343
 6
Mining, quarrying and oil and gas extraction1,270
 5.6
 1,403
 6.5
Construction1,111
 4.9
 1,076
 5.0
1,201
 5
 1,094
 5
Accommodation and food services973
 4.3
 925
 4.3
Other Services (except Public Administration)939
 4.2
 881
 4.1
Mining, quarrying, and oil and gas extraction1,105
 5
 1,010
 4
Hospitality and food services947

4
 932
 4
Utilities 2
885
 3.9
 783
 3.6
938
 4
 905
 4
Professional, scientific, and technical services859
 3.8
 875
 4.0
882
 4
 879
 4
Other Services (except Public Administration)881
 4
 896
 4
Other 3
3,350
 14.9
 2,998
 13.9
3,694
 16
 3,562
 15
Total$22,539
 100.0% $21,615
 100.0%$23,245
 100% $22,926
 100%
1 
At SeptemberJune 30, 2017, 82%2018, 83% of retail trade consist of motor vehicle and parts dealers, gas stations, grocery stores, building material suppliers, and direct-to-consumer retailers. For additional detail on our CRE retail exposure, see the Commercial Real Estate Loans section on page 25.
2 
Includes primarily utilities, power, and renewable energy.
3 
No other industry group exceeds 3.5%.
Oil and Gas-Related Exposure
Various industries represented in the previous schedule, including mining, quarrying and oil and gas extraction, manufacturing, and transportation and warehousing, contain certain loans we categorize as oil and gas-related. At September 30, 2017 and December 31, 2016, we had approximately $3.8 billion and $3.9 billion, respectively, of total oil and gas-related credit exposure. The distribution of oil and gas-related loans by customer market segment is shown in the following schedule:

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OIL AND GAS-RELATED EXPOSURE 1
       3Q17 - 4Q16 3Q17 - 3Q16
(Dollar amounts in millions)September 30,
2017
 December 31,
2016
 September 30,
2016
 $ % $ %
Loans and leases  

          
Upstream – exploration and production$784
 $733
 $752
 $51
 7 % $32
 4 %
Midstream – marketing and transportation601
 598
 623
 3
 1
 (22) (4)
Downstream – refining100
 137
 123
 (37) (27) (23) (19)
Other non-services40
 38
 44
 2
 5
 (4) (9)
Oilfield services412
 500
 596
 (88) (18) (184) (31)
Oil and gas service manufacturing109
 152
 176
 (43) (28) (67) (38)
Total loan and lease balances 2
2,046
 2,158
 2,314
 (112) (5) (268) (12)
Unfunded lending commitments1,799
 1,722
 1,784
 77
 4
 15
 1
Total oil and gas credit exposure$3,845
 $3,880
 $4,098
 $(35) (1) $(253) (6)
Private equity investments$4
 $7
 $6
 $(3) (43) $(2) (33)
Credit quality measures 2
             
Criticized loan ratio29.8% 37.8% 41.8%        
Classified loan ratio24.0% 31.6% 33.1%        
Nonaccrual loan ratio10.2% 13.6% 15.0%        
Ratio of nonaccrual loans that are current67.9% 86.1% 87.3%        
Net charge-off ratio, annualized 3
1.2% 3.0% 7.1%        
1
Because many borrowers operate in multiple businesses, judgment has been applied in characterizing a borrower as oil and gas-related, including a particular segment of oil and gas-related activity, e.g., upstream or downstream; typically, 50% of revenues coming from the oil and gas sector is used as a guide.
2 Total loan and lease balances and the credit quality measures do not include oil and gas loans held for sale at period end.
3
Calculated as the ratio of annualized net charge-offs to the beginning loan balances for each respective period.
During the third quarter of 2017, our overall balance of oil and gas-related loans decreased by $112 million, or 5.2%, from year-end 2016, and decreased by $268 million, or 11.6%, from the third quarter of 2016. Oil and gas-related loans represented 4.6% of the total loan portfolio at September 30, 2017, compared with 5.1% at December 31, 2016 and 5.4% at September 30, 2016. Unfunded oil and gas-related lending commitments increased by $77 million, or 4.5% during the third quarter of 2017, from year-end 2016, and increased by $15 million, or 0.8%, from the third quarter of 2016. The increase in unfunded oil and gas-related lending commitments was primarily in the midstream portfolio.
Classified oil and gas-related credits decreased to $492 million at September 30, 2017, from $681 million at December 31, 2016. Oil and gas-related loan net charge-offs were $6 million in the third quarter of 2017, predominantly in the oil and gas services portfolio, compared with $16 million in the fourth quarter of 2016 and $41 million in the third quarter of 2016.
Nonaccruing oil and gas-related loans decreased by $85 million from the fourth quarter of 2016, primarily in the oil and gas services portfolio. Approximately 68% of oil and gas-related nonaccruing loans were current as to principal and interest payments at September 30, 2017, which declined from 86% at December 31, 2016.
Risk Management of the Oil and Gas-Related Portfolio
The oil and gas-related portfolio is comprised of three primary segments: upstream, midstream, and oil and gas services. Upstream exploration and production loan borrowers have relatively balanced production between oil and gas. Midstream loans are made to companies that gather, transport, treat and blend oil and natural gas, or that provide services to similar companies. Oil and gas services loans, which include oilfield services and oil and gas service manufacturing, include borrowers that have a concentration of revenues in the oil and gas industry. However, many of these borrowers provide a broad range of products and services to the oil and gas industry and

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are diversified geographically. For a more comprehensive discussion of these segments, refer to our 2016 Annual Report on Form 10-K.
We apply concentration limits and disciplined underwriting to the entire oil and gas-related loan portfolio to limit our risk exposure. As an indicator of the diversity in the size of our oil and gas-related portfolio, the average amount of our commitments is approximately $6 million, with approximately 68% of the commitments less than $30 million. Additionally, there are instances where we have commitments to companies with a common sponsor, which, if combined, would result in higher commitment levels than $30 million. The portfolio contains only senior loans – no junior or second lien positions; additionally, we cautiously approach making first-lien loans to borrowers that employ excessive leverage through the use of junior lien loans or unsecured layers of debt. Approximately 87% of the total oil and gas-related portfolio is secured by reserves, equipment, real estate, and other collateral, or a combination of collateral types.
We participate as a lender in loans and commitments designated as Shared National Credits (“SNCs”), which generally consist of larger and more diversified borrowers that have better access to capital markets. SNCs are loans or loan commitments of at least $20 million that are shared by three or more federally supervised institutions. The percentage of SNCs is 80% of the upstream portfolio, 80% of the midstream portfolio, and 46% of the oil and gas services portfolio. Our bankers have direct access and contact with the management of these SNC borrowers, and as such, are active participants. In many cases, we provide ancillary banking services to these borrowers, further evidencing this direct relationship. The results of the recent SNC exam are reflected in our financial statements.
As a secondary source of support, many of our oil and gas-related borrowers have access to capital markets and private equity sources. Private sponsors tend to be large funds, often with assets under management of more than $1 billion, managed by individuals with a great deal of oil and gas expertise and experience and who have successfully managed investments through previous oil and gas price cycles. The investors in the funds are primarily institutional investors, such as large pensions, foundations, trusts, and high net worth family offices.
When establishing the level of the ACL, we consider multiple factors, including reduced drilling activity and additional capital raises by borrowers and their sponsors. The ACL related to the oil and gas portfolio remains above 7% for the third quarter of 2017.

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Commercial Real Estate Loans
Selected information indicative of credit quality regarding our CRE loan portfolio is presented in the following schedule.
COMMERCIAL REAL ESTATE PORTFOLIO BY LOAN TYPE AND COLLATERAL LOCATION
(Dollar amounts in millions)(Dollar amounts in millions) Collateral Location    (Dollar amounts in millions) Collateral Location    
Loan type 
As of
date
 Arizona California Colorado Nevada Texas 
Utah/
Idaho
 Wash-ington 
Other 1
 Total 
% of 
total
CRE
 
As of
date
 Arizona California Colorado Nevada Texas 
Utah/
Idaho
 Wash-ington 
Other 1
 Total 
% of 
total
CRE
Commercial term                                        
Balance outstanding 9/30/2017 $1,042
 $2,987
 $430
 $567
 $1,642
 $1,325
 $419
 $532
 $8,944
 80.5% 6/30/2018 $1,072
 $2,811
 $508
 $542
 $1,483
 $1,388
 $444
 $523
 $8,771
 79.9%
% of loan type 11.7% 33.4% 4.8% 6.3% 18.4% 14.8% 4.7% 5.9% 100.0%   12.2% 32.0% 5.8% 6.2% 16.9% 15.8% 5.1% 6.0% 100.0%  
Delinquency rates 2:
                                        
30-89 days 9/30/2017 0.1% % % 0.2% 0.1% 0.1% % 0.6% 0.1%   6/30/2018 2.4% 0.1% 0.2% % 0.1% 0.1% 0.2% 0.4% 0.4%  
 12/31/2016 0.1% % % 0.7% % 0.1% 0.1% 0.1% 0.1%   12/31/2017 0.2% 0.1% 0.1% 0.2% % 0.2% % 0.8% 0.1%  
≥ 90 days 9/30/2017 0.2% 0.1% % % 0.1% 0.1% 0.2% 0.5% 0.1%   6/30/2018 % 0.1% % % 0.2% 0.1% % 0.2% 0.1%  
 12/31/2016 0.2% 0.4% % % % 0.1% % 1.2% 0.2%   12/31/2017 0.2% 0.1% 0.1% % % 0.1% % 0.7% 0.1%  
Accruing loans past due 90 days or more 9/30/2017 $
 $2
 $
 $
 $
 $
 $
 $
 $2
   6/30/2018 $
 $1
 $
 $
 $
 $
 $
 $
 $1
  
 12/31/2016 
 10
 
 
 
 2
 
 
 12
   12/31/2017 1
 1
 
 
 
 
 
 
 2
  
Nonaccrual loans 9/30/2017 $7
 $8
 $1
 $3
 $17
 $1
 $1
 $3
 $41
   6/30/2018 $3
 $10
 $
 $
 $18
 $2
 $
 $20
 $53
  
 12/31/2016 8
 11
 
 2
 1
 
 7
 
 29
   12/31/2017 4
 7
 1
 2
 17
 1
 4
 
 36
  
Residential construction and land developmentResidential construction and land development                Residential construction and land development                
Balance outstanding 9/30/2017 $30
 $286
 $54
 $4
 $225
 $36
 $5
 $5
 $645
 5.8% 6/30/2018 $44
 $293
 $54
 $3
 $200
 $34
 $2
 $7
 $637
 5.8%
% of loan type 4.6% 44.3% 8.4% 0.6% 34.9% 5.6% 0.8% 0.8% 100.0%   6.9% 46.0% 8.5% 0.5% 31.4% 5.3% 0.3% 1.1% 100.0%  
Delinquency rates 2:
                                        
30-89 days 9/30/2017 % 0.1% % % 1.6% % % % 0.6%   6/30/2018 % % % % % % % % %  
 12/31/2016 1.8% % % % 0.3% % % % 0.2%   12/31/2017 % % 0.2% % 0.7% % % % 0.2%  
≥ 90 days 9/30/2017 % % % % 0.6% % % % 0.2%   6/30/2018 % % % % % % % % %  
 12/31/2016 % % % % % % % % %   12/31/2017 % % % % 0.1% % % % %  
Accruing loans past due 90 days or more 9/30/2017 $
 $
 $
 $
 $1
 $
 $
 $
 $1
   6/30/2018 $
 $
 $
 $
 $
 $
 $
 $
 $
  
 12/31/2016 
 
 
 
 
 
 
 
 
   12/31/2017 
 
 
 
 
 
 
 
 
  
Nonaccrual loans 9/30/2017 $
 $
 $
 $
 $
 $
 $
 $
 $
   6/30/2018 $
 $
 $
 $
 $
 $
 $
 $
 $
  
 12/31/2016 
 
 
 
 
 
 
 
 
   12/31/2017 
 
 
 
 
 
 
 
 
  
Commercial construction and land developmentCommercial construction and land development                Commercial construction and land development                
Balance outstanding 9/30/2017 $116
 $315
 $108
 $94
 $486
 $260
 $102
 $44
 $1,525
 13.7% 6/30/2018 $176
 $324
 $46
 $89
 $427
 $336
 $121
 $46
 $1,565
 14.3%
% of loan type 7.6% 20.6% 7.1% 6.2% 31.9% 17.0% 6.7% 2.9% 100.0%   11.3% 20.7% 2.9% 5.7% 27.3% 21.5% 7.7% 2.9% 100.0%  
Delinquency rates 2:
                                        
30-89 days 9/30/2017 % 0.8% % % % % % % 0.2%   6/30/2018 % % % % 0.2% % % % 0.1%  
 12/31/2016 % % % 0.9% % 2.5% % % 0.5%   12/31/2017 0.1% 0.2% % % 0.2% 0.1% % % 0.1%  
≥ 90 days 9/30/2017 % % % % % 1.9% % % 0.3%   6/30/2018 % % % % 0.2% 1.2% % % 0.3%  
 12/31/2016 % % % % 0.4% % % % 0.2%   12/31/2017 % % % % % 1.3% % % 0.3%  
Accruing loans past due 90 days or more 9/30/2017 $
 $
 $
 $
 $
 $
 $
 $
 $
   6/30/2018 $
 $
 $
 $
 $
 $
 $
 $
 $
  
 12/31/2016 
 
 
 
 
 
 
 
 
   12/31/2017 
 
 
 
 
 
 
 
 
  
Nonaccrual loans 9/30/2017 $
 $
 $
 $
 $
 $5
 $
 $
 $5
   6/30/2018 $
 $
 $
 $
 $1
 $4
 $
 $
 $5
  
 12/31/2016 
 
 
 
 2
 5
 
 
 7
   12/31/2017 
 
 
 
 
 4
 
 
 4
  
Total construction and land development 9/30/2017 $146

$601

$162

$98

$711

$296

$107

$49
 $2,170
   6/30/2018 $220

$617

$100

$92

$627

$370

$123

$53
 $2,202
  
Total commercial real estate 9/30/2017 $1,188

$3,588

$592

$665

$2,353

$1,621

$526

$581
 $11,114
 100.0% 6/30/2018 $1,292

$3,428

$608

$634

$2,110

$1,758

$567

$576
 $10,973
 100.0%
1 
No other geography exceeds $67$90 million for all three loan types.
2 
Delinquency rates include nonaccrual loans.
Approximately 21%17% of the CRE term loans consist of mini-perm loans as of SeptemberJune 30, 2017.2018. For such loans, construction has been completed and the project has stabilized to a level that supports the granting of a mini-perm loan in accordance with our underwriting standards. Mini-perm loans generally have initial maturities of three to

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seven years. The remaining 79%83% of CRE loans are term loans with initial maturities generally of 5 to 20 years. The stabilization criteria for a project to qualify for a term loan differ by product type and include criteria related to the cash flow generated by the project, loan-to-value ratio, and occupancy rates.
Approximately $134$169 million, or 9%11%, of the commercial construction and land development portfolio at SeptemberJune 30, 20172018 consists of acquisition and development loans. Most of these acquisition and development loans are secured by specific retail, apartment, office, or other projects.
OfFor a more comprehensive discussion of commercial real estate loans, see the total CRE loan portfolio we categorize $1.9 billion as retail property. At September 30, 2017, approximately $339 million, or 18%, of the retail CRE loans are secured by regional shopping centers.
Underwriting on commercial properties is primarily based on the economic viability of the project with heavy consideration given to the creditworthiness and experience of the sponsor. We generally require that the owner’s equity be injected prior to bank advances. Remargining requirements (required equity infusions upon a decline in value or cash flow of the collateral) are often included in the loan agreement along with guarantees of the sponsor. Recognizing that debt is paid via cash flow, the projected cash flows of the project are critical in the underwriting because these determine the ultimate value of the property and its ability to service debt. Therefore, in most projects (with the exception of multifamily and hospitality construction projects), we require substantial pre-leasing/leasing“Commercial Real Estate Loans” section in our underwriting and we generally require a minimum projected stabilized debt service coverage ratio of 1.20 or higher, depending2017 Annual Report on the project asset class.
Within the residential construction and development sector, many of the requirements previously mentioned, such as creditworthiness and experience of the developer, up-front injection of the developer’s equity, principal curtailment requirements, and the viability of the project are also important in underwriting a residential development loan. Significant consideration is given to the forecasted market acceptance of the product, location, strength of the developer, and the ability of the developer to stay within budget. Progress inspections by qualified independent inspectors are routinely performed before disbursements are made.
Real estate appraisals are ordered in accordance with regulatory guidelines and are validated independent of the loan officer and the borrower, generally by our internal appraisal review function, which is staffed by licensed appraisers. In some cases, reports from automated valuation services are used or internal evaluations are performed. A new appraisal or evaluation is required when a loan deteriorates to a certain level of credit weakness.
Advance rates (i.e., loan commitments) will vary based on the viability of the project and the creditworthiness of the sponsor, but our guidelines generally limit advances to 50% for raw land, 65% for land development, 65% for finished commercial lots, 75% for finished residential lots, 80% for pre-sold homes, 75% for models and homes not under contract, and 75% for commercial properties. Exceptions may be granted on a case-by-case basis.
Loan agreements require regular financial information on the project and the sponsor in addition to lease schedules, rent rolls and, on construction projects, independent progress inspection reports. The receipt of this financial information is monitored and calculations are made to determine adherence to the covenants set forth in the loan agreement.
The existence of a guarantee that improves the likelihood of repayment is taken into consideration when analyzing CRE loans for impairment. If the support of the guarantor is quantifiable and documented, it is included in the potential cash flows and liquidity available for debt repayment, and our impairment methodology takes this repayment source into consideration.
When we modify or extend a loan, we also give consideration to whether the borrower is in financial difficulty, and whether we have granted a concession. In determining if an interest rate concession has been granted, we consider whether the interest rate on the modified loan is equivalent to current market rates for new debt with similar risk characteristics. If the rate in the modification is less than current market rates, it may indicate that a concession was granted and impairment exists. However, if additional collateral is obtained, or if a guarantor exists who has

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capacity and willingness to support the loan on an extended basis, we also consider the nature and amount of the additional collateral and guarantees in the ultimate determination of whether a concession has been granted.
In general, we obtain and consider updated financial information for the guarantor as part of our determination to extend a loan. The quality and frequency of financial reporting collected and analyzed varies depending on the contractual requirements for reporting, the size of the transaction, and the strength of the guarantor.
Complete underwriting of the guarantor includes, but is not limited to, an analysis of the guarantor’s current financial statements, leverage, liquidity, global cash flow, global debt service coverage, contingent liabilities, etc. The assessment also includes a qualitative analysis of the guarantor’s willingness to perform in the event of a problem and demonstrated history of performing in similar situations. Additional analysis may include personal financial statements, tax returns, liquidity (brokerage) confirmations, and other reports, as appropriate.
A qualitative assessment is performed on a case-by-case basis to evaluate the guarantor’s experience, performance track record, reputation, and willingness to work with us. We also utilize market information sources, rating, and scoring services in our assessment. This qualitative analysis coupled with a documented quantitative ability to support the loan may result in a higher-quality internal loan grade, which may reduce the level of allowance we estimate. Previous documentation of the guarantor’s financial ability to support the loan is discounted if there is any indication of a lack of willingness by the guarantor to support the loan.
In the event of default, we evaluate the pursuit of any and all appropriate potential sources of repayment, which may come from multiple sources, including the guarantee. A number of factors are considered when deciding whether or not to pursue a guarantor, including, but not limited to, the value and liquidity of other sources of repayment (collateral), the financial strength and liquidity of the guarantor, possible statutory limitations (e.g., single action rule on real estate) and the overall cost of pursuing a guarantee compared with the ultimate amount we may be able to recover. In other instances, the guarantor may voluntarily support a loan without any formal pursuit of remedies.
A decrease in oil and gas prices could potentially produce an adverse impact on our CRE loan portfolio within Texas. However, based upon generally strong equity and cash flow coverage levels, and sponsor support for the various properties, we do not expect a material amount of losses within this portfolio for the remainder of 2017. Our largest CRE credit exposures in Texas are to the multi-family, office, and retail sectors. As of September 30, 2017, the CRE loan portfolio mix in Texas is 68% commercial term, 19% commercial construction, 10% residential construction, and 3% land development.Form 10-K.
Consumer Loans
We have mainly been an originator of first and second mortgages, generally considered to be of prime quality. We generally hold variable-rate loans in our portfolio and sell “conforming” fixed-rate loans to third parties, including Federal National Mortgage Association and Federal Home Loan Mortgage Corporation, for which we make representations and warranties that the loans meet certain underwriting and collateral documentation standards.
We are engaged in Home Equity Credit Line (“HECL”) lending. At Septemberboth June 30, 2018 and December 31, 2017, our HECL portfolio totaled $2.7 billion, compared with $2.6 billion at December 31, 2016.$2.8 billion. The following schedule describes the composition of our HECL portfolio by lien status.
HECL PORTFOLIO BY LIEN STATUS
(In millions)September 30, 2017 December 31, 2016June 30, 2018 December 31, 2017
      
Secured by first deeds of trust$1,396
 $1,383
$1,429
 $1,406
Secured by second (or junior) liens1,349
 1,262
1,396
 1,371
Total$2,745
 $2,645
$2,825
 $2,777
At SeptemberJune 30, 2017,2018, loans representing approximatelyless than 1% of the outstanding balance in the HECL portfolio were estimated to have combined loan-to-value ratios (“CLTV”) above 100%. An estimated CLTV ratio is the ratio of our loan plus any prior lien amounts divided by the estimated current collateral value. At origination,

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underwriting standards for the HECL portfolio generally include a maximum 80% CLTV with high credit scores at origination.
Approximately 91%92% of our HECL portfolio is still in the draw period, and approximately 24%25% of those loans are scheduled to begin amortizing within the next five years. We regularly analyze the risk of borrower default in the event of a loan becoming fully amortizing and the risk of higher interest rates. The analysis indicates that the risk of loss from this factor is minimal in the current economic environment. The ratio of net charge-offs to average balances for the first ninesix months of 20172018 and 20162017 for the HECL portfolio was (0.01)%0.16% and 0.02%(0.02)%, respectively. See Note 6 of the Notes to Consolidated Financial Statements for additional information on the credit quality of this portfolio.
Nonperforming Assets
Nonperforming assets as a percentage of loans and leases and other real estate owned (“OREO”) decreased to 1.06%0.77% at SeptemberJune 30, 2017,2018, compared with 1.34%0.93% at December 31, 2016.2017.
Total nonaccrual loans at SeptemberJune 30, 20172018 decreased $104$72 million from December 31, 2016,2017, primarily in the commercial and industrial loan portfolio. However, nonaccrual loans slightly increased in the commercial owner-occupied and commercial real estate term loan portfolios. The largest total decrease in nonaccrual loans occurred at Amegy.Amegy Bank (“Amegy”).
The balance of nonaccrual loans can decrease due to paydowns, charge-offs, and the return of loans to accrual status under certain conditions. If a nonaccrual loan is refinanced or restructured, the new note is immediately placed on nonaccrual. If a restructured loan performs under the new terms for at least a period of six months, the loan can be considered for return to accrual status. See “Restructured Loans” following for more information. Company policy

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does not allow for the conversion of nonaccrual construction and land development loans to CRE term loans. See Note 6 of the Notes to Consolidated Financial Statements for more information on nonaccrual loans.
The following schedule sets forth our nonperforming assets:
NONPERFORMING ASSETS
(Dollar amounts in millions)September 30,
2017
 December 31,
2016
June 30,
2018
 December 31,
2017
      
Nonaccrual loans 1
$465
 $569
$342
 $414
Other real estate owned3
 4
5
 4
Total nonperforming assets$468
 $573
$347
 $418
Ratio of nonperforming assets to net loans and leases1 and other real estate owned
1.06% 1.34%0.77% 0.93%
Accruing loans past due 90 days or more$30
 $36
$5
 $22
Ratio of accruing loans past due 90 days or more to loans and leases1
0.07% 0.08%0.01% 0.05%
Nonaccrual loans and accruing loans past due 90 days or more$495
 $605
$347
 $436
Ratio of nonaccrual loans and accruing loans past due 90 days or more to loans and leases1
1.12% 1.41%0.77% 0.97%
Accruing loans past due 30-89 days$99
 $126
$119
 $120
Nonaccrual loans1 current as to principal and interest payments
57% 74%63.8% 65.9%
1 Includes loans held for sale.
Restructured Loans
Troubled debt restructurings (“TDRs”) are loans that have been modified to accommodate a borrower who is experiencing financial difficulties, and for whom we have granted a concession that we would not otherwise consider. TDRs decreased $3$45 million, or 1.2%20%, during the first ninesix months of 2017.2018. Commercial loans may be modified to provide the borrower more time to complete the project, to achieve a higher lease-up percentage, to sell the property, or for other reasons. Consumer loan TDRs represent loan modifications in which a concession has been granted to the borrower who is unable to refinance the loan with another lender, or who is experiencing economic hardship. Such consumer loan TDRs may include first-lien residential mortgage loans and home equity loans.
If the restructured loan performs for at least six months according to the modified terms, and an analysis of the customer’s financial condition indicates that we are reasonably assured of repayment of the modified principal and interest, the loan may be returned to accrual status. The borrower’s payment performance prior to and following the restructuring is taken into account to determine whether a loan should be returned to accrual status.

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ACCRUING AND NONACCRUING TROUBLED DEBT RESTRUCTURED LOANS
(In millions)September 30,
2017
 December 31,
2016
June 30,
2018
 December 31,
2017
      
Restructured loans – accruing$133
 $151
$104
 $139
Restructured loans – nonaccruing115
 100
77
 87
Total$248
 $251
$181
 $226
In the periods following the calendar year in which a loan was restructured, a loan may no longer be reported as a TDR if it is on accrual, is in compliance with its modified terms, and yields a market rate (as determined and documented at the time of the modification or restructure). See Note 6 of the Notes to Consolidated Financial Statements for additional information regarding TDRs.

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TROUBLED DEBT RESTRUCTURED LOANS ROLLFORWARD
Three Months Ended
September 30,
 Nine Months Ended
September 30,
Three Months Ended
June 30,
 Six Months Ended
June 30,
(In millions)2017 2016 2017 20162018 2017 2018 2017
              
Balance at beginning of period$304
 $315
 $251
 $297
$229
 $298
 $226
 $251
New identified TDRs and principal increases7
 40
 163
 142
18
 70
 69
 156
Payments and payoffs(45) (35) (117) (107)(54) (49) (88) (72)
Charge-offs(4) (24) (17) (29)(2) (10) (3) (13)
No longer reported as TDRs
 
 (4) (7)(7) (3) (18) (4)
Sales and other(14) (1) (28) (1)(3) (2) (5) (14)
Balance at end of period$248
 $295
 $248
 $295
$181
 $304
 $181
 $304
Allowance for Credit Losses
In analyzing the adequacy of the ALLL, we utilize a comprehensive loan grading system to determine the risk potential in the portfolio and also consider the results of independent internal credit reviews. To determine the adequacy of the allowance, our loan and lease portfolio is broken into segments based on loan type.

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The following schedule shows the changes in the allowance for loan losses and a summary of loan loss experience:
SUMMARY OF LOAN LOSS EXPERIENCE
(Dollar amounts in millions)Nine Months Ended September 30, 2017 Twelve Months Ended December 31, 2016 Nine Months Ended September 30, 2016Six Months Ended June 30, 2018 Twelve Months Ended December 31, 2017 Six Months Ended June 30, 2017
          
Loans and leases outstanding (net of unearned income)$44,156
 $42,649
 $42,540
$45,230
 $44,780
 $43,683
Average loans and leases outstanding (net of unearned income)$43,218
 $42,062
 $41,868
$45,054
 $43,501
 $42,906
Allowance for loan losses:          
Balance at beginning of period$567
 $606
 $606
$518
 $567
 $567
Provision charged to earnings35
 93
 95
Provision for loan losses(35) 24
 30
Charge-offs:          
Commercial(98) (170) (138)30
 118
 82
Commercial real estate(6) (12) (10)
 9
 2
Consumer(13) (16) (11)9
 17
 7
Total(117) (198) (159)39
 144
 91
Recoveries:          
Commercial36
 43
 36
38
 46
 23
Commercial real estate12
 14
 12
5
 14
 11
Consumer8
 9
 7
3
 11
 4
Total56
 66
 55
46
 71
 38
Net loan and lease charge-offs(61) (132) (104)
Net loan and lease charge-offs (recoveries)(7) 73
 53
Balance at end of period$541
 $567
 $597
$490
 $518
 $544
Ratio of annualized net charge-offs to average loans and leases0.19% 0.31% 0.33%(0.03)% 0.17% 0.25%
Ratio of allowance for loan losses to net loans and leases, at period end1.23% 1.33% 1.40%1.08 % 1.16% 1.25%
Ratio of allowance for loan losses to nonaccrual loans, at period end120% 107% 103%143 % 129% 115%
Ratio of allowance for loan losses to nonaccrual loans and accruing loans past due 90 days or more, at period end112% 100% 98%141 % 122% 110%
The total ALLL decreased during the first ninesix months of 20172018 by $26$28 million as a result of credit quality improvements in the total loan portfolio.
The RULC represents a reserve for potential losses associated with off-balance-sheetoff-balance sheet commitments and standby letters of credit. The reserve is separately shown in the balance sheet and any related increases or decreases in the

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reserve are shown separately in the statement of income. At SeptemberJune 30, 2017,2018, the reserve decreased by $6 million compared withremained the same as at December 31, 2016, also as a result of credit quality improvements in the total loan portfolio,2017, and decreased by $3$5 million from SeptemberJune 30, 2016.2017.
See Note 6 of the Notes to Consolidated Financial Statements for additional information related to the ACL and credit trends experienced in each portfolio segment.
Interest Rate and Market Risk Management
Interest rate and market risk are managed centrally. Interest rate risk is the potential for reduced net interest income and other rate sensitive income resulting from adverse changes in the level of interest rates. Market risk is the potential for loss arising from adverse changes in the fair value of fixed income securities, equity securities, other earning assets, and derivative financial instruments as a result of changes in interest rates or other factors. As a financial institution that engages in transactions involving an array of financial products, we are exposed to both interest rate risk and market risk.
The Company’s Board of Directors is responsible for approving the overall policies relating to the management of the financial risk of the Company, including interest rate and market risk management. The Board has established the Asset/Liability Committee (“ALCO”) consisting of members of management, to which it has delegated the

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responsibility of managing interest rate and market risk for the Company. ALCO establishes and periodically revises policy limits and reviews with the ROC the limits and limit exceptions reported by management.
Interest Rate Risk
Interest rate risk is one of the most significant risks to which we are regularly exposed. In general, our goal in managing interest rate risk is to manage balance sheet sensitivity to reduce net income volatility due to changes in interest rates.
Over the course of the last year,several years, we have actively reduced the level of asset sensitivityasset-sensitivity through the purchase of short-to-medium duration agency pass-through securities and funding these purchases by reducing money market investments and increasing short-term borrowings. This repositioning of the investment portfolio has increased current net interest income while dampening the impact of higher rates on net interest income growth. We continue to anticipate moderately higher net interest income in a rising rate environment as our assets reprice more quickly than our liabilities.
As most of our liabilities are comprised of indeterminate maturity and managed rate deposits, behavioral assumptions for these deposits have a significant impact on our projected interest rate risk. We have historically reported two sets of deposit assumptions, fast and slow, to reflect the uncertainty of deposit behavior and its impact on interest rate risk. We have recently updated our deposit models and now disclose interest rate risk for only a single set of deposit behavioral assumptions. The newly implemented method differs from prior methods primarily in the way we treat commercial checking deposits and in the manner by which we determine the portion of deposits that are core deposits. For commercial checking deposits, we have separated the balances into a core amount that is operational or that compensates for billed services, and a complementary excess balance. The excess balance is modeled with a high attrition rate, whereas the core balance runs off more slowly. For other deposit types, the core balance is determined by the average balance over a longer-term horizon, typically 24 to 48 months, and excess balances are modeled with a high attrition rate.
Interest Rate Risk Measurement
We monitor interest rate risk through the use of two complementary measurement methods: net interest income simulation, or Earnings at Risk (“EaR”), and Economic Value of Equity at Risk (“EVE”). Earnings at RiskEaR analyzes the expected change in near term (one year) net interest income in response to changes in interest rates. In the EVE method, we measure the expected changes in the fair value of equity in response to changes in interest rates.
Earnings at RiskEaR is an estimate of the change in total net interest income that would be recognized under different rate environments. Earnings at Riskenvironments over a one-year period. EaR is measured assumingsimulating net interest income under several different scenarios including parallel and nonparallel interest rate shifts across the yield curve, taking into account deposit repricing assumptions and estimates of the possible exercise of embedded options within the portfolio (e.g., a borrower’s ability to refinance a loan under a lower ratelower-rate environment). Our policy contains a trigger for a 10% decline in rate sensitive income as well as a risk capacity of a 13% decline if rates were to immediately rise or fall in parallel by 200 bps.
EVE is calculated as the fair value of all assets minus the fair value of liabilities. We measure changes in the dollar amount of EVE for parallel shifts in interest rates. Due to embedded optionality and asymmetric rate risk, changes in EVE can be useful in quantifying risks not apparent for small rate changes. Examples of such risks may include out-of-the-money interest rate caps (or limits) on loans, which have little effect under small rate movements but may become important if large rate changes were to occur, or substantial prepayment deceleration for low-rate mortgages in a higher-rate environment. Our policy contains a trigger for an 8% decline in EVE as well as a risk capacity of a

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10% decline if rates were to immediately rise or fall in parallel by 200 bps. Exceptions to the EVE limits are subject to notification and approval by the ROC.
Estimating the impact on net interest income and EVE requires that we assess a number of variables and make various assumptions in managing our exposure to changes in interest rates. The assessments address deposit withdrawals and deposit product migration (e.g., customers moving money from checking accounts to certificates of deposit), competitive pricing (e.g., existing loans and deposits are assumed to roll into new loans and deposits at

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similar spreads relative to benchmark interest rates), loan and security prepayments, and the effects of other similar embedded options. As a result of uncertainty about the maturity and repricing characteristics of both deposits and loans, we also calculate the sensitivity of EaR and EVE results to key assumptions. TheAs most of our liabilities are comprised of indeterminate maturity and managed rate deposits, the modeled results are highly sensitive to the assumptions used for these deposits, that do not have specific maturities, such as checking, savings and money market accounts, and also to prepayment assumptions used for loans with prepayment options. We use historical regression analysis as a guide tofor setting such assumptions; however, due to the current low interest rate environment, which has little historical precedent, estimated deposit behavior may not reflect actual future results. Additionally, competition for funding in the marketplace has and may again result in changes to deposit pricing on interest-bearing accounts that are greater or less than changes in benchmark interest rates such as LIBORthe London Interbank Offered Rate (“LIBOR”) or the federal funds rate.
Under most rising interest rate environments, we would expect some customers to move balances from demand deposits to interest-bearing accounts such as money market, savings, or CDs.certificates of deposit. The models are particularly sensitive to the assumption about the rate of such migration.
In addition, we assume certain correlation rates, often referred to as a “deposit beta,” of interest-bearing deposits, wherein the rates paid to customers change at a different pace when compared towith changes in benchmark interest rates. Generally, certificates of deposit are assumed to have a high correlation rate, while interest-on-checking accounts are assumed to have a lower correlation rate. Actual results may differ materially due to factors including competitive pricing, money supply, credit worthiness of the Company, and so forth; however, we use our historical experience as well as industry data to inform our assumptions.
The aforementioned migration and correlation assumptions result in deposit durations presented in the following schedule.
DEPOSIT ASSUMPTIONS
 September 30, 2017
 New Deposit Method June 30, 2018
Product Effective duration (unchanged) Effective duration (+200 bps) Effective duration (unchanged) Effective duration (+200 bps)
        
Demand deposits 3.3% 3.3% 3.0% 3.0%
Money market 1.5% 1.3% 1.4% 1.2%
Savings and interest-on-checking 2.7% 2.4% 2.6% 2.3%
As of the dates indicated and incorporating the assumptions previously described, the following schedule shows EaR, or percentage change in net interest income, based on a static balance sheet size, in the first year after the interest rate change if interest rates were to sustain immediate parallel changes ranging from -100 bps to +300 bps.
EARNINGS AT RISKINCOME SIMULATION – CHANGE IN NET INTEREST INCOME
 September 30, 2017 June 30, 2018
 
Parallel shift in rates (in bps)1
 
Parallel shift in rates (in bps)1
Repricing scenario -100 0 +100 +200 +300 -100 0 +100 +200 +300
                    
Earnings at Risk (3.8)% % 2.9% 5.8% 8.5% (3.2)% % 3.0% 5.8% 8.6%
1 
Assumes rates cannot go below zero in the negative rate shift.

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For non-maturity interest bearinginterest-bearing deposits, the weighted average modeled beta is 36%. If the weighted average deposit beta increased to 46% it would decrease the EaR in the +200bp+200bps shock from 5.8% to 3.3%3.4%.
The EaR analysis focuses on parallel rate shocks across the term structure of rates. The yield curve typically does not move in a parallel manner. During the past year, an increase in short-term rates has led to a flatter yield curve as longer-term rates have not increased at the same pace as short-term rates. If we consider a flattening rate shock

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where the short-term rate moves +200bp+200bps but the ten-year rate only moves +30bp,+30bps, the increase in earnings is 31%43% lower over 12 months compared with the parallel +200bp+200bps rate shock.
For comparative purposes, the December 31, 20162017 measures asare presented in the following schedule have been recalculated using the new methodology.schedule.
 December 31, 2016 December 31, 2017
 
Parallel shift in rates (in bps)1
 
Parallel shift in rates (in bps)1
Repricing scenario -100 0 +100 +200 +300 -100 0 +100 +200 +300
                    
Earnings at Risk (4.9)% % 3.6% 7.6% 11.5% (2.7)% % 2.8% 5.4% 7.8%
1 
Assumes rates cannot go below zero in the negative rate shift.
The asset sensitivityasset-sensitivity as measured by EaR declinedincreased slightly quarter-over-quarter due to continued purchases of medium-term securities funded through reductionschanges in money market investments and increases in short-term borrowings.the deposit composition.
CHANGES IN ECONOMIC VALUE OF EQUITY
As of the dates indicated, and incorporating the assumptions previously described, the following schedule shows our estimated percentage change in EVE under parallel interest rate changes ranging from -100 bps to +300 bps. For non-maturity interest bearinginterest-bearing deposits, the weighted average modeled beta is 36%. If the weighted average deposit beta increased to 46% it would decrease the EVE in the +200bp+200bps shock from 1.1%-3.9% to -1.4%-6.0%.
 September 30, 2017 June 30, 2018
 
Parallel shift in rates (in bps)1
 
Parallel shift in rates (in bps)1
Repricing scenario -100 0 +100 +200 +300 -100 0 +100 +200 +300
                    
Economic Value of Equity 1.6% % 0.8% 1.1% 1.3% 0.8% % (2.2)% (3.9)% (5.5)%
1 
Assumes rates cannot go below zero in the negative rate shift.
For comparative purposes, the December 31, 20162017 measures asare presented in the following schedule have been recalculated using the new methodology.schedule. The changes in EVE measures are driven by a slight increase in the same factors as those in our income simulation.runoff assumption for noninterest-bearing deposits.
 December 31, 2016 December 31, 2017
 
Parallel shift in rates (in bps)1
 
Parallel shift in rates (in bps)1
Repricing scenario -100 bps 0 bps +100 bps +200 bps +300 bps -100 bps 0 bps +100 bps +200 bps +300 bps
                    
Economic Value of Equity 0.3% % 1.2% 2.9% 4.9% 0.2% % 0.5% 0.3% 0.2%
1 
Assumes rates cannot go below zero in the negative rate shift.
Our focus on business banking also plays a significant role in determining the nature of the Company’s asset-liability management posture. At SeptemberJune 30, 2017, $19.72018, $20 billion of the Company’s commercial lending and CRE loan balances were scheduled to reprice in the next six months. Of these variable-rate loans approximately 65%93% are tied to either the prime rate or LIBOR. For these variable-rate loans we have executed $1.1$1.0 billion of cash flow hedges by receiving fixed rates on interest rate swaps. Additionally, asset sensitivityasset-sensitivity is reduced due to $0.3 billion$87 million of variable-rate loans being priced at floored rates at SeptemberJune 30, 2017,2018, which were above the “index plus spread” rate by an average of 4550 bps. At SeptemberJune 30, 2017,2018, we also had $3.2$3.3 billion of variable-rate consumer loans scheduled to reprice in the next six months. Of these variable-rate consumer loans approximately $0.2 billion$19 million were priced at floored rates, which were above the “index plus spread” rate by an average of 3274 bps.
See Notes 3 and 7 of the Notes to Consolidated Financial Statements and Notes 7 and 20 of our 2016 Annual Report on Form 10-K for additional information regarding derivative instruments.

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Market Risk – Fixed Income
We engage in the underwriting and trading of municipal securities. This trading activity exposes us to a risk of loss arising from adverse changes in the prices of these fixed income securities.

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At SeptemberJune 30, 2017,2018, we had a relatively small amount, $56$207 million, of trading assets and $49$44 million of securities sold, not yet purchased, compared with $115$148 million and $25$95 million, respectively, at December 31, 2016.2017.
We are exposed to market risk through changes in fair value. We are also exposed to market risk for interest rate swaps used to hedge interest rate risk. Changes in the fair value of AFS securities and in interest rate swaps that qualify as cash flow hedges are included in accumulated other comprehensive income (“AOCI”) for each financial reporting period. During the thirdsecond quarter of 2017,2018, the after-tax change in AOCI attributable to AFS securities decreased by $47$50 million, due largely to changes in the interest rate environment, compared with a $11$61 million decreaseincrease in the same prior year period.
Market Risk – Equity Investments
Through our equity investment activities, we own equity securities that are publicly traded.publicly-traded. In addition, we own equity securities in companies and governmental entities, e.g., the Federal Reserve Bank and an FHLB, that are not publicly traded.publicly-traded. The accounting for equity investments may use the cost, fair value, equity, or full consolidation methods of accounting, depending on our ownership position and degree of involvement in influencing the investees’ affairs. Regardless of the accounting method, the value of our investment is subject to fluctuation. Because the fair value of these securities may fall below our investment costs, we are exposed to the possibility of loss. Equity investments in private and public companies are approved, monitored and evaluated by the Company’s Equity Investment Committee consisting of members of management.
We hold both direct and indirect investments in predominantly pre-public companies, primarily through various Small Business Investment Company (“SBIC”) venture capital funds. Our equity exposure to these investments was approximately $123$136 million and $124$127 million at SeptemberJune 30, 20172018 and December 31, 2016,2017, respectively. On occasion, some of the companies within our SBIC investments may issue an initial public offering. In this case, the fund is generally subject to a lockout period before liquidating the investment, which can introduce additional market risk. During the third quarter of 2017 we sold the remaining amount of our most significant publicly traded direct investment and as of September 30, 2017 we had an insignificant amount of publicly traded stocks as part of our direct SBIC investments.
Additionally, Amegy has an alternative investments portfolio. These investments are primarily directed towards equity buyout and mezzanine funds with a key strategy of deriving ancillary commercial banking business from the portfolio companies. Early stage venture capital funds are generally not a part of the strategy because the underlying companies are typically not creditworthy. The carrying value of Amegys equity investments was $11 million and $12 million at SeptemberJune 30, 20172018 and $13 million at December 31, 2016.2017, respectively.
These PEIsprivate equity investments (“PEIs”) are subject to the provisions of the Dodd-Frank Act. The Volcker Rule of the Dodd-Frank Act prohibits banks and bank holding companies from holding PEIs, except for SBIC funds and certain other permitted exclusions, beyond a required deadline. The Federal Reserve Board (“FRB”) announced in December 2016 that it would allow banks to apply for an additional five-year extension beyond the July 21, 2017 deadline to comply with the Dodd-Frank Act requirement for these investments. The Company applied for and was granted an extension for its eligible PEIs. All positions in the remaining portfolio of PEIs are subject to the extended deadline or other applicable exclusions.
As of SeptemberJune 30, 2017,2018, such prohibited PEIs amounted to $4$3 million, with an additional $4$3 million of unfunded commitments (see Note 5 of the Notes to Consolidated Financial Statements for more information). We currently do not believe that this divestiture requirement will ultimately have a material impact on our financial statements.
Liquidity Risk Management
Overview
Liquidity risk is the possibility that our cash flows may not be adequate to fund our ongoing operations and meet our commitments in a timely and cost-effective manner. Since liquidity risk is closely linked to both credit risk and market risk, many of the previously discussed risk control mechanisms also apply to the monitoring and management of liquidity risk. We manage our liquidity to provide adequate funds for our customers’ credit needs,

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our capital plan actions and our anticipated financial and contractual obligations which include withdrawals by depositors, debt and capital service requirements, and lease obligations.management of liquidity risk. The management of liquidity and funding is performed centrally for the Parent and jointly by the Parent and bank management for its subsidiary bank.
Overseeing liquidity management is the responsibility of ALCO, which implements a Board-approved corporate Liquidity and Funding Policy. This policy addresses monitoring and maintaining adequate liquidity, diversifying funding positions, and anticipating future funding needs. The policy also includes liquidity ratio guidelines, such as the “time-to-required funding” and LCR, that are used to monitor the liquidity positionsRegulation
Upon passage of the ParentEconomic Growth, Regulatory Relief, and ZB, N.A., as well as various stress test and liquid asset measurements for the Parent and ZB, N.A.
The Company has adopted policy limits that govern liquidity risk. The policy requiresConsumer Protection Act, the Company to maintain a buffer of highly liquid assets sufficient to cover cash outflows in the event of a severe liquidity crisis. The Company targets a buffer of highly liquid assets at the Parent to cover 18-24 months of cash outflows under a scenario with limited cash inflows, and maintains a minimum policy limit of not less than 12 months. Throughout the first nine months of 2017 and as of September 30, 2017, the Company complied with this policy. More information regarding the Company’s liquidity risk management process is contained in “Liquidity Risk Management” under “Overview” in our 2016 Annual Report on Form 10-K.
Liquidity Regulation
In September 2014, U.S. banking regulators issued a final rule that implements a quantitative liquidity requirement in the U.S. generally consistent with the LCR minimum liquidity measure established under the Basel III liquidity framework. Under this rule, we areno longer subject to a modified LCR standard, which requires a financial institution to hold an adequate amount of unencumbered High-Quality-Liquid Assets (“HQLA”) that can be converted into cash easily and immediately in private markets to meet its liquidity needs for a short-term liquidity stress scenario. This rule became applicable to us on January 1, 2016.
The Basel III liquidity framework includes a second minimum liquidity measure, the Net Stable Funding Ratio (“NSFR”), which requires a financial institution to maintain a stable funding profile over a one-year period in relation to the characteristics of its on- and off-balance sheet activities. On October 31, 2014, the Basel Committee on Banking Supervision issued its final standards for this ratio, entitled Basel III: The Net Stable Funding Ratio. On May 3, 2016, the FRB issued a proposal requiring bank holding companies with less than $250 billion of assets, but more than $50 billion of assets, to cover 70% of 1-year cash outflows under the assumptions required in the proposed NSFR Rule. Under the proposal, bank holding companies would be required to publicly disclose information about the NSFR levels each quarter. The proposal has an effective date of January 1, 2018. We continue to monitor this proposal and any other developments. Based on this Basel III publication and the FRB proposal, we believe we would meet the minimum NSFR if such requirement were currently effective.
The Enhanced Prudential Standards for liquidity management (Reg. YY) require us. However, the Company continues to conduct monthlyperform liquidity stress tests. These tests incorporate scenarios designed by us, require a bufferand assess its portfolio of highly liquid assets sufficient(sufficient to cover 30-day funding needs under the stress scenarios, and are subject to review by the FRB. The Company’s internal liquidity stress-testing program as contained in its policy complies with these requirements and includes monthly liquidity stress testing using a set of internally generated scenarios representing severe liquidity constraints over a 12-month horizon.scenarios).
Liquidity Management Actions
Consolidated cash, interest-bearing deposits held as investments, and security resell agreements at the Parent and its subsidiaries was $1.7$1.5 billion at SeptemberJune 30, 20172018, compared with $1.6 billion at December 31, 2017 and $2.0 billion at June 30, 2017 and $2.5 billion at December 31, 2016. The $0.8 billion decrease during2017. During the first ninesix months of 2017 resulted2018, sources of cash were primarily from (1) ana net increase in investment securities,deposits, (2) net loan originationscash provided by operating activities, and purchases, (3) a net decrease in deposits, (4) repurchaseinvestment securities. The primary uses of cash during the same period were (1) repayment of short-term debt, (2) loan originations, (3) repurchases of our common stock, (5) repayment of long-term debt, (6) repurchase and redemption of our preferred stock, and (7)(4) dividends on common and preferred stock. These decreases were partially offset by short-term FHLB borrowings and net cash provided by operating activities.

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During the first nine months of 2017, our HTM and AFS investment securities increased by $1.7 billion. This increase was primarily due to purchases of short-to-medium duration agency guaranteed mortgage-backed securities. Prior to the second quarter of 2017, we were adding to our investment portfolio during the past couple of years to increase our HQLA position in light of the new LCR rules and more broadly, to manage balance sheet liquidity more effectively. However, during the second and third quarters of 2017, our HTM and AFS investment securities decreased by $432 million, and we expect the size of the investment portfolio to be generally stable during the next several quarters.
During the first nine months of 2017 we made cash payments totaling $153 million for our long-term debt which matured and did not incur any new long-term debt during the same time period. See Note 8 for additional detail about debt maturities. During the first nine months of 2017, we also increased our short-term debt with the FHLB by $2.8 billion, and had $3.3 billion outstanding as of September 30, 2017.
Parent Company Liquidity
The Parent’s cash requirements consist primarily of debt service, investments in and advances to subsidiaries, operating expenses, income taxes, and dividends to preferred and common shareholders. The Parent’s cash needs are usually met through dividends from its subsidiaries, interest and investment income, subsidiaries’ proportionate shares of current income taxes, and long-term debt and equity issuances.
Cash and interest-bearing deposits held as investments at the Parent decreased to $0.3 billion at September 30, 2017 compared with $0.4 billionwas $322 million at June 30, 2016 and $0.5 billion2018, compared with $332 million at December 31, 2016. This $0.2 billion decrease for2017 and $351 million at June 30, 2017. The primary uses of cash during the first ninesix months of 2017 resulted primarily from (1) repurchase2018 were repurchases of our common stock (2) repayment of long-term debt, (3) repurchase and redemption of our preferred stock and (4) dividends on our common and preferred stock. This decrease inThe primary sources of cash was partially offset byduring the same period were from common dividends and return of common equity and preferred dividends received by the parent from its subsidiary bank.
At September 30, 2017, maturities of our long-term senior and subordinated debt ranged from June 2023 to September 2028.
During the first ninesix months of 2018 and 2017, the Parent received common dividends and return of common equity totaling $384$325 million and $247 million, respectively, and preferred dividends on preferred stock totaling $39 million. During the first nine months of 2016, our subsidiary bank accrued $125$26 million of common dividends and return of common equity that has since been paid to the Parent and did not receive dividends on its preferred stock.for both periods. At SeptemberJune 30, 2017,2018, ZB, N.A.N.A had approximately $453$344 million available for the payment of dividends to the parentParent under current capital regulations. The dividends that ZB, N.A. can pay are restricted by current and historical earning levels, retained earnings, and risk-based and other regulatory capital requirements and limitations.
General financial market and economic conditions impact our access to, and cost of, external financing. Access to funding markets for the Parent and its subsidiary bank is also directly affected by the credit ratings received from various rating agencies. The ratings not only influence the costs associated with the borrowings, but can also influence the sources of the borrowings. TheOn March 29, 2018, Kroll upgraded the Company’s senior unsecured debt ratingsrating to BBB+ from BBB, the Company’s subordinated debt rating to BBB from BBB-, and outlooks issued byZB, N.A.’s senior unsecured debt rating to A- from BBB+; after the various rating agenciesupgrade, Kroll revised its outlook for both the Company and ZB, N.A. did not change duringto stable from positive. On April 25, 2018, Standard and Poor’s (“S&P”) upgraded the first nine months of 2017, except S&P and Kroll upgraded their outlooks for bothCompany’s senior unsecured debt rating to BBB from BBB-, the Parent and ZB, N.A.Company’s subordinated debt rating to BBB- from Stable to Positive. The credit rating agencies all rate the Parent’sBB+, and ZB, N.A.’s senior unsecured debt at an investment-grade level. In addition, Kroll ratesrating to BBB+ from BBB; after the upgrade, S&P revised its outlook for both the Company and ZB, N.A. to stable from positive. All the credit rating agencies rate the Company’s and ZB, N.A.’s senior unsecured debt and subordinated debt at an investment-grade level, while S&P rates the Company’s subordinated debt as noninvestment-grade.level.

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The following schedule presents the Company’s and ZB, N.A.’s credit ratings as of July 31, 2018.
CREDIT RATINGS
CompanyZB, N.A.CompanyZB, N.A.CompanyZB, N.A.
Rating agencyOutlook
 Long-term issuer/senior
debt rating
Subordinated debt ratingShort-term debt rating
S&PStableStableBBBBBB+BBB-A-2
Moody’sStableStableBaa3Baa3P-2
KrollStableStableBBB+A-BBBK2
The following schedule presents the Parent’s balance sheets as of SeptemberJune 30, 2017,2018, December 31, 2016,2017, and SeptemberJune 30, 2016.2017.
PARENT ONLY CONDENSED BALANCE SHEETS
(In millions)September 30,
2017
 December 31,
2016
 September 30,
2016
June 30,
2018
 December 31,
2017
 June 30,
2017
ASSETS          
Cash and due from banks$2
 $2
 $
$
 $
 $
Interest-bearing deposits331
 529
 415
322
 332
 351
Investment securities:          
Available-for-sale, at fair value37
 40
 41
28
 30
 37
Other noninterest-bearing investments35
 29
 29
42
 36
 34
Investments in subsidiaries:          
Commercial bank7,697
 7,570
 7,617
7,551
 7,620
 7,688
Other subsidiaries6
 6
 81
41
 41
 6
Other assets73
 81
 153
50
 32
 73
Total assets$8,181
 $8,257
 $8,336
$8,034
 $8,091
 $8,189
LIABILITIES AND SHAREHOLDERS’ EQUITY          
Other liabilities$38
 $89
 $87
$30
 $30
 $58
Subordinated debt to affiliated trusts
 
 36
Long-term debt:          
Due to others382
 534
 534
383
 382
 382
Total liabilities420
 623
 657
413
 412
 440
Shareholders’ equity:          
Preferred stock566
 710
 709
566
 566
 566
Common stock4,552
 4,725
 4,748
4,231
 4,445
 4,660
Retained earnings2,700
 2,321
 2,212
3,139
 2,807
 2,572
Accumulated other comprehensive income (loss)(57) (122) 10
(315) (139) (49)
Total shareholders’ equity7,761
 7,634
 7,679
7,621
 7,679
 7,749
Total liabilities and shareholders’ equity$8,181
 $8,257
 $8,336
$8,034
 $8,091
 $8,189
The Parent’s cash payments for interest, reflected in operating expenses, decreased to $16$11 million during the first ninesix months of 20172018 from $25$15 million during the first ninesix months of 20162017 due to the maturity and repayment of long-term debt during 2017 and 2016.2017. Additionally, the Parent paid approximately $89$104 million of total dividends on preferred stock and common stock for the first ninesix months of 20172018 compared to $81with $55 million for the first ninesix months of 2016.2017. Dividends paid per common share have increased gradually from $0.08 in the second quarter of 2017 to $0.24 in the second quarter of 2018. In July 2018, the Board approved an increase of the quarterly common dividend to $0.30 per share.
At June 30, 2018, maturities of our long-term senior and subordinated debt ranged from June 2023 to September 2028.

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Subsidiary Bank Liquidity
ZB, N.A.’s primary source of funding is its core deposits, consisting of noninterest-bearing demand deposits, savings and money market deposits, and time deposits under $250,000. On a consolidated basis, the Company’s loan to total deposit ratio has remained consistent, and was 84.8% at September 30, 2017 compared with 83.4%84% at June 30, 2017 and 80.1%2018 compared with 85% at December 31, 2016, reflecting loan growth2017, and a decrease in deposits during the first nine months of83% at June 30, 2017.
Total deposits decreasedincreased by $1.1$1.0 billion to $52.1$53.6 billion at SeptemberJune 30, 2017,2018, compared with $53.2$52.6 billion at December 31, 2016.2017. This decreaseincrease was a result of a $1.2 billion$896 million and $121 million increase in time deposits and noninterest-bearing demand deposits, respectively, partially offset by a $58 million decrease in savings and money market deposits and a $0.1 billion decrease in noninterest-bearing demand deposits. The decrease was partially offset by a $0.2 billion increase in time deposits. Also, during the first quarter of 2017, ZB, N.A. redeployed approximately $2.6 billion of cash to short-to-medium duration agency guaranteed mortgage-backed securities. ZB, N.A.’s long-term senior debt ratings were the same as the Parent, except Standard & Poor’s was BBB and Kroll’s was BBB+, compared to BBB- for Standard & Poor’s and BBB for Kroll for the Parent.
The FHLB system and Federal Reserve Banks have been and are a source of back-up liquidity, and from time to time, have been a significant source of funding. ZB, N.A. is a member of the FHLB of Des Moines. The FHLB

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allows member banks to borrow against their eligible loans and securities to satisfy liquidity and funding requirements. The Bank is required to invest in FHLB and Federal Reserve stock to maintain their borrowing capacity.
At SeptemberJune 30, 2017,2018, the amount available for additional FHLB and Federal Reserve borrowings was approximately $15.1$13.9 billion, compared with $17.1$14.7 billion at December 31, 2016.2017. Loans with a carrying value of approximately $25.4$24.4 billionat SeptemberJune 30, 20172018 have been pledged at the FHLB of Des Moines and the Federal Reserve as collateral for current and potential borrowings compared with $24.0$25.6 billion at December 31, 2016.2017. At SeptemberJune 30, 2017,2018, we had $3.3$3.7 billion of short-term FHLB borrowings outstanding and no long-term FHLB or Federal Reserve borrowings outstanding, compared with $500 million$3.6 billion of short-term FHLB borrowings and no long-term FHLB or Federal Reserve borrowings outstanding at December 31, 2016.2017. At SeptemberJune 30, 2017,2018, our total investment in FHLB and Federal Reserve stock was $140$185 million and $156 million, respectively, compared with $154 million and $184 million respectively, compared with $30 million and $181 million at December 31, 2016.2017.
Our investment activities can provide or use cash, depending on the asset-liability management posture taken. During the first ninesix months of 2017,2018, HTM and AFS investment securities’ activities resulted in a net increasedecrease in investment securities and a net $2.1 billion decrease$120 million increase in cash, compared with a net $2.9$2.2 billion decrease in cash for the first ninesix months of 2016, reflecting our purchase of HQLA during the first quarter of 2017.
Maturing balances in ZB, N.A.’s loan portfolios also provide additional flexibility in managing cash flows. Lending and purchase activity for the first ninesix months of 20172018 resulted in a net cash outflow of $1.5 billion$431 million compared with a net cash outflow of $2.0$1.0 billion for the first ninesix months of 2016.2017.
A more comprehensive discussion of liquidity risk management, including liquidity risk oversight, liquidity regulation, and certain contractual obligations, is contained in our 20162017 Annual Report on Form 10-K.
Operational Risk Management
Operational risk is the risk to current or anticipated earnings or capital arising from inadequate or failed internal processes or systems, human errors or misconduct, or adverse external events. In our ongoing efforts to identify and manage operational risk, we have an ERM department whose responsibility is to help employees, management and the Board of Directors to assess, understand, measure, manage, and monitor risk in accordance with our Risk Appetite Framework. We have documented both controls and the Control Self-Assessment related to financial reporting under the 2013 framework issued by the Committee of Sponsoring Organizations of the Treadway Commission (“COSO”) and the FDICIA.Federal Deposit Insurance Corporation Improvement Act.
To manage and minimize ourPeriodic reviews, which include aspects of operational risk, we have in place transactional documentation requirements; systems and procedures to monitor transactions and positions; systems and procedures to detect and mitigate attempts to commit fraud, penetrate our systems or telecommunications, access customer data, and/or deny normal access to those systems to our legitimate customers; regulatory compliance reviews; and periodic reviewsare conducted by the Company’s Compliance Risk Management, Internal Audit and Credit Examination departments. Reconciliation procedures have been established to ensure that data processing systems consistentlydepartments on a regular basis, and accurately capture critical data. In addition, the Data Governance department hasalso provide key governance surrounding data integrity and availability. Further, we have key programs and procedures to maintain contingency and business continuity plans for operational support in the event of natural or other disasters. We also mitigate operational risk through the purchase of insurance, including errors and omissions and professional liability insurance.
availability oversight. We are continually improving our oversight of operational risk, including enhancement of risk identification, risk and control self-assessments, and antifraud measures, which are reported on a regular basis to enterprise management committees. The Operational Risk Committee reportsAs part of this process, and as a result of the number and sophistication of attempts to the ERMC, which reports to the ROC. Key measuresdisrupt or penetrate our critical systems, we have been established to increase oversight by ERM and Operational Risk Management through the strengthening of new initiative reviews, enhancements to the Enterprise Procurement and Third Party Risk Management framework, enhancements to the Business Continuity and Disaster Recovery programs and Enterprise Security programs, and the establishment of Fraud Risk Oversight, Incident Response Oversight and Technology

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ZIONS BANCORPORATION AND SUBSIDIARIES

Project Oversight programs. Significant enhancements have also been made to governance, technology, and reporting, including the establishment of Policy and Committee Governance programs, the implementation ofdesignated cyber risk a governance, risk and control solution, and the creation of an Enterprise Risk Profile and an Operational Risk Profile along with business line risk profiles. In addition, the establishment of an Enterprise Exam Management department has standardized our response and reporting, and increased our effectiveness and efficiencies with regulatory examinations, communications and issues management.
The number and sophistication of attempts to disrupt or penetrate our critical systems, sometimes referred to as hacking, cyber fraud, cyber attacks, cyber terrorism, or other similar names, also continue to grow. On a daily basis, the Company, its customers, and other financial institutions are subject to a large number of such attempts. We have established systems and procedures to monitor, thwart or mitigate damage from such attempts. However, in some instances we, or our customers, have been victimized by cyber fraud (our related losses have not been material), or some of our customers have been temporarily unable to routinely access our online systems as a result of, for example, distributed denial of service attacks. We continue to review this area of our operations to help ensure that we manage thislevel one risk in an effective manner.our risk taxonomy, which places it at the highest level of oversight with our other top risks. For a more comprehensive discussion of operational risk management see our 2017 Annual Report on Form 10-K.
CAPITAL MANAGEMENT
We believe that a strong capital position is vital to continued profitability and to promoting depositor and investor confidence.
Capital Planning and Stress Testing
As a bank holding company (“BHC”) with assets greater than $50 billion, prior to the enactment of the Economic Growth, Regulatory Relief and Consumer Protection Act of 2018 (described in the next paragraph), we arewere required by the Dodd-Frank Act to participate in annual stress tests known as the Dodd-Frank Act Stress Test (“DFAST”). In addition, we arewere required to participate in the Federal Reserve Board’s annual Comprehensive Capital Analysishorizontal capital review/comprehensive capital analysis and Reviewreview (“CCAR”), which is also recently referenced as the Horizontal Capital Review (“HCR”) for large and non-complex firms (generally, BHCs, with assets between $50 billion and $250 billion). In our capital plan, we arewere required to forecast, under a variety of economic scenarios, our estimated regulatory capital ratios includingand our Common Equity Tier 1GAAP tangible common equity ratio. Under the implementing regulations for CCAR, BHCs may generally raise and redeem capital, pay dividends, and repurchase stock and take similar capital-related actions only under a capital plan as to which the FRB has not objected. We timely submitted our stress test results and 2018 capital plan (which spans the timeframe of July 2018 to June 2019) to the FRB on April 5, 2018. A detailed discussion of CCAR/DFAST requirements is contained on page 1011 of the “Capital PlanPlanning and Stress Testing” section under Part 1, Item 1 in our 20162017 Annual report on Form 10-K.
We submitted our stress test resultsOn June 21, 2018, the Company issued a press release stating that in accordance with the Economic Growth, Regulatory Relief and 2017 capital planConsumer Protection Act of 2018, which was signed into law on May 24, 2018, Zions Bancorporation and other bank holding companies with assets of less than $100 billion are at this point in time no longer subject to the FRB on April 5, 2017. On June 28, 2017, the Board of Governors of theFederal Reserve's DFAST protocols. The Federal Reserve System notified Zions Bancorporationdetermined, accordingly, that the Federal Reserve doesit will not object to Zions Bancorporation’s Board-approved 2017 capital plan. Our capital plan for the period spanning July 1, 2017 through June 30, 2018 includes up to $465 million of common stock repurchases and approximately $140 million of common stock dividends as follows.
Increasing the quarterly common dividend to $0.24 per share by the second quarter of 2018 following the path of:
$0.12 per share in the third quarter of 2017
$0.16 per share in the fourth quarter of 2017
$0.20 per share in the first quarter of 2018
$0.24 per share in the second quarter of 2018
Capital actions are subject to final approval by Zions Bancorporation’s board of directors, and may be influenced by, among other things, actual earnings performance, business needs and prevailing economic conditions.
On June 22, 2017, we filed a Form 8-K presentingpublicly release the results of its stress test for Zions Bancorporation, but authorized Zions to publish the 2017 DFAST exercise.Federal Reserve's results as communicated to the Company. The results of Zions’ publishedboth stress tests reflect DFAST capital actions as defined in relevant regulations. The results of the Company’s stress tests demonstrate that the Company believes it has sufficient capital to withstand a severe hypothetical economic downturn.downturn, demonstrate the Company’s ample capital position, and are supportive of the Company’s ability to increase its total capital payout. Detailed disclosure of the stress test results can be found on the Company’s website. We expect to continue to utilize stress testing as the primary mechanism to inform our website.decisions on the appropriate level of capital, based upon actual and potentially adverse economic conditions.
On June 29, 2016, we filed a Form 8-K announcing thatApril 5, 2018, as part of an internal corporate restructuring to streamline and simplify its corporate structure, Zions Bancorporation and its wholly-owned bank subsidiary, ZB, N.A., entered into an Agreement and Plan of Merger, as amended and restated on July 10, 2018, pursuant to which the FRB did not object to our 2016 capital plan (which spansCompany will be merged with and into the timeframe of July 31, 2016 to June 30, 2017). The plan included (1)Bank, with the increaseBank continuing as the surviving entity. Following the restructuring, the Bank will be renamed “Zions Bancorporation, N.A.” Before the restructuring can be completed, holders of the quarterlyCompany’s common stock must approve the plan of merger. A special meeting of the holders of the Company’s common stock will be held on September 14, 2018, for that purpose.
Assuming the merger is approved by the Company’s shareholders and the restructuring is completed, the resulting banking organization would no longer be subject to duplicative examinations and other overlapping regulatory requirements, or the enhanced prudential standards established by the Board of Governors of the Federal Reserve System under Section 165 of the Dodd-Frank Act. The Company’s primary federal banking regulator would be the OCC. The Company would continue to be subject to examinations by the CFPB with respect to consumer financial regulations.

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ZIONS BANCORPORATION AND SUBSIDIARIES

dividendCapital Management Actions
During the second quarter of 2018, the Company repurchased 2.1 million shares of common stock for $120 million, and has repurchased a total of 9.2 million shares of common stock for $465 million over the last 12 months at an average price of $50.81 per share. In July 2018, the Company announced that the Board approved a plan to $0.08 per share beginning inrepurchase $185 million of common stock during the third quarter of 2016, (2) up2018 and began the repurchases. However, the timing and amount of additional common share repurchases will be subject to $180 millionvarious factors, including the Company's financial performance, business needs, and prevailing economic conditions. Shares may be purchased occasionally in total repurchases of common equity and (3) up to $144 million in total repurchases of preferred equity.the open market, through privately negotiated transactions, utilizing Rule 10b5-1 plans or otherwise.
As planned, our quarterly dividend on common stock increased to $0.12$0.24 per share during the thirdsecond quarter of 2018. We paid $87 million in dividends on common stock during the first six months of 2018 compared with $32 million during the first six months of 2017. In July 2018, the Board of Directors declared a quarterly dividend of $0.30 per common share payable on August 23, 2018 to shareholders of record on August 16, 2018. We paid dividends on preferred stock of $17 million for the first six months of 2018 compared with $23 million during the first six months of 2017. The quarterly dividend had been $0.08 perCompany’s recently announced capital actions were reflected in the results of both the Company’s internal stress test results as well as the results communicated to the Company by the FRB with respect to the Federal Reserve’s stress test of Zions’ financial and capital strength. See Note 8 for additional detail about capital management transactions during the first six months of 2018.
Total shareholders’ equity remained consistent and was $7.6 billion at June 30, 2018 compared with $7.7 billion at both December 31, 2017 and June 30, 2017. Total shareholders’ equity decreased from December 31, 2017 by (1) $235 million from repurchases of Company common stock, (2) $176 million from a decrease in the fair value of our AFS securities due largely to changes in the interest rate environment, and (3) $104 million from common and preferred dividends. These decreases were offset by net income of $435 million.
Despite the previously mentioned share sincerepurchases, the thirdweighted average diluted shares increased by 1.1 million compared with the second quarter of 2016. The Company has repurchased $115 million2017, primarily due to the dilutive impact of warrants that have been outstanding since 2008 (“TARP” warrants - NASDAQ: ZIONZ) and 2010 (NASDAQ: ZIONW) and employee equity grants. During 2017 and the first six months of 2018, the market price of our common stock at an averagewas higher than the exercise price of $45.45 per share under the 2017 capital plan and $180 million ofcommon stock warrants on our common stock at an average priceand had a dilutive effect upon earnings per share. During the first six months of $35.66 per share under the 2016 capital plan. The Company has $3502018, 1.1 million of buyback capacity remaining in its 2017 capital plan.
Also in accordance with our 2016 capital plan, we redeemed all outstanding shares of our 7.9% Series F preferredcommon stock were issued from the cashless exercise of 3.3 million common stock warrants which would have expired on the redemption dateNovember 14, 2018. As of June 15, 2017.30, 2018, the Company had 2.5 million and 29.3 million warrants outstanding of ZIONZ (TARP) and ZIONW warrants, respectively. The ZIONZ warrants expire on November 14, 2018 and the ZIONW warrants expire on May 22, 2020.
The following schedule presents the diluted shares from the remaining common stock warrants at various Zions Bancorporation common stock market prices as of July 31, 2018, excluding the effect of changes in exercise cost and warrant share multiplier from the future payment of common stock dividends.
IMPACT OF COMMON STOCK WARRANTS
Assumed Zions Bancorporation Common Stock Market Price Diluted Shares (000s)
   
$35.00
 0
40.00
 4,900
45.00
 8,014
50.00
 10,506
55.00
 12,545
60.00
 14,244
65.00
 15,682
See Note 8 contains additionalof the Notes to Consolidated Financial Statements for more information about the redemption.on our common stock warrants.

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ZIONS BANCORPORATION AND SUBSIDIARIES

Basel III
The Basel III capital rules became effective for the Company on January 1, 2015 (subject to phase-in periods for certain of their components). The Basel III capital rules will be fully phased in on January 1, 2019. In 2013, the FRB, FDIC, and OCC published final rules (the “Basel III Capital Rules”) establishing a new comprehensive capital framework for U.S. banking organizations. The rules implemented the Basel Committee’s December 2010 framework, commonly referred to as Basel III, for strengthening international capital standards as well as certain provisions of the Dodd-Frank Act. The Basel III capital rules became effective for the Company on January 1, 2015 and were subject to phase-in periods for certain of their components. In November 2017, the FRB, FDIC and OCC published a final rule for non-advanced approaches banks that extends the regulatory capital treatment applicable during 2017 under the regulatory capital rules for certain items.
A detailed discussion of Basel III requirements, including implications for the Company, is contained on page 9 in “Capital Standards – Basel Framework” under Part 1, Item 1 in our 20162017 Annual Report on Form 10-K.
We met all capital adequacy requirements under the Basel III Capital Rules based upon phase-in rules as of SeptemberJune 30, 2017,2018, and believe that we would meet all capital adequacy requirements on a fully phased-in basis if such requirements were currently effective.
Capital Management Actions
Total shareholders’ equity increased by $0.2 billion to $7.8 billion at September 30, 2017 from $7.6 billion at December 31, 2016. The increase in total shareholders’ equity is primarily due to net income of $469 million and a $65 million increase in the fair value of our AFS securities due largely to changes in the interest rate environment. These increases are partially offset by repurchases of our common stock under our buyback program totaling $205 million and $144 million paid to redeem our Series F preferred stock.
During the latter part of 2016, the market price of our common stock increased above the exercise price of common stock warrants on our common stock. As of September 2017, we have 5.8 million common stock warrants at an exercise price of $36.27 per share which expire on November 14, 2018 and 29.3 million common stock warrants at an exercise price of $35.61 per share which expire on May 22, 2020. The following schedule presents the diluted shares from common stock warrants at various Zions Bancorporation common stock market prices as of August 24, 2017, excluding the effect of future changes in exercise cost and warrant share multiplier from the payment of common stock dividends.
IMPACT OF COMMON STOCK WARRANTS
Assumed Zions Bancorporation Common Stock Market Price Diluted Shares (000s)
   
$35.00
 0
40.00
 4,590
45.00
 8,070
50.00
 10,854
55.00
 13,132

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ZIONS BANCORPORATION AND SUBSIDIARIES

We paid $57 million in dividends on common stock during the first nine months of 2017 compared with $41 million during the first nine months of 2016. During its October 2017 meeting, the Board of Directors declared a quarterly dividend of $0.16 per common share payable on November 22, 2017 to shareholders of record on November 15, 2017. We paid dividends on preferred stock of $32 million for the first nine months of 2017 compared to $40 million during the first nine months of 2016. See Note 8 for additional detail about capital management transactions during the first nine months of 2017.
Capital Ratios
Banking organizations are required by capital regulations to maintain adequate levels of capital as measured by several regulatory capital ratios. The following schedule shows the Company’s capital and performance ratios as of SeptemberJune 30, 2017,2018, December 31, 2016,2017, and SeptemberJune 30, 2016.2017.
CAPITAL RATIOS
September 30,
2017
 December 31,
2016
 September 30,
2016
June 30,
2018
 December 31,
2017
 June 30,
2017
          
Tangible common equity ratio1
9.57% 9.49% 9.91%9.2% 9.3% 9.6%
Tangible equity ratio1
10.45% 10.63% 11.09%10.1% 10.2% 10.4%
Average equity to average assets (three months ended)11.93% 12.48% 12.81%11.5% 11.9% 12.0%
Basel III risk-based capital ratios2:
          
Common equity tier 1 capital12.22% 12.07% 12.04%12.2% 12.1% 12.3%
Tier 1 leverage10.58% 11.09% 11.27%10.5% 10.5% 10.5%
Tier 1 risk-based13.33% 13.49% 13.48%13.3% 13.2% 13.4%
Total risk-based14.99% 15.24% 15.31%14.8% 14.8% 15.1%
Return on average common equity (three months ended)8.3% 7.1% 6.7%10.6% 6.3% 8.6%
Return on average tangible common equity (three months ended)1
9.8% 8.4% 7.9%12.4% 7.4% 10.2%
1 
See “GAAP to Non-GAAP Reconciliations” on page 5 for more information regarding these ratios.
2 
Based on the applicable phase-in periods.
At SeptemberJune 30, 2017,2018, Basel III regulatory tier 1 risk-based capital and total risk-based capital was $6.8$6.9 billion and 7.7$7.7 billion, respectively, compared with $6.7$6.8 billion and $7.6 billion, respectively, at December 31, 2016.2017. A more comprehensive discussion of our capital management is contained in our 20162017 Annual Report on Form 10-K.
Consistent with its previous public statements on the matter, and subject to results of ongoing internal stress testing, we intend to reduce our capital ratios to levels similar to or slightly stronger than the median levels of our peer group. Assuming economic conditions remain generally stable, we intend to accomplish the reduction of our capital ratios in an orderly fashion over the next six to eight quarters. We expect to continue to utilize stress testing as the primary mechanism to inform our decisions on the appropriate level of capital, based upon actual and potentially adverse economic conditions.


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ITEM 1.
FINANCIAL STATEMENTS (Unaudited)
ZIONS BANCORPORATION AND SUBSIDIARIES
CONSOLIDATED BALANCE SHEETS
ZIONS BANCORPORATION AND SUBSIDIARIES
CONSOLIDATED BALANCE SHEETS
ZIONS BANCORPORATION AND SUBSIDIARIES
CONSOLIDATED BALANCE SHEETS
(In millions, shares in thousands)September 30,
2017
 December 31,
2016
June 30,
2018
 December 31,
2017
(Unaudited)  (Unaudited)  
ASSETS      
Cash and due from banks$541
 $737
$468
 $548
Money market investments:      
Interest-bearing deposits765
 1,411
698
 782
Federal funds sold and security resell agreements467
 568
558
 514
Investment securities:      
Held-to-maturity, at amortized cost (approximate fair value $743 and $850)746
 868
Held-to-maturity, at amortized cost (approximate fair value $866 and $762)878
 770
Available-for-sale, at fair value15,242
 13,372
14,627
 15,161
Trading account, at fair value56
 115
207
 148
Total investment securities16,044
 14,355
15,712
 16,079
Loans held for sale71
 172
84
 44
Loans and leases, net of unearned income and fees44,156
 42,649
45,230
 44,780
Less allowance for loan losses541
 567
490
 518
Loans held for investment, net of allowance43,615
 42,082
44,740
 44,262
Other noninterest-bearing investments1,008
 884
1,054
 1,029
Premises, equipment and software, net1,083
 1,020
1,099
 1,094
Goodwill1,014
 1,014
Core deposit and other intangibles3
 8
Goodwill and intangibles1,015
 1,016
Other real estate owned3
 4
5
 4
Other assets950
 984
1,024
 916
Total Assets$65,564
 $63,239
$66,457
 $66,288
LIABILITIES AND SHAREHOLDERS’ EQUITY      
Deposits:      
Noninterest-bearing demand$24,011
 $24,115
$24,007
 $23,886
Interest-bearing:      
Savings and money market25,179
 26,364
25,562
 25,620
Time2,909
 2,757
4,011
 3,115
Total deposits52,099
 53,236
53,580
 52,621
Federal funds and other short-term borrowings4,624
 827
Federal funds purchased and other short-term borrowings4,158
 4,976
Long-term debt383
 535
383
 383
Reserve for unfunded lending commitments59
 65
58
 58
Other liabilities638
 942
657
 571
Total liabilities57,803
 55,605
58,836
 58,609
Shareholders’ equity:      
Preferred stock, without par value, authorized 4,400 shares566
 710
Common stock, without par value; authorized 350,000 shares; issued and outstanding 199,712 and 203,085 shares4,552
 4,725
Preferred stock, without par value; authorized 4,400 shares566
 566
Common stock, without par value; authorized 350,000 shares; issued and outstanding 195,392 and 197,532 shares4,231
 4,445
Retained earnings2,700
 2,321
3,139
 2,807
Accumulated other comprehensive income (loss)(57) (122)(315) (139)
Total shareholders’ equity7,761
 7,634
7,621
 7,679
Total liabilities and shareholders’ equity$65,564
 $63,239
$66,457
 $66,288
See accompanying notes to consolidated financial statements.

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ZIONS BANCORPORATION AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF INCOME
(Unaudited)
ZIONS BANCORPORATION AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF INCOME
(Unaudited)
ZIONS BANCORPORATION AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF INCOME
(Unaudited)
(In millions, except shares and per share amounts)Three Months Ended
September 30,
 Nine Months Ended
September 30,
Three Months Ended
June 30,
 Six Months Ended
June 30,
2017 2016 2017 20162018 2017 2018 2017
Interest income:              
Interest and fees on loans$468
 $437
 $1,370
 $1,291
$514
 $469
 $1,011
 $902
Interest on money market investments5
 5
 14
 18
7
 5
 13
 9
Interest on securities84
 49
 246
 143
85
 84
 170
 162
Total interest income557
 491
 1,630
 1,452
606
 558
 1,194
 1,073
Interest expense:              
Interest on deposits15
 13
 43
 36
29
 14
 48
 28
Interest on short- and long-term borrowings20
 9
 48
 30
29
 16
 56
 28
Total interest expense35
 22
 91
 66
58
 30
 104
 56
Net interest income522
 469
 1,539
 1,386
548
 528
 1,090
 1,017
Provision for loan losses5
 19
 35
 95
5
 7
 (35) 30
Net interest income after provision for loan losses517
 450
 1,504
 1,291
543
 521
 1,125
 987
Noninterest income:              
Service charges and fees on deposit accounts42
 45
 127
 128
42
 43
 84
 85
Other service charges, commissions and fees55
 54
 160
 156
55
 56
 110
 105
Wealth management income11
 10
 30
 27
Wealth management and trust income14
 10
 25
 20
Loan sales and servicing income6
 11
 19
 29
7
 6
 13
 13
Capital markets and foreign exchange8
 6
 21
 16
7
 6
 15
 13
Customer-related fees122
 126
 357
 356
125
 121
 247
 236
Dividends and other investment income9
 9
 31
 20
11
 10
 22
 22
Securities gains, net5
 8
 13
 11
1
 2
 1
 7
Other3
 2
 3
 1
1
 (1) 6
 (1)
Total noninterest income139
 145
 404
 388
138
 132
 276
 264
Noninterest expense:              
Salaries and employee benefits253
 242
 756
 742
266
 240
 535
 502
Occupancy, net35
 33
 101
 93
32
 32
 63
 66
Furniture, equipment and software, net32
 29
 96
 92
32
 32
 65
 64
Other real estate expense, net(1) 
 (1) (2)
 
 1
 
Credit-related expense7
 7
 23
 19
7
 8
 13
 15
Provision for unfunded lending commitments(4) (3) (6) (13)7
 3
 
 (2)
Professional and legal services14
 14
 42
 38
14
 14
 26
 28
Advertising6
 6
 17
 17
7
 6
 13
 11
FDIC premiums15
 12
 40
 28
14
 13
 26
 25
Amortization of core deposit and other intangibles2
 2
 5
 6
Other54
 61
 159
 161
49
 57
 98
 110
Total noninterest expense413
 403
 1,232
 1,181
428
 405
 840
 819
Income before income taxes243
 192
 676
 498
253
 248
 561
 432
Income taxes83
 65
 207
 166
56
 80
 126
 124
Net income160
 127
 469
 332
197
 168
 435
 308
Preferred stock dividends(8) (10) (30) (36)(10) (12) (17) (23)
Preferred stock redemption
 
 (3) (10)
 (2) 
 (2)
Net earnings applicable to common shareholders$152
 $117
 $436
 $286
$187
 $154
 $418
 $283
Weighted average common shares outstanding during the period:              
Basic shares (in thousands)200,332
 204,312
 201,493
 204,180
195,583
 201,822
 196,149
 202,083
Diluted shares (in thousands)209,106
 204,714
 209,366
 204,425
209,247
 208,183
 209,859
 209,353
Net earnings per common share:              
Basic$0.75
 $0.57
 $2.14
 $1.39
$0.95
 $0.76
 $2.11
 $1.39
Diluted0.72
 0.57
 2.06
 1.39
0.89
 0.73
 1.97
 1.34
See accompanying notes to consolidated financial statements.

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ZIONS BANCORPORATION AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
(Unaudited)
ZIONS BANCORPORATION AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
(Unaudited)
ZIONS BANCORPORATION AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
(Unaudited)
Three Months Ended
September 30,
 Nine Months Ended
September 30,
Three Months Ended
June 30,
 Six Months Ended
June 30,
(In millions)2017 2016 2017 20162018 2017 2018 2017
              
Net income for the period$160
 $127
 $469
 $332
$197
 $168
 $435
 $308
Other comprehensive income (loss), net of tax:              
Net unrealized holding gains (losses) on investment securities(8) (11) 65
 54
(50) 61
 (175) 73
Net unrealized gains on other noninterest-bearing investments
 2
 2
 2
2
 1
 3
 2
Net unrealized holding gains (losses) on derivative instruments
 (3) 
 14

 1
 (3) 
Reclassification adjustment for increase in interest income recognized in earnings on derivative instruments
 (2) (2) (5)(1) (1) (1) (2)
Pension and postretirement
 
 
 (1)
Other comprehensive income (loss)(8) (14) 65
 64
(49) 62
 (176) 73
Comprehensive income$152
 $113
 $534
 $396
$148
 $230
 $259
 $381
See accompanying notes to consolidated financial statements.
ZIONS BANCORPORATION AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS’ EQUITY
(Unaudited)
(In millions, except shares
and per share amounts)
Preferred
stock
 Common stock Retained earnings 
Accumulated other
comprehensive income (loss)
 
Total
shareholders’ equity
Shares
(in thousands)
 Amount   
              
Balance at December 31, 2017$566
 197,532
 $4,445
 $2,807
  $(139)  $7,679
Net income for the period      435
     435
Other comprehensive loss, net of tax         (176)  (176)
Cumulative effect adjustment, adoption of ASU 2014-09, Revenue from Contracts with Customers

   

 1
     1
Company common stock repurchased  (4,301) (235)       (235)
Net shares issued from stock warrant exercises  1,095
         
Net activity under employee plans and related tax benefits  1,066
 21
       21
Dividends on preferred stock

     (17)     (17)
Dividends on common stock, $0.44 per share      (87)     (87)
Balance at June 30, 2018$566
 195,392
 $4,231
 $3,139
  $(315)  $7,621
              
Balance at December 31, 2016$710
 203,085
 $4,725
 $2,321
  $(122)  $7,634
Net income for the period      308
     308
Other comprehensive income, net of tax         73
  73
Preferred stock redemption(144)   2
 (2)     (144)
Company common stock repurchased

 (2,158) (90)       (90)
Net activity under employee plans and related tax benefits  1,204
 23
       23
Dividends on preferred stock

     (23)     (23)
Dividends on common stock, $0.16 per share      (32)     (32)
Balance at June 30, 2017$566
 202,131
 $4,660
 $2,572
  $(49)  $7,749
See accompanying notes to consolidated financial statements.

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ZIONS BANCORPORATION AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS’ EQUITY
(Unaudited)
(In millions, except shares
and per share amounts)
Preferred
stock
 Common stock Retained earnings 
Accumulated other
comprehensive income (loss)
 
Total
shareholders’ equity
Shares
(in thousands)
 Amount   
              
Balance at December 31, 2016$710
 203,085
 $4,725
 $2,321
  $(122)  $7,634
Net income for the period      469
     469
Other comprehensive income, net of tax         65
  65
Preferred stock redemption(144)   2
 (2)     (144)
Company common stock repurchased  (4,689) (205)       (205)
Net activity under employee plans and related tax benefits  1,316
 30
       30
Dividends on preferred stock

     (30)     (30)
Dividends on common stock, $0.28 per share      (58)     (58)
Balance at September 30, 2017$566
 199,712
 $4,552
 $2,700
  $(57)  $7,761
              
Balance at December 31, 2015$828
 204,417
 $4,767
 $1,967
  $(55)  $7,507
Net income for the period      332
     332
Other comprehensive income, net of tax         64
  64
Preferred stock redemption(118)   2
 (10)     (126)
Company common stock repurchased

 (1,469) (45)       (45)
Net activity under employee plans and related tax benefits  902
 24
       24
Dividends on preferred stock

     (36)     (36)
Dividends on common stock, $0.20 per share      (41)     (41)
Change in deferred compensation      
     
Balance at September 30, 2016$710
 203,850
 $4,748
 $2,212
  $9
  $7,679
ZIONS BANCORPORATION AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF CASH FLOWS
(Unaudited)
(In millions)Three Months Ended
June 30,
 Six Months Ended
June 30,
2018 2017 2018 2017
CASH FLOWS FROM OPERATING ACTIVITIES       
Net income for the period$197
 $168
 $435
 $308
Adjustments to reconcile net income to net cash provided by operating activities:       
Provision for credit losses12
 10
 (35) 28
Depreciation and amortization49
 47
 92
 84
Share-based compensation5
 5
 18
 17
Deferred income tax expense (benefit)(11) (5) 2
 8
Net decrease (increase) in trading securities(63) (22) (59) 54
Net decrease (increase) in loans held for sale(1) 53
 (34) 89
Change in other liabilities81
 (63) 85
 (21)
Change in other assets(100) 12
 (52) 33
Other, net(6) (10) (14) (24)
Net cash provided by operating activities163
 195
 438
 576
CASH FLOWS FROM INVESTING ACTIVITIES       
Net decrease in money market investments157
 530
 40
 385
Proceeds from maturities and paydowns of investment securities held-to-maturity55
 75
 114
 166
Purchases of investment securities held-to-maturity(165) (66) (222) (73)
Proceeds from sales, maturities, and paydowns of investment securities available-for-sale735
 630
 1,404
 1,160
Purchases of investment securities available-for-sale(564) (353) (1,176) (3,466)
Net change in loans and leases(120) (919) (431) (1,036)
Net change in other noninterest-bearing investments27
 (29) (4) (103)
Purchases of premises and equipment(26) (44) (54) (94)
Other, net1
 3
 
 8
Net cash provided by (used in) investing activities100
 (173) (329) (3,053)
CASH FLOWS FROM FINANCING ACTIVITIES       
Net increase (decrease) in deposits618
 (1,099) 965
 (858)
Net change in short-term funds borrowed(709) 205
 1,181
 2,015
Proceeds from debt over 90 days and up to one year
 1,250
 
 1,750
Repayments of debt over 90 days and up to one year
 (250) (2,000) (250)
Cash paid for preferred stock redemption
 (144) 
 (144)
Repayment of long-term debt
 
 
 (153)
Proceeds from the issuance of common stock7
 9
 17
 18
Dividends paid on common and preferred stock(55) (26) (104) (55)
Company common stock repurchased(126) (52) (248) (102)
Net cash provided by (used in) financing activities(265) (107) (189) 2,221
Net decrease in cash and due from banks(2) (85) (80) (256)
Cash and due from banks at beginning of period470
 566
 548
 737
Cash and due from banks at end of period$468
 $481
 $468
 $481
Cash paid for interest$55
 $30
 $100
 $52
Net cash paid for income taxes90
 128
 91
 122
Noncash activities are summarized as follows:       
Loans held for investment transferred to other real estate owned3
 2
 6
 4
Loans held for investment reclassified to loans held for sale, net24
 (12) 39
 11
See accompanying notes to consolidated financial statements.

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ZIONS BANCORPORATION AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF CASH FLOWS
(Unaudited)
(In millions)Three Months Ended
September 30,
 Nine Months Ended
September 30,
2017 2016 2017 2016
CASH FLOWS FROM OPERATING ACTIVITIES       
Net income for the period$160
 $127
 $469
 $332
Adjustments to reconcile net income to net cash provided by operating activities:       
Provision for credit losses1
 16
 29
 82
Depreciation and amortization47
 34
 131
 88
Share-based compensation4
 6
 21
 22
Deferred income tax expense (benefit)(4) 2
 4
 (9)
Net decrease (increase) in trading securities5
 11
 59
 (60)
Net decrease (increase) in loans held for sale(18) (12) 71
 (9)
Change in other liabilities84
 52
 63
 215
Change in other assets(42) (4) (9) (222)
Other, net(10) (19) (35) (24)
Net cash provided by operating activities227
 213
 803
 415
CASH FLOWS FROM INVESTING ACTIVITIES       
Net decrease (increase) in money market investments363
 (389) 748
 3,563
Proceeds from maturities and paydowns of investment securities held-to-maturity83
 34
 249
 66
Purchases of investment securities held-to-maturity(54) (35) (127) (235)
Proceeds from sales, maturities, and paydowns of investment securities available-for-sale615
 683
 1,775
 3,257
Purchases of investment securities available-for-sale(535) (1,607) (4,001) (5,974)
Net change in loans and leases(475) (58) (1,511) (1,956)
Net change in other noninterest-bearing investments14
 (26) (89) (29)
Purchases of premises and equipment(39) (51) (133) (143)
Proceeds from sales of other real estate owned3
 6
 7
 15
Other, net1
 2
 5
 5
Net cash used in investing activities(24) (1,441) (3,077) (1,431)
CASH FLOWS FROM FINANCING ACTIVITIES       
Net increase (decrease) in deposits(278) 575
 (1,136) 496
Net change in short-term funds borrowed(718) 845
 1,297
 768
Proceeds from debt over 90 days and up to one year1,850
 
 3,600
 
Repayments of debt over 90 days and up to one year(850) 
 (1,100) 
Cash paid for preferred stock redemption
 
 (144) (126)
Repayments of long-term debt
 (129) (153) (244)
Proceeds from the issuance of common stock2
 5
 20
 8
Dividends paid on common and preferred stock(34) (31) (89) (81)
Company common stock repurchased(115) (45) (217) (51)
Other, net
 1
 
 1
Net cash provided by (used in) financing activities(143) 1,221
 2,078
 771
Net increase (decrease) in cash and due from banks60
 (7) (196) (245)
Cash and due from banks at beginning of period481
 560
 737
 798
Cash and due from banks at end of period$541
 $553
 $541
 $553
Cash paid for interest$27
 $18
 $79
 $61
Net cash paid for income taxes84
 53
 206
 154
Noncash activities are summarized as follows:       
Loans held for investment transferred to other real estate owned1
 6
 5
 13
Loans held for investment reclassified to loans held for sale, net1
 40
 14
 36
Available-for-sale securities purchased, not settled25
 
 81
 
Held-to-maturity securities purchased, not settled
 
 31
 
See accompanying notes to consolidated financial statements.

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ZIONS BANCORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
(Unaudited)
SeptemberJune 30, 20172018
1.BASIS OF PRESENTATION
The accompanying unaudited consolidated financial statements of Zions Bancorporation (“the Parent”) and its majority-owned subsidiaries (collectively “the Company,” “Zions,” “we,” “our,” “us”) have been prepared in accordance with United States (“U.S.”) generally accepted accounting principles (“GAAP”) for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by GAAP for complete financial statements. In the opinion of management, all adjustments (consisting of normal recurring accruals) considered necessary for a fair presentation have been included. References to GAAP, including standards promulgated by the Financial Accounting Standards Board, (“FASB”), are made according to sections of the Accounting Standards Codification (“ASC”). Changes to the ASC are made with Accounting Standards Updates (“ASU”) that include consensus issues of the Emerging Issues Task Force (“EITF”).Force. In certain cases, ASUs are issued jointly with International Financial Reporting Standards (“IFRS”).Standards.
Operating results for the ninesix months ended SeptemberJune 30, 20172018 and 20162017 are not necessarily indicative of the results that may be expected in future periods. In preparing the consolidated financial statements, we are required to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. Actual results could differ from those estimates. The consolidated balance sheet at December 31, 20162017 is from the audited financial statements at that date, but does not include all of the information and footnotes required by GAAP for complete financial statements. For further information, refer to the consolidated financial statements and footnotes thereto included in the Company’s 20162017 Annual Report on Form 10-K. Certain prior period amounts have been reclassified to conform with the current period presentation. These reclassifications did not affect net income or shareholders’ equity.
Zions Bancorporation (“the Parent”) is a financial holding company headquartered in Salt Lake City, Utah, which owns and operates a commercial bank. The Parent and its subsidiaries (collectively “the Company”) provide a full range of banking and related services in 11 Western and Southwestern states through seven7 separately managed and branded units as follows: Zions Bank, in Utah, Idaho and Wyoming; Amegy Bank (“Amegy”), in Texas; California Bank & Trust (“CB&T”); Amegy Bank (“Amegy”), in Texas; National Bank of Arizona (“NBAZ”); Nevada State Bank (“NSB”); Vectra Bank Colorado (“Vectra”), in Colorado and New Mexico; and The Commerce Bank of Washington (“TCBW”) which operates under that name in Washington and under the name The Commerce Bank of Oregon (“TCBO”) in Oregon. The Parent also owns and operates certain nonbank subsidiaries that engage in financial services.


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ZIONS BANCORPORATION AND SUBSIDIARIES

2.RECENT ACCOUNTING PRONOUNCEMENTS
Standard Description Date of adoption Effect on the financial statements or other significant matters
       
Standards not yet adopted by the Company
       
ASU 2014-09,2016-02, Revenue from Contracts with CustomersLeases (Topic 606)842) and subsequent related ASUs


The core principle of the new guidance is that a company will recognize revenue when it transfers promised goods or services to customers in an amount that reflects the consideration to which the company expects to be entitled in exchange for those goods or services. The banking industry does not expect significant changes because major sources of revenue are from financial instruments that have been excluded from the scope of the new standard, (including loans, derivatives, debt and equity securities, etc.). However, these new standards affect other fees charged by banks, such as asset management fees, credit card interchange fees, deposit account fees, etc. Adoption may be made on a full retrospective basis with practical expedients, or on a modified retrospective basis with a cumulative effect adjustment.January 1, 2018Approximately 85% of our revenue, including all of our interest income and a portion of our noninterest income, is out of scope of the guidance. The contracts that are in scope of the guidance are primarily related to service charges and fees on deposit accounts, wealth management income, and other service charges, commissions and fees. We have completed our review of these contracts and have not identified any material changes in the timing of revenue recognition. We plan to adopt this guidance using the modified retrospective transition method, and we expect to expand our qualitative disclosures of revenue recognition upon adoption.
ASU 2016-01, Financial Instruments – Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities
The standard provides revised accounting guidance related to the accounting for and reporting of financial instruments. Some of the main provisions include:
– Equity investments that do not result in consolidation and are not accounted for under the equity method would be measured at fair value through net income
– Changes in instrument-specific credit risk for financial liabilities that are measured under the fair value option would be recognized in other comprehensive income (“OCI”).
– Elimination of the requirement to disclose the methods and significant assumptions used to estimate the fair value of financial instruments carried at amortized cost. However, it will require the use of exit price when measuring the fair value of financial instruments measured at amortized cost for disclosure purposes.
January 1, 2018We do not have a significant amount of equity securities classified as available-for-sale (“AFS”). Additionally, we do not have any financial liabilities accounted for under the fair value option. Therefore, the transition adjustment upon adoption of this guidance is not expected to be material. We are refining our valuation models to better account for an exit price, but do not expect a significant change in our disclosure.
ASU 2017-12, Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities
The purpose of this standard is to better align a company’s financial reporting for hedging activities with the economic objectives of those activities. The standard is effective for public business entities for fiscal years beginning after December 15, 2018, with early adoption, including adoption in an interim period, permitted. The standard requires a modified retrospective transition method that requires recognition of the cumulative effect of the change on the opening balance of each affected component of equity in the statement of financial position as of the date of adoption.January 1, 2018While we continue to assess all potential impacts of the standard, we currently do not expect adoption of this guidance to have a material impact on our consolidated financial statements. We are still evaluating when to adopt this guidance.

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ZIONS BANCORPORATION AND SUBSIDIARIES

StandardDescriptionDate of adoptionEffect on the financial statements or other significant matters
Standards not yet adopted by the Company (continued)
ASU 2016-02, Leases (Topic 842) The standard requires that a lessee recognize assets and liabilities for leases with lease terms of more than 12 months.on the balance sheet. For leases with a term of 12 months or less, however, a lessee is permitted to make an accounting policy election by class of underlying asset not to recognize lease assets and lease liabilities. The recognition, measurement, and presentation of expenses and cash flows arising from a lease by a lessee primarily will depend primarily on its classification as a finance or operating lease. However, theThe standard will require both types of leases to be recognized on the balance sheet. It also requires disclosures to better understand the amount, timing, and uncertainty of cash flows arising from leases. These disclosures include qualitative and quantitative requirements, providing additional information about the amounts recorded in the financial statements. January 1, 2019 We are
Upon adoption of the standard, we currently evaluatingestimate the potential impact of this guidanceright-of-use asset to be between $200-$250 million. This estimate may change depending on the Company’s financial statements. As of December 31, 2016, the Company had minimum noncancelable net operating lease payments of $275 million that are being evaluated.activity. The implementation team is working on gathering all key lease data elements to meet the requirements of the new guidance. Additionally, we are implementing new lease software that will accommodate the new accounting requirements.

       
ASU 2017-08, Nonrefundable Fees and Other Costs (Subtopic 310-20): Premium Amortization on Purchased Callable Debt Securities
 The amendments in this ASU shorten the amortization period for certain callable debt securities held at a premium. The standard requires the premium to be amortized to the earliest call date. The update does not change the accounting for securities held at a discount. January 1, 2019 Our initial analysis suggests this guidance will not have a material impact on the Company’s financial statements, but we will continue to monitor its impact as we move closer to implementation.
       
ASU 2016-13,
Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments
 
The standard significantly changes how entities will measure credit losses for most financial assets and certain other instruments that are not measured at fair value through net income. The standard replaces today’s “incurred loss” approach with an “expected loss” model for instruments such as loans and held-to-maturity (“HTM”) securities that are measured at amortized cost. The standard requires credit losses relating to AFSavailable-for-sale (“AFS”) debt securities to be recorded through an allowance for credit lossesloss (“ACL”) rather than a reduction of the carrying amount. It also changes the accounting for purchased credit-impaired debt securities and loans. The standard retains many of the current disclosure requirements in currentUS GAAP and expands certain disclosure requirements. Early adoption of the guidance is permitted as of January 1, 2019.

 January 1, 2020 
We have formed an implementation team led jointly by Credit, Treasury, and the Corporate Controller’s group, that also includes other lines of business and functions within the Company. The implementation team is working on developing models that can meet the requirements of the new guidance. While this standard may potentially have a material impact on the Company’s financial statements, we are still in process of conducting our evaluation.

       
ASU 2017-04,
Intangibles – Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment
 The standard eliminates the requirement to calculate the implied fair value of goodwill (i.e. Step 2 of the current goodwill impairment test) to measure a goodwill impairment charge. Instead, entities would record an impairment charge based on the excess of a reporting unit’s carrying amount over its fair value (i.e., measure the charge based on Step 1 of the current guidance). The standard does not change the guidance on completing Step 1 of the goodwill impairment test. The standard also continues to allow entities to perform the optional qualitative goodwill impairment assessment before determining whether to proceed to Step 1. The standard is effective for the Company as of January 1, 2020. Early adoption is allowed for any goodwill impairment test performed after January 1, 2017. January 1, 2020 
We do not currently expect this guidance will have a material impact on the Company’s financial statements since the fair values of our reporting units were not lower than their respective carrying amounts at the time of our goodwill impairment analysis for 2016.
2017.


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ZIONS BANCORPORATION AND SUBSIDIARIES

StandardDescriptionDate of adoptionEffect on the financial statements or other significant matters
Standards adopted by the Company
       
ASU 2016-09,2014-09, Stock CompensationRevenue from Contracts with Customers (Topic 718)606) and subsequent related ASUs


The core principle of the new guidance is that a company will recognize revenue when it transfers promised goods or services to customers in an amount that reflects the consideration to which the Company expects to be entitled in exchange for those goods or services. The banking industry does not expect significant changes because major sources of revenue are from financial instruments that have been excluded from the scope of the new standard, (including loans, derivatives, debt and equity securities, etc.). However, these new standards affect other fees charged by banks, such as asset management fees, credit card interchange fees, deposit account fees, etc. Adoption may be made on a full retrospective basis with practical expedients, or on a modified retrospective basis with a cumulative effect adjustment. Additionally, the new guidance significantly increases the disclosures related to revenue recognition practices.

January 1, 2018We adopted this guidance using the modified retrospective transition method. There was no material impact at adoption to the Company’s consolidated financial statements. New disclosures are found in Footnote 10.
ASU 2016-01, Financial Instruments – Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial LiabilitiesThe standard provides revised accounting guidance related to the accounting for and reporting of financial instruments. Some of the main provisions include:
– Equity investments that do not result in consolidation and are not accounted for under the equity method would be measured at fair value through net income.
– Changes in instrument-specific credit risk for financial liabilities that are measured under the fair value option would be recognized in other comprehensive income (“OCI”).
– Elimination of the requirement to disclose the methods and significant assumptions used to estimate the fair value of financial instruments carried at amortized cost. However, it will require the use of exit price when measuring the fair value of financial instruments measured at amortized cost for disclosure purposes.
January 1, 2018The transition adjustment upon adoption of this guidance was not material. We refined our valuation models to better account for an exit price, which does not impact our financial statements, but does have an impact on our disclosures, as provided in Footnote 3.
ASU 2017-12, Derivatives and Hedging (Topic 815): Targeted Improvements to Employee Share-Based Payment Accounting for Hedging Activities
 The purpose of this standard is to better align a company’s financial reporting for hedging activities with the economic objectives of those activities. The standard is effective for public business entities for fiscal years beginning after December 15, 2018, with early adoption, including adoption in an interim period, permitted. The standard requires entities to recognizea modified retrospective transition method that requires recognition of the income tax effectscumulative effect of share-based awardsthe change on the opening balance of each affected component of equity in the income statement when the awards vest or are settled (i.e. the additional paid-in capital pools will be eliminated). The standard provides an entity the option to make an entity-wide accounting policy election to either estimate the number of awards that are expected to vest or account for forfeitures when they occur. The standard also requires that excess tax benefits be reflected in the operating section of the statement of cash flows rather thanfinancial position as of the investing section and to make an election to adopt this requirement either on a retrospective or prospective basis.date of adoption. January 1, 20172018 Upon
We early adopted this guidance in the first quarter. The adoption of this ASU, there was noguidance did not have a material impact from the cumulative effect adjustment to retained earnings. We elected to account for forfeitures when they occur and to reflect excess tax benefits in the operating section of the statement of cash flows on a prospective basis.our consolidated financial statements at transition.

3.FAIR VALUE
Fair Value Measurement
Fair value is defined as the exchange price that would be received for an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. For a discussion of the Company’s valuation methodologies for assets and liabilities measured at fair value and the fair value hierarchy, see Note 203 of our 20162017 Annual Report on Form 10-K.

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ZIONS BANCORPORATION AND SUBSIDIARIES

Quantitative Disclosure by Fair Value Hierarchy
Assets and liabilities measured at fair value by class on a recurring basis are summarized as follows:
(In millions)September 30, 2017June 30, 2018
Level 1 Level 2 Level 3 TotalLevel 1 Level 2 Level 3 Total
ASSETS              
Investment securities:              
Available-for-sale: 1
              
U.S. Treasury, agencies and corporations$25
 $13,814
 $
 $13,839
$25
 $13,266
 $
 $13,291
Municipal securities  1,291
 

 1,291
  1,312
 

 1,312
Other debt securities  25
   25
  24
   24
Money market mutual funds and other86
 1
   87
111
 15,131
 
 15,242
Total Available-for-sale25
 14,602
 
 14,627
Trading account  56
   56
89
 118
   207
Other noninterest-bearing investments:              
Bank-owned life insurance  504
   504
  513
   513
Private equity investments  

 93
 93
  

 102
 102
Other assets:              
Agriculture loan servicing and interest-only strips
 

 19
 19

 

 18
 18
Deferred compensation plan assets97
 

 

 97
108
 

 

 108
Derivatives:              
Interest rate swaps and forwards  1
   1
  1
   1
Interest rate swaps for customers  36
   36
  22
   22
Foreign currency exchange contracts6
     6
6
     6
6
 37
 
 43
$214
 $15,728
 $112
 $16,054
Total Assets$228
 $15,256
 $120
 $15,604
LIABILITIES              
Securities sold, not yet purchased$48
 $
 $
 $48
$44
 $
 $
 $44
Other liabilities:              
Deferred compensation plan obligations97
 
 
 97
108
 
 
 108
Derivatives:              
Interest rate swaps for customers  30
   30
  65
   65
Foreign currency exchange contracts5
     5
5
     5
5
 30
 
 35
$150
 $30
 $
 $180
Total Liabilities$157
 $65
 $
 $222
1 We used a third-party pricing service to measure fair value for approximately 92%95% of our AFS Level 2 securities.

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ZIONS BANCORPORATION AND SUBSIDIARIES

(In millions)December 31, 2016December 31, 2017
Level 1 Level 2 Level 3 TotalLevel 1 Level 2 Level 3 Total
ASSETS              
Investment securities:              
Available-for-sale: 1
              
U.S. Treasury, agencies and corporations$
 $12,009
 $
 $12,009
$25
 $13,706
 $
 $13,731
Municipal securities  1,154
 

 1,154
  1,334
 

 1,334
Other debt securities  24
 

 24
  24
 

 24
Money market mutual funds and other184
 1
   185
71
 1
   72
184
 13,188
 
 13,372
Total Available-for-sale96
 15,065
 
 15,161
Trading account  115
   115
  148
   148
Other noninterest-bearing investments:              
Bank-owned life insurance  497
   497
  507
   507
Private equity investments 2
18
 

 73
 91
Private equity investments
 

 95
 95
Other assets:              
Agriculture loan servicing and interest-only strips
 

 20
 20

 

 18
 18
Deferred compensation plan assets91
 

 

 91
102
 

 

 102
Derivatives:              
Interest rate swaps and forwards  4
   4
  1
   1
Interest rate swaps for customers  49
   49
  28
   28
Foreign currency exchange contracts11
     11
9
     9
11
 53
 
 64
$304
 $13,853
 $93
 $14,250
Total Assets$207
 $15,749
 $113
 $16,069
LIABILITIES              
Securities sold, not yet purchased$25
 $
 $
 $25
$95
 $
 $
 $95
Other liabilities: ��            
Deferred compensation plan obligations91
 
 
 91
102
 
 
 102
Derivatives:              
Interest rate swaps and forwards  1
   1
Interest rate swaps for customers  49
   49
  33
   33
Foreign currency exchange contracts9
     9
7
     7
9
 50
 
 59
$125
 $50
 $
 $175
Total Liabilities$204
 $33
 $
 $237
1 We used a third-party pricing service to measure fair value for approximately 91%92% of our AFS Level 2 securities.
2 The Level 1 private equity investments amount relates to the portion of our SBIC investments that are now publicly traded.
Level 3 Valuations
Private Equity Investments
Private equity investments (“PEIs”) are generally measured under Level 3. Certain investments that have converted to being publicly tradedpublicly-traded are measured under Level 1. The majority of these private equity investments (“PEIs”)PEIs are held in Zions’ Small Business Investment Company (“SBIC”) and are early stageearly-stage venture investments. The fair value measurements of these investments are updated at least on a quarterly basis, including whenever a new round of financing occurs. Certain of these investments are measured using multiples of operating performance. The fair value measurements of PEIs are reviewed on a quarterly basis by the Securities Valuation Committee. The Equity Investments Committee, consisting of executives familiar with the investments, reviews periodic financial information, including audited financial statements when available.
Certain valuation analytics may be employed that include current and projected financial performance, recent financing activities, economic and market conditions, market comparables, market liquidity, sales restrictions, and other factors. A significant change in the expected performance of the individual investment would result in a change in the fair value measurement of the investment. The amount of unfunded commitments to invest is

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disclosed in Note 5.5. Certain restrictions apply for the redemption of these investments and certain investments are prohibited by the Volcker Rule. See discussions in Note 5.5.

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ZIONS BANCORPORATION AND SUBSIDIARIES

Agriculture Loan Servicing
This asset results from our servicing of agriculture loans approved and funded by Federal Agricultural Mortgage Corporation (“FAMC”). We provide this servicing under an agreement with FAMC for loans they own. The asset’s fair value represents our projection of the present value of future cash flows measured under Level 3 using discounted cash flow methodologies.
Interest-Only Strips
Interest-only strips are created as a by-product of the securitization process. When the guaranteed portions of Small Business Administration (“SBA”) 7(a) loans are pooled, interest-only strips may be created in the pooling process. The asset’s fair value represents our projection of the present value of future cash flows measured under Level 3 using discounted cash flow methodologies.
Reconciliation of Level 3 Fair Value Measurements
The following reconciles the beginning and ending balances of assets and liabilities that are measured at fair value by class on a recurring basis using Level 3 inputs:
Level 3 InstrumentsLevel 3 Instruments
Three Months Ended Nine Months EndedThree Months Ended Six Months Ended
September 30, 2017 September 30, 2016 September 30, 2017 September 30, 2016June 30, 2018 June 30, 2017 June 30, 2018 June 30, 2017
(In millions)Private
equity
investments
 Ag loan svcg and int-only strips Private
equity
investments
 Ag loan svcg and int-only strips Private
equity
investments
 Ag loan svcg and int-only strips Private
equity
investments
 Ag loan svcg and int-only stripsPrivate
equity
investments
 Ag loan svcg and int-only strips Private
equity
investments
 Ag loan svcg and int-only strips Private
equity
investments
 Ag loan svcg and int-only strips Private
equity
investments
 Ag loan svcg and int-only strips
                              
Balance at beginning of period$82
 $19
 $64
 $18
 $73
 $20
 $58
 $14
$100
 $18
 $78
 $20
 $95
 $18
 $73
 $20
Securities gains, net5
 
 1
 
 7
 
 3
 
Securities gains (losses), net1
 
 (1) 
 1
 
 2
 
Other noninterest income
 
 
 2
 
 (1) 
 6

 
 
 (1) 
 
 
 (1)
Purchases6
 
 2
 
 18
 
 6
 
1
 
 5
 
 6
 
 12
 
Redemptions and paydowns
 
 
 
 (5) 
 
 

 
 
 
 
 
 (5) 
Balance at end of period$93
 $19
 $67
 $20
 $93
 $19
 $67
 $20
$102
 $18
 $82
 $19
 $102
 $18
 $82
 $19
No transfers of assets or liabilities occurred among Levels 1, 2 or 3 for the three and ninesix months ended SeptemberJune 30, 20172018 and 2016.2017.
The reconciliation of Level 3 instruments includes the following realized gains and losses in the statement of income:
(In millions)Three Months Ended
September 30,
 Nine Months Ended
September 30,
 
2017 2016 2017 2016
        
Securities gains, net$
 $4
 $3
 $4
(In millions)Three Months Ended
June 30,
 Six Months Ended
June 30,
 
2018 2017 2018 2017
        
Securities gains (losses), net$
 $
 $(3) $3
Nonrecurring Fair Value Measurements
Included in the balance sheet amounts are the following amounts of assets that had fair value changes measured on a nonrecurring basis.
(In millions)Fair value at September 30, 2017 Fair value at December 31, 2016Fair value at June 30, 2018 Fair value at December 31, 2017
Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 TotalLevel 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total
ASSETS                              
Private equity investments$
 $
 $1
 $1
 $
 $
 $1
 $1
$
 $
 $
 $
 $
 $
 $1
 $1
Impaired loans
 17
 
 17
 
 52
 
 52

 24
 
 24
 
 9
 
 9
Other real estate owned
 
 
 
 
 1
 
 1

 1
 
 1
 
 
 
 
$
 $17
 $1
 $18
 $
 $53
 $1
 $54
Total$
 $25
 $
 $25
 $
 $9
 $1
 $10

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The previous fair values may not be current as of the dates indicated, but rather as of the date the fair value change occurred, such as a charge for impairment. Accordingly, carrying values may not equal current fair value.
Gains (losses) from fair value changesGains (losses) from fair value changes
(In millions)Three Months Ended
September 30,
 Nine Months Ended
September 30,
Three Months Ended
June 30,
 Six Months Ended
June 30,
2017 2016 2017 20162018 2017 2018 2017
ASSETS              
Private equity investments$
 $
 $(1) $
$
 $
 $
 $(1)
Impaired loans(1) (5) (8) (34)(1) (6) (5) (7)
Other real estate owned
 (1) 
 (1)
 
 (1) 
$(1) $(6) $(9) $(35)
Total$(1) $(6) $(6) $(8)
During the three and nine months ended SeptemberJune 30, we recognized $1 million and $2 millionan insignificant amount of net gains in 20172018 and an insignificant amount and $3 million in 20162017 from the sale of other real estate owned (“OREO”) properties. During the six months endedJune 30, we recognized approximately $1 million of net gains in 2018 and an insignificant amount in 2017 from the sale of OREO properties that had a carrying value at the time of sale of approximately $5$2 million and $8$3 million during the ninesix months ended SeptemberJune 30, 20172018 and 2016,2017, respectively. Previous to their sale in these periods, we recognized impairment on these properties of an insignificant amount in 20172018 and 2016.2017.
Private equity investments carried at cost were measured at fair value for impairment purposes according to the methodology previously discussed for these investments. Amounts of PEIs carried at cost were $10$10 million at Septemberboth June 30, 20172018 and $13 million at December 31, 2016.2017. Amounts of other noninterest-bearing investments carried at cost were $324$341 million at SeptemberJune 30, 20172018 and $211$338 million at December 31, 2016,2017, which were comprised of Federal Reserve and Federal Home Loan Bank (“FHLB”) stock. Private equity investments accounted for using the equity method were $35$38 million at SeptemberJune 30, 20172018 and $38$36 million at December 31, 2016.2017.
Impaired (or nonperforming) loans that are collateral dependentcollateral-dependent were measured at fair value based on the fair value of the collateral. OREO was measured initially at fair value based on collateral appraisals at the time of transfer and subsequently at the lower of cost or fair value. For additional information regarding the measurement of fair value for impaired loans, collateral-dependent loans, and OREO, see Note 203 of our 20162017 Annual Report on Form 10-K.
Fair Value of Certain Financial Instruments
Following is a summary of the carrying values and estimated fair values of certain financial instruments:
September 30, 2017 December 31, 2016June 30, 2018 December 31, 2017
(In millions)
Carrying
value
 
Estimated
fair value
 Level 
Carrying
value
 
Estimated
fair value
 Level
Carrying
value
 
Estimated
fair value
 Level 
Carrying
value
 
Estimated
fair value
 Level
Financial assets:                
HTM investment securities$746
 $743
 2 $868
 $850
 2$878
 $866
 2 $770
 $762
 2
Loans and leases (including loans held for sale), net of allowance43,686
 43,196
 3 42,254
 42,111
 344,824
 43,715
 3 44,306
 44,226
 3
Financial liabilities:                
Time deposits2,909
 2,890
 2 2,757
 2,744
 24,011
 3,985
 2 3,115
 3,099
 2
Other short-term borrowings3,250
 3,250
 2 500
 500
 23,650
 3,650
 2 3,600
 3,600
 2
Long-term debt383
 406
 2 535
 552
 2383
 390
 2 383
 402
 2
This summary excludes financial assets and liabilities for which carrying value approximates fair value and financial instruments that are recorded at fair value on a recurring basis. With the adoption of ASU 2016-01, we have updated our process for estimating the fair value for our loans and leases, net of allowance. Our updated process identifies an exit price using current origination rates, making certain adjustments based on credit and utilizing publicly available rates and indices. For additional information regarding the financial instruments within the scope of this disclosure, and the methods and significant assumptions used to estimate their fair value, see Note 203 of our 20162017 Annual Report on Form 10-K.


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4.OFFSETTING ASSETS AND LIABILITIES
Gross and net information for selected financial instruments in the balance sheet is as follows:
 September 30, 2017 June 30, 2018
(In millions)       Gross amounts not offset in the balance sheet         Gross amounts not offset in the balance sheet  
Description Gross amounts recognized Gross amounts offset in the balance sheet Net amounts presented in the balance sheet Financial instruments Cash collateral received/pledged Net amount Gross amounts recognized Gross amounts offset in the balance sheet Net amounts presented in the balance sheet Financial instruments Cash collateral received/pledged Net amount
Assets:                        
Federal funds sold and security resell agreements $779
 $(312) $467
 $
 $
 $467
 $607
 $(49) $558
 $
 $
 $558
Derivatives (included in other assets) 43
 
 43
 (15) 
 28
 29
 
 29
 (4) (9) 16
Total assets $822
 $(312) $510
 $(15) $
 $495
 $636
 $(49) $587
 $(4) $(9) $574
Liabilities:                        
Federal funds and other short-term borrowings $4,936
 $(312) $4,624
 $
 $
 $4,624
 $4,207
 $(49) $4,158
 $
 $
 $4,158
Derivatives (included in other liabilities) 35
 
 35
 (15) (11) 9
 70
 
 70
 (4) (1) 65
Total Liabilities $4,971
 $(312) $4,659
 $(15) $(11) $4,633
 $4,277
 $(49) $4,228
 $(4) $(1) $4,223
 December 31, 2016 December 31, 2017
(In millions)       Gross amounts not offset in the balance sheet         Gross amounts not offset in the balance sheet  
Description Gross amounts recognized Gross amounts offset in the balance sheet Net amounts presented in the balance sheet Financial instruments Cash collateral received/pledged Net amount Gross amounts recognized Gross amounts offset in the balance sheet Net amounts presented in the balance sheet Financial instruments Cash collateral received/pledged Net amount
Assets:                        
Federal funds sold and security resell agreements $568
 $
 $568
 $
 $
 $568
 $809
 $(295) $514
 $
 $
 $514
Derivatives (included in other assets) 64
 
 64
 (17) 
 47
 38
 
 38
 (9) (1) 28
Total assets $632
 $
 $632
 $(17) $
 $615
 $847
 $(295) $552
 $(9) $(1) $542
Liabilities:                        
Federal funds and other short-term borrowings $827
 $
 $827
 $
 $
 $827
 $5,271
 $(295) $4,976
 $
 $
 $4,976
Derivatives (included in other liabilities) 59
 
 59
 (17) (17) 25
 40
 
 40
 (9) (6) 25
Total Liabilities $886
 $
 $886
 $(17) $(17) $852
 $5,311
 $(295) $5,016
 $(9) $(6) $5,001
Security repurchase and reverse repurchase (“resell”) agreements are offset, when applicable, in the balance sheet according to master netting agreements. Security repurchase agreements are included with “Federal funds and other short-term borrowings.” Derivative instruments may be offset under their master netting agreements; however, for accounting purposes, we present these items on a gross basis in the Company’s balance sheet. See Note 7 for further information regarding derivative instruments.
5.INVESTMENTS
Investment Securities
Securities are classified as HTM, AFS or trading. HTM securities, which management has the intent and ability to hold until maturity, are carried at amortized cost. AFS securities are carried at fair value and unrealized gains and losses are reported as net increases or decreases to accumulated other comprehensive income (“AOCI”). Realized gains and losses on AFS securities are determined by using the cost basis of each individual security. Trading securities are carried at fair value with gains and losses recognized in current period earnings. The purchase premiums and discounts for both HTM and AFS securities are amortized and accreted at a constant effective yield to the contractual maturity date and no assumption is made concerning prepayments. As principal prepayments occur, the portion of the unamortized premium or discount associated with the principal reduction is recognized asin interest

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income in the period the principal is reduced. Note 203 of our 20162017 Annual Report on Form 10-K discusses the process to estimate fair value for investment securities.
September 30, 2017June 30, 2018
(In millions)
Amortized
cost
 Gross unrealized gains Gross unrealized losses 
Estimated
fair value
Amortized
cost
 Gross unrealized gains Gross unrealized losses 
Estimated
fair value
Held-to-maturity              
Municipal securities$746
 $7
 $10
 $743
$878
 $4
 $16
 $866
Available-for-sale              
U.S. Treasury securities25
 
 
 25
25
 
 
 25
U.S. Government agencies and corporations:              
Agency securities1,839
 5
 4
 1,840
1,683
 
 26
 1,657
Agency guaranteed mortgage-backed securities9,748
 21
 86
 9,683
9,831
 8
 301
 9,538
Small Business Administration loan-backed securities2,281
 19
 9
 2,291
2,115
 1
 45
 2,071
Municipal securities1,281
 15
 5
 1,291
1,333
 2
 23
 1,312
Other debt securities25
 
 
 25
25
 
 1
 24
15,199
 60
 104
 15,155
Money market mutual funds and other87
 
 
 87
15,286
 60
 104
 15,242
Total$16,032
 $67
 $114
 $15,985
Total available-for-sale15,012
 11
 396
 14,627
Total investment securities$15,890
 $15
 $412
 $15,493
December 31, 2016December 31, 2017
(In millions)Amortized
cost
 Gross unrealized gains Gross unrealized losses Estimated
fair value
Amortized
cost
 Gross unrealized gains Gross unrealized losses Estimated
fair value
Held-to-maturity              
Municipal securities$868
 $5
 $23
 $850
$770
 $5
 $13
 $762
Available-for-sale              
U.S. Treasury securities25
 
 
 25
U.S. Government agencies and corporations:              
Agency securities1,846
 2
 9
 1,839
1,830
 1
 13
 1,818
Agency guaranteed mortgage-backed securities7,986
 7
 110
 7,883
9,798
 9
 141
 9,666
Small Business Administration loan-backed securities2,298
 8
 18
 2,288
2,227
 10
 15
 2,222
Municipal securities1,182
 1
 29
 1,154
1,336
 9
 11
 1,334
Other debt securities25
 
 1
 24
25
 
 1
 24
13,337
 18
 167
 13,188
Total available-for-sale debt securities15,241
 29
 181
 15,089
Money market mutual funds and other184
 
 
 184
72
 
 
 72
13,521
 18
 167
 13,372
Total$14,389
 $23
 $190
 $14,222
Total available-for-sale15,313
 29
 181
 15,161
Total investment securities$16,083
 $34
 $194
 $15,923
Maturities
The amortized cost and estimated fair value of investment debt securities are shown subsequently as of SeptemberJune 30, 2017,2018, by expected timing of principal payments. Actual principal payments may differ from contractual or expected principal payments because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties.
 September 30, 2017
 Held-to-maturity Available-for-sale
(In millions)
Amortized
cost
 
Estimated
fair value
 
Amortized
cost
 
Estimated
fair value
        
Principal return in one year or less$99
 $100
 $2,296
 $2,285
Principal return after one year through five years282
 284
 5,406
 5,384
Principal return after five years through ten years186
 188
 4,784
 4,779
Principal return after ten years179
 171
 2,713
 2,707
Total$746
 $743
 $15,199
 $15,155
 June 30, 2018
 Held-to-maturity Available-for-sale
(In millions)
Amortized
cost
 
Estimated
fair value
 
Amortized
cost
 
Estimated
fair value
        
Due in one year or less$295
 $294
 $1,773
 $1,738
Due after one year through five years380
 376
 4,444
 4,330
Due after five years through ten years147
 143
 4,565
 4,445
Due after ten years56
 53
 4,230
 4,114
Total$878
 $866
 $15,012
 $14,627

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The following is a summary of the amount of gross unrealized losses for investmentdebt securities and the estimated fair value by length of time the securities have been in an unrealized loss position:
September 30, 2017June 30, 2018
Less than 12 months 12 months or more TotalLess than 12 months 12 months or more Total
(In millions)
Gross
unrealized
losses
 
Estimated
fair
value
 
Gross
unrealized
losses
 
Estimated
fair
value
 
Gross
unrealized
losses
 
Estimated
fair
value
Gross
unrealized
losses
 
Estimated
fair
value
 
Gross
unrealized
losses
 
Estimated
fair
value
 
Gross
unrealized
losses
 
Estimated
fair
value
Held-to-maturity                      
Municipal securities$1
 $175
 $9
 $132
 $10
 $307
$4
 $259
 $12
 $306
 $16
 $565
Available-for-sale                      
U.S. Government agencies and corporations:                      
Agency securities3
 576
 1
 331
 4
 907
16
 899
 10
 655
 26
 1,554
Agency guaranteed mortgage-backed securities74
 6,266
 12
 677
 86
 6,943
118
 4,531
 183
 4,175
 301
 8,706
Small Business Administration loan-backed securities1
 149
 8
 749
 9
 898
21
 1,427
 24
 585
 45
 2,012
Municipal securities3
 321
 2
 122
 5
 443
14
 860
 9
 216
 23
 1,076
Other
 
 
 
 
 

 
 1
 13
 1
 13
Available-for-sale total81
 7,312
 23
 1,879
 104
 9,191
Total available-for-sale169
 7,717
 227
 5,644
 396
 13,361
Total$82
 $7,487
 $32
 $2,011
 $114
 $9,498
$173
 $7,976
 $239
 $5,950
 $412
 $13,926
December 31, 2016December 31, 2017
Less than 12 months 12 months or more TotalLess than 12 months 12 months or more Total
(In millions)
Gross
unrealized
losses
 
Estimated
 fair
 value
 
Gross
unrealized
losses
 
Estimated
 fair
 value
 
Gross
unrealized
losses
 
Estimated
 fair
 value
Gross
unrealized
losses
 
Estimated
 fair
 value
 
Gross
unrealized
losses
 
Estimated
 fair
 value
 
Gross
unrealized
losses
 
Estimated
 fair
 value
Held-to-maturity                      
Municipal securities$15
 $467
 $8
 $61
 $23
 $528
$3
 $263
 $10
 $292
 $13
 $555
Available-for-sale                      
U.S. Government agencies and corporations:                      
Agency securities9
 950
 
 127
 9
 1,077
6
 808
 7
 808
 13
 1,616
Agency guaranteed mortgage-backed securities102
 6,649
 7
 326
 109
 6,975
29
 3,609
 112
 4,721
 141
 8,330
Small Business Administration loan-backed securities3
 527
 16
 841
 19
 1,368
3
 408
 12
 649
 15
 1,057
Municipal securities28
 992
 
 9
 28
 1,001
6
 554
 5
 230
 11
 784
Other
 
 2
 14
 2
 14

 
 1
 14
 1
 14
Available-for-sale total142
 9,118
 25
 1,317
 167
 10,435
Total available-for-sale44
 5,379
 137
 6,422
 181
 11,801
Total$157
 $9,585
 $33
 $1,378
 $190
 $10,963
$47
 $5,642
 $147
 $6,714
 $194
 $12,356
At SeptemberJune 30, 20172018 and December 31, 2016,2017, respectively, 360653 and 642667 HTM and 1,4464,317 and 2,3982,262 AFS investment securities were in an unrealized loss position.
Other-Than-Temporary Impairment
Ongoing Policy
The Company did not recognize any other-than-temporary impairment (“OTTI”) on its investment securities portfolio during the first six months of 2018. We review investment securities on a quarterly basis for the presence of other-than-temporary impairment (“OTTI”).OTTI. Unrealized losses relate to changes in interest rates subsequent to purchase and are not attributable to credit. At SeptemberJune 30, 2017,2018, we did not have an intent to sell identified securities with unrealized losses or initiate such sales, and we believe it is not more likely than not we would be required to sell such securities before recovery of their amortized cost basis. Therefore, these securities did not have any OTTI recognized during the third quarter of 2017. For additional information on our policy and evaluation process relating to OTTI, see Note 5 of our 20162017 Annual Report on Form 10-K.

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ZIONS BANCORPORATION AND SUBSIDIARIES

The following summarizes gains and losses including OTTI, of which there was none, that were recognized in the statement of income:
  Three Months Ended Nine Months Ended
  September 30, 2017 September 30, 2016 September 30, 2017 September 30, 2016
 (In millions)Gross gains Gross losses Gross gains Gross losses Gross gains 
Gross
losses
 Gross gains 
Gross
 losses
 
 Investment securities:               
 Other noninterest-bearing investments$5
 $
 $8
 $
 $20
 $7
 $15
 $4
 
Net gains 1
  $5
   $8
   $13
   $11
  Three Months Ended June 30, Six Months Ended June 30,
  2018 2017 2018 2017
 (In millions)Gross gains Gross losses Gross gains Gross losses Gross gains Gross losses Gross gains Gross losses
 
 Investment securities:               
 Other noninterest-bearing investments$4
 $3
 $4
 $2
 $6
 $5
 $14
 $7
 
Net gains 1
  $1
   $2
   $1
   $7
1 Net gains were recognized in securities gains, net in the statement of income.
Interest income by security type is as follows:
 Three Months Ended June 30,
(In millions)2018 2017
 Taxable Nontaxable Total Taxable Nontaxable Total
Investment securities:           
Held-to-maturity$3
 $3
 $6
 $2
 $3
 $5
Available-for-sale70
 7
 77
 71
 7
 78
Trading2
 
 2
 1
 
 1
Total$75
 $10
 $85
 $74
 $10
 $84
Six Months Ended June 30,
(In millions)Three Months Ended
September 30, 2017
 Nine Months Ended
September 30, 2017
2018 2017
Taxable Nontaxable Total Taxable Nontaxable TotalTaxable Nontaxable Total Taxable Nontaxable Total
Investment securities:                      
Held-to-maturity$2
 $3
 $5
 $7
 $10
 $17
$5
 $7
 $12
 $5
 $7
 $12
Available-for-sale72
 6
 78
 209
 18
 227
142
 13
 155
 137
 12
 149
Trading1
 
 1
 2
 
 2
3
 
 3
 1
 
 1
Total$75
 $9
 $84
 $218
 $28
 $246
$150
 $20
 $170
 $143
 $19
 $162
(In millions)Three Months Ended
September 30, 2016
 Nine Months Ended
September 30, 2016
 Taxable Nontaxable Total Taxable Nontaxable Total
Investment securities:           
Held-to-maturity$2
 $3
 $5
 $7
 $9
 $16
Available-for-sale40
 3
 43
 118
 8
 126
Trading1
 
 1
 1
 
 1
Total$43
 $6
 $49
 $126
 $17
 $143
Investment securities with a carrying value of $2.3$2.1 billion at Septemberboth June 30, 20172018 and $1.4 billion at December 31, 20162017 were pledged to secure public and trust deposits, advances, and for other purposes as required by law. Securities are also pledged as collateral for security repurchase agreements.
Private Equity Investments
Effect of Volcker Rule
The Company’s PEIs are subject to the provisions of the Dodd-Frank Act.Wall Street Reform and Consumer Protection Act (“Dodd-Frank Act”). The Volcker Rule of the Dodd-Frank Act prohibits banks and bank holding companies from holding PEIs, except for SBIC funds and certain other permitted exclusions, beyond a required deadline. The Federal Reserve Board (“FRB”) announced in December 2016 that it would allow banks to apply for an additional five-year extension beyond the July 21, 2017 deadline to comply with the Dodd-Frank Act requirement for these investments. The Company applied for and was granted an extension for its eligible PEIs. All positions in the remaining portfolio of PEIs are subject to the extended deadline or other applicable exclusions.
Of the recorded PEIs of $138$151 million at SeptemberJune 30, 2017,2018, approximately $4$3 million remain prohibited by the Volcker Rule. At SeptemberJune 30, 2017,2018, we have $27$32 million of unfunded commitments for PEIs, of which approximately $4$3 million relate to prohibited PEIs. We currently do not believe that this divestiture requirement will ultimately have a material impact on our financial statements. See other discussions related to private equity investments in Note 3.

Table of Contents
ZIONS BANCORPORATION AND SUBSIDIARIES

6.LOANS AND ALLOWANCE FOR CREDIT LOSSES
Loans and Loans Held for Sale
Loans are summarized as follows according to major portfolio segment and specific loan class:
(In millions)September 30,
2017
 December 31,
2016
June 30,
2018
 December 31,
2017
      
Loans held for sale$71
 $172
$84
 $44
Commercial:      
Commercial and industrial$14,041
 $13,452
$14,134
 $14,003
Leasing343
 423
358
 364
Owner-occupied7,082
 6,962
7,365
 7,288
Municipal1,073
 778
1,388
 1,271
Total commercial22,539
 21,615
23,245
 22,926
Commercial real estate:      
Construction and land development2,170
 2,019
2,202
 2,021
Term8,944
 9,322
8,771
 9,103
Total commercial real estate11,114
 11,341
10,973
 11,124
Consumer:      
Home equity credit line2,745
 2,645
2,825
 2,777
1-4 family residential6,522
 5,891
6,861
 6,662
Construction and other consumer real estate558
 486
661
 597
Bankcard and other revolving plans490
 481
490
 509
Other188
 190
175
 185
Total consumer10,503
 9,693
11,012
 10,730
Total loans$44,156
 $42,649
$45,230
 $44,780
Loan balances are presented net of unearned income and fees, which amounted to $6362 million at SeptemberJune 30, 20172018 and $77$65 million at December 31, 20162017.
Owner-occupied and commercial real estate loans include unamortized premiums of approximately $1715 million at SeptemberJune 30, 20172018 and $20$16 million at December 31, 20162017.
Municipal loans generally include loans to municipalitiesstate and local governments (“municipalities”) with the debt service being repaid from general funds or pledged revenues of the municipal entity, or to private commercial entities or 501(c)(3) not-for-profit entities utilizing a pass-through municipal entity to achieve favorable tax treatment.
Land development loans included in the construction and land development loan class were $238243 million at SeptemberJune 30, 20172018 and $290220 million at December 31, 20162017.
Loans with a carrying value of approximately $25.4$24.4 billion at SeptemberJune 30, 20172018 and $24.0$25.6 billion at December 31, 20162017 have been pledged at the Federal Reserve andor the FHLB of Des Moines as collateral for current and potential borrowings.
We sold loans totaling $146$206 million and $696$312 million for the three and ninesix months ended SeptemberJune 30, 2017,2018 and $413$234 million and $1.0 billion$550 million for the three and ninesix months ended SeptemberJune 30, 2016,2017, respectively, that were classified as loans held for sale. The sold loans were derecognized from the balance sheet. Loans classified as loans held for sale primarily consist of conforming residential mortgages and the guaranteed portion of SBA loans. The loans are mainly sold to U.S. government agencies or participated to third parties. At times, we have continuing involvement in the transferred loans in the form of servicing rights or a guarantee from the respective issuer. Amounts added to loans held for sale during these same periods were $176was $235 million and $640$400 million for the three and ninesix months ended SeptemberJune 30, 2017,2018 and $387$176 million and $979$479 million for the three and ninesix months ended SeptemberJune 30, 2016,2017, respectively. See Note 5 for further information regarding guaranteed securities.

Table of Contents
ZIONS BANCORPORATION AND SUBSIDIARIES

The principal balance of sold loans for which we retain servicing was approximately $2.1$2.2 billion at Septemberboth June 30, 2017,2018 and $2.0 billion at December 31, 2016.2017. Income from loans sold, excluding servicing, was $1$4 million and $9$7 million for the three and six months ended June 30, 2018, and $4 million and $8 million for the three and ninesix months ended SeptemberJune 30, 2017, and $6 million and $15 million for the three and nine months ended September 30, 2016, respectively.
Allowance for Credit Losses
The ACLallowance for credit losses (“ACL”) consists of the allowance for loan and lease losses (“ALLL”) and the reserve for unfunded lending commitments (“RULC”). The ALLL represents our estimate of probable and estimable losses inherent in the loan and lease portfolio as of the balance sheet date. We also estimate a reserve for potential losses associated with off-balance sheet commitments, including standby letters of credit. We determine the RULC using the same procedures and methodologies that we use for the ALLL.
For additional information regarding our policies and methodologies used to estimate the ACL, see Note 6 of our 20162017 Annual Report on Form 10-K.
Changes in the allowance for credit losses are summarized as follows:

Changes in the allowance for credit losses are summarized as follows:

Changes in the allowance for credit losses are summarized as follows:

Three Months Ended September 30, 2017Three Months Ended June 30, 2018
(In millions)Commercial 
Commercial
real estate
 Consumer TotalCommercial 
Commercial
real estate
 Consumer Total
Allowance for loan losses              
Balance at beginning of period$393
 $116
 $35
 $544
$329
 $104
 $40
 $473
Additions:       
Provision for loan losses(4) (7) 16
 5
(18) 15
 8
 5
Deductions:       
Gross loan and lease charge-offs(16) (4) (5) (25)10
 
 3
 13
Recoveries12
 2
 3
 17
20
 3
 2
 25
Net loan and lease charge-offs(4) (2) (2) (8)
Net loan and lease charge-offs (recoveries)(10) (3) 1
 (12)
Balance at end of period$385
 $107
 $49
 $541
$321
 $122
 $47
 $490
Reserve for unfunded lending commitments              
Balance at beginning of period$53
 $10
 $
 $63
$40
 $11
 $
 $51
Provision charged to earnings(4) 
 
 (4)
Provision for unfunded lending commitments3
 4
 
 7
Balance at end of period$49
 $10
 $
 $59
$43
 $15
 $
 $58
Total allowance for credit losses at end of period              
Allowance for loan losses$385
 $107
 $49
 $541
$321
 $122
 $47
 $490
Reserve for unfunded lending commitments49
 10
 
 59
43
 15
 
 58
Total allowance for credit losses$434
 $117
 $49
 $600
$364
 $137
 $47
 $548

Table of Contents
ZIONS BANCORPORATION AND SUBSIDIARIES

Nine Months Ended September 30, 2017Six Months Ended June 30, 2018
(In millions)Commercial 
Commercial
real estate
 Consumer TotalCommercial 
Commercial
real estate
 Consumer Total
Allowance for loan losses              
Balance at beginning of period$420
 $116
 $31
 $567
$371
 $103
 $44
 $518
Additions:       
Provision for loan losses27
 (15) 23
 35
(58) 14
 9
 (35)
Deductions:       
Gross loan and lease charge-offs(98) (6) (13) (117)30
 
 9
 39
Recoveries36
 12
 8
 56
38
 5
 3
 46
Net loan and lease (charge-offs) recoveries(62) 6
 (5) (61)
Net loan and lease charge-offs (recoveries)(8) (5) 6
 (7)
Balance at end of period$385
 $107
 $49
 $541
$321
 $122
 $47
 $490
Reserve for unfunded lending commitments              
Balance at beginning of period$54
 $11
 $
 $65
$48
 $10
 $
 $58
Provision credited to earnings(5) (1) 
 (6)
Provision for unfunded lending commitments(5) 5
 
 
Balance at end of period$49
 $10
 $
 $59
$43
 $15
 $
 $58
Total allowance for credit losses at end of period              
Allowance for loan losses$385
 $107
 $49
 $541
$321
 $122
 $47
 $490
Reserve for unfunded lending commitments49
 10
 
 59
43
 15
 
 58
Total allowance for credit losses$434
 $117
 $49
 $600
$364
 $137
 $47
 $548
Three Months Ended September 30, 2016Three Months Ended June 30, 2017
(In millions)Commercial 
Commercial
real estate
 Consumer TotalCommercial 
Commercial
real estate
 Consumer Total
Allowance for loan losses              
Balance at beginning of period$457
 $121
 $30
 $608
$397
 $114
 $33
 $544
Additions:       
Provision for loan losses22
 (6) 3
 19
9
 (5) 3
 7
Deductions:       
Gross loan and lease charge-offs(48) (1) (5) (54)31
 1
 3
 35
Recoveries15
 7
 2
 24
18
 8
 2
 28
Net loan and lease (charge-offs) recoveries(33) 6
 (3) (30)
Net loan and lease charge-offs (recoveries)13
 (7) 1
 7
Balance at end of period$446
 $121
 $30
 $597
$393
 $116
 $35
 $544
Reserve for unfunded lending commitments              
Balance at beginning of period$54
 $11
 $
 $65
$51
 $9
 $
 $60
Provision credited to earnings(2) (1) 
 (3)
Provision for unfunded lending commitments3
 
 
 3
Balance at end of period$52
 $10
 $
 $62
$54
 $9
 $
 $63
Total allowance for credit losses at end of period              
Allowance for loan losses$446
 $121
 $30
 $597
$393
 $116
 $35
 $544
Reserve for unfunded lending commitments52
 10
 
 62
54
 9
 
 63
Total allowance for credit losses$498
 $131
 $30
 $659
$447
 $125
 $35
 $607

Table of Contents
ZIONS BANCORPORATION AND SUBSIDIARIES

Nine Months Ended September 30, 2016Six Months Ended June 30, 2017
(In millions)Commercial 
Commercial
real estate
 Consumer TotalCommercial 
Commercial
real estate
 Consumer Total
Allowance for loan losses              
Balance at beginning of period$454
 $114
 $38
 $606
$420
 $116
 $31
 $567
Additions:       
Provision for loan losses93
 5
 (3) 95
32
 (9) 7
 30
Deductions:       
Gross loan and lease charge-offs(137) (10) (12) (159)82
 2
 8
 92
Recoveries36
 12
 7
 55
23
 11
 5
 39
Net loan and lease (charge-offs) recoveries(101) 2
 (5) (104)
Net loan and lease charge-offs (recoveries)59
 (9) 3
 53
Balance at end of period$446
 $121
 $30
 $597
$393
 $116
 $35
 $544
Reserve for unfunded lending commitments              
Balance at beginning of period$58
 $16
 $1
 $75
$54
 $11
 $
 $65
Provision credited to earnings(6) (6) (1) (13)
Provision for unfunded lending commitments
 (2) 
 (2)
Balance at end of period$52
 $10
 $
 $62
$54
 $9
 $
 $63
Total allowance for credit losses at end of period              
Allowance for loan losses$446
 $121
 $30
 $597
$393
 $116
 $35
 $544
Reserve for unfunded lending commitments52
 10
 
 62
54
 9
 
 63
Total allowance for credit losses$498
 $131
 $30
 $659
$447
 $125
 $35
 $607
The ALLL and outstanding loan balances according to the Company’s impairment method are summarized as follows:
September 30, 2017June 30, 2018
(In millions)Commercial 
Commercial
real estate
 Consumer TotalCommercial 
Commercial
real estate
 Consumer Total
Allowance for loan losses:              
Individually evaluated for impairment$28
 $1
 $4
 $33
$9
 $5
 $3
 $17
Collectively evaluated for impairment357
 106
 45
 508
312
 117
 44
 473
Purchased loans with evidence of credit deterioration
 
 
 

 
 
 
Total$385
 $107
 $49
 $541
$321
 $122
 $47
 $490
Outstanding loan balances:              
Individually evaluated for impairment$352
 $78
 $70
 $500
$217
 $77
 $76
 $370
Collectively evaluated for impairment22,163
 11,026
 10,427
 43,616
23,028
 10,896
 10,936
 44,860
Purchased loans with evidence of credit deterioration24
 10
 6
 40

 
 
 
Total$22,539
 $11,114
 $10,503
 $44,156
$23,245
 $10,973
 $11,012
 $45,230
December 31, 2016December 31, 2017
(In millions)Commercial 
Commercial
real estate
 Consumer TotalCommercial 
Commercial
real estate
 Consumer Total
Allowance for loan losses:              
Individually evaluated for impairment$56
 $3
 $6
 $65
$26
 $1
 $4
 $31
Collectively evaluated for impairment364
 113
 25
 502
345
 102
 40
 487
Purchased loans with evidence of credit deterioration
 
 
 

 
 
 
Total$420
 $116
 $31
 $567
$371
 $103
 $44
 $518
Outstanding loan balances:              
Individually evaluated for impairment$466
 $78
 $75
 $619
$314
 $69
 $76
 $459
Collectively evaluated for impairment21,111
 11,231
 9,611
 41,953
22,598
 11,048
 10,648
 44,294
Purchased loans with evidence of credit deterioration38
 32
 7
 77
14
 7
 6
 27
Total$21,615
 $11,341
 $9,693
 $42,649
$22,926
 $11,124
 $10,730
 $44,780

Table of Contents
ZIONS BANCORPORATION AND SUBSIDIARIES

Nonaccrual and Past Due Loans
Loans are generally placed on nonaccrual status when payment in full of principal and interest is not expected, or the loan is 90 days or more past due as to principal or interest, unless the loan is both well secured and in the process of collection. For further discussion of our policies and processes regarding nonaccrual and past due loans, see Note 6 of our 20162017 Annual Report on Form 10-K.
Nonaccrual loans are summarized as follows:
(In millions)September 30,
2017
 December 31,
2016
June 30,
2018
 December 31,
2017
      
Loans held for sale$13
 $40
$
 $12
Commercial:      
Commercial and industrial$257
 $354
$142
 $195
Leasing8
 14
7
 8
Owner-occupied85
 74
63
 90
Municipal1
 1
1
 1
Total commercial351
 443
213
 294
Commercial real estate:      
Construction and land development6
 7
5
 4
Term41
 29
53
 36
Total commercial real estate47
 36
58
 40
Consumer:      
Home equity credit line11
 11
14
 13
1-4 family residential40
 36
56
 55
Construction and other consumer real estate1
 2
1
 
Bankcard and other revolving plans1
 1

 
Other1
 

 
Total consumer loans54
 50
71
 68
Total$452
 $529
$342
 $402

Table of Contents
ZIONS BANCORPORATION AND SUBSIDIARIES

Past due loans (accruing and nonaccruing) are summarized as follows:
September 30, 2017June 30, 2018
(In millions)Current 
30-89 days
past due
 
90+ days
past due
 
Total
past due
 
Total
loans
 
Accruing
loans
90+ days
past due
 
Nonaccrual
loans
that are
current 1
Current 
30-89 days
past due
 
90+ days
past due
 
Total
past due
 
Total
loans
 
Accruing
loans
90+ days
past due
 
Nonaccrual
loans
that are
current 1
                          
Loans held for sale$58
 $
 $13
 $13
 $71
 $
 $
$84
 $
 $
 $
 $84
 $
 $
Commercial:                          
Commercial and industrial$13,870
 $53
 $118
 $171
 $14,041
 $17
 $150
$14,030
 $59
 $45
 $104
 $14,134
 $3
 $93
Leasing343
 
 
 
 343
 
 8
356
 1
 1
 2
 358
 
 7
Owner-occupied7,021
 27
 34
 61
 7,082
 5
 49
7,324
 19
 22
 41
 7,365
 
 36
Municipal1,073
 
 
 
 1,073
 
 1
1,388
 
 
 
 1,388
 
 1
Total commercial22,307
 80
 152
 232
 22,539
 22
 208
23,098
 79
 68
 147
 23,245
 3
 137
Commercial real estate:                          
Construction and land development2,158
 6
 6
 12
 2,170
 1
 1
2,196
 1
 5
 6
 2,202
 
 
Term8,925
 8
 11
 19
 8,944
 2
 30
8,726
 36
 9
 45
 8,771
 1
 43
Total commercial real estate11,083
 14
 17
 31
 11,114
 3
 31
10,922
 37
 14
 51
 10,973
 1
 43
Consumer:                          
Home equity credit line2,735
 6
 4
 10
 2,745
 
 4
2,814
 4
 7
 11
 2,825
 
 5
1-4 family residential6,497
 10
 15
 25
 6,522
 
 20
6,830
 11
 20
 31
 6,861
 
 32
Construction and other consumer real estate547
 6
 5
 11
 558
 4
 
657
 4
 
 4
 661
 
 1
Bankcard and other revolving plans486
 3
 1
 4
 490
 1
 1
486
 3
 1
 4
 490
 1
 
Other185
 3
 
 3
 188
 
 1
174
 1
 
 1
 175
 
 
Total consumer loans10,450
 28
 25
 53
 10,503
 5
 26
10,961
 23
 28
 51
 11,012
 1
 38
Total$43,840
 $122
 $194
 $316
 $44,156
 $30
 $265
$44,981
 $139
 $110
 $249
 $45,230
 $5
 $218
December 31, 2016December 31, 2017
(In millions)Current 
30-89 days
past due
 
90+ days
past due
 
Total
past due
 
Total
loans
 
Accruing
loans
90+ days
past due
 
Nonaccrual
loans
that are
current 1
Current 
30-89 days
past due
 
90+ days
past due
 
Total
past due
 
Total
loans
 
Accruing
loans
90+ days
past due
 
Nonaccrual
loans
that are
current 1
                          
Loans held for sale$172
 $
 $
 $
 $172
 $
 $40
$44
 $
 $
 $
 $44
 $
 $12
Commercial:                          
Commercial and industrial$13,306
 $72
 $74
 $146
 $13,452
 $10
 $287
$13,887
 $60
 $56
 $116
 $14,003
 $13
 $146
Leasing423
 
 
 
 423
 
 14
363
 1
 
 1
 364
 
 8
Owner-occupied6,894
 40
 28
 68
 6,962
 8
 43
7,219
 29
 40
 69
 7,288
 4
 49
Municipal778
 
 
 
 778
 
 1
1,271
 
 
 
 1,271
 
 1
Total commercial21,401
 112
 102
 214
 21,615
 18
 345
22,740
 90
 96
 186
 22,926
 17
 204
Commercial real estate:                          
Construction and land development2,010
 7
 2
 9
 2,019
 1
 1
2,014
 3
 4
 7
 2,021
 
 
Term9,291
 9
 22
 31
 9,322
 12
 18
9,079
 13
 11
 24
 9,103
 2
 25
Total commercial real estate11,301
 16
 24
 40
 11,341
 13
 19
11,093
 16
 15
 31
 11,124
 2
 25
Consumer:                          
Home equity credit line2,635
 4
 6
 10
 2,645
 1
 5
2,763
 9
 5
 14
 2,777
 
 5
1-4 family residential5,857
 12
 22
 34
 5,891
 
 11
6,621
 16
 25
 41
 6,662
 1
 27
Construction and other consumer real estate479
 3
 4
 7
 486
 3
 
590
 6
 1
 7
 597
 1
 
Bankcard and other revolving plans478
 2
 1
 3
 481
 1
 1
506
 2
 1
 3
 509
 1
 
Other189
 1
 
 1
 190
 
 
184
 1
 
 1
 185
 
 
Total consumer loans9,638
 22
 33
 55
 9,693
 5
 17
10,664
 34
 32
 66
 10,730
 3
 32
Total$42,340
 $150
 $159
 $309
 $42,649
 $36
 $381
$44,497
 $140
 $143
 $283
 $44,780
 $22
 $261
1 
Represents nonaccrual loans that are not past due more than 30 days; however, full payment of principal and interest is still not expected.

Table of Contents
ZIONS BANCORPORATION AND SUBSIDIARIES

Credit Quality Indicators
In addition to the past due and nonaccrual criteria, we also analyze loans using loan risk-grading systems, which vary based on the size and type of credit risk exposure. The internal risk grades assigned to loans follow our definitions of Pass, Special Mention, Substandard,Sub-standard, and Doubtful, which are consistent with published definitions of regulatory risk classifications. For further discussion of our policies and processes regarding credit quality indicators and internal loan risk grading,risk-grading, see Note 6 of our 20162017 Annual Report on Form 10-K.
Outstanding loan balances (accruing and nonaccruing) categorized by these credit quality classifications are summarized as follows:
September 30, 2017June 30, 2018
(In millions)Pass 
Special
Mention
 
Sub-
standard
 Doubtful 
Total
loans
 
Total
allowance
Pass 
Special
Mention
 
Sub-
standard
 Doubtful 
Total
loans
 
Total
allowance
Commercial:                      
Commercial and industrial$12,987
 $357
 $695
 $2
 $14,041
  $13,361
 $288
 $484
 $1
 $14,134
  
Leasing325
 1
 17
 
 343
  339
 5
 14
 
 358
  
Owner-occupied6,697
 93
 292
 
 7,082
  7,077
 59
 229
 
 7,365
  
Municipal1,072
 
 1
 
 1,073
  1,367
 2
 19
 
 1,388
  
Total commercial21,081
 451
 1,005
 2
 22,539
 $385
22,144
 354
 746
 1
 23,245
 $321
Commercial real estate:                      
Construction and land development2,140
 24
 6
 
 2,170
  2,190
 7
 5
 
 2,202
  
Term8,697
 84
 163
 
 8,944
  8,551
 110
 110
 
 8,771
  
Total commercial real estate10,837
 108
 169
 
 11,114
 107
10,741
 117
 115
 
 10,973
 122
Consumer:                      
Home equity credit line2,728
 
 17
 
 2,745
  2,807
 
 18
 
 2,825
  
1-4 family residential6,475
 
 47
 
 6,522
  6,799
 
 62
 
 6,861
  
Construction and other consumer real estate554
 
 4
 
 558
  659
 
 2
 
 661
  
Bankcard and other revolving plans487
 
 3
 
 490
  488
 
 2
 
 490
  
Other187
 
 1
 
 188
  174
 
 1
 
 175
  
Total consumer loans10,431
 
 72
 
 10,503
 49
10,927
 
 85
 
 11,012
 47
Total$42,349
 $559
 $1,246
 $2
 $44,156
 $541
$43,812
 $471
 $946
 $1
 $45,230
 $490
December 31, 2016December 31, 2017
(In millions)Pass 
Special
Mention
 
Sub-
standard
 Doubtful 
Total
loans
 
Total
allowance
Pass 
Special
Mention
 
Sub-
standard
 Doubtful 
Total
loans
 
Total
allowance
Commercial:                      
Commercial and industrial$12,185
 $266
 $998
 $3
 $13,452
  $13,001
 $395
 $606
 $1
 $14,003
  
Leasing387
 5
 30
 1
 423
  342
 6
 16
 
 364
  
Owner-occupied6,560
 96
 306
 
 6,962
  6,920
 93
 275
 
 7,288
  
Municipal765
 7
 6
 
 778
  1,257
 13
 1
 
 1,271
  
Total commercial19,897
 374
 1,340
 4
 21,615
 $420
21,520
 507
 898
 1
 22,926
 $371
Commercial real estate:                      
Construction and land development1,942
 52
 25
 
 2,019
  2,002
 15
 4
 
 2,021
  
Term9,096
 82
 144
 
 9,322
  8,816
 138
 149
 
 9,103
  
Total commercial real estate11,038
 134
 169
 
 11,341
 116
10,818
 153
 153
 
 11,124
 103
Consumer:                      
Home equity credit line2,629
 
 16
 
 2,645
  2,759
 
 18
 
 2,777
  
1-4 family residential5,851
 
 40
 
 5,891
  6,602
 
 60
 
 6,662
  
Construction and other consumer real estate482
 
 4
 
 486
  596
 
 1
 
 597
  
Bankcard and other revolving plans478
 
 3
 
 481
  507
 
 2
 
 509
  
Other189
 
 1
 
 190
  185
 
 
 
 185
  
Total consumer loans9,629
 
 64
 
 9,693
 31
10,649
 
 81
 
 10,730
 44
Total$40,564
 $508
 $1,573
 $4
 $42,649
 $567
$42,987
 $660
 $1,132
 $1
 $44,780
 $518

Table of Contents
ZIONS BANCORPORATION AND SUBSIDIARIES

Impaired Loans
Loans are considered impaired when, based on current information and events, it is probable that we will be unable to collect all amounts due in accordance with the contractual terms of the loan agreement, including scheduled interest payments. Payments received on impaired loans that are accruing are recognized in interest income, according to the contractual loan agreement. Payments received on impaired loans that are on nonaccrual are not recognized in interest income, but are applied as a reduction to the principal outstanding. The amount of interest income recognized on a cash basis during the time the loans were impaired within the three and six months ended SeptemberJune 30, 20172018 and 20162017 was not significant. For additional information regarding our policies and methodologies used to evaluate impaired loans, see Note 6 of our 20162017 Annual Report on Form 10-K.
Information on impaired loans individually evaluated is summarized as follows, including the average recorded investment and interest income recognized for the three and six months ended September June 30, 20172018 and 2016:2017:
September 30, 2017June 30, 2018
(In millions)
Unpaid
principal
balance
 Recorded investment 
Total
recorded
investment
 
Related
allowance
Unpaid
principal
balance
 Recorded investment 
Total
recorded
investment
 
Related
allowance
with no
allowance
 
with
allowance
 
with no
allowance
 
with
allowance
 
Commercial:                  
Commercial and industrial$313
 $109
 $160
 $269
 $25
$189
 $84
 $53
 $137
 $8
Owner-occupied117
 64
 39
 103
 3
64
 39
 18
 57
 1
Municipal1
 1
 
 1
 
1
 1
 
 1
 
Total commercial431
 174
 199
 373
 28
254
 124
 71
 195
 9
Commercial real estate:                  
Construction and land development10
 5
 4
 9
 
7
 4
 1
 5
 
Term67
 45
 12
 57
 
63
 33
 24
 57
 4
Total commercial real estate77
 50
 16
 66
 
70
 37
 25
 62
 4
Consumer:                  
Home equity credit line24
 13
 8
 21
 
18
 13
 2
 15
 
1-4 family residential61
 26
 25
 51
 4
70
 27
 32
 59
 3
Construction and other consumer real estate3
 2
 1
 3
 
2
 1
 1
 2
 
Other1
 1
 
 1
 

 
 
 
 
Total consumer loans89
 42
 34
 76
 4
90
 41
 35
 76
 3
Total$597
 $266
 $249
 $515
 $32
$414
 $202
 $131
 $333
 $16
December 31, 2016December 31, 2017
(In millions)
Unpaid
principal
balance
 Recorded investment 
Total
recorded
investment
 
Related
allowance
Unpaid
principal
balance
 Recorded investment 
Total
recorded
investment
 
Related
allowance
with no
allowance
 
with
allowance
 
with no
allowance
 
with
allowance
 
Commercial:                  
Commercial and industrial$470
 $82
 $311
 $393
 $52
$293
 $80
 $142
 $222
 $24
Owner-occupied115
 71
 30
 101
 3
120
 79
 23
 102
 2
Municipal1
 1
 
 1
 
1
 1
 
 1
 
Total commercial586
 154
 341
 495
 55
414
 160
 165
 325
 26
Commercial real estate:                  
Construction and land development22
 7
 6
 13
 
8
 4
 2
 6
 
Term92
 53
 17
 70
 2
56
 36
 12
 48
 
Total commercial real estate114
 60
 23
 83
 2
64
 40
 14
 54
 
Consumer:                  
Home equity credit line24
 16
 7
 23
 
25
 13
 9
 22
 
1-4 family residential59
 27
 28
 55
 6
67
 28
 29
 57
 4
Construction and other consumer real estate3
 1
 2
 3
 
2
 1
 1
 2
 
Other2
 1
 
 1
 
1
 1
 
 1
 
Total consumer loans88
 45
 37
 82
 6
95
 43
 39
 82
 4
Total$788
 $259
 $401
 $660
 $63
$573
 $243
 $218
 $461
 $30

Table of Contents
ZIONS BANCORPORATION AND SUBSIDIARIES

 Three Months Ended
September 30, 2017
 Nine Months Ended
September 30, 2017
(In millions)
Average
recorded
investment
 
Interest
income
recognized
 
Average
recorded
investment
 
Interest
income
recognized
Commercial:       
Commercial and industrial$356
 $1
 $311
 $5
Owner-occupied104
 2
 101
 5
Municipal1
 
 1
 
Total commercial461
 3
 413
 10
Commercial real estate:       
Construction and land development10
 
 11
 
Term53
 1
 58
 11
Total commercial real estate63
 1
 69
 11
Consumer:       
Home equity credit line21
 
 21
 1
1-4 family residential53
 1
 53
 1
Construction and other consumer real estate2
 
 2
 
Other1
 
 1
 
Total consumer loans77
 1
 77

2
Total$601
 $5
 $559
 $23
Three Months Ended
September 30, 2016
 Nine Months Ended
September 30, 2016
Three Months Ended
June 30, 2018
 Six Months Ended
June 30, 2018
(In millions)
Average
recorded
investment
 
Interest
income
recognized
 
Average
recorded
investment
 
Interest
income
recognized
Average
recorded
investment
 
Interest
income
recognized
 
Average
recorded
investment
 
Interest
income
recognized
Commercial:              
Commercial and industrial$449
 $1
 $319
 $4
$138
 $
 $126
 $
Owner-occupied100
 2
 103
 8
54
 
 55
 8
Municipal1
 
 1
 
1
 
 1
 
Total commercial550
 3
 423
 12
193
 
 182
 8
Commercial real estate:              
Construction and land development11
 1
 12
 2
5
 
 5
 
Term74
 3
 79
 9
58
 
 53
 
Total commercial real estate85
 4
 91
 11
63
 
 58
 
Consumer:              
Home equity credit line23
 
 22
 1
15
 
 14
 
1-4 family residential61
 1
 58
 2
57
 
 55
 
Construction and other consumer real estate3
 
 3
 
2
 
 1
 
Other2
 
 2
 

 
 
 
Total consumer loans89
 1
 85
 3
74
 
 70


Total$724
 $8
 $599
 $26
$330
 $
 $310
 $8
 Three Months Ended
June 30, 2017
 Six Months Ended
June 30, 2017
(In millions)
Average
recorded
investment
 
Interest
income
recognized
 
Average
recorded
investment
 
Interest
income
recognized
Commercial:       
Commercial and industrial$398
 $4
 $356
 $4
Owner-occupied109
 1
 102
 4
Municipal1
 
 1
 
Total commercial508
 5
 459
 8
Commercial real estate:       
Construction and land development11
 
 11
 
Term59
 7
 60
 9
Total commercial real estate70
 7
 71
 9
Consumer:       
Home equity credit line21
 
 21
 
1-4 family residential58
 1
 56
 1
Construction and other consumer real estate2
 
 3
 
Other1
 
 1
 
Total consumer loans82
 1
 81
 1
Total$660
 $13
 $611
 $18
Modified and Restructured Loans
Loans may be modified in the normal course of business for competitive reasons or to strengthen the Company’s position. Loan modifications and restructurings may also occur when the borrower experiences financial difficulty and needs temporary or permanent relief from the original contractual terms of the loan. Loans that have been modified to accommodate a borrower who is experiencing financial difficulties, and for which the Company has granted a concession that it would not otherwise consider, are considered troubled debt restructurings (“TDRs”). For further discussion of our policies and processes regarding TDRs, see Note 6 of our 20162017 Annual Report on Form 10-K.

Table of Contents
ZIONS BANCORPORATION AND SUBSIDIARIES

Selected information on TDRs that includes the recorded investment on an accruing and nonaccruing basis by loan class and modification type is summarized in the following schedules:
September 30, 2017June 30, 2018
Recorded investment resulting from the following modification types:  Recorded investment resulting from the following modification types:  
(In millions)
Interest
rate below
market
 
Maturity
or term
extension
 
Principal
forgiveness
 
Payment
deferral
 
Other1
 
Multiple
modification
types2
 Total
Interest
rate below
market
 
Maturity
or term
extension
 
Principal
forgiveness
 
Payment
deferral
 
Other1
 
Multiple
modification
types2
 Total
Accruing                          
Commercial:                          
Commercial and industrial$
 $4
 $
 $
 $11
 $23
 $38
$
 $4
 $
 $
 $4
 $6
 $14
Owner-occupied2
 
 1
 
 7
 13
 23
2
 
 
 
 10
 9
 21
Municipal
 
 
 
 
 2
 2
Total commercial2
 4
 1
 
 18
 36
 61
2
 4
 
 
 14
 17
 37
Commercial real estate:                          
Construction and land development
 2
 
 
 
 2
 4

 
 
 
 
 1
 1
Term4
 
 
 1
 2
 7
 14
4
 2
 
 1
 
 6
 13
Total commercial real estate4
 2
 
 1
 2
 9
 18
4
 2
 
 1
 
 7
 14
Consumer:                          
Home equity credit line
 2
 10
 
 
 3
 15

 2
 7
 
 
 3
 12
1-4 family residential1
 
 7
 1
 2
 26
 37
1
 
 7
 
 1
 30
 39
Construction and other consumer real estate
 1
 
 
 
 1
 2

 1
 
 
 
 1
 2
Total consumer loans1
 3

17

1

2

30
 54
1
 3

14



1

34
 53
Total accruing7
 9
 18
 2
 22
 75
 133
7
 9
 14
 1
 15
 58
 104
Nonaccruing                          
Commercial:                          
Commercial and industrial
 1
 4
 4
 46
 27
 82

 6
 1
 1
 10
 29
 47
Owner-occupied1
 2
 
 1
 1
 9
 14
1
 2
 
 1
 1
 5
 10
Municipal
 1
 
 
 
 
 1

 1
 
 
 
 
 1
Total commercial1
 4
 4
 5
 47
 36
 97
1
 9
 1
 2
 11
 34
 58
Commercial real estate:                          
Construction and land development
 
 
 
 
 
 
Term2
 1
 
 
 1
 4
 8
3
 
 
 
 
 3
 6
Total commercial real estate2
 1
 
 
 1
 4
 8
3
 
 
 
 
 3
 6
Consumer:                          
Home equity credit line
 
 1
 
 
 
 1

 
 2
 
 
 
 2
1-4 family residential
 
 2
 
 1
 5
 8

 
 1
 
 2
 8
 11
Construction and other consumer real estate
 
 
 1
 
 
 1
Total consumer loans
 
 3
 1
 1
 5
 10

 
 3
 
 2
 8
 13
Total nonaccruing3
 5
 7
 6
 49
 45
 115
4
 9
 4
 2
 13
 45
 77
Total$10
 $14
 $25
 $8
 $71
 $120
 $248
$11
 $18
 $18
 $3
 $28
 $103
 $181
1 Includes TDRs that resulted from other modification types including, but not limited to, a legal judgment awarded on different terms, a bankruptcy plan confirmed on different terms, a settlement that includes the delivery of collateral in exchange for debt reduction, etc.
2 
Includes TDRs that resulted from a combination of any of the previous modification types.

Table of Contents
ZIONS BANCORPORATION AND SUBSIDIARIES

December 31, 2016December 31, 2017
Recorded investment resulting from the following modification types:  Recorded investment resulting from the following modification types:  
(In millions)
Interest
rate below
market
 
Maturity
or term
extension
 
Principal
forgiveness
 
Payment
deferral
 
Other1
 
Multiple
modification
types2
 Total
Interest
rate below
market
 
Maturity
or term
extension
 
Principal
forgiveness
 
Payment
deferral
 
Other1
 
Multiple
modification
types2
 Total
Accruing                          
Commercial:                          
Commercial and industrial$
 $19
 $
 $
 $
 $28
 $47
$
 $2
 $
 $
 $12
 $33
 $47
Owner-occupied3
 
 1
 
 8
 10
 22
1
 1
 
 
 7
 14
 23
Total commercial3
 19
 1
 
 8
 38
 69
1
 3
 
 
 19
 47
 70
Commercial real estate:                          
Construction and land development
 4
 
 
 
 4
 8

 
 
 
 
 2
 2
Term4
 
 
 1
 2
 10
 17
6
 
 
 1
 
 7
 14
Total commercial real estate4
 4
 
 1
 2
 14
 25
6
 
 
 1
 
 9
 16
Consumer:                          
Home equity credit line
 1
 10
 
 
 3
 14

 2
 9
 
 1
 3
 15
1-4 family residential3
 1
 6
 
 2
 30
 42
1
 
 6
 1
 2
 26
 36
Construction and other consumer real estate
 
 
 
 
 1
 1

 1
 
 
 
 1
 2
Total consumer loans3
 2
 16
 
 2
 34
 57
1
 3
 15
 1
 3
 30
 53
Total accruing10
 25
 17
 1
 12
 86
 151
8
 6
 15
 2
 22
 86
 139
Nonaccruing                          
Commercial:                          
Commercial and industrial1
 
 
 1
 33
 25
 60

 3
 5
 2
 28
 24
 62
Owner-occupied
 1
 
 3
 1
 12
 17
1
 2
 
 1
 1
 5
 10
Municipal
 1
 
 
 
 
 1

 1
 
 
 
 
 1
Total commercial1
 2
 
 4
 34
 37
 78
1
 6
 5
 3
 29
 29
 73
Commercial real estate:                          
Construction and land development
 
 
 
 2
 
 2
Term2
 1
 
 
 2
 3
 8
2
 
 
 
 
 3
 5
Total commercial real estate2
 1
 
 
 4
 3
 10
2
 
 
 
 
 3
 5
Consumer:                          
Home equity credit line
 
 1
 
 
 1
 2

 
 1
 
 
 
 1
1-4 family residential
 
 2
 
 1
 5
 8

 
 2
 
 1
 5
 8
Construction and other consumer real estate
 
 
 2
 
 
 2
Total consumer loans
 
 3
 2
 1
 6
 12

 
 3
 
 1
 5
 9
Total nonaccruing3
 3
 3
 6
 39
 46
 100
3
 6
 8
 3
 30
 37
 87
Total$13
 $28
 $20
 $7
 $51
 $132
 $251
$11
 $12
 $23
 $5
 $52
 $123
 $226
1 
Includes TDRs that resulted from other modification types including, but not limited to, a legal judgment awarded on different terms, a bankruptcy plan confirmed on different terms, a settlement that includes the delivery of collateral in exchange for debt reduction, etc.
2 
Includes TDRs that resulted from a combination of any of the previous modification types.
Unfunded lending commitments on TDRs amounted to approximately $18$27 million at SeptemberJune 30, 20172018 and $14$22 million at December 31, 2016.2017.
The total recorded investment of all TDRs in which interest rates were modified below market was $116$93 million at SeptemberJune 30, 20172018 and $128$120 million at December 31, 2016.2017. These loans are included in the previous schedule in the columns for interest rate below market and multiple modification types.
The net financial impact on interest income due to interest rate modifications below market for accruing TDRs for the three and ninesix months ended SeptemberJune 30, 20172018 and 20162017 was not significant.

Table of Contents
ZIONS BANCORPORATION AND SUBSIDIARIES

On an ongoing basis, we monitor the performance of all TDRs according to their restructured terms. Subsequent payment default is defined in terms of delinquency, when principal or interest payments are past due 90 days or more for commercial loans, or 60 days or more for consumer loans.

Table of Contents
ZIONS BANCORPORATION AND SUBSIDIARIES

The recorded investment of accruing and nonaccruing TDRs that had a payment default during the period listed below (and are still in default at period end) and are within 12 months or less of being modified as TDRs is as follows:
 Three Months Ended
June 30, 2018
 Six Months Ended
June 30, 2018
(In millions)Accruing Nonaccruing Total Accruing Nonaccruing Total
Commercial:           
Commercial and industrial$
 $5
 $5
 $
 $5
1,291
$5
Owner-occupied
 
 
 
 1
5,405
1
Total commercial
 5
 5
 
 6
 6
Commercial real estate:           
Term
 2
 2
 
 2
 2
Total commercial real estate
 2
 2
 
 2
 2
Consumer:           
1-4 family residential
 1
 1
 
 1
 1
Total consumer loans
 1
 1
 
 1
 1
Total$
 $8
 $8
 $
 $9
 $9
Three Months Ended
September 30, 2017
 Nine Months Ended
September 30, 2017
Three Months Ended
June 30, 2017
 Six Months Ended
June 30, 2017
(In millions)Accruing Nonaccruing Total Accruing Nonaccruing TotalAccruing Nonaccruing Total Accruing Nonaccruing Total
Commercial:                      
Commercial and industrial$
 $1
 $1
 $
 $1
1,291
$1
$
 $
 $
 $
 $
1,291
$
Owner-occupied
 
 
 
 1
5,405
1

 3
 3
 
 3
5,405
3
Total commercial
 1
 1
 
 2
 2

 3
 3
 
 3
 3
Total$
 $1
 $1
 $
 $2
 $2
$
 $3
 $3
 $
 $3
 $3
 Three Months Ended
September 30, 2016
 Nine Months Ended
September 30, 2016
(In millions)Accruing Nonaccruing Total Accruing Nonaccruing Total
Commercial:           
Commercial and industrial$
 $3
 $3
 $
 $3
 $3
Owner-occupied4
 
 4
 4
 
 4
Total commercial4
 3
 7
 4
 3
 7
Total$4
 $3
 $7
 $4
 $3
 $7
Note: Total loans modified as TDRs during the 12 months previous to SeptemberJune 30, 2018 and 2017 and 2016 were $84$73 million and $139$123 million, respectively.
At SeptemberJune 30, 20172018 and December 31, 2016,2017, the amount of foreclosed residential real estate property held by the Company was approximately $1$2 million and $2less than $1 million, and the recorded investment in consumer mortgage loans collateralized by residential real estate property that are in the process of foreclosure was approximately $7$9 million and $10 million, respectively.
Concentrations of Credit Risk
Credit risk is the possibility of loss from the failure of a borrower, guarantor, or another obligor to fully perform under the terms of a credit-related contract. We perform an ongoing analysis of our loan portfolio to evaluate whether there is any significant exposure to any concentrations of credit risk. See Note 6 of our 20162017 Annual Report on Form 10-K for further discussion of our evaluation of credit risk concentrations. See also Note 7 of our 20162017 Annual Report on Form 10-K for a discussion of counterparty risk associated with the Company’s derivative transactions.
Purchased Loans
Background and Accounting
We purchase loans in the ordinary course of business and account for them and the related interest income based on their performing status at the time of acquisition. Purchased credit-impaired (“PCI”) loans have evidence of credit deterioration at the time of acquisition and it is probable that not all contractual payments will be collected. Interest income for PCI loans is accounted for on an expected cash flow basis. Upon acquisition, in accordance with applicable accounting guidance, the acquired loans were recorded at their fair value without a corresponding ALLL. Certain acquired loans with similar characteristics such as risk exposure, type, size, etc., are grouped and accounted for in loan pools.

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Outstanding Balances and Accretable Yield
The outstanding balances of all required payments and the related carrying amounts for PCI loans are as follows:
(In millions)September 30, 2017 December 31, 2016
    
Commercial$36
 $49
Commercial real estate15
 51
Consumer7
 9
Outstanding balance$58
 $109
Carrying amount$40
 $77
Less ALLL
 1
Carrying amount, net$40
 $76
At the time of acquisition of PCI loans, we determine the loan’s contractually required payments in excess of all cash flows expected to be collected as an amount that should not be accreted (nonaccretable difference). With respect to the cash flows expected to be collected, the portion representing the excess of the loan’s expected cash flows over our initial investment (accretable yield) is accreted into interest income on a level yield basis over the remaining expected life of the loan or pool of loans. The effects of estimated prepayments are considered in estimating the expected cash flows.
Certain PCI loans are not accounted for as previously described because the estimation of cash flows to be collected involves a high degree of uncertainty. Under these circumstances, the accounting guidance provides that interest income is recognized on a cash basis similar to the cost recovery methodology for nonaccrual loans. The net carrying amounts in the preceding schedule also include the amounts for these loans. There were no loans of this type at September 30, 2017 and December 31, 2016.
Changes in the accretable yield for PCI loans were as follows:
(In millions)Three Months Ended
September 30,
 Nine Months Ended
September 30,
2017 2016 2017 2016
        
Balance at beginning of period$21
 $38
 $33
 $40
Accretion(2) (6) (17) (19)
Reclassification from nonaccretable difference
 
 (1) 9
Disposals and other
 2
 4
 4
Balance at end of period$19
 $34
 $19
 $34
Note: Amounts have been adjusted based on refinements to the original estimates of the accretable yield.
The primary drivers of reclassification to accretable yield from nonaccretable difference and increases in disposals and other resulted primarily from (1) changes in estimated cash flows, (2) unexpected payments on nonaccrual loans, and (3) recoveries on zero balance loans pools. See subsequent discussion under changes in cash flow estimates.
ALLL Determination
For all acquired loans, the ALLL is only established for credit deterioration subsequent to the date of acquisition and represents our estimate of the inherent losses in excess of the book value of acquired loans. The ALLL for acquired loans is included in the overall ALLL in the balance sheet.
During the three and nine months ended September 30, we adjusted the ALLL for acquired loans by recording a provision for loan losses of an insignificant amount for both periods in 2017, and $1 million and $2 million in 2016, respectively. The provision is net of the ALLL reversals resulting from changes in cash flow estimates, which are discussed subsequently.

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Changes in the provision for loan losses and related ALLL are driven in large part by the same factors that affect the changes in reclassification from nonaccretable difference to accretable yield, as discussed under changes in cash flow estimates.
Changes in Cash Flow Estimates
Over the life of the loan or loan pool, we continue to estimate cash flows expected to be collected. We evaluate quarterly at the balance sheet date whether the estimated present values of these loans using the effective interest rates have decreased below their carrying values. If so, we record a provision for loan losses.
For increases in carrying values that resulted from better-than-expected cash flows, we use such increases first to reverse any existing ALLL. During the three and nine months endedSeptember 30, total reversals to the ALLL, including the impact of increases in estimated cash flows, were insignificant during both periods in 2017 and $1 million during both periods in 2016, respectively. When there is no current ALLL, we increase the amount of accretable yield on a prospective basis over the remaining life of the loan and recognize this increase in interest income.
For the three and nine months ended September 30, the impact of increased cash flow estimates recognized in the statement of income for acquired loans with no ALLL was approximately $2 million and $15 million in 2017, and $4 million and $14 million in 2016, respectively, of additional interest income.
7.DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES
Objectives and Accounting
Our objectives in using derivatives are to add stability to interest income or expense, to modify the duration of specific assets or liabilities as we consider advisable, to manage exposure to interest rate movements or other identified risks, and/or to directly offset derivatives sold to our customers. For a detailed discussion of the use of and accounting policies regarding derivative instruments, see Note 7 of our 20162017 Annual Report on Form 10-K10-K.

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Collateral and Credit Risk
Exposure to credit risk arises from the possibility of nonperformance by counterparties. No significant losses on derivative instruments have occurred as a result of counterparty nonperformance. For a more detailed discussion of collateral and credit risk related to our derivative contracts, see Note 7 of our 20162017 Annual Report on Form 10-K.
Our derivative contracts require us to pledge collateral for derivatives that are in a net liability position at a given balance sheet date. Certain of these derivative contracts contain credit-risk-related contingent features that include the requirement to maintain a minimum debt credit rating. We may be required to pledge additional collateral if a credit-risk-related feature were triggered, such as a downgrade of our credit rating. However, in past situations, not all counterparties have demanded that additional collateral be pledged when provided for under their contracts. At SeptemberJune 30, 2017,2018, the fair value of our derivative liabilities was $35$70 million, for which we were required to pledge cash collateral of approximately $46$47 million in the normal course of business. If our credit rating were downgraded one notch by either Standard & Poor’s or Moody’s at SeptemberJune 30, 2017, the2018, there would likely be no additional amount of collateral we could be required to pledge is approximately $1 million.be pledged. As a result of the Dodd-Frank Act, all newly eligible derivatives entered into are cleared through a central clearinghouse. Derivatives that are centrally cleared do not have credit-risk-related features that require additional collateral if our credit rating were downgraded.

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Derivative Amounts
Selected information with respect to notional amounts and recorded gross fair values at SeptemberJune 30, 20172018 and December 31, 20162017, and the related gain (loss) of derivative instruments for the three and ninesix months ended SeptemberJune 30, 20172018 and 20162017 is summarized as follows:
September 30, 2017 December 31, 2016June 30, 2018 December 31, 2017
Notional
amount
 Fair value 
Notional
amount
 Fair value
Notional
amount
 Fair value 
Notional
amount
 Fair value
(In millions)
Other
assets
 
Other
liabilities
 
Other
assets
 
Other
liabilities
Other
assets
 
Other
liabilities
 
Other
assets
 
Other
liabilities
Derivatives designated as hedging instruments:                      
Cash flow hedges:           
Interest rate swaps$1,138
 $
 $
 $1,388
 $2
 $1
$1,038
 $
 $
 $1,138
 $
 $
Total derivatives designated as hedging instruments1,038
 
 
 1,138
 
 
Derivatives not designated as hedging instruments:                      
Interest rate swaps and forwards205
 1
 
 235
 2
 
243
 1
 
 223
 1
 
Interest rate swaps for customers 1
4,598
 36
 30
 4,162
 49
 49
5,302
 22
 65
 4,550
 28
 33
Foreign exchange280
 6
 5
 424
 11
 9
354
 6
 5
 913
 9
 7
Total derivatives not designated as hedging instruments5,083
 43
 35
 4,821
 62
 58
5,899
 29
 70
 5,686
 38
 40
Total derivatives$6,221
 $43
 $35
 $6,209
 $64
 $59
$6,937
 $29
 $70
 $6,824
 $38
 $40
1 Notional amounts include both the customer swaps and the offsetting derivative contracts.
Amount of derivative gain (loss) recognized/reclassifiedAmount of derivative gain (loss) recognized/reclassified
Three Months Ended September 30, 2017 Nine Months Ended September 30, 2017Three Months Ended June 30, 2018 Six Months Ended June 30, 2018
(In millions)
OCI Reclassified from AOCI to interest income Noninterest income (expense) Offset to interest expense OCI 
Reclassified
from AOCI
to interest
income
 Noninterest
income
(expense)
 Offset to
interest
expense
OCI Reclassified from AOCI to interest income Noninterest income (expense) Offset to interest expense OCI 
Reclassified
from AOCI
to interest
income
 Noninterest
income
(expense)
 Offset to
interest
expense
Derivatives designated as hedging instruments:                              
Cash flow hedges1:
           ��                  
Interest rate swaps$
 $
     $
 $3
    $(2) $(1)     $(7) $(2)    
Derivatives not designated as hedging instruments:                              
Interest rate swaps and forward contracts    $
       $(1)  
Interest rate swaps for customers    4
       8
      $4
       $9
  
Foreign exchange    4
       12
      5
       10
  
Total derivatives$
 $
 $8
 $
 $
 $3
 $19
 $
$(2) $(1) $9
 $
 $(7) $(2) $19
 $

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Amount of derivative gain (loss) recognized/reclassifiedAmount of derivative gain (loss) recognized/reclassified
Three Months Ended September 30, 2016 Nine Months Ended September 30, 2016Three Months Ended June 30, 2017 Six Months Ended June 30, 2017
(In millions)
OCI Reclassified from AOCI to interest income Noninterest income (expense) Offset to interest expense OCI 
Reclassified
from AOCI
to interest
income
 
Noninterest
income
(expense)
 
Offset to
interest
expense
OCI Reclassified from AOCI to interest income Noninterest income (expense) Offset to interest expense OCI 
Reclassified
from AOCI
to interest
income
 Noninterest
income
(expense)
 Offset to
interest
expense
Derivatives designated as hedging instruments:                              
Cash flow hedges1:
                              
Interest rate swaps$(5) $3
     $23
 $9
    $2
 $1
     $
 $3
    
Derivatives not designated as hedging instruments:                              
Interest rate swaps and forward contracts

    $1
       $3
  
Interest rate swaps for customers    4
       5
      $3
       $4
  
Foreign exchange    3
       8
      4
       7
  
Total derivatives$(5) $3
 $8
 $
 $23
 $9
 $16
 $
$2
 $1
 $7
 $
 $
 $3
 $11
 $
Note: These schedules are not intended to present at any given time the Company’s long/short position with respect to its derivative contracts.
1 
Amounts recognized in OCI and reclassified from AOCI represent the effective portion of the derivative gain (loss). For the 12 months following SeptemberJune 30, 2017,2018, we estimate that $2$(7) million will be reclassified from AOCI into interest income.

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The fair value of derivative assets was reduced by a net credit valuation adjustment of $4$1 million and $7$2 million at SeptemberJune 30, 20172018 and 2016,2017, respectively. The adjustment for derivative liabilities was a decrease of $2 million and $1 million decrease at June 30, 2018 and was not significant at September 30, 2017, and 2016, respectively. These adjustments are required to reflect both our own nonperformance risk and the respective counterparty’s nonperformance risk.
8.LONG-TERM DEBT AND SHAREHOLDERS’ EQUITY
Long-term debt is summarized as follows:
(In millions)September 30,
2017
 December 31, 2016June 30,
2018
 December 31, 2017
      
Subordinated notes$247
 $247
$247
 $247
Senior notes135
 287
135
 135
Capital lease obligations1
 1
1
 1
Total$383
 $535
$383
 $383
The preceding carrying values represent the par value of the debt adjusted for any unamortized premium or discount or unamortized debt issuance costs.
Debt Redemptions and MaturitiesRepurchases of Company Common Stock
During the firstsecond quarter of 2017, $153 million of2018, we continued our 4.5% senior notes matured.
During the first nine months of 2016, $89 million of our 4.0% senior notes matured. In addition, we purchased $15 million of our 4.5% senior notes and redeemed $11 million of our 3.6% senior medium-term notes.
During the third quarter of 2016 we elected to exercise our right to redeem the following junior subordinated debentures related to trust preferred securities issued to the following trusts.
(Dollar amounts in millions)Balance Redeemed 
Coupon rate 1
 Redemption date
      
Amegy Statutory Trust I$51
 3mL+2.85% September 17, 2016
Amegy Statutory Trust III62
 3mL+1.78% September 15, 2016
Stockmen’s Statutory Trust II8
 3mL+3.15% September 26, 2016
Stockmen’s Statutory Trust III8
 3mL+2.89% September 17, 2016
Total$129
    
1
Designation of “3mL” is three-month London Interbank Offered Rate (“LIBOR”).
Shareholders’ Equity
During the third quarter of 2017, the Company continued its common stock buyback program and repurchased 2.52.1 million shares of common stock outstanding with a fair value of $115$120 million at an average price of $45.45$55.82 per share, and hasshare. During the first six months of 2018, we repurchased 4.74.3 million shares of common stockshares outstanding with a fair value $205of $235 million at an average price of $43.72$54.64 per share. As of June 30, 2018, we had repurchased $465 million of our common stock at an average price of $50.81 per share, duringwhich was the first nine monthstotal planned common stock repurchases in our 2017 capital plan (which spans the timeframe of 2017.July 2017 to June 2018). During the first ninesix months of 2016, the Company2017, we repurchased 1.52.2 million shares of common stock outstanding with a fair value of $45$90 million, at an average price of $30.64$41.70 per share. In July 2018, the Company announced that the Board approved a plan to repurchase $185 million of common stock during the third quarter of 2018 and began the repurchases.
Common Stock Warrants
During the second quarterfirst six months of 2017, we redeemed all outstanding2018, 1.1 million shares of our 7.9% Series F preferredcommon stock for a cash paymentwere issued from the cashless exercise of approximately $144 million. Dividends paid to these redeemed shares amounted to $0.493753.3 million common stock ZIONZ warrants. As of June 30, 2018, 2.5 million common stock ZIONZ warrants with an exercise price of $36.27 per depositary share, for a total amount of $3 million. The total one-time reduction to net earnings applicable to common shareholderswere outstanding. These warrants expire on November 14, 2018 and were associated with the preferred stock redemptionissued under the Troubled Asset Relief Program, which was $2 million due to the accelerated recognition of preferred stock issuance costs.
On April 25, 2016, we launched a tender offer to purchase up to $120 million par amount of certain outstanding preferred stock. Our preferred stock decreased by $119 millionredeemed in the second quarter of 2016 as a result of the tender offer, including the purchase of $27 million of our Series I preferred stock, $59 million of our Series J preferred stock, and $33 million of our Series G preferred stock for an aggregate cash payment of $126 million. The2012.

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total one-time reduction to net earnings applicable toAdditionally, as of June 30, 2018, 29.3 million common shareholders associatedstock ZIONW warrants, with the preferred stock redemption was $10 million.an exercise price of $35.22, were outstanding. These warrants expire on May 22, 2020.
Accumulated Other Comprehensive Income
Accumulated other comprehensive income (loss) was $(57)$(315) million at SeptemberJune 30, 20172018 compared to $(122)with $(139) million at December 31, 2016.2017. Changes in AOCI by component are as follows:
(In millions)Net unrealized gains (losses) on investment securities Net unrealized gains (losses) on derivatives and other Pension and post-retirement TotalNet unrealized gains (losses) on investment securities Net unrealized gains (losses) on derivatives and other Pension and post-retirement Total
Nine Months Ended September 30, 2017       
Six Months Ended June 30, 2018       
Balance at December 31, 2017$(114) $(2) $(23) $(139)
OCI (loss) before reclassifications, net of tax(175) 
 
 (175)
Amounts reclassified from AOCI, net of tax
 (1) 
 (1)
OCI (loss)(175) (1) 
 (176)
Balance at June 30, 2018$(289) $(3) $(23) $(315)
Income tax benefit included in OCI (loss)$(58) $
 $
 $(58)
Six Months Ended June 30, 2017       
Balance at December 31, 2016$(93) $2
 $(31) $(122)$(93) $2
 $(31) $(122)
OCI before reclassifications, net of tax65
 2
 
 67
73
 2
 
 75
Amounts reclassified from AOCI, net of tax
 (2) 
 (2)
 (2) 
 (2)
OCI65
 
 
 65
73
 
 
 73
Balance at September 30, 2017$(28) $2
 $(31) $(57)
Balance at June 30, 2017$(20) $2
 $(31) $(49)
Income tax expense included in OCI$40
 $
 $
 $40
$45
 $
 $
 $45
Nine Months Ended September 30, 2016       
Balance at December 31, 2015$(18) $2
 $(38) $(54)
OCI (loss) before reclassifications, net of tax54
 16
 (1) 69
Amounts reclassified from AOCI, net of tax
 (5) 
 (5)
OCI (loss)54
 11
 (1) 64
Balance at September 30, 2016$36
 $13
 $(39) $10
Income tax expense included in OCI (loss)$34
 $6
 $1
 $41
 
Amounts reclassified
from AOCI 1
 
Amounts reclassified
from AOCI 1
 
Statement of income (SI)
Balance sheet (BS)
  
Amounts reclassified
from AOCI 1
 
Amounts reclassified
from AOCI 1
 
Statement of income (SI)
Balance sheet (BS)
 
(In millions) Three Months Ended
September 30,
 Nine Months Ended
September 30,
  Three Months Ended
June 30,
 Six Months Ended
June 30,
 
Details about AOCI components 2017 2016 2017 2016 Affected line item 2018 2017 2018 2017 Affected line item
                  
Net unrealized gains on derivative instruments $
 $3
 $3
 $9
 SI Interest and fees on loans $1
 $1
 $2
 $3
 SI Interest and fees on loans
Income tax expense 
 1
 1
 4
  
 
 1
 1
 
Amounts Reclassified from AOCI $
 $2
 $2
 $5
  $1
 $1
 $1
 $2
 
1 
Positive reclassification amounts indicate increases to earnings in the statement of income and decreases to balance sheet assets.
9.COMMITMENTS, GUARANTEES AND CONTINGENT LIABILITIES
Commitments and Guarantees
Contractual amounts of off-balance sheet financial instruments used to meet the financing needs of our customers are as follows:
(In millions)September 30,
2017
 December 31,
2016
June 30,
2018
 December 31,
2017
      
Net unfunded commitments to extend credit 1
$18,828
 $18,274
$20,312
 $19,583
Standby letters of credit:      
Financial709
 771
699
 721
Performance202
 196
183
 196
Commercial letters of credit43
 60
15
 31
Total unfunded lending commitments$19,782
 $19,301
$21,209
 $20,531
1 
Net of participations

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The Company’s 20162017 Annual Report on Form 10-K contains further information about these commitments and guarantees including their terms and collateral requirements. At SeptemberJune 30, 2017,2018, the Company had recorded approximately $5 million as a liability for the guarantees associated with the standby letters of credit, which consisted of $1 million attributable to the RULC and $4 million of deferred commitment fees.
At SeptemberJune 30, 2017,2018, we had unfunded commitments for PEIs of approximately $27$32 million. These obligations have no stated maturity. PEIs related to these commitments that are prohibited by the Volcker Rule were $4$3 million at SeptemberJune 30, 2017.2018. See related discussions about these investments in Notes 3 and Note 5.
Legal Matters
We are subject to litigation in court and arbitral proceedings, as well as proceedings, investigations, examinations and other actions brought or considered by governmental and self-regulatory agencies. Litigation may relate to lending, deposit and other customer relationships, vendor and contractual issues, employee matters, intellectual property matters, personal injuries and torts, regulatory and legal compliance, and other matters. While most matters relate to individual claims, we are also subject to putative class action claims and similar broader claims. Proceedings, investigations, examinations and other actions brought or considered by governmental and self-regulatory agencies may relate to our banking, investment advisory, trust, securities, and other products and services; our customers’ involvement in money laundering, fraud, securities violations and other illicit activities or our policies and practices relating to such customer activities; and our compliance with the broad range of banking, securities and other laws and regulations applicable to us. At any given time, we may be in the process of responding to subpoenas, requests for documents, data and testimony relating to such matters and engaging in discussions to resolve the matters.
As of SeptemberJune 30, 2017,2018, we were subject to the following material litigation andor governmental inquiries:
a civil suit, Shou-En Wang v. CB&T, brought against us in the Superior Court for Los Angeles County, Central District in April 2016. The case relates to our depositor relationships with customers who were promoters of an investment program that allegedly misappropriated investors’ funds. This case is in an early phase, with initial motion practice having been completed.completed and discovery being underway.
a civil suit, McFarland as Trustee for International Manufacturing Group v. CB&T, et. al., brought against us in the United States Bankruptcy Court for the Eastern District of California in May 2016. The Trustee seeks to recover loan payments previously repaid to us by our customer, International Manufacturing Group (“IMG”), alleging that IMG, along with its principal, obtained loans and made loan repayments in furtherance of an alleged Ponzi scheme. This case is in an early phase with initialInitial motion practice havinghas been completed.completed and discovery is underway.
a civil suit, JTS Communities, Inc. et. al v. CB&T, Jun Enkoji and Dawn Satow, brought against us in the Superior Court of California,for Sacramento County, California in June 2017. In this case four investors in IMG seek to hold us liable for losses arising from their investments in that company, alleging that we conspired with and knowingly assisted IMG and its principal in furtherance of an alleged Ponzi Scheme.scheme. This case is in an early phase with initial motion practice having been completed but discovery not having been commenced.
a civil class action lawsuit, Evans v. CB&T, brought against us in the United States District Court for the Eastern District of California in May 2017. This case was filed on behalf of a class of up to 50 investors in IMG and seeks to hold us liable for losses of class members arising from their investments in IMG, alleging that we conspired with and knowingly assisted IMG and its principal in furtherance of an alleged Ponzi Scheme.
Atscheme. In December 2017, the endDistrict Court dismissed all claims against the Company. In January 2018, the plaintiff filed an appeal with the Court of September 2017, we settled a governmental inquiry conducted by the U.S. Attorney’s OfficeAppeals for the Eastern District of Pennsylvania into our payment processing practices relatingNinth Circuit. The appellate briefing process is underway and is scheduled to certain telemarketing customers alleged to have engaged in fraudulent marketing practices, primarily in the 2006-2008 timeframe. The settlement agreement imposed a civil money penalty of $3.6 million, which was paidbe completed in the third quarter. Becausequarter of 2018.
a Private Attorney General Act (“PAGA”) claim under California law, Lawson v. CB&T, brought against us in the Superior Court for the County of San Diego, California, in February 2016. In this amount had been fully reserved,case, the settlement did not affect our third quarter financial results.plaintiff alleges, on behalf of herself and other current or former employees of the Company who worked in California on a non-exempt basis, violations by the Company of California wage and hour laws. The case remains in the early stages of motion practice, to date mainly involving questions of venue and scope of employees covered by the PAGA

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claims. In March 2018, the Supreme Court of California granted review of an appeal from the intermediate appellate court decision requiring all aspects of the case to be heard in state court, rather than in arbitration.
a civil case, Lifescan Inc. and Johnson & Johnson Health Care Services v. Jeffrey Smith, et al., brought against us in the United States District Court for the District of New Jersey in December 2017. In this case, certain manufacturers and distributors of medical products seek to hold us liable for allegedly fraudulent practices of a borrower of the Company which filed for bankruptcy protection in 2017. The case is in early phase, with initial motion practice underway.
At least quarterly, we review outstanding and new legal matters, utilizing then available information. In accordance with applicable accounting guidance, if we determine that a loss from a matter is probable and the amount of the loss can be reasonably estimated, we establish an accrual for the loss. In the absence of such a determination, no accrual is made. Once established, accruals are adjusted to reflect developments relating to the matters.

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In our review, we also assess whether we can determine the range of reasonably possible losses for significant matters in which we are unable to determine that the likelihood of a loss is remote. Because of the difficulty of predicting the outcome of legal matters, discussed subsequently, we are able to meaningfully estimate such a range only for a limited number of matters. Based on information available as of SeptemberJune 30, 2017,2018, we estimated that the aggregate range of reasonably possible losses for those matters to be from $0 million to roughly $20$15 million in excess of amounts accrued. The matters underlying the estimated range will change from time to time, and actual results may vary significantly from this estimate. Those matters for which a meaningful estimate is not possible are not included within this estimated range and, therefore, this estimated range does not represent our maximum loss exposure.
Based on our current knowledge, we believe that our current estimated liability for litigation and other legal actions and claims, reflected in our accruals and determined in accordance with applicable accounting guidance, is adequate and that liabilities in excess of the amounts currently accrued, if any, arising from litigation and other legal actions and claims for which an estimate as previously described is possible, will not have a material impact on our financial condition, results of operations, or cash flows. However, in light of the significant uncertainties involved in these matters, and the very large or indeterminate damages sought in some of these matters, an adverse outcome in one or more of these matters could be material to our financial condition, results of operations, or cash flows for any given reporting period.
Any estimate or determination relating to the future resolution of litigation, arbitration, governmental or self-regulatory examinations, investigations or actions or similar matters is inherently uncertain and involves significant judgment. This is particularly true in the early stages of a legal matter, when legal issues and facts have not been well articulated, reviewed, analyzed, and vetted through discovery, preparation for trial or hearings, substantive and productive mediation or settlement discussions, or other actions. It is also particularly true with respect to class action and similar claims involving multiple defendants, matters with complex procedural requirements or substantive issues or novel legal theories, and examinations, investigations and other actions conducted or brought by governmental and self-regulatory agencies, in which the normal adjudicative process is not applicable. Accordingly, we usually are unable to determine whether a favorable or unfavorable outcome is remote, reasonably likely, or probable, or to estimate the amount or range of a probable or reasonably likely loss, until relatively late in the course of a legal matter, sometimes not until a number of years have elapsed. Accordingly, our judgments and estimates relating to claims will change from time to time in light of developments and actual outcomes will differ from our estimates. These differences may be material.
10. REVENUE RECOGNITION
Adoption of ASC Topic 606, “Revenue from Contracts with Customers”
On January 1, 2018, we adopted the accounting guidance in ASC Topic 606, “Revenue from Contracts with Customers” (“Topic 606”) using the modified retrospective method applied to those contracts with customers which were not completed as of January 1, 2018. Results for reporting periods beginning after January 1, 2018 are presented under Topic 606, while prior period amounts are not adjusted and continue to be reported in accordance

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with our historic accounting under Topic 605, “Revenue Recognition.” Upon adoption, the Company has elected to use the following optional exemptions that are permitted under the Topic 606, which have been applied consistently to all contracts within all reporting periods presented:
The Company recognizes the incremental cost of obtaining a contract as an expense, when incurred, if the amortization period of the asset that the Company would have recognized is one year or less.
For performance obligations satisfied over time, if the Company has a right to consideration from a customer in an amount that corresponds directly with the value to the customer of the Company’s performance completed to date, the Company will generally recognize revenue in the amount to which the Company has a right to invoice.
The Company does not generally disclose information about its remaining performance obligations for those performance obligations that have an original expected duration of one year or less, or where the Company recognizes revenue in the amount to which the Company has a right to invoice.
The cumulative effect of adopting Topic 606 did not have a material impact to retained earnings as of January 1, 2018. The adoption of Topic 606 resulted in changes to our accounting policies, business processes, and internal controls to support the recognition, measurement and disclosure requirements under Topic 606.
Revenue Recognition
We derive our revenue primarily from Interest Income on Loans and Securities, which was more than three-quarters of our revenue in the second quarter of 2018. Only noninterest income is considered to be revenue from contracts with customers in scope of ASC 606. Revenue from contracts with customers is recognized when control of the promised goods or services is transferred to our customers, in an amount that reflects the consideration we expect to be entitled to in exchange for those goods or services. In addition, U.S. GAAP requires disclosure of the nature, amount, timing, and uncertainty of revenue and cash flows arising from contracts with customers. The following is a description of revenue from contracts with customers:
Service charges and fees on deposit accounts
Service charges and fees on deposit accounts typically consist of fees charged for providing customers with deposit services. These fees are primarily comprised of account analysis fees, insufficient funds fees, and other various fees on deposit accounts. Service charges on deposit accounts include fees earned in lieu of compensating balances, and fees earned for performing cash management services and other deposit account services. Service charges on deposit accounts in this revenue category are recognized over the period in which the related service is provided. Treasury Management fees are billed monthly based on services rendered for the month.
Other Service charges, commissions, and fees
Other service charges, commissions, and fees primarily consist of credit and debit card interchange fees, automated teller machine (“ATM”) services, and various account services such as wires, safe deposit box, check issuance and cashing services. Revenue is recognized as the services are rendered or upon completion of services.
Zions card fee income includes interchange income from credit and debit cards and net fees earned from processing card transactions for merchants. Card income is recognized as earned. Reward program costs are recorded when the rewards are earned by the customer and presented as a reduction to interchange income.
The following schedule provides the major income categories within “Other Service charges, commissions and fees” that are in scope of ASC 606 for the three months ended June 30, 2018:
 Three Months Ended
June 30,
 Six Months Ended
June 30,
(In millions)2018 2017 2018 2017
        
Card Fee Income$34
 $33
 $67
 $67
ATM Fees3
 3
 5
 5
Other service charges4
 4
 7
 7
Other Commissions and fees5
 4
 10
 7
Ending balance$46
 $44
 $89
 $86

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Wealth management and trust income
Wealth management and trust income is comprised of a variety of products, including but not limited to: corporate and personal trust income, wealth management commissions, portfolio services, and advisory services. Revenue is recognized as the services are rendered or upon completion of services. Financial planning and estate services typically have performance obligations that are greater than 12 months, although the amount of future performance obligations are not significant.
Capital markets and foreign exchange
Capital markets and foreign exchange fees primarily consist of mutual fund distribution fees, municipal advisory services, and foreign exchange services provided to customers. Revenue is recognized as the services are rendered or upon completion of services.
Other noninterest income from contracts with customers
Other noninterest income from customers primarily consists of trust operations outsourcing and other various income streams. Revenue is recognized as the services are rendered or upon completion of services.
Disaggregation of Revenue
We provide services across different geographical areas, primarily in 11 Western U.S. States, under banking operations that have their own individual brand names, including Zions Bank, Amegy Bank, California Bank & Trust, National Bank of Arizona, Nevada State Bank, Vectra Bank Colorado, and The Commerce Bank of Washington. The operating segment listed as “Other” includes the Parent, Zions Management Services Company, certain nonbank financial services subsidiaries, centralized back-office functions, and eliminations of transactions between the segments.
The following schedule sets forth the noninterest income and net revenue by operating segments for the three months ended June 30, 2018 and 2017:
 Zions Bank Amegy CB&T
(In millions)2018 2017 2018 2017 2018 2017
            
Service charges and fees on deposit accounts$15
 $16
 $11
 $11
 $7
 $7
Other service charges, commissions, and fees18
 18
 9
 9
 6
 6
Wealth management and trust income4
 4
 3
 2
 1
 1
Capital markets and foreign exchange1
 1
 (1) (1) 1
 1
Total noninterest income from contracts with customers (ASC 606)38
 39
 22
 21
 15
 15
Other noninterest income (Non-ASC 606 customer related)
 (1) 9
 10
 4
 5
Total customer-related fees38
 38
 31
 31
 19
 20
Other noninterest income (non-customer related)
 
 
 
 
 
Total non-interest income38
 38
 31
 31
 19
 20
Net interest income170
 165
 126
 122
 129
 122
Total income less interest expense$208
 $203
 $157
 $153
 $148
 $142

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 NBAZ NSB Vectra
(In millions)2018 2017 2018 2017 2018 2017
            
Service charges and fees on deposit accounts$3
 $3
 $4
 $4
 $2
 $2
Other service charges, commissions, and fees3
 3
 3
 3
 2
 2
Wealth management and trust income
 
 1
 1
 
 
Capital markets and foreign exchange
 
 
 
 
 
Total noninterest income from contracts with customers (ASC 606)6
 6
 8
 8
 4
 4
Other noninterest income (Non-ASC 606 customer related)3
 4
 2
 3
 2
 3
Total customer-related fees9
 10
 10
 11
 6
 7
Other noninterest income (non-customer related)
 
 
 
 
 
Total non-interest income9
 10
 10
 11
 6
 7
Net interest income57
 50
 38
 33
 34
 31
Total income less interest expense$66
 $60
 $48
 $44
 $40
 $38
 TCBW Other 
Consolidated
Company
(In millions)2018 2017 2018 2017 2018 2017
            
Service charges and fees on deposit accounts$
 $
 $
 $
 $42
 $43
Other service charges, commissions, and fees1
 1
 4
 2
 46
 44
Wealth management and trust income
 
 4
 2
 13
 10
Capital markets and foreign exchange
 
 2
 1
 3
 2
Total noninterest income from contracts with customers (ASC 606)1
 1
 10
 5
 104
 99
Other noninterest income (Non-ASC 606 customer related)
 
 1
 (2) 21
 22
Total customer-related fees1
 1
 11
 3
 125
 121
Other noninterest income (non-customer related)
 
 13
 11
 13
 11
Total non-interest income1
 1
 24
 14
 138
 132
Net interest income13
 11
 (19) (6) 548
 528
Total income less interest expense$14
 $12
 $5
 $8
 $686
 $660
The following schedule sets forth the noninterest income and net revenue by operating segments for the six months ended June 30, 2018 and 2017:
 Zions Bank Amegy CB&T
(In millions)2018 2017 2018 2017 2018 2017
            
Service charges and fees on deposit accounts$29
 $30
 $22
 $22
 $14
 $14
Other service charges, commissions, and fees35
 34
 18
 19
 12
 12
Wealth management and trust income7
 7
 5
 4
 2
 1
Capital markets and foreign exchange3
 2
 (3) (3) 2
 2
Other non-interest income from contracts with customers
 
 
 
 
 
Total noninterest income from contracts with customers (ASC 606)74
 73
 42
 42
 30
 29
Other noninterest income (Non-ASC 606 customer related)(2) (2) 21
 17
 9
 7
Total customer-related fees72
 71
 63
 59
 39
 36
Other noninterest income (non-customer related)
 
 
 
 1
 1
Total non-interest income72
 71
 63
 59
 40
 37
Other real estate owned income
 
 
 
 
 
Net interest income337
 318
 253
 235
 260
 231
Total income less interest expense$409
 $389
 $316
 $294
 $300
 $268

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 NBAZ NSB Vectra
(In millions)2018 2017 2018 2017 2018 2017
            
Service charges and fees on deposit accounts$6
 $6
 $7
 $7
 $4
 $4
Other service charges, commissions, and fees6
 6
 6
 6
 3
 3
Wealth management and trust income1
 1
 2
 1
 1
 1
Capital markets and foreign exchange
 
 
 
 
 
Other non-interest income from contracts with customers
 
 
 
 
 
Total noninterest income from contracts with customers (ASC 606)13
 13
 15
 14
 8
 8
Other noninterest income (Non-ASC 606 customer related)6
 6
 4
 5
 3
 4
Total customer-related fees19
 19
 19
 19
 11
 12
Other noninterest income (non-customer related)
 
 
 
 
 
Total non-interest income19
 19
 19
 19
 11
 12
Other real estate owned income
 
 
 
 
 
Net interest income111
 100
 74
 64
 66
 61
Total income less interest expense$130
 $119
 $93
 $83
 $77
 $73
 TCBW Other 
Consolidated
Company
(In millions)2018 2017 2018 2017 2018 2017
            
Service charges and fees on deposit accounts$1
 $1
 $1
 $1
 $84
 $85
Other service charges, commissions, and fees1
 1
 8
 5
 89
 86
Wealth management and trust income
 
 6
 4
 24
 19
Capital markets and foreign exchange
 
 3
 3
 5
 4
Other non-interest income from contracts with customers
 
 
 1
 
 1
Total noninterest income from contracts with customers (ASC 606)2
 2
 18
 14
 202
 195
Other noninterest income (Non-ASC 606 customer related)1
 
 3
 4
 45
 41
Total customer-related fees3
 2
 21
 18
 247
 236
Other noninterest income (non-customer related)
 
 28
 27
 29
 28
Total non-interest income3
 2
 49
 45
 276
 264
Other real estate owned income
 
 (1) 
 (1) 
Net interest income25
 22
 (36) (14) 1,090
 1,017
Total income less interest expense$28
 $24
 $12
 $31
 $1,365
 $1,281
Revenue from contracts with customers did not generate significant contract assets and liabilities. Contract receivables are included in Other Assets. Payment terms vary by services offered, and the timing between completion of performance obligations and payment is typically not significant.
10.11.RETIREMENT PLANS
The following discloses the net periodic benefit cost (credit) and its components for the Company’s pension and other retirement plans:
(In millions)Three Months Ended September 30, Nine Months Ended September 30,Three Months Ended June 30, Six Months Ended June 30,
2017 2016 2017 20162018 2017 2018 2017
              
Interest cost$2

$2
 $5
 $5
$1

$2
 $3
 $4
Expected return on plan assets(3)
(3) (9) (9)(3)
(3) (6) (6)
Partial settlement loss1
 3
 2
 3

 1
 1
 1
Amortization of net actuarial loss1

1
 4
 5
1

1
 1
 2
Net periodic benefit cost$1
 $3
 $2
 $4
Net periodic benefit cost (benefit)$(1) $1
 $(1) $1
As disclosed in our 20162017 Annual Report on Form 10-K, the Company has frozen its participation and benefit accruals for the pension plan and its contributions for individual benefit payments in the postretirement benefit plan.
During

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12.INCOME TAXES
The effective income tax rate of 22.1% for the thirdsecond quarter of 2018 was lower than the 2017 second quarter rate of 32.3%. The effective tax rates for the Company revised its pension planfirst six months of 2018 and 2017 were 22.5% and 28.7%, respectively. The tax rates for 2018 and 2017 were reduced by nontaxable municipal interest income and nontaxable income from certain bank-owned life insurance. The income tax rate for 2018 was positively impacted by the decrease in the corporate federal income tax rate to offer21% from 35% due to the Tax Cuts and Jobs Act, which was effective January 1, 2018. This rate benefit was partially reduced by the non-deductibility of Federal Deposit Insurance Corporation (“FDIC”) premiums and certain participantsfringe benefits as enacted by the new tax law. The tax rate for 2017 was also impacted by a temporary opportunityone-time $14 million benefit to make an electiontax expense related to receive an immediate distributionstate tax adjustments and a one-time $4 million benefit due to changes in the carrying value of various state deferred tax items.
We had a net deferred tax asset (“DTA”) balance of $149 million at June 30, 2018, compared with $93 million at December 31, 2017. The increase in the net DTA resulted primarily from the pension plan. increase of accrued compensation and unrealized losses in OCI related to securities, and the decrease in deferred tax liabilities related to premises and equipment and the deferred gain on a prior period debt exchange. Net charge-offs exceeding the provision for loan losses offset some of the overall increase in DTA.
13.NET EARNINGS PER COMMON SHARE
Basic and diluted net earnings per common share based on the weighted average outstanding shares are summarized as follows:
 Three Months Ended
June 30,
 Six Months Ended
June 30,
(In millions, except shares and per share amounts)2018 2017 2018 2017
        
Basic:       
Net income$197
 $168
 $435
 $308
Less common and preferred dividends57
 30
 104
 57
Undistributed earnings140
 138
 331
 251
Less undistributed earnings applicable to nonvested shares1
 1
 3
 3
Undistributed earnings applicable to common shares139
 137
 328
 248
Distributed earnings applicable to common shares47
 16
 86
 32
Total earnings applicable to common shares$186
 $153
 $414
 $280
Weighted average common shares outstanding (in thousands)195,583
 201,822
 196,149
 202,083
Net earnings per common share$0.95
 $0.76
 $2.11
 $1.39
Diluted:       
Total earnings applicable to common shares$186
 $153
 $414
 $280
Weighted average common shares outstanding (in thousands)195,583
 201,822
 196,149
 202,083
Dilutive effect of common stock warrants (in thousands)12,640
 5,351
 12,627
 6,159
Dilutive effect of stock options (in thousands)1,024
 1,010
 1,083
 1,111
Weighted average diluted common shares outstanding (in thousands)209,247
 208,183
 209,859
 209,353
Net earnings per common share$0.89
 $0.73
 $1.97
 $1.34
The window for this opportunity is between August 1, 2017following schedule presents the weighted average shares of stock awards that were anti-dilutive and November 24, 2017.not included in the calculation of diluted earnings per share.
 Three Months Ended
June 30,
 Six Months Ended
June 30,
(In thousands)2018 2017 2018 2017
        
Restricted stock and restricted stock units1,709
 2,094
 1,733
 2,108

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11.INCOME TAXES
The effective income tax rate of 34.2% for the third quarter of 2017 was slightly higher than the 2016 third quarter rate of 33.9%. The effective tax rates for the first nine months of 2017 and 2016 were 30.6% and 33.3%, respectively. These tax rates for both 2017 and 2016 generally benefited from the non-taxability of certain income items. The 2017 effective tax rate was further impacted by the following factors:
We re-evaluated our state tax positions in the first quarter of 2017, which resulted in a one-time $14 million benefit to income tax expense.
We reduced income tax expense by $4 million in the second quarter of 2017 due to changes in the carrying value of various state deferred tax items.
We also recorded an $8 million benefit in the first nine months of 2017 from the implementation of new accounting guidance related to stock-based compensation.
We had a net deferred tax asset (“DTA”) balance of $207 million at September 30, 2017, compared with $250 million at December 31, 2016, which included a $4 million valuation allowance at each respective reporting date for certain acquired net operating loss carryforwards included in our acquisition of the remaining interest in a less significant subsidiary. We evaluate deferred tax assets on a regular basis to determine whether an additional valuation allowance is required. Based on this evaluation, and considering the weight of the positive evidence compared to the negative evidence, we have concluded that an additional valuation allowance is not required as of September 30, 2017.
12.14.OPERATING SEGMENT INFORMATION
We manage our operations and prepare management reports and other information with a primary focus on geographical area. Our banking operations are managed under their own individual brand names, including Zions Bank, Amegy Bank, California Bank & Trust, National Bank of Arizona, Nevada State Bank, Vectra Bank Colorado, and The Commerce Bank of Washington. Performance assessment and resource allocation are based upon this geographical structure. We use an internal funds transfer pricing (“FTP”) allocation system to report results of operations for business segments. This process continues to be refined. Prior period amounts have been reclassified to reflect these changes. Total average loans and deposits presented for the banking segments do not include intercompany amounts between banking segments, but may include deposits with the Other segment. Prior period amounts have been reclassified to reflect these changes.
As of SeptemberJune 30, 2017,2018, our banking business is conducted through 7 locally managed and branded segments in distinct geographical areas. Zions Bank operates 9897 branches in Utah, 23 branches in Idaho, and one branch in Wyoming. Amegy operates 73 branches in Texas. CB&T operates 9291 branches in California. NBAZ operates 58 branches in Arizona. NSB operates 50 branches in Nevada. Vectra operates 36 branches in Colorado and one branch in New Mexico. TCBW operates one branch in Washington and one branch in Oregon.
The operating segment identified as “Other” includes the Parent, Zions Management Services Company, certain nonbank financial service subsidiaries, centralized back-office functions, and eliminations of transactions between segments. The major components of net interest income at the Bank’s back officeback-office include the revenue associated with the investments securities portfolio and the offset of the FTP costs and benefits provided to the business segments. Throughout 2016 consolidation efforts continued, which resulted in transitioning full-time equivalents from the business segments to the Company’s back-office units. Due to the continuing nature and timing of this change, the Company’s back-office units retained more direct expenses in 2016 than in prior years. In the first quarter of 2017 we made changes to the FTP process and internal allocation of central expenses to better reflect the performance of business segments. Prior period amounts have been revised to reflect the impact of these changes had they been instituted in 2016.
The following schedule does not present total assets or income tax expense for each operating segment, but instead presents average loans, average deposits and income before income taxes because these are the metrics that management uses when evaluating performance and making decisions pertaining to the operating segments. The Parent’s net interest income includes interest expense on other borrowed funds. The condensed statement of income

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identifies the components of income and expense which affect the operating amounts presented in the Other segment.
The accounting policies of the individual operating segments are the same as those of the Company. Transactions between operating segments are primarily conducted at fair value, resulting in profits that are eliminated for reporting consolidated results of operations.

ZIONS BANCORPORATION AND SUBSIDIARIES

The following schedule presents selected operating segment information for the three months ended SeptemberJune 30, 20172018 and 2016:2017:
(In millions)Zions Bank Amegy CB&T NBAZ NSBZions Bank Amegy CB&T NBAZ NSB
2017 2016 2017 2016 2017 2016 2017 2016 2017 20162018 2017 2018 2017 2018 2017 2018 2017 2018 2017
SELECTED INCOME STATEMENT DATASELECTED INCOME STATEMENT DATA              SELECTED INCOME STATEMENT DATA              
Net interest income$164
 $157
 $122
 $114
 $118
 $110
 $53
 $48
 $34
 $31
$170
 $165
 $126
 $122
 $129
 $122
 $57
 $50
 $38
 $33
Provision for loan losses(15) (1) 33
 24
 (4) (2) (8) 
 (3) (4)4
 (2) (11) 7
 2
 (1) 7
 (1) 
 
Net interest income after provision for loan losses179
 158
 89
 90
 122
 112
 61
 48
 37
 35
166
 167
 137
 115
 127
 123
 50
 51
 38
 33
Noninterest income39
 39
 28
 32
 20
 18
 10
 11
 11
 10
38
 37
 31
 30
 19
 19
 10
 10
 10
 10
Noninterest expense107
 108
 86
 75
 74
 75
 38
 36
 35
 34
118
 109
 91
 89
 77
 76
 38
 36
 36
 35
Income (loss) before income taxes$111
 $89
 $31
 $47
 $68
 $55
 $33
 $23
 $13
 $11
$86
 $95
 $77
 $56
 $69
 $66
 $22
 $25
 $12
 $8
SELECTED AVERAGE BALANCE SHEET DATASELECTED AVERAGE BALANCE SHEET DATA              SELECTED AVERAGE BALANCE SHEET DATA              
Total loans$12,543
 $12,629
 $11,170
 $10,666
 $9,575
 $9,341
 $4,267
 $4,156
 $2,347
 $2,288
Total deposits15,773
 15,948
 10,862
 11,068
 11,021
 10,929
 4,816
 4,632
 4,276
 4,223
Total average loans$12,633
 $12,483
 $11,387
 $10,856
 $9,908
 $9,476
 $4,640
 $4,246
 $2,349
 $2,372
Total average deposits15,983
 15,982
 11,060
 11,218
 11,181
 10,917
 4,942
 4,762
 4,314
 4,233
(In millions)Vectra TCBW Other 
Consolidated
Company
    Vectra TCBW Other 
Consolidated
Company
    
2017 2016 2017 2016 2017 2016 2017 2016    2018 2017 2018 2017 2018 2017 2018 2017    
SELECTED INCOME STATEMENT DATASELECTED INCOME STATEMENT DATA              SELECTED INCOME STATEMENT DATA              
Net interest income$32
 $31
 $12
 $10
 $(13) $(32) $522
 $469
    $34
 $31
 $13
 $11
 $(19) $(6) $548
 $528
    
Provision for loan losses
 2
 3
 
 (1) 
 5
 19
    2
 3
 1
 
 
 1
 5
 7
    
Net interest income after provision for loan losses32
 29
 9
 10
 (12) (32) 517
 450
    32
 28
 12
 11
 (19) (7) 543
 521
    
Noninterest income7
 6
 1
 1
 23
 28
 139
 145
    6
 7
 1
 1
 23
 18
 138
 132
    
Noninterest expense25
 25
 5
 5
 43
 45
 413
 403
    26
 25
 5
 5
 37
 30
 428
 405
    
Income (loss) before income taxes$14
 $10
 $5
 $6
 $(32) $(49) $243
 $192
    $12
 $10
 $8
 $7
 $(33) $(19) $253
 $248
    
SELECTED AVERAGE BALANCE SHEET DATASELECTED AVERAGE BALANCE SHEET DATA              SELECTED AVERAGE BALANCE SHEET DATA              
Total loans$2,683
 $2,489
 $939
 $796
 $308
 $122
 $43,832
 $42,487
    
Total deposits2,757
 2,663
 1,098
 1,010
 1,318
 202
 51,921
 50,675
    
Total average loans$2,881
 $2,603
 $1,117
 $911
 $363
 $296
 $45,278
 $43,243
    
Total average deposits2,784
 2,728
 1,048
 1,094
 1,584
 1,400
 52,896
 52,334
    

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ZIONS BANCORPORATION AND SUBSIDIARIES

The following schedule presents selected operating segment information for the ninesix months ended SeptemberJune 30, 20172018 and 2016:2017:
(In millions)Zions Bank Amegy CB&T NBAZ NSBZions Bank Amegy CB&T NBAZ NSB
2017 2016 2017 2016 2017 2016 2017 2016 2017 20162018 2017 2018 2017 2018 2017 2018 2017 2018 2017
SELECTED INCOME STATEMENT DATASELECTED INCOME STATEMENT DATA              SELECTED INCOME STATEMENT DATA              
Net interest income$483
 $462
 $359
 $344
 $351
 $322
 $153
 $140
 $98
 $91
$337
 $318
 $253
 $235
 $260
 $231
 $111
 $100
 $74
 $64
Provision for loan losses18
 (31) 41
 159
 (10) (1) (7) 2
 (8) (29)2
 33
 (56) 8
 4
 (6) 9
 1
 
 (5)
Net interest income after provision for loan losses465
 493
 318
 185
 361
 323
 160
 138
 106
 120
335
 285
 309
 227
 256
 237
 102
 99
 74
 69
Noninterest income112
 112
 87
 90
 56
 51
 29
 30
 30
 29
73
 72
 64
 59
 40
 36
 19
 20
 20
 20
Noninterest expense327
 320
 259
 244
 225
 221
 111
 109
 105
 104
232
 221
 170
 173
 154
 151
 76
 73
 73
 70
Income (loss) before income taxes$250
 $285
 $146
 $31
 $192
 $153
 $78
 $59
 $31
 $45
$176
 $136
 $203
 $113
 $142
 $122
 $45
 $46
 $21
 $19
SELECTED AVERAGE BALANCE SHEET DATASELECTED AVERAGE BALANCE SHEET DATA              SELECTED AVERAGE BALANCE SHEET DATA              
Total loans$12,505
 $12,512
 $10,890
 $10,599
 $9,453
 $9,170
 $4,258
 $4,010
 $2,352
 $2,275
Total deposits16,001
 15,866
 11,131
 11,100
 10,953
 10,764
 4,747
 4,553
 4,240
 4,113
Total average loans$12,543
 $12,486
 $11,379
 $10,747
 $9,919
 $9,391
 $4,591
 $4,254
 $2,349
 $2,355
Total average deposits15,848
 16,117
 10,938
 11,268
 11,150
 10,919
 4,863
 4,712
 4,269
 4,222
(In millions)Vectra TCBW Other 
Consolidated
Company
    Vectra TCBW Other 
Consolidated
Company
    
2017 2016 2017 2016 2017 2016 2017 2016    2018 2017 2018 2017 2018 2017 2018 2017    
SELECTED INCOME STATEMENT DATASELECTED INCOME STATEMENT DATA              SELECTED INCOME STATEMENT DATA              
Net interest income$93
 $90
 $34
 $28
 $(32) $(91) $1,539
 $1,386
    $66
 $61
 $25
 $22
 $(36) $(14) $1,090
 $1,017
    
Provision for loan losses
 (4) 2
 
 (1) (1) 35
 95
    5
 
 2
 (1) (1) 
 (35) 30
    
Net interest income after provision for loan losses93
 94
 32
 28
 (31) (90) 1,504
 1,291
    61
 61
 23
 23
 (35) (14) 1,125
 987
    
Noninterest income19
 17
 3
 3
 68
 56
 404
 388
    12
 12
 3
 2
 45
 43
 276
 264
    
Noninterest expense75
 73
 16
 15
 114
 95
 1,232
 1,181
    53
 50
 11
 10
 71
 71
 840
 819
    
Income (loss) before income taxes$37
 $38
 $19
 $16
 $(77) $(129) $676
 $498
    $20
 $23
 $15
 $15
 $(61) $(42) $561
 $432
    
SELECTED AVERAGE BALANCE SHEET DATASELECTED AVERAGE BALANCE SHEET DATA              SELECTED AVERAGE BALANCE SHEET DATA              
Total loans$2,607
 $2,453
 $909
 $769
 $244
 $80
 $43,218
 $41,868
    
Total deposits2,758
 2,704
 1,098
 970
 1,227
 (8) 52,155
 50,062
    
Total average loans$2,837
 $2,569
 $1,101
 $894
 $370
 $210
 $45,089
 $42,906
    
Total average deposits2,748
 2,759
 1,060
 1,097
 1,571
 1,180
 52,447
 52,274
    
ITEM 3.QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK
Interest rate and market risks are among the most significant risks regularly undertaken by us, and they are closely monitored as previously discussed. A discussion regarding our management of interest rate and market risk is included in the section entitled “Interest Rate and Market Risk Management” in this Form 10-Q.
ITEM 4.CONTROLS AND PROCEDURES
The Company’s management, with the participation of the Company’s Chief Executive Officer and Chief Financial Officer, has evaluated the effectiveness of the Company’s disclosure controls and procedures as of SeptemberJune 30, 2017.2018. Based on that evaluation, the Company’s Chief Executive Officer and Chief Financial Officer concluded that the Company’s disclosure controls and procedures were effective as of SeptemberJune 30, 2017.2018. There were no changes in the Company’s internal control over financial reporting during the thirdsecond quarter of 20172018 that have materially affected, or are reasonably likely to materially affect, the Company’s internal control over financial reporting.
PART II.OTHER INFORMATION
ITEM 1.LEGAL PROCEEDINGS
The information contained in Note 9 of the Notes to Consolidated Financial Statements is incorporated by reference herein.

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ZIONS BANCORPORATION AND SUBSIDIARIES

ITEM 1A.RISK FACTORS
We believe there have been no material changes in the risk factors included in Zions Bancorporation’s 20162017 Annual Report on Form 10-K.
ITEM 2.UNREGISTERED SALES OF EQUITY SECURITIES AND USE OF PROCEEDS
The following schedule summarizes the Company’s share repurchases for the thirdsecond quarter of 2017:2018:
SHARE REPURCHASES
Period 
Total��number
of shares
repurchased 1
 
Average
price paid
per share
 Total number of shares purchased as part of publicly announced plans or programs 
Approximate dollar value of shares that may yet be 
purchased under the plan
               
July  504,117
  $45.32
  502,400
   $442,230,302
 
August  2,034,567
  45.38
  2,027,832
   350,000,045
 
September  508
  45.89
  
   350,000,045
 
Third quarter  2,539,192
  45.45
  2,530,232
     
Period 
Total number
of shares
repurchased 1
 
Average
price paid
per share
 Total number of shares purchased as part of publicly announced plans or programs 
Approximate dollar value of shares that may yet be 
purchased under the plan
               
April  224,844
  $55.47
  216,093
   $108,000,798
 
May  2,029,125
  55.92
  1,933,714
   811
 
June  10,976
  56.49
  
   811
 
Second quarter  2,264,945
  55.88
  2,149,807
     
1 
Represents common shares acquired from employees in connection with our stock compensation plan in addition to shares acquired under previously reported share repurchase plans. Shares were acquired from employees to pay for their payroll taxes and stock option exercise cost upon the vesting of restricted stock and restricted stock units, and the exercise of stock options, under provisions of an employee share-based compensation plan.


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ZIONS BANCORPORATION AND SUBSIDIARIES

ITEM 6.EXHIBITS
a)Exhibits
Exhibit
Number
 Description 
    
 Restated Articles of Incorporation of Zions Bancorporation dated July 8, 2014, incorporated by reference to Exhibit 3.1 of Form 8-K/A filed on July 18, 2014.*
    
 Restated Bylaws of Zions Bancorporation dated February 27, 2015, incorporated by reference to Exhibit 3.2 of Form 10-Q for the quarter ended March 31, 2015.*
    
Zions Bancorporation 2018-2020 Value Sharing Plan (filed herewith).
Zions Bancorporation Restated Pension Plan effective January 1, 2009, including amendments adopted through December 31, 2013 (filed herewith).
Zions Bancorporation Payshelter 401(k) and Employee Stock Ownership Plan, Restated and Amended effective January 31, 2007 (filed herewith).
 Certification by Chief Executive Officer required by Rules 13a-15(f) and 15d-15(f) under the Securities Exchange Act of 1934 (filed herewith). 
    
 Certification by Chief Financial Officer required by Rules 13a-15(f) and 15d-15(f) under the Securities Exchange Act of 1934 (filed herewith). 
    
 Certification by Chief Executive Officer and Chief Financial Officer required by Sections 13(a) or 15(d), as applicable, of the Securities Exchange Act of 1934 (15 U.S.C. 78m) and 18 U.S.C. Section 1350 (furnished herewith). 
    
101 
Interactive data files pursuant to Rule 405 of Regulation S-T: (i) the Consolidated Balance Sheets as of SeptemberJune 30, 20172018 and December 31, 2016,2017, (ii) the Consolidated Statements of Income for the three months ended SeptemberJune 30, 2018 and June 30, 2017 and September 30, 2016 and the ninesix months ended SeptemberJune 30, 20172018 and SeptemberJune 30, 2016,2017, (iii) the Consolidated Statements of Comprehensive Income for the three months ended SeptemberJune 30, 2018 and June 30, 2017 and September 30, 2016 and the ninesix months ended SeptemberJune 30, 20172018 and SeptemberJune 30, 2016,2017, (iv) the Consolidated Statements of Changes in Shareholders’ Equity for the ninesix months ended SeptemberJune 30, 20172018 and SeptemberJune 30, 2016,2017, (v) the Consolidated Statements of Cash Flows for the three months ended SeptemberJune 30, 2018 and June 30, 2017 and September 30, 2016 and the ninesix months ended SeptemberJune 30, 20172018 and SeptemberJune 30, 20162017 and (vi) the Notes to Consolidated Financial Statements (filed herewith).
 
* Incorporated by reference


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ZIONS BANCORPORATION AND SUBSIDIARIES


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.

    
 
ZIONS BANCORPORATION
 
/s/ Harris H. Simmons
Harris H. Simmons, Chairman and
Chief Executive Officer
 
/s/ Paul E. Burdiss
Paul E. Burdiss, Executive Vice President and Chief Financial Officer
Date: November 8, 2017August 7, 2018

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