10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q

☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF

THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended September 30, 2023

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 000-24939

EAST WEST BANCORP, INC.

(Exact name of registrant as specified in its charter)

Delaware

(State or other jurisdiction of incorporation or organization)

95-4703316

(I.R.S. Employer Identification No.)

135 North Los Robles Ave., 7th Floor, Pasadena, California 91101

(Address of principal executive offices) (Zip Code)

Registrant’s telephone number, including area code:

(626) 768-6000

Securities registered pursuant to Section 12(b) of the Act: 

Title of each class	Trading Symbol(s)	Name of each exchange  on which registered
Common Stock, par value $0.001 per share	EWBC	The Nasdaq Global Select Market

    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 ☒ No ☐

    Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted 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 such files).

Yes ☒ No ☐

    Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of the Exchange Act.

Large accelerated filer	☒	Accelerated 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 ☒

    Number of shares outstanding of the issuer’s common stock on the latest practicable date: 140,930,142 shares as of October 31, 2023.

TABLE OF CONTENTS

			Page
FORWARD-LOOKING STATEMENTS			3
PART I — FINANCIAL INFORMATION			5
	Item 1.	Consolidated Financial Statements	5
		Consolidated Balance Sheet (Unaudited)	5
		Consolidated Statement of Income (Unaudited)	6
		Consolidated Statement of Comprehensive Income (Loss) (Unaudited)	7
		Consolidated Statement of Changes in Stockholders’ Equity (Unaudited)	8
		Consolidated Statement of Cash Flows (Unaudited)	9
		Notes to Consolidated Financial Statements (Unaudited)	11
		1 — Basis of Presentation	11
		2 — Current Accounting Developments and Summary of Significant Accounting Policies	12
		3 — Fair Value Measurement and Fair Value of Financial Instruments	14
		4 — Assets Purchased under Resale Agreements and Sold under Repurchase Agreements	24
		5 — Securities	26
		6 — Derivatives	32
		7 — Loans Receivable and Allowance for Credit Losses	39
		8 — Investments in Qualified Affordable Housing Partnerships, Tax Credit and Other Investments, Net and Variable Interest Entities	54
		9 — Goodwill	55
		10 — Short-Term Borrowings and Long-Term Debt	55
		11 — Commitments and Contingencies	56
		12 — Stock Compensation Plans	58
		13 — Stockholders’ Equity and Earnings Per Share	59
		14 — Accumulated Other Comprehensive Income (Loss)	59
		15 — Business Segments	61
	Item 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations	64
	Item 3.	Quantitative and Qualitative Disclosures About Market Risk	108
	Item 4.	Controls and Procedures	108
PART II — OTHER INFORMATION			109
	Item 1.	Legal Proceedings	109
	Item 1A.	Risk Factors	109
	Item 2.	Unregistered Sales of Equity Securities and Use of Proceeds	110
	Item 5.	Other Information	110
	Item 6.	Exhibits	111
GLOSSARY OF ACRONYMS			112
SIGNATURE			113

2

Forward-Looking Statements

Certain matters discussed in this Quarterly Report on Form 10-Q (this “Form 10-Q”) contain forward-looking statements that are intended to be covered by the safe harbor provisions for such statements provided by the Private Securities Litigation Reform Act of 1995. In addition, East West Bancorp, Inc. (referred to herein on an unconsolidated basis as “East West” and on a consolidated basis as the “Company,” “we” or “EWBC”) may make forward-looking statements in other documents that it files with, or furnishes to, the United States (“U.S.”) Securities and Exchange Commission (“SEC”) and management may make forward-looking statements to analysts, investors, media members and others. Forward-looking statements are those that do not relate to historical facts, and that are based on current assumptions, beliefs, estimates, expectations and projections, many of which, by their nature, are inherently uncertain and beyond the Company’s control. Forward-looking statements may relate to various matters, including the Company’s financial condition, results of operations, plans, objectives, future performance, business or industry, and usually can be identified by the use of forward-looking words, such as “anticipates,” “assumes,” “believes,” “can,” “continues,” “could,” “estimates,” “expects,” “forecasts,” “goal,” “intends,” “likely,” “may,” “might,” “objective,” “plans,” “potential,” “projects,” “remains,” “should,” “target,” “trend,” “will,” “would,” or similar expressions or variations thereof, and the negative thereof, but these terms are not the exclusive means of identifying such statements. You should not place undue reliance on forward-looking statements, as they are subject to risks and uncertainties, including, but not limited to, those described below. When considering these forward-looking statements, you should keep in mind these risks and uncertainties, as well as any cautionary statements the Company may make.

There are various important factors that could cause future results to differ materially from historical performance and any forward-looking statements. Factors that might cause such differences, include, but are not limited to:

•changes in the global economy, including an economic slowdown, capital or financial market disruption, supply chain disruption, level of inflation, interest rate environment, housing prices, employment levels, rate of growth and general business conditions, which could result in, among other things, reduced demand for loans, reduced availability of funding or increased funding costs, declines in asset values and/or recognition of allowance for credit losses;

•changes in local, regional and global business, economic and political conditions and geopolitical events, such as political unrest, wars and acts of terrorism;

•the soundness of other financial institutions and the impacts related to or resulting from recent bank failures and other economic and industry volatility, including potential increased regulatory requirements, Federal Deposit Insurance Corporation (“FDIC”) insurance premiums and assessments, losses in the value of our investment portfolio, deposit withdrawals, or other adverse consequences of negative market perceptions of the banking industry or the Company;

•changes in laws or the regulatory environment, including regulatory reform initiatives and policies of the U.S. Department of the Treasury, the Board of Governors of the Federal Reserve System (“Federal Reserve”), the FDIC, the SEC, the Consumer Financial Protection Bureau (“CFPB”), the California Department of Financial Protection and Innovation — Division of Financial Institutions, China’s National Administration of Financial Regulation, the Hong Kong Monetary Authority, the Hong Kong Securities and Futures Commission, and the Monetary Authority of Singapore;

•changes and effects thereof in trade, monetary and fiscal policies and laws, including the ongoing trade, economic and political disputes between the U.S. and the People’s Republic of China and the monetary policies of the Federal Reserve;

•changes in the commercial and consumer real estate markets;

•changes in consumer or commercial spending, savings and borrowing habits, and patterns and behaviors;

•the impact from potential changes to income tax laws and regulations, federal spending and economic stimulus programs;

•the impact of any future U.S. federal government shutdown and uncertainty regarding the U.S. federal government’s debt limit and credit rating;

•the Company’s ability to compete effectively against financial institutions and other entities, including as a result of emerging technologies;

•the success and timing of the Company’s business strategies;

•the Company’s ability to retain key officers and employees;

•the impact on the Company’s funding costs, net interest income and net interest margin from changes in key variable market interest rates, competition, regulatory requirements and the Company’s product mix;

•changes in the Company’s costs of operation, compliance and expansion;

•the Company’s ability to adopt and successfully integrate new technologies into its business in a strategic manner;

3

•the impact of communications or technology disruption, failure in, or breach of, the Company’s operational or security systems or infrastructure, or those of third party vendors with which the Company does business, including as a result of cyber-attacks; and other similar matters which could result in, among other things, confidential and/or proprietary information being disclosed or misused, and materially impact the Company’s ability to provide services to its clients;

•the adequacy of the Company’s risk management framework, disclosure controls and procedures and internal control over financial reporting;

•future credit quality and performance, including the Company’s expectations regarding future credit losses and allowance levels;

•the impact of adverse changes to the Company’s credit ratings from major credit rating agencies;

•the impact of adverse judgments or settlements in litigation;

•the impact of political developments, pandemics, wars, civil unrest, terrorism or other hostilities that may disrupt or increase volatility in securities or otherwise affect business and economic conditions on the Company and its customers;

•heightened regulatory and governmental oversight and scrutiny of the Company’s business practices, including dealings with consumers;

•the impact of reputational risk from negative publicity, fines, penalties and other negative consequences from regulatory violations, legal actions and the Company’s interactions with business partners, counterparties, service providers and other third parties;

•the impact of regulatory investigations and enforcement actions;

•changes in accounting standards as may be required by the Financial Accounting Standards Board (“FASB”) or other regulatory agencies and their impact on the Company’s critical accounting policies and assumptions;

•the Company’s capital requirements and its ability to generate capital internally or raise capital on favorable terms;

•the impact on the Company’s liquidity due to changes in the Company’s ability to receive dividends from its subsidiaries;

•any strategic acquisitions or divestitures;

•changes in the equity and debt securities markets;

•fluctuations in the Company’s stock price;

•fluctuations in foreign currency exchange rates;

•the impact of increased focus on social, environmental and sustainability matters, which may affect the operations of the Company and its customers and the economy more broadly; and

•the impact of climate change, natural or man-made disasters or calamities, such as wildfires, droughts, hurricanes, flooding and earthquakes or other events that may directly or indirectly result in a negative impact on the financial performance of the Company and its customers.

For a more detailed discussion of some of the factors that might cause such differences, see the Company’s Annual Report on Form 10-K for the year ended December 31, 2022, filed with the SEC on February 27, 2023 (the “Company’s 2022 Form 10-K”) under the heading Item 1A. Risk Factors, and Item 1A. Risk Factors of this Form 10-Q. You should treat forward-looking statements as speaking only as of the date they are made and based only on information then actually known to the Company. The Company does not undertake, and specifically disclaims, any obligation to update or revise any forward-looking statements to reflect the occurrence of events or circumstances after the date of such statements except as required by law.

4

PART I — FINANCIAL INFORMATION

ITEM 1. CONSOLIDATED FINANCIAL STATEMENTS

EAST WEST BANCORP, INC. AND SUBSIDIARIES

CONSOLIDATED BALANCE SHEET

($ in thousands, except shares)

(Unaudited)

	September 30, 2023		December 31, 2022
ASSETS
Cash and due from banks	$	495,976	$	534,980
Interest-bearing cash with banks	4,065,202		2,946,804
Cash and cash equivalents	4,561,178		3,481,784
Interest-bearing deposits with banks	17,213		139,021
Assets purchased under resale agreements (“resale agreements”)	785,000		792,192
Securities:
Available-for-sale (“AFS”) debt securities, at fair value (amortized cost of $6,976,331 and $6,879,225)	6,039,837		6,034,993
Held-to-maturity (“HTM”) debt securities, at amortized cost (fair value of $2,308,048 and $2,455,171)	2,964,235		3,001,868
Loans held-for-sale	4,762		25,644
Loans held-for-investment (net of allowance for loan losses of $655,523 and $595,645)	50,251,661		47,606,785
Investments in qualified affordable housing partnerships, tax credit and other investments, net	901,559		763,256
Premises and equipment (net of accumulated depreciation of $155,043 and $148,126)	87,888		89,191
Goodwill	465,697		465,697
Operating lease right-of-use assets	97,782		103,681
Other assets	2,112,646		1,608,038
TOTAL	$	68,289,458	$	64,112,150
LIABILITIES
Deposits:
Noninterest-bearing	$	16,169,072	$	21,051,090
Interest-bearing	38,917,959		34,916,759
Total deposits	55,087,031		55,967,849
Short-term borrowings	4,500,000		—
Assets sold under repurchase agreements (“repurchase agreements”)	—		300,000
Long-term debt and finance lease liabilities	153,087		152,400
Operating lease liabilities	107,695		111,931
Accrued expenses and other liabilities	1,844,939		1,595,358
Total liabilities	61,692,752		58,127,538
COMMITMENTS AND CONTINGENCIES (Note 11)
STOCKHOLDERS’ EQUITY
Common stock, $0.001 par value, 200,000,000 shares authorized; 169,316,546 and 168,459,045 shares issued	169		168
Additional paid-in capital	1,969,239		1,936,389
Retained earnings	6,294,751		5,582,546
Treasury stock, at cost 27,830,597 and 27,511,199 shares	(792,076)		(768,862)
Accumulated other comprehensive loss (“AOCI”), net of tax	(875,377)		(765,629)
Total stockholders’ equity	6,596,706		5,984,612
TOTAL	$	68,289,458	$	64,112,150

See accompanying Notes to Consolidated Financial Statements.

5

EAST WEST BANCORP, INC. AND SUBSIDIARIES

CONSOLIDATED STATEMENT OF INCOME

($ and shares in thousands, except per share data)

(Unaudited)

	Three Months Ended September 30,				Nine Months Ended September 30,
	2023		2022		2023		2022
INTEREST AND DIVIDEND INCOME
Loans receivable, including fees	$	818,719	$	560,452	$	2,318,369	$	1,376,978
Debt securities	69,778		51,092		204,679		139,935
Resale agreements	4,460		6,769		12,932		23,705
Restricted equity securities	1,079		843		3,054		2,274
Interest-bearing cash and deposits with banks	67,751		9,080		164,393		17,127
Total interest and dividend income	961,787		628,236		2,703,427		1,560,019
INTEREST EXPENSE
Deposits	338,296		68,894		842,567		104,371
Federal funds purchased and other short-term borrowings	49,575		1,177		107,432		1,427
Federal Home Loan Bank (“FHLB”) advances	—		392		6,430		1,529
Repurchase agreements	193		4,421		1,456		8,855
Long-term debt and finance lease liabilities	2,910		1,543		8,122		3,463
Total interest expense	390,974		76,427		966,007		119,645
Net interest income before provision for credit losses	570,813		551,809		1,737,420		1,440,374
Provision for credit losses	42,000		27,000		88,000		48,500
Net interest income after provision for credit losses	528,813		524,809		1,649,420		1,391,874
NONINTEREST INCOME
Lending fees	20,312		20,289		61,799		59,869
Deposit account fees	22,622		23,636		66,610		66,323
Interest rate contracts and other derivative income	11,208		8,761		21,145		29,695
Foreign exchange income	12,334		10,083		38,245		34,143
Wealth management fees	5,877		8,903		19,070		21,494
Net (losses) gains on sales of loans	(12)		2,129		(41)		5,968
Net (losses) gains on AFS debt securities	—		—		(10,000)		1,306
Other investment income (loss)	1,751		(580)		7,675		5,910
Other income	2,660		2,331		10,858		9,031
Total noninterest income	76,752		75,552		215,361		233,739
NONINTEREST EXPENSE
Compensation and employee benefits	123,153		127,580		377,744		357,213
Occupancy and equipment expense	15,353		15,920		47,028		46,853
Deposit insurance premiums and regulatory assessments	8,583		4,875		24,755		14,519
Deposit account expense	11,585		6,707		31,753		17,071
Data processing	3,645		3,725		10,205		10,876
Computer software expense	8,116		6,889		22,955		20,755
Other operating expense	31,885		30,403		102,092		86,243
Amortization of tax credit and other investments	49,694		19,874		115,718		48,753
Total noninterest expense	252,014		215,973		732,250		602,283
INCOME BEFORE INCOME TAXES	353,551		384,388		1,132,531		1,023,330
INCOME TAX EXPENSE	65,813		89,049		210,323		232,010
NET INCOME	$	287,738	$	295,339	$	922,208	$	791,320
EARNINGS PER SHARE (“EPS”)
BASIC	$	2.03	$	2.10	$	6.52	$	5.59
DILUTED	$	2.02	$	2.08	$	6.49	$	5.55
WEIGHTED-AVERAGE NUMBER OF SHARES OUTSTANDING
BASIC	141,485		140,917		141,356		141,453
DILUTED	142,122		142,011		142,044		142,601

See accompanying Notes to Consolidated Financial Statements.

6

EAST WEST BANCORP, INC. AND SUBSIDIARIES

CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME (LOSS)

($ in thousands)

(Unaudited)

	Three Months Ended September 30,				Nine Months Ended September 30,
	2023		2022		2023		2022
Net income	$	287,738	$	295,339	$	922,208	$	791,320
Other comprehensive loss, net of tax:
Net changes in unrealized losses on AFS debt securities	(72,691)		(161,445)		(64,990)		(523,593)
Reclassification of unrealized losses on debt securities transferred from AFS to HTM	—		—		—		(112,991)
Amortization of unrealized losses on debt securities transferred from AFS to HTM	2,870		3,256		8,448		9,317
Net changes in unrealized losses on cash flow hedges	(27,334)		(33,269)		(52,608)		(64,372)
Foreign currency translation adjustments	3,710		(7,926)		(598)		(18,012)
Other comprehensive loss	(93,445)		(199,384)		(109,748)		(709,651)
COMPREHENSIVE INCOME	$	194,293	$	95,955	$	812,460	$	81,669

See accompanying Notes to Consolidated Financial Statements.

7

EAST WEST BANCORP, INC. AND SUBSIDIARIES

CONSOLIDATED STATEMENT OF CHANGES IN STOCKHOLDERS’ EQUITY

($ in thousands, except shares and per share data)

(Unaudited)

	Common Stock and Additional Paid-in Capital			Retained Earnings		Treasury Stock		AOCI, Net of Tax		Total Stockholders’ Equity
	Shares	Amount
BALANCE, JULY 1, 2022	140,917,389	$	1,914,232	$	5,064,650	$	(768,752)	$	(600,648)	$	5,609,482
Net income	—	—		295,339		—		—		295,339
Other comprehensive loss	—	—		—		—		(199,384)		(199,384)
Issuance of common stock pursuant to various stock compensation plans and agreements	206	12,329		—		—		—		12,329
Repurchase of common stock pursuant to various stock compensation plans and agreements	(83)	—		—		(6)		—		(6)
Cash dividends on common stock ($0.40 per share)	—	—		(57,092)		—		—		(57,092)
BALANCE, SEPTEMBER 30, 2022	140,917,512	$	1,926,561	$	5,302,897	$	(768,758)	$	(800,032)	$	5,660,668
BALANCE, JULY 1, 2023	141,483,668	$	1,959,784	$	6,075,735	$	(791,890)	$	(781,932)	$	6,461,697
Net income	—	—		287,738		—		—		287,738
Other comprehensive loss	—	—		—		—		(93,445)		(93,445)
Issuance of common stock pursuant to various stock compensation plans and agreements	5,682	9,624		—		—		—		9,624
Repurchase of common stock pursuant to various stock compensation plans and agreements	(3,401)	—		—		(186)		—		(186)
Cash dividends on common stock ($0.48 per share)	—	—		(68,722)		—		—		(68,722)
BALANCE, SEPTEMBER 30, 2023	141,485,949	$	1,969,408	$	6,294,751	$	(792,076)	$	(875,377)	$	6,596,706

	Common Stock and Additional Paid-in Capital			Retained Earnings		Treasury Stock		AOCI, Net of Tax		Total Stockholders’ Equity
	Shares	Amount
BALANCE, JANUARY 1, 2022	141,907,954	$	1,893,725	$	4,683,659	$	(649,785)	$	(90,381)	$	5,837,218
Net income	—	—		791,320		—		—		791,320
Other comprehensive loss	—	—		—		—		(709,651)		(709,651)
Issuance of common stock pursuant to various stock compensation plans and agreements	640,053	32,836		—		—		—		32,836
Repurchase of common stock pursuant to various stock compensation plans and agreements	(244,978)	—		—		(18,983)		—		(18,983)
Repurchase of common stock pursuant to the stock repurchase program	(1,385,517)	—		—		(99,990)		—		(99,990)
Cash dividends on common stock ($1.20 per share)	—	—		(172,082)		—		—		(172,082)
BALANCE, SEPTEMBER 30, 2022	140,917,512	$	1,926,561	$	5,302,897	$	(768,758)	$	(800,032)	$	5,660,668
BALANCE, JANUARY 1, 2023	140,947,846	$	1,936,557	$	5,582,546	$	(768,862)	$	(765,629)	$	5,984,612
Cumulative-effect of a change in accounting principle (1)	—	—		(4,262)		—		—		(4,262)
Net income	—	—		922,208		—		—		922,208
Other comprehensive loss	—	—		—		—		(109,748)		(109,748)
Issuance of common stock pursuant to various stock compensation plans and agreements	857,501	32,851		—		—		—		32,851
Repurchase of common stock pursuant to various stock compensation plans and agreements	(319,398)	—		—		(23,214)		—		(23,214)
Cash dividends on common stock ($1.44 per share)	—	—		(205,741)		—		—		(205,741)
BALANCE, SEPTEMBER 30, 2023	141,485,949	$	1,969,408	$	6,294,751	$	(792,076)	$	(875,377)	$	6,596,706

(1)Represents the change in the Company’s allowance for loan losses as a result of the adoption of Accounting Standards Update (“ASU”) 2022-02, Financial Instruments - Credit Losses (Topic 326): Troubled Debt Restructurings and the Vintage Disclosures on January 1, 2023. Refer to Note 2 — Current Accounting Developments and Summary of Significant Accounting Policies in this Form 10-Q for additional information.

See accompanying Notes to Consolidated Financial Statements.

8

EAST WEST BANCORP, INC. AND SUBSIDIARIES

CONSOLIDATED STATEMENT OF CASH FLOWS

($ in thousands)

(Unaudited)

	Nine Months Ended September 30,
	2023		2022
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$	922,208	$	791,320
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	174,856		81,980
Amortization of premiums and accretion of discount, net	(15,740)		26,336
Stock compensation costs	29,934		29,338
Deferred income tax expense (benefit)	1,083		(6,107)
Provision for credit losses	88,000		48,500
Net losses (gains) on sales of loans	41		(5,968)
Net losses (gains) on AFS debt securities	10,000		(1,306)
Loans held-for-sale:
Originations and purchases	—		(447)
Proceeds from sales and paydowns/payoffs of loans originally classified as held-for-sale	—		461
Proceeds from distributions received from equity method investees	3,727		5,642
Net change in accrued interest receivable and other assets	(361,324)		56,958
Net change in accrued expenses and other liabilities	11,641		584,655
Other operating activities, net	(1,204)		5,057
Total adjustments	(58,986)		825,099
Net cash provided by operating activities	863,222		1,616,419
CASH FLOWS FROM INVESTING ACTIVITIES
Net change in:
Investments in qualified affordable housing partnerships, tax credit and other investments	(154,309)		(91,710)
Interest-bearing deposits with banks	121,730		105,479
Resale agreements:
Proceeds from paydowns and maturities	219,917		1,719,076
Purchases	(212,725)		(258,559)
AFS debt securities:
Proceeds from sales	—		129,181
Proceeds from repayments, maturities and redemptions	877,377		711,950
Purchases	(1,011,326)		(769,007)
HTM debt securities:
Proceeds from repayments, maturities and redemptions	49,649		60,140
Purchases	—		(50,000)
Loans held-for-investment:
Proceeds from sales of loans originally classified as held-for-investment	528,056		453,315
Purchases	(433,228)		(599,660)
Other changes in loans held-for-investment, net	(2,794,119)		(5,675,012)
Proceeds from distributions received from equity method investees	16,614		13,557
Other investing activities, net	(105,258)		920
Net cash used in investing activities	(2,897,622)		(4,250,330)

See accompanying Notes to Consolidated Financial Statements.

9

EAST WEST BANCORP, INC. AND SUBSIDIARIES

CONSOLIDATED STATEMENT OF CASH FLOWS

($ in thousands)

(Unaudited)

(Continued)

	Nine Months Ended September 30,
	2023		2022
CASH FLOWS FROM FINANCING ACTIVITIES
Net change in deposits	(840,367)		623,025
Net change in short-term borrowings	4,500,017		200,006
FHLB advances:
Proceeds	6,000,000		4,600,200
Repayment	(6,000,000)		(4,525,200)
Repurchase agreements:
Proceeds from repurchase agreements	—		311,785
Repayment of repurchase agreements	(300,000)		—
Repurchase agreements’ extinguishment cost	(3,872)		—
Long-term debt and lease liabilities:
Repayment of long-term debt and lease liabilities	(637)		(710)
Common stock:
Repurchase of common stocks pursuant to the Stock Repurchase Program	—		(99,990)
Proceeds from issuance pursuant to various stock compensation plans and agreements	1,563		1,444
Stock tendered for payment of withholding taxes	(23,214)		(18,983)
Cash dividends paid	(206,848)		(171,991)
Net cash provided by financing activities	3,126,642		919,586
Effect of exchange rate changes on cash and cash equivalents	(12,848)		(35,257)
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	1,079,394		(1,749,582)
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	3,481,784		3,912,935
CASH AND CASH EQUIVALENTS, END OF PERIOD	$	4,561,178	$	2,163,353
SUPPLEMENTAL CASH FLOW INFORMATION
Cash paid during the period for:
Interest	$	852,315	$	107,146
Income taxes, net	$	284,347	$	233,082
Noncash investing and financing activities:
Securities transferred from AFS to HTM debt securities	$	—	$	3,010,003
Loans transferred from held-for-investment to held-for-sale	$	507,215	$	463,769

See accompanying Notes to Consolidated Financial Statements.

10

EAST WEST BANCORP, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

Note 1 — Basis of Presentation

East West Bancorp, Inc. is a registered bank holding company that offers a full range of banking services to individuals and businesses through its subsidiary bank, East West Bank and its subsidiaries (“East West Bank” or the “Bank”). The unaudited interim Consolidated Financial Statements in this Form 10-Q include the accounts of East West, East West Bank and East West’s subsidiaries. Intercompany transactions and accounts have been eliminated in consolidation. As of September 30, 2023, East West also has six wholly-owned subsidiaries that are statutory business trusts (the “Trusts”). In accordance with FASB Accounting Standards Codification (“ASC”) Topic 810, Consolidation, the Trusts are not included on the Consolidated Financial Statements.

The unaudited interim Consolidated Financial Statements are presented in accordance with U.S. Generally Accepted Accounting Principles (“GAAP”), applicable guidelines prescribed by regulatory authorities and general practices in the banking industry. While the unaudited interim Consolidated Financial Statements reflect all adjustments that, in the opinion of management, are necessary for fair presentation, they primarily serve to update the most recently filed annual report on Form 10-K, and may not include all the information and notes necessary to constitute a complete set of financial statements. Accordingly, they should be read in conjunction with the audited Consolidated Financial Statements and notes thereto included in the Company’s 2022 Form 10-K.

The preparation of the Consolidated Financial Statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities as of the date of the Consolidated Financial Statements, income and expenses during the reporting periods, and the related disclosures. Although our estimates consider current conditions and how we expect them to change in the future, it is reasonably possible that actual results could be materially different from those estimates. Hence, the current period’s results of operations are not necessarily indicative of results that may be expected for any future interim period or for the year as a whole. Events subsequent to the Consolidated Balance Sheet date have been evaluated through the date the Consolidated Financial Statements are issued for inclusion in the accompanying Consolidated Financial Statements.

Risk and Uncertainties

The failures of Silicon Valley Bank, Signature Bank and First Republic Bank earlier in the year have resulted in significant disruption in the financial services industry, which has adversely impacted the volatility and market prices of the securities of financial institutions. In addition, these bank failures have caused concern and uncertainty regarding the liquidity of the banking sector as a whole and resulted in some regional bank customers choosing to maintain deposits with larger financial institutions. Further, competition for deposits has increased in recent periods, and the cost of funding has similarly increased, putting pressure on our net interest margin. These events have adversely impacted, and could continue to adversely affect, our business, results of operations, and financial condition, as well as the market price and volatility of our common stock.

11

Note 2 — Current Accounting Developments and Summary of Significant Accounting Policies

Accounting Pronouncements Adopted in 2023

Standard	Required Date of Adoption	Description	Effect on Financial Statements
ASU 2022-02, Financial Instruments —Credit Losses (Topic 326): Troubled Debt Restructurings and the Vintage Disclosures	January 1, 2023 Early adoption is permitted	ASU 2022-02 eliminates the •accounting guidance for troubled debt restructurings (“TDR”), and requires the Company to apply the loan refinancing and restructuring guidance to determine whether a modification made to a loan results in a new loan or a continuation of an existing loan; and •requirement to use a discounted cash flow method to measure receivables. The guidance also requires •enhanced disclosures for certain loan refinancings and restructurings by creditors when the borrower is experiencing financial difficulty; and •vintage disclosures of current period gross charge-offs (on a current year-to-date basis) by year of loan origination for financing receivables and net investments in leases within the scope of ASC 326-20: Financial Instruments — Credit Losses — Measured at Amortized Cost.	The Company adopted ASU 2022-02 on January 1, 2023 on a prospective basis, except for the guidance related to the elimination of TDR recognition and measurement, which was adopted on a modified retrospective approach. This adoption increased the allowance for loan losses on TDRs as of December 31, 2022 by $6.0 million and decreased opening retained earnings on January 1, 2023 by $4.3 million after-tax. Disclosures as of September 30, 2023 are presented in accordance with this guidance while prior year amounts are reported in accordance with previously applicable GAAP.

12

Recent Accounting Pronouncements Yet to be Adopted

Standard	Required Date of Adoption	Description	Effect on Financial Statements
Standards Not Yet Adopted
ASU 2023-01, Leases (Topic 842): Common Control Arrangements	January 1, 2024 Early adoption is permitted	ASU 2023-01 amends the accounting for leasehold improvements for leases between entities under common control arrangements. The guidance requires leasehold improvements associated with leases between companies under common control to be amortized by a lessee over the economic life of the leasehold improvements, regardless of the lease term or, until the lessee ceases to control the use of the underlying asset through a lease, at which time the remaining value of the leasehold improvement would be accounted for as a transfer between companies under common control through an adjustment to equity. The amendments in this guidance may be applied retrospectively to the beginning of the period in which the entity first applied Topic 842 or prospectively (1) to all new leasehold improvements recognized on or after the date the entity first applies the amendments, or (2) to all new and existing leasehold improvements recognized on or after the date the entity first applies the amendments.	The Company does not expect the adoption of this guidance to have a material impact on the Company’s Consolidated Financial Statements. The Company expects to adopt ASU 2023-01 on January 1, 2024 on a prospective basis.
ASU 2023-02, Investments — Equity Method and Joint Ventures (Topic 323): Accounting for Investments in Tax Credit Structures Using the Proportional Amortization Method	January 1, 2024 Early adoption is permitted	ASU 2023-02 expands the scope of the proportional amortization method to equity tax credit investment programs if certain conditions are met. Previously, the proportional amortization method could only be used for investments in low-income housing tax credit structures. Under this guidance, companies are able to elect, on a tax credit program-by-tax credit program basis, to apply the proportional amortization method to all equity investments meeting the criteria in ASC 323-740-25-1. The amendments in this guidance must be applied on a modified retrospective or a retrospective basis.	The Company is currently evaluating the impact of this guidance on the Company’s Consolidated Financial Statements.
ASU 2023-05, Business Combinations — Joint Venture Formations (Subtopic 805-60): Recognition and Initial Measurement	January 1, 2025 Early adoption is permitted	ASU 2023-05 requires a joint venture to recognize and initially measure assets contributed to the joint venture in a formation transaction to be measured at fair value. Under this guidance, the initial formation of the joint venture would trigger a new basis of accounting and recognize contributed net assets generally at fair value as of the joint venture’s formation date. The excess of the fair value of the joint venture’s outstanding equity interests over the fair value of its identifiable assets and liabilities is recognized as goodwill, regardless of whether the joint venture meets the definition of a business in its stand-alone financial statements, and measure its contributed total net assets upon formation as the fair value of the joint venture as a whole, which would equal the fair value of 100% of the joint venture’s outstanding equity interests. The guidance also allows a joint venture to apply the measurement period guidance, which is largely consistent with the acquisition method for business combination in ASC 805-10. The guidance also introduces new disclosure requirements related to the nature and financial effect of the joint venture. The amendments in this guidance are effective prospectively for all joint venture formations with a formation date on or after January 1, 2025. Additionally, joint ventures that were formed before January 1, 2025 may elect to apply the amendments retrospectively if sufficient information exists.	The Company does not expect the adoption of this guidance to have a material impact on the Company’s Consolidated Financial Statements. The Company expects to adopt ASU 2023-05 on January 1, 2025.

13

Significant Accounting Policies Update

Loan Modifications — Certain loans are modified in the normal course of business for competitive reasons or in conjunction with the Company’s loss mitigation activities. Upon the adoption of ASU 2022-02, the Company applies the general loan modification guidance provided in ASC 310-20 to all loan modifications, including modifications made to borrowers experiencing financial difficulty. Under the general loan modification guidance, a modification is treated as a new loan only if the following two conditions are met: (1) the terms of the new loan are at least as favorable to the Company as the terms for comparable loans to other customers with similar collection risks; and (2) modifications to the terms of the original loan are more than minor. If either condition is not met, the modification is accounted for as a continuation of the existing loan with any effect of the modification treated as a prospective adjustment to the loan’s effective interest rate. A modification made to borrowers experiencing financial difficulty may vary by program and by borrower-specific characteristics, and may include rate reductions, principal forgiveness, term extensions, and payment delays, and is intended to minimize the Company’s economic loss and to avoid foreclosure or repossession of collateral. The Company applies the same credit loss methodology it uses for similar loans that were not modified. For the Company’s accounting policy related to the loan modifications’ allowance for loan losses, see Note 7 — Loans Receivable and Allowance for Credit Losses — Allowance for Credit Losses to the Consolidated Financial Statements in this Form 10-Q.

Note 3 — Fair Value Measurement and Fair Value of Financial Instruments

Under applicable accounting standards, the Company measures a portion of its assets and liabilities at fair value. These assets and liabilities are predominantly recorded at fair value on a recurring basis. From time to time, certain assets and liabilities are measured at fair value on a nonrecurring basis; that is, they are subject to fair value adjustments only as required through the application of an accounting method such as lower of cost or fair value or write-down of individual assets. The Company categorizes its assets and liabilities into three levels based on the established fair value hierarchy and conducts a review of fair value hierarchy classifications on a quarterly basis. For more information regarding the fair value hierarchy and how the Company measures fair value, see Note 1 — Summary of Significant Accounting Policies — Significant Accounting Policies — Fair Value to the Consolidated Financial Statements in the Company’s 2022 Form 10-K.

Assets and Liabilities Measured at Fair Value on a Recurring Basis

The following section describes the valuation methodologies used by the Company to measure financial assets and liabilities on a recurring basis, as well as the general classification of these instruments within the fair value hierarchy.

Available-for-Sale Debt Securities — The fair value of AFS debt securities is generally determined by independent external pricing service providers who have experience in valuing these securities or by taking the average quoted market prices obtained from independent external brokers. The valuations provided by the third-party pricing service providers are based on observable market inputs, which include benchmark yields, reported trades, issuer spreads, benchmark securities, bids, offers, prepayment expectations and reference data obtained from market research publications. Inputs used by the third-party pricing service providers in valuing collateralized mortgage obligations and other securitization structures also include newly issued data, monthly payment information, whole loan collateral performance, tranche evaluation and “To Be Announced” prices. In valuing securities issued by state and political subdivisions, inputs used by third-party pricing service providers also include material event notices.

On a monthly basis, the Company validates the valuations provided by third-party pricing service providers to ensure that the fair value determination is consistent with the applicable accounting guidance and the financial instruments are properly classified in the fair value hierarchy. To perform this validation, the Company evaluates the fair values of securities by comparing the fair values provided by the third-party pricing service providers to prices from other available independent sources for the same securities. When significant variances in prices are identified, the Company further compares inputs used by different sources to ascertain the reliability of these sources. On a quarterly basis, the Company reviews the valuation inputs and methodology furnished by third-party pricing service providers for each security category.

14

When a quoted price in an active market exists for the identical security, this price is used to determine the fair value and the AFS debt security is classified as Level 1. Level 1 AFS debt securities consist of U.S. Treasury securities. When pricing is unavailable from third-party pricing service providers for certain securities, the Company requests market quotes from various independent external brokers and utilizes the average quoted market prices. In addition, the Company obtains market quotes from other official published sources. As these valuations are based on observable inputs in the current marketplace, they are classified as Level 2. The Company periodically communicates with the independent external brokers to validate their pricing methodology. Information such as pricing sources, pricing assumptions, data inputs and valuation techniques are reviewed periodically.

Equity Securities — Equity securities consisted of mutual funds as of both September 30, 2023 and December 31, 2022. The Company invested in these mutual funds for Community Reinvestment Act (“CRA”) purposes. The Company uses net asset value (“NAV”) information to determine the fair value of these equity securities. When NAV is available periodically and the equity securities can be put back to the transfer agents at the publicly available NAV, the fair value of the equity securities is classified as Level 1. When NAV is available periodically, but the equity securities may not be readily marketable at its periodic NAV in the secondary market, the fair value of these equity securities is classified as Level 2.

Interest Rate Contracts — Interest rate contracts consist of interest rate swaps and options. The fair value of the interest rate swaps is determined using the market standard methodology of netting the discounted future fixed cash payments (or receipts) and the discounted expected variable cash receipts (or payments). The fair value of the interest rate options, which consist of floors and caps, is determined using the market standard methodology of discounting the future expected cash receipts that would occur if variable interest rates fall below (rise above) the strike rate of the floors (caps). In addition, to comply with the provisions of ASC 820, Fair Value Measurement, the Company incorporates credit valuation adjustments to appropriately reflect both its own and the respective counterparty’s nonperformance risk in the fair value measurements of its derivatives. The credit valuation adjustments associated with the Company’s derivatives utilize model-derived credit spreads, which are Level 3 inputs. Considering the observable nature of all other significant inputs utilized, the Company classifies these derivative instruments as Level 2.

Foreign Exchange Contracts — The fair value of foreign exchange contracts is determined at each reporting period based on changes in the foreign exchange rates. These are over-the-counter contracts where quoted market prices are not readily available. Valuation is measured using conventional valuation methodologies with observable market data. Due to the short-term nature of the majority of these contracts, the counterparties’ credit risks are considered nominal and result in no adjustments to the valuation of the foreign exchange contracts. Due to the observable nature of the inputs used in deriving the fair value of these contracts, the valuation of foreign exchange contracts is classified as Level 2. As of both September 30, 2023 and December 31, 2022, the Bank held foreign currency non-deliverable forward contracts to hedge its net investment in its China subsidiary, East West Bank (China) Limited, a non-U.S. dollar (“USD”) functional currency subsidiary in China. These foreign currency non-deliverable forward contracts were designated as net investment hedges. The fair value of foreign currency non-deliverable forward contracts is determined by comparing the contracted foreign exchange rate to the current market foreign exchange rate. Key inputs of the current market exchange rate include the spot and forward rates of the contractual currencies. Foreign exchange forward curves are used to determine which forward rate pertains to a specific maturity. Due to the observable nature of the inputs used in deriving the estimated fair value, these instruments are classified as Level 2.

Credit Contracts — Credit contracts utilized by the Company are comprised of credit risk participation agreements (“RPAs”) entered into by the Company with institutional counterparties. The fair value of the RPAs is calculated by determining the total expected asset or liability exposure of the derivatives to the borrowers and applying the borrowers’ credit spread to that exposure. Total expected exposure incorporates both the current and potential future exposure of the derivatives, derived from using observable inputs, such as yield curves and volatilities. Due to the observable nature of all other significant inputs used in deriving the estimated fair value, credit contracts are classified as Level 2.

15

Equity Contracts — Equity contracts consist of warrants to purchase common or preferred stock of public and private companies, and any liability-classified contingent issuable shares of the Company. The fair value of the warrants is based on the Black-Scholes option pricing model. For warrants from public companies, the model uses the underlying stock price, stated strike price, warrant expiration date, risk-free interest rate based on a duration-matched U.S. Treasury rate, and market-observable company-specific equity volatility as inputs to value the warrants. Due to the observable nature of the inputs used in deriving the estimated fair value, warrants from public companies are classified as Level 2. For warrants from private companies, the model uses inputs such as the offering price observed in the most recent round of funding, stated strike price, warrant expiration date, risk-free interest rate based on duration-matched U.S. Treasury rate and option volatility. The Company applies proxy volatilities based on the industry sectors of the private companies. The model values are then adjusted for a general lack of liquidity due to the private nature of the underlying companies. Since both option volatility and liquidity discount assumptions are subject to management’s judgment, measurement uncertainty is inherent in the valuation of private company warrants. Due to the unobservable nature of the option volatility and liquidity discount assumptions used in deriving the estimated fair value, warrants from private companies are classified as Level 3. On a quarterly basis, the changes in the fair value of warrants from private companies are reviewed for reasonableness, and a measurement of uncertainty analysis on the option volatility and liquidity discount assumptions is performed.

In connection with the Company’s acquisition of a 49.99% equity interest in Rayliant Global Advisors Limited (“Rayliant”) during the third quarter of 2023, the Company granted performance restricted stock units (“PRSUs”) as part of its consideration. The vesting of these equity contracts is contingent on Rayliant meeting certain financial performance targets, and they are accounted for as a derivative liability. The fair value of these liability-classified equity contracts varies based on the operating revenue and operating EBITDA of Rayliant to be achieved during the future performance period. Due to the unobservable nature of the input assumptions, these equity contracts are classified as Level 3. For additional information on the equity contracts, refer to Note 6 — Derivatives and Note 8 — Investments in Qualified Affordable Housing Partnerships, Tax Credit and Other Investments, Net and Variable Interest Entities to the Consolidated Financial Statements in this Form 10-Q.

Commodity Contracts — Commodity contracts consist of swaps and options referencing commodity products. The fair value of the commodity option contracts is determined using the Black-Scholes model and assumptions that include expectations of future commodity price and volatility. The future commodity contract price is derived from observable inputs such as the market price of the commodity. Commodity swaps are structured as an exchange of fixed cash flows for floating cash flows. The fair value of the commodity swaps is determined using the market standard methodology of netting the discounted future fixed cash payments (or receipts) and the discounted expected variable cash receipts (or payments) based on the market prices of the commodity. The fixed cash flows are predetermined based on the known volumes and fixed price as specified in the swap agreement. The floating cash flows are correlated with the change of forward commodity prices, which is derived from market corroborated futures settlement prices. As a result, the Company classifies these derivative instruments as Level 2 due to the observable nature of the significant inputs utilized.

16

The following tables present financial assets and liabilities that are measured at fair value on a recurring basis as of September 30, 2023 and December 31, 2022:

	Assets and Liabilities Measured at Fair Value on a Recurring Basis as of September 30, 2023
($ in thousands)	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total Fair Value
AFS debt securities:
U.S. Treasury securities	$	904,101	$	—	$	—	$	904,101
U.S. government agency and U.S. government-sponsored enterprise debt securities	—		447,464		—		447,464
U.S. government agency and U.S. government-sponsored enterprise mortgage-backed securities:
Commercial mortgage-backed securities	—		462,332		—		462,332
Residential mortgage-backed securities	—		1,694,342		—		1,694,342
Municipal securities	—		243,556		—		243,556
Non-agency mortgage-backed securities:
Commercial mortgage-backed securities	—		365,320		—		365,320
Residential mortgage-backed securities	—		570,787		—		570,787
Corporate debt securities	—		475,434		—		475,434
Foreign government bonds	—		222,790		—		222,790
Asset-backed securities	—		43,757		—		43,757
Collateralized loan obligations (“CLOs”)	—		609,954		—		609,954
Total AFS debt securities	$	904,101	$	5,135,736	$	—	$	6,039,837
Investments in qualified affordable housing partnerships, tax credit and other investments, net:
Equity securities	$	19,447	$	4,154	$	—	$	23,601
Total investments in qualified affordable housing partnerships, tax credit and other investments, net	$	19,447	$	4,154	$	—	$	23,601
Derivative assets:
Interest rate contracts	$	—	$	624,087	$	—	$	624,087
Foreign exchange contracts	—		100,377		—		100,377
Equity contracts	—		—		352		352
Commodity contracts	—		137,500		—		137,500
Gross derivative assets	$	—	$	861,964	$	352	$	862,316
Netting adjustments (1)	$	—	$	(530,331)	$	—	$	(530,331)
Net derivative assets	$	—	$	331,633	$	352	$	331,985
Derivative liabilities:
Interest rate contracts	$	—	$	712,302	$	—	$	712,302
Foreign exchange contracts	—		77,099		—		77,099
Equity contracts (2)	—		—		15,119		15,119
Credit contracts	—		12		—		12
Commodity contracts	—		143,855		—		143,855
Gross derivative liabilities	$	—	$	933,268	$	15,119	$	948,387
Netting adjustments (1)	$	—	$	(262,873)	$	—	$	(262,873)
Net derivative liabilities	$	—	$	670,395	$	15,119	$	685,514

17

	Assets and Liabilities Measured at Fair Value on a Recurring Basis as of December 31, 2022
($ in thousands)	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total Fair Value
AFS debt securities:
U.S. Treasury securities	$	606,203	$	—	$	—	$	606,203
U.S. government agency and U.S. government-sponsored enterprise debt securities	—		461,607		—		461,607
U.S. government agency and U.S. government-sponsored enterprise mortgage-backed securities:
Commercial mortgage-backed securities	—		500,269		—		500,269
Residential mortgage-backed securities	—		1,762,195		—		1,762,195
Municipal securities	—		257,099		—		257,099
Non-agency mortgage-backed securities:
Commercial mortgage-backed securities	—		398,329		—		398,329
Residential mortgage-backed securities	—		649,224		—		649,224
Corporate debt securities	—		526,274		—		526,274
Foreign government bonds	—		227,053		—		227,053
Asset-backed securities	—		49,076		—		49,076
CLOs	—		597,664		—		597,664
Total AFS debt securities	$	606,203	$	5,428,790	$	—	$	6,034,993
Investments in qualified affordable housing partnerships, tax credit and other investments, net:
Equity securities	$	19,777	$	4,177	$	—	$	23,954
Total investments in qualified affordable housing partnerships, tax credit and other investments, net	$	19,777	$	4,177	$	—	$	23,954
Derivative assets:
Interest rate contracts	$	—	$	440,283	$	—	$	440,283
Foreign exchange contracts	—		53,109		—		53,109
Equity contracts	—		—		323		323
Commodity contracts	—		261,613		—		261,613
Gross derivative assets	$	—	$	755,005	$	323	$	755,328
Netting adjustments (1)	$	—	$	(614,783)	$	—	$	(614,783)
Net derivative assets	$	—	$	140,222	$	323	$	140,545
Derivative liabilities:
Interest rate contracts	$	—	$	584,516	$	—	$	584,516
Foreign exchange contracts	—		44,117		—		44,117
Credit contracts	—		23		—		23
Commodity contracts	—		258,608		—		258,608
Gross derivative liabilities	$	—	$	887,264	$	—	$	887,264
Netting adjustments (1)	$	—	$	(242,745)	$	—	$	(242,745)
Net derivative liabilities	$	—	$	644,519	$	—	$	644,519

(1)Represents balance sheet netting of derivative assets and liabilities and related cash collateral under master netting agreements or similar agreements. See Note 6 — Derivatives to the Consolidated Financial Statements in this Form 10-Q for additional information.

(2)Equity contracts classified as derivative liabilities consist of PRSUs granted as part of EWBC’s consideration in its investment in Rayliant.

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For the three and nine months ended September 30, 2023 and 2022, Level 3 fair value measurements that were measured on a recurring basis consisted of warrant equity contracts issued by private companies and liability-classified contingent issuable shares of the Company. The following table provides a reconciliation of the beginning and ending balances of these equity contracts for the three and nine months ended September 30, 2023 and 2022:

	Three Months Ended September 30,				Nine Months Ended September 30,
($ in thousands)	2023		2022		2023		2022
Derivative assets:
Equity contracts
Beginning balance	$	263	$	357	$	323	$	215
Total (losses) gains included in earnings (1)	(3)		(12)		(63)		39
Issuances	92		—		92		91
Ending balance	$	352	$	345	$	352	$	345
Derivative liabilities:
Equity contracts (2)
Beginning balance	$	—	$	—	$	—	$	—
Issuances	15,119		—		15,119		—
Ending balance	$	15,119	$	—	$	15,119	$	—

(1)Includes unrealized (losses) gains recorded in Lending fees on the Consolidated Statement of Income.

(2)Equity contracts classified as derivative liabilities consist of PRSUs granted as part of EWBC’s consideration in its investment in Rayliant.

The following table presents quantitative information about the significant unobservable inputs used in the valuation of Level 3 fair value measurements as of September 30, 2023 and December 31, 2022. The significant unobservable inputs presented in the table below are those that the Company considers significant to the fair value of the Level 3 assets. The Company considers unobservable inputs to be significant if, by their exclusion, the fair value of the Level 3 assets would be impacted by a predetermined percentage change.

($ in thousands)	Fair Value Measurements (Level 3)		Valuation Technique	Unobservable Inputs	Range of Inputs	Weighted-Average of Inputs
September 30, 2023
Derivative assets:
Equity contracts	$	352	Black-Scholes option pricing model	Equity volatility	41% — 51%	46	%	(1)
				Liquidity discount	47%	47	%
Derivative liabilities:
Equity contracts (2)	$	15,119	Internal model	Payout % designated based on operating revenue and operating EBITDA of investee	84%	84	%
December 31, 2022
Derivative assets:
Equity contracts	$	323	Black-Scholes option pricing model	Equity volatility	42% — 60%	54	%	(1)
				Liquidity discount	47%	47	%

(1)The calculation for the weighted-average of inputs for the derivative asset equity contracts is based on the fair value of equity contracts as of both September 30, 2023 and December 31, 2022.

(2)Equity contracts classified as derivative liabilities consist of PRSUs granted as part of EWBC’s consideration in its investment in Rayliant.

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Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis

Assets measured at fair value on a nonrecurring basis include certain individually evaluated loans held-for-investment, investments in qualified affordable housing partnerships, tax credit and other investments, other real estate owned (“OREO”), loans held-for-sale, and other nonperforming assets. Nonrecurring fair value adjustments result from the impairment on certain individually evaluated loans held-for-investment and investments in qualified affordable housing partnerships, tax credit and other investments, from write-downs of OREO and other nonperforming assets, or from the application of lower of cost or fair value on loans held-for-sale.

Individually Evaluated Loans Held-for-Investment — Individually evaluated loans held-for-investment are classified as Level 3 assets. The following two methods are used to derive the fair value of individually evaluated loans held-for-investment:

•Discounted cash flow valuation techniques that consist of developing an expected stream of cash flows over the life of the loans, and then calculating the present value of the loans by discounting the expected cash flows at a designated discount rate.

•When the repayment of an individually evaluated loan is dependent on the sale of the collateral, the fair value of the loan is determined based on the fair value of the underlying collateral, which may take the form of real estate, inventory, equipment, contracts or guarantees. The fair value of the underlying collateral is generally based on third-party appraisals, or an internal valuation if a third-party appraisal is not required by regulations, or is unavailable. An internal valuation utilizes one or more valuation techniques such as the income, market and/or cost approaches.

Investments in Qualified Affordable Housing Partnerships, Tax Credit and Other Investments, Net — The Company conducts due diligence on its investments in qualified affordable housing partnerships, tax credit and other investments prior to the initial investment date and through the placed-in-service date. After these investments are either acquired or placed into service, the Company continues its periodic monitoring process to ensure book values are realizable and that there is no significant tax credit recapture risk. This monitoring process includes reviewing the investment entity’s quarterly financial statements and annual tax returns, the annual financial statements of the guarantor (if any) and a comparison of the actual performance of the investment against the financial projections prepared at the time the investment was made. The Company assesses its tax credit and other investments for possible other-than-temporary impairment on an annual basis or when events or circumstances suggest that the carrying amount of the investments may not be realizable. These circumstances can include, but are not limited to the following factors:

•expected future cash flows that are less than the carrying amount of the investment;

•changes in the economic, market or technological environment that could adversely affect the investee’s operations;

•the potential for tax credit recapture; and

•other factors that raise doubt about the investee’s ability to continue as a going concern, such as negative cash flows from operations and the continuing prospects of the underlying operations of the investment.

All available information is considered in assessing whether a decline in value is other-than-temporary. Generally, none of the aforementioned factors are individually conclusive and the relative importance placed on individual facts may vary depending on the situation. In accordance with ASC 323-10-35-32, Investments — Equity Method and Joint Ventures, an impairment charge would only be recognized in earnings for a decline in value that is determined to be other-than-temporary.

Other Real Estate Owned — The Company’s OREO represents properties acquired through foreclosure, or through full or partial satisfaction of loans held-for-investment. These OREO properties are recorded at estimated fair value less the costs to sell at the time of foreclosure or at the lower of cost or estimated fair value less the costs to sell subsequent to acquisition. On a monthly basis, the current fair market value of each OREO property is reviewed to ensure that the current carrying value is appropriate. OREO properties are classified as Level 3.

Loans Held-for-Sale — Loans held-for-investment subsequently transferred to held-for-sale are recorded at the lower of cost or fair value upon transfer. Loans held-for-sale may be measured at fair value on a nonrecurring basis when fair value is less than cost. Fair value is generally determined based on available market data for similar loans and therefore, are classified as Level 2.

20

Other Nonperforming Assets — Other nonperforming assets are recorded at fair value upon transfer from loans to foreclosed assets. Subsequently, foreclosed assets are recorded at the lower of carrying value or fair value. Fair value is based on independent market prices, appraised values of the collateral or management’s estimated recovery of the foreclosed asset. The Company records an impairment when the foreclosed asset’s fair value declines below its carrying value. The fair value measurement of other nonperforming assets is classified within one of the three levels in a valuation hierarchy based upon the observability of inputs to the valuation as of the measurement date.

The following tables present the carrying amounts of assets that were still held and had fair value adjustments measured on a nonrecurring basis as of September 30, 2023 and December 31, 2022:

	Assets Measured at Fair Value on a Nonrecurring Basis as of September 30, 2023
($ in thousands)	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Fair Value Measurements
Loans held-for-investment:
Commercial:
Commercial and industrial (“C&I”)	$	—	$	—	$	22,788	$	22,788
Commercial real estate (“CRE”):
Construction and land	—		—		11,141		11,141
Total commercial	—		—		33,929		33,929
Consumer:
Residential mortgage:
Home equity lines of credit (“HELOCs”)	—		—		1,204		1,204
Total consumer	—		—		1,204		1,204
Total loans held-for-investment	$	—	$	—	$	35,133	$	35,133
Investments in qualified affordable housing partnerships, tax credit and other investments, net	$	—	$	—	$	1,038	$	1,038

	Assets Measured at Fair Value on a Nonrecurring Basis as of December 31, 2022
($ in thousands)	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Fair Value Measurements
Loans held-for-investment:
Commercial:
C&I	$	—	$	—	$	40,011	$	40,011
CRE:
CRE	—		—		31,380		31,380
Total commercial	—		—		71,391		71,391
Consumer:
Residential mortgage:
HELOCs	—		—		1,223		1,223
Total consumer	—		—		1,223		1,223
Total loans held-for-investment	$	—	$	—	$	72,614	$	72,614

21

The following table presents the increase (decrease) in the fair value of certain assets held at the end of the respective reporting periods, for which a nonrecurring fair value adjustment was recognized for the three and nine months ended September 30, 2023 and 2022:

	Three Months Ended September 30,				Nine Months Ended September 30,
($ in thousands)	2023		2022		2023		2022
Loans held-for-investment:
Commercial:
C&I	$	366	$	(15,265)	$	(4,437)	$	(30,011)
CRE:
CRE	—		(118)		—		2,212
Multifamily residential	—		(5,931)		—		(5,939)
Construction and land	(10,413)		—		(10,413)		—
Total commercial	(10,047)		(21,314)		(14,850)		(33,738)
Consumer:
Residential mortgage:
HELOCs	(41)		81		(41)		166
Total consumer	(41)		81		(41)		166
Total loans held-for-investment	$	(10,088)	$	(21,233)	$	(14,891)	$	(33,572)
Investments in qualified affordable housing partnerships, tax credit and other investments, net	$	(790)	$	—	$	(1,577)	$	—
Other nonperforming assets	$	—	$	—	$	—	$	(6,861)

The following table presents the quantitative information about the significant unobservable inputs used in the valuation of Level 3 fair value measurements that are measured on a nonrecurring basis as of September 30, 2023 and December 31, 2022:

($ in thousands)	Fair Value Measurements (Level 3)		Valuation Techniques	Unobservable Inputs	Range of Inputs	Weighted-Average of Inputs (1)
September 30, 2023
Loans held-for-investment	$	13,955	Fair value of collateral	Discount	15% — 75%	48	%	(1)
	$	6,134	Fair value of collateral	Contract value	NM	NM
	$	15,044	Fair value of property	Selling cost	8%	8	%
Investments in qualified affordable housing partnerships, tax credit and other investments, net	$	1,038	Individual analysis of each investment	Expected future tax benefits and distributions	NM	NM
December 31, 2022
Loans held-for-investment	$	23,322	Discounted cash flows	Discount	4% — 6%	4	%	(1)
	$	17,912	Fair value of collateral	Discount	15% — 75%	37	%	(1)
	$	31,380	Fair value of property	Selling cost	8%	8	%

NM — Not meaningful.

(1)The calculation for the weighted-average of inputs is based on the relative fair value of the respective assets as of September 30, 2023 and December 31, 2022.

22

Disclosures about the Fair Value of Financial Instruments

The following tables present the fair value estimates for financial instruments as of September 30, 2023 and December 31, 2022, excluding financial instruments recorded at fair value on a recurring basis as they are included in the tables presented elsewhere in this Note. The carrying amounts in the following tables are recorded on the Consolidated Balance Sheet under the indicated captions, except for accrued interest receivable, restricted equity securities, at cost, and mortgage servicing rights that are included in Other assets, and accrued interest payable which is included in Accrued expenses and other liabilities. These financial instruments are measured on an amortized cost basis on the Company’s Consolidated Balance Sheet.

	September 30, 2023
($ in thousands)	Carrying Amount		Level 1		Level 2		Level 3		Estimated Fair Value
Financial assets:
Cash and cash equivalents	$	4,561,178	$	4,561,178	$	—	$	—	$	4,561,178
Interest-bearing deposits with banks	$	17,213	$	—	$	17,213	$	—	$	17,213
Resale agreements	$	785,000	$	—	$	672,250	$	—	$	672,250
HTM debt securities	$	2,964,235	$	470,618	$	1,837,430	$	—	$	2,308,048
Restricted equity securities, at cost	$	79,522	$	—	$	79,522	$	—	$	79,522
Loans held-for-sale	$	4,762	$	—	$	4,762	$	—	$	4,762
Loans held-for-investment, net	$	50,251,661	$	—	$	—	$	48,992,846	$	48,992,846
Mortgage servicing rights	$	5,208	$	—	$	—	$	9,821	$	9,821
Accrued interest receivable	$	317,881	$	—	$	317,881	$	—	$	317,881
Financial liabilities:
Demand, checking, savings and money market deposits	$	38,435,954	$	—	$	38,435,954	$	—	$	38,435,954
Time deposits	$	16,651,077	$	—	$	16,547,883	$	—	$	16,547,883
Short-term borrowings	$	4,500,000	$	—	$	4,500,000	$	—	$	4,500,000
Long-term debt	$	148,173	$	—	$	144,214	$	—	$	144,214
Accrued interest payable	$	150,890	$	—	$	150,890	$	—	$	150,890

	December 31, 2022
($ in thousands)	Carrying Amount		Level 1		Level 2		Level 3		Estimated Fair Value
Financial assets:
Cash and cash equivalents	$	3,481,784	$	3,481,784	$	—	$	—	$	3,481,784
Interest-bearing deposits with banks	$	139,021	$	—	$	139,021	$	—	$	139,021
Resale agreements	$	792,192	$	—	$	693,656	$	—	$	693,656
HTM debt securities	$	3,001,868	$	471,469	$	1,983,702	$	—	$	2,455,171
Restricted equity securities, at cost	$	78,624	$	—	$	78,624	$	—	$	78,624
Loans held-for-sale	$	25,644	$	—	$	25,644	$	—	$	25,644
Loans held-for-investment, net	$	47,606,785	$	—	$	—	$	46,670,690	$	46,670,690
Mortgage servicing rights	$	6,235	$	—	$	—	$	10,917	$	10,917
Accrued interest receivable	$	263,430	$	—	$	263,430	$	—	$	263,430
Financial liabilities:
Demand, checking, savings and money market deposits	$	42,637,316	$	—	$	42,637,316	$	—	$	42,637,316
Time deposits	$	13,330,533	$	—	$	13,228,777	$	—	$	13,228,777
Repurchase agreements	$	300,000	$	—	$	304,097	$	—	$	304,097
Long-term debt	$	147,950	$	—	$	143,483	$	—	$	143,483
Accrued interest payable	$	37,198	$	—	$	37,198	$	—	$	37,198

23

Note 4 — Assets Purchased under Resale Agreements and Sold under Repurchase Agreements

Assets Purchased under Resale Agreements

The Company’s resale agreements exposes it to credit risk for both the counterparties and the underlying collateral. The Company manages credit exposure from certain transactions by entering into master netting agreements and collateral arrangements with the counterparties. The relevant agreements allow for an efficient closeout of the transaction, liquidation and set-off of collateral against the net amount owed by the counterparty following a default. It is also the Company’s policy to take possession, where possible, of the assets underlying resale agreements. As a result of the Company’s credit risk mitigation practices with respect to resale agreements as described above, the Company did not hold any reserves for credit impairment with respect to these agreements as of both September 30, 2023 and December 31, 2022.

Securities Purchased under Resale Agreements — Total securities purchased under resale agreements were $785.0 million as of September 30, 2023, and $760.0 million as of December 31, 2022. The weighted-average yields were 2.73% and 2.41% for the three months ended September 30, 2023 and 2022, respectively; and 2.55% and 1.96% for the nine months ended September 30, 2023 and 2022, respectively.

Loans Purchased under Resale Agreements — Loans purchased under resale agreements were $32.2 million as of December 31, 2022. During the first half of 2023, all of the loans purchased under resale agreements matured and the Company had no loans purchased under resale agreements as of September 30, 2023. The weighted-average yield was 7.27% for the nine months ended September 30, 2023. In comparison, the weighted-average yields for the three and nine months ended September 30, 2022 were 3.87% and 2.10%, respectively.

Assets Sold under Repurchase Agreements — Gross repurchase agreements were $300.0 million as of December 31, 2022. The Company extinguished $300.0 million of repurchase agreements during the first quarter of 2023. The Company recorded $3.9 million of extinguishment charges during the nine months ended September 30, 2023. In comparison, no extinguishment charges were recorded for the three and nine months ended September 30, 2022. The weighted-average interest rates were 5.51% and 2.81% for the three months ended September 30, 2023 and 2022, respectively; and 4.32% and 2.73% for the nine months ended September 30, 2023 and 2022, respectively. These weighted-average interest rates also reflect the impact of short-term repurchase agreements entered and repaid during the periods presented.

Balance Sheet Offsetting

The Company’s resale and repurchase agreements are transacted under legally enforceable master repurchase agreements that, in the event of default by the counterparty, provide the Company the right to liquidate securities held and to offset receivables and payables with the same counterparty. The Company nets resale and repurchase transactions with the same counterparty on the Consolidated Balance Sheet when it has a legally enforceable master netting agreement and the transactions are eligible for netting under ASC 210-20-45-11, Balance Sheet Offsetting Repurchase and Reverse Repurchase Agreements. Collateral received includes securities and loans that are not recognized on the Consolidated Balance Sheet. Collateral pledged consists of securities that are not netted on the Consolidated Balance Sheet against the related collateralized liability. Securities received or pledged as collateral in resale and repurchase agreements with other financial institutions may also be sold or re-pledged by the secured party, and are usually delivered to and held by the third-party trustees.

24

The following tables present the resale and repurchase agreements included on the Consolidated Balance Sheet as of September 30, 2023 and December 31, 2022:

($ in thousands)	September 30, 2023
	Gross Amounts of Recognized Assets		Gross Amounts Offset on the Consolidated Balance Sheet		Net Amounts of Assets Presented on the Consolidated Balance Sheet		Gross Amounts  Not Offset on the Consolidated  Balance Sheet			Net Amount
Assets							Collateral Received
Resale agreements	$	785,000	$	—	$	785,000	$	(687,327)	(1)	$	97,673
	Gross Amounts of Recognized Liabilities		Gross Amounts Offset on the Consolidated Balance Sheet		Net Amounts of Liabilities Presented on the Consolidated Balance Sheet		Gross Amounts Not Offset on the Consolidated Balance Sheet			Net Amount
Liabilities							Collateral Pledged
Repurchase agreements	$	—	$	—	$	—	$	—		$	—

($ in thousands)	December 31, 2022
	Gross Amounts of Recognized Assets		Gross Amounts Offset on the Consolidated Balance Sheet		Net Amounts of Assets Presented on the Consolidated Balance Sheet		Gross Amounts  Not Offset on the Consolidated  Balance Sheet
Assets										Net Amount
							Collateral Received
Resale agreements	$	792,192	$	—	$	792,192	$	(701,790)	(1)	$	90,402
Liabilities	Gross Amounts of Recognized Liabilities		Gross Amounts Offset on the Consolidated Balance Sheet		Net Amounts of Liabilities Presented on the Consolidated Balance Sheet		Gross Amounts Not Offset on the Consolidated Balance Sheet
										Net Amount
							Collateral Pledged
Repurchase agreements	$	300,000	$	—	$	300,000	$	(300,000)	(2)	$	—

(1)Represents the fair value of assets the Company has received under resale agreements, limited for table presentation purposes to the amount of the recognized asset due from each counterparty. The application of collateral cannot reduce the net position below zero. Therefore, excess collateral, if any, is not reflected above.

(2)Represents the fair value of assets the Company has pledged under repurchase agreements, limited for table presentation purposes to the amount of the recognized liability due to each counterparty. The application of collateral cannot reduce the net position below zero. Therefore, excess collateral, if any, is not reflected above.

In addition to the amounts included in the tables above, the Company also has balance sheet netting related to derivatives. Refer to Note 6 — Derivatives to the Consolidated Financial Statements in this Form 10-Q for additional information.

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Note 5 — Securities

The following tables present the amortized cost, gross unrealized gains and losses and fair value by major categories of AFS and HTM debt securities as of September 30, 2023 and December 31, 2022:

	September 30, 2023
($ in thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
AFS debt securities:
U.S. Treasury securities	$	974,615	$	48	$	(70,562)	$	904,101
U.S. government agency and U.S. government-sponsored enterprise debt securities	512,712		—		(65,248)		447,464
U.S. government agency and U.S. government-sponsored enterprise mortgage-backed securities:
Commercial mortgage-backed securities	545,086		—		(82,754)		462,332
Residential mortgage-backed securities	1,983,284		15		(288,957)		1,694,342
Municipal securities	301,408		—		(57,852)		243,556
Non-agency mortgage-backed securities:
Commercial mortgage-backed securities	418,451		—		(53,131)		365,320
Residential mortgage-backed securities	687,674		—		(116,887)		570,787
Corporate debt securities	653,501		—		(178,067)		475,434
Foreign government bonds	237,531		75		(14,816)		222,790
Asset-backed securities	44,819		—		(1,062)		43,757
CLOs	617,250		—		(7,296)		609,954
Total AFS debt securities	6,976,331		138		(936,632)		6,039,837
HTM debt securities:
U.S. Treasury securities	528,169		—		(57,551)		470,618
U.S. government agency and U.S. government-sponsored enterprise debt securities	1,001,298		—		(249,007)		752,291
U.S. government agency and U.S. government-sponsored enterprise mortgage-backed securities:
Commercial mortgage-backed securities	494,787		—		(112,623)		382,164
Residential mortgage-backed securities	750,888		—		(183,488)		567,400
Municipal securities	189,093		—		(53,518)		135,575
Total HTM debt securities	2,964,235		—		(656,187)		2,308,048
Total debt securities	$	9,940,566	$	138	$	(1,592,819)	$	8,347,885

26

	December 31, 2022
($ in thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
AFS debt securities:
U.S. Treasury securities	$	676,306	$	—	$	(70,103)	$	606,203
U.S. government agency and U.S. government-sponsored enterprise debt securities	517,806		67		(56,266)		461,607
U.S. government agency and U.S. government-sponsored enterprise mortgage-backed securities:
Commercial mortgage-backed securities	577,392		—		(77,123)		500,269
Residential mortgage-backed securities	2,011,054		41		(248,900)		1,762,195
Municipal securities	303,884		3		(46,788)		257,099
Non-agency mortgage-backed securities:
Commercial mortgage-backed securities	447,512		213		(49,396)		398,329
Residential mortgage-backed securities	762,202		—		(112,978)		649,224
Corporate debt securities	673,502		—		(147,228)		526,274
Foreign government bonds	241,165		174		(14,286)		227,053
Asset-backed securities	51,152		—		(2,076)		49,076
CLOs	617,250		—		(19,586)		597,664
Total AFS debt securities	6,879,225		498		(844,730)		6,034,993
HTM debt securities:
U.S. Treasury securities	524,081		—		(52,612)		471,469
U.S. government agency and U.S. government-sponsored enterprise debt securities	998,972		—		(209,560)		789,412
U.S. government agency and U.S. government-sponsored enterprise mortgage-backed securities:
Commercial mortgage-backed securities	506,965		—		(98,566)		408,399
Residential mortgage-backed securities	782,141		—		(148,230)		633,911
Municipal securities	189,709		—		(37,729)		151,980
Total HTM debt securities	3,001,868		—		(546,697)		2,455,171
Total debt securities	$	9,881,093	$	498	$	(1,391,427)	$	8,490,164

As of September 30, 2023 and December 31, 2022, the amortized cost of debt securities excluded accrued interest receivables of $42.6 million and $41.8 million, respectively, which are included in Other assets on the Consolidated Balance Sheet. For the Company’s accounting policy related to debt securities’ accrued interest receivable, see Note 1 — Summary of Significant Accounting Policies — Significant Accounting Policies — Allowance for Credit Losses on Available-for-Sale Debt Securities and Allowance for Credit Losses on Held-to-Maturity Debt Securities to the Consolidated Financial Statements in the Company’s 2022 Form 10-K.

27

Unrealized Losses of Available-for-Sale Debt Securities

The following tables present the fair value and the associated gross unrealized losses of the Company’s AFS debt securities, aggregated by investment category and the length of time that the securities have been in a continuous unrealized loss position as of September 30, 2023 and December 31, 2022.

	September 30, 2023
	Less Than 12 Months				12 Months or More				Total
($ in thousands)	Fair Value		Gross Unrealized Losses		Fair Value		Gross Unrealized Losses		Fair Value		Gross Unrealized Losses
AFS debt securities:
U.S. Treasury securities	$	—	$	—	$	605,730	$	(70,562)	$	605,730	$	(70,562)
U.S. government agency and U.S. government sponsored enterprise debt securities	199,139		(861)		248,325		(64,387)		447,464		(65,248)
U.S. government agency and U.S. government-sponsored enterprise mortgage-backed securities:
Commercial mortgage-backed securities	4,434		(96)		457,898		(82,658)		462,332		(82,754)
Residential mortgage-backed securities	63,660		(517)		1,627,451		(288,440)		1,691,111		(288,957)
Municipal securities	5,891		(288)		237,665		(57,564)		243,556		(57,852)
Non-agency mortgage-backed securities:
Commercial mortgage-backed securities	—		—		365,320		(53,131)		365,320		(53,131)
Residential mortgage-backed securities	—		—		570,787		(116,887)		570,787		(116,887)
Corporate debt securities	—		—		475,434		(178,067)		475,434		(178,067)
Foreign government bonds	109,413		(249)		85,433		(14,567)		194,846		(14,816)
Asset-backed securities	—		—		43,757		(1,062)		43,757		(1,062)
CLOs	—		—		609,954		(7,296)		609,954		(7,296)
Total AFS debt securities	$	382,537	$	(2,011)	$	5,327,754	$	(934,621)	$	5,710,291	$	(936,632)

	December 31, 2022
	Less Than 12 Months				12 Months or More				Total
($ in thousands)	Fair Value		Gross Unrealized Losses		Fair Value		Gross Unrealized Losses		Fair Value		Gross Unrealized Losses
AFS debt securities:
U.S. Treasury securities	$	131,843	$	(8,761)	$	474,360	$	(61,342)	$	606,203	$	(70,103)
U.S. government agency and U.S. government-sponsored enterprise debt securities	97,403		(6,902)		214,136		(49,364)		311,539		(56,266)
U.S. government agency and U.S. government-sponsored enterprise mortgage-backed securities:
Commercial mortgage-backed securities	252,144		(30,029)		248,125		(47,094)		500,269		(77,123)
Residential mortgage-backed securities	307,536		(20,346)		1,448,658		(228,554)		1,756,194		(248,900)
Municipal securities	95,655		(10,194)		159,439		(36,594)		255,094		(46,788)
Non-agency mortgage-backed securities:
Commercial mortgage-backed securities	106,184		(3,309)		282,301		(46,087)		388,485		(49,396)
Residential mortgage-backed securities	22,715		(1,546)		626,509		(111,432)		649,224		(112,978)
Corporate debt securities	173,595		(17,907)		352,679		(129,321)		526,274		(147,228)
Foreign government bonds	107,576		(429)		36,143		(13,857)		143,719		(14,286)
Asset-backed securities	12,450		(524)		36,626		(1,552)		49,076		(2,076)
CLOs	144,365		(4,735)		453,299		(14,851)		597,664		(19,586)
Total AFS debt securities	$	1,451,466	$	(104,682)	$	4,332,275	$	(740,048)	$	5,783,741	$	(844,730)

28

As of September 30, 2023, the Company had 567 AFS debt securities in a gross unrealized loss position with no credit impairment, primarily consisting of 269 U.S. government agency and U.S. government-sponsored enterprise mortgage-backed securities, 66 corporate debt securities, and 99 non-agency mortgage-backed securities. In comparison, as of December 31, 2022, the Company had 559 AFS debt securities in a gross unrealized loss position with no credit impairment, primarily consisting of 263 U.S. government agency and U.S. government-sponsored enterprise mortgage-backed securities, 100 non-agency mortgage-backed securities, and 68 corporate debt securities.

Allowance for Credit Losses on Available-for-Sale Debt Securities

The Company evaluates each AFS debt security where the fair value declines below amortized cost. For a discussion of the factors and criteria the Company uses in analyzing securities for impairment related to credit losses, see Note 1 — Summary of Significant Accounting Policies — Significant Accounting Policies — Allowance for Credit Losses on Available-for-Sale Debt Securities to the Consolidated Financial Statements in the Company’s 2022 Form 10-K.

The gross unrealized losses presented in the preceding tables were primarily attributable to interest rate movement and the widening of liquidity and/or credit spreads. U.S. Treasury, U.S. government agency, U.S. government-sponsored agency, and U.S. government-sponsored enterprise debt and mortgage-backed securities are issued, guaranteed, or otherwise supported by the U.S. government and have a zero credit loss assumption. The remaining securities that were in an unrealized loss position as of September 30, 2023 were mainly comprised of the following:

•Non-agency mortgage-backed securities — The market value decline as of September 30, 2023, was primarily due to interest rate movement and spread widening. Since these securities are rated investment grade by nationally recognized statistical rating organizations (“NRSROs”), or have high priority in the cash flow waterfall within the securitization structure, and the contractual payments have historically been on time, the Company believes the risk of credit losses on these securities is low.

•Corporate debt securities — The market value decline as of September 30, 2023 was primarily due to interest rate movement and spread widening. A portion of the corporate debt securities is comprised of subordinated debt securities issued by U.S. banks. Despite the reduction of the market value of these securities after the banking sector disruption in the first nine months of 2023, these securities are nearly all rated investment grade by NRSROs or issued by well-capitalized financial institutions with strong profitability. The contractual payments from these corporate debt securities have been and are expected to be received on time. The Company will continue to monitor the market developments in the banking sector and the credit performance of these securities.

As of both September 30, 2023 and December 31, 2022, the Company intended to hold the AFS debt securities with unrealized losses through the anticipated recovery period and it was more-likely-than-not that the Company would not have to sell these securities before the recovery of their amortized cost. The issuers of these securities have not, to the Company’s knowledge, established any cause for default on these securities. As a result, the Company expects to recover the entire amortized cost basis of these securities. Accordingly, there was no allowance for credit losses provided against these securities as of both September 30, 2023 and December 31, 2022. In addition, there was no provision for credit losses recognized for the three and nine months ended September 30, 2023 and 2022.

Allowance for Credit Losses on Held-to-Maturity Debt Securities

The Company separately evaluates its HTM debt securities for any credit losses using an expected loss model, similar to the methodology used for loans. For additional information on the Company’s credit loss methodology, refer to Note 1 — Summary of Significant Accounting Policies — Significant Accounting Policies — Allowance for Credit Losses on Held-to-Maturity Debt Securities to the Consolidated Financial Statements in the Company’s 2022 Form 10-K.

The Company monitors the credit quality of the HTM debt securities using external credit ratings. As of September 30, 2023, all HTM securities were rated investment grade by NRSROs and issued, guaranteed, or supported by U.S. government entities and agencies. Accordingly, the Company applied a zero credit loss assumption and no allowance for credit losses was recorded as of both September 30, 2023 and December 31, 2022. Overall, the Company believes that the credit support levels of the debt securities are strong, and based on current assessments and macroeconomic forecasts, expects that full contractual cash flows will be received.

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Realized Gains and Losses

The following table presents the gross realized gains from the sales and impairment write-off of AFS debt securities and the related tax expense (benefit) included in earnings for the three and nine months ended September 30, 2023 and 2022:

	Three Months Ended September 30,				Nine Months Ended September 30,
($ in thousands)	2023		2022		2023		2022
Gross realized gains from sales	$	—	$	—	$	—	$	1,306
Impairment write-off (1)	$	—	$	—	$	10,000	$	—
Related tax expense (benefit)	$	—	$	—	$	(2,956)	$	386

(1)During the first quarter of 2023, the Company fully wrote down a subordinated debt security and recorded the impairment loss as a component of noninterest income in the Company’s Consolidated Statement of Income.

Interest Income

The following table presents the composition of interest income on debt securities for the three and nine months ended September 30, 2023 and 2022:

	Three Months Ended September 30,				Nine Months Ended September 30,
($ in thousands)	2023		2022		2023		2022
Taxable interest	$	63,877	$	46,172	$	189,065	$	125,626
Nontaxable interest	5,901		4,920		15,614		14,309
Total interest income on debt securities	$	69,778	$	51,092	$	204,679	$	139,935

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Contractual Maturities of Available-for-Sale and Held-to-Maturity Debt Securities

The following tables present the contractual maturities, amortized cost, fair value and weighted-average yields of AFS and HTM debt securities as of September 30, 2023. Expected maturities will differ from contractual maturities on certain securities as the issuers and borrowers of the underlying collateral may have the right to call or prepay obligations with or without prepayment penalties.

($ in thousands)	Within One Year			After One Year through Five Years			After Five Years through Ten Years			After Ten Years			Total
AFS debt securities:
U.S. Treasury securities
Amortized cost	$	298,323		$	676,292		$	—		$	—		$	974,615
Fair value	298,371			605,730			—			—			904,101
Weighted-average yield (1)	5.44		%	1.20		%	—		%	—		%	2.50		%
U.S. government agency and U.S. government-sponsored enterprise debt securities
Amortized cost	150,000			96,472			103,171			163,069			512,712
Fair value	149,616			91,343			82,252			124,253			447,464
Weighted-average yield (1)	4.98		%	3.08		%	1.39		%	2.18		%	3.01		%
U.S. government agency and U.S. government-sponsored enterprise mortgage-backed securities
Amortized cost	—			42,260			144,846			2,341,264			2,528,370
Fair value	—			39,718			128,933			1,988,023			2,156,674
Weighted-average yield (1) (2)	—		%	3.16		%	2.73		%	3.68		%	3.62		%
Municipal securities
Amortized cost	2,400			36,850			9,007			253,151			301,408
Fair value	2,383			33,794			7,596			199,783			243,556
Weighted-average yield (1) (2)	3.13		%	2.34		%	2.87		%	2.24		%	2.28		%
Non-agency mortgage-backed securities
Amortized cost	99,830			92,328			11,056			902,911			1,106,125
Fair value	98,420			89,370			10,793			737,524			936,107
Weighted-average yield (1)	6.27		%	4.16		%	0.80		%	2.58		%	3.02		%
Corporate debt securities
Amortized cost	—			—			349,501			304,000			653,501
Fair value	—			—			280,812			194,622			475,434
Weighted-average yield (1)	—		%	—		%	3.48		%	1.97		%	2.78		%
Foreign government bonds
Amortized cost	32,875			104,656			50,000			50,000			237,531
Fair value	32,810			104,546			49,609			35,825			222,790
Weighted-average yield (1)	3.02		%	2.28		%	5.71		%	1.50		%	2.94		%
Asset-backed securities
Amortized cost	—			—			—			44,819			44,819
Fair value	—			—			—			43,757			43,757
Weighted-average yield (1)	—		%	—		%	—		%	6.01		%	6.01		%
CLOs
Amortized cost	—			—			319,000			298,250			617,250
Fair value	—			—			314,219			295,735			609,954
Weighted-average yield (1)	—		%	—		%	6.71		%	6.76		%	6.73		%
Total AFS debt securities
Amortized cost	$	583,428		$	1,048,858		$	986,581		$	4,357,464		$	6,976,331
Fair value	$	581,600		$	964,501		$	874,214		$	3,619,522		$	6,039,837
Weighted-average yield (1)	5.32		%	1.86		%	4.27		%	3.40		%	3.45		%

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($ in thousands)	Within One Year			After One Year through Five Years			After Five Years through Ten Years			After Ten Years			Total
HTM debt securities:
U.S. Treasury securities
Amortized cost	$	—		$	528,169		$	—		$	—		$	528,169
Fair value	—			470,618			—			—			470,618
Weighted-average yield (1)	—		%	1.05		%	—		%	—		%	1.05		%
U.S. government agency and U.S. government-sponsored enterprise debt securities
Amortized cost	—			—			328,870			672,428			1,001,298
Fair value	—			—			265,107			487,184			752,291
Weighted-average yield (1)	—		%	—		%	1.92		%	1.89		%	1.90		%
U.S. government agency and U.S. government-sponsored enterprise mortgage-backed securities
Amortized cost	—			—			94,992			1,150,683			1,245,675
Fair value	—			—			76,426			873,138			949,564
Weighted-average yield (1) (2)	—		%	—		%	1.56		%	1.68		%	1.67		%
Municipal securities
Amortized cost	—			—			—			189,093			189,093
Fair value	—			—			—			135,575			135,575
Weighted-average yield (1) (2)	—		%	—		%	—		%	1.99		%	1.99		%
Total HTM debt securities
Amortized cost	$	—		$	528,169		$	423,862		$	2,012,204		$	2,964,235
Fair value	$	—		$	470,618		$	341,533		$	1,495,897		$	2,308,048
Weighted-average yield (1)	—		%	1.05		%	1.84		%	1.78		%	1.66		%

(1)Weighted-average yields are computed based on amortized cost balances.

(2)Yields on tax-exempt securities are not presented on a tax-equivalent basis.

As of September 30, 2023 and December 31, 2022, AFS and HTM debt securities with carrying values of $7.04 billion and $794.2 million, respectively, were pledged to secure borrowings, public deposits, repurchase agreements and for other purposes required or permitted by law.

Restricted Equity Securities

The following table presents the restricted equity securities included in Other assets on the Consolidated Balance Sheet as of September 30, 2023 and December 31, 2022:

($ in thousands)	September 30, 2023		December 31, 2022
Federal Reserve Bank of San Francisco (“FRBSF”) stock	$	62,272	$	61,374
FHLB stock	17,250		17,250
Total restricted equity securities	$	79,522	$	78,624

Note 6 — Derivatives

The Company uses derivative instruments to manage exposure to market risk, primarily interest rate and foreign currency risks, as well as to assist customers with their risk management objectives. The Company’s goal is to manage interest rate sensitivity and volatility to mitigate the effect of interest rate changes on earnings or capital. The Company also uses foreign exchange contracts to manage the foreign exchange rate risk associated with certain foreign currency-denominated assets and liabilities, as well as the Bank’s investment in East West Bank (China) Limited. The Company recognizes all derivatives on the Consolidated Balance Sheet at fair value. While the Company designates certain derivatives as hedging instruments in a qualifying hedge accounting relationship, other derivatives serve as economic hedges. For additional information on the Company’s derivatives and hedging activities, see Note 1 — Summary of Significant Accounting Policies — Significant Accounting Policies — Derivatives to the Consolidated Financial Statements of the Company’s 2022 Form 10-K.

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The following table presents the notional amounts and fair values of the Company’s derivatives as of September 30, 2023 and December 31, 2022. Certain derivative contracts are cleared though central clearing organizations where variation margin is applied daily as settlement to the fair values of the contracts. The fair values are presented on a gross basis prior to the application of bilateral collateral and master netting agreements, but after the application of variation margin payments as settlement to fair values of contracts cleared through central clearing organizations. Applying variation margin payments as settlement to the fair values of derivative contracts cleared through the London Clearing House (“LCH”) and the Chicago Mercantile Exchange (“CME”) resulted in reductions in the derivative asset and liability fair values by $16.0 million and $65.7 million, respectively, as of September 30, 2023. In comparison, applying variation margin payments as settlement to LCH- and CME-cleared derivative transactions resulted in reductions in the derivative asset and liability fair values by $167.2 million and $81.3 million, respectively, as of December 31, 2022. Total derivative asset and liability fair values are adjusted to reflect the effects of legally enforceable master netting agreements and cash collateral received or paid. The resulting net derivative asset and liability fair values are included in Other assets and Accrued expenses and other liabilities, respectively, on the Consolidated Balance Sheet.

	September 30, 2023								December 31, 2022
			Fair Value								Fair Value
($ in thousands)	Notional Amount		Derivative Assets			Derivative Liabilities			Notional Amount		Derivative Assets			Derivative Liabilities
Derivatives designated as hedging instruments:
Cash flow hedges:
Interest rate contracts	$	5,000,000	$	1,288		$	96,382		$	3,450,000	$	13,455		$	19,687
Net investment hedges:
Foreign exchange contracts	81,480		3,709			—			84,832		5,590			—
Total derivatives designated as hedging instruments	$	5,081,480	$	4,997		$	96,382		$	3,534,832	$	19,045		$	19,687
Derivatives not designated as hedging instruments:
Interest rate contracts	$	17,456,102	$	622,799		$	615,920		$	16,932,414	$	426,828		$	564,829
Commodity contracts (1)	—		137,500			143,855			—		261,613			258,608
Foreign exchange contracts	5,205,007		96,668			77,099			2,982,891		47,519			44,117
Credit contracts (2)	143,703		—			12			140,950		—			23
Equity contracts	—		352		(3)	15,119		(4)	—		323		(3)	—
Total derivatives not designated as hedging instruments	$	22,804,812	$	857,319		$	852,005		$	20,056,255	$	736,283		$	867,577
Gross derivative assets/liabilities			$	862,316		$	948,387				$	755,328		$	887,264
Less: Master netting agreements			(260,648)			(260,648)					(242,745)			(242,745)
Less: Cash collateral received			(269,683)			(2,225)					(372,038)			—
Net derivative assets/liabilities			$	331,985		$	685,514				$	140,545		$	644,519

(1)The notional amount of the Company’s commodity contracts totaled 20,672 thousand barrels of crude oil and 363,020 thousand units of natural gas, measured in million British thermal units (“MMBTUs”) as of September 30, 2023. In comparison, the notional amount of the Company’s commodity contracts totaled 12,005 thousand barrels of crude oil and 247,704 thousand MMBTUs of natural gas as of December 31, 2022.

(2)The notional amount of the credit contracts reflects the Company’s pro-rata share of the derivative instruments in RPAs.

(3)The Company held warrant equity contracts in one public company and 13 private companies as of both September 30, 2023 and December 31, 2022.

(4)Equity contracts classified as derivative liabilities consist of 349,138 PRSUs granted as part of EWBC’s consideration in its investment in Rayliant.

Derivatives Designated as Hedging Instruments

Cash Flow Hedges — The Company uses interest rate swaps to hedge the variability in interest received on certain floating-rate commercial loans, or paid on certain floating-rate borrowings due to changes in contractually specified interest rates. As of September 30, 2023, interest rate contracts in notional amounts of $5.00 billion were designated as cash flow hedges to convert certain variable-rate loans from floating-rate payments to fixed-rate payments. Gains and losses on the hedging derivative instruments are recognized in AOCI and reclassified to earnings in the same period the hedged cash flows impact earnings and within the same income statement line item as the hedged cash flows. Considering the interest rates, yield curve and notional amount as of September 30, 2023, the Company expects to reclassify an estimated $66.2 million of after-tax net losses on derivative instruments designated as cash flow hedges from AOCI into earnings during the next 12 months.

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The following table presents the pre-tax changes in AOCI from cash flow hedges for the three and nine months ended September 30, 2023 and 2022. The after-tax impact of cash flow hedges on AOCI is shown in Note 14 — Accumulated Other Comprehensive Income (Loss) to the Consolidated Financial Statements in this Form-10-Q.

	Three Months Ended September 30,				Nine Months Ended September 30,
($ in thousands)	2023		2022		2023			2022
Losses recognized in AOCI:
Interest rate contracts	$	(62,715)	$	(48,325)	$	(129,329)		$	(88,771)
Gains (losses) reclassified from AOCI into earnings:
Interest expense (for cash flow hedges on borrowings)	$	—	$	1,251	$	696		$	1,385
Interest and dividend income (for cash flow hedges on loans)	(24,059)		(2,870)		(57,265)			216
Noninterest income	—		—		1,614		(1)	—
Total	$	(24,059)	$	(1,619)	$	(54,955)		$	1,601

(1)Represents the amounts in AOCI reclassified into earnings as a result that the forecasted cash flows were no longer probable to occur.

Net Investment Hedges — The Company enters into foreign currency forward contracts to hedge a portion of the Bank’s investment in East West Bank (China) Limited, a non-USD functional currency subsidiary in China. The hedging instruments designated as net investment hedges were used to hedge against the risk of adverse changes in the foreign currency exchange rate of the Chinese Renminbi (“RMB”). The following table presents the pre-tax gains recognized in AOCI on net investment hedges for the three and nine months ended September 30, 2023 and 2022:

	Three Months Ended September 30,				Nine Months Ended September 30,
($ in thousands)	2023		2022		2023		2022
Gains recognized in AOCI	$	63	$	4,343	$	2,886	$	6,027

Derivatives Not Designated as Hedging Instruments

Customer-Related Positions and Economic Hedge Derivatives — The Company enters into interest rate, commodity, and foreign exchange derivatives at the request of its customers and generally enters into offsetting derivative contracts with third-party financial institutions to mitigate the inherent market risk. The Company also utilizes foreign exchange contracts to mitigate the effect of currency fluctuations on certain foreign currency-denominated on-balance sheet assets and liabilities, primarily foreign currency denominated deposits that it offers to its customers. A majority of the foreign exchange contracts had original maturities of one year or less as of both September 30, 2023 and December 31, 2022.

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The following table presents the notional amounts and the gross fair values of the interest rate and foreign exchange derivatives entered into with customers and with third-party financial institutions as economic hedges to customers’ positions as of September 30, 2023 and December 31, 2022:

	September 30, 2023						December 31, 2022
			Fair Value						Fair Value
($ in thousands)	Notional Amount		Assets		Liabilities		Notional Amount		Assets		Liabilities
Customer-related positions:
Interest rate contracts:
Swaps	$	6,890,450	$	691	$	584,962	$	6,656,491	$	1,438	$	521,719
Written options	1,486,958		—		21,864		1,548,158		—		30,904
Collars and corridors	306,996		—		7,619		215,773		—		8,924
Subtotal	8,684,404		691		614,445		8,420,422		1,438		561,547
Foreign exchange contracts:
Forwards and spot	62,237		11,376		24,484		993,588		17,009		18,090
Swaps	2,494,517		16,282		23,687		623,143		6,629		12,178
Other	142,000		5,630		—		121,631		2,070		245
Subtotal	2,698,754		33,288		48,171		1,738,362		25,708		30,513
Total	$	11,383,158	$	33,979	$	662,616	$	10,158,784	$	27,146	$	592,060
Economic hedges:
Interest rate contracts:
Swaps	$	6,916,364	$	592,177	$	1,119	$	6,683,828	$	384,201	$	2,047
Purchased options	1,517,648		22,285		—		1,580,275		32,233		—
Written options	30,690		—		356		32,117		—		1,235
Collars and corridors	306,996		7,646		—		215,772		8,956		—
Subtotal	8,771,698		622,108		1,475		8,511,992		425,390		3,282
Foreign exchange contracts:
Forwards and spot	1,060,498		452		313		77,998		3,050		87
Swaps	1,303,755		62,928		22,985		1,044,900		18,516		11,447
Other	142,000		—		5,630		121,631		245		2,070
Subtotal	2,506,253		63,380		28,928		1,244,529		21,811		13,604
Total	$	11,277,951	$	685,488	$	30,403	$	9,756,521	$	447,201	$	16,886

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The Company enters into energy commodity contracts with its customers in the oil and gas sector, which allow them to hedge against the risk of fluctuation in energy commodity prices. Offsetting contracts entered with third-party financial institutions are used as economic hedges to manage the Company’s exposure on its customer-related positions. The following table presents the notional amounts in units and the gross fair values of the commodity derivatives issued for customer-related positions and economic hedges as of September 30, 2023 and December 31, 2022:

	September 30, 2023						December 31, 2022
			Fair Value						Fair Value
($ and unit in thousands)	Notional Units		Assets		Liabilities		Notional Units		Assets		Liabilities
Customer-related positions:
Commodity contracts:
Crude oil:
Swaps	3,958	Barrels	$	27,543	$	1,717	2,465	Barrels	$	39,955	$	6,178
Collars	6,362	Barrels	24,552		119		3,011	Barrels	16,038		2,630
Written options	—	Barrels	—		—		—	Barrels	558		—
Subtotal	10,320	Barrels	52,095		1,836		5,476	Barrels	56,551		8,808
Natural gas:
Swaps	129,940	MMBTUs	32,428		55,387		92,590	MMBTUs	112,314		73,208
Collars	50,763	MMBTUs	865		11,535		32,072	MMBTUs	2,217		18,317
Written options	1,955	MMBTUs	—		206		—	MMBTUs	—		—
Subtotal	182,658	MMBTUs	33,293		67,128		124,662	MMBTUs	114,531		91,525
Total			$	85,388	$	68,964			$	171,082	$	100,333
Economic hedges:
Commodity contracts:
Crude oil:
Swaps	3,990	Barrels	$	2,165	$	24,403	2,587	Barrels	$	6,935	$	36,060
Collars	6,362	Barrels	—		18,781		3,942	Barrels	1,378		12,856
Purchased options	—	Barrels	—		—		—	Barrels	—		516
Subtotal	10,352	Barrels	2,165		43,184		6,529	Barrels	8,313		49,432
Natural gas:
Swaps	129,405	MMBTUs	42,804		31,289		91,900	MMBTUs	69,767		106,883
Collars	49,003	MMBTUs	6,937		418		31,142	MMBTUs	12,451		1,960
Purchased options	1,955	MMBTUs	206		—		—	MMBTUs	—		—
Subtotal	180,363	MMBTUs	49,947		31,707		123,042	MMBTUs	82,218		108,843
Total			$	52,112	$	74,891			$	90,531	$	158,275

Credit Contracts — The Company periodically enters into credit RPAs with institutional counterparties to manage the credit exposure of the interest rate contracts associated with syndication loans. Under the RPAs, a portion of the credit exposure is transferred from one party (the purchaser of credit protection) to another party (the seller of credit protection). The seller of credit protection is required to make payments to the purchaser of credit protection if the underlying borrower defaults on the related interest rate contract. The Company may enter into protection sold or protection purchased RPAs. Credit risk on RPAs is managed by monitoring the credit worthiness of the borrowers and the institutional counterparties, which is a part of the Company’s normal credit review and monitoring process. All referenced entities of the protection sold RPAs were investment grade and the weighted-average remaining maturity was 2.5 years and 2.4 years as of September 30, 2023 and December 31, 2022, respectively. Assuming that the underlying borrowers referenced in the interest rate contracts defaulted, the Company would not have any current exposure in the protection sold RPAs as of both September 30, 2023 and December 31, 2022.

As of September 30, 2023, the Company had outstanding protection purchased RPAs with notional amount of $25.0 million and minimal fair value. In comparison, the Company did not have any outstanding protection purchased RPAs as of December 31, 2022.

36

Equity Contracts — As part of the loan origination process, the Company may obtain warrants to purchase the preferred and/or common stock of the borrowers’ companies, which are mainly in the technology and life sciences sectors. Warrants grant the Company the right to buy a certain class of the underlying company’s equity at a certain price before expiration. In connection with the Company’s investment in Rayliant during the third quarter of 2023, the Company granted PRSUs as part of its consideration. The vesting of these equity contracts is contingent on Rayliant meeting certain financial performance targets during the future performance period. For additional information on these equity contracts, refer to Note 3 — Fair Value Measurement and Fair Value of Financial Instruments and Note 8 — Investments in Qualified Affordable Housing Partnerships, Tax Credit and Other Investments, Net and Variable Interest Entities to the Consolidated Financial Statements in this Form 10-Q.

The following table presents the net gains (losses) recognized on the Company’s Consolidated Statement of Income related to derivatives not designated as hedging instruments for the three and nine months ended September 30, 2023 and 2022:

	Classification on Consolidated Statement of Income	Three Months Ended September 30,				Nine Months Ended September 30,
($ in thousands)		2023		2022		2023		2022
Derivatives not designated as hedging instruments:
Interest rate contracts	Interest rate contracts and other derivative income	$	5,283	$	4,870	$	4,022	$	18,439
Foreign exchange contracts	Foreign exchange income	7,267		3,831		37,607		6,596
Credit contracts	Interest rate contracts and other derivative income	4		50		11		114
Equity contracts - warrants	Lending fees	89		(13)		29		175
Commodity contracts	Interest rate contracts and other derivative income	27		(156)		193		139
Net gains		$	12,670	$	8,582	$	41,862	$	25,463

Credit-Risk-Related Contingent Features — Certain of the Company’s over-the-counter derivative contracts contain early termination provisions that require the Company to settle any outstanding balances upon the occurrence of a specified credit-risk-related event. Such an event primarily relates to a downgrade of the credit rating of East West Bank to below investment grade. As of September 30, 2023, the aggregate fair value amounts of all derivative instruments with credit-risk-related contingent features that were in a net liability position totaled $2.2 million, and $2.2 million collateral was posted to cover these positions. In comparison, as of December 31, 2022, the aggregate fair value amounts of all derivative instruments with credit-risk-related contingent features that were in a net liability position totaled $2.6 million, of which $1.1 million of collateral was posted to cover these positions. If the credit rating of East West Bank had been downgraded to below investment grade, the Company would have been required to post minimal additional collateral as of both September 30, 2023 and December 31, 2022.

37

Offsetting of Derivatives

The following tables present the gross derivative fair values, the balance sheet netting adjustments, and the resulting net fair values recorded on the Consolidated Balance Sheet, as well as the cash and noncash collateral associated with master netting arrangements. The gross amounts of derivative assets and liabilities are presented after the application of variation margin payments as settlements to the fair values of contracts cleared through central clearing organizations, where applicable. The collateral amounts in the following tables are limited to the outstanding balances of the related asset or liability. Therefore, instances of over-collateralization are not shown:

($ in thousands)	As of September 30, 2023
	Gross Amounts Recognized (1)		Gross Amounts Offset on the Consolidated Balance Sheet				Net Amounts Presented on the Consolidated Balance Sheet		Gross Amounts Not Offset on the Consolidated Balance Sheet		Net Amount
			Master Netting Arrangements		Cash Collateral Received (3)				Security Collateral Received (5)
Derivative assets	$	862,316	$	(260,648)	$	(269,683)	$	331,985	$	(280,043)	$	51,942
	Gross Amounts Recognized (2)		Gross Amounts Offset on the Consolidated Balance Sheet				Net Amounts Presented on the Consolidated Balance Sheet		Gross Amounts Not Offset on the Consolidated Balance Sheet		Net Amount
			Master Netting Arrangements		Cash Collateral Pledged (4)				Security Collateral Pledged (5)
Derivative liabilities	$	948,387	$	(260,648)	$	(2,225)	$	685,514	$	—	$	685,514

($ in thousands)	As of December 31, 2022
	Gross Amounts Recognized (1)		Gross Amounts Offset on the Consolidated Balance Sheet				Net Amounts Presented on the Consolidated Balance Sheet		Gross Amounts Not Offset on the Consolidated Balance Sheet		Net Amount
			Master Netting Arrangements		Cash Collateral Received (3)				Security Collateral Received (5)
Derivative assets	$	755,328	$	(242,745)	$	(372,038)	$	140,545	$	(60,567)	$	79,978
	Gross Amounts Recognized (2)		Gross Amounts Offset on the Consolidated Balance Sheet				Net Amounts Presented on the Consolidated Balance Sheet		Gross Amounts Not Offset on the Consolidated Balance Sheet		Net Amount
			Master Netting Arrangements		Cash Collateral Pledged (4)				Security Collateral Pledged (5)
Derivative liabilities	$	887,264	$	(242,745)	$	—	$	644,519	$	(38,438)	$	606,081

(1)Includes $1.8 million and $2.1 million of gross fair value assets with counterparties that were not subject to enforceable master netting arrangements or similar agreements as of September 30, 2023 and December 31, 2022, respectively.

(2)Includes $16.2 million and $566 thousand of gross fair value liabilities with counterparties that were not subject to enforceable master netting arrangements or similar agreements as of September 30, 2023 and December 31, 2022, respectively.

(3)Gross cash collateral received under master netting arrangements or similar agreements was $275.7 million and $384.9 million as of September 30, 2023 and December 31, 2022, respectively. Of the gross cash collateral received, $269.7 million and $372.0 million were used to offset against derivative assets as of September 30, 2023 and December 31, 2022, respectively.

(4)Gross cash collateral pledged under master netting arrangements or similar agreements was $3.1 million and $490 thousand as of September 30, 2023 and December 31, 2022, respectively. Of the gross cash collateral pledged, $2.2 million was used to offset against derivative liabilities as of September 30, 2023. In comparison, no cash collateral was used to offset against derivative liabilities as of December 31, 2022.

(5)Represents the fair value of security collateral received or pledged limited to derivative assets or liabilities that are subject to enforceable master netting arrangements or similar agreements. U.S. GAAP does not permit the netting of noncash collateral on the Consolidated Balance Sheet but requires the disclosure of such amounts.

In addition to the amounts included in the tables above, the Company has balance sheet netting related to resale and repurchase agreements. Refer to Note 4 — Assets Purchased under Resale Agreements and Sold under Repurchase Agreements to the Consolidated Financial Statements in this Form 10-Q for additional information. Refer to Note 3 — Fair Value Measurement and Fair Value of Financial Instruments to the Consolidated Financial Statements in this Form 10-Q for fair value measurement disclosures on derivatives.

38

Note 7 — Loans Receivable and Allowance for Credit Losses

The following table presents the composition of the Company’s loans held-for-investment outstanding as of September 30, 2023 and December 31, 2022:

($ in thousands)	September 30, 2023		December 31, 2022
Commercial:
C&I	$	15,864,042	$	15,711,095
CRE:
CRE	14,667,378		13,857,870
Multifamily residential	4,900,097		4,573,068
Construction and land	798,190		638,420
Total CRE	20,365,665		19,069,358
Total commercial	36,229,707		34,780,453
Consumer:
Residential mortgage:
Single-family residential	12,836,558		11,223,027
HELOCs	1,776,665		2,122,655
Total residential mortgage	14,613,223		13,345,682
Other consumer	64,254		76,295
Total consumer	14,677,477		13,421,977
Total loans held-for-investment (1)	$	50,907,184	$	48,202,430
Allowance for loan losses	(655,523)		(595,645)
Loans held-for-investment, net (1)	$	50,251,661	$	47,606,785

(1)Includes $72.0 million and $70.4 million comprising unamortized deferred and unearned fees, net of premiums as of September 30, 2023 and December 31, 2022, respectively.

Accrued interest receivable on loans held-for-investment was $249.3 million and $208.4 million as of September 30, 2023 and December 31, 2022, respectively, and was included in Other assets on the Consolidated Balance Sheet. The interest income reversed was insignificant for both the three and nine months ended September 30, 2023 and 2022. For the Company’s accounting policy on accrued interest receivable related to loans held-for-investment, see Note 1 — Summary of Significant Accounting Policies — Significant Accounting Policies — Loans Held-for-Investment to the Consolidated Financial Statements of the Company’s 2022 Form 10-K. The Company also has loans held-for-sale. For the Company’s accounting policy on loans held-for-sale, refer to Note 1 — Summary of Significant Accounting Policies — Significant Accounting Policies — Loans Held-for-Sale to the Consolidated Financial Statements in the Company’s 2022 Form 10-K.

The Company’s FRBSF and FHLB borrowings are primarily secured by loans held-for-investment. Loans held-for-investment totaling $35.18 billion and $28.30 billion, respectively, were pledged to secure borrowings and provide additional borrowing capacity as of September 30, 2023 and December 31, 2022.

Credit Quality Indicators

All loans are subject to the Company’s credit review and monitoring process. For the commercial loan portfolio, loans are risk rated based on an analysis of the borrower’s current payment performance or delinquency, repayment sources, financial and liquidity factors, including industry and geographic considerations. For the consumer loan portfolio, payment performance or delinquency is typically the driving indicator for risk ratings.

The Company utilizes internal credit risk ratings to assign each individual loan a risk rating of 1 through 10:

•Pass — loans risk rated 1 through 5 are assigned an internal risk rating category of “Pass.” Loans risk rated 1 are typically loans fully secured by cash. Pass loans have sufficient sources of repayment to repay the loan in full, in accordance with all terms and conditions.

•Special mention — loans assigned a risk rating of 6 have potential weaknesses that warrant closer attention by management; these are assigned an internal risk rating category of “Special Mention.”

•Substandard — loans assigned a risk rating of 7 or 8 have well-defined weaknesses that may jeopardize the full and timely repayment of the loan; these are assigned an internal risk rating category of “Substandard.”

39

•Doubtful — loans assigned a risk rating of 9 have insufficient sources of repayment and a high probability of loss; these are assigned an internal risk rating category of “Doubtful.”

•Loss — loans assigned a risk rating of 10 are uncollectible and of such little value that they are no longer considered bankable assets; these are assigned an internal risk rating category of “Loss.”

Loan exposures categorized as criticized consist of special mention, substandard, doubtful and loss categories. The Company reviews the internal risk ratings of its loan portfolio on a regular basis, and adjusts the ratings based on changes in the borrowers’ financial status and the collectability of the loans.

The following tables summarize the Company’s loans held-for-investment and current year-to-date gross write-offs by loan portfolio segments, internal risk ratings and vintage year as of the periods presented. The vintage year is the year of loan origination, renewal or major modification. Revolving loans that are converted to term loans presented in the tables below are excluded from term loans by vintage year columns.

	September 30, 2023
	Term Loans by Origination Year
($ in thousands)	2023		2022		2021		2020		2019		Prior		Revolving Loans		Revolving Loans Converted to Term Loans (1)		Total
Commercial:
C&I:
Pass	$	1,858,749	$	1,942,241	$	1,470,818	$	354,650	$	259,342	$	164,149	$	9,254,852	$	20,248	$	15,325,049
Criticized (accrual)	88,542		110,918		91,272		45,069		25,603		23,640		104,802		—		489,846
Criticized (nonaccrual)	2,084		10,480		13		8,694		6,134		21,709		33		—		49,147
Total C&I	1,949,375		2,063,639		1,562,103		408,413		291,079		209,498		9,359,687		20,248		15,864,042
YTD gross write-offs (2)	350		28		161		15		6,606		1,684		—		—		8,844
CRE:
Pass	2,066,361		4,080,810		2,259,761		1,396,114		1,649,168		2,722,697		101,811		63,050		14,339,772
Criticized (accrual)	36,899		14,717		20,307		100,871		24,544		129,658		—		—		326,996
Criticized (nonaccrual)	—		—		—		—		451		159		—		—		610
Subtotal CRE	2,103,260		4,095,527		2,280,068		1,496,985		1,674,163		2,852,514		101,811		63,050		14,667,378
YTD gross write-offs (2)	—		—		—		—		—		119		—		—		119
Multifamily residential:
Pass	478,895		1,495,620		814,391		620,117		503,791		893,282		7,658		1,288		4,815,042
Criticized (accrual)	—		—		53,555		—		696		26,124		—		—		80,375
Criticized (nonaccrual)	—		—		—		—		—		4,680		—		—		4,680
Subtotal multifamily residential	478,895		1,495,620		867,946		620,117		504,487		924,086		7,658		1,288		4,900,097
Construction and land:
Pass	151,175		354,415		222,474		37,732		812		5,475		14,966		—		787,049
Criticized (nonaccrual)	—		—		—		—		—		11,141		—		—		11,141
Subtotal construction and land	151,175		354,415		222,474		37,732		812		16,616		14,966		—		798,190
YTD gross write-offs	—		—		—		—		—		10,413		—		—		10,413
Total CRE	2,733,330		5,945,562		3,370,488		2,154,834		2,179,462		3,793,216		124,435		64,338		20,365,665
YTD gross write-offs (2)	—		—		—		—		—		10,532		—		—		10,532
Total commercial	$	4,682,705	$	8,009,201	$	4,932,591	$	2,563,247	$	2,470,541	$	4,002,714	$	9,484,122	$	84,586	$	36,229,707
YTD total commercial gross write-offs (2)	$	350	$	28	$	161	$	15	$	6,606	$	12,216	$	—	$	—	$	19,376

40

	September 30, 2023
	Term Loans by Origination Year
($ in thousands)	2023		2022		2021		2020		2019		Prior		Revolving Loans		Revolving Loans Converted to Term Loans (1)		Total
Consumer:
Residential mortgage:
Single-family residential:
Pass (3)	$	2,400,448	$	3,390,708	$	2,321,209	$	1,633,316	$	1,010,859	$	2,040,678	$	—	$	—	$	12,797,218
Criticized (accrual)	844		1,983		844		1,499		964		9,060		—		—		15,194
Criticized (nonaccrual) (3)	1,916		2,866		4,702		2,696		2,868		9,098		—		—		24,146
Subtotal single-family residential mortgage	2,403,208		3,395,557		2,326,755		1,637,511		1,014,691		2,058,836		—		—		12,836,558
HELOCs:
Pass	182		1,828		5,736		4,318		1,963		13,821		1,611,319		118,088		1,757,255
Criticized (accrual)	741		401		62		—		353		1,649		2,039		963		6,208
Criticized (nonaccrual)	—		517		—		1,359		68		5,396		1,751		4,111		13,202
Subtotal HELOCs	923		2,746		5,798		5,677		2,384		20,866		1,615,109		123,162		1,776,665
YTD gross write-offs (2)	—		—		—		—		—		41		—		6		47
Total residential mortgage	2,404,131		3,398,303		2,332,553		1,643,188		1,017,075		2,079,702		1,615,109		123,162		14,613,223
YTD gross write-offs (2)	—		—		—		—		—		41		—		6		47
Other consumer:
Pass	3,555		18,138		135		—		—		12,315		29,971		—		64,114
Criticized (accrual)	4		—		—		—		—		—		—		—		4
Criticized (nonaccrual)	—		—		—		—		—		—		136		—		136
Total other consumer	3,559		18,138		135		—		—		12,315		30,107		—		64,254
Total consumer	$	2,407,690	$	3,416,441	$	2,332,688	$	1,643,188	$	1,017,075	$	2,092,017	$	1,645,216	$	123,162	$	14,677,477
YTD total consumer gross write-offs (2)	$	—	$	—	$	—	$	—	$	—	$	41	$	—	$	6	$	47
Total loans held-for-investment:
Pass	$	6,959,365	$	11,283,760	$	7,094,524	$	4,046,247	$	3,425,935	$	5,852,417	$	11,020,577	$	202,674	$	49,885,499
Criticized (accrual)	127,030		128,019		166,040		147,439		52,160		190,131		106,841		963		918,623
Criticized (nonaccrual)	4,000		13,863		4,715		12,749		9,521		52,183		1,920		4,111		103,062
Total	$	7,090,395	$	11,425,642	$	7,265,279	$	4,206,435	$	3,487,616	$	6,094,731	$	11,129,338	$	207,748	$	50,907,184
YTD total loans held-for-investment gross write-offs (2)	$	350	$	28	$	161	$	15	$	6,606	$	12,257	$	—	$	6	$	19,423

41

	December 31, 2022
	Term Loans by Origination Year
($ in thousands)	2022		2021		2020		2019		2018		Prior		Revolving Loans		Revolving Loans Converted to Term Loans (1)		Total
Commercial:
C&I:
Pass	$	2,831,834	$	2,053,215	$	623,026	$	392,013	$	143,970	$	97,605	$	9,177,401	$	20,548	$	15,339,612
Criticized (accrual)	72,210		34,296		48,761		34,221		20,646		12,933		97,988		—		321,055
Criticized (nonaccrual)	18,722		4,797		10,733		243		5,618		10,315		—		—		50,428
Total C&I	2,922,766		2,092,308		682,520		426,477		170,234		120,853		9,275,389		20,548		15,711,095
CRE:
Pass	4,178,780		2,404,634		1,505,150		1,771,679		1,471,710		1,909,925		165,653		22,009		13,429,540
Criticized (accrual)	3,518		60,573		159,424		40,095		91,132		32,173		1,455		16,716		405,086
Criticized (nonaccrual)	—		19,044		—		—		—		4,200		—		—		23,244
Subtotal CRE	4,182,298		2,484,251		1,664,574		1,811,774		1,562,842		1,946,298		167,108		38,725		13,857,870
Multifamily residential:
Pass	1,500,289		892,598		641,677		519,614		350,044		625,293		11,325		—		4,540,840
Criticized (accrual)	—		—		—		707		4,276		27,076		—		—		32,059
Criticized (nonaccrual)	—		—		—		—		—		169		—		—		169
Subtotal multifamily residential	1,500,289		892,598		641,677		520,321		354,320		652,538		11,325		—		4,573,068
Construction and land:
Pass	288,394		276,839		31,804		3,104		2,805		231		9,073		—		612,250
Criticized (accrual)	4,504		—		—		—		21,666		—		—		—		26,170
Subtotal construction and land	292,898		276,839		31,804		3,104		24,471		231		9,073		—		638,420
Total CRE	5,975,485		3,653,688		2,338,055		2,335,199		1,941,633		2,599,067		187,506		38,725		19,069,358
Total commercial	$	8,898,251	$	5,745,996	$	3,020,575	$	2,761,676	$	2,111,867	$	2,719,920	$	9,462,895	$	59,273	$	34,780,453
Consumer:
Residential mortgage:
Single-family residential:
Pass (3)	$	3,548,894	$	2,453,717	$	1,775,696	$	1,101,965	$	817,164	$	1,500,359	$	—	$	—	$	11,197,795
Criticized (accrual)	—		1,275		785		1,463		4,352		3,935		—		—		11,810
Criticized (nonaccrual) (3)	141		—		204		3,202		1,721		8,154		—		—		13,422
Subtotal single-family residential mortgage	3,549,035		2,454,992		1,776,685		1,106,630		823,237		1,512,448		—		—		11,223,027
HELOCs:
Pass	520		3,583		7,336		3,203		525		8,960		1,958,692		127,401		2,110,220
Criticized (accrual)	—		6		—		—		—		—		4		1,079		1,089
Criticized (nonaccrual)	—		—		483		231		1,017		4,844		1,001		3,770		11,346
Subtotal HELOCs	520		3,589		7,819		3,434		1,542		13,804		1,959,697		132,250		2,122,655
Total residential mortgage	3,549,555		2,458,581		1,784,504		1,110,064		824,779		1,526,252		1,959,697		132,250		13,345,682
Other consumer:
Pass	17,088		137		5,356		—		—		15,808		37,804		—		76,193
Criticized (accrual)	3		—		—		—		—		—		—		—		3
Criticized (nonaccrual)	—		—		—		—		—		—		99		—		99
Total other consumer	17,091		137		5,356		—		—		15,808		37,903		—		76,295
Total consumer	$	3,566,646	$	2,458,718	$	1,789,860	$	1,110,064	$	824,779	$	1,542,060	$	1,997,600	$	132,250	$	13,421,977
Total by Risk Rating:
Pass	$	12,365,799	$	8,084,723	$	4,590,045	$	3,791,578	$	2,786,218	$	4,158,181	$	11,359,948	$	169,958	$	47,306,450
Criticized (accrual)	80,235		96,150		208,970		76,486		142,072		76,117		99,447		17,795		797,272
Criticized (nonaccrual)	18,863		23,841		11,420		3,676		8,356		27,682		1,100		3,770		98,708
Total	$	12,464,897	$	8,204,714	$	4,810,435	$	3,871,740	$	2,936,646	$	4,261,980	$	11,460,495	$	191,523	$	48,202,430

(1)$11.2 million and $24.6 million of total commercial loans, primarily comprised of CRE revolving loans, converted to term loans during the three and nine months ended September 30, 2023, respectively. In comparison, $0 and $26.4 million of total commercial loans, primarily comprised of CRE revolving loans, converted to term loans during the three and nine months ended September 30, 2022. $20.6 million and $27.7 million of total consumer loans, comprised of HELOCs, were converted to term loans during three and nine months ended September 30, 2023, respectively. In comparison, $375 thousand of total consumer loans, comprised of HELOCs, converted to term loans during both the three and nine months ended September 30, 2022.

(2)Excludes gross write-offs associated with loans the Company sold or settled.

(3)As of September 30, 2023 and December 31, 2022, $638 thousand and $818 thousand, respectively, of nonaccrual loans whose payments were guaranteed by the Federal Housing Administration were classified with a “Pass” rating.

42

Nonaccrual and Past Due Loans

Loans that are 90 or more days past due are generally placed on nonaccrual status unless the loan is well-collateralized and in the process of collection. Loans that are less than 90 days past due but have identified deficiencies, such as when the full collection of principal or interest becomes uncertain, are also placed on nonaccrual status. The following tables present the aging analysis of loans held-for-investment as of September 30, 2023 and December 31, 2022:

	September 30, 2023
($ in thousands)	Current Accruing Loans		Accruing Loans 30-59 Days Past Due		Accruing Loans 60-89 Days Past Due		Total Accruing Past Due Loans		Total Nonaccrual Loans		Total Loans
Commercial:
C&I	$	15,781,468	$	33,195	$	232	$	33,427	$	49,147	$	15,864,042
CRE:
CRE	14,664,230		2,015		523		2,538		610		14,667,378
Multifamily residential	4,894,334		1,083		—		1,083		4,680		4,900,097
Construction and land	787,049		—		—		—		11,141		798,190
Total CRE	20,345,613		3,098		523		3,621		16,431		20,365,665
Total commercial	36,127,081		36,293		755		37,048		65,578		36,229,707
Consumer:
Residential mortgage:
Single-family residential	12,771,661		24,141		15,972		40,113		24,784		12,836,558
HELOCs	1,746,841		10,416		6,206		16,622		13,202		1,776,665
Total residential mortgage	14,518,502		34,557		22,178		56,735		37,986		14,613,223
Other consumer	63,992		109		17		126		136		64,254
Total consumer	14,582,494		34,666		22,195		56,861		38,122		14,677,477
Total	$	50,709,575	$	70,959	$	22,950	$	93,909	$	103,700	$	50,907,184

	December 31, 2022
($ in thousands)	Current Accruing Loans		Accruing Loans 30-59 Days Past Due		Accruing Loans 60-89 Days Past Due		Total Accruing Past Due Loans		Total Nonaccrual Loans		Total Loans
Commercial:
C&I	$	15,651,312	$	6,482	$	2,873	$	9,355	$	50,428	$	15,711,095
CRE:
CRE	13,820,441		14,185		—		14,185		23,244		13,857,870
Multifamily residential	4,571,899		678		322		1,000		169		4,573,068
Construction and land	638,420		—		—		—		—		638,420
Total CRE	19,030,760		14,863		322		15,185		23,413		19,069,358
Total commercial	34,682,072		21,345		3,195		24,540		73,841		34,780,453
Consumer:
Residential mortgage:
Single-family residential	11,183,134		13,523		12,130		25,653		14,240		11,223,027
HELOCs	2,102,523		7,700		1,086		8,786		11,346		2,122,655
Total residential mortgage	13,285,657		21,223		13,216		34,439		25,586		13,345,682
Other consumer	73,004		109		3,083		3,192		99		76,295
Total consumer	13,358,661		21,332		16,299		37,631		25,685		13,421,977
Total	$	48,040,733	$	42,677	$	19,494	$	62,171	$	99,526	$	48,202,430

43

The following table presents the amortized cost of loans on nonaccrual status for which there was no related allowance for loan losses as of both September 30, 2023 and December 31, 2022. Nonaccrual loans may not have an allowance for credit losses if the loan balances are well-secured by the collateral value and there is no loss expectation.

($ in thousands)	September 30, 2023		December 31, 2022
Commercial:
C&I	$	29,336	$	11,398
CRE	—		22,944
Multifamily residential	4,235		—
Construction and land	11,141		—
Total commercial	44,712		34,342
Consumer:
Single-family residential	6,681		2,998
HELOCs	8,483		7,245
Total consumer	15,164		10,243
Total nonaccrual loans with no related allowance for loan losses	$	59,876	$	44,585

Foreclosed Assets

The Company acquires assets from borrowers through loan restructurings, workouts, or foreclosures. Assets acquired may include real properties (e.g., residential real estate, land, and buildings) and commercial and personal properties. The Company recognizes foreclosed assets upon receiving assets in satisfaction of a loan (e.g., taking legal title or physical possession).

Foreclosed assets, consisting of OREO and other nonperforming assets, are included in Other assets on the Consolidated Balance Sheet. The Company had no foreclosed assets as of September 30, 2023, compared with $270 thousand as of December 31, 2022. The Company commences the foreclosure process on consumer mortgage loans after a borrower becomes more than 120 days delinquent in accordance with the CFPB guidelines. The carrying value of the consumer real estate loans that were in an active or suspended foreclosure process was $9.9 million and $7.5 million as of September 30, 2023 and December 31, 2022, respectively.

Loan Modifications to Borrowers Experiencing Financial Difficulty

Effective January 1, 2023, the Company adopted ASU 2022-02, which in part eliminated the accounting for TDR and enhanced disclosures requirements for loan modifications to borrowers experiencing financial difficulty. See Note 2 — Current Accounting Developments and Summary of Significant Accounting Policies — Significant Accounting Policies Update — Loan Modifications to the Consolidated Financial Statements in this Form 10-Q for additional information. As part of the Company’s loss mitigation efforts, the Company may agree to modify the contractual terms of a loan to assist borrowers experiencing financial difficulty. The Company negotiates loan modifications on a case-by-case basis to achieve mutually agreeable terms that maximize loan collectability and meet the borrower’s financial needs. The Company considers various factors to identify borrowers experiencing financial difficulty. The primary factor for consumer borrowers is delinquency status. For commercial loan borrowers, these factors include credit risk ratings, the probability of loan risk rating downgrades, and overall risk profile changes. The modification may include, but is not limited to, payment deferrals, interest rate reductions, term extensions, principal forgiveness, or a combination of such modifications. Commercial loan borrowers that require immaterial modifications such as insignificant interest rate changes, short-term extensions (90 days or less) from the original maturity date, or temporary waivers or extensions of financial covenants which would not constitute material credit actions, are generally not considered to be experiencing financial difficulty and are not included in the disclosure. Insignificant payment deferrals (three months or less in the last 12 months) are also not included in the disclosure.

44

The following tables present the amortized cost of loans that were modified during the three and nine months ended September 30, 2023 by loan class and modification type:

	Three Months Ended September 30, 2023
	Modification Type
($ in thousands)	Term Extension		Payment Delay		Combination: Term Extension/ Payment Delay		Combination: Rate Reduction/ Term Extension		Combination: Rate Reduction/ Payment Delay		Total		Modification as a % of Loan Class
Commercial:
C&I	$	1,682	$	11,603	$	—	$	—	$	—	$	13,285	0.08	%
CRE:
CRE	13,469		—		—		—		—		13,469		0.07	%
Total commercial	15,151		11,603		—		—		—		26,754
Consumer:
Residential mortgage:
Single-family residential:	—		2,944		1,260		—		—		4,204		0.03	%
HELOCs	—		—		334		—		183		517		0.03	%
Total consumer	—		2,944		1,594		—		183		4,721
Total	$	15,151	$	14,547	$	1,594	$	—	$	183	$	31,475

	Nine Months Ended September 30, 2023
	Modification Type
($ in thousands)	Term Extension		Payment Delay		Combination: Term Extension/ Payment Delay		Combination: Rate Reduction/ Term Extension		Combination: Rate Reduction/ Payment Delay		Total		Modification as a % of Loan Class
Commercial:
C&I	$	44,120	$	20,793	$	—	$	—	$	—	$	64,913	0.41	%
CRE:
CRE	13,979		—		—		32,724		—		46,703		0.23	%
Total commercial	58,099		20,793		—		32,724		—		111,616
Consumer:
Residential mortgage:
Single-family residential:	—		7,276		1,809		—		—		9,085		0.07	%
HELOCs	—		741		1,053		—		183		1,977		0.11	%
Total consumer	—		8,017		2,862		—		183		11,062
Total	$	58,099	$	28,810	$	2,862	$	32,724	$	183	$	122,678

45

The following tables present the financial effects of the loan modifications for the three and nine months ended September 30, 2023 by loan class and modification type:

	Financial Effects of Loan Modifications
	Three Months Ended September 30, 2023
($ in thousands)	Principal Forgiveness		Weighted-Average Interest Rate Reduction		Weighted-Average Term Extension (in years)	Weighted-Average Payment Delay (in years)
Commercial:
C&I	$	26	—	%	3.00	1.54
CRE	—		—	%	1.08	—
Consumer:
Single-family residential	—		—	%	10.00	0.96
HELOCs	—		0.50	%	16.68	0.71
Total	$	26

	Financial Effects of Loan Modifications
	Nine months ended September 30, 2023
($ in thousands)	Principal Forgiveness			Weighted-Average Interest Rate Reduction			Weighted-Average Term Extension (in years)	Weighted-Average Payment Delay (in years)
Commercial:
C&I	$	371	(1)	—	%	(1)	1.41	1.15
CRE	—			3.00	%		2.09	—
Consumer:
Single-family residential	—			—	%		9.91	0.95
HELOCs	—			0.50	%		15.36	0.52
Total	$	371

(1)Comprised of C&I loans modified during the nine months ended September 30, 2023 where the interest rate is waived in addition to principal forgiveness. No recorded investment was outstanding as of September 30, 2023.

A modified loan may become delinquent and may result in a payment default (generally 90 days past due) subsequent to modification. There were no loans that received modifications which subsequently defaulted during the three and nine months ended September 30, 2023.

The Company closely monitors the performance of modified loans to borrowers experiencing financial difficulty to understand the effectiveness of its modification efforts. The following table presents the performance of loans that were modified as of September 30, 2023 since the adoption of ASU 2022-02 on January 1, 2023.

	Payment Performance as of September 30, 2023
($ in thousands)	Current		30 - 89 Days Past Due		90+ Days Past Due		Total
Commercial:
C&I	$	58,481	$	—	$	6,432	$	64,913
CRE:
CRE	46,703		—		—		46,703
Total commercial	105,184		—		6,432		111,616
Consumer:
Residential mortgage:
Single-family residential	7,430		1,190		465		9,085
HELOCs	1,236		741		—		1,977
Total consumer	8,666		1,931		465		11,062
Total	$	113,850	$	1,931	$	6,897	$	122,678

46

As of September 30, 2023, commitments to lend additional funds to borrowers whose loans were modified were $5.8 million.

Troubled Debt Restructurings Prior to the Adoption of ASU 2022-02

Prior to the adoption of ASU 2022-02, the Company accounted for a modification to the contractual terms of a loan that resulted in granting a concession to a borrower experiencing financial difficulties as a TDR. ASU 2022-02 eliminated TDR accounting prospectively for all restructurings occurring on or after January 1, 2023.

The following table presents the additions to TDRs for the three and nine months ended September 30, 2022:

	Loans Modified as TDRs
	Three Months Ended September 30, 2022							Nine Months Ended September 30, 2022
($ in thousands)	Number of Loans	Pre-Modification Outstanding Recorded Investment		Post-Modification Outstanding Recorded Investment (1)		Financial Impact (2)		Number of Loans	Pre-Modification Outstanding Recorded Investment		Post-Modification Outstanding Recorded Investment (1)		Financial Impact (2)
Commercial:
C&I	1	$	499	$	496	$	98	4	$	30,633	$	17,802	$	16,729
Total commercial	1	499		496		98		4	30,633		17,802		16,729
Consumer:
Residential mortgage:
HELOCs	1	62		69		2		1	62		69		2
Total residential mortgage	1	62		69		2		1	62		69		2
Total consumer	1	62		69		2		1	62		69		2
Total	2	$	561	$	565	$	100	5	$	30,695	$	17,871	$	16,731

(1)Includes subsequent payments after modification and reflects the balance as of September 30, 2022.

(2)Includes charge-offs since the modification date.

The following table presents the TDR post-modification outstanding balances by the primary modification type for the three and nine months ended September 30, 2022:

	Modification Type
	Three Months Ended September 30, 2022						Nine Months Ended September 30, 2022
($ in thousands)	Principal		Other		Total		Principal (1)		Other (2)		Total
Commercial:
C&I	$	496	$	—	$	496	$	9,609	$	8,193	$	17,802
Total commercial	496		—		496		9,609		8,193		17,802
Consumer:
Residential mortgage:
HELOCs	69		—		69		69		—		69
Total residential mortgage	69		—		69		69		—		69
Total consumer	69		—		69		69		—		69
Total	$	565	$	—	$	565	$	9,678	$	8,193	$	17,871

(1)Includes principal deferments that modify the terms of the loan from principal and interest payments to interest payments only.

(2)Includes increase in new commitments.

47

After a loan is modified as a TDR, the Company continues to monitor its performance under its most recent restructured terms. A TDR may become delinquent and result in payment default (generally 90 days past due) subsequent to restructuring. The following table presents information on loans that entered into default during the three and nine months ended September 30, 2022 that were modified as TDRs during the 12 months preceding payment default:

	Loan Modified as TDRs that Subsequently Defaulted
	Three Months Ended September 30, 2022			Nine Months Ended September 30, 2022
($ in thousands)	Number of Loans	Recorded Investment		Number of Loans	Recorded Investment
Commercial:
C&I	—	$	—	2	$	13,901
CRE:
Multifamily residential	—	—		1	1,008
Total CRE	—	—		1	1,008
Total commercial	—	—		3	14,909
Total	—	$	—	3	$	14,909

As of December 31, 2022, the remaining lending commitments to borrowers whose terms of their outstanding owed balances were modified as TDRs was $16.2 million.

Allowance for Credit Losses

The Company has a current expected credit losses framework for all financial assets measured at amortized cost and certain off-balance sheet credit exposures. The Company’s allowance for credit losses, which includes both the allowance for loan losses and the allowance for unfunded credit commitments, is calculated with the objective of maintaining a reserve sufficient to absorb losses inherent in our credit portfolios. The measurement of the allowance for credit losses is based on management’s best estimate of lifetime expected credit losses, and periodic evaluation of the loan portfolio, lending-related commitments, and other relevant factors.

The allowance for credit losses is deducted from the amortized cost basis of a financial asset or a group of financial assets so that the balance sheet reflects the net amount the Company expects to collect. Amortized cost is the principal balance outstanding, net of purchase premiums and discounts, deferred fees and costs, and escrow advances. Subsequent changes in expected credit losses are recognized in net income as a provision for, or a reversal of, credit loss expense.

The allowance for credit losses estimation involves procedures to consider the unique risk characteristics of the portfolio segments. The majority of the Company’s credit exposures that share risk characteristics with other similar exposures are collectively evaluated. The collectively evaluated loans include performing loans and unfunded credit commitments. If an exposure does not share risk characteristics with other exposures, the Company generally estimates expected credit losses on an individual basis.

Allowance for Collectively Evaluated Loans

The allowance for collectively evaluated loans consists of a quantitative component that assesses the different risk factors considered in our models and a qualitative component that considers risk factors external to the models. Each of these components are described below.

Quantitative Component — The Company applies quantitative methods to estimate loan losses by considering a variety of factors such as historical loss experience, the current credit quality of the portfolio, and an economic outlook over the life of the loan. The Company incorporates forward-looking information using macroeconomic scenarios, which include variables that are considered key drivers of increases and decreases in credit losses. The Company utilizes a probability-weighted, multiple-scenario forecast approach. These scenarios may consist of a base forecast representing management's view of the most likely outcome, combined with downside or upside scenarios reflecting possible worsening or improving economic conditions. The quantitative models incorporate a probability-weighted calculation of these macroeconomic scenarios over a reasonable and supportable forecast period. If the life of the loans extends beyond the reasonable and supportable forecast period, the Company will consider historical experience or long-run macroeconomic trends over the remaining life of the loans to estimate the allowance for loan losses.

48

There were no changes to the reasonable and supportable forecast period, except to the C&I segment, and no changes to the reversion to the historical loss experience method for the three and nine months ended September 30, 2023 and 2022. The reasonable and supportable forecast period for the C&I segment changed from 11 quarters to eight quarters due to model redevelopment during the third quarter of 2023.

The following table provides key credit risk characteristics and macroeconomic variables that the Company uses to estimate the expected credit losses by portfolio segment:

Portfolio Segment	Risk Characteristics	Macroeconomic Variables
C&I	Age percentage, size at origination, delinquency status, sector and risk rating	Unemployment rate, Gross Domestic Product (“GDP”), and Two-Ten treasury spread (1)
CRE, Multifamily residential, and Construction and land	Delinquency status, maturity date, collateral value, property type, and geographic location	Unemployment rate, GDP, and U.S. Treasury rates
Single-family residential and HELOCs	FICO score, delinquency status, maturity date, collateral value, and geographic location	Unemployment rate, GDP, and home price index
Other consumer	Loss rate approach	Immaterial (2)

(1)Macroeconomic variables were updated due to model redevelopment.

(2)Macroeconomic variables are included in the qualitative estimate.

Quantitative Component — Allowance for Loan Losses for the Commercial Loan Portfolio

The Company’s C&I lifetime loss rate model estimates the loss rate expected over the life of a loan. This loss rate is applied to the amortized cost basis, excluding accrued interest receivable, to determine expected credit losses. The lifetime loss rate model’s reasonable and supportable period spans eight quarters, thereafter, immediately reverting to the historical average loss rate, expressed through the loan-level lifetime loss rate.

To generate estimates of expected loss at the loan level for CRE, multifamily residential, and construction and land loans, projected probabilities of default (“PDs”) and loss given defaults (“LGDs”) are applied to the estimated exposure at default, considering the term and payment structure of the loan. The forecast of future economic conditions returns to long-run historical economic trends within the reasonable and supportable period.

To estimate the life of a loan under both models, the contractual term of the loan is adjusted for estimated prepayments based on historical prepayment experience.

Quantitative Component — Allowance for Loan Losses for the Consumer Loan Portfolio

For single-family residential and HELOC loans, projected PDs and LGDs are applied to the estimated exposure at default, considering the term and payment structure of the loan, to generate estimates of expected loss at the loan level. The forecast of future economic conditions returns to long-run historical economic trends after the reasonable and supportable period. To estimate the life of a loan for the single-family residential and HELOC loan portfolios, the contractual term of the loan is adjusted for estimated prepayments based on historical prepayment experience. For other consumer loans, the Company uses a loss rate approach.

Qualitative Component — The Company also considers the following qualitative factors in the determination of the collectively evaluated allowance if these factors have not already been captured by the quantitative model. Such qualitative factors may include, but are not limited to:

—     loan growth trends;

—    the volume and severity of past due financial assets, and the volume and severity of adversely classified financial assets;

—    the Company’s lending policies and procedures, including changes in lending strategies, underwriting standards, collection, write-off, and recovery practices;

—    knowledge of a borrower’s operations;

—    the quality of the Company’s credit review system;

—    the experience, ability and depth of the Company’s management and associates;

—    the effect of other external factors such as the regulatory and legal environments, or changes in technology;

—    actual and expected changes in international, national, regional, and local economic and business conditions in which the Company operates; and

—    risk factors in certain industry sectors not captured by the quantitative models.

49

The magnitude of the impact of these factors on the Company’s qualitative assessment of the allowance for credit losses changes from period to period according to changes made by management in its assessment of these factors. The extent to which these factors change may be dependent on whether they are already reflected in quantitative loss estimates during the current period and the extent to which changes in these factors diverge from period to period.

While the Company’s allowance methodologies strive to reflect all relevant credit risk factors, there continues to be uncertainty associated with, but not limited to, potential imprecision in the estimation process due to the inherent time lag of obtaining information and normal variations between expected and actual outcomes. The Company may hold additional qualitative reserves that are designed to provide coverage for losses attributable to such risk.

Allowance for Individually Evaluated Loans

When a loan no longer shares similar risk characteristics with other loans, such as in the case of certain nonaccrual loans, the Company estimates the allowance for loan losses on an individual loan basis. The allowance for loan losses for individually evaluated loans is measured as the difference between the recorded value of the loans and their fair value. For loans evaluated individually, the Company uses one of three different asset valuation measurement methods: (1) the fair value of collateral less costs to sell; (2) the present value of expected future cash flows; or (3) the loan's observable market price. If an individually evaluated loan is determined to be collateral dependent, the Company applies the fair value of the collateral less costs to sell method. If an individually evaluated loan is determined not to be collateral dependent, the Company uses the present value of future cash flows or the observable market value of the loan.

•Collateral-Dependent Loans — The allowance of a collateral-dependent loan is limited to the difference between the recorded value and fair value of the collateral less cost of disposal or sale. As of September 30, 2023, collateral-dependent commercial and consumer loans totaled $18.1 million and $15.2 million, respectively. In comparison, collateral-dependent commercial and consumer loans totaled $47.4 million and $13.4 million, respectively, as of December 31, 2022. The collateral-dependent loans decreased from December 31, 2022, predominantly driven by the adoption of ASU 2022-02 related to the elimination of TDR guidance. The Company's collateral-dependent loans were secured by real estate. As of both September 30, 2023 and December 31, 2022, the collateral value of the properties securing the collateral-dependent loans, net of selling costs, exceeded the recorded value of the loans.

The following tables summarize the activity in the allowance for loan losses by portfolio segments for the three and nine months ended September 30, 2023 and 2022:

		Three Months Ended September 30, 2023
		Commercial								Consumer
				CRE						Residential Mortgage
($ in thousands)		C&I		CRE		Multifamily Residential		Construction and Land		Single-Family Residential		HELOCs		Other Consumer		Total
Allowance for loan losses, beginning of period		$	375,333	$	168,505	$	22,938	$	11,325	$	51,513	$	4,526	$	1,260	$	635,400
Provision for (reversal of) credit losses on loans	(a)	13,006		12,952		772		8,302		3,353		(705)		456		38,136
Gross charge-offs		(7,074)		(3,466)		—		(10,413)		—		(41)		(13)		(21,007)
Gross recoveries		2,279		49		452		2		64		15		—		2,861
Total net (charge-offs) recoveries		(4,795)		(3,417)		452		(10,411)		64		(26)		(13)		(18,146)
Foreign currency translation adjustment		133		—		—		—		—		—		—		133
Allowance for loan losses, end of period		$	383,677	$	178,040	$	24,162	$	9,216	$	54,930	$	3,795	$	1,703	$	655,523

50

		Three Months Ended September 30, 2022
		Commercial								Consumer
				CRE						Residential Mortgage
($ in thousands)		C&I		CRE		Multifamily Residential		Construction and Land		Single-Family Residential		HELOCs		Other Consumer		Total
Allowance for loan losses, beginning of period		$	363,282	$	140,245	$	26,552	$	6,682	$	21,840	$	3,220	$	1,449	$	563,270
Provision for credit losses on loans	(a)	9,575		5,299		5,047		817		6,182		99		255		27,274
Gross charge-offs		(6,894)		(288)		(5,938)		—		(775)		—		(10)		(13,905)
Gross recoveries		7,172		45		19		7		16		5		—		7,264
Total net recoveries (charge-offs)		278		(243)		(5,919)		7		(759)		5		(10)		(6,641)
Foreign currency translation adjustment		(1,386)		—		—		—		—		—		—		(1,386)
Allowance for loan losses, end of period		$	371,749	$	145,301	$	25,680	$	7,506	$	27,263	$	3,324	$	1,694	$	582,517

		Nine Months Ended September 30, 2023
		Commercial								Consumer
				CRE						Residential Mortgage
($ in thousands)		C&I		CRE		Multifamily Residential		Construction and Land		Single-Family Residential		HELOCs		Other Consumer		Total
Allowance for loan losses, December 31, 2022		$	371,700	$	149,864	$	23,373	$	9,109	$	35,564	$	4,475	$	1,560	$	595,645
Impact of ASU 2022-02 adoption		5,683		337		6		—		1		1		—		6,028
Allowance for loan losses, beginning of period		377,383		150,201		23,379		9,109		35,565		4,476		1,560		601,673
Provision for (reversal of) credit losses on loans	(a)	17,587		33,313		303		10,507		19,296		(569)		244		80,681
Gross charge-offs		(16,309)		(5,838)		—		(10,413)		—		(138)		(101)		(32,799)
Gross recoveries		5,555		364		480		13		69		26		—		6,507
Total net (charge-offs) recoveries		(10,754)		(5,474)		480		(10,400)		69		(112)		(101)		(26,292)
Foreign currency translation adjustment		(539)		—		—		—		—		—		—		(539)
Allowance for loan losses, end of period		$	383,677	$	178,040	$	24,162	$	9,216	$	54,930	$	3,795	$	1,703	$	655,523

		Nine Months Ended September 30, 2022
		Commercial								Consumer
				CRE						Residential Mortgage
($ in thousands)		C&I		CRE		Multifamily Residential		Construction and Land		Single-Family Residential		HELOCs		Other Consumer		Total
Allowance for loan losses, beginning of period		$	338,252	$	150,940	$	14,400	$	15,468	$	17,160	$	3,435	$	1,924	$	541,579
Provision for (reversal of) credit losses on loans	(a)	37,867		(5,013)		16,680		(8,027)		10,569		59		(140)		51,995
Gross charge-offs		(18,322)		(1,357)		(5,947)		—		(775)		(193)		(90)		(26,684)
Gross recoveries		16,688		731		547		65		309		23		—		18,363
Total net (charge-offs) recoveries		(1,634)		(626)		(5,400)		65		(466)		(170)		(90)		(8,321)
Foreign currency translation adjustment		(2,736)		—		—		—		—		—		—		(2,736)
Allowance for loan losses, end of period		$	371,749	$	145,301	$	25,680	$	7,506	$	27,263	$	3,324	$	1,694	$	582,517

51

In addition to the allowance for loan losses, the Company maintains an allowance for unfunded credit commitments. The Company has three general areas for which it provides the allowance for unfunded credit commitments: (1) recourse obligations for loans sold, (2) letters of credit, and (3) unfunded lending commitments. The allowance for unfunded credit commitments is maintained at a level that management believes to be sufficient to absorb estimated expected credit losses related to unfunded credit facilities. See Note 11 — Commitments and Contingencies to the Consolidated Financial Statements in this Form 10-Q for additional information related to unfunded credit commitments. The following table summarizes the activities in the allowance for unfunded credit commitments for the three and nine months ended September 30, 2023 and 2022:

		Three Months Ended September 30,				Nine Months Ended September 30,
($ in thousands)		2023		2022		2023		2022
Unfunded credit facilities
Allowance for unfunded credit commitments, beginning of period		$	29,728	$	24,304	$	26,264	$	27,514
Provision for (reversal of) credit losses on unfunded credit commitments	(b)	3,864		(274)		7,319		(3,495)
Foreign currency translation adjustment		(3)		11		6		22
Allowance for unfunded credit commitments, end of period		$	33,589	$	24,041	$	33,589	$	24,041
Provision for credit losses	(a) + (b)	$	42,000	$	27,000	$	88,000	$	48,500

The allowance for credit losses was $689.1 million as of September 30, 2023, an increase of $67.2 million, compared with $621.9 million as of December 31, 2022. The increase in the allowance for credit losses was primarily driven by net loan growth and economic forecasts that reflect continued caution given persistent high inflation, the high interest rate environment and the CRE market outlook.

The Company considers multiple economic scenarios to develop the estimate of the allowance for loan losses. The scenarios may consist of a baseline forecast representing management's view of the most likely outcome; downside and upside scenarios that reflect possible worsening or improving economic conditions, respectively. The Company assigned the same weightings to its baseline, upside and downside scenarios as of September 30, 2023 and December 31, 2022. Management remains cautious regarding the economic outlook, given the high level of inflation, high interest rates, recent strain to the financial system, concerns on global oil prices, and ongoing global conflicts. The 2023 full year U.S. baseline GDP growth forecast as of September 30, 2023, has improved, compared with that as of December 31, 2022. However the 2024 full year U.S. baseline GDP growth forecast remained at 1.4%, compared with 2.0% forecasted as of December 31, 2022, as interest-sensitive spending weakens amid the elevated interest rate environment. The 2023 full year U.S. unemployment rate is forecasted to be at 3.7%, which improved from that forecasted as of December 31, 2022. Compared with the baseline scenario, the downside scenario assumes a recession in the fourth quarter of 2023 due to a combination of increasing supply shortages, geopolitical tensions, high inflation, and high interest rates. The upside scenario assumes the economy experiences full employment in the near-term, and stable financial markets boosting consumer confidence.

Loan Transfers, Sales and Purchases

The Company’s primary business focus is on directly originated loans. The Company also purchases loans and participates in loan financing with other banks. In the normal course of business, the Company also provides other financial institutions with the ability to participate in commercial loans that it originates, by selling loans to such institutions. Purchased loans may be transferred from held-for-investment to held-for-sale, and write-downs to allowance for loan losses are recorded, when appropriate. The following tables provide information on the carrying value of loans transferred, sold and purchased for the held-for-investment portfolio, during the three and nine months ended September 30, 2023 and 2022:

	Three Months Ended September 30, 2023
	Commercial						Consumer
			CRE				Residential Mortgage
($ in thousands)	C&I		CRE		Construction and Land		Single-Family Residential		Total
Loans transferred from held-for-investment to held-for-sale (1)	$	201,299	$	25,890	$	—	$	—	$	227,189
Sales (2)(3)	$	199,511	$	29,357	$	—	$	—	$	228,868
Purchases (4)	$	19,588	$	—	$	—	$	140,771	$	160,359

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	Three Months Ended September 30, 2022
	Commercial						Consumer
			CRE				Residential Mortgage
($ in thousands)	C&I		CRE		Multifamily Residential		Single-Family Residential		Total
Loans transferred from held-for-investment to held-for-sale (1)	$	59,069	$	33,616	$	14,500	$	5,178	$	112,363
Sales (2)(3)	$	87,597	$	33,616	$	—	$	5,952	$	127,165
Purchases (4)	$	56,507	$	—	$	—	$	1,155	$	57,662

	Nine Months Ended September 30, 2023
	Commercial						Consumer
			CRE				Residential Mortgage
($ in thousands)	C&I		CRE		Construction and Land		Single-Family Residential		Total
Loans transferred from held-for-investment to held-for-sale (1)	$	469,571	$	29,490	$	8,154	$	—	$	507,215
Sales (2)(3)	$	491,178	$	32,957	$	8,154	$	—	$	532,289
Purchases (4)	$	80,550	$	—	$	—	$	351,880	$	432,430

	Nine Months Ended September 30, 2022
	Commercial						Consumer
			CRE				Residential Mortgage
($ in thousands)	C&I		CRE		Multifamily Residential		Single-Family Residential		Total
Loans transferred from held-for-investment to held-for-sale (1)	$	378,841	$	65,250	$	14,500	$	5,178	$	463,769
Loans transferred from held-for-sale to held-for-investment	$	—	$	—	$	—	$	631	$	631
Sales (2)(3)	$	375,100	$	65,250	$	—	$	6,403	$	446,753
Purchases (4)	$	361,169	$	—	$	—	$	238,253	$	599,422

(1)Includes write-downs of $3.6 million and $4.2 million to the allowance for loan losses related to loans transferred from held-for-investment to held-for-sale for the three and nine months ended September 30, 2023, respectively, and $8.7 million and $8.9 million for the three and nine months ended September 30, 2022, respectively.

(2)Includes originated loans sold of $204.1 million and $407.3 million for the three and nine months ended September 30, 2023, respectively, and $86.2 million and $253.9 million for the three and nine months ended September 30, 2022, respectively. Originated loans sold consisted primarily of C&I loans for each of the three and nine months ended September 30, 2023, and C&I and CRE loans for each of the three and nine months ended September 30, 2022.

(3)Includes $24.7 million and $125.0 million of purchased loans sold in the secondary market for the three and nine months ended September 30, 2023, respectively, and $40.9 million and $192.9 million for the three and nine months ended September 30, 2022, respectively.

(4)C&I loan purchases were comprised primarily of syndicated C&I term loans.

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Note 8 — Investments in Qualified Affordable Housing Partnerships, Tax Credit and Other Investments, Net and Variable Interest Entities

The CRA encourages banks to meet the credit needs of their communities, particularly low- and moderate-income individuals and neighborhoods. The Company invests in certain affordable housing projects in the form of ownership interests in limited partnerships or limited liability companies that qualify for CRA consideration and tax credits. These entities are formed to develop and operate apartment complexes designed as high-quality affordable housing for lower income tenants throughout the U.S. To fully utilize the available tax credits, each of these entities must meet the regulatory affordable housing requirements for a 15-year minimum compliance period. In addition to affordable housing projects, the Company invests in small business investment companies and new market tax credit projects that qualify for CRA consideration, as well as eligible projects that qualify for renewable energy and historic tax credits. Investments in renewable energy tax credits help promote the development of renewable energy sources, and investments in historic tax credits promote the rehabilitation of historic buildings and economic revitalization of the surrounding areas. For the Company’s accounting policies on tax credit investments, see Note 1 — Summary of Significant Accounting Policies — Significant Accounting Policies — Securities and Investments in Qualified Affordable Housing Partnerships, Tax Credit and Other Investments, Net to the Consolidated Financial Statements in the Company’s 2022 Form 10-K. For a discussion on the Company’s impairment evaluation and monitoring process of tax credit investments, refer to Note 3 — Fair Value Measurement and Fair Value of Financial Instruments — Investments in Qualified Affordable Housing Partnerships, Tax Credit and Other Investments, Net to the Consolidated Financial Statements in this Form 10-Q.

The following table presents investments and unfunded commitments of the Company’s qualified affordable housing partnerships, tax credit, and other investments as of September 30, 2023 and December 31, 2022:

	September 30, 2023				December 31, 2022
($ in thousands)	Assets		Liabilities - Unfunded Commitments (1)		Assets		Liabilities - Unfunded Commitments (1)
Investments in qualified affordable housing partnerships, net	$	412,004	$	252,552	$	413,253	$	266,654
Investments in tax credit and other investments, net	489,555		345,072		350,003		185,797
Total	$	901,559	$	597,624	$	763,256	$	452,451

(1)Included in Accrued expenses and other liabilities on the Consolidated Balance Sheet.

Investments in tax credit and other investments, net presented in the table above include equity securities that are mutual funds with readily determinable fair values of $23.6 million and $24.0 million as of September 30, 2023 and December 31, 2022, respectively. The Company invests in these mutual funds for CRA purposes.

The following table presents additional information related to the investments in qualified affordable housing partnerships, tax credit and other investments for the three and nine months ended September 30, 2023 and 2022:

	Three Months Ended September 30,				Nine Months Ended September 30,
($ in thousands)	2023		2022		2023		2022
Investments in qualified housing partnerships, net:
Tax credits and other tax benefits recognized	$	15,660	$	13,180	$	47,058	$	38,764
Amortization expense included in income tax expense	$	11,587	$	10,431	$	34,759	$	30,498
Investments in tax credit and other investments, net:
Amortization of tax credit and other investments (1)	$	49,694	$	19,874	$	115,718	$	48,753
Unrealized losses on equity securities with readily determinable values	$	(674)	$	(1,014)	$	(682)	$	(2,958)

(1)Includes net impairment losses of $790 thousand for the three months ended September 30, 2023, and net impairment recoveries of $831 thousand for the nine months ended September 30, 2023. The activity for both periods was primarily related to historic tax credits. In comparison, there were no impairment recoveries or losses for three or nine months ended September 30, 2022.

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Variable Interest Entities

The majority of both the investments in affordable housing partnerships and tax credit and other investments discussed above are variable interest entities where the Company is a limited partner in these partnerships, and an unrelated third party is typically the general partner or managing member who has control over the significant activities of these investments. While the Company’s interest in some of the investments may exceed 50% of the outstanding equity interests, the Company does not consolidate these investments due to the general partner’s or managing member’s ability to manage the entity, which is indicative of the general partner’s or managing member’s power over the entity. The Company’s maximum exposure to loss in connection with these partnerships consists of the unamortized investment balance and any tax credits claimed that may become subject to recapture.

Other Investments

The Company acquired a 49.99% equity interest in Rayliant during the third quarter of 2023. Rayliant is an asset manager specializing in asset allocation and investment in developed and emerging markets. This investment will expand the Bank’s wealth management business and provide its customers with additional access to institutional-quality investment management products and services. The investment in Rayliant is accounted for under the equity method of accounting and is included in Other assets on the Consolidated Balance Sheet. The Company paid $94.7 million in cash and granted PRSUs that are contingently issuable at vesting. The PRSUs vest on September 1, 2028 into a variable number of the Company’s shares of common stock, ranging from 20% to 200% of the 349,138 shares initially underlying such PRSUs, based on Rayliant’s achievement of certain financial performance targets during the future performance period. For additional information related to these equity contracts accounted for as derivative liability, refer to Note 3 — Fair Value Measurement and Fair Value of Financial Instruments and Note 6 — Derivatives to the Consolidated Financial Statements in this Form 10-Q. The carrying value of the Company's investment in Rayliant was $110.9 million as of September 30, 2023, in which $100.7 million comprised of equity method goodwill.

The Company also held equity securities without readily determinable fair values totaling $148.0 million and $36.5 million as of September 30, 2023 and December 31, 2022, respectively. These equity securities without readily determinable fair values are included in Other Assets on the Consolidated Balance Sheet.

Note 9 — Goodwill

Total goodwill was $465.7 million as of both September 30, 2023 and December 31, 2022. The Company’s goodwill impairment test is performed annually, as of December 31, or more frequently as events occur or circumstances change that would more-likely-than-not reduce the fair value of a reporting unit below its carrying value. Based on the Company’s annual goodwill impairment test as of December 31, 2022, there was no impairment. Additional information pertaining to the Company’s accounting policy for goodwill is summarized in Note 1 — Summary of Significant Accounting Policies — Significant Accounting Policies — Goodwill to the Consolidated Financial Statements in the Company’s 2022 Form 10-K. The Company performed an analysis of goodwill during the third quarter of 2023 that consisted of a qualitative assessment to determine if it is more likely than not that the carrying values of each reporting unit exceeded their estimated fair values. The results of this analysis indicated that no impairment of goodwill existed as of September 30, 2023.

Note 10 — Short-Term Borrowings and Long-Term Debt

Short-Term Borrowings — Bank Term Funding Program

As of September 30, 2023, the Company’s short-term borrowings consisted of funds from the Bank Term Funding Program (“BTFP”). In March 2023, the Federal Reserve announced the creation of the BTFP, which was designed to provide additional liquidity to U.S. depository institutions. The advances will be limited to the par value of eligible collateral pledged by the borrower, for a term of up to one year. U.S. federally insured depository institutions can request advances under the BTFP until at least March 11, 2024.

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The Company pledged eligible U.S. government agency and U.S. government-sponsored enterprise debt and mortgage-backed securities, and U.S. Treasury securities as collateral for the borrowings under the BTFP. As of September 30, 2023, the carrying amount of the Company’s pledged securities to the BTFP totaled $4.34 billion with a remaining borrowing capacity of $238.3 million. In comparison, there were no short-term borrowings as of December 31, 2022. The following table presents details of the Company’s short-term borrowings as of September 30, 2023.

			September 30, 2023
($ in thousands)	Interest Rate	Maturity Date	Amount
Short-term borrowings	4.37%	3/19/2024	$	4,500,000

Long-Term Debt — Junior Subordinated Debt

Long-term debt totaled $148.2 million as of September 30, 2023 and $148.0 million as of December 31, 2022. During the third quarter of 2023, all junior subordinated debt that referenced London Interbank Offered Rate have transitioned to a Secured Overnight Financing Rate-based replacement rate plus the applicable stated margin. The junior subordinated debt had coupon interest rates ranging from 7.02% to 7.57% as of September 30, 2023 and 6.12% to 6.67% as of December 31, 2022. The junior subordinated debt had remaining maturities ranging between 11.1 years and 14.0 years as of September 30, 2023. For additional information on the junior subordinated debt, refer to Note 10 — Federal Home Loan Bank Advances and Long-Term Debt to the Consolidated Financial Statements in the Company’s 2022 Form 10-K.

Note 11 — Commitments and Contingencies

Commitments to Extend Credit — In the normal course of business, the Company provides loan commitments to customers on predetermined terms. These outstanding commitments to extend credit are not reflected in the accompanying Consolidated Financial Statements. While the Company does not anticipate losses from these transactions, commitments to extend credit are included in determining the appropriate level of allowance for unfunded credit commitments, and outstanding commercial letters of credit and standby letters of credit (“SBLCs”).

The following table presents the Company’s credit-related commitments as of September 30, 2023 and December 31, 2022:

	September 30, 2023										December 31, 2022
($ in thousands)	Expire in One Year or Less		Expire After One Year Through Three Years		Expire After Three Years Through Five Years		Expire After Five Years		Total		Total
Loan commitments	$	4,650,619	$	3,689,245	$	1,037,254	$	139,325	$	9,516,443	$	8,211,571
Commercial letters of credit and SBLCs	875,757		405,377		122,255		1,124,405		2,527,794		2,291,966
Total	$	5,526,376	$	4,094,622	$	1,159,509	$	1,263,730	$	12,044,237	$	10,503,537

Loan commitments are agreements to lend to customers provided there are no violations of any conditions established in the agreement. Commitments generally have fixed expiration dates or other termination clauses and may require commitment fees. Since many of the commitments are expected to expire without being drawn upon, the total commitment amounts do not necessarily represent future funding requirements.

Commercial letters of credit are issued to facilitate domestic and foreign trade transactions, while SBLCs are generally contingent upon the failure of the customers to perform according to the terms of the underlying contract with the third party. As a result, the total contractual amounts do not necessarily represent future funding requirements. The Company’s historical experience is that SBLCs typically expire without being funded. Additionally, in many cases, the Company holds collateral in various forms against these SBLCs. As part of its risk management activities, the Company monitors the creditworthiness of customers in conjunction with its SBLC exposure. Customers are obligated to reimburse the Company for any payment made on the customers’ behalf. If the customers fail to pay, the Company would, as applicable, liquidate the collateral and/or offset existing accounts. As of September 30, 2023, total letters of credit of $2.53 billion consisted of SBLCs of $2.50 billion and commercial letters of credit of $32.7 million. In comparison, as of December 31, 2022, total letters of credit of $2.29 billion consisted of SBLCs of $2.27 billion and commercial letters of credit of $21.6 million. As of both September 30, 2023 and December 31, 2022, substantially all SBLCs were graded as “Pass” utilizing the Bank’s internal credit risk rating system.

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The Company applies the same credit underwriting criteria to extend loans, commitments, and conditional obligations to customers. Each customer’s creditworthiness is evaluated on a case-by-case basis. Collateral and financial guarantees may be obtained based on management’s assessment of a customer’s credit risk. Collateral may include cash, accounts receivable, inventory, personal property, plant and equipment, and real estate property.

Estimated exposure to loss from these commitments is included in the allowance for unfunded credit commitments and amounted to $33.6 million and $26.2 million as of September 30, 2023 and December 31, 2022, respectively.

Guarantees — From time to time, the Company sells or securitizes single-family and multifamily residential loans with recourse in the ordinary course of business. The Company is obligated to repurchase up to the recourse component of the loans if the loans default. The following table presents the carrying amounts of loans sold or securitized with recourse and the maximum potential future payments as of September 30, 2023 and December 31, 2022:

	Maximum Potential Future Payments												Carrying Value
	September 30, 2023										December 31, 2022		September 30, 2023		December 31, 2022
($ in thousands)	Expire in One Year or Less		Expire After One Year Through Three Years		Expire After Three Years Through Five Years		Expire After Five Years		Total		Total		Total		Total
Single-family residential loans sold or securitized with recourse	$	28	$	23	$	28	$	6,013	$	6,092	$	6,781	$	6,092	$	6,781
Multifamily residential loans sold or securitized with recourse	—		—		66		14,930		14,996		14,996		19,887		21,320
Total	$	28	$	23	$	94	$	20,943	$	21,088	$	21,777	$	25,979	$	28,101

The Company’s recourse reserve related to these guarantees is included in the allowance for unfunded credit commitments and totaled $35 thousand and $37 thousand as of September 30, 2023 and December 31, 2022, respectively. The allowance for unfunded credit commitments is included in Accrued expenses and other liabilities on the Consolidated Balance Sheet. The Company continues to experience minimal losses from the single-family and multifamily residential loan portfolios sold or securitized with recourse.

Litigation — The Company is a party to various legal actions arising in the ordinary course of its business. In accordance with ASC 450, Contingencies, the Company accrues reserves for outstanding lawsuits, claims and proceedings when a loss contingency is probable and can be reasonably estimated. The Company estimates the amount of loss contingencies using current available information from legal proceedings, advice from legal counsel and available insurance coverage. Due to the inherent subjectivity of the assessments and unpredictability of the outcomes of the legal proceedings, any amounts accrued or included in this aggregate amount may not represent the ultimate loss to the Company from the legal proceedings in question. Thus, the Company’s exposure and ultimate losses may be higher, and possibly significantly more, than the amounts accrued.

While it is impossible to ascertain the ultimate resolution or range of financial liability, based on information known to the Company as of September 30, 2023, the Company does not believe there is any pending legal proceeding to which the Company is a party that, individually or in the aggregate, would reasonably be expected to have a material adverse effect on the Company’s financial condition. In light of the inherent uncertainty in legal proceedings, however, there can be no assurance that the ultimate resolution will not exceed established reserves and it is possible that the outcome of a particular matter, or a combination of matters, may be material to the Company’s financial condition for a particular period, depending upon the size of the loss and the Company’s income for that particular period.

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Note 12 — Stock Compensation Plans

Pursuant to the Company’s 2021 Stock Incentive Plan, as amended, the Company may issue stock, stock options, restricted stock, restricted stock units (“RSUs”) including performance-based RSUs, stock purchase warrants, stock appreciation rights, phantom stock and dividend equivalents to eligible employees, non-employee directors, consultants, and other service providers of the Company and its subsidiaries. The Company has granted RSUs as its primary incentive awards. There were no outstanding awards other than RSUs as of both September 30, 2023 and December 31, 2022.

The following table presents a summary of the total share-based compensation expense and the related net tax (deficiencies) benefits associated with the Company’s various employee share-based compensation plans for the three and nine months ended September 30, 2023 and 2022:

	Three Months Ended September 30,				Nine Months Ended September 30,
($ in thousands)	2023		2022		2023		2022
Stock compensation costs	$	9,495	$	12,329	$	29,934	$	29,338
Related net tax (deficiencies) benefits for stock compensation plans	$	(18)	$	1	$	8,797	$	5,269

Restricted Stock Units — RSUs are granted under the Company’s long-term incentive plan at no cost to the recipient. RSUs generally cliff vest after three years of continued employment from the date of the grant, and are authorized to settle in shares of the Company’s common stock. Dividends are accrued during the vesting period and paid at the time of vesting. While a portion of RSUs are time-based vesting awards, others vest subject to the attainment of specified performance goals, referred to as “performance-based RSUs.” Performance-based RSUs are granted annually upon approval by the Company’s Compensation Committee based on the performance in the year prior to the grant date of the award. The number of awards that vest can range from zero percent to a maximum of 200% of the granted number of awards based on the Company’s achievement of specified performance criteria over a performance period of three years. For information on accounting on stock-based compensation plans, see Note 1 — Summary of Significant Accounting Policies — Significant Accounting Policies — Stock-Based Compensation to the Consolidated Financial Statements of the Company’s 2022 Form 10-K.

The following table presents a summary of the activities for the Company’s time-based and performance-based RSUs that will be settled in shares for the nine months ended September 30, 2023. The number of performance-based RSUs stated below reflects the number of awards granted on the grant date.

	Time-Based RSUs			Performance-Based RSUs
	Shares	Weighted-Average Grant Date Fair Value		Shares	Weighted-Average Grant Date Fair Value
Outstanding, January 1, 2023	1,296,866	$	60.77	332,510	$	60.40
Granted	500,180	73.73		96,271	57.50
Vested	(522,029)	40.79		(152,558)	39.39
Forfeited	(53,379)	74.00		—	—
Outstanding, September 30, 2023	1,221,638	$	74.04	276,223	$	70.99

As of September 30, 2023, there were $32.2 million of unrecognized compensation costs related to unvested time-based RSUs expected to be recognized over a weighted-average period of 1.9 years, and $17.9 million of unrecognized compensation costs related to unvested performance-based RSUs expected to be recognized over a weighted-average period of 1.9 years.

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Note 13 — Stockholders’ Equity and Earnings Per Share

The following table presents the basic and diluted EPS calculations for the three and nine months ended September 30, 2023 and 2022. For more information on the calculation of EPS, see Note 1 — Summary of Significant Accounting Policies — Significant Accounting Policies — Earnings Per Share to the Consolidated Financial Statements in the Company’s 2022 Form 10-K.

($ and shares in thousands, except per share data)	Three Months Ended September 30,				Nine Months Ended September 30,
	2023		2022		2023		2022
Basic:
Net income	$	287,738	$	295,339	$	922,208	$	791,320
Weighted-average number of shares outstanding	141,485		140,917		141,356		141,453
Basic EPS	$	2.03	$	2.10	$	6.52	$	5.59
Diluted:
Net income	$	287,738	$	295,339	$	922,208	$	791,320
Weighted-average number of shares outstanding	141,485		140,917		141,356		141,453
Add: Dilutive impact of unvested RSUs	637		1,094		688		1,148
Diluted weighted-average number of shares outstanding	142,122		142,011		142,044		142,601
Diluted EPS	$	2.02	$	2.08	$	6.49	$	5.55

For the three and nine months ended September 30, 2023, approximately 575 thousand and 350 thousand weighted-average shares of anti-dilutive RSUs, respectively, were excluded from the diluted EPS computations. In comparison, approximately 61 thousand and 58 thousand weighted-average shares of anti-dilutive RSUs were excluded from the diluted EPS computations for the three and nine months ended September 30, 2022, respectively.

Note 14 — Accumulated Other Comprehensive Income (Loss)

The following tables present the changes in the components of AOCI balances for the three and nine months ended September 30, 2023 and 2022:

($ in thousands)	Debt Securities (1)		Cash Flow Hedges		Foreign Currency Translation Adjustments (2)		Total
Balance, July 1, 2022	$	(554,781)	$	(30,846)	$	(15,021)	$	(600,648)
Net unrealized losses arising during the period	(161,445)		(34,423)		(7,926)		(203,794)
Amounts reclassified from AOCI	3,256		1,154		—		4,410
Changes, net of tax	(158,189)		(33,269)		(7,926)		(199,384)
Balance, September 30, 2022	$	(712,970)	$	(64,115)	$	(22,947)	$	(800,032)
Balance, July 1, 2023	$	(681,536)	$	(74,805)	$	(25,591)	$	(781,932)
Net unrealized (losses) gains arising during the period	(72,691)		(44,347)		3,710		(113,328)
Amounts reclassified from AOCI	2,870		17,013		—		19,883
Changes, net of tax	(69,821)		(27,334)		3,710		(93,445)
Balance, September 30, 2023	$	(751,357)	$	(102,139)	$	(21,881)	$	(875,377)

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($ in thousands)	Debt Securities (1)		Cash Flow Hedges		Foreign Currency Translation Adjustments (2)		Total
Balance, January 1, 2022	$	(85,703)	$	257	$	(4,935)	$	(90,381)
Net unrealized losses arising during the period	(635,664)		(63,232)		(18,012)		(716,908)
Amounts reclassified from AOCI	8,397		(1,140)		—		7,257
Changes, net of tax	(627,267)		(64,372)		(18,012)		(709,651)
Balance, September 30, 2022	$	(712,970)	$	(64,115)	$	(22,947)	$	(800,032)
Balance, January 1, 2023	$	(694,815)	$	(49,531)	$	(21,283)	$	(765,629)
Net unrealized losses arising during the period	(72,034)		(91,468)		(598)		(164,100)
Amounts reclassified from AOCI	15,492		38,860		—		54,352
Changes, net of tax	(56,542)		(52,608)		(598)		(109,748)
Balance, September 30, 2023	$	(751,357)	$	(102,139)	$	(21,881)	$	(875,377)

(1)Includes after-tax unamortized losses related to AFS debt securities that were transferred to HTM in 2022.

(2)Represents foreign currency translation adjustments related to the Company’s net investment in non-U.S. operations, including related hedges. The functional currency and reporting currency of the Company’s foreign subsidiary is RMB and USD, respectively.

The following tables present the components of other comprehensive income (loss), reclassifications to net income and the related tax effects for the three and nine months ended September 30, 2023 and 2022:

	Three Months Ended September 30,
	2023						2022
($ in thousands)	Before-Tax		Tax Effect		Net-of-Tax		Before-Tax		Tax Effect		Net-of-Tax
Debt securities:
Net unrealized losses on AFS debt securities arising during the period	$	(103,183)	$	30,492	$	(72,691)	$	(229,246)	$	67,801	$	(161,445)
Reclassification adjustments:
Amortization of unrealized losses on transferred debt securities (1)	4,075		(1,205)		2,870		4,623		(1,367)		3,256
Net change	(99,108)		29,287		(69,821)		(224,623)		66,434		(158,189)
Cash flow hedges:
Net unrealized losses arising during the period	(62,715)		18,368		(44,347)		(48,325)		13,902		(34,423)
Net realized losses reclassified into net income (2)	24,059		(7,046)		17,013		1,619		(465)		1,154
Net change	(38,656)		11,322		(27,334)		(46,706)		13,437		(33,269)
Foreign currency translation adjustments, net of hedges:
Net unrealized gains (losses) arising during the period	3,728		(18)		3,710		(6,676)		(1,250)		(7,926)
Net change	3,728		(18)		3,710		(6,676)		(1,250)		(7,926)
Other comprehensive loss	$	(134,036)	$	40,591	$	(93,445)	$	(278,005)	$	78,621	$	(199,384)

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	Nine Months Ended September 30,
	2023							2022
($ in thousands)	Before-Tax			Tax Effect		Net-of-Tax		Before-Tax		Tax Effect		Net-of-Tax
Debt securities:
Net unrealized losses on AFS debt securities arising during the period	$	(102,262)		$	30,228	$	(72,034)	$	(742,132)	$	219,459	$	(522,673)
Unrealized losses on debt securities transferred from AFS to HTM	—			—		—		(160,416)		47,425		(112,991)
Reclassification adjustments:
Net realized losses (gains) on AFS debt securities reclassified into net income (3)	10,000		(4)	(2,956)		7,044		(1,306)		386		(920)
Amortization of unrealized losses on transferred debt securities (1)	11,994			(3,546)		8,448		13,228		(3,911)		9,317
Net change	(80,268)			23,726		(56,542)		(890,626)		263,359		(627,267)
Cash flow hedges:
Net unrealized losses arising during the period	(129,329)			37,861		(91,468)		(88,771)		25,539		(63,232)
Net realized losses (gains) reclassified into net income (2)	54,955			(16,095)		38,860		(1,601)		461		(1,140)
Net change	(74,374)			21,766		(52,608)		(90,372)		26,000		(64,372)
Foreign currency translation adjustments, net of hedges:
Net unrealized gains (losses) arising during the period	247			(845)		(598)		(16,276)		(1,736)		(18,012)
Net change	247			(845)		(598)		(16,276)		(1,736)		(18,012)
Other comprehensive loss	$	(154,395)		$	44,647	$	(109,748)	$	(997,274)	$	287,623	$	(709,651)

(1)Represents unrealized losses amortized over the remaining lives of securities that were transferred from the AFS to HTM portfolio in 2022.

(2)Pre-tax amounts related to cash flow hedges on variable rate loans and long-term borrowings, where applicable, were reported in Interest and dividend income and in Interest expense, respectively, on the Consolidated Statement of Income.

(3)Pre-tax amounts were reported in Net (losses) gains on AFS debt securities on the Consolidated Statement of Income.

(4)Represents the full write-off of an impaired subordinated debt security during the first quarter of 2023.

Note 15 — Business Segments

The Company organizes its operations into three reportable operating segments: (1) Consumer and Business Banking; (2) Commercial Banking; and (3) Other. These segments are defined by the type of customers served and the related products and services provided. The segments reflect how financial information is currently evaluated by management. Operating segment results are based on the Company’s internal management reporting process, which reflects assignments and allocations of certain balance sheet and income statement items. The information presented is not indicative of how the segments would perform if they operated as independent entities.

The Consumer and Business Banking segment primarily provides financial products and services to consumer and commercial customers through the Company’s domestic branch network and digital banking platform. This segment offers consumer and commercial deposits, mortgage and home equity loans, and other products and services. It also originates commercial loans for small- and medium-sized enterprises through the Company’s branch network. Other products and services provided by this segment include wealth management, treasury management, interest rate risk hedging and foreign exchange services.

The Commercial Banking segment primarily generates commercial loan and deposit products. Commercial loan products include CRE lending, construction financing, commercial business lending, working capital lines of credit, trade finance, letters of credit, affordable housing lending, asset-based lending, asset-backed finance, project finance and equipment financing. Commercial deposit products and other financial services include treasury management, foreign exchange services and interest rate and commodity risk hedging.

The remaining centralized functions, including the corporate treasury activities of the Company and eliminations of inter-segment amounts, have been aggregated and included in the Other segment, which provides broad administrative support to the two core segments, namely the Consumer and Business Banking and the Commercial Banking segments.

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The Company utilizes an internal reporting process to measure the performance of the three operating segments within the Company. The internal reporting process derives operating segment results by utilizing allocation methodologies for revenues and expenses. Net interest income of each segment represents the difference between actual interest earned on assets and interest incurred on liabilities of the segment, adjusted for funding charges or credits through the Company’s internal funds transfer pricing (“FTP”) process. Noninterest income and noninterest expense directly attributable to a business segment are assigned to that segment. Indirect costs, including technology-related costs and corporate overhead, are allocated based on a segment’s estimated usage using factors including but not limited to, full-time equivalent employees, net interest income, and loan and deposit volume. Charge-offs are recorded to the segment directly associated with the respective loans charged off, and provision for credit losses is recorded to the segments based on the related loans for which allowances are evaluated. The Company’s internal reporting process utilizes a full-allocation methodology. Under this methodology, corporate and indirect expenses incurred by the Other segment are allocated to the Consumer and Business Banking and the Commercial Banking segments, except certain corporate treasury-related expenses and insignificant unallocated expenses.

The corporate treasury function within the Other segment is responsible for the Company’s liquidity and interest rate management and the internal FTP process. The FTP process is formulated with the goal of encouraging loan and deposit growth that is consistent with the Company’s overall profitability objectives, as well as providing a reasonable and consistent basis for the measurement of its business segments’ net interest margins and profitability. The FTP process charges a cost to fund loans (“FTP charges for loans”) and allocates credits for funds provided from deposits (“FTP credits for deposits”) using internal FTP rates. FTP charges for loans are determined based on a matched cost of funds, which is tied to the pricing and term characteristics of the loans. FTP credits for deposits are based on matched funding credit rates, which are tied to the implied or stated maturity of the deposits. FTP credits for deposits reflect the long-term value generated by the deposits. The net spread between the total internal FTP charges and credits is recorded as part of net interest income in the Other segment. The FTP process transfers the corporate interest rate risk exposure to the treasury function within the Other segment, where such exposures are centrally managed. The Company’s internal FTP assumptions and methodologies are reviewed at least annually to ensure that the process is reflective of current market conditions.

The following tables present the operating results and other key financial measures for the individual operating segments as of and for the three and nine months ended September 30, 2023 and 2022:

($ in thousands)	Consumer and Business Banking		Commercial Banking		Other		Total
Three Months Ended September 30, 2023
Net interest income before provision for credit losses	$	315,409	$	242,345	$	13,059	$	570,813
Provision for credit losses	1,633		40,367		—		42,000
Noninterest income	25,132		43,672		7,948		76,752
Noninterest expense	106,626		87,556		57,832		252,014
Segment income (loss) before income taxes	232,282		158,094		(36,825)		353,551
Segment net income	$	164,051	$	110,182	$	13,505	$	287,738
As of September 30, 2023
Segment assets	$	18,935,452	$	34,438,787	$	14,915,219	$	68,289,458

($ in thousands)	Consumer and Business Banking		Commercial Banking		Other		Total
Three Months Ended September 30, 2022
Net interest income before provision for credit losses	$	326,411	$	222,996	$	2,402	$	551,809
Provision for credit losses	8,974		18,026		—		27,000
Noninterest income (loss)	30,819		48,641		(3,908)		75,552
Noninterest expense	104,005		81,386		30,582		215,973
Segment income (loss) before income taxes	244,251		172,225		(32,088)		384,388
Segment net income (loss)	$	173,982	$	122,869	$	(1,512)	$	295,339
As of September 30, 2022
Segment assets	$	17,002,000	$	32,836,381	$	12,737,680	$	62,576,061

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($ in thousands)	Consumer and Business Banking		Commercial Banking		Other		Total
Nine Months Ended September 30, 2023
Net interest income before provision for credit losses	$	927,173	$	742,108	$	68,139	$	1,737,420
Provision for credit losses	22,169		65,831		—		88,000
Noninterest income	78,254		129,809		7,298		215,361
Noninterest expense	327,476		263,137		141,637		732,250
Segment income (loss) before income taxes	655,782		542,949		(66,200)		1,132,531
Segment net income	$	463,151	$	383,669	$	75,388	$	922,208
As of September 30, 2023
Segment assets	$	18,935,452	$	34,438,787	$	14,915,219	$	68,289,458

($ in thousands)	Consumer and Business Banking		Commercial Banking		Other		Total
Nine Months Ended September 30, 2022
Net interest income (loss) before provision for credit losses	$	823,998	$	662,037	$	(45,661)	$	1,440,374
Provision for credit losses	14,976		33,524		—		48,500
Noninterest income	84,402		145,750		3,587		233,739
Noninterest expense	294,395		235,804		72,084		602,283
Segment income (loss) before income taxes	599,029		538,459		(114,158)		1,023,330
Segment net income (loss)	$	426,695	$	384,237	$	(19,612)	$	791,320
As of September 30, 2022
Segment assets	$	17,002,000	$	32,836,381	$	12,737,680	$	62,576,061

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ITEM 2. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

		Page
Overview		65
Financial Review		67
Results of Operations		68
	Net Interest Income	68
	Noninterest Income	74
	Noninterest Expense	75
	Income Taxes	76
	Operating Segment Results	76
Balance Sheet Analysis		81
	Debt Securities	81
	Loan Portfolio	83
	Foreign Outstandings	89
	Capital	89
	Deposits and Other Sources of Funding	90
	Regulatory Capital and Ratios	92
Risk Management		93
	Credit Risk Management	94
	Liquidity Risk Management	97
	Market Risk Management	100
Critical Accounting Policies and Estimates		105
Reconciliation of GAAP to Non-GAAP Financial Measures		105

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Overview

The following discussion provides information about the results of operations, financial condition, liquidity and capital resources of East West Bancorp, Inc. (referred to herein on an unconsolidated basis as “East West” and on a consolidated basis as the “Company,” “we” or “EWBC”) and its subsidiaries, including its subsidiary bank, East West Bank and its subsidiaries (referred to herein as “East West Bank” or the “Bank”). This information is intended to facilitate the understanding and assessment of significant changes and trends related to the Company’s results of operations and financial condition. This discussion and analysis should be read in conjunction with the Consolidated Financial Statements and the accompanying notes presented elsewhere in this report, and the Company’s Annual Report on Form 10-K for the year ended December 31, 2022, filed with the United States (“U.S.”) Securities and Exchange Commission (“SEC”) on February 27, 2023 (the “Company’s 2022 Form 10-K”).

Organization and Strategy

East West is a bank holding company incorporated in Delaware on August 26, 1998 and is registered under the Bank Holding Company Act of 1956, as amended. The Company commenced business on December 30, 1998 when, pursuant to a reorganization, it acquired all of the voting stock of the Bank, which became its principal asset. The Bank is an independent commercial bank headquartered in California that focuses on the financial service needs of individuals and businesses that operate in both the U.S. and Asia. Through over 120 locations in the U.S. and Asia, the Company provides a full range of consumer and commercial products and services through the following three business segments: (1) Consumer and Business Banking and (2) Commercial Banking, with the remaining operations recorded in (3) Other. The Company’s principal activity is lending to and accepting deposits from businesses and individuals. We are committed to enhancing long-term stockholder value by growing loans, deposits and revenue, improving profitability, and investing for the future while managing risks, expenses and capital. Our business model is built on customer loyalty and engagement, understanding our customers’ financial goals, and meeting our customers’ financial needs through our diverse products and services. We expect our relationship-focused business model to continue generating organic growth from existing customers and to expand our targeted customer bases. As of September 30, 2023, the Company had $68.29 billion in assets and approximately 3,200 full-time equivalent employees. For additional information on our strategy, and the products and services provided by the Bank, see Item 1. Business — Strategy and Banking Services in the Company’s 2022 Form 10-K.

Current Developments

Economic Developments

Recent external data indicate that the pace of inflation has slowed steadily and the volatility in the banking industry earlier in the year has abated. However, inflation remains above the Board of Governors of the Federal Reserve System’s (“Federal Reserve”) 2% target, which could signal a potential interest rate hike later this year. The higher interest rate environment continues to negatively impact the market value of bank-held securities. Additionally, the commercial real estate (“CRE”) market is under pressure due to tighter credit conditions and decreased demand. These factors have adversely affected economic activity and the banking sector. Despite these concerns, fears of a potential recession in 2023 are falling, bolstered by the Federal Reserve’s commitment to steering the economy towards a “soft landing”, a scenario in which inflation retreats without a sharp uptick in unemployment. However, factors such as the economic impacts of unrest, wars, and acts of terrorism could lead to higher oil prices and increased inflationary pressures, along with the possibility that the Federal Reserve will maintain high interest rates longer than anticipated. It is also uncertain whether there will be a U.S. government shutdown in November 2023 or subsequently, which could negatively impact the economy and inflation domestically. The Company is actively monitoring changes in economic and industry conditions and their impacts on the Company’s business, customers, employees, communities and markets.

Further discussion of the potential impacts on the Company’s business due to interest rate hikes has been provided in Item 1A. — Risk Factors — Risks Related to Financial Matters in the Company’s 2022 Form 10-K.

Recent Bank Failures and Potential Regulatory Reforms

Following the bank failures in March 2023, Congress and federal regulatory agencies are considering potential changes to the laws and regulations that apply to banks. On April 28, 2023, the Federal Reserve and the Federal Deposit Insurance Corporation (“FDIC”) issued reports on the failures of Silicon Valley Bank and Signature Bank, respectively, identifying potential causes that the federal banking agencies may seek to address through changes to their supervisory and regulatory policies.

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On July 27, 2023, the Federal Reserve, FDIC, and Office of the Comptroller of the Currency (together, the “Agencies”) jointly released a proposed rule to implement the international capital standards issued by the Basel Committee on Banking Supervision and known as “Basel III Endgame.” The Basel III Endgame proposal would revise the capital framework applicable to large banking organizations with $100 billion or more in total consolidated assets or with significant trading activity and, if finalized, would likely result in meaningfully increased capital requirements for those organizations. In addition, on August 29, 2023, the FDIC released a proposed rule that would require covered insured depository institutions (“IDIs”) to develop and submit detailed plans demonstrating how they could be resolved in an orderly and timely manner in the event of receivership. IDIs with total assets of $100 billion or more would be required to submit full resolution plans, and IDIs with total assets between $50 billion and $100 billion, including the Bank, would be required to submit more limited informational filings. Under the proposal, if the FDIC deemed a resolution plan or informational filing not credible and the IDI fails to resubmit a credible plan, the IDI could become subject to an enforcement action. The Company is evaluating the impact of this proposal.

On August 29, 2023, the Agencies jointly released a proposed rule that would require bank holding companies and non-consolidated banks with total assets of $100 billion or more to issue and maintain minimum amounts of long-term debt. The Company has total consolidated assets of less than $100 billion and does not have significant trading activity, and therefore would not be subject to the Basel III Endgame requirements or the long-term debt requirements if they are finalized as proposed. However, by imposing additional costs on banking organizations with $100 billion or more in total consolidated assets, these rule proposals could reduce the benefits of growth beyond that size for a banking organization that has less than $100 billion in total consolidated assets, such as the Company.

FDIC Special Assessment and Uninsured Deposits

On May 11, 2023, the FDIC released a proposed rule that would impose a special deposit insurance assessment on banks in order to recover losses that the FDIC's Deposit Insurance Fund (“DIF”) has incurred in the receiverships of failed institutions in 2023. The proposed rule would impose the special assessment for eight quarterly assessment periods beginning with the first quarter of 2024 assessment period, subject to adjustments if the total amount collected is insufficient to cover the DIF’s costs. Each quarterly special assessment would be equal to 3.13 basis points (“bps”), or 0.0313% of a bank’s estimated uninsured deposits that exceeded $5 billion as of December 31, 2022. The estimated impact of the special assessment is not expected to be material to the Company.

On July 24, 2023, the FDIC issued Financial Institution Letter (“FIL”) 37-2023 — Estimated Uninsured Deposits Reporting Expectations, which clarified the reporting of an insured depository institution’s estimated uninsured deposits in the Call Report Schedule RC-O, Memorandum item 2 (“RC-OM item 2”). This FIL specified that uninsured deposits reported in RC-OM item 2 should include the deposit balances in excess of the FDIC limit that have been collateralized by pledged assets, and include all deposits of subsidiaries. The Company revised its calculation of RC-OM item 2 and resubmitted its December 31, 2022 and March 31, 2023 Call Reports to comply with the FIL during the third quarter of 2023.

Community Reinvestment Act Reform

On October 24, 2023, the Agencies issued a final rule revising their framework for evaluating banks’ records of community reinvestment under the Community Reinvestment Act. Under the revised framework, banks with assets of at least $2 billion, such as the Bank, are considered large banks and their retail lending, retail services and products, community development financing, and community development services will be subject to periodic evaluation. Depending on a large bank’s geographic distribution of lending, the evaluation of retail lending may include assessment areas in which the bank extends loans but does not operate any deposit-taking facilities, in addition to assessment areas in which the bank has deposit-taking facilities. Certain provisions of the final rule will apply beginning January 1, 2026, and the remaining provisions will apply beginning January 1, 2027. The Company is evaluating the impact of the final rule.

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Climate Accountability

In October 2023, California Governor Gavin Newsom signed into law Senate Bill 253, the Climate Corporate Data Accountability Act (“CCDAA”) and Senate Bill 261, the Climate-Related Financial Risk Act (“CRFRA”). The CCDAA is applicable to U.S.-organized entities that do business in California with annual revenue in excess of $1 billion. Subject to the adoption of implementing regulations by the California Air Resources Board, these entities will need to file annual reports publicly disclosing their direct greenhouse gas (“GHG”) emissions from operations (“Scope 1 emissions”), indirect GHG emissions from energy use (“Scope 2 emissions”) and indirect upstream and downstream supply-chain GHG emissions (“Scope 3 emissions”). The reporting requirements related to Scope 1 and 2 emissions will begin in 2026, while the reporting requirements of Scope 3 emissions will begin in 2027. The CRFRA requires U.S.-organized entities that do business in California, with annual revenues over $500 million to prepare biennial reports disclosing climate-related financial risk and the measures they have adopted to reduce and adapt to that risk. The initial round of the climate risk disclosure reports will be due by January 1, 2026. The Company is a reporting entity under both laws and is reviewing them in preparation for compliance.

Financial Review

	Three Months Ended September 30,						Nine Months Ended September 30,
($ and shares in thousands, except per share, and ratio data)	2023			2022			2023			2022
Summary of operations:
Net interest income before provision for credit losses	$	570,813		$	551,809		$	1,737,420		$	1,440,374
Noninterest income	76,752			75,552			215,361			233,739
Total revenue	647,565			627,361			1,952,781			1,674,113
Provision for credit losses	42,000			27,000			88,000			48,500
Noninterest expense	252,014			215,973			732,250			602,283
Income before income taxes	353,551			384,388			1,132,531			1,023,330
Income tax expense	65,813			89,049			210,323			232,010
Net income	$	287,738		$	295,339		$	922,208		$	791,320
Per share:
Basic earnings	$	2.03		$	2.10		$	6.52		$	5.59
Diluted earnings	$	2.02		$	2.08		$	6.49		$	5.55
Dividends declared	$	0.48		$	0.40		$	1.44		$	1.20
Weighted-average number of shares outstanding:
Basic	141,485			140,917			141,356			141,453
Diluted	142,122			142,011			142,044			142,601
Performance metrics:
Return on average assets (“ROA”)	1.66		%	1.86		%	1.83		%	1.70		%
Return on average common equity (“ROE”)	17.28		%	20.30		%	19.23		%	18.35		%
Return on average tangible common equity (“TCE”) (1)	18.65		%	22.16		%	20.80		%	20.04		%
Common dividend payout ratio	23.88		%	19.33		%	22.31		%	21.75		%
Net interest margin	3.48		%	3.68		%	3.66		%	3.27		%
Efficiency ratio (2)	38.92		%	34.43		%	37.50		%	35.98		%
Adjusted efficiency ratio (1)	31.18		%	31.18		%	31.15		%	32.98		%

At period end:	September 30, 2023		December 31, 2022
Total assets	$	68,289,458	$	64,112,150
Total loans	$	50,911,946	$	48,228,074
Total deposits	$	55,087,031	$	55,967,849
Common shares outstanding at period-end	141,486		140,948
Book value per share	$	46.62	$	42.46
Tangible book value per share (1)	$	43.29	$	39.10

(1)For additional information regarding the reconciliation of these non-U.S. Generally Accepted Accounting Principles (“GAAP”) financial measures, refer to Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations (“MD&A”) — Reconciliation of GAAP to Non-GAAP Financial Measures in this Quarterly Report on Form 10-Q (this “Form 10-Q”).

(2)Efficiency ratio is calculated as noninterest expense divided by total revenue.

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The Company’s third quarter 2023 net income was $287.7 million, a decrease of $7.6 million or 3%, compared with third quarter 2022 net income of $295.3 million. The decrease was primarily due to higher noninterest expense and provision for credit losses, partially offset by lower income tax expense and higher net interest income during the quarter. Net income for the first nine months of 2023 was $922.2 million, an increase of $130.9 million or 17% compared with first nine months of 2022 net income of $791.3 million. The increase was primarily due to higher net interest income, partially offset by higher noninterest expense and provision for credit losses. Noteworthy items about the Company’s performance for the third quarter and first nine months of 2023 included:

•Net interest income growth and net interest margin. Third quarter 2023 net interest income before provision for credit losses was $570.8 million, an increase of $19.0 million or 3% from the third quarter of 2022. Third quarter 2023 net interest margin of 3.48% was down 20 bps year-over-year. For the first nine months of 2023, net interest income before provision for credit losses was $1.74 billion, an increase of $297.0 million or 21% year-over-year. The net interest margin for the first nine months of 2023 was 3.66%, up 39 bps year-over-year.

•Profitability ratios. Third quarter 2023 ROA, ROE and the return on average TCE of 1.66%, 17.28% and 18.65%, respectively, were down year-over-year by 20 bps, 302 bps and 351 bps, respectively. For the first nine months of 2023, ROA, ROE and the return on average TCE of 1.83%, 19.23% and 20.80%, respectively, all expanded year-over-year by 13 bps, 88 bps and 76 bps, respectively. Return on average TCE is a non-GAAP financial measure. For additional details, see the reconciliation of non-GAAP financial measures presented under Item 2. MD&A — Reconciliation of GAAP to Non-GAAP Financial Measures in this Form 10-Q.

•Asset growth. Total assets reached $68.29 billion, an increase of $4.18 billion or 7% from December 31, 2022, primarily driven by a $2.68 billion or 6% increase in total loans, and a $1.08 billion or 31% increase in cash and cash equivalents. The increase in cash and cash equivalents was primarily funded with borrowings from the Bank Term Funding Program (“BTFP”).

•Loan growth. Total loans were $50.91 billion as of September 30, 2023, an increase of $2.68 billion or 6% from $48.23 billion as of December 31, 2022. This was primarily driven by growth in CRE and residential mortgage loan segments.

•Strong capital levels. Stockholders’ equity was $6.60 billion or $46.62 per share as of September 30, 2023, both up 10% from $5.98 billion or $42.46 per share as of December 31, 2022. Tangible book value per share of $43.29 as of September 30, 2023, increased $4.19 or 11% from $39.10 as of December 31, 2022. Tangible book value per share is a non-GAAP financial measure. For additional details, see the reconciliation of non-GAAP financial measures presented under Item 2. MD&A - Reconciliation of GAAP to non-GAAP Financial Measures in this Form 10-Q.

Results of Operations

Net Interest Income

The Company’s primary source of revenue is net interest income, which is the interest income earned on interest-earning assets less interest expense paid on interest-bearing liabilities. Net interest margin is the ratio of net interest income to average interest-earning assets. Net interest income and net interest margin are impacted by several factors, including changes in average balances and the composition of interest-earning assets and funding sources, market interest rate fluctuations and the slope of the yield curve, repricing characteristics and maturity of interest-earning assets and interest-bearing liabilities, the volume of noninterest-bearing sources of funds and asset quality.

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The increases in net interest income in the third quarter and the first nine months of 2023, and the increase in net interest margin for the first nine months of 2023, compared with the same prior year periods primarily reflected higher loan yields and increased loan volume, partially offset by a higher cost of interest-bearing deposits. The decrease in net interest margin for the third quarter of 2023, compared with the same prior year period was primarily driven by a higher rate of increase in the cost of interest-bearing deposits, which has more than offset expanding interest-earning asset yields. The changes in yield and rate reflected rising benchmark interest rates.

Average interest-earning assets were $65.05 billion for the third quarter of 2023, an increase of $5.57 billion or 9% from $59.48 billion for the third quarter of 2022. For the first nine months of 2023, the average interest-earning assets were $63.55 billion, an increase of $4.60 billion or 8% from $58.95 billion for the first nine months of 2022. The increases in average interest-earning assets in both periods primarily reflected loan growth, and higher interest-bearing cash and deposits with banks, partially offset by decreases in assets purchased under resale agreements and available-for-sale (“AFS”) debt securities.

The yield on average interest-earning assets for the third quarter of 2023 was 5.87%, an increase of 168 bps from 4.19% for the third quarter of 2022. The yield on average interest-earning assets for the first nine months of 2023 was 5.69%, an increase of 215 bps from 3.54% for the first nine months of 2022. The year-over-year increases in the yield on average interest-earning assets primarily resulted from rising benchmark interest rates.

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The average loan yield for the third quarter of 2023 was 6.51%, an increase of 176 bps from 4.75% for the third quarter of 2022. The average loan yield for the first nine months of 2022 was 6.33%, an increase of 220 bps from 4.13% for the first nine months of 2022. The changes in the average loan yield reflected the loan portfolio’s sensitivity to rising benchmark interest rates. Approximately 59% and 62% of loans held-for-investment were variable-rate as of September 30, 2023 and 2022, respectively.

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Deposits are an important source of funds and impact both net interest income and net interest margin. Average deposits were $55.20 billion for the third quarter of 2023, which increased $1.15 billion or 2% from $54.05 billion for the third quarter of 2022. For the first nine months of 2023, average deposits were $54.81 billion, an increase of $744.2 million or 1% from $54.07 billion for the first nine months of 2022. Average noninterest-bearing deposits were $16.30 billion for the third quarter of 2023, a decrease of $6.12 billion or 27% from $22.42 billion for the third quarter of 2022. For the first nine months of 2023, average noninterest-bearing deposits were $17.63 billion, a decrease of $5.61 billion or 24% from $23.24 billion for the first nine months of 2022. Average noninterest-bearing deposits made up 30% and 41% of average deposits for the third quarters of 2023 and 2022, respectively, and 32% and 43% for the first nine months of 2023 and 2022, respectively.

The average cost of deposits was 2.43% for the third quarter of 2023, a 192 bps increase from 0.51% for the third quarter of 2022. The average cost of interest-bearing deposits was 3.45% for the third quarter of 2023, a 259 bps increase from 0.86% for the third quarter of 2022. The average cost of deposits was 2.06% for the first nine months of 2023, a 180 bps increase from 0.26% for the first nine months of 2022. The average cost of interest-bearing deposits was 3.03% for the first nine months of 2023, a 258 bps increase from 0.45% for the first nine months of 2022. The year-over-year increases primarily reflected higher rates paid on time deposits, money market and checking deposits in response to the rising interest rate environment.

The average cost of funds calculation includes deposits, short-term borrowings, Federal Home Loan Bank (“FHLB”) advances, assets sold under repurchase agreements (“repurchase agreements”), and long-term debt. For the third quarter of 2023, the average cost of funds was 2.59%, a 204 bps increase from 0.55% for the third quarter of 2022. For the first nine months of 2023, the average cost of funds was 2.21%, a 192 bps increase from 0.29% for the first nine months of 2022. The increases in both periods were mainly driven by the increased cost of deposits discussed above.

The Company utilizes various tools to manage interest rate risk. Refer to the Interest Rate Risk Management section of Item 2. MD&A — Risk Management — Market Risk Management in this Form 10-Q.

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The following table presents the interest spread, net interest margin, average balances, interest income and expense, and the average yield/rate by asset and liability component for the third quarters of 2023 and 2022:

	Three Months Ended September 30,
	2023						2022
($ in thousands)	Average Balance		Interest		Average Yield/ Rate (1)		Average Balance		Interest		Average Yield/ Rate (1)
ASSETS
Interest-earning assets:
Interest-bearing cash and deposits with banks	$	5,392,795	$	67,751	4.98	%	$	2,287,010	$	9,080	1.58	%
Resale agreements	648,587		4,460		2.73	%	1,037,292		6,769		2.59	%
AFS debt securities (2)(3)	6,074,119		57,177		3.73	%	6,204,729		38,383		2.45	%
Held-to-maturity (“HTM”) debt securities (2)	2,967,703		12,601		1.68	%	3,017,063		12,709		1.67	%
Loans (4)(5)	49,888,862		818,719		6.51	%	46,854,541		560,452		4.75	%
Restricted equity securities	79,395		1,079		5.39	%	78,054		843		4.28	%
Total interest-earning assets	$	65,051,461	$	961,787	5.87	%	$	59,478,689	$	628,236	4.19	%
Noninterest-earning assets:
Cash and due from banks	544,939						615,836
Allowance for loan losses	(629,229)						(566,369)
Other assets	3,969,615						3,551,288
Total assets	$	68,936,786					$	63,079,444
LIABILITIES AND STOCKHOLDERS’ EQUITY
Interest-bearing liabilities:
Checking deposits	$	8,080,025	$	54,285	2.67	%	$	6,879,632	$	8,493	0.49	%
Money market deposits	12,180,806		113,217		3.69	%	12,351,571		33,101		1.06	%
Savings deposits	2,013,246		4,047		0.80	%	2,961,634		2,268		0.30	%
Time deposits	16,621,683		166,747		3.98	%	9,435,063		25,032		1.05	%
Federal funds purchased and other short-term borrowings	4,501,327		49,575		4.37	%	211,794		1,177		2.20	%
FHLB advances	1		—		—	%	86,243		392		1.80	%
Repurchase agreements	13,897		193		5.51	%	624,821		4,421		2.81	%
Long-term debt and finance lease liabilities	152,962		2,910		7.55	%	152,565		1,543		4.01	%
Total interest-bearing liabilities	$	43,563,947	$	390,974	3.56	%	$	32,703,323	$	76,427	0.93	%
Noninterest-bearing liabilities and stockholders’ equity:
Demand deposits	16,302,296						22,423,633
Accrued expenses and other liabilities	2,465,745						2,179,850
Stockholders’ equity	6,604,798						5,772,638
Total liabilities and stockholders’ equity	$	68,936,786					$	63,079,444
Interest rate spread					2.31	%					3.26	%
Net interest income and net interest margin			$	570,813	3.48	%			$	551,809	3.68	%

(1)Annualized.

(2)Yields on tax-exempt securities are not presented on a tax-equivalent basis.

(3)Includes the amortization of net premiums on AFS debt securities of $7.8 million and $16.5 million for the third quarters of 2023 and 2022, respectively.

(4)Average balances include nonperforming loans and loans held-for-sale.

(5)Loans include the accretion of net deferred loan fees and amortization of net premiums, which totaled $13.1 million and $12.5 million for the third quarters of 2023 and 2022, respectively.

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The following table presents the interest spread, net interest margin, average balances, interest income and expense, and the average yield/rate by asset and liability component for the first nine months of 2023 and 2022:

	Nine Months Ended September 30,
	2023						2022
($ in thousands)	Average Balance		Interest		Average Yield/ Rate (1)		Average Balance		Interest		Average Yield/ Rate (1)
ASSETS
Interest-earning assets:
Interest-bearing cash and deposits with banks	$	4,703,843	$	164,393	4.67	%	$	3,175,596	$	17,127	0.72	%
Resale agreements	659,621		12,932		2.62	%	1,588,452		23,705		2.00	%
AFS debt securities (2)(3)	6,146,653		166,666		3.63	%	6,886,268		106,290		2.06	%
HTM debt securities (2)	2,982,284		38,013		1.70	%	2,672,797		33,645		1.68	%
Loans (4)(5)	48,969,843		2,318,369		6.33	%	44,548,520		1,376,978		4.13	%
Restricted equity securities	83,013		3,054		4.92	%	77,824		2,274		3.91	%
Total interest-earning assets	$	63,545,257	$	2,703,427	5.69	%	$	58,949,457	$	1,560,019	3.54	%
Noninterest-earning assets:
Cash and due from banks	578,144						656,772
Allowance for loan losses	(617,381)						(551,818)
Other assets	3,690,570						3,307,207
Total assets	$	67,196,590					$	62,361,618
LIABILITIES AND STOCKHOLDERS’ EQUITY
Interest-bearing liabilities:
Checking deposits	$	7,675,325	$	127,030	2.21	%	$	6,747,711	$	13,073	0.26	%
Money market deposits	11,295,157		275,738		3.26	%	12,526,222		45,196		0.48	%
Savings deposits	2,215,102		11,679		0.70	%	2,954,098		5,836		0.26	%
Time deposits	15,993,669		428,120		3.58	%	8,596,728		40,266		0.63	%
Federal funds purchased and other short-term borrowings	3,284,663		107,432		4.37	%	93,370		1,427		2.04	%
FHLB advances	164,836		6,430		5.22	%	128,137		1,529		1.60	%
Repurchase agreements	45,080		1,456		4.32	%	433,340		8,855		2.73	%
Long-term debt and finance lease liabilities	152,716		8,122		7.11	%	152,259		3,463		3.04	%
Total interest-bearing liabilities	$	40,826,548	$	966,007	3.16	%	$	31,631,865	$	119,645	0.51	%
Noninterest-bearing liabilities and stockholders’ equity:
Demand deposits	17,633,922						23,244,247
Accrued expenses and other liabilities	2,324,870						1,719,869
Stockholders’ equity	6,411,250						5,765,637
Total liabilities and stockholders’ equity	$	67,196,590					$	62,361,618
Interest rate spread					2.53	%					3.03	%
Net interest income and net interest margin			$	1,737,420	3.66	%			$	1,440,374	3.27	%

(1)Annualized.

(2)Yields on tax-exempt securities are not presented on a tax-equivalent basis.

(3)Includes the amortization of net premiums on AFS debt securities of $24.2 million and $60.3 million for the first nine months of 2023 and 2022, respectively.

(4)Average balances include nonperforming loans and loans held-for-sale.

(5)Include the accretion of net deferred loan fees and amortization of net premiums, which totaled $40.1 million and $36.3 million for the first nine months of 2023 and 2022, respectively.

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The following table summarizes the extent to which changes in (1) interest rates, and (2) volume of average interest-earning assets and average interest-bearing liabilities affected the Company’s net interest income for the periods presented. The total change for each category of interest-earning assets and interest-bearing liabilities is segmented into changes attributable to variations in volume and yield/rate. Changes that are not solely due to either volume or yield/rate are allocated proportionally based on the absolute value of the change related to average volume and average yield/rate.

($ in thousands)	Three Months Ended September 30,						Nine Months Ended September 30,
	2023 vs. 2022						2023 vs. 2022
	Total Change		Changes Due to				Total Change		Changes Due to
			Volume		Yield/Rate				Volume		Yield/Rate
Interest-earning assets:
Interest-bearing cash and deposits with banks	$	58,671	$	22,620	$	36,051	$	147,266	$	11,889	$	135,377
Resale agreements	(2,309)		(2,656)		347		(10,773)		(16,691)		5,918
AFS debt securities	18,794		(824)		19,618		60,376		(12,490)		72,866
HTM debt securities	(108)		(209)		101		4,368		3,940		428
Loans	258,267		38,297		219,970		941,391		148,091		793,300
Restricted equity securities	236		15		221		780		160		620
Total interest and dividend income	$	333,551	$	57,243	$	276,308	$	1,143,408	$	134,899	$	1,008,509
Interest-bearing liabilities:
Checking deposits	$	45,792	$	1,731	$	44,061	$	113,957	$	2,040	$	111,917
Money market deposits	80,116		(464)		80,580		230,542		(4,871)		235,413
Savings deposits	1,779		(921)		2,700		5,843		(1,778)		7,621
Time deposits	141,715		30,467		111,248		387,854		59,857		327,997
Federal funds purchased and other short-term borrowings	48,398		46,160		2,238		106,005		102,583		3,422
FHLB advances	(392)		(196)		(196)		4,901		549		4,352
Repurchase agreements	(4,228)		(6,420)		2,192		(7,399)		(10,729)		3,330
Long-term debt and finance lease liabilities	1,367		4		1,363		4,659		10		4,649
Total interest expense	$	314,547	$	70,361	$	244,186	$	846,362	$	147,661	$	698,701
Change in net interest income	$	19,004	$	(13,118)	$	32,122	$	297,046	$	(12,762)	$	309,808

Noninterest Income

The following table presents the components of noninterest income for the third quarters and first nine months of 2023 and 2022:

	Three Months Ended September 30,					Nine Months Ended September 30,
($ in thousands)	2023		2022		% Change	2023		2022		% Change
Lending fees	$	20,312	$	20,289	0%	$	61,799	$	59,869	3%
Deposit account fees	22,622		23,636		(4)%	66,610		66,323		0%
Interest rate contracts and other derivative income	11,208		8,761		28%	21,145		29,695		(29)%
Foreign exchange income	12,334		10,083		22%	38,245		34,143		12%
Wealth management fees	5,877		8,903		(34)%	19,070		21,494		(11)%
Net (losses) gains on sales of loans	(12)		2,129		NM	(41)		5,968		NM
Net (losses) gains on AFS debt securities	—		—		—%	(10,000)		1,306		NM
Other investment income	1,751		(580)		NM	7,675		5,910		30%
Other income	2,660		2,331		14%	10,858		9,031		20%
Total noninterest income	$	76,752	$	75,552	2%	$	215,361	$	233,739	(8)%

NM — Not meaningful.

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Noninterest income comprised 12% and 11% of total revenue for the third quarter and the first nine months of 2023, respectively, compared with 12% and 14% for the third quarter and the first nine months of 2022, respectively. Third quarter 2023 noninterest income of $76.8 million was relatively flat compared with $75.6 million for the same period in 2022. Noninterest income for the first nine months of 2023 was $215.4 million, a decrease of $18.4 million or 8%, compared with $233.7 million for the same period in 2022. This decrease was primarily due to net losses on AFS debt securities, a decrease in interest rate contracts and other derivative income, and net losses on sales of loans, partially offset by an increase in foreign exchange income during the first nine months of 2023.

Interest rate contracts and other derivative income was $11.2 million for the third quarter of 2023, an increase of $2.4 million or 28%, compared with $8.8 million for the same period in 2022. The increase was primarily due to increases in transaction volume and interest received on derivative collateral posted. For the first nine months of 2023, interest rate contracts and other derivative income was $21.1 million, a decrease of $8.6 million or 29%, compared with $29.7 million for the same period in 2022. The decrease was primarily due to lower favorable credit valuation adjustments, partially offset by increases in transaction volume and interest received on derivative collateral posted.

Foreign exchange income was $12.3 million for the third quarter of 2023, an increase of $2.3 million or 22%, compared with $10.1 million for the same period in 2022. This increase was primarily due to higher losses on foreign exchange trades in the prior-year period. For the first nine months of 2023, foreign exchange income was $38.2 million, an increase of $4.1 million or 12% compared with $34.1 million for the same period in 2022. This increase was primarily due to a higher level of gains on foreign exchange trades, partially offset by the unfavorable valuation of certain foreign currency denominated balance sheet items.

Net losses on sales of loans were $12 thousand and $41 thousand for the third quarter and first nine months of 2023, respectively. In comparison, net gains on sales of loans were $2.1 million and $6.0 million for the third quarter and first nine months of 2022, respectively. The year-over-year decreases were primarily due to a higher level of Small Business Administration loan sales in the prior periods.

Net losses on AFS debt securities of $10.0 million for the first nine months of 2023 were due to the write-off of an impaired subordinated debt security during the first quarter of 2023. In comparison, net gains on AFS debt securities were zero and $1.3 million for the third quarter and first nine months of 2022, respectively.

Noninterest Expense

The following table presents the components of noninterest expense for the third quarters and first nine months of 2023 and 2022:

	Three Months Ended September 30,						Nine Months Ended September 30,
($ in thousands)	2023		2022		% Change		2023		2022		% Change
Compensation and employee benefits	$	123,153	$	127,580	(3)	%	$	377,744	$	357,213	6	%
Occupancy and equipment expense	15,353		15,920		(4)	%	47,028		46,853		0	%
Deposit insurance premiums and regulatory assessments	8,583		4,875		76	%	24,755		14,519		71	%
Deposit account expense	11,585		6,707		73	%	31,753		17,071		86	%
Data processing	3,645		3,725		(2)	%	10,205		10,876		(6)	%
Computer software expense	8,116		6,889		18	%	22,955		20,755		11	%
Other operating expense	31,885		30,403		5	%	102,092		86,243		18	%
Amortization of tax credit and other investments	49,694		19,874		150	%	115,718		48,753		137	%
Total noninterest expense	$	252,014	$	215,973	17	%	$	732,250	$	602,283	22	%

Third quarter 2023 noninterest expense was $252.0 million, an increase of $36.0 million or 17%, compared with $216.0 million for the same period in 2022. The increase in the third quarter of 2023 was primarily due to increases in amortization of tax credit and other investments, deposit account expense, and deposit insurance premiums and regulatory assessments, partially offset by a decrease in compensation and employee benefits. For the first nine months of 2023, noninterest expense was $732.3 million, an increase of $130.0 million or 22%, compared with $602.3 million for the same period in 2022. The increase in the first nine months of 2023 was primarily due to higher amortization of tax credit and other investments, compensation and employee benefits, other operating expense, deposit account expense and deposit insurance premiums and regulatory assessments.

75

Compensation and employee benefits were $123.2 million for the third quarter of 2023, a decrease of $4.4 million or 3%, compared with $127.6 million for the same period in 2022. The decrease was primarily due to a decrease in temporary staffing and bonus accrual, partially offset by staffing growth. For the first nine months of 2023, compensation and employee benefits were $377.7 million, an increase of $20.5 million or 6%, compared with $357.2 million for the first nine months of 2022. This increase was primarily driven by staffing growth.

Deposit insurance premiums and regulatory assessments were $8.6 million for the third quarter of 2023, an increase of $3.7 million or 76%, compared with $4.9 million for the same period in 2022. For the first nine months of 2023, deposit insurance premiums and regulatory assessments were $24.8 million, an increase of $10.2 million or 71%, compared with $14.5 million for the same period in 2022. These increases were primarily due to a two bps increase in the base deposit insurance assessment rate under the FDIC’s Amended Restoration Plan.

Deposit account expense was $11.6 million for the third quarter of 2023, an increase of $4.9 million or 73%, compared with $6.7 million for the same period in 2022. For the first nine months of 2023, deposit account expense was $31.8 million, an increase of $14.7 million or 86%, compared with $17.1 million for the same period in 2022. These increases were primarily due to an increase in deposit referral fees which were driven by higher interest rates and an increase in insured cash sweep (“ICS”) product fees due to higher deposit balances. Such deposit referral fees are variable fees, sensitive to market rates and paid in lieu of interest on a small portion of the Bank’s deposit balances.

Other operating expense of $31.9 million for the third quarter of 2023, was essentially flat, compared with $30.4 million for the same period in 2022. For the first nine months of 2023, other operating expense was $102.1 million, an increase of $15.8 million or 18%, compared with $86.2 million for the same period in 2022. The increase in the first nine months of 2023 compared with the same period in 2022 was primarily due to higher interest expense paid on cash collateral and an increase in corporate expenses, partially offset by a reduction in foreclosure expenses.

Amortization of tax credit and other investments was $49.7 million for the third quarter of 2023, an increase of $29.8 million or 150%, compared with $19.9 million for the same period in 2022. For the first nine months of 2023, amortization of tax credit and other investments was $115.7 million, an increase of $67.0 million or 137%, compared with $48.8 million for the same period in 2022. The year-over-year increases were largely due to the timing of renewable energy tax credit investments that closed.

Income Taxes

	Three Months Ended September 30,								Nine Months Ended September 30,
($ in thousands)	2023			2022			% Change		2023			2022			% Change
Income before income taxes	$	353,551		$	384,388		(8)	%	$	1,132,531		$	1,023,330		11	%
Income tax expense	$	65,813		$	89,049		(26)	%	$	210,323		$	232,010		(9)	%
Effective tax rate	18.6		%	23.2		%			18.6		%	22.7		%

Third quarter 2023 income tax expense was $65.8 million and the effective tax rate was 18.6%, compared with third quarter 2022 income tax expense of $89.0 million and an effective tax rate of 23.2%. For the first nine months of 2023, income tax expense was $210.3 million and the effective tax rate was 18.6%, compared with income tax expense of $232.0 million and an effective tax rate of 22.7% for the same period in 2022. The decrease in income tax expense for the third quarter of 2023 compared with the year-ago same period was primarily due to lower pre-tax income and higher tax credits. The decrease in income tax expense for the first nine months of 2023 compared with the first nine months of 2022 was primarily due to higher tax credits. The increases in tax credits in both periods were primarily due to renewable energy tax credit investments.

Operating Segment Results

The Company organizes its operations into three reportable operating segments: (1) Consumer and Business Banking; (2) Commercial Banking; and (3) Other. These segments are defined by the type of customers served and the related products and services provided. The segments reflect how financial information is currently evaluated by management. For a description of the Company’s internal management reporting process, including the segment cost allocation methodology, see Note 15 — Business Segments to the Consolidated Financial Statements in this Form 10-Q.

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Segment net interest income represents the difference between actual interest earned on assets and interest incurred on liabilities of the segment, adjusted for funding charges or credits through the Company’s internal funds transfer pricing (“FTP”) process.

The following tables present the results by operating segment for the periods indicated:

	Three Months Ended September 30,
	Consumer and Business Banking				Commercial Banking				Other
($ in thousands)	2023		2022		2023		2022		2023		2022
Total revenue (loss)	$	340,541	$	357,230	$	286,017	$	271,637	$	21,007	$	(1,506)
Provision for credit losses	1,633		8,974		40,367		18,026		—		—
Noninterest expense	106,626		104,005		87,556		81,386		57,832		30,582
Segment income (loss) before income taxes	232,282		244,251		158,094		172,225		(36,825)		(32,088)
Segment net income (loss)	$	164,051	$	173,982	$	110,182	$	122,869	$	13,505	$	(1,512)

($ in thousands)	Nine Months Ended September 30,
	Consumer and Business Banking				Commercial Banking				Other
	2023		2022		2023		2022		2023		2022
Total revenue (loss)	$	1,005,427	$	908,400	$	871,917	$	807,787	$	75,437	$	(42,074)
Provision for credit losses	22,169		14,976		65,831		33,524		—		—
Noninterest expense	327,476		294,395		263,137		235,804		141,637		72,084
Segment income (loss) before income taxes	655,782		599,029		542,949		538,459		(66,200)		(114,158)
Segment net income (loss)	$	463,151	$	426,695	$	383,669	$	384,237	$	75,388	$	(19,612)

Consumer and Business Banking

The Consumer and Business Banking segment primarily provides financial products and services to consumer and commercial customers through the Company’s domestic branch network and digital banking platform. This segment offers consumer and commercial deposits, mortgage and home equity loans, and other products and services. It also originates commercial loans for small- and medium-sized enterprises through the Company’s branch network. Other products and services provided by this segment include wealth management, treasury management, interest rate risk hedging and foreign exchange services.

The following tables present additional financial information for the Consumer and Business Banking segment for the periods indicated:

	Three Months Ended September 30,
					Change from 2022
($ in thousands)	2023		2022		$		%
Net interest income before provision for credit losses	$	315,409	$	326,411	$	(11,002)	(3)	%
Noninterest income	25,132		30,819		(5,687)		(18)	%
Total revenue	340,541		357,230		(16,689)		(5)	%
Provision for credit losses	1,633		8,974		(7,341)		(82)	%
Noninterest expense	106,626		104,005		2,621		3	%
Segment income before income taxes	232,282		244,251		(11,969)		(5)	%
Income tax expense	68,231		70,269		(2,038)		(3)	%
Segment net income	$	164,051	$	173,982	$	(9,931)	(6)	%
Average loans	$	18,215,015	$	16,405,433	$	1,809,582	11	%
Average deposits	$	33,755,409	$	33,271,717	$	483,692	1	%

77

($ in thousands)	Nine Months Ended September 30,
					Change from 2022
	2023		2022		$		%
Net interest income before provision for credit losses	$	927,173	$	823,998	$	103,175	13	%
Noninterest income	78,254		84,402		(6,148)		(7)	%
Total revenue	1,005,427		908,400		97,027		11	%
Provision for credit losses	22,169		14,976		7,193		48	%
Noninterest expense	327,476		294,395		33,081		11	%
Segment income before income taxes	655,782		599,029		56,753		9	%
Income tax expense	192,631		172,334		20,297		12	%
Segment net income	$	463,151	$	426,695	$	36,456	9	%
Average loans	$	17,653,442	$	15,448,874	$	2,204,568	14	%
Average deposits	$	33,622,756	$	33,272,271	$	350,485	1	%

Consumer and Business Banking segment net income decreased by $9.9 million or 6% year-over-year to $164.1 million for the third quarter of 2023. This decrease was primarily driven by decreases in net interest income and noninterest income, partially offset by a decrease in provision for credit losses. Net interest income before provision for credit losses decreased by $11.0 million or 3% year-over-year to $315.4 million for the third quarter of 2023. This decrease was primarily driven by an increase in loan FTP charges due to the year-over-year increase in market rates. Noninterest income decreased by $5.7 million or 18% to $25.1 million for the third quarter of 2023, mainly due to decreases in wealth management fees and deposit account fees.

Net income in this segment increased by $36.5 million or 9% year-over-year to $463.2 million for the first nine months of 2023. This increase was primarily driven by an increase in net interest income, partially offset by higher noninterest expense and income tax expense. Net interest income before provision for credit losses increased by $103.2 million or 13% year-over-year to $927.2 million for the first nine months of 2023. This increase was primarily driven by higher deposit FTP credits due to the year-over-year increase in market rates. Noninterest expense increased by $33.1 million or 11% year-over-year to $327.5 million for the first nine months of 2023, reflecting higher allocated corporate overhead expenses, compensation and employee benefits expense, deposit insurance premium and regulatory assessments, and deposit account expense.

Commercial Banking

The Commercial Banking segment primarily generates commercial loan and deposit products. Commercial loan products include CRE lending, construction finance, commercial business lending, working capital lines of credit, trade finance, letters of credit, affordable housing lending, asset-based lending, asset-backed finance, project finance and equipment financing. Commercial deposit products and other financial services include treasury management, foreign exchange services, and interest rate and commodity risk hedging.

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The following tables present additional financial information for the Commercial Banking segment for the periods indicated:

	Three Months Ended September 30,
					Change from 2022
($ in thousands)	2023		2022		$		%
Net interest income before provision for credit losses	$	242,345	$	222,996	$	19,349	9	%
Noninterest income	43,672		48,641		(4,969)		(10)	%
Total revenue	286,017		271,637		14,380		5	%
Provision for credit losses	40,367		18,026		22,341		124	%
Noninterest expense	87,556		81,386		6,170		8	%
Segment income before income taxes	158,094		172,225		(14,131)		(8)	%
Income tax expense	47,912		49,356		(1,444)		(3)	%
Segment net income	$	110,182	$	122,869	$	(12,687)	(10)	%
Average loans	$	31,673,847	$	30,449,108	$	1,224,739	4	%
Average deposits	$	18,176,331	$	16,627,353	$	1,548,978	9	%

($ in thousands)	Nine Months Ended September 30,
					Change from 2022
	2023		2022		$		%
Net interest income before provision for credit losses	$	742,108	$	662,037	$	80,071	12	%
Noninterest income	129,809		145,750		(15,941)		(11)	%
Total revenue	871,917		807,787		64,130		8	%
Provision for credit losses	65,831		33,524		32,307		96	%
Noninterest expense	263,137		235,804		27,333		12	%
Segment income before income taxes	542,949		538,459		4,490		1	%
Income tax expense	159,280		154,222		5,058		3	%
Segment net income	$	383,669	$	384,237	$	(568)	0	%
Average loans	$	31,316,401	$	29,099,646	$	2,216,755	8	%
Average deposits	$	17,419,190	$	17,296,919	$	122,271	1	%

Commercial Banking segment net income decreased by $12.7 million or 10% year-over-year to $110.2 million for the third quarter of 2023. This decrease was due to higher provision for credit losses and noninterest expense and lower noninterest income, partially offset by higher net interest income. Net interest income before provision for credit losses increased $19.4 million or 9% year-over-year to $242.3 million for the third quarter of 2023. This increase was primarily due to higher loan interest income from commercial loan growth, partially offset by higher interest expense due to interest-bearing deposit growth. Noninterest income decreased by $5.0 million or 10% year-over-year to $43.7 million for the third quarter of 2023, mainly due to a decrease in foreign exchange income. Provision for credit losses increased $22.3 million or 124% year-over-year to $40.4 million for the third quarter of 2023, primarily driven by commercial loan growth as well as the current economic outlook. Noninterest expense increased $6.2 million or 8% year-over-year to $87.6 million for the third quarter of 2023, primarily due to higher deposit account expense.

Net income in this segment decreased by $568 thousand to $383.7 million for the first nine months of 2023. This decrease reflected higher provision for credit losses and noninterest expense and lower noninterest income, partially offset by higher net interest income. Net interest income before provision for credit losses increased $80.1 million or 12% year-over-year to $742.1 million for the first nine months of 2023. This increase was primarily due to higher loan interest income from commercial loan growth. Noninterest income decreased by $15.9 million or 11% year-over-year to $129.8 million for the first nine months of 2023, mainly due to decreases in interest rate contracts and other derivative income, net gains on sales of loans, and foreign exchange income. Provision for credit losses increased $32.3 million or 96% year-over-year to $65.8 million for the first nine months of 2023, primarily driven by commercial loan growth as well as the current economic outlook. Noninterest expense increased $27.3 million or 12% year-over-year to $263.1 million for the first nine months of 2023, primarily due to higher deposit account expense, allocated corporate overhead expenses and compensation and employee benefits.

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Other

Centralized functions, including the corporate treasury activities of the Company and eliminations of inter-segment amounts, have been aggregated and included in the Other segment, which provides broad administrative support to the two core segments, namely the Consumer and Business Banking and the Commercial Banking segments.

The following tables present additional financial information for the Other segment for the periods indicated:

	Three Months Ended September 30,
					Change from 2022
($ in thousands)	2023		2022		$		%
Net interest income before provision for credit losses	$	13,059	$	2,402	$	10,657	444	%
Noninterest income (loss)	7,948		(3,908)		11,856		303	%
Total revenue (loss)	21,007		(1,506)		22,513		NM
Noninterest expense	57,832		30,582		27,250		89	%
Segment loss before income taxes	(36,825)		(32,088)		(4,737)		(15)	%
Income tax benefit	(50,330)		(30,576)		(19,754)		65	%
Segment net income (loss)	$	13,505	$	(1,512)	$	15,017	NM
Average deposits	$	3,266,316	$	4,152,463	$	(886,147)	(21)	%

($ in thousands)	Nine Months Ended September 30,
					Change from 2022
	2023		2022		$		%
Net interest income (loss) before provision for credit losses	$	68,139	$	(45,661)	$	113,800	249	%
Noninterest income	7,298		3,587		3,711		103	%
Total revenue (loss)	75,437		(42,074)		117,511		279	%
Noninterest expense	141,637		72,084		69,553		96	%
Segment loss before income taxes	(66,200)		(114,158)		47,958		42	%
Income tax benefit	(141,588)		(94,546)		(47,042)		50	%
Segment net income (loss)	$	75,388	$	(19,612)	$	95,000	484	%
Average deposits	$	3,771,229	$	3,499,816	$	271,413	8	%

The Other segment reported segment loss before income taxes of $36.8 million and segment net income of $13.5 million, reflecting an income tax benefit of $50.3 million, for the third quarter of 2023. The increase in segment loss before income taxes was primarily driven by higher noninterest expense, partially offset by increases in noninterest income and net interest income. The $10.7 million increase in net interest income before provision for credit losses for the third quarter of 2023 was primarily driven by higher investment interest income due to a balance increase in interest-bearing cash and deposits with banks and higher yields on debt securities and interest-bearing cash and deposits with banks, partially offset by higher costs of interest-bearing deposits and borrowings. Noninterest income increased by $11.9 million for the third quarter of 2023, mainly due to an increase in foreign exchange income. Noninterest expense increased $27.3 million for the third quarter of 2023, primarily due to the timing of investments that closed.

For the first nine months of 2023, the Other segment reported segment loss before income taxes of $66.2 million and segment net income of $75.4 million, reflecting an income tax benefit of $141.6 million. The decrease in segment loss before income taxes was primarily due to higher net interest income, partially offset by higher noninterest expense. The $113.8 million increase in net interest income before provision for credit losses for the first nine months of 2023 was primarily driven by higher investment interest income due to higher yields on interest-bearing cash and deposits with banks, and debt securities, and a higher FTP spread income absorbed by the Other segment, partially offset by higher costs of interest-bearing deposits and borrowings. Noninterest expense increased $69.6 million for the first nine months of 2023, reflecting the timing of investments that closed.

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The income tax expense or benefit in the Other segment consists of the remaining unallocated income tax expense or benefit after allocating income tax expense to the two core segments, and reflects the impact of tax credit investment activity. Income tax expense is allocated to the Consumer and Business Banking and the Commercial Banking segments by applying statutory income tax rates to the segment income before income taxes. Tax credit investment amortization is allocated to the Other segment.

Balance Sheet Analysis

Debt Securities

The Company maintains a portfolio of high quality and liquid debt securities with a moderate duration profile. It closely manages the overall portfolio credit, interest rate and liquidity risks. The Company’s debt securities provide:

•interest income for earnings and yield enhancement;

•funding availability for needs arising during the normal course of business;

•the ability to execute interest rate risk management strategies in response to changes in economic or market conditions; and

•collateral to support pledging agreements as required and/or to enhance the Company’s borrowing capacity.

While the Company does not intend to sell its debt securities, it may sell AFS securities in response to changes in the balance sheet and related interest rate risk to meet liquidity, regulatory and strategic requirements.

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The following table presents the distribution of the Company’s AFS and HTM debt securities portfolio as of September 30, 2023 and December 31, 2022, and by credit ratings as of September 30, 2023:

	September 30, 2023						December 31, 2022						Ratings as of September 30, 2023 (1)
($ in thousands)	Amortized Cost		Fair Value		% of Fair Value		Amortized Cost		Fair Value		% of Fair Value		AAA/AA		A		BBB		BB and Lower		No Rating (2)
AFS debt securities:
U.S. Treasury securities	$	974,615	$	904,101	15	%	$	676,306	$	606,203	10	%	100	%	—	%	—	%	—	%	—	%
U.S. government agency and U.S. government-sponsored enterprise debt securities	512,712		447,464		7	%	517,806		461,607		8	%	100	%	—	%	—	%	—	%	—	%
U.S. government agency and U.S. government-sponsored enterprise mortgage-backed securities	2,528,370		2,156,674		36	%	2,588,446		2,262,464		37	%	100	%	—	%	—	%	—	%	—	%
Municipal securities	301,408		243,556		4	%	303,884		257,099		4	%	97	%	—	%	—	%	—	%	3	%
Non-agency mortgage-backed securities	1,106,125		936,107		15	%	1,209,714		1,047,553		17	%	81	%	—	%	—	%	—	%	19	%
Corporate debt securities	653,501		475,434		8	%	673,502		526,274		9	%	—	%	31	%	65	%	4	%	—	%
Foreign government bonds	237,531		222,790		4	%	241,165		227,053		4	%	47	%	53	%	—	%	—	%	—	%
Asset-backed securities	44,819		43,757		1	%	51,152		49,076		1	%	100	%	—	%	—	%	—	%	—	%
Collateralized loan obligations	617,250		609,954		10	%	617,250		597,664		10	%	96	%	4	%	—	%	—	%	—	%
Total AFS debt securities	$	6,976,331	$	6,039,837	100	%	$	6,879,225	$	6,034,993	100	%	87	%	5	%	5	%	—	%	3	%
HTM debt securities:
U.S. Treasury securities	$	528,169	$	470,618	20	%	$	524,081	$	471,469	19	%	100	%	—	%	—	%	—	%	—	%
U.S. government agency and U.S. government-sponsored enterprise debt securities	1,001,298		752,291		33	%	998,972		789,412		32	%	100	%	—	%	—	%	—	%	—	%
U.S. government agency and U.S. government-sponsored enterprise mortgage-backed securities	1,245,675		949,564		41	%	1,289,106		1,042,310		43	%	100	%	—	%	—	%	—	%	—	%
Municipal securities	189,093		135,575		6	%	189,709		151,980		6	%	100	%	—	%	—	%	—	%	—	%
Total HTM debt securities	$	2,964,235	$	2,308,048	100	%	$	3,001,868	$	2,455,171	100	%	100	%	—	%	—	%	—	%	—	%
Total debt securities	$	9,940,566	$	8,347,885			$	9,881,093	$	8,490,164

(1)Credit ratings express opinions about the credit quality of a debt security. The Company determines the credit rating of a security according to the lowest credit rating made available by nationally recognized statistical rating organizations (“NRSROs”). Debt securities rated investment grade, which are those with ratings similar to BBB- or above (as defined by NRSROs), are generally considered by the rating agencies and market participants to be low credit risk. Ratings percentages are allocated based on fair value.

(2)For debt securities not rated by NRSROs, the Company uses other factors which include but are not limited to the priority in collections within the securitization structure, and whether the contractual payments have historically been on time.

As of September 30, 2023, the Company’s AFS and HTM debt securities portfolios had an effective duration (defined as the sensitivity of the value of the portfolio to interest rate changes) of 3.8 and 7.7, respectively, compared with 4.1 and 8.0, respectively, as of December 31, 2022. The modest decreases in both the AFS and HTM effective durations were due to the portfolio seasoning and reduced variation of optionality under the current interest rate environment.

Available-for-Sale Debt Securities

As of September 30, 2023, the fair value of the AFS debt securities portfolio was relatively unchanged at $6.04 billion from December 31, 2022. The Company’s AFS debt securities are carried at fair value with noncredit-related unrealized gains and losses, net of tax, reported in Other comprehensive income (loss) on the Consolidated Statement of Comprehensive Income. Pre-tax net unrealized losses on AFS debt securities were $936.5 million as of September 30, 2023, compared with $844.2 million as of December 31, 2022.

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As of both September 30, 2023 and December 31, 2022, 97% of the carrying value of the AFS debt securities portfolio was rated investment grade by NRSROs. Of the AFS debt securities with gross unrealized losses, substantially all were rated investment grade as of both September 30, 2023 and December 31, 2022. There was no allowance for credit losses provided against the AFS debt securities as of each of September 30, 2023 and December 31, 2022. Additionally, there were no credit losses recognized in earnings for both the third quarter and first nine months of 2023 and 2022.

Held-to-Maturity Debt Securities

All HTM debt securities were issued, guaranteed, or supported by the U.S. government or government-sponsored enterprises. Accordingly, the Company applied a zero credit loss assumption for these securities and no allowance for credit loss was recorded as of both September 30, 2023 and December 31, 2022.

For additional information on AFS and HTM securities, see Note 1 — Summary of Significant Accounting Policies to the Consolidated Financial Statements in the Company’s 2022 Form 10-K and Note 3 — Fair Value Measurement and Fair Value of Financial Instruments and Note 5 — Securities to the Consolidated Financial Statements in this Form 10-Q.

Loan Portfolio

The Company offers a broad range of financial products designed to meet the credit needs of its borrowers. The Company’s loan portfolio segments include commercial loans, which consist of commercial and industrial (“C&I”), CRE, multifamily residential, and construction and land loans, as well as consumer loans, which consist of single-family residential, home equity lines of credit (“HELOCs”) and other consumer loans. Loans held-for-investment totaled $50.91 billion as of September 30, 2023, an increase of $2.70 billion or 6% from $48.20 billion as of December 31, 2022. This growth was primarily driven by increases of $1.30 billion or 7% in total CRE loans and $1.27 billion or 9% in total residential mortgage loans. The composition of the loan portfolio as of September 30, 2023 was similar to the composition as of December 31, 2022.

The following table presents the composition of the Company’s total loan portfolio by loan type as of September 30, 2023 and December 31, 2022:

	September 30, 2023				December 31, 2022
($ in thousands)	Amount		%		Amount		%
Commercial:
C&I	$	15,864,042	31	%	$	15,711,095	33	%
CRE:
CRE	14,667,378		29	%	13,857,870		29	%
Multifamily residential	4,900,097		10	%	4,573,068		9	%
Construction and land	798,190		2	%	638,420		1	%
Total CRE	20,365,665		41	%	19,069,358		39	%
Total commercial	36,229,707		72	%	34,780,453		72	%
Consumer:
Residential mortgage:
Single-family residential	12,836,558		25	%	11,223,027		23	%
HELOCs	1,776,665		3	%	2,122,655		5	%
Total residential mortgage	14,613,223		28	%	13,345,682		28	%
Other consumer	64,254		0	%	76,295		0	%
Total consumer	14,677,477		28	%	13,421,977		28	%
Total loans held-for-investment (1)	50,907,184		100	%	48,202,430		100	%
Allowance for loan losses	(655,523)				(595,645)
Loans held-for-sale (2)	4,762				25,644
Total loans, net	$	50,256,423			$	47,632,429

(1)Includes $72.0 million and $70.4 million comprising unamortized deferred and unearned fees, net of premiums as of September 30, 2023 and December 31, 2022, respectively.

(2)Consists of C&I loans as of both September 30, 2023 and December 31, 2022.

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Commercial

The commercial loan portfolio comprised 72% of total loans as of both September 30, 2023 and December 31, 2022. The Company actively monitors the commercial lending portfolio for elevated levels of credit risk and reviews credit exposures for sensitivity to changing economic conditions.

Commercial — Commercial and Industrial Loans. Total C&I loan commitments were $24.30 billion as of September 30, 2023, an increase of $1.52 billion or 7% from $22.78 billion as of December 31, 2022. Total C&I loans were $15.86 billion as of September 30, 2023, an increase of $152.9 million or 1% from $15.71 billion as of December 31, 2022, with a utilization rate of 65% as of September 30, 2023, compared with 69% as of December 31, 2022. Total C&I loans made up 31% and 33% of total loans held-for-investment as of September 30, 2023 and December 31, 2022, respectively. The C&I loan portfolio includes loans and financing for businesses across a wide spectrum of industries. The Company offers a variety of C&I products, including commercial business lending, working capital lines of credit, trade finance, letters of credit, asset-based lending, asset-backed finance, project finance and equipment financing. Additionally, the Company has a portfolio of broadly syndicated C&I loans, which represent revolving or term loan facilities that are marketed and sold primarily to institutional investors. This portfolio totaled $768.3 million and $855.9 million as of September 30, 2023 and December 31, 2022, respectively. The majority of the C&I loans had variable interest rates as of both September 30, 2023 and December 31, 2022.

The C&I portfolio is well-diversified by industry. The Company monitors concentrations within the C&I loan portfolio by industry and customer exposure, and has exposure limits by industry and loan product. The following table presents the industry mix within the Company’s C&I loan portfolio as of September 30, 2023 and December 31, 2022.

	September 30, 2023					December 31, 2022
($ in thousands)	Amount		%		($ in thousands)	Amount		%
Industry:					Industry:
Private equity	$	2,422,674	15	%	Private equity	$	2,238,723	14	%
Media & entertainment	1,794,897		11	%	Media & entertainment	1,841,719		12	%
Real estate investment & management	1,383,773		9	%	Real estate investment & management	1,272,169		8	%
Manufacturing & wholesale	900,674		6	%	Manufacturing & wholesale	1,091,933		7	%
Infrastructure & clean energy	878,025		6	%	Infrastructure & clean energy	820,095		5	%
Tech & telecom	668,514		4	%	Food production & distribution	738,636		5	%
Food production & distribution	648,224		4	%	Tech & telecom	618,719		4	%
Hospitality & leisure	597,753		4	%	Hospitality & leisure	562,234		4	%
Oil & gas	574,966		4	%	Oil & gas	519,784		3	%
Healthcare services	377,434		2	%	Consumer goods	425,214		3	%
All other C&I	5,617,108		35	%	All other C&I	5,581,869		35	%
Total C&I	$	15,864,042	100	%	Total C&I	$	15,711,095	100	%

Commercial — Total Commercial Real Estate Loans. Total CRE loans totaled $20.37 billion as of September 30, 2023, which grew $1.30 billion or 7% from $19.07 billion as of December 31, 2022, and accounted for 41% of total loans held-for-investment as of September 30, 2023, compared with 39% as of December 31, 2022. The total CRE portfolio consists of CRE, multifamily residential, and construction and land loans, and affordable housing lending. The increase in total CRE loans was driven by well-diversified growth across our major property types, partially offset by a decrease in office CRE loans. The Company’s underwriting parameters for CRE loans are established in compliance with supervisory guidance, including: property type, geography and loan-to-value (“LTV”). The consistency of the Company’s low LTV underwriting standards has historically resulted in lower credit losses.

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The Company’s total CRE loan portfolio is well-diversified by property type with an average CRE loan size of $3.0 million as of September 30, 2023, compared with $2.8 million as of December 31, 2022. The following table summarizes the Company’s total CRE loans by property type as of September 30, 2023 and December 31, 2022:

	September 30, 2023				December 31, 2022
($ in thousands)	Amount		%		Amount		%
Property types:
Multifamily	$	4,900,097	24	%	$	4,573,068	24	%
Retail (1)	4,250,593		21	%	4,075,768		22	%
Industrial (1)	3,947,570		19	%	3,617,086		19	%
Hotel (1)	2,339,435		12	%	2,085,910		11	%
Office (1)	2,285,846		11	%	2,522,554		13	%
Healthcare (1)	836,882		4	%	796,577		4	%
Construction and land	798,190		4	%	638,420		3	%
Other (1)	1,007,052		5	%	759,975		4	%
Total CRE loans	$	20,365,665	100	%	$	19,069,358	100	%

(1)Included in CRE loans, which is a subset of Total CRE loans.

The weighted-average LTV ratio of the total CRE loan portfolio was 51% as of both September 30, 2023 and December 31, 2022. Weighted average LTV is based on the most recent LTV, which is based on the latest available appraisal and current loan commitment. Approximately 91% of total CRE loans had an LTV ratio of 65% or lower as of September 30, 2023, compared with 90% as of December 31, 2022.

The following tables provide a summary of the Company’s CRE, multifamily residential, and construction and land loans by geography as of September 30, 2023 and December 31, 2022. The distribution of the total CRE loan portfolio reflects the Company’s geographical branch footprint, which is primarily concentrated in California:

	September 30, 2023
($ in thousands)	CRE		%		Multifamily Residential		%		Construction and Land		%		Total CRE		%
Geographic markets:
Southern California	$	7,552,830	51	%	$	2,296,539	47	%	$	297,311	37	%	$	10,146,680	50	%
Northern California	2,729,784		19	%	988,375		20	%	246,404		31	%	3,964,563		19	%
California	10,282,614		70	%	3,284,914		67	%	543,715		68	%	14,111,243		69	%
Texas	1,111,775		8	%	445,144		9	%	20,720		3	%	1,577,639		8	%
New York	696,583		5	%	261,433		5	%	76,786		10	%	1,034,802		5	%
Washington	488,814		3	%	165,257		4	%	18,592		2	%	672,663		3	%
Arizona	357,997		2	%	149,327		3	%	28,496		3	%	535,820		3	%
Nevada	237,442		2	%	106,843		2	%	32,213		4	%	376,498		2	%
Other markets	1,492,153		10	%	487,179		10	%	77,668		10	%	2,057,000		10	%
Total loans	$	14,667,378	100	%	$	4,900,097	100	%	$	798,190	100	%	$	20,365,665	100	%

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	December 31, 2022
($ in thousands)	CRE		%		Multifamily Residential		%		Construction and Land		%		Total CRE		%
Geographic markets:
Southern California	$	7,233,902	52	%	$	2,215,632	48	%	$	222,425	35	%	$	9,671,959	51	%
Northern California	2,798,840		20	%	890,002		20	%	235,732		37	%	3,924,574		20	%
California	10,032,742		72	%	3,105,634		68	%	458,157		72	%	13,596,533		71	%
Texas	1,150,401		8	%	410,872		9	%	2,153		0	%	1,563,426		8	%
New York	682,096		5	%	221,253		5	%	99,595		16	%	1,002,944		5	%
Washington	449,423		3	%	173,611		4	%	15,557		2	%	638,591		3	%
Arizona	291,114		2	%	95,460		2	%	297		0	%	386,871		2	%
Nevada	159,092		1	%	108,060		2	%	30,673		5	%	297,825		2	%
Other markets	1,093,002		9	%	458,178		10	%	31,988		5	%	1,583,168		9	%
Total loans	$	13,857,870	100	%	$	4,573,068	100	%	$	638,420	100	%	$	19,069,358	100	%

As 69% and 71% of total CRE loans were concentrated in California as of September 30, 2023 and December 31, 2022, respectively, changes in California’s economy and real estate values could have a significant impact on the collectability of these loans and the required level of allowance for loan losses. For additional information related to the higher degree of risk from a downturn in the California real estate markets, see Item 1A. Risk Factors — Risks Related to Geopolitical Uncertainties to the Company’s 2022 Form 10-K.

Commercial — Commercial Real Estate Loans. The Company focuses on providing financing to experienced real estate investors and developers who have moderate levels of leverage, many of whom are long-time customers of the Bank. CRE loans totaled $14.67 billion as of September 30, 2023, compared with $13.86 billion as of December 31, 2022, and accounted for 29% of total loans held-for-investment as of both dates. Interest rates on CRE loans may be fixed, variable or hybrid. As of September 30, 2023, 60% of our CRE portfolio was variable rate, of which 50% had customer-level interest rate derivative contracts in place. These are hedging contracts offered by the Company to help our customers manage their interest rate risk while the Bank's own exposure remained variable rate. In comparison, as of December 31, 2022, 65% of our CRE portfolio was variable rate, of which 47% had customer-level interest rate derivative contracts in place. Loans are underwritten with conservative standards for cash flows, debt service coverage and LTV.

Owner-occupied properties comprised 20% of the CRE loans as of both September 30, 2023 and December 31, 2022. The remainder were non-owner-occupied properties, where 50% or more of the debt service for the loan is typically provided by rental income from an unaffiliated third party.

Commercial — Multifamily Residential Loans. The multifamily residential loan portfolio is largely comprised of loans secured by residential properties with five or more units. Multifamily residential loans totaled $4.90 billion as of September 30, 2023, compared with $4.57 billion as of December 31, 2022, and accounted for 10% and 9% of total loans held-for-investment as of September 30, 2023 and December 31, 2022, respectively. The Company offers a variety of first lien mortgages, including fixed- and variable-rate loans, as well as hybrid loans with interest rates that adjust annually after an initial fixed rate period of three to ten years. As of September 30, 2023, 54% of our multifamily residential loan portfolio was variable rate, of which 39% had customer-level interest rate derivative contracts in place. These are hedging contracts offered by the Company to help our customers manage their interest rate risk while the Bank's own exposure remained variable rate. In comparison, as of December 31, 2022, 57% of our multifamily residential loan portfolio was variable rate, of which 34% had customer-level interest rate derivative contracts in place.

Commercial — Construction and Land Loans. Construction and land loans provide financing for a portfolio of projects diversified by real estate property type. Construction and land loans totaled $798.2 million as of September 30, 2023, compared with $638.4 million as of December 31, 2022, and accounted for 2% and 1% of total loans held-for-investment as of September 30, 2023 and December 31, 2022, respectively. Construction loan exposure was made up of $655.2 million in loans outstanding, plus $699.0 million in unfunded commitments as of September 30, 2023, compared with $536.8 million in loans outstanding, plus $611.4 million in unfunded commitments as of December 31, 2022. Land loans totaled $143.0 million as of September 30, 2023, compared with $101.7 million as of December 31, 2022.

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Consumer

Residential mortgage loans are primarily originated through the Bank’s branch network. The following tables summarize the Company’s single-family residential and HELOC loan portfolios by geography as of September 30, 2023 and December 31, 2022. The average total residential loan size was $436 thousand and $434 thousand as of September 30, 2023 and December 31, 2022, respectively:

	September 30, 2023
($ in thousands)	Single-Family Residential		%		HELOCs		%		Total Residential Mortgage		%
Geographic markets:
Southern California	$	4,750,136	37	%	$	819,560	46	%	$	5,569,696	38	%
Northern California	1,560,454		12	%	387,532		22	%	1,947,986		13	%
California	6,310,590		49	%	1,207,092		68	%	7,517,682		51	%
New York	4,274,703		33	%	252,036		14	%	4,526,739		31	%
Washington	688,842		6	%	195,881		11	%	884,723		6	%
Massachusetts	366,793		3	%	70,672		4	%	437,465		3	%
Georgia	401,471		3	%	16,822		1	%	418,293		3	%
Nevada	377,730		3	%	32,665		2	%	410,395		3	%
Texas	400,214		3	%	—		—	%	400,214		3	%
Other markets	16,215		0	%	1,497		0	%	17,712		0	%
Total	$	12,836,558	100	%	$	1,776,665	100	%	$	14,613,223	100	%
Lien priority:
First mortgage	$	12,836,558	100	%	$	1,412,482	80	%	$	14,249,040	98	%
Junior lien mortgage	—		—	%	364,183		20	%	364,183		2	%
Total	$	12,836,558	100	%	$	1,776,665	100	%	$	14,613,223	100	%

	December 31, 2022
($ in thousands)	Single-Family Residential		%		HELOCs		%		Total Residential Mortgage		%
Geographic markets:
Southern California	$	4,142,623	37	%	$	959,632	45	%	$	5,102,255	38	%
Northern California	1,294,721		11	%	492,921		23	%	1,787,642		14	%
California	5,437,344		48	%	1,452,553		68	%	6,889,897		52	%
New York	3,964,779		35	%	286,285		14	%	4,251,064		32	%
Washington	632,892		6	%	236,434		11	%	869,326		7	%
Massachusetts	299,051		3	%	85,590		4	%	384,641		3	%
Georgia	303,615		3	%	21,493		1	%	325,108		2	%
Texas	316,771		3	%	—		—	%	316,771		2	%
Nevada	253,702		2	%	40,300		2	%	294,002		2	%
Other markets	14,873		0	%	—		—	%	14,873		0	%
Total	$	11,223,027	100	%	$	2,122,655	100	%	$	13,345,682	100	%
Lien priority:
First mortgage	$	11,223,027	100	%	$	1,770,741	83	%	$	12,993,768	97	%
Junior lien mortgage	—		—	%	351,914		17	%	351,914		3	%
Total	$	11,223,027	100	%	$	2,122,655	100	%	$	13,345,682	100	%

87

Consumer — Single-Family Residential Loans. Single-family residential loans totaled $12.84 billion or 25% of total loans held-for-investment as of September 30, 2023, compared with $11.22 billion or 23% of total loans held-for-investment as of December 31, 2022. Single-family residential loans increased $1.61 billion or 14% from December 31, 2022, primarily driven by organic growth in mortgages and residential properties in California and New York. The Company was in a first lien position for all of its single-family residential loans as of both September 30, 2023 and December 31, 2022. Many of these loans are reduced documentation loans, for which a substantial down payment is required, resulting in a low LTV ratio at origination, typically 65% or less. The weighted-average LTV ratio was 53% as of both dates. These loans have historically experienced low delinquency and loss rates. The Company offers a variety of single-family residential first lien mortgage loan programs, including fixed- and variable-rate loans, as well as hybrid loans with interest rates that adjust on a regular basis, typically annually, after an initial fixed rate period.

Consumer — Home Equity Lines of Credit. Total HELOC commitments were $5.31 billion as of September 30, 2023, a decrease of $190.5 million or 3% from $5.50 billion as of December 31, 2022, with a utilization rate of 33% as of September 30, 2023, compared with 39% as of December 31, 2022. A majority of unfunded HELOC commitments are unconditionally cancellable. HELOCs outstanding totaled $1.78 billion or 3% of total loans held-for-investment as of September 30, 2023, compared with $2.12 billion or 5% of total loans held-for-investment as of December 31, 2022. HELOCs outstanding decreased $346.0 million or 16% from December 31, 2022. The Company was in a first lien position for 80% and 83% of total outstanding HELOCs as of September 30, 2023 and December 31, 2022, respectively. The weighted-average LTV ratio was 48% on HELOC commitments as of September 30, 2023, compared with 49% as of December 31, 2022. Weighted-average LTV ratio represents the loan’s balance divided by the estimated current property value. For junior lien home equity loans, combined LTV ratios are used for junior lien home equity products. Many of these loans are reduced documentation loans, for which a substantial down payment is required, resulting in a low LTV ratio at origination, typically 65% or less. As a result, these loans have historically experienced low delinquency and loss rates. Substantially all of the Company’s HELOCs were variable-rate loans as of both September 30, 2023 and December 31, 2022.

All originated commercial and consumer loans are subject to the Company’s conservative underwriting guidelines and loan origination standards. Management believes that the Company’s underwriting criteria and procedures adequately consider the unique risks associated with these products. The Company conducts a variety of quality control procedures and periodic audits, including the review of lending and legal requirements, to ensure that the Company is in compliance with these requirements.

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Foreign Outstandings

The Company’s overseas offices, which include the branch in Hong Kong and the subsidiary bank in China, are subject to the general risks inherent in conducting business in foreign countries, such as regulatory, economic and political uncertainties. As such, the Company’s international operation risk exposure is largely concentrated in China and Hong Kong. In addition, the Company’s financial assets held in the Hong Kong branch and the subsidiary bank in China may be affected by fluctuations in currency exchange rates or other factors. The following table presents the major financial assets held in the Company’s overseas offices as of September 30, 2023 and December 31, 2022:

	September 30, 2023				December 31, 2022
($ in thousands)	Amount		% of Total Consolidated Assets		Amount		% of Total Consolidated Assets
Hong Kong branch:
Cash and cash equivalents	$	543,497	1	%	$	911,784	1	%
Interest-bearing deposits with banks	$	—	—	%	$	28,772	0	%
AFS debt securities (1)	$	579,226	1	%	$	281,804	0	%
Loans held-for-investment (2)	$	862,116	1	%	$	968,450	2	%
Total assets	$	1,995,583	3	%	$	2,212,606	3	%
Subsidiary bank in China:
Cash and cash equivalents	$	603,667	1	%	$	556,656	1	%
AFS debt securities (3)	$	118,523	0	%	$	122,053	0	%
Loans held-for-investment (2)	$	1,301,045	2	%	$	1,170,437	2	%
Total assets	$	2,016,267	3	%	$	1,836,811	3	%

(1)Comprised of U.S. Treasury securities and foreign government bonds as of both September 30, 2023 and December 31, 2022.

(2)Primarily comprised of C&I loans as of both September 30, 2023 and December 31, 2022.

(3)Comprised of foreign government bonds as of both September 30, 2023 and December 31, 2022.

The following table presents the total revenue generated by the Company’s overseas offices for the third quarters and first nine months of 2023 and 2022:

($ in thousands)	Three Months Ended September 30,								Nine Months Ended September 30,
	2023				2022				2023				2022
	Amount		% of Total Consolidated Revenue		Amount		% of Total Consolidated Revenue		Amount		% of Total Consolidated Revenue		Amount		% of Total Consolidated Revenue
Hong Kong Branch:
Total revenue	$	13,906	2	%	$	14,296	2	%	$	41,479	2	%	$	32,405	2	%
Subsidiary Bank in China:
Total revenue	$	6,788	1	%	$	11,616	2	%	$	26,098	1	%	$	30,652	2	%

Capital

The Company maintains a strong capital base to support its anticipated asset growth, operating needs, and credit risks, and to ensure that the Company and the Bank are in compliance with all regulatory capital guidelines. The Company engages in regular capital planning processes on at least an annual basis to optimize the use of available capital and to appropriately plan for future capital needs, allocating capital to existing and future business activities. Furthermore, the Company conducts capital stress tests as part of its capital planning process. The stress tests enable the Company to assess the impact of adverse changes in the economy and interest rates on its capital base.

The Company’s stockholders’ equity was $6.60 billion as of September 30, 2023, an increase of $612.1 million or 10% from $5.98 billion as of December 31, 2022. The increase in the Company’s stockholders’ equity was primarily due to $922.2 million of net income, partially offset by $205.7 million of common dividends declared and $109.7 million of other comprehensive loss. For other factors that contributed to the changes in stockholders’ equity, refer to Item 1. Consolidated Financial Statements — Consolidated Statement of Changes in Stockholders’ Equity in this Form 10-Q.

89

Book value per share was $46.62 as of September 30, 2023, an increase of 10% from $42.46 per share as of December 31, 2022, primarily as a result of the factors described above. Tangible book value per share was $43.29 as of September 30, 2023, compared with $39.10 as of December 31, 2022. For additional details, see the reconciliation of non-GAAP measures presented under Item 2. MD&A — Reconciliation of GAAP to Non-GAAP Financial Measures in this Form 10-Q.

The Company paid a quarterly common stock cash dividend of $0.48 and $0.40 per share during the third quarters of 2023 and 2022, respectively. In October 2023, the Company’s Board of Directors declared fourth quarter 2023 cash dividend of $0.48 per share. The dividend is payable on November 15, 2023, to stockholders of record as of November 1, 2023. In addition, the Company publicly announced in October 2023, that the Board approved the resumption of share repurchases under the previously authorized stock repurchase plan of $500.0 million of the Company’s common stock, of which $254.0 million was available as of September 30, 2023.

Deposits and Other Sources of Funding

Deposits are the Company’s primary source of funding, the cost of which has a significant impact on the Company’s net interest income and net interest margin. Additional funding is provided by short- and long-term borrowings, and long-term debt. See Item 2. MD&A — Risk Management — Liquidity Risk Management — Liquidity in this Form 10-Q for a discussion of the Company’s liquidity management. The following table summarizes the Company’s sources of funding as of September 30, 2023 and December 31, 2022:

	September 30, 2023				December 31, 2022				Change
($ in thousands)	Amount		%		Amount		%		$		%
Deposits:
Noninterest-bearing demand	$	16,169,072	29	%	$	21,051,090	38	%	$	(4,882,018)	(23)	%
Interest-bearing checking	7,689,289		14	%	6,672,165		12	%	1,017,124		15	%
Money market	12,613,827		23	%	12,265,024		22	%	348,803		3	%
Savings	1,963,766		4	%	2,649,037		4	%	(685,271)		(26)	%
Time deposits	16,651,077		30	%	13,330,533		24	%	3,320,544		25	%
Total deposits	$	55,087,031	100	%	$	55,967,849	100	%	$	(880,818)	(2)	%
Other Funds:
Short-term borrowings	$	4,500,000	97	%	$	—	—	%	$	4,500,000	100	%
Repurchase agreements	—		—	%	300,000		67	%	(300,000)		(100)	%
Long-term debt	148,173		3	%	147,950		33	%	223		0	%
Total other funds	$	4,648,173	100	%	$	447,950	100	%	$	4,200,223	NM
Total sources of funds	$	59,735,204			$	56,415,799			$	3,319,405	6	%

NM — Not meaningful.

Deposits

The Company’s strategy is to grow and retain relationship-based deposits to provide a stable and low-cost source of funding and liquidity. Accordingly, the Company offers a wide variety of deposit products to meet the needs of its consumer and commercial customers. As a result, the Company’s deposit base is seasoned, stable and well-diversified. The following chart presents the Company’s deposits by customer segment as of September 30, 2023 and December 31, 2022.

90

Total deposits were $55.09 billion as of September 30, 2023, a decrease of $880.8 million or 2% from $55.97 billion as of December 31, 2022. The decrease in deposits was primarily driven by lower brokered deposits, partially offset by an increase in customer deposits. The Company paid down a portion of its brokered deposits as of September 30, 2023, which decreased the percentage of brokered deposits to total deposits to 4% from 6% as of December 31, 2022. Noninterest-bearing demand deposits comprised 29% and 38% of total deposits as of September 30, 2023 and December 31, 2022, respectively.

Uninsured deposits represent the portion of deposit accounts in U.S. offices that exceed the FDIC insurance limit. The Company calculates its uninsured deposits based on the methodologies and assumptions used for regulatory reporting. Total uninsured deposit balances reported on Schedule RC-OM item 2 of the Bank’s Call report were $26.46 billion and $31.04 billion as of September 30, 2023 and December 31, 2022, respectively.

The following table summarizes the Company’s uninsured deposits information as of September 30, 2023 and December 31, 2022, after certain adjustments:

($ in thousands)		September 30, 2023			December 31, 2022
Uninsured deposits, per regulatory reporting requirements		$	26,464,794		$	31,036,308
Less: Collateralized deposits		(3,826,088)			(3,780,329)
Affiliate deposits		(318,804)			(352,977)
Uninsured deposits, excluding collateralized and affiliate deposits	(a)	$	22,319,902		$	26,903,002
Total domestic deposits	(b)	$	52,602,805		$	53,225,764
Uninsured deposits, excluding collateralized and affiliate deposits ratio	(a) / (b)	42		%	51		%

Management believes that presenting uninsured deposits excluding collateralized and affiliate deposits provides a more accurate view of the deposits at risk, given that the collateralized deposits are secured, and the affiliate deposits are not customer-facing and are eliminated in consolidation. The Company’s domestic uninsured deposits, excluding collateralized and affiliate deposits ratio improved to 42% as of September 30, 2023, compared with 51% as of December 31, 2022. The Company offers an ICS product that allows customers to insure deposits above FDIC insurance limits. Increasing customer demand for the ICS product has contributed to the improvement in the uninsured deposits, excluding collateralized and affiliate deposits ratio.

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Additional information regarding the impact of deposits on net interest income, with a comparison of average deposit balances and rates, is provided in Item 2. MD&A — Results of Operations — Net Interest Income in this Form 10-Q. See also the discussion of the impact of deposits on liquidity at Item 2. MD&A — Liquidity Risk Management — Liquidity in this Form 10-Q.

Other Sources of Funding

The Company had $4.50 billion of short-term borrowings outstanding as of September 30, 2023, consisting of funds borrowed from the BTFP in March 2023. These borrowings were more cost effective than other borrowing sources and have a positive carry as cash placed at the Federal Reserve Bank. There were no short-term borrowings outstanding as of December 31, 2022. Refer to Note 10 — Short-Term Borrowings and Long-Term Debt to the Consolidated Financial Statements in this Form 10-Q for additional information on the BTFP and the Company’s related borrowings.

Repurchase agreements were $300.0 million as of December 31, 2022. The Company extinguished $300.0 million of repurchase agreements during the first quarter of 2023. The Company recorded $3.9 million of charges related to the extinguishment of repurchase agreements during the first nine months of 2023. For additional details, see Note 4 — Assets Purchased under Resale Agreements and Sold under Repurchase Agreements to the Consolidated Financial Statements in this Form 10-Q.

The Company uses long-term debt to provide funding to acquire interest-earning assets, and to enhance liquidity and regulatory capital adequacy. Long-term debt consists of junior subordinated debt, which qualifies as Tier 2 capital for regulatory capital purposes. Refer to Note 10 — Short-Term Borrowings and Long-Term Debt to the Consolidated Financial Statements in this Form 10-Q for additional information on the junior subordinated debt.

Regulatory Capital and Ratios

The federal banking agencies have risk-based capital adequacy requirements intended to ensure that banking organizations maintain capital that is commensurate with the degree of risk associated with their operations. The Company and the Bank are each subject to these regulatory capital adequacy requirements. See Item 1. Business — Supervision and Regulation — Regulatory Capital Requirements and Regulatory Capital-Related Development in the Company’s 2022 Form 10-K for additional details.

The Company adopted Accounting Standards Update 2016-13 on January 1, 2020, which requires the measurement of the allowance for credit losses to be based on management’s best estimate of lifetime expected credit losses inherent in the Company’s relevant financial assets. The Company has elected the phase-in option provided by a final rule that delays an estimate of the current expected credit losses (“CECL”) effect on regulatory capital for two years and phases in the impact over three years. The rule permits certain banking organizations to exclude from regulatory capital the initial adoption impact of CECL, plus 25% of the cumulative changes in the allowance for credit losses under CECL for each period until December 31, 2021, followed by a three-year phase-out period in which the aggregate benefit is reduced by 25% in 2022, 50% in 2023 and 75% in 2024. Accordingly, our capital ratios as of September 30, 2023 reflect a delay of 50% of the estimated impact of CECL on regulatory capital.

92

The following table presents the Company’s and the Bank’s capital ratios as of September 30, 2023 and December 31, 2022 under the Basel III Capital Rules, and those required by regulatory agencies for capital adequacy and well-capitalized classification purposes:

	Basel III Capital Rules
	September 30, 2023				December 31, 2022
	Company		Bank		Company		Bank		Minimum Regulatory Requirements		Minimum Regulatory Requirements including Capital Conservation Buffer		Well-Capitalized Requirements
Risk-based capital ratios:
Common Equity Tier 1 capital (1)	13.3	%	12.9	%	12.7	%	12.5	%	4.5	%	7.0	%	6.5	%
Tier 1 capital (1)	13.3	%	12.9	%	12.7	%	12.5	%	6.0	%	8.5	%	8.0	%
Total capital	14.7	%	14.1	%	14.0	%	13.5	%	8.0	%	10.5	%	10.0	%
Tier 1 leverage (1)	10.2	%	9.8	%	9.8	%	9.7	%	4.0	%	4.0	%	5.0	%

(1)The Common Equity Tier 1 capital and Tier 1 leverage well-capitalized requirements apply only to the Bank since there is no Common Equity Tier 1 capital component or Tier 1 leverage ratio component in the definition of a well-capitalized bank holding company. The well-capitalized Tier 1 capital ratio requirements for the Company and the Bank are 6.0% and 8.0%, respectively.

The Company is committed to maintaining strong capital levels to assure its investors, customers and regulators that the Company and the Bank are financially sound. As of both September 30, 2023 and December 31, 2022, the Company and the Bank continued to exceed all “well-capitalized” capital requirements and the required minimum capital requirements under the Basel III Capital Rules. Total risk-weighted assets were $52.95 billion as of September 30, 2023, an increase of $2.91 billion from $50.04 billion as of December 31, 2022. The increase in the risk-weighted assets was due to growth across all major loan portfolios.

Risk Management

Overview

In the normal course of business, the Company is exposed to a variety of risks, some of which are inherent to the financial services industry and others of which are more specific to the Company’s business. The Company operates under a Board-approved enterprise risk management (“ERM”) framework, which outlines the company-wide approach to risk management and oversight, and describes the structures and practices employed to manage the current and emerging risks inherent to the Company. The Company’s ERM program incorporates risk management throughout the organization in identifying, managing, monitoring, and reporting risks. It identifies the Company’s major risk categories as: credit, liquidity, capital, market, operational, compliance, legal, strategic, technology and reputational.

The Risk Oversight Committee of the Board of Directors monitors the ERM program through such identified risk categories and provides oversight of the Company’s risk appetite and control environment. The Risk Oversight Committee provides focused oversight of the Company’s identified enterprise risk categories on behalf of the full Board of Directors. Under the direction of the Risk Oversight Committee, management committees apply targeted strategies to manage the risks to which the Company’s operations are exposed.

The Company’s ERM program is executed along the three lines of defense model, which provides for a consistent and standardized risk management control environment across the enterprise. The first line of defense is comprised of production, operational and support units. The second line of defense is comprised of various risk management and control functions charged with monitoring and managing specific major risk categories and/or risk subcategories. The third line of defense is comprised of Internal Audit and Independent Asset Review (“IAR”), Internal Audit reports to the Chief Audit Executive (“CAE”) who reports to the Board’s Audit Committee. Internal Audit provides assurance and evaluates the effectiveness of risk management, control, and governance processes as established by the Company. IAR serves as an internal loan review and independent credit risk monitoring function within the Bank that works under the direction of the CAE and reports to the Board’s Risk Oversight Committee (“ROC”). IAR provides management and the ROC with an objective and independent assessment of the Bank’s credit profile and credit risk management process. Further discussion and analysis of selected primary risk areas are discussed in the following subsections of Risk Management.

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Credit Risk Management

Credit risk is the risk that a borrower or a counterparty will fail to perform according to the terms and conditions of a loan or investment and expose the Company to loss. Credit risk exists with many of the Company’s assets and exposures such as loans, debt securities and certain derivatives. The majority of the Company’s credit risk is associated with lending activities.

The Risk Oversight Committee has primary oversight responsibility for identified enterprise risk categories including credit risk. The Risk Oversight Committee monitors management’s assessment of asset quality, credit risk trends, credit quality administration, underwriting standards, and portfolio credit risk management strategies and processes, such as diversification and liquidity, all of which enable management to control credit risk. At the management level, the Credit Risk Management Committee has primary oversight responsibility for credit risk. The Senior Credit Supervision function manages credit policy for the line of business transactional credit risk, assuring that all exposure is risk-rated according to the requirements of the credit risk rating policy. The Senior Credit Supervision function evaluates and reports the overall credit risk exposure to senior management and the Risk Oversight Committee. Reporting directly to the Board’s Risk Oversight Committee, the IAR function provides additional support to the Company’s strong credit risk management culture by performing an independent and objective assessment of underwriting and documentation quality. A key focus of our credit risk management is adherence to a well-controlled underwriting and audit monitoring process.

The Company assesses the overall credit quality performance of the loans held-for-investment portfolio through an integrated analysis of specific performance ratios. This approach forms the basis of the discussion in the sections immediately following: Credit Quality, Nonperforming Assets and Allowance for Credit Losses.

Credit Quality

The Company utilizes a credit risk rating system to assist in monitoring credit quality. Loans are evaluated using the Company’s internal credit risk rating of 1 through 10. For more information on the Company’s credit quality indicators and internal credit risk ratings, refer to Note 7 — Loans Receivable and Allowance for Credit Losses to the Consolidated Financial Statements in this Form 10-Q.

The following table presents the Company’s criticized loans as of September 30, 2023 and December 31, 2022:

							Change
($ in thousands)	September 30, 2023			December 31, 2022			$		%
Criticized loans:
Special mention loans	$	483,428		$	468,471		$	14,957	3	%
Classified loans (1)	538,258			427,509			110,749		26	%
Total criticized loans (2)	$	1,021,686		$	895,980		$	125,706	14	%
Special mention loans to loans held-for-investment	0.95		%	0.97		%
Classified loans to loans held-for-investment	1.06		%	0.89		%
Criticized loans to loans held-for-investment	2.01		%	1.86		%

(1)Consists of substandard, doubtful and loss categories.

(2)Excludes loans held-for-sale.

Nonperforming Assets

Nonperforming assets are comprised of nonaccrual loans, other real estate owned (“OREO”) and other nonperforming assets. Other nonperforming assets and OREO are repossessed assets and properties, respectively, acquired through foreclosure, or through full or partial satisfaction of loans held-for-investment. Nonperforming assets were $103.7 million or 0.15% of total assets as of September 30, 2023, an increase of $3.9 million or 4%, compared with $99.8 million or 0.16% of total assets as of December 31, 2022.

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The following table presents nonperforming assets information as of September 30, 2023 and December 31, 2022:

							Change
($ in thousands)	September 30, 2023			December 31, 2022			$		%
Commercial:
C&I	$	49,147		$	50,428		$	(1,281)	(3)	%
CRE:
CRE	610			23,244			(22,634)		(97)	%
Multifamily residential	4,680			169			4,511		NM
Construction and land	11,141			—			11,141		100	%
Total CRE	16,431			23,413			(6,982)		(30)	%
Consumer:
Residential mortgage:
Single-family residential	24,784			14,240			10,544		74	%
HELOCs	13,202			11,346			1,856		16	%
Total residential mortgage	37,986			25,586			12,400		48	%
Other consumer	136			99			37		37	%
Total nonaccrual loans	103,700			99,526			4,174		4	%
OREO, net	—			270			(270)		(100)	%
Total nonperforming assets	$	103,700		$	99,796		$	3,904	4	%
Nonperforming assets to total assets	0.15		%	0.16		%
Nonaccrual loans to loans held-for-investment	0.20		%	0.21		%
Allowance for loan losses to nonaccrual loans	632.13		%	598.48		%

NM — Not meaningful.

Loans are generally placed on nonaccrual status when they become 90 days past due or when the full collection of principal or interest becomes uncertain regardless of the length of past due status. Collectability is generally assessed based on economic and business conditions, the borrower’s financial condition, and the adequacy of collateral, if any. For additional details regarding the Company’s nonaccrual loan policy, see Note 1 — Summary of Significant Accounting Policies — Significant Accounting Policies — Loans Held-for-Investment to the Consolidated Financial Statements in the Company’s 2022 Form 10-K.

Nonaccrual loans were $103.7 million as of September 30, 2023, compared with $99.8 million as of December 31, 2022. Increases in construction, multifamily and single-family residential nonaccrual loans were predominantly offset by sales of CRE nonaccrual loans. As of September 30, 2023, $40.6 million or 39% of nonaccrual loans were less than 90 days delinquent. In comparison, $68.3 million or 69% of nonaccrual loans were less than 90 days delinquent as of December 31, 2022.

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The following table presents the accruing loans past due by portfolio segment as of September 30, 2023 and December 31, 2022:

	Total Accruing Past Due Loans (1)				Change				Percentage of Total Loans Outstanding
($ in thousands)	September 30, 2023		December 31, 2022		$		%		September 30, 2023		December 31, 2022
Commercial:
C&I	$	33,427	$	9,355	$	24,072	257	%	0.21	%	0.06	%
CRE:
CRE	2,538		14,185		(11,647)		(82)	%	0.02	%	0.10	%
Multifamily residential	1,083		1,000		83		8	%	0.02	%	0.02	%
Total CRE	3,621		15,185		(11,564)		(76)	%	0.02	%	0.08	%
Total commercial	37,048		24,540		12,508		51	%	0.10	%	0.07	%
Consumer:
Residential mortgage:
Single-family residential	40,113		25,653		14,460		56	%	0.31	%	0.23	%
HELOCs	16,622		8,786		7,836		89	%	0.94	%	0.41	%
Total residential mortgage	56,735		34,439		22,296		65	%	0.39	%	0.26	%
Other consumer	126		3,192		(3,066)		(96)	%	0.20	%	4.18	%
Total consumer	56,861		37,631		19,230		51	%	0.39	%	0.28	%
Total	$	93,909	$	62,171	$	31,738	51	%	0.18	%	0.13	%

(1)There were no accruing loans past due 90 days or more as of both September 30, 2023 and December 31, 2022.

Allowance for Credit Losses

The Company maintains the allowance for credit losses at a level sufficient to provide appropriate reserves to absorb estimated future credit losses in accordance with GAAP. For additional information on the policies, methodologies and judgments used to determine the allowance for credit losses, see Item 7. MD&A — Critical Accounting Estimates and Item 8. Financial Statements — Note 1 — Summary of Significant Accounting Policies to the Consolidated Financial Statements in the Company’s 2022 Form 10-K, and Note 7 — Loans Receivable and Allowance for Credit Losses to the Consolidated Financial Statements in this Form 10-Q.

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The following table presents an allocation of the allowance for loan losses by loan portfolio segments and unfunded credit commitments as of September 30, 2023 and December 31, 2022:

	September 30, 2023						December 31, 2022
($ in thousands)	Allowance Allocation			% of Loan Type to Total Loans			Allowance Allocation			% of Loan Type to Total Loans
Allowance for loan losses
Commercial:
C&I	$	383,677		31		%	$	371,700		33		%
CRE:
CRE	178,040			29		%	149,864			29		%
Multifamily residential	24,162			10		%	23,373			10		%
Construction and land	9,216			2		%	9,109			1		%
Total CRE	211,418			41		%	182,346			40		%
Total commercial	595,095			72		%	554,046			73		%
Consumer:
Residential mortgage:
Single-family residential	54,930			25		%	35,564			23		%
HELOCs	3,795			3		%	4,475			4		%
Total residential mortgage	58,725			28		%	40,039			27		%
Other consumer	1,703			0		%	1,560			0		%
Total consumer	60,428			28		%	41,599			27		%
Total allowance for loan losses	$	655,523		100		%	$	595,645		100		%
Allowance for unfunded credit commitments	$	33,589					$	26,264
Total allowance for credit losses	$	689,112					$	621,909
Loans held-for-investment	$	50,907,184					$	48,202,430
Allowance for loan losses to loans held-for-investment	1.29		%				1.24		%
	Three Months Ended September 30,						Nine Months Ended September 30,
	2023			2022			2023			2022
Average loans held-for-investment	$	49,888,205		$	46,845,030		$	48,966,981		$	44,544,863
Annualized net charge-offs to average loans held-for-investment	0.14		%	0.06		%	0.07		%	0.02		%

Third quarter of 2023 net charge-offs were $18.1 million, or annualized 0.14% of average loans held-for-investment, compared with net charge-offs of $6.6 million, or annualized 0.06% of average loans held-for-investment for the third quarter of 2022. Net charge-offs in the first nine months of 2023 were $26.3 million or annualized 0.07% of average loans held-for-investment, compared with $8.3 million or annualized 0.02% of average loans held-for-investment for the first nine months of 2022. The increases in net charge-offs in both periods were primarily driven by higher losses in the construction and land portfolio and the CRE portfolio, as well as lower recoveries in the C&I portfolio. These increases were partially offset by lower charge-offs in the multifamily residential portfolio.

Liquidity Risk Management

Liquidity

Liquidity risk arises from the Company’s inability to meet its customer deposit withdrawals and obligations to other counterparties as they come due, or to obtain adequate funding at a reasonable cost to meet those obligations. Liquidity risk also considers the stability of deposits. The objective of liquidity management is to manage the potential mismatch of asset and liability cash flows. Maintaining an adequate level of liquidity depends on the institution’s ability to efficiently meet both expected and unexpected cash flow and collateral needs without adversely affecting daily operations or the financial condition of the institution. To achieve this objective, the Company analyzes its liquidity risk, maintains readily available liquid assets, and utilizes diverse funding sources including its stable core deposit base.

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The Board of Directors’ Risk Oversight Committee has primary oversight responsibility over liquidity risk management. At the management level, the Company’s Asset/Liability Committee (“ALCO”) establishes the liquidity guidelines that govern the day-to-day active management of the Company’s liquidity position by requiring sufficient asset-based liquidity to cover potential funding requirements and avoid over-dependence on volatile, less reliable funding markets. These guidelines are established and monitored for both the Bank and East West on a stand-alone basis to ensure that the Company can serve as a source of strength for its subsidiaries. The ALCO regularly monitors the Company’s liquidity status and related management processes, and provides regular reports on the Company’s liquidity position relative to policy limits and guidelines to the Board of Directors. The Company’s liquidity management practices have been effective under normal operating and stressed market conditions.

The Company also maintains a Liquidity Contingency Plan to detect early-warning indicators of liquidity problems and provide timely response. The Liquidity Contingency Plan describes the procedures, roles and responsibilities, and communication protocols for managing any identified liquidity problem. Management monitors the early-warning indicators defined in the Liquidity Contingency Plan, which are categorized according to their relevance to liquidity, ratings, market conditions, credit performance, or financial performance. Other indicators can include company specific or systemic events, as well as market speculation, rumors about the Company, or the banking industry in general. When early-warning signals are detected, the ALCO is informed, and the problem is evaluated for severity. The ALCO will determine the course of action and appropriate contingency funding sources, if any, that are needed.

Liquidity Risk — Liquidity Sources. The Company’s primary source of funding is from deposits generated by its banking business, which we believe is a relatively stable and low-cost source of funding. Our loans are funded by deposits, which amounted to $55.09 billion as of September 30, 2023, compared with $55.97 billion as of December 31, 2022. The Company’s loan-to-deposit ratio was 92% as of September 30, 2023, compared with 86% as of December 31, 2022.

In addition to deposits, the Company has access to various sources of wholesale financing, including borrowing capacity with the FHLB and Federal Reserve Bank of San Francisco (“FRBSF”), such as under the BTFP, unsecured federal funds lines of credit with various correspondent banks, and several master repurchase agreements with major brokerage companies to sustain an adequate liquid asset portfolio, meet daily cash demands and allow management flexibility to execute its business strategy. However, general financial market and economic conditions could impact our access and cost of external funding. Additionally, the Company’s access to capital markets is affected by the ratings received from various credit rating agencies.

Unencumbered loans and/or debt securities were pledged to the FHLB, the FRBSF discount window, and the FRBSF BTFP as collateral. The Company has established operational procedures to enable borrowing against these assets, including regular monitoring of the total pool of loans and debt securities eligible as collateral. Eligibility of collateral is defined in guidelines from the FHLB and FRBSF and is subject to change at their discretion. See Item 2 — MD&A — Balance Sheet Analysis — Deposits and Other Sources of Funding in this Form 10-Q for further details related to the Company’s funding sources. The Company believes its cash and cash equivalents and available borrowing capacity described below provide sufficient liquidity above its expected cash needs.

The Company maintains its source of liquidity in the form of cash and cash equivalents and borrowing capacity with its eligible loans and debt securities as collateral. The following table presents the Company’s total cash and cash equivalents and borrowing capacity as of September 30, 2023 and December 31, 2022:

					Change
($ in thousands)	September 30, 2023		December 31, 2022		$		%
Cash and cash equivalents	$	4,561,178	$	3,481,784	$	1,079,394	31	%
Interest-bearing deposits with banks	17,213		139,021		(121,808)		(88)	%
Borrowing capacity:
FHLB	13,715,609		12,773,996		941,613		7	%
FRBSF	8,480,896		2,049,048		6,431,848		314	%
Unpledged available securities	1,806,702		6,939,591		(5,132,889)		(74)	%
Federal funds facility	946,000		1,136,000		(190,000)		(17)	%
Total	$	29,527,598	$	26,519,440	$	3,008,158	11	%

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The Company’s total cash and cash equivalents and borrowing capacity totaled $29.53 billion as of September 30, 2023, compared with $26.52 billion as of December 31, 2022. The increase was primarily related to an increase in collateral available at the FRBSF and an increase in cash and cash equivalents, which was funded by borrowings from the BTFP in the first quarter of 2023. The BTFP borrowings were secured by pledged securities and reflected the Company’s conservative liquidity management practices in response to the volatility in the banking industry earlier in the year.

Liquidity Risk — Cash Requirements. In the ordinary course of business, the Company enters contractual obligations that require future cash payments, including funding for customer deposit withdrawals, repayments for short- and long-term borrowings, and other cash commitments. For additional information on these obligations, see Note 9 — Deposits to the Consolidated Financial Statements in the Company’s 2022 Form 10-K, and Note 4 — Assets Purchased under Resale Agreements and Sold under Repurchase Agreements, Note 8 — Investments in Qualified Affordable Housing Partnerships, Tax Credit and Other Investments, Net and Variable Interest Entities and Note 10 — Short-Term Borrowings and Long-Term Debt to the Consolidated Financial Statements in this Form 10-Q.

The Company also has off-balance sheet arrangements which represent transactions that are not recorded on the Consolidated Balance Sheet. The Company’s off-balance sheet arrangements include (1) commitments to extend credit, such as loan commitments, commercial letters of credit for foreign and domestic trade, standby letters of credit (“SBLCs”), and financial guarantees, to meet the financing needs of its customers, (2) future interest obligations related to customer deposits and the Company’s borrowings, and (3) transactions with unconsolidated entities that provide financing, liquidity, market risk or credit risk support to the Company, or engage in leasing, hedging or research and development services with the Company. Because many of these commitments are expected to expire without being drawn upon, the total commitment amounts do not necessarily represent future funding requirements. The Company does not expect the total commitment amounts as of September 30, 2023 to have a material current or future impact on the Company’s financial conditions or results of operations. Information about the Company’s loan commitments, commercial letters of credit and SBLCs is provided in Note 11 — Commitments and Contingencies to the Consolidated Financial Statements in this Form 10-Q.

The Consolidated Statement of Cash Flows summarizes the Company’s sources and uses of cash by type of activity for the nine months ended September 30, 2023 and 2022. Excess cash generated by operating and investing activities may be used to repay outstanding debt or invest in liquid assets.

Liquidity Risk — Liquidity for East West. In addition to bank level liquidity management, the Company manages liquidity at the parent company level for various operating needs including payment of dividends, repurchases of common stock, principal and interest payments on its borrowings, acquisitions and additional investments in its subsidiaries. East West’s primary source of liquidity is from cash dividends distributed by its subsidiary, East West Bank. The Bank is subject to various statutory and regulatory restrictions on its ability to pay dividends as discussed in Item 1. Business — Supervision and Regulation — Dividends and Other Transfers of Funds in the Company’s 2022 Form 10-K. East West held $263.2 million and $228.5 million in cash and cash equivalents as of September 30, 2023 and December 31, 2022, respectively. Management believes that East West has sufficient cash and cash equivalents to meet the projected cash obligations for the coming year.

Liquidity Risk — Liquidity Stress Testing. The Company utilizes liquidity stress analysis to determine the appropriate amounts of liquidity to maintain at the Company, foreign subsidiary and foreign branch to meet contractual and contingent cash outflows under a range of scenarios. Scenario analyses include assumptions about significant changes in key funding sources, market triggers, potential uses of funding and economic conditions in certain countries. In addition, Company-specific events are incorporated into the stress testing. For example, based on the Company’s analysis of the banking industry disruption earlier in 2023, deposit runoffs were assumed to be more front-loaded to trigger earlier remediation actions. Liquidity stress tests are conducted to ascertain potential mismatches between liquidity sources and uses over a variety of time horizons, both immediate and longer term, and over a variety of stressed conditions. Given the range of potential stresses, the Company maintains contingency funding plans on a consolidated basis and for individual entities.

As of September 30, 2023, the Company believes it has adequate liquidity resources to conduct operations and meet other needs in the ordinary course of business, and is not aware of any events that are reasonably likely to have a material adverse effect on its liquidity, capital resources or operations. Given the uncertain and rapidly changing market and economic conditions, the Company will continue to actively evaluate the impact on its business and financial position. For more details on how economic conditions may impact our liquidity, see Item 1A. Risk Factors in the Company’s 2022 Form 10-K.

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Market Risk Management

Market risk refers to the risk of potential loss due to adverse movements in market risk factors, including interest rates, foreign exchange rates, commodity prices, and credit spreads. The Company is primarily exposed to interest rate risk through its core business activities of extending loans and acquiring deposits. There have been no significant changes in our risk management practices as described in Item 7. MD&A — Market Risk Management in the Company’s 2022 Form 10-K.

Interest Rate Risk Management

Interest rate risk is the risk that market fluctuations in interest rates can have a negative impact on the Company’s earnings and capital stemming from mismatches in the Company’s asset and liability cash flows primarily arising from customer-related activities such as lending and deposit-taking. The Company is subject to interest rate risk because:

•Assets and liabilities may mature or reprice at different times. If assets reprice faster than liabilities and interest rates are generally rising, earnings will initially increase;

•Assets and liabilities may reprice at the same time but by different amounts;

•Short- and long-term market interest rates may change by different amounts. For example, the shape of the yield curve may affect the yield of new loans and funding costs differently;

•The remaining maturity of various assets or liabilities may shorten or lengthen as interest rates change. For example, if long-term mortgage interest rates increase sharply, mortgage-related products may pay down at a slower rate than anticipated, which could impact portfolio income and valuation; or

•Interest rates may have a direct or indirect effect on loan demand, collateral values, mortgage origination volume, and the fair value of other financial instruments.

The ALCO coordinates the overall management of the Company’s interest rate risk, meets regularly to review the Company’s open market positions and establishes policies to monitor and limit exposure to market risk. Interest rate risk management is carried out primarily through strategies involving the Company’s loan portfolio, debt securities portfolio, available funding channels and capital market activities. In addition, the Company’s policies permit the use of derivative instruments to assist in managing interest rate risk.

We measure and monitor interest rate risk exposure through various risk management tools, which include a simulation model that performs interest rate sensitivity analyses under multiple interest rate scenarios against a baseline. The simulation model incorporates the market’s forward rate expectations and the Company’s earning assets and liabilities. The Company uses both a static balance sheet and a forward growth balance sheet to perform the interest rate sensitivity analyses. The simulated interest rate scenarios include an instantaneous non-parallel shift in the yield curve and a gradual non-parallel shift in the yield curve (“rate ramp”). In addition, the Company also performs simulations using other alternative interest rate scenarios, including various permutations of the yield curve flattening, steepening or inverting. The Company uses the results of these simulations to formulate and gauge strategies to achieve a desired risk profile within its capital and liquidity guidelines.

The net interest income simulation model is based on the maturity and repricing characteristics of the Company’s interest rate sensitive assets, liabilities, and related derivative contracts. This model also incorporates various assumptions, which management believes to be reasonable but that may have a significant impact on the results. These key assumptions include the timing and magnitude of changes in interest rates, the yield curve evolution and shape, the correlation between various interest rate indices, financial instruments’ future repricing characteristics and spread relative to benchmark rates, and the effect of interest rate floors and caps. The modeled results are highly sensitive to deposit decay and deposit beta assumptions, which we derive from a regression analysis of the Company’s historical deposit data.

Simulation results are highly dependent on modeled behaviors and input assumptions. To the extent that actual behaviors are different from the assumptions used in the models, there could be material changes to the interest rate sensitivity results. The key behavioral models impacting interest rate sensitivity simulations include deposit repricing, deposit balance forecasts, and mortgage prepayments. These models and assumptions are documented, supported, and periodically back-tested to assess the reasonableness and effectiveness. The Company also regularly monitors the sensitivity of the other important modeling assumptions, such as loan and security prepayments and early withdrawal on fixed-rate customer liabilities. The Company makes appropriate calibrations to the model as needed and continually validates the model, methodology and results. Changes to key model assumptions are reviewed by the ALCO. Scenario results do not reflect strategies that the management could employ to limit the impact of changing interest rate expectations. The simulation does not represent a forecast of the Company’s net interest income but is a tool utilized to assess the risk of the impact of changing market interest rates across a range of interest rate environments.

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The Company employs a variety of quantitative and qualitative approaches to capture historical deposit repricing and balance behaviors. These historical observations are performed at a granular level based on key product characteristics, including distinctions for brokered, public, and large commercial deposits, which are then combined with forward-looking market expectations and the competitive landscape to generate the deposit repricing and balance forecasting models. The Company uses these deposit repricing models to forecast deposit interest expense. The repricing models provide sufficient granularity to reflect key behavioral differences across product and customer types. The deposit beta is a key parameter of the deposit rate forecast. The deposit beta defines the sensitivity of deposit rates to changes in the Effective Fed Funds Rate (“EFFR”).

The Company recalibrated its deposit repricing models and betas in December 2022, and qualitatively increased the long run (through the cycle) betas in March, June, and September of 2023 to better reflect increased competition and higher terminal fed funds rates than previously observed in the historical data. Overall, the Company observed a weighted average increase of the deposit beta for total deposits of approximately 5% in March 2023 (taking total deposit beta to 39% as of March 31, 2023), an additional 5% in June 2023 (taking total deposit beta to 44% as of June 30, 2023), and an additional 2% in September 2023 (taking total deposit beta to 46% as of September 30, 2023). These increases reflected the Company’s forward-looking views of deposit rates given the expected EFFR at the time. The Company also modified deposit balance runoff models in December 2022, to better capture behavioral differences across product and customer types and carved out stable and non-stable balances to reflect the volatility and interest rate sensitivity of such deposit balances. The assumptions used for the identification of stable balances were updated in June and September 2023 to reflect a larger portion of potential non-stable balances.

Additionally, to reflect changes in interest expense due to the shift from noninterest-bearing to interest-bearing accounts in the deposit mix, the Company utilized a qualitative assumption in March 2023. This assumption considered the amount of surplus noninterest-bearing deposits assumed to be rate sensitive and migrated them to interest-bearing deposits. This assumption was included in the net interest income volatility simulations to reflect more realistic net interest income volatility in rising rate scenarios. The qualitative assumption was enhanced in June 2023 with a more robust quantitative approach. This updated approach incorporated internally observed historical data reflecting the evolution of noninterest-bearing deposits as a percent of total deposits, based on the historical behavior observed during the prior rising interest rate cycle. The assumption forecasts that a portion of noninterest-bearing deposits would migrate to interest-bearing certificates of deposits as the 12-month moving average of the overnight indexed swap rate increases.

In the net interest income simulations, the Company also makes assumptions on the yield related to the re-investment of investment securities and the yields on new loan originations. These assumptions are updated quarterly to reflect recent market conditions as well as forward-looking expectations. In March 2023, loans and deposits with cash flows indexed to China related benchmark interest rates were removed from the interest rate scenario shocks, which reduced net interest income sensitivity by approximately 0.4%.

As loan and security prepayment assumptions are key components of the Company’s model, the Company incorporates third-party vendor models to forecast prepayment behavior on mortgage loans and securities which have mortgage loans as underlying collateral. These third-party vendor models have access to more comprehensive industry-level data which can capture specific borrower and collateral characteristics over a variety of interest rate cycles. The Company will periodically assess and adjust the vendor models when appropriate to include its own available observations and expectations. In March 2023, the Company updated its version of the asset liability management simulation tool and vendor prepayment model. This change updated the calibration of the vendor model to better fit recent data and better supported the transition from London Interbank Offered Rate (“LIBOR”) to Secured Overnight Financing Rate (“SOFR”) indexed loans. Overall, the update had minimal impact on forecasted prepayments. During the third quarter 2023, the Company updated the vendor prepayment model tuning factors to slow down prepayment speeds on single-family residential mortgages so that it better aligned with actual and expected prepayments.

During the third quarter 2023, the Company replaced the U.S. dollar (“USD”) LIBOR Swap curve and rates with the respective SOFR Swap and SOFR reference rates. This change had a minimal impact on the overall results of net interest income and economic value of equity (“EVE”) simulations as the overall yields and discount rates were not impacted.

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Twelve-Month Net Interest Income Simulation

Net interest income simulation modeling measures interest rate risk through earnings volatility. The simulation projects the cash flow changes in interest rate sensitive assets and liabilities, expressed in terms of net interest income, over a specified time horizon for defined interest rate scenarios. Net interest income simulations provide insight into the impact of market rate changes on earnings, which help guide risk management decisions. The Company assesses interest rate risk by comparing the changes of net interest income in different interest rate scenarios.

The following table presents the Company’s net interest income sensitivity related to an instantaneous and sustained non-parallel shift in market interest rates by 100 and 200 bps as of September 30, 2023 and December 31, 2022, on a balance sheet assuming flat forward rates and flat loan and deposit growth on the date of analysis. The non-parallel shift scenarios were calibrated internally based on historical analysis. As of December 31, 2022, the up 100 and 200 bps scenarios reflected parallel shifts due to the significant inversion of the yield curve while the down 100 and 200 bps scenarios reflected a bull steepening yield curve.

	Net Interest Income Volatility (1)
Change in Interest Rates (in bps)	September 30, 2023		December 31, 2022
+200	2.5	%	11.6	%
+100	1.6	%	5.9	%
-100	(2.3)	%	(5.3)	%
-200	(4.0)	%	(8.6)	%

(1)The percentage change represents net interest income change over a 12-month period in a stable interest rate environment versus in the various interest rate scenarios.

The composition of the Company’s loan portfolio creates sensitivity to interest rate movements due to a mismatch of repricing behavior between the floating-rate loan portfolio and deposit products. In the table above, net interest income volatility expressed in relation to base-case net interest income decreased as of September 30, 2023. This decrease reflected updates to the deposit repricing assumptions and deposit product mix. Noninterest-bearing deposit account balances are assumed to be sensitive to interest rate levels and migrate to interest-bearing deposit accounts.

The Company also models scenarios based on gradual shifts in interest rates and assesses the corresponding impacts. These interest rate scenarios provide additional information to estimate the Company’s underlying interest rate risk. The rate ramp table below shows the net interest income volatility under a gradual non-parallel shift of the yield curve, in even monthly increments over the first 12 months, followed by rates held constant thereafter based on a flat balance sheet as of the date of the analysis.

	Net Interest Income Volatility
Change in Interest Rates (in bps)	September 30, 2023		December 31, 2022
+200 Rate Ramp	1.8	%	6.3	%
+100 Rate Ramp	1.2	%	3.4	%
-100 Rate Ramp	(0.6)	%	(2.4)	%
-200 Rate Ramp	(1.7)	%	(4.9)	%

As of September 30, 2023, the Company’s net interest income profile reflects an asset sensitive position, where assets reprice faster or more significantly than liabilities. Net interest income is expected to increase when interest rates rise as the Company has a large population of variable rate loans, primarily tied to Prime and Term SOFR indices. The Company’s interest income is sensitive to changes in short-term interest rates. As of September 30, 2023, the Company designated interest rate contracts with a notional amount of $4.75 billion as cash flow hedges, which reduced net interest income volatility by approximately 2.73% of the base net interest income for every 100 bps change in interest rate.

The Company’s deposit portfolio is primarily composed of non-maturity deposits, which are not directly tied to short-term interest rate indices, but are, nevertheless, sensitive to changes in short-term interest rates. The modeled results are highly sensitive to modeled behavior and assumptions. Actual net interest income results may deviate from the model’s net interest income due to earning asset growth variation and deposit mix changes based on customer preferences relative to the interest rate environment. During a period of declining interest rates, balance sheet growth could offset headwinds to net interest income from yield compression.

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Economic Value of Equity at Risk

EVE is a cash flow calculation that takes the present value of all asset cash flows and subtracts the present value of all liability cash flows. This calculation is used for asset/liability management and measures changes in the economic value of the bank’s assets and liabilities due to changes in interest rates.

The economic value approach provides a comparatively broader scope than the net interest income volatility approach since it represents the discounted present value of cash flows over the expected life of the instruments. Due to this longer horizon, EVE is useful to identify risks arising from repricing, prepayment and maturity gaps between assets and liabilities on the balance sheet, as well as from off-balance sheet derivative exposures, over their lifetime. This long-term economic perspective into the Company’s interest rate risk profile allows the Company to identify anticipated negative effects of interest rate fluctuations. However, the difference in time horizons can cause the EVE analysis to diverge from the shorter-term net interest income analysis presented above. Given the uncertainty of the magnitude, timing and direction of future interest rate movements, the shape of the yield curve, and potential changes to the balance sheet, actual results may vary from those predicted by the Company’s model.

The following table presents the Company’s EVE sensitivity related to an instantaneous non-parallel shift in market interest rates by 100 and 200 bps as of September 30, 2023 and December 31, 2022. The non-parallel shift scenarios were calibrated internally based on historical analysis. As of December 31, 2022, the up 100 and 200 bps scenarios reflect parallel shifts due to the significant inversion of the yield curve while the down 100 and 200 bps scenarios reflect a bull steepening of the yield curve.

	EVE Volatility (1)
Change in Interest Rates (in bps)	September 30, 2023		December 31, 2022
+200	(12.3)	%	(6.0)	%
+100	(6.1)	%	(2.9)	%
-100	2.6	%	1.1	%
-200	5.5	%	2.3	%

(1)The percentage change represents net portfolio value change of the Company in a stable interest rate environment versus in the various interest rate scenarios.

As of September 30, 2023, the Company’s EVE is expected to decrease when interest rates rise. The change in EVE sensitivity was due to shorter deposit durations as a result of deposit modeling assumptions, slower prepayments on fixed-rate mortgages and mortgage-backed securities, and additional cash flow hedges to reduce net interest income volatility.

Derivatives

It is the Company’s policy not to speculate on the future direction of interest rates, foreign currency exchange rates and commodity prices. However, the Company periodically enters into derivative transactions in order to manage its exposure to market risk, primarily interest rate risk and foreign currency risk. The Company believes these derivative transactions, when properly structured and managed, provide a hedge against inherent risk in certain assets and liabilities or against risk in specific transactions. Hedging transactions may be implemented using a variety of derivative instruments such as swaps, forwards, options, and collars. The Company uses interest rate swaps to hedge the variability in interest received on certain floating-rate commercial loans and interest paid on certain floating-rate borrowings. Foreign exchange derivatives are used in net investment hedging strategies to mitigate the risk of changes in the USD equivalent value of a designated monetary amount of the Company’s net investment in East West Bank (China) Limited. Prior to entering into any accounting hedge activities, the Company analyzes the costs and benefits of the hedge in comparison to alternative strategies. The Company also repositions its hedging derivatives portfolio based on the current assessment of economic and financial conditions, including the interest rate and foreign currency environments, balance sheet composition and trends, and the relative mix of its cash and derivative positions.

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In addition, the Company enters into derivative transactions in order to accommodate its customers with their business needs or to assist customers with their risk management objectives, such as managing exposure to fluctuations in interest rates, foreign currencies and commodity prices. To economically hedge against the derivative contracts entered into with the Company’s customers, the Company enters into offsetting derivative contracts with third-party financial institutions, some of which are cleared through central clearing organizations. The exposures from derivative transactions are collateralized by cash and/or eligible securities based on limits as set forth in the respective agreements between the Company and counterparty financial institutions. The fair value changes of the derivative contracts traded with third-party financial institutions are expected to be largely comparable to the fair value changes of the derivative transactions executed with customers throughout the terms of these contracts, except for the credit valuation adjustment component in the contracts and the spread variances between the customer derivatives and the offsetting financial counterparty positions. The Company also utilizes foreign exchange contracts that are not designated as hedging instruments to mitigate the economic effect of fluctuations in certain foreign currency on-balance sheet assets and liabilities, primarily foreign currency denominated deposits offered to its customers.

The Company is subject to credit risk associated with the counterparties to the derivative contracts. This counterparty credit risk is a multi-dimensional form of risk, affected by both the exposure and credit quality of the counterparty, both of which are sensitive to market-induced changes. The Company’s Credit Risk Management Committee provides oversight of credit risk and the Company has guidelines in place to manage counterparty concentration, tenor limits, and collateral. The Company manages the credit risk of its derivative positions by diversifying its positions among various counterparties, by entering into legally enforceable master netting agreements, and by requiring collateral arrangements, where possible. The Company may also transfer counterparty credit risk related to interest rate swaps to institutional third-parties through the use of credit risk participation agreements. Certain derivative contracts are required to be cleared through central clearinghouses, to further mitigate counterparty credit risk, where variation margin is applied daily as settlement to the fair value of the derivative contracts. In addition, the Company incorporates credit value adjustments and other market standard methodologies to appropriately reflect the counterparty’s and the Company’s own nonperformance risk in the fair value measurement of its derivatives. As of September 30, 2023, the Company anticipates performance by its counterparties and has not incurred any related credit losses.

The following table summarizes certain information on derivative instruments designated as accounting hedges and utilized by the Company in its management of interest rate and foreign currency risk as of September 30, 2023 and December 31, 2022:

	September 30, 2023						December 31, 2022
($ in thousands)	Interest Rate Contracts Hedging Loans (1)				Interest Rate Contracts Hedging Borrowings (2)		Interest Rate Contracts Hedging Loans (1)				Interest Rate Contracts Hedging Borrowings (2)
Cash flow hedges
Notional amount	$	4,000,000		(3)(4)	$	—	$	3,000,000		(3)	$	200,000
Weighted average:
Receive rate	4.95		%		NA		4.91		%		3.83		%
Pay rate	7.31		%		NA		6.23		%		0.48		%
Remaining term (in months)	38.8				NA		46.6				3.2
($ in thousands)	Foreign Exchange Contracts						Foreign Exchange Contracts
Net investment hedges
Notional amount	$	81,480					$	84,832
Hedged percentage (5)	44		%				44		%
Remaining term (in months)	5.7						2.6

NA — Not applicable.

(1)Represents receive-fixed/pay-floating interest rate swaps and excludes interest rate collars. Floating rates paid are based on SOFR, or Prime.

(2)Represents receive-floating/pay-fixed interest rate swaps. Floating rate received was based on three-month LIBOR. The hedge was terminated during the first quarter of 2023.

(3)Excludes interest rate collars in total notional amount of $250.0 million as of both September 30, 2023 and December 31, 2022.

(4)Excludes forward-starting swaps in total notional amount of $750.0 million not effective as of September 30, 2023.

(5)Represents percentage between the notional of outstanding foreign exchange contracts and the net RMB exposure from East West Bank (China) Limited.

104

Additional information on the Company’s derivatives is presented in Note 1 — Summary of Significant Accounting Policies — Significant Accounting Policies — Derivatives to the Consolidated Financial Statements in the Company’s 2022 Form 10-K, Note 3 — Fair Value Measurement and Fair Value of Financial Instruments, and Note 6 — Derivatives to the Consolidated Financial Statements in this Form 10-Q.

Critical Accounting Policies and Estimates

The Company’s significant accounting policies are described in Note 1 — Summary of Significant Accounting Policies to the Consolidated Financial Statements in the Company’s 2022 Form 10-K. Certain of these policies include critical accounting estimates, which are subject to valuation assumptions, subjective or complex judgments about matters that are inherently uncertain, and it is likely that materially different amounts could be reported under different assumptions and conditions. The Company has procedures and processes in place to facilitate making these judgments. The following accounting policies are critical to the Company’s Consolidated Financial Statements:

•allowance for credit losses;

•fair value estimates;

•goodwill impairment; and

•income taxes.

For additional information on the Company’s critical accounting estimates involving significant judgments, see Item 7. MD&A — Critical Accounting Estimates in the Company’s 2022 Form 10-K.

Reconciliation of GAAP to Non-GAAP Financial Measures

To supplement the Company’s unaudited interim Consolidated Financial Statements presented in accordance with U.S. GAAP, the Company uses certain non-GAAP measures of financial performance. Non-GAAP financial measures are not prepared in accordance with, or as an alternative to U.S. GAAP. Generally, a non-GAAP financial measure is a numerical measure of a company’s performance that either excludes or includes amounts, or is subject to adjustments that have such an effect, that are not normally excluded or included in the most directly comparable financial measure that is calculated and presented in accordance with U.S. GAAP. The non-GAAP financial measures discussed in this Form 10-Q are return on average TCE, adjusted efficiency ratio, and tangible book value per share. Certain additional non-GAAP financial measures that are components of the foregoing non-GAAP financial measures are also set forth and reconciled in the table below. The Company believes these non-GAAP financial measures, when taken together with the corresponding U.S. GAAP financial measures, provide meaningful supplemental information regarding its performance, and allow comparability to prior periods. These non-GAAP financial measures may be different from non-GAAP financial measures used by other companies, limiting their usefulness for comparison purposes.

105

The following tables present the reconciliations of U.S. GAAP to non-GAAP financial measures for the periods presented:

		Three Months Ended September 30,						Nine Months Ended September 30,
($ in thousands)		2023			2022			2023			2022
Net income	(a)	$	287,738		$	295,339		$	922,208		$	791,320
Add: Amortization of core deposit intangibles		441			485			1,322			1,484
Amortization of mortgage servicing assets		328			340			1,026			1,096
Tax effect of amortization adjustments (1)		(225)			(237)			(688)			(742)
Tangible net income (non-GAAP)	(b)	$	288,282		$	295,927		$	923,868		$	793,158
Average stockholders’ equity	(c)	$	6,604,798		$	5,772,638		$	6,411,250		$	5,765,637
Less: Average goodwill		(465,697)			(465,697)			(465,697)			(465,697)
Average other intangible assets (2)		(6,148)			(8,379)			(6,916)			(8,801)
Average tangible book value (non-GAAP)	(d)	$	6,132,953		$	5,298,562		$	5,938,637		$	5,291,139
Return on average common equity (3)	(a)/(c)	17.28		%	20.30		%	19.23		%	18.35		%
Return on average TCE (3) (non-GAAP)	(b)/(d)	18.65		%	22.16		%	20.80		%	20.04		%

(1)Applied statutory tax rate of 29.29% for the third quarter and first nine months of 2023. Applied statutory tax rate of 28.77% for the third quarter and first nine months of 2022.

(2)Includes core deposit intangibles and mortgage servicing assets.

(3)Annualized.

		Three Months Ended September 30,						Nine Months Ended September 30,
($ in thousands)		2023			2022			2023			2022
Net interest income before provision for credit losses	(a)	$	570,813		$	551,809		$	1,737,420		$	1,440,374
Total noninterest income		76,752			75,552			215,361			233,739
Total revenue	(b)	$	647,565		$	627,361		$	1,952,781		$	1,674,113
Noninterest income		76,752			75,552			215,361			233,739
Add: Write-off of AFS debt security (1)		—			—			10,000			—
Adjusted noninterest income (non-GAAP)	(c)	76,752			75,552			225,361			233,739
Adjusted revenue (non-GAAP)	(a)+(c)=(d)	$	647,565		$	627,361		$	1,962,781		$	1,674,113
Total noninterest expense	(e)	$	252,014		$	215,973		$	732,250		$	602,283
Less: Amortization of tax credit and other investments		(49,694)			(19,874)			(115,718)			(48,753)
Amortization of core deposit intangibles		(441)			(485)			(1,322)			(1,484)
Repurchase agreements’ extinguishment cost (1)		—			—			(3,872)			—
Adjusted noninterest expense (non-GAAP)	(f)	$	201,879		$	195,614		$	611,338		$	552,046
Efficiency ratio	(e)/(b)	38.92		%	34.43		%	37.50		%	35.98		%
Adjusted efficiency ratio (non-GAAP)	(f)/(d)	31.18		%	31.18		%	31.15		%	32.98		%

(1)During the first quarter of 2023, the Company recorded a $10.0 million pre-tax impairment write-off of an AFS debt security. In addition, the Company prepaid $300.0 million of repurchase agreements and incurred a debt extinguishment cost of $3.9 million.

106

($ and shares in thousands, except per share data)		September 30, 2023		December 31, 2022
Stockholders’ equity	(a)	$	6,596,706	$	5,984,612
Less: Goodwill		(465,697)		(465,697)
Other intangible assets (1)		(5,649)		(7,998)
Tangible book value (non-GAAP)	(b)	$	6,125,360	$	5,510,917
Number of common shares at period-end	(c)	141,486		140,948
Book value per share	(a)/(c)	$	46.62	$	42.46
Tangible book value per share (non-GAAP)	(b)/(c)	$	43.29	$	39.10

(1)Includes core deposit intangibles and mortgage servicing assets.

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ITEM 3. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

For quantitative and qualitative disclosures regarding market risk in the Company’s portfolio, see Note 6 — Derivatives to the Consolidated Financial Statements in this Form 10-Q and Item 2. MD&A — Risk Management — Market Risk Management in this Form 10-Q.

ITEM 4. CONTROLS AND PROCEDURES

Disclosure Controls and Procedures

As of September 30, 2023, pursuant to Rule 13a-15(b) of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), the Company conducted an evaluation, under the supervision and with the participation of the Company’s management, including the Chief Executive Officer and Chief Financial Officer, of the effectiveness of the Company’s disclosure controls and procedures (as defined in Rule 13a-15(e) of the Exchange Act). Based upon 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 September 30, 2023.

The Company’s disclosure controls and procedures are designed to ensure that information required to be disclosed by the Company in the reports that the Company files or submits under the Exchange Act is recorded, processed, summarized, and reported within the time periods specified in the rules and forms of the SEC. The Company’s disclosure controls and procedures include, without limitation, controls and procedures designed to ensure that information required to be disclosed by the Company in the reports that the Company files under the Exchange Act is accumulated and communicated to the Company’s management, including the Chief Executive Officer and Chief Financial Officer, as appropriate, to allow timely decisions regarding required disclosure.

Change in Internal Control over Financial Reporting

There were no changes in the Company’s internal control over financial reporting (as defined in Rule 13a-15(f) of the Exchange Act) during the quarter ended September 30, 2023, that have materially affected or are reasonably likely to materially affect the Company’s internal control over financial reporting.

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PART II — OTHER INFORMATION

ITEM 1. LEGAL PROCEEDINGS

See Note 11 — Commitments and Contingencies — Litigation to the Consolidated Financial Statements in Part I of this Form 10-Q, incorporated herein by reference.

ITEM 1A. RISK FACTORS

The Company’s 2022 Form 10-K contains disclosure regarding the risks and uncertainties related to the Company’s business under the heading Item 1A. Risk Factors. There have been no material changes to the Company’s risk factors as presented in the Company’s 2022 Form 10-K, except as described below:

Risks Related to Our Operations

We may be impacted by the actions, soundness or creditworthiness of other financial institutions, which can cause disruption within the industry and increase expenses.

Financial services institutions are interrelated as a result of trading, clearing, counterparty, or other relationships. We execute transactions with various counterparties in the financial industry, including broker-dealers, commercial banks, and investment banks. Defaults or failures of financial services institutions and instability in the financial services industry in general can lead to market-wide liquidity problems, increased credit risk and withdrawals of uninsured deposits. The failures of Silicon Valley Bank, Signature Bank, and First Republic Bank in the first half of 2023 resulted in significant disruption in the financial services industry and negative media attention, which has also adversely impacted the volatility and market prices of the securities of financial institutions and resulted in outflows of deposits for us and many other financial institutions. These events have adversely impacted and could continue to adversely affect our business, results of operations, and financial condition, as well as the market price and volatility of our common stock.

The cost of resolving the recent bank failures is expected to lead to special assessments by the FDIC to replenish the DIF, pursuant to a rule the FDIC proposed on May 11, 2023. Such events may also increase the risk of a recession or lead to regulatory changes and initiatives that could adversely impact the Company. Changes to laws or regulations, or the impositions of additional restrictions through supervisory or enforcement activities, could have a material impact on our business. Regulatory changes could also adversely impact our ability to access funding, increase the cost of funding, limit our access to capital markets, and negatively impact our overall financial condition.

The proportion of our deposit account balances that exceed FDIC insurance limits may expose us to enhanced liquidity risk.

A significant factor in the bank failures in the first half of 2023 appears to have been the proportion of the deposits held by each institution that exceeded applicable FDIC insurance limits, and the withdrawal of such deposits over a short period of time. The ease and speed of the electronic withdrawals may accelerate this process. If a significant portion of our deposits were to be withdrawn within a short period of time such that additional sources of funding would be required to meet withdrawal demands, we may be unable to obtain funding on favorable terms, which may have an adverse effect on our net interest margin. Moreover, obtaining adequate funding to meet our deposit obligations may be more challenging during periods of elevated interest rates and financial industry instability. Our ability to attract depositors during a time of actual or perceived distress or instability in the marketplace may be limited. Further, interest rates paid for borrowing generally exceed the interest rates paid on deposits. This spread may be exacerbated by higher prevailing interest rates. In addition, because our AFS debt securities lose value when interest rates rise, our ability to cover liquidity needs from sale or pledging of these securities may be negatively impacted during periods of elevated interest rates. Under these circumstances, we may be required to access additional funding from other sources in order to manage our liquidity risk.

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ITEM 2. UNREGISTERED SALES OF EQUITY SECURITIES AND USE OF PROCEEDS

Unregistered Issuances of Equity Securities

On July 3, 2023, the Company acquired a 49.99% equity interest in Rayliant Global Advisors Limited (“Rayliant”). As consideration for this purchase, the Company paid $94.7 million in cash and granted 349,138 (target) performance restricted stock units (“PRSUs”) to the sellers of the Rayliant shares, each of whom was an “accredited investor” as such term is defined in Rule 501(a) of Regulation D (“Regulation D”) promulgated under the Securities Act of 1933, as amended (the “Securities Act”). The PRSUs vest on September 1, 2028 into a variable number of shares of the Company’s common stock, ranging from 20% to 200% of the target PRSUs granted based on certain financial performance targets achieved by Rayliant during the future performance period. The Company issued the PRSUs in reliance upon the exemptions from registration available under Section 4(a)(2) of the Securities Act and Rule 506(b) of Regulation D.

ITEM 5. OTHER INFORMATION

During the three months ended September 30, 2023, none of the Company’s directors or Section 16 reporting officers adopted or terminated any Rule 10b5-1 trading arrangement or non-Rule 10b5-1 trading arrangement (as such terms are defined in Item 408 of the SEC’s Regulation S-K).

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ITEM 6. EXHIBITS

The following exhibit index lists Exhibits filed, or in the case of Exhibits 32.1 and 32.2 furnished, with this report:

Exhibit No.	Exhibit Description
3.1	Certificate of Incorporation of the Registrant [Incorporated by reference to Exhibit 3(i) from Registrant’s Registration Statement on Form S-4 filed with the Commission on September 17, 1998 (File No. 333-63605).]
3.1.1	Certificate of Amendment to Certificate of Incorporation of the Registrant [Incorporated by reference to Exhibit 3(i).1 from Registrant’s Annual Report on Form 10-K for the year ended December 31, 2002 filed with the Commission on March 28, 2003 (File No. 000-24939).]
3.1.2	Amendment to Certificate of Incorporation to Increase Authorized Shares of the Registrant [Incorporated by reference from Registrant’s Definitive Proxy Statement on Schedule 14A filed with the Commission on April 15, 2005 (File No. 000-24939).]
3.1.3	Certificate of Amendment to Certificate of Incorporation of the Registrant [Incorporated by reference to Exhibit A from Registrant’s Definitive Proxy Statement on Schedule 14A filed with the Commission on April 23, 2008 (File No. 000-24939).]
3.1.4	Certificate of Designations of 8.00% Non-Cumulative Perpetual Convertible Preferred Stock, Series A of the Registrant [Incorporated by reference to Exhibit 3.1 from Registrant’s Current Report on Form 8-K, filed with the Commission on April 30, 2008 (File No. 000-24939).]
3.1.5	Certificate of Designations of Fixed Rate Cumulative Perpetual Preferred Stock, Series B of the Registrant [Incorporated by reference to Exhibit 3.1, 4.1 from Registrant’s Current Report on Form 8-K filed with the Commission on December 9, 2008 (File No. 000-24939).]
3.1.6	Certificate of Designations of Mandatorily Convertible Cumulative Non-Voting Perpetual Preferred Stock, Series C of the Registrant [Incorporated by reference to Exhibit 3.1, 4.1 from Registrant’s Current Report on Form 8-K filed with the Commission on November 12, 2009 (File No. 000-24939).]
3.2	Amended and Restated Bylaws of the Registrant dated March 14, 2023 [Incorporated by reference to Exhibit 3.1 from Registrant’s Current Report on Form 8-K filed with the Commission on March 17, 2023 (File No. 000-24939).]
31.1	Certification of Chief Executive Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002. Filed herewith.
31.2	Certification of Chief Financial Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002. Filed herewith.
32.1	Certification of Chief Executive Officer pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002. Furnished herewith.
32.2	Certification of Chief Financial Officer pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002. Furnished herewith.
101.INS	The instance document does not appear in the interactive data file because its XBRL tags are embedded within the inline XBRL document.
101.SCH	Inline XBRL Taxonomy Extension Schema Document. Filed herewith.
101.CAL	Inline XBRL Taxonomy Extension Calculation Linkbase Document. Filed herewith.
101.DEF	Inline XBRL Taxonomy Extension Definition Linkbase Document. Filed herewith.
101.LAB	Inline XBRL Taxonomy Extension Label Linkbase Document. Filed herewith.
101.PRE	Inline XBRL Taxonomy Extension Presentation Linkbase Document. Filed herewith.
104	Cover Page Interactive Data (formatted as Inline XBRL and contained in Exhibit 101 filed herewith). Filed herewith.

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GLOSSARY OF ACRONYMS

AFS	Available-for-sale	HELOC	Home equity lines of credit
ALCO	Asset/Liability Committee	HTM	Held-to-maturity
AOCI	Accumulated other comprehensive (loss) income	IAR	Independent Asset Review
ASC	Accounting Standards Codification	ICS	Insured cash sweep
ASU	Accounting Standards Update	IDI	Insured deposit institution
BTFP	Bank Term Funding Program	LCH	London Clearing House
C&I	Commercial and industrial	LGD	Loss given default
CCDAA	Climate Corporate Data Accountability Act	LIBOR	London Interbank Offered Rate
CECL	Current expected credit losses	LTV	Loan-to-value
CFPB	Consumer Financial Protection Bureau	MD&A	Management’s Discussion and Analysis of Financial Condition and Results of Operations
CLO	Collateralized loan obligations	MMBTU	Million British thermal unit
CME	Chicago Mercantile Exchange	NAV	Net asset value
CRA	Community Reinvestment Act	NRSRO	Nationally recognized statistical rating organizations
CRE	Commercial real estate	OREO	Other real estate owned
CRFRA	Climate-Related Financial Risk Act	PD	Probability of default
DIF	Deposit Insurance Fund	PRSU	Performance restricted stock unit
EFFR	Effective Federal Funds Rate	RMB	Chinese Renminbi
EPS	Earnings per share	ROA	Return on average assets
ERM	Enterprise risk management	ROC	Risk Oversight Committee
EVE	Economic value of equity	ROE	Return on average equity
FASB	Financial Accounting Standards Board	RPA	Credit risk participation agreement
FDIC	Federal Deposit Insurance Corporation	RSU	Restricted stock unit
FHLB	Federal Home Loan Bank	SBLC	Standby letters of credit
FIL	Financial Institution Letter	SEC	U.S. Securities and Exchange Commission
FRBSF	Federal Reserve Bank of San Francisco	SOFR	Secured Overnight Financing Rate
FTP	Funds transfer pricing	TCE	Tangible Common Equity
GAAP	Generally Accepted Accounting Principles	TDR	Troubled debt restructuring
GDP	Gross Domestic Product	U.S.	United States
GHG	Greenhouse gas	USD	U.S. dollar

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SIGNATURE

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.

Dated:	November 8, 2023
		EAST WEST BANCORP, INC. (Registrant)
		By	/s/ Christopher J. Del Moral-Niles
			Christopher J. Del Moral-Niles
			Executive Vice President and Chief Financial Officer

113

EX-31.1

Exhibit 31.1

CERTIFICATION

CERTIFICATION PURSUANT TO SECTION 302

OF THE SARBANES-OXLEY ACT OF 2002

FOR THE CHIEF EXECUTIVE OFFICER

I, Dominic Ng, certify that:

1.I have reviewed this Quarterly Report on Form 10-Q of East West Bancorp, Inc. (the “registrant”);

2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3.Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4.The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a.Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b.Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c.Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d.Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5.The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a.All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b.Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: November 8, 2023

/s/ DOMINIC NG

Dominic Ng

Chief Executive Officer

EX-31.2

Exhibit 31.2

CERTIFICATION

CERTIFICATION PURSUANT TO SECTION 302

OF THE SARBANES-OXLEY ACT OF 2002

FOR THE CHIEF FINANCIAL OFFICER

I, Christopher J. Del Moral-Niles, certify that:

1.I have reviewed this Quarterly Report on Form 10-Q of East West Bancorp, Inc. (the “registrant”);

2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3.Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4.The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a.Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b.Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c.Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d.Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5.The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a.All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b.Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: November 8, 2023

/s/ CHRISTOPHER J. DEL MORAL-NILES

Christopher J. Del Moral-Niles

Chief Financial Officer

EX-32.1

Exhibit 32.1

CERTIFICATION

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report of East West Bancorp, Inc. (the “Company”) on Form 10-Q for the period ended September 30, 2023, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Dominic Ng, Chairman and Chief Executive Officer of the Company, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, based on my knowledge that:

a.the Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

b.the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Date: November 8, 2023

/s/ DOMINIC NG

Dominic Ng

Chief Executive Officer

EX-32.2

Exhibit 32.2

CERTIFICATION

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report of East West Bancorp, Inc. (the “Company”) on Form 10-Q for the period ended September 30, 2023, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I,  Christopher J. Del Moral-Niles, Executive Vice President and Chief Financial Officer of the Company, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, based on my knowledge that:

a.the Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

b.the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Date: November 8, 2023

/s/ CHRISTOPHER J. DEL MORAL-NILES

Christopher J. Del Moral-Niles

Chief Financial Officer

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Cover Page - shares	9 Months Ended
	Sep. 30, 2023	Oct. 31, 2023
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2023
Document Transition Report	false
Entity File Number	000-24939
Entity Registrant Name	EAST WEST BANCORP, INC.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	95-4703316
Entity Address, Address Line One	135 North Los Robles Ave.
Entity Address, Address Line Two	7th Floor
Entity Address, City or Town	Pasadena
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	91101
City Area Code	626
Local Phone Number	768-6000
Title of each class	Common Stock, par value $0.001 per share
Trading Symbol	EWBC
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		140,930,142
Entity Central Index Key	0001069157
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2023
Document Fiscal Period Focus	Q3
Amendment Flag	false

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CONSOLIDATED BALANCE SHEET - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
ASSETS
Cash and due from banks	$ 495,976	$ 534,980
Interest-bearing cash with banks	4,065,202	2,946,804
Cash and cash equivalents	4,561,178	3,481,784
Interest-bearing deposits with banks	17,213	139,021
Assets purchased under resale agreements (“resale agreements”)	785,000	792,192
Securities:
Available-for-sale (“AFS”) debt securities, at fair value (amortized cost of $6,976,331 and $6,879,225)	6,039,837	6,034,993
Held-to-maturity (“HTM”) debt securities, at amortized cost (fair value of $2,308,048 and $2,455,171)	2,964,235	3,001,868
Loans held-for-sale	4,762	25,644
Loans held-for-investment (net of allowance for loan losses of $655,523 and $595,645)	50,251,661	47,606,785
Investments in qualified affordable housing partnerships, tax credit and other investments, net	901,559	763,256
Premises and equipment (net of accumulated depreciation of $155,043 and $148,126)	87,888	89,191
Goodwill	465,697	465,697
Operating lease right-of-use assets	97,782	103,681
Other assets	2,112,646	1,608,038
TOTAL	68,289,458	64,112,150
Deposits:
Noninterest-bearing	16,169,072	21,051,090
Interest-bearing	38,917,959	34,916,759
Total deposits	55,087,031	55,967,849
Short-term borrowings	4,500,000	0
Assets sold under repurchase agreements (“repurchase agreements”)	0	300,000
Long-term debt and finance lease liabilities	153,087	152,400
Operating lease liabilities	107,695	111,931
Accrued expenses and other liabilities	1,844,939	1,595,358
Total liabilities	61,692,752	58,127,538
COMMITMENTS AND CONTINGENCIES (Note 11)
STOCKHOLDERS’ EQUITY
Common stock, $0.001 par value, 200,000,000 shares authorized; 169,316,546 and 168,459,045 shares issued	169	168
Additional paid-in capital	1,969,239	1,936,389
Retained earnings	6,294,751	5,582,546
Treasury stock, at cost 27,830,597 and 27,511,199 shares	(792,076)	(768,862)
Accumulated other comprehensive loss (“AOCI”), net of tax	(875,377)	(765,629)
Total stockholders’ equity	6,596,706	5,984,612
TOTAL	$ 68,289,458	$ 64,112,150

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CONSOLIDATED BALANCE SHEET (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
ASSETS
AFS debt securities, amortized cost	$ 6,976,331	$ 6,879,225
HTM debt securities, fair value	2,308,048	2,455,171
Allowance for loan losses	655,523	595,645
Premises and equipment, accumulated depreciation	$ 155,043	$ 148,126
STOCKHOLDERS’ EQUITY
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized (in shares)	200,000,000	200,000,000
Common stock, shares issued (in shares)	169,316,546	168,459,045
Treasury stock, shares (in shares)	27,830,597	27,511,199

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CONSOLIDATED STATEMENT OF INCOME - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
INTEREST AND DIVIDEND INCOME
Loans receivable, including fees	$ 818,719	$ 560,452	$ 2,318,369	$ 1,376,978
Debt securities	69,778	51,092	204,679	139,935
Resale agreements	4,460	6,769	12,932	23,705
Restricted equity securities	1,079	843	3,054	2,274
Interest-bearing cash and deposits with banks	67,751	9,080	164,393	17,127
Total interest and dividend income	961,787	628,236	2,703,427	1,560,019
INTEREST EXPENSE
Deposits	338,296	68,894	842,567	104,371
Federal funds purchased and other short-term borrowings	49,575	1,177	107,432	1,427
Federal Home Loan Bank (“FHLB”) advances	0	392	6,430	1,529
Repurchase agreements	193	4,421	1,456	8,855
Long-term debt and finance lease liabilities	2,910	1,543	8,122	3,463
Total interest expense	390,974	76,427	966,007	119,645
Net interest income before provision for credit losses	570,813	551,809	1,737,420	1,440,374
Provision for credit losses	42,000	27,000	88,000	48,500
Net interest income after provision for credit losses	528,813	524,809	1,649,420	1,391,874
NONINTEREST INCOME
Lending fees	20,312	20,289	61,799	59,869
Deposit account fees	22,622	23,636	66,610	66,323
Interest rate contracts and other derivative income	11,208	8,761	21,145	29,695
Foreign exchange income	12,334	10,083	38,245	34,143
Wealth management fees	5,877	8,903	19,070	21,494
Net (losses) gains on sales of loans	(12)	2,129	(41)	5,968
Net (losses) gains on AFS debt securities	0	0	(10,000)	1,306
Other investment income (loss)	1,751	(580)	7,675	5,910
Other income	2,660	2,331	10,858	9,031
Total noninterest income	76,752	75,552	215,361	233,739
NONINTEREST EXPENSE
Compensation and employee benefits	123,153	127,580	377,744	357,213
Occupancy and equipment expense	15,353	15,920	47,028	46,853
Deposit insurance premiums and regulatory assessments	8,583	4,875	24,755	14,519
Deposit account expense	11,585	6,707	31,753	17,071
Data processing	3,645	3,725	10,205	10,876
Computer software expense	8,116	6,889	22,955	20,755
Other operating expense	31,885	30,403	102,092	86,243
Amortization of tax credit and other investments	49,694	19,874	115,718	48,753
Noninterest expense	252,014	215,973	732,250	602,283
INCOME BEFORE INCOME TAXES	353,551	384,388	1,132,531	1,023,330
INCOME TAX EXPENSE	65,813	89,049	210,323	232,010
NET INCOME	$ 287,738	$ 295,339	$ 922,208	$ 791,320
EARNINGS PER SHARE (“EPS”)
BASIC (in dollars per share)	$ 2.03	$ 2.10	$ 6.52	$ 5.59
DILUTED (in dollars per share)	$ 2.02	$ 2.08	$ 6.49	$ 5.55
WEIGHTED-AVERAGE NUMBER OF SHARES OUTSTANDING
BASIC (in shares)	141,485	140,917	141,356	141,453
DILUTED (in shares)	142,122	142,011	142,044	142,601

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CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Statement of Comprehensive Income [Abstract]
Net income	$ 287,738	$ 295,339	$ 922,208	$ 791,320
Other comprehensive loss, net of tax:
Net changes in unrealized losses on AFS debt securities	(72,691)	(161,445)	(64,990)	(523,593)
Reclassification of unrealized losses on debt securities transferred from AFS to HTM	0	0	0	(112,991)
Amortization of unrealized losses on debt securities transferred from AFS to HTM	2,870	3,256	8,448	9,317
Net changes in unrealized losses on cash flow hedges	(27,334)	(33,269)	(52,608)	(64,372)
Foreign currency translation adjustments	3,710	(7,926)	(598)	(18,012)
Other comprehensive loss	(93,445)	(199,384)	(109,748)	(709,651)
COMPREHENSIVE INCOME	$ 194,293	$ 95,955	$ 812,460	$ 81,669

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CONSOLIDATED STATEMENT OF CHANGES IN STOCKHOLDERS’ EQUITY - USD ($) $ in Thousands		Total	Cumulative Effect, Period Of Adoption, Adjustment	Various Stock Compensation Plans And Agreements	Stock Repurchase Plan	Common Stock	Common Stock Various Stock Compensation Plans And Agreements	Common Stock Stock Repurchase Plan	Common Stock and Additional Paid-in Capital	Retained Earnings	Retained Earnings Cumulative Effect, Period Of Adoption, Adjustment	Treasury Stock	Treasury Stock Various Stock Compensation Plans And Agreements	AOCI, Net of Tax
Beginning balance (in shares) at Dec. 31, 2021						141,907,954
Beginning balance at Dec. 31, 2021		$ 5,837,218							$ 1,893,725	$ 4,683,659		$ (649,785)		$ (90,381)
Increase (Decrease) in Stockholders' Equity
Net income		791,320								791,320
Other comprehensive loss		(709,651)												(709,651)
Issuance of common stock pursuant to various stock compensation plans and agreements (in shares)						640,053
Issuance of common stock pursuant to various stock compensation plans and agreements		32,836							32,836
Repurchase of common stock pursuant to the Stock Repurchase Program/various stock compensation plans and agreements (in shares)							(244,978)	(1,385,517)
Repurchase of common stock pursuant to the Stock Repurchase Program/various stock compensation plans and agreements				$ (18,983)	$ (99,990)								$ (18,983)
Cash dividends on common stock		(172,082)								(172,082)
Ending balance (in shares) at Sep. 30, 2022						140,917,512
Ending balance at Sep. 30, 2022		5,660,668							1,926,561	5,302,897		(768,758)		(800,032)
Beginning balance (in shares) at Jun. 30, 2022						140,917,389
Beginning balance at Jun. 30, 2022		5,609,482							1,914,232	5,064,650		(768,752)		(600,648)
Increase (Decrease) in Stockholders' Equity
Net income		295,339								295,339
Other comprehensive loss		(199,384)												(199,384)
Issuance of common stock pursuant to various stock compensation plans and agreements (in shares)						206
Issuance of common stock pursuant to various stock compensation plans and agreements		12,329							12,329
Repurchase of common stock pursuant to the Stock Repurchase Program/various stock compensation plans and agreements (in shares)							(83)
Repurchase of common stock pursuant to the Stock Repurchase Program/various stock compensation plans and agreements				(6)									(6)
Cash dividends on common stock		(57,092)								(57,092)
Ending balance (in shares) at Sep. 30, 2022						140,917,512
Ending balance at Sep. 30, 2022		5,660,668							1,926,561	5,302,897		(768,758)		(800,032)
Beginning balance (in shares) at Dec. 31, 2022						140,947,846
Beginning balance at Dec. 31, 2022		5,984,612							1,936,557	5,582,546		(768,862)		(765,629)
Beginning balance (Accounting Standards Update 2022-02) at Dec. 31, 2022	[1]		$ (4,262)								$ (4,262)
Increase (Decrease) in Stockholders' Equity
Net income		922,208								922,208
Other comprehensive loss		(109,748)												(109,748)
Issuance of common stock pursuant to various stock compensation plans and agreements (in shares)						857,501
Issuance of common stock pursuant to various stock compensation plans and agreements		32,851							32,851
Repurchase of common stock pursuant to the Stock Repurchase Program/various stock compensation plans and agreements (in shares)							(319,398)
Repurchase of common stock pursuant to the Stock Repurchase Program/various stock compensation plans and agreements				(23,214)									(23,214)
Cash dividends on common stock		(205,741)								(205,741)
Ending balance (in shares) at Sep. 30, 2023						141,485,949
Ending balance at Sep. 30, 2023		6,596,706							1,969,408	6,294,751		(792,076)		(875,377)
Beginning balance (in shares) at Jun. 30, 2023						141,483,668
Beginning balance at Jun. 30, 2023		6,461,697							1,959,784	6,075,735		(791,890)		(781,932)
Increase (Decrease) in Stockholders' Equity
Net income		287,738								287,738
Other comprehensive loss		(93,445)												(93,445)
Issuance of common stock pursuant to various stock compensation plans and agreements (in shares)						5,682
Issuance of common stock pursuant to various stock compensation plans and agreements		9,624							9,624
Repurchase of common stock pursuant to the Stock Repurchase Program/various stock compensation plans and agreements (in shares)							(3,401)
Repurchase of common stock pursuant to the Stock Repurchase Program/various stock compensation plans and agreements				$ (186)									$ (186)
Cash dividends on common stock		(68,722)								(68,722)
Ending balance (in shares) at Sep. 30, 2023						141,485,949
Ending balance at Sep. 30, 2023		$ 6,596,706							$ 1,969,408	$ 6,294,751		$ (792,076)		$ (875,377)

[1] Represents the change in the Company’s allowance for loan losses as a result of the adoption of Accounting Standards Update (“ASU”) 2022-02, Financial Instruments - Credit Losses (Topic 326): Troubled Debt Restructurings and the Vintage Disclosures on January 1, 2023. Refer to Note 2 — Current Accounting Developments and Summary of Significant Accounting Policies in this Form 10-Q for additional information.

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CONSOLIDATED STATEMENT OF CHANGES IN STOCKHOLDERS’ EQUITY (Parenthetical) - $ / shares	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Statement of Stockholders' Equity [Abstract]
Dividends declared per common share (in dollars per share)	$ 0.48	$ 0.40	$ 1.44	$ 1.20

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CONSOLIDATED STATEMENT OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 922,208	$ 791,320
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	174,856	81,980
Amortization of premiums and accretion of discount, net	(15,740)	26,336
Stock compensation costs	29,934	29,338
Deferred income tax expense (benefit)	1,083	(6,107)
Provision for credit losses	88,000	48,500
Net losses (gains) on sales of loans	41	(5,968)
Net losses (gains) on AFS debt securities	10,000	(1,306)
Loans held-for-sale:
Originations and purchases	0	(447)
Proceeds from sales and paydowns/payoffs of loans originally classified as held-for-sale	0	461
Proceeds from distributions received from equity method investees	3,727	5,642
Net change in accrued interest receivable and other assets	(361,324)	56,958
Net change in accrued expenses and other liabilities	11,641	584,655
Other operating activities, net	(1,204)	5,057
Total adjustments	(58,986)	825,099
Net cash provided by operating activities	863,222	1,616,419
Net change in:
Investments in qualified affordable housing partnerships, tax credit and other investments	(154,309)	(91,710)
Interest-bearing deposits with banks	121,730	105,479
Resale agreements:
Proceeds from paydowns and maturities	219,917	1,719,076
Purchases	(212,725)	(258,559)
AFS debt securities:
Proceeds from sales	0	129,181
Proceeds from repayments, maturities and redemptions	877,377	711,950
Purchases	(1,011,326)	(769,007)
HTM debt securities:
Proceeds from repayments, maturities and redemptions	49,649	60,140
Purchases	0	(50,000)
Loans held-for-investment:
Proceeds from sales of loans originally classified as held-for-investment	528,056	453,315
Purchases	(433,228)	(599,660)
Other changes in loans held-for-investment, net	(2,794,119)	(5,675,012)
Proceeds from distributions received from equity method investees	16,614	13,557
Other investing activities, net	(105,258)	920
Net cash used in investing activities	(2,897,622)	(4,250,330)
CASH FLOWS FROM FINANCING ACTIVITIES
Net change in deposits	(840,367)	623,025
Net change in short-term borrowings	4,500,017	200,006
FHLB advances:
Proceeds	6,000,000	4,600,200
Repayment	(6,000,000)	(4,525,200)
Repurchase agreements:
Proceeds from repurchase agreements	0	311,785
Repayment of repurchase agreements	(300,000)	0
Repurchase agreements’ extinguishment cost	(3,872)	0
Long-term debt and lease liabilities:
Repayment of long-term debt and lease liabilities	(637)	(710)
Common stock:
Repurchase of common stocks pursuant to the Stock Repurchase Program	0	(99,990)
Proceeds from issuance pursuant to various stock compensation plans and agreements	1,563	1,444
Stock tendered for payment of withholding taxes	(23,214)	(18,983)
Cash dividends paid	(206,848)	(171,991)
Net cash provided by financing activities	3,126,642	919,586
Effect of exchange rate changes on cash and cash equivalents	(12,848)	(35,257)
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	1,079,394	(1,749,582)
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	3,481,784	3,912,935
CASH AND CASH EQUIVALENTS, END OF PERIOD	4,561,178	2,163,353
Cash paid during the period for:
Interest	852,315	107,146
Income taxes, net	284,347	233,082
Noncash investing and financing activities:
Securities transferred from AFS to HTM debt securities	0	3,010,003
Loans transferred from held-for-investment to held-for-sale	$ 507,215	$ 463,769

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Basis of Presentation

9 Months Ended

Sep. 30, 2023

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Basis of Presentation

Basis of Presentation

East West Bancorp, Inc. is a registered bank holding company that offers a full range of banking services to individuals and businesses through its subsidiary bank, East West Bank and its subsidiaries (“East West Bank” or the “Bank”). The unaudited interim Consolidated Financial Statements in this Form 10-Q include the accounts of East West, East West Bank and East West’s subsidiaries. Intercompany transactions and accounts have been eliminated in consolidation. As of September 30, 2023, East West also has six wholly-owned subsidiaries that are statutory business trusts (the “Trusts”). In accordance with FASB Accounting Standards Codification (“ASC”) Topic 810, Consolidation, the Trusts are not included on the Consolidated Financial Statements.

The unaudited interim Consolidated Financial Statements are presented in accordance with U.S. Generally Accepted Accounting Principles (“GAAP”), applicable guidelines prescribed by regulatory authorities and general practices in the banking industry. While the unaudited interim Consolidated Financial Statements reflect all adjustments that, in the opinion of management, are necessary for fair presentation, they primarily serve to update the most recently filed annual report on Form 10-K, and may not include all the information and notes necessary to constitute a complete set of financial statements. Accordingly, they should be read in conjunction with the audited Consolidated Financial Statements and notes thereto included in the Company’s 2022 Form 10-K.

The preparation of the Consolidated Financial Statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities as of the date of the Consolidated Financial Statements, income and expenses during the reporting periods, and the related disclosures. Although our estimates consider current conditions and how we expect them to change in the future, it is reasonably possible that actual results could be materially different from those estimates. Hence, the current period’s results of operations are not necessarily indicative of results that may be expected for any future interim period or for the year as a whole. Events subsequent to the Consolidated Balance Sheet date have been evaluated through the date the Consolidated Financial Statements are issued for inclusion in the accompanying Consolidated Financial Statements.

Risk and Uncertainties

The failures of Silicon Valley Bank, Signature Bank and First Republic Bank earlier in the year have resulted in significant disruption in the financial services industry, which has adversely impacted the volatility and market prices of the securities of financial institutions. In addition, these bank failures have caused concern and uncertainty regarding the liquidity of the banking sector as a whole and resulted in some regional bank customers choosing to maintain deposits with larger financial institutions. Further, competition for deposits has increased in recent periods, and the cost of funding has similarly increased, putting pressure on our net interest margin. These events have adversely impacted, and could continue to adversely affect, our business, results of operations, and financial condition, as well as the market price and volatility of our common stock.

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Current Accounting Developments and Summary of Significant Accounting Policies

9 Months Ended

Sep. 30, 2023

Accounting Policies [Abstract]

Current Accounting Developments and Summary of Significant Accounting Policies

Current Accounting Developments and Summary of Significant Accounting Policies

Accounting Pronouncements Adopted in 2023

Standard	Required Date of Adoption	Description	Effect on Financial Statements
ASU 2022-02, Financial Instruments —Credit Losses (Topic 326): Troubled Debt Restructurings and the Vintage Disclosures	January 1, 2023 Early adoption is permitted	ASU 2022-02 eliminates the •accounting guidance for troubled debt restructurings (“TDR”), and requires the Company to apply the loan refinancing and restructuring guidance to determine whether a modification made to a loan results in a new loan or a continuation of an existing loan; and •requirement to use a discounted cash flow method to measure receivables. The guidance also requires •enhanced disclosures for certain loan refinancings and restructurings by creditors when the borrower is experiencing financial difficulty; and •vintage disclosures of current period gross charge-offs (on a current year-to-date basis) by year of loan origination for financing receivables and net investments in leases within the scope of ASC 326-20: Financial Instruments — Credit Losses — Measured at Amortized Cost.	The Company adopted ASU 2022-02 on January 1, 2023 on a prospective basis, except for the guidance related to the elimination of TDR recognition and measurement, which was adopted on a modified retrospective approach. This adoption increased the allowance for loan losses on TDRs as of December 31, 2022 by $6.0 million and decreased opening retained earnings on January 1, 2023 by $4.3 million after-tax. Disclosures as of September 30, 2023 are presented in accordance with this guidance while prior year amounts are reported in accordance with previously applicable GAAP.

Recent Accounting Pronouncements Yet to be Adopted

Standard	Required Date of Adoption	Description	Effect on Financial Statements
Standards Not Yet Adopted
ASU 2023-01, Leases (Topic 842): Common Control Arrangements	January 1, 2024 Early adoption is permitted	ASU 2023-01 amends the accounting for leasehold improvements for leases between entities under common control arrangements. The guidance requires leasehold improvements associated with leases between companies under common control to be amortized by a lessee over the economic life of the leasehold improvements, regardless of the lease term or, until the lessee ceases to control the use of the underlying asset through a lease, at which time the remaining value of the leasehold improvement would be accounted for as a transfer between companies under common control through an adjustment to equity. The amendments in this guidance may be applied retrospectively to the beginning of the period in which the entity first applied Topic 842 or prospectively (1) to all new leasehold improvements recognized on or after the date the entity first applies the amendments, or (2) to all new and existing leasehold improvements recognized on or after the date the entity first applies the amendments.	The Company does not expect the adoption of this guidance to have a material impact on the Company’s Consolidated Financial Statements. The Company expects to adopt ASU 2023-01 on January 1, 2024 on a prospective basis.
ASU 2023-02, Investments — Equity Method and Joint Ventures (Topic 323): Accounting for Investments in Tax Credit Structures Using the Proportional Amortization Method	January 1, 2024 Early adoption is permitted	ASU 2023-02 expands the scope of the proportional amortization method to equity tax credit investment programs if certain conditions are met. Previously, the proportional amortization method could only be used for investments in low-income housing tax credit structures. Under this guidance, companies are able to elect, on a tax credit program-by-tax credit program basis, to apply the proportional amortization method to all equity investments meeting the criteria in ASC 323-740-25-1. The amendments in this guidance must be applied on a modified retrospective or a retrospective basis.	The Company is currently evaluating the impact of this guidance on the Company’s Consolidated Financial Statements.
ASU 2023-05, Business Combinations — Joint Venture Formations (Subtopic 805-60): Recognition and Initial Measurement	January 1, 2025 Early adoption is permitted	ASU 2023-05 requires a joint venture to recognize and initially measure assets contributed to the joint venture in a formation transaction to be measured at fair value. Under this guidance, the initial formation of the joint venture would trigger a new basis of accounting and recognize contributed net assets generally at fair value as of the joint venture’s formation date. The excess of the fair value of the joint venture’s outstanding equity interests over the fair value of its identifiable assets and liabilities is recognized as goodwill, regardless of whether the joint venture meets the definition of a business in its stand-alone financial statements, and measure its contributed total net assets upon formation as the fair value of the joint venture as a whole, which would equal the fair value of 100% of the joint venture’s outstanding equity interests. The guidance also allows a joint venture to apply the measurement period guidance, which is largely consistent with the acquisition method for business combination in ASC 805-10. The guidance also introduces new disclosure requirements related to the nature and financial effect of the joint venture. The amendments in this guidance are effective prospectively for all joint venture formations with a formation date on or after January 1, 2025. Additionally, joint ventures that were formed before January 1, 2025 may elect to apply the amendments retrospectively if sufficient information exists.	The Company does not expect the adoption of this guidance to have a material impact on the Company’s Consolidated Financial Statements. The Company expects to adopt ASU 2023-05 on January 1, 2025.

Significant Accounting Policies Update

Loan Modifications — Certain loans are modified in the normal course of business for competitive reasons or in conjunction with the Company’s loss mitigation activities. Upon the adoption of ASU 2022-02, the Company applies the general loan modification guidance provided in ASC 310-20 to all loan modifications, including modifications made to borrowers experiencing financial difficulty. Under the general loan modification guidance, a modification is treated as a new loan only if the following two conditions are met: (1) the terms of the new loan are at least as favorable to the Company as the terms for comparable loans to other customers with similar collection risks; and (2) modifications to the terms of the original loan are more than minor. If either condition is not met, the modification is accounted for as a continuation of the existing loan with any effect of the modification treated as a prospective adjustment to the loan’s effective interest rate. A modification made to borrowers experiencing financial difficulty may vary by program and by borrower-specific characteristics, and may include rate reductions, principal forgiveness, term extensions, and payment delays, and is intended to minimize the Company’s economic loss and to avoid foreclosure or repossession of collateral. The Company applies the same credit loss methodology it uses for similar loans that were not modified. For the Company’s accounting policy related to the loan modifications’ allowance for loan losses, see Note 7 — Loans Receivable and Allowance for Credit Losses — Allowance for Credit Losses to the Consolidated Financial Statements in this Form 10-Q.

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Fair Value Measurement and Fair Value of Financial Instruments

9 Months Ended

Sep. 30, 2023

Fair Value Disclosures [Abstract]

Fair Value Measurement and Fair Value of Financial Instruments

Fair Value Measurement and Fair Value of Financial Instruments

Under applicable accounting standards, the Company measures a portion of its assets and liabilities at fair value. These assets and liabilities are predominantly recorded at fair value on a recurring basis. From time to time, certain assets and liabilities are measured at fair value on a nonrecurring basis; that is, they are subject to fair value adjustments only as required through the application of an accounting method such as lower of cost or fair value or write-down of individual assets. The Company categorizes its assets and liabilities into three levels based on the established fair value hierarchy and conducts a review of fair value hierarchy classifications on a quarterly basis. For more information regarding the fair value hierarchy and how the Company measures fair value, see Note 1 — Summary of Significant Accounting Policies — Significant Accounting Policies — Fair Value to the Consolidated Financial Statements in the Company’s 2022 Form 10-K.

Assets and Liabilities Measured at Fair Value on a Recurring Basis

The following section describes the valuation methodologies used by the Company to measure financial assets and liabilities on a recurring basis, as well as the general classification of these instruments within the fair value hierarchy.

Available-for-Sale Debt Securities — The fair value of AFS debt securities is generally determined by independent external pricing service providers who have experience in valuing these securities or by taking the average quoted market prices obtained from independent external brokers. The valuations provided by the third-party pricing service providers are based on observable market inputs, which include benchmark yields, reported trades, issuer spreads, benchmark securities, bids, offers, prepayment expectations and reference data obtained from market research publications. Inputs used by the third-party pricing service providers in valuing collateralized mortgage obligations and other securitization structures also include newly issued data, monthly payment information, whole loan collateral performance, tranche evaluation and “To Be Announced” prices. In valuing securities issued by state and political subdivisions, inputs used by third-party pricing service providers also include material event notices.

On a monthly basis, the Company validates the valuations provided by third-party pricing service providers to ensure that the fair value determination is consistent with the applicable accounting guidance and the financial instruments are properly classified in the fair value hierarchy. To perform this validation, the Company evaluates the fair values of securities by comparing the fair values provided by the third-party pricing service providers to prices from other available independent sources for the same securities. When significant variances in prices are identified, the Company further compares inputs used by different sources to ascertain the reliability of these sources. On a quarterly basis, the Company reviews the valuation inputs and methodology furnished by third-party pricing service providers for each security category.

When a quoted price in an active market exists for the identical security, this price is used to determine the fair value and the AFS debt security is classified as Level 1. Level 1 AFS debt securities consist of U.S. Treasury securities. When pricing is unavailable from third-party pricing service providers for certain securities, the Company requests market quotes from various independent external brokers and utilizes the average quoted market prices. In addition, the Company obtains market quotes from other official published sources. As these valuations are based on observable inputs in the current marketplace, they are classified as Level 2. The Company periodically communicates with the independent external brokers to validate their pricing methodology. Information such as pricing sources, pricing assumptions, data inputs and valuation techniques are reviewed periodically.

Equity Securities — Equity securities consisted of mutual funds as of both September 30, 2023 and December 31, 2022. The Company invested in these mutual funds for Community Reinvestment Act (“CRA”) purposes. The Company uses net asset value (“NAV”) information to determine the fair value of these equity securities. When NAV is available periodically and the equity securities can be put back to the transfer agents at the publicly available NAV, the fair value of the equity securities is classified as Level 1. When NAV is available periodically, but the equity securities may not be readily marketable at its periodic NAV in the secondary market, the fair value of these equity securities is classified as Level 2.

Interest Rate Contracts — Interest rate contracts consist of interest rate swaps and options. The fair value of the interest rate swaps is determined using the market standard methodology of netting the discounted future fixed cash payments (or receipts) and the discounted expected variable cash receipts (or payments). The fair value of the interest rate options, which consist of floors and caps, is determined using the market standard methodology of discounting the future expected cash receipts that would occur if variable interest rates fall below (rise above) the strike rate of the floors (caps). In addition, to comply with the provisions of ASC 820, Fair Value Measurement, the Company incorporates credit valuation adjustments to appropriately reflect both its own and the respective counterparty’s nonperformance risk in the fair value measurements of its derivatives. The credit valuation adjustments associated with the Company’s derivatives utilize model-derived credit spreads, which are Level 3 inputs. Considering the observable nature of all other significant inputs utilized, the Company classifies these derivative instruments as Level 2.

Foreign Exchange Contracts — The fair value of foreign exchange contracts is determined at each reporting period based on changes in the foreign exchange rates. These are over-the-counter contracts where quoted market prices are not readily available. Valuation is measured using conventional valuation methodologies with observable market data. Due to the short-term nature of the majority of these contracts, the counterparties’ credit risks are considered nominal and result in no adjustments to the valuation of the foreign exchange contracts. Due to the observable nature of the inputs used in deriving the fair value of these contracts, the valuation of foreign exchange contracts is classified as Level 2. As of both September 30, 2023 and December 31, 2022, the Bank held foreign currency non-deliverable forward contracts to hedge its net investment in its China subsidiary, East West Bank (China) Limited, a non-U.S. dollar (“USD”) functional currency subsidiary in China. These foreign currency non-deliverable forward contracts were designated as net investment hedges. The fair value of foreign currency non-deliverable forward contracts is determined by comparing the contracted foreign exchange rate to the current market foreign exchange rate. Key inputs of the current market exchange rate include the spot and forward rates of the contractual currencies. Foreign exchange forward curves are used to determine which forward rate pertains to a specific maturity. Due to the observable nature of the inputs used in deriving the estimated fair value, these instruments are classified as Level 2.

Credit Contracts — Credit contracts utilized by the Company are comprised of credit risk participation agreements (“RPAs”) entered into by the Company with institutional counterparties. The fair value of the RPAs is calculated by determining the total expected asset or liability exposure of the derivatives to the borrowers and applying the borrowers’ credit spread to that exposure. Total expected exposure incorporates both the current and potential future exposure of the derivatives, derived from using observable inputs, such as yield curves and volatilities. Due to the observable nature of all other significant inputs used in deriving the estimated fair value, credit contracts are classified as Level 2.

Equity Contracts — Equity contracts consist of warrants to purchase common or preferred stock of public and private companies, and any liability-classified contingent issuable shares of the Company. The fair value of the warrants is based on the Black-Scholes option pricing model. For warrants from public companies, the model uses the underlying stock price, stated strike price, warrant expiration date, risk-free interest rate based on a duration-matched U.S. Treasury rate, and market-observable company-specific equity volatility as inputs to value the warrants. Due to the observable nature of the inputs used in deriving the estimated fair value, warrants from public companies are classified as Level 2. For warrants from private companies, the model uses inputs such as the offering price observed in the most recent round of funding, stated strike price, warrant expiration date, risk-free interest rate based on duration-matched U.S. Treasury rate and option volatility. The Company applies proxy volatilities based on the industry sectors of the private companies. The model values are then adjusted for a general lack of liquidity due to the private nature of the underlying companies. Since both option volatility and liquidity discount assumptions are subject to management’s judgment, measurement uncertainty is inherent in the valuation of private company warrants. Due to the unobservable nature of the option volatility and liquidity discount assumptions used in deriving the estimated fair value, warrants from private companies are classified as Level 3. On a quarterly basis, the changes in the fair value of warrants from private companies are reviewed for reasonableness, and a measurement of uncertainty analysis on the option volatility and liquidity discount assumptions is performed.

In connection with the Company’s acquisition of a 49.99% equity interest in Rayliant Global Advisors Limited (“Rayliant”) during the third quarter of 2023, the Company granted performance restricted stock units (“PRSUs”) as part of its consideration. The vesting of these equity contracts is contingent on Rayliant meeting certain financial performance targets, and they are accounted for as a derivative liability. The fair value of these liability-classified equity contracts varies based on the operating revenue and operating EBITDA of Rayliant to be achieved during the future performance period. Due to the unobservable nature of the input assumptions, these equity contracts are classified as Level 3. For additional information on the equity contracts, refer to Note 6 — Derivatives and Note 8 — Investments in Qualified Affordable Housing Partnerships, Tax Credit and Other Investments, Net and Variable Interest Entities to the Consolidated Financial Statements in this Form 10-Q.

Commodity Contracts — Commodity contracts consist of swaps and options referencing commodity products. The fair value of the commodity option contracts is determined using the Black-Scholes model and assumptions that include expectations of future commodity price and volatility. The future commodity contract price is derived from observable inputs such as the market price of the commodity. Commodity swaps are structured as an exchange of fixed cash flows for floating cash flows. The fair value of the commodity swaps is determined using the market standard methodology of netting the discounted future fixed cash payments (or receipts) and the discounted expected variable cash receipts (or payments) based on the market prices of the commodity. The fixed cash flows are predetermined based on the known volumes and fixed price as specified in the swap agreement. The floating cash flows are correlated with the change of forward commodity prices, which is derived from market corroborated futures settlement prices. As a result, the Company classifies these derivative instruments as Level 2 due to the observable nature of the significant inputs utilized.

The following tables present financial assets and liabilities that are measured at fair value on a recurring basis as of September 30, 2023 and December 31, 2022:

	Assets and Liabilities Measured at Fair Value on a Recurring Basis as of September 30, 2023
($ in thousands)	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total Fair Value
AFS debt securities:
U.S. Treasury securities	$	904,101	$	—	$	—	$	904,101
U.S. government agency and U.S. government-sponsored enterprise debt securities	—		447,464		—		447,464
U.S. government agency and U.S. government-sponsored enterprise mortgage-backed securities:
Commercial mortgage-backed securities	—		462,332		—		462,332
Residential mortgage-backed securities	—		1,694,342		—		1,694,342
Municipal securities	—		243,556		—		243,556
Non-agency mortgage-backed securities:
Commercial mortgage-backed securities	—		365,320		—		365,320
Residential mortgage-backed securities	—		570,787		—		570,787
Corporate debt securities	—		475,434		—		475,434
Foreign government bonds	—		222,790		—		222,790
Asset-backed securities	—		43,757		—		43,757
Collateralized loan obligations (“CLOs”)	—		609,954		—		609,954
Total AFS debt securities	$	904,101	$	5,135,736	$	—	$	6,039,837
Investments in qualified affordable housing partnerships, tax credit and other investments, net:
Equity securities	$	19,447	$	4,154	$	—	$	23,601
Total investments in qualified affordable housing partnerships, tax credit and other investments, net	$	19,447	$	4,154	$	—	$	23,601
Derivative assets:
Interest rate contracts	$	—	$	624,087	$	—	$	624,087
Foreign exchange contracts	—		100,377		—		100,377
Equity contracts	—		—		352		352
Commodity contracts	—		137,500		—		137,500
Gross derivative assets	$	—	$	861,964	$	352	$	862,316
Netting adjustments (1)	$	—	$	(530,331)	$	—	$	(530,331)
Net derivative assets	$	—	$	331,633	$	352	$	331,985
Derivative liabilities:
Interest rate contracts	$	—	$	712,302	$	—	$	712,302
Foreign exchange contracts	—		77,099		—		77,099
Equity contracts (2)	—		—		15,119		15,119
Credit contracts	—		12		—		12
Commodity contracts	—		143,855		—		143,855
Gross derivative liabilities	$	—	$	933,268	$	15,119	$	948,387
Netting adjustments (1)	$	—	$	(262,873)	$	—	$	(262,873)
Net derivative liabilities	$	—	$	670,395	$	15,119	$	685,514

	Assets and Liabilities Measured at Fair Value on a Recurring Basis as of December 31, 2022
($ in thousands)	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total Fair Value
AFS debt securities:
U.S. Treasury securities	$	606,203	$	—	$	—	$	606,203
U.S. government agency and U.S. government-sponsored enterprise debt securities	—		461,607		—		461,607
U.S. government agency and U.S. government-sponsored enterprise mortgage-backed securities:
Commercial mortgage-backed securities	—		500,269		—		500,269
Residential mortgage-backed securities	—		1,762,195		—		1,762,195
Municipal securities	—		257,099		—		257,099
Non-agency mortgage-backed securities:
Commercial mortgage-backed securities	—		398,329		—		398,329
Residential mortgage-backed securities	—		649,224		—		649,224
Corporate debt securities	—		526,274		—		526,274
Foreign government bonds	—		227,053		—		227,053
Asset-backed securities	—		49,076		—		49,076
CLOs	—		597,664		—		597,664
Total AFS debt securities	$	606,203	$	5,428,790	$	—	$	6,034,993
Investments in qualified affordable housing partnerships, tax credit and other investments, net:
Equity securities	$	19,777	$	4,177	$	—	$	23,954
Total investments in qualified affordable housing partnerships, tax credit and other investments, net	$	19,777	$	4,177	$	—	$	23,954
Derivative assets:
Interest rate contracts	$	—	$	440,283	$	—	$	440,283
Foreign exchange contracts	—		53,109		—		53,109
Equity contracts	—		—		323		323
Commodity contracts	—		261,613		—		261,613
Gross derivative assets	$	—	$	755,005	$	323	$	755,328
Netting adjustments (1)	$	—	$	(614,783)	$	—	$	(614,783)
Net derivative assets	$	—	$	140,222	$	323	$	140,545
Derivative liabilities:
Interest rate contracts	$	—	$	584,516	$	—	$	584,516
Foreign exchange contracts	—		44,117		—		44,117
Credit contracts	—		23		—		23
Commodity contracts	—		258,608		—		258,608
Gross derivative liabilities	$	—	$	887,264	$	—	$	887,264
Netting adjustments (1)	$	—	$	(242,745)	$	—	$	(242,745)
Net derivative liabilities	$	—	$	644,519	$	—	$	644,519

(1)Represents balance sheet netting of derivative assets and liabilities and related cash collateral under master netting agreements or similar agreements. See Note 6 — Derivatives to the Consolidated Financial Statements in this Form 10-Q for additional information.

(2)Equity contracts classified as derivative liabilities consist of PRSUs granted as part of EWBC’s consideration in its investment in Rayliant.

For the three and nine months ended September 30, 2023 and 2022, Level 3 fair value measurements that were measured on a recurring basis consisted of warrant equity contracts issued by private companies and liability-classified contingent issuable shares of the Company. The following table provides a reconciliation of the beginning and ending balances of these equity contracts for the three and nine months ended September 30, 2023 and 2022:

	Three Months Ended September 30,				Nine Months Ended September 30,
($ in thousands)	2023		2022		2023		2022
Derivative assets:
Equity contracts
Beginning balance	$	263	$	357	$	323	$	215
Total (losses) gains included in earnings (1)	(3)		(12)		(63)		39
Issuances	92		—		92		91
Ending balance	$	352	$	345	$	352	$	345
Derivative liabilities:
Equity contracts (2)
Beginning balance	$	—	$	—	$	—	$	—
Issuances	15,119		—		15,119		—
Ending balance	$	15,119	$	—	$	15,119	$	—

(1)Includes unrealized (losses) gains recorded in Lending fees on the Consolidated Statement of Income.

(2)Equity contracts classified as derivative liabilities consist of PRSUs granted as part of EWBC’s consideration in its investment in Rayliant.

The following table presents quantitative information about the significant unobservable inputs used in the valuation of Level 3 fair value measurements as of September 30, 2023 and December 31, 2022. The significant unobservable inputs presented in the table below are those that the Company considers significant to the fair value of the Level 3 assets. The Company considers unobservable inputs to be significant if, by their exclusion, the fair value of the Level 3 assets would be impacted by a predetermined percentage change.

($ in thousands)	Fair Value Measurements (Level 3)		Valuation Technique	Unobservable Inputs	Range of Inputs	Weighted-Average of Inputs
September 30, 2023
Derivative assets:
Equity contracts	$	352	Black-Scholes option pricing model	Equity volatility	41% — 51%	46	%	(1)
				Liquidity discount	47%	47	%
Derivative liabilities:
Equity contracts (2)	$	15,119	Internal model	Payout % designated based on operating revenue and operating EBITDA of investee	84%	84	%
December 31, 2022
Derivative assets:
Equity contracts	$	323	Black-Scholes option pricing model	Equity volatility	42% — 60%	54	%	(1)
				Liquidity discount	47%	47	%

(1)The calculation for the weighted-average of inputs for the derivative asset equity contracts is based on the fair value of equity contracts as of both September 30, 2023 and December 31, 2022.

(2)Equity contracts classified as derivative liabilities consist of PRSUs granted as part of EWBC’s consideration in its investment in Rayliant.

Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis

Assets measured at fair value on a nonrecurring basis include certain individually evaluated loans held-for-investment, investments in qualified affordable housing partnerships, tax credit and other investments, other real estate owned (“OREO”), loans held-for-sale, and other nonperforming assets. Nonrecurring fair value adjustments result from the impairment on certain individually evaluated loans held-for-investment and investments in qualified affordable housing partnerships, tax credit and other investments, from write-downs of OREO and other nonperforming assets, or from the application of lower of cost or fair value on loans held-for-sale.

Individually Evaluated Loans Held-for-Investment — Individually evaluated loans held-for-investment are classified as Level 3 assets. The following two methods are used to derive the fair value of individually evaluated loans held-for-investment:

•Discounted cash flow valuation techniques that consist of developing an expected stream of cash flows over the life of the loans, and then calculating the present value of the loans by discounting the expected cash flows at a designated discount rate.

•When the repayment of an individually evaluated loan is dependent on the sale of the collateral, the fair value of the loan is determined based on the fair value of the underlying collateral, which may take the form of real estate, inventory, equipment, contracts or guarantees. The fair value of the underlying collateral is generally based on third-party appraisals, or an internal valuation if a third-party appraisal is not required by regulations, or is unavailable. An internal valuation utilizes one or more valuation techniques such as the income, market and/or cost approaches.

Investments in Qualified Affordable Housing Partnerships, Tax Credit and Other Investments, Net — The Company conducts due diligence on its investments in qualified affordable housing partnerships, tax credit and other investments prior to the initial investment date and through the placed-in-service date. After these investments are either acquired or placed into service, the Company continues its periodic monitoring process to ensure book values are realizable and that there is no significant tax credit recapture risk. This monitoring process includes reviewing the investment entity’s quarterly financial statements and annual tax returns, the annual financial statements of the guarantor (if any) and a comparison of the actual performance of the investment against the financial projections prepared at the time the investment was made. The Company assesses its tax credit and other investments for possible other-than-temporary impairment on an annual basis or when events or circumstances suggest that the carrying amount of the investments may not be realizable. These circumstances can include, but are not limited to the following factors:

•expected future cash flows that are less than the carrying amount of the investment;

•changes in the economic, market or technological environment that could adversely affect the investee’s operations;

•the potential for tax credit recapture; and

•other factors that raise doubt about the investee’s ability to continue as a going concern, such as negative cash flows from operations and the continuing prospects of the underlying operations of the investment.

All available information is considered in assessing whether a decline in value is other-than-temporary. Generally, none of the aforementioned factors are individually conclusive and the relative importance placed on individual facts may vary depending on the situation. In accordance with ASC 323-10-35-32, Investments — Equity Method and Joint Ventures, an impairment charge would only be recognized in earnings for a decline in value that is determined to be other-than-temporary.

Other Real Estate Owned — The Company’s OREO represents properties acquired through foreclosure, or through full or partial satisfaction of loans held-for-investment. These OREO properties are recorded at estimated fair value less the costs to sell at the time of foreclosure or at the lower of cost or estimated fair value less the costs to sell subsequent to acquisition. On a monthly basis, the current fair market value of each OREO property is reviewed to ensure that the current carrying value is appropriate. OREO properties are classified as Level 3.

Loans Held-for-Sale — Loans held-for-investment subsequently transferred to held-for-sale are recorded at the lower of cost or fair value upon transfer. Loans held-for-sale may be measured at fair value on a nonrecurring basis when fair value is less than cost. Fair value is generally determined based on available market data for similar loans and therefore, are classified as Level 2.

Other Nonperforming Assets — Other nonperforming assets are recorded at fair value upon transfer from loans to foreclosed assets. Subsequently, foreclosed assets are recorded at the lower of carrying value or fair value. Fair value is based on independent market prices, appraised values of the collateral or management’s estimated recovery of the foreclosed asset. The Company records an impairment when the foreclosed asset’s fair value declines below its carrying value. The fair value measurement of other nonperforming assets is classified within one of the three levels in a valuation hierarchy based upon the observability of inputs to the valuation as of the measurement date.

The following tables present the carrying amounts of assets that were still held and had fair value adjustments measured on a nonrecurring basis as of September 30, 2023 and December 31, 2022:

	Assets Measured at Fair Value on a Nonrecurring Basis as of September 30, 2023
($ in thousands)	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Fair Value Measurements
Loans held-for-investment:
Commercial:
Commercial and industrial (“C&I”)	$	—	$	—	$	22,788	$	22,788
Commercial real estate (“CRE”):
Construction and land	—		—		11,141		11,141
Total commercial	—		—		33,929		33,929
Consumer:
Residential mortgage:
Home equity lines of credit (“HELOCs”)	—		—		1,204		1,204
Total consumer	—		—		1,204		1,204
Total loans held-for-investment	$	—	$	—	$	35,133	$	35,133
Investments in qualified affordable housing partnerships, tax credit and other investments, net	$	—	$	—	$	1,038	$	1,038

	Assets Measured at Fair Value on a Nonrecurring Basis as of December 31, 2022
($ in thousands)	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Fair Value Measurements
Loans held-for-investment:
Commercial:
C&I	$	—	$	—	$	40,011	$	40,011
CRE:
CRE	—		—		31,380		31,380
Total commercial	—		—		71,391		71,391
Consumer:
Residential mortgage:
HELOCs	—		—		1,223		1,223
Total consumer	—		—		1,223		1,223
Total loans held-for-investment	$	—	$	—	$	72,614	$	72,614

The following table presents the increase (decrease) in the fair value of certain assets held at the end of the respective reporting periods, for which a nonrecurring fair value adjustment was recognized for the three and nine months ended September 30, 2023 and 2022:

	Three Months Ended September 30,				Nine Months Ended September 30,
($ in thousands)	2023		2022		2023		2022
Loans held-for-investment:
Commercial:
C&I	$	366	$	(15,265)	$	(4,437)	$	(30,011)
CRE:
CRE	—		(118)		—		2,212
Multifamily residential	—		(5,931)		—		(5,939)
Construction and land	(10,413)		—		(10,413)		—
Total commercial	(10,047)		(21,314)		(14,850)		(33,738)
Consumer:
Residential mortgage:
HELOCs	(41)		81		(41)		166
Total consumer	(41)		81		(41)		166
Total loans held-for-investment	$	(10,088)	$	(21,233)	$	(14,891)	$	(33,572)
Investments in qualified affordable housing partnerships, tax credit and other investments, net	$	(790)	$	—	$	(1,577)	$	—
Other nonperforming assets	$	—	$	—	$	—	$	(6,861)

The following table presents the quantitative information about the significant unobservable inputs used in the valuation of Level 3 fair value measurements that are measured on a nonrecurring basis as of September 30, 2023 and December 31, 2022:

($ in thousands)	Fair Value Measurements (Level 3)		Valuation Techniques	Unobservable Inputs	Range of Inputs	Weighted-Average of Inputs (1)
September 30, 2023
Loans held-for-investment	$	13,955	Fair value of collateral	Discount	15% — 75%	48	%	(1)
	$	6,134	Fair value of collateral	Contract value	NM	NM
	$	15,044	Fair value of property	Selling cost	8%	8	%
Investments in qualified affordable housing partnerships, tax credit and other investments, net	$	1,038	Individual analysis of each investment	Expected future tax benefits and distributions	NM	NM
December 31, 2022
Loans held-for-investment	$	23,322	Discounted cash flows	Discount	4% — 6%	4	%	(1)
	$	17,912	Fair value of collateral	Discount	15% — 75%	37	%	(1)
	$	31,380	Fair value of property	Selling cost	8%	8	%

NM — Not meaningful.

(1)The calculation for the weighted-average of inputs is based on the relative fair value of the respective assets as of September 30, 2023 and December 31, 2022.

Disclosures about the Fair Value of Financial Instruments

The following tables present the fair value estimates for financial instruments as of September 30, 2023 and December 31, 2022, excluding financial instruments recorded at fair value on a recurring basis as they are included in the tables presented elsewhere in this Note. The carrying amounts in the following tables are recorded on the Consolidated Balance Sheet under the indicated captions, except for accrued interest receivable, restricted equity securities, at cost, and mortgage servicing rights that are included in Other assets, and accrued interest payable which is included in Accrued expenses and other liabilities. These financial instruments are measured on an amortized cost basis on the Company’s Consolidated Balance Sheet.

	September 30, 2023
($ in thousands)	Carrying Amount		Level 1		Level 2		Level 3		Estimated Fair Value
Financial assets:
Cash and cash equivalents	$	4,561,178	$	4,561,178	$	—	$	—	$	4,561,178
Interest-bearing deposits with banks	$	17,213	$	—	$	17,213	$	—	$	17,213
Resale agreements	$	785,000	$	—	$	672,250	$	—	$	672,250
HTM debt securities	$	2,964,235	$	470,618	$	1,837,430	$	—	$	2,308,048
Restricted equity securities, at cost	$	79,522	$	—	$	79,522	$	—	$	79,522
Loans held-for-sale	$	4,762	$	—	$	4,762	$	—	$	4,762
Loans held-for-investment, net	$	50,251,661	$	—	$	—	$	48,992,846	$	48,992,846
Mortgage servicing rights	$	5,208	$	—	$	—	$	9,821	$	9,821
Accrued interest receivable	$	317,881	$	—	$	317,881	$	—	$	317,881
Financial liabilities:
Demand, checking, savings and money market deposits	$	38,435,954	$	—	$	38,435,954	$	—	$	38,435,954
Time deposits	$	16,651,077	$	—	$	16,547,883	$	—	$	16,547,883
Short-term borrowings	$	4,500,000	$	—	$	4,500,000	$	—	$	4,500,000
Long-term debt	$	148,173	$	—	$	144,214	$	—	$	144,214
Accrued interest payable	$	150,890	$	—	$	150,890	$	—	$	150,890

	December 31, 2022
($ in thousands)	Carrying Amount		Level 1		Level 2		Level 3		Estimated Fair Value
Financial assets:
Cash and cash equivalents	$	3,481,784	$	3,481,784	$	—	$	—	$	3,481,784
Interest-bearing deposits with banks	$	139,021	$	—	$	139,021	$	—	$	139,021
Resale agreements	$	792,192	$	—	$	693,656	$	—	$	693,656
HTM debt securities	$	3,001,868	$	471,469	$	1,983,702	$	—	$	2,455,171
Restricted equity securities, at cost	$	78,624	$	—	$	78,624	$	—	$	78,624
Loans held-for-sale	$	25,644	$	—	$	25,644	$	—	$	25,644
Loans held-for-investment, net	$	47,606,785	$	—	$	—	$	46,670,690	$	46,670,690
Mortgage servicing rights	$	6,235	$	—	$	—	$	10,917	$	10,917
Accrued interest receivable	$	263,430	$	—	$	263,430	$	—	$	263,430
Financial liabilities:
Demand, checking, savings and money market deposits	$	42,637,316	$	—	$	42,637,316	$	—	$	42,637,316
Time deposits	$	13,330,533	$	—	$	13,228,777	$	—	$	13,228,777
Repurchase agreements	$	300,000	$	—	$	304,097	$	—	$	304,097
Long-term debt	$	147,950	$	—	$	143,483	$	—	$	143,483
Accrued interest payable	$	37,198	$	—	$	37,198	$	—	$	37,198

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Assets Purchased under Resale Agreements and Sold under Repurchase Agreements

9 Months Ended

Sep. 30, 2023

RESALE AND REPURCHASE AGREEMENTS [Abstract]

Assets Purchased under Resale Agreements and Sold under Repurchase Agreements

Assets Purchased under Resale Agreements and Sold under Repurchase Agreements

Assets Purchased under Resale Agreements

The Company’s resale agreements exposes it to credit risk for both the counterparties and the underlying collateral. The Company manages credit exposure from certain transactions by entering into master netting agreements and collateral arrangements with the counterparties. The relevant agreements allow for an efficient closeout of the transaction, liquidation and set-off of collateral against the net amount owed by the counterparty following a default. It is also the Company’s policy to take possession, where possible, of the assets underlying resale agreements. As a result of the Company’s credit risk mitigation practices with respect to resale agreements as described above, the Company did not hold any reserves for credit impairment with respect to these agreements as of both September 30, 2023 and December 31, 2022.

Securities Purchased under Resale Agreements — Total securities purchased under resale agreements were $785.0 million as of September 30, 2023, and $760.0 million as of December 31, 2022. The weighted-average yields were 2.73% and 2.41% for the three months ended September 30, 2023 and 2022, respectively; and 2.55% and 1.96% for the nine months ended September 30, 2023 and 2022, respectively.

Loans Purchased under Resale Agreements — Loans purchased under resale agreements were $32.2 million as of December 31, 2022. During the first half of 2023, all of the loans purchased under resale agreements matured and the Company had no loans purchased under resale agreements as of September 30, 2023. The weighted-average yield was 7.27% for the nine months ended September 30, 2023. In comparison, the weighted-average yields for the three and nine months ended September 30, 2022 were 3.87% and 2.10%, respectively.

Assets Sold under Repurchase Agreements — Gross repurchase agreements were $300.0 million as of December 31, 2022. The Company extinguished $300.0 million of repurchase agreements during the first quarter of 2023. The Company recorded $3.9 million of extinguishment charges during the nine months ended September 30, 2023. In comparison, no extinguishment charges were recorded for the three and nine months ended September 30, 2022. The weighted-average interest rates were 5.51% and 2.81% for the three months ended September 30, 2023 and 2022, respectively; and 4.32% and 2.73% for the nine months ended September 30, 2023 and 2022, respectively. These weighted-average interest rates also reflect the impact of short-term repurchase agreements entered and repaid during the periods presented.

Balance Sheet Offsetting

The Company’s resale and repurchase agreements are transacted under legally enforceable master repurchase agreements that, in the event of default by the counterparty, provide the Company the right to liquidate securities held and to offset receivables and payables with the same counterparty. The Company nets resale and repurchase transactions with the same counterparty on the Consolidated Balance Sheet when it has a legally enforceable master netting agreement and the transactions are eligible for netting under ASC 210-20-45-11, Balance Sheet Offsetting Repurchase and Reverse Repurchase Agreements. Collateral received includes securities and loans that are not recognized on the Consolidated Balance Sheet. Collateral pledged consists of securities that are not netted on the Consolidated Balance Sheet against the related collateralized liability. Securities received or pledged as collateral in resale and repurchase agreements with other financial institutions may also be sold or re-pledged by the secured party, and are usually delivered to and held by the third-party trustees.

The following tables present the resale and repurchase agreements included on the Consolidated Balance Sheet as of September 30, 2023 and December 31, 2022:

($ in thousands)	September 30, 2023
	Gross Amounts of Recognized Assets		Gross Amounts Offset on the Consolidated Balance Sheet		Net Amounts of Assets Presented on the Consolidated Balance Sheet		Gross Amounts  Not Offset on the Consolidated  Balance Sheet			Net Amount
Assets							Collateral Received
Resale agreements	$	785,000	$	—	$	785,000	$	(687,327)	(1)	$	97,673
	Gross Amounts of Recognized Liabilities		Gross Amounts Offset on the Consolidated Balance Sheet		Net Amounts of Liabilities Presented on the Consolidated Balance Sheet		Gross Amounts Not Offset on the Consolidated Balance Sheet			Net Amount
Liabilities							Collateral Pledged
Repurchase agreements	$	—	$	—	$	—	$	—		$	—

($ in thousands)	December 31, 2022
	Gross Amounts of Recognized Assets		Gross Amounts Offset on the Consolidated Balance Sheet		Net Amounts of Assets Presented on the Consolidated Balance Sheet		Gross Amounts  Not Offset on the Consolidated  Balance Sheet
Assets										Net Amount
							Collateral Received
Resale agreements	$	792,192	$	—	$	792,192	$	(701,790)	(1)	$	90,402
Liabilities	Gross Amounts of Recognized Liabilities		Gross Amounts Offset on the Consolidated Balance Sheet		Net Amounts of Liabilities Presented on the Consolidated Balance Sheet		Gross Amounts Not Offset on the Consolidated Balance Sheet
										Net Amount
							Collateral Pledged
Repurchase agreements	$	300,000	$	—	$	300,000	$	(300,000)	(2)	$	—

(1)Represents the fair value of assets the Company has received under resale agreements, limited for table presentation purposes to the amount of the recognized asset due from each counterparty. The application of collateral cannot reduce the net position below zero. Therefore, excess collateral, if any, is not reflected above.

(2)Represents the fair value of assets the Company has pledged under repurchase agreements, limited for table presentation purposes to the amount of the recognized liability due to each counterparty. The application of collateral cannot reduce the net position below zero. Therefore, excess collateral, if any, is not reflected above.

In addition to the amounts included in the tables above, the Company also has balance sheet netting related to derivatives. Refer to Note 6 — Derivatives to the Consolidated Financial Statements in this Form 10-Q for additional information.

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Securities

9 Months Ended

Sep. 30, 2023

Investments, Debt and Equity Securities [Abstract]

Securities

Securities

The following tables present the amortized cost, gross unrealized gains and losses and fair value by major categories of AFS and HTM debt securities as of September 30, 2023 and December 31, 2022:

	September 30, 2023
($ in thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
AFS debt securities:
U.S. Treasury securities	$	974,615	$	48	$	(70,562)	$	904,101
U.S. government agency and U.S. government-sponsored enterprise debt securities	512,712		—		(65,248)		447,464
U.S. government agency and U.S. government-sponsored enterprise mortgage-backed securities:
Commercial mortgage-backed securities	545,086		—		(82,754)		462,332
Residential mortgage-backed securities	1,983,284		15		(288,957)		1,694,342
Municipal securities	301,408		—		(57,852)		243,556
Non-agency mortgage-backed securities:
Commercial mortgage-backed securities	418,451		—		(53,131)		365,320
Residential mortgage-backed securities	687,674		—		(116,887)		570,787
Corporate debt securities	653,501		—		(178,067)		475,434
Foreign government bonds	237,531		75		(14,816)		222,790
Asset-backed securities	44,819		—		(1,062)		43,757
CLOs	617,250		—		(7,296)		609,954
Total AFS debt securities	6,976,331		138		(936,632)		6,039,837
HTM debt securities:
U.S. Treasury securities	528,169		—		(57,551)		470,618
U.S. government agency and U.S. government-sponsored enterprise debt securities	1,001,298		—		(249,007)		752,291
U.S. government agency and U.S. government-sponsored enterprise mortgage-backed securities:
Commercial mortgage-backed securities	494,787		—		(112,623)		382,164
Residential mortgage-backed securities	750,888		—		(183,488)		567,400
Municipal securities	189,093		—		(53,518)		135,575
Total HTM debt securities	2,964,235		—		(656,187)		2,308,048
Total debt securities	$	9,940,566	$	138	$	(1,592,819)	$	8,347,885

	December 31, 2022
($ in thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
AFS debt securities:
U.S. Treasury securities	$	676,306	$	—	$	(70,103)	$	606,203
U.S. government agency and U.S. government-sponsored enterprise debt securities	517,806		67		(56,266)		461,607
U.S. government agency and U.S. government-sponsored enterprise mortgage-backed securities:
Commercial mortgage-backed securities	577,392		—		(77,123)		500,269
Residential mortgage-backed securities	2,011,054		41		(248,900)		1,762,195
Municipal securities	303,884		3		(46,788)		257,099
Non-agency mortgage-backed securities:
Commercial mortgage-backed securities	447,512		213		(49,396)		398,329
Residential mortgage-backed securities	762,202		—		(112,978)		649,224
Corporate debt securities	673,502		—		(147,228)		526,274
Foreign government bonds	241,165		174		(14,286)		227,053
Asset-backed securities	51,152		—		(2,076)		49,076
CLOs	617,250		—		(19,586)		597,664
Total AFS debt securities	6,879,225		498		(844,730)		6,034,993
HTM debt securities:
U.S. Treasury securities	524,081		—		(52,612)		471,469
U.S. government agency and U.S. government-sponsored enterprise debt securities	998,972		—		(209,560)		789,412
U.S. government agency and U.S. government-sponsored enterprise mortgage-backed securities:
Commercial mortgage-backed securities	506,965		—		(98,566)		408,399
Residential mortgage-backed securities	782,141		—		(148,230)		633,911
Municipal securities	189,709		—		(37,729)		151,980
Total HTM debt securities	3,001,868		—		(546,697)		2,455,171
Total debt securities	$	9,881,093	$	498	$	(1,391,427)	$	8,490,164

As of September 30, 2023 and December 31, 2022, the amortized cost of debt securities excluded accrued interest receivables of $42.6 million and $41.8 million, respectively, which are included in Other assets on the Consolidated Balance Sheet. For the Company’s accounting policy related to debt securities’ accrued interest receivable, see Note 1 — Summary of Significant Accounting Policies — Significant Accounting Policies — Allowance for Credit Losses on Available-for-Sale Debt Securities and Allowance for Credit Losses on Held-to-Maturity Debt Securities to the Consolidated Financial Statements in the Company’s 2022 Form 10-K.

Unrealized Losses of Available-for-Sale Debt Securities

The following tables present the fair value and the associated gross unrealized losses of the Company’s AFS debt securities, aggregated by investment category and the length of time that the securities have been in a continuous unrealized loss position as of September 30, 2023 and December 31, 2022.

	September 30, 2023
	Less Than 12 Months				12 Months or More				Total
($ in thousands)	Fair Value		Gross Unrealized Losses		Fair Value		Gross Unrealized Losses		Fair Value		Gross Unrealized Losses
AFS debt securities:
U.S. Treasury securities	$	—	$	—	$	605,730	$	(70,562)	$	605,730	$	(70,562)
U.S. government agency and U.S. government sponsored enterprise debt securities	199,139		(861)		248,325		(64,387)		447,464		(65,248)
U.S. government agency and U.S. government-sponsored enterprise mortgage-backed securities:
Commercial mortgage-backed securities	4,434		(96)		457,898		(82,658)		462,332		(82,754)
Residential mortgage-backed securities	63,660		(517)		1,627,451		(288,440)		1,691,111		(288,957)
Municipal securities	5,891		(288)		237,665		(57,564)		243,556		(57,852)
Non-agency mortgage-backed securities:
Commercial mortgage-backed securities	—		—		365,320		(53,131)		365,320		(53,131)
Residential mortgage-backed securities	—		—		570,787		(116,887)		570,787		(116,887)
Corporate debt securities	—		—		475,434		(178,067)		475,434		(178,067)
Foreign government bonds	109,413		(249)		85,433		(14,567)		194,846		(14,816)
Asset-backed securities	—		—		43,757		(1,062)		43,757		(1,062)
CLOs	—		—		609,954		(7,296)		609,954		(7,296)
Total AFS debt securities	$	382,537	$	(2,011)	$	5,327,754	$	(934,621)	$	5,710,291	$	(936,632)

	December 31, 2022
	Less Than 12 Months				12 Months or More				Total
($ in thousands)	Fair Value		Gross Unrealized Losses		Fair Value		Gross Unrealized Losses		Fair Value		Gross Unrealized Losses
AFS debt securities:
U.S. Treasury securities	$	131,843	$	(8,761)	$	474,360	$	(61,342)	$	606,203	$	(70,103)
U.S. government agency and U.S. government-sponsored enterprise debt securities	97,403		(6,902)		214,136		(49,364)		311,539		(56,266)
U.S. government agency and U.S. government-sponsored enterprise mortgage-backed securities:
Commercial mortgage-backed securities	252,144		(30,029)		248,125		(47,094)		500,269		(77,123)
Residential mortgage-backed securities	307,536		(20,346)		1,448,658		(228,554)		1,756,194		(248,900)
Municipal securities	95,655		(10,194)		159,439		(36,594)		255,094		(46,788)
Non-agency mortgage-backed securities:
Commercial mortgage-backed securities	106,184		(3,309)		282,301		(46,087)		388,485		(49,396)
Residential mortgage-backed securities	22,715		(1,546)		626,509		(111,432)		649,224		(112,978)
Corporate debt securities	173,595		(17,907)		352,679		(129,321)		526,274		(147,228)
Foreign government bonds	107,576		(429)		36,143		(13,857)		143,719		(14,286)
Asset-backed securities	12,450		(524)		36,626		(1,552)		49,076		(2,076)
CLOs	144,365		(4,735)		453,299		(14,851)		597,664		(19,586)
Total AFS debt securities	$	1,451,466	$	(104,682)	$	4,332,275	$	(740,048)	$	5,783,741	$	(844,730)

As of September 30, 2023, the Company had 567 AFS debt securities in a gross unrealized loss position with no credit impairment, primarily consisting of 269 U.S. government agency and U.S. government-sponsored enterprise mortgage-backed securities, 66 corporate debt securities, and 99 non-agency mortgage-backed securities. In comparison, as of December 31, 2022, the Company had 559 AFS debt securities in a gross unrealized loss position with no credit impairment, primarily consisting of 263 U.S. government agency and U.S. government-sponsored enterprise mortgage-backed securities, 100 non-agency mortgage-backed securities, and 68 corporate debt securities.

Allowance for Credit Losses on Available-for-Sale Debt Securities

The Company evaluates each AFS debt security where the fair value declines below amortized cost. For a discussion of the factors and criteria the Company uses in analyzing securities for impairment related to credit losses, see Note 1 — Summary of Significant Accounting Policies — Significant Accounting Policies — Allowance for Credit Losses on Available-for-Sale Debt Securities to the Consolidated Financial Statements in the Company’s 2022 Form 10-K.

The gross unrealized losses presented in the preceding tables were primarily attributable to interest rate movement and the widening of liquidity and/or credit spreads. U.S. Treasury, U.S. government agency, U.S. government-sponsored agency, and U.S. government-sponsored enterprise debt and mortgage-backed securities are issued, guaranteed, or otherwise supported by the U.S. government and have a zero credit loss assumption. The remaining securities that were in an unrealized loss position as of September 30, 2023 were mainly comprised of the following:

•Non-agency mortgage-backed securities — The market value decline as of September 30, 2023, was primarily due to interest rate movement and spread widening. Since these securities are rated investment grade by nationally recognized statistical rating organizations (“NRSROs”), or have high priority in the cash flow waterfall within the securitization structure, and the contractual payments have historically been on time, the Company believes the risk of credit losses on these securities is low.

•Corporate debt securities — The market value decline as of September 30, 2023 was primarily due to interest rate movement and spread widening. A portion of the corporate debt securities is comprised of subordinated debt securities issued by U.S. banks. Despite the reduction of the market value of these securities after the banking sector disruption in the first nine months of 2023, these securities are nearly all rated investment grade by NRSROs or issued by well-capitalized financial institutions with strong profitability. The contractual payments from these corporate debt securities have been and are expected to be received on time. The Company will continue to monitor the market developments in the banking sector and the credit performance of these securities.

As of both September 30, 2023 and December 31, 2022, the Company intended to hold the AFS debt securities with unrealized losses through the anticipated recovery period and it was more-likely-than-not that the Company would not have to sell these securities before the recovery of their amortized cost. The issuers of these securities have not, to the Company’s knowledge, established any cause for default on these securities. As a result, the Company expects to recover the entire amortized cost basis of these securities. Accordingly, there was no allowance for credit losses provided against these securities as of both September 30, 2023 and December 31, 2022. In addition, there was no provision for credit losses recognized for the three and nine months ended September 30, 2023 and 2022.

Allowance for Credit Losses on Held-to-Maturity Debt Securities

The Company separately evaluates its HTM debt securities for any credit losses using an expected loss model, similar to the methodology used for loans. For additional information on the Company’s credit loss methodology, refer to Note 1 — Summary of Significant Accounting Policies — Significant Accounting Policies — Allowance for Credit Losses on Held-to-Maturity Debt Securities to the Consolidated Financial Statements in the Company’s 2022 Form 10-K.

The Company monitors the credit quality of the HTM debt securities using external credit ratings. As of September 30, 2023, all HTM securities were rated investment grade by NRSROs and issued, guaranteed, or supported by U.S. government entities and agencies. Accordingly, the Company applied a zero credit loss assumption and no allowance for credit losses was recorded as of both September 30, 2023 and December 31, 2022. Overall, the Company believes that the credit support levels of the debt securities are strong, and based on current assessments and macroeconomic forecasts, expects that full contractual cash flows will be received.

Realized Gains and Losses

The following table presents the gross realized gains from the sales and impairment write-off of AFS debt securities and the related tax expense (benefit) included in earnings for the three and nine months ended September 30, 2023 and 2022:

	Three Months Ended September 30,				Nine Months Ended September 30,
($ in thousands)	2023		2022		2023		2022
Gross realized gains from sales	$	—	$	—	$	—	$	1,306
Impairment write-off (1)	$	—	$	—	$	10,000	$	—
Related tax expense (benefit)	$	—	$	—	$	(2,956)	$	386

(1)During the first quarter of 2023, the Company fully wrote down a subordinated debt security and recorded the impairment loss as a component of noninterest income in the Company’s Consolidated Statement of Income.

Interest Income

The following table presents the composition of interest income on debt securities for the three and nine months ended September 30, 2023 and 2022:

	Three Months Ended September 30,				Nine Months Ended September 30,
($ in thousands)	2023		2022		2023		2022
Taxable interest	$	63,877	$	46,172	$	189,065	$	125,626
Nontaxable interest	5,901		4,920		15,614		14,309
Total interest income on debt securities	$	69,778	$	51,092	$	204,679	$	139,935

Contractual Maturities of Available-for-Sale and Held-to-Maturity Debt Securities

The following tables present the contractual maturities, amortized cost, fair value and weighted-average yields of AFS and HTM debt securities as of September 30, 2023. Expected maturities will differ from contractual maturities on certain securities as the issuers and borrowers of the underlying collateral may have the right to call or prepay obligations with or without prepayment penalties.

($ in thousands)	Within One Year			After One Year through Five Years			After Five Years through Ten Years			After Ten Years			Total
AFS debt securities:
U.S. Treasury securities
Amortized cost	$	298,323		$	676,292		$	—		$	—		$	974,615
Fair value	298,371			605,730			—			—			904,101
Weighted-average yield (1)	5.44		%	1.20		%	—		%	—		%	2.50		%
U.S. government agency and U.S. government-sponsored enterprise debt securities
Amortized cost	150,000			96,472			103,171			163,069			512,712
Fair value	149,616			91,343			82,252			124,253			447,464
Weighted-average yield (1)	4.98		%	3.08		%	1.39		%	2.18		%	3.01		%
U.S. government agency and U.S. government-sponsored enterprise mortgage-backed securities
Amortized cost	—			42,260			144,846			2,341,264			2,528,370
Fair value	—			39,718			128,933			1,988,023			2,156,674
Weighted-average yield (1) (2)	—		%	3.16		%	2.73		%	3.68		%	3.62		%
Municipal securities
Amortized cost	2,400			36,850			9,007			253,151			301,408
Fair value	2,383			33,794			7,596			199,783			243,556
Weighted-average yield (1) (2)	3.13		%	2.34		%	2.87		%	2.24		%	2.28		%
Non-agency mortgage-backed securities
Amortized cost	99,830			92,328			11,056			902,911			1,106,125
Fair value	98,420			89,370			10,793			737,524			936,107
Weighted-average yield (1)	6.27		%	4.16		%	0.80		%	2.58		%	3.02		%
Corporate debt securities
Amortized cost	—			—			349,501			304,000			653,501
Fair value	—			—			280,812			194,622			475,434
Weighted-average yield (1)	—		%	—		%	3.48		%	1.97		%	2.78		%
Foreign government bonds
Amortized cost	32,875			104,656			50,000			50,000			237,531
Fair value	32,810			104,546			49,609			35,825			222,790
Weighted-average yield (1)	3.02		%	2.28		%	5.71		%	1.50		%	2.94		%
Asset-backed securities
Amortized cost	—			—			—			44,819			44,819
Fair value	—			—			—			43,757			43,757
Weighted-average yield (1)	—		%	—		%	—		%	6.01		%	6.01		%
CLOs
Amortized cost	—			—			319,000			298,250			617,250
Fair value	—			—			314,219			295,735			609,954
Weighted-average yield (1)	—		%	—		%	6.71		%	6.76		%	6.73		%
Total AFS debt securities
Amortized cost	$	583,428		$	1,048,858		$	986,581		$	4,357,464		$	6,976,331
Fair value	$	581,600		$	964,501		$	874,214		$	3,619,522		$	6,039,837
Weighted-average yield (1)	5.32		%	1.86		%	4.27		%	3.40		%	3.45		%

($ in thousands)	Within One Year			After One Year through Five Years			After Five Years through Ten Years			After Ten Years			Total
HTM debt securities:
U.S. Treasury securities
Amortized cost	$	—		$	528,169		$	—		$	—		$	528,169
Fair value	—			470,618			—			—			470,618
Weighted-average yield (1)	—		%	1.05		%	—		%	—		%	1.05		%
U.S. government agency and U.S. government-sponsored enterprise debt securities
Amortized cost	—			—			328,870			672,428			1,001,298
Fair value	—			—			265,107			487,184			752,291
Weighted-average yield (1)	—		%	—		%	1.92		%	1.89		%	1.90		%
U.S. government agency and U.S. government-sponsored enterprise mortgage-backed securities
Amortized cost	—			—			94,992			1,150,683			1,245,675
Fair value	—			—			76,426			873,138			949,564
Weighted-average yield (1) (2)	—		%	—		%	1.56		%	1.68		%	1.67		%
Municipal securities
Amortized cost	—			—			—			189,093			189,093
Fair value	—			—			—			135,575			135,575
Weighted-average yield (1) (2)	—		%	—		%	—		%	1.99		%	1.99		%
Total HTM debt securities
Amortized cost	$	—		$	528,169		$	423,862		$	2,012,204		$	2,964,235
Fair value	$	—		$	470,618		$	341,533		$	1,495,897		$	2,308,048
Weighted-average yield (1)	—		%	1.05		%	1.84		%	1.78		%	1.66		%

(1)Weighted-average yields are computed based on amortized cost balances.

(2)Yields on tax-exempt securities are not presented on a tax-equivalent basis.

As of September 30, 2023 and December 31, 2022, AFS and HTM debt securities with carrying values of $7.04 billion and $794.2 million, respectively, were pledged to secure borrowings, public deposits, repurchase agreements and for other purposes required or permitted by law.

Restricted Equity Securities

The following table presents the restricted equity securities included in Other assets on the Consolidated Balance Sheet as of September 30, 2023 and December 31, 2022:

($ in thousands)	September 30, 2023		December 31, 2022
Federal Reserve Bank of San Francisco (“FRBSF”) stock	$	62,272	$	61,374
FHLB stock	17,250		17,250
Total restricted equity securities	$	79,522	$	78,624

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Derivatives

9 Months Ended

Sep. 30, 2023

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Derivatives

DerivativesThe Company uses derivative instruments to manage exposure to market risk, primarily interest rate and foreign currency risks, as well as to assist customers with their risk management objectives. The Company’s goal is to manage interest rate sensitivity and volatility to mitigate the effect of interest rate changes on earnings or capital. The Company also uses foreign exchange contracts to manage the foreign exchange rate risk associated with certain foreign currency-denominated assets and liabilities, as well as the Bank’s investment in East West Bank (China) Limited. The Company recognizes all derivatives on the Consolidated Balance Sheet at fair value. While the Company designates certain derivatives as hedging instruments in a qualifying hedge accounting relationship, other derivatives serve as economic hedges. For additional information on the Company’s derivatives and hedging activities, see Note 1 — Summary of Significant Accounting Policies — Significant Accounting Policies — Derivatives to the Consolidated Financial Statements of the Company’s 2022 Form 10-K.

The following table presents the notional amounts and fair values of the Company’s derivatives as of September 30, 2023 and December 31, 2022. Certain derivative contracts are cleared though central clearing organizations where variation margin is applied daily as settlement to the fair values of the contracts. The fair values are presented on a gross basis prior to the application of bilateral collateral and master netting agreements, but after the application of variation margin payments as settlement to fair values of contracts cleared through central clearing organizations. Applying variation margin payments as settlement to the fair values of derivative contracts cleared through the London Clearing House (“LCH”) and the Chicago Mercantile Exchange (“CME”) resulted in reductions in the derivative asset and liability fair values by $16.0 million and $65.7 million, respectively, as of September 30, 2023. In comparison, applying variation margin payments as settlement to LCH- and CME-cleared derivative transactions resulted in reductions in the derivative asset and liability fair values by $167.2 million and $81.3 million, respectively, as of December 31, 2022. Total derivative asset and liability fair values are adjusted to reflect the effects of legally enforceable master netting agreements and cash collateral received or paid. The resulting net derivative asset and liability fair values are included in Other assets and Accrued expenses and other liabilities, respectively, on the Consolidated Balance Sheet.

	September 30, 2023								December 31, 2022
			Fair Value								Fair Value
($ in thousands)	Notional Amount		Derivative Assets			Derivative Liabilities			Notional Amount		Derivative Assets			Derivative Liabilities
Derivatives designated as hedging instruments:
Cash flow hedges:
Interest rate contracts	$	5,000,000	$	1,288		$	96,382		$	3,450,000	$	13,455		$	19,687
Net investment hedges:
Foreign exchange contracts	81,480		3,709			—			84,832		5,590			—
Total derivatives designated as hedging instruments	$	5,081,480	$	4,997		$	96,382		$	3,534,832	$	19,045		$	19,687
Derivatives not designated as hedging instruments:
Interest rate contracts	$	17,456,102	$	622,799		$	615,920		$	16,932,414	$	426,828		$	564,829
Commodity contracts (1)	—		137,500			143,855			—		261,613			258,608
Foreign exchange contracts	5,205,007		96,668			77,099			2,982,891		47,519			44,117
Credit contracts (2)	143,703		—			12			140,950		—			23
Equity contracts	—		352		(3)	15,119		(4)	—		323		(3)	—
Total derivatives not designated as hedging instruments	$	22,804,812	$	857,319		$	852,005		$	20,056,255	$	736,283		$	867,577
Gross derivative assets/liabilities			$	862,316		$	948,387				$	755,328		$	887,264
Less: Master netting agreements			(260,648)			(260,648)					(242,745)			(242,745)
Less: Cash collateral received			(269,683)			(2,225)					(372,038)			—
Net derivative assets/liabilities			$	331,985		$	685,514				$	140,545		$	644,519

(1)The notional amount of the Company’s commodity contracts totaled 20,672 thousand barrels of crude oil and 363,020 thousand units of natural gas, measured in million British thermal units (“MMBTUs”) as of September 30, 2023. In comparison, the notional amount of the Company’s commodity contracts totaled 12,005 thousand barrels of crude oil and 247,704 thousand MMBTUs of natural gas as of December 31, 2022.

(2)The notional amount of the credit contracts reflects the Company’s pro-rata share of the derivative instruments in RPAs.

(3)The Company held warrant equity contracts in one public company and 13 private companies as of both September 30, 2023 and December 31, 2022.

(4)Equity contracts classified as derivative liabilities consist of 349,138 PRSUs granted as part of EWBC’s consideration in its investment in Rayliant.

Derivatives Designated as Hedging Instruments

Cash Flow Hedges — The Company uses interest rate swaps to hedge the variability in interest received on certain floating-rate commercial loans, or paid on certain floating-rate borrowings due to changes in contractually specified interest rates. As of September 30, 2023, interest rate contracts in notional amounts of $5.00 billion were designated as cash flow hedges to convert certain variable-rate loans from floating-rate payments to fixed-rate payments. Gains and losses on the hedging derivative instruments are recognized in AOCI and reclassified to earnings in the same period the hedged cash flows impact earnings and within the same income statement line item as the hedged cash flows. Considering the interest rates, yield curve and notional amount as of September 30, 2023, the Company expects to reclassify an estimated $66.2 million of after-tax net losses on derivative instruments designated as cash flow hedges from AOCI into earnings during the next 12 months.

The following table presents the pre-tax changes in AOCI from cash flow hedges for the three and nine months ended September 30, 2023 and 2022. The after-tax impact of cash flow hedges on AOCI is shown in Note 14 — Accumulated Other Comprehensive Income (Loss) to the Consolidated Financial Statements in this Form-10-Q.

	Three Months Ended September 30,				Nine Months Ended September 30,
($ in thousands)	2023		2022		2023			2022
Losses recognized in AOCI:
Interest rate contracts	$	(62,715)	$	(48,325)	$	(129,329)		$	(88,771)
Gains (losses) reclassified from AOCI into earnings:
Interest expense (for cash flow hedges on borrowings)	$	—	$	1,251	$	696		$	1,385
Interest and dividend income (for cash flow hedges on loans)	(24,059)		(2,870)		(57,265)			216
Noninterest income	—		—		1,614		(1)	—
Total	$	(24,059)	$	(1,619)	$	(54,955)		$	1,601

(1)Represents the amounts in AOCI reclassified into earnings as a result that the forecasted cash flows were no longer probable to occur.

Net Investment Hedges — The Company enters into foreign currency forward contracts to hedge a portion of the Bank’s investment in East West Bank (China) Limited, a non-USD functional currency subsidiary in China. The hedging instruments designated as net investment hedges were used to hedge against the risk of adverse changes in the foreign currency exchange rate of the Chinese Renminbi (“RMB”). The following table presents the pre-tax gains recognized in AOCI on net investment hedges for the three and nine months ended September 30, 2023 and 2022:

	Three Months Ended September 30,				Nine Months Ended September 30,
($ in thousands)	2023		2022		2023		2022
Gains recognized in AOCI	$	63	$	4,343	$	2,886	$	6,027

Derivatives Not Designated as Hedging Instruments

Customer-Related Positions and Economic Hedge Derivatives — The Company enters into interest rate, commodity, and foreign exchange derivatives at the request of its customers and generally enters into offsetting derivative contracts with third-party financial institutions to mitigate the inherent market risk. The Company also utilizes foreign exchange contracts to mitigate the effect of currency fluctuations on certain foreign currency-denominated on-balance sheet assets and liabilities, primarily foreign currency denominated deposits that it offers to its customers. A majority of the foreign exchange contracts had original maturities of one year or less as of both September 30, 2023 and December 31, 2022.

The following table presents the notional amounts and the gross fair values of the interest rate and foreign exchange derivatives entered into with customers and with third-party financial institutions as economic hedges to customers’ positions as of September 30, 2023 and December 31, 2022:

	September 30, 2023						December 31, 2022
			Fair Value						Fair Value
($ in thousands)	Notional Amount		Assets		Liabilities		Notional Amount		Assets		Liabilities
Customer-related positions:
Interest rate contracts:
Swaps	$	6,890,450	$	691	$	584,962	$	6,656,491	$	1,438	$	521,719
Written options	1,486,958		—		21,864		1,548,158		—		30,904
Collars and corridors	306,996		—		7,619		215,773		—		8,924
Subtotal	8,684,404		691		614,445		8,420,422		1,438		561,547
Foreign exchange contracts:
Forwards and spot	62,237		11,376		24,484		993,588		17,009		18,090
Swaps	2,494,517		16,282		23,687		623,143		6,629		12,178
Other	142,000		5,630		—		121,631		2,070		245
Subtotal	2,698,754		33,288		48,171		1,738,362		25,708		30,513
Total	$	11,383,158	$	33,979	$	662,616	$	10,158,784	$	27,146	$	592,060
Economic hedges:
Interest rate contracts:
Swaps	$	6,916,364	$	592,177	$	1,119	$	6,683,828	$	384,201	$	2,047
Purchased options	1,517,648		22,285		—		1,580,275		32,233		—
Written options	30,690		—		356		32,117		—		1,235
Collars and corridors	306,996		7,646		—		215,772		8,956		—
Subtotal	8,771,698		622,108		1,475		8,511,992		425,390		3,282
Foreign exchange contracts:
Forwards and spot	1,060,498		452		313		77,998		3,050		87
Swaps	1,303,755		62,928		22,985		1,044,900		18,516		11,447
Other	142,000		—		5,630		121,631		245		2,070
Subtotal	2,506,253		63,380		28,928		1,244,529		21,811		13,604
Total	$	11,277,951	$	685,488	$	30,403	$	9,756,521	$	447,201	$	16,886

The Company enters into energy commodity contracts with its customers in the oil and gas sector, which allow them to hedge against the risk of fluctuation in energy commodity prices. Offsetting contracts entered with third-party financial institutions are used as economic hedges to manage the Company’s exposure on its customer-related positions. The following table presents the notional amounts in units and the gross fair values of the commodity derivatives issued for customer-related positions and economic hedges as of September 30, 2023 and December 31, 2022:

	September 30, 2023						December 31, 2022
			Fair Value						Fair Value
($ and unit in thousands)	Notional Units		Assets		Liabilities		Notional Units		Assets		Liabilities
Customer-related positions:
Commodity contracts:
Crude oil:
Swaps	3,958	Barrels	$	27,543	$	1,717	2,465	Barrels	$	39,955	$	6,178
Collars	6,362	Barrels	24,552		119		3,011	Barrels	16,038		2,630
Written options	—	Barrels	—		—		—	Barrels	558		—
Subtotal	10,320	Barrels	52,095		1,836		5,476	Barrels	56,551		8,808
Natural gas:
Swaps	129,940	MMBTUs	32,428		55,387		92,590	MMBTUs	112,314		73,208
Collars	50,763	MMBTUs	865		11,535		32,072	MMBTUs	2,217		18,317
Written options	1,955	MMBTUs	—		206		—	MMBTUs	—		—
Subtotal	182,658	MMBTUs	33,293		67,128		124,662	MMBTUs	114,531		91,525
Total			$	85,388	$	68,964			$	171,082	$	100,333
Economic hedges:
Commodity contracts:
Crude oil:
Swaps	3,990	Barrels	$	2,165	$	24,403	2,587	Barrels	$	6,935	$	36,060
Collars	6,362	Barrels	—		18,781		3,942	Barrels	1,378		12,856
Purchased options	—	Barrels	—		—		—	Barrels	—		516
Subtotal	10,352	Barrels	2,165		43,184		6,529	Barrels	8,313		49,432
Natural gas:
Swaps	129,405	MMBTUs	42,804		31,289		91,900	MMBTUs	69,767		106,883
Collars	49,003	MMBTUs	6,937		418		31,142	MMBTUs	12,451		1,960
Purchased options	1,955	MMBTUs	206		—		—	MMBTUs	—		—
Subtotal	180,363	MMBTUs	49,947		31,707		123,042	MMBTUs	82,218		108,843
Total			$	52,112	$	74,891			$	90,531	$	158,275

Credit Contracts — The Company periodically enters into credit RPAs with institutional counterparties to manage the credit exposure of the interest rate contracts associated with syndication loans. Under the RPAs, a portion of the credit exposure is transferred from one party (the purchaser of credit protection) to another party (the seller of credit protection). The seller of credit protection is required to make payments to the purchaser of credit protection if the underlying borrower defaults on the related interest rate contract. The Company may enter into protection sold or protection purchased RPAs. Credit risk on RPAs is managed by monitoring the credit worthiness of the borrowers and the institutional counterparties, which is a part of the Company’s normal credit review and monitoring process. All referenced entities of the protection sold RPAs were investment grade and the weighted-average remaining maturity was 2.5 years and 2.4 years as of September 30, 2023 and December 31, 2022, respectively. Assuming that the underlying borrowers referenced in the interest rate contracts defaulted, the Company would not have any current exposure in the protection sold RPAs as of both September 30, 2023 and December 31, 2022.

As of September 30, 2023, the Company had outstanding protection purchased RPAs with notional amount of $25.0 million and minimal fair value. In comparison, the Company did not have any outstanding protection purchased RPAs as of December 31, 2022.

Equity Contracts — As part of the loan origination process, the Company may obtain warrants to purchase the preferred and/or common stock of the borrowers’ companies, which are mainly in the technology and life sciences sectors. Warrants grant the Company the right to buy a certain class of the underlying company’s equity at a certain price before expiration. In connection with the Company’s investment in Rayliant during the third quarter of 2023, the Company granted PRSUs as part of its consideration. The vesting of these equity contracts is contingent on Rayliant meeting certain financial performance targets during the future performance period. For additional information on these equity contracts, refer to Note 3 — Fair Value Measurement and Fair Value of Financial Instruments and Note 8 — Investments in Qualified Affordable Housing Partnerships, Tax Credit and Other Investments, Net and Variable Interest Entities to the Consolidated Financial Statements in this Form 10-Q.

The following table presents the net gains (losses) recognized on the Company’s Consolidated Statement of Income related to derivatives not designated as hedging instruments for the three and nine months ended September 30, 2023 and 2022:

	Classification on Consolidated Statement of Income	Three Months Ended September 30,				Nine Months Ended September 30,
($ in thousands)		2023		2022		2023		2022
Derivatives not designated as hedging instruments:
Interest rate contracts	Interest rate contracts and other derivative income	$	5,283	$	4,870	$	4,022	$	18,439
Foreign exchange contracts	Foreign exchange income	7,267		3,831		37,607		6,596
Credit contracts	Interest rate contracts and other derivative income	4		50		11		114
Equity contracts - warrants	Lending fees	89		(13)		29		175
Commodity contracts	Interest rate contracts and other derivative income	27		(156)		193		139
Net gains		$	12,670	$	8,582	$	41,862	$	25,463

Credit-Risk-Related Contingent Features — Certain of the Company’s over-the-counter derivative contracts contain early termination provisions that require the Company to settle any outstanding balances upon the occurrence of a specified credit-risk-related event. Such an event primarily relates to a downgrade of the credit rating of East West Bank to below investment grade. As of September 30, 2023, the aggregate fair value amounts of all derivative instruments with credit-risk-related contingent features that were in a net liability position totaled $2.2 million, and $2.2 million collateral was posted to cover these positions. In comparison, as of December 31, 2022, the aggregate fair value amounts of all derivative instruments with credit-risk-related contingent features that were in a net liability position totaled $2.6 million, of which $1.1 million of collateral was posted to cover these positions. If the credit rating of East West Bank had been downgraded to below investment grade, the Company would have been required to post minimal additional collateral as of both September 30, 2023 and December 31, 2022.

Offsetting of Derivatives

The following tables present the gross derivative fair values, the balance sheet netting adjustments, and the resulting net fair values recorded on the Consolidated Balance Sheet, as well as the cash and noncash collateral associated with master netting arrangements. The gross amounts of derivative assets and liabilities are presented after the application of variation margin payments as settlements to the fair values of contracts cleared through central clearing organizations, where applicable. The collateral amounts in the following tables are limited to the outstanding balances of the related asset or liability. Therefore, instances of over-collateralization are not shown:

($ in thousands)	As of September 30, 2023
	Gross Amounts Recognized (1)		Gross Amounts Offset on the Consolidated Balance Sheet				Net Amounts Presented on the Consolidated Balance Sheet		Gross Amounts Not Offset on the Consolidated Balance Sheet		Net Amount
			Master Netting Arrangements		Cash Collateral Received (3)				Security Collateral Received (5)
Derivative assets	$	862,316	$	(260,648)	$	(269,683)	$	331,985	$	(280,043)	$	51,942
	Gross Amounts Recognized (2)		Gross Amounts Offset on the Consolidated Balance Sheet				Net Amounts Presented on the Consolidated Balance Sheet		Gross Amounts Not Offset on the Consolidated Balance Sheet		Net Amount
			Master Netting Arrangements		Cash Collateral Pledged (4)				Security Collateral Pledged (5)
Derivative liabilities	$	948,387	$	(260,648)	$	(2,225)	$	685,514	$	—	$	685,514

($ in thousands)	As of December 31, 2022
	Gross Amounts Recognized (1)		Gross Amounts Offset on the Consolidated Balance Sheet				Net Amounts Presented on the Consolidated Balance Sheet		Gross Amounts Not Offset on the Consolidated Balance Sheet		Net Amount
			Master Netting Arrangements		Cash Collateral Received (3)				Security Collateral Received (5)
Derivative assets	$	755,328	$	(242,745)	$	(372,038)	$	140,545	$	(60,567)	$	79,978
	Gross Amounts Recognized (2)		Gross Amounts Offset on the Consolidated Balance Sheet				Net Amounts Presented on the Consolidated Balance Sheet		Gross Amounts Not Offset on the Consolidated Balance Sheet		Net Amount
			Master Netting Arrangements		Cash Collateral Pledged (4)				Security Collateral Pledged (5)
Derivative liabilities	$	887,264	$	(242,745)	$	—	$	644,519	$	(38,438)	$	606,081

(1)Includes $1.8 million and $2.1 million of gross fair value assets with counterparties that were not subject to enforceable master netting arrangements or similar agreements as of September 30, 2023 and December 31, 2022, respectively.

(2)Includes $16.2 million and $566 thousand of gross fair value liabilities with counterparties that were not subject to enforceable master netting arrangements or similar agreements as of September 30, 2023 and December 31, 2022, respectively.

(3)Gross cash collateral received under master netting arrangements or similar agreements was $275.7 million and $384.9 million as of September 30, 2023 and December 31, 2022, respectively. Of the gross cash collateral received, $269.7 million and $372.0 million were used to offset against derivative assets as of September 30, 2023 and December 31, 2022, respectively.

(4)Gross cash collateral pledged under master netting arrangements or similar agreements was $3.1 million and $490 thousand as of September 30, 2023 and December 31, 2022, respectively. Of the gross cash collateral pledged, $2.2 million was used to offset against derivative liabilities as of September 30, 2023. In comparison, no cash collateral was used to offset against derivative liabilities as of December 31, 2022.

(5)Represents the fair value of security collateral received or pledged limited to derivative assets or liabilities that are subject to enforceable master netting arrangements or similar agreements. U.S. GAAP does not permit the netting of noncash collateral on the Consolidated Balance Sheet but requires the disclosure of such amounts.

In addition to the amounts included in the tables above, the Company has balance sheet netting related to resale and repurchase agreements. Refer to Note 4 — Assets Purchased under Resale Agreements and Sold under Repurchase Agreements to the Consolidated Financial Statements in this Form 10-Q for additional information. Refer to Note 3 — Fair Value Measurement and Fair Value of Financial Instruments to the Consolidated Financial Statements in this Form 10-Q for fair value measurement disclosures on derivatives.

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Loans Receivable and Allowance for Credit Losses

9 Months Ended

Sep. 30, 2023

Loans and Leases Receivable Disclosure [Abstract]

Loans Receivable and Allowance for Credit Losses

The following table presents the composition of the Company’s loans held-for-investment outstanding as of September 30, 2023 and December 31, 2022:

($ in thousands)	September 30, 2023		December 31, 2022
Commercial:
C&I	$	15,864,042	$	15,711,095
CRE:
CRE	14,667,378		13,857,870
Multifamily residential	4,900,097		4,573,068
Construction and land	798,190		638,420
Total CRE	20,365,665		19,069,358
Total commercial	36,229,707		34,780,453
Consumer:
Residential mortgage:
Single-family residential	12,836,558		11,223,027
HELOCs	1,776,665		2,122,655
Total residential mortgage	14,613,223		13,345,682
Other consumer	64,254		76,295
Total consumer	14,677,477		13,421,977
Total loans held-for-investment (1)	$	50,907,184	$	48,202,430
Allowance for loan losses	(655,523)		(595,645)
Loans held-for-investment, net (1)	$	50,251,661	$	47,606,785

(1)Includes $72.0 million and $70.4 million comprising unamortized deferred and unearned fees, net of premiums as of September 30, 2023 and December 31, 2022, respectively.

Accrued interest receivable on loans held-for-investment was $249.3 million and $208.4 million as of September 30, 2023 and December 31, 2022, respectively, and was included in Other assets on the Consolidated Balance Sheet. The interest income reversed was insignificant for both the three and nine months ended September 30, 2023 and 2022. For the Company’s accounting policy on accrued interest receivable related to loans held-for-investment, see Note 1 — Summary of Significant Accounting Policies — Significant Accounting Policies — Loans Held-for-Investment to the Consolidated Financial Statements of the Company’s 2022 Form 10-K. The Company also has loans held-for-sale. For the Company’s accounting policy on loans held-for-sale, refer to Note 1 — Summary of Significant Accounting Policies — Significant Accounting Policies — Loans Held-for-Sale to the Consolidated Financial Statements in the Company’s 2022 Form 10-K.

The Company’s FRBSF and FHLB borrowings are primarily secured by loans held-for-investment. Loans held-for-investment totaling $35.18 billion and $28.30 billion, respectively, were pledged to secure borrowings and provide additional borrowing capacity as of September 30, 2023 and December 31, 2022.

Credit Quality Indicators

All loans are subject to the Company’s credit review and monitoring process. For the commercial loan portfolio, loans are risk rated based on an analysis of the borrower’s current payment performance or delinquency, repayment sources, financial and liquidity factors, including industry and geographic considerations. For the consumer loan portfolio, payment performance or delinquency is typically the driving indicator for risk ratings.

The Company utilizes internal credit risk ratings to assign each individual loan a risk rating of 1 through 10:

•Pass — loans risk rated 1 through 5 are assigned an internal risk rating category of “Pass.” Loans risk rated 1 are typically loans fully secured by cash. Pass loans have sufficient sources of repayment to repay the loan in full, in accordance with all terms and conditions.

•Special mention — loans assigned a risk rating of 6 have potential weaknesses that warrant closer attention by management; these are assigned an internal risk rating category of “Special Mention.”

•Substandard — loans assigned a risk rating of 7 or 8 have well-defined weaknesses that may jeopardize the full and timely repayment of the loan; these are assigned an internal risk rating category of “Substandard.”

•Doubtful — loans assigned a risk rating of 9 have insufficient sources of repayment and a high probability of loss; these are assigned an internal risk rating category of “Doubtful.”

•Loss — loans assigned a risk rating of 10 are uncollectible and of such little value that they are no longer considered bankable assets; these are assigned an internal risk rating category of “Loss.”

Loan exposures categorized as criticized consist of special mention, substandard, doubtful and loss categories. The Company reviews the internal risk ratings of its loan portfolio on a regular basis, and adjusts the ratings based on changes in the borrowers’ financial status and the collectability of the loans.

The following tables summarize the Company’s loans held-for-investment and current year-to-date gross write-offs by loan portfolio segments, internal risk ratings and vintage year as of the periods presented. The vintage year is the year of loan origination, renewal or major modification. Revolving loans that are converted to term loans presented in the tables below are excluded from term loans by vintage year columns.

	September 30, 2023
	Term Loans by Origination Year
($ in thousands)	2023		2022		2021		2020		2019		Prior		Revolving Loans		Revolving Loans Converted to Term Loans (1)		Total
Commercial:
C&I:
Pass	$	1,858,749	$	1,942,241	$	1,470,818	$	354,650	$	259,342	$	164,149	$	9,254,852	$	20,248	$	15,325,049
Criticized (accrual)	88,542		110,918		91,272		45,069		25,603		23,640		104,802		—		489,846
Criticized (nonaccrual)	2,084		10,480		13		8,694		6,134		21,709		33		—		49,147
Total C&I	1,949,375		2,063,639		1,562,103		408,413		291,079		209,498		9,359,687		20,248		15,864,042
YTD gross write-offs (2)	350		28		161		15		6,606		1,684		—		—		8,844
CRE:
Pass	2,066,361		4,080,810		2,259,761		1,396,114		1,649,168		2,722,697		101,811		63,050		14,339,772
Criticized (accrual)	36,899		14,717		20,307		100,871		24,544		129,658		—		—		326,996
Criticized (nonaccrual)	—		—		—		—		451		159		—		—		610
Subtotal CRE	2,103,260		4,095,527		2,280,068		1,496,985		1,674,163		2,852,514		101,811		63,050		14,667,378
YTD gross write-offs (2)	—		—		—		—		—		119		—		—		119
Multifamily residential:
Pass	478,895		1,495,620		814,391		620,117		503,791		893,282		7,658		1,288		4,815,042
Criticized (accrual)	—		—		53,555		—		696		26,124		—		—		80,375
Criticized (nonaccrual)	—		—		—		—		—		4,680		—		—		4,680
Subtotal multifamily residential	478,895		1,495,620		867,946		620,117		504,487		924,086		7,658		1,288		4,900,097
Construction and land:
Pass	151,175		354,415		222,474		37,732		812		5,475		14,966		—		787,049
Criticized (nonaccrual)	—		—		—		—		—		11,141		—		—		11,141
Subtotal construction and land	151,175		354,415		222,474		37,732		812		16,616		14,966		—		798,190
YTD gross write-offs	—		—		—		—		—		10,413		—		—		10,413
Total CRE	2,733,330		5,945,562		3,370,488		2,154,834		2,179,462		3,793,216		124,435		64,338		20,365,665
YTD gross write-offs (2)	—		—		—		—		—		10,532		—		—		10,532
Total commercial	$	4,682,705	$	8,009,201	$	4,932,591	$	2,563,247	$	2,470,541	$	4,002,714	$	9,484,122	$	84,586	$	36,229,707
YTD total commercial gross write-offs (2)	$	350	$	28	$	161	$	15	$	6,606	$	12,216	$	—	$	—	$	19,376

	September 30, 2023
	Term Loans by Origination Year
($ in thousands)	2023		2022		2021		2020		2019		Prior		Revolving Loans		Revolving Loans Converted to Term Loans (1)		Total
Consumer:
Residential mortgage:
Single-family residential:
Pass (3)	$	2,400,448	$	3,390,708	$	2,321,209	$	1,633,316	$	1,010,859	$	2,040,678	$	—	$	—	$	12,797,218
Criticized (accrual)	844		1,983		844		1,499		964		9,060		—		—		15,194
Criticized (nonaccrual) (3)	1,916		2,866		4,702		2,696		2,868		9,098		—		—		24,146
Subtotal single-family residential mortgage	2,403,208		3,395,557		2,326,755		1,637,511		1,014,691		2,058,836		—		—		12,836,558
HELOCs:
Pass	182		1,828		5,736		4,318		1,963		13,821		1,611,319		118,088		1,757,255
Criticized (accrual)	741		401		62		—		353		1,649		2,039		963		6,208
Criticized (nonaccrual)	—		517		—		1,359		68		5,396		1,751		4,111		13,202
Subtotal HELOCs	923		2,746		5,798		5,677		2,384		20,866		1,615,109		123,162		1,776,665
YTD gross write-offs (2)	—		—		—		—		—		41		—		6		47
Total residential mortgage	2,404,131		3,398,303		2,332,553		1,643,188		1,017,075		2,079,702		1,615,109		123,162		14,613,223
YTD gross write-offs (2)	—		—		—		—		—		41		—		6		47
Other consumer:
Pass	3,555		18,138		135		—		—		12,315		29,971		—		64,114
Criticized (accrual)	4		—		—		—		—		—		—		—		4
Criticized (nonaccrual)	—		—		—		—		—		—		136		—		136
Total other consumer	3,559		18,138		135		—		—		12,315		30,107		—		64,254
Total consumer	$	2,407,690	$	3,416,441	$	2,332,688	$	1,643,188	$	1,017,075	$	2,092,017	$	1,645,216	$	123,162	$	14,677,477
YTD total consumer gross write-offs (2)	$	—	$	—	$	—	$	—	$	—	$	41	$	—	$	6	$	47
Total loans held-for-investment:
Pass	$	6,959,365	$	11,283,760	$	7,094,524	$	4,046,247	$	3,425,935	$	5,852,417	$	11,020,577	$	202,674	$	49,885,499
Criticized (accrual)	127,030		128,019		166,040		147,439		52,160		190,131		106,841		963		918,623
Criticized (nonaccrual)	4,000		13,863		4,715		12,749		9,521		52,183		1,920		4,111		103,062
Total	$	7,090,395	$	11,425,642	$	7,265,279	$	4,206,435	$	3,487,616	$	6,094,731	$	11,129,338	$	207,748	$	50,907,184
YTD total loans held-for-investment gross write-offs (2)	$	350	$	28	$	161	$	15	$	6,606	$	12,257	$	—	$	6	$	19,423

	December 31, 2022
	Term Loans by Origination Year
($ in thousands)	2022		2021		2020		2019		2018		Prior		Revolving Loans		Revolving Loans Converted to Term Loans (1)		Total
Commercial:
C&I:
Pass	$	2,831,834	$	2,053,215	$	623,026	$	392,013	$	143,970	$	97,605	$	9,177,401	$	20,548	$	15,339,612
Criticized (accrual)	72,210		34,296		48,761		34,221		20,646		12,933		97,988		—		321,055
Criticized (nonaccrual)	18,722		4,797		10,733		243		5,618		10,315		—		—		50,428
Total C&I	2,922,766		2,092,308		682,520		426,477		170,234		120,853		9,275,389		20,548		15,711,095
CRE:
Pass	4,178,780		2,404,634		1,505,150		1,771,679		1,471,710		1,909,925		165,653		22,009		13,429,540
Criticized (accrual)	3,518		60,573		159,424		40,095		91,132		32,173		1,455		16,716		405,086
Criticized (nonaccrual)	—		19,044		—		—		—		4,200		—		—		23,244
Subtotal CRE	4,182,298		2,484,251		1,664,574		1,811,774		1,562,842		1,946,298		167,108		38,725		13,857,870
Multifamily residential:
Pass	1,500,289		892,598		641,677		519,614		350,044		625,293		11,325		—		4,540,840
Criticized (accrual)	—		—		—		707		4,276		27,076		—		—		32,059
Criticized (nonaccrual)	—		—		—		—		—		169		—		—		169
Subtotal multifamily residential	1,500,289		892,598		641,677		520,321		354,320		652,538		11,325		—		4,573,068
Construction and land:
Pass	288,394		276,839		31,804		3,104		2,805		231		9,073		—		612,250
Criticized (accrual)	4,504		—		—		—		21,666		—		—		—		26,170
Subtotal construction and land	292,898		276,839		31,804		3,104		24,471		231		9,073		—		638,420
Total CRE	5,975,485		3,653,688		2,338,055		2,335,199		1,941,633		2,599,067		187,506		38,725		19,069,358
Total commercial	$	8,898,251	$	5,745,996	$	3,020,575	$	2,761,676	$	2,111,867	$	2,719,920	$	9,462,895	$	59,273	$	34,780,453
Consumer:
Residential mortgage:
Single-family residential:
Pass (3)	$	3,548,894	$	2,453,717	$	1,775,696	$	1,101,965	$	817,164	$	1,500,359	$	—	$	—	$	11,197,795
Criticized (accrual)	—		1,275		785		1,463		4,352		3,935		—		—		11,810
Criticized (nonaccrual) (3)	141		—		204		3,202		1,721		8,154		—		—		13,422
Subtotal single-family residential mortgage	3,549,035		2,454,992		1,776,685		1,106,630		823,237		1,512,448		—		—		11,223,027
HELOCs:
Pass	520		3,583		7,336		3,203		525		8,960		1,958,692		127,401		2,110,220
Criticized (accrual)	—		6		—		—		—		—		4		1,079		1,089
Criticized (nonaccrual)	—		—		483		231		1,017		4,844		1,001		3,770		11,346
Subtotal HELOCs	520		3,589		7,819		3,434		1,542		13,804		1,959,697		132,250		2,122,655
Total residential mortgage	3,549,555		2,458,581		1,784,504		1,110,064		824,779		1,526,252		1,959,697		132,250		13,345,682
Other consumer:
Pass	17,088		137		5,356		—		—		15,808		37,804		—		76,193
Criticized (accrual)	3		—		—		—		—		—		—		—		3
Criticized (nonaccrual)	—		—		—		—		—		—		99		—		99
Total other consumer	17,091		137		5,356		—		—		15,808		37,903		—		76,295
Total consumer	$	3,566,646	$	2,458,718	$	1,789,860	$	1,110,064	$	824,779	$	1,542,060	$	1,997,600	$	132,250	$	13,421,977
Total by Risk Rating:
Pass	$	12,365,799	$	8,084,723	$	4,590,045	$	3,791,578	$	2,786,218	$	4,158,181	$	11,359,948	$	169,958	$	47,306,450
Criticized (accrual)	80,235		96,150		208,970		76,486		142,072		76,117		99,447		17,795		797,272
Criticized (nonaccrual)	18,863		23,841		11,420		3,676		8,356		27,682		1,100		3,770		98,708
Total	$	12,464,897	$	8,204,714	$	4,810,435	$	3,871,740	$	2,936,646	$	4,261,980	$	11,460,495	$	191,523	$	48,202,430

(1)$11.2 million and $24.6 million of total commercial loans, primarily comprised of CRE revolving loans, converted to term loans during the three and nine months ended September 30, 2023, respectively. In comparison, $0 and $26.4 million of total commercial loans, primarily comprised of CRE revolving loans, converted to term loans during the three and nine months ended September 30, 2022. $20.6 million and $27.7 million of total consumer loans, comprised of HELOCs, were converted to term loans during three and nine months ended September 30, 2023, respectively. In comparison, $375 thousand of total consumer loans, comprised of HELOCs, converted to term loans during both the three and nine months ended September 30, 2022.

(2)Excludes gross write-offs associated with loans the Company sold or settled.

(3)As of September 30, 2023 and December 31, 2022, $638 thousand and $818 thousand, respectively, of nonaccrual loans whose payments were guaranteed by the Federal Housing Administration were classified with a “Pass” rating.

Nonaccrual and Past Due Loans

Loans that are 90 or more days past due are generally placed on nonaccrual status unless the loan is well-collateralized and in the process of collection. Loans that are less than 90 days past due but have identified deficiencies, such as when the full collection of principal or interest becomes uncertain, are also placed on nonaccrual status. The following tables present the aging analysis of loans held-for-investment as of September 30, 2023 and December 31, 2022:

	September 30, 2023
($ in thousands)	Current Accruing Loans		Accruing Loans 30-59 Days Past Due		Accruing Loans 60-89 Days Past Due		Total Accruing Past Due Loans		Total Nonaccrual Loans		Total Loans
Commercial:
C&I	$	15,781,468	$	33,195	$	232	$	33,427	$	49,147	$	15,864,042
CRE:
CRE	14,664,230		2,015		523		2,538		610		14,667,378
Multifamily residential	4,894,334		1,083		—		1,083		4,680		4,900,097
Construction and land	787,049		—		—		—		11,141		798,190
Total CRE	20,345,613		3,098		523		3,621		16,431		20,365,665
Total commercial	36,127,081		36,293		755		37,048		65,578		36,229,707
Consumer:
Residential mortgage:
Single-family residential	12,771,661		24,141		15,972		40,113		24,784		12,836,558
HELOCs	1,746,841		10,416		6,206		16,622		13,202		1,776,665
Total residential mortgage	14,518,502		34,557		22,178		56,735		37,986		14,613,223
Other consumer	63,992		109		17		126		136		64,254
Total consumer	14,582,494		34,666		22,195		56,861		38,122		14,677,477
Total	$	50,709,575	$	70,959	$	22,950	$	93,909	$	103,700	$	50,907,184

	December 31, 2022
($ in thousands)	Current Accruing Loans		Accruing Loans 30-59 Days Past Due		Accruing Loans 60-89 Days Past Due		Total Accruing Past Due Loans		Total Nonaccrual Loans		Total Loans
Commercial:
C&I	$	15,651,312	$	6,482	$	2,873	$	9,355	$	50,428	$	15,711,095
CRE:
CRE	13,820,441		14,185		—		14,185		23,244		13,857,870
Multifamily residential	4,571,899		678		322		1,000		169		4,573,068
Construction and land	638,420		—		—		—		—		638,420
Total CRE	19,030,760		14,863		322		15,185		23,413		19,069,358
Total commercial	34,682,072		21,345		3,195		24,540		73,841		34,780,453
Consumer:
Residential mortgage:
Single-family residential	11,183,134		13,523		12,130		25,653		14,240		11,223,027
HELOCs	2,102,523		7,700		1,086		8,786		11,346		2,122,655
Total residential mortgage	13,285,657		21,223		13,216		34,439		25,586		13,345,682
Other consumer	73,004		109		3,083		3,192		99		76,295
Total consumer	13,358,661		21,332		16,299		37,631		25,685		13,421,977
Total	$	48,040,733	$	42,677	$	19,494	$	62,171	$	99,526	$	48,202,430

The following table presents the amortized cost of loans on nonaccrual status for which there was no related allowance for loan losses as of both September 30, 2023 and December 31, 2022. Nonaccrual loans may not have an allowance for credit losses if the loan balances are well-secured by the collateral value and there is no loss expectation.

($ in thousands)	September 30, 2023		December 31, 2022
Commercial:
C&I	$	29,336	$	11,398
CRE	—		22,944
Multifamily residential	4,235		—
Construction and land	11,141		—
Total commercial	44,712		34,342
Consumer:
Single-family residential	6,681		2,998
HELOCs	8,483		7,245
Total consumer	15,164		10,243
Total nonaccrual loans with no related allowance for loan losses	$	59,876	$	44,585

Foreclosed Assets

The Company acquires assets from borrowers through loan restructurings, workouts, or foreclosures. Assets acquired may include real properties (e.g., residential real estate, land, and buildings) and commercial and personal properties. The Company recognizes foreclosed assets upon receiving assets in satisfaction of a loan (e.g., taking legal title or physical possession).

Foreclosed assets, consisting of OREO and other nonperforming assets, are included in Other assets on the Consolidated Balance Sheet. The Company had no foreclosed assets as of September 30, 2023, compared with $270 thousand as of December 31, 2022. The Company commences the foreclosure process on consumer mortgage loans after a borrower becomes more than 120 days delinquent in accordance with the CFPB guidelines. The carrying value of the consumer real estate loans that were in an active or suspended foreclosure process was $9.9 million and $7.5 million as of September 30, 2023 and December 31, 2022, respectively.

Loan Modifications to Borrowers Experiencing Financial Difficulty

Effective January 1, 2023, the Company adopted ASU 2022-02, which in part eliminated the accounting for TDR and enhanced disclosures requirements for loan modifications to borrowers experiencing financial difficulty. See Note 2 — Current Accounting Developments and Summary of Significant Accounting Policies — Significant Accounting Policies Update — Loan Modifications to the Consolidated Financial Statements in this Form 10-Q for additional information. As part of the Company’s loss mitigation efforts, the Company may agree to modify the contractual terms of a loan to assist borrowers experiencing financial difficulty. The Company negotiates loan modifications on a case-by-case basis to achieve mutually agreeable terms that maximize loan collectability and meet the borrower’s financial needs. The Company considers various factors to identify borrowers experiencing financial difficulty. The primary factor for consumer borrowers is delinquency status. For commercial loan borrowers, these factors include credit risk ratings, the probability of loan risk rating downgrades, and overall risk profile changes. The modification may include, but is not limited to, payment deferrals, interest rate reductions, term extensions, principal forgiveness, or a combination of such modifications. Commercial loan borrowers that require immaterial modifications such as insignificant interest rate changes, short-term extensions (90 days or less) from the original maturity date, or temporary waivers or extensions of financial covenants which would not constitute material credit actions, are generally not considered to be experiencing financial difficulty and are not included in the disclosure. Insignificant payment deferrals (three months or less in the last 12 months) are also not included in the disclosure.

The following tables present the amortized cost of loans that were modified during the three and nine months ended September 30, 2023 by loan class and modification type:

	Three Months Ended September 30, 2023
	Modification Type
($ in thousands)	Term Extension		Payment Delay		Combination: Term Extension/ Payment Delay		Combination: Rate Reduction/ Term Extension		Combination: Rate Reduction/ Payment Delay		Total		Modification as a % of Loan Class
Commercial:
C&I	$	1,682	$	11,603	$	—	$	—	$	—	$	13,285	0.08	%
CRE:
CRE	13,469		—		—		—		—		13,469		0.07	%
Total commercial	15,151		11,603		—		—		—		26,754
Consumer:
Residential mortgage:
Single-family residential:	—		2,944		1,260		—		—		4,204		0.03	%
HELOCs	—		—		334		—		183		517		0.03	%
Total consumer	—		2,944		1,594		—		183		4,721
Total	$	15,151	$	14,547	$	1,594	$	—	$	183	$	31,475

	Nine Months Ended September 30, 2023
	Modification Type
($ in thousands)	Term Extension		Payment Delay		Combination: Term Extension/ Payment Delay		Combination: Rate Reduction/ Term Extension		Combination: Rate Reduction/ Payment Delay		Total		Modification as a % of Loan Class
Commercial:
C&I	$	44,120	$	20,793	$	—	$	—	$	—	$	64,913	0.41	%
CRE:
CRE	13,979		—		—		32,724		—		46,703		0.23	%
Total commercial	58,099		20,793		—		32,724		—		111,616
Consumer:
Residential mortgage:
Single-family residential:	—		7,276		1,809		—		—		9,085		0.07	%
HELOCs	—		741		1,053		—		183		1,977		0.11	%
Total consumer	—		8,017		2,862		—		183		11,062
Total	$	58,099	$	28,810	$	2,862	$	32,724	$	183	$	122,678

The following tables present the financial effects of the loan modifications for the three and nine months ended September 30, 2023 by loan class and modification type:

	Financial Effects of Loan Modifications
	Three Months Ended September 30, 2023
($ in thousands)	Principal Forgiveness		Weighted-Average Interest Rate Reduction		Weighted-Average Term Extension (in years)	Weighted-Average Payment Delay (in years)
Commercial:
C&I	$	26	—	%	3.00	1.54
CRE	—		—	%	1.08	—
Consumer:
Single-family residential	—		—	%	10.00	0.96
HELOCs	—		0.50	%	16.68	0.71
Total	$	26

	Financial Effects of Loan Modifications
	Nine months ended September 30, 2023
($ in thousands)	Principal Forgiveness			Weighted-Average Interest Rate Reduction			Weighted-Average Term Extension (in years)	Weighted-Average Payment Delay (in years)
Commercial:
C&I	$	371	(1)	—	%	(1)	1.41	1.15
CRE	—			3.00	%		2.09	—
Consumer:
Single-family residential	—			—	%		9.91	0.95
HELOCs	—			0.50	%		15.36	0.52
Total	$	371

(1)Comprised of C&I loans modified during the nine months ended September 30, 2023 where the interest rate is waived in addition to principal forgiveness. No recorded investment was outstanding as of September 30, 2023.

A modified loan may become delinquent and may result in a payment default (generally 90 days past due) subsequent to modification. There were no loans that received modifications which subsequently defaulted during the three and nine months ended September 30, 2023.

The Company closely monitors the performance of modified loans to borrowers experiencing financial difficulty to understand the effectiveness of its modification efforts. The following table presents the performance of loans that were modified as of September 30, 2023 since the adoption of ASU 2022-02 on January 1, 2023.

	Payment Performance as of September 30, 2023
($ in thousands)	Current		30 - 89 Days Past Due		90+ Days Past Due		Total
Commercial:
C&I	$	58,481	$	—	$	6,432	$	64,913
CRE:
CRE	46,703		—		—		46,703
Total commercial	105,184		—		6,432		111,616
Consumer:
Residential mortgage:
Single-family residential	7,430		1,190		465		9,085
HELOCs	1,236		741		—		1,977
Total consumer	8,666		1,931		465		11,062
Total	$	113,850	$	1,931	$	6,897	$	122,678

As of September 30, 2023, commitments to lend additional funds to borrowers whose loans were modified were $5.8 million.

Troubled Debt Restructurings Prior to the Adoption of ASU 2022-02

Prior to the adoption of ASU 2022-02, the Company accounted for a modification to the contractual terms of a loan that resulted in granting a concession to a borrower experiencing financial difficulties as a TDR. ASU 2022-02 eliminated TDR accounting prospectively for all restructurings occurring on or after January 1, 2023.

The following table presents the additions to TDRs for the three and nine months ended September 30, 2022:

	Loans Modified as TDRs
	Three Months Ended September 30, 2022							Nine Months Ended September 30, 2022
($ in thousands)	Number of Loans	Pre-Modification Outstanding Recorded Investment		Post-Modification Outstanding Recorded Investment (1)		Financial Impact (2)		Number of Loans	Pre-Modification Outstanding Recorded Investment		Post-Modification Outstanding Recorded Investment (1)		Financial Impact (2)
Commercial:
C&I	1	$	499	$	496	$	98	4	$	30,633	$	17,802	$	16,729
Total commercial	1	499		496		98		4	30,633		17,802		16,729
Consumer:
Residential mortgage:
HELOCs	1	62		69		2		1	62		69		2
Total residential mortgage	1	62		69		2		1	62		69		2
Total consumer	1	62		69		2		1	62		69		2
Total	2	$	561	$	565	$	100	5	$	30,695	$	17,871	$	16,731

(1)Includes subsequent payments after modification and reflects the balance as of September 30, 2022.

(2)Includes charge-offs since the modification date.

The following table presents the TDR post-modification outstanding balances by the primary modification type for the three and nine months ended September 30, 2022:

	Modification Type
	Three Months Ended September 30, 2022						Nine Months Ended September 30, 2022
($ in thousands)	Principal		Other		Total		Principal (1)		Other (2)		Total
Commercial:
C&I	$	496	$	—	$	496	$	9,609	$	8,193	$	17,802
Total commercial	496		—		496		9,609		8,193		17,802
Consumer:
Residential mortgage:
HELOCs	69		—		69		69		—		69
Total residential mortgage	69		—		69		69		—		69
Total consumer	69		—		69		69		—		69
Total	$	565	$	—	$	565	$	9,678	$	8,193	$	17,871

(1)Includes principal deferments that modify the terms of the loan from principal and interest payments to interest payments only.

(2)Includes increase in new commitments.

After a loan is modified as a TDR, the Company continues to monitor its performance under its most recent restructured terms. A TDR may become delinquent and result in payment default (generally 90 days past due) subsequent to restructuring. The following table presents information on loans that entered into default during the three and nine months ended September 30, 2022 that were modified as TDRs during the 12 months preceding payment default:

	Loan Modified as TDRs that Subsequently Defaulted
	Three Months Ended September 30, 2022			Nine Months Ended September 30, 2022
($ in thousands)	Number of Loans	Recorded Investment		Number of Loans	Recorded Investment
Commercial:
C&I	—	$	—	2	$	13,901
CRE:
Multifamily residential	—	—		1	1,008
Total CRE	—	—		1	1,008
Total commercial	—	—		3	14,909
Total	—	$	—	3	$	14,909

As of December 31, 2022, the remaining lending commitments to borrowers whose terms of their outstanding owed balances were modified as TDRs was $16.2 million.

Allowance for Credit Losses

The Company has a current expected credit losses framework for all financial assets measured at amortized cost and certain off-balance sheet credit exposures. The Company’s allowance for credit losses, which includes both the allowance for loan losses and the allowance for unfunded credit commitments, is calculated with the objective of maintaining a reserve sufficient to absorb losses inherent in our credit portfolios. The measurement of the allowance for credit losses is based on management’s best estimate of lifetime expected credit losses, and periodic evaluation of the loan portfolio, lending-related commitments, and other relevant factors.

The allowance for credit losses is deducted from the amortized cost basis of a financial asset or a group of financial assets so that the balance sheet reflects the net amount the Company expects to collect. Amortized cost is the principal balance outstanding, net of purchase premiums and discounts, deferred fees and costs, and escrow advances. Subsequent changes in expected credit losses are recognized in net income as a provision for, or a reversal of, credit loss expense.

The allowance for credit losses estimation involves procedures to consider the unique risk characteristics of the portfolio segments. The majority of the Company’s credit exposures that share risk characteristics with other similar exposures are collectively evaluated. The collectively evaluated loans include performing loans and unfunded credit commitments. If an exposure does not share risk characteristics with other exposures, the Company generally estimates expected credit losses on an individual basis.

Allowance for Collectively Evaluated Loans

The allowance for collectively evaluated loans consists of a quantitative component that assesses the different risk factors considered in our models and a qualitative component that considers risk factors external to the models. Each of these components are described below.

Quantitative Component — The Company applies quantitative methods to estimate loan losses by considering a variety of factors such as historical loss experience, the current credit quality of the portfolio, and an economic outlook over the life of the loan. The Company incorporates forward-looking information using macroeconomic scenarios, which include variables that are considered key drivers of increases and decreases in credit losses. The Company utilizes a probability-weighted, multiple-scenario forecast approach. These scenarios may consist of a base forecast representing management's view of the most likely outcome, combined with downside or upside scenarios reflecting possible worsening or improving economic conditions. The quantitative models incorporate a probability-weighted calculation of these macroeconomic scenarios over a reasonable and supportable forecast period. If the life of the loans extends beyond the reasonable and supportable forecast period, the Company will consider historical experience or long-run macroeconomic trends over the remaining life of the loans to estimate the allowance for loan losses.

There were no changes to the reasonable and supportable forecast period, except to the C&I segment, and no changes to the reversion to the historical loss experience method for the three and nine months ended September 30, 2023 and 2022. The reasonable and supportable forecast period for the C&I segment changed from 11 quarters to eight quarters due to model redevelopment during the third quarter of 2023.

The following table provides key credit risk characteristics and macroeconomic variables that the Company uses to estimate the expected credit losses by portfolio segment:

Portfolio Segment	Risk Characteristics	Macroeconomic Variables
C&I	Age percentage, size at origination, delinquency status, sector and risk rating	Unemployment rate, Gross Domestic Product (“GDP”), and Two-Ten treasury spread (1)
CRE, Multifamily residential, and Construction and land	Delinquency status, maturity date, collateral value, property type, and geographic location	Unemployment rate, GDP, and U.S. Treasury rates
Single-family residential and HELOCs	FICO score, delinquency status, maturity date, collateral value, and geographic location	Unemployment rate, GDP, and home price index
Other consumer	Loss rate approach	Immaterial (2)

(1)Macroeconomic variables were updated due to model redevelopment.

(2)Macroeconomic variables are included in the qualitative estimate.

Quantitative Component — Allowance for Loan Losses for the Commercial Loan Portfolio

The Company’s C&I lifetime loss rate model estimates the loss rate expected over the life of a loan. This loss rate is applied to the amortized cost basis, excluding accrued interest receivable, to determine expected credit losses. The lifetime loss rate model’s reasonable and supportable period spans eight quarters, thereafter, immediately reverting to the historical average loss rate, expressed through the loan-level lifetime loss rate.

To generate estimates of expected loss at the loan level for CRE, multifamily residential, and construction and land loans, projected probabilities of default (“PDs”) and loss given defaults (“LGDs”) are applied to the estimated exposure at default, considering the term and payment structure of the loan. The forecast of future economic conditions returns to long-run historical economic trends within the reasonable and supportable period.

To estimate the life of a loan under both models, the contractual term of the loan is adjusted for estimated prepayments based on historical prepayment experience.

Quantitative Component — Allowance for Loan Losses for the Consumer Loan Portfolio

For single-family residential and HELOC loans, projected PDs and LGDs are applied to the estimated exposure at default, considering the term and payment structure of the loan, to generate estimates of expected loss at the loan level. The forecast of future economic conditions returns to long-run historical economic trends after the reasonable and supportable period. To estimate the life of a loan for the single-family residential and HELOC loan portfolios, the contractual term of the loan is adjusted for estimated prepayments based on historical prepayment experience. For other consumer loans, the Company uses a loss rate approach.

Qualitative Component — The Company also considers the following qualitative factors in the determination of the collectively evaluated allowance if these factors have not already been captured by the quantitative model. Such qualitative factors may include, but are not limited to:

—     loan growth trends;

—    the volume and severity of past due financial assets, and the volume and severity of adversely classified financial assets;

—    the Company’s lending policies and procedures, including changes in lending strategies, underwriting standards, collection, write-off, and recovery practices;

—    knowledge of a borrower’s operations;

—    the quality of the Company’s credit review system;

—    the experience, ability and depth of the Company’s management and associates;

—    the effect of other external factors such as the regulatory and legal environments, or changes in technology;

—    actual and expected changes in international, national, regional, and local economic and business conditions in which the Company operates; and

—    risk factors in certain industry sectors not captured by the quantitative models.

The magnitude of the impact of these factors on the Company’s qualitative assessment of the allowance for credit losses changes from period to period according to changes made by management in its assessment of these factors. The extent to which these factors change may be dependent on whether they are already reflected in quantitative loss estimates during the current period and the extent to which changes in these factors diverge from period to period.

While the Company’s allowance methodologies strive to reflect all relevant credit risk factors, there continues to be uncertainty associated with, but not limited to, potential imprecision in the estimation process due to the inherent time lag of obtaining information and normal variations between expected and actual outcomes. The Company may hold additional qualitative reserves that are designed to provide coverage for losses attributable to such risk.

Allowance for Individually Evaluated Loans

When a loan no longer shares similar risk characteristics with other loans, such as in the case of certain nonaccrual loans, the Company estimates the allowance for loan losses on an individual loan basis. The allowance for loan losses for individually evaluated loans is measured as the difference between the recorded value of the loans and their fair value. For loans evaluated individually, the Company uses one of three different asset valuation measurement methods: (1) the fair value of collateral less costs to sell; (2) the present value of expected future cash flows; or (3) the loan's observable market price. If an individually evaluated loan is determined to be collateral dependent, the Company applies the fair value of the collateral less costs to sell method. If an individually evaluated loan is determined not to be collateral dependent, the Company uses the present value of future cash flows or the observable market value of the loan.

•Collateral-Dependent Loans — The allowance of a collateral-dependent loan is limited to the difference between the recorded value and fair value of the collateral less cost of disposal or sale. As of September 30, 2023, collateral-dependent commercial and consumer loans totaled $18.1 million and $15.2 million, respectively. In comparison, collateral-dependent commercial and consumer loans totaled $47.4 million and $13.4 million, respectively, as of December 31, 2022. The collateral-dependent loans decreased from December 31, 2022, predominantly driven by the adoption of ASU 2022-02 related to the elimination of TDR guidance. The Company's collateral-dependent loans were secured by real estate. As of both September 30, 2023 and December 31, 2022, the collateral value of the properties securing the collateral-dependent loans, net of selling costs, exceeded the recorded value of the loans.

The following tables summarize the activity in the allowance for loan losses by portfolio segments for the three and nine months ended September 30, 2023 and 2022:

		Three Months Ended September 30, 2023
		Commercial								Consumer
				CRE						Residential Mortgage
($ in thousands)		C&I		CRE		Multifamily Residential		Construction and Land		Single-Family Residential		HELOCs		Other Consumer		Total
Allowance for loan losses, beginning of period		$	375,333	$	168,505	$	22,938	$	11,325	$	51,513	$	4,526	$	1,260	$	635,400
Provision for (reversal of) credit losses on loans	(a)	13,006		12,952		772		8,302		3,353		(705)		456		38,136
Gross charge-offs		(7,074)		(3,466)		—		(10,413)		—		(41)		(13)		(21,007)
Gross recoveries		2,279		49		452		2		64		15		—		2,861
Total net (charge-offs) recoveries		(4,795)		(3,417)		452		(10,411)		64		(26)		(13)		(18,146)
Foreign currency translation adjustment		133		—		—		—		—		—		—		133
Allowance for loan losses, end of period		$	383,677	$	178,040	$	24,162	$	9,216	$	54,930	$	3,795	$	1,703	$	655,523

		Three Months Ended September 30, 2022
		Commercial								Consumer
				CRE						Residential Mortgage
($ in thousands)		C&I		CRE		Multifamily Residential		Construction and Land		Single-Family Residential		HELOCs		Other Consumer		Total
Allowance for loan losses, beginning of period		$	363,282	$	140,245	$	26,552	$	6,682	$	21,840	$	3,220	$	1,449	$	563,270
Provision for credit losses on loans	(a)	9,575		5,299		5,047		817		6,182		99		255		27,274
Gross charge-offs		(6,894)		(288)		(5,938)		—		(775)		—		(10)		(13,905)
Gross recoveries		7,172		45		19		7		16		5		—		7,264
Total net recoveries (charge-offs)		278		(243)		(5,919)		7		(759)		5		(10)		(6,641)
Foreign currency translation adjustment		(1,386)		—		—		—		—		—		—		(1,386)
Allowance for loan losses, end of period		$	371,749	$	145,301	$	25,680	$	7,506	$	27,263	$	3,324	$	1,694	$	582,517

		Nine Months Ended September 30, 2023
		Commercial								Consumer
				CRE						Residential Mortgage
($ in thousands)		C&I		CRE		Multifamily Residential		Construction and Land		Single-Family Residential		HELOCs		Other Consumer		Total
Allowance for loan losses, December 31, 2022		$	371,700	$	149,864	$	23,373	$	9,109	$	35,564	$	4,475	$	1,560	$	595,645
Impact of ASU 2022-02 adoption		5,683		337		6		—		1		1		—		6,028
Allowance for loan losses, beginning of period		377,383		150,201		23,379		9,109		35,565		4,476		1,560		601,673
Provision for (reversal of) credit losses on loans	(a)	17,587		33,313		303		10,507		19,296		(569)		244		80,681
Gross charge-offs		(16,309)		(5,838)		—		(10,413)		—		(138)		(101)		(32,799)
Gross recoveries		5,555		364		480		13		69		26		—		6,507
Total net (charge-offs) recoveries		(10,754)		(5,474)		480		(10,400)		69		(112)		(101)		(26,292)
Foreign currency translation adjustment		(539)		—		—		—		—		—		—		(539)
Allowance for loan losses, end of period		$	383,677	$	178,040	$	24,162	$	9,216	$	54,930	$	3,795	$	1,703	$	655,523

		Nine Months Ended September 30, 2022
		Commercial								Consumer
				CRE						Residential Mortgage
($ in thousands)		C&I		CRE		Multifamily Residential		Construction and Land		Single-Family Residential		HELOCs		Other Consumer		Total
Allowance for loan losses, beginning of period		$	338,252	$	150,940	$	14,400	$	15,468	$	17,160	$	3,435	$	1,924	$	541,579
Provision for (reversal of) credit losses on loans	(a)	37,867		(5,013)		16,680		(8,027)		10,569		59		(140)		51,995
Gross charge-offs		(18,322)		(1,357)		(5,947)		—		(775)		(193)		(90)		(26,684)
Gross recoveries		16,688		731		547		65		309		23		—		18,363
Total net (charge-offs) recoveries		(1,634)		(626)		(5,400)		65		(466)		(170)		(90)		(8,321)
Foreign currency translation adjustment		(2,736)		—		—		—		—		—		—		(2,736)
Allowance for loan losses, end of period		$	371,749	$	145,301	$	25,680	$	7,506	$	27,263	$	3,324	$	1,694	$	582,517

In addition to the allowance for loan losses, the Company maintains an allowance for unfunded credit commitments. The Company has three general areas for which it provides the allowance for unfunded credit commitments: (1) recourse obligations for loans sold, (2) letters of credit, and (3) unfunded lending commitments. The allowance for unfunded credit commitments is maintained at a level that management believes to be sufficient to absorb estimated expected credit losses related to unfunded credit facilities. See Note 11 — Commitments and Contingencies to the Consolidated Financial Statements in this Form 10-Q for additional information related to unfunded credit commitments. The following table summarizes the activities in the allowance for unfunded credit commitments for the three and nine months ended September 30, 2023 and 2022:

		Three Months Ended September 30,				Nine Months Ended September 30,
($ in thousands)		2023		2022		2023		2022
Unfunded credit facilities
Allowance for unfunded credit commitments, beginning of period		$	29,728	$	24,304	$	26,264	$	27,514
Provision for (reversal of) credit losses on unfunded credit commitments	(b)	3,864		(274)		7,319		(3,495)
Foreign currency translation adjustment		(3)		11		6		22
Allowance for unfunded credit commitments, end of period		$	33,589	$	24,041	$	33,589	$	24,041
Provision for credit losses	(a) + (b)	$	42,000	$	27,000	$	88,000	$	48,500

The allowance for credit losses was $689.1 million as of September 30, 2023, an increase of $67.2 million, compared with $621.9 million as of December 31, 2022. The increase in the allowance for credit losses was primarily driven by net loan growth and economic forecasts that reflect continued caution given persistent high inflation, the high interest rate environment and the CRE market outlook.

The Company considers multiple economic scenarios to develop the estimate of the allowance for loan losses. The scenarios may consist of a baseline forecast representing management's view of the most likely outcome; downside and upside scenarios that reflect possible worsening or improving economic conditions, respectively. The Company assigned the same weightings to its baseline, upside and downside scenarios as of September 30, 2023 and December 31, 2022. Management remains cautious regarding the economic outlook, given the high level of inflation, high interest rates, recent strain to the financial system, concerns on global oil prices, and ongoing global conflicts. The 2023 full year U.S. baseline GDP growth forecast as of September 30, 2023, has improved, compared with that as of December 31, 2022. However the 2024 full year U.S. baseline GDP growth forecast remained at 1.4%, compared with 2.0% forecasted as of December 31, 2022, as interest-sensitive spending weakens amid the elevated interest rate environment. The 2023 full year U.S. unemployment rate is forecasted to be at 3.7%, which improved from that forecasted as of December 31, 2022. Compared with the baseline scenario, the downside scenario assumes a recession in the fourth quarter of 2023 due to a combination of increasing supply shortages, geopolitical tensions, high inflation, and high interest rates. The upside scenario assumes the economy experiences full employment in the near-term, and stable financial markets boosting consumer confidence.

Loan Transfers, Sales and Purchases

The Company’s primary business focus is on directly originated loans. The Company also purchases loans and participates in loan financing with other banks. In the normal course of business, the Company also provides other financial institutions with the ability to participate in commercial loans that it originates, by selling loans to such institutions. Purchased loans may be transferred from held-for-investment to held-for-sale, and write-downs to allowance for loan losses are recorded, when appropriate. The following tables provide information on the carrying value of loans transferred, sold and purchased for the held-for-investment portfolio, during the three and nine months ended September 30, 2023 and 2022:

	Three Months Ended September 30, 2023
	Commercial						Consumer
			CRE				Residential Mortgage
($ in thousands)	C&I		CRE		Construction and Land		Single-Family Residential		Total
Loans transferred from held-for-investment to held-for-sale (1)	$	201,299	$	25,890	$	—	$	—	$	227,189
Sales (2)(3)	$	199,511	$	29,357	$	—	$	—	$	228,868
Purchases (4)	$	19,588	$	—	$	—	$	140,771	$	160,359

	Three Months Ended September 30, 2022
	Commercial						Consumer
			CRE				Residential Mortgage
($ in thousands)	C&I		CRE		Multifamily Residential		Single-Family Residential		Total
Loans transferred from held-for-investment to held-for-sale (1)	$	59,069	$	33,616	$	14,500	$	5,178	$	112,363
Sales (2)(3)	$	87,597	$	33,616	$	—	$	5,952	$	127,165
Purchases (4)	$	56,507	$	—	$	—	$	1,155	$	57,662

	Nine Months Ended September 30, 2023
	Commercial						Consumer
			CRE				Residential Mortgage
($ in thousands)	C&I		CRE		Construction and Land		Single-Family Residential		Total
Loans transferred from held-for-investment to held-for-sale (1)	$	469,571	$	29,490	$	8,154	$	—	$	507,215
Sales (2)(3)	$	491,178	$	32,957	$	8,154	$	—	$	532,289
Purchases (4)	$	80,550	$	—	$	—	$	351,880	$	432,430

	Nine Months Ended September 30, 2022
	Commercial						Consumer
			CRE				Residential Mortgage
($ in thousands)	C&I		CRE		Multifamily Residential		Single-Family Residential		Total
Loans transferred from held-for-investment to held-for-sale (1)	$	378,841	$	65,250	$	14,500	$	5,178	$	463,769
Loans transferred from held-for-sale to held-for-investment	$	—	$	—	$	—	$	631	$	631
Sales (2)(3)	$	375,100	$	65,250	$	—	$	6,403	$	446,753
Purchases (4)	$	361,169	$	—	$	—	$	238,253	$	599,422

(1)Includes write-downs of $3.6 million and $4.2 million to the allowance for loan losses related to loans transferred from held-for-investment to held-for-sale for the three and nine months ended September 30, 2023, respectively, and $8.7 million and $8.9 million for the three and nine months ended September 30, 2022, respectively.

(2)Includes originated loans sold of $204.1 million and $407.3 million for the three and nine months ended September 30, 2023, respectively, and $86.2 million and $253.9 million for the three and nine months ended September 30, 2022, respectively. Originated loans sold consisted primarily of C&I loans for each of the three and nine months ended September 30, 2023, and C&I and CRE loans for each of the three and nine months ended September 30, 2022.

(3)Includes $24.7 million and $125.0 million of purchased loans sold in the secondary market for the three and nine months ended September 30, 2023, respectively, and $40.9 million and $192.9 million for the three and nine months ended September 30, 2022, respectively.

(4)C&I loan purchases were comprised primarily of syndicated C&I term loans.

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Investments in Qualified Affordable Housing Partnerships, Tax Credit and Other Investments, Net and Variable Interest Entities

9 Months Ended

Sep. 30, 2023

Investments in Qualified Affordable Housing Partnerships, Tax Credit and Other Investments, Net and Variable Interest Entities [Abstract]

Investments in Qualified Affordable Housing Partnerships, Tax Credit and Other Investments, Net and Variable Interest Entities

Investments in Qualified Affordable Housing Partnerships, Tax Credit and Other Investments, Net and Variable Interest Entities

The CRA encourages banks to meet the credit needs of their communities, particularly low- and moderate-income individuals and neighborhoods. The Company invests in certain affordable housing projects in the form of ownership interests in limited partnerships or limited liability companies that qualify for CRA consideration and tax credits. These entities are formed to develop and operate apartment complexes designed as high-quality affordable housing for lower income tenants throughout the U.S. To fully utilize the available tax credits, each of these entities must meet the regulatory affordable housing requirements for a 15-year minimum compliance period. In addition to affordable housing projects, the Company invests in small business investment companies and new market tax credit projects that qualify for CRA consideration, as well as eligible projects that qualify for renewable energy and historic tax credits. Investments in renewable energy tax credits help promote the development of renewable energy sources, and investments in historic tax credits promote the rehabilitation of historic buildings and economic revitalization of the surrounding areas. For the Company’s accounting policies on tax credit investments, see Note 1 — Summary of Significant Accounting Policies — Significant Accounting Policies — Securities and Investments in Qualified Affordable Housing Partnerships, Tax Credit and Other Investments, Net to the Consolidated Financial Statements in the Company’s 2022 Form 10-K. For a discussion on the Company’s impairment evaluation and monitoring process of tax credit investments, refer to Note 3 — Fair Value Measurement and Fair Value of Financial Instruments — Investments in Qualified Affordable Housing Partnerships, Tax Credit and Other Investments, Net to the Consolidated Financial Statements in this Form 10-Q.

The following table presents investments and unfunded commitments of the Company’s qualified affordable housing partnerships, tax credit, and other investments as of September 30, 2023 and December 31, 2022:

	September 30, 2023				December 31, 2022
($ in thousands)	Assets		Liabilities - Unfunded Commitments (1)		Assets		Liabilities - Unfunded Commitments (1)
Investments in qualified affordable housing partnerships, net	$	412,004	$	252,552	$	413,253	$	266,654
Investments in tax credit and other investments, net	489,555		345,072		350,003		185,797
Total	$	901,559	$	597,624	$	763,256	$	452,451

(1)Included in Accrued expenses and other liabilities on the Consolidated Balance Sheet.

Investments in tax credit and other investments, net presented in the table above include equity securities that are mutual funds with readily determinable fair values of $23.6 million and $24.0 million as of September 30, 2023 and December 31, 2022, respectively. The Company invests in these mutual funds for CRA purposes.

The following table presents additional information related to the investments in qualified affordable housing partnerships, tax credit and other investments for the three and nine months ended September 30, 2023 and 2022:

	Three Months Ended September 30,				Nine Months Ended September 30,
($ in thousands)	2023		2022		2023		2022
Investments in qualified housing partnerships, net:
Tax credits and other tax benefits recognized	$	15,660	$	13,180	$	47,058	$	38,764
Amortization expense included in income tax expense	$	11,587	$	10,431	$	34,759	$	30,498
Investments in tax credit and other investments, net:
Amortization of tax credit and other investments (1)	$	49,694	$	19,874	$	115,718	$	48,753
Unrealized losses on equity securities with readily determinable values	$	(674)	$	(1,014)	$	(682)	$	(2,958)

(1)Includes net impairment losses of $790 thousand for the three months ended September 30, 2023, and net impairment recoveries of $831 thousand for the nine months ended September 30, 2023. The activity for both periods was primarily related to historic tax credits. In comparison, there were no impairment recoveries or losses for three or nine months ended September 30, 2022.

Variable Interest Entities

The majority of both the investments in affordable housing partnerships and tax credit and other investments discussed above are variable interest entities where the Company is a limited partner in these partnerships, and an unrelated third party is typically the general partner or managing member who has control over the significant activities of these investments. While the Company’s interest in some of the investments may exceed 50% of the outstanding equity interests, the Company does not consolidate these investments due to the general partner’s or managing member’s ability to manage the entity, which is indicative of the general partner’s or managing member’s power over the entity. The Company’s maximum exposure to loss in connection with these partnerships consists of the unamortized investment balance and any tax credits claimed that may become subject to recapture.

Other Investments

The Company acquired a 49.99% equity interest in Rayliant during the third quarter of 2023. Rayliant is an asset manager specializing in asset allocation and investment in developed and emerging markets. This investment will expand the Bank’s wealth management business and provide its customers with additional access to institutional-quality investment management products and services. The investment in Rayliant is accounted for under the equity method of accounting and is included in Other assets on the Consolidated Balance Sheet. The Company paid $94.7 million in cash and granted PRSUs that are contingently issuable at vesting. The PRSUs vest on September 1, 2028 into a variable number of the Company’s shares of common stock, ranging from 20% to 200% of the 349,138 shares initially underlying such PRSUs, based on Rayliant’s achievement of certain financial performance targets during the future performance period. For additional information related to these equity contracts accounted for as derivative liability, refer to Note 3 — Fair Value Measurement and Fair Value of Financial Instruments and Note 6 — Derivatives to the Consolidated Financial Statements in this Form 10-Q. The carrying value of the Company's investment in Rayliant was $110.9 million as of September 30, 2023, in which $100.7 million comprised of equity method goodwill.

The Company also held equity securities without readily determinable fair values totaling $148.0 million and $36.5 million as of September 30, 2023 and December 31, 2022, respectively. These equity securities without readily determinable fair values are included in Other Assets on the Consolidated Balance Sheet.

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Goodwill	9 Months Ended
	Sep. 30, 2023
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill	GoodwillTotal goodwill was $465.7 million as of both September 30, 2023 and December 31, 2022. The Company’s goodwill impairment test is performed annually, as of December 31, or more frequently as events occur or circumstances change that would more-likely-than-not reduce the fair value of a reporting unit below its carrying value. Based on the Company’s annual goodwill impairment test as of December 31, 2022, there was no impairment. Additional information pertaining to the Company’s accounting policy for goodwill is summarized in Note 1 — Summary of Significant Accounting Policies — Significant Accounting Policies — Goodwill to the Consolidated Financial Statements in the Company’s 2022 Form 10-K. The Company performed an analysis of goodwill during the third quarter of 2023 that consisted of a qualitative assessment to determine if it is more likely than not that the carrying values of each reporting unit exceeded their estimated fair values. The results of this analysis indicated that no impairment of goodwill existed as of September 30, 2023.

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Short-Term Borrowings and Long-Term Debt

9 Months Ended

Sep. 30, 2023

Debt Disclosure [Abstract]

Short-Term Borrowings and Long-Term Debt

Short-Term Borrowings and Long-Term Debt

Short-Term Borrowings — Bank Term Funding Program

As of September 30, 2023, the Company’s short-term borrowings consisted of funds from the Bank Term Funding Program (“BTFP”). In March 2023, the Federal Reserve announced the creation of the BTFP, which was designed to provide additional liquidity to U.S. depository institutions. The advances will be limited to the par value of eligible collateral pledged by the borrower, for a term of up to one year. U.S. federally insured depository institutions can request advances under the BTFP until at least March 11, 2024.

The Company pledged eligible U.S. government agency and U.S. government-sponsored enterprise debt and mortgage-backed securities, and U.S. Treasury securities as collateral for the borrowings under the BTFP. As of September 30, 2023, the carrying amount of the Company’s pledged securities to the BTFP totaled $4.34 billion with a remaining borrowing capacity of $238.3 million. In comparison, there were no short-term borrowings as of December 31, 2022. The following table presents details of the Company’s short-term borrowings as of September 30, 2023.

			September 30, 2023
($ in thousands)	Interest Rate	Maturity Date	Amount
Short-term borrowings	4.37%	3/19/2024	$	4,500,000

Long-Term Debt — Junior Subordinated Debt

Long-term debt totaled $148.2 million as of September 30, 2023 and $148.0 million as of December 31, 2022. During the third quarter of 2023, all junior subordinated debt that referenced London Interbank Offered Rate have transitioned to a Secured Overnight Financing Rate-based replacement rate plus the applicable stated margin. The junior subordinated debt had coupon interest rates ranging from 7.02% to 7.57% as of September 30, 2023 and 6.12% to 6.67% as of December 31, 2022. The junior subordinated debt had remaining maturities ranging between 11.1 years and 14.0 years as of September 30, 2023. For additional information on the junior subordinated debt, refer to Note 10 — Federal Home Loan Bank Advances and Long-Term Debt to the Consolidated Financial Statements in the Company’s 2022 Form 10-K.

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Commitments and Contingencies

9 Months Ended

Sep. 30, 2023

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

Commitments and Contingencies

Commitments to Extend Credit — In the normal course of business, the Company provides loan commitments to customers on predetermined terms. These outstanding commitments to extend credit are not reflected in the accompanying Consolidated Financial Statements. While the Company does not anticipate losses from these transactions, commitments to extend credit are included in determining the appropriate level of allowance for unfunded credit commitments, and outstanding commercial letters of credit and standby letters of credit (“SBLCs”).

The following table presents the Company’s credit-related commitments as of September 30, 2023 and December 31, 2022:

	September 30, 2023										December 31, 2022
($ in thousands)	Expire in One Year or Less		Expire After One Year Through Three Years		Expire After Three Years Through Five Years		Expire After Five Years		Total		Total
Loan commitments	$	4,650,619	$	3,689,245	$	1,037,254	$	139,325	$	9,516,443	$	8,211,571
Commercial letters of credit and SBLCs	875,757		405,377		122,255		1,124,405		2,527,794		2,291,966
Total	$	5,526,376	$	4,094,622	$	1,159,509	$	1,263,730	$	12,044,237	$	10,503,537

Loan commitments are agreements to lend to customers provided there are no violations of any conditions established in the agreement. Commitments generally have fixed expiration dates or other termination clauses and may require commitment fees. Since many of the commitments are expected to expire without being drawn upon, the total commitment amounts do not necessarily represent future funding requirements.

Commercial letters of credit are issued to facilitate domestic and foreign trade transactions, while SBLCs are generally contingent upon the failure of the customers to perform according to the terms of the underlying contract with the third party. As a result, the total contractual amounts do not necessarily represent future funding requirements. The Company’s historical experience is that SBLCs typically expire without being funded. Additionally, in many cases, the Company holds collateral in various forms against these SBLCs. As part of its risk management activities, the Company monitors the creditworthiness of customers in conjunction with its SBLC exposure. Customers are obligated to reimburse the Company for any payment made on the customers’ behalf. If the customers fail to pay, the Company would, as applicable, liquidate the collateral and/or offset existing accounts. As of September 30, 2023, total letters of credit of $2.53 billion consisted of SBLCs of $2.50 billion and commercial letters of credit of $32.7 million. In comparison, as of December 31, 2022, total letters of credit of $2.29 billion consisted of SBLCs of $2.27 billion and commercial letters of credit of $21.6 million. As of both September 30, 2023 and December 31, 2022, substantially all SBLCs were graded as “Pass” utilizing the Bank’s internal credit risk rating system.

The Company applies the same credit underwriting criteria to extend loans, commitments, and conditional obligations to customers. Each customer’s creditworthiness is evaluated on a case-by-case basis. Collateral and financial guarantees may be obtained based on management’s assessment of a customer’s credit risk. Collateral may include cash, accounts receivable, inventory, personal property, plant and equipment, and real estate property.

Estimated exposure to loss from these commitments is included in the allowance for unfunded credit commitments and amounted to $33.6 million and $26.2 million as of September 30, 2023 and December 31, 2022, respectively.

Guarantees — From time to time, the Company sells or securitizes single-family and multifamily residential loans with recourse in the ordinary course of business. The Company is obligated to repurchase up to the recourse component of the loans if the loans default. The following table presents the carrying amounts of loans sold or securitized with recourse and the maximum potential future payments as of September 30, 2023 and December 31, 2022:

	Maximum Potential Future Payments												Carrying Value
	September 30, 2023										December 31, 2022		September 30, 2023		December 31, 2022
($ in thousands)	Expire in One Year or Less		Expire After One Year Through Three Years		Expire After Three Years Through Five Years		Expire After Five Years		Total		Total		Total		Total
Single-family residential loans sold or securitized with recourse	$	28	$	23	$	28	$	6,013	$	6,092	$	6,781	$	6,092	$	6,781
Multifamily residential loans sold or securitized with recourse	—		—		66		14,930		14,996		14,996		19,887		21,320
Total	$	28	$	23	$	94	$	20,943	$	21,088	$	21,777	$	25,979	$	28,101

The Company’s recourse reserve related to these guarantees is included in the allowance for unfunded credit commitments and totaled $35 thousand and $37 thousand as of September 30, 2023 and December 31, 2022, respectively. The allowance for unfunded credit commitments is included in Accrued expenses and other liabilities on the Consolidated Balance Sheet. The Company continues to experience minimal losses from the single-family and multifamily residential loan portfolios sold or securitized with recourse.

Litigation — The Company is a party to various legal actions arising in the ordinary course of its business. In accordance with ASC 450, Contingencies, the Company accrues reserves for outstanding lawsuits, claims and proceedings when a loss contingency is probable and can be reasonably estimated. The Company estimates the amount of loss contingencies using current available information from legal proceedings, advice from legal counsel and available insurance coverage. Due to the inherent subjectivity of the assessments and unpredictability of the outcomes of the legal proceedings, any amounts accrued or included in this aggregate amount may not represent the ultimate loss to the Company from the legal proceedings in question. Thus, the Company’s exposure and ultimate losses may be higher, and possibly significantly more, than the amounts accrued.

While it is impossible to ascertain the ultimate resolution or range of financial liability, based on information known to the Company as of September 30, 2023, the Company does not believe there is any pending legal proceeding to which the Company is a party that, individually or in the aggregate, would reasonably be expected to have a material adverse effect on the Company’s financial condition. In light of the inherent uncertainty in legal proceedings, however, there can be no assurance that the ultimate resolution will not exceed established reserves and it is possible that the outcome of a particular matter, or a combination of matters, may be material to the Company’s financial condition for a particular period, depending upon the size of the loss and the Company’s income for that particular period.

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Stock Compensation Plans

9 Months Ended

Sep. 30, 2023

Share-Based Payment Arrangement [Abstract]

Stock Compensation Plans

Stock Compensation Plans

Pursuant to the Company’s 2021 Stock Incentive Plan, as amended, the Company may issue stock, stock options, restricted stock, restricted stock units (“RSUs”) including performance-based RSUs, stock purchase warrants, stock appreciation rights, phantom stock and dividend equivalents to eligible employees, non-employee directors, consultants, and other service providers of the Company and its subsidiaries. The Company has granted RSUs as its primary incentive awards. There were no outstanding awards other than RSUs as of both September 30, 2023 and December 31, 2022.

The following table presents a summary of the total share-based compensation expense and the related net tax (deficiencies) benefits associated with the Company’s various employee share-based compensation plans for the three and nine months ended September 30, 2023 and 2022:

	Three Months Ended September 30,				Nine Months Ended September 30,
($ in thousands)	2023		2022		2023		2022
Stock compensation costs	$	9,495	$	12,329	$	29,934	$	29,338
Related net tax (deficiencies) benefits for stock compensation plans	$	(18)	$	1	$	8,797	$	5,269

Restricted Stock Units — RSUs are granted under the Company’s long-term incentive plan at no cost to the recipient. RSUs generally cliff vest after three years of continued employment from the date of the grant, and are authorized to settle in shares of the Company’s common stock. Dividends are accrued during the vesting period and paid at the time of vesting. While a portion of RSUs are time-based vesting awards, others vest subject to the attainment of specified performance goals, referred to as “performance-based RSUs.” Performance-based RSUs are granted annually upon approval by the Company’s Compensation Committee based on the performance in the year prior to the grant date of the award. The number of awards that vest can range from zero percent to a maximum of 200% of the granted number of awards based on the Company’s achievement of specified performance criteria over a performance period of three years. For information on accounting on stock-based compensation plans, see Note 1 — Summary of Significant Accounting Policies — Significant Accounting Policies — Stock-Based Compensation to the Consolidated Financial Statements of the Company’s 2022 Form 10-K.

The following table presents a summary of the activities for the Company’s time-based and performance-based RSUs that will be settled in shares for the nine months ended September 30, 2023. The number of performance-based RSUs stated below reflects the number of awards granted on the grant date.

	Time-Based RSUs			Performance-Based RSUs
	Shares	Weighted-Average Grant Date Fair Value		Shares	Weighted-Average Grant Date Fair Value
Outstanding, January 1, 2023	1,296,866	$	60.77	332,510	$	60.40
Granted	500,180	73.73		96,271	57.50
Vested	(522,029)	40.79		(152,558)	39.39
Forfeited	(53,379)	74.00		—	—
Outstanding, September 30, 2023	1,221,638	$	74.04	276,223	$	70.99

As of September 30, 2023, there were $32.2 million of unrecognized compensation costs related to unvested time-based RSUs expected to be recognized over a weighted-average period of 1.9 years, and $17.9 million of unrecognized compensation costs related to unvested performance-based RSUs expected to be recognized over a weighted-average period of 1.9 years.

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Stockholders' Equity and Earnings Per Share

9 Months Ended

Sep. 30, 2023

Stockholders' Equity and Earnings Per Share [Abstract]

Stockholders' Equity and Earnings Per Share

Stockholders’ Equity and Earnings Per Share

The following table presents the basic and diluted EPS calculations for the three and nine months ended September 30, 2023 and 2022. For more information on the calculation of EPS, see Note 1 — Summary of Significant Accounting Policies — Significant Accounting Policies — Earnings Per Share to the Consolidated Financial Statements in the Company’s 2022 Form 10-K.

($ and shares in thousands, except per share data)	Three Months Ended September 30,				Nine Months Ended September 30,
	2023		2022		2023		2022
Basic:
Net income	$	287,738	$	295,339	$	922,208	$	791,320
Weighted-average number of shares outstanding	141,485		140,917		141,356		141,453
Basic EPS	$	2.03	$	2.10	$	6.52	$	5.59
Diluted:
Net income	$	287,738	$	295,339	$	922,208	$	791,320
Weighted-average number of shares outstanding	141,485		140,917		141,356		141,453
Add: Dilutive impact of unvested RSUs	637		1,094		688		1,148
Diluted weighted-average number of shares outstanding	142,122		142,011		142,044		142,601
Diluted EPS	$	2.02	$	2.08	$	6.49	$	5.55

For the three and nine months ended September 30, 2023, approximately 575 thousand and 350 thousand weighted-average shares of anti-dilutive RSUs, respectively, were excluded from the diluted EPS computations. In comparison, approximately 61 thousand and 58 thousand weighted-average shares of anti-dilutive RSUs were excluded from the diluted EPS computations for the three and nine months ended September 30, 2022, respectively.

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Accumulated Other Comprehensive Income (Loss)

9 Months Ended

Sep. 30, 2023

Equity [Abstract]

Accumulated Other Comprehensive Income (Loss)

Accumulated Other Comprehensive Income (Loss)

The following tables present the changes in the components of AOCI balances for the three and nine months ended September 30, 2023 and 2022:

($ in thousands)	Debt Securities (1)		Cash Flow Hedges		Foreign Currency Translation Adjustments (2)		Total
Balance, July 1, 2022	$	(554,781)	$	(30,846)	$	(15,021)	$	(600,648)
Net unrealized losses arising during the period	(161,445)		(34,423)		(7,926)		(203,794)
Amounts reclassified from AOCI	3,256		1,154		—		4,410
Changes, net of tax	(158,189)		(33,269)		(7,926)		(199,384)
Balance, September 30, 2022	$	(712,970)	$	(64,115)	$	(22,947)	$	(800,032)
Balance, July 1, 2023	$	(681,536)	$	(74,805)	$	(25,591)	$	(781,932)
Net unrealized (losses) gains arising during the period	(72,691)		(44,347)		3,710		(113,328)
Amounts reclassified from AOCI	2,870		17,013		—		19,883
Changes, net of tax	(69,821)		(27,334)		3,710		(93,445)
Balance, September 30, 2023	$	(751,357)	$	(102,139)	$	(21,881)	$	(875,377)

($ in thousands)	Debt Securities (1)		Cash Flow Hedges		Foreign Currency Translation Adjustments (2)		Total
Balance, January 1, 2022	$	(85,703)	$	257	$	(4,935)	$	(90,381)
Net unrealized losses arising during the period	(635,664)		(63,232)		(18,012)		(716,908)
Amounts reclassified from AOCI	8,397		(1,140)		—		7,257
Changes, net of tax	(627,267)		(64,372)		(18,012)		(709,651)
Balance, September 30, 2022	$	(712,970)	$	(64,115)	$	(22,947)	$	(800,032)
Balance, January 1, 2023	$	(694,815)	$	(49,531)	$	(21,283)	$	(765,629)
Net unrealized losses arising during the period	(72,034)		(91,468)		(598)		(164,100)
Amounts reclassified from AOCI	15,492		38,860		—		54,352
Changes, net of tax	(56,542)		(52,608)		(598)		(109,748)
Balance, September 30, 2023	$	(751,357)	$	(102,139)	$	(21,881)	$	(875,377)

(1)Includes after-tax unamortized losses related to AFS debt securities that were transferred to HTM in 2022.

(2)Represents foreign currency translation adjustments related to the Company’s net investment in non-U.S. operations, including related hedges. The functional currency and reporting currency of the Company’s foreign subsidiary is RMB and USD, respectively.

The following tables present the components of other comprehensive income (loss), reclassifications to net income and the related tax effects for the three and nine months ended September 30, 2023 and 2022:

	Three Months Ended September 30,
	2023						2022
($ in thousands)	Before-Tax		Tax Effect		Net-of-Tax		Before-Tax		Tax Effect		Net-of-Tax
Debt securities:
Net unrealized losses on AFS debt securities arising during the period	$	(103,183)	$	30,492	$	(72,691)	$	(229,246)	$	67,801	$	(161,445)
Reclassification adjustments:
Amortization of unrealized losses on transferred debt securities (1)	4,075		(1,205)		2,870		4,623		(1,367)		3,256
Net change	(99,108)		29,287		(69,821)		(224,623)		66,434		(158,189)
Cash flow hedges:
Net unrealized losses arising during the period	(62,715)		18,368		(44,347)		(48,325)		13,902		(34,423)
Net realized losses reclassified into net income (2)	24,059		(7,046)		17,013		1,619		(465)		1,154
Net change	(38,656)		11,322		(27,334)		(46,706)		13,437		(33,269)
Foreign currency translation adjustments, net of hedges:
Net unrealized gains (losses) arising during the period	3,728		(18)		3,710		(6,676)		(1,250)		(7,926)
Net change	3,728		(18)		3,710		(6,676)		(1,250)		(7,926)
Other comprehensive loss	$	(134,036)	$	40,591	$	(93,445)	$	(278,005)	$	78,621	$	(199,384)

	Nine Months Ended September 30,
	2023							2022
($ in thousands)	Before-Tax			Tax Effect		Net-of-Tax		Before-Tax		Tax Effect		Net-of-Tax
Debt securities:
Net unrealized losses on AFS debt securities arising during the period	$	(102,262)		$	30,228	$	(72,034)	$	(742,132)	$	219,459	$	(522,673)
Unrealized losses on debt securities transferred from AFS to HTM	—			—		—		(160,416)		47,425		(112,991)
Reclassification adjustments:
Net realized losses (gains) on AFS debt securities reclassified into net income (3)	10,000		(4)	(2,956)		7,044		(1,306)		386		(920)
Amortization of unrealized losses on transferred debt securities (1)	11,994			(3,546)		8,448		13,228		(3,911)		9,317
Net change	(80,268)			23,726		(56,542)		(890,626)		263,359		(627,267)
Cash flow hedges:
Net unrealized losses arising during the period	(129,329)			37,861		(91,468)		(88,771)		25,539		(63,232)
Net realized losses (gains) reclassified into net income (2)	54,955			(16,095)		38,860		(1,601)		461		(1,140)
Net change	(74,374)			21,766		(52,608)		(90,372)		26,000		(64,372)
Foreign currency translation adjustments, net of hedges:
Net unrealized gains (losses) arising during the period	247			(845)		(598)		(16,276)		(1,736)		(18,012)
Net change	247			(845)		(598)		(16,276)		(1,736)		(18,012)
Other comprehensive loss	$	(154,395)		$	44,647	$	(109,748)	$	(997,274)	$	287,623	$	(709,651)

(1)Represents unrealized losses amortized over the remaining lives of securities that were transferred from the AFS to HTM portfolio in 2022.

(2)Pre-tax amounts related to cash flow hedges on variable rate loans and long-term borrowings, where applicable, were reported in Interest and dividend income and in Interest expense, respectively, on the Consolidated Statement of Income.

(3)Pre-tax amounts were reported in Net (losses) gains on AFS debt securities on the Consolidated Statement of Income.

(4)Represents the full write-off of an impaired subordinated debt security during the first quarter of 2023.

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Business Segments

9 Months Ended

Sep. 30, 2023

Segment Reporting [Abstract]

Business Segments

Business Segments

The Company organizes its operations into three reportable operating segments: (1) Consumer and Business Banking; (2) Commercial Banking; and (3) Other. These segments are defined by the type of customers served and the related products and services provided. The segments reflect how financial information is currently evaluated by management. Operating segment results are based on the Company’s internal management reporting process, which reflects assignments and allocations of certain balance sheet and income statement items. The information presented is not indicative of how the segments would perform if they operated as independent entities.

The Consumer and Business Banking segment primarily provides financial products and services to consumer and commercial customers through the Company’s domestic branch network and digital banking platform. This segment offers consumer and commercial deposits, mortgage and home equity loans, and other products and services. It also originates commercial loans for small- and medium-sized enterprises through the Company’s branch network. Other products and services provided by this segment include wealth management, treasury management, interest rate risk hedging and foreign exchange services.

The Commercial Banking segment primarily generates commercial loan and deposit products. Commercial loan products include CRE lending, construction financing, commercial business lending, working capital lines of credit, trade finance, letters of credit, affordable housing lending, asset-based lending, asset-backed finance, project finance and equipment financing. Commercial deposit products and other financial services include treasury management, foreign exchange services and interest rate and commodity risk hedging.

The remaining centralized functions, including the corporate treasury activities of the Company and eliminations of inter-segment amounts, have been aggregated and included in the Other segment, which provides broad administrative support to the two core segments, namely the Consumer and Business Banking and the Commercial Banking segments.

The Company utilizes an internal reporting process to measure the performance of the three operating segments within the Company. The internal reporting process derives operating segment results by utilizing allocation methodologies for revenues and expenses. Net interest income of each segment represents the difference between actual interest earned on assets and interest incurred on liabilities of the segment, adjusted for funding charges or credits through the Company’s internal funds transfer pricing (“FTP”) process. Noninterest income and noninterest expense directly attributable to a business segment are assigned to that segment. Indirect costs, including technology-related costs and corporate overhead, are allocated based on a segment’s estimated usage using factors including but not limited to, full-time equivalent employees, net interest income, and loan and deposit volume. Charge-offs are recorded to the segment directly associated with the respective loans charged off, and provision for credit losses is recorded to the segments based on the related loans for which allowances are evaluated. The Company’s internal reporting process utilizes a full-allocation methodology. Under this methodology, corporate and indirect expenses incurred by the Other segment are allocated to the Consumer and Business Banking and the Commercial Banking segments, except certain corporate treasury-related expenses and insignificant unallocated expenses.

The corporate treasury function within the Other segment is responsible for the Company’s liquidity and interest rate management and the internal FTP process. The FTP process is formulated with the goal of encouraging loan and deposit growth that is consistent with the Company’s overall profitability objectives, as well as providing a reasonable and consistent basis for the measurement of its business segments’ net interest margins and profitability. The FTP process charges a cost to fund loans (“FTP charges for loans”) and allocates credits for funds provided from deposits (“FTP credits for deposits”) using internal FTP rates. FTP charges for loans are determined based on a matched cost of funds, which is tied to the pricing and term characteristics of the loans. FTP credits for deposits are based on matched funding credit rates, which are tied to the implied or stated maturity of the deposits. FTP credits for deposits reflect the long-term value generated by the deposits. The net spread between the total internal FTP charges and credits is recorded as part of net interest income in the Other segment. The FTP process transfers the corporate interest rate risk exposure to the treasury function within the Other segment, where such exposures are centrally managed. The Company’s internal FTP assumptions and methodologies are reviewed at least annually to ensure that the process is reflective of current market conditions.

The following tables present the operating results and other key financial measures for the individual operating segments as of and for the three and nine months ended September 30, 2023 and 2022:

($ in thousands)	Consumer and Business Banking		Commercial Banking		Other		Total
Three Months Ended September 30, 2023
Net interest income before provision for credit losses	$	315,409	$	242,345	$	13,059	$	570,813
Provision for credit losses	1,633		40,367		—		42,000
Noninterest income	25,132		43,672		7,948		76,752
Noninterest expense	106,626		87,556		57,832		252,014
Segment income (loss) before income taxes	232,282		158,094		(36,825)		353,551
Segment net income	$	164,051	$	110,182	$	13,505	$	287,738
As of September 30, 2023
Segment assets	$	18,935,452	$	34,438,787	$	14,915,219	$	68,289,458

($ in thousands)	Consumer and Business Banking		Commercial Banking		Other		Total
Three Months Ended September 30, 2022
Net interest income before provision for credit losses	$	326,411	$	222,996	$	2,402	$	551,809
Provision for credit losses	8,974		18,026		—		27,000
Noninterest income (loss)	30,819		48,641		(3,908)		75,552
Noninterest expense	104,005		81,386		30,582		215,973
Segment income (loss) before income taxes	244,251		172,225		(32,088)		384,388
Segment net income (loss)	$	173,982	$	122,869	$	(1,512)	$	295,339
As of September 30, 2022
Segment assets	$	17,002,000	$	32,836,381	$	12,737,680	$	62,576,061

($ in thousands)	Consumer and Business Banking		Commercial Banking		Other		Total
Nine Months Ended September 30, 2023
Net interest income before provision for credit losses	$	927,173	$	742,108	$	68,139	$	1,737,420
Provision for credit losses	22,169		65,831		—		88,000
Noninterest income	78,254		129,809		7,298		215,361
Noninterest expense	327,476		263,137		141,637		732,250
Segment income (loss) before income taxes	655,782		542,949		(66,200)		1,132,531
Segment net income	$	463,151	$	383,669	$	75,388	$	922,208
As of September 30, 2023
Segment assets	$	18,935,452	$	34,438,787	$	14,915,219	$	68,289,458

($ in thousands)	Consumer and Business Banking		Commercial Banking		Other		Total
Nine Months Ended September 30, 2022
Net interest income (loss) before provision for credit losses	$	823,998	$	662,037	$	(45,661)	$	1,440,374
Provision for credit losses	14,976		33,524		—		48,500
Noninterest income	84,402		145,750		3,587		233,739
Noninterest expense	294,395		235,804		72,084		602,283
Segment income (loss) before income taxes	599,029		538,459		(114,158)		1,023,330
Segment net income (loss)	$	426,695	$	384,237	$	(19,612)	$	791,320
As of September 30, 2022
Segment assets	$	17,002,000	$	32,836,381	$	12,737,680	$	62,576,061

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Pay vs Performance Disclosure - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Pay vs Performance Disclosure
Net income	$ 287,738	$ 295,339	$ 922,208	$ 791,320

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Insider Trading Arrangements	3 Months Ended
	Sep. 30, 2023
Trading Arrangements, by Individual
Rule 10b5-1 Arrangement Adopted	false
Non-Rule 10b5-1 Arrangement Adopted	false
Rule 10b5-1 Arrangement Terminated	false
Non-Rule 10b5-1 Arrangement Terminated	false

XML

Current Accounting Developments and Summary of Significant Accounting Policies (Policies)

9 Months Ended

Sep. 30, 2023

Accounting Policies [Abstract]

Consolidation

East West Bancorp, Inc. is a registered bank holding company that offers a full range of banking services to individuals and businesses through its subsidiary bank, East West Bank and its subsidiaries (“East West Bank” or the “Bank”). The unaudited interim Consolidated Financial Statements in this Form 10-Q include the accounts of East West, East West Bank and East West’s subsidiaries. Intercompany transactions and accounts have been eliminated in consolidation. As of September 30, 2023, East West also has six wholly-owned subsidiaries that are statutory business trusts (the “Trusts”). In accordance with FASB Accounting Standards Codification (“ASC”) Topic 810, Consolidation, the Trusts are not included on the Consolidated Financial Statements.

Basis of Presentation

The unaudited interim Consolidated Financial Statements are presented in accordance with U.S. Generally Accepted Accounting Principles (“GAAP”), applicable guidelines prescribed by regulatory authorities and general practices in the banking industry. While the unaudited interim Consolidated Financial Statements reflect all adjustments that, in the opinion of management, are necessary for fair presentation, they primarily serve to update the most recently filed annual report on Form 10-K, and may not include all the information and notes necessary to constitute a complete set of financial statements. Accordingly, they should be read in conjunction with the audited Consolidated Financial Statements and notes thereto included in the Company’s 2022 Form 10-K.

Recent Accounting Pronouncements

Accounting Pronouncements Adopted in 2023

Standard	Required Date of Adoption	Description	Effect on Financial Statements
ASU 2022-02, Financial Instruments —Credit Losses (Topic 326): Troubled Debt Restructurings and the Vintage Disclosures	January 1, 2023 Early adoption is permitted	ASU 2022-02 eliminates the •accounting guidance for troubled debt restructurings (“TDR”), and requires the Company to apply the loan refinancing and restructuring guidance to determine whether a modification made to a loan results in a new loan or a continuation of an existing loan; and •requirement to use a discounted cash flow method to measure receivables. The guidance also requires •enhanced disclosures for certain loan refinancings and restructurings by creditors when the borrower is experiencing financial difficulty; and •vintage disclosures of current period gross charge-offs (on a current year-to-date basis) by year of loan origination for financing receivables and net investments in leases within the scope of ASC 326-20: Financial Instruments — Credit Losses — Measured at Amortized Cost.	The Company adopted ASU 2022-02 on January 1, 2023 on a prospective basis, except for the guidance related to the elimination of TDR recognition and measurement, which was adopted on a modified retrospective approach. This adoption increased the allowance for loan losses on TDRs as of December 31, 2022 by $6.0 million and decreased opening retained earnings on January 1, 2023 by $4.3 million after-tax. Disclosures as of September 30, 2023 are presented in accordance with this guidance while prior year amounts are reported in accordance with previously applicable GAAP.

Recent Accounting Pronouncements Yet to be Adopted

Standard	Required Date of Adoption	Description	Effect on Financial Statements
Standards Not Yet Adopted
ASU 2023-01, Leases (Topic 842): Common Control Arrangements	January 1, 2024 Early adoption is permitted	ASU 2023-01 amends the accounting for leasehold improvements for leases between entities under common control arrangements. The guidance requires leasehold improvements associated with leases between companies under common control to be amortized by a lessee over the economic life of the leasehold improvements, regardless of the lease term or, until the lessee ceases to control the use of the underlying asset through a lease, at which time the remaining value of the leasehold improvement would be accounted for as a transfer between companies under common control through an adjustment to equity. The amendments in this guidance may be applied retrospectively to the beginning of the period in which the entity first applied Topic 842 or prospectively (1) to all new leasehold improvements recognized on or after the date the entity first applies the amendments, or (2) to all new and existing leasehold improvements recognized on or after the date the entity first applies the amendments.	The Company does not expect the adoption of this guidance to have a material impact on the Company’s Consolidated Financial Statements. The Company expects to adopt ASU 2023-01 on January 1, 2024 on a prospective basis.
ASU 2023-02, Investments — Equity Method and Joint Ventures (Topic 323): Accounting for Investments in Tax Credit Structures Using the Proportional Amortization Method	January 1, 2024 Early adoption is permitted	ASU 2023-02 expands the scope of the proportional amortization method to equity tax credit investment programs if certain conditions are met. Previously, the proportional amortization method could only be used for investments in low-income housing tax credit structures. Under this guidance, companies are able to elect, on a tax credit program-by-tax credit program basis, to apply the proportional amortization method to all equity investments meeting the criteria in ASC 323-740-25-1. The amendments in this guidance must be applied on a modified retrospective or a retrospective basis.	The Company is currently evaluating the impact of this guidance on the Company’s Consolidated Financial Statements.
ASU 2023-05, Business Combinations — Joint Venture Formations (Subtopic 805-60): Recognition and Initial Measurement	January 1, 2025 Early adoption is permitted	ASU 2023-05 requires a joint venture to recognize and initially measure assets contributed to the joint venture in a formation transaction to be measured at fair value. Under this guidance, the initial formation of the joint venture would trigger a new basis of accounting and recognize contributed net assets generally at fair value as of the joint venture’s formation date. The excess of the fair value of the joint venture’s outstanding equity interests over the fair value of its identifiable assets and liabilities is recognized as goodwill, regardless of whether the joint venture meets the definition of a business in its stand-alone financial statements, and measure its contributed total net assets upon formation as the fair value of the joint venture as a whole, which would equal the fair value of 100% of the joint venture’s outstanding equity interests. The guidance also allows a joint venture to apply the measurement period guidance, which is largely consistent with the acquisition method for business combination in ASC 805-10. The guidance also introduces new disclosure requirements related to the nature and financial effect of the joint venture. The amendments in this guidance are effective prospectively for all joint venture formations with a formation date on or after January 1, 2025. Additionally, joint ventures that were formed before January 1, 2025 may elect to apply the amendments retrospectively if sufficient information exists.	The Company does not expect the adoption of this guidance to have a material impact on the Company’s Consolidated Financial Statements. The Company expects to adopt ASU 2023-05 on January 1, 2025.

Loan Modifications

Loan Modifications — Certain loans are modified in the normal course of business for competitive reasons or in conjunction with the Company’s loss mitigation activities. Upon the adoption of ASU 2022-02, the Company applies the general loan modification guidance provided in ASC 310-20 to all loan modifications, including modifications made to borrowers experiencing financial difficulty. Under the general loan modification guidance, a modification is treated as a new loan only if the following two conditions are met: (1) the terms of the new loan are at least as favorable to the Company as the terms for comparable loans to other customers with similar collection risks; and (2) modifications to the terms of the original loan are more than minor. If either condition is not met, the modification is accounted for as a continuation of the existing loan with any effect of the modification treated as a prospective adjustment to the loan’s effective interest rate. A modification made to borrowers experiencing financial difficulty may vary by program and by borrower-specific characteristics, and may include rate reductions, principal forgiveness, term extensions, and payment delays, and is intended to minimize the Company’s economic loss and to avoid foreclosure or repossession of collateral. The Company applies the same credit loss methodology it uses for similar loans that were not modified.

Balance Sheet Offsetting

The Company’s resale and repurchase agreements are transacted under legally enforceable master repurchase agreements that, in the event of default by the counterparty, provide the Company the right to liquidate securities held and to offset receivables and payables with the same counterparty. The Company nets resale and repurchase transactions with the same counterparty on the Consolidated Balance Sheet when it has a legally enforceable master netting agreement and the transactions are eligible for netting under ASC 210-20-45-11, Balance Sheet Offsetting Repurchase and Reverse Repurchase Agreements. Collateral received includes securities and loans that are not recognized on the Consolidated Balance Sheet. Collateral pledged consists of securities that are not netted on the Consolidated Balance Sheet against the related collateralized liability.

Variable Interest Entities

Variable Interest EntitiesThe majority of both the investments in affordable housing partnerships and tax credit and other investments discussed above are variable interest entities where the Company is a limited partner in these partnerships, and an unrelated third party is typically the general partner or managing member who has control over the significant activities of these investments. While the Company’s interest in some of the investments may exceed 50% of the outstanding equity interests, the Company does not consolidate these investments due to the general partner’s or managing member’s ability to manage the entity, which is indicative of the general partner’s or managing member’s power over the entity. The Company’s maximum exposure to loss in connection with these partnerships consists of the unamortized investment balance and any tax credits claimed that may become subject to recapture.

Goodwill

The Company’s goodwill impairment test is performed annually, as of December 31, or more frequently as events occur or circumstances change that would more-likely-than-not reduce the fair value of a reporting unit below its carrying value.

Litigation

Litigation — The Company is a party to various legal actions arising in the ordinary course of its business. In accordance with ASC 450, Contingencies, the Company accrues reserves for outstanding lawsuits, claims and proceedings when a loss contingency is probable and can be reasonably estimated. The Company estimates the amount of loss contingencies using current available information from legal proceedings, advice from legal counsel and available insurance coverage. Due to the inherent subjectivity of the assessments and unpredictability of the outcomes of the legal proceedings, any amounts accrued or included in this aggregate amount may not represent the ultimate loss to the Company from the legal proceedings in question.

Credit Quality Indicators

Credit Quality Indicators

All loans are subject to the Company’s credit review and monitoring process. For the commercial loan portfolio, loans are risk rated based on an analysis of the borrower’s current payment performance or delinquency, repayment sources, financial and liquidity factors, including industry and geographic considerations. For the consumer loan portfolio, payment performance or delinquency is typically the driving indicator for risk ratings.

The Company utilizes internal credit risk ratings to assign each individual loan a risk rating of 1 through 10:

•Pass — loans risk rated 1 through 5 are assigned an internal risk rating category of “Pass.” Loans risk rated 1 are typically loans fully secured by cash. Pass loans have sufficient sources of repayment to repay the loan in full, in accordance with all terms and conditions.

•Special mention — loans assigned a risk rating of 6 have potential weaknesses that warrant closer attention by management; these are assigned an internal risk rating category of “Special Mention.”

•Substandard — loans assigned a risk rating of 7 or 8 have well-defined weaknesses that may jeopardize the full and timely repayment of the loan; these are assigned an internal risk rating category of “Substandard.”

•Doubtful — loans assigned a risk rating of 9 have insufficient sources of repayment and a high probability of loss; these are assigned an internal risk rating category of “Doubtful.”

•Loss — loans assigned a risk rating of 10 are uncollectible and of such little value that they are no longer considered bankable assets; these are assigned an internal risk rating category of “Loss.”

Loan exposures categorized as criticized consist of special mention, substandard, doubtful and loss categories. The Company reviews the internal risk ratings of its loan portfolio on a regular basis, and adjusts the ratings based on changes in the borrowers’ financial status and the collectability of the loans.

Allowance for Credit Losses

Allowance for Credit Losses

The Company has a current expected credit losses framework for all financial assets measured at amortized cost and certain off-balance sheet credit exposures. The Company’s allowance for credit losses, which includes both the allowance for loan losses and the allowance for unfunded credit commitments, is calculated with the objective of maintaining a reserve sufficient to absorb losses inherent in our credit portfolios. The measurement of the allowance for credit losses is based on management’s best estimate of lifetime expected credit losses, and periodic evaluation of the loan portfolio, lending-related commitments, and other relevant factors.

The allowance for credit losses is deducted from the amortized cost basis of a financial asset or a group of financial assets so that the balance sheet reflects the net amount the Company expects to collect. Amortized cost is the principal balance outstanding, net of purchase premiums and discounts, deferred fees and costs, and escrow advances. Subsequent changes in expected credit losses are recognized in net income as a provision for, or a reversal of, credit loss expense.

The allowance for credit losses estimation involves procedures to consider the unique risk characteristics of the portfolio segments. The majority of the Company’s credit exposures that share risk characteristics with other similar exposures are collectively evaluated. The collectively evaluated loans include performing loans and unfunded credit commitments. If an exposure does not share risk characteristics with other exposures, the Company generally estimates expected credit losses on an individual basis.

Allowance for Collectively Evaluated Loans

The allowance for collectively evaluated loans consists of a quantitative component that assesses the different risk factors considered in our models and a qualitative component that considers risk factors external to the models. Each of these components are described below.

Quantitative Component — The Company applies quantitative methods to estimate loan losses by considering a variety of factors such as historical loss experience, the current credit quality of the portfolio, and an economic outlook over the life of the loan. The Company incorporates forward-looking information using macroeconomic scenarios, which include variables that are considered key drivers of increases and decreases in credit losses. The Company utilizes a probability-weighted, multiple-scenario forecast approach. These scenarios may consist of a base forecast representing management's view of the most likely outcome, combined with downside or upside scenarios reflecting possible worsening or improving economic conditions. The quantitative models incorporate a probability-weighted calculation of these macroeconomic scenarios over a reasonable and supportable forecast period. If the life of the loans extends beyond the reasonable and supportable forecast period, the Company will consider historical experience or long-run macroeconomic trends over the remaining life of the loans to estimate the allowance for loan losses.

There were no changes to the reasonable and supportable forecast period, except to the C&I segment, and no changes to the reversion to the historical loss experience method for the three and nine months ended September 30, 2023 and 2022. The reasonable and supportable forecast period for the C&I segment changed from 11 quarters to eight quarters due to model redevelopment during the third quarter of 2023.

The following table provides key credit risk characteristics and macroeconomic variables that the Company uses to estimate the expected credit losses by portfolio segment:

Portfolio Segment	Risk Characteristics	Macroeconomic Variables
C&I	Age percentage, size at origination, delinquency status, sector and risk rating	Unemployment rate, Gross Domestic Product (“GDP”), and Two-Ten treasury spread (1)
CRE, Multifamily residential, and Construction and land	Delinquency status, maturity date, collateral value, property type, and geographic location	Unemployment rate, GDP, and U.S. Treasury rates
Single-family residential and HELOCs	FICO score, delinquency status, maturity date, collateral value, and geographic location	Unemployment rate, GDP, and home price index
Other consumer	Loss rate approach	Immaterial (2)

(1)Macroeconomic variables were updated due to model redevelopment.

(2)Macroeconomic variables are included in the qualitative estimate.

Quantitative Component — Allowance for Loan Losses for the Commercial Loan Portfolio

The Company’s C&I lifetime loss rate model estimates the loss rate expected over the life of a loan. This loss rate is applied to the amortized cost basis, excluding accrued interest receivable, to determine expected credit losses. The lifetime loss rate model’s reasonable and supportable period spans eight quarters, thereafter, immediately reverting to the historical average loss rate, expressed through the loan-level lifetime loss rate.

To generate estimates of expected loss at the loan level for CRE, multifamily residential, and construction and land loans, projected probabilities of default (“PDs”) and loss given defaults (“LGDs”) are applied to the estimated exposure at default, considering the term and payment structure of the loan. The forecast of future economic conditions returns to long-run historical economic trends within the reasonable and supportable period.

To estimate the life of a loan under both models, the contractual term of the loan is adjusted for estimated prepayments based on historical prepayment experience.

Quantitative Component — Allowance for Loan Losses for the Consumer Loan Portfolio

For single-family residential and HELOC loans, projected PDs and LGDs are applied to the estimated exposure at default, considering the term and payment structure of the loan, to generate estimates of expected loss at the loan level. The forecast of future economic conditions returns to long-run historical economic trends after the reasonable and supportable period. To estimate the life of a loan for the single-family residential and HELOC loan portfolios, the contractual term of the loan is adjusted for estimated prepayments based on historical prepayment experience. For other consumer loans, the Company uses a loss rate approach.

Qualitative Component — The Company also considers the following qualitative factors in the determination of the collectively evaluated allowance if these factors have not already been captured by the quantitative model. Such qualitative factors may include, but are not limited to:

—     loan growth trends;

—    the volume and severity of past due financial assets, and the volume and severity of adversely classified financial assets;

—    the Company’s lending policies and procedures, including changes in lending strategies, underwriting standards, collection, write-off, and recovery practices;

—    knowledge of a borrower’s operations;

—    the quality of the Company’s credit review system;

—    the experience, ability and depth of the Company’s management and associates;

—    the effect of other external factors such as the regulatory and legal environments, or changes in technology;

—    actual and expected changes in international, national, regional, and local economic and business conditions in which the Company operates; and

—    risk factors in certain industry sectors not captured by the quantitative models.

The magnitude of the impact of these factors on the Company’s qualitative assessment of the allowance for credit losses changes from period to period according to changes made by management in its assessment of these factors. The extent to which these factors change may be dependent on whether they are already reflected in quantitative loss estimates during the current period and the extent to which changes in these factors diverge from period to period.

While the Company’s allowance methodologies strive to reflect all relevant credit risk factors, there continues to be uncertainty associated with, but not limited to, potential imprecision in the estimation process due to the inherent time lag of obtaining information and normal variations between expected and actual outcomes. The Company may hold additional qualitative reserves that are designed to provide coverage for losses attributable to such risk.

Allowance for Individually Evaluated Loans

When a loan no longer shares similar risk characteristics with other loans, such as in the case of certain nonaccrual loans, the Company estimates the allowance for loan losses on an individual loan basis. The allowance for loan losses for individually evaluated loans is measured as the difference between the recorded value of the loans and their fair value. For loans evaluated individually, the Company uses one of three different asset valuation measurement methods: (1) the fair value of collateral less costs to sell; (2) the present value of expected future cash flows; or (3) the loan's observable market price. If an individually evaluated loan is determined to be collateral dependent, the Company applies the fair value of the collateral less costs to sell method. If an individually evaluated loan is determined not to be collateral dependent, the Company uses the present value of future cash flows or the observable market value of the loan.

•Collateral-Dependent Loans — The allowance of a collateral-dependent loan is limited to the difference between the recorded value and fair value of the collateral less cost of disposal or sale.

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Current Accounting Developments and Summary of Significant Accounting Policies (Tables)

9 Months Ended

Sep. 30, 2023

Accounting Policies [Abstract]

Schedule of New Accounting Pronouncements Adopted and Recent Accounting Pronouncements

Accounting Pronouncements Adopted in 2023

Standard	Required Date of Adoption	Description	Effect on Financial Statements
ASU 2022-02, Financial Instruments —Credit Losses (Topic 326): Troubled Debt Restructurings and the Vintage Disclosures	January 1, 2023 Early adoption is permitted	ASU 2022-02 eliminates the •accounting guidance for troubled debt restructurings (“TDR”), and requires the Company to apply the loan refinancing and restructuring guidance to determine whether a modification made to a loan results in a new loan or a continuation of an existing loan; and •requirement to use a discounted cash flow method to measure receivables. The guidance also requires •enhanced disclosures for certain loan refinancings and restructurings by creditors when the borrower is experiencing financial difficulty; and •vintage disclosures of current period gross charge-offs (on a current year-to-date basis) by year of loan origination for financing receivables and net investments in leases within the scope of ASC 326-20: Financial Instruments — Credit Losses — Measured at Amortized Cost.	The Company adopted ASU 2022-02 on January 1, 2023 on a prospective basis, except for the guidance related to the elimination of TDR recognition and measurement, which was adopted on a modified retrospective approach. This adoption increased the allowance for loan losses on TDRs as of December 31, 2022 by $6.0 million and decreased opening retained earnings on January 1, 2023 by $4.3 million after-tax. Disclosures as of September 30, 2023 are presented in accordance with this guidance while prior year amounts are reported in accordance with previously applicable GAAP.

Recent Accounting Pronouncements Yet to be Adopted

Standard	Required Date of Adoption	Description	Effect on Financial Statements
Standards Not Yet Adopted
ASU 2023-01, Leases (Topic 842): Common Control Arrangements	January 1, 2024 Early adoption is permitted	ASU 2023-01 amends the accounting for leasehold improvements for leases between entities under common control arrangements. The guidance requires leasehold improvements associated with leases between companies under common control to be amortized by a lessee over the economic life of the leasehold improvements, regardless of the lease term or, until the lessee ceases to control the use of the underlying asset through a lease, at which time the remaining value of the leasehold improvement would be accounted for as a transfer between companies under common control through an adjustment to equity. The amendments in this guidance may be applied retrospectively to the beginning of the period in which the entity first applied Topic 842 or prospectively (1) to all new leasehold improvements recognized on or after the date the entity first applies the amendments, or (2) to all new and existing leasehold improvements recognized on or after the date the entity first applies the amendments.	The Company does not expect the adoption of this guidance to have a material impact on the Company’s Consolidated Financial Statements. The Company expects to adopt ASU 2023-01 on January 1, 2024 on a prospective basis.
ASU 2023-02, Investments — Equity Method and Joint Ventures (Topic 323): Accounting for Investments in Tax Credit Structures Using the Proportional Amortization Method	January 1, 2024 Early adoption is permitted	ASU 2023-02 expands the scope of the proportional amortization method to equity tax credit investment programs if certain conditions are met. Previously, the proportional amortization method could only be used for investments in low-income housing tax credit structures. Under this guidance, companies are able to elect, on a tax credit program-by-tax credit program basis, to apply the proportional amortization method to all equity investments meeting the criteria in ASC 323-740-25-1. The amendments in this guidance must be applied on a modified retrospective or a retrospective basis.	The Company is currently evaluating the impact of this guidance on the Company’s Consolidated Financial Statements.
ASU 2023-05, Business Combinations — Joint Venture Formations (Subtopic 805-60): Recognition and Initial Measurement	January 1, 2025 Early adoption is permitted	ASU 2023-05 requires a joint venture to recognize and initially measure assets contributed to the joint venture in a formation transaction to be measured at fair value. Under this guidance, the initial formation of the joint venture would trigger a new basis of accounting and recognize contributed net assets generally at fair value as of the joint venture’s formation date. The excess of the fair value of the joint venture’s outstanding equity interests over the fair value of its identifiable assets and liabilities is recognized as goodwill, regardless of whether the joint venture meets the definition of a business in its stand-alone financial statements, and measure its contributed total net assets upon formation as the fair value of the joint venture as a whole, which would equal the fair value of 100% of the joint venture’s outstanding equity interests. The guidance also allows a joint venture to apply the measurement period guidance, which is largely consistent with the acquisition method for business combination in ASC 805-10. The guidance also introduces new disclosure requirements related to the nature and financial effect of the joint venture. The amendments in this guidance are effective prospectively for all joint venture formations with a formation date on or after January 1, 2025. Additionally, joint ventures that were formed before January 1, 2025 may elect to apply the amendments retrospectively if sufficient information exists.	The Company does not expect the adoption of this guidance to have a material impact on the Company’s Consolidated Financial Statements. The Company expects to adopt ASU 2023-05 on January 1, 2025.

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Fair Value Measurement and Fair Value of Financial Instruments (Tables)

9 Months Ended

Sep. 30, 2023

Fair Value Disclosures [Abstract]

Schedule Of Financial Assets (Liabilities) Measured At Fair Value On a Recurring Basis

The following tables present financial assets and liabilities that are measured at fair value on a recurring basis as of September 30, 2023 and December 31, 2022:

	Assets and Liabilities Measured at Fair Value on a Recurring Basis as of September 30, 2023
($ in thousands)	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total Fair Value
AFS debt securities:
U.S. Treasury securities	$	904,101	$	—	$	—	$	904,101
U.S. government agency and U.S. government-sponsored enterprise debt securities	—		447,464		—		447,464
U.S. government agency and U.S. government-sponsored enterprise mortgage-backed securities:
Commercial mortgage-backed securities	—		462,332		—		462,332
Residential mortgage-backed securities	—		1,694,342		—		1,694,342
Municipal securities	—		243,556		—		243,556
Non-agency mortgage-backed securities:
Commercial mortgage-backed securities	—		365,320		—		365,320
Residential mortgage-backed securities	—		570,787		—		570,787
Corporate debt securities	—		475,434		—		475,434
Foreign government bonds	—		222,790		—		222,790
Asset-backed securities	—		43,757		—		43,757
Collateralized loan obligations (“CLOs”)	—		609,954		—		609,954
Total AFS debt securities	$	904,101	$	5,135,736	$	—	$	6,039,837
Investments in qualified affordable housing partnerships, tax credit and other investments, net:
Equity securities	$	19,447	$	4,154	$	—	$	23,601
Total investments in qualified affordable housing partnerships, tax credit and other investments, net	$	19,447	$	4,154	$	—	$	23,601
Derivative assets:
Interest rate contracts	$	—	$	624,087	$	—	$	624,087
Foreign exchange contracts	—		100,377		—		100,377
Equity contracts	—		—		352		352
Commodity contracts	—		137,500		—		137,500
Gross derivative assets	$	—	$	861,964	$	352	$	862,316
Netting adjustments (1)	$	—	$	(530,331)	$	—	$	(530,331)
Net derivative assets	$	—	$	331,633	$	352	$	331,985
Derivative liabilities:
Interest rate contracts	$	—	$	712,302	$	—	$	712,302
Foreign exchange contracts	—		77,099		—		77,099
Equity contracts (2)	—		—		15,119		15,119
Credit contracts	—		12		—		12
Commodity contracts	—		143,855		—		143,855
Gross derivative liabilities	$	—	$	933,268	$	15,119	$	948,387
Netting adjustments (1)	$	—	$	(262,873)	$	—	$	(262,873)
Net derivative liabilities	$	—	$	670,395	$	15,119	$	685,514

	Assets and Liabilities Measured at Fair Value on a Recurring Basis as of December 31, 2022
($ in thousands)	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total Fair Value
AFS debt securities:
U.S. Treasury securities	$	606,203	$	—	$	—	$	606,203
U.S. government agency and U.S. government-sponsored enterprise debt securities	—		461,607		—		461,607
U.S. government agency and U.S. government-sponsored enterprise mortgage-backed securities:
Commercial mortgage-backed securities	—		500,269		—		500,269
Residential mortgage-backed securities	—		1,762,195		—		1,762,195
Municipal securities	—		257,099		—		257,099
Non-agency mortgage-backed securities:
Commercial mortgage-backed securities	—		398,329		—		398,329
Residential mortgage-backed securities	—		649,224		—		649,224
Corporate debt securities	—		526,274		—		526,274
Foreign government bonds	—		227,053		—		227,053
Asset-backed securities	—		49,076		—		49,076
CLOs	—		597,664		—		597,664
Total AFS debt securities	$	606,203	$	5,428,790	$	—	$	6,034,993
Investments in qualified affordable housing partnerships, tax credit and other investments, net:
Equity securities	$	19,777	$	4,177	$	—	$	23,954
Total investments in qualified affordable housing partnerships, tax credit and other investments, net	$	19,777	$	4,177	$	—	$	23,954
Derivative assets:
Interest rate contracts	$	—	$	440,283	$	—	$	440,283
Foreign exchange contracts	—		53,109		—		53,109
Equity contracts	—		—		323		323
Commodity contracts	—		261,613		—		261,613
Gross derivative assets	$	—	$	755,005	$	323	$	755,328
Netting adjustments (1)	$	—	$	(614,783)	$	—	$	(614,783)
Net derivative assets	$	—	$	140,222	$	323	$	140,545
Derivative liabilities:
Interest rate contracts	$	—	$	584,516	$	—	$	584,516
Foreign exchange contracts	—		44,117		—		44,117
Credit contracts	—		23		—		23
Commodity contracts	—		258,608		—		258,608
Gross derivative liabilities	$	—	$	887,264	$	—	$	887,264
Netting adjustments (1)	$	—	$	(242,745)	$	—	$	(242,745)
Net derivative liabilities	$	—	$	644,519	$	—	$	644,519

(1)Represents balance sheet netting of derivative assets and liabilities and related cash collateral under master netting agreements or similar agreements. See Note 6 — Derivatives to the Consolidated Financial Statements in this Form 10-Q for additional information.

(2)Equity contracts classified as derivative liabilities consist of PRSUs granted as part of EWBC’s consideration in its investment in Rayliant.

Reconciliation Of The Beginning And Ending Balances Of Equity Contracts Measured At Fair Value On a Recurring Basis Using Significant Unobservable Inputs (Level 3)

The following table provides a reconciliation of the beginning and ending balances of these equity contracts for the three and nine months ended September 30, 2023 and 2022:

	Three Months Ended September 30,				Nine Months Ended September 30,
($ in thousands)	2023		2022		2023		2022
Derivative assets:
Equity contracts
Beginning balance	$	263	$	357	$	323	$	215
Total (losses) gains included in earnings (1)	(3)		(12)		(63)		39
Issuances	92		—		92		91
Ending balance	$	352	$	345	$	352	$	345
Derivative liabilities:
Equity contracts (2)
Beginning balance	$	—	$	—	$	—	$	—
Issuances	15,119		—		15,119		—
Ending balance	$	15,119	$	—	$	15,119	$	—

(1)Includes unrealized (losses) gains recorded in Lending fees on the Consolidated Statement of Income.

(2)Equity contracts classified as derivative liabilities consist of PRSUs granted as part of EWBC’s consideration in its investment in Rayliant.

Schedule Of Quantitative Information About Significant Unobservable Inputs Used In The Valuation Of Level 3 Fair Value Measurements

The following table presents quantitative information about the significant unobservable inputs used in the valuation of Level 3 fair value measurements as of September 30, 2023 and December 31, 2022. The significant unobservable inputs presented in the table below are those that the Company considers significant to the fair value of the Level 3 assets. The Company considers unobservable inputs to be significant if, by their exclusion, the fair value of the Level 3 assets would be impacted by a predetermined percentage change.

($ in thousands)	Fair Value Measurements (Level 3)		Valuation Technique	Unobservable Inputs	Range of Inputs	Weighted-Average of Inputs
September 30, 2023
Derivative assets:
Equity contracts	$	352	Black-Scholes option pricing model	Equity volatility	41% — 51%	46	%	(1)
				Liquidity discount	47%	47	%
Derivative liabilities:
Equity contracts (2)	$	15,119	Internal model	Payout % designated based on operating revenue and operating EBITDA of investee	84%	84	%
December 31, 2022
Derivative assets:
Equity contracts	$	323	Black-Scholes option pricing model	Equity volatility	42% — 60%	54	%	(1)
				Liquidity discount	47%	47	%

(1)The calculation for the weighted-average of inputs for the derivative asset equity contracts is based on the fair value of equity contracts as of both September 30, 2023 and December 31, 2022.

(2)Equity contracts classified as derivative liabilities consist of PRSUs granted as part of EWBC’s consideration in its investment in Rayliant.

The following table presents the quantitative information about the significant unobservable inputs used in the valuation of Level 3 fair value measurements that are measured on a nonrecurring basis as of September 30, 2023 and December 31, 2022:

($ in thousands)	Fair Value Measurements (Level 3)		Valuation Techniques	Unobservable Inputs	Range of Inputs	Weighted-Average of Inputs (1)
September 30, 2023
Loans held-for-investment	$	13,955	Fair value of collateral	Discount	15% — 75%	48	%	(1)
	$	6,134	Fair value of collateral	Contract value	NM	NM
	$	15,044	Fair value of property	Selling cost	8%	8	%
Investments in qualified affordable housing partnerships, tax credit and other investments, net	$	1,038	Individual analysis of each investment	Expected future tax benefits and distributions	NM	NM
December 31, 2022
Loans held-for-investment	$	23,322	Discounted cash flows	Discount	4% — 6%	4	%	(1)
	$	17,912	Fair value of collateral	Discount	15% — 75%	37	%	(1)
	$	31,380	Fair value of property	Selling cost	8%	8	%

NM — Not meaningful.

(1)The calculation for the weighted-average of inputs is based on the relative fair value of the respective assets as of September 30, 2023 and December 31, 2022.

Schedule Of Carrying Amounts Of Assets That Were Still Held And Had Fair Value Adjustments Measured On a Nonrecurring Basis

The following tables present the carrying amounts of assets that were still held and had fair value adjustments measured on a nonrecurring basis as of September 30, 2023 and December 31, 2022:

	Assets Measured at Fair Value on a Nonrecurring Basis as of September 30, 2023
($ in thousands)	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Fair Value Measurements
Loans held-for-investment:
Commercial:
Commercial and industrial (“C&I”)	$	—	$	—	$	22,788	$	22,788
Commercial real estate (“CRE”):
Construction and land	—		—		11,141		11,141
Total commercial	—		—		33,929		33,929
Consumer:
Residential mortgage:
Home equity lines of credit (“HELOCs”)	—		—		1,204		1,204
Total consumer	—		—		1,204		1,204
Total loans held-for-investment	$	—	$	—	$	35,133	$	35,133
Investments in qualified affordable housing partnerships, tax credit and other investments, net	$	—	$	—	$	1,038	$	1,038

	Assets Measured at Fair Value on a Nonrecurring Basis as of December 31, 2022
($ in thousands)	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Fair Value Measurements
Loans held-for-investment:
Commercial:
C&I	$	—	$	—	$	40,011	$	40,011
CRE:
CRE	—		—		31,380		31,380
Total commercial	—		—		71,391		71,391
Consumer:
Residential mortgage:
HELOCs	—		—		1,223		1,223
Total consumer	—		—		1,223		1,223
Total loans held-for-investment	$	—	$	—	$	72,614	$	72,614

Schedule Of Increase (Decrease) In Fair Value Of Assets For Which a Fair Value Adjustment Was Recognized, Nonrecurring Basis

The following table presents the increase (decrease) in the fair value of certain assets held at the end of the respective reporting periods, for which a nonrecurring fair value adjustment was recognized for the three and nine months ended September 30, 2023 and 2022:

	Three Months Ended September 30,				Nine Months Ended September 30,
($ in thousands)	2023		2022		2023		2022
Loans held-for-investment:
Commercial:
C&I	$	366	$	(15,265)	$	(4,437)	$	(30,011)
CRE:
CRE	—		(118)		—		2,212
Multifamily residential	—		(5,931)		—		(5,939)
Construction and land	(10,413)		—		(10,413)		—
Total commercial	(10,047)		(21,314)		(14,850)		(33,738)
Consumer:
Residential mortgage:
HELOCs	(41)		81		(41)		166
Total consumer	(41)		81		(41)		166
Total loans held-for-investment	$	(10,088)	$	(21,233)	$	(14,891)	$	(33,572)
Investments in qualified affordable housing partnerships, tax credit and other investments, net	$	(790)	$	—	$	(1,577)	$	—
Other nonperforming assets	$	—	$	—	$	—	$	(6,861)

Schedule Of The Carrying And Fair Value Estimates Per The Fair Value Hierarchy Of Financial Instruments Measured On a Nonrecurring Basis

The following tables present the fair value estimates for financial instruments as of September 30, 2023 and December 31, 2022, excluding financial instruments recorded at fair value on a recurring basis as they are included in the tables presented elsewhere in this Note. The carrying amounts in the following tables are recorded on the Consolidated Balance Sheet under the indicated captions, except for accrued interest receivable, restricted equity securities, at cost, and mortgage servicing rights that are included in Other assets, and accrued interest payable which is included in Accrued expenses and other liabilities. These financial instruments are measured on an amortized cost basis on the Company’s Consolidated Balance Sheet.

	September 30, 2023
($ in thousands)	Carrying Amount		Level 1		Level 2		Level 3		Estimated Fair Value
Financial assets:
Cash and cash equivalents	$	4,561,178	$	4,561,178	$	—	$	—	$	4,561,178
Interest-bearing deposits with banks	$	17,213	$	—	$	17,213	$	—	$	17,213
Resale agreements	$	785,000	$	—	$	672,250	$	—	$	672,250
HTM debt securities	$	2,964,235	$	470,618	$	1,837,430	$	—	$	2,308,048
Restricted equity securities, at cost	$	79,522	$	—	$	79,522	$	—	$	79,522
Loans held-for-sale	$	4,762	$	—	$	4,762	$	—	$	4,762
Loans held-for-investment, net	$	50,251,661	$	—	$	—	$	48,992,846	$	48,992,846
Mortgage servicing rights	$	5,208	$	—	$	—	$	9,821	$	9,821
Accrued interest receivable	$	317,881	$	—	$	317,881	$	—	$	317,881
Financial liabilities:
Demand, checking, savings and money market deposits	$	38,435,954	$	—	$	38,435,954	$	—	$	38,435,954
Time deposits	$	16,651,077	$	—	$	16,547,883	$	—	$	16,547,883
Short-term borrowings	$	4,500,000	$	—	$	4,500,000	$	—	$	4,500,000
Long-term debt	$	148,173	$	—	$	144,214	$	—	$	144,214
Accrued interest payable	$	150,890	$	—	$	150,890	$	—	$	150,890

	December 31, 2022
($ in thousands)	Carrying Amount		Level 1		Level 2		Level 3		Estimated Fair Value
Financial assets:
Cash and cash equivalents	$	3,481,784	$	3,481,784	$	—	$	—	$	3,481,784
Interest-bearing deposits with banks	$	139,021	$	—	$	139,021	$	—	$	139,021
Resale agreements	$	792,192	$	—	$	693,656	$	—	$	693,656
HTM debt securities	$	3,001,868	$	471,469	$	1,983,702	$	—	$	2,455,171
Restricted equity securities, at cost	$	78,624	$	—	$	78,624	$	—	$	78,624
Loans held-for-sale	$	25,644	$	—	$	25,644	$	—	$	25,644
Loans held-for-investment, net	$	47,606,785	$	—	$	—	$	46,670,690	$	46,670,690
Mortgage servicing rights	$	6,235	$	—	$	—	$	10,917	$	10,917
Accrued interest receivable	$	263,430	$	—	$	263,430	$	—	$	263,430
Financial liabilities:
Demand, checking, savings and money market deposits	$	42,637,316	$	—	$	42,637,316	$	—	$	42,637,316
Time deposits	$	13,330,533	$	—	$	13,228,777	$	—	$	13,228,777
Repurchase agreements	$	300,000	$	—	$	304,097	$	—	$	304,097
Long-term debt	$	147,950	$	—	$	143,483	$	—	$	143,483
Accrued interest payable	$	37,198	$	—	$	37,198	$	—	$	37,198

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Assets Purchased under Resale Agreements and Sold under Repurchase Agreements (Tables)

9 Months Ended

Sep. 30, 2023

RESALE AND REPURCHASE AGREEMENTS [Abstract]

Schedule Of Balance Sheet Offsetting For Resale And Repurchase Agreements

The following tables present the resale and repurchase agreements included on the Consolidated Balance Sheet as of September 30, 2023 and December 31, 2022:

($ in thousands)	September 30, 2023
	Gross Amounts of Recognized Assets		Gross Amounts Offset on the Consolidated Balance Sheet		Net Amounts of Assets Presented on the Consolidated Balance Sheet		Gross Amounts  Not Offset on the Consolidated  Balance Sheet			Net Amount
Assets							Collateral Received
Resale agreements	$	785,000	$	—	$	785,000	$	(687,327)	(1)	$	97,673
	Gross Amounts of Recognized Liabilities		Gross Amounts Offset on the Consolidated Balance Sheet		Net Amounts of Liabilities Presented on the Consolidated Balance Sheet		Gross Amounts Not Offset on the Consolidated Balance Sheet			Net Amount
Liabilities							Collateral Pledged
Repurchase agreements	$	—	$	—	$	—	$	—		$	—

($ in thousands)	December 31, 2022
	Gross Amounts of Recognized Assets		Gross Amounts Offset on the Consolidated Balance Sheet		Net Amounts of Assets Presented on the Consolidated Balance Sheet		Gross Amounts  Not Offset on the Consolidated  Balance Sheet
Assets										Net Amount
							Collateral Received
Resale agreements	$	792,192	$	—	$	792,192	$	(701,790)	(1)	$	90,402
Liabilities	Gross Amounts of Recognized Liabilities		Gross Amounts Offset on the Consolidated Balance Sheet		Net Amounts of Liabilities Presented on the Consolidated Balance Sheet		Gross Amounts Not Offset on the Consolidated Balance Sheet
										Net Amount
							Collateral Pledged
Repurchase agreements	$	300,000	$	—	$	300,000	$	(300,000)	(2)	$	—

(1)Represents the fair value of assets the Company has received under resale agreements, limited for table presentation purposes to the amount of the recognized asset due from each counterparty. The application of collateral cannot reduce the net position below zero. Therefore, excess collateral, if any, is not reflected above.

(2)Represents the fair value of assets the Company has pledged under repurchase agreements, limited for table presentation purposes to the amount of the recognized liability due to each counterparty. The application of collateral cannot reduce the net position below zero. Therefore, excess collateral, if any, is not reflected above.

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Securities (Tables)

9 Months Ended

Sep. 30, 2023

Investments, Debt and Equity Securities [Abstract]

Debt Securities

The following tables present the amortized cost, gross unrealized gains and losses and fair value by major categories of AFS and HTM debt securities as of September 30, 2023 and December 31, 2022:

	September 30, 2023
($ in thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
AFS debt securities:
U.S. Treasury securities	$	974,615	$	48	$	(70,562)	$	904,101
U.S. government agency and U.S. government-sponsored enterprise debt securities	512,712		—		(65,248)		447,464
U.S. government agency and U.S. government-sponsored enterprise mortgage-backed securities:
Commercial mortgage-backed securities	545,086		—		(82,754)		462,332
Residential mortgage-backed securities	1,983,284		15		(288,957)		1,694,342
Municipal securities	301,408		—		(57,852)		243,556
Non-agency mortgage-backed securities:
Commercial mortgage-backed securities	418,451		—		(53,131)		365,320
Residential mortgage-backed securities	687,674		—		(116,887)		570,787
Corporate debt securities	653,501		—		(178,067)		475,434
Foreign government bonds	237,531		75		(14,816)		222,790
Asset-backed securities	44,819		—		(1,062)		43,757
CLOs	617,250		—		(7,296)		609,954
Total AFS debt securities	6,976,331		138		(936,632)		6,039,837
HTM debt securities:
U.S. Treasury securities	528,169		—		(57,551)		470,618
U.S. government agency and U.S. government-sponsored enterprise debt securities	1,001,298		—		(249,007)		752,291
U.S. government agency and U.S. government-sponsored enterprise mortgage-backed securities:
Commercial mortgage-backed securities	494,787		—		(112,623)		382,164
Residential mortgage-backed securities	750,888		—		(183,488)		567,400
Municipal securities	189,093		—		(53,518)		135,575
Total HTM debt securities	2,964,235		—		(656,187)		2,308,048
Total debt securities	$	9,940,566	$	138	$	(1,592,819)	$	8,347,885

	December 31, 2022
($ in thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
AFS debt securities:
U.S. Treasury securities	$	676,306	$	—	$	(70,103)	$	606,203
U.S. government agency and U.S. government-sponsored enterprise debt securities	517,806		67		(56,266)		461,607
U.S. government agency and U.S. government-sponsored enterprise mortgage-backed securities:
Commercial mortgage-backed securities	577,392		—		(77,123)		500,269
Residential mortgage-backed securities	2,011,054		41		(248,900)		1,762,195
Municipal securities	303,884		3		(46,788)		257,099
Non-agency mortgage-backed securities:
Commercial mortgage-backed securities	447,512		213		(49,396)		398,329
Residential mortgage-backed securities	762,202		—		(112,978)		649,224
Corporate debt securities	673,502		—		(147,228)		526,274
Foreign government bonds	241,165		174		(14,286)		227,053
Asset-backed securities	51,152		—		(2,076)		49,076
CLOs	617,250		—		(19,586)		597,664
Total AFS debt securities	6,879,225		498		(844,730)		6,034,993
HTM debt securities:
U.S. Treasury securities	524,081		—		(52,612)		471,469
U.S. government agency and U.S. government-sponsored enterprise debt securities	998,972		—		(209,560)		789,412
U.S. government agency and U.S. government-sponsored enterprise mortgage-backed securities:
Commercial mortgage-backed securities	506,965		—		(98,566)		408,399
Residential mortgage-backed securities	782,141		—		(148,230)		633,911
Municipal securities	189,709		—		(37,729)		151,980
Total HTM debt securities	3,001,868		—		(546,697)		2,455,171
Total debt securities	$	9,881,093	$	498	$	(1,391,427)	$	8,490,164

Debt Securities

The following tables present the amortized cost, gross unrealized gains and losses and fair value by major categories of AFS and HTM debt securities as of September 30, 2023 and December 31, 2022:

	September 30, 2023
($ in thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
AFS debt securities:
U.S. Treasury securities	$	974,615	$	48	$	(70,562)	$	904,101
U.S. government agency and U.S. government-sponsored enterprise debt securities	512,712		—		(65,248)		447,464
U.S. government agency and U.S. government-sponsored enterprise mortgage-backed securities:
Commercial mortgage-backed securities	545,086		—		(82,754)		462,332
Residential mortgage-backed securities	1,983,284		15		(288,957)		1,694,342
Municipal securities	301,408		—		(57,852)		243,556
Non-agency mortgage-backed securities:
Commercial mortgage-backed securities	418,451		—		(53,131)		365,320
Residential mortgage-backed securities	687,674		—		(116,887)		570,787
Corporate debt securities	653,501		—		(178,067)		475,434
Foreign government bonds	237,531		75		(14,816)		222,790
Asset-backed securities	44,819		—		(1,062)		43,757
CLOs	617,250		—		(7,296)		609,954
Total AFS debt securities	6,976,331		138		(936,632)		6,039,837
HTM debt securities:
U.S. Treasury securities	528,169		—		(57,551)		470,618
U.S. government agency and U.S. government-sponsored enterprise debt securities	1,001,298		—		(249,007)		752,291
U.S. government agency and U.S. government-sponsored enterprise mortgage-backed securities:
Commercial mortgage-backed securities	494,787		—		(112,623)		382,164
Residential mortgage-backed securities	750,888		—		(183,488)		567,400
Municipal securities	189,093		—		(53,518)		135,575
Total HTM debt securities	2,964,235		—		(656,187)		2,308,048
Total debt securities	$	9,940,566	$	138	$	(1,592,819)	$	8,347,885

	December 31, 2022
($ in thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
AFS debt securities:
U.S. Treasury securities	$	676,306	$	—	$	(70,103)	$	606,203
U.S. government agency and U.S. government-sponsored enterprise debt securities	517,806		67		(56,266)		461,607
U.S. government agency and U.S. government-sponsored enterprise mortgage-backed securities:
Commercial mortgage-backed securities	577,392		—		(77,123)		500,269
Residential mortgage-backed securities	2,011,054		41		(248,900)		1,762,195
Municipal securities	303,884		3		(46,788)		257,099
Non-agency mortgage-backed securities:
Commercial mortgage-backed securities	447,512		213		(49,396)		398,329
Residential mortgage-backed securities	762,202		—		(112,978)		649,224
Corporate debt securities	673,502		—		(147,228)		526,274
Foreign government bonds	241,165		174		(14,286)		227,053
Asset-backed securities	51,152		—		(2,076)		49,076
CLOs	617,250		—		(19,586)		597,664
Total AFS debt securities	6,879,225		498		(844,730)		6,034,993
HTM debt securities:
U.S. Treasury securities	524,081		—		(52,612)		471,469
U.S. government agency and U.S. government-sponsored enterprise debt securities	998,972		—		(209,560)		789,412
U.S. government agency and U.S. government-sponsored enterprise mortgage-backed securities:
Commercial mortgage-backed securities	506,965		—		(98,566)		408,399
Residential mortgage-backed securities	782,141		—		(148,230)		633,911
Municipal securities	189,709		—		(37,729)		151,980
Total HTM debt securities	3,001,868		—		(546,697)		2,455,171
Total debt securities	$	9,881,093	$	498	$	(1,391,427)	$	8,490,164

Debt Securities, Available-for-Sale, Unrealized Loss Position, Fair Value

The following tables present the fair value and the associated gross unrealized losses of the Company’s AFS debt securities, aggregated by investment category and the length of time that the securities have been in a continuous unrealized loss position as of September 30, 2023 and December 31, 2022.

	September 30, 2023
	Less Than 12 Months				12 Months or More				Total
($ in thousands)	Fair Value		Gross Unrealized Losses		Fair Value		Gross Unrealized Losses		Fair Value		Gross Unrealized Losses
AFS debt securities:
U.S. Treasury securities	$	—	$	—	$	605,730	$	(70,562)	$	605,730	$	(70,562)
U.S. government agency and U.S. government sponsored enterprise debt securities	199,139		(861)		248,325		(64,387)		447,464		(65,248)
U.S. government agency and U.S. government-sponsored enterprise mortgage-backed securities:
Commercial mortgage-backed securities	4,434		(96)		457,898		(82,658)		462,332		(82,754)
Residential mortgage-backed securities	63,660		(517)		1,627,451		(288,440)		1,691,111		(288,957)
Municipal securities	5,891		(288)		237,665		(57,564)		243,556		(57,852)
Non-agency mortgage-backed securities:
Commercial mortgage-backed securities	—		—		365,320		(53,131)		365,320		(53,131)
Residential mortgage-backed securities	—		—		570,787		(116,887)		570,787		(116,887)
Corporate debt securities	—		—		475,434		(178,067)		475,434		(178,067)
Foreign government bonds	109,413		(249)		85,433		(14,567)		194,846		(14,816)
Asset-backed securities	—		—		43,757		(1,062)		43,757		(1,062)
CLOs	—		—		609,954		(7,296)		609,954		(7,296)
Total AFS debt securities	$	382,537	$	(2,011)	$	5,327,754	$	(934,621)	$	5,710,291	$	(936,632)

	December 31, 2022
	Less Than 12 Months				12 Months or More				Total
($ in thousands)	Fair Value		Gross Unrealized Losses		Fair Value		Gross Unrealized Losses		Fair Value		Gross Unrealized Losses
AFS debt securities:
U.S. Treasury securities	$	131,843	$	(8,761)	$	474,360	$	(61,342)	$	606,203	$	(70,103)
U.S. government agency and U.S. government-sponsored enterprise debt securities	97,403		(6,902)		214,136		(49,364)		311,539		(56,266)
U.S. government agency and U.S. government-sponsored enterprise mortgage-backed securities:
Commercial mortgage-backed securities	252,144		(30,029)		248,125		(47,094)		500,269		(77,123)
Residential mortgage-backed securities	307,536		(20,346)		1,448,658		(228,554)		1,756,194		(248,900)
Municipal securities	95,655		(10,194)		159,439		(36,594)		255,094		(46,788)
Non-agency mortgage-backed securities:
Commercial mortgage-backed securities	106,184		(3,309)		282,301		(46,087)		388,485		(49,396)
Residential mortgage-backed securities	22,715		(1,546)		626,509		(111,432)		649,224		(112,978)
Corporate debt securities	173,595		(17,907)		352,679		(129,321)		526,274		(147,228)
Foreign government bonds	107,576		(429)		36,143		(13,857)		143,719		(14,286)
Asset-backed securities	12,450		(524)		36,626		(1,552)		49,076		(2,076)
CLOs	144,365		(4,735)		453,299		(14,851)		597,664		(19,586)
Total AFS debt securities	$	1,451,466	$	(104,682)	$	4,332,275	$	(740,048)	$	5,783,741	$	(844,730)

Schedule Of The Gross Realized Gains And Tax Expense Related To The Sales And Impairment Write-Off Of AFS Debt Securities

The following table presents the gross realized gains from the sales and impairment write-off of AFS debt securities and the related tax expense (benefit) included in earnings for the three and nine months ended September 30, 2023 and 2022:

	Three Months Ended September 30,				Nine Months Ended September 30,
($ in thousands)	2023		2022		2023		2022
Gross realized gains from sales	$	—	$	—	$	—	$	1,306
Impairment write-off (1)	$	—	$	—	$	10,000	$	—
Related tax expense (benefit)	$	—	$	—	$	(2,956)	$	386

(1)During the first quarter of 2023, the Company fully wrote down a subordinated debt security and recorded the impairment loss as a component of noninterest income in the Company’s Consolidated Statement of Income.

Schedule of Composition of Interest Income on Debt Securities

The following table presents the composition of interest income on debt securities for the three and nine months ended September 30, 2023 and 2022:

	Three Months Ended September 30,				Nine Months Ended September 30,
($ in thousands)	2023		2022		2023		2022
Taxable interest	$	63,877	$	46,172	$	189,065	$	125,626
Nontaxable interest	5,901		4,920		15,614		14,309
Total interest income on debt securities	$	69,778	$	51,092	$	204,679	$	139,935

Schedule Of Contractual Maturities And Weighted Average Yields Of AFS And HTM Debt Securities

The following tables present the contractual maturities, amortized cost, fair value and weighted-average yields of AFS and HTM debt securities as of September 30, 2023. Expected maturities will differ from contractual maturities on certain securities as the issuers and borrowers of the underlying collateral may have the right to call or prepay obligations with or without prepayment penalties.

($ in thousands)	Within One Year			After One Year through Five Years			After Five Years through Ten Years			After Ten Years			Total
AFS debt securities:
U.S. Treasury securities
Amortized cost	$	298,323		$	676,292		$	—		$	—		$	974,615
Fair value	298,371			605,730			—			—			904,101
Weighted-average yield (1)	5.44		%	1.20		%	—		%	—		%	2.50		%
U.S. government agency and U.S. government-sponsored enterprise debt securities
Amortized cost	150,000			96,472			103,171			163,069			512,712
Fair value	149,616			91,343			82,252			124,253			447,464
Weighted-average yield (1)	4.98		%	3.08		%	1.39		%	2.18		%	3.01		%
U.S. government agency and U.S. government-sponsored enterprise mortgage-backed securities
Amortized cost	—			42,260			144,846			2,341,264			2,528,370
Fair value	—			39,718			128,933			1,988,023			2,156,674
Weighted-average yield (1) (2)	—		%	3.16		%	2.73		%	3.68		%	3.62		%
Municipal securities
Amortized cost	2,400			36,850			9,007			253,151			301,408
Fair value	2,383			33,794			7,596			199,783			243,556
Weighted-average yield (1) (2)	3.13		%	2.34		%	2.87		%	2.24		%	2.28		%
Non-agency mortgage-backed securities
Amortized cost	99,830			92,328			11,056			902,911			1,106,125
Fair value	98,420			89,370			10,793			737,524			936,107
Weighted-average yield (1)	6.27		%	4.16		%	0.80		%	2.58		%	3.02		%
Corporate debt securities
Amortized cost	—			—			349,501			304,000			653,501
Fair value	—			—			280,812			194,622			475,434
Weighted-average yield (1)	—		%	—		%	3.48		%	1.97		%	2.78		%
Foreign government bonds
Amortized cost	32,875			104,656			50,000			50,000			237,531
Fair value	32,810			104,546			49,609			35,825			222,790
Weighted-average yield (1)	3.02		%	2.28		%	5.71		%	1.50		%	2.94		%
Asset-backed securities
Amortized cost	—			—			—			44,819			44,819
Fair value	—			—			—			43,757			43,757
Weighted-average yield (1)	—		%	—		%	—		%	6.01		%	6.01		%
CLOs
Amortized cost	—			—			319,000			298,250			617,250
Fair value	—			—			314,219			295,735			609,954
Weighted-average yield (1)	—		%	—		%	6.71		%	6.76		%	6.73		%
Total AFS debt securities
Amortized cost	$	583,428		$	1,048,858		$	986,581		$	4,357,464		$	6,976,331
Fair value	$	581,600		$	964,501		$	874,214		$	3,619,522		$	6,039,837
Weighted-average yield (1)	5.32		%	1.86		%	4.27		%	3.40		%	3.45		%

($ in thousands)	Within One Year			After One Year through Five Years			After Five Years through Ten Years			After Ten Years			Total
HTM debt securities:
U.S. Treasury securities
Amortized cost	$	—		$	528,169		$	—		$	—		$	528,169
Fair value	—			470,618			—			—			470,618
Weighted-average yield (1)	—		%	1.05		%	—		%	—		%	1.05		%
U.S. government agency and U.S. government-sponsored enterprise debt securities
Amortized cost	—			—			328,870			672,428			1,001,298
Fair value	—			—			265,107			487,184			752,291
Weighted-average yield (1)	—		%	—		%	1.92		%	1.89		%	1.90		%
U.S. government agency and U.S. government-sponsored enterprise mortgage-backed securities
Amortized cost	—			—			94,992			1,150,683			1,245,675
Fair value	—			—			76,426			873,138			949,564
Weighted-average yield (1) (2)	—		%	—		%	1.56		%	1.68		%	1.67		%
Municipal securities
Amortized cost	—			—			—			189,093			189,093
Fair value	—			—			—			135,575			135,575
Weighted-average yield (1) (2)	—		%	—		%	—		%	1.99		%	1.99		%
Total HTM debt securities
Amortized cost	$	—		$	528,169		$	423,862		$	2,012,204		$	2,964,235
Fair value	$	—		$	470,618		$	341,533		$	1,495,897		$	2,308,048
Weighted-average yield (1)	—		%	1.05		%	1.84		%	1.78		%	1.66		%

(1)Weighted-average yields are computed based on amortized cost balances.

(2)Yields on tax-exempt securities are not presented on a tax-equivalent basis.

Schedule Of Restricted Equity Securities

The following table presents the restricted equity securities included in Other assets on the Consolidated Balance Sheet as of September 30, 2023 and December 31, 2022:

($ in thousands)	September 30, 2023		December 31, 2022
Federal Reserve Bank of San Francisco (“FRBSF”) stock	$	62,272	$	61,374
FHLB stock	17,250		17,250
Total restricted equity securities	$	79,522	$	78,624

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Derivatives (Tables)

9 Months Ended

Sep. 30, 2023

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule Of Notional And Gross Fair Values Of Derivatives

The following table presents the notional amounts and fair values of the Company’s derivatives as of September 30, 2023 and December 31, 2022. Certain derivative contracts are cleared though central clearing organizations where variation margin is applied daily as settlement to the fair values of the contracts. The fair values are presented on a gross basis prior to the application of bilateral collateral and master netting agreements, but after the application of variation margin payments as settlement to fair values of contracts cleared through central clearing organizations. Applying variation margin payments as settlement to the fair values of derivative contracts cleared through the London Clearing House (“LCH”) and the Chicago Mercantile Exchange (“CME”) resulted in reductions in the derivative asset and liability fair values by $16.0 million and $65.7 million, respectively, as of September 30, 2023. In comparison, applying variation margin payments as settlement to LCH- and CME-cleared derivative transactions resulted in reductions in the derivative asset and liability fair values by $167.2 million and $81.3 million, respectively, as of December 31, 2022. Total derivative asset and liability fair values are adjusted to reflect the effects of legally enforceable master netting agreements and cash collateral received or paid. The resulting net derivative asset and liability fair values are included in Other assets and Accrued expenses and other liabilities, respectively, on the Consolidated Balance Sheet.

	September 30, 2023								December 31, 2022
			Fair Value								Fair Value
($ in thousands)	Notional Amount		Derivative Assets			Derivative Liabilities			Notional Amount		Derivative Assets			Derivative Liabilities
Derivatives designated as hedging instruments:
Cash flow hedges:
Interest rate contracts	$	5,000,000	$	1,288		$	96,382		$	3,450,000	$	13,455		$	19,687
Net investment hedges:
Foreign exchange contracts	81,480		3,709			—			84,832		5,590			—
Total derivatives designated as hedging instruments	$	5,081,480	$	4,997		$	96,382		$	3,534,832	$	19,045		$	19,687
Derivatives not designated as hedging instruments:
Interest rate contracts	$	17,456,102	$	622,799		$	615,920		$	16,932,414	$	426,828		$	564,829
Commodity contracts (1)	—		137,500			143,855			—		261,613			258,608
Foreign exchange contracts	5,205,007		96,668			77,099			2,982,891		47,519			44,117
Credit contracts (2)	143,703		—			12			140,950		—			23
Equity contracts	—		352		(3)	15,119		(4)	—		323		(3)	—
Total derivatives not designated as hedging instruments	$	22,804,812	$	857,319		$	852,005		$	20,056,255	$	736,283		$	867,577
Gross derivative assets/liabilities			$	862,316		$	948,387				$	755,328		$	887,264
Less: Master netting agreements			(260,648)			(260,648)					(242,745)			(242,745)
Less: Cash collateral received			(269,683)			(2,225)					(372,038)			—
Net derivative assets/liabilities			$	331,985		$	685,514				$	140,545		$	644,519

(1)The notional amount of the Company’s commodity contracts totaled 20,672 thousand barrels of crude oil and 363,020 thousand units of natural gas, measured in million British thermal units (“MMBTUs”) as of September 30, 2023. In comparison, the notional amount of the Company’s commodity contracts totaled 12,005 thousand barrels of crude oil and 247,704 thousand MMBTUs of natural gas as of December 31, 2022.

(2)The notional amount of the credit contracts reflects the Company’s pro-rata share of the derivative instruments in RPAs.

(3)The Company held warrant equity contracts in one public company and 13 private companies as of both September 30, 2023 and December 31, 2022.

(4)Equity contracts classified as derivative liabilities consist of 349,138 PRSUs granted as part of EWBC’s consideration in its investment in Rayliant.

The following table presents the notional amounts and the gross fair values of the interest rate and foreign exchange derivatives entered into with customers and with third-party financial institutions as economic hedges to customers’ positions as of September 30, 2023 and December 31, 2022:

	September 30, 2023						December 31, 2022
			Fair Value						Fair Value
($ in thousands)	Notional Amount		Assets		Liabilities		Notional Amount		Assets		Liabilities
Customer-related positions:
Interest rate contracts:
Swaps	$	6,890,450	$	691	$	584,962	$	6,656,491	$	1,438	$	521,719
Written options	1,486,958		—		21,864		1,548,158		—		30,904
Collars and corridors	306,996		—		7,619		215,773		—		8,924
Subtotal	8,684,404		691		614,445		8,420,422		1,438		561,547
Foreign exchange contracts:
Forwards and spot	62,237		11,376		24,484		993,588		17,009		18,090
Swaps	2,494,517		16,282		23,687		623,143		6,629		12,178
Other	142,000		5,630		—		121,631		2,070		245
Subtotal	2,698,754		33,288		48,171		1,738,362		25,708		30,513
Total	$	11,383,158	$	33,979	$	662,616	$	10,158,784	$	27,146	$	592,060
Economic hedges:
Interest rate contracts:
Swaps	$	6,916,364	$	592,177	$	1,119	$	6,683,828	$	384,201	$	2,047
Purchased options	1,517,648		22,285		—		1,580,275		32,233		—
Written options	30,690		—		356		32,117		—		1,235
Collars and corridors	306,996		7,646		—		215,772		8,956		—
Subtotal	8,771,698		622,108		1,475		8,511,992		425,390		3,282
Foreign exchange contracts:
Forwards and spot	1,060,498		452		313		77,998		3,050		87
Swaps	1,303,755		62,928		22,985		1,044,900		18,516		11,447
Other	142,000		—		5,630		121,631		245		2,070
Subtotal	2,506,253		63,380		28,928		1,244,529		21,811		13,604
Total	$	11,277,951	$	685,488	$	30,403	$	9,756,521	$	447,201	$	16,886

The Company enters into energy commodity contracts with its customers in the oil and gas sector, which allow them to hedge against the risk of fluctuation in energy commodity prices. Offsetting contracts entered with third-party financial institutions are used as economic hedges to manage the Company’s exposure on its customer-related positions. The following table presents the notional amounts in units and the gross fair values of the commodity derivatives issued for customer-related positions and economic hedges as of September 30, 2023 and December 31, 2022:

	September 30, 2023						December 31, 2022
			Fair Value						Fair Value
($ and unit in thousands)	Notional Units		Assets		Liabilities		Notional Units		Assets		Liabilities
Customer-related positions:
Commodity contracts:
Crude oil:
Swaps	3,958	Barrels	$	27,543	$	1,717	2,465	Barrels	$	39,955	$	6,178
Collars	6,362	Barrels	24,552		119		3,011	Barrels	16,038		2,630
Written options	—	Barrels	—		—		—	Barrels	558		—
Subtotal	10,320	Barrels	52,095		1,836		5,476	Barrels	56,551		8,808
Natural gas:
Swaps	129,940	MMBTUs	32,428		55,387		92,590	MMBTUs	112,314		73,208
Collars	50,763	MMBTUs	865		11,535		32,072	MMBTUs	2,217		18,317
Written options	1,955	MMBTUs	—		206		—	MMBTUs	—		—
Subtotal	182,658	MMBTUs	33,293		67,128		124,662	MMBTUs	114,531		91,525
Total			$	85,388	$	68,964			$	171,082	$	100,333
Economic hedges:
Commodity contracts:
Crude oil:
Swaps	3,990	Barrels	$	2,165	$	24,403	2,587	Barrels	$	6,935	$	36,060
Collars	6,362	Barrels	—		18,781		3,942	Barrels	1,378		12,856
Purchased options	—	Barrels	—		—		—	Barrels	—		516
Subtotal	10,352	Barrels	2,165		43,184		6,529	Barrels	8,313		49,432
Natural gas:
Swaps	129,405	MMBTUs	42,804		31,289		91,900	MMBTUs	69,767		106,883
Collars	49,003	MMBTUs	6,937		418		31,142	MMBTUs	12,451		1,960
Purchased options	1,955	MMBTUs	206		—		—	MMBTUs	—		—
Subtotal	180,363	MMBTUs	49,947		31,707		123,042	MMBTUs	82,218		108,843
Total			$	52,112	$	74,891			$	90,531	$	158,275

Schedule Of Pre-Tax Changes In AOCI From Cash Flows Hedges

The following table presents the pre-tax changes in AOCI from cash flow hedges for the three and nine months ended September 30, 2023 and 2022. The after-tax impact of cash flow hedges on AOCI is shown in Note 14 — Accumulated Other Comprehensive Income (Loss) to the Consolidated Financial Statements in this Form-10-Q.

	Three Months Ended September 30,				Nine Months Ended September 30,
($ in thousands)	2023		2022		2023			2022
Losses recognized in AOCI:
Interest rate contracts	$	(62,715)	$	(48,325)	$	(129,329)		$	(88,771)
Gains (losses) reclassified from AOCI into earnings:
Interest expense (for cash flow hedges on borrowings)	$	—	$	1,251	$	696		$	1,385
Interest and dividend income (for cash flow hedges on loans)	(24,059)		(2,870)		(57,265)			216
Noninterest income	—		—		1,614		(1)	—
Total	$	(24,059)	$	(1,619)	$	(54,955)		$	1,601

(1)Represents the amounts in AOCI reclassified into earnings as a result that the forecasted cash flows were no longer probable to occur.

Tabular Disclosure Of Gains and Losses On Derivative Instruments Qualified And Designated In Net Investment Hedges

The following table presents the pre-tax gains recognized in AOCI on net investment hedges for the three and nine months ended September 30, 2023 and 2022:

	Three Months Ended September 30,				Nine Months Ended September 30,
($ in thousands)	2023		2022		2023		2022
Gains recognized in AOCI	$	63	$	4,343	$	2,886	$	6,027

Schedule Of The Net (Losses) Gains Recognized On The Company’s Consolidated Statement of Income Related To Derivatives Not Designated as Hedging Instruments

The following table presents the net gains (losses) recognized on the Company’s Consolidated Statement of Income related to derivatives not designated as hedging instruments for the three and nine months ended September 30, 2023 and 2022:

	Classification on Consolidated Statement of Income	Three Months Ended September 30,				Nine Months Ended September 30,
($ in thousands)		2023		2022		2023		2022
Derivatives not designated as hedging instruments:
Interest rate contracts	Interest rate contracts and other derivative income	$	5,283	$	4,870	$	4,022	$	18,439
Foreign exchange contracts	Foreign exchange income	7,267		3,831		37,607		6,596
Credit contracts	Interest rate contracts and other derivative income	4		50		11		114
Equity contracts - warrants	Lending fees	89		(13)		29		175
Commodity contracts	Interest rate contracts and other derivative income	27		(156)		193		139
Net gains		$	12,670	$	8,582	$	41,862	$	25,463

Schedule Of Gross Derivative Fair Values, The Balance Sheet Netting Adjustments And The Resulting Net Fair Values Recorded On The Consolidated Balance Sheet, As Well As The Cash and Non-Cash Collateral Associated With Master Netting Arrangements

The following tables present the gross derivative fair values, the balance sheet netting adjustments, and the resulting net fair values recorded on the Consolidated Balance Sheet, as well as the cash and noncash collateral associated with master netting arrangements. The gross amounts of derivative assets and liabilities are presented after the application of variation margin payments as settlements to the fair values of contracts cleared through central clearing organizations, where applicable. The collateral amounts in the following tables are limited to the outstanding balances of the related asset or liability. Therefore, instances of over-collateralization are not shown:

($ in thousands)	As of September 30, 2023
	Gross Amounts Recognized (1)		Gross Amounts Offset on the Consolidated Balance Sheet				Net Amounts Presented on the Consolidated Balance Sheet		Gross Amounts Not Offset on the Consolidated Balance Sheet		Net Amount
			Master Netting Arrangements		Cash Collateral Received (3)				Security Collateral Received (5)
Derivative assets	$	862,316	$	(260,648)	$	(269,683)	$	331,985	$	(280,043)	$	51,942
	Gross Amounts Recognized (2)		Gross Amounts Offset on the Consolidated Balance Sheet				Net Amounts Presented on the Consolidated Balance Sheet		Gross Amounts Not Offset on the Consolidated Balance Sheet		Net Amount
			Master Netting Arrangements		Cash Collateral Pledged (4)				Security Collateral Pledged (5)
Derivative liabilities	$	948,387	$	(260,648)	$	(2,225)	$	685,514	$	—	$	685,514

($ in thousands)	As of December 31, 2022
	Gross Amounts Recognized (1)		Gross Amounts Offset on the Consolidated Balance Sheet				Net Amounts Presented on the Consolidated Balance Sheet		Gross Amounts Not Offset on the Consolidated Balance Sheet		Net Amount
			Master Netting Arrangements		Cash Collateral Received (3)				Security Collateral Received (5)
Derivative assets	$	755,328	$	(242,745)	$	(372,038)	$	140,545	$	(60,567)	$	79,978
	Gross Amounts Recognized (2)		Gross Amounts Offset on the Consolidated Balance Sheet				Net Amounts Presented on the Consolidated Balance Sheet		Gross Amounts Not Offset on the Consolidated Balance Sheet		Net Amount
			Master Netting Arrangements		Cash Collateral Pledged (4)				Security Collateral Pledged (5)
Derivative liabilities	$	887,264	$	(242,745)	$	—	$	644,519	$	(38,438)	$	606,081

(1)Includes $1.8 million and $2.1 million of gross fair value assets with counterparties that were not subject to enforceable master netting arrangements or similar agreements as of September 30, 2023 and December 31, 2022, respectively.

(2)Includes $16.2 million and $566 thousand of gross fair value liabilities with counterparties that were not subject to enforceable master netting arrangements or similar agreements as of September 30, 2023 and December 31, 2022, respectively.

(3)Gross cash collateral received under master netting arrangements or similar agreements was $275.7 million and $384.9 million as of September 30, 2023 and December 31, 2022, respectively. Of the gross cash collateral received, $269.7 million and $372.0 million were used to offset against derivative assets as of September 30, 2023 and December 31, 2022, respectively.

(4)Gross cash collateral pledged under master netting arrangements or similar agreements was $3.1 million and $490 thousand as of September 30, 2023 and December 31, 2022, respectively. Of the gross cash collateral pledged, $2.2 million was used to offset against derivative liabilities as of September 30, 2023. In comparison, no cash collateral was used to offset against derivative liabilities as of December 31, 2022.

(5)Represents the fair value of security collateral received or pledged limited to derivative assets or liabilities that are subject to enforceable master netting arrangements or similar agreements. U.S. GAAP does not permit the netting of noncash collateral on the Consolidated Balance Sheet but requires the disclosure of such amounts.

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Loans Receivable and Allowance for Credit Losses (Tables)

9 Months Ended

Sep. 30, 2023

Loans and Leases Receivable Disclosure [Abstract]

Schedule Of Composition Of Loans Held-For-Investment

The following table presents the composition of the Company’s loans held-for-investment outstanding as of September 30, 2023 and December 31, 2022:

($ in thousands)	September 30, 2023		December 31, 2022
Commercial:
C&I	$	15,864,042	$	15,711,095
CRE:
CRE	14,667,378		13,857,870
Multifamily residential	4,900,097		4,573,068
Construction and land	798,190		638,420
Total CRE	20,365,665		19,069,358
Total commercial	36,229,707		34,780,453
Consumer:
Residential mortgage:
Single-family residential	12,836,558		11,223,027
HELOCs	1,776,665		2,122,655
Total residential mortgage	14,613,223		13,345,682
Other consumer	64,254		76,295
Total consumer	14,677,477		13,421,977
Total loans held-for-investment (1)	$	50,907,184	$	48,202,430
Allowance for loan losses	(655,523)		(595,645)
Loans held-for-investment, net (1)	$	50,251,661	$	47,606,785

(1)Includes $72.0 million and $70.4 million comprising unamortized deferred and unearned fees, net of premiums as of September 30, 2023 and December 31, 2022, respectively.

Schedule Of Loans Held-For-Investment By Loan Portfolio Segments, Internal Risk Ratings, Gross Write-Offs And Vintage Year

The following tables summarize the Company’s loans held-for-investment and current year-to-date gross write-offs by loan portfolio segments, internal risk ratings and vintage year as of the periods presented. The vintage year is the year of loan origination, renewal or major modification. Revolving loans that are converted to term loans presented in the tables below are excluded from term loans by vintage year columns.

	September 30, 2023
	Term Loans by Origination Year
($ in thousands)	2023		2022		2021		2020		2019		Prior		Revolving Loans		Revolving Loans Converted to Term Loans (1)		Total
Commercial:
C&I:
Pass	$	1,858,749	$	1,942,241	$	1,470,818	$	354,650	$	259,342	$	164,149	$	9,254,852	$	20,248	$	15,325,049
Criticized (accrual)	88,542		110,918		91,272		45,069		25,603		23,640		104,802		—		489,846
Criticized (nonaccrual)	2,084		10,480		13		8,694		6,134		21,709		33		—		49,147
Total C&I	1,949,375		2,063,639		1,562,103		408,413		291,079		209,498		9,359,687		20,248		15,864,042
YTD gross write-offs (2)	350		28		161		15		6,606		1,684		—		—		8,844
CRE:
Pass	2,066,361		4,080,810		2,259,761		1,396,114		1,649,168		2,722,697		101,811		63,050		14,339,772
Criticized (accrual)	36,899		14,717		20,307		100,871		24,544		129,658		—		—		326,996
Criticized (nonaccrual)	—		—		—		—		451		159		—		—		610
Subtotal CRE	2,103,260		4,095,527		2,280,068		1,496,985		1,674,163		2,852,514		101,811		63,050		14,667,378
YTD gross write-offs (2)	—		—		—		—		—		119		—		—		119
Multifamily residential:
Pass	478,895		1,495,620		814,391		620,117		503,791		893,282		7,658		1,288		4,815,042
Criticized (accrual)	—		—		53,555		—		696		26,124		—		—		80,375
Criticized (nonaccrual)	—		—		—		—		—		4,680		—		—		4,680
Subtotal multifamily residential	478,895		1,495,620		867,946		620,117		504,487		924,086		7,658		1,288		4,900,097
Construction and land:
Pass	151,175		354,415		222,474		37,732		812		5,475		14,966		—		787,049
Criticized (nonaccrual)	—		—		—		—		—		11,141		—		—		11,141
Subtotal construction and land	151,175		354,415		222,474		37,732		812		16,616		14,966		—		798,190
YTD gross write-offs	—		—		—		—		—		10,413		—		—		10,413
Total CRE	2,733,330		5,945,562		3,370,488		2,154,834		2,179,462		3,793,216		124,435		64,338		20,365,665
YTD gross write-offs (2)	—		—		—		—		—		10,532		—		—		10,532
Total commercial	$	4,682,705	$	8,009,201	$	4,932,591	$	2,563,247	$	2,470,541	$	4,002,714	$	9,484,122	$	84,586	$	36,229,707
YTD total commercial gross write-offs (2)	$	350	$	28	$	161	$	15	$	6,606	$	12,216	$	—	$	—	$	19,376

	September 30, 2023
	Term Loans by Origination Year
($ in thousands)	2023		2022		2021		2020		2019		Prior		Revolving Loans		Revolving Loans Converted to Term Loans (1)		Total
Consumer:
Residential mortgage:
Single-family residential:
Pass (3)	$	2,400,448	$	3,390,708	$	2,321,209	$	1,633,316	$	1,010,859	$	2,040,678	$	—	$	—	$	12,797,218
Criticized (accrual)	844		1,983		844		1,499		964		9,060		—		—		15,194
Criticized (nonaccrual) (3)	1,916		2,866		4,702		2,696		2,868		9,098		—		—		24,146
Subtotal single-family residential mortgage	2,403,208		3,395,557		2,326,755		1,637,511		1,014,691		2,058,836		—		—		12,836,558
HELOCs:
Pass	182		1,828		5,736		4,318		1,963		13,821		1,611,319		118,088		1,757,255
Criticized (accrual)	741		401		62		—		353		1,649		2,039		963		6,208
Criticized (nonaccrual)	—		517		—		1,359		68		5,396		1,751		4,111		13,202
Subtotal HELOCs	923		2,746		5,798		5,677		2,384		20,866		1,615,109		123,162		1,776,665
YTD gross write-offs (2)	—		—		—		—		—		41		—		6		47
Total residential mortgage	2,404,131		3,398,303		2,332,553		1,643,188		1,017,075		2,079,702		1,615,109		123,162		14,613,223
YTD gross write-offs (2)	—		—		—		—		—		41		—		6		47
Other consumer:
Pass	3,555		18,138		135		—		—		12,315		29,971		—		64,114
Criticized (accrual)	4		—		—		—		—		—		—		—		4
Criticized (nonaccrual)	—		—		—		—		—		—		136		—		136
Total other consumer	3,559		18,138		135		—		—		12,315		30,107		—		64,254
Total consumer	$	2,407,690	$	3,416,441	$	2,332,688	$	1,643,188	$	1,017,075	$	2,092,017	$	1,645,216	$	123,162	$	14,677,477
YTD total consumer gross write-offs (2)	$	—	$	—	$	—	$	—	$	—	$	41	$	—	$	6	$	47
Total loans held-for-investment:
Pass	$	6,959,365	$	11,283,760	$	7,094,524	$	4,046,247	$	3,425,935	$	5,852,417	$	11,020,577	$	202,674	$	49,885,499
Criticized (accrual)	127,030		128,019		166,040		147,439		52,160		190,131		106,841		963		918,623
Criticized (nonaccrual)	4,000		13,863		4,715		12,749		9,521		52,183		1,920		4,111		103,062
Total	$	7,090,395	$	11,425,642	$	7,265,279	$	4,206,435	$	3,487,616	$	6,094,731	$	11,129,338	$	207,748	$	50,907,184
YTD total loans held-for-investment gross write-offs (2)	$	350	$	28	$	161	$	15	$	6,606	$	12,257	$	—	$	6	$	19,423

	December 31, 2022
	Term Loans by Origination Year
($ in thousands)	2022		2021		2020		2019		2018		Prior		Revolving Loans		Revolving Loans Converted to Term Loans (1)		Total
Commercial:
C&I:
Pass	$	2,831,834	$	2,053,215	$	623,026	$	392,013	$	143,970	$	97,605	$	9,177,401	$	20,548	$	15,339,612
Criticized (accrual)	72,210		34,296		48,761		34,221		20,646		12,933		97,988		—		321,055
Criticized (nonaccrual)	18,722		4,797		10,733		243		5,618		10,315		—		—		50,428
Total C&I	2,922,766		2,092,308		682,520		426,477		170,234		120,853		9,275,389		20,548		15,711,095
CRE:
Pass	4,178,780		2,404,634		1,505,150		1,771,679		1,471,710		1,909,925		165,653		22,009		13,429,540
Criticized (accrual)	3,518		60,573		159,424		40,095		91,132		32,173		1,455		16,716		405,086
Criticized (nonaccrual)	—		19,044		—		—		—		4,200		—		—		23,244
Subtotal CRE	4,182,298		2,484,251		1,664,574		1,811,774		1,562,842		1,946,298		167,108		38,725		13,857,870
Multifamily residential:
Pass	1,500,289		892,598		641,677		519,614		350,044		625,293		11,325		—		4,540,840
Criticized (accrual)	—		—		—		707		4,276		27,076		—		—		32,059
Criticized (nonaccrual)	—		—		—		—		—		169		—		—		169
Subtotal multifamily residential	1,500,289		892,598		641,677		520,321		354,320		652,538		11,325		—		4,573,068
Construction and land:
Pass	288,394		276,839		31,804		3,104		2,805		231		9,073		—		612,250
Criticized (accrual)	4,504		—		—		—		21,666		—		—		—		26,170
Subtotal construction and land	292,898		276,839		31,804		3,104		24,471		231		9,073		—		638,420
Total CRE	5,975,485		3,653,688		2,338,055		2,335,199		1,941,633		2,599,067		187,506		38,725		19,069,358
Total commercial	$	8,898,251	$	5,745,996	$	3,020,575	$	2,761,676	$	2,111,867	$	2,719,920	$	9,462,895	$	59,273	$	34,780,453
Consumer:
Residential mortgage:
Single-family residential:
Pass (3)	$	3,548,894	$	2,453,717	$	1,775,696	$	1,101,965	$	817,164	$	1,500,359	$	—	$	—	$	11,197,795
Criticized (accrual)	—		1,275		785		1,463		4,352		3,935		—		—		11,810
Criticized (nonaccrual) (3)	141		—		204		3,202		1,721		8,154		—		—		13,422
Subtotal single-family residential mortgage	3,549,035		2,454,992		1,776,685		1,106,630		823,237		1,512,448		—		—		11,223,027
HELOCs:
Pass	520		3,583		7,336		3,203		525		8,960		1,958,692		127,401		2,110,220
Criticized (accrual)	—		6		—		—		—		—		4		1,079		1,089
Criticized (nonaccrual)	—		—		483		231		1,017		4,844		1,001		3,770		11,346
Subtotal HELOCs	520		3,589		7,819		3,434		1,542		13,804		1,959,697		132,250		2,122,655
Total residential mortgage	3,549,555		2,458,581		1,784,504		1,110,064		824,779		1,526,252		1,959,697		132,250		13,345,682
Other consumer:
Pass	17,088		137		5,356		—		—		15,808		37,804		—		76,193
Criticized (accrual)	3		—		—		—		—		—		—		—		3
Criticized (nonaccrual)	—		—		—		—		—		—		99		—		99
Total other consumer	17,091		137		5,356		—		—		15,808		37,903		—		76,295
Total consumer	$	3,566,646	$	2,458,718	$	1,789,860	$	1,110,064	$	824,779	$	1,542,060	$	1,997,600	$	132,250	$	13,421,977
Total by Risk Rating:
Pass	$	12,365,799	$	8,084,723	$	4,590,045	$	3,791,578	$	2,786,218	$	4,158,181	$	11,359,948	$	169,958	$	47,306,450
Criticized (accrual)	80,235		96,150		208,970		76,486		142,072		76,117		99,447		17,795		797,272
Criticized (nonaccrual)	18,863		23,841		11,420		3,676		8,356		27,682		1,100		3,770		98,708
Total	$	12,464,897	$	8,204,714	$	4,810,435	$	3,871,740	$	2,936,646	$	4,261,980	$	11,460,495	$	191,523	$	48,202,430

(1)$11.2 million and $24.6 million of total commercial loans, primarily comprised of CRE revolving loans, converted to term loans during the three and nine months ended September 30, 2023, respectively. In comparison, $0 and $26.4 million of total commercial loans, primarily comprised of CRE revolving loans, converted to term loans during the three and nine months ended September 30, 2022. $20.6 million and $27.7 million of total consumer loans, comprised of HELOCs, were converted to term loans during three and nine months ended September 30, 2023, respectively. In comparison, $375 thousand of total consumer loans, comprised of HELOCs, converted to term loans during both the three and nine months ended September 30, 2022.

(2)Excludes gross write-offs associated with loans the Company sold or settled.

(3)As of September 30, 2023 and December 31, 2022, $638 thousand and $818 thousand, respectively, of nonaccrual loans whose payments were guaranteed by the Federal Housing Administration were classified with a “Pass” rating.

Schedule Of Aging Analysis Of Loans

The following tables present the aging analysis of loans held-for-investment as of September 30, 2023 and December 31, 2022:

	September 30, 2023
($ in thousands)	Current Accruing Loans		Accruing Loans 30-59 Days Past Due		Accruing Loans 60-89 Days Past Due		Total Accruing Past Due Loans		Total Nonaccrual Loans		Total Loans
Commercial:
C&I	$	15,781,468	$	33,195	$	232	$	33,427	$	49,147	$	15,864,042
CRE:
CRE	14,664,230		2,015		523		2,538		610		14,667,378
Multifamily residential	4,894,334		1,083		—		1,083		4,680		4,900,097
Construction and land	787,049		—		—		—		11,141		798,190
Total CRE	20,345,613		3,098		523		3,621		16,431		20,365,665
Total commercial	36,127,081		36,293		755		37,048		65,578		36,229,707
Consumer:
Residential mortgage:
Single-family residential	12,771,661		24,141		15,972		40,113		24,784		12,836,558
HELOCs	1,746,841		10,416		6,206		16,622		13,202		1,776,665
Total residential mortgage	14,518,502		34,557		22,178		56,735		37,986		14,613,223
Other consumer	63,992		109		17		126		136		64,254
Total consumer	14,582,494		34,666		22,195		56,861		38,122		14,677,477
Total	$	50,709,575	$	70,959	$	22,950	$	93,909	$	103,700	$	50,907,184

	December 31, 2022
($ in thousands)	Current Accruing Loans		Accruing Loans 30-59 Days Past Due		Accruing Loans 60-89 Days Past Due		Total Accruing Past Due Loans		Total Nonaccrual Loans		Total Loans
Commercial:
C&I	$	15,651,312	$	6,482	$	2,873	$	9,355	$	50,428	$	15,711,095
CRE:
CRE	13,820,441		14,185		—		14,185		23,244		13,857,870
Multifamily residential	4,571,899		678		322		1,000		169		4,573,068
Construction and land	638,420		—		—		—		—		638,420
Total CRE	19,030,760		14,863		322		15,185		23,413		19,069,358
Total commercial	34,682,072		21,345		3,195		24,540		73,841		34,780,453
Consumer:
Residential mortgage:
Single-family residential	11,183,134		13,523		12,130		25,653		14,240		11,223,027
HELOCs	2,102,523		7,700		1,086		8,786		11,346		2,122,655
Total residential mortgage	13,285,657		21,223		13,216		34,439		25,586		13,345,682
Other consumer	73,004		109		3,083		3,192		99		76,295
Total consumer	13,358,661		21,332		16,299		37,631		25,685		13,421,977
Total	$	48,040,733	$	42,677	$	19,494	$	62,171	$	99,526	$	48,202,430

Schedule Of Amortized Cost Of Loans On Nonaccrual Status With No Related Allowance For Loan Losses

The following table presents the amortized cost of loans on nonaccrual status for which there was no related allowance for loan losses as of both September 30, 2023 and December 31, 2022. Nonaccrual loans may not have an allowance for credit losses if the loan balances are well-secured by the collateral value and there is no loss expectation.

($ in thousands)	September 30, 2023		December 31, 2022
Commercial:
C&I	$	29,336	$	11,398
CRE	—		22,944
Multifamily residential	4,235		—
Construction and land	11,141		—
Total commercial	44,712		34,342
Consumer:
Single-family residential	6,681		2,998
HELOCs	8,483		7,245
Total consumer	15,164		10,243
Total nonaccrual loans with no related allowance for loan losses	$	59,876	$	44,585

Summary Of Modified Loans/TDRs

The following tables present the amortized cost of loans that were modified during the three and nine months ended September 30, 2023 by loan class and modification type:

	Three Months Ended September 30, 2023
	Modification Type
($ in thousands)	Term Extension		Payment Delay		Combination: Term Extension/ Payment Delay		Combination: Rate Reduction/ Term Extension		Combination: Rate Reduction/ Payment Delay		Total		Modification as a % of Loan Class
Commercial:
C&I	$	1,682	$	11,603	$	—	$	—	$	—	$	13,285	0.08	%
CRE:
CRE	13,469		—		—		—		—		13,469		0.07	%
Total commercial	15,151		11,603		—		—		—		26,754
Consumer:
Residential mortgage:
Single-family residential:	—		2,944		1,260		—		—		4,204		0.03	%
HELOCs	—		—		334		—		183		517		0.03	%
Total consumer	—		2,944		1,594		—		183		4,721
Total	$	15,151	$	14,547	$	1,594	$	—	$	183	$	31,475

	Nine Months Ended September 30, 2023
	Modification Type
($ in thousands)	Term Extension		Payment Delay		Combination: Term Extension/ Payment Delay		Combination: Rate Reduction/ Term Extension		Combination: Rate Reduction/ Payment Delay		Total		Modification as a % of Loan Class
Commercial:
C&I	$	44,120	$	20,793	$	—	$	—	$	—	$	64,913	0.41	%
CRE:
CRE	13,979		—		—		32,724		—		46,703		0.23	%
Total commercial	58,099		20,793		—		32,724		—		111,616
Consumer:
Residential mortgage:
Single-family residential:	—		7,276		1,809		—		—		9,085		0.07	%
HELOCs	—		741		1,053		—		183		1,977		0.11	%
Total consumer	—		8,017		2,862		—		183		11,062
Total	$	58,099	$	28,810	$	2,862	$	32,724	$	183	$	122,678

The following tables present the financial effects of the loan modifications for the three and nine months ended September 30, 2023 by loan class and modification type:

	Financial Effects of Loan Modifications
	Three Months Ended September 30, 2023
($ in thousands)	Principal Forgiveness		Weighted-Average Interest Rate Reduction		Weighted-Average Term Extension (in years)	Weighted-Average Payment Delay (in years)
Commercial:
C&I	$	26	—	%	3.00	1.54
CRE	—		—	%	1.08	—
Consumer:
Single-family residential	—		—	%	10.00	0.96
HELOCs	—		0.50	%	16.68	0.71
Total	$	26

	Financial Effects of Loan Modifications
	Nine months ended September 30, 2023
($ in thousands)	Principal Forgiveness			Weighted-Average Interest Rate Reduction			Weighted-Average Term Extension (in years)	Weighted-Average Payment Delay (in years)
Commercial:
C&I	$	371	(1)	—	%	(1)	1.41	1.15
CRE	—			3.00	%		2.09	—
Consumer:
Single-family residential	—			—	%		9.91	0.95
HELOCs	—			0.50	%		15.36	0.52
Total	$	371

(1)Comprised of C&I loans modified during the nine months ended September 30, 2023 where the interest rate is waived in addition to principal forgiveness. No recorded investment was outstanding as of September 30, 2023.

The following table presents the additions to TDRs for the three and nine months ended September 30, 2022:

	Loans Modified as TDRs
	Three Months Ended September 30, 2022							Nine Months Ended September 30, 2022
($ in thousands)	Number of Loans	Pre-Modification Outstanding Recorded Investment		Post-Modification Outstanding Recorded Investment (1)		Financial Impact (2)		Number of Loans	Pre-Modification Outstanding Recorded Investment		Post-Modification Outstanding Recorded Investment (1)		Financial Impact (2)
Commercial:
C&I	1	$	499	$	496	$	98	4	$	30,633	$	17,802	$	16,729
Total commercial	1	499		496		98		4	30,633		17,802		16,729
Consumer:
Residential mortgage:
HELOCs	1	62		69		2		1	62		69		2
Total residential mortgage	1	62		69		2		1	62		69		2
Total consumer	1	62		69		2		1	62		69		2
Total	2	$	561	$	565	$	100	5	$	30,695	$	17,871	$	16,731

(1)Includes subsequent payments after modification and reflects the balance as of September 30, 2022.

(2)Includes charge-offs since the modification date.

The following table presents the TDR post-modification outstanding balances by the primary modification type for the three and nine months ended September 30, 2022:

	Modification Type
	Three Months Ended September 30, 2022						Nine Months Ended September 30, 2022
($ in thousands)	Principal		Other		Total		Principal (1)		Other (2)		Total
Commercial:
C&I	$	496	$	—	$	496	$	9,609	$	8,193	$	17,802
Total commercial	496		—		496		9,609		8,193		17,802
Consumer:
Residential mortgage:
HELOCs	69		—		69		69		—		69
Total residential mortgage	69		—		69		69		—		69
Total consumer	69		—		69		69		—		69
Total	$	565	$	—	$	565	$	9,678	$	8,193	$	17,871

(1)Includes principal deferments that modify the terms of the loan from principal and interest payments to interest payments only.

(2)Includes increase in new commitments.

Financing Receivable, Modified, Payment Performance

The Company closely monitors the performance of modified loans to borrowers experiencing financial difficulty to understand the effectiveness of its modification efforts. The following table presents the performance of loans that were modified as of September 30, 2023 since the adoption of ASU 2022-02 on January 1, 2023.

	Payment Performance as of September 30, 2023
($ in thousands)	Current		30 - 89 Days Past Due		90+ Days Past Due		Total
Commercial:
C&I	$	58,481	$	—	$	6,432	$	64,913
CRE:
CRE	46,703		—		—		46,703
Total commercial	105,184		—		6,432		111,616
Consumer:
Residential mortgage:
Single-family residential	7,430		1,190		465		9,085
HELOCs	1,236		741		—		1,977
Total consumer	8,666		1,931		465		11,062
Total	$	113,850	$	1,931	$	6,897	$	122,678

Financing Receivable, Modified, Subsequent Default

The following table presents information on loans that entered into default during the three and nine months ended September 30, 2022 that were modified as TDRs during the 12 months preceding payment default:

	Loan Modified as TDRs that Subsequently Defaulted
	Three Months Ended September 30, 2022			Nine Months Ended September 30, 2022
($ in thousands)	Number of Loans	Recorded Investment		Number of Loans	Recorded Investment
Commercial:
C&I	—	$	—	2	$	13,901
CRE:
Multifamily residential	—	—		1	1,008
Total CRE	—	—		1	1,008
Total commercial	—	—		3	14,909
Total	—	$	—	3	$	14,909

Financing Receivable Credit Quality Indicators, Key Credit Risk Characteristics and Macroeconomic Variables

The following table provides key credit risk characteristics and macroeconomic variables that the Company uses to estimate the expected credit losses by portfolio segment:

Portfolio Segment	Risk Characteristics	Macroeconomic Variables
C&I	Age percentage, size at origination, delinquency status, sector and risk rating	Unemployment rate, Gross Domestic Product (“GDP”), and Two-Ten treasury spread (1)
CRE, Multifamily residential, and Construction and land	Delinquency status, maturity date, collateral value, property type, and geographic location	Unemployment rate, GDP, and U.S. Treasury rates
Single-family residential and HELOCs	FICO score, delinquency status, maturity date, collateral value, and geographic location	Unemployment rate, GDP, and home price index
Other consumer	Loss rate approach	Immaterial (2)

(1)Macroeconomic variables were updated due to model redevelopment.

(2)Macroeconomic variables are included in the qualitative estimate.

Summary Of Activity In The Allowance For Credit Losses

The following tables summarize the activity in the allowance for loan losses by portfolio segments for the three and nine months ended September 30, 2023 and 2022:

		Three Months Ended September 30, 2023
		Commercial								Consumer
				CRE						Residential Mortgage
($ in thousands)		C&I		CRE		Multifamily Residential		Construction and Land		Single-Family Residential		HELOCs		Other Consumer		Total
Allowance for loan losses, beginning of period		$	375,333	$	168,505	$	22,938	$	11,325	$	51,513	$	4,526	$	1,260	$	635,400
Provision for (reversal of) credit losses on loans	(a)	13,006		12,952		772		8,302		3,353		(705)		456		38,136
Gross charge-offs		(7,074)		(3,466)		—		(10,413)		—		(41)		(13)		(21,007)
Gross recoveries		2,279		49		452		2		64		15		—		2,861
Total net (charge-offs) recoveries		(4,795)		(3,417)		452		(10,411)		64		(26)		(13)		(18,146)
Foreign currency translation adjustment		133		—		—		—		—		—		—		133
Allowance for loan losses, end of period		$	383,677	$	178,040	$	24,162	$	9,216	$	54,930	$	3,795	$	1,703	$	655,523

		Three Months Ended September 30, 2022
		Commercial								Consumer
				CRE						Residential Mortgage
($ in thousands)		C&I		CRE		Multifamily Residential		Construction and Land		Single-Family Residential		HELOCs		Other Consumer		Total
Allowance for loan losses, beginning of period		$	363,282	$	140,245	$	26,552	$	6,682	$	21,840	$	3,220	$	1,449	$	563,270
Provision for credit losses on loans	(a)	9,575		5,299		5,047		817		6,182		99		255		27,274
Gross charge-offs		(6,894)		(288)		(5,938)		—		(775)		—		(10)		(13,905)
Gross recoveries		7,172		45		19		7		16		5		—		7,264
Total net recoveries (charge-offs)		278		(243)		(5,919)		7		(759)		5		(10)		(6,641)
Foreign currency translation adjustment		(1,386)		—		—		—		—		—		—		(1,386)
Allowance for loan losses, end of period		$	371,749	$	145,301	$	25,680	$	7,506	$	27,263	$	3,324	$	1,694	$	582,517

		Nine Months Ended September 30, 2023
		Commercial								Consumer
				CRE						Residential Mortgage
($ in thousands)		C&I		CRE		Multifamily Residential		Construction and Land		Single-Family Residential		HELOCs		Other Consumer		Total
Allowance for loan losses, December 31, 2022		$	371,700	$	149,864	$	23,373	$	9,109	$	35,564	$	4,475	$	1,560	$	595,645
Impact of ASU 2022-02 adoption		5,683		337		6		—		1		1		—		6,028
Allowance for loan losses, beginning of period		377,383		150,201		23,379		9,109		35,565		4,476		1,560		601,673
Provision for (reversal of) credit losses on loans	(a)	17,587		33,313		303		10,507		19,296		(569)		244		80,681
Gross charge-offs		(16,309)		(5,838)		—		(10,413)		—		(138)		(101)		(32,799)
Gross recoveries		5,555		364		480		13		69		26		—		6,507
Total net (charge-offs) recoveries		(10,754)		(5,474)		480		(10,400)		69		(112)		(101)		(26,292)
Foreign currency translation adjustment		(539)		—		—		—		—		—		—		(539)
Allowance for loan losses, end of period		$	383,677	$	178,040	$	24,162	$	9,216	$	54,930	$	3,795	$	1,703	$	655,523

		Nine Months Ended September 30, 2022
		Commercial								Consumer
				CRE						Residential Mortgage
($ in thousands)		C&I		CRE		Multifamily Residential		Construction and Land		Single-Family Residential		HELOCs		Other Consumer		Total
Allowance for loan losses, beginning of period		$	338,252	$	150,940	$	14,400	$	15,468	$	17,160	$	3,435	$	1,924	$	541,579
Provision for (reversal of) credit losses on loans	(a)	37,867		(5,013)		16,680		(8,027)		10,569		59		(140)		51,995
Gross charge-offs		(18,322)		(1,357)		(5,947)		—		(775)		(193)		(90)		(26,684)
Gross recoveries		16,688		731		547		65		309		23		—		18,363
Total net (charge-offs) recoveries		(1,634)		(626)		(5,400)		65		(466)		(170)		(90)		(8,321)
Foreign currency translation adjustment		(2,736)		—		—		—		—		—		—		(2,736)
Allowance for loan losses, end of period		$	371,749	$	145,301	$	25,680	$	7,506	$	27,263	$	3,324	$	1,694	$	582,517

The following table summarizes the activities in the allowance for unfunded credit commitments for the three and nine months ended September 30, 2023 and 2022:

		Three Months Ended September 30,				Nine Months Ended September 30,
($ in thousands)		2023		2022		2023		2022
Unfunded credit facilities
Allowance for unfunded credit commitments, beginning of period		$	29,728	$	24,304	$	26,264	$	27,514
Provision for (reversal of) credit losses on unfunded credit commitments	(b)	3,864		(274)		7,319		(3,495)
Foreign currency translation adjustment		(3)		11		6		22
Allowance for unfunded credit commitments, end of period		$	33,589	$	24,041	$	33,589	$	24,041
Provision for credit losses	(a) + (b)	$	42,000	$	27,000	$	88,000	$	48,500

Schedule Of Carrying Value Of Loans Transferred, Loans Sold and Purchased For the Held-For-Investment Portfolio

The following tables provide information on the carrying value of loans transferred, sold and purchased for the held-for-investment portfolio, during the three and nine months ended September 30, 2023 and 2022:

	Three Months Ended September 30, 2023
	Commercial						Consumer
			CRE				Residential Mortgage
($ in thousands)	C&I		CRE		Construction and Land		Single-Family Residential		Total
Loans transferred from held-for-investment to held-for-sale (1)	$	201,299	$	25,890	$	—	$	—	$	227,189
Sales (2)(3)	$	199,511	$	29,357	$	—	$	—	$	228,868
Purchases (4)	$	19,588	$	—	$	—	$	140,771	$	160,359

	Three Months Ended September 30, 2022
	Commercial						Consumer
			CRE				Residential Mortgage
($ in thousands)	C&I		CRE		Multifamily Residential		Single-Family Residential		Total
Loans transferred from held-for-investment to held-for-sale (1)	$	59,069	$	33,616	$	14,500	$	5,178	$	112,363
Sales (2)(3)	$	87,597	$	33,616	$	—	$	5,952	$	127,165
Purchases (4)	$	56,507	$	—	$	—	$	1,155	$	57,662

	Nine Months Ended September 30, 2023
	Commercial						Consumer
			CRE				Residential Mortgage
($ in thousands)	C&I		CRE		Construction and Land		Single-Family Residential		Total
Loans transferred from held-for-investment to held-for-sale (1)	$	469,571	$	29,490	$	8,154	$	—	$	507,215
Sales (2)(3)	$	491,178	$	32,957	$	8,154	$	—	$	532,289
Purchases (4)	$	80,550	$	—	$	—	$	351,880	$	432,430

	Nine Months Ended September 30, 2022
	Commercial						Consumer
			CRE				Residential Mortgage
($ in thousands)	C&I		CRE		Multifamily Residential		Single-Family Residential		Total
Loans transferred from held-for-investment to held-for-sale (1)	$	378,841	$	65,250	$	14,500	$	5,178	$	463,769
Loans transferred from held-for-sale to held-for-investment	$	—	$	—	$	—	$	631	$	631
Sales (2)(3)	$	375,100	$	65,250	$	—	$	6,403	$	446,753
Purchases (4)	$	361,169	$	—	$	—	$	238,253	$	599,422

(1)Includes write-downs of $3.6 million and $4.2 million to the allowance for loan losses related to loans transferred from held-for-investment to held-for-sale for the three and nine months ended September 30, 2023, respectively, and $8.7 million and $8.9 million for the three and nine months ended September 30, 2022, respectively.

(2)Includes originated loans sold of $204.1 million and $407.3 million for the three and nine months ended September 30, 2023, respectively, and $86.2 million and $253.9 million for the three and nine months ended September 30, 2022, respectively. Originated loans sold consisted primarily of C&I loans for each of the three and nine months ended September 30, 2023, and C&I and CRE loans for each of the three and nine months ended September 30, 2022.

(3)Includes $24.7 million and $125.0 million of purchased loans sold in the secondary market for the three and nine months ended September 30, 2023, respectively, and $40.9 million and $192.9 million for the three and nine months ended September 30, 2022, respectively.

(4)C&I loan purchases were comprised primarily of syndicated C&I term loans.

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Investments in Qualified Affordable Housing Partnerships, Tax Credit and Other Investments, Net and Variable Interest Entities (Tables)

9 Months Ended

Sep. 30, 2023

Investments in Qualified Affordable Housing Partnerships, Tax Credit and Other Investments, Net and Variable Interest Entities [Abstract]

Schedule of Investment in Affordable Housing and Tax Credit and Other Investments, Net and Related Unfunded Commitments

The following table presents investments and unfunded commitments of the Company’s qualified affordable housing partnerships, tax credit, and other investments as of September 30, 2023 and December 31, 2022:

	September 30, 2023				December 31, 2022
($ in thousands)	Assets		Liabilities - Unfunded Commitments (1)		Assets		Liabilities - Unfunded Commitments (1)
Investments in qualified affordable housing partnerships, net	$	412,004	$	252,552	$	413,253	$	266,654
Investments in tax credit and other investments, net	489,555		345,072		350,003		185,797
Total	$	901,559	$	597,624	$	763,256	$	452,451

(1)Included in Accrued expenses and other liabilities on the Consolidated Balance Sheet.

Schedule of Additional Information related to the Investments in Affordable Housing and Tax Credit and Other Investments

The following table presents additional information related to the investments in qualified affordable housing partnerships, tax credit and other investments for the three and nine months ended September 30, 2023 and 2022:

	Three Months Ended September 30,				Nine Months Ended September 30,
($ in thousands)	2023		2022		2023		2022
Investments in qualified housing partnerships, net:
Tax credits and other tax benefits recognized	$	15,660	$	13,180	$	47,058	$	38,764
Amortization expense included in income tax expense	$	11,587	$	10,431	$	34,759	$	30,498
Investments in tax credit and other investments, net:
Amortization of tax credit and other investments (1)	$	49,694	$	19,874	$	115,718	$	48,753
Unrealized losses on equity securities with readily determinable values	$	(674)	$	(1,014)	$	(682)	$	(2,958)

(1)Includes net impairment losses of $790 thousand for the three months ended September 30, 2023, and net impairment recoveries of $831 thousand for the nine months ended September 30, 2023. The activity for both periods was primarily related to historic tax credits. In comparison, there were no impairment recoveries or losses for three or nine months ended September 30, 2022.

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Short-Term Borrowings and Long-Term Debt (Tables)

9 Months Ended

Sep. 30, 2023

Debt Disclosure [Abstract]

Schedule of Short-Term Borrowings

The following table presents details of the Company’s short-term borrowings as of September 30, 2023.

			September 30, 2023
($ in thousands)	Interest Rate	Maturity Date	Amount
Short-term borrowings	4.37%	3/19/2024	$	4,500,000

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Commitments and Contingencies (Tables)

9 Months Ended

Sep. 30, 2023

Commitments and Contingencies Disclosure [Abstract]

Schedule of Credit-Related Commitments

The following table presents the Company’s credit-related commitments as of September 30, 2023 and December 31, 2022:

	September 30, 2023										December 31, 2022
($ in thousands)	Expire in One Year or Less		Expire After One Year Through Three Years		Expire After Three Years Through Five Years		Expire After Five Years		Total		Total
Loan commitments	$	4,650,619	$	3,689,245	$	1,037,254	$	139,325	$	9,516,443	$	8,211,571
Commercial letters of credit and SBLCs	875,757		405,377		122,255		1,124,405		2,527,794		2,291,966
Total	$	5,526,376	$	4,094,622	$	1,159,509	$	1,263,730	$	12,044,237	$	10,503,537

Schedule of Guarantees Outstanding

The following table presents the carrying amounts of loans sold or securitized with recourse and the maximum potential future payments as of September 30, 2023 and December 31, 2022:

	Maximum Potential Future Payments												Carrying Value
	September 30, 2023										December 31, 2022		September 30, 2023		December 31, 2022
($ in thousands)	Expire in One Year or Less		Expire After One Year Through Three Years		Expire After Three Years Through Five Years		Expire After Five Years		Total		Total		Total		Total
Single-family residential loans sold or securitized with recourse	$	28	$	23	$	28	$	6,013	$	6,092	$	6,781	$	6,092	$	6,781
Multifamily residential loans sold or securitized with recourse	—		—		66		14,930		14,996		14,996		19,887		21,320
Total	$	28	$	23	$	94	$	20,943	$	21,088	$	21,777	$	25,979	$	28,101

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Stock Compensation Plans (Tables)

9 Months Ended

Sep. 30, 2023

Share-Based Payment Arrangement [Abstract]

Summary of Stock Compensation Expense and Related Net Tax (Deficiency) Benefit

The following table presents a summary of the total share-based compensation expense and the related net tax (deficiencies) benefits associated with the Company’s various employee share-based compensation plans for the three and nine months ended September 30, 2023 and 2022:

	Three Months Ended September 30,				Nine Months Ended September 30,
($ in thousands)	2023		2022		2023		2022
Stock compensation costs	$	9,495	$	12,329	$	29,934	$	29,338
Related net tax (deficiencies) benefits for stock compensation plans	$	(18)	$	1	$	8,797	$	5,269

Summary of Activity for Time-Based and Performance-Based Restricted Stock Units

The following table presents a summary of the activities for the Company’s time-based and performance-based RSUs that will be settled in shares for the nine months ended September 30, 2023. The number of performance-based RSUs stated below reflects the number of awards granted on the grant date.

	Time-Based RSUs			Performance-Based RSUs
	Shares	Weighted-Average Grant Date Fair Value		Shares	Weighted-Average Grant Date Fair Value
Outstanding, January 1, 2023	1,296,866	$	60.77	332,510	$	60.40
Granted	500,180	73.73		96,271	57.50
Vested	(522,029)	40.79		(152,558)	39.39
Forfeited	(53,379)	74.00		—	—
Outstanding, September 30, 2023	1,221,638	$	74.04	276,223	$	70.99

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Stockholders' Equity and Earnings Per Share (Tables)

9 Months Ended

Sep. 30, 2023

Stockholders' Equity and Earnings Per Share [Abstract]

Schedule of Earnings Per Share Calculations

The following table presents the basic and diluted EPS calculations for the three and nine months ended September 30, 2023 and 2022. For more information on the calculation of EPS, see Note 1 — Summary of Significant Accounting Policies — Significant Accounting Policies — Earnings Per Share to the Consolidated Financial Statements in the Company’s 2022 Form 10-K.

($ and shares in thousands, except per share data)	Three Months Ended September 30,				Nine Months Ended September 30,
	2023		2022		2023		2022
Basic:
Net income	$	287,738	$	295,339	$	922,208	$	791,320
Weighted-average number of shares outstanding	141,485		140,917		141,356		141,453
Basic EPS	$	2.03	$	2.10	$	6.52	$	5.59
Diluted:
Net income	$	287,738	$	295,339	$	922,208	$	791,320
Weighted-average number of shares outstanding	141,485		140,917		141,356		141,453
Add: Dilutive impact of unvested RSUs	637		1,094		688		1,148
Diluted weighted-average number of shares outstanding	142,122		142,011		142,044		142,601
Diluted EPS	$	2.02	$	2.08	$	6.49	$	5.55

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Accumulated Other Comprehensive Income (Loss) (Tables)

9 Months Ended

Sep. 30, 2023

Equity [Abstract]

Schedule Of The Changes In Components Of Accumulated Other Comprehensive Income (Loss) Balances

The following tables present the changes in the components of AOCI balances for the three and nine months ended September 30, 2023 and 2022:

($ in thousands)	Debt Securities (1)		Cash Flow Hedges		Foreign Currency Translation Adjustments (2)		Total
Balance, July 1, 2022	$	(554,781)	$	(30,846)	$	(15,021)	$	(600,648)
Net unrealized losses arising during the period	(161,445)		(34,423)		(7,926)		(203,794)
Amounts reclassified from AOCI	3,256		1,154		—		4,410
Changes, net of tax	(158,189)		(33,269)		(7,926)		(199,384)
Balance, September 30, 2022	$	(712,970)	$	(64,115)	$	(22,947)	$	(800,032)
Balance, July 1, 2023	$	(681,536)	$	(74,805)	$	(25,591)	$	(781,932)
Net unrealized (losses) gains arising during the period	(72,691)		(44,347)		3,710		(113,328)
Amounts reclassified from AOCI	2,870		17,013		—		19,883
Changes, net of tax	(69,821)		(27,334)		3,710		(93,445)
Balance, September 30, 2023	$	(751,357)	$	(102,139)	$	(21,881)	$	(875,377)

($ in thousands)	Debt Securities (1)		Cash Flow Hedges		Foreign Currency Translation Adjustments (2)		Total
Balance, January 1, 2022	$	(85,703)	$	257	$	(4,935)	$	(90,381)
Net unrealized losses arising during the period	(635,664)		(63,232)		(18,012)		(716,908)
Amounts reclassified from AOCI	8,397		(1,140)		—		7,257
Changes, net of tax	(627,267)		(64,372)		(18,012)		(709,651)
Balance, September 30, 2022	$	(712,970)	$	(64,115)	$	(22,947)	$	(800,032)
Balance, January 1, 2023	$	(694,815)	$	(49,531)	$	(21,283)	$	(765,629)
Net unrealized losses arising during the period	(72,034)		(91,468)		(598)		(164,100)
Amounts reclassified from AOCI	15,492		38,860		—		54,352
Changes, net of tax	(56,542)		(52,608)		(598)		(109,748)
Balance, September 30, 2023	$	(751,357)	$	(102,139)	$	(21,881)	$	(875,377)

(1)Includes after-tax unamortized losses related to AFS debt securities that were transferred to HTM in 2022.

(2)Represents foreign currency translation adjustments related to the Company’s net investment in non-U.S. operations, including related hedges. The functional currency and reporting currency of the Company’s foreign subsidiary is RMB and USD, respectively.

Schedule Of Components Of Other Comprehensive Income (Loss), Reclassifications To Net Income And The Related Tax Effects

The following tables present the components of other comprehensive income (loss), reclassifications to net income and the related tax effects for the three and nine months ended September 30, 2023 and 2022:

	Three Months Ended September 30,
	2023						2022
($ in thousands)	Before-Tax		Tax Effect		Net-of-Tax		Before-Tax		Tax Effect		Net-of-Tax
Debt securities:
Net unrealized losses on AFS debt securities arising during the period	$	(103,183)	$	30,492	$	(72,691)	$	(229,246)	$	67,801	$	(161,445)
Reclassification adjustments:
Amortization of unrealized losses on transferred debt securities (1)	4,075		(1,205)		2,870		4,623		(1,367)		3,256
Net change	(99,108)		29,287		(69,821)		(224,623)		66,434		(158,189)
Cash flow hedges:
Net unrealized losses arising during the period	(62,715)		18,368		(44,347)		(48,325)		13,902		(34,423)
Net realized losses reclassified into net income (2)	24,059		(7,046)		17,013		1,619		(465)		1,154
Net change	(38,656)		11,322		(27,334)		(46,706)		13,437		(33,269)
Foreign currency translation adjustments, net of hedges:
Net unrealized gains (losses) arising during the period	3,728		(18)		3,710		(6,676)		(1,250)		(7,926)
Net change	3,728		(18)		3,710		(6,676)		(1,250)		(7,926)
Other comprehensive loss	$	(134,036)	$	40,591	$	(93,445)	$	(278,005)	$	78,621	$	(199,384)

	Nine Months Ended September 30,
	2023							2022
($ in thousands)	Before-Tax			Tax Effect		Net-of-Tax		Before-Tax		Tax Effect		Net-of-Tax
Debt securities:
Net unrealized losses on AFS debt securities arising during the period	$	(102,262)		$	30,228	$	(72,034)	$	(742,132)	$	219,459	$	(522,673)
Unrealized losses on debt securities transferred from AFS to HTM	—			—		—		(160,416)		47,425		(112,991)
Reclassification adjustments:
Net realized losses (gains) on AFS debt securities reclassified into net income (3)	10,000		(4)	(2,956)		7,044		(1,306)		386		(920)
Amortization of unrealized losses on transferred debt securities (1)	11,994			(3,546)		8,448		13,228		(3,911)		9,317
Net change	(80,268)			23,726		(56,542)		(890,626)		263,359		(627,267)
Cash flow hedges:
Net unrealized losses arising during the period	(129,329)			37,861		(91,468)		(88,771)		25,539		(63,232)
Net realized losses (gains) reclassified into net income (2)	54,955			(16,095)		38,860		(1,601)		461		(1,140)
Net change	(74,374)			21,766		(52,608)		(90,372)		26,000		(64,372)
Foreign currency translation adjustments, net of hedges:
Net unrealized gains (losses) arising during the period	247			(845)		(598)		(16,276)		(1,736)		(18,012)
Net change	247			(845)		(598)		(16,276)		(1,736)		(18,012)
Other comprehensive loss	$	(154,395)		$	44,647	$	(109,748)	$	(997,274)	$	287,623	$	(709,651)

(1)Represents unrealized losses amortized over the remaining lives of securities that were transferred from the AFS to HTM portfolio in 2022.

(2)Pre-tax amounts related to cash flow hedges on variable rate loans and long-term borrowings, where applicable, were reported in Interest and dividend income and in Interest expense, respectively, on the Consolidated Statement of Income.

(3)Pre-tax amounts were reported in Net (losses) gains on AFS debt securities on the Consolidated Statement of Income.

(4)Represents the full write-off of an impaired subordinated debt security during the first quarter of 2023.

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Business Segments (Tables)

9 Months Ended

Sep. 30, 2023

Segment Reporting [Abstract]

Schedule Of Operating Results And Other Key Financial Measures For The Individual Operating Segments

The following tables present the operating results and other key financial measures for the individual operating segments as of and for the three and nine months ended September 30, 2023 and 2022:

($ in thousands)	Consumer and Business Banking		Commercial Banking		Other		Total
Three Months Ended September 30, 2023
Net interest income before provision for credit losses	$	315,409	$	242,345	$	13,059	$	570,813
Provision for credit losses	1,633		40,367		—		42,000
Noninterest income	25,132		43,672		7,948		76,752
Noninterest expense	106,626		87,556		57,832		252,014
Segment income (loss) before income taxes	232,282		158,094		(36,825)		353,551
Segment net income	$	164,051	$	110,182	$	13,505	$	287,738
As of September 30, 2023
Segment assets	$	18,935,452	$	34,438,787	$	14,915,219	$	68,289,458

($ in thousands)	Consumer and Business Banking		Commercial Banking		Other		Total
Three Months Ended September 30, 2022
Net interest income before provision for credit losses	$	326,411	$	222,996	$	2,402	$	551,809
Provision for credit losses	8,974		18,026		—		27,000
Noninterest income (loss)	30,819		48,641		(3,908)		75,552
Noninterest expense	104,005		81,386		30,582		215,973
Segment income (loss) before income taxes	244,251		172,225		(32,088)		384,388
Segment net income (loss)	$	173,982	$	122,869	$	(1,512)	$	295,339
As of September 30, 2022
Segment assets	$	17,002,000	$	32,836,381	$	12,737,680	$	62,576,061

($ in thousands)	Consumer and Business Banking		Commercial Banking		Other		Total
Nine Months Ended September 30, 2023
Net interest income before provision for credit losses	$	927,173	$	742,108	$	68,139	$	1,737,420
Provision for credit losses	22,169		65,831		—		88,000
Noninterest income	78,254		129,809		7,298		215,361
Noninterest expense	327,476		263,137		141,637		732,250
Segment income (loss) before income taxes	655,782		542,949		(66,200)		1,132,531
Segment net income	$	463,151	$	383,669	$	75,388	$	922,208
As of September 30, 2023
Segment assets	$	18,935,452	$	34,438,787	$	14,915,219	$	68,289,458

($ in thousands)	Consumer and Business Banking		Commercial Banking		Other		Total
Nine Months Ended September 30, 2022
Net interest income (loss) before provision for credit losses	$	823,998	$	662,037	$	(45,661)	$	1,440,374
Provision for credit losses	14,976		33,524		—		48,500
Noninterest income	84,402		145,750		3,587		233,739
Noninterest expense	294,395		235,804		72,084		602,283
Segment income (loss) before income taxes	599,029		538,459		(114,158)		1,023,330
Segment net income (loss)	$	426,695	$	384,237	$	(19,612)	$	791,320
As of September 30, 2022
Segment assets	$	17,002,000	$	32,836,381	$	12,737,680	$	62,576,061

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Basis of Presentation (Details)	Sep. 30, 2023 trust
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Number of wholly-owned subsidiaries that are statutory business trusts (the Trusts)	6

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Current Accounting Developments and Summary of Significant Accounting Policies (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Jun. 30, 2023	Jan. 01, 2023	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Dec. 31, 2021
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Allowance for loan losses	$ 655,523	$ 635,400	$ 601,673	$ 595,645	$ 582,517	$ 563,270	$ 541,579
Retained earnings	$ (6,294,751)			(5,582,546)
Accounting Standards Update 2022-02
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Allowance for loan losses				$ (6,000)
Retained earnings			$ (4,300)

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Fair Value Measurement and Fair Value of Financial Instruments - Narrative (Details)	Sep. 30, 2023
Rayliant Global Advisors Limited
Schedule of Equity Method Investments [Line Items]
Equity method investment, ownership (percent)	49.99%

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Fair Value Measurement and Fair Value of Financial Instruments - Financial Assets and Liabilities Measurement on Recurring Basis (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Investments in qualified affordable housing partnerships, tax credit and other investments, net:
Total investments in qualified affordable housing partnerships, tax credit and other investments, net	$ 901,559	$ 763,256
Derivative
Derivative assets - Fair value	862,316	755,328
Net derivative assets	331,985	140,545
Derivative liabilities - Fair value	948,387	887,264
Net derivative liabilities	685,514	644,519
Fair Value, Measurements, Recurring
Available-for-sale debt securities
Fair Value	6,039,837	6,034,993
Investments in qualified affordable housing partnerships, tax credit and other investments, net:
Equity securities	23,601	23,954
Total investments in qualified affordable housing partnerships, tax credit and other investments, net	23,601	23,954
Derivative
Derivative assets - Fair value	862,316	755,328
Netting adjustments	(530,331)	(614,783)
Net derivative assets	331,985	140,545
Derivative liabilities - Fair value	948,387	887,264
Netting adjustments	(262,873)	(242,745)
Net derivative liabilities	685,514	644,519
Fair Value, Measurements, Recurring | Interest rate contracts
Derivative
Derivative assets - Fair value	624,087	440,283
Derivative liabilities - Fair value	712,302	584,516
Fair Value, Measurements, Recurring | Foreign exchange contracts
Derivative
Derivative assets - Fair value	100,377	53,109
Derivative liabilities - Fair value	77,099	44,117
Fair Value, Measurements, Recurring | Equity contracts
Derivative
Derivative assets - Fair value	352	323
Derivative liabilities - Fair value	15,119
Fair Value, Measurements, Recurring | Commodity contracts
Derivative
Derivative assets - Fair value	137,500	261,613
Derivative liabilities - Fair value	143,855	258,608
Fair Value, Measurements, Recurring | Credit contracts
Derivative
Derivative liabilities - Fair value	12	23
Fair Value, Measurements, Recurring | U.S. Treasury securities
Available-for-sale debt securities
Fair Value	904,101	606,203
Fair Value, Measurements, Recurring | U.S. government agency and U.S. government-sponsored enterprise debt securities
Available-for-sale debt securities
Fair Value	447,464	461,607
Fair Value, Measurements, Recurring | U.S. government agency and U.S. government-sponsored enterprise mortgage-backed securities - Commercial mortgage-backed securities
Available-for-sale debt securities
Fair Value	462,332	500,269
Fair Value, Measurements, Recurring | U.S. government agency and U.S. government-sponsored enterprise mortgage-backed securities - Residential mortgage-backed securities
Available-for-sale debt securities
Fair Value	1,694,342	1,762,195
Fair Value, Measurements, Recurring | Municipal securities
Available-for-sale debt securities
Fair Value	243,556	257,099
Fair Value, Measurements, Recurring | Non-agency commercial mortgage-backed securities
Available-for-sale debt securities
Fair Value	365,320	398,329
Fair Value, Measurements, Recurring | Non-agency residential mortgage-backed securities
Available-for-sale debt securities
Fair Value	570,787	649,224
Fair Value, Measurements, Recurring | Corporate debt securities
Available-for-sale debt securities
Fair Value	475,434	526,274
Fair Value, Measurements, Recurring | Foreign government bonds
Available-for-sale debt securities
Fair Value	222,790	227,053
Fair Value, Measurements, Recurring | Asset-backed securities
Available-for-sale debt securities
Fair Value	43,757	49,076
Fair Value, Measurements, Recurring | Collateralized loan obligations (“CLOs”)
Available-for-sale debt securities
Fair Value	609,954	597,664
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1)
Available-for-sale debt securities
Fair Value	904,101	606,203
Investments in qualified affordable housing partnerships, tax credit and other investments, net:
Equity securities	19,447	19,777
Total investments in qualified affordable housing partnerships, tax credit and other investments, net	19,447	19,777
Derivative
Derivative assets - Fair value	0	0
Netting adjustments	0	0
Net derivative assets	0	0
Derivative liabilities - Fair value	0	0
Netting adjustments	0	0
Net derivative liabilities	0	0
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Interest rate contracts
Derivative
Derivative assets - Fair value	0	0
Derivative liabilities - Fair value	0	0
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Foreign exchange contracts
Derivative
Derivative assets - Fair value	0	0
Derivative liabilities - Fair value	0	0
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Equity contracts
Derivative
Derivative assets - Fair value	0	0
Derivative liabilities - Fair value	0
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Commodity contracts
Derivative
Derivative assets - Fair value	0	0
Derivative liabilities - Fair value	0	0
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Credit contracts
Derivative
Derivative liabilities - Fair value	0	0
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | U.S. Treasury securities
Available-for-sale debt securities
Fair Value	904,101	606,203
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | U.S. government agency and U.S. government-sponsored enterprise debt securities
Available-for-sale debt securities
Fair Value	0	0
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | U.S. government agency and U.S. government-sponsored enterprise mortgage-backed securities - Commercial mortgage-backed securities
Available-for-sale debt securities
Fair Value	0	0
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | U.S. government agency and U.S. government-sponsored enterprise mortgage-backed securities - Residential mortgage-backed securities
Available-for-sale debt securities
Fair Value	0	0
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Municipal securities
Available-for-sale debt securities
Fair Value	0	0
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Non-agency commercial mortgage-backed securities
Available-for-sale debt securities
Fair Value	0	0
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Non-agency residential mortgage-backed securities
Available-for-sale debt securities
Fair Value	0	0
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Corporate debt securities
Available-for-sale debt securities
Fair Value	0	0
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Foreign government bonds
Available-for-sale debt securities
Fair Value	0	0
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Asset-backed securities
Available-for-sale debt securities
Fair Value	0	0
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Collateralized loan obligations (“CLOs”)
Available-for-sale debt securities
Fair Value	0	0
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2)
Available-for-sale debt securities
Fair Value	5,135,736	5,428,790
Investments in qualified affordable housing partnerships, tax credit and other investments, net:
Equity securities	4,154	4,177
Total investments in qualified affordable housing partnerships, tax credit and other investments, net	4,154	4,177
Derivative
Derivative assets - Fair value	861,964	755,005
Netting adjustments	(530,331)	(614,783)
Net derivative assets	331,633	140,222
Derivative liabilities - Fair value	933,268	887,264
Netting adjustments	(262,873)	(242,745)
Net derivative liabilities	670,395	644,519
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Interest rate contracts
Derivative
Derivative assets - Fair value	624,087	440,283
Derivative liabilities - Fair value	712,302	584,516
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Foreign exchange contracts
Derivative
Derivative assets - Fair value	100,377	53,109
Derivative liabilities - Fair value	77,099	44,117
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Equity contracts
Derivative
Derivative assets - Fair value	0	0
Derivative liabilities - Fair value	0
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Commodity contracts
Derivative
Derivative assets - Fair value	137,500	261,613
Derivative liabilities - Fair value	143,855	258,608
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Credit contracts
Derivative
Derivative liabilities - Fair value	12	23
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | U.S. Treasury securities
Available-for-sale debt securities
Fair Value	0	0
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | U.S. government agency and U.S. government-sponsored enterprise debt securities
Available-for-sale debt securities
Fair Value	447,464	461,607
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | U.S. government agency and U.S. government-sponsored enterprise mortgage-backed securities - Commercial mortgage-backed securities
Available-for-sale debt securities
Fair Value	462,332	500,269
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | U.S. government agency and U.S. government-sponsored enterprise mortgage-backed securities - Residential mortgage-backed securities
Available-for-sale debt securities
Fair Value	1,694,342	1,762,195
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Municipal securities
Available-for-sale debt securities
Fair Value	243,556	257,099
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Non-agency commercial mortgage-backed securities
Available-for-sale debt securities
Fair Value	365,320	398,329
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Non-agency residential mortgage-backed securities
Available-for-sale debt securities
Fair Value	570,787	649,224
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Corporate debt securities
Available-for-sale debt securities
Fair Value	475,434	526,274
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Foreign government bonds
Available-for-sale debt securities
Fair Value	222,790	227,053
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Asset-backed securities
Available-for-sale debt securities
Fair Value	43,757	49,076
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Collateralized loan obligations (“CLOs”)
Available-for-sale debt securities
Fair Value	609,954	597,664
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3)
Available-for-sale debt securities
Fair Value	0	0
Investments in qualified affordable housing partnerships, tax credit and other investments, net:
Equity securities	0	0
Total investments in qualified affordable housing partnerships, tax credit and other investments, net	0	0
Derivative
Derivative assets - Fair value	352	323
Netting adjustments	0	0
Net derivative assets	352	323
Derivative liabilities - Fair value	15,119	0
Netting adjustments	0	0
Net derivative liabilities	15,119	0
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) | Interest rate contracts
Derivative
Derivative assets - Fair value	0	0
Derivative liabilities - Fair value	0	0
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) | Foreign exchange contracts
Derivative
Derivative assets - Fair value	0	0
Derivative liabilities - Fair value	0	0
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) | Equity contracts
Derivative
Derivative assets - Fair value	352	323
Derivative liabilities - Fair value	15,119
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) | Commodity contracts
Derivative
Derivative assets - Fair value	0	0
Derivative liabilities - Fair value	0	0
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) | Credit contracts
Derivative
Derivative liabilities - Fair value	0	0
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) | U.S. Treasury securities
Available-for-sale debt securities
Fair Value	0	0
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) | U.S. government agency and U.S. government-sponsored enterprise debt securities
Available-for-sale debt securities
Fair Value	0	0
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) | U.S. government agency and U.S. government-sponsored enterprise mortgage-backed securities - Commercial mortgage-backed securities
Available-for-sale debt securities
Fair Value	0	0
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) | U.S. government agency and U.S. government-sponsored enterprise mortgage-backed securities - Residential mortgage-backed securities
Available-for-sale debt securities
Fair Value	0	0
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) | Municipal securities
Available-for-sale debt securities
Fair Value	0	0
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) | Non-agency commercial mortgage-backed securities
Available-for-sale debt securities
Fair Value	0	0
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) | Non-agency residential mortgage-backed securities
Available-for-sale debt securities
Fair Value	0	0
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) | Corporate debt securities
Available-for-sale debt securities
Fair Value	0	0
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) | Foreign government bonds
Available-for-sale debt securities
Fair Value	0	0
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) | Asset-backed securities
Available-for-sale debt securities
Fair Value	0	0
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) | Collateralized loan obligations (“CLOs”)
Available-for-sale debt securities
Fair Value	$ 0	$ 0

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Fair Value Measurement and Fair Value of Financial Instruments - Reconciliation of Assets and Liabilities Measured on Recurring Basis (Details) - Equity contracts - Level 3 - Fair Value, Measurements, Recurring - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Derivative assets:
Beginning balance	$ 263	$ 357	$ 323	$ 215
Total (losses) gains included in earnings	(3)	(12)	(63)	39
Issuances	92	0	92	91
Ending balance	352	345	352	345
Derivative liabilities:
Beginning balance	0	0	0	0
Issuances	15,119	0	15,119	0
Ending balance	$ 15,119	$ 0	$ 15,119	$ 0

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Fair Value Measurement and Fair Value of Financial Instruments - Quantitative Information for Significant Unobservable Inputs (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Derivative Assets
Derivative assets - Fair value	$ 862,316	$ 755,328
Derivative Liabilities
Derivative liabilities - Fair value	948,387	887,264
Fair Value, Measurements, Recurring
Derivative Assets
Derivative assets - Fair value	862,316	755,328
Derivative Liabilities
Derivative liabilities - Fair value	948,387	887,264
Fair Value, Measurements, Nonrecurring
Derivative Liabilities
Loans held-for-investment, fair value disclosure	35,133	72,614
Fair Value, Measurements, Nonrecurring | Tax credit investments
Derivative Liabilities
Assets, fair value disclosure	1,038
Level 3 | Fair Value, Measurements, Recurring
Derivative Assets
Derivative assets - Fair value	352	323
Derivative Liabilities
Derivative liabilities - Fair value	15,119	0
Level 3 | Fair Value, Measurements, Nonrecurring
Derivative Liabilities
Loans held-for-investment, fair value disclosure	35,133	72,614
Level 3 | Fair Value, Measurements, Nonrecurring | Tax credit investments
Derivative Liabilities
Assets, fair value disclosure	1,038
Level 3 | Fair Value, Measurements, Nonrecurring | Discounted cash flows
Derivative Liabilities
Loans held-for-investment, fair value disclosure		23,322
Level 3 | Fair Value, Measurements, Nonrecurring | Fair value of collateral
Derivative Liabilities
Loans held-for-investment, fair value disclosure	13,955	17,912
Level 3 | Fair Value, Measurements, Nonrecurring | Fair value of collateral
Derivative Liabilities
Loans held-for-investment, fair value disclosure	6,134
Level 3 | Fair Value, Measurements, Nonrecurring | Individual analysis of each investment | Tax credit investments
Derivative Liabilities
Assets, fair value disclosure	1,038
Level 3 | Fair Value, Measurements, Nonrecurring | Fair value of property
Derivative Liabilities
Loans held-for-investment, fair value disclosure	$ 15,044	$ 31,380
Level 3 | Fair Value, Measurements, Nonrecurring | Selling cost | Fair value of property
Derivative Liabilities
Loans held-for-investment, measurement input	8.00%	8.00%
Level 3 | Fair Value, Measurements, Nonrecurring | Minimum | Discount | Discounted cash flows
Derivative Liabilities
Loans held-for-investment, measurement input		4.00%
Level 3 | Fair Value, Measurements, Nonrecurring | Minimum | Discount | Fair value of collateral
Derivative Liabilities
Loans held-for-investment, measurement input	15.00%	15.00%
Level 3 | Fair Value, Measurements, Nonrecurring | Maximum | Discount | Discounted cash flows
Derivative Liabilities
Loans held-for-investment, measurement input		6.00%
Level 3 | Fair Value, Measurements, Nonrecurring | Maximum | Discount | Fair value of collateral
Derivative Liabilities
Loans held-for-investment, measurement input	75.00%	75.00%
Level 3 | Fair Value, Measurements, Nonrecurring | Weighted Average | Discount | Discounted cash flows
Derivative Liabilities
Loans held-for-investment, measurement input		4.00%
Level 3 | Fair Value, Measurements, Nonrecurring | Weighted Average | Discount | Fair value of collateral
Derivative Liabilities
Loans held-for-investment, measurement input	48.00%	37.00%
Level 3 | Fair Value, Measurements, Nonrecurring | Weighted Average | Selling cost | Fair value of property
Derivative Liabilities
Loans held-for-investment, measurement input	8.00%	8.00%
Equity contracts | Fair Value, Measurements, Recurring
Derivative Assets
Derivative assets - Fair value	$ 352	$ 323
Derivative Liabilities
Derivative liabilities - Fair value	15,119
Equity contracts | Level 3 | Fair Value, Measurements, Recurring
Derivative Assets
Derivative assets - Fair value	352	$ 323
Derivative Liabilities
Derivative liabilities - Fair value	$ 15,119
Equity contracts | Level 3 | Fair Value, Measurements, Recurring | Liquidity discount
Derivative Liabilities
Measurement input	47.00%	47.00%
Equity contracts | Level 3 | Fair Value, Measurements, Recurring | Payout % designated based on operating revenue and operating EBITDA of investee
Derivative Liabilities
Measurement input	84.00%
Equity contracts | Level 3 | Fair Value, Measurements, Recurring | Minimum | Equity volatility | Black-Scholes option pricing model
Derivative Liabilities
Measurement input	41.00%	42.00%
Equity contracts | Level 3 | Fair Value, Measurements, Recurring | Maximum | Equity volatility | Black-Scholes option pricing model
Derivative Liabilities
Measurement input	51.00%	60.00%
Equity contracts | Level 3 | Fair Value, Measurements, Recurring | Weighted Average | Equity volatility | Black-Scholes option pricing model
Derivative Liabilities
Measurement input	46.00%	54.00%
Equity contracts | Level 3 | Fair Value, Measurements, Recurring | Weighted Average | Liquidity discount
Derivative Liabilities
Measurement input	47.00%	47.00%
Equity contracts | Level 3 | Fair Value, Measurements, Recurring | Weighted Average | Payout % designated based on operating revenue and operating EBITDA of investee
Derivative Liabilities
Measurement input	84.00%

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Fair Value Measurement and Fair Value of Financial Instruments - Carrying Amounts of Assets That Were Still Held and Had Fair Value Changes Measured on a Nonrecurring Basis (Details) - Fair Value, Measurements, Nonrecurring - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Fair Value, Assets Measured on a Nonrecurring Basis
Loans held-for-investment, fair value disclosure	$ 35,133	$ 72,614
Tax credit investments
Fair Value, Assets Measured on a Nonrecurring Basis
Assets, fair value disclosure	1,038
Commercial lending
Fair Value, Assets Measured on a Nonrecurring Basis
Loans held-for-investment, fair value disclosure	33,929	71,391
Consumer lending
Fair Value, Assets Measured on a Nonrecurring Basis
Loans held-for-investment, fair value disclosure	1,204	1,223
Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets Measured on a Nonrecurring Basis
Loans held-for-investment, fair value disclosure	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Tax credit investments
Fair Value, Assets Measured on a Nonrecurring Basis
Assets, fair value disclosure	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Commercial lending
Fair Value, Assets Measured on a Nonrecurring Basis
Loans held-for-investment, fair value disclosure	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Consumer lending
Fair Value, Assets Measured on a Nonrecurring Basis
Loans held-for-investment, fair value disclosure	0	0
Significant Other Observable Inputs (Level 2)
Fair Value, Assets Measured on a Nonrecurring Basis
Loans held-for-investment, fair value disclosure	0	0
Significant Other Observable Inputs (Level 2) | Tax credit investments
Fair Value, Assets Measured on a Nonrecurring Basis
Assets, fair value disclosure	0
Significant Other Observable Inputs (Level 2) | Commercial lending
Fair Value, Assets Measured on a Nonrecurring Basis
Loans held-for-investment, fair value disclosure	0	0
Significant Other Observable Inputs (Level 2) | Consumer lending
Fair Value, Assets Measured on a Nonrecurring Basis
Loans held-for-investment, fair value disclosure	0	0
Significant Unobservable Inputs (Level 3)
Fair Value, Assets Measured on a Nonrecurring Basis
Loans held-for-investment, fair value disclosure	35,133	72,614
Significant Unobservable Inputs (Level 3) | Tax credit investments
Fair Value, Assets Measured on a Nonrecurring Basis
Assets, fair value disclosure	1,038
Significant Unobservable Inputs (Level 3) | Commercial lending
Fair Value, Assets Measured on a Nonrecurring Basis
Loans held-for-investment, fair value disclosure	33,929	71,391
Significant Unobservable Inputs (Level 3) | Consumer lending
Fair Value, Assets Measured on a Nonrecurring Basis
Loans held-for-investment, fair value disclosure	1,204	1,223
Commercial and industrial (“C&I”) | Commercial lending
Fair Value, Assets Measured on a Nonrecurring Basis
Loans held-for-investment, fair value disclosure	22,788	40,011
Commercial and industrial (“C&I”) | Quoted Prices in Active Markets for Identical Assets (Level 1) | Commercial lending
Fair Value, Assets Measured on a Nonrecurring Basis
Loans held-for-investment, fair value disclosure	0	0
Commercial and industrial (“C&I”) | Significant Other Observable Inputs (Level 2) | Commercial lending
Fair Value, Assets Measured on a Nonrecurring Basis
Loans held-for-investment, fair value disclosure	0	0
Commercial and industrial (“C&I”) | Significant Unobservable Inputs (Level 3) | Commercial lending
Fair Value, Assets Measured on a Nonrecurring Basis
Loans held-for-investment, fair value disclosure	22,788	40,011
CRE | Commercial lending
Fair Value, Assets Measured on a Nonrecurring Basis
Loans held-for-investment, fair value disclosure		31,380
CRE | Quoted Prices in Active Markets for Identical Assets (Level 1) | Commercial lending
Fair Value, Assets Measured on a Nonrecurring Basis
Loans held-for-investment, fair value disclosure		0
CRE | Significant Other Observable Inputs (Level 2) | Commercial lending
Fair Value, Assets Measured on a Nonrecurring Basis
Loans held-for-investment, fair value disclosure		0
CRE | Significant Unobservable Inputs (Level 3) | Commercial lending
Fair Value, Assets Measured on a Nonrecurring Basis
Loans held-for-investment, fair value disclosure		31,380
Construction and land | Commercial lending
Fair Value, Assets Measured on a Nonrecurring Basis
Loans held-for-investment, fair value disclosure	11,141
Construction and land | Quoted Prices in Active Markets for Identical Assets (Level 1) | Commercial lending
Fair Value, Assets Measured on a Nonrecurring Basis
Loans held-for-investment, fair value disclosure	0
Construction and land | Significant Other Observable Inputs (Level 2) | Commercial lending
Fair Value, Assets Measured on a Nonrecurring Basis
Loans held-for-investment, fair value disclosure	0
Construction and land | Significant Unobservable Inputs (Level 3) | Commercial lending
Fair Value, Assets Measured on a Nonrecurring Basis
Loans held-for-investment, fair value disclosure	11,141
HELOCs | Consumer lending
Fair Value, Assets Measured on a Nonrecurring Basis
Loans held-for-investment, fair value disclosure	1,204	1,223
HELOCs | Quoted Prices in Active Markets for Identical Assets (Level 1) | Consumer lending
Fair Value, Assets Measured on a Nonrecurring Basis
Loans held-for-investment, fair value disclosure	0	0
HELOCs | Significant Other Observable Inputs (Level 2) | Consumer lending
Fair Value, Assets Measured on a Nonrecurring Basis
Loans held-for-investment, fair value disclosure	0	0
HELOCs | Significant Unobservable Inputs (Level 3) | Consumer lending
Fair Value, Assets Measured on a Nonrecurring Basis
Loans held-for-investment, fair value disclosure	$ 1,204	$ 1,223

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Fair Value Measurement and Fair Value of Financial Instruments - Increase (Decrease) in Fair Value of Assets Measured on a Nonrecurring Basis (Details) - Fair Value, Measurements, Nonrecurring - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Loans held-for-investment
Fair Value, Assets Measured on a Nonrecurring Basis
Increase (decrease) in value of assets	$ (10,088)	$ (21,233)	$ (14,891)	$ (33,572)
Loans held-for-investment | Commercial lending
Fair Value, Assets Measured on a Nonrecurring Basis
Increase (decrease) in value of assets	(10,047)	(21,314)	(14,850)	(33,738)
Loans held-for-investment | Commercial lending | Commercial and industrial (“C&I”)
Fair Value, Assets Measured on a Nonrecurring Basis
Increase (decrease) in value of assets	366	(15,265)	(4,437)	(30,011)
Loans held-for-investment | Commercial lending | CRE
Fair Value, Assets Measured on a Nonrecurring Basis
Increase (decrease) in value of assets	0	(118)	0	2,212
Loans held-for-investment | Commercial lending | Multifamily residential
Fair Value, Assets Measured on a Nonrecurring Basis
Increase (decrease) in value of assets	0	(5,931)	0	(5,939)
Loans held-for-investment | Commercial lending | Construction and land
Fair Value, Assets Measured on a Nonrecurring Basis
Increase (decrease) in value of assets	(10,413)	0	(10,413)	0
Loans held-for-investment | Consumer lending
Fair Value, Assets Measured on a Nonrecurring Basis
Increase (decrease) in value of assets	(41)	81	(41)	166
Loans held-for-investment | Consumer lending | HELOCs
Fair Value, Assets Measured on a Nonrecurring Basis
Increase (decrease) in value of assets	(41)	81	(41)	166
Tax credit investments
Fair Value, Assets Measured on a Nonrecurring Basis
Increase (decrease) in value of assets	(790)	0	(1,577)	0
Other nonperforming assets
Fair Value, Assets Measured on a Nonrecurring Basis
Increase (decrease) in value of assets	$ 0	$ 0	$ 0	$ (6,861)

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Fair Value Measurement and Fair Value of Financial Instruments - Carrying and Fair Value Estimates per the Fair Value Hierarchy of Financial Instruments Measured on a Nonrecurring Basis (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Financial assets:
Cash and cash equivalents	$ 4,561,178	$ 3,481,784
Interest-bearing deposits with banks	17,213	139,021
Resale agreements	785,000	792,192
HTM debt securities	2,964,235	3,001,868
Restricted equity securities, at cost	79,522	78,624
Financial liabilities:
Repurchase agreements	0	300,000
Carrying Amount
Financial assets:
Cash and cash equivalents	4,561,178	3,481,784
Interest-bearing deposits with banks	17,213	139,021
Resale agreements	785,000	792,192
HTM debt securities	2,964,235	3,001,868
Restricted equity securities, at cost	79,522	78,624
Loans held-for-sale	4,762	25,644
Loans held-for-investment, net	50,251,661	47,606,785
Mortgage servicing rights	5,208	6,235
Accrued interest receivable	317,881	263,430
Financial liabilities:
Demand, checking, savings and money market deposits	38,435,954	42,637,316
Time deposits	16,651,077	13,330,533
Repurchase agreements		300,000
Short-term borrowings	4,500,000
Long-term debt	148,173	147,950
Accrued interest payable	150,890	37,198
Estimated Fair Value
Financial assets:
Cash and cash equivalents	4,561,178	3,481,784
Interest-bearing deposits with banks	17,213	139,021
Resale agreements	672,250	693,656
HTM debt securities	2,308,048	2,455,171
Restricted equity securities, at cost	79,522	78,624
Loans held-for-sale	4,762	25,644
Loans held-for-investment, net	48,992,846	46,670,690
Mortgage servicing rights	9,821	10,917
Accrued interest receivable	317,881	263,430
Financial liabilities:
Demand, checking, savings and money market deposits	38,435,954	42,637,316
Time deposits	16,547,883	13,228,777
Repurchase agreements		304,097
Short-term borrowings	4,500,000
Long-term debt	144,214	143,483
Accrued interest payable	150,890	37,198
Estimated Fair Value | Level 1
Financial assets:
Cash and cash equivalents	4,561,178	3,481,784
Interest-bearing deposits with banks	0	0
Resale agreements	0	0
HTM debt securities	470,618	471,469
Restricted equity securities, at cost	0	0
Loans held-for-sale	0	0
Loans held-for-investment, net	0	0
Mortgage servicing rights	0	0
Accrued interest receivable	0	0
Financial liabilities:
Demand, checking, savings and money market deposits	0	0
Time deposits	0	0
Repurchase agreements		0
Short-term borrowings	0
Long-term debt	0	0
Accrued interest payable	0	0
Estimated Fair Value | Level 2
Financial assets:
Cash and cash equivalents	0	0
Interest-bearing deposits with banks	17,213	139,021
Resale agreements	672,250	693,656
HTM debt securities	1,837,430	1,983,702
Restricted equity securities, at cost	79,522	78,624
Loans held-for-sale	4,762	25,644
Loans held-for-investment, net	0	0
Mortgage servicing rights	0	0
Accrued interest receivable	317,881	263,430
Financial liabilities:
Demand, checking, savings and money market deposits	38,435,954	42,637,316
Time deposits	16,547,883	13,228,777
Repurchase agreements		304,097
Short-term borrowings	4,500,000
Long-term debt	144,214	143,483
Accrued interest payable	150,890	37,198
Estimated Fair Value | Level 3
Financial assets:
Cash and cash equivalents	0	0
Interest-bearing deposits with banks	0	0
Resale agreements	0	0
HTM debt securities	0	0
Restricted equity securities, at cost	0	0
Loans held-for-sale	0	0
Loans held-for-investment, net	48,992,846	46,670,690
Mortgage servicing rights	9,821	10,917
Accrued interest receivable	0	0
Financial liabilities:
Demand, checking, savings and money market deposits	0	0
Time deposits	0	0
Repurchase agreements		0
Short-term borrowings	0
Long-term debt	0	0
Accrued interest payable	$ 0	$ 0

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Assets Purchased under Resale Agreements and Sold under Repurchase Agreements - Resale Agreements (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Offsetting Assets [Line Items]
Gross resale agreements	$ 785,000,000		$ 785,000,000		$ 760,000,000
Average yield	2.73%	2.41%	2.55%	1.96%
Loans purchased under agreements to resell	$ 0		$ 0		$ 32,200,000
Loans Purchased Under Resale Agreements
Offsetting Assets [Line Items]
Weighted-average yields		3.87%	7.27%	2.10%

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Assets Purchased under Resale Agreements and Sold under Repurchase Agreements - Repurchase Agreements (Details) - USD ($)	3 Months Ended			9 Months Ended
	Sep. 30, 2023	Mar. 31, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Amount of securities sold under repurchase agreements
Gross repurchase agreements	$ 0			$ 0		$ 300,000,000
Extinguishment repurchase agreements, amount		$ 300,000,000
Repurchase agreements’ extinguishment cost			$ 0	$ 3,900,000	$ 0
Average rate paid	5.51%		2.81%	4.32%	2.73%

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Assets Purchased under Resale Agreements and Sold under Repurchase Agreements - Balance Sheet Offsetting (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Assets, Resale Agreements
Gross Amounts of Recognized Assets	$ 785,000	$ 792,192
Gross Amounts Offset on the Consolidated Balance Sheet	0	0
Net Amounts of Assets Presented on the Consolidated Balance Sheet	785,000	792,192
Assets Purchased under Agreements to Resell Gross Amounts Not Offset [Abstract]
Collateral Received	(687,327)	(701,790)
Net Amount	97,673	90,402
Liabilities, Repurchase Agreements
Gross Amounts of Recognized Liabilities	0	300,000
Gross Amounts Offset on the Consolidated Balance Sheet	0	0
Net Amounts of Liabilities Presented on the Consolidated Balance Sheet	0	300,000
Assets Sold under Agreements to Repurchase Gross Amounts Not Offset [Abstract]
Collateral Pledged	0	(300,000)
Net Amount	$ 0	$ 0

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Securities - Schedule of Debt Securities (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
AFS debt securities:
Amortized Cost	$ 6,976,331	$ 6,879,225
Gross Unrealized Gains	138	498
Gross Unrealized Losses	(936,632)	(844,730)
Fair Value	6,039,837	6,034,993
HTM debt securities:
Amortized Cost	2,964,235	3,001,868
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(656,187)	(546,697)
Fair Value	2,308,048	2,455,171
Total debt securities
Amortized Cost	9,940,566	9,881,093
Gross Unrealized Gains	138	498
Gross Unrealized Losses	(1,592,819)	(1,391,427)
Fair Value	8,347,885	8,490,164
U.S. Treasury securities
AFS debt securities:
Amortized Cost	974,615	676,306
Gross Unrealized Gains	48	0
Gross Unrealized Losses	(70,562)	(70,103)
Fair Value	904,101	606,203
HTM debt securities:
Amortized Cost	528,169	524,081
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(57,551)	(52,612)
Fair Value	470,618	471,469
U.S. government agency and U.S. government-sponsored enterprise debt securities
AFS debt securities:
Amortized Cost	512,712	517,806
Gross Unrealized Gains	0	67
Gross Unrealized Losses	(65,248)	(56,266)
Fair Value	447,464	461,607
HTM debt securities:
Amortized Cost	1,001,298	998,972
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(249,007)	(209,560)
Fair Value	752,291	789,412
U.S. government agency and U.S. government-sponsored enterprise mortgage-backed securities - Commercial mortgage-backed securities
AFS debt securities:
Amortized Cost	545,086	577,392
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(82,754)	(77,123)
Fair Value	462,332	500,269
HTM debt securities:
Amortized Cost	494,787	506,965
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(112,623)	(98,566)
Fair Value	382,164	408,399
U.S. government agency and U.S. government-sponsored enterprise mortgage-backed securities - Residential mortgage-backed securities
AFS debt securities:
Amortized Cost	1,983,284	2,011,054
Gross Unrealized Gains	15	41
Gross Unrealized Losses	(288,957)	(248,900)
Fair Value	1,694,342	1,762,195
HTM debt securities:
Amortized Cost	750,888	782,141
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(183,488)	(148,230)
Fair Value	567,400	633,911
Municipal securities
AFS debt securities:
Amortized Cost	301,408	303,884
Gross Unrealized Gains	0	3
Gross Unrealized Losses	(57,852)	(46,788)
Fair Value	243,556	257,099
HTM debt securities:
Amortized Cost	189,093	189,709
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(53,518)	(37,729)
Fair Value	135,575	151,980
Non-agency commercial mortgage-backed securities
AFS debt securities:
Amortized Cost	418,451	447,512
Gross Unrealized Gains	0	213
Gross Unrealized Losses	(53,131)	(49,396)
Fair Value	365,320	398,329
Non-agency residential mortgage-backed securities
AFS debt securities:
Amortized Cost	687,674	762,202
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(116,887)	(112,978)
Fair Value	570,787	649,224
Corporate debt securities
AFS debt securities:
Amortized Cost	653,501	673,502
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(178,067)	(147,228)
Fair Value	475,434	526,274
Foreign government bonds
AFS debt securities:
Amortized Cost	237,531	241,165
Gross Unrealized Gains	75	174
Gross Unrealized Losses	(14,816)	(14,286)
Fair Value	222,790	227,053
Asset-backed securities
AFS debt securities:
Amortized Cost	44,819	51,152
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(1,062)	(2,076)
Fair Value	43,757	49,076
Collateralized loan obligations (“CLOs”)
AFS debt securities:
Amortized Cost	617,250	617,250
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(7,296)	(19,586)
Fair Value	$ 609,954	$ 597,664

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Securities - Narrative (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2023 USD ($) security	Sep. 30, 2022 USD ($)	Sep. 30, 2023 USD ($) security	Sep. 30, 2022 USD ($)	Dec. 31, 2022 USD ($) security
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items]
AFS and HTM, accrued interest	$ 42,600,000		$ 42,600,000		$ 41,800,000
Number of available-for-sale debt securities in an unrealized loss position | security	567		567		559
Debt Securities, AFS, allowance for credit loss	$ 0		$ 0		$ 0
Provision (reversal of provision) for credit losses	0	$ 0	0	$ 0
HTM securities allowance for credit loss	0		0		0
Asset Pledged as Collateral
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items]
AFS and HTM debt securities carrying value	$ 7,040,000,000.00		$ 7,040,000,000.00		$ 794,200,000
U.S. government agency and U.S. government sponsored enterprise mortgage-backed securities
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items]
Number of available-for-sale debt securities in an unrealized loss position | security	269		269		263
Non-agency mortgage-backed securities
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items]
Number of available-for-sale debt securities in an unrealized loss position | security	99		99		100
Corporate debt securities
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items]
Number of available-for-sale debt securities in an unrealized loss position | security	66		66		68

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Securities - Continuous Unrealized Losses (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Schedule of Available-for-sale Debt Securities
Available-for-sale debt securities, Less than 12 Months, Fair Value	$ 382,537	$ 1,451,466
Available-for-sale debt securities, Gross Unrealized Loss, Less than 12 Months	(2,011)	(104,682)
Available-for-sale debt securities, 12 Months or More, Fair Value	5,327,754	4,332,275
Available-for-sale debt securities, Gross Unrealized Loss, 12 Months or More	(934,621)	(740,048)
Available-for-sale debt securities fair value, Total	5,710,291	5,783,741
Available-for-sale debt securities, Gross Unrealized Loss, Total	(936,632)	(844,730)
U.S. Treasury securities
Schedule of Available-for-sale Debt Securities
Available-for-sale debt securities, Less than 12 Months, Fair Value	0	131,843
Available-for-sale debt securities, Gross Unrealized Loss, Less than 12 Months	0	(8,761)
Available-for-sale debt securities, 12 Months or More, Fair Value	605,730	474,360
Available-for-sale debt securities, Gross Unrealized Loss, 12 Months or More	(70,562)	(61,342)
Available-for-sale debt securities fair value, Total	605,730	606,203
Available-for-sale debt securities, Gross Unrealized Loss, Total	(70,562)	(70,103)
U.S. government agency and U.S. government-sponsored enterprise debt securities
Schedule of Available-for-sale Debt Securities
Available-for-sale debt securities, Less than 12 Months, Fair Value	199,139	97,403
Available-for-sale debt securities, Gross Unrealized Loss, Less than 12 Months	(861)	(6,902)
Available-for-sale debt securities, 12 Months or More, Fair Value	248,325	214,136
Available-for-sale debt securities, Gross Unrealized Loss, 12 Months or More	(64,387)	(49,364)
Available-for-sale debt securities fair value, Total	447,464	311,539
Available-for-sale debt securities, Gross Unrealized Loss, Total	(65,248)	(56,266)
U.S. government agency and U.S. government-sponsored enterprise mortgage-backed securities - Commercial mortgage-backed securities
Schedule of Available-for-sale Debt Securities
Available-for-sale debt securities, Less than 12 Months, Fair Value	4,434	252,144
Available-for-sale debt securities, Gross Unrealized Loss, Less than 12 Months	(96)	(30,029)
Available-for-sale debt securities, 12 Months or More, Fair Value	457,898	248,125
Available-for-sale debt securities, Gross Unrealized Loss, 12 Months or More	(82,658)	(47,094)
Available-for-sale debt securities fair value, Total	462,332	500,269
Available-for-sale debt securities, Gross Unrealized Loss, Total	(82,754)	(77,123)
U.S. government agency and U.S. government-sponsored enterprise mortgage-backed securities - Residential mortgage-backed securities
Schedule of Available-for-sale Debt Securities
Available-for-sale debt securities, Less than 12 Months, Fair Value	63,660	307,536
Available-for-sale debt securities, Gross Unrealized Loss, Less than 12 Months	(517)	(20,346)
Available-for-sale debt securities, 12 Months or More, Fair Value	1,627,451	1,448,658
Available-for-sale debt securities, Gross Unrealized Loss, 12 Months or More	(288,440)	(228,554)
Available-for-sale debt securities fair value, Total	1,691,111	1,756,194
Available-for-sale debt securities, Gross Unrealized Loss, Total	(288,957)	(248,900)
Municipal securities
Schedule of Available-for-sale Debt Securities
Available-for-sale debt securities, Less than 12 Months, Fair Value	5,891	95,655
Available-for-sale debt securities, Gross Unrealized Loss, Less than 12 Months	(288)	(10,194)
Available-for-sale debt securities, 12 Months or More, Fair Value	237,665	159,439
Available-for-sale debt securities, Gross Unrealized Loss, 12 Months or More	(57,564)	(36,594)
Available-for-sale debt securities fair value, Total	243,556	255,094
Available-for-sale debt securities, Gross Unrealized Loss, Total	(57,852)	(46,788)
Non-agency commercial mortgage-backed securities
Schedule of Available-for-sale Debt Securities
Available-for-sale debt securities, Less than 12 Months, Fair Value	0	106,184
Available-for-sale debt securities, Gross Unrealized Loss, Less than 12 Months	0	(3,309)
Available-for-sale debt securities, 12 Months or More, Fair Value	365,320	282,301
Available-for-sale debt securities, Gross Unrealized Loss, 12 Months or More	(53,131)	(46,087)
Available-for-sale debt securities fair value, Total	365,320	388,485
Available-for-sale debt securities, Gross Unrealized Loss, Total	(53,131)	(49,396)
Non-agency residential mortgage-backed securities
Schedule of Available-for-sale Debt Securities
Available-for-sale debt securities, Less than 12 Months, Fair Value	0	22,715
Available-for-sale debt securities, Gross Unrealized Loss, Less than 12 Months	0	(1,546)
Available-for-sale debt securities, 12 Months or More, Fair Value	570,787	626,509
Available-for-sale debt securities, Gross Unrealized Loss, 12 Months or More	(116,887)	(111,432)
Available-for-sale debt securities fair value, Total	570,787	649,224
Available-for-sale debt securities, Gross Unrealized Loss, Total	(116,887)	(112,978)
Corporate debt securities
Schedule of Available-for-sale Debt Securities
Available-for-sale debt securities, Less than 12 Months, Fair Value	0	173,595
Available-for-sale debt securities, Gross Unrealized Loss, Less than 12 Months	0	(17,907)
Available-for-sale debt securities, 12 Months or More, Fair Value	475,434	352,679
Available-for-sale debt securities, Gross Unrealized Loss, 12 Months or More	(178,067)	(129,321)
Available-for-sale debt securities fair value, Total	475,434	526,274
Available-for-sale debt securities, Gross Unrealized Loss, Total	(178,067)	(147,228)
Foreign government bonds
Schedule of Available-for-sale Debt Securities
Available-for-sale debt securities, Less than 12 Months, Fair Value	109,413	107,576
Available-for-sale debt securities, Gross Unrealized Loss, Less than 12 Months	(249)	(429)
Available-for-sale debt securities, 12 Months or More, Fair Value	85,433	36,143
Available-for-sale debt securities, Gross Unrealized Loss, 12 Months or More	(14,567)	(13,857)
Available-for-sale debt securities fair value, Total	194,846	143,719
Available-for-sale debt securities, Gross Unrealized Loss, Total	(14,816)	(14,286)
Asset-backed securities
Schedule of Available-for-sale Debt Securities
Available-for-sale debt securities, Less than 12 Months, Fair Value	0	12,450
Available-for-sale debt securities, Gross Unrealized Loss, Less than 12 Months	0	(524)
Available-for-sale debt securities, 12 Months or More, Fair Value	43,757	36,626
Available-for-sale debt securities, Gross Unrealized Loss, 12 Months or More	(1,062)	(1,552)
Available-for-sale debt securities fair value, Total	43,757	49,076
Available-for-sale debt securities, Gross Unrealized Loss, Total	(1,062)	(2,076)
Collateralized loan obligations (“CLOs”)
Schedule of Available-for-sale Debt Securities
Available-for-sale debt securities, Less than 12 Months, Fair Value	0	144,365
Available-for-sale debt securities, Gross Unrealized Loss, Less than 12 Months	0	(4,735)
Available-for-sale debt securities, 12 Months or More, Fair Value	609,954	453,299
Available-for-sale debt securities, Gross Unrealized Loss, 12 Months or More	(7,296)	(14,851)
Available-for-sale debt securities fair value, Total	609,954	597,664
Available-for-sale debt securities, Gross Unrealized Loss, Total	$ (7,296)	$ (19,586)

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Securities - Gross Realized Gains and Losses (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Investments, Debt and Equity Securities [Abstract]
Gross realized gains from sales	$ 0	$ 0	$ 0	$ 1,306
Impairment write-off	0	0	10,000	0
Related tax expense (benefit)	$ 0	$ 0	$ (2,956)	$ 386

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Securities - Composition of Interest Income on Debt Securities (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Investments, Debt and Equity Securities [Abstract]
Taxable interest	$ 63,877	$ 46,172	$ 189,065	$ 125,626
Nontaxable interest	5,901	4,920	15,614	14,309
Total interest income on debt securities	$ 69,778	$ 51,092	$ 204,679	$ 139,935

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Securities - Scheduled Contractual Maturities of AFS (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Amortized cost
Within One Year	$ 583,428
After One Year through Five Years	1,048,858
After Five Years through Ten Years	986,581
After Ten Years	4,357,464
Amortized Cost	6,976,331	$ 6,879,225
Fair value
Within One Year	581,600
After One Year through Five Years	964,501
After Five Years through Ten Years	874,214
After Ten Years	3,619,522
Total	$ 6,039,837
Weighted Average Yield
Within One Year	5.32%
After One Year through Five Years	1.86%
After Five Years through Ten Years	4.27%
After Ten Years	3.40%
Total	3.45%
U.S. Treasury securities
Amortized cost
Within One Year	$ 298,323
After One Year through Five Years	676,292
After Five Years through Ten Years	0
After Ten Years	0
Amortized Cost	974,615
Fair value
Within One Year	298,371
After One Year through Five Years	605,730
After Five Years through Ten Years	0
After Ten Years	0
Total	$ 904,101
Weighted Average Yield
Within One Year	5.44%
After One Year through Five Years	1.20%
After Five Years through Ten Years	0.00%
After Ten Years	0.00%
Total	2.50%
U.S. government-sponsored enterprises debt securities
Amortized cost
Within One Year	$ 150,000
After One Year through Five Years	96,472
After Five Years through Ten Years	103,171
After Ten Years	163,069
Amortized Cost	512,712
Fair value
Within One Year	149,616
After One Year through Five Years	91,343
After Five Years through Ten Years	82,252
After Ten Years	124,253
Total	$ 447,464
Weighted Average Yield
Within One Year	4.98%
After One Year through Five Years	3.08%
After Five Years through Ten Years	1.39%
After Ten Years	2.18%
Total	3.01%
U.S. government agency and U.S. government sponsored enterprise mortgage-backed securities
Amortized cost
Within One Year	$ 0
After One Year through Five Years	42,260
After Five Years through Ten Years	144,846
After Ten Years	2,341,264
Amortized Cost	2,528,370
Fair value
Within One Year	0
After One Year through Five Years	39,718
After Five Years through Ten Years	128,933
After Ten Years	1,988,023
Total	$ 2,156,674
Weighted Average Yield
Within One Year	0.00%
After One Year through Five Years	3.16%
After Five Years through Ten Years	2.73%
After Ten Years	3.68%
Total	3.62%
Municipal securities
Amortized cost
Within One Year	$ 2,400
After One Year through Five Years	36,850
After Five Years through Ten Years	9,007
After Ten Years	253,151
Amortized Cost	301,408
Fair value
Within One Year	2,383
After One Year through Five Years	33,794
After Five Years through Ten Years	7,596
After Ten Years	199,783
Total	$ 243,556
Weighted Average Yield
Within One Year	3.13%
After One Year through Five Years	2.34%
After Five Years through Ten Years	2.87%
After Ten Years	2.24%
Total	2.28%
Non-agency mortgage-backed securities
Amortized cost
Within One Year	$ 99,830
After One Year through Five Years	92,328
After Five Years through Ten Years	11,056
After Ten Years	902,911
Amortized Cost	1,106,125
Fair value
Within One Year	98,420
After One Year through Five Years	89,370
After Five Years through Ten Years	10,793
After Ten Years	737,524
Total	$ 936,107
Weighted Average Yield
Within One Year	6.27%
After One Year through Five Years	4.16%
After Five Years through Ten Years	0.80%
After Ten Years	2.58%
Total	3.02%
Corporate debt securities
Amortized cost
Within One Year	$ 0
After One Year through Five Years	0
After Five Years through Ten Years	349,501
After Ten Years	304,000
Amortized Cost	653,501
Fair value
Within One Year	0
After One Year through Five Years	0
After Five Years through Ten Years	280,812
After Ten Years	194,622
Total	$ 475,434
Weighted Average Yield
Within One Year	0.00%
After One Year through Five Years	0.00%
After Five Years through Ten Years	3.48%
After Ten Years	1.97%
Total	2.78%
Foreign government bonds
Amortized cost
Within One Year	$ 32,875
After One Year through Five Years	104,656
After Five Years through Ten Years	50,000
After Ten Years	50,000
Amortized Cost	237,531
Fair value
Within One Year	32,810
After One Year through Five Years	104,546
After Five Years through Ten Years	49,609
After Ten Years	35,825
Total	$ 222,790
Weighted Average Yield
Within One Year	3.02%
After One Year through Five Years	2.28%
After Five Years through Ten Years	5.71%
After Ten Years	1.50%
Total	2.94%
Asset-backed securities
Amortized cost
Within One Year	$ 0
After One Year through Five Years	0
After Five Years through Ten Years	0
After Ten Years	44,819
Amortized Cost	44,819
Fair value
Within One Year	0
After One Year through Five Years	0
After Five Years through Ten Years	0
After Ten Years	43,757
Total	$ 43,757
Weighted Average Yield
Within One Year	0.00%
After One Year through Five Years	0.00%
After Five Years through Ten Years	0.00%
After Ten Years	6.01%
Total	6.01%
Collateralized loan obligations (“CLOs”)
Amortized cost
Within One Year	$ 0
After One Year through Five Years	0
After Five Years through Ten Years	319,000
After Ten Years	298,250
Amortized Cost	617,250
Fair value
Within One Year	0
After One Year through Five Years	0
After Five Years through Ten Years	314,219
After Ten Years	295,735
Total	$ 609,954
Weighted Average Yield
Within One Year	0.00%
After One Year through Five Years	0.00%
After Five Years through Ten Years	6.71%
After Ten Years	6.76%
Total	6.73%

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Securities - Scheduled Contractual Maturities of HTM Debt Securities (Details) $ in Thousands	Sep. 30, 2023 USD ($)
Amortized cost
Within One Year	$ 0
After One Year through Five Years	528,169
After Five Years through Ten Years	423,862
After Ten Years	2,012,204
Total	2,964,235
Fair value
Within One Year	0
After One Year through Five Years	470,618
After Five Years through Ten Years	341,533
After Ten Years	1,495,897
Total	$ 2,308,048
Weighted Average Yield
Within One Year	0.00%
After One Year through Five Years	1.05%
After Five Years through Ten Years	1.84%
After Ten Years	1.78%
Total	1.66%
U.S. Treasury securities
Amortized cost
Within One Year	$ 0
After One Year through Five Years	528,169
After Five Years through Ten Years	0
After Ten Years	0
Total	528,169
Fair value
Within One Year	0
After One Year through Five Years	470,618
After Five Years through Ten Years	0
After Ten Years	0
Total	$ 470,618
Weighted Average Yield
Within One Year	0.00%
After One Year through Five Years	1.05%
After Five Years through Ten Years	0.00%
After Ten Years	0.00%
Total	1.05%
U.S. government-sponsored enterprises debt securities
Amortized cost
Within One Year	$ 0
After One Year through Five Years	0
After Five Years through Ten Years	328,870
After Ten Years	672,428
Total	1,001,298
Fair value
Within One Year	0
After One Year through Five Years	0
After Five Years through Ten Years	265,107
After Ten Years	487,184
Total	$ 752,291
Weighted Average Yield
Within One Year	0.00%
After One Year through Five Years	0.00%
After Five Years through Ten Years	1.92%
After Ten Years	1.89%
Total	1.90%
U.S. government agency and U.S. government sponsored enterprise mortgage-backed securities
Amortized cost
Within One Year	$ 0
After One Year through Five Years	0
After Five Years through Ten Years	94,992
After Ten Years	1,150,683
Total	1,245,675
Fair value
Within One Year	0
After One Year through Five Years	0
After Five Years through Ten Years	76,426
After Ten Years	873,138
Total	$ 949,564
Weighted Average Yield
Within One Year	0.00%
After One Year through Five Years	0.00%
After Five Years through Ten Years	1.56%
After Ten Years	1.68%
Total	1.67%
Municipal securities
Amortized cost
Within One Year	$ 0
After One Year through Five Years	0
After Five Years through Ten Years	0
After Ten Years	189,093
Total	189,093
Fair value
Within One Year	0
After One Year through Five Years	0
After Five Years through Ten Years	0
After Ten Years	135,575
Total	$ 135,575
Weighted Average Yield
Within One Year	0.00%
After One Year through Five Years	0.00%
After Five Years through Ten Years	0.00%
After Ten Years	1.99%
Total	1.99%

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Securities - Restricted Equity Securities (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Investments, Debt and Equity Securities [Abstract]
Federal Reserve Bank of San Francisco (“FRBSF”) stock	$ 62,272	$ 61,374
FHLB stock	17,250	17,250
Total restricted equity securities	$ 79,522	$ 78,624

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Derivatives - Narrative (Details) - USD ($)	9 Months Ended	12 Months Ended
	Sep. 30, 2023	Dec. 31, 2022
Derivative [Line Items]
Gross amounts recognized	$ 862,316,000	$ 755,328,000
Derivative liabilities - Fair value	948,387,000	887,264,000
Derivative instruments designated as hedging instruments
Derivative [Line Items]
Gross amounts recognized	4,997,000	19,045,000
Derivative liabilities - Fair value	96,382,000	19,687,000
Notional amount	5,081,480,000	3,534,832,000
Derivatives not designated as hedging instruments
Derivative [Line Items]
Gross amounts recognized	857,319,000	736,283,000
Derivative liabilities - Fair value	852,005,000	867,577,000
Notional amount	22,804,812,000	20,056,255,000
Interest rate contracts | Derivatives not designated as hedging instruments
Derivative [Line Items]
Gross amounts recognized	622,799,000	426,828,000
Derivative liabilities - Fair value	615,920,000	564,829,000
Notional amount	17,456,102,000	16,932,414,000
Interest rate contracts | Derivatives not designated as hedging instruments | LCH
Derivative [Line Items]
Gross amounts recognized	16,000,000.0	167,200,000
Derivative liabilities - Fair value	65,700,000	81,300,000
Interest rate contracts | Cash Flow Hedging | Derivative instruments designated as hedging instruments
Derivative [Line Items]
Gross amounts recognized	1,288,000	13,455,000
Derivative liabilities - Fair value	96,382,000	19,687,000
Notional amount	5,000,000,000	3,450,000,000
Net unrealized losses, net of tax, recorded in AOCI expected to be reclassified into earnings during next 12 months	66,200,000
Foreign exchange contracts | Derivatives not designated as hedging instruments
Derivative [Line Items]
Gross amounts recognized	96,668,000	47,519,000
Derivative liabilities - Fair value	77,099,000	44,117,000
Notional amount	$ 5,205,007,000	$ 2,982,891,000
Foreign exchange contracts | Derivatives not designated as hedging instruments | Maximum
Derivative [Line Items]
Original maturity (in years)	1 year	1 year
Credit contracts | Derivatives not designated as hedging instruments
Derivative [Line Items]
Gross amounts recognized	$ 0	$ 0
Derivative liabilities - Fair value	12,000	23,000
Notional amount	$ 143,703,000	$ 140,950,000
Credit contracts | Derivatives not designated as hedging instruments | RPAs
Derivative [Line Items]
Weighted average remaining maturity of outstanding RPAs	2 years 6 months	2 years 4 months 24 days
Credit contracts | Derivatives not designated as hedging instruments | Long
Derivative [Line Items]
Notional amount	$ 25,000,000	$ 0
Credit-risk-related contingent features
Derivative [Line Items]
Aggregate fair value of derivative instruments in net liability position	2,200,000	2,600,000
Collateral posted	2,200,000	$ 1,100,000
Commercial Banking | Interest rate contracts | Cash Flow Hedging | Derivative instruments designated as hedging instruments
Derivative [Line Items]
Notional amount	$ 5,000,000,000

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Derivatives - Notional and Fair Values (Details) MMBTU in Thousands, Boe in Thousands	3 Months Ended	9 Months Ended	12 Months Ended
	Sep. 30, 2023 USD ($) company shares	Sep. 30, 2023 USD ($) MMBTU Boe company shares	Dec. 31, 2022 USD ($) Boe MMBTU company
Derivative Assets
Derivative assets - Fair value	$ 862,316,000	$ 862,316,000	$ 755,328,000
Less: Master Netting Arrangements	(260,648,000)	(260,648,000)	(242,745,000)
Less: Cash collateral received	(269,683,000)	(269,683,000)	(372,038,000)
Net derivative assets	331,985,000	331,985,000	140,545,000
Derivative Liabilities
Gross amounts recognized	948,387,000	948,387,000	887,264,000
Less: Master Netting Arrangements	(260,648,000)	(260,648,000)	(242,745,000)
Amount used to offset against derivative liabilities	(2,225,000)	(2,225,000)	0
Net derivative liabilities	$ 685,514,000	$ 685,514,000	$ 644,519,000
Rayliant Global Advisors Limited
Derivative Liabilities
Asset Acquisition, Contingent Consideration, Number of Shares | shares	349,138
Performance-Based RSUs
Derivative Liabilities
Vested (in shares) | shares		152,558
Crude oil
Derivative Liabilities
Derivative, nonmonetary notional amount, energy measure | Boe		20,672	12,005
Natural gas
Derivative Liabilities
Derivative, nonmonetary notional amount, energy measure | MMBTU		363,020	247,704
Derivative instruments designated as hedging instruments
Derivative Instruments
Notional amount	$ 5,081,480,000	$ 5,081,480,000	$ 3,534,832,000
Derivative Assets
Derivative assets - Fair value	4,997,000	4,997,000	19,045,000
Derivative Liabilities
Gross amounts recognized	96,382,000	96,382,000	19,687,000
Derivatives not designated as hedging instruments
Derivative Instruments
Notional amount	22,804,812,000	22,804,812,000	20,056,255,000
Derivative Assets
Derivative assets - Fair value	857,319,000	857,319,000	736,283,000
Derivative Liabilities
Gross amounts recognized	852,005,000	852,005,000	867,577,000
Interest rate contracts | Derivatives not designated as hedging instruments
Derivative Instruments
Notional amount	17,456,102,000	17,456,102,000	16,932,414,000
Derivative Assets
Derivative assets - Fair value	622,799,000	622,799,000	426,828,000
Derivative Liabilities
Gross amounts recognized	615,920,000	615,920,000	564,829,000
Interest rate contracts | Cash Flow Hedging | Derivative instruments designated as hedging instruments
Derivative Instruments
Notional amount	5,000,000,000	5,000,000,000	3,450,000,000
Derivative Assets
Derivative assets - Fair value	1,288,000	1,288,000	13,455,000
Derivative Liabilities
Gross amounts recognized	96,382,000	96,382,000	19,687,000
Foreign exchange contracts | Derivatives not designated as hedging instruments
Derivative Instruments
Notional amount	5,205,007,000	5,205,007,000	2,982,891,000
Derivative Assets
Derivative assets - Fair value	96,668,000	96,668,000	47,519,000
Derivative Liabilities
Gross amounts recognized	77,099,000	77,099,000	44,117,000
Foreign exchange contracts | Net Investment Hedging | Derivative instruments designated as hedging instruments
Derivative Instruments
Notional amount	81,480,000	81,480,000	84,832,000
Derivative Assets
Derivative assets - Fair value	3,709,000	3,709,000	5,590,000
Derivative Liabilities
Gross amounts recognized	0	0	0
Commodity contracts | Derivatives not designated as hedging instruments
Derivative Instruments
Notional amount	0	0	0
Derivative Assets
Derivative assets - Fair value	137,500,000	137,500,000	261,613,000
Derivative Liabilities
Gross amounts recognized	143,855,000	143,855,000	258,608,000
Credit contracts | Derivatives not designated as hedging instruments
Derivative Instruments
Notional amount	143,703,000	143,703,000	140,950,000
Derivative Assets
Derivative assets - Fair value	0	0	0
Derivative Liabilities
Gross amounts recognized	12,000	12,000	23,000
Equity contracts | Derivatives not designated as hedging instruments
Derivative Instruments
Notional amount	0	0	0
Derivative Assets
Derivative assets - Fair value	352,000	352,000	323,000
Derivative Liabilities
Gross amounts recognized	$ 15,119,000	$ 15,119,000	$ 0
Equity, Public Companies | Derivatives not designated as hedging instruments
Derivative Liabilities
Number of companies that issued the equity (issuers portion only) | company	1	1	1
Equity, Private Companies | Derivatives not designated as hedging instruments
Derivative Liabilities
Number of companies that issued the equity (issuers portion only) | company	13	13	13

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Derivatives - Gains (Losses) in Cash Flow Hedge and Net Investment Hedge (Details) - Derivative instruments designated as hedging instruments - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Interest rate contracts | Cash Flow Hedging
Derivative [Line Items]
Losses recognized in AOCI:	$ (62,715)	$ (48,325)	$ (129,329)	$ (88,771)
Gains (losses) reclassified from AOCI into earnings:	(24,059)	(1,619)	(54,955)	1,601
Interest rate contracts | Cash Flow Hedging | Interest expense (for cash flow hedges on borrowings)
Derivative [Line Items]
Gains (losses) reclassified from AOCI into earnings:	0	1,251	696	1,385
Interest rate contracts | Cash Flow Hedging | Interest and dividend income (for cash flow hedges on loans)
Derivative [Line Items]
Gains (losses) reclassified from AOCI into earnings:	(24,059)	(2,870)	(57,265)	216
Interest rate contracts | Cash Flow Hedging | Noninterest income
Derivative [Line Items]
Gains (losses) reclassified from AOCI into earnings:	0	0	1,614	0
Foreign exchange contracts | Net Investment Hedging
Derivative [Line Items]
Gains recognized in AOCI	$ 63	$ 4,343	$ 2,886	$ 6,027

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Derivatives - Derivatives Not Designated as Hedging Instruments (Details) MMBTU in Thousands, Boe in Thousands, $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2023 USD ($) MMBTU Boe	Dec. 31, 2022 USD ($) MMBTU Boe
Derivative [Line Items]
Gross amounts recognized	$ 862,316	$ 755,328
Derivative liabilities - Fair value	$ 948,387	$ 887,264
Crude oil
Derivative [Line Items]
Derivative, nonmonetary notional amount, energy measure | Boe	20,672	12,005
Natural gas
Derivative [Line Items]
Derivative, nonmonetary notional amount, energy measure | MMBTU	363,020	247,704
Customer-related positions:
Derivative [Line Items]
Notional amount	$ 11,383,158	$ 10,158,784
Gross amounts recognized	33,979	27,146
Derivative liabilities - Fair value	662,616	592,060
Other economic hedges:
Derivative [Line Items]
Notional amount	11,277,951	9,756,521
Gross amounts recognized	685,488	447,201
Derivative liabilities - Fair value	30,403	16,886
Interest rate contracts | Customer-related positions:
Derivative [Line Items]
Notional amount	8,684,404	8,420,422
Gross amounts recognized	691	1,438
Derivative liabilities - Fair value	614,445	561,547
Interest rate contracts | Other economic hedges:
Derivative [Line Items]
Notional amount	8,771,698	8,511,992
Gross amounts recognized	622,108	425,390
Derivative liabilities - Fair value	1,475	3,282
Interest rate contracts | Swaps | Customer-related positions:
Derivative [Line Items]
Notional amount	6,890,450	6,656,491
Gross amounts recognized	691	1,438
Derivative liabilities - Fair value	584,962	521,719
Interest rate contracts | Swaps | Other economic hedges:
Derivative [Line Items]
Notional amount	6,916,364	6,683,828
Gross amounts recognized	592,177	384,201
Derivative liabilities - Fair value	1,119	2,047
Interest rate contracts | Written options | Customer-related positions:
Derivative [Line Items]
Notional amount	1,486,958	1,548,158
Gross amounts recognized	0	0
Derivative liabilities - Fair value	21,864	30,904
Interest rate contracts | Written options | Other economic hedges:
Derivative [Line Items]
Notional amount	30,690	32,117
Gross amounts recognized	0	0
Derivative liabilities - Fair value	356	1,235
Interest rate contracts | Collars and corridors | Customer-related positions:
Derivative [Line Items]
Notional amount	306,996	215,773
Gross amounts recognized	0	0
Derivative liabilities - Fair value	7,619	8,924
Interest rate contracts | Collars and corridors | Other economic hedges:
Derivative [Line Items]
Notional amount	306,996	215,772
Gross amounts recognized	7,646	8,956
Derivative liabilities - Fair value	0	0
Interest rate contracts | Purchased options | Other economic hedges:
Derivative [Line Items]
Notional amount	1,517,648	1,580,275
Gross amounts recognized	22,285	32,233
Derivative liabilities - Fair value	0	0
Foreign exchange contracts | Customer-related positions:
Derivative [Line Items]
Notional amount	2,698,754	1,738,362
Gross amounts recognized	33,288	25,708
Derivative liabilities - Fair value	48,171	30,513
Foreign exchange contracts | Other economic hedges:
Derivative [Line Items]
Notional amount	2,506,253	1,244,529
Gross amounts recognized	63,380	21,811
Derivative liabilities - Fair value	28,928	13,604
Foreign exchange contracts | Swaps | Customer-related positions:
Derivative [Line Items]
Notional amount	2,494,517	623,143
Gross amounts recognized	16,282	6,629
Derivative liabilities - Fair value	23,687	12,178
Foreign exchange contracts | Swaps | Other economic hedges:
Derivative [Line Items]
Notional amount	1,303,755	1,044,900
Gross amounts recognized	62,928	18,516
Derivative liabilities - Fair value	22,985	11,447
Foreign exchange contracts | Forwards and spot | Customer-related positions:
Derivative [Line Items]
Notional amount	62,237	993,588
Gross amounts recognized	11,376	17,009
Derivative liabilities - Fair value	24,484	18,090
Foreign exchange contracts | Forwards and spot | Other economic hedges:
Derivative [Line Items]
Notional amount	1,060,498	77,998
Gross amounts recognized	452	3,050
Derivative liabilities - Fair value	313	87
Foreign exchange contracts | Other | Customer-related positions:
Derivative [Line Items]
Notional amount	142,000	121,631
Gross amounts recognized	5,630	2,070
Derivative liabilities - Fair value	0	245
Foreign exchange contracts | Other | Other economic hedges:
Derivative [Line Items]
Notional amount	142,000	121,631
Gross amounts recognized	0	245
Derivative liabilities - Fair value	5,630	2,070
Commodity contracts | Customer-related positions:
Derivative [Line Items]
Gross amounts recognized	85,388	171,082
Derivative liabilities - Fair value	$ 68,964	$ 100,333
Commodity contracts | Customer-related positions: | Crude oil
Derivative [Line Items]
Derivative, nonmonetary notional amount, energy measure | Boe	10,320	5,476
Gross amounts recognized	$ 52,095	$ 56,551
Derivative liabilities - Fair value	$ 1,836	$ 8,808
Commodity contracts | Customer-related positions: | Natural gas
Derivative [Line Items]
Derivative, nonmonetary notional amount, energy measure | MMBTU	182,658	124,662
Gross amounts recognized	$ 33,293	$ 114,531
Derivative liabilities - Fair value	67,128	91,525
Commodity contracts | Other economic hedges:
Derivative [Line Items]
Gross amounts recognized	52,112	90,531
Derivative liabilities - Fair value	$ 74,891	$ 158,275
Commodity contracts | Other economic hedges: | Crude oil
Derivative [Line Items]
Derivative, nonmonetary notional amount, energy measure | Boe	10,352	6,529
Gross amounts recognized	$ 2,165	$ 8,313
Derivative liabilities - Fair value	$ 43,184	$ 49,432
Commodity contracts | Other economic hedges: | Natural gas
Derivative [Line Items]
Derivative, nonmonetary notional amount, energy measure | MMBTU	180,363	123,042
Gross amounts recognized	$ 49,947	$ 82,218
Derivative liabilities - Fair value	$ 31,707	$ 108,843
Commodity contracts | Swaps | Customer-related positions: | Crude oil
Derivative [Line Items]
Derivative, nonmonetary notional amount, energy measure | Boe	3,958	2,465
Gross amounts recognized	$ 27,543	$ 39,955
Derivative liabilities - Fair value	$ 1,717	$ 6,178
Commodity contracts | Swaps | Customer-related positions: | Natural gas
Derivative [Line Items]
Derivative, nonmonetary notional amount, energy measure | MMBTU	129,940	92,590
Gross amounts recognized	$ 32,428	$ 112,314
Derivative liabilities - Fair value	$ 55,387	$ 73,208
Commodity contracts | Swaps | Other economic hedges: | Crude oil
Derivative [Line Items]
Derivative, nonmonetary notional amount, energy measure | Boe	3,990	2,587
Gross amounts recognized	$ 2,165	$ 6,935
Derivative liabilities - Fair value	$ 24,403	$ 36,060
Commodity contracts | Swaps | Other economic hedges: | Natural gas
Derivative [Line Items]
Derivative, nonmonetary notional amount, energy measure | MMBTU	129,405	91,900
Gross amounts recognized	$ 42,804	$ 69,767
Derivative liabilities - Fair value	$ 31,289	$ 106,883
Commodity contracts | Written options | Customer-related positions: | Crude oil
Derivative [Line Items]
Derivative, nonmonetary notional amount, energy measure | Boe	0	0
Gross amounts recognized	$ 0	$ 558
Derivative liabilities - Fair value	$ 0	$ 0
Commodity contracts | Written options | Customer-related positions: | Natural gas
Derivative [Line Items]
Derivative, nonmonetary notional amount, energy measure | MMBTU	1,955	0
Gross amounts recognized	$ 0	$ 0
Derivative liabilities - Fair value	$ 206	$ 0
Commodity contracts | Purchased options | Other economic hedges: | Crude oil
Derivative [Line Items]
Derivative, nonmonetary notional amount, energy measure | Boe	0	0
Gross amounts recognized	$ 0	$ 0
Derivative liabilities - Fair value	$ 0	$ 516
Commodity contracts | Purchased options | Other economic hedges: | Natural gas
Derivative [Line Items]
Derivative, nonmonetary notional amount, energy measure | MMBTU	1,955	0
Gross amounts recognized	$ 206	$ 0
Derivative liabilities - Fair value	$ 0	$ 0
Commodity contracts | Collars | Customer-related positions: | Crude oil
Derivative [Line Items]
Derivative, nonmonetary notional amount, energy measure | Boe	6,362	3,011
Gross amounts recognized	$ 24,552	$ 16,038
Derivative liabilities - Fair value	$ 119	$ 2,630
Commodity contracts | Collars | Customer-related positions: | Natural gas
Derivative [Line Items]
Derivative, nonmonetary notional amount, energy measure | MMBTU	50,763	32,072
Gross amounts recognized	$ 865	$ 2,217
Derivative liabilities - Fair value	$ 11,535	$ 18,317
Commodity contracts | Collars | Other economic hedges: | Crude oil
Derivative [Line Items]
Derivative, nonmonetary notional amount, energy measure | Boe	6,362	3,942
Gross amounts recognized	$ 0	$ 1,378
Derivative liabilities - Fair value	$ 18,781	$ 12,856
Commodity contracts | Collars | Other economic hedges: | Natural gas
Derivative [Line Items]
Derivative, nonmonetary notional amount, energy measure | MMBTU	49,003	31,142
Gross amounts recognized	$ 6,937	$ 12,451
Derivative liabilities - Fair value	$ 418	$ 1,960

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Derivatives - Net Gains (Losses) on Derivatives Not Designated as Hedging Instruments (Details) - Derivatives not designated as hedging instruments - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Derivative Instruments, Gain (Loss) [Line Items]
Net gains (losses) recognized for derivative not designated as hedging instruments	$ 12,670	$ 8,582	$ 41,862	$ 25,463
Interest rate contracts | Interest rate contracts and other derivative income
Derivative Instruments, Gain (Loss) [Line Items]
Net gains (losses) recognized for derivative not designated as hedging instruments	5,283	4,870	4,022	18,439
Foreign exchange contracts | Foreign exchange income
Derivative Instruments, Gain (Loss) [Line Items]
Net gains (losses) recognized for derivative not designated as hedging instruments	7,267	3,831	37,607	6,596
Credit contracts | Interest rate contracts and other derivative income
Derivative Instruments, Gain (Loss) [Line Items]
Net gains (losses) recognized for derivative not designated as hedging instruments	4	50	11	114
Equity contracts | Lending fees
Derivative Instruments, Gain (Loss) [Line Items]
Net gains (losses) recognized for derivative not designated as hedging instruments	89	(13)	29	175
Commodity contracts | Interest rate contracts and other derivative income
Derivative Instruments, Gain (Loss) [Line Items]
Net gains (losses) recognized for derivative not designated as hedging instruments	$ 27	$ (156)	$ 193	$ 139

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Derivatives - Offsetting of Derivatives (Details) - USD ($)	Sep. 30, 2023	Dec. 31, 2022
Derivative assets
Derivative assets - Fair value	$ 862,316,000	$ 755,328,000
Less: Master netting agreements	(260,648,000)	(242,745,000)
Less: Cash collateral received	(269,683,000)	(372,038,000)
Net derivative assets	331,985,000	140,545,000
Less: Security Collateral Received	(280,043,000)	(60,567,000)
Net Amount	51,942,000	79,978,000
Contracts not subject to master netting arrangements, gross amounts recognized	1,800,000	2,100,000
Derivative, cash collateral received, including amount offset by fair value assets, and excess cash amount	(275,700,000)	(384,900,000)
Amount used to offset against derivative assets	(269,683,000)	(372,038,000)
Derivative liabilities
Gross amounts recognized	948,387,000	887,264,000
Less: Master netting agreements	(260,648,000)	(242,745,000)
Less: Cash collateral received	(2,225,000)	0
Net derivative liabilities	685,514,000	644,519,000
Less: Security Collateral Pledged	0	(38,438,000)
Net Amount	685,514,000	606,081,000
Contracts not subject to master netting arrangements, gross amounts recognized	16,200,000	566,000
Derivative, cash collateral posted against derivative liabilities, including amount offset the derivative fair value liabilities, and excess cash amount	3,100,000	490,000
Amount used to offset against derivative liabilities	$ (2,225,000)	$ 0

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Loans Receivable and Allowance for Credit Losses - Composition of Loans Held-for-Investment (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Jun. 30, 2023	Jan. 01, 2023	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Dec. 31, 2021
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Loans held-for-investment	$ 50,907,184			$ 48,202,430
Allowance for loan losses	(655,523)	$ (635,400)	$ (601,673)	(595,645)	$ (582,517)	$ (563,270)	$ (541,579)
Loans held-for-investment, net	50,251,661			47,606,785
Net deferred loan fees and net unamortized premiums	(72,000)			(70,400)
Commercial lending
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Loans held-for-investment	36,229,707			34,780,453
Commercial lending | Commercial and industrial (“C&I”)
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Loans held-for-investment	15,864,042			15,711,095
Allowance for loan losses	(383,677)	(375,333)	(377,383)		(371,749)	(363,282)	(338,252)
Commercial lending | CRE
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Loans held-for-investment	14,667,378			13,857,870
Allowance for loan losses	(178,040)	(168,505)	(150,201)		(145,301)	(140,245)	(150,940)
Commercial lending | Real estate loan | Multifamily residential
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Loans held-for-investment	4,900,097			4,573,068
Allowance for loan losses	(24,162)	(22,938)	(23,379)		(25,680)	(26,552)	(14,400)
Commercial lending | Construction and land
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Loans held-for-investment	798,190			638,420
Allowance for loan losses	(9,216)	(11,325)	(9,109)		(7,506)	(6,682)	(15,468)
Commercial lending | Total CRE
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Loans held-for-investment	20,365,665			19,069,358
Consumer lending
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Loans held-for-investment	14,677,477			13,421,977
Consumer lending | Real estate loan | Single-family residential
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Loans held-for-investment	12,836,558			11,223,027
Allowance for loan losses	(54,930)	(51,513)	(35,565)		(27,263)	(21,840)	(17,160)
Consumer lending | HELOCs
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Loans held-for-investment	1,776,665			2,122,655
Allowance for loan losses	(3,795)	(4,526)	(4,476)		(3,324)	(3,220)	(3,435)
Consumer lending | Total residential mortgage
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Loans held-for-investment	14,613,223			13,345,682
Consumer lending | Other consumer
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Loans held-for-investment	64,254			$ 76,295
Allowance for loan losses	$ (1,703)	$ (1,260)	$ (1,560)		$ (1,694)	$ (1,449)	$ (1,924)

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Loans Receivable and Allowance for Credit Losses - Composition of Loans Held-for-Investment- Narrative (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Accrued interest receivable	$ 249,300	$ 208,400
Total	50,907,184	48,202,430
Asset Pledged as Collateral
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total	$ 35,180,000	$ 28,300,000

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Loans Receivable and Allowance for Credit Losses - Credit Risk Ratings , Vintage Years and/or Gross Write-offs for Loans Held-for-Investment by Portfolio Segment (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items]
Current Fiscal Year	$ 7,090,395,000		$ 7,090,395,000		$ 12,464,897,000
One Year before Current Fiscal Year	11,425,642,000		11,425,642,000		8,204,714,000
Two Years before Current Fiscal Year	7,265,279,000		7,265,279,000		4,810,435,000
Three Years before Current Fiscal Year	4,206,435,000		4,206,435,000		3,871,740,000
Four Years before Current Fiscal Year	3,487,616,000		3,487,616,000		2,936,646,000
Prior	6,094,731,000		6,094,731,000		4,261,980,000
Revolving Loans	11,129,338,000		11,129,338,000		11,460,495,000
Revolving Loans Converted to Term Loans	207,748,000		207,748,000		191,523,000
Total	50,907,184,000		50,907,184,000		48,202,430,000
YTD gross write-offs Total	3,600,000	$ 8,700,000	4,200,000	$ 8,900,000
Pass
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items]
Current Fiscal Year	6,959,365,000		6,959,365,000		12,365,799,000
One Year before Current Fiscal Year	11,283,760,000		11,283,760,000		8,084,723,000
Two Years before Current Fiscal Year	7,094,524,000		7,094,524,000		4,590,045,000
Three Years before Current Fiscal Year	4,046,247,000		4,046,247,000		3,791,578,000
Four Years before Current Fiscal Year	3,425,935,000		3,425,935,000		2,786,218,000
Prior	5,852,417,000		5,852,417,000		4,158,181,000
Revolving Loans	11,020,577,000		11,020,577,000		11,359,948,000
Revolving Loans Converted to Term Loans	202,674,000		202,674,000		169,958,000
Total	49,885,499,000		49,885,499,000		47,306,450,000
Pass | Federal Housing Administration Loan
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items]
Financing Receivable, 90 Days or More Past Due, Still Accruing	638,000		638,000		818,000
Criticized (accrual)
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items]
Current Fiscal Year	127,030,000		127,030,000		80,235,000
One Year before Current Fiscal Year	128,019,000		128,019,000		96,150,000
Two Years before Current Fiscal Year	166,040,000		166,040,000		208,970,000
Three Years before Current Fiscal Year	147,439,000		147,439,000		76,486,000
Four Years before Current Fiscal Year	52,160,000		52,160,000		142,072,000
Prior	190,131,000		190,131,000		76,117,000
Revolving Loans	106,841,000		106,841,000		99,447,000
Revolving Loans Converted to Term Loans	963,000		963,000		17,795,000
Total	918,623,000		918,623,000		797,272,000
Criticized (nonaccrual)
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items]
Current Fiscal Year	4,000,000		4,000,000		18,863,000
One Year before Current Fiscal Year	13,863,000		13,863,000		23,841,000
Two Years before Current Fiscal Year	4,715,000		4,715,000		11,420,000
Three Years before Current Fiscal Year	12,749,000		12,749,000		3,676,000
Four Years before Current Fiscal Year	9,521,000		9,521,000		8,356,000
Prior	52,183,000		52,183,000		27,682,000
Revolving Loans	1,920,000		1,920,000		1,100,000
Revolving Loans Converted to Term Loans	4,111,000		4,111,000		3,770,000
Total	103,062,000		103,062,000		98,708,000
YTD gross write-offs
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items]
YTD gross write-offs Current Fiscal Year			350,000
YTD gross write-offs One Year before Current Fiscal Year			28,000
YTD gross write-offs Two Years before Current Fiscal Year			161,000
YTD gross write-offs Three Years before Current Fiscal Year			15,000
YTD gross write-offs Four Years before Current Fiscal Year			6,606,000
YTD gross write-offs Prior			12,257,000
YTD gross write-offs Revolving Loans			0
YTD gross write-offs Revolving Loans Converted to Term Loans			6,000
YTD gross write-offs Total			19,423,000
Consumer Loan
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items]
Converted to term loan	20,600,000	375,000	27,700,000	375,000
Commercial lending
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items]
Current Fiscal Year	4,682,705,000		4,682,705,000		8,898,251,000
One Year before Current Fiscal Year	8,009,201,000		8,009,201,000		5,745,996,000
Two Years before Current Fiscal Year	4,932,591,000		4,932,591,000		3,020,575,000
Three Years before Current Fiscal Year	2,563,247,000		2,563,247,000		2,761,676,000
Four Years before Current Fiscal Year	2,470,541,000		2,470,541,000		2,111,867,000
Prior	4,002,714,000		4,002,714,000		2,719,920,000
Revolving Loans	9,484,122,000		9,484,122,000		9,462,895,000
Revolving Loans Converted to Term Loans	84,586,000		84,586,000		59,273,000
Total	36,229,707,000		36,229,707,000		34,780,453,000
Converted to term loan	11,200,000	$ 0	24,600,000	$ 26,400,000
Commercial lending | YTD gross write-offs
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items]
YTD gross write-offs Current Fiscal Year			350,000
YTD gross write-offs One Year before Current Fiscal Year			28,000
YTD gross write-offs Two Years before Current Fiscal Year			161,000
YTD gross write-offs Three Years before Current Fiscal Year			15,000
YTD gross write-offs Four Years before Current Fiscal Year			6,606,000
YTD gross write-offs Prior			12,216,000
YTD gross write-offs Revolving Loans			0
YTD gross write-offs Revolving Loans Converted to Term Loans			0
YTD gross write-offs Total			19,376,000
Commercial lending | Commercial and industrial (“C&I”)
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items]
Current Fiscal Year	1,949,375,000		1,949,375,000		2,922,766,000
One Year before Current Fiscal Year	2,063,639,000		2,063,639,000		2,092,308,000
Two Years before Current Fiscal Year	1,562,103,000		1,562,103,000		682,520,000
Three Years before Current Fiscal Year	408,413,000		408,413,000		426,477,000
Four Years before Current Fiscal Year	291,079,000		291,079,000		170,234,000
Prior	209,498,000		209,498,000		120,853,000
Revolving Loans	9,359,687,000		9,359,687,000		9,275,389,000
Revolving Loans Converted to Term Loans	20,248,000		20,248,000		20,548,000
Total	15,864,042,000		15,864,042,000		15,711,095,000
Commercial lending | Commercial and industrial (“C&I”) | Pass
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items]
Current Fiscal Year	1,858,749,000		1,858,749,000		2,831,834,000
One Year before Current Fiscal Year	1,942,241,000		1,942,241,000		2,053,215,000
Two Years before Current Fiscal Year	1,470,818,000		1,470,818,000		623,026,000
Three Years before Current Fiscal Year	354,650,000		354,650,000		392,013,000
Four Years before Current Fiscal Year	259,342,000		259,342,000		143,970,000
Prior	164,149,000		164,149,000		97,605,000
Revolving Loans	9,254,852,000		9,254,852,000		9,177,401,000
Revolving Loans Converted to Term Loans	20,248,000		20,248,000		20,548,000
Total	15,325,049,000		15,325,049,000		15,339,612,000
Commercial lending | Commercial and industrial (“C&I”) | Criticized (accrual)
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items]
Current Fiscal Year	88,542,000		88,542,000		72,210,000
One Year before Current Fiscal Year	110,918,000		110,918,000		34,296,000
Two Years before Current Fiscal Year	91,272,000		91,272,000		48,761,000
Three Years before Current Fiscal Year	45,069,000		45,069,000		34,221,000
Four Years before Current Fiscal Year	25,603,000		25,603,000		20,646,000
Prior	23,640,000		23,640,000		12,933,000
Revolving Loans	104,802,000		104,802,000		97,988,000
Revolving Loans Converted to Term Loans	0		0		0
Total	489,846,000		489,846,000		321,055,000
Commercial lending | Commercial and industrial (“C&I”) | Criticized (nonaccrual)
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items]
Current Fiscal Year	2,084,000		2,084,000		18,722,000
One Year before Current Fiscal Year	10,480,000		10,480,000		4,797,000
Two Years before Current Fiscal Year	13,000		13,000		10,733,000
Three Years before Current Fiscal Year	8,694,000		8,694,000		243,000
Four Years before Current Fiscal Year	6,134,000		6,134,000		5,618,000
Prior	21,709,000		21,709,000		10,315,000
Revolving Loans	33,000		33,000		0
Revolving Loans Converted to Term Loans	0		0		0
Total	49,147,000		49,147,000		50,428,000
Commercial lending | Commercial and industrial (“C&I”) | YTD gross write-offs
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items]
YTD gross write-offs Current Fiscal Year			350,000
YTD gross write-offs One Year before Current Fiscal Year			28,000
YTD gross write-offs Two Years before Current Fiscal Year			161,000
YTD gross write-offs Three Years before Current Fiscal Year			15,000
YTD gross write-offs Four Years before Current Fiscal Year			6,606,000
YTD gross write-offs Prior			1,684,000
YTD gross write-offs Revolving Loans			0
YTD gross write-offs Revolving Loans Converted to Term Loans			0
YTD gross write-offs Total			8,844,000
Commercial lending | CRE
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items]
Current Fiscal Year	2,103,260,000		2,103,260,000		4,182,298,000
One Year before Current Fiscal Year	4,095,527,000		4,095,527,000		2,484,251,000
Two Years before Current Fiscal Year	2,280,068,000		2,280,068,000		1,664,574,000
Three Years before Current Fiscal Year	1,496,985,000		1,496,985,000		1,811,774,000
Four Years before Current Fiscal Year	1,674,163,000		1,674,163,000		1,562,842,000
Prior	2,852,514,000		2,852,514,000		1,946,298,000
Revolving Loans	101,811,000		101,811,000		167,108,000
Revolving Loans Converted to Term Loans	63,050,000		63,050,000		38,725,000
Total	14,667,378,000		14,667,378,000		13,857,870,000
Commercial lending | CRE | Pass
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items]
Current Fiscal Year	2,066,361,000		2,066,361,000		4,178,780,000
One Year before Current Fiscal Year	4,080,810,000		4,080,810,000		2,404,634,000
Two Years before Current Fiscal Year	2,259,761,000		2,259,761,000		1,505,150,000
Three Years before Current Fiscal Year	1,396,114,000		1,396,114,000		1,771,679,000
Four Years before Current Fiscal Year	1,649,168,000		1,649,168,000		1,471,710,000
Prior	2,722,697,000		2,722,697,000		1,909,925,000
Revolving Loans	101,811,000		101,811,000		165,653,000
Revolving Loans Converted to Term Loans	63,050,000		63,050,000		22,009,000
Total	14,339,772,000		14,339,772,000		13,429,540,000
Commercial lending | CRE | Criticized (accrual)
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items]
Current Fiscal Year	36,899,000		36,899,000		3,518,000
One Year before Current Fiscal Year	14,717,000		14,717,000		60,573,000
Two Years before Current Fiscal Year	20,307,000		20,307,000		159,424,000
Three Years before Current Fiscal Year	100,871,000		100,871,000		40,095,000
Four Years before Current Fiscal Year	24,544,000		24,544,000		91,132,000
Prior	129,658,000		129,658,000		32,173,000
Revolving Loans	0		0		1,455,000
Revolving Loans Converted to Term Loans	0		0		16,716,000
Total	326,996,000		326,996,000		405,086,000
Commercial lending | CRE | Criticized (nonaccrual)
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items]
Current Fiscal Year	0		0		0
One Year before Current Fiscal Year	0		0		19,044,000
Two Years before Current Fiscal Year	0		0		0
Three Years before Current Fiscal Year	0		0		0
Four Years before Current Fiscal Year	451,000		451,000		0
Prior	159,000		159,000		4,200,000
Revolving Loans	0		0		0
Revolving Loans Converted to Term Loans	0		0		0
Total	610,000		610,000		23,244,000
Commercial lending | CRE | YTD gross write-offs
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items]
YTD gross write-offs Current Fiscal Year			0
YTD gross write-offs One Year before Current Fiscal Year			0
YTD gross write-offs Two Years before Current Fiscal Year			0
YTD gross write-offs Three Years before Current Fiscal Year			0
YTD gross write-offs Four Years before Current Fiscal Year			0
YTD gross write-offs Prior			119,000
YTD gross write-offs Revolving Loans			0
YTD gross write-offs Revolving Loans Converted to Term Loans			0
YTD gross write-offs Total			119,000
Commercial lending | Real estate loan | Multifamily residential
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items]
Current Fiscal Year	478,895,000		478,895,000		1,500,289,000
One Year before Current Fiscal Year	1,495,620,000		1,495,620,000		892,598,000
Two Years before Current Fiscal Year	867,946,000		867,946,000		641,677,000
Three Years before Current Fiscal Year	620,117,000		620,117,000		520,321,000
Four Years before Current Fiscal Year	504,487,000		504,487,000		354,320,000
Prior	924,086,000		924,086,000		652,538,000
Revolving Loans	7,658,000		7,658,000		11,325,000
Revolving Loans Converted to Term Loans	1,288,000		1,288,000		0
Total	4,900,097,000		4,900,097,000		4,573,068,000
Commercial lending | Real estate loan | Pass | Multifamily residential
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items]
Current Fiscal Year	478,895,000		478,895,000		1,500,289,000
One Year before Current Fiscal Year	1,495,620,000		1,495,620,000		892,598,000
Two Years before Current Fiscal Year	814,391,000		814,391,000		641,677,000
Three Years before Current Fiscal Year	620,117,000		620,117,000		519,614,000
Four Years before Current Fiscal Year	503,791,000		503,791,000		350,044,000
Prior	893,282,000		893,282,000		625,293,000
Revolving Loans	7,658,000		7,658,000		11,325,000
Revolving Loans Converted to Term Loans	1,288,000		1,288,000		0
Total	4,815,042,000		4,815,042,000		4,540,840,000
Commercial lending | Real estate loan | Criticized (accrual) | Multifamily residential
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items]
Current Fiscal Year	0		0		0
One Year before Current Fiscal Year	0		0		0
Two Years before Current Fiscal Year	53,555,000		53,555,000		0
Three Years before Current Fiscal Year	0		0		707,000
Four Years before Current Fiscal Year	696,000		696,000		4,276,000
Prior	26,124,000		26,124,000		27,076,000
Revolving Loans	0		0		0
Revolving Loans Converted to Term Loans	0		0		0
Total	80,375,000		80,375,000		32,059,000
Commercial lending | Real estate loan | Criticized (nonaccrual) | Multifamily residential
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items]
Current Fiscal Year	0		0		0
One Year before Current Fiscal Year	0		0		0
Two Years before Current Fiscal Year	0		0		0
Three Years before Current Fiscal Year	0		0		0
Four Years before Current Fiscal Year	0		0		0
Prior	4,680,000		4,680,000		169,000
Revolving Loans	0		0		0
Revolving Loans Converted to Term Loans	0		0		0
Total	4,680,000		4,680,000		169,000
Commercial lending | Construction and land
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items]
Current Fiscal Year	151,175,000		151,175,000		292,898,000
One Year before Current Fiscal Year	354,415,000		354,415,000		276,839,000
Two Years before Current Fiscal Year	222,474,000		222,474,000		31,804,000
Three Years before Current Fiscal Year	37,732,000		37,732,000		3,104,000
Four Years before Current Fiscal Year	812,000		812,000		24,471,000
Prior	16,616,000		16,616,000		231,000
Revolving Loans	14,966,000		14,966,000		9,073,000
Revolving Loans Converted to Term Loans	0		0		0
Total	798,190,000		798,190,000		638,420,000
Commercial lending | Construction and land | Pass
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items]
Current Fiscal Year	151,175,000		151,175,000		288,394,000
One Year before Current Fiscal Year	354,415,000		354,415,000		276,839,000
Two Years before Current Fiscal Year	222,474,000		222,474,000		31,804,000
Three Years before Current Fiscal Year	37,732,000		37,732,000		3,104,000
Four Years before Current Fiscal Year	812,000		812,000		2,805,000
Prior	5,475,000		5,475,000		231,000
Revolving Loans	14,966,000		14,966,000		9,073,000
Revolving Loans Converted to Term Loans	0		0		0
Total	787,049,000		787,049,000		612,250,000
Commercial lending | Construction and land | Criticized (accrual)
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items]
Current Fiscal Year					4,504,000
One Year before Current Fiscal Year					0
Two Years before Current Fiscal Year					0
Three Years before Current Fiscal Year					0
Four Years before Current Fiscal Year					21,666,000
Prior					0
Revolving Loans					0
Revolving Loans Converted to Term Loans					0
Total					26,170,000
Commercial lending | Construction and land | Criticized (nonaccrual)
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items]
Current Fiscal Year	0		0
One Year before Current Fiscal Year	0		0
Two Years before Current Fiscal Year	0		0
Three Years before Current Fiscal Year	0		0
Four Years before Current Fiscal Year	0		0
Prior	11,141,000		11,141,000
Revolving Loans	0		0
Revolving Loans Converted to Term Loans	0		0
Total	11,141,000		11,141,000
Commercial lending | Construction and land | YTD gross write-offs
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items]
YTD gross write-offs Current Fiscal Year			0
YTD gross write-offs One Year before Current Fiscal Year			0
YTD gross write-offs Two Years before Current Fiscal Year			0
YTD gross write-offs Three Years before Current Fiscal Year			0
YTD gross write-offs Four Years before Current Fiscal Year			0
YTD gross write-offs Prior			10,413,000
YTD gross write-offs Revolving Loans			0
YTD gross write-offs Revolving Loans Converted to Term Loans			0
YTD gross write-offs Total			10,413,000
Commercial lending | Total CRE
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items]
Current Fiscal Year	2,733,330,000		2,733,330,000		5,975,485,000
One Year before Current Fiscal Year	5,945,562,000		5,945,562,000		3,653,688,000
Two Years before Current Fiscal Year	3,370,488,000		3,370,488,000		2,338,055,000
Three Years before Current Fiscal Year	2,154,834,000		2,154,834,000		2,335,199,000
Four Years before Current Fiscal Year	2,179,462,000		2,179,462,000		1,941,633,000
Prior	3,793,216,000		3,793,216,000		2,599,067,000
Revolving Loans	124,435,000		124,435,000		187,506,000
Revolving Loans Converted to Term Loans	64,338,000		64,338,000		38,725,000
Total	20,365,665,000		20,365,665,000		19,069,358,000
Commercial lending | Total CRE | YTD gross write-offs
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items]
YTD gross write-offs Current Fiscal Year			0
YTD gross write-offs One Year before Current Fiscal Year			0
YTD gross write-offs Two Years before Current Fiscal Year			0
YTD gross write-offs Three Years before Current Fiscal Year			0
YTD gross write-offs Four Years before Current Fiscal Year			0
YTD gross write-offs Prior			10,532,000
YTD gross write-offs Revolving Loans			0
YTD gross write-offs Revolving Loans Converted to Term Loans			0
YTD gross write-offs Total			10,532,000
Consumer lending
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items]
Current Fiscal Year	2,407,690,000		2,407,690,000		3,566,646,000
One Year before Current Fiscal Year	3,416,441,000		3,416,441,000		2,458,718,000
Two Years before Current Fiscal Year	2,332,688,000		2,332,688,000		1,789,860,000
Three Years before Current Fiscal Year	1,643,188,000		1,643,188,000		1,110,064,000
Four Years before Current Fiscal Year	1,017,075,000		1,017,075,000		824,779,000
Prior	2,092,017,000		2,092,017,000		1,542,060,000
Revolving Loans	1,645,216,000		1,645,216,000		1,997,600,000
Revolving Loans Converted to Term Loans	123,162,000		123,162,000		132,250,000
Total	14,677,477,000		14,677,477,000		13,421,977,000
Consumer lending | YTD gross write-offs
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items]
YTD gross write-offs Current Fiscal Year			0
YTD gross write-offs One Year before Current Fiscal Year			0
YTD gross write-offs Two Years before Current Fiscal Year			0
YTD gross write-offs Three Years before Current Fiscal Year			0
YTD gross write-offs Four Years before Current Fiscal Year			0
YTD gross write-offs Prior			41,000
YTD gross write-offs Revolving Loans			0
YTD gross write-offs Revolving Loans Converted to Term Loans			6,000
YTD gross write-offs Total			47,000
Consumer lending | Real estate loan | Single-family residential
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items]
Current Fiscal Year	2,403,208,000		2,403,208,000		3,549,035,000
One Year before Current Fiscal Year	3,395,557,000		3,395,557,000		2,454,992,000
Two Years before Current Fiscal Year	2,326,755,000		2,326,755,000		1,776,685,000
Three Years before Current Fiscal Year	1,637,511,000		1,637,511,000		1,106,630,000
Four Years before Current Fiscal Year	1,014,691,000		1,014,691,000		823,237,000
Prior	2,058,836,000		2,058,836,000		1,512,448,000
Revolving Loans	0		0		0
Revolving Loans Converted to Term Loans	0		0		0
Total	12,836,558,000		12,836,558,000		11,223,027,000
Consumer lending | Real estate loan | Pass | Single-family residential
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items]
Current Fiscal Year	2,400,448,000		2,400,448,000		3,548,894,000
One Year before Current Fiscal Year	3,390,708,000		3,390,708,000		2,453,717,000
Two Years before Current Fiscal Year	2,321,209,000		2,321,209,000		1,775,696,000
Three Years before Current Fiscal Year	1,633,316,000		1,633,316,000		1,101,965,000
Four Years before Current Fiscal Year	1,010,859,000		1,010,859,000		817,164,000
Prior	2,040,678,000		2,040,678,000		1,500,359,000
Revolving Loans	0		0		0
Revolving Loans Converted to Term Loans	0		0		0
Total	12,797,218,000		12,797,218,000		11,197,795,000
Consumer lending | Real estate loan | Criticized (accrual) | Single-family residential
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items]
Current Fiscal Year	844,000		844,000		0
One Year before Current Fiscal Year	1,983,000		1,983,000		1,275,000
Two Years before Current Fiscal Year	844,000		844,000		785,000
Three Years before Current Fiscal Year	1,499,000		1,499,000		1,463,000
Four Years before Current Fiscal Year	964,000		964,000		4,352,000
Prior	9,060,000		9,060,000		3,935,000
Revolving Loans	0		0		0
Revolving Loans Converted to Term Loans	0		0		0
Total	15,194,000		15,194,000		11,810,000
Consumer lending | Real estate loan | Criticized (nonaccrual) | Single-family residential
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items]
Current Fiscal Year	1,916,000		1,916,000		141,000
One Year before Current Fiscal Year	2,866,000		2,866,000		0
Two Years before Current Fiscal Year	4,702,000		4,702,000		204,000
Three Years before Current Fiscal Year	2,696,000		2,696,000		3,202,000
Four Years before Current Fiscal Year	2,868,000		2,868,000		1,721,000
Prior	9,098,000		9,098,000		8,154,000
Revolving Loans	0		0		0
Revolving Loans Converted to Term Loans	0		0		0
Total	24,146,000		24,146,000		13,422,000
Consumer lending | HELOCs
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items]
Current Fiscal Year	923,000		923,000		520,000
One Year before Current Fiscal Year	2,746,000		2,746,000		3,589,000
Two Years before Current Fiscal Year	5,798,000		5,798,000		7,819,000
Three Years before Current Fiscal Year	5,677,000		5,677,000		3,434,000
Four Years before Current Fiscal Year	2,384,000		2,384,000		1,542,000
Prior	20,866,000		20,866,000		13,804,000
Revolving Loans	1,615,109,000		1,615,109,000		1,959,697,000
Revolving Loans Converted to Term Loans	123,162,000		123,162,000		132,250,000
Total	1,776,665,000		1,776,665,000		2,122,655,000
Consumer lending | HELOCs | Pass
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items]
Current Fiscal Year	182,000		182,000		520,000
One Year before Current Fiscal Year	1,828,000		1,828,000		3,583,000
Two Years before Current Fiscal Year	5,736,000		5,736,000		7,336,000
Three Years before Current Fiscal Year	4,318,000		4,318,000		3,203,000
Four Years before Current Fiscal Year	1,963,000		1,963,000		525,000
Prior	13,821,000		13,821,000		8,960,000
Revolving Loans	1,611,319,000		1,611,319,000		1,958,692,000
Revolving Loans Converted to Term Loans	118,088,000		118,088,000		127,401,000
Total	1,757,255,000		1,757,255,000		2,110,220,000
Consumer lending | HELOCs | Criticized (accrual)
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items]
Current Fiscal Year	741,000		741,000		0
One Year before Current Fiscal Year	401,000		401,000		6,000
Two Years before Current Fiscal Year	62,000		62,000		0
Three Years before Current Fiscal Year	0		0		0
Four Years before Current Fiscal Year	353,000		353,000		0
Prior	1,649,000		1,649,000		0
Revolving Loans	2,039,000		2,039,000		4,000
Revolving Loans Converted to Term Loans	963,000		963,000		1,079,000
Total	6,208,000		6,208,000		1,089,000
Consumer lending | HELOCs | Criticized (nonaccrual)
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items]
Current Fiscal Year	0		0		0
One Year before Current Fiscal Year	517,000		517,000		0
Two Years before Current Fiscal Year	0		0		483,000
Three Years before Current Fiscal Year	1,359,000		1,359,000		231,000
Four Years before Current Fiscal Year	68,000		68,000		1,017,000
Prior	5,396,000		5,396,000		4,844,000
Revolving Loans	1,751,000		1,751,000		1,001,000
Revolving Loans Converted to Term Loans	4,111,000		4,111,000		3,770,000
Total	13,202,000		13,202,000		11,346,000
Consumer lending | HELOCs | YTD gross write-offs
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items]
YTD gross write-offs Current Fiscal Year			0
YTD gross write-offs One Year before Current Fiscal Year			0
YTD gross write-offs Two Years before Current Fiscal Year			0
YTD gross write-offs Three Years before Current Fiscal Year			0
YTD gross write-offs Four Years before Current Fiscal Year			0
YTD gross write-offs Prior			41,000
YTD gross write-offs Revolving Loans			0
YTD gross write-offs Revolving Loans Converted to Term Loans			6,000
YTD gross write-offs Total			47,000
Consumer lending | Total residential mortgage
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items]
Current Fiscal Year	2,404,131,000		2,404,131,000		3,549,555,000
One Year before Current Fiscal Year	3,398,303,000		3,398,303,000		2,458,581,000
Two Years before Current Fiscal Year	2,332,553,000		2,332,553,000		1,784,504,000
Three Years before Current Fiscal Year	1,643,188,000		1,643,188,000		1,110,064,000
Four Years before Current Fiscal Year	1,017,075,000		1,017,075,000		824,779,000
Prior	2,079,702,000		2,079,702,000		1,526,252,000
Revolving Loans	1,615,109,000		1,615,109,000		1,959,697,000
Revolving Loans Converted to Term Loans	123,162,000		123,162,000		132,250,000
Total	14,613,223,000		14,613,223,000		13,345,682,000
Consumer lending | Total residential mortgage | YTD gross write-offs
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items]
YTD gross write-offs Current Fiscal Year			0
YTD gross write-offs One Year before Current Fiscal Year			0
YTD gross write-offs Two Years before Current Fiscal Year			0
YTD gross write-offs Three Years before Current Fiscal Year			0
YTD gross write-offs Four Years before Current Fiscal Year			0
YTD gross write-offs Prior			41,000
YTD gross write-offs Revolving Loans			0
YTD gross write-offs Revolving Loans Converted to Term Loans			6,000
YTD gross write-offs Total			47,000
Consumer lending | Other consumer
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items]
Current Fiscal Year	3,559,000		3,559,000		17,091,000
One Year before Current Fiscal Year	18,138,000		18,138,000		137,000
Two Years before Current Fiscal Year	135,000		135,000		5,356,000
Three Years before Current Fiscal Year	0		0		0
Four Years before Current Fiscal Year	0		0		0
Prior	12,315,000		12,315,000		15,808,000
Revolving Loans	30,107,000		30,107,000		37,903,000
Revolving Loans Converted to Term Loans	0		0		0
Total	64,254,000		64,254,000		76,295,000
Consumer lending | Other consumer | Pass
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items]
Current Fiscal Year	3,555,000		3,555,000		17,088,000
One Year before Current Fiscal Year	18,138,000		18,138,000		137,000
Two Years before Current Fiscal Year	135,000		135,000		5,356,000
Three Years before Current Fiscal Year	0		0		0
Four Years before Current Fiscal Year	0		0		0
Prior	12,315,000		12,315,000		15,808,000
Revolving Loans	29,971,000		29,971,000		37,804,000
Revolving Loans Converted to Term Loans	0		0		0
Total	64,114,000		64,114,000		76,193,000
Consumer lending | Other consumer | Criticized (accrual)
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items]
Current Fiscal Year	4,000		4,000		3,000
One Year before Current Fiscal Year	0		0		0
Two Years before Current Fiscal Year	0		0		0
Three Years before Current Fiscal Year	0		0		0
Four Years before Current Fiscal Year	0		0		0
Prior	0		0		0
Revolving Loans	0		0		0
Revolving Loans Converted to Term Loans	0		0		0
Total	4,000		4,000		3,000
Consumer lending | Other consumer | Criticized (nonaccrual)
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items]
Current Fiscal Year	0		0		0
One Year before Current Fiscal Year	0		0		0
Two Years before Current Fiscal Year	0		0		0
Three Years before Current Fiscal Year	0		0		0
Four Years before Current Fiscal Year	0		0		0
Prior	0		0		0
Revolving Loans	136,000		136,000		99,000
Revolving Loans Converted to Term Loans	0		0		0
Total	$ 136,000		$ 136,000		$ 99,000

XML

Loans Receivable and Allowance for Credit Losses - Aging Analysis on Loans Held-for-Investment (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Current, Past Due or Nonaccrual Loans
Financing receivable, excluding accrued interest, modified, after 12 months	$ 50,907,184	$ 48,202,430
Total Nonaccrual Loans	103,700	99,526
Current Accruing Loans
Current, Past Due or Nonaccrual Loans
Financing receivable, excluding accrued interest, modified, after 12 months	50,709,575	48,040,733
Total Accruing Past Due Loans
Current, Past Due or Nonaccrual Loans
Financing receivable, excluding accrued interest, modified, after 12 months	93,909	62,171
Accruing Loans 30-59 Days Past Due
Current, Past Due or Nonaccrual Loans
Financing receivable, excluding accrued interest, modified, after 12 months	70,959	42,677
Accruing Loans 60-89 Days Past Due
Current, Past Due or Nonaccrual Loans
Financing receivable, excluding accrued interest, modified, after 12 months	22,950	19,494
Commercial lending
Current, Past Due or Nonaccrual Loans
Financing receivable, excluding accrued interest, modified, after 12 months	36,229,707	34,780,453
Total Nonaccrual Loans	65,578	73,841
Commercial lending | Current Accruing Loans
Current, Past Due or Nonaccrual Loans
Financing receivable, excluding accrued interest, modified, after 12 months	36,127,081	34,682,072
Commercial lending | Total Accruing Past Due Loans
Current, Past Due or Nonaccrual Loans
Financing receivable, excluding accrued interest, modified, after 12 months	37,048	24,540
Commercial lending | Accruing Loans 30-59 Days Past Due
Current, Past Due or Nonaccrual Loans
Financing receivable, excluding accrued interest, modified, after 12 months	36,293	21,345
Commercial lending | Accruing Loans 60-89 Days Past Due
Current, Past Due or Nonaccrual Loans
Financing receivable, excluding accrued interest, modified, after 12 months	755	3,195
Commercial lending | Commercial and industrial (“C&I”)
Current, Past Due or Nonaccrual Loans
Financing receivable, excluding accrued interest, modified, after 12 months	15,864,042	15,711,095
Total Nonaccrual Loans	49,147	50,428
Commercial lending | Commercial and industrial (“C&I”) | Current Accruing Loans
Current, Past Due or Nonaccrual Loans
Financing receivable, excluding accrued interest, modified, after 12 months	15,781,468	15,651,312
Commercial lending | Commercial and industrial (“C&I”) | Total Accruing Past Due Loans
Current, Past Due or Nonaccrual Loans
Financing receivable, excluding accrued interest, modified, after 12 months	33,427	9,355
Commercial lending | Commercial and industrial (“C&I”) | Accruing Loans 30-59 Days Past Due
Current, Past Due or Nonaccrual Loans
Financing receivable, excluding accrued interest, modified, after 12 months	33,195	6,482
Commercial lending | Commercial and industrial (“C&I”) | Accruing Loans 60-89 Days Past Due
Current, Past Due or Nonaccrual Loans
Financing receivable, excluding accrued interest, modified, after 12 months	232	2,873
Commercial lending | CRE
Current, Past Due or Nonaccrual Loans
Financing receivable, excluding accrued interest, modified, after 12 months	14,667,378	13,857,870
Total Nonaccrual Loans	610	23,244
Commercial lending | CRE | Current Accruing Loans
Current, Past Due or Nonaccrual Loans
Financing receivable, excluding accrued interest, modified, after 12 months	14,664,230	13,820,441
Commercial lending | CRE | Total Accruing Past Due Loans
Current, Past Due or Nonaccrual Loans
Financing receivable, excluding accrued interest, modified, after 12 months	2,538	14,185
Commercial lending | CRE | Accruing Loans 30-59 Days Past Due
Current, Past Due or Nonaccrual Loans
Financing receivable, excluding accrued interest, modified, after 12 months	2,015	14,185
Commercial lending | CRE | Accruing Loans 60-89 Days Past Due
Current, Past Due or Nonaccrual Loans
Financing receivable, excluding accrued interest, modified, after 12 months	523	0
Commercial lending | Real estate loan | Multifamily residential
Current, Past Due or Nonaccrual Loans
Financing receivable, excluding accrued interest, modified, after 12 months	4,900,097	4,573,068
Total Nonaccrual Loans	4,680	169
Commercial lending | Real estate loan | Current Accruing Loans | Multifamily residential
Current, Past Due or Nonaccrual Loans
Financing receivable, excluding accrued interest, modified, after 12 months	4,894,334	4,571,899
Commercial lending | Real estate loan | Total Accruing Past Due Loans | Multifamily residential
Current, Past Due or Nonaccrual Loans
Financing receivable, excluding accrued interest, modified, after 12 months	1,083	1,000
Commercial lending | Real estate loan | Accruing Loans 30-59 Days Past Due | Multifamily residential
Current, Past Due or Nonaccrual Loans
Financing receivable, excluding accrued interest, modified, after 12 months	1,083	678
Commercial lending | Real estate loan | Accruing Loans 60-89 Days Past Due | Multifamily residential
Current, Past Due or Nonaccrual Loans
Financing receivable, excluding accrued interest, modified, after 12 months	0	322
Commercial lending | Construction and land
Current, Past Due or Nonaccrual Loans
Financing receivable, excluding accrued interest, modified, after 12 months	798,190	638,420
Total Nonaccrual Loans	11,141	0
Commercial lending | Construction and land | Current Accruing Loans
Current, Past Due or Nonaccrual Loans
Financing receivable, excluding accrued interest, modified, after 12 months	787,049	638,420
Commercial lending | Construction and land | Total Accruing Past Due Loans
Current, Past Due or Nonaccrual Loans
Financing receivable, excluding accrued interest, modified, after 12 months	0	0
Commercial lending | Construction and land | Accruing Loans 30-59 Days Past Due
Current, Past Due or Nonaccrual Loans
Financing receivable, excluding accrued interest, modified, after 12 months	0	0
Commercial lending | Construction and land | Accruing Loans 60-89 Days Past Due
Current, Past Due or Nonaccrual Loans
Financing receivable, excluding accrued interest, modified, after 12 months	0	0
Commercial lending | Total CRE
Current, Past Due or Nonaccrual Loans
Financing receivable, excluding accrued interest, modified, after 12 months	20,365,665	19,069,358
Total Nonaccrual Loans	16,431	23,413
Commercial lending | Total CRE | Current Accruing Loans
Current, Past Due or Nonaccrual Loans
Financing receivable, excluding accrued interest, modified, after 12 months	20,345,613	19,030,760
Commercial lending | Total CRE | Total Accruing Past Due Loans
Current, Past Due or Nonaccrual Loans
Financing receivable, excluding accrued interest, modified, after 12 months	3,621	15,185
Commercial lending | Total CRE | Accruing Loans 30-59 Days Past Due
Current, Past Due or Nonaccrual Loans
Financing receivable, excluding accrued interest, modified, after 12 months	3,098	14,863
Commercial lending | Total CRE | Accruing Loans 60-89 Days Past Due
Current, Past Due or Nonaccrual Loans
Financing receivable, excluding accrued interest, modified, after 12 months	523	322
Consumer lending
Current, Past Due or Nonaccrual Loans
Financing receivable, excluding accrued interest, modified, after 12 months	14,677,477	13,421,977
Total Nonaccrual Loans	38,122	25,685
Consumer lending | Current Accruing Loans
Current, Past Due or Nonaccrual Loans
Financing receivable, excluding accrued interest, modified, after 12 months	14,582,494	13,358,661
Consumer lending | Total Accruing Past Due Loans
Current, Past Due or Nonaccrual Loans
Financing receivable, excluding accrued interest, modified, after 12 months	56,861	37,631
Consumer lending | Accruing Loans 30-59 Days Past Due
Current, Past Due or Nonaccrual Loans
Financing receivable, excluding accrued interest, modified, after 12 months	34,666	21,332
Consumer lending | Accruing Loans 60-89 Days Past Due
Current, Past Due or Nonaccrual Loans
Financing receivable, excluding accrued interest, modified, after 12 months	22,195	16,299
Consumer lending | Real estate loan | Single-family residential
Current, Past Due or Nonaccrual Loans
Financing receivable, excluding accrued interest, modified, after 12 months	12,836,558	11,223,027
Total Nonaccrual Loans	24,784	14,240
Consumer lending | Real estate loan | Current Accruing Loans | Single-family residential
Current, Past Due or Nonaccrual Loans
Financing receivable, excluding accrued interest, modified, after 12 months	12,771,661	11,183,134
Consumer lending | Real estate loan | Total Accruing Past Due Loans | Single-family residential
Current, Past Due or Nonaccrual Loans
Financing receivable, excluding accrued interest, modified, after 12 months	40,113	25,653
Consumer lending | Real estate loan | Accruing Loans 30-59 Days Past Due | Single-family residential
Current, Past Due or Nonaccrual Loans
Financing receivable, excluding accrued interest, modified, after 12 months	24,141	13,523
Consumer lending | Real estate loan | Accruing Loans 60-89 Days Past Due | Single-family residential
Current, Past Due or Nonaccrual Loans
Financing receivable, excluding accrued interest, modified, after 12 months	15,972	12,130
Consumer lending | HELOCs
Current, Past Due or Nonaccrual Loans
Financing receivable, excluding accrued interest, modified, after 12 months	1,776,665	2,122,655
Total Nonaccrual Loans	13,202	11,346
Consumer lending | HELOCs | Current Accruing Loans
Current, Past Due or Nonaccrual Loans
Financing receivable, excluding accrued interest, modified, after 12 months	1,746,841	2,102,523
Consumer lending | HELOCs | Total Accruing Past Due Loans
Current, Past Due or Nonaccrual Loans
Financing receivable, excluding accrued interest, modified, after 12 months	16,622	8,786
Consumer lending | HELOCs | Accruing Loans 30-59 Days Past Due
Current, Past Due or Nonaccrual Loans
Financing receivable, excluding accrued interest, modified, after 12 months	10,416	7,700
Consumer lending | HELOCs | Accruing Loans 60-89 Days Past Due
Current, Past Due or Nonaccrual Loans
Financing receivable, excluding accrued interest, modified, after 12 months	6,206	1,086
Consumer lending | Total residential mortgage
Current, Past Due or Nonaccrual Loans
Financing receivable, excluding accrued interest, modified, after 12 months	14,613,223	13,345,682
Total Nonaccrual Loans	37,986	25,586
Consumer lending | Total residential mortgage | Current Accruing Loans
Current, Past Due or Nonaccrual Loans
Financing receivable, excluding accrued interest, modified, after 12 months	14,518,502	13,285,657
Consumer lending | Total residential mortgage | Total Accruing Past Due Loans
Current, Past Due or Nonaccrual Loans
Financing receivable, excluding accrued interest, modified, after 12 months	56,735	34,439
Consumer lending | Total residential mortgage | Accruing Loans 30-59 Days Past Due
Current, Past Due or Nonaccrual Loans
Financing receivable, excluding accrued interest, modified, after 12 months	34,557	21,223
Consumer lending | Total residential mortgage | Accruing Loans 60-89 Days Past Due
Current, Past Due or Nonaccrual Loans
Financing receivable, excluding accrued interest, modified, after 12 months	22,178	13,216
Consumer lending | Other consumer
Current, Past Due or Nonaccrual Loans
Financing receivable, excluding accrued interest, modified, after 12 months	64,254	76,295
Total Nonaccrual Loans	136	99
Consumer lending | Other consumer | Current Accruing Loans
Current, Past Due or Nonaccrual Loans
Financing receivable, excluding accrued interest, modified, after 12 months	63,992	73,004
Consumer lending | Other consumer | Total Accruing Past Due Loans
Current, Past Due or Nonaccrual Loans
Financing receivable, excluding accrued interest, modified, after 12 months	126	3,192
Consumer lending | Other consumer | Accruing Loans 30-59 Days Past Due
Current, Past Due or Nonaccrual Loans
Financing receivable, excluding accrued interest, modified, after 12 months	109	109
Consumer lending | Other consumer | Accruing Loans 60-89 Days Past Due
Current, Past Due or Nonaccrual Loans
Financing receivable, excluding accrued interest, modified, after 12 months	$ 17	$ 3,083

XML

Loans Receivable and Allowance for Credit Losses - Amortized Cost of Loans on Nonaccrual Status (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Financing Receivable, Nonaccrual [Line Items]
Total nonaccrual loans with no related allowance for loan losses	$ 59,876	$ 44,585
Commercial lending
Financing Receivable, Nonaccrual [Line Items]
Total nonaccrual loans with no related allowance for loan losses	44,712	34,342
Commercial lending | Commercial and industrial (“C&I”)
Financing Receivable, Nonaccrual [Line Items]
Total nonaccrual loans with no related allowance for loan losses	29,336	11,398
Commercial lending | CRE
Financing Receivable, Nonaccrual [Line Items]
Total nonaccrual loans with no related allowance for loan losses	0	22,944
Commercial lending | Real estate loan | Multifamily residential
Financing Receivable, Nonaccrual [Line Items]
Total nonaccrual loans with no related allowance for loan losses	4,235	0
Commercial lending | Construction and land
Financing Receivable, Nonaccrual [Line Items]
Total nonaccrual loans with no related allowance for loan losses	11,141	0
Consumer lending
Financing Receivable, Nonaccrual [Line Items]
Total nonaccrual loans with no related allowance for loan losses	15,164	10,243
Consumer lending | Real estate loan | Single-family residential
Financing Receivable, Nonaccrual [Line Items]
Total nonaccrual loans with no related allowance for loan losses	6,681	2,998
Consumer lending | HELOCs
Financing Receivable, Nonaccrual [Line Items]
Total nonaccrual loans with no related allowance for loan losses	$ 8,483	$ 7,245

XML

Loans Receivable and Allowance for Credit Losses - Loans Receivable Narrative (Details) - USD ($)	Sep. 30, 2023	Dec. 31, 2022
Foreclosed assets
Other assets, foreclosed assets	$ 0	$ 270,000
Residential real estate properties
Foreclosed assets
Recorded investment in consumer mortgage loans secured by residential real estate properties for which formal foreclosure proceedings were in process	$ 9,900,000	$ 7,500,000

XML

Loans Receivable and Allowance for Credit Losses - Modifications of Outstanding Balance (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2023
Loans Modified as TDRs
Total	$ 31,475	$ 122,678
Term Extension
Loans Modified as TDRs
Total	15,151	58,099
Payment Delay
Loans Modified as TDRs
Total	14,547	28,810
Term Extension/ Payment Delay
Loans Modified as TDRs
Total	1,594	2,862
Rate Reduction/ Term Extension
Loans Modified as TDRs
Total	0	32,724
Rate Reduction /Payment Delay
Loans Modified as TDRs
Total	183	183
Commercial lending
Loans Modified as TDRs
Total	26,754	111,616
Commercial lending | Term Extension
Loans Modified as TDRs
Total	15,151	58,099
Commercial lending | Payment Delay
Loans Modified as TDRs
Total	11,603	20,793
Commercial lending | Term Extension/ Payment Delay
Loans Modified as TDRs
Total	0	0
Commercial lending | Rate Reduction/ Term Extension
Loans Modified as TDRs
Total	0	32,724
Commercial lending | Rate Reduction /Payment Delay
Loans Modified as TDRs
Total	0	0
Commercial lending | Commercial and industrial (“C&I”)
Loans Modified as TDRs
Total	$ 13,285	$ 64,913
Modification as a % of Loan Class	0.08%	0.41%
Commercial lending | Commercial and industrial (“C&I”) | Term Extension
Loans Modified as TDRs
Total	$ 1,682	$ 44,120
Commercial lending | Commercial and industrial (“C&I”) | Payment Delay
Loans Modified as TDRs
Total	11,603	20,793
Commercial lending | Commercial and industrial (“C&I”) | Term Extension/ Payment Delay
Loans Modified as TDRs
Total	0	0
Commercial lending | Commercial and industrial (“C&I”) | Rate Reduction/ Term Extension
Loans Modified as TDRs
Total	0	0
Commercial lending | Commercial and industrial (“C&I”) | Rate Reduction /Payment Delay
Loans Modified as TDRs
Total	0	0
Commercial lending | CRE
Loans Modified as TDRs
Total	$ 13,469	$ 46,703
Modification as a % of Loan Class	0.07%	0.23%
Commercial lending | CRE | Term Extension
Loans Modified as TDRs
Total	$ 13,469	$ 13,979
Commercial lending | CRE | Payment Delay
Loans Modified as TDRs
Total	0	0
Commercial lending | CRE | Term Extension/ Payment Delay
Loans Modified as TDRs
Total	0	0
Commercial lending | CRE | Rate Reduction/ Term Extension
Loans Modified as TDRs
Total	0	32,724
Commercial lending | CRE | Rate Reduction /Payment Delay
Loans Modified as TDRs
Total	0	0
Consumer lending
Loans Modified as TDRs
Total	4,721	11,062
Consumer lending | Single-family residential
Loans Modified as TDRs
Total	$ 4,204	$ 9,085
Modification as a % of Loan Class	0.03%	0.07%
Consumer lending | Term Extension
Loans Modified as TDRs
Total	$ 0	$ 0
Consumer lending | Term Extension | Single-family residential
Loans Modified as TDRs
Total	0	0
Consumer lending | Payment Delay
Loans Modified as TDRs
Total	2,944	8,017
Consumer lending | Payment Delay | Single-family residential
Loans Modified as TDRs
Total	2,944	7,276
Consumer lending | Term Extension/ Payment Delay
Loans Modified as TDRs
Total	1,594	2,862
Consumer lending | Term Extension/ Payment Delay | Single-family residential
Loans Modified as TDRs
Total	1,260	1,809
Consumer lending | Rate Reduction/ Term Extension
Loans Modified as TDRs
Total	0	0
Consumer lending | Rate Reduction/ Term Extension | Single-family residential
Loans Modified as TDRs
Total	0	0
Consumer lending | Rate Reduction /Payment Delay
Loans Modified as TDRs
Total	183	183
Consumer lending | Rate Reduction /Payment Delay | Single-family residential
Loans Modified as TDRs
Total	0	0
Consumer lending | HELOCs
Loans Modified as TDRs
Total	$ 517	$ 1,977
Modification as a % of Loan Class	0.03%	0.11%
Consumer lending | HELOCs | Term Extension
Loans Modified as TDRs
Total	$ 0	$ 0
Consumer lending | HELOCs | Payment Delay
Loans Modified as TDRs
Total	0	741
Consumer lending | HELOCs | Term Extension/ Payment Delay
Loans Modified as TDRs
Total	334	1,053
Consumer lending | HELOCs | Rate Reduction/ Term Extension
Loans Modified as TDRs
Total	0	0
Consumer lending | HELOCs | Rate Reduction /Payment Delay
Loans Modified as TDRs
Total	$ 183	$ 183

XML

Loans Receivable and Allowance for Credit Losses - Financial Effects of Loan Modifications (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2023
Principal Forgiveness
Loans Modified as TDRs
Loan modification amount	$ 26	$ 371
Commercial lending | Commercial and industrial (“C&I”) | Principal Forgiveness
Loans Modified as TDRs
Loan modification amount	$ 26	$ 371
Commercial lending | Commercial and industrial (“C&I”) | Term Extension
Loans Modified as TDRs
Weighted average of loans (in years)	3 years	1 year 4 months 28 days
Commercial lending | Commercial and industrial (“C&I”) | Payment Delay
Loans Modified as TDRs
Weighted average of loans (in years)	1 year 6 months 14 days	1 year 1 month 24 days
Commercial lending | CRE
Loans Modified as TDRs
Weighted-Average Interest Rate Reduction		3.00%
Commercial lending | CRE | Term Extension
Loans Modified as TDRs
Weighted average of loans (in years)	1 year 29 days	2 years 1 month 2 days
Consumer lending | Principal Forgiveness | Single-family residential
Loans Modified as TDRs
Loan modification amount	$ 0	$ 0
Weighted-Average Interest Rate Reduction	0.00%	0.00%
Consumer lending | Term Extension | Single-family residential
Loans Modified as TDRs
Weighted average of loans (in years)	10 years	9 years 10 months 28 days
Consumer lending | Payment Delay | Single-family residential
Loans Modified as TDRs
Weighted average of loans (in years)	11 months 15 days	11 months 12 days
Consumer lending | HELOCs | Principal Forgiveness
Loans Modified as TDRs
Loan modification amount	$ 0	$ 0
Weighted-Average Interest Rate Reduction	0.50%	0.50%
Consumer lending | HELOCs | Term Extension
Loans Modified as TDRs
Weighted average of loans (in years)	16 years 8 months 4 days	15 years 4 months 9 days
Consumer lending | HELOCs | Payment Delay
Loans Modified as TDRs
Weighted average of loans (in years)	8 months 15 days	6 months 7 days

XML

Loans Receivable and Allowance for Credit Losses - Loans Modification Narrative (Details) - USD ($)	3 Months Ended	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2023
Loans and Leases Receivable Disclosure [Abstract]
Modification Loans Subsequently Defaulted	$ 0	$ 0

XML

Loans Receivable and Allowance for Credit Losses - Payment Status Recorded Investment (Details) - USD ($)	Sep. 30, 2023	Dec. 31, 2022
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	$ 122,678,000
Commitment to lend	5,800,000	$ 16,200,000
Current Accruing Loans
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	113,850,000
30 - 89 Days Past Due
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	1,931,000
90+ Days Past Due
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	6,897,000
Commercial lending
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	111,616,000
Commercial lending | Current Accruing Loans
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	105,184,000
Commercial lending | 30 - 89 Days Past Due
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	0
Commercial lending | 90+ Days Past Due
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	6,432,000
Commercial lending | Commercial and industrial (“C&I”)
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	64,913,000
Commercial lending | Commercial and industrial (“C&I”) | Current Accruing Loans
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	58,481,000
Commercial lending | Commercial and industrial (“C&I”) | 30 - 89 Days Past Due
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	0
Commercial lending | Commercial and industrial (“C&I”) | 90+ Days Past Due
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	6,432,000
Commercial lending | CRE
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	46,703,000
Commercial lending | CRE | Current Accruing Loans
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	46,703,000
Commercial lending | CRE | 30 - 89 Days Past Due
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	0
Commercial lending | CRE | 90+ Days Past Due
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	0
Consumer lending
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	11,062,000
Consumer lending | Current Accruing Loans
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	8,666,000
Consumer lending | 30 - 89 Days Past Due
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	1,931,000
Consumer lending | 90+ Days Past Due
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	465,000
Consumer lending | Real estate loan | Single-family residential
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	9,085,000
Consumer lending | Real estate loan | Current Accruing Loans | Single-family residential
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	7,430,000
Consumer lending | Real estate loan | 30 - 89 Days Past Due | Single-family residential
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	1,190,000
Consumer lending | Real estate loan | 90+ Days Past Due | Single-family residential
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	465,000
Consumer lending | HELOCs
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	1,977,000
Consumer lending | HELOCs | Current Accruing Loans
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	1,236,000
Consumer lending | HELOCs | 30 - 89 Days Past Due
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	741,000
Consumer lending | HELOCs | 90+ Days Past Due
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	$ 0

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Loans Receivable and Allowance for Credit Losses - Additions to TDRs (Details) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2022 USD ($) loan	Sep. 30, 2022 USD ($) loan
Current, Past Due or Nonaccrual Loans
Number of Loans | loan	2	5
Pre-Modification Outstanding Recorded Investment	$ 561	$ 30,695
Post-modification outstanding recorded investment	565	17,871
Financial Impact	$ 100	$ 16,731
Commercial lending
Current, Past Due or Nonaccrual Loans
Number of Loans | loan	1	4
Pre-Modification Outstanding Recorded Investment	$ 499	$ 30,633
Post-modification outstanding recorded investment	496	17,802
Financial Impact	$ 98	$ 16,729
Commercial lending | Commercial and industrial (“C&I”)
Current, Past Due or Nonaccrual Loans
Number of Loans | loan	1	4
Pre-Modification Outstanding Recorded Investment	$ 499	$ 30,633
Post-modification outstanding recorded investment	496	17,802
Financial Impact	$ 98	$ 16,729
Consumer lending
Current, Past Due or Nonaccrual Loans
Number of Loans | loan	1	1
Pre-Modification Outstanding Recorded Investment	$ 62	$ 62
Post-modification outstanding recorded investment	69	69
Financial Impact	$ 2	$ 2
Consumer lending | HELOCs
Current, Past Due or Nonaccrual Loans
Number of Loans | loan	1	1
Pre-Modification Outstanding Recorded Investment	$ 62	$ 62
Post-modification outstanding recorded investment	69	69
Financial Impact	$ 2	$ 2
Consumer lending | Total residential mortgage
Current, Past Due or Nonaccrual Loans
Number of Loans | loan	1	1
Pre-Modification Outstanding Recorded Investment	$ 62	$ 62
Post-modification outstanding recorded investment	69	69
Financial Impact	$ 2	$ 2

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Loans Receivable and Allowance for Credit Losses - Loans Modified that Subsequently Defaulted (Details)	3 Months Ended	9 Months Ended
	Sep. 30, 2022 USD ($) loan	Sep. 30, 2022 USD ($) loan	Sep. 30, 2023 USD ($)	Dec. 31, 2022 USD ($)
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-modification outstanding recorded investment	$ 565,000	$ 17,871,000
Commitment to lend			$ 5,800,000	$ 16,200,000
Principal Forgiveness
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-modification outstanding recorded investment	565,000	9,678,000
Other Modification
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-modification outstanding recorded investment	0	8,193,000
Commercial lending
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-modification outstanding recorded investment	$ 496,000	$ 17,802,000
Number of Loans | loan	0	3
Recorded Investment	$ 0	$ 14,909,000
Commercial lending | Principal Forgiveness
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-modification outstanding recorded investment	496,000	9,609,000
Commercial lending | Other Modification
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-modification outstanding recorded investment	0	8,193,000
Commercial lending | Commercial and industrial (“C&I”)
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-modification outstanding recorded investment	$ 496,000	$ 17,802,000
Number of Loans | loan	0	2
Recorded Investment	$ 0	$ 13,901,000
Commercial lending | Commercial and industrial (“C&I”) | Principal Forgiveness
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-modification outstanding recorded investment	496,000	9,609,000
Commercial lending | Commercial and industrial (“C&I”) | Other Modification
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-modification outstanding recorded investment	$ 0	$ 8,193,000
Commercial lending | Real estate loan | Multifamily residential
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan	0	1
Recorded Investment	$ 0	$ 1,008,000
Commercial lending | Total CRE
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan	0	1
Recorded Investment	$ 0	$ 1,008,000
Consumer lending
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-modification outstanding recorded investment	69,000	69,000
Consumer lending | Principal Forgiveness
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-modification outstanding recorded investment	69,000	69,000
Consumer lending | Other Modification
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-modification outstanding recorded investment	0	0
Consumer lending | HELOCs
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-modification outstanding recorded investment	69,000	69,000
Consumer lending | HELOCs | Principal Forgiveness
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-modification outstanding recorded investment	69,000	69,000
Consumer lending | HELOCs | Other Modification
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-modification outstanding recorded investment	0	0
Consumer lending | Total residential mortgage
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-modification outstanding recorded investment	69,000	69,000
Consumer lending | Total residential mortgage | Principal Forgiveness
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-modification outstanding recorded investment	69,000	69,000
Consumer lending | Total residential mortgage | Other Modification
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-modification outstanding recorded investment	$ 0	$ 0

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Loans Receivable and Allowance for Credit Losses - Allowance for Credit Losses Narrative (Details) $ in Millions	9 Months Ended
	Sep. 30, 2023 USD ($) qtr	Jun. 30, 2023 qtr	Dec. 31, 2022 USD ($)
Financing Receivable Allowance for Credit Losses
Life time loss rate, period span | qtr	8
Allowance for credit losses | $	$ 689.1		$ 621.9
Increase in allowance for credit losses | $	$ 67.2
Commercial and industrial (“C&I”)
Financing Receivable Allowance for Credit Losses
Life time loss rate, period span | qtr	8	11

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Loans Receivable and Allowance for Credit Losses - Collateral-Dependent Loans Narrative (Details) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Commercial lending
Financing Receivable Allowance for Credit Losses
Collateral dependent loan	$ 18.1	$ 47.4
Consumer lending
Financing Receivable Allowance for Credit Losses
Collateral dependent loan	$ 15.2	$ 13.4

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Loans Receivable and Allowance for Credit Losses - Summary of Activities in Allowance for Loan Losses (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Allowance for loan losses
Allowance for loan losses, December 31, 2022					$ 595,645
Allowance for loan losses, start of period	$ 635,400	$ 563,270	$ 595,645	$ 541,579
Provision for (reversal of) credit losses on loans	38,136	27,274	80,681	51,995
Gross charge-offs	(21,007)	(13,905)	(32,799)	(26,684)
Gross recoveries	2,861	7,264	6,507	18,363
Total net (charge-offs) recoveries	(18,146)	(6,641)	(26,292)	(8,321)
Foreign currency translation adjustment	133	(1,386)	(539)	(2,736)
Allowance for loan losses, end of period	655,523	582,517	655,523	582,517
Commercial lending | Commercial and industrial (“C&I”)
Allowance for loan losses
Allowance for loan losses, December 31, 2022					371,700
Allowance for loan losses, start of period	375,333	363,282		338,252
Provision for (reversal of) credit losses on loans	13,006	9,575	17,587	37,867
Gross charge-offs	(7,074)	(6,894)	(16,309)	(18,322)
Gross recoveries	2,279	7,172	5,555	16,688
Total net (charge-offs) recoveries	(4,795)	278	(10,754)	(1,634)
Foreign currency translation adjustment	133	(1,386)	(539)	(2,736)
Allowance for loan losses, end of period	383,677	371,749	383,677	371,749
Commercial lending | CRE
Allowance for loan losses
Allowance for loan losses, December 31, 2022					149,864
Allowance for loan losses, start of period	168,505	140,245		150,940
Provision for (reversal of) credit losses on loans	12,952	5,299	33,313	(5,013)
Gross charge-offs	(3,466)	(288)	(5,838)	(1,357)
Gross recoveries	49	45	364	731
Total net (charge-offs) recoveries	(3,417)	(243)	(5,474)	(626)
Foreign currency translation adjustment	0	0	0	0
Allowance for loan losses, end of period	178,040	145,301	178,040	145,301
Commercial lending | Residential loan | Multifamily residential
Allowance for loan losses
Allowance for loan losses, December 31, 2022					23,373
Allowance for loan losses, start of period	22,938	26,552		14,400
Provision for (reversal of) credit losses on loans	772	5,047	303	16,680
Gross charge-offs	0	(5,938)	0	(5,947)
Gross recoveries	452	19	480	547
Total net (charge-offs) recoveries	452	(5,919)	480	(5,400)
Foreign currency translation adjustment	0	0	0	0
Allowance for loan losses, end of period	24,162	25,680	24,162	25,680
Commercial lending | Construction and land
Allowance for loan losses
Allowance for loan losses, December 31, 2022					9,109
Allowance for loan losses, start of period	11,325	6,682		15,468
Provision for (reversal of) credit losses on loans	8,302	817	10,507	(8,027)
Gross charge-offs	(10,413)	0	(10,413)	0
Gross recoveries	2	7	13	65
Total net (charge-offs) recoveries	(10,411)	7	(10,400)	65
Foreign currency translation adjustment	0	0	0	0
Allowance for loan losses, end of period	9,216	7,506	9,216	7,506
Consumer lending | Residential loan | Single-family residential
Allowance for loan losses
Allowance for loan losses, December 31, 2022					35,564
Allowance for loan losses, start of period	51,513	21,840		17,160
Provision for (reversal of) credit losses on loans	3,353	6,182	19,296	10,569
Gross charge-offs	0	(775)	0	(775)
Gross recoveries	64	16	69	309
Total net (charge-offs) recoveries	64	(759)	69	(466)
Foreign currency translation adjustment	0	0	0	0
Allowance for loan losses, end of period	54,930	27,263	54,930	27,263
Consumer lending | HELOCs
Allowance for loan losses
Allowance for loan losses, December 31, 2022					4,475
Allowance for loan losses, start of period	4,526	3,220		3,435
Provision for (reversal of) credit losses on loans	(705)	99	(569)	59
Gross charge-offs	(41)	0	(138)	(193)
Gross recoveries	15	5	26	23
Total net (charge-offs) recoveries	(26)	5	(112)	(170)
Foreign currency translation adjustment	0	0	0	0
Allowance for loan losses, end of period	3,795	3,324	3,795	3,324
Consumer lending | Other consumer
Allowance for loan losses
Allowance for loan losses, December 31, 2022					1,560
Allowance for loan losses, start of period	1,260	1,449		1,924
Provision for (reversal of) credit losses on loans	456	255	244	(140)
Gross charge-offs	(13)	(10)	(101)	(90)
Gross recoveries	0	0	0	0
Total net (charge-offs) recoveries	(13)	(10)	(101)	(90)
Foreign currency translation adjustment	0	0	0	0
Allowance for loan losses, end of period	$ 1,703	$ 1,694	1,703	$ 1,694
Accounting Standards Update 2022-02
Allowance for loan losses
Impact of ASU 2022-02 adoption					6,028
Allowance for loan losses, start of period			$ (6,000)
Accounting Standards Update 2022-02 | Commercial lending | Commercial and industrial (“C&I”)
Allowance for loan losses
Impact of ASU 2022-02 adoption					5,683
Accounting Standards Update 2022-02 | Commercial lending | CRE
Allowance for loan losses
Impact of ASU 2022-02 adoption					337
Accounting Standards Update 2022-02 | Commercial lending | Residential loan | Multifamily residential
Allowance for loan losses
Impact of ASU 2022-02 adoption					6
Accounting Standards Update 2022-02 | Commercial lending | Construction and land
Allowance for loan losses
Impact of ASU 2022-02 adoption					0
Accounting Standards Update 2022-02 | Consumer lending | Residential loan | Single-family residential
Allowance for loan losses
Impact of ASU 2022-02 adoption					1
Accounting Standards Update 2022-02 | Consumer lending | HELOCs
Allowance for loan losses
Impact of ASU 2022-02 adoption					1
Accounting Standards Update 2022-02 | Consumer lending | Other consumer
Allowance for loan losses
Impact of ASU 2022-02 adoption					$ 0

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Loans Receivable and Allowance for Credit Losses - Summary of Activities in Allowance for loan losses by Portfolio Segments and Unfunded Credit Commitments (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Allowance for unfunded credit reserves
Allowance for unfunded credit commitments, beginning of period			$ 26,200
Allowance for unfunded credit commitments, end of period	$ 33,600		33,600
Provision for credit losses	42,000	$ 27,000	88,000	$ 48,500
Unfunded Credit Commitments
Allowance for unfunded credit reserves
Allowance for unfunded credit commitments, beginning of period	29,728	24,304	26,264	27,514
Provision for (reversal of) credit losses on unfunded credit commitments	3,864	(274)	7,319	(3,495)
Foreign currency translation adjustment	(3)	11	6	22
Allowance for unfunded credit commitments, end of period	$ 33,589	$ 24,041	$ 33,589	$ 24,041

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Loans Receivable and Allowance for Credit Losses - Loan Purchases, Sales and Transfers (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Loans Receivable and Allowance for Credit Losses
Loans transferred from held-for-investment to held-for-sale	$ 227,189	$ 112,363	$ 507,215	$ 463,769
Loans transferred from held-for-sale to held-for-investment				631
Sales	228,868	127,165	532,289	446,753
Purchases	160,359	57,662	432,430	599,422
Writeoff	3,600	8,700	4,200	8,900
Originated
Loans Receivable and Allowance for Credit Losses
Sales	204,100	86,200	407,300	253,900
Loans sold in secondary market | Purchased
Loans Receivable and Allowance for Credit Losses
Sales	24,700	40,900	125,000	192,900
Commercial lending | Commercial and industrial (“C&I”)
Loans Receivable and Allowance for Credit Losses
Loans transferred from held-for-investment to held-for-sale	201,299	59,069	469,571	378,841
Loans transferred from held-for-sale to held-for-investment				0
Sales	199,511	87,597	491,178	375,100
Purchases	19,588	56,507	80,550	361,169
Commercial lending | CRE
Loans Receivable and Allowance for Credit Losses
Loans transferred from held-for-investment to held-for-sale	25,890	33,616	29,490	65,250
Loans transferred from held-for-sale to held-for-investment				0
Sales	29,357	33,616	32,957	65,250
Purchases	0	0	0	0
Commercial lending | Construction and land
Loans Receivable and Allowance for Credit Losses
Loans transferred from held-for-investment to held-for-sale	0		8,154
Sales	0		8,154
Purchases	0		0
Commercial lending | Real estate loan | Multifamily residential
Loans Receivable and Allowance for Credit Losses
Loans transferred from held-for-investment to held-for-sale		14,500		14,500
Loans transferred from held-for-sale to held-for-investment				0
Sales		0		0
Purchases		0		0
Consumer lending | Real estate loan | Single-family residential
Loans Receivable and Allowance for Credit Losses
Loans transferred from held-for-investment to held-for-sale	0	5,178	0	5,178
Loans transferred from held-for-sale to held-for-investment				631
Sales	0	5,952	0	6,403
Purchases	$ 140,771	$ 1,155	$ 351,880	$ 238,253

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Investments in Qualified Affordable Housing Partnerships, Tax Credit and Other Investments, Net and Variable Interest Entities -Narrative (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2023	Dec. 31, 2022
Investments in Tax Credit and Other Investments, Net [Line Items]
Minimum compliance period for qualified affordable housing partnerships to fully utilize the tax credits (in years)		15 years
Rayliant Global Advisors Limited
Investments in Tax Credit and Other Investments, Net [Line Items]
Equity method investment, ownership (percent)	49.99%	49.99%
Payments to acquire equity method investments	$ 94.7
Equity method investment, difference between carrying amount and underlying equity	100.7	$ 100.7
Equity securities without readily determinable fair values	$ 110.9	110.9
Asset Acquisition, Contingent Consideration, Number of Shares	349,138
Rayliant Global Advisors Limited | Performance-based RSUs | Minimum
Investments in Tax Credit and Other Investments, Net [Line Items]
Shares based upon Rayliant’s achievement of specified financial performance conditions (as percentage)	20.00%
Rayliant Global Advisors Limited | Performance-based RSUs | Maximum
Investments in Tax Credit and Other Investments, Net [Line Items]
Shares based upon Rayliant’s achievement of specified financial performance conditions (as percentage)	200.00%
Tax credit investments
Investments in Tax Credit and Other Investments, Net [Line Items]
Equity securities	$ 23.6	23.6	$ 24.0
Investments in Tax Credit and Other Investments and Other Assets
Investments in Tax Credit and Other Investments, Net [Line Items]
Equity securities without readily determinable fair values	$ 148.0	$ 148.0	$ 36.5

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Investments in Qualified Affordable Housing Partnerships, Tax Credit and Other Investments, Net and Variable Interest Entities - Schedule of Investments and Unfunded Commitments (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Assets
Investments in qualified affordable housing partnerships, net	$ 412,004	$ 413,253
Investments in tax credit and other investments, net	489,555	350,003
Total	901,559	763,256
Liabilities - Unfunded Commitments
Investments in qualified affordable housing partnerships, net - liabilities unfunded commitments	252,552	266,654
Investments in tax credit and other investments, net - liabilities unfunded commitments	345,072	185,797
Total	$ 597,624	$ 452,451

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Investments in Qualified Affordable Housing Partnerships, Tax Credit and Other Investments, Net and Variable Interest Entities - Summary of Additional Information Related to the Investments (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Investments in qualified housing partnerships, net:
Tax credits and other tax benefits recognized	$ 15,660,000	$ 13,180,000	$ 47,058,000	$ 38,764,000
Amortization expense included in income tax expense	11,587,000	10,431,000	34,759,000	30,498,000
Investments in tax credit and other investments, net:
Amortization of tax credit and other investments	49,694,000	19,874,000	115,718,000	48,753,000
Unrealized losses on equity securities with readily determinable values	(674,000)	(1,014,000)	(682,000)	(2,958,000)
Historic Tax Credit Investment
Investments in tax credit and other investments, net:
Pre-tax impairment charge or recovery	$ (790,000)	$ 0	$ 831,000	$ 0

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Goodwill (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill	$ 465,697	$ 465,697

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Short-Term Borrowings and Long-Term Debt - Schedule of Short-Term Borrowings (Details) - USD ($)	Sep. 30, 2023	Dec. 31, 2022
Short-Term Debt [Line Items]
Interest Rate	4.37%
Short-term borrowings	$ 4,500,000,000	$ 0
Asset Pledged as Collateral with Right | Notes Payable, Other Payables
Short-Term Debt [Line Items]
Short-term borrowings	4,340,000,000
Unused borrowing capacity, amount	$ 238,300,000	$ 0

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Short-Term Borrowings and Long-Term Debt - Long-term Debt (Details) - Subordinated Debt - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Debt Instrument [Line Items]
Long-term debt total	$ 148.2	$ 148.0
Minimum
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	7.02%	6.12%
Long-term debt remaining maturities (in years)	11 years 1 month 6 days
Maximum
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	7.57%	6.67%
Long-term debt remaining maturities (in years)	14 years

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Commitments and Contingencies - Credit-Related Commitments (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Loan commitments
Commitments to Extend Credit
Expire in One Year or Less	$ 4,650,619
Expire After One Year Through Three Years	3,689,245
Expire After Three Years Through Five Years	1,037,254
Expire After Five Years	139,325
Total	9,516,443	$ 8,211,571
Commercial letters of credit and SBLCs
Commitments to Extend Credit
Expire in One Year or Less	875,757
Expire After One Year Through Three Years	405,377
Expire After Three Years Through Five Years	122,255
Expire After Five Years	1,124,405
Total	2,527,794	2,291,966
Commitments to Extend Credit
Commitments to Extend Credit
Expire in One Year or Less	5,526,376
Expire After One Year Through Three Years	4,094,622
Expire After Three Years Through Five Years	1,159,509
Expire After Five Years	1,263,730
Total	$ 12,044,237	$ 10,503,537

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Commitments and Contingencies - Narrative (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Commitments to Extend Credit
Letters of credit	$ 2,530,000	$ 2,290,000
Allowance for unfunded credit commitments	33,600	26,200
Loans Sold or Securitized With Recourse | Single Family and Multi-family Residential Loans | Loans Sold or Securitized with Recourse
Commitments to Extend Credit
Allowance for unfunded credit commitments	35	37
Standby Letters of Credit
Commitments to Extend Credit
Letters of credit	2,500,000	2,270,000
Commercial Letters of Credit
Commitments to Extend Credit
Letters of credit	$ 32,700	$ 21,600

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Commitments and Contingencies - Guarantees Outstanding (Details) - Loans Sold or Securitized With Recourse - Loans Sold or Securitized with Recourse - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Guarantor obligation, maximum potential future payment [Abstract]
Expire in One Year or Less	$ 28
Expire After One Year Through Three Years	23
Expire After Three Years Through Five Years	94
Expire After Five Years	20,943
Total	21,088	$ 21,777
Carrying Value	25,979	28,101
Single Family Residential
Guarantor obligation, maximum potential future payment [Abstract]
Expire in One Year or Less	28
Expire After One Year Through Three Years	23
Expire After Three Years Through Five Years	28
Expire After Five Years	6,013
Total	6,092	6,781
Carrying Value	6,092	6,781
Multifamily residential
Guarantor obligation, maximum potential future payment [Abstract]
Expire in One Year or Less	0
Expire After One Year Through Three Years	0
Expire After Three Years Through Five Years	66
Expire After Five Years	14,930
Total	14,996	14,996
Carrying Value	$ 19,887	$ 21,320

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Stock Compensation Plans - Summary of Total Share-Based Compensation Expense and Related Net Tax (Deficiencies) Benefits (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Share-Based Payment Arrangement [Abstract]
Stock compensation costs	$ 9,495	$ 12,329	$ 29,934	$ 29,338
Related net tax (deficiencies) benefits for stock compensation plans	$ (18)	$ 1	$ 8,797	$ 5,269

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Stock Compensation Plans - Narrative (Details) $ in Millions	9 Months Ended
	Sep. 30, 2023 USD ($)
RSUs | Cliff
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period (in years)	3 years
Performance-Based RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total unrecognized compensation cost	$ 17.9
Weighted average period to recognize unrecognized compensation cost	1 year 10 months 24 days
Performance-Based RSUs | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Potential for awards to vest (as a percent)	0.00%
Performance-Based RSUs | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Potential for awards to vest (as a percent)	200.00%
Performance-Based RSUs | Cliff
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period (in years)	3 years
Time-Based RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total unrecognized compensation cost	$ 32.2
Weighted average period to recognize unrecognized compensation cost	1 year 10 months 24 days

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Stock Compensation Plans - Summary of Activity for Time-Based and Performance-Based RSUs (Details)	9 Months Ended
	Sep. 30, 2023 $ / shares shares
Time-Based RSUs
Shares
Outstanding, at beginning of period (in shares) | shares	1,296,866
Granted (in shares) | shares	500,180
Vested (in shares) | shares	(522,029)
Forfeited (in shares) | shares	(53,379)
Outstanding, at end of period (in shares) | shares	1,221,638
Weighted-Average Grant Date Fair Value
Outstanding, at beginning of period (in dollars per share) | $ / shares	$ 60.77
Granted (in dollars per share) | $ / shares	73.73
Vested (in dollars per share) | $ / shares	40.79
Forfeited (in dollars per share) | $ / shares	74.00
Outstanding, at end of period (in dollars per share) | $ / shares	$ 74.04
Performance-Based RSUs
Shares
Outstanding, at beginning of period (in shares) | shares	332,510
Granted (in shares) | shares	96,271
Vested (in shares) | shares	(152,558)
Forfeited (in shares) | shares	0
Outstanding, at end of period (in shares) | shares	276,223
Weighted-Average Grant Date Fair Value
Outstanding, at beginning of period (in dollars per share) | $ / shares	$ 60.40
Granted (in dollars per share) | $ / shares	57.50
Vested (in dollars per share) | $ / shares	39.39
Forfeited (in dollars per share) | $ / shares	0
Outstanding, at end of period (in dollars per share) | $ / shares	$ 70.99

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Stockholders' Equity and Earnings Per Share - Earnings Per Share Calculation (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Basic:
Net income	$ 287,738	$ 295,339	$ 922,208	$ 791,320
Weighted-average number of shares outstanding (in shares)	141,485	140,917	141,356	141,453
Basic EPS (in dollars per share)	$ 2.03	$ 2.10	$ 6.52	$ 5.59
Diluted:
Net income	$ 287,738	$ 295,339	$ 922,208	$ 791,320
Weighted-average number of shares outstanding (in shares)	141,485	140,917	141,356	141,453
Add: Dilutive impact of unvested RSUs (in shares)	637	1,094	688	1,148
Diluted weighted-average number of shares outstanding (in shares)	142,122	142,011	142,044	142,601
Diluted EPS (in dollars per share)	$ 2.02	$ 2.08	$ 6.49	$ 5.55

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Stockholders' Equity and Earnings Per Share - Narrative (Details) - shares shares in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
RSUs
Stockholders' Equity and Earnings Per Share [Line Items]
Weighted-average anti-dilutive shares (in shares)	575	61	350	58

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Accumulated Other Comprehensive Income (Loss) - Components of AOCI (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	$ 6,461,697	$ 5,609,482	$ 5,984,612	$ 5,837,218
Other comprehensive loss	(93,445)	(199,384)	(109,748)	(709,651)
Ending balance	6,596,706	5,660,668	6,596,706	5,660,668
Debt Securities
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(681,536)	(554,781)	(694,815)	(85,703)
Net unrealized (losses) gains arising during the period	(72,691)	(161,445)	(72,034)	(635,664)
Amounts reclassified from AOCI	2,870	3,256	15,492	8,397
Other comprehensive loss	(69,821)	(158,189)	(56,542)	(627,267)
Ending balance	(751,357)	(712,970)	(751,357)	(712,970)
Cash Flow Hedges
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(74,805)	(30,846)	(49,531)	257
Net unrealized (losses) gains arising during the period	(44,347)	(34,423)	(91,468)	(63,232)
Amounts reclassified from AOCI	17,013	1,154	38,860	(1,140)
Other comprehensive loss	(27,334)	(33,269)	(52,608)	(64,372)
Ending balance	(102,139)	(64,115)	(102,139)	(64,115)
Foreign Currency Translation Adjustments
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(25,591)	(15,021)	(21,283)	(4,935)
Net unrealized (losses) gains arising during the period	3,710	(7,926)	(598)	(18,012)
Amounts reclassified from AOCI	0	0	0	0
Other comprehensive loss	3,710	(7,926)	(598)	(18,012)
Ending balance	(21,881)	(22,947)	(21,881)	(22,947)
AOCI, Net of Tax
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(781,932)	(600,648)	(765,629)	(90,381)
Net unrealized (losses) gains arising during the period	(113,328)	(203,794)	(164,100)	(716,908)
Amounts reclassified from AOCI	19,883	4,410	54,352	7,257
Other comprehensive loss	(93,445)	(199,384)	(109,748)	(709,651)
Ending balance	$ (875,377)	$ (800,032)	$ (875,377)	$ (800,032)

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Accumulated Other Comprehensive Income (Loss) - Components of Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Before-Tax
Net change	$ (134,036)	$ (278,005)	$ (154,395)	$ (997,274)
Tax Effect
Net change	40,591	78,621	44,647	287,623
Net-of-Tax
Other comprehensive loss	(93,445)	(199,384)	(109,748)	(709,651)
Debt Securities
Before-Tax
Net unrealized losses on AFS debt securities arising during the period			(102,262)	(742,132)
Unrealized losses on debt securities transferred from AFS to HTM			0	(160,416)
Net realized losses (gains) on AFS debt securities reclassified into net income			10,000	(1,306)
Amortization of unrealized losses on transferred securities	4,075	4,623	11,994	13,228
Net unrealized losses arising during the period	(103,183)	(229,246)
Net change	(99,108)	(224,623)	(80,268)	(890,626)
Tax Effect
Net unrealized losses on AFS debt securities arising during the period			30,228	219,459
Unrealized losses on debt securities transferred from AFS to HTM			0	47,425
Net realized losses (gains) on AFS debt securities reclassified into net income			(2,956)	386
Amortization of unrealized losses on transferred securities	(1,205)	(1,367)	(3,546)	(3,911)
Net unrealized losses arising during the period	30,492	67,801
Net change	29,287	66,434	23,726	263,359
Net-of-Tax
Net unrealized losses on AFS debt securities arising during the period			(72,034)	(522,673)
Unrealized losses on debt securities transferred from AFS to HTM			0	(112,991)
Net realized losses (gains) on AFS debt securities reclassified into net income			7,044	(920)
Amortization of unrealized losses on transferred securities	2,870	3,256	8,448	9,317
Net unrealized losses arising during the period	(72,691)	(161,445)	(72,034)	(635,664)
Net realized losses (gains) reclassified into net income	2,870	3,256	15,492	8,397
Other comprehensive loss	(69,821)	(158,189)	(56,542)	(627,267)
Cash Flow Hedges
Before-Tax
Net unrealized losses arising during the period	(62,715)	(48,325)	(129,329)	(88,771)
Net realized losses (gains) reclassified into net income	24,059	1,619	54,955	(1,601)
Net change	(38,656)	(46,706)	(74,374)	(90,372)
Tax Effect
Net unrealized losses arising during the period	18,368	13,902	37,861	25,539
Net realized losses (gains) reclassified into net income	(7,046)	(465)	(16,095)	461
Net change	11,322	13,437	21,766	26,000
Net-of-Tax
Net unrealized losses arising during the period	(44,347)	(34,423)	(91,468)	(63,232)
Net realized losses (gains) reclassified into net income	17,013	1,154	38,860	(1,140)
Other comprehensive loss	(27,334)	(33,269)	(52,608)	(64,372)
Foreign Currency Translation Adjustments
Before-Tax
Net unrealized losses arising during the period	3,728	(6,676)	247	(16,276)
Net change	3,728	(6,676)	247	(16,276)
Tax Effect
Net unrealized losses arising during the period	(18)	(1,250)	(845)	(1,736)
Net change	(18)	(1,250)	(845)	(1,736)
Net-of-Tax
Net unrealized losses arising during the period	3,710	(7,926)	(598)	(18,012)
Net realized losses (gains) reclassified into net income	0	0	0	0
Other comprehensive loss	$ 3,710	$ (7,926)	$ (598)	$ (18,012)

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Business Segments - Narrative (Details)	9 Months Ended
	Sep. 30, 2023 segment
Segment Reporting [Abstract]
Number of reportable segments	3
Number of core segments	2

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Business Segments - Operating Results and Other Key Financial Measures (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Segment Reporting Information
Net interest income (loss) before provision for credit losses	$ 570,813	$ 551,809	$ 1,737,420	$ 1,440,374
Provision for credit losses	42,000	27,000	88,000	48,500
Noninterest income (loss)	76,752	75,552	215,361	233,739
Noninterest expense	252,014	215,973	732,250	602,283
INCOME BEFORE INCOME TAXES	353,551	384,388	1,132,531	1,023,330
Segment net income (loss)	287,738	295,339	922,208	791,320
Segment assets	68,289,458	62,576,061	68,289,458	62,576,061	$ 64,112,150
Consumer and Business Banking
Segment Reporting Information
Net interest income (loss) before provision for credit losses	315,409	326,411	927,173	823,998
Provision for credit losses	1,633	8,974	22,169	14,976
Noninterest income (loss)	25,132	30,819	78,254	84,402
Noninterest expense	106,626	104,005	327,476	294,395
INCOME BEFORE INCOME TAXES	232,282	244,251	655,782	599,029
Segment net income (loss)	164,051	173,982	463,151	426,695
Segment assets	18,935,452	17,002,000	18,935,452	17,002,000
Commercial Banking
Segment Reporting Information
Net interest income (loss) before provision for credit losses	242,345	222,996	742,108	662,037
Provision for credit losses	40,367	18,026	65,831	33,524
Noninterest income (loss)	43,672	48,641	129,809	145,750
Noninterest expense	87,556	81,386	263,137	235,804
INCOME BEFORE INCOME TAXES	158,094	172,225	542,949	538,459
Segment net income (loss)	110,182	122,869	383,669	384,237
Segment assets	34,438,787	32,836,381	34,438,787	32,836,381
Other
Segment Reporting Information
Net interest income (loss) before provision for credit losses	13,059	2,402	68,139	(45,661)
Provision for credit losses	0	0	0	0
Noninterest income (loss)	7,948	(3,908)	7,298	3,587
Noninterest expense	57,832	30,582	141,637	72,084
INCOME BEFORE INCOME TAXES	(36,825)	(32,088)	(66,200)	(114,158)
Segment net income (loss)	13,505	(1,512)	75,388	(19,612)
Segment assets	$ 14,915,219	$ 12,737,680	$ 14,915,219	$ 12,737,680