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, 2018

Commission File Number: 000-15637

SVB FINANCIAL GROUP

(Exact name of registrant as specified in its charter)

Delaware	91-1962278
(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification No.)

3003 Tasman Drive, Santa Clara, California	95054-1191
(Address of principal executive offices)	(Zip Code)

(408) 654-7400

(Registrant’s telephone number, including area code) 

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  x    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  x    No  ¨

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, 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. (Check one):

Large accelerated filer        x             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  x

At October 31, 2018, 53,250,854 shares of the registrant’s common stock ($0.001 par value) were outstanding.

Available on the web at www.svb.com

TABLE OF CONTENTS

		Page
PART I - FINANCIAL INFORMATION		4
Item 1.	Interim Consolidated Financial Statements	4
	Interim Consolidated Balance Sheets as of September 30, 2018 and December 31, 2017 (Unaudited)	4
	Interim Consolidated Statements of Income for the three and nine months ended September 30, 2018 and 2017 (Unaudited)	5
	Interim Consolidated Statements of Comprehensive Income for the three and nine months ended September 30, 2018 and 2017 (Unaudited)	6
	Interim Consolidated Statements of Stockholders' Equity for the nine months ended September 30, 2018 and 2017 (Unaudited)	7
	Interim Consolidated Statements of Cash Flows for the nine months ended September 30, 2018 and 2017 (Unaudited)	8
	Notes to Interim Consolidated Financial Statements (Unaudited)	9
Item 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations	60
Item 3.	Quantitative and Qualitative Disclosures about Market Risk	103
Item 4.	Controls and Procedures	105
PART II - OTHER INFORMATION		106
Item 1.	Legal Proceedings	107
Item 1A.	Risk Factors	107
Item 2.	Unregistered Sales of Equity Securities and Use of Proceeds	107
Item 3.	Defaults Upon Senior Securities	107
Item 4.	Mine Safety Disclosures	107
Item 5.	Other Information	107
Item 6.	Exhibits	107
SIGNATURES		108

2

Glossary of Acronyms that may be used in this Report

AFS— Available-for-Sale

APIC— Additional Paid-in Capital

ASC— Accounting Standards Codification

ASU— Accounting Standards Update

CET— Common Equity Tier

EHOP— Employee Home Ownership Program of the Company

EPS— Earnings Per Share

ERI— Energy and Resource Innovation

ESOP— Employee Stock Ownership Plan of the Company

ESPP— 1999 Employee Stock Purchase Plan of the Company

FASB— Financial Accounting Standards Board

FDIC— Federal Deposit Insurance Corporation

FHLB— Federal Home Loan Bank

FRB— Federal Reserve Bank

FTE— Full-Time Employee

FTP— Funds Transfer Pricing

GAAP— Accounting principles generally accepted in the United States of America

HTM— Held-to-Maturity

IASB— International Accounting Standards Board

IPO— Initial Public Offering

IRS— Internal Revenue Service

IT— Information Technology

LIBOR— London Interbank Offered Rate

M&A— Merger and Acquisition

OTTI— Other Than Temporary Impairment

SEC— Securities and Exchange Commission

SPD-SVB— SPD Silicon Valley Bank Co., Ltd. (the Bank's joint venture bank in China)

TDR— Troubled Debt Restructuring

UK— United Kingdom

VIE— Variable Interest Entity

3

PART I - FINANCIAL INFORMATION

ITEM 1. INTERIM CONSOLIDATED FINANCIAL STATEMENTS

SVB FINANCIAL GROUP AND SUBSIDIARIES

INTERIM CONSOLIDATED BALANCE SHEETS (UNAUDITED)

(Dollars in thousands, except par value and share data)	September 30, 2018			December 31, 2017
Assets
Cash and cash equivalents	$	3,819,141		$	2,923,075
Available-for-sale securities, at fair value (cost of $9,236,301 and $11,131,008, respectively)	9,087,609			11,120,664
Held-to-maturity securities, at cost (fair value of $15,372,238 and $12,548,280, respectively)	15,899,726			12,663,455
Non-marketable and other equity securities	896,249			651,053
Total investment securities	25,883,584			24,435,172
Loans, net of unearned income	27,494,915			23,106,316
Allowance for loan losses	(285,713		)	(255,024		)
Net loans	27,209,202			22,851,292
Premises and equipment, net of accumulated depreciation and amortization	121,890			128,682
Accrued interest receivable and other assets	1,105,917			876,246
Total assets	$	58,139,734		$	51,214,467
Liabilities and total equity
Liabilities:
Noninterest-bearing demand deposits	$	40,473,774		$	36,655,497
Interest-bearing deposits	8,122,337			7,598,578
Total deposits	48,596,111			44,254,075
Short-term borrowings	2,631,252			1,033,730
Other liabilities	1,146,109			911,755
Long-term debt	696,217			695,492
Total liabilities	53,069,689			46,895,052
Commitments and contingencies (Note 13 and Note 16)
SVBFG stockholders’ equity:
Preferred stock, $0.001 par value, 20,000,000 shares authorized; no shares issued and outstanding	—			—
Common stock, $0.001 par value, 150,000,000 shares authorized; 53,250,255 shares and 52,835,188 shares outstanding, respectively	53			53
Additional paid-in capital	1,360,030			1,314,377
Retained earnings	3,672,696			2,866,837
Accumulated other comprehensive loss	(108,410		)	(1,472		)
Total SVBFG stockholders’ equity	4,924,369			4,179,795
Noncontrolling interests	145,676			139,620
Total equity	5,070,045			4,319,415
Total liabilities and total equity	$	58,139,734		$	51,214,467

See accompanying notes to interim consolidated financial statements (unaudited).

4

SVB FINANCIAL GROUP AND SUBSIDIARIES

INTERIM CONSOLIDATED STATEMENTS OF INCOME (UNAUDITED)

	Three months ended September 30,						Nine months ended September 30,
(Dollars in thousands, except per share amounts)	2018			2017			2018			2017
Interest income:
Loans	$	352,353		$	268,445		$	979,724		$	745,983
Investment securities:
Taxable	142,075			109,443			403,702			294,768
Non-taxable	10,748			1,172			23,506			2,703
Federal funds sold, securities purchased under agreements to resell and other short-term investment securities	8,137			6,211			20,080			16,670
Total interest income	513,313			385,271			1,427,012			1,060,124
Interest expense:
Deposits	8,042			2,304			18,409			6,218
Borrowings	12,049			8,993			29,075			27,243
Total interest expense	20,091			11,297			47,484			33,461
Net interest income	493,222			373,974			1,379,528			1,026,663
Provision for credit losses	17,174			23,522			74,226			70,062
Net interest income after provision for credit losses	476,048			350,452			1,305,302			956,601
Noninterest income:
Gains on investment securities, net	32,193			15,238			77,365			48,838
Gains on equity warrant assets, net	34,141			24,922			72,393			42,432
Foreign exchange fees	32,656			29,671			100,560			82,026
Credit card fees	24,121			20,270			68,739			56,099
Deposit service charges	19,588			14,508			56,081			43,046
Client investment fees	36,265			15,563			88,592			37,571
Lending related fees	10,675			15,404			30,938			32,874
Letters of credit and standby letters of credit fees	8,409			7,306			24,938			20,951
Other	12,022			15,896			38,671			41,128
Total noninterest income	210,070			158,778			558,277			404,965
Noninterest expense:
Compensation and benefits	195,437			153,263			543,198			449,412
Professional services	36,542			32,987			112,080			86,331
Premises and equipment	19,858			18,937			57,576			53,753
Net occupancy	13,694			12,660			40,598			35,437
Business development and travel	12,712			10,329			35,998			30,913
FDIC and state assessments	9,550			8,359			29,306			26,354
Correspondent bank fees	3,513			3,162			10,200			9,770
Other	18,139			18,064			51,645			54,670
Total noninterest expense	309,445			257,761			880,601			746,640
Income before income tax expense	376,673			251,469			982,978			614,926
Income tax expense	95,308			97,351			246,561			220,412
Net income before noncontrolling interests	281,365			154,118			736,417			394,514
Net income attributable to noncontrolling interests	(6,548		)	(5,498		)	(28,841		)	(21,218		)
Net income available to common stockholders	$	274,817		$	148,620		$	707,576		$	373,296
Earnings per common share—basic	$	5.16		$	2.82		$	13.33		$	7.11
Earnings per common share—diluted	5.10			2.79			13.15			7.01

See accompanying notes to interim consolidated financial statements (unaudited).

5

SVB FINANCIAL GROUP AND SUBSIDIARIES

INTERIM CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED)

	Three months ended September 30,						Nine months ended September 30,
(Dollars in thousands)	2018			2017			2018			2017
Net income before noncontrolling interests	$	281,365		$	154,118		$	736,417		$	394,514
Other comprehensive loss, net of tax:
Change in foreign currency cumulative translation gains and losses:
Foreign currency translation (losses) gains	(3,259		)	1,928			(5,337		)	4,463
Related tax benefit (expense)	905			(787		)	1,482			(1,821		)
Change in unrealized gains and losses on available-for-sale securities:
Unrealized holding (losses) gains	(24,902		)	925			(98,032		)	(12,471		)
Related tax benefit (expense)	6,994			(429		)	27,269			5,207
Reclassification adjustment for losses (gains) included in net income (1)	—			101			—			(384		)
Related tax (benefit) expense (1)	—			(41		)	—			157
Reclassification of unrealized gains on equity securities to retained earnings for ASU 2016-01 (1)	—			—			(40,316		)	—
Related tax expense (1)	—			—			11,145			—
Amortization of unrealized holding gains on securities transferred from available-for-sale to held-to-maturity	(1,777		)	(1,594		)	(3,915		)	(4,931		)
Related tax benefit	494			641			1,085			1,984
Reclassification of stranded tax effect to retained earnings for ASU 2018-02 (1)	—			—			(319		)	—
Other comprehensive loss, net of tax	(21,545		)	744			(106,938		)	(7,796		)
Comprehensive income	259,820			154,862			629,479			386,718
Comprehensive income attributable to noncontrolling interests	(6,548		)	(5,498		)	(28,841		)	(21,218		)
Comprehensive income attributable to SVBFG	$	253,272		$	149,364		$	600,638		$	365,500

(1) See "Adoption of New Accounting Standards" in Note 1—“Basis of Presentation” of the “Notes to Interim Consolidated Financial Statements (unaudited)” under Part I, Item 1 of this report for additional details.

See accompanying notes to interim consolidated financial statements (unaudited).

6

SVB FINANCIAL GROUP AND SUBSIDIARIES

INTERIM CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY (UNAUDITED)

	Common Stock			Additional Paid-in Capital		Retained Earnings			Accumulated Other Comprehensive Income (Loss)			Total SVBFG Stockholders’ Equity			Noncontrolling Interests			Total Equity
(Dollars in thousands)	Shares	Amount
Balance at December 31, 2016	52,254,074	$	52	$	1,242,741	$	2,376,331		$	23,430		$	3,642,554		$	134,483		$	3,777,037
Common stock issued under employee benefit plans, net of restricted stock cancellations	458,742	1		14,191		—			—			14,192			—			14,192
Common stock issued under ESOP	10,838	—		2,094		—			—			2,094			—			2,094
Net income	—	—		—		373,296			—			373,296			21,218			394,514
Capital calls and distributions, net	—	—		—		—			—			—			(18,216		)	(18,216		)
Net change in unrealized gains and losses on AFS securities, net of tax	—	—		—		—			(7,491		)	(7,491		)	—			(7,491		)
Amortization of unrealized holding gains on securities transferred from AFS to HTM, net of tax	—	—		—		—			(2,947		)	(2,947		)	—			(2,947		)
Foreign currency translation adjustments, net of tax	—	—		—		—			2,642			2,642			—			2,642
Share-based compensation, net	—	—		35,473		—			—			35,473			—			35,473
Balance at September 30, 2017	52,723,654	$	53	$	1,294,499	$	2,749,627		$	15,634		$	4,059,813		$	137,485		$	4,197,298
Balance at December 31, 2017	52,835,188	$	53	$	1,314,377	$	2,866,837		$	(1,472	)	$	4,179,795		$	139,620		$	4,319,415
Cumulative adjustment for ASU 2014-09, net of tax (1)	—	—		—		(5,802		)	—			(5,802		)	—			(5,802		)
Cumulative adjustment for ASU 2016-01, net of tax (1)	—	—		—		103,766			(29,171		)	74,595			—			74,595
Reclassification of stranded tax effect for ASU 2018-02 (1)	—	—		—		319			(319		)	—			—			—
Common stock issued under employee benefit plans, net of restricted stock cancellations	405,395	—		9,108		—			—			9,108			—			9,108
Common stock issued under ESOP	9,672	—		2,577		—			—			2,577			—			2,577
Net income	—	—		—		707,576			—			707,576			28,841			736,417
Capital calls and distributions, net	—	—		—		—			—			—			(22,785		)	(22,785		)
Net change in unrealized gains and losses on AFS securities, net of tax	—	—		—		—			(70,763		)	(70,763		)	—			(70,763		)
Amortization of unrealized holding gains on securities transferred from AFS to HTM, net of tax	—	—		—		—			(2,830		)	(2,830		)	—			(2,830		)
Foreign currency translation adjustments, net of tax	—	—		—		—			(3,855		)	(3,855		)	—			(3,855		)
Share-based compensation, net	—	—		33,968		—			—			33,968			—			33,968
Balance at September 30, 2018	53,250,255	$	53	$	1,360,030	$	3,672,696		$	(108,410	)	$	4,924,369		$	145,676		$	5,070,045

(1) See "Adoption of New Accounting Standards" in Note 1—“Basis of Presentation” of the “Notes to Interim Consolidated Financial Statements (unaudited)” under Part I, Item 1 of this report for additional details.

  See accompanying notes to interim consolidated financial statements (unaudited).

7

SVB FINANCIAL GROUP AND SUBSIDIARIES

INTERIM CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED)

	Nine months ended September 30,
(Dollars in thousands)	2018			2017
Cash flows from operating activities:
Net income before noncontrolling interests	$	736,417		$	394,514
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for credit losses	74,226			70,062
Changes in fair values of equity warrant assets, net of proceeds from exercises	(24,462		)	(29,666		)
Changes in fair values of derivatives, net	2,964			8,214
Gains on investment securities, net (1)	(77,365		)	(31,032		)
Distributions of earnings from non-marketable and other equity securities (1)	54,605			38,965
Depreciation and amortization	43,389			39,265
Amortization of premiums and discounts on investment securities, net	(252		)	2,609
Amortization of share-based compensation	33,968			27,739
Amortization of deferred loan fees	(94,771		)	(81,060		)
Deferred income tax (benefit) expense	(16,532		)	2,325
Excess tax benefit from exercise of stock options and vesting of restricted shares	(17,543		)	(14,399		)
Losses from the write-off of premises and equipment	7,117			—
Other gains	—			(6,150		)
Changes in other assets and liabilities:
Accrued interest receivable and payable, net	(51,521		)	(26,092		)
Accounts receivable and payable, net	1,697			4,120
Income tax receivable and payable, net	(12,962		)	30,069
Accrued compensation	5,505			(11,731		)
Foreign exchange spot contracts, net	86,298			86,911
Other, net	(46,874		)	16,410
Net cash provided by operating activities	703,904			521,073
Cash flows from investing activities:
Purchases of available-for-sale securities	(662,458		)	(2,420,741		)
Proceeds from sales of available-for-sale securities	—			7,311
Proceeds from maturities and paydowns of available-for-sale securities	2,529,666			2,434,039
Purchases of held-to-maturity securities	(4,726,595		)	(3,812,782		)
Proceeds from maturities and paydowns of held-to-maturity securities	1,482,204			1,283,764
Purchases of non-marketable and other securities	(56,435		)	(18,766		)
Proceeds from sales and distributions of capital of non-marketable and other securities (1)	83,020			35,821
Net increase in loans	(4,356,980		)	(2,263,600		)
Purchases of premises and equipment	(28,718		)	(35,470		)
Proceeds from sale of equity valuation services business	—			3,000
Net cash used for investing activities	(5,736,296		)	(4,787,424		)
Cash flows from financing activities:
Net increase in deposits	4,342,036			5,832,165
Net increase (decrease) in short-term borrowings	1,597,522			(507,828		)
Principal payments of long-term debt	—			(46,235		)
(Distributions to noncontrolling interests), net of contributions from noncontrolling interests	(22,785		)	(18,216		)
Proceeds from issuance of common stock, ESPP and ESOP	11,685			16,286
Net cash provided by financing activities	5,928,458			5,276,172
Net increase in cash and cash equivalents	896,066			1,009,821
Cash and cash equivalents at beginning of period	2,923,075			2,545,750
Cash and cash equivalents at end of period	$	3,819,141		$	3,555,571
Supplemental disclosures:
Cash paid during the period for:
Interest	$	54,681		$	41,324
Income taxes	277,388			190,706
Noncash items during the period:
Changes in unrealized gains and losses on available-for-sale securities, net of tax	$	(70,763	)	$	(7,491	)
Distributions of stock from investments	4,368			5,360

(1) During the first quarter of 2018 we adopted ASU 2016-15, Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments. This guidance was adopted on a retrospective basis and impacted the presentation between investing and operating activities related to distributions and net gains from our nonmarketable and other securities portfolio. See Note 1—“Basis of Presentation” of the “Notes to Interim Consolidated Financial Statements (unaudited)” under Part I, Item 1 of this report for additional details.

See accompanying notes to interim consolidated financial statements (unaudited).

8

SVB FINANCIAL GROUP AND SUBSIDIARIES

NOTES TO INTERIM CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)

1. Basis of Presentation

SVB Financial Group is a diversified financial services company, as well as a bank holding company and a financial holding company. SVB Financial was incorporated in the state of Delaware in March 1999. Through our various subsidiaries and divisions, we offer a variety of banking and financial products and services to support our clients of all sizes and stages throughout their life cycles. In these notes to our consolidated financial statements, when we refer to “SVB Financial Group,” “SVBFG," the “Company,” “we,” “our,” “us” or use similar words, we mean SVB Financial Group and all of its subsidiaries collectively, including Silicon Valley Bank (the “Bank”), unless the context requires otherwise. When we refer to “SVB Financial” or the “Parent” we are referring only to the parent company, SVB Financial Group (not including subsidiaries).

The accompanying unaudited interim consolidated financial statements reflect all adjustments of a normal and recurring nature that are, in the opinion of management, necessary to fairly present our financial position, results of operations and cash flows in accordance with GAAP. Such unaudited interim consolidated financial statements have been prepared in accordance with the instructions to Form 10-Q pursuant to the rules and regulations of the SEC. Certain information and footnote disclosures normally included in financial statements prepared in accordance with GAAP have been condensed or omitted pursuant to such rules and regulations. The results of operations for the three and nine months endedSeptember 30, 2018 are not necessarily indicative of results to be expected for any future periods. These unaudited interim consolidated financial statements should be read in conjunction with our Annual Report on Form 10-K for the year ended December 31, 2017 (“2017 Form 10-K”).

The accompanying unaudited interim consolidated financial statements have been prepared on a consistent basis with the accounting policies described in Consolidated Financial Statements and Supplementary Data—Note 2—“Summary of Significant Accounting Policies” under Part II, Item 8 of our 2017 Form 10-K.

The preparation of unaudited interim consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities at the date of the financial statements, and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. Estimates may change as new information is obtained. Significant items that are subject to such estimates include measurements of fair value, the valuation of non-marketable and other equity securities, the valuation of equity warrant assets, the adequacy of the allowance for loan losses and allowance for unfunded credit commitments, and the recognition and measurement of income tax assets and liabilities.

Principles of Consolidation and Presentation

Our consolidated financial statements include the accounts of SVB Financial Group and consolidated entities. We consolidate voting entities in which we have control through voting interests or entities through which we have a controlling financial interest in a variable interest entity (“VIE”). We determine whether we have a controlling financial interest in a VIE by determining if we have: (a) the power to direct the activities of the VIE that most significantly impact the entity’s economic performance, (b) the obligation to absorb the expected losses, or (c) the right to receive the expected returns of the entity. Generally, we have significant variable interests if our commitments to a limited partnership investment represent a significant amount of the total commitments to the entity. We also evaluate the impact of related parties on our determination of variable interests in our consolidation conclusions. We consolidate VIEs in which we are the primary beneficiary based on a controlling financial interest. If we are not the primary beneficiary of a VIE, we record our pro-rata interests based on our ownership percentage.

VIEs are entities where investors lack sufficient equity at risk for the entity to finance its activities without additional subordinated financial support or equity investors, as a group, lack one of the following characteristics: (a) the power to direct the activities that most significantly impact the entity’s economic performance, (b) the obligation to absorb the expected losses of the entity, or (c) the right to receive the expected returns of the entity. We assess VIEs to determine if we are the primary beneficiary of a VIE.  A primary beneficiary is defined as a variable interest holder that has a controlling financial interest. A controlling financial interest requires both: (a) power to direct the activities that most significantly impact the VIE’s economic performance, and (b) obligation to absorb losses or receive benefits of a VIE that could potentially be significant to a VIE. Under this analysis, we also evaluate kick-out rights and other participating rights which could provide us a controlling financial interest. The primary beneficiary of a VIE is required to consolidate the VIE.

We also evaluate fees paid to managers of our limited partnership investments. We exclude those fee arrangements that are not deemed to be variable interests from the analysis of our interests in our investments in VIEs and the determination of a primary beneficiary, if any. Fee arrangements based on terms that are customary and commensurate with the services provided are deemed not to be variable interests and are, therefore, excluded.

9

All significant intercompany accounts and transactions with consolidated entities have been eliminated. We have not provided financial or other support during the periods presented to any VIE that we were not previously contractually required to provide.

Adoption of New Accounting Standards

In May 2014, the FASB issued a new accounting standard update (ASU 2014-09, Revenue from Contracts with Customers (Topic 606)), which provides revenue recognition guidance that is intended to create greater consistency with respect to how and when revenue from contracts with customers is shown in the income statement. The guidance requires that revenue from contracts with customers be recognized when transfer of control over goods or services is passed to customers in the amount of consideration expected to be received. Subsequent Accounting Standard Updates have been issued clarifying the original pronouncement (ASU 2016-08, ASU 2016-10, ASU 2016-12 and ASU 2016-20).

On January 1, 2018, we adopted the new accounting standard ASU 2014-09, Revenue from Contracts with Customers and all the related amendments ("new revenue standard," "ASC 606" or "ASU 2014-09") using the modified retrospective method applied to those contracts which were not completed as of January 1, 2018. We elected to apply the practical expedient which allows us to expense costs related to obtaining contracts as incurred because the amortization period would have been one year or less. We recognized the cumulative effect of initially applying the new revenue standard as an adjustment to the opening balance of retained earnings. The comparative information has not been restated and continues to be reported under the accounting standards in effect for those periods.

We completed a comprehensive scoping exercise to determine the revenue streams that are within the scope of this guidance. The scope of this guidance explicitly excludes net interest income, including interest income earned from our loan and fixed income securities portfolios, as well as certain other noninterest income earned from our lending-, investment- and derivative-related activities. Based on our completed assessment, we did not identify any material changes to the timing or the amounts of our revenue recognition, however, we identified a change in the timing of recognizing fund management fees in other noninterest income for a portion of our SVB Capital funds. Fund management fees for these certain SVB Capital funds will now be recognized at the time of distribution which typically occurs later in the life of the fund than had been previously recognized. The cumulative adjustment to retained earnings associated with this change was $5.8 million, net of tax, with an immaterial impact to our net income on an ongoing basis. The impacts to net income as a result of applying the new revenue standard were decreases of $0.5 million and $1.4 million for the three and nine months endedSeptember 30, 2018, respectively.

The timing of revenue recognition may differ from the timing of cash settlements or invoicing to customers. We record a receivable when revenue is recognized prior to invoicing, and unearned revenue when revenue is recognized subsequent to receipt of consideration.These assets and liabilities are reported on the consolidated balance sheets on a contract-by-contract basis at the end of each reporting period. During the three and nine months endedSeptember 30, 2018, changes in our contract assets, contract liabilities and receivables were not material. Additionally, revenues recognized during the three and nine months endedSeptember 30, 2018 that were included in the corresponding contract liability balance at the beginning of the period were not material.

The cumulative effect of the changes to our consolidated balance sheets at January 1, 2018, for the adoption of the new revenue standard were as follows:

(Dollars in thousands)	Balance at December 31, 2017		Adjustments Due to Adoption of ASC 606			Balance at January 1, 2018
Accrued interest receivable and other assets:
Accounts receivable	$	55,946	$	(34,340	)	$	21,606
Other liabilities:
Deferred revenue	27,057		(26,321		)	736
Current taxes payable	4,675		(2,217		)	2,458
Stockholders' Equity:
Retained earnings	2,866,837		(5,802		)	2,861,035

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In accordance with the new revenue standard requirements, the disclosure of the impact of adoption on our consolidated balance sheets at September 30, 2018 and our statements of income for the three and nine months endedSeptember 30, 2018, were as follows:

	September 30, 2018
(Dollars in thousands)	As Reported		Balances Without Adoption of ASC 606			Effect of Change Higher/(Lower)
Accrued interest receivable and other assets:
Accounts receivable	$	61,090	$	100,470		$	(39,380	)
Other liabilities:
Deferred fees	556		28,379			(27,823		)
Current taxes payable (receivable)	2,002		(694		)	2,696
Stockholders' Equity:
Retained earnings	3,672,696		3,678,020			(5,324		)

	Three months ended September 30, 2018
(Dollars in thousands)	As Reported		Balances Without Adoption of ASC 606		Effect of Change Higher/(Lower)
Other noninterest income:
Fund management fees	$	5,479	$	6,087	$	(608	)
Income tax expense	95,308		95,463		(155		)
Net Income available to common stockholders	274,817		275,270		(453		)
Diluted earnings per share	5.10		5.11		(0.01		)

	Nine months ended September 30, 2018
(Dollars in thousands)	As Reported		Balances Without Adoption of ASC 606		Effect of Change Higher/(Lower)
Other noninterest income:
Fund management fees	$	17,144	$	19,001	$	(1,857	)
Income tax expense	246,561		247,040		(479		)
Net Income available to common stockholders	707,576		708,954		(1,378		)
Diluted earnings per share	13.15		13.18		(0.03		)

In February 2018, the FASB issued a new accounting standard update (ASU 2018-02, Income Statement - Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income (ASU "2018-02")) to address certain stranded income tax effects in accumulated other comprehensive income ("AOCI") resulting from H.R.1, known as the Tax Cuts and Jobs Act (the "TCJ Act"). ASU 2018-02 changed current accounting whereby an entity may elect to reclassify the stranded tax effect from AOCI to retained earnings in each period in which the effect of the change in the U.S. federal corporate income tax rate in the TCJ Act (or portion thereof) is recorded. ASU 2018-02 is effective for periods beginning after December 15, 2018 and early adoption is permitted. We have elected to early adopt ASU 2018-02 and reclassified approximately $0.3 millionfrom accumulated other comprehensive income to retained earnings within our consolidated statements of stockholders' equity in the first quarter of 2018.

On January 1, 2018, we adopted the new accounting standard update ASU 2016-01, Recognition and Measurement of Financial Assets and Financial Liabilities (Topic 825), which addresses certain aspects of recognition, measurement, presentation and disclosure of financial instruments. This guidance requires equity investments (except those accounted for under the equity method of accounting) to be measured at fair value with changes in fair value recognized in net income. We adopted this guidance using the modified retrospective method and our equity investments carried at cost with readily determinable fair values were re-measured at fair value and the difference between cost and fair value was recorded as a cumulative-effect adjustment to opening retained earnings as of January 1, 2018. The adjustment to opening retained earnings for these investments was $74.6 million, net of tax, with subsequent changes in the fair value of these equity securities recorded as unrealized gains or losses in

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our consolidated statements of income. Additionally, in accordance with this guidance, net unrealized gains of $29.2 million, net of tax, included in accumulated other comprehensive income on January 1, 2018, related to our previously reported available-for-sale equity securities, were reclassified as an adjustment to retained earnings. Subsequent changes in the fair value of these equity securities were recorded as unrealized gains or losses in our consolidated statements of income. Furthermore, for purposes of disclosing the fair value of loans carried at amortized cost, our valuation methodology was updated to conform to an “exit price” concept as required by the standard update, resulting in an immaterial change in the fair value.

In August 2016, the FASB issued a new accounting standard update (ASU 2016-15, Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments), which clarifies the guidance on eight specific cash flow issues. We adopted the new accounting standard, specifically as it relates to distributions from our equity method investments, on January 1, 2018. We elected to adopt the nature of distribution approach and applied the guidance retrospectively. The new guidance had an immaterial impact on the presentation between investing and operating activities within our statements of cash flows related to distributions and net gains from our nonmarketable and other securities portfolio.

In November 2016, the FASB issued a new accounting standard update (ASU 2016-18, Statement of Cash Flows (Topic 230): Restricted Cash), which requires that a statement of cash flows explains the change during the period in the total cash, cash equivalents, and amounts generally described as restricted cash or restricted cash equivalents.  Therefore, amounts generally described as restricted cash and restricted cash equivalents should be included with cash and cash equivalents when reconciling the beginning of period and end of period total amounts shown on the statement of cash flows.  Previous to the update, there had been some diversity in practice.  Given that we had already classified restricted cash such as cash reserves at the Federal Reserve as part of cash and cash equivalents on the cash flow statement, the update had no impact on how we were already reporting and presenting our statement of cash flows.

Recent Accounting Pronouncements

In February 2016, the FASB issued a new accounting standard update (ASU 2016-02, Leases (Topic 842)), which will require for all operating leases the recognition of a right-of-use asset and a corresponding lease liability, in the statement of financial position. The lease cost will be allocated over the lease term on a straight-line basis. There were further amendments, including practical expedients, with the issuance of ASU 2018-01, “Leases (Topic 842): Land Easement Practical Expedient for Transition to Topic 842” in January 2018. In July 2018 the FASB issued ASU No. 2018-11, "Leases (Topic 842): Targeted Improvements," which provides us with the option to apply the new leasing standard to all open leases as of the adoption date, on a prospective basis. This guidance will be effective on January 1, 2019, with early adoption permitted. We plan to adopt the lease accounting guidance on January 1, 2019, on a prospective basis. We intend to elect the transition "package of expedients" which will result in continuing to account for existing leases for which the commencement date is before January 1, 2019, in accordance with Leases (Topic 840) throughout the lease term, including periods after adoption of the new guidance. We expect the adoption of this standard to have an impact of less than one percent of total assets and liabilities on our consolidated balance sheets reflective of the recognition of right-of-use assets and related lease liabilities associated predominantly with noncancelable operating leases. In addition, we do not expect the adoption of this guidance to have a material impact on our consolidated statements of income.

In June 2016, the FASB issued a new accounting standard update (ASU 2016-13, Financial Instruments- Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments), which amends the incurred loss impairment methodology in current GAAP with a methodology that reflects expected credit losses over the life of the loan and requires consideration of a broader range of reasonable and supportable information to inform credit loss estimates. This guidance will be effective January 1, 2020, on a modified retrospective approach, with early adoption permitted, but not before January 1, 2019. We currently have a project team in place and subject matter experts to assist with our review of key interpretive issues and the assessment of our existing credit loss forecasting models and processes against the new guidance to determine what modifications may be required. We are currently evaluating the impact this guidance will have on our financial position, results of operation and stockholders’ equity.

In August 2017, the FASB issued a new accounting standard update (ASU 2017-12, Targeted Improvements to Accounting for Hedging Activities (Topic 815)), which better aligns an entity’s risk management activities and financial reporting for hedging relationships through changes to the designation and measurement guidance for qualifying hedging relationships and the presentation of hedge results. The targeted improvements in the ASU will allow increased flexibility to structure hedges of fixed rate instruments and floating rate instruments. Application of the ASU is expected to reduce the amount of ineffectiveness as the revised accounting guidance will better reflect the economics of risk management activities and will also reduce the volatility associated with foreign currency hedging. The ASU requires the hedging instrument to be presented in the same line item as the hedged item and requires expanded disclosures. There were further amendments, with the issuance of ASU 2018-16, “Derivatives and Hedging (Topic 815)," which provides us with the option to use the Overnight Index Swap ("OIS") rate based on the Secured Overnight Financing Rate ("SOFR") as a U.S. benchmark interest rate for purposes of applying hedge accounting under Topic 815. This guidance will be effective January 1, 2019, with early adoption permitted. We plan to early adopt this

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guidance in the fourth quarter of 2018, effective October 1, 2018. The accounting standard will not have a material impact on our consolidated financial position, results of operations or the disclosures in our Notes to the Consolidated Financial Statements.

In August 2018, the FASB issued a new accounting standard update (ASU No. 2018-13, Fair Value Measurement (Topic 820): Disclosure Framework - Changes to the Disclosure Requirements for Fair Value Measurement). The ASU primarily modifies certain disclosures with respect to Level 3 fair value measurements. This guidance will be effective January 1, 2020, with early adoption permitted. This guidance will not have an impact on our consolidated financial position or results of operations, and we do not expect the adoption of this standard to have a material impact on the disclosures in our Notes to the Consolidated Financial Statements.

Reclassifications

Certain prior period amounts, primarily related to the adoption of new accounting guidance, have been reclassified to conform to current period presentations.

2. Stockholders' Equity and EPS

Accumulated Other Comprehensive Income

The following table summarizes the items reclassified out of accumulated other comprehensive income into the Consolidated Statements of Income (unaudited) for the three and nine months endedSeptember 30, 2018 and 2017:

		Three months ended September 30,					Nine months ended September 30,
(Dollars in thousands)	Income Statement Location	2018		2017			2018		2017
Reclassification adjustment for losses (gains) included in net income (1)	Gains on investment securities, net	$	—	$	101		$	—	$	(384	)
Related tax (benefit) expense (1)	Income tax expense	—		(41		)	—		157
Total reclassification adjustment for losses (gains) included in net income, net of tax (1)		$	—	$	60		$	—	$	(227	)

(1) See "Adoption of New Accounting Standards" in Note 1—“Basis of Presentation” of the “Notes to Interim Consolidated Financial Statements (unaudited)” under Part I, Item 1 of this report for additional details.

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EPS

Basic EPS is the amount of earnings available to each share of common stock outstanding during the reporting period. Diluted EPS is the amount of earnings available to each share of common stock outstanding during the reporting period adjusted to include the effect of potentially dilutive common shares. Potentially dilutive common shares include incremental shares issuable for stock options and restricted stock units outstanding under our 2006 Equity Incentive Plan and our ESPP. Potentially dilutive common shares are excluded from the computation of dilutive EPS in periods in which the effect would be antidilutive. The following is a reconciliation of basic EPS to diluted EPS for the three and nine months endedSeptember 30, 2018 and 2017:

	Three months ended September 30,				Nine months ended September 30,
(Dollars and shares in thousands, except per share amounts)	2018		2017		2018		2017
Numerator:
Net income available to common stockholders	$	274,817	$	148,620	$	707,576	$	373,296
Denominator:
Weighted average common shares outstanding—basic	53,235		52,705		53,062		52,530
Weighted average effect of dilutive securities:
Stock options and ESPP	383		343		404		381
Restricted stock units	301		257		334		319
Weighted average common shares outstanding—diluted	53,919		53,305		53,800		53,230
Earnings per common share:
Basic	$	5.16	$	2.82	$	13.33	$	7.11
Diluted	5.10		2.79		13.15		7.01

The following table summarizes the weighted-average common shares excluded from the diluted EPS calculation due to the antidilutive effect for the three and nine months endedSeptember 30, 2018 and 2017:

	Three months ended September 30,		Nine months ended September 30,
(Shares in thousands)	2018	2017	2018	2017
Stock options	86	112	49	61
Restricted stock units	5	5	71	2
Total	91	117	120	63

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Consolidated Statement of Changes in Equity

The following table summarizes the changes in our consolidated equity for the three months ended September 30, 2018 and 2017:

	Common Stock			Additional Paid-in Capital		Retained Earnings		Accumulated Other Comprehensive Income (Loss)			Total SVBFG Stockholders’ Equity			Noncontrolling Interests			Total Equity
(Dollars in thousands)	Shares	Amount
Balance at June 30, 2017	52,684,159	$	53	$	1,283,485	$	2,601,007	$	14,890		$	3,899,435		$	140,600		$	4,040,035
Common stock issued under employee benefit plans, net of restricted stock cancellations	39,495	—		2,370		—		—			2,370			—			2,370
Net income	—	—		—		148,620		—			148,620			5,498			154,118
Capital calls and distributions, net	—	—		—		—		—			—			(8,613		)	(8,613		)
Net change in unrealized gains and losses on AFS securities, net of tax	—	—		—		—		556			556			—			556
Amortization of unrealized holding gains on securities transferred from AFS to HTM, net of tax	—	—		—		—		(953		)	(953		)	—			(953		)
Foreign currency translation adjustments, net of tax	—	—		—		—		1,141			1,141			—			1,141
Share-based compensation, net	—	—		8,644		—		—			8,644			—			8,644
Balance at September 30, 2017	52,723,654	$	53	$	1,294,499	$	2,749,627	$	15,634		$	4,059,813		$	137,485		$	4,197,298
Balance at June 30, 2018	53,210,627	$	53	$	1,346,586	$	3,397,879	$	(86,865	)	$	4,657,653		$	147,188		$	4,804,841
Common stock issued under employee benefit plans, net of restricted stock cancellations	39,628	—		1,943		—		—			1,943			—			1,943
Net income	—	—		—		274,817		—			274,817			6,548			281,365
Capital calls and distributions, net	—	—		—		—		—			—			(8,060		)	(8,060		)
Net change in unrealized gains and losses on AFS securities, net of tax	—	—		—		—		(17,908		)	(17,908		)	—			(17,908		)
Amortization of unrealized holding gains on securities transferred from AFS to HTM, net of tax	—	—		—		—		(1,283		)	(1,283		)	—			(1,283		)
Foreign currency translation adjustments, net of tax	—	—		—		—		(2,354		)	(2,354		)	—			(2,354		)
Share-based compensation, net	—	—		11,501		—		—			11,501			—			11,501
Balance at September 30, 2018	53,250,255	$	53	$	1,360,030	$	3,672,696	$	(108,410	)	$	4,924,369		$	145,676		$	5,070,045

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3. Share-Based Compensation

For the three and nine months endedSeptember 30, 2018 and 2017, we recorded share-based compensation and related tax benefits as follows:

	Three months ended September 30,						Nine months ended September 30,
(Dollars in thousands)	2018			2017			2018			2017
Share-based compensation expense	$	11,501		$	8,644		$	33,968		$	27,739
Income tax benefit related to share-based compensation expense	(2,895		)	(3,154		)	(7,955		)	(9,518		)

Unrecognized Compensation Expense

As of September 30, 2018, unrecognized share-based compensation expense was as follows:

(Dollars in thousands)	Unrecognized   Expense		Weighted Average Expected Recognition Period  - in Years
Stock options	$	13,525	2.91
Restricted stock units	73,037		2.74
Total unrecognized share-based compensation expense	$	86,562

Share-Based Payment Award Activity

The table below provides stock option information related to the 2006 Equity Incentive Plan for the nine months endedSeptember 30, 2018:

	Options		Weighted Average  Exercise Price		Weighted Average Remaining Contractual Life - in Years	Aggregate   Intrinsic Value   of In-The- Money Options
Outstanding at December 31, 2017	808,049		$	105.68
Granted	89,616		305.71
Exercised	(191,585	)	83.37
Forfeited	(9,498	)	187.76
Expired	(2,337	)	60.37
Outstanding at September 30, 2018	694,245		136.68		3.76	$	120,932,288
Vested and expected to vest at September 30, 2018	673,674		134.25		3.70	118,982,041
Exercisable at September 30, 2018	415,993		99.63		2.66	87,856,349

The aggregate intrinsic value of outstanding options shown in the table above represents the pre-tax intrinsic value based on our closing stock price of $310.83 as of September 30, 2018. The total intrinsic value of options exercised during the three and nine months endedSeptember 30, 2018 was $8.5 million and $39.5 million, respectively, compared to $3.8 million and $25.8 million for the comparable 2017 periods.

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The table below provides information for restricted stock units under the 2006 Equity Incentive Plan for the nine months endedSeptember 30, 2018:

	Shares		Weighted Average Grant Date Fair Value
Nonvested at December 31, 2017	637,667		$	135.86
Granted	193,405		302.53
Vested	(213,944	)	130.20
Forfeited	(37,080	)	170.97
Nonvested at September 30, 2018	580,048		191.28

4. Variable Interest Entities

Our involvement with VIEs includes our investments in venture capital and private equity funds, debt funds, private and public portfolio companies and our investments in qualified affordable housing projects.

The following table presents the carrying amounts and classification of significant variable interests in consolidated and unconsolidated VIEs as of September 30, 2018 and December 31, 2017:

(Dollars in thousands)	Consolidated VIEs		Unconsolidated VIEs		Maximum Exposure to Loss in Unconsolidated VIEs
September 30, 2018:
Assets:
Cash and cash equivalents	$	5,470	$	—	$	—
Non-marketable and other equity securities (1)	212,514		524,812		524,812
Accrued interest receivable and other assets	298		—		—
Total assets	$	218,282	$	524,812	$	524,812
Liabilities:
Other liabilities (1)	680		166,867		—
Total liabilities	$	680	$	166,867	$	—
December 31, 2017:
Assets:
Cash and cash equivalents	$	6,674	$	—	$	—
Non-marketable and other equity securities (1)	190,562		346,097		346,097
Accrued interest receivable and other assets	365		—		—
Total assets	$	197,601	$	346,097	$	346,097
Liabilities:
Other liabilities (1)	990		100,891		—
Total liabilities	$	990	$	100,891	$	—

(1) Included in our unconsolidated non-marketable and other equity securities portfolio at September 30, 2018 and December 31, 2017 are investments in qualified affordable housing projects of $261.7 million and $174.2 million, respectively, and related other liabilities consisting of unfunded credit commitments of $166.9 million and $100.9 million, respectively.

Non-marketable and other equity securities

Our non-marketable and other equity securities portfolio primarily represents investments in venture capital and private equity funds, SPD Silicon Valley Bank Co., Ltd. (the Bank's joint venture bank in China (“SPD-SVB”)), debt funds, private and public portfolio companies and investments in qualified affordable housing projects. A majority of these investments are through third- party funds held by SVB Financial in which we do not have controlling or significant variable interests. These investments represent our unconsolidated VIEs in the table above. Our non-marketable and other equity securities portfolio also includes investments from SVB Capital. SVB Capital is the funds management business of SVB Financial Group, which focuses primarily on venture

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capital investments. The SVB Capital family of funds is comprised of direct venture funds that invest in companies and funds of funds that invest in other venture capital funds. We have a controlling and significant variable interest in four of these SVB Capital funds and consolidate these funds for financial reporting purposes.

All investments are generally nonredeemable and distributions are expected to be received through the liquidation of the underlying investments throughout the life of the investment fund. Investments may only be sold or transferred subject to the notice and approval provisions of the underlying investment agreement. Subject to applicable regulatory requirements, including the Volcker Rule, we also make commitments to invest in venture capital and private equity funds. For additional details, see Note 13—“Off-Balance Sheet Arrangements, Guarantees and Other Commitments” of the “Notes to Interim Consolidated Financial Statements (unaudited)” under Part I, Item 1 of this report.

The Bank also has variable interests in low income housing tax credit funds, in connection with fulfilling its responsibilities under the Community Reinvestment Act (“CRA”), that are designed to generate a return primarily through the realization of federal tax credits. These investments are typically limited partnerships in which the general partner, other than the Bank, holds the power over significant activities of the VIE; therefore, these investments are not consolidated. For additional information on our investments in qualified affordable housing projects, see Note 6—“Investment Securities" of the “Notes to Interim Consolidated Financial Statements (unaudited)” under Part I, Item 1 of this report.

As of September 30, 2018, our exposure to loss with respect to the consolidated VIEs is limited to our net assets of $217.6 million and our exposure to loss for our unconsolidated VIEs is equal to our investment in these assets of $524.8 million.

5. Cash and Cash Equivalents

The following table details our cash and cash equivalents at September 30, 2018 and December 31, 2017:

(Dollars in thousands)	September 30, 2018		December 31, 2017
Cash and due from banks (1)	$	3,697,018	$	2,672,290
Securities purchased under agreements to resell (2)	119,181		247,876
Other short-term investment securities	2,942		2,909
Total cash and cash equivalents	$	3,819,141	$	2,923,075

(1) At September 30, 2018 and December 31, 2017, $2.1 billion and $0.6 billion, respectively, of our cash and due from banks was deposited at the Federal Reserve Bank and was earning interest at the Federal Funds target rate, and interest-earning deposits in other financial institutions were $1.1 billion at both September 30, 2018 and December 31, 2017.

(2) At September 30, 2018 and December 31, 2017, securities purchased under agreements to resell were collateralized by U.S. Treasury securities and U.S. agency securities with aggregate fair values of$124.5 millionand $252.8 million, respectively. None of these securities were sold or repledged as of September 30, 2018 and December 31, 2017.

6. Investment Securities

Our investment securities portfolio consists of: (i) an available-for-sale securities portfolio and a held-to-maturity securities portfolio, both of which represent interest-earning investment securities, and (ii) a non-marketable and other equity securities portfolio, which primarily represents investments managed as part of our funds management business as well as public equity securities held as a result of equity warrant assets exercised.

Available-for-Sale Securities

The components of our available-for-sale investment securities portfolio at September 30, 2018 and December 31, 2017 are as follows:

	September 30, 2018
(Dollars in thousands)	Amortized Cost		Unrealized Gains		Unrealized Losses			Carrying Value
Available-for-sale securities, at fair value:
U.S. Treasury securities	$	5,560,828	$	117	$	(59,071	)	$	5,501,874
U.S. agency debentures	1,357,069		—		(10,397		)	1,346,672
Residential mortgage-backed securities:
Agency-issued collateralized mortgage obligations—fixed rate	2,001,048		3		(80,510		)	1,920,541
Agency-issued collateralized mortgage obligations—variable rate	317,356		1,297		(131		)	318,522
Total available-for-sale securities	$	9,236,301	$	1,417	$	(150,109	)	$	9,087,609

	December 31, 2017
(Dollars in thousands)	Amortized Cost		Unrealized Gains		Unrealized Losses			Carrying Value
Available-for-sale securities, at fair value:
U.S. Treasury securities	$	6,865,068	$	1,113	$	(25,679	)	$	6,840,502
U.S. agency debentures	1,569,195		3,569		(5,636		)	1,567,128
Residential mortgage-backed securities:
Agency-issued collateralized mortgage obligations—fixed rate	2,292,311		258		(25,534		)	2,267,035
Agency-issued collateralized mortgage obligations—variable rate	372,481		1,375		(126		)	373,730
Equity securities	31,953		40,525		(209		)	72,269
Total available-for-sale securities	$	11,131,008	$	46,840	$	(57,184	)	$	11,120,664

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The following table summarizes sale activity of available-for-sale securities during the three and nine months endedSeptember 30, 2018 and 2017 as recorded in the line item “Gains on investment securities, net," a component of noninterest income:

	Three months ended September 30,					Nine months ended September 30,
(Dollars in thousands)	2018		2017			2018		2017
Sales proceeds	$	—	$	2,287		$	—	$	7,311
Net realized gains and losses:
Gross realized gains	—		38			—		1,131
Gross realized losses	—		(139		)	—		(747		)
Net realized (losses) gains	$	—	$	(101	)	$	—	$	384

The following tables summarize our unrealized losses on our available-for-sale securities portfolio into categories of less than 12 months, or 12 months or longer as of September 30, 2018 and December 31, 2017:

	September 30, 2018
	Less than 12 months					12 months or longer					Total
(Dollars in thousands)	Fair Value of Investments		Unrealized Losses			Fair Value of Investments		Unrealized Losses			Fair Value of Investments		Unrealized Losses
Available-for-sale securities:
U.S. Treasury securities	$	3,915,282	$	(46,503	)	$	1,438,839	$	(12,568	)	$	5,354,121	$	(59,071	)
U.S. agency debentures	838,609		(4,615		)	508,062		(5,782		)	1,346,671		(10,397		)
Residential mortgage-backed securities:
Agency-issued collateralized mortgage obligations—fixed rate	812,726		(30,350		)	1,103,803		(50,160		)	1,916,529		(80,510		)
Agency-issued collateralized mortgage obligations—variable rate	14,076		(5		)	49,729		(126		)	63,805		(131		)
Total temporarily impaired securities (1)	$	5,580,693	$	(81,473	)	$	3,100,433	$	(68,636	)	$	8,681,126	$	(150,109	)

(1) As of September 30, 2018, we identified a total of 265 investments that were in unrealized loss positions, of which 109 investments totaling $3.1 billion with unrealized losses of $68.6 million have been in an impaired position for a period of time greater than 12 months. As of September 30, 2018, we do not intend to sell any of our impaired securities prior to recovery of our adjusted cost basis, and it is more likely than not that we will not be required to sell any of our securities prior to recovery of our adjusted cost basis. Based on our analysis as of September 30, 2018, we deem all impairments to be temporary, and therefore changes in value for our temporarily impaired securities as of the same date are included in other comprehensive income. Market valuations and impairment analyses on assets in the available-for-sale securities portfolio are reviewed and monitored on a quarterly basis.

	December 31, 2017
	Less than 12 months					12 months or longer					Total
(Dollars in thousands)	Fair Value of Investments		Unrealized Losses			Fair Value of Investments		Unrealized Losses			Fair Value of Investments		Unrealized Losses
Available-for-sale securities:
U.S. Treasury securities	$	5,968,914	$	(23,397	)	$	323,966	$	(2,282	)	$	6,292,880	$	(25,679	)
U.S. agency debentures	736,541		(2,289		)	336,196		(3,347		)	1,072,737		(5,636		)
Residential mortgage-backed securities:
Agency-issued collateralized mortgage obligations—fixed rate	2,193,277		(25,534		)	—		—			2,193,277		(25,534		)
Agency-issued collateralized mortgage obligations—variable rate	13,843		(3		)	53,186		(123		)	67,029		(126		)
Equity securities	624		(209		)	—		—			624		(209		)
Total temporarily impaired securities (1)	$	8,913,199	$	(51,432	)	$	713,348	$	(5,752	)	$	9,626,547	$	(57,184	)

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(1) As of December 31, 2017, we identified a total of 268 investments that were in unrealized loss positions, of which 46 investments totaling $713.3 million with unrealized losses of $5.8 million have been in an impaired position for a period of time greater than 12 months.

The following table summarizes the fixed income securities, carried at fair value, classified as available-for-sale as of September 30, 2018 by the remaining contractual principal maturities. For U.S. Treasury securities and U.S. agency debentures, the expected maturity is the actual contractual maturity of the notes. Expected maturities for mortgage-backed securities may differ significantly from their contractual maturities because mortgage borrowers have the right to prepay outstanding loan obligations with or without penalties. Mortgage-backed securities classified as available-for-sale typically have original contractual maturities from 10 to 30 years whereas expected average lives of these securities tend to be significantly shorter and vary based upon structure and prepayments in lower interest rate environments.

	September 30, 2018
(Dollars in thousands)	Total		One Year or Less		After One Year to Five Years		After Five Years to Ten Years		After Ten Years
U.S. Treasury securities	$	5,501,874	$	2,016,438	$	3,047,620	$	437,816	$	—
U.S. agency debentures	1,346,672		653,271		693,401		—		—
Residential mortgage-backed securities:
Agency-issued collateralized mortgage obligations—fixed rate	1,920,541		—		—		29,113		1,891,428
Agency-issued collateralized mortgage obligations—variable rate	318,522		—		—		—		318,522
Total	$	9,087,609	$	2,669,709	$	3,741,021	$	466,929	$	2,209,950

Held-to-Maturity Securities

The components of our held-to-maturity investment securities portfolio at September 30, 2018 and December 31, 2017 are as follows:

	September 30, 2018
(Dollars in thousands)	Amortized Cost		Unrealized Gains		Unrealized Losses			Fair Value
Held-to-maturity securities, at cost:
U.S. agency debentures (1)	$	641,134	$	85	$	(18,482	)	$	622,737
Residential mortgage-backed securities:
Agency-issued mortgage-backed securities	8,333,088		2		(276,748		)	8,056,342
Agency-issued collateralized mortgage obligations—fixed rate	2,329,065		—		(98,559		)	2,230,506
Agency-issued collateralized mortgage obligations—variable rate	223,374		667		(32		)	224,009
Agency-issued commercial mortgage-backed securities	2,795,952		—		(78,688		)	2,717,264
Municipal bonds and notes	1,577,113		161		(55,894		)	1,521,380
Total held-to-maturity securities	$	15,899,726	$	915	$	(528,403	)	$	15,372,238

(1) Consists of pools of Small Business Investment Company debentures issued and guaranteed by the U.S. Small Business Administration, an independent agency of the United States.

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	December 31, 2017
(Dollars in thousands)	Amortized Cost		Unrealized Gains		Unrealized Losses			Fair Value
Held-to-maturity securities, at cost:
U.S. agency debentures (1)	$	659,979	$	3,167	$	(1,601	)	$	661,545
Residential mortgage-backed securities:
Agency-issued mortgage-backed securities	6,304,969		4,854		(43,528		)	6,266,295
Agency-issued collateralized mortgage obligations—fixed rate	2,829,979		23		(54,372		)	2,775,630
Agency-issued collateralized mortgage obligations—variable rate	255,782		733		(34		)	256,481
Agency-issued commercial mortgage-backed securities	1,868,985		694		(25,563		)	1,844,116
Municipal bonds and notes	743,761		3,452		(3,000		)	744,213
Total held-to-maturity securities	$	12,663,455	$	12,923	$	(128,098	)	$	12,548,280

(1) Consists of pools of Small Business Investment Company debentures issued and guaranteed by the U.S. Small Business Administration, an independent agency of the United States.

The following tables summarize our unrealized losses on our held-to-maturity securities portfolio into categories of less than 12 months and 12 months or longer as of September 30, 2018 and December 31, 2017:

	September 30, 2018
	Less than 12 months					12 months or longer					Total
(Dollars in thousands)	Fair Value of Investments		Unrealized Losses			Fair Value of Investments		Unrealized Losses			Fair Value of Investments		Unrealized Losses
Held-to-maturity securities:
U.S. agency debentures	$	549,916	$	(14,744	)	$	61,635	$	(3,738	)	$	611,551	$	(18,482	)
Residential mortgage-backed securities:
Agency-issued mortgage-backed securities	5,514,402		(155,580		)	2,541,848		(121,168		)	8,056,250		(276,748		)
Agency-issued collateralized mortgage obligations—fixed rate	77,011		(2,285		)	2,153,494		(96,274		)	2,230,505		(98,559		)
Agency-issued collateralized mortgage obligations—variable rate	3,504		(1		)	8,445		(31		)	11,949		(32		)
Agency-issued commercial mortgage-backed securities	1,595,146		(30,149		)	1,122,118		(48,539		)	2,717,264		(78,688		)
Municipal bonds and notes	1,429,117		(51,806		)	83,486		(4,088		)	1,512,603		(55,894		)
Total temporarily impaired securities (1)	$	9,169,096	$	(254,565	)	$	5,971,026	$	(273,838	)	$	15,140,122	$	(528,403	)

(1) As of September 30, 2018, we identified a total of 1,433 investments that were in unrealized loss positions, of which 454 investments totaling $6.0 billion with unrealized losses of $273.8 million have been in an impaired position for a period of time greater than 12 months. As of September 30, 2018, we do not intend to sell any of our impaired securities prior to recovery of our adjusted cost basis, and it is more likely than not that we will not be required to sell any of our securities prior to recovery of our adjusted cost basis, which is consistent with our classification of these securities. Based on our analysis as of September 30, 2018, we deem all impairments to be temporary. Market valuations and impairment analyses on assets in the held-to-maturity securities portfolio are reviewed and monitored on a quarterly basis.

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	December 31, 2017
	Less than 12 months					12 months or longer					Total
(Dollars in thousands)	Fair Value of Investments		Unrealized Losses			Fair Value of Investments		Unrealized Losses			Fair Value of Investments		Unrealized Losses
Held-to-maturity securities:
U.S. agency debentures	$	104,688	$	(1,601	)	$	—	$	—		$	104,688	$	(1,601	)
Residential mortgage-backed securities:
Agency-issued mortgage-backed securities	4,270,377		(34,092		)	408,913		(9,436		)	4,679,290		(43,528		)
Agency-issued collateralized mortgage obligations—fixed rate	1,011,709		(13,631		)	1,741,614		(40,741		)	2,753,323		(54,372		)
Agency-issued collateralized mortgage obligations—variable rate	—		—			9,812		(34		)	9,812		(34		)
Agency-issued commercial mortgage-backed securities	979,361		(11,566		)	773,712		(13,997		)	1,753,073		(25,563		)
Municipal bonds and notes	344,796		(2,103		)	32,844		(897		)	377,640		(3,000		)
Total temporarily impaired securities (1)	$	6,710,931	$	(62,993	)	$	2,966,895	$	(65,105	)	$	9,677,826	$	(128,098	)

(1) As of December 31, 2017, we identified a total of 753 investments that were in unrealized loss positions, of which 237 investments totaling $3.0 billion with unrealized losses of $65.1 million have been in an impaired position for a period of time greater than 12 months.

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The following table summarizes the remaining contractual principal maturities on fixed income investment securities classified as held-to-maturity as of September 30, 2018. For U.S. agency debentures, the expected maturity is the actual contractual maturity of the notes. Expected maturities for mortgage-backed securities may differ significantly from their contractual maturities because mortgage borrowers have the right to prepay outstanding loan obligations with or without penalties. Mortgage-backed securities classified as held-to-maturity typically have original contractual maturities from 10 to 30 years whereas expected average lives of these securities tend to be significantly shorter and vary based upon structure and prepayments in lower interest rate environments.

	September 30, 2018
	Total				One Year or Less				After One Year to Five Years				After Five Years to Ten Years				After Ten Years
(Dollars in thousands)	Amortized Cost		Fair Value		Amortized Cost		Fair Value		Amortized Cost		Fair Value		Amortized Cost		Fair Value		Amortized Cost		Fair Value
U.S. agency debentures	$	641,134	$	622,737	$	—	$	—	$	104,550	$	102,498	$	536,584	$	520,239	$	—	$	—
Residential mortgage-backed securities:
Agency-issued mortgage-backed securities	8,333,088		8,056,342		—		—		179,847		174,664		859,233		821,883		7,294,008		7,059,795
Agency-issued collateralized mortgage obligations—fixed rate	2,329,065		2,230,506		—		—		—		—		474,668		452,428		1,854,397		1,778,078
Agency-issued collateralized mortgage obligations—variable rate	223,374		224,009		—		—		—		—		—		—		223,374		224,009
Agency-issued commercial mortgage-backed securities	2,795,952		2,717,264		—		—		—		—		—		—		2,795,952		2,717,264
Municipal bonds and notes	1,577,113		1,521,380		8,376		8,373		74,518		73,331		256,453		245,277		1,237,766		1,194,399
Total	$	15,899,726	$	15,372,238	$	8,376	$	8,373	$	358,915	$	350,493	$	2,126,938	$	2,039,827	$	13,405,497	$	12,973,545

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Non-marketable and Other Equity Securities

The components of our non-marketable and other equity securities portfolio at September 30, 2018 and December 31, 2017 are as follows:

(Dollars in thousands)	September 30, 2018		December 31, 2017
Non-marketable and other equity securities:
Non-marketable securities (fair value accounting):
Consolidated venture capital and private equity fund investments (1)	$	126,467	$	128,111
Unconsolidated venture capital and private equity fund investments (2)	208,953		98,548
Other investments without a readily determinable fair value (3)	25,253		27,680
Other equity securities in public companies (fair value accounting) (4)	30,460		310
Non-marketable securities (equity method accounting) (5):
Venture capital and private equity fund investments	112,537		89,809
Debt funds	5,241		21,183
Other investments	125,632		111,198
Investments in qualified affordable housing projects, net (6)	261,706		174,214
Total non-marketable and other equity securities	$	896,249	$	651,053

(1) The following table shows the amounts of venture capital and private equity fund investments held by the following consolidated funds and our ownership percentage of each fund at September 30, 2018 and December 31, 2017 (fair value accounting):

	September 30, 2018				December 31, 2017
(Dollars in thousands)	Amount		Ownership %		Amount		Ownership %
Strategic Investors Fund, LP	$	12,733	12.6	%	$	14,673	12.6	%
Capital Preferred Return Fund, LP	56,453		20.0		54,147		20.0
Growth Partners, LP	56,280		33.0		58,372		33.0
CP I, LP	1,001		10.7		919		10.7
Total consolidated venture capital and private equity fund investments	$	126,467			$	128,111

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(2) The carrying value represents investments in 220 and 235 funds (primarily venture capital funds) at September 30, 2018 and December 31, 2017, respectively, where our ownership interest is typically less than 5% of the voting interests of each such fund and in which we do not have the ability to exercise significant influence over the partnerships operating activities and financial policies. Effective January 1, 2018, we adopted ASU 2016-01, Recognition and Measurement of Financial Assets and Financial Liabilities which eliminated the concept of cost method accounting. On a prospective basis, we will carry our unconsolidated venture capital and private equity fund investments at fair value based on the fund investments' net asset values per share as obtained from the general partners of the investments. For each fund investment, we adjust the net asset value per share for differences between our measurement date and the date of the fund investment’s net asset value by using the most recently available financial information from the investee general partner, for example June 30^th, for our September 30^th consolidated financial statements, adjusted for any contributions paid, distributions received from the investment, and significant fund transactions or market events during the reporting period. We recorded a cumulative adjustment to opening retained earnings on January 1, 2018 for the difference between fair value and cost for these fund investments. The estimated fair value and carrying value of these venture capital and private equity fund investments was $209.0 million as of September 30, 2018. As of December 31, 2017, these investments were carried at cost and had a carrying value of $98.5 million.

(3) Effective January 1, 2018, we adopted ASU 2016-01, Recognition and Measurement of Financial Assets and Financial Liabilities which eliminated the concept of cost method accounting. On a prospective basis, we will report our other investments in the line item "Other investments without a readily determinable fair value". These investments include direct equity investments in private companies. The carrying value is based on the price at which the investment was acquired plus or minus changes resulting from observable price changes in orderly transactions for identical or similar investments. We consider a range of factors when adjusting the fair value of these investments, including, but not limited to, the term and nature of the investment, local market conditions, values for comparable securities, current and projected operating performance, exit strategies, financing transactions subsequent to the acquisition of the investment and a discount for certain investments that have lock-up restrictions or other features that indicate a discount to fair value is warranted. The following table shows the changes to the carrying amount of other investments without a readily determinable fair value for the nine months endedSeptember 30, 2018:

(Dollars in thousands)	Nine months ended September 30, 2018
Carrying value as of January 1, 2018	$	27,680
Upward carrying value adjustments	4,854
Downward carrying value adjustments	(1,729		)
Additions	3,870
Sales and dispositions	(9,422		)
Carrying value as of September 30, 2018	$	25,253

(4) Investments classified as other equity securities (fair value accounting) represent shares held in public companies as a result of exercising public equity warrant assets and direct equity investments in public companies held by our consolidated funds. Effective January 1, 2018 we adopted ASU 2016-01 Recognition and Measurement of Financial Assets and Financial Liabilities which requires equity securities to be measured at fair value with changes in the fair value recognized through net income. Prior to January 1, 2018 we reported equity securities in public companies that we held as a result of exercising public equity warrant assets in available-for-sale securities. On a prospective basis, these equity securities will be reported in non-marketable and other equity securities.

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(5) The following table shows the carrying value and our ownership percentage of each investment at September 30, 2018 and December 31, 2017 (equity method accounting):

	September 30, 2018				December 31, 2017
(Dollars in thousands)	Amount		Ownership %		Amount		Ownership %
Venture capital and private equity fund investments:
Strategic Investors Fund II, LP	$	4,739	8.6	%	$	6,342	8.6	%
Strategic Investors Fund III, LP	18,176		5.9		18,758		5.9
Strategic Investors Fund IV, LP	29,445		5.0		25,551		5.0
Strategic Investors Fund V funds	24,245		Various		16,856		Various
CP II, LP (i)	6,865		5.1		6,700		5.1
Other venture capital and private equity fund investments	29,067		Various		15,602		Various
Total venture capital and private equity fund investments	$	112,537			$	89,809
Debt funds:
Gold Hill Capital 2008, LP (ii)	$	3,267	15.5	%	$	18,690	15.5	%
Other debt funds	1,974		Various		2,493		Various
Total debt funds	$	5,241			$	21,183
Other investments:
SPD Silicon Valley Bank Co., Ltd.	$	75,314	50.0	%	$	75,337	50.0	%
Other investments	50,318		Various		35,861		Various
Total other investments	$	125,632			$	111,198

(i) Our ownership includes direct ownership interest of 1.3 percent and indirect ownership interest of 3.8 percent through our investments in Strategic Investors Fund II, LP.

(ii) Our ownership includes direct ownership interest of 11.5 percent in the fund and an indirect interest in the fund through our investment in Gold Hill Capital 2008, LLC of 4.0 percent.

(6) The following table presents the balances of our investments in qualified affordable housing projects and related unfunded commitments included as a component of “other liabilities” on our consolidated balance sheets at September 30, 2018 and December 31, 2017:

(Dollars in thousands)	September 30, 2018		December 31, 2017
Investments in qualified affordable housing projects, net	$	261,706	$	174,214
Other liabilities	166,867		100,891

The following table presents other information relating to our investments in qualified affordable housing projects for the three and nine months endedSeptember 30, 2018 and 2017:

	Three months ended September 30,				Nine months ended September 30,
(Dollars in thousands)	2018		2017		2018		2017
Tax credits and other tax benefits recognized	$	6,283	$	4,539	$	16,912	$	13,199
Amortization expense included in provision for income    taxes (i)	4,773		3,533		14,269		10,154

(i) All investments are amortized using the proportional amortization method and amortization expense is included in the provision for income taxes.

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The following table presents the net gains on non-marketable and other equity securities for the three and nine months endedSeptember 30, 2018 and 2017 as recorded in the line item “Gains on investment securities, net," a component of noninterest income:

	Three months ended September 30,					Nine months ended September 30,
(Dollars in thousands)	2018		2017			2018			2017
Net gains on non-marketable and other equity securities:
Non-marketable securities (fair value accounting):
Consolidated venture capital and private equity fund investments	$	2,928	$	4,473		$	18,971		$	20,649
Unconsolidated venture capital and private equity fund investments (1)	6,240		4,697			37,095			13,928
Other investments without a readily determinable fair value (1)	2,509		(49		)	4,310			3,354
Other equity securities in public companies (fair value accounting) (1)	4,407		387			(17,786		)	280
Non-marketable securities (equity method accounting):
Venture capital and private equity fund investments	11,341		4,319			30,122			10,710
Debt funds	1,473		2,445			(100		)	2,696
Other investments	3,295		(933		)	4,753			(3,163		)
Total net gains on non-marketable and other equity securities	$	32,193	$	15,339		$	77,365		$	48,454
Less: Net gains (losses) on non-marketable and other equity securities sold	357		(49		)	(20,806		)	3,355
Unrealized net gains on non-marketable and other equity securities still held	$	31,836	$	15,388		$	98,171		$	45,099

(1) Prior period amounts are not determined in a manner consistent with the current period presentation due to the adoption of accounting standard update (ASU 2016-01, Recognition and Measurement of Financial Assets and Financial Liabilities (Topic 825)).

7. Loans, Allowance for Loan Losses and Allowance for Unfunded Credit Commitments

We serve a variety of commercial clients in the technology, life science/healthcare, private equity/venture capital and premium wine industries. Our technology clients generally tend to be in the industries of hardware (semiconductors, communications, data, storage, and electronics), software/internet (such as infrastructure software, applications, software services, digital content and advertising technology), and energy and resource innovation (“ERI”). Because of the diverse nature of ERI products and services, for our loan-related reporting purposes, ERI-related loans are reported under our hardware, software/internet, life science/healthcare and other commercial loan categories, as applicable. Our life science/healthcare clients primarily tend to be in the industries of biotechnology, medical devices, healthcare information technology and healthcare services. Loans made to private equity/venture capital firm clients typically enable them to fund investments prior to their receipt of funds from capital calls. Loans to the premium wine industry focus on vineyards and wineries that produce grapes and wines of high quality.

In addition to commercial loans, we make consumer loans through SVB Private Bank and provide real estate secured loans to eligible employees through our EHOP. Our private banking clients are primarily private equity/venture capital professionals and executive leaders in the innovation companies they support. These products and services include real estate secured home equity lines of credit, which may be used to finance real estate investments and loans used to purchase, renovate or refinance personal residences. These products and services also include restricted stock purchase loans and capital call lines of credit.

We also provide community development loans made as part of our responsibilities under the Community Reinvestment Act. These loans are included within “Construction loans” below and are primarily secured by real estate.

The composition of loans, net of unearned income of $174 million and $148 million at September 30, 2018 and December 31, 2017, respectively, is presented in the following table:

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(Dollars in thousands)	September 30, 2018		December 31, 2017
Commercial loans:
Software/internet	$	6,258,724	$	6,172,531
Hardware	1,306,709		1,193,599
Private equity/venture capital	13,360,511		9,952,377
Life science/healthcare	2,302,453		1,808,827
Premium wine	227,498		204,105
Other	256,413		365,724
Total commercial loans	23,712,308		19,697,163
Real estate secured loans:
Premium wine (1)	685,941		669,053
Consumer loans (2)	2,556,906		2,300,506
Other	40,879		42,068
Total real estate secured loans	3,283,726		3,011,627
Construction loans	81,163		68,546
Consumer loans	417,718		328,980
Total loans, net of unearned income (3)	$	27,494,915	$	23,106,316

(1) Included in our premium wine portfolio are gross construction loans of $92 million and $100 million at September 30, 2018 and December 31, 2017, respectively.

(2) Consumer loans secured by real estate at September 30, 2018 and December 31, 2017 were comprised of the following:

(Dollars in thousands)	September 30, 2018		December 31, 2017
Loans for personal residence	$	2,196,948	$	1,995,840
Loans to eligible employees	285,186		243,118
Home equity lines of credit	74,772		61,548
Consumer loans secured by real estate	$	2,556,906	$	2,300,506

(3) Included within our total loan portfolio are credit card loans of $342 million and $270 million at September 30, 2018 and December 31, 2017, respectively.

Credit Quality

The composition of loans, net of unearned income of $174 million and $148 million at September 30, 2018 and December 31, 2017, respectively, broken out by portfolio segment and class of financing receivable, is as follows:

(Dollars in thousands)	September 30, 2018		December 31, 2017
Commercial loans:
Software/internet	$	6,258,724	$	6,172,531
Hardware	1,306,709		1,193,599
Private equity/venture capital	13,360,511		9,952,377
Life science/healthcare	2,302,453		1,808,827
Premium wine	913,439		873,158
Other	378,455		476,338
Total commercial loans	24,520,291		20,476,830
Consumer loans:
Real estate secured loans	2,556,906		2,300,506
Other consumer loans	417,718		328,980
Total consumer loans	2,974,624		2,629,486
Total loans, net of unearned income	$	27,494,915	$	23,106,316

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The following table summarizes the aging of our gross loans, broken out by portfolio segment and class of financing receivable as of September 30, 2018 and December 31, 2017:

(Dollars in thousands)	30 - 59   Days Past   Due		60 - 89   Days Past   Due		Equal to or Greater Than 90   Days Past   Due		Total Past   Due		Current		Loans Past Due   90 Days or More Still Accruing Interest
September 30, 2018:
Commercial loans:
Software/internet	$	17,067	$	4,842	$	116	$	22,025	$	6,175,651	$	116
Hardware	491		99		—		590		1,298,215		—
Private equity/venture capital	7,556		—		2		7,558		13,357,777		2
Life science/healthcare	9,620		897		45		10,562		2,330,483		45
Premium wine	1,594		—		—		1,594		910,356		—
Other	340		27		—		367		400,547		—
Total commercial loans	36,668		5,865		163		42,696		24,473,029		163
Consumer loans:
Real estate secured loans	8,389		—		—		8,389		2,540,950		—
Other consumer loans	2,111		—		—		2,111		415,582		—
Total consumer loans	10,500		—		—		10,500		2,956,532		—
Total gross loans excluding impaired loans	47,168		5,865		163		53,196		27,429,561		163
Impaired loans	2,345		970		29,197		32,512		153,560		—
Total gross loans	$	49,513	$	6,835	$	29,360	$	85,708	$	27,583,121	$	163
December 31, 2017:
Commercial loans:
Software/internet	$	14,257	$	6,526	$	141	$	20,924	$	6,101,147	$	141
Hardware	1,145		77		50		1,272		1,163,278		50
Private equity/venture capital	86,566		38,580		—		125,146		9,835,317		—
Life science/healthcare	4,390		191		—		4,581		1,841,692		—
Premium wine	418		—		—		418		871,074		—
Other	445		—		—		445		490,292		—
Total commercial loans	107,221		45,374		191		152,786		20,302,800		191
Consumer loans:
Real estate secured loans	2,164		532		—		2,696		2,292,980		—
Other consumer loans	796		—		—		796		327,234		—
Total consumer loans	2,960		532		—		3,492		2,620,214		—
Total gross loans excluding impaired loans	110,181		45,906		191		156,278		22,923,014		191
Impaired loans	1,344		11,902		30,403		43,649		131,212		—
Total gross loans	$	111,525	$	57,808	$	30,594	$	199,927	$	23,054,226	$	191

29

The following table summarizes our impaired loans as they relate to our allowance for loan losses, broken out by portfolio segment and class of financing receivable as of September 30, 2018 and December 31, 2017:

(Dollars in thousands)	Impaired loans for   which there is a related allowance for loan losses		Impaired loans for   which there is no related allowance for loan losses		Total carrying value of impaired loans		Total unpaid principal of impaired loans
September 30, 2018:
Commercial loans:
Software/internet	$	64,197	$	55,442	$	119,639	$	145,122
Hardware	2,431		17,249		19,680		31,804
Private equity/venture capital	—		3,700		3,700		3,700
Life science/healthcare	22,300		14,125		36,425		44,065
Premium wine	306		2,010		2,316		2,375
Other	—		—		—		—
Total commercial loans	89,234		92,526		181,760		227,066
Consumer loans:
Real estate secured loans	3,990		322		4,312		5,996
Other consumer loans	—		—		—		—
Total consumer loans	3,990		322		4,312		5,996
Total	$	93,224	$	92,848	$	186,072	$	233,062
December 31, 2017:
Commercial loans:
Software/internet	$	49,645	$	61,009	$	110,654	$	129,006
Hardware	15,637		20,713		36,350		41,721
Private equity/venture capital	658		—		658		984
Life science/healthcare	20,521		1,166		21,687		26,360
Premium wine	—		2,877		2,877		2,911
Other	32		—		32		165
Total commercial loans	86,493		85,765		172,258		201,147
Consumer loans:
Real estate secured loans	1,331		850		2,181		3,712
Other consumer loans	422		—		422		436
Total consumer loans	1,753		850		2,603		4,148
Total	$	88,246	$	86,615	$	174,861	$	205,295

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The following tables summarize our average impaired loans and interest income recognized on impaired loans, broken out by portfolio segment and class of financing receivable for the three and nine months endedSeptember 30, 2018 and 2017:

Three months ended September 30,	Average impaired loans				Interest income recognized on impaired loans
(Dollars in thousands)	2018		2017		2018		2017
Commercial loans:
Software/internet	$	118,840	$	121,290	$	607	$	767
Hardware	27,922		35,932		410		419
Private equity/venture capital	1,233		644		—		3
Life science/healthcare	38,545		25,796		365		21
Premium wine	2,384		3,625		35		39
Other	—		348		—		—
Total commercial loans	188,924		187,635		1,417		1,249
Consumer loans:
Real estate secured loans	4,330		1,306		4		24
Other consumer loans	—		1,966		—		—
Total consumer loans	4,330		3,272		4		24
Total average impaired loans	$	193,254	$	190,907	$	1,421	$	1,273

Nine months ended September 30,	Average impaired loans				Interest income recognized on impaired loans
(Dollars in thousands)	2018		2017		2018		2017
Commercial loans:
Software/internet	$	112,576	$	122,527	$	991	$	1,646
Hardware	34,469		33,271		499		518
Private equity/venture capital	536		443		—		8
Life science/healthcare	27,671		33,590		376		60
Premium wine	2,586		3,353		103		115
Other	130		706		—		—
Total commercial loans	177,968		193,890		1,969		2,347
Consumer loans:
Real estate secured loans	3,953		1,385		12		24
Other consumer loans	477		1,931		—		—
Total consumer loans	4,430		3,316		12		24
Total average impaired loans	$	182,398	$	197,206	$	1,981	$	2,371

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The following tables summarize the activity relating to our allowance for loan losses for the three and nine months endedSeptember 30, 2018 and 2017, broken out by portfolio segment:

Three months ended September 30, 2018	Beginning Balance June 30, 2018		Charge-offs			Recoveries		Provision for (Reduction of) Loan Losses			Foreign Currency Translation Adjustments			Ending Balance September 30, 2018
(Dollars in thousands)
Commercial loans:
Software/internet	$	102,648	$	(6,304	)	$	841	$	16,640		$	(335	)	$	113,490
Hardware	34,695		(12,697		)	227		(1,763		)	36			20,498
Private equity/venture capital	89,409		—			3		1,632			(33		)	91,011
Life science/healthcare	35,064		(2,076		)	189		2,322			(47		)	35,452
Premium wine	3,438		—			—		125			(3		)	3,560
Other	2,896		(1,128		)	771		118			(2		)	2,655
Total commercial loans	268,150		(22,205		)	2,031		19,074			(384		)	266,666
Total consumer loans	18,559		—			133		362			(7		)	19,047
Total allowance for loan losses	$	286,709	$	(22,205	)	$	2,164	$	19,436		$	(391	)	$	285,713

Three months ended September 30, 2017	Beginning Balance June 30, 2017		Charge-offs			Recoveries		Provision for (Reduction of) Loan Losses			Foreign Currency Translation Adjustments			Ending Balance September 30, 2017
(Dollars in thousands)
Commercial loans:
Software/internet	$	92,937	$	(8,791	)	$	426	$	7,241		$	199		$	92,012
Hardware	27,800		(2,453		)	115		5,681			156			31,299
Private equity/venture capital	66,785		—			—		10,142			279			77,206
Life science/healthcare	27,730		(1,083		)	63		(1,621		)	(45		)	25,044
Premium wine	3,133		—			—		362			10			3,505
Other	4,135		—			947		(931		)	(26		)	4,125
Total commercial loans	222,520		(12,327		)	1,551		20,874			573			233,191
Total consumer loans	13,976		(11		)	277		1,535			42			15,819
Total allowance for loan losses	$	236,496	$	(12,338	)	$	1,828	$	22,409		$	615		$	249,010

Nine months ended September 30, 2018	Beginning Balance December 31, 2017		Charge-offs			Recoveries		Provision for (Reduction of) Loan Losses			Foreign Currency Translation Adjustments			Ending Balance September 30, 2018
(Dollars in thousands)
Commercial loans:
Software/internet	$	96,104	$	(26,377	)	$	1,818	$	42,620		$	(675	)	$	113,490
Hardware	27,614		(16,111		)	1,458		7,788			(251		)	20,498
Private equity/venture capital	82,468		(112		)	13		8,200			442			91,011
Life science/healthcare	24,924		(2,940		)	245		13,829			(606		)	35,452
Premium wine	3,532		—			—		42			(14		)	3,560
Other	3,941		(2,391		)	1,874		(775		)	6			2,655
Total commercial loans	238,583		(47,931		)	5,408		71,704			(1,098		)	266,666
Total consumer loans	16,441		(289		)	470		2,384			41			19,047
Total allowance for loan losses	$	255,024	$	(48,220	)	$	5,878	$	74,088		$	(1,057	)	$	285,713

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Nine months ended September 30, 2017	Beginning Balance December 31, 2016		Charge-offs			Recoveries		Provision for (Reduction of) Loan Losses			Foreign Currency Translation Adjustments			Ending Balance September 30, 2017
(Dollars in thousands)
Commercial loans:
Software/internet	$	97,388	$	(36,172	)	$	2,833	$	27,487		$	476		$	92,012
Hardware	31,166		(6,726		)	459		6,075			325			31,299
Private equity/venture capital	50,299		—			—		26,111			796			77,206
Life science/healthcare	25,446		(7,493		)	107		6,906			78			25,044
Premium wine	4,115		—			—		(567		)	(43		)	3,505
Other	4,768		(1,047		)	1,424		(1,005		)	(15		)	4,125
Total commercial loans	213,182		(51,438		)	4,823		65,007			1,617			233,191
Total consumer loans	12,184		(11		)	1,332		2,266			48			15,819
Total allowance for loan losses	$	225,366	$	(51,449	)	$	6,155	$	67,273		$	1,665		$	249,010

The following table summarizes the activity relating to our allowance for unfunded credit commitments for the three and nine months endedSeptember 30, 2018 and 2017:

	Three months ended September 30,					Nine months ended September 30,
(Dollars in thousands)	2018			2017		2018			2017
Allowance for unfunded credit commitments, beginning balance	$	54,104		$	47,000	$	51,770		$	45,265
(Reduction of) provision for unfunded credit commitments	(2,262		)	1,113		138			2,789
Foreign currency translation adjustments	(34		)	59		(100		)	118
Allowance for unfunded credit commitments, ending balance (1)	$	51,808		$	48,172	$	51,808		$	48,172

(1) See Note 13—“Off-Balance Sheet Arrangements, Guarantees and Other Commitments” of the “Notes to Interim Consolidated Financial Statements (unaudited)” under Part I, Item 1 of this report for additional disclosures related to our commitments to extend credit.

The following table summarizes the allowance for loan losses individually and collectively evaluated for impairment as of September 30, 2018 and December 31, 2017, broken out by portfolio segment:

	September 30, 2018								December 31, 2017
	Individually Evaluated for   Impairment				Collectively Evaluated for   Impairment				Individually Evaluated for   Impairment				Collectively Evaluated for   Impairment
(Dollars in thousands)	Allowance for loan losses		Recorded investment in loans		Allowance for loan losses		Recorded investment in loans		Allowance for loan losses		Recorded investment in loans		Allowance for loan losses		Recorded investment in loans
Commercial loans:
Software/internet	$	36,856	$	119,639	$	76,634	$	6,139,085	$	23,088	$	110,654	$	73,016	$	6,061,877
Hardware	764		19,680		19,734		1,287,029		8,450		36,350		19,164		1,157,249
Private equity/venture capital	—		3,700		91,011		13,356,811		330		658		82,138		9,951,719
Life science/healthcare	11,951		36,425		23,501		2,266,028		9,315		21,687		15,609		1,787,140
Premium wine	3		2,316		3,557		911,123		—		2,877		3,532		870,281
Other	—		—		2,655		378,455		32		32		3,909		476,306
Total commercial loans	49,574		181,760		217,092		24,338,531		41,215		172,258		197,368		20,304,572
Total consumer loans	418		4,312		18,629		2,970,312		578		2,603		15,863		2,626,883
Total	$	49,992	$	186,072	$	235,721	$	27,308,843	$	41,793	$	174,861	$	213,231	$	22,931,455

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Credit Quality Indicators

For each individual client, we establish an internal credit risk rating for that loan, which is used for assessing and monitoring credit risk as well as performance of the loan and the overall portfolio. Our internal credit risk ratings are also used to summarize the risk of loss due to failure by an individual borrower to repay the loan. For our internal credit risk ratings, each individual loan is given a risk rating of 1 through 10. Loans risk-rated 1 through 4 are performing loans and translate to an internal rating of “Pass," with loans risk-rated 1 being cash secured. Loans risk-rated 5 through 7 are performing loans; however, we consider them as demonstrating higher risk, which requires more frequent review of the individual exposures; these translate to an internal rating of “Performing (Criticized)." When full repayment of a criticized loan has been deemed improbable under the original contractual terms but full repayment remains probable overall, the loan is considered to be a “Performing Impaired (Criticized)” loan. All of our nonaccrual loans are risk-rated 8 or 9 and are classified under the nonperforming impaired category. (For further description of nonaccrual loans, refer to Note 2—“Summary of Significant Accounting Policies” under Part II, Item 8 of our 2017 Form 10-K). Loans rated 10 are charged-off and are not included as part of our loan portfolio balance. We review our credit quality indicators for performance and appropriateness of risk ratings as part of our evaluation process for our allowance for loan losses.

The following table summarizes the credit quality indicators, broken out by portfolio segment and class of financing receivables as of September 30, 2018 and December 31, 2017:

(Dollars in thousands)	Pass		Performing (Criticized)		Performing Impaired (Criticized)		Nonperforming Impaired (Nonaccrual)		Total
September 30, 2018:
Commercial loans:
Software/internet	$	5,613,023	$	584,653	$	37,204	$	82,435	$	6,317,315
Hardware	1,245,532		53,273		17,249		2,431		1,318,485
Private equity/venture capital	13,362,294		3,041		—		3,700		13,369,035
Life science/healthcare	2,172,679		168,366		14,125		22,300		2,377,470
Premium wine	862,311		49,639		2,010		306		914,266
Other	398,263		2,651		—		—		400,914
Total commercial loans	23,654,102		861,623		70,588		111,172		24,697,485
Consumer loans:
Real estate secured loans	2,529,708		19,631		322		3,990		2,553,651
Other consumer loans	417,344		349		—		—		417,693
Total consumer loans	2,947,052		19,980		322		3,990		2,971,344
Total gross loans	$	26,601,154	$	881,603	$	70,910	$	115,162	$	27,668,829
December 31, 2017:
Commercial loans:
Software/internet	$	5,655,739	$	466,332	$	31,794	$	78,860	$	6,232,725
Hardware	1,112,574		51,976		20,165		16,185		1,200,900
Private equity/venture capital	9,955,082		5,381		—		658		9,961,121
Life science/healthcare	1,720,613		125,660		1,167		20,520		1,867,960
Premium wine	834,537		36,955		2,476		401		874,369
Other	469,721		21,016		—		32		490,769
Total commercial loans	19,748,266		707,320		55,602		116,656		20,627,844
Consumer loans:
Real estate secured loans	2,282,375		13,301		—		2,181		2,297,857
Other consumer loans	326,851		1,179		—		422		328,452
Total consumer loans	2,609,226		14,480		—		2,603		2,626,309
Total gross loans	$	22,357,492	$	721,800	$	55,602	$	119,259	$	23,254,153

34

Troubled Debt Restructurings

As of September 30, 2018, we had 20 TDRs with a total carrying value of $85.8 million where concessions have been granted to borrowers experiencing financial difficulties, in an attempt to maximize collection. There were $0.8 millionof unfunded commitments available for funding to the clients associated with these TDRs as of September 30, 2018.

The following table summarizes our loans modified in TDRs, broken out by portfolio segment and class of financing receivables at September 30, 2018 and December 31, 2017:

(Dollars in thousands)	September 30, 2018		December 31, 2017
Loans modified in TDRs:
Commercial loans:
Software/internet	$	49,078	$	73,455
Hardware	12,499		51,132
Private equity/venture capital	—		350
Life science/healthcare	20,942		19,235
Premium wine	2,964		3,198
Total commercial loans	85,483		147,370
Consumer loans:
Other consumer loans	322		423
Total	$	85,805	$	147,793

The following table summarizes the recorded investment in loans modified in TDRs, broken out by portfolio segment and class of financing receivable, for modifications made during the three and nine months endedSeptember 30, 2018 and 2017:

	Three months ended September 30,				Nine months ended September 30,
(Dollars in thousands)	2018		2017		2018		2017
Loans modified in TDRs during the period:
Commercial loans:
Software/internet	$	—	$	10,876	$	14,069	$	26,034
Hardware	10,398		396		12,347		396
Life science/healthcare	—		—		5,909		—
Premium wine	—		—		—		185
Total commercial loans	10,398		11,272		32,325		26,615
Consumer loans:
Other consumer loans	—		—		322		—
Total loans modified in TDRs during the period (1)	$	10,398	$	11,272	$	32,647	$	26,615

(1) There were $13.0 million and $21.5 million of partial charge-offs for the three and nine months endedSeptember 30, 2018, respectively, and zero and $2.6 million of partial charge-offs during the three and nine months endedSeptember 30, 2017, respectively.

During the three and nine months endedSeptember 30, 2018, all new TDRs of $10.4 million and $32.6 million, respectively, were modified through payment deferrals granted to our clients. During the three and nine months endedSeptember 30, 2017, all new TDRs of $11.3 million and $26.6 million, respectively, were modified through payment deferrals granted to our clients.

The related allowance for loan losses for the majority of our TDRs is determined on an individual basis by comparing the carrying value of the loan to the present value of the estimated future cash flows, discounted at the pre-modification contractual interest rate. For certain TDRs, the related allowance for loan losses is determined based on the fair value of the collateral if the loan is collateral dependent.

35

The following table summarizes the recorded investment in loans modified in TDRs within the previous 12 months that subsequently defaulted during the three and nine months endedSeptember 30, 2018 and 2017:

	Three months ended September 30,				Nine months ended September 30,
(Dollars in thousands)	2018		2017		2018		2017
TDRs modified within the previous 12 months that defaulted during the period:
Commercial loans:
Software/internet	$	18,911	$	1,234	$	41,568	$	1,234
Hardware	2,100		—		5,549		—
Life science/healthcare	5,909		—		7,139		—
Premium wine	—		186		—		186
Total TDRs modified within the previous 12 months that defaulted in the period	$	26,920	$	1,420	$	54,256	$	1,420

Charge-offs and defaults on previously restructured loans are evaluated to determine the impact to the allowance for loan losses, if any. The evaluation of these defaults may impact the assumptions used in calculating the reserve on other TDRs and impaired loans as well as management’s overall outlook of macroeconomic factors that affect the reserve on the loan portfolio as a whole. After evaluating the charge-offs and defaults experienced on our TDRs we determined that no change to our reserving methodology for TDRs was necessary to determine the allowance for loan losses as of September 30, 2018.

8. Short-Term Borrowings and Long-Term Debt

The following table represents outstanding short-term borrowings and long-term debt at September 30, 2018 and December 31, 2017:

				Carrying Value
(Dollars in thousands)	Maturity	Principal value at September 30, 2018		September 30, 2018		December 31, 2017
Short-term borrowings:
Short-term FHLB advances	(1)	$	2,250,000	$	2,250,000	$	700,000
Federal funds purchased		—		—		330,000
Securities sold under agreement to repurchase	(2)	371,539		371,539		—
Other short-term borrowings	(3)	9,713		9,713		3,730
Total short-term borrowings				$	2,631,252	$	1,033,730
Long-term debt:
3.50% Senior Notes	January 29, 2025	$	350,000	$	347,554	$	347,303
5.375% Senior Notes	September 15, 2020	350,000		348,663		348,189
Total long-term debt				$	696,217	$	695,492

(1) Represents advances from the FHLB at September 30, 2018 with maturity dates through November 26, 2018.

(2) Securities sold under repurchase agreements are effectively short-term collateralized borrowings. Gross repurchase agreements held at September 30, 2018 have maturity dates through October 17, 2018.

(3) Represents cash collateral received from certain counterparties in relation to market value exposures of derivative contracts in our favor.

Interest expense related to short-term borrowings and long-term debt was $12.0 million and $29.1 million for the three and nine months ended September 30,2018, respectively, and $9.0 million and $27.2 million for the three and nine months endedSeptember 30, 2017, respectively. The weighted average interest rate associated with our short-term borrowings was 2.31 percent as of September 30, 2018 and 1.39 percent as of December 31, 2017.

36

Available Lines of Credit

We have certain facilities in place to enable us to access short-term borrowings on a secured (using loans and fixed income investment securities as collateral) and unsecured basis. These include repurchase agreements and federal funds lines with various financial institutions. As of September 30, 2018, we did not have any borrowings outstanding against our federal funds lines. We also pledge collateral to the FHLB of San Francisco (comprised primarily of loans and fixed income investment securities) and the discount window at the FRB (comprised primarily of fixed income investment securities) of which $2.0 billion and $1.0 billion, respectively, of our borrowing capacity, was unused and available to support additional borrowings at September 30, 2018.

9. Derivative Financial Instruments

We primarily use derivative financial instruments to manage interest rate risk, currency exchange rate risk and to assist customers with their risk management objectives, which may include currency exchange rate risks and interest rate risks. Also, in connection with negotiating credit facilities and certain other services, we often obtain equity warrant assets giving us the right to acquire stock in private, venture-backed companies in the technology and life science/healthcare industries.

Currency Exchange Risk

We enter into foreign exchange forward contracts to economically reduce our foreign exchange exposure risk associated with the net difference between foreign currency denominated assets and liabilities. We do not designate any foreign exchange forward contracts as derivative instruments that qualify for hedge accounting. Gains or losses from changes in currency rates on foreign currency denominated instruments are recorded in the line item “other” as part of noninterest income, a component of consolidated net income. We may experience ineffectiveness in the economic hedging relationship, because the instruments are revalued based upon changes in the currency’s spot rate on the principal value, while the forwards are revalued on a discounted cash flow basis. We record forward agreements in gain positions in other assets and loss positions in other liabilities, while net changes in fair value are recorded in the line item “other” as part of noninterest income, a component of consolidated net income.

Other Derivative Instruments

Also included in our derivative instruments are equity warrant assets and client forward and option contracts, and client interest rate contracts. For further description of these other derivative instruments, refer to Note 2-“Summary of Significant Accounting Policies" under Part II, Item 8 of our 2017 Form 10-K.

Counterparty Credit Risk

We are exposed to credit risk if counterparties to our derivative contracts do not perform as expected. We mitigate counterparty credit risk through credit approvals, limits, monitoring procedures and obtaining collateral, as appropriate. With respect to measuring counterparty credit risk for derivative instruments, we measure the fair value of a group of financial assets and financial liabilities on a net risk basis by counterparty portfolio.

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The total notional or contractual amounts and fair value of our derivative financial instruments at September 30, 2018 and December 31, 2017 were as follows:

	September 30, 2018						December 31, 2017
	Notional or Contractual Amount		Fair Value				Notional or Contractual Amount		Fair Value
(Dollars in thousands)			Derivative Assets (1)		Derivative Liabilities (1)				Derivative Assets (1)		Derivative Liabilities (1)
Derivatives not designated as hedging instruments:
Currency exchange risks:
Foreign exchange forwards	$	241,360	$	2,842	$	—	$	50,889	$	414	$	—
Foreign exchange forwards	397,153		—		4,370		425,055		—		5,201
Other derivative instruments:
Equity warrant assets	223,868		146,967		—		211,253		123,763		—
Client foreign exchange forwards	2,523,524		77,585		—		2,203,643		95,035		—
Client foreign exchange forwards	2,390,294		—		70,317		2,092,207		—		90,253
Client foreign currency options	91,125		1,476		—		102,678		1,187		—
Client foreign currency options	91,149		—		1,478		102,678		—		1,187
Client interest rate derivatives (2)	937,808		6,262		—		726,984		11,753		—
Client interest rate derivatives	1,335,830		—		15,156		782,586		—		11,940
Total Derivatives not designated as hedging instruments			$	235,132	$	91,321			$	232,152	$	108,581

(1) Derivative assets and liabilities are included in "accrued interest receivable and other assets" and "other liabilities", respectively, on our consolidated balance sheets.

(2) The amount reported for September 30, 2018 reflects rule changes implemented by two central clearing houses that allow entities to elect to treat derivative assets, liabilities and the related variation margin as settlement of the related derivative fair values for legal and accounting purposes, as opposed to presenting gross derivative assets and liabilities. As a result, client interest rate derivatives at September 30, 2018, reflect reductions of approximately $8.7 million of derivative assets that previously would have been reported on a gross basis and approximately $302.4 million in related notional amounts for these derivative assets cleared through central clearing houses.

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A summary of our derivative activity and the related impact on our consolidated statements of income for the three and nine months endedSeptember 30, 2018 and 2017 is as follows:

		Three months ended September 30,						Nine months ended September 30,
(Dollars in thousands)	Statement of income location	2018			2017			2018			2017
Derivatives designated as hedging instruments:
Interest rate risks:
Net cash benefit associated with interest rate swaps	Interest expense—borrowings	$	—		$	62		$	—		$	997
Changes in fair value of interest rate swaps	Other noninterest income	—			—			—			(7		)
Net gains associated with interest rate risk derivatives		$	—		$	62		$	—		$	990
Derivatives not designated as hedging instruments:
Currency exchange risks:
Gains on revaluations of internal foreign currency instruments, net	Other noninterest income	$	5,412		$	10,561		$	8,019		$	29,265
(Losses) on internal foreign exchange forward contracts, net	Other noninterest income	(5,002		)	(10,550		)	(8,055		)	(28,349		)
Net gains (losses) associated with internal currency risk		$	410		$	11		$	(36	)	$	916
Other derivative instruments:
(Losses) gains on revaluations of client foreign currency instruments, net	Other noninterest income	$	(1,187	)	$	3,760		$	3,718		$	8,889
Gains (losses) on client foreign exchange forward contracts, net	Other noninterest income	1,573			(3,871		)	(2,697		)	(8,350		)
Net gains (losses) associated with client currency risk		$	386		$	(111	)	$	1,021		$	539
Net gains on equity warrant assets	Gains on equity warrant assets, net	$	34,141		$	24,922		$	72,393		$	42,432
Net gains (losses) on other derivatives	Other noninterest income	$	222		$	(38	)	$	643		$	(524	)

Balance Sheet Offsetting

Certain of our derivative and other financial instruments are subject to enforceable master netting arrangements with our counterparties. These agreements provide for the net settlement of multiple contracts with a single counterparty through a single payment, in a single currency, in the event of default on or termination of any one contract.

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The following table summarizes our assets subject to enforceable master netting arrangements as of September 30, 2018 and December 31, 2017:

	Gross Amounts of Recognized Assets		Gross Amounts offset in the Statement of Financial Position		Net Amounts of Assets Presented in the Statement of Financial Position		Gross Amounts Not Offset in the Statement of Financial Position But Subject to Master Netting Arrangements						Net Amount
(Dollars in thousands)							Financial Instruments			Cash Collateral Received (1)
September 30, 2018
Derivative Assets:
Foreign exchange forwards	$	80,427	$	—	$	80,427	$	(29,400	)	$	(6,816	)	$	44,211
Foreign currency options	1,476		—		1,476		(811		)	—			665
Client interest rate derivatives	6,262		—		6,262		(3,365		)	(2,897		)	—
Total derivative assets	88,165		—		88,165		(33,576		)	(9,713		)	44,876
Reverse repurchase, securities borrowing, and similar arrangements	119,181		—		119,181		(119,181		)	—			—
Total	$	207,346	$	—	$	207,346	$	(152,757	)	$	(9,713	)	$	44,876
December 31, 2017
Derivative Assets:
Foreign exchange forwards (2)	$	95,449	$	—	$	95,449	$	(14,570	)	$	(3,616	)	$	77,263
Foreign currency options	1,187		—		1,187		(557		)	—			630
Client interest rate derivatives (2)	11,753		—		11,753		(11,627		)	(114		)	12
Total derivative assets	108,389		—		108,389		(26,754		)	(3,730		)	77,905
Reverse repurchase, securities borrowing, and similar arrangements	247,876		—		247,876		(247,876		)	—			—
Total	$	356,265	$	—	$	356,265	$	(274,630	)	$	(3,730	)	$	77,905

(1) Cash collateral received from our counterparties in relation to market value exposures of derivative contracts in our favor is recorded as a component of “short-term borrowings” on our consolidated balance sheets.

(2) For the period ending December 31, 2017, previously reported amounts for our foreign exchange forwards and client interest rate derivatives were reclassified between "Financial Instruments" and "Cash Collateral Received" to properly reflect cash collateral received for these derivative assets subject to master netting arrangements, respectively. The correction of this immaterial error had no impact on the "Net Amount" of derivative assets subject to enforceable master netting arrangements.

The following table summarizes our liabilities subject to enforceable master netting arrangements as of September 30, 2018 and December 31, 2017:

	Gross Amounts of Recognized Liabilities		Gross Amounts offset in the Statement of Financial Position		Net Amounts of Liabilities Presented in the Statement of Financial Position		Gross Amounts Not Offset in the Statement of Financial Position But Subject to Master Netting Arrangements						Net Amount
(Dollars in thousands)							Financial Instruments			Cash Collateral Pledged (1)
September 30, 2018
Derivative Liabilities:
Foreign exchange forwards	$	74,687	$	—	$	74,687	$	(22,038	)	$	(20,036	)	$	32,613
Foreign currency options	1,478		—		1,478		(666		)	—			812
Client interest rate derivatives	15,156		—		15,156		(4,882		)	(10,180		)	94
Total derivative liabilities	91,321		—		91,321		(27,586		)	(30,216		)	33,519
Repurchase, securities lending, and similar arrangements	371,539		—		371,539		(147,757		)	(750		)	223,032
Total	$	462,860	$	—	$	462,860	$	(175,343	)	$	(30,966	)	$	256,551
December 31, 2017
Derivative Liabilities:
Foreign exchange forwards (2)	$	95,454	$	—	$	95,454	$	(10,997	)	$	(69,110	)	$	15,347
Foreign currency options (2)	1,187		—		1,187		(501		)	(130		)	556
Client interest rate derivatives (2)	11,940		—		11,940		—			(11,924		)	16
Total derivative liabilities (2)	108,581		—		108,581		(11,498		)	(81,164		)	15,919
Repurchase, securities lending, and similar arrangements	—		—		—		—			—			—
Total (2)	$	108,581	$	—	$	108,581	$	(11,498	)	$	(81,164	)	$	15,919

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(1) Cash collateral pledged to our counterparties in relation to market value exposures of derivative contracts in a liability position and repurchase agreements are recorded as a component of “cash and cash equivalents" on our consolidated balance sheets.

(2) For the period ending December 31, 2017, previously reported amounts included in "Financial Instruments" were reclassified to "Cash Collateral Pledged" to properly reflect cash collateral pledged for these derivative liabilities subject to master netting arrangements. The correction of this immaterial error had no impact on the "Net Amount" of derivative liabilities subject to enforceable master netting arrangements.

10. Noninterest Income

On January 1, 2018, we adopted Topic 606 using the modified retrospective method applied to those contracts which were not completed as of January 1, 2018. Results for reporting periods beginning after January 1, 2018, are presented under Topic 606, while prior period amounts are not adjusted and continue to be reported in accordance with our previous accounting methodology under Topic 605. A summary of noninterest income for the three and nine months endedSeptember 30, 2018 and 2017 is as follows:

	Three months ended September 30,				Nine months ended September 30,
(Dollars in thousands)	2018		2017		2018		2017
Noninterest income:
Gains on investment securities, net	$	32,193	$	15,238	$	77,365	$	48,838
Gains on equity warrant assets, net	34,141		24,922		72,393		42,432
Foreign exchange fees	32,656		29,671		100,560		82,026
Credit card fees	24,121		20,270		68,739		56,099
Deposit service charges	19,588		14,508		56,081		43,046
Client investment fees	36,265		15,563		88,592		37,571
Lending related fees	10,675		15,404		30,938		32,874
Letters of credit and standby letters of credit fees	8,409		7,306		24,938		20,951
Other	12,022		15,896		38,671		41,128
Total noninterest income	$	210,070	$	158,778	$	558,277	$	404,965

Gains on investment securities, net

Net gains on investment securities include both gains and losses from our non-marketable and other equity securities, which include public equity securities held as a result of exercised equity warrant assets, gains and losses from sales of our AFS debt securities portfolio, when applicable, and carried interest.

Our non-marketable and other equity securities portfolio primarily represents investments in venture capital and private equity funds, our China Joint Venture, debt funds, private and public portfolio companies and investments in qualified affordable housing projects. We experience variability in the performance of our non-marketable and other equity securities from period to period, which results in net gains or losses on investment securities (both realized and unrealized). This variability is due to a number of factors, including unrealized changes in the values of our investments, changes in the amount of realized gains from distributions, changes in liquidity events and general economic and market conditions. Unrealized gains from non-marketable and other equity securities for any single period are typically driven by valuation changes, and are therefore subject to potential increases or decreases in future periods. Such variability may lead to volatility in the gains or losses from investment securities. As such, our results for a particular period are not necessarily indicative of our expected performance in a future period.

The extent to which any unrealized gains or losses will become realized is subject to a variety of factors, including, among other things, the expiration of certain sales restrictions to which these equity securities may be subject to (i.e., lock-up agreements), changes in prevailing market prices, market conditions, the actual sales or distributions of securities, and the timing of such actual sales or distributions, which, to the extent such securities are managed by our managed funds, are subject to our funds' separate discretionary sales/distributions and governance processes.

Carried interest is comprised of preferential allocations of profits recognizable when the return on assets of our individual managed fund of funds and direct venture funds exceeds certain performance targets and is payable to us, as the general partners of the managed funds. The carried interest we earn is often shared with employees, who are also members of the general partner entities. We record carried interest on a quarterly basis by measuring fund performance to date versus the performance target.  For our unconsolidated managed funds, carried interest is recorded as gains on investment securities, net. For our consolidated managed funds, it is recorded as a component of net income attributable to noncontrolling interests.  Carried interest allocated to others is recorded as a component of net income attributable to noncontrolling interests. Any carried interest paid to us (or

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our employees) may be subject to reversal to the extent fund performance declines to a level where inception to date carried interest is lower than actual payments made by the funds. The limited partnership agreements for our funds provide that carried interest is generally not paid to the general partners until the funds have provided a full return of contributed capital to the limited partners. Accrued, but unpaid carried interest may be subject to reversal to the extent that the fund performance declines to a level where inception-to-date carried interest is less than prior amounts recognized. Carried interest income is accounted for under an ownership model based on ASC 323 — Equity Method of Accounting and ASC 810 — Consolidation.

Our available-for-sale securities portfolio is a fixed income investment portfolio that is managed with the objective of earning an appropriate portfolio yield over the long-term while maintaining sufficient liquidity and credit diversification as well as addressing our asset/liability management objectives. Though infrequent, sales of debt securities in our AFS securities portfolio may result in net gains or losses and are conducted pursuant to the guidelines of our investment policy related to the management of our liquidity position and interest rate risk.

Gains on investment securities are outside of the scope of the new revenue standard as it explicitly excludes noninterest income earned from our investment-related activities. A summary of gains and losses on investment securities for the three and nine months endedSeptember 30, 2018 and 2017 is as follows:

	Three months ended September 30,					Nine months ended September 30,
(Dollars in thousands)	2018		2017			2018		2017
Gains on non-marketable and other equity securities, net	$	32,193	$	15,339		$	77,365	$	48,454
(Losses) gains on sales of available-for-sale securities, net	—		(101		)	—		384
Total gains on investment securities, net	$	32,193	$	15,238		$	77,365	$	48,838

Gains on equity warrant assets, net

In connection with negotiating credit facilities and certain other services, we often obtain rights to acquire stock in the form of equity warrant assets in primarily private, venture-backed companies in the technology and life science/healthcare industries. Any changes in fair value from the grant date fair value of equity warrant assets will be recognized as increases or decreases to other assets on our balance sheet and as net gains or losses on equity warrant assets, in noninterest income, a component of consolidated net income. Gains on equity warrant assets are recognized outside of the scope of the new revenue standard as it explicitly excludes noninterest income earned from our derivative-related activities. A summary of net gains on equity warrant assets for the three and nine months endedSeptember 30, 2018 and 2017 is as follows:

	Three months ended September 30,						Nine months ended September 30,
(Dollars in thousands)	2018			2017			2018			2017
Equity warrant assets:
Gains on exercises, net	$	18,287		$	7,449		$	42,808		$	22,482
Cancellations and expirations	(1,432		)	(757		)	(3,158		)	(3,614		)
Changes in fair value, net	17,286			18,230			32,743			23,564
Total net gains on equity warrant assets	$	34,141		$	24,922		$	72,393		$	42,432

Foreign exchange fees

Foreign exchange fees represent the income differential between purchases and sales of foreign currency on behalf of our clients, primarily from spot contracts. Foreign exchange spot contract fees are recognized upon the completion of the single performance obligation, the execution of a spot trade in exchange for a fee. In line with customary business practice, the legal right transfers to the client upon execution of a foreign exchange contract on the trade date, and as such, we currently recognize our fees based on the trade date and are typically settled within two business days.

Forward contract and option premium fees are recognized outside of the scope of the new revenue standard as it explicitly excludes noninterest income earned from our derivative-related activities. A summary of foreign exchange fee income by instrument type for the three and nine months endedSeptember 30, 2018 and 2017 is as follows:

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	Three months ended September 30,				Nine months ended September 30,
(Dollars in thousands)	2018		2017		2018		2017
Foreign exchange fees by instrument type:
Spot contract commissions	$	30,041	$	27,700	$	92,791	$	73,707
Forward contract commissions	2,534		1,877		7,474		7,948
Option premium fees	81		94		295		371
Total foreign exchange fees	$	32,656	$	29,671	$	100,560	$	82,026

Credit card fees

Credit card fees include interchange income from credit and debit cards and fees earned from processing transactions for merchants. Interchange income is earned after satisfying our performance obligation of providing nightly settlement services to a payment network. Costs related to rewards programs are recorded when the rewards are earned by the customer and presented as a reduction to interchange fee income. Rewards programs continue to be accounted for under ASC 310 - Receivables. Our performance obligations for merchant service fees are to transmit data and funds between the merchant and the payment network. Credit card interchange and merchant service fees are earned daily upon completion of transaction settlement services.

Annual card service fees are recognized on a straight-line basis over a 12-month period and continue to be accounted for under ASC 310 - Receivables.

A summary of credit card fees by instrument type for the three and nine months endedSeptember 30, 2018 and 2017 is as follows:

	Three months ended September 30,				Nine months ended September 30,
(Dollars in thousands)	2018		2017		2018		2017
Credit card fees by instrument type:
Card interchange fees, net	$	18,849	$	16,179	$	54,547	$	44,182
Merchant service fees	3,679		2,930		10,010		8,553
Card service fees	1,593		1,161		4,182		3,364
Total credit card fees	$	24,121	$	20,270	$	68,739	$	56,099

Deposit service charges

Deposit service charges include fees earned from performing cash management activities and other deposit account services. Deposit services include, but are not limited to, the following: receivables services, which include merchant services, remote capture, lockbox, electronic deposit capture, and fraud control services. Payment and cash management products and services include wire transfer and automated clearing house payment services to enable clients to transfer funds more quickly, as well as business bill pay, business credit and debit cards, account analysis, and disbursement services. Deposit service charges are recognized over the period in which the related performance obligation is provided, generally on a monthly basis.

Client investment fees

Client investment fees include fees earned from discretionary investment management services for substantially all clients, managing clients’ portfolios based on their investment policies, strategies and objectives and investment advisory fees. Revenue is recognized on a monthly basis upon completion of our performance obligation and consideration is typically received in the subsequent month. Included in our sweep money market fees are Rule 12(b)-1 fees, revenue sharing and customer transactional-based fees. Rule 12(b)-1 fees and revenue sharing are recognized as earned based on client funds that are invested in the period, typically monthly. Transactional based fees are earned and recognized on fixed income securities when the transaction is executed on the clients' behalf. Amounts paid to third-party service providers are predominantly expensed, such that client investment fees are recorded gross of payments made to third parties. A summary of client investment fees by instrument type for the three and nine months endedSeptember 30, 2018 and 2017, is as follows:

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	Three months ended September 30,				Nine months ended September 30,
(Dollars in thousands)	2018		2017		2018		2017
Client investment fees by type:
Sweep money market fees	$	21,105	$	7,968	$	50,605	$	18,838
Asset management fees (1)	6,358		4,177		17,447		11,666
Repurchase agreement fees	8,802		3,418		20,540		7,067
Total client investment fees (2)	$	36,265	$	15,563	$	88,592	$	37,571

(1) Represents fees earned from investments in third-party money market mutual funds and fixed-income securities managed by SVB Asset Management.

(2) Represents fees earned on client investment funds which are maintained at third-party financial institutions and are not recorded on our balance sheet.

Lending related fees

Unused commitment fees, minimum finance fees and unused line fees are recognized as earned on a monthly basis. Fees that qualify for syndication treatment are recognized at the completion of the syndicated loan deal for which the fees were received. Lending related fees are recognized outside of the scope of the new revenue standard as it explicitly excludes noninterest income earned from our lending-related activities. A summary of lending related fees by instrument type for the three and nine months endedSeptember 30, 2018 and 2017 is as follows:

	Three months ended September 30,				Nine months ended September 30,
(Dollars in thousands)	2018		2017		2018		2017
Lending related fees by instrument type:
Unused commitment fees	$	8,410	$	12,334	$	24,994	$	25,923
Other	2,265		3,070		5,944		6,951
Total lending related fees	$	10,675	$	15,404	$	30,938	$	32,874

Letters of credit and standby letters of credit fees

Commercial and standby letters of credit represent conditional commitments issued by us on behalf of a client to guarantee the performance of the client to a third party when certain specified future events have occurred. Fees generated from letters of credit and standby letters of credit are deferred as a component of other liabilities and recognized in noninterest income over the commitment period using the straight-line method, based on the likelihood that the commitment being drawn down will be remote. Letters of credit and standby letters of credit fees are recognized outside of the scope of the new revenue standard as it explicitly excludes noninterest income earned from our lending related activities.

Other

Other noninterest income primarily includes income from fund management fees and service revenue. Fund management fees are comprised of fees charged directly to our managed funds of funds and direct venture funds. Fund management fees are based upon the contractual terms of the limited partnership agreements and are generally recognized as earned over the specified contract period, which is generally equal to the life of the individual fund. Fund management fees are calculated as a percentage of committed capital and collected in advance and are received quarterly. Fund management fees for certain of our limited partnership agreements are calculated as a percentage of distributions made by the funds and revenue is recorded only at the time of a distribution event. As distribution events are not predetermined for these certain funds, management fees are considered variable and constrained under the new revenue standard.

Other service revenue primarily consists of dividend income on FHLB/FRB stock, correspondent bank rebate income, incentive fees related to carried interest and other fee income. We recognize revenue when our performance obligations are met and record revenues on a daily/monthly basis, quarterly, semi-annually or annual basis. For event driven revenue sources, we recognize revenue when: (i) persuasive evidence of an arrangement exists, (ii) we have performed the service, provided we have no other remaining obligations to the customer, (iii) the fee is fixed or determinable and (iv) collectability is probable.

A summary of other noninterest income by instrument type for the three and nine months endedSeptember 30, 2018 and 2017 is as follows:

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	Three months ended September 30,					Nine months ended September 30,
(Dollars in thousands)	2018		2017			2018		2017
Other noninterest income by instrument type:
Fund management fees	$	5,479	$	5,198		$	17,144	$	15,903
Net gains (losses) on revaluation of foreign currency instruments, net of foreign exchange forward contracts(1)	796		(100		)	985		1,455
Other service revenue	5,747		10,798			20,542		23,770
Total other noninterest income	$	12,022	$	15,896		$	38,671	$	41,128

(1) Represents the net revaluation of client and internal foreign currency denominated financial instruments. We enter into foreign exchange forward contracts to economically reduce our foreign exchange exposure related to client and internal foreign currency denominated financial instruments.

Disaggregation of Revenue from Contracts with Customers

The following tables present our revenues from contracts with customers disaggregated by revenue source and segment for the three and nine months endedSeptember 30, 2018:

Three months ended September 30, 2018 (Dollars in thousands)	Global Commercial Bank		SVB Private   Bank			SVB Capital		Other Income		Total
Revenue from contracts with customers:
Spot contract commissions	$	29,776	$	184		$	—	$	81	$	30,041
Card interchange fees, gross	33,905		—			—		108		34,013
Merchant service fees	3,677		2			—		—		3,679
Deposit service charges	19,207		24			—		357		19,588
Client investment fees	14,740		420			—		21,105		36,265
Fund management fees	—		—			5,479		—		5,479
Correspondent bank rebates	1,372		—			—		—		1,372
Total revenue from contracts with customers	$	102,677	$	630		$	5,479	$	21,651	$	130,437
Revenues outside the scope of ASC 606 (1)	11,446		(25		)	18,944		49,268		79,633
Total noninterest income	$	114,123	$	605		$	24,423	$	70,919	$	210,070

(1) Amounts are accounted for under separate guidance than ASC 606.

Nine months ended September 30, 2018 (Dollars in thousands)	Global Commercial Bank		SVB Private   Bank			SVB Capital		Other Income		Total
Revenue from contracts with customers:
Spot contract commissions	$	92,098	$	507		$	—	$	186	$	92,791
Card interchange fees, gross	95,088		—			—		311		95,399
Merchant service fees	10,008		2			—		—		10,010
Deposit service charges	54,633		83			—		1,365		56,081
Client investment fees	36,885		1,101			—		50,606		88,592
Fund management fees	—		—			17,144		—		17,144
Correspondent bank rebates	4,241		—			—		—		4,241
Total revenue from contracts with customers	$	292,953	$	1,693		$	17,144	$	52,468	$	364,258
Revenues outside the scope of ASC 606 (1)	33,761		(16		)	64,688		95,586		194,019
Total noninterest income	$	326,714	$	1,677		$	81,832	$	148,054	$	558,277

(1) Amounts are accounted for under separate guidance than ASC 606.

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11. Other Noninterest Expense

A summary of other noninterest expense for the three and nine months endedSeptember 30, 2018 and 2017 is as follows:

	Three months ended September 30,				Nine months ended September 30,
(Dollars in thousands)	2018		2017		2018		2017
Lending and other client related processing costs	$	5,698	$	6,935	$	16,301	$	18,806
Data processing services	2,740		2,244		7,934		7,254
Telephone	2,269		2,518		7,025		7,892
Dues and publications	1,387		883		3,081		2,355
Postage and supplies	652		612		2,133		2,013
Other	5,393		4,872		15,171		16,350
Total other noninterest expense	$	18,139	$	18,064	$	51,645	$	54,670

12. Segment Reporting

We have three reportable segments for management reporting purposes: Global Commercial Bank, SVB Private Bank and SVB Capital. The results of our operating segments are based on our internal management reporting process.

Our Global Commercial Bank and SVB Private Bank segments' primary source of revenue is from net interest income, which is primarily the difference between interest earned on loans, net of funds transfer pricing (“FTP”), and interest paid on deposits, net of FTP. Accordingly, these segments are reported using net interest income, net of FTP. FTP is an internal measurement framework designed to assess the financial impact of a financial institution’s sources and uses of funds. It is the mechanism by which a funding credit is given for deposits raised, and a funding charge is made for loans funded. FTP is calculated at an instrument level based on account characteristics.

We also evaluate performance based on provision for credit losses, noninterest income and noninterest expense, which are presented as components of segment operating profit or loss. In calculating each operating segment’s noninterest expense, we consider the direct costs incurred by the operating segment as well as certain allocated direct costs. As part of this review, we allocate certain corporate overhead costs to a corporate account. We do not allocate income tax expense or the provision for unfunded credit commitments (included in provision for credit losses) to our segments. Additionally, our management reporting model is predicated on average asset balances; therefore, period-end asset balances are not presented for segment reporting purposes. Changes in an individual client’s primary relationship designation have resulted, and in the future may result, in the inclusion of certain clients in different segments in different periods.

Unlike financial reporting, which benefits from the comprehensive structure provided by GAAP, our internal management reporting process is highly subjective, as there is no comprehensive, authoritative guidance for management reporting. Our management reporting process measures the performance of our operating segments based on our internal operating structure, which is subject to change from time to time, and is not necessarily comparable with similar information for other financial services companies.

For reporting purposes, SVB Financial Group has three operating segments for which we report our financial information:

• Global Commercial Bank is comprised of results from the following:

◦ Our Commercial Bank products and services are provided by the Bank and its subsidiaries to commercial clients in the technology, life science/healthcare and private equity/venture capital industries. The Bank provides solutions to the financial needs of commercial clients, through credit, global treasury management, foreign exchange, global trade finance, and other services. It serves clients within the United States, as well as non-U.S. clients in key international innovation markets. In addition, the Bank and its subsidiaries offer a variety of investment services and solutions to its clients that enable them to effectively manage their assets. 

◦ Our Private Equity Division provides banking products and services primarily to our private equity and venture capital clients.

◦ Our Wine practice provides banking products and services to our premium wine industry clients, including vineyard development loans. 

◦ SVB Analytics previously provided equity valuation services and currently provides research for investors and companies in the global innovation economy. In September 2017, SVB Analytics sold its equity valuation services business.

◦ Debt Fund Investments comprised of our investments in certain debt funds in which we are a strategic investor.

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• SVB Private Bank is the private banking division of the Bank, which provides a range of personal financial solutions for consumers. Our clients are primarily private equity/venture capital professionals and executive leaders of the innovation companies they support. We offer a customized suite of private banking services, including mortgages, home equity lines of credit, restricted stock purchase loans, capital call lines of credit and other secured and unsecured lending, as well as cash and wealth management services. 

• SVB Capital is the funds management business of SVBFG, which focuses primarily on venture capital investments. SVB Capital manages funds (primarily venture capital funds) on behalf of third-party limited partners and, on a more limited basis, SVB Financial Group. The SVB Capital family of funds is comprised of direct venture funds that invest in companies and funds of funds that invest in other venture capital funds. SVB Capital generates income for the Company primarily from investment returns (including carried interest allocations) and management fees.

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The summary financial results of our operating segments are presented along with a reconciliation to our consolidated interim results.

Our segment information for the three and nine months endedSeptember 30, 2018 and 2017 is as follows:

(Dollars in thousands)	Global Commercial Bank (1)			SVB Private   Bank			SVB Capital (1)			Other Items (2)			Total
Three months ended September 30, 2018
Net interest income	$	431,036		$	14,919		$	6		$	47,261		$	493,222
(Provision for) reduction of credit losses	(19,074		)	(362		)	—			2,262			(17,174		)
Noninterest income	114,123			605			24,423			70,919			210,070
Noninterest expense (3)	(206,487		)	(6,760		)	(6,469		)	(89,729		)	(309,445		)
Income before income tax expense (4)	$	319,598		$	8,402		$	17,960		$	30,713		$	376,673
Total average loans, net of unearned income	$	22,925,909		$	2,928,576		$	—		$	476,892		$	26,331,377
Total average assets (5)	54,296,808			2,538,662			388,531			(758,964		)	56,465,037
Total average deposits	47,037,693			1,505,746			—			548,801			49,092,240
Three months ended September 30, 2017
Net interest income	$	337,860		$	14,600		$	15		$	21,499		$	373,974
Provision for credit losses	(20,874		)	(1,535		)	—			(1,113		)	(23,522		)
Noninterest income	97,227			460			13,913			47,178			158,778
Noninterest expense (3)	(178,306		)	(4,706		)	(4,873		)	(69,876		)	(257,761		)
Income (loss) before income tax expense (4)	$	235,907		$	8,819		$	9,055		$	(2,312	)	$	251,469
Total average loans, net of unearned income	$	18,807,616		$	2,499,507		$	—		$	277,769		$	21,584,892
Total average assets (5)	47,809,890			2,538,400			323,417			(876,341		)	49,795,366
Total average deposits	42,376,024			1,231,390			—			435,428			44,042,842
Nine months ended September 30, 2018
Net interest income	$	1,209,960		$	46,811		$	22		$	122,735		$	1,379,528
Provision for credit losses	(71,704		)	(2,384		)	—			(138		)	(74,226		)
Noninterest income	326,714			1,677			81,832			148,054			558,277
Noninterest expense (3)	(591,434		)	(18,729		)	(17,182		)	(253,256		)	(880,601		)
Income before income tax expense (4)	$	873,536		$	27,375		$	64,672		$	17,395		$	982,978
Total average loans, net of unearned income	$	21,781,557		$	2,791,910		$	—		$	434,810		$	25,008,277
Total average assets (5)	52,277,701			2,548,184			379,809			(773,042		)	54,432,652
Total average deposits	45,701,317			1,519,200			—			513,845			47,734,362
Nine months ended September 30, 2017
Net interest income	$	924,789		$	42,952		$	41		$	58,881		$	1,026,663
Provision for credit losses	(65,007		)	(2,266		)	—			(2,789		)	(70,062		)
Noninterest income	260,650			1,715			45,707			96,893			404,965
Noninterest expense (3)	(528,807		)	(12,675		)	(14,537		)	(190,621		)	(746,640		)
Income (loss) before income tax expense (4)	$	591,625		$	29,726		$	31,211		$	(37,636	)	$	614,926
Total average loans, net of unearned income	$	18,125,020		$	2,371,027		$	—		$	230,420		$	20,726,467
Total average assets (5)	45,408,476			2,403,777			333,439			(580,641		)	47,565,051
Total average deposits	40,398,413			1,289,990			—			373,232			42,061,635

(1) Global Commercial Bank’s and SVB Capital’s components of net interest income, noninterest income, noninterest expense and total average assets are shown net of noncontrolling interests for all periods presented. Noncontrolling interest is included within “Other Items."

(2) The “Other Items” column reflects the adjustments necessary to reconcile the results of the operating segments to the consolidated financial statements prepared in conformity with GAAP. Net interest income consists primarily of interest earned from our fixed income investment portfolio, net of FTP. Noninterest income consists primarily of gains on equity warrant assets and gains or losses on the sale of fixed income investments and equity securities from exercised warrant

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assets. Noninterest expense consists primarily of expenses associated with corporate support functions such as finance, human resources, marketing, legal and other expenses.

(3) The Global Commercial Bank segment includes direct depreciation and amortization of $5.5 million and $6.1 million for the three months ended September 30, 2018 and 2017, respectively, and $16.6 million and $19.4 million for the nine months endedSeptember 30, 2018 and 2017, respectively.

(4) The internal reporting model used by management to assess segment performance does not calculate income tax expense by segment. Our effective tax rate is a reasonable approximation of the segment rates.

(5) Total average assets equal the greater of total average assets or the sum of total average liabilities and total average stockholders’ equity for each segment to reconcile the results to the consolidated financial statements prepared in conformity with GAAP.

13. Off-Balance Sheet Arrangements, Guarantees and Other Commitments

In the normal course of business, we use financial instruments with off-balance sheet risk to meet the financing needs of our customers. These financial instruments include commitments to extend credit, commercial and standby letters of credit and commitments to invest in venture capital and private equity fund investments. These instruments involve, to varying degrees, elements of credit risk. Credit risk is defined as the possibility of sustaining a loss because other parties to the financial instrument fail to perform in accordance with the terms of the contract.

Commitments to Extend Credit

The following table summarizes information related to our commitments to extend credit at September 30, 2018 and December 31, 2017:

(Dollars in thousands)	September 30, 2018		December 31, 2017
Loan commitments available for funding: (1)
Fixed interest rate commitments	$	1,768,904	$	1,478,157
Variable interest rate commitments	14,698,357		14,034,169
Total loan commitments available for funding	16,467,261		15,512,326
Commercial and standby letters of credit (2)	2,072,253		1,950,211
Total unfunded credit commitments	$	18,539,514	$	17,462,537
Commitments unavailable for funding (3)	$	2,458,846	$	2,117,057
Allowance for unfunded credit commitments (4)	51,808		51,770

(1) Represents commitments which are available for funding, due to clients meeting all collateral, compliance and financial covenants required under loan commitment agreements.

(2) See below for additional information on our commercial and standby letters of credit.

(3) Represents commitments which are currently unavailable for funding, due to clients failing to meet all collateral, compliance and financial covenants under loan commitment agreements.

(4) Our allowance for unfunded credit commitments includes an allowance for both our unfunded loan commitments and our letters of credit.

Commercial and Standby Letters of Credit

The table below summarizes our commercial and standby letters of credit at September 30, 2018. The maximum potential amount of future payments represents the amount that could be remitted under letters of credit if there were a total default by the guaranteed parties, without consideration of possible recoveries under recourse provisions or from the collateral held or pledged.

(Dollars in thousands)	Expires In One Year or Less		Expires After One Year		Total Amount Outstanding		Maximum Amount of Future Payments
Financial standby letters of credit	$	1,906,562	$	41,565	$	1,948,127	$	1,948,127
Performance standby letters of credit	84,402		15,666		100,068		100,068
Commercial letters of credit	23,707		351		24,058		24,058
Total	$	2,014,671	$	57,582	$	2,072,253	$	2,072,253

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Deferred fees related to financial and performance standby letters of credit were $11.9 million at September 30, 2018 and $12.4 million at December 31, 2017. At September 30, 2018, collateral in the form of cash of $1.1 billion was available to us to reimburse losses, if any, under financial and performance standby letters of credit.

Commitments to Invest in Venture Capital and Private Equity Funds

Subject to applicable regulatory requirements, including the Volcker Rule, we make commitments to invest in venture capital and private equity funds, which generally makes investments in privately-held companies. Commitments to invest in these funds are generally made for a 10-year period from the inception of the fund. Although the limited partnership agreements governing these investments typically do not restrict the general partners from calling 100% of committed capital in one year, it is customary for these funds to call most of the capital commitments over 5 to 7 years, and in certain cases, the funds may not call 100% of committed capital. The actual timing of future cash requirements to fund these commitments is generally dependent upon the investment cycle, overall market conditions, and the nature and type of industry in which the privately held companies operate. The following table details our total capital commitments, unfunded capital commitments, and our ownership percentage in each fund at September 30, 2018:

(Dollars in thousands)	SVBFG Capital Commitments		SVBFG Unfunded     Commitments		SVBFG Ownership   of each Fund (3)
CP I, LP	$	6,000	$	270	10.7	%
CP II, LP (1)	1,200		162		5.1
Shanghai Yangpu Venture Capital Fund (LP)	844		—		6.8
Strategic Investors Fund, LP	15,300		688		12.6
Strategic Investors Fund II, LP	15,000		1,050		8.6
Strategic Investors Fund III, LP	15,000		1,275		5.9
Strategic Investors Fund IV, LP	12,239		2,325		5.0
Strategic Investors Fund V funds	515		131		Various
Capital Preferred Return Fund, LP	12,688		—		20.0
Growth Partners, LP	24,670		1,340		33.0
Debt funds (equity method accounting)	48,443		—		Various
Other fund investments (2)	298,168		8,366		Various
Total	$	450,067	$	15,607

(1) Our ownership includes direct ownership of 1.3 percent and indirect ownership interest of 3.8 percent through our investment in Strategic Investors Fund II, LP.

(2) Represents commitments to 223 funds (primarily venture capital funds) where our ownership interest is generally less than five percent of the voting interests of each such fund.

(3) We are subject to the Volcker Rule, which restricts or limits us from sponsoring or having ownership interests in “covered” funds including venture capital and private equity funds. See “Business - Supervision and Regulation” under Part 1, Item 1 of our 2017 Form 10-K.

The following table details the amounts of remaining unfunded commitments to venture capital and private equity funds by our consolidated managed funds of funds (including our interest and the noncontrolling interests) at September 30, 2018:

(Dollars in thousands)	Unfunded Commitments
Strategic Investors Fund, LP	$	1,338
Capital Preferred Return Fund, LP	2,658
Growth Partners, LP	1,779
Total	$	5,775

14. Income Taxes

We are subject to income tax in the U.S. federal jurisdiction and various state and foreign jurisdictions and have identified our federal tax and California tax returns as major tax filings. Our U.S. federal tax returns for 2015 and subsequent tax years remain open to full examination. Our California tax returns for 2013 and subsequent tax years remain open to full examination.

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At September 30, 2018, our unrecognized tax benefit was $13.2 million, the recognition of which would reduce our income tax expense by $10.2 million. We do not expect that our unrecognized tax benefit will materially change in the next 12 months.

We recognize interest and penalties related to income tax matters as part of income before income taxes. Interest and penalties were not material for the three or nine months ended September 30, 2018.

15. Fair Value of Financial Instruments

Fair Value Measurements

Our available-for-sale securities, derivative instruments and certain non-marketable and other equity securities are financial instruments recorded at fair value on a recurring basis. We make estimates regarding valuation of assets and liabilities measured at fair value in preparing our interim consolidated financial statements.

Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability (the “exit price”) in an orderly transaction between market participants at the measurement date. There is a three-level hierarchy for disclosure of assets and liabilities recorded at fair value. The classification of assets and liabilities within the hierarchy is based on whether the inputs to the valuation methodology used for measurement are observable or unobservable and on the significance of those inputs in the fair value measurement. Observable inputs reflect market-derived or market-based information obtained from independent sources, while unobservable inputs reflect our estimates about market data and views of market participants. The three levels for measuring fair value are based on the reliability of inputs and are as follows:

Level 1

Fair value measurements based on quoted prices in active markets for identical assets or liabilities that we have the ability to access. Since valuations are based on quoted prices that are readily and regularly available in an active market, valuation of these instruments does not entail a significant degree of judgment. Assets utilizing Level 1 inputs include U.S. Treasury securities, exchange-traded equity securities and certain marketable securities accounted for under fair value accounting.

Level 2

Fair value measurements based on quoted prices in markets that are not active or for which all significant inputs are observable, directly or indirectly. Valuations for the available-for-sale securities are provided by independent pricing service providers who have experience in valuing these securities and by comparison to and/or average of quoted market prices obtained from independent brokers. We perform a monthly analysis on the values received from third parties to ensure that the prices represent a reasonable estimate of the fair value. The procedures include, but are not limited to, initial and ongoing review of third-party pricing methodologies, review of pricing trends and monitoring of trading volumes. Additional corroboration, such as obtaining a non-binding price from a broker, may be obtained depending on the frequency of trades of the security and the level of liquidity or depth of the market. We ensure prices received from independent brokers represent a reasonable estimate of the fair value through the use of observable market inputs including comparable trades, yield curve, spreads and, when available, market indices. As a result of this analysis, if the Company determines that there is a more appropriate fair value based upon the available market data, the price received from the third party is adjusted accordingly. Below is a summary of the significant inputs used for each class of Level 2 assets and liabilities:

U.S. agency debentures: Fair value measurements of U.S. agency debentures are based on the characteristics specific to bonds held, such as issuer name, coupon rate, maturity date and any applicable issuer call option features. Valuations are based on market spreads relative to similar term benchmark market interest rates, generally U.S. Treasury securities.

Agency-issued mortgage-backed securities: Agency-issued mortgage-backed securities are pools of individual conventional mortgage loans underwritten to U.S. agency standards with similar coupon rates, tenor, and other attributes such as geographic location, loan size and origination vintage. Fair value measurements of these securities are based on observable price adjustments relative to benchmark market interest rates taking into consideration estimated loan prepayment speeds.

Agency-issued collateralized mortgage obligations: Agency-issued collateralized mortgage obligations are structured into classes or tranches with defined cash flow characteristics and are collateralized by U.S. agency-issued mortgage pass-through securities. Fair value measurements of these securities incorporate similar characteristics of mortgage pass-through securities such as coupon rate, tenor, geographic location, loan size and origination vintage, in addition to incorporating the effect of estimated prepayment speeds on the cash flow structure of the class or tranche. These measurements incorporate observable market spreads over an estimated average life after considering the inputs listed above.

Agency-issued commercial mortgage-backed securities: Fair value measurements of these securities are based on spreads to benchmark market interest rates (usually U.S. Treasury rates or rates observable in the swaps market), prepayment speeds, loan default rate assumptions and loan loss severity assumptions on underlying loans.

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Municipal bonds and notes: Bonds issued by municipal governments generally have stated coupon rates, final maturity dates and are subject to being called ahead of the final maturity date at the option of the issuer. Fair value measurements of these securities are priced based on spreads to other municipal benchmark bonds with similar characteristics; or, relative to market rates on U.S. Treasury bonds of similar maturity.

Interest rate derivative assets and liabilities: Fair value measurements of interest rate derivatives are priced considering the coupon rate of the fixed leg of the contract and the variable coupon on the floating leg of the contract. Valuation is based on both spot and forward rates on the swap yield curve and the credit worthiness of the contract counterparty.

Foreign exchange forward and option contract assets and liabilities: Fair value measurements of these assets and liabilities are priced based on spot and forward foreign currency rates and option volatility assumptions.

Equity warrant assets (public portfolio): Fair value measurements of equity warrant assets of publicly-traded portfolio companies are valued based on the Black-Scholes option pricing model. The model uses the price of publicly-traded companies (underlying stock price), stated strike prices, warrant expiration dates, the risk-free interest rate and market-observable option volatility assumptions.

Level 3

The fair value measurement is derived from valuation techniques that use significant assumptions not observable in the market. These unobservable assumptions reflect our own estimates of assumptions we believe market participants would use in pricing the asset. Below is a summary of the valuation techniques used for each class of Level 3 assets:

Venture capital and private equity fund investments not measured at net asset value: Fair value measurements are based on consideration of a range of factors including, but not limited to, the price at which the investment was acquired, the term and nature of the investment, local market conditions, values for comparable securities, and as it relates to the private company, the current and projected operating performance, exit strategies and financing transactions subsequent to the acquisition of the investment. The significant unobservable inputs used in the fair value measurement include the information about each portfolio company, including actual and forecasted results, cash position, recent or planned transactions and market comparable companies. Significant changes to any one of these inputs in isolation could result in a significant change in the fair value measurement; however, we generally consider all factors available through ongoing communication with the portfolio companies and venture capital fund managers to determine whether there are changes to the portfolio company or the environment that indicate a change in the fair value measurement.

Equity warrant assets (public portfolio): Fair value measurements of equity warrant assets of publicly-traded portfolio companies are valued based on the Black-Scholes option pricing model. The model uses the price of publicly-traded companies (underlying stock price), stated strike prices, warrant expiration dates, the risk-free interest rate and market-observable option volatility assumptions. Modeled asset values are further adjusted by applying a discount of up to 20 percent for certain warrants that have lock-up restrictions or other features that indicate a discount to fair value is warranted. As a lock-up term nears, and other sale restrictions are lifted, discounts are adjusted downward to zero percent once all restrictions expire or are removed.

Equity warrant assets (private portfolio): Fair value measurements of equity warrant assets of private portfolio companies are priced based on a Black-Scholes option pricing model to estimate the asset value by using stated strike prices, option expiration dates, risk-free interest rates and option volatility assumptions. Option volatility assumptions used in the model are based on public market indices whose members operate in similar industries as companies in our private company portfolio. Option expiration dates are modified to account for estimates to actual life relative to stated expiration. Overall model asset values are further adjusted for a general lack of liquidity due to the private nature of the associated underlying company. There is a direct correlation between changes in the volatility and remaining life assumptions in isolation and the fair value measurement while there is an inverse correlation between changes in the liquidity discount assumption and the fair value measurement.

It is our policy to maximize the use of observable inputs and minimize the use of unobservable inputs when developing fair value measurements. When available, we use quoted market prices to measure fair value. If market prices are not available, fair value measurement is based upon valuation techniques that use primarily market-based or independently-sourced market parameters, including interest rate yield curves, prepayment speeds, option volatilities and currency rates. Substantially all of our financial instruments use the foregoing methodologies, and are categorized as a Level 1 or Level 2 measurement in the fair value hierarchy. However, in certain cases, when market observable inputs for our valuation techniques may not be readily available, we are required to make judgments about assumptions we believe market participants would use in estimating the fair value of the financial instrument, and based on the significance of those judgments, the measurement may be determined to be a Level 3 fair value measurement.

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The degree of management judgment involved in determining the fair value of a financial instrument is dependent upon the availability of quoted market prices or observable market parameters. For financial instruments that trade actively and have quoted market prices or observable market parameters, there is minimal subjectivity involved in measuring fair value. When observable market prices and parameters are not fully available, management judgment is necessary to estimate fair value. For inactive markets, there is little information, if any, to evaluate if individual transactions are orderly. Accordingly, we are required to estimate, based upon all available facts and circumstances, the degree to which orderly transactions are occurring and provide more weighting to price quotes that are based upon orderly transactions. In addition, changes in the market conditions may reduce the availability of quoted prices or observable data. For example, reduced liquidity in the capital markets or changes in secondary market activities could result in observable market inputs becoming unavailable. Therefore, when market data is not available, we use valuation techniques requiring more management judgment to estimate the appropriate fair value measurement. Accordingly, the degree of judgment exercised by management in determining fair value is greater for financial assets and liabilities categorized as Level 3.

The following fair value hierarchy table presents information about our assets and liabilities that are measured at fair value on a recurring basis as of September 30, 2018:

(Dollars in thousands)	Level 1		Level 2		Level 3		Balance at September 30, 2018
Assets:
Available-for-sale securities:
U.S. Treasury securities	$	5,501,874	$	—	$	—	$	5,501,874
U.S. agency debentures	—		1,346,672		—		1,346,672
Residential mortgage-backed securities:
Agency-issued collateralized mortgage obligations—fixed rate	—		1,920,541		—		1,920,541
Agency-issued collateralized mortgage obligations—variable rate	—		318,522		—		318,522
Total available-for-sale securities	5,501,874		3,585,735		—		9,087,609
Non-marketable and other equity securities (fair value accounting):
Non-marketable securities:
Venture capital and private equity fund investments measured at net asset value	—		—		—		334,419
Venture capital and private equity fund investments not measured at net asset value (1)	—		—		1,001		1,001
Other equity securities in public companies	2,184		28,276		—		30,460
Total non-marketable and other equity securities (fair value accounting)	2,184		28,276		1,001		365,880
Other assets:
Foreign exchange forward and option contracts	—		81,903		—		81,903
Equity warrant assets	—		6,478		140,489		146,967
Client interest rate derivatives	—		6,262		—		6,262
Total assets	$	5,504,058	$	3,708,654	$	141,490	$	9,688,621
Liabilities:
Foreign exchange forward and option contracts	$	—	$	76,165	$	—	$	76,165
Client interest rate derivatives	—		15,156		—		15,156
Total liabilities	$	—	$	91,321	$	—	$	91,321

(1) Included in Level 3 assets is $0.9 million attributable to noncontrolling interests calculated based on the ownership percentages of the noncontrolling interests.

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The following fair value hierarchy table presents information about our assets and liabilities that are measured at fair value on a recurring basis as of December 31, 2017:

(Dollars in thousands)	Level 1		Level 2		Level 3		Balance at December 31, 2017
Assets:
Available-for-sale securities:
U.S. Treasury securities	$	6,840,502	$	—	$	—	$	6,840,502
U.S. agency debentures	—		1,567,128		—		1,567,128
Residential mortgage-backed securities:
Agency-issued collateralized mortgage obligations—fixed rate	—		2,267,035		—		2,267,035
Agency-issued collateralized mortgage obligations—variable rate	—		373,730		—		373,730
Equity securities	158		72,111		—		72,269
Total available-for-sale securities	6,840,660		4,280,004		—		11,120,664
Non-marketable and other equity securities (fair value accounting):
Non-marketable securities:
Venture capital and private equity fund investments measured at net asset value	—		—		—		127,192
Venture capital and private equity fund investments not measured at net asset value (1)	—		—		919		919
Other equity securities in public companies (1)	310		—		—		310
Total non-marketable and other equity securities (fair value accounting)	310		—		919		128,421
Other assets:
Foreign exchange forward and option contracts	—		96,636		—		96,636
Equity warrant assets	—		2,432		121,331		123,763
Client interest rate derivatives	—		11,753		—		11,753
Total assets	$	6,840,970	$	4,390,825	$	122,250	$	11,481,237
Liabilities:
Foreign exchange forward and option contracts	$	—	$	96,641	$	—	$	96,641
Client interest rate derivatives	—		11,940		—		11,940
Total liabilities	$	—	$	108,581	$	—	$	108,581

(1) Included in Level 1 and Level 3 assets are $0.2 million and $0.8 million, respectively, attributable to noncontrolling interests calculated based on the ownership percentages of the noncontrolling interests.

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The following table presents additional information about Level 3 assets measured at fair value on a recurring basis for the three and nine months endedSeptember 30, 2018 and 2017:

(Dollars in thousands)	Beginning Balance		Total Realized and Unrealized Gains (Losses) Included in Income			Sales/Exits			Issuances		Distributions and Other Settlements		Transfers Out of Level 3			Ending Balance
Three months ended September 30, 2018
Non-marketable and other securities (fair value accounting):
Venture capital and private equity fund investments not measured at net asset value (1)	$	1,001	$	—		$	—		$	—	$	—	$	—		$	1,001
Other assets:
Equity warrant assets (2)	137,753		32,237			(34,101		)	4,809		—		(209		)	140,489
Total assets	$	138,754	$	32,237		$	(34,101	)	$	4,809	$	—	$	(209	)	$	141,490
Three months ended September 30, 2017
Non-marketable and other securities (fair value accounting):
Venture capital and private equity fund investments not measured at net asset value (1)	$	1,897	$	—		$	—		$	—	$	—	$	—		$	1,897
Other assets:
Equity warrant assets (2)	128,952		24,354			(17,412		)	3,622		—		(441		)	139,075
Total assets	$	130,849	$	24,354		$	(17,412	)	$	3,622	$	—	$	(441	)	$	140,972
Nine months ended September 30, 2018
Non-marketable and other securities (fair value accounting):
Other venture capital investments (1)	$	919	$	82		$	—		$	—	$	—	$	—		$	1,001
Other assets:
Equity warrant assets (2)	121,331		69,097			(61,464		)	14,007		—		(2,482		)	140,489
Total assets	$	122,250	$	69,179		$	(61,464	)	$	14,007	$	—	$	(2,482	)	$	141,490
Nine months ended September 30, 2017
Non-marketable and other securities (fair value accounting):
Other venture capital investments (1)	$	2,040	$	(143	)	$	—		$	—	$	—	$	—		$	1,897
Other assets:
Equity warrant assets (2)	128,813		41,549			(40,998		)	11,071		—		(1,360		)	139,075
Total assets	$	130,853	$	41,406		$	(40,998	)	$	11,071	$	—	$	(1,360	)	$	140,972

(1) Realized and unrealized gains (losses) are recorded in the line item “Gains on investment securities, net," a component of noninterest income.

(2) Realized and unrealized gains (losses) are recorded in the line item “Gains on equity warrant assets, net," a component of noninterest income.

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The following table presents the amount of net unrealized gains and losses included in earnings (which is inclusive of noncontrolling interest) attributable to Level 3 assets still held at September 30, 2018 and 2017:

	Three months ended September 30,				Nine months ended September 30,
(Dollars in thousands)	2018		2017		2018		2017
Non-marketable and other securities (fair value accounting):
Venture capital and private equity fund investments not measured at net asset value (1)	$	—	$	—	$	82	$	(143	)
Other assets:
Equity warrant assets (2)	15,841		17,827		30,954		23,734
Total unrealized gains, net	$	15,841	$	17,827	$	31,036	$	23,591
Unrealized gains (losses) attributable to noncontrolling interests (1)	$	—	$	—	$	73	$	(127	)

(1) Unrealized gains (losses) are recorded in the line item “Gains on investment securities, net," a component of noninterest income.

(2) Unrealized gains (losses) are recorded in the line item “Gains on equity warrant assets, net," a component of noninterest income.

The extent to which any unrealized gains or losses will become realized is subject to a variety of factors, including, among other things, the expiration of current sales restrictions to which these securities are subject, the actual sales of securities and the timing of such actual sales.

The following table presents quantitative information about the significant unobservable inputs used for certain of our Level 3 fair value measurements at September 30, 2018 and December 31, 2017. We have not included in this table our venture capital and private equity fund investments (fair value accounting) as we use net asset value per share (as obtained from the general partners of the investments) as a practical expedient to determine fair value.

(Dollars in thousands)	Fair value		Valuation Technique	Significant Unobservable Inputs	Weighted  Average
September 30, 2018:
Venture capital and private equity fund investments (fair value accounting)	$	1,001	Private company equity pricing	(1)	(1	)
Equity warrant assets (public portfolio)	1,805		Black-Scholes option pricing model	Volatility	53.1	%
				Risk-Free interest rate	3.0
				Sales restrictions discount (2)	14.1
Equity warrant assets (private portfolio)	138,684		Black-Scholes option pricing model	Volatility	38.2
				Risk-Free interest rate	2.8
				Marketability discount (3)	17.2
				Remaining life assumption (4)	45.0
December 31, 2017:
Venture capital and private equity fund investments (fair value accounting)	$	919	Private company equity pricing	(1)	(1	)
Equity warrant assets (public portfolio)	1,936		Black-Scholes option pricing model	Volatility	47.9	%
				Risk-Free interest rate	2.1
				Sales restrictions discount (2)	15.5
Equity warrant assets (private portfolio)	119,395		Black-Scholes option pricing model	Volatility	36.7
				Risk-Free interest rate	1.8
				Marketability discount (3)	16.4
				Remaining life assumption (4)	45.0

(1) In determining the fair value of our venture capital and private equity fund investment portfolio (not measured at net asset value), we evaluate a variety of factors related to each underlying private portfolio company including, but not limited to, actual and forecasted results, cash position, recent or planned transactions and market comparable companies. Additionally, we have ongoing communication with the portfolio companies and venture capital fund managers, to determine whether there is a material change in fair value. We use company provided valuation reports, if available, to support our valuation assumptions. These factors are specific to each portfolio company and a weighted average or range of values of the unobservable inputs is not meaningful.

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(2) We adjust quoted market prices of public companies, which are subject to certain sales restrictions. Sales restriction discounts generally range from 10 percent to 20 percent depending on the duration of the sales restrictions, which typically range from three to six months.

(3) Our marketability discount is applied to all private company warrants to account for a general lack of liquidity due to the private nature of the associated underlying company. The quantitative measure used is based upon various option-pricing models. On a quarterly basis, a sensitivity analysis is performed on our marketability discount.

(4) We adjust the contractual remaining term of private company warrants based on our estimate of the actual remaining life, which we determine by utilizing historical data on cancellations and exercises. At September 30, 2018, the weighted average contractual remaining term was 6.2 years, compared to our estimated remaining life of 2.8 years. On a quarterly basis, a sensitivity analysis is performed on our remaining life assumption.

For the three and nine months endedSeptember 30, 2018 and 2017, we did not have any transfers between Level 2 and Level 1 or transfers between Level 3 and Level 1. All transfers from Level 3 to Level 2 for the three and nine months endedSeptember 30, 2018 and 2017 were due to the transfer of equity warrant assets from our private portfolio to our public portfolio (see our Level 3 reconciliation above). All amounts reported as transfers represent the fair value as of the date of the change in circumstances that caused the transfer.

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Financial Instruments not Carried at Fair Value

FASB guidance over financial instruments requires that we disclose estimated fair values for our financial instruments not carried at fair value. The following fair value hierarchy table presents the estimated fair values of our financial instruments that are not carried at fair value at September 30, 2018 and December 31, 2017:

			Estimated Fair Value
(Dollars in thousands)	Carrying Amount		Total		Level 1		Level 2		Level 3
September 30, 2018:
Financial assets:
Cash and cash equivalents	$	3,819,141	$	3,819,141	$	3,819,141	$	—	$	—
Held-to-maturity securities	15,899,726		15,372,238		—		15,372,238		—
Non-marketable securities not measured at net asset value	134,646		134,646		—		—		134,646
Non-marketable securities measured at net asset value	134,017		134,017		—		—		—
Net commercial loans	24,253,625		23,285,628		—		—		23,285,628
Net consumer loans	2,955,577		2,809,916		—		—		2,809,916
FHLB and Federal Reserve Bank stock	102,378		102,378		—		—		102,378
Financial liabilities:
Short-term borrowings	2,631,252		2,631,252		—		2,631,252		—
Non-maturity deposits (1)	48,518,701		48,518,701		48,518,701		—		—
Time deposits	77,410		77,047		—		77,047		—
3.50% Senior Notes	347,554		338,370		—		338,370		—
5.375% Senior Notes	348,663		363,447		—		363,447		—
Off-balance sheet financial assets:
Commitments to extend credit	—		22,857		—		—		22,857
December 31, 2017:
Financial assets:
Cash and cash equivalents	$	2,923,075	$	2,923,075	$	2,923,075	$	—	$	—
Held-to-maturity securities	12,663,455		12,548,280		—		12,548,280		—
Non-marketable securities (cost and equity method accounting) not measured at net asset value	120,019		126,345		—		—		126,345
Non-marketable securities (cost and equity method accounting) measured at net asset value	228,399		331,496		—		—		—
Net commercial loans	20,238,247		20,520,623		—		—		20,520,623
Net consumer loans	2,613,045		2,593,538		—		—		2,593,538
FHLB and Federal Reserve Bank stock	60,020		60,020		—		—		60,020
Financial liabilities:
Short-term borrowings	1,033,730		1,033,730		1,033,730		—		—
Non-maturity deposits (1)	44,206,929		44,206,929		44,206,929		—		—
Time deposits	47,146		46,885		—		46,885		—
3.50% Senior Notes	347,303		352,058		—		352,058		—
5.375% Senior Notes	348,189		374,483		—		374,483		—
Off-balance sheet financial assets:
Commitments to extend credit	—		22,208		—		—		22,208

(1) Includes noninterest-bearing demand deposits, interest-bearing checking accounts, money market accounts and interest-bearing sweep deposits.

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Investments in Entities that Calculate Net Asset Value Per Share

FASB guidance over certain fund investments requires that we disclose the fair value of funds, significant investment strategies of the investees, redemption features of the investees, restrictions on the ability to sell investments, estimate of the period of time over which the underlying assets are expected to be liquidated by the investee, and unfunded commitments related to the investments.

Our investments in debt funds and venture capital and private equity fund investments generally cannot be redeemed. Alternatively, we expect distributions, if any, to be received primarily through IPO and M&A activity of the underlying assets of the fund. Subject to applicable requirements under the Volcker Rule, we do not have any plans to sell any of these fund investments. If we decide to sell these investments in the future, the investee fund’s management must approve of the buyer before the sale of the investments can be completed. The fair values of the fund investments have been estimated using the net asset value per share of the investments, adjusted for any differences between our measurement date and the date of the fund investment’s net asset value by using the most recently available financial information from the investee general partner, for example June 30^th, for our September 30^th consolidated financial statements, adjusted for any contributions paid, distributions received from the investment, and significant fund transactions or market events during the reporting period.

The following table is a summary of the estimated fair values of these investments and remaining unfunded commitments for each major category of these investments as of September 30, 2018:

(Dollars in thousands)	Carrying Amount		Fair Value		Unfunded Commitments
Non-marketable securities (fair value accounting):
Venture capital and private equity fund investments (1)	$	334,419	$	334,419	$	13,255
Non-marketable securities (equity method accounting):
Venture capital and private equity fund investments (2)	112,537		112,537		4,943
Debt funds (2)	5,241		5,241		—
Other investments (2)	16,239		16,239		886
Total	$	468,436	$	468,436	$	19,084

(1) Venture capital and private equity fund investments within non-marketable securities (fair value accounting) include investments made by our managed funds of funds and one of our direct venture funds (consolidated VIEs) and investments in venture capital and private equity fund investments (unconsolidated VIEs). Collectively, these investments in venture capital and private equity funds are primarily in U.S. and global technology and life science/healthcare companies. Included in the fair value and unfunded commitments of fund investments under fair value accounting are $93.0 million and $4.3 million, respectively, attributable to noncontrolling interests. It is estimated that we will receive distributions from the fund investments over the next 10 to 13 years, depending on the age of the funds and any potential extensions of terms of the funds.

(2) Venture capital and private equity fund investments, debt funds, and other fund investments within non-marketable securities (equity method accounting) include funds that invest in or lend money to primarily U.S. and global technology and life science/healthcare companies. It is estimated that we will receive distributions from the funds over the next 5 to 8 years, depending on the age of the funds and any potential extensions of the terms of the funds.

16. Legal Matters

Certain lawsuits and claims arising in the ordinary course of business have been filed or are pending against us and/or our affiliates, and we may from time to time be involved in other legal or regulatory proceedings. In accordance with applicable accounting guidance, we establish accruals for all such matters, including expected settlements, when we believe it is probable that a loss has been incurred and the amount of the loss is reasonably estimable. When a loss contingency is not both probable and estimable, we do not establish an accrual. Any such loss estimates are inherently uncertain, based on currently available information and are subject to management’s judgment and various assumptions. Due to the inherent subjectivity of these estimates and unpredictability of outcomes of legal proceedings, any amounts accrued may not represent the ultimate resolution of such matters.

To the extent we believe any potential loss relating to such matters may have a material impact on our liquidity, consolidated financial position, results of operations, and/or our business as a whole and is reasonably possible but not probable, we aim to disclose information relating to such potential loss. We also aim to disclose information relating to any material potential loss that is probable but not reasonably estimable. In such cases, where reasonably practicable, we aim to provide an estimate of loss or range of potential loss. No disclosures are generally made for any loss contingencies that are deemed to be remote.

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Based upon information available to us, our review of lawsuits and claims filed or pending against us to date and consultation with our outside legal counsel, we have not recognized a material accrual liability for any such matters, nor do we currently expect that these matters will result in a material liability to the Company. However, the outcome of litigation and other legal and regulatory matters is inherently uncertain, and it is possible that one or more of such matters currently pending or threatened could have an unanticipated material adverse effect on our liquidity, consolidated financial position, results of operations, and/or our business as a whole, in the future.

17. Related Parties

We have no material related party transactions requiring disclosure. In the ordinary course of business, the Bank may extend credit to related parties, including executive officers, directors, principal shareholders and their related interests. Additionally, we provide real estate secured loans to eligible employees through our EHOP. For additional details, see Note 17—“Employee Compensation and Benefit Plans" under Part II, Item 8 of our 2017 Form 10-K.

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

Forward-Looking Statements

This Quarterly Report on Form 10-Q, including in particular “Management’s Discussion and Analysis of Financial Condition and Results of Operations” under Part I, Item 2 of this report, contains forward-looking statements within the meaning of the safe harbor provisions of the Private Securities Litigation Reform Act of 1995. In addition, management has in the past and might in the future make forward-looking statements orally to analysts, investors, the media and others. Forward-looking statements are statements that are not historical facts. Broadly speaking, forward-looking statements include, but are not limited to, the following:

• Financial projections, including with respect to our net interest income, noninterest income, earnings per share, noninterest expenses (including professional services, compliance, compensation and other costs), cash flows, balance sheet positions, capital expenditures, liquidity and capitalization or other financial items;

• Descriptions of our strategic initiatives, plans or objectives for future operations, including pending sales or acquisitions;

• Forecasts of private equity/venture capital funding and investment levels;

• Forecasts of future interest rates, economic performance, and income from investments;

• Forecasts of expected levels of provisions for loan losses, nonperforming loans, loan growth and client funds; and

• Descriptions of assumptions underlying or relating to any of the foregoing.

You can identify these and other forward-looking statements by the use of words such as “becoming,” “may,” “will,” “should,” "could,""would," “predict,” “potential,” “continue,” “anticipate,” “believe,” “estimate,” “assume,” “seek,” “expect,” “plan,” “intend,” the negative of such words, or comparable terminology. Forward-looking statements are neither historical facts nor assurances of future performance. Although we believe that the expectations reflected in these forward-looking statements are reasonable, we have based these expectations on our current beliefs as well as our assumptions, and such expectations may prove to be incorrect. Because forward-looking statements relate to the future, they are subject to inherent uncertainties, risks and changes in circumstances that are difficult to predict and many of which are outside of our control. Our actual results of operations and financial performance could differ significantly from those expressed in or implied by our management’s forward-looking statements. Important factors that could cause our actual results and financial condition to differ from the expectations stated in the forward-looking statements include, among others:

• Market and economic conditions, including the interest rate environment, and the associated impact on us;

• The credit profile and credit quality of our loan portfolio and volatility of our levels of nonperforming assets and charge-offs;

• The adequacy of our allowance for loan losses and the need to make provisions for loan losses for any period;

• The borrowing needs of our clients;

• The sufficiency of our capital and liquidity positions;

• The levels of loans, deposits and client investment fund balances;

• The performance of our portfolio investments; the general condition of the public and private equity and mergers and acquisitions markets and their impact on our investments, including equity warrant assets, venture capital and private equity funds and direct equity investments;

• Our overall investment plans and strategies; the realization, timing, valuation and performance of our equity or other investments;

• The levels of public offerings, mergers and acquisitions and venture capital investment activity of our clients that may impact the borrowing needs of our clients;

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• The occurrence of fraudulent activity, including breaches of our information security or cyber security-related incidents;

• Business disruptions and interruptions due to natural disasters and other external events;

• The impact on our reputation and business from our interactions with business partners, counterparties, service providers and other third parties;

• Expansion of our business internationally, and the impact of international market and economic events on us;

• The impact of governmental policy, legal requirements and regulations, including the Economic Growth, Regulatory Relief and Consumer Protection Act and the Dodd-Frank Act, promulgated by the Federal Reserve and other regulatory requirements;

• The impact of lawsuits and claims, as well as legal or regulatory proceedings;

• The impact of changes in accounting standards and tax laws, including the impact of the Tax Cuts and Jobs Act;

• The levels of equity capital available to our client or portfolio companies;

• The effectiveness of our risk management framework and quantitative models;

• Our ability to maintain or increase our market share, including through successfully implementing our business strategy and undertaking new business initiatives; and

• Other factors as discussed in “Risk Factors” under Part I, Item 1A in our 2017 Form 10-K.

We urge investors to consider all of these factors carefully in evaluating the forward-looking statements contained in this Quarterly Report on Form 10-Q. All subsequent written or oral forward-looking statements attributable to us or persons acting on our behalf are expressly qualified in their entirety by these cautionary statements. The forward-looking statements included in this filing are made only as of the date of this filing. We assume no obligation and do not intend to revise or update any forward-looking statements contained in this Quarterly Report on Form 10-Q, except as required by law.

The following discussion and analysis of financial condition and results of operations should be read in conjunction with our unaudited interim consolidated financial statements and accompanying notes as presented in Part I, Item 1 of this report and in conjunction with our 2017 Form 10-K.

Reclassifications

Certain prior period amounts, primarily related to the adoption of new accounting guidance, have been reclassified to conform to current period presentations.

Management’s Overview of Third Quarter 2018 Performance

Overall, we had an outstanding third quarter in 2018, which was marked by robust loan and client funds growth, a healthy increase in net interest income, strong warrant- and investment-related gains and solid core fee income increases. Additionally, we saw higher noninterest expense, primarily related to our total compensation and benefits as well as expenses incurred associated with increased investment in client experience and employee enablement. Our core business continued to perform well as a result of our ongoing focus on innovation companies and their investors and continued efforts to secure client relationships. We saw continued success in working with private equity/venture capital firms, our technology and life science/healthcare clients and clients in our private bank division.

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A summary of our performance for the three months endedSeptember 30, 2018 (compared to the three months ended September 30, 2017, where applicable) is as follows:

BALANCE SHEET	EARNINGS
Assets.$56.5 billion in average total assets (up 13.3%). $58.1 billion in period-end total assets (up 14.5%). Loans. $26.3 billion in average total loan balances, net of unearned income (up 21.9%). $27.5 billion in period-end total loan balances, net of unearned income (up 23.9%). Total Client Funds. (on-balance sheet deposits and off-balance sheet client investment funds). $128.7 billion in average total client fund balances (up 32.2%). $130.7 billion in period-end total client fund balances (up 31.9%). Fixed Income Investments.$25.5 billion in average fixed income investment securities (up 10.2%). $25.0 billion in period-end fixed income investment securities (up 5.6%).	EPS.  Earnings per diluted share of $5.10 (up 82.7%). Net Income. Consolidated net income available to common stockholders of $274.8 million (up 84.9%). - Net interest income of $493.2 million (up 31.8%). - Net interest margin of 3.62% (up 52 bps). - Noninterest income of $210.1 million (up 32.3%), with non-GAAP core fee income+ of $131.7 million (up 28.2%). - Noninterest expense of $309.4 million (up 20.0%). ROE. Return on average equity (annualized) (“ROE”) performance of 22.46%. Operating Efficiency Ratio.  Operating efficiency ratio of 44.00%.
CAPITAL	CREDIT QUALITY
Capital. Continued strong capital levels, with all capital ratios considered “well-capitalized” under banking regulations. SVBFG and SVB capital ratios, respectively, were: - CET 1 risk-based capital ratio of 13.28% and 11.98%. - Tier 1 risk-based capital ratio of 13.45% and 11.98%. - Total risk-based capital ratio of 14.34% and 12.91%. - Tier 1 leverage ratio of 8.99% and 7.82%.	Credit Quality.  Continued disciplined underwriting. - Allowance for loan losses of 1.03% as a percentage of period-end total gross loans. - Provision for loan losses of 0.28% as a percentage of period-end total gross loans (annualized). - Net loan charge-offs of 0.30% as a percentage of average total gross loans (annualized).

⁺ Consists of fee income for deposit services, letters of credit and standby letters of credit, credit cards, client investments, foreign exchange and lending-related activities. This is a non-GAAP financial metric. (See the non-GAAP reconciliation under “Results of Operations—Noninterest Income”)

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A summary of our performance for the three and nine months endedSeptember 30, 2018 and 2017 is as follows:

	Three months ended September 30,									Nine months ended September 30,
(Dollars in thousands, except per share data, employees and ratios)	2018			2017			% Change			2018			2017			% Change
Diluted earnings per common share	$	5.10		$	2.79		82.8		%	$	13.15		$	7.01		87.6		%
Net income available to common stockholders	274,817			148,620			84.9			707,576			373,296			89.5
Net interest income	493,222			373,974			31.9			1,379,528			1,026,663			34.4
Net interest margin	3.62		%	3.10		%	52		bps	3.53		%	2.99		%	54		bps
Provision for credit losses	$	17,174		$	23,522		(27.0	)	%	$	74,226		$	70,062		5.9		%
Noninterest income	210,070			158,778			32.3			558,277			404,965			37.9
Noninterest expense	309,445			257,761			20.1			880,601			746,640			17.9
Non-GAAP core fee income (1)	131,714			102,722			28.2			369,848			272,567			35.7
Non-GAAP noninterest income, net of noncontrolling interests (1)	203,378			153,164			32.8			529,116			383,256			38.1
Non-GAAP noninterest expense, net of noncontrolling interests(2)	309,291			257,636			20.0			880,252			746,123			18.0
Balance Sheet:
Average available-for-sale securities	$	9,589,917		$	12,674,610		(24.3	)	%	$	10,124,707		$	12,539,773		(19.3	)	%
Average held-to-maturity securities	15,916,690			10,467,470			52.1			14,764,215			9,405,525			57.0
Average loans, net of unearned income	26,331,377			21,584,892			22.0			25,008,277			20,726,467			20.7
Average noninterest-bearing demand deposits	40,625,772			36,578,779			11.1			39,473,468			34,653,264			13.9
Average interest-bearing deposits	8,466,468			7,464,063			13.4			8,260,894			7,408,371			11.5
Average total deposits	49,092,240			44,042,842			11.5			47,734,362			42,061,635			13.5
Earnings Ratios:
Return on average assets (annualized) (3)	1.93		%	1.18		%	63.6		%	1.74		%	1.05		%	65.7		%
Return on average SVBFG stockholders’ equity (annualized) (4)	22.46			14.59			53.9			20.56			12.85			60.0
Asset Quality Ratios:
Allowance for loan losses as a % of total period-end gross loans	1.03		%	1.12		%	(9	)	bps	1.03		%	1.12		%	(9	)	bps
Allowance for loan losses for performing loans as a % of total gross performing loans	0.86			0.92			(6	)		0.86			0.92			(6	)
Gross loan charge-offs as a % of average total gross loans (annualized)	0.33			0.23			10			0.26			0.33			(7	)
Net loan charge-offs as a % of average total gross loans (annualized)	0.30			0.19			11			0.22			0.29			(7	)
Capital Ratios:
CET 1 risk-based capital ratio	13.28		%	12.96		%	32		bps	13.28		%	12.96		%	32		bps
Tier 1 risk-based capital ratio	13.45			13.32			13			13.45			13.32			13
Total risk-based capital ratio	14.34			14.29			5			14.34			14.29			5
Tier 1 leverage ratio	8.99			8.34			65			8.99			8.34			65
Tangible common equity to tangible assets (5)	8.47			8.00			47			8.47			8.00			47
Tangible common equity to risk-weighted assets (5)	13.00			13.01			(1	)		13.00			13.01			(1	)
Bank CET 1 risk-based capital ratio	11.98			12.41			(43	)		11.98			12.41			(43	)
Bank tier 1 risk-based capital ratio	11.98			12.41			(43	)		11.98			12.41			(43	)
Bank total risk-based capital ratio	12.91			13.40			(49	)		12.91			13.40			(49	)
Bank tier 1 leverage ratio	7.82			7.59			23			7.82			7.59			23
Bank tangible common equity to tangible assets (5)	7.44			7.47			(3	)		7.44			7.47			(3	)
Bank tangible common equity to risk-weighted assets (5)	11.70			12.44			(74	)		11.70			12.44			(74	)
Other Ratios:
GAAP operating efficiency ratio (6)	44.00		%	48.38		%	(9.1	)	%	45.44		%	52.15		%	(12.9	)	%
Non-GAAP operating efficiency ratio (2)	44.22			48.82			(9.4	)		45.97			52.87			(13.1	)
Book value per common share (7)	$	92.48		$	77.00		20.1			$	92.48		$	77.00		20.1
Other Statistics:
Average full-time equivalent employees	2,778			2,434			14.1		%	2,623			2,384			10.0		%
Period-end full-time equivalent employees	2,836			2,433			16.6			2,836			2,433			16.6

(1) See “Results of Operations–Noninterest Income” for a description and reconciliation of non-GAAP core fee income and noninterest income.

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(2) See “Results of Operations–Noninterest Expense” for a description and reconciliation of non-GAAP noninterest expense and non-GAAP operating efficiency ratio.

(3) Ratio represents annualized consolidated net income available to common stockholders divided by quarterly average assets.

(4) Ratio represents annualized consolidated net income available to common stockholders divided by quarterly average SVBFG stockholders’ equity.

(5) See “Capital Resources–Capital Ratios” for a reconciliation of non-GAAP tangible common equity to tangible assets and tangible common equity to risk-weighted assets.

(6) The operating efficiency ratio is calculated by dividing total noninterest expense by total taxable-equivalent net interest income plus noninterest income.

(7) Book value per common share is calculated by dividing total SVBFG stockholders’ equity by total outstanding common shares at period-end.

For more information with respect to our capital ratios, please refer to “Capital Ratios” under “Consolidated Financial Condition-Capital Ratios” below.

Critical Accounting Policies and Estimates

The accompanying management’s discussion and analysis of results of operations and financial condition is based upon our unaudited interim consolidated financial statements, which have been prepared in accordance with GAAP. The preparation of these financial statements in accordance with GAAP requires management to make estimates and judgments that affect the reported amounts of assets, liabilities, revenues, expenses and related disclosure of contingent assets and liabilities. Management evaluates estimates and assumptions on an ongoing basis. Management bases its estimates on historical experiences and various other factors and assumptions that are believed to be reasonable under the circumstances. Actual results may differ materially from these estimates under different assumptions or conditions.

There have been no significant changes during the nine months endedSeptember 30, 2018 to the items that we disclosed as our critical accounting policies and estimates in “Management’s Discussion and Analysis of Financial Condition and Results of Operations” under Part II, Item 7 of our 2017 Form 10-K.

Results of Operations

Net Interest Income and Margin (Fully Taxable Equivalent Basis)

Net interest income is defined as the difference between interest earned on loans, fixed income investment portfolio (available-for-sale and held-to-maturity securities) and short-term investment securities and the interest paid on funding sources which consist primarily of interest-bearing deposits and borrowings. Net interest income is our principal source of revenue. Net interest margin is defined as the amount of annualized net interest income, on a fully taxable equivalent basis, expressed as a percentage of average interest-earning assets. Net interest income and net interest margin are presented on a fully taxable equivalent basis to consistently reflect income from taxable loans and securities and tax-exempt securities based on the federal statutory tax rate of 21.0 percent for the three and nine months ended September 30, 2018 and 35.0 percent for the three and nine months ended September 30, 2017.

Analysis of Net Interest Income Changes Due to Volume and Rate (Fully Taxable Equivalent Basis)

Net interest income is affected by changes in the amount and composition of interest-earning assets and interest-bearing liabilities, referred to as “volume change.” Net interest income is also affected by changes in yields earned on interest-earning assets and rates paid on interest-bearing liabilities, referred to as “rate change.” The following table sets forth changes in interest income for each major category of interest-earning assets and interest expense for each major category of interest-bearing liabilities. The table also reflects the amount of simultaneous changes attributable to both volume and rate changes for the periods indicated. For this table, changes that are not solely due to either volume or rate are allocated in proportion to the percentage changes in average volume and average rate.

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	2018 Compared to 2017									2018 Compared to 2017
	Three months ended September 30, increase (decrease) due to change in									Nine months ended September 30, increase (decrease) due to change in
(Dollars in thousands)	Volume			Rate			Total			Volume			Rate			Total
Interest income:
Federal Reserve deposits, federal funds sold, securities purchased under agreements to resell, trade receivables purchased and other short-term investment securities	$	(2,374	)	$	4,299		$	1,925		$	(5,542	)	$	8,952		$	3,410
Fixed income investment portfolio (taxable)	12,205			20,428			32,633			54,852			54,082			108,934
Fixed income investment portfolio (non-taxable)	11,666			137			11,803			25,610			(13		)	25,597
Loans, net of unearned income	63,515			20,393			83,908			167,744			65,997			233,741
Increase in interest income, net	85,012			45,257			130,269			242,664			129,018			371,682
Interest expense:
Interest bearing checking and savings accounts	26			3			29			92			4			96
Money market deposits	1,080			4,623			5,703			2,121			9,993			12,114
Money market deposits in foreign offices	3			(2		)	1			7			(5		)	2
Time deposits	11			7			18			11			11			22
Sweep deposits in foreign offices	(10		)	(3		)	(13		)	(32		)	(11		)	(43		)
Total increase in deposits expense	1,110			4,628			5,738			2,199			9,992			12,191
Short-term borrowings	3,775			100			3,875			4,444			314			4,758
3.50% Senior Notes	3			—			3			9			—			9
5.375% Senior Notes	9			—			9			26			—			26
Junior Subordinated Debentures	(831		)	—			(831		)	(2,494		)	—			(2,494		)
6.05% Senior Notes	—			—			—			(467		)	—			(467		)
Total increase in borrowings expense	2,956			100			3,056			1,518			314			1,832
Increase in interest expense, net	4,066			4,728			8,794			3,717			10,306			14,023
Increase in net interest income	$	80,946		$	40,529		$	121,475		$	238,947		$	118,712		$	357,659

Net Interest Income (Fully Taxable Equivalent Basis)

Three months ended September 30, 2018 and 2017

Net interest income increased by $121.5 million to $496.1 million for the three months endedSeptember 30, 2018, compared to $374.6 million for the comparable 2017 period. Overall, our net interest income increased primarily from interest earned on loans, reflective of higher average loan balances driven by strong loan growth from our private equity/venture capital loan portfolio as well as increases from our life science/healthcare and software/internet loan portfolios and rate increases subsequent to September 30, 2017. In addition, we saw an increase in interest earned on our fixed income investment securities portfolio reflective of higher average fixed income investment securities balances driven by higher average deposit balances as well as an increase in yield from rate increases.

The main factors affecting interest income for the three months endedSeptember 30, 2018, compared to the comparable 2017 period are discussed below:

• Interest income for the three months endedSeptember 30, 2018 increased by $130.3 million due primarily to:

◦ An $83.9 million increase in interest income on loans to $352.4 million for the three months endedSeptember 30, 2018, compared to $268.4 million for the comparable 2017 period. The increase was reflective of an increase in average loan balances of $4.7 billion and an increase in the overall loan yield of 38 basis points to 5.31 percent from 4.93 percent. Gross loan yields, excluding loan interest recoveries and loan fees, increased 51 basis points to 4.81 percent from 4.30 percent, reflective primarily of the benefit of interest rate increases.Loan fee yields were down 11 basis points to 50 basis points from 61 basis points for the three months ended September 30, 2018 reflective of lower loan repayments,

◦ A $44.4 million increase in interest income on fixed income investment securities to $155.7 million for the three months endedSeptember 30, 2018, compared to $111.2 million for the comparable 2017 period. The increase was reflective of an increase in average fixed income investments of $2.4 billion due to growth in average deposit balances and an increase in our fixed income investment securities yield of 51 basis points to

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2.42 percent from 1.91 percent resulting primarily from higher reinvestment yields on maturing fixed income investments as well as higher yields on new purchases due to interest rate increases, and

◦ A $1.9 million increase in interest income from our interest earning cash and short-term investment securities. The increase was due to the benefit from the impact of the increases in the Federal Funds target rate since September 30, 2017, partially offset by a decrease of $0.7 billion in average interest-earning Federal Reserve cash balances.

• Interest expense for the three months endedSeptember 30, 2018 increased by $8.8 milliondue primarily to:

◦ A $5.7 million increase in interest expense on deposits due primarily to an increase in interest paid on our interest-bearing money market deposits as a result of market rate adjustments as well as growth in average money market deposits of $0.9 billion, and

◦ A $3.1 million increase in interest expense on borrowings primarily due to a $0.7 billion increase in our average short-term borrowings during the three months ended September 30, 2018, to fund loan growth as a result of the timing of loan funding and deposit activities at the end of the third quarter of 2018.

The main factors affecting interest income and interest expense for the nine months endedSeptember 30, 2018, compared to the comparable 2017 period are discussed below:

• Interest income for the nine months endedSeptember 30, 2018 increased by $371.7 million due primarily to:

◦ A $233.7 million increase in interest income on loans to $979.7 million for the nine months endedSeptember 30, 2018, compared to $746.0 million for the comparable 2017 period. The increase was reflective of an increase in average loan balances of $4.3 billion and an increase in the overall loan yield of 43 basis points to 5.24 percent from 4.81 percent. Gross loan yields, excluding loan interest recoveries and loan fees, increased 52 basis points to 4.70 percent from 4.18 percent, reflective of the benefit of interest rate increases, partially offset by the strong growth of our lower yielding private equity/venture capital loan portfolio. Our private equity/venture capital loan portfolio represented 48.3 percent and 43.1 percent of our total gross loan portfolio at September 30, 2018 and 2017, respectively.Loan fee yields were down 6 basis points to 54 basis points from 60 basis points for the nine months ended September 30, 2018 reflective of lower loan repayments,

◦ A $134.6 million increase in interest income on fixed income investment securities to $433.5 million for the nine months endedSeptember 30, 2018, compared to $298.9 million for the comparable 2017 period. The increase was reflective of an increase in average fixed income investments of $2.9 billion due to growth in average deposit balances and an increase in our fixed income investment securities yield of 51 basis points to 2.33 percent from 1.82 percent resulting primarily from higher reinvestment yields on maturing fixed income investments as well as higher yields on new purchases due to interest rate increases, and

◦ A $3.4 million increase in interest income from our interest earning cash and short-term investment securities. The increase was due to the benefit from the impact of the increases in the Federal Funds target rate since September 30, 2017, partially offset by a decrease of $0.7 billion in average interest-earning Federal Reserve cash balances.

• Interest expense for the nine months endedSeptember 30, 2018 increased by $14.0 million primarily due to:

◦ A $12.2 million increase in interest expense on deposits due primarily to an increase in interest paid on our interest-bearing money market deposits as a result of market rate adjustments as well as growth in average money market deposits of $0.8 billion, and

◦ A $1.8 million increase in interest expense on borrowings primarily due to a $0.3 billion increase in our average short-term borrowings during the nine months ended September 30, 2018 to fund loan growth as well as to support the short-term liquidity needs of the Bank partially offset set by the repayment of our 6.05% Subordinated Notes and the redemption of our Junior Subordinated Debentures in 2017.

Net Interest Margin (Fully Taxable Equivalent Basis)

Three months ended September 30, 2018 and 2017

• Our net interest margin increased by 52 basis points to 3.62 percent for the three months endedSeptember 30, 2018, compared to 3.10 percent for the comparable 2017 period. The higher margin during the third quarter of 2018 was reflective primarily of the increases in the Federal Funds target rate since September 30, 2017 as well as a shift in the mix of the growth in our interest-earning assets to higher-yielding loans from our interest earning cash and other

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short-term investment securities. Average loans represented 48.4 percent of average interest earnings assets for the three months ended September 30, 2018, compared to 45.0 percent for the comparable 2017 period.

Nine months ended September 30, 2018 and 2017

• Our net interest margin increased by 54 basis points to 3.53 percent for the nine months endedSeptember 30, 2018, compared to 2.99 percent for the comparable 2017 period. The higher margin for the nine months ended September 30, 2018, was reflective primarily of the increases in the Federal Funds target rate since September 30, 2017, as well as a shift in the mix of the growth in our interest-earning assets to higher-yielding loans from our interest earning cash and other short-term investment securities. Average loans represented 47.7 percent of the average interest earnings assets for the nine months ended September 30, 2018, compared to 45.2 percent for the comparable 2017 period.

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Average Balances, Yields and Rates Paid (Fully Taxable Equivalent Basis)

The average yield earned on interest-earning assets is the amount of annualized fully taxable equivalent interest income expressed as a percentage of average interest-earning assets. The average rate paid on funding sources is the amount of annualized interest expense expressed as a percentage of average funding sources. The following tables set forth average assets, liabilities, noncontrolling interests and SVBFG stockholders’ equity, interest income, interest expense, annualized yields and rates, and the composition of our annualized net interest margin for the three and nine months endedSeptember 30, 2018 and 2017:

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Average Balances, Rates and Yields for the Three Months Ended September 30, 2018 and 2017

	Three months ended September 30,
	2018								2017
(Dollars in thousands)	Average Balance			Interest Income/ Expense			Yield/ Rate		Average Balance			Interest Income/ Expense			Yield/ Rate
Interest-earning assets:
Federal Reserve deposits, federal funds sold, securities purchased under agreements to resell and other short-term investment securities (1)	$	2,548,271		$	8,137		1.27	%	$	3,291,908		$	6,211		0.75	%
Investment securities: (2)
Available-for-sale securities:
Taxable	9,589,917			46,684			1.93		12,674,610			52,825			1.65
Held-to-maturity securities:
Taxable	14,385,027			95,391			2.63		10,249,131			56,618			2.19
Non-taxable (3)	1,531,663			13,606			3.52		218,339			1,803			3.28
Total loans, net of unearned income (4) (5)	26,331,377			352,353			5.31		21,584,892			268,445			4.93
Total interest-earning assets	54,386,255			516,171			3.77		48,018,880			385,902			3.19
Cash and due from banks	553,132								371,373
Allowance for loan losses	(296,177		)						(246,210		)
Other assets (6)	1,821,827								1,651,323
Total assets	$	56,465,037							$	49,795,366
Funding sources:
Interest-bearing liabilities:
Interest bearing checking and savings accounts	$	572,242		$	116		0.08	%	$	442,518		$	86		0.08	%
Money market deposits	6,704,337			7,782			0.46		5,774,281			2,079			0.14
Money market deposits in foreign offices	218,734			22			0.04		187,183			21			0.04
Time deposits	74,597			35			0.19		51,406			17			0.13
Sweep deposits in foreign offices	896,558			87			0.04		1,008,675			101			0.04
Total interest-bearing deposits	8,466,468			8,042			0.38		7,464,063			2,304			0.12
Short-term borrowings	745,156			4,039			2.15		48,614			164			1.34
3.50% Senior Notes	347,499			3,147			3.59		347,168			3,144			3.59
5.375% Senior Notes	348,557			4,863			5.54		347,934			4,854			5.53
Junior Subordinated Debentures	—			—			—		54,391			831			6.06
Total interest-bearing liabilities	9,907,680			20,091			0.80		8,262,170			11,297			0.54
Portion of noninterest-bearing funding sources	44,478,575								39,756,710
Total funding sources	54,386,255			20,091			0.15		48,018,880			11,297			0.09
Noninterest-bearing funding sources:
Demand deposits	40,625,772								36,578,779
Other liabilities	932,544								773,586
SVBFG stockholders’ equity	4,854,440								4,041,218
Noncontrolling interests	144,601								139,613
Portion used to fund interest-earning assets	(44,478,575		)						(39,756,710		)
Total liabilities, noncontrolling interest, and SVBFG stockholders’ equity	$	56,465,037							$	49,795,366
Net interest income and margin				$	496,080		3.62	%				$	374,605		3.10	%
Total deposits	$	49,092,240							$	44,042,842
Reconciliation to reported net interest income:
Adjustments for taxable equivalent basis				(2,858		)						(631		)
Net interest income, as reported				$	493,222							$	373,974

(1) Includes average interest-earning deposits in other financial institutions of $0.7 billion and $1.3 billion for the three months ended September 30, 2018 and 2017, respectively. For the three months ended September 30, 2018 and 2017, balances also include $1.4 billion and $1.9 billion, respectively, deposited at the FRB, earning interest at the Federal Funds target rate.

(2) Yields on interest-earning investment securities do not give effect to changes in fair value that are reflected in other comprehensive income.

(3) Interest income on non-taxable investment securities is presented on a fully taxable equivalent basis using the federal statutory tax rate of 21.0 percent for the three months ended September 30, 2018, and 35.0 percent for the three months ended September 30, 2017.

(4) Nonaccrual loans are reflected in the average balances of loans.

(5) Interest income includes loan fees of $33.1 million and $33.4 million for the three months ended September 30, 2018 and 2017, respectively.

(6) Average investment securities of $761 million and $692 million for the three months ended September 30, 2018 and 2017, respectively, were classified as other assets as they were noninterest-earning assets. These investments consisted primarily of non-marketable and other securities.

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Average Balances, Rates and Yields for the Nine Months EndedSeptember 30, 2018 and 2017

	Nine months ended September 30,
	2018								2017
(Dollars in thousands)	Average Balance			Interest Income/ Expense			Yield/ Rate		Average Balance			Interest Income/ Expense			Yield/ Rate
Interest-earning assets:
Federal Reserve deposits, federal funds sold, securities purchased under agreements to resell and other short-term investment securities (1)	$	2,535,749		$	20,080		1.06	%	$	3,235,628		$	16,670		0.69	%
Investment securities: (2)
Available-for-sale securities:
Taxable	10,124,707			141,266			1.87		12,539,773			146,803			1.57
Held-to-maturity securities:
Taxable	13,597,340			262,436			2.58		9,242,953			147,965			2.14
Non-taxable (3)	1,166,875			29,755			3.41		162,572			4,158			3.42
Total loans, net of unearned income (4) (5)	25,008,277			979,724			5.24		20,726,467			745,983			4.81
Total interest-earning assets	52,432,948			1,433,261			3.65		45,907,393			1,061,579			3.09
Cash and due from banks	496,658								361,041
Allowance for loan losses	(280,102		)						(243,594		)
Other assets (6)	1,783,148								1,540,211
Total assets	$	54,432,652							$	47,565,051
Funding sources:
Interest-bearing liabilities:
Interest bearing checking and savings accounts	$	578,313		$	338		0.08	%	$	420,680		$	242		0.08	%
Money market deposits	6,437,372			17,658			0.37		5,664,082			5,544			0.13
Money market deposits in foreign offices	206,924			61			0.04		183,040			59			0.04
Time deposits	59,561			71			0.16		50,855			49			0.13
Sweep deposits in foreign offices	978,724			281			0.04		1,089,714			324			0.04
Total interest-bearing deposits	8,260,894			18,409			0.30		7,408,371			6,218			0.11
Short-term borrowings	328,425			5,053			2.06		39,523			295			1.00
3.50% Senior Notes	347,416			9,438			3.63		347,088			9,429			3.63
5.375% Senior Notes	348,400			14,584			5.60		347,786			14,558			5.60
Junior Subordinated Debentures	—			—			—		54,434			2,494			6.13
6.05% Subordinated Notes	—			—			—		25,641			467			2.44
Total interest-bearing liabilities	9,285,135			47,484			0.68		8,222,843			33,461			0.54
Portion of noninterest-bearing funding sources	43,147,813								37,684,550
Total funding sources	52,432,948			47,484			0.12		45,907,393			33,461			0.10
Noninterest-bearing funding sources:
Demand deposits	39,473,468								34,653,264
Other liabilities	930,985								668,417
SVBFG stockholders’ equity	4,602,027								3,883,876
Noncontrolling interests	141,037								136,651
Portion used to fund interest-earning assets	(43,147,813		)						(37,684,550		)
Total liabilities, noncontrolling interest, and SVBFG stockholders’ equity	$	54,432,652							$	47,565,051
Net interest income and margin				$	1,385,777		3.53	%				$	1,028,118		2.99	%
Total deposits	$	47,734,362							$	42,061,635
Reconciliation to reported net interest income:
Adjustments for taxable equivalent basis				(6,249		)						(1,455		)
Net interest income, as reported				$	1,379,528							$	1,026,663

(1) Includes average interest-earning deposits in other financial institutions of $0.9 billion and $1.0 billion for the nine months endedSeptember 30, 2018, and 2017, respectively. The balance also includes $1.4 billion and $2.1 billion deposited at the FRB, earning interest at the Federal Funds target rate for the nine months endedSeptember 30, 2018, and 2017, respectively.

(2) Yields on interest-earning investment securities do not give effect to changes in fair value that are reflected in other comprehensive income.

(3) Interest income on non-taxable available-for-sale securities is presented on a fully taxable-equivalent basis using the federal statutory income tax rate of 21.0 percent for the nine months endedSeptember 30, 2018, and 35.0 percent for the nine months ended September 30, 2017.

(4) Nonaccrual loans are reflected in the average balances of loans.

(5) Interest income includes loan fees of $100.8 million and $93.5 million for the nine months endedSeptember 30, 2018, and 2017, respectively.

(6) Average investment securities of $774 million and $674 million for the nine months endedSeptember 30, 2018, and 2017, respectively, were classified as other assets as they were noninterest-earning assets. These investments consisted primarily of non-marketable securities.

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Provision for Credit Losses

The provision for credit losses is the combination of both the provision for loan losses and the provision for unfunded credit commitments. Our provision for loan losses is a function of our reserve methodology, which is used to determine an appropriate allowance for loan losses for the period. Our reserve methodology is based on our evaluation of the existing allowance for loan losses in relation to total gross loans using historical and other objective information, and on our qualitative assessment of the inherent and identified credit risk of the loan portfolio. Our provision for unfunded credit commitments is determined using a methodology that is similar to the methodology used for calculating the allowance for loan losses, adjusted for factors specific to binding commitments, including the probability of funding and exposure at funding. Our provision for credit losses equals our best estimate of probable credit losses that are inherent in the portfolios at the balance sheet date.

The following table summarizes our allowance for loan losses and the allowance for unfunded credit commitments for the three and nine months endedSeptember 30, 2018 and 2017:

	Three months ended September 30,						Nine months ended September 30,
(Dollars in thousands, except ratios)	2018			2017			2018			2017
Allowance for loan losses, beginning balance	$	286,709		$	236,496		$	255,024		$	225,366
Provision for loan losses	19,436			22,409			74,088			67,273
Gross loan charge-offs	(22,205		)	(12,338		)	(48,220		)	(51,449		)
Loan recoveries	2,164			1,828			5,878			6,155
Foreign currency translation adjustments	(391		)	615			(1,057		)	1,665
Allowance for loan losses, ending balance	$	285,713		$	249,010		$	285,713		$	249,010
Allowance for unfunded credit commitments, beginning balance	54,104			47,000			51,770			45,265
(Reduction of) provision for unfunded credit commitments	(2,262		)	1,113			138			2,789
Foreign currency translation adjustments	(34		)	59			(100		)	118
Allowance for unfunded credit commitments, ending balance (1)	$	51,808		$	48,172		$	51,808		$	48,172
Ratios and other information:
Provision for loan losses as a percentage of period-end total gross loans (annualized)	0.28		%	0.40		%	0.36		%	0.40		%
Gross loan charge-offs as a percentage of average total gross loans (annualized)	0.33			0.23			0.26			0.33
Net loan charge-offs as a percentage of average total gross loans (annualized)	0.30			0.19			0.22			0.29
Allowance for loan losses as a percentage of period-end total gross loans	1.03			1.12			1.03			1.12
Provision for credit losses	$	17,174		$	23,522		$	74,226		$	70,062
Period-end total gross loans	27,668,829			22,329,829			27,668,829			22,329,829
Average total gross loans	26,497,171			21,712,866			25,165,486			20,850,468

(1) The “allowance for unfunded credit commitments” is included as a component of “other liabilities.”

Three months ended September 30, 2018 and 2017

Our provision for credit losses was $17.2 million for the three months endedSeptember 30, 2018, consisting of a provision for loan losses of $19.4 million and a reduction of our allowance for unfunded credit commitments of $2.2 million. Our provision for credit losses was $23.5 million for the three months endedSeptember 30, 2017, consisting of a provision for loan losses of $22.4 million and a provision for unfunded credit commitments of $1.1 million.

The provision for loan losses of $19.4 million for the three months ended September 30, 2018 reflects primarily an increase of $12.9 million in additional reserves for period-end loan growth, $9.2 million for charge-offs not specifically reserved for and $9.3 million in net new specific reserves for nonaccrual loans, partially offset by a decrease in the qualitative component of our performing loan reserves of $8.2 million reflective of the continued growth of larger, higher credit quality private equity/venture capital loans as a percentage of total gross loans.

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Thereduction of the allowance for unfunded credit commitments of $2.2 million was driven primarily by a decrease in reserves reflective primarily of the continued shift in the mix of our unfunded credit facilities consisting of large, higher credit quality private equity/venture capital loans mentioned above.

The provision for loan losses of $22.4 million for the three months ended September 30, 2017 primarily reflects $13.8 million in net new specific reserves for nonaccrual loans and a $10.9 million increase in reserves for period-end loan growth, partially offset by a benefit from the overall improved credit quality of our loan portfolio and the continued shift in our loan portfolio to private equity/venture capital loans, which tend to be of higher credit quality.

The provision for unfunded credit commitments of $1.1 million for three months ended September 30, 2017 was driven primarily by a change in the mix of our outstanding credit commitments.

Gross loan charge-offs were $22.2 million for the three months endedSeptember 30, 2018, of which $9.2 million was not specifically reserved for at June 30, 2018. Gross loan charge-offs included $12.7 million from our hardware loan portfolio and consisted primarily of $11.1 million for one early-stage client and $6.3 million from our software/internet loan portfolio primarily attributable to one mid-stage client.

Gross loan charge-offs were $12.3 million for the three months endedSeptember 30, 2017, of which $6.3 million was not specifically reserved for in prior quarters. Gross loan charge-offs were primarily from four clients consisting of $8.7 million from two clients in our software/internet loan portfolio, of which $5.9 million was a late-stage client loan, and two early-stage client loan charge-offs amounting to $3.5 million from our hardware and life science/healthcare portfolios.

Nine months ended September 30, 2018 and 2017

Our provision for credit losses was $74.2 million for the nine months endedSeptember 30, 2018, consisting of a provision for loan losses of $74.1 million and a provision for unfunded credit commitments of $0.1 million. Our provision for credit losses was $70.1 million for the nine months ended September 30, 2017, consisting of a provision for loan losses of $67.3 million and a provision for unfunded credit commitments of $2.8 million.

The provision for loan losses of $74.1 million for the nine months endedSeptember 30, 2018 was reflective primarily of $39.4 million from period-end loan growth, $34.0 million in net new specific reserves for nonaccrual loans and $24.0 million for charge-offs not specifically reserved for in prior quarters, partially offset by a decrease in reserves of $20.7 million for our performing loans from certain reserve methodology enhancements made to our qualitative reserve for large loan exposure as a result of growth within our higher credit quality private equity/venture capital loan portfolios.

The provision for loan losses of $67.3 million for the nine months ended September 30, 2017 was reflective primarily of $51.9 million in net new specific reserves for nonaccrual loans and $20.9 million from period-end loan growth, partially offset by a benefit from the overall improved credit quality of our loan portfolio and the continued shift in our loan portfolio to private equity/venture capital loans, which tend to be of higher credit quality.

The provision for unfunded credit commitments of $0.1 million for nine months endedSeptember 30, 2018 was drivenprimarily by increased reserves of $4.5 million from growth in unfunded credit commitment balances, offset by a decrease in reserves reflective of the methodology enhancements mentioned above. Our provision for unfunded credit commitments was $2.8 million for the nine months ended September 30, 2017 driven primarily by qualitative allocations based on our loan portfolio being comprised of larger loans.

Gross loan charge-offs were $48.2 million for the nine months endedSeptember 30, 2018, of which $24.0 million was not specifically reserved for in prior quarters. Gross loan charge-offs included $26.4 million from our software/internet loan portfolio and $16.1 million from our hardware loan portfolio and consisted primarily of $24.4 million from early-stage clients, $8.7 million for one sponsor-led buyout loan, $4.8 million from one mid-stage client and $3.2 million from one late-stage client. Gross loan charge-offs of $51.4 million for the nine months ended September 30, 2017, included $27.8 million from our early-stage portfolio and $13.0 million from two Corporate Finance client loans. These charge-offs were primarily from our software/internet loan portfolio.

See “Consolidated Financial Condition—Credit Quality and Allowance for Loan Losses” below and Note 7—“Loans, Allowance for Loan Losses and Allowance for Unfunded Credit Commitments” of the “Notes to Interim Consolidated Financial Statements (unaudited)” under Part I, Item 1 of this report for further details on our allowance for loan losses.

Noninterest Income

For the three and nine months endedSeptember 30, 2018, noninterest income was $210.1 million and $558.3 million, respectively, compared to $158.8 million and $405.0 million for the comparable 2017 periods. For the three and nine months endedSeptember 30, 2018, non-GAAP noninterest income, net of noncontrolling interests was $203.4 million and $529.1 million, respectively, compared to $153.2 million and $383.3 million for the comparable 2017 periods. For the three and nine months

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endedSeptember 30, 2018, non-GAAP core fee income was $131.7 million and $369.8 million, respectively, compared to $102.7 million and $272.6 million for the comparable 2017 periods. (See reconciliations of non-GAAP measures used below under “Use of Non-GAAP Financial Measures”.)

Use of Non-GAAP Financial Measures

To supplement our unaudited interim consolidated financial statements presented in accordance with GAAP, we use certain non-GAAP measures of financial performance (including, but not limited to, non-GAAP core fee income, non-GAAP noninterest income, and non-GAAP net gains on investment securities). These supplemental performance measures may vary from, and may not be comparable to, similarly titled measures by other companies in our industry. Non-GAAP financial measures are not in accordance with, or an alternative for, GAAP. Generally, a non-GAAP financial measure is a numerical measure of a company’s performance that either excludes or includes amounts that are not normally excluded or included in the most directly comparable measure calculated and presented in accordance with GAAP. A non-GAAP financial measure may also be a financial metric that is not required by GAAP or other applicable requirement.

We believe these non-GAAP financial measures, when taken together with the corresponding GAAP financial measures, provide meaningful supplemental information regarding our performance by excluding items that represent income attributable to investors other than us and our subsidiaries and certain other non-recurring items. Our management uses, and believes that investors benefit from referring to, these non-GAAP financial measures in assessing our operating results and when planning, forecasting and analyzing future periods. However, these non-GAAP financial measures should be considered in addition to, not as a substitute for or preferable to, financial measures prepared in accordance with GAAP.

Included in net income is income and expense attributable to noncontrolling interests. We recognize, as part of our investment funds management business through SVB Capital, the entire income or loss from funds consolidated in accordance with ASC Topic 810 as discussed in Note 1—“Basis of Presentation” of the “Notes to Interim Consolidated Financial Statements (unaudited)” under Part I, Item 1 of this report. We are required under GAAP to consolidate 100% of the results of these entities, even though we may own less than 100% of such entities. The relevant amounts attributable to investors other than us are reflected under “Net Income Attributable to Noncontrolling Interests” on our statements of income. Where applicable, the tables below for noninterest income and net gains on investment securities exclude noncontrolling interests.

Core fee income is a non-GAAP financial measure, which represents GAAP noninterest income, but excludes certain line items where performance is typically subject to market or other conditions beyond our control, primarily our net gains (losses) on investment securities and equity warrant assets. Core fee income includes foreign exchange fees, credit card fees, deposit service charges, lending related fees, client investment fees and letters of credit and standby letters of credit fees.

The following table provides a reconciliation of GAAP noninterest income to non-GAAP noninterest income, net of noncontrolling interests, for the three and nine months endedSeptember 30, 2018 and 2017:

	Three months ended September 30,						Nine months ended September 30,
(Dollars in thousands)	2018		2017		% Change		2018		2017		% Change
GAAP noninterest income	$	210,070	$	158,778	32.3	%	$	558,277	$	404,965	37.9	%
Less: income attributable to noncontrolling interests, including carried interest allocation	6,692		5,614		19.2		29,161		21,709		34.3
Non-GAAP noninterest income, net of noncontrolling interests	$	203,378	$	153,164	32.8		$	529,116	$	383,256	38.1

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The following table provides a reconciliation of GAAP noninterest income to non-GAAP core fee income for the three and nine months endedSeptember 30, 2018 and 2017:

	Three months ended September 30,						Nine months ended September 30,
(Dollars in thousands)	2018		2017		% Change		2018		2017		% Change
GAAP noninterest income	$	210,070	$	158,778	32.3	%	$	558,277	$	404,965	37.9	%
Less: gains on investment securities, net	32,193		15,238		111.3		77,365		48,838		58.4
Less: gains on equity warrant assets, net	34,141		24,922		37.0		72,393		42,432		70.6
Less: other noninterest income	12,022		15,896		(24.4	)	38,671		41,128		(6.0	)
Non-GAAP core fee income (1)	$	131,714	$	102,722	28.2		$	369,848	$	272,567	35.7

(1) Non-GAAP core fee income represents noninterest income, but excludes certain line items where performance is typically subject to market or other conditions beyond our control and includes foreign exchange fees, credit card fees, deposit service charges, lending related fees, client investment fees and letters of credit and standby letters of credit fees.

Gains on Investment Securities, Net

Net gains and losses on investment securities include gains and losses from our non-marketable and other equity securities, which include public equity securities held as a result of exercised equity warrant assets, as well as gains and losses from sales of our AFS debt securities portfolio, when applicable.

Our non-marketable and other equity securities portfolio primarily represents investments in venture capital and private equity funds, SPD Silicon Valley Bank Co., Ltd. (the Bank's joint venture bank in China (“SPD-SVB”)), debt funds, private and public portfolio companies and investments in qualified affordable housing projects. We experience variability in the performance of our non-marketable and other equity securities from period to period, which results in net gains or losses on investment securities (both realized and unrealized). This variability is due to a number of factors, including unrealized changes in the values of our investments, changes in the amount of realized gains and losses from distributions, changes in liquidity events and general economic and market conditions. Unrealized gains or losses from non-marketable and other equity securities for any single period are typically driven by valuation changes, and are therefore subject to potential increases or decreases in future periods. Such variability may lead to volatility in the gains or losses from investment securities. As such, our results for a particular period are not necessarily indicative of our expected performance in a future period.

The extent to which any unrealized gains or losses will become realized is subject to a variety of factors, including, among other things, the expiration of certain sales restrictions to which these equity securities may be subject to (i.e., lock-up agreements), changes in prevailing market prices, market conditions, the actual sales or distributions of securities, and the timing of such actual sales or distributions, which, to the extent such securities are managed by our managed funds, are subject to our funds' separate discretionary sales/distributions and governance processes.

Our AFS securities portfolio is a fixed income investment portfolio that is managed with the objective of earning an appropriate portfolio yield over the long-term while maintaining sufficient liquidity and credit diversification as well as addressing our asset/liability management objectives. Though infrequent, sales of debt securities in our AFS securities portfolio may result in net gains or losses and are conducted pursuant to the guidelines of our investment policy related to the management of our liquidity position and interest rate risk.

Three months ended September 30, 2018 and 2017

For the three months endedSeptember 30, 2018, we had net gains on investment securities of $32.2 million, compared to $15.2 million for the comparable 2017 period. Non-GAAP net gains on investment securities, net of noncontrolling interests, were $25.6 million for the three months endedSeptember 30, 2018, compared to $9.7 million for the comparable 2017 period.

Non-GAAP net gains on investment securities, net of noncontrolling interests, of $25.6 million for the three months endedSeptember 30, 2018 were driven by the following:

• Gains of $11.5 million from our strategic and other investments portfolio, comprised primarily of net unrealized valuation increases in private company investments held in our strategic venture capital funds,

• Gains of $7.0 million from our managed funds of funds portfolio, related primarily to net unrealized valuation increases in private company investments held by the funds in the portfolio, and

• Gains of $4.4 million from our public equity securities portfolio primarily attributable to $5.2 million in unrealized gains related to our holdings of one company that had an IPO during the third quarter of 2018.

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Nine months ended September 30, 2018 and 2017

For the nine months endedSeptember 30, 2018, we had net gains on investment securities of $77.4 million, compared to $48.8 million for the comparable 2017 period. Non-GAAP net gains on investment securities, net of noncontrolling interests, were $48.1 million for the nine months endedSeptember 30, 2018, compared to $27.4 million for the comparable 2017 period.

Non-GAAP net gains, net of noncontrolling interests, of $48.1 million for the nine months endedSeptember 30, 2018 were driven primarily by the following:

• Gains of $42.3 million from our strategic and other investments portfolio, attributable primarily to net unrealized valuation increases in both private and public company investments held in our strategic venture capital funds,

• Gains of $21.6 million from our managed funds of funds portfolio, related primarily to net unrealized valuation increases in both private and public company investments held by the funds in the portfolio, and

• Losses of $17.8 million from our public equity securities portfolio primarily reflective of net losses on sales of shares of Roku, Inc. ("Roku"), from exercised warrants in 2017, which were sold in the first quarter of 2018.

The following tables provide a reconciliation of GAAP total gains (losses) on investment securities, net, to non-GAAP net gains (losses) on investment securities, net of noncontrolling interests, for the three and nine months endedSeptember 30, 2018 and 2017:

(Dollars in thousands)	Managed Funds of Funds		Managed Direct Venture Funds		Public Equity Securities (1)			Debt Funds			Sales of AFS Securities (1)		Strategic and Other Investments		Total
Three months ended September 30, 2018
Total gains on investment securities, net	$	12,949	$	1,863	$	4,372		$	1,473		$	—	$	11,536	$	32,193
Less: income attributable to noncontrolling interests, including carried interest allocation	5,914		727		—			—			—		—		6,641
Non-GAAP net gains on investment securities, net of noncontrolling interests	$	7,035	$	1,136	$	4,372		$	1,473		$	—	$	11,536	$	25,552
Nine months ended September 30, 2018
Total gains (losses) on investment securities, net	$	49,553	$	3,377	$	(17,770	)	$	(100	)	$	—	$	42,305	$	77,365
Less: income attributable to noncontrolling interests, including carried interest allocation	27,904		1,314		—			—			—		—		29,218
Non-GAAP net gains (losses) on investment securities, net of noncontrolling interests	$	21,649	$	2,063	$	(17,770	)	$	(100	)	$	—	$	42,305	$	48,147

(1) Effective January 1, 2018, we adopted Accounting Standard update ("ASU") 2016-01, Recognition and Measurement of Financial Assets and Financial Liabilities, resulting in the reclassification of public equity securities out of our AFS securities portfolio into our non-marketable and other equity securities portfolio. This guidance was adopted using the modified retrospective method with a cumulative adjustment to opening retained earnings. As such, prior period amounts have not been restated.

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(Dollars in thousands)	Managed Funds of Funds		Managed Direct Venture Funds		Debt Funds		Sales of AFS Securities			Strategic and Other Investments		Total
Three months ended September 30, 2017
Total gains (losses) on investment securities, net	$	8,446	$	729	$	2,445	$	(101	)	$	3,719	$	15,238
Less: income attributable to noncontrolling interests, including carried interest allocation	5,335		161		—		—			—		5,496
Non-GAAP net gains (losses) on investment securities, net of noncontrolling interests	$	3,111	$	568	$	2,445	$	(101	)	$	3,719	$	9,742
Nine months ended September 30, 2017
Total gains on investment securities, net	$	30,624	$	894	$	2,696	$	384		$	14,240	$	48,838
Less: income attributable to noncontrolling interests, including carried interest allocation	21,245		178		—		—			—		21,423
Non-GAAP net gains on investment securities, net of noncontrolling interests	$	9,379	$	716	$	2,696	$	384		$	14,240	$	27,415

Gains on Equity Warrant Assets, Net

Three months ended September 30, 2018 and 2017

Net gains on equity warrant assets were $34.1 million for the three months endedSeptember 30, 2018, compared to net gains of $24.9 million for the comparable 2017 period. Net gains on equity warrant assets for the three months endedSeptember 30, 2018 consisted of:

• Net gains of $18.3 million from the exercise of equity warrant assets compared to net gains of $7.4 million, primarily driven by increased IPO and M&A activity during the three months endedSeptember 30, 2018, and

• Net gains of $17.3 million from changes in warrant valuation increases compared to net gains of $18.2 million, driven by valuation increases in our private company warrant portfolio during the three months ended September 30, 2018.

Nine months ended September 30, 2018 and 2017

Net gains on equity warrant assets were $72.4 million for the nine months endedSeptember 30, 2018, compared to net gains of $42.4 million for the comparable 2017 period. Net gains on equity warrant assets for the nine months endedSeptember 30, 2018 consisted of:

• Net gains of $42.8 million from the exercise of equity warrant assets compared to net gains of $22.5 million , reflective primarily of increased IPO and M&A activity during the nine months endedSeptember 30, 2018, and

• Net gains of $32.7 million from changes in warrant valuation increases compared to net gains of $23.6 million, driven by our private company warrant portfolio and reflective of increased M&A activity during the nine months endedSeptember 30, 2018.

A summary of gains on equity warrant assets, net, for the three and nine months endedSeptember 30, 2018 and 2017 is as follows:

	Three months ended September 30,								Nine months ended September 30,
(Dollars in thousands)	2018			2017			% Change		2018			2017			% Change
Equity warrant assets (1)
Gains on exercises, net	$	18,287		$	7,449		145.5	%	$	42,808		$	22,482		90.4	%
Cancellations and expirations	(1,432		)	(757		)	89.2		(3,158		)	(3,614		)	(12.6	)
Changes in fair value, net	17,286			18,230			(5.2	)	32,743			23,564			39.0
Gains on equity warrant assets, net	$	34,141		$	24,922		37.0		$	72,393		$	42,432		70.6

(1) At September 30, 2018, we held warrants in 2,031 companies, compared to 1,842 companies at September 30, 2017. The total fair value of our warrant portfolio was $147.0 million at September 30, 2018 and $141.8 million at September 30, 2017. Warrants in 18 companies each had fair values greater than $1.0 million and collectively represented $42.8 million, or 29.1 percent, of the fair value of the total warrant portfolio at September 30, 2018. Warrants in 16 companies each had

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fair values greater than $1.0 million and collectively represented $51.7 million, or 36.5 percent, of the fair value of the total warrant portfolio at September 30, 2017.

Non-GAAP Core Fee Income

	Three months ended September 30,						Nine months ended September 30,
(Dollars in thousands)	2018		2017		% Change		2018		2017		% Change
Non-GAAP core fee income (1):
Foreign exchange fees	$	32,656	$	29,671	10.1	%	$	100,560	$	82,026	22.6	%
Credit card fees	24,121		20,270		19.0		68,739		56,099		22.5
Deposit service charges	19,588		14,508		35.0		56,081		43,046		30.3
Client investment fees	36,265		15,563		133.0		88,592		37,571		135.8
Lending related fees	10,675		15,404		(30.7	)	30,938		32,874		(5.9	)
Letters of credit and standby letters of credit fees	8,409		7,306		15.1		24,938		20,951		19.0
Total non-GAAP core fee income (1)	$	131,714	$	102,722	28.2		$	369,848	$	272,567	35.7

(1) This non-GAAP measure represents noninterest income, but excludes certain line items where performance is typically subject to market or other conditions beyond our control. See “Use of Non-GAAP Measures” above.

Foreign Exchange Fees

Foreign exchange fees were $32.7 million and $100.6 million for the three and nine months endedSeptember 30, 2018, respectively, compared to $29.7 million and $82.0 million for the comparable 2017 periods. The increases in foreign exchange fees were driven primarily by increases in spot contract commissions driven by increased volume of trades for the three and nine months endedSeptember 30, 2018 compared to the 2017 periods. The volume of trades for spot contracts increased 32.1 percent and 32.8 percent for the three and nine months ended September 30, 2018, respectively, compared to the comparable 2017 periods reflective primarily of our global expansion initiative and increased client engagement efforts.A summary of foreign exchange fee income by instrument type for the three and nine months endedSeptember 30, 2018 and 2017 is as follows:

	Three months ended September 30,						Nine months ended September 30,
(Dollars in thousands)	2018		2017		% Change		2018		2017		% Change
Foreign exchange fees by instrument type:
Spot contract commissions	$	30,041	$	27,700	8.5	%	$	92,791	$	73,707	25.9	%
Forward contract commissions	2,534		1,877		35.0		7,474		7,948		(6.0	)
Option premium fees	81		94		(13.8	)	295		371		(20.5	)
Total foreign exchange fees	$	32,656	$	29,671	10.1		$	100,560	$	82,026	22.6

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Credit Card Fees

Credit card fees were $24.1 million and $68.7 million for the three and nine months endedSeptember 30, 2018, respectively, compared to $20.3 million and $56.1 million for the comparable 2017 periods. The increases were primarily due to higher gross interchange fee income driven by an increase in transaction volume reflective of higher spend by our commercial clients and our focus on our credit card business as a key area targeted for growth. The increase in gross interchange fee income was partially offset by an increase in rebates/rewards expense for the three and nine months endedSeptember 30, 2018. A summary of credit card fees by instrument type for the three and nine months endedSeptember 30, 2018 and 2017 is as follows:

	Three months ended September 30,						Nine months ended September 30,
(Dollars in thousands)	2018		2017		% Change		2018		2017		% Change
Credit card fees by instrument type:
Card interchange fees, net	$	18,849	$	16,179	16.5	%	$	54,547	$	44,182	23.5	%
Merchant service fees	3,679		2,930		25.6		10,010		8,553		17.0
Card service fees	1,593		1,161		37.2		4,182		3,364		24.3
Total credit card fees	$	24,121	$	20,270	19.0		$	68,739	$	56,099	22.5

Deposit Service Charges

Deposit service charges were $19.6 million and $56.1 million for the three and nine months endedSeptember 30, 2018, respectively, compared to $14.5 million and $43.0 million for the comparable 2017 periods. The increases were reflective of higher deposit client counts, as well as higher volumes of our transaction-based fee products, during the three and nine months endedSeptember 30, 2018.

Client Investment Fees

Client investment fees were $36.3 million and $88.6 million for the three and nine months endedSeptember 30, 2018, respectively, compared to $15.6 million and $37.6 million for the comparable 2017 periods. The increases were reflective of the large increase in average client investment funds driven by our clients’ increased utilization of our off-balance sheet sweep money market funds and products managed by SVB Asset Management. Client investment fees also benefited from improved spreads on our client investment funds due to increases in general market rates and the reintroduction of fees that had been previously waived due to the low rate environment. A summary of client investment fees by instrument type for the three and nine months endedSeptember 30, 2018 and 2017 is as follows:

	Three months ended September 30,						Nine months ended September 30,
(Dollars in thousands)	2018		2017		% Change		2018		2017		% Change
Client investment fees by type:
Sweep money market fees	$	21,105	$	7,968	164.9	%	$	50,605	$	18,838	168.6	%
Asset management fees	6,358		4,177		52.2		17,447		11,666		49.6
Repurchase agreement fees	8,802		3,418		157.5		20,540		7,067		190.6
Total client investment fees	$	36,265	$	15,563	133.0		$	88,592	$	37,571	135.8

The following table summarizes average client investment funds for the three and nine months endedSeptember 30, 2018 and 2017:

	Three months ended September 30,						Nine months ended September 30,
(Dollars in millions)	2018		2017		% Change		2018		2017		% Change
Sweep money market funds	$	34,556	$	20,165	71.4	%	$	30,284	$	18,783	61.2	%
Client investment assets under management(1)	36,541		26,123		39.9		33,561		24,531		36.8
Repurchase agreements	8,464		6,985		21.2		7,905		6,190		27.7
Total average client investment funds (2)	$	79,561	$	53,273	49.3		$	71,750	$	49,504	44.9

(1) These funds represent investments in third-party money market mutual funds and fixed-income securities managed by SVB Asset Management.

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(2) Client investment funds are maintained at third-party financial institutions and are not recorded on our balance sheet.

The following table summarizes period-end client investment funds at September 30, 2018 and December 31, 2017:

(Dollars in millions)	September 30, 2018		December 31, 2017		% Change
Sweep money market funds	$	36,067	$	23,911	50.8	%
Client investment assets under management (1)	37,649		29,344		28.3
Repurchase agreements	8,369		7,074		18.3
Total period-end client investment funds (2)	$	82,085	$	60,329	36.1

(1) These funds represent investments in third-party money market mutual funds and fixed-income securities managed by SVB Asset Management.

(2) Client investment funds are maintained at third-party financial institutions and are not recorded on our balance sheet.

Lending Related Fees

Lending related fees were $10.7 million and $30.9 million for the three and nine months endedSeptember 30, 2018, respectively, compared to $15.4 million and $32.9 million for the comparable 2017 periods. The decreases were due primarily to a one-time adjustment of $4.5 million during the three months ended September 30, 2017 related to fees earned in prior periods from unused lines of credit. A summary of lending related fees by instrument type for the three and nine months endedSeptember 30, 2018 and 2017 is as follows:

	Three months ended September 30,						Nine months ended September 30,
(Dollars in thousands)	2018		2017		% Change		2018		2017		% Change
Lending related fees by instrument type:
Unused commitment fees	$	8,410	$	12,334	(31.8	)%	$	24,994	$	25,923	(3.6	)%
Other	2,265		3,070		(26.2	)	5,944		6,951		(14.5	)
Total lending related fees	$	10,675	$	15,404	(30.7	)	$	30,938	$	32,874	(5.9	)

Noninterest Expense

A summary of noninterest expense for the three and nine months endedSeptember 30, 2018 and 2017 is as follows:

	Three months ended September 30,						Nine months ended September 30,
(Dollars in thousands)	2018		2017		% Change		2018		2017		% Change
Compensation and benefits	$	195,437	$	153,263	27.5	%	$	543,198	$	449,412	20.9	%
Professional services	36,542		32,987		10.8		112,080		86,331		29.8
Premises and equipment	19,858		18,937		4.9		57,576		53,753		7.1
Net occupancy	13,694		12,660		8.2		40,598		35,437		14.6
Business development and travel	12,712		10,329		23.1		35,998		30,913		16.4
FDIC and state assessments	9,550		8,359		14.2		29,306		26,354		11.2
Correspondent bank fees	3,513		3,162		11.1		10,200		9,770		4.4
Other	18,139		18,064		0.4		51,645		54,670		(5.5	)
Total noninterest expense	$	309,445	$	257,761	20.1		$	880,601	$	746,640	17.9

Included in noninterest expense is expense attributable to noncontrolling interests. See below for a description and reconciliation of non-GAAP noninterest expense and non-GAAP operating efficiency ratio, both of which exclude noncontrolling interests.

Non-GAAP Noninterest Expense

We use and report non-GAAP noninterest expense, non-GAAP taxable equivalent revenue and non-GAAP operating efficiency ratio, which excludes noncontrolling interests. We believe these non-GAAP financial measures, when taken together with the corresponding GAAP financial measures, provide meaningful supplemental information regarding our performance by:

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(i) excluding certain items that represent expenses attributable to investors other than us and our subsidiaries, or certain items that do not occur every reporting period; or (ii) providing additional information used by management that is not otherwise required by GAAP or other applicable requirements. Our management uses, and believes that investors benefit from referring to, these non-GAAP financial measures in assessing our operating results and when planning, forecasting and analyzing future periods. However, these non-GAAP financial measures should be considered in addition to, not as a substitute for or preferable to, financial measures prepared in accordance with GAAP.

The table below provides a summary of non-GAAP noninterest expense and non-GAAP operating efficiency ratio, both net of noncontrolling interests for the three and nine months endedSeptember 30, 2018 and 2017:

	Three months ended September 30,								Nine months ended September 30,
(Dollars in thousands, except ratios)	2018			2017			% Change		2018			2017			% Change
GAAP noninterest expense	$	309,445		$	257,761		20.1	%	$	880,601		$	746,640		17.9	%
Less: amounts attributable to noncontrolling interests	154			125			23.2		349			517			(32.5	)
Non-GAAP noninterest expense, net of noncontrolling interests	$	309,291		$	257,636		20.0		$	880,252		$	746,123		18.0
GAAP net interest income	$	493,222		$	373,974		31.9		$	1,379,528		$	1,026,663		34.4
Adjustments for taxable equivalent basis	2,858			631			NM		6,249			1,455			NM
Non-GAAP taxable equivalent net interest income	$	496,080		$	374,605		32.4		$	1,385,777		$	1,028,118		34.8
Less: income attributable to noncontrolling interests	10			9			11.1		29			26			11.5
Non-GAAP taxable equivalent net interest income, net of noncontrolling interests	$	496,070		$	374,596		32.4		$	1,385,748		$	1,028,092		34.8
GAAP noninterest income	$	210,070		$	158,778		32.3		$	558,277		$	404,965		37.9
Less: income attributable to noncontrolling interests	6,692			5,614			19.2		29,161			21,709			34.3
Non-GAAP noninterest income, net of noncontrolling interests	$	203,378		$	153,164		32.8		$	529,116		$	383,256		38.1
GAAP total revenue	$	703,292		$	532,752		32.0		$	1,937,805		$	1,431,628		35.4
Non-GAAP taxable equivalent revenue, net of noncontrolling interests	$	699,448		$	527,760		32.5		$	1,914,864		$	1,411,348		35.7
GAAP operating efficiency ratio	44.00		%	48.38		%	(9.1	)	45.44		%	52.15		%	(12.9	)
Non-GAAP operating efficiency ratio (1)	44.22			48.82			(9.4	)	45.97			52.87			(13.1	)

NM—Not meaningful

(1) The non-GAAP operating efficiency ratio is calculated by dividing non-GAAP noninterest expense, net of noncontrolling interests, by non-GAAP taxable-equivalent revenue, net of noncontrolling interests.

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Compensation and Benefits Expense

The following table provides a summary of our compensation and benefits expense for the three and nine months endedSeptember 30, 2018 and 2017:

	Three months ended September 30,						Nine months ended September 30,
(Dollars in thousands, except employees)	2018		2017		% Change		2018		2017		% Change
Compensation and benefits:
Salaries and wages	$	84,962	$	72,799	16.7	%	$	234,832	$	207,687	13.1	%
Incentive compensation & ESOP	57,375		37,668		52.3		155,390		108,310		43.5
Other employee incentives and benefits (1)	53,100		42,796		24.1		152,976		133,415		14.7
Total compensation and benefits	$	195,437	$	153,263	27.5		$	543,198	$	449,412	20.9
Period-end full-time equivalent employees	2,836		2,433		16.6		2,836		2,433		16.6
Average full-time equivalent employees	2,778		2,434		14.1		2,623		2,384		10.0

(1) Other employee incentives and benefits includes employer payroll taxes, group health and life insurance, share-based compensation, 401(k), warrant and retention plans, agency fees and other employee-related expenses.

Compensation and benefits expense was $195.4 million for the three months endedSeptember 30, 2018, compared to $153.3 million for the comparable 2017 period. The key changes in factors affecting compensation and benefits expense were as follows:

• An increase of $19.7 million in incentive compensation and ESOP expense reflective primarily of our strong 2018 full-year expected performance as compared to 2017 as well as an increase in the number of average FTE since September 30, 2017,

• An increase of $12.2 million in salaries and wages reflective primarily of the increase in the number of average FTE by 344 to 2,778 for the third quarter of 2018 compared to the same period in 2017, as well as merit increases, and

• An increase of $10.3 million in other employee incentives and benefits primarily driven by an increase in employer group health insurance and payroll taxes of $2.5 million and $2.4 million, respectively, reflective of the increase in the number of average FTE since September 30, 2017, as well as an increase of $2.9 million in share-based compensation expense, primarily due to increased grants of restricted stock awards and at higher values at date of grant, reflective of the increase in our stock price, for the third quarter of 2018 as compared to the third quarter of 2017.

Compensation and benefits expense was $543.2 million for the nine months endedSeptember 30, 2018, compared to $449.4 million for the comparable 2017 period. The key changes in factors affecting compensation and benefits expense were as follows:

• An increase of $47.1 million in incentive compensation and ESOP expense reflective primarily of our strong 2018 full-year expected performance as compared to 2017 as well as an increase in the number of average FTE since September 30, 2017,

• An increase of $27.1 million in salaries and wages reflective primarily of the increase in the number of average FTE by 239 to 2,623 for the nine months ended September 30, 2018, compared to the same period in 2017, as well as merit increases, and

• An increase of $19.6 million in other employee incentives and benefits primarily driven by an increase in employer payroll taxes of $6.3 million, reflective of the increase in the number of average FTE since the third quarter of 2017, as well as an increase of $6.2 million in share-based compensation expense, primarily due to increased grants of restricted stock awards and at higher values at date of grant, reflective of the increase in our stock price, for the nine months ended September 30, 2018 as compared to the nine months ended September 30, 2017. The remaining increase is related to other employee benefit expenses reflective of the increase in the number of average FTE as mentioned previously.

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Our variable compensation plans consist primarily of our Incentive Compensation Plan, Direct Drive Incentive Compensation Plan, 401(k) and ESOP Plan, Retention Program and Warrant Incentive Plan (see descriptions in our 2017 Form 10-K). Total costs incurred under these plans were $67.3 million and $182.2 million for the three and nine months endedSeptember 30, 2018, respectively, compared to $45.9 million and $133.3 million for the comparable 2017 periods. These amounts are included in total compensation and benefits expense discussed above.

Professional Services

Professional services expense was $36.5 million and $112.1 million for the three and nine months endedSeptember 30, 2018, respectively, compared to $33.0 million and $86.3 million for the comparable 2017 periods. The increases were primarily related to enhancements in our regulatory, risk and compliance infrastructure to support our momentum as we continue to grow both domestically and globally as well as investments made in projects, systems and technology to support our revenue growth and related initiatives and other operating costs. Professional services expense for the nine months ended September 30, 2018included a $6.0 million write-off for capitalized costs in connection with the Economic Growth, Regulatory Relief and Consumer Protection Act, which includes regulatory reform of the threshold for which certain enhanced prudential standards apply from $50 billion to $250 billion.

Net Occupancy

Net occupancy expense was $13.7 million and $40.6 million for the three and nine months endedSeptember 30, 2018, respectively, compared to $12.7 million and $35.4 million for the comparable 2017 periods. The increases were primarily due to lease renewals at higher costs, reflective of market conditions, and the expansion of certain offices to support our growth.

Business Development and Travel

Business development and travel expense was $12.7 million and $36.0 million for the three and nine months endedSeptember 30, 2018, respectively, compared to $10.3 million and $30.9 million for the comparable 2017 period. The increases were to support expansion initiatives as we continue to grow both domestically and globally.

Other Noninterest Expense

Total other noninterest expense was $18.1 million and $51.6 million for the three and nine months endedSeptember 30, 2018, respectively, compared to $18.1 million and $54.7 millionfor the comparable2017periods. The decrease for the nine months endedSeptember 30, 2018was driven primarily by certain reimbursement incentives received associated with a new vendor agreement signed during the first quarter of 2018.

A summary of other noninterest expense for the three and nine months endedSeptember 30, 2018 and 2017 is as follows:

	Three months ended September 30,						Nine months ended September 30,
(Dollars in thousands)	2018		2017		% Change		2018		2017		% Change
Lending and other client related processing costs	$	5,698	$	6,935	(17.8	)%	$	16,301	$	18,806	(13.3	)%
Data processing services	2,740		2,244		22.1		7,934		7,254		9.4
Telephone	2,269		2,518		(9.9	)	7,025		7,892		(11.0	)
Dues and publications	1,387		883		57.1		3,081		2,355		30.8
Postage and supplies	652		612		6.5		2,133		2,013		6.0
Other	5,393		4,872		10.7		15,171		16,350		(7.2	)
Total other noninterest expense	$	18,139	$	18,064	0.4		$	51,645	$	54,670	(5.5	)

Net Income Attributable to Noncontrolling Interests

Included in net income is income and expense attributable to noncontrolling interests. The relevant amounts allocated to investors in our consolidated subsidiaries, other than us, are reflected under “Net income attributable to noncontrolling interests” on our statements of income.

In the table below, noninterest income consists primarily of net investment gains and losses from our consolidated funds. Noninterest expense is primarily related to management fees paid by our managed funds to SVB Financial’s subsidiaries as the funds’ general partners. A summary of net income attributable to noncontrolling interests for the three and nine months endedSeptember 30, 2018 and 2017 is as follows:

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	Three months ended September 30,								Nine months ended September 30,
(Dollars in thousands)	2018			2017			% Change		2018			2017			% Change
Net interest income (1)	$	(10	)	$	(9	)	11.1	%	$	(29	)	$	(26	)	11.5	%
Noninterest income (1)	(2,749		)	(4,341		)	(36.7	)	(20,127		)	(19,059		)	5.6
Noninterest expense (1)	154			125			23.2		349			517			(32.5	)
Carried interest allocation (2)	(3,943		)	(1,273		)	NM		(9,034		)	(2,650		)	NM
Net income attributable to noncontrolling interests	$	(6,548	)	$	(5,498	)	19.1		$	(28,841	)	$	(21,218	)	35.9

NM—Not meaningful

(1) Represents noncontrolling interests’ share in net interest income, noninterest income or loss and noninterest expense.

(2) Represents the preferred allocation of income (or change in income) earned by us as the general partner of certain consolidated funds.

Three months endedSeptember 30, 2018 and 2017

Net income attributable to noncontrolling interests was $6.5 million for the three months endedSeptember 30, 2018, compared to $5.5 million for the comparable 2017 period. Net income attributable to noncontrolling interests of $6.5 million for the three months endedSeptember 30, 2018 was reflective of $6.6 million in net gains on investment securities (including carried interest allocation) primarily from our managed funds of funds in the portfolio related to net unrealized valuation increases in private company investments held by the funds during the third quarter of 2018. See “Results of Operations—Noninterest Income—Gains on Investment Securities, Net”.

Nine months ended September 30, 2018 and 2017

Net income attributable to noncontrolling interests was $28.8 million for the nine months endedSeptember 30, 2018, compared to $21.2 million for the comparable 2017 period. Net income attributable to noncontrolling interests of $28.8 million for the nine months endedSeptember 30, 2018 was reflective of $29.2 million net gains on investment securities (including carried interest allocation) primarily from our managed funds of funds portfolio due to net unrealized valuation increases in both private and public company investments held by the funds in the portfolio during the nine months ended September 30, 2018. See “Results of Operations—Noninterest Income—Gains on Investment Securities, Net”.

Income Taxes

On December 22, 2017, the TCJ Act was signed into law. The TCJ Act amends the Internal Revenue Code to, among other things, reduce tax rates, and make changes to credits and deductions for individuals and businesses. For businesses, the TCJ Act permanently lowers the Federal corporate tax rate to 21.0 percent from the prior maximum rate of 35.0 percent, effective for tax years including or commencing January 1, 2018.

The Company has also considered the provisions of the TCJ Act related to non-U.S. operations which would potentially impact the Company’s income tax provision. Such provisions include the one-time transition tax (“TT”) on foreign earnings and the new base erosion anti-avoidance tax (“BEAT”). Based on analyses performed by the Company as of September 30, 2018, the impact of both of these provisions continue to have an immaterial impact on the Company’s income tax provision.

Our effective income tax expense rate was 25.8 percent for both the three and nine months ended September 30, 2018, compared to 39.6 percent and 37.1 percent for the comparable 2017 periods, respectively. Our effective tax rate is calculated by dividing income tax expense by the sum of income before income tax expense and the net income attributable to noncontrolling interests.

The reductions in the effective tax rate for the three and nine months ended September 30, 2018 were primarily due to the lower Federal corporate tax rate as a result of the TCJ Act effective January 1, 2018.

The effective tax rate for the three and nine months ended September 30, 2018, included the recognition of tax benefits of $3.0 million and $17.5 million, respectively, compared to $1.3 million and $14.4 million for the comparable 2017 periods due to the adoption of ASU 2016-09 in the first quarter of 2017. The increase in the tax benefits for the three and nine months ended September 30, 2018 compared to the comparable 2017 periods were partially offset by the reduction in the Federal corporate tax rate.

The Company has considered the provisions of the TCJ Act and analyzed for potential impact to its income tax provision for the fiscal year ending December 31, 2018. Aside from the items noted above, the Company is not aware of any further items which could materially impact its financial statements for the three and nine months ended September 30, 2018.

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Operating Segment Results

We have three segments for which we report our financial information: Global Commercial Bank, SVB Private Bank and SVB Capital.

We report segment information based on the “management” approach, which designates the internal reporting used by management for making decisions and assessing performance as the source of our reporting segments. Please refer to Note 12—“Segment Reporting” of the “Notes to Interim Consolidated Financial Statements (unaudited)” under Part I, Item 1 of this report for additional details.

The following is our reportable segment information for the three and nine months endedSeptember 30, 2018 and 2017:

Global Commercial Bank

	Three months ended September 30,								Nine months ended September 30,
(Dollars in thousands)	2018			2017			% Change		2018			2017			% Change
Net interest income	$	431,036		$	337,860		27.6	%	$	1,209,960		$	924,789		30.8	%
Provision for credit losses	(19,074		)	(20,874		)	(8.6	)	(71,704		)	(65,007		)	10.3
Noninterest income	114,123			97,227			17.4		326,714			260,650			25.3
Noninterest expense	(206,487		)	(178,306		)	15.8		(591,434		)	(528,807		)	11.8
Income before income tax expense	$	319,598		$	235,907		35.5		$	873,536		$	591,625		47.7
Total average loans, net of unearned income	$	22,925,909		$	18,807,616		21.9		$	21,781,557		$	18,125,020		20.2
Total average assets	54,296,808			47,809,890			13.6		52,277,701			45,408,476			15.1
Total average deposits	47,037,693			42,376,024			11.0		45,701,317			40,398,413			13.1

Three months endedSeptember 30, 2018 and 2017

Income before income tax expense from our Global Commercial Bank (“GCB”) increased to $319.6 million for the three months endedSeptember 30, 2018, compared to $235.9 million for the comparable 2017 period, which reflected the continued acquisition of new clients and growth of our core commercial business. The key components of GCB's performance for the three months endedSeptember 30, 2018 compared to the comparable 2017 period are discussed below.

Net interest income from GCB increased by $93.2 million for the three months endedSeptember 30, 2018, due primarily to an increase in loan interest income resulting mainly from higher average loan balances, as well as from an increase in loan yields as a result of rate increases.

GCB had a provision for credit losses of $19.1 million for the three months endedSeptember 30, 2018, compared to $20.9 million for the comparable 2017 period. The provision of $19.1 million for the three months ended September 30, 2018 reflects primarily $12.9 million in additional reserves for period-end loan growth, $9.2 million for charge-offs not specifically reserved for and $9.3 million in net new specific reserves for nonaccrual loans, partially offset by a decrease in the qualitative component of our performing loan reserves of $8.2 million reflective of the continued growth of larger, higher credit quality private equity/venture capital loans as a percentage of total gross loans.

The provision of $20.9 million for the three months endedSeptember 30, 2017 primarily reflected $13.8 million in net new specific reserves for nonaccrual loans and a $10.9 million increase in reserves for period-end loan growth, partially offset by a benefit from improved credit quality from the continued shift in our loan portfolio to private equity/venture capital loans, which tend to be of higher credit quality.

Noninterest income increased by $16.9 million for the three months endedSeptember 30, 2018, related primarily to an overall increase in our non-GAAP core fee income (higher client investment fees, deposit service charges and credit card fees). This increase was due primarily to the continued growth of our client base and work with larger global companies reflective of investments in our platform, capabilities and global reach.

Noninterest expense increased by $28.2 million for the three months endedSeptember 30, 2018, due primarily to increased compensation and benefits. Compensation and benefits expense increased by $27.3 million primarily as a result of increased incentive compensation and ESOP expense, salaries and wages and other employee benefits. The $13.8 million in incentive compensation and ESOP expense is reflective primarily of our strong 2018 full-year expected performance as compared to 2017 as well as an increase in average FTE since the third quarter of 2017. The $12.6 million increase in GCB salaries and wages was due primarily to an increase in the average number of FTEs at GCB, which increased by 224 to 2,102 FTEs for the three months ended September 30, 2018, compared to 1,878 FTEs for the comparable 2017 period.

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Nine months ended September 30, 2018 and 2017

Net interest income from our GCB increased by $285.2 million for the nine months endedSeptember 30, 2018, due primarily to an increase in loan interest income resulting mainly from higher average loan balances as well as from an increase in loan yields as a result of rate increases.

GCB had a provision for credit losses of $71.7 million for the nine months endedSeptember 30, 2018, compared to a provision of $65.0 million for the comparable 2017 period. The provision of $71.7 million for the nine months endedSeptember 30, 2018 was reflective primarily of $39.4 million from period-end loan growth, $34.0 million in net new specific reserves for nonaccrual loans and $24.0 million for charge-offs not specifically reserved for, partially offset by a decrease in reserves of $20.7 million for our performing loans from certain reserve methodology enhancements made to our qualitative reserve for large loan exposure as a result of growth within our higher credit quality private equity/venture capital loan portfolios.

The provision of $65.0 million for the nine months ended September 30, 2017 was reflective primarily of $51.9 million in net new specific reserves for nonaccrual loans and $20.9 million from period-end loan growth, partially offset by a benefit from the overall improved credit quality of our loan portfolio and the continued shift in our loan portfolio to private equity/venture capital loans, which tend to be of higher credit quality.

Noninterest income increased by $66.1 million for the nine months endedSeptember 30, 2018, related primarily to an overall increase in our non-GAAP core fee income (higher foreign exchange fees, client investment fees and credit card fees). This increase was due primarily to the continued growth of our client base and work with larger global companies reflective of investments in our platform, capabilities and global reach.

Noninterest expense increased by $62.6 million for the nine months endedSeptember 30, 2018, due primarily to increased expenses for compensation and benefits. Compensation and benefits expense increased by $61.1 million primarily as a result of increased incentive compensation and ESOP expense, salaries and wages and other employee benefits. The $34.1 million increase in incentive compensation and ESOP expense is reflective primarily of our strong 2018 full-year expected performance as compared to 2017 as well as an increase in average FTE since the third quarter of 2017. The $23.1 million increase in GCB salaries and wages was due primarily to an increase in the average number of FTEs at GCB, which increased by 146 to 2,001 FTEs for the nine months ended September 30, 2018, compared to 1,855 FTEs for the comparable 2017 period. The increase in total other employee benefits was related to various expenses, particularly employer payroll taxes reflective of the increase in the number of average FTE.

SVB Private Bank

	Three months ended September 30,								Nine months ended September 30,
(Dollars in thousands)	2018			2017			% Change		2018			2017			% Change
Net interest income	$	14,919		$	14,600		2.2	%	$	46,811		$	42,952		9.0	%
Provision for credit losses	(362		)	(1,535		)	(76.4	)	(2,384		)	(2,266		)	5.2
Noninterest income	605			460			31.5		1,677			1,715			(2.2	)
Noninterest expense	(6,760		)	(4,706		)	43.6		(18,729		)	(12,675		)	47.8
Income before income tax expense	$	8,402		$	8,819		(4.7	)	$	27,375		$	29,726		(7.9	)
Total average loans, net of unearned income	$	2,928,576		$	2,499,507		17.2		$	2,791,910		$	2,371,027		17.8
Total average assets	2,538,662			2,538,400			—		2,548,184			2,403,777			6.0
Total average deposits	1,505,746			1,231,390			22.3		1,519,200			1,289,990			17.8

Three months endedSeptember 30, 2018 and 2017

Net interest income from our SVB Private Bank increased by $0.3 million for the three months endedSeptember 30, 2018, reflective primarily of higher interest income due to loan growth, partially offset by a higher funding charge for loans funded.

Noninterest expense increased by $2.1 million for the three months endedSeptember 30, 2018, due primarily to increased compensation and benefits expense. Compensation and benefits expense increased as a result of increased salaries and wages, reflective of the increase in number of average FTE since the third quarter of 2017, and higher incentive compensation expenses, reflective primarily of our strong 2018 full-year expected performance as compared to 2017.

Nine months endedSeptember 30, 2018 and 2017

Net interest income from our SVB Private Bank increased by $3.9 million for the nine months endedSeptember 30, 2018, reflective primarily of higher interest income due to loan growth, partially offset by a higher funding charge for loans funded.

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SVB Private Bank had a provision for credit losses of $2.4 million for the nine months endedSeptember 30, 2018, compared to $2.3 million for the comparable 2017 period. The provisions for both the nine months endedSeptember 30, 2018 and 2017 were due primarily to reserves for period-end loan growth.

Noninterest expense increased by $6.1 million for the nine months endedSeptember 30, 2018, due primarily to increased compensation and benefits expense. Compensation and benefits expense increased as a result of increased salaries and wages, reflective primarily of the increase in the number of average FTE since the third quarter 2017, and higher incentive compensation expenses, reflective primarily of our strong 2018 full-year expected performance as compared to 2017.

SVB Capital

	Three months ended September 30,								Nine months ended September 30,
(Dollars in thousands)	2018			2017			% Change		2018			2017			% Change
Net interest income	$	6		$	15		(60.0	)%	$	22		$	41		(46.3	)%
Noninterest income	24,423			13,913			75.5		81,832			45,707			79.0
Noninterest expense	(6,469		)	(4,873		)	32.8		(17,182		)	(14,537		)	18.2
Income before income tax expense	$	17,960		$	9,055		98.3		$	64,672		$	31,211		107.2
Total average assets	$	388,531		$	323,417		20.1		$	379,809		$	333,439		13.9

SVB Capital’s components of noninterest income primarily include net gains and losses on non-marketable and other equity securities, carried interest and fund management fees. All components of income before income tax expense and average assets discussed below are net of noncontrolling interests.

We experience variability in the performance of SVB Capital from quarter to quarter due to a number of factors, including changes in the values of our funds’ underlying investments, changes in the amount of distributions and general economic and market conditions. Such variability may lead to volatility in the gains and losses from investment securities and cause our results to differ from period to period.

Three months endedSeptember 30, 2018 and 2017

SVB Capital had noninterest income of $24.4 million for the three months ended September 30, 2018, compared to $13.9 million for the comparable 2017 period. The increase in noninterest income was due primarily to higher net gains on investment securities compared to the comparable 2017 period. SVB Capital’s components of noninterest income primarily include the following:

• Net gains on investment securities of $17.8 million for the three months ended September 30, 2018, compared to net gains of $8.1 million for the comparable 2017 period. The net gains on investment securities of $17.8 million were related to gains from our strategic venture capital fund investments reflective of net unrealized valuation increases in private company investments held in our strategic venture capital funds and net unrealized valuation increases in the private company investments held by our managed funds of funds, and

• Fund management fees of $5.5 million compared to $5.2 million for the comparable 2017 period.

Nine months endedSeptember 30, 2018 and 2017

SVB Capital had noninterest income of $81.8 million for the nine months endedSeptember 30, 2018, compared to $45.7 million for the comparable 2017 period. The increase in noninterest income was due primarily to higher net gains on investment securities compared to the comparable 2017 period. SVB Capital’s components of noninterest income primarily include the following:

• Net gains on investment securities of $61.6 million for the nine months endedSeptember 30, 2018, compared to net gains of $28.2 million for the comparable 2017 period. The net gains on investment securities of $61.6 million were related to gains from our strategic venture capital fund investments reflective of net unrealized valuation increases in both private and public company investments held in our strategic venture capital funds and net unrealized valuation increases in both private and public company investments held by our managed funds of funds, and

• Fund management fees of $17.1 million compared to $15.9 million for the comparable 2017 period.

Consolidated Financial Condition

Our total assets, and total liabilities and stockholders' equity, were $58.1 billion at September 30, 2018 compared to $51.2 billion at December 31, 2017, an increase of $6.9 billion, or 13.5 percent. Refer below to a summary of the individual components driving the changes in total assets, total liabilities and stockholders' equity.

Cash and Cash Equivalents

Cash and cash equivalents totaled $3.8 billion at September 30, 2018, an increase of $0.9 billion, or 30.7 percent, compared to $2.9 billion at December 31, 2017. As of September 30, 2018, $2.1 billion of our cash and due from banks was deposited at the Federal Reserve Bank and was earning interest at the Federal Funds target rate, and interest-earning deposits in other financial institutions were $1.1 billion. As of December 31, 2017, $0.6 billion of our cash and due from banks was deposited at the Federal Reserve Bank and was earning interest at the Federal Funds target rate, and interest-earning deposits in other financial institutions were $1.1 billion.

Investment Securities

Investment securities totaled $25.9 billion at September 30, 2018, an increase of $1.5 billion, or 5.9 percent, compared to $24.4 billion at December 31, 2017. Our investment securities portfolio is comprised of: (i) an available-for-sale securities portfolio and a held-to-maturity securities portfolio, both of which represent interest earning fixed income investment securities; and (ii) a non-marketable and other equity securities portfolio, which represents primarily investments managed as part of our funds management business as well as public equity securities held as a result of equity warrant assets exercised.

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Available-for-Sale Securities

Period-end available-for-sale securities were $9.1 billion at September 30, 2018 compared to $11.1 billion at December 31, 2017, a decrease of $2.0 billion, or 18.3 percent. The $2.0 billion decrease in period-end AFS securities balances from December 31, 2017 to September 30, 2018, was due primarily to $2.5 billion in portfolio paydowns and maturities partially offset by purchases of $0.7 billion. Securities classified as available-for-sale are carried at fair value with changes in fair value recorded as unrealized gains or losses in a separate component of stockholders' equity. At September 30, 2018 the AFS portfolio had unrealized losses of $98.0 million ($70.8 million net of tax), primarily driven by increases in period-end market interest rates.

The following table summarizes the remaining contractual principal maturities and fully taxable equivalent yields on fixed income securities, carried at fair value, classified as available-for-sale as of September 30, 2018. The weighted average yield is computed using the amortized cost of fixed income investment securities, which are reported at fair value. For U.S. Treasury securities and U.S. agency debentures, the expected maturity is the actual contractual maturity of the notes. Expected remaining maturities for certain U.S. agency debentures may occur earlier than their contractual maturities because the note issuers have the right to call outstanding amounts ahead of their contractual maturity. Expected maturities for mortgage-backed securities may differ significantly from their contractual maturities because mortgage borrowers have the right to prepay outstanding loan obligations with or without penalties. Mortgage-backed securities classified as available-for-sale typically have original contractual maturities from 10 to 30 years whereas expected average lives of these securities tend to be significantly shorter and vary based upon structure and prepayments in lower interest rate environments. The weighted average yield on mortgage-backed securities is based on prepayment assumptions at the purchase date. Actual yields earned may differ significantly based upon actual prepayments.

	September 30, 2018
	Total				One Year or Less				After One Year to Five Years				After Five Years to Ten Years				After Ten Years
(Dollars in thousands)	Carrying Value		Weighted Average Yield		Carrying Value		Weighted Average Yield		Carrying Value		Weighted Average Yield		Carrying Value		Weighted Average Yield		Carrying Value		Weighted Average Yield
U.S. Treasury securities	$	5,501,874	1.75	%	$	2,016,438	1.43	%	$	3,047,620	1.80	%	$	437,816	2.95	%	$	—	—	%
U.S. agency debentures	1,346,672		1.77		653,271		1.51		693,401		2.01		—		—		—		—
Residential mortgage-backed securities:
Agency-issued collateralized mortgage obligations—fixed rate	1,920,541		2.59		—		—		—		—		29,113		2.63		1,891,428		2.58
Agency-issued collateralized mortgage obligations—variable rate	318,522		0.71		—		—		—		—		—				318,522		0.71
Total	$	9,087,609	1.90		$	2,669,709	1.45		$	3,741,021	1.84		$	466,929	2.93		$	2,209,950	2.31

Held-to-Maturity Securities

Period-end held-to-maturity securities were $15.9 billion at September 30, 2018 compared to $12.7 billion at December 31, 2017, an increase of $3.2 billion, or 25.6 percent. The $3.2 billion increase in period-end HTM security balances from December 31, 2017 to September 30, 2018 was due to new purchases of $4.7 billion, with $3.9 billion of agency backed mortgage securities purchases and $0.8 billion of municipal bond purchases, partially offset by $1.5 billion in portfolio paydowns and maturities.

Securities classified as held-to-maturity are accounted for at cost with no adjustments for changes in fair value. For securities previously re-designated as held-to-maturity from available-for-sale, the net unrealized gains at the date of transfer will continue to be reported as a separate component of shareholders' equity and amortized over the life of the securities in a manner consistent with the amortization of a premium or discount.

The following table summarizes the remaining contractual principal maturities and fully taxable equivalent yields on fixed income investment securities classified as held-to-maturity as of September 30, 2018. Interest income on certain municipal bonds and notes (non-taxable investments) are presented on a fully taxable equivalent basis using the federal statutory tax rate of 21.0 percent. The weighted average yield is computed using the amortized cost of fixed income investment securities. For U.S. agency debentures, the expected maturity is the actual contractual maturity of the notes. Expected maturities for mortgage-backed securities may differ significantly from their

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contractual maturities because mortgage borrowers have the right to prepay outstanding loan obligations with or without penalties. Mortgage-backed securities classified as held-to-maturity typically have original contractual maturities from 10 to 30 years whereas expected average lives of these securities tend to be significantly shorter and vary based upon structure and prepayments in lower interest rate environments. The weighted average yield on mortgage-backed securities is based on prepayment assumptions at the purchase date. Actual yields earned may differ significantly based upon actual prepayments.

	September 30, 2018
	Total				One Year or Less				After One Year to Five Years				After Five Years to Ten Years				After Ten Years
(Dollars in thousands)	Amortized Cost		Weighted- Average Yield		Amortized Cost		Weighted- Average Yield		Amortized Cost		Weighted- Average Yield		Amortized Cost		Weighted- Average Yield		Amortized Cost		Weighted- Average Yield
U.S. agency debentures	$	641,134	2.65	%	$	—	—	%	$	104,550	2.63	%	$	536,584	2.66	%	$	—	—	%
Residential mortgage-backed securities:
Agency-issued mortgage-backed securities	8,333,088		2.88		—				179,847		2.07		859,233		2.48		7,294,008		2.94
Agency-issued collateralized mortgage obligations—fixed rate	2,329,065		1.78		—		—		—		—		474,668		1.56		1,854,397		1.84
Agency-issued collateralized mortgage obligations—variable rate	223,374		0.74		—		—		—		—		—		—		223,374		0.74
Agency-issued commercial mortgage-backed securities	2,795,952		2.98		—		—		—		—		—		—		2,795,952		2.98
Municipal bonds and notes	1,577,113		3.60		8,376		3.16		74,518		2.05		256,453		2.64		1,237,766		3.90
Total	$	15,899,726	2.77		$	8,376	3.16		$	358,915	2.23		$	2,126,938	2.34		$	13,405,497	2.85

Portfolio duration is a standard measure used to approximate changes in the market value of fixed income instruments due to a change in market interest rates. The measure is an estimate based on the level of current market interest rates, expectations for changes in the path of forward rates and the effect of forward rates on mortgage prepayment speed assumptions. As such, portfolio duration will fluctuate with changes in market interest rates. Changes in portfolio duration are also impacted by changes in the mix of longer versus shorter term-to-maturity securities. Our estimated fixed income investment securities portfolio weighted-average duration was 3.9 years and 3.0 years at September 30, 2018 and December 31, 2017, respectively.

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Non-Marketable and Other Equity Securities

Our non-marketable and other equity securities portfolio primarily represents investments in venture capital and private equity funds, SPD Silicon Valley Bank Co., Ltd. (the Bank's joint venture bank in China (“SPD-SVB”)), debt funds, private and public portfolio companies, including public equity securities held as a result of equity warrant assets exercised, and investments in qualified affordable housing projects. Included in our non-marketable and other equity securities carried under fair value accounting are amounts that are attributable to noncontrolling interests. We are required under GAAP to consolidate 100% of these investments that we are deemed to control, even though we may own less than 100% of such entities. See below for a summary of the carrying value (as reported) of non-marketable and other securities compared to the amounts attributable to SVBFG.

Period-end non-marketable and other equity securities were $896.2 million at September 30, 2018 compared to $651.1 million at December 31, 2017, an increase of $245.1 million, or 37.7 percent. Non-marketable and other equity securities, net of noncontrolling interests were $765.3 million at September 30, 2018, compared to $530.6 million at December 31, 2017. The increase was mostly attributable to accounting changes related to the adoption of ASU 2016-01, Recognition and Measurement of Financial Assets and Financial Liabilities, which requires equity investments (except those accounted for under the equity method of accounting) to be measured at fair value and eliminated the cost method of accounting. As part of this adoption, we recorded an adjustment to opening retained earnings for cost method investments measured at NAV and increased the carrying value of our unconsolidated venture capital and private equity fund investments. We also increased our investments in qualified affordable housing projects by $87.5 million for additional tax benefits as part of our strategy to reduce our effective tax rate. An additional increase in our other equity securities of $30.2 million was attributable to exercised equity warrant assets.The following table summarizes the carrying value (as reported) of non-marketable and other securities compared to the amounts attributable to SVBFG (which generally represents the carrying value times our ownership percentage) at September 30, 2018 and December 31, 2017:

	September 30, 2018				December 31, 2017
(Dollars in thousands)	Carrying value (as reported)		Amount attributable to SVBFG		Carrying value (as reported)		Amount attributable to SVBFG
Non-marketable and other equity securities (fair value accounting):
Consolidated venture capital and private equity fund investments (1)	$	126,467	$	32,609	$	128,111	$	33,044
Unconsolidated venture capital and private equity fund investments (2)	208,953		208,953		98,548		98,548
Other investments without a readily determinable fair value (3)	25,253		25,253		27,680		27,680
Other equity securities in public companies (4)	30,460		29,825		310		103
Non-marketable securities (equity method accounting) (5):
Venture capital and private equity fund investments	112,537		76,035		89,809		64,675
Debt funds	5,241		5,241		21,183		21,183
Other investments	125,632		125,632		111,198		111,198
Investments in qualified affordable housing projects, net	261,706		261,706		174,214		174,214
Total non-marketable and other equity securities	$	896,249	$	765,254	$	651,053	$	530,645

(1) The following table shows the amounts of venture capital and private equity fund investments held by the following consolidated funds and amounts attributable to SVBFG for each fund at September 30, 2018 and December 31, 2017:

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	September 30, 2018				December 31, 2017
(Dollars in thousands)	Carrying value (as reported)		Amount attributable to SVBFG		Carrying value (as reported)		Amount attributable to SVBFG
Strategic Investors Fund, LP	$	12,733	$	1,599	$	14,673	$	1,843
Capital Preferred Return Fund, LP	56,453		12,167		54,147		11,670
Growth Partners, LP	56,280		18,736		58,372		19,432
CP I, LP	1,001		107		919		99
Total consolidated venture capital and private equity fund investments	$	126,467	$	32,609	$	128,111	$	33,044

(2) The carrying value represents investments in 220 and 235 funds (primarily venture capital funds) at September 30, 2018 and December 31, 2017, respectively, where our ownership interest is typically less than 5% of the voting interests of each such fund and in which we do not have the ability to exercise significant influence over the partnerships' operating activities and financial policies. Effective January 1, 2018, we adopted ASU 2016-01, Recognition and Measurement of Financial Assets and Financial Liabilities which eliminated the concept of cost method accounting. On a prospective basis, we will carry our unconsolidated venture capital and private equity fund investments at fair value based on the fund investments' net asset values per share as obtained from the general partners of the funds. We will adjust the net asset value per share for differences between our measurement date and the date of the fund investment’s net asset value by using the most recently available financial information from the investee general partner, for example, June 30^th, for our September 30^th consolidated financial statements, adjusted for any contributions paid, distributions received from the investment, and significant fund transactions or market events during the reporting period. We recorded a cumulative adjustment to opening retained earnings on January 1, 2018 for the difference between fair value and cost for these fund investments. The estimated fair value and carrying value of these venture capital and private equity fund investments was $209.0 million as of September 30, 2018. As of December 31, 2017, these investments were carried at cost and had a carrying value of $98.5 million.

(3) Effective January 1, 2018, we adopted ASU 2016-01, Recognition and Measurement of Financial Assets and Financial Liabilities which eliminated the concept of cost method accounting. On a prospective basis, we will report our other investments in the line item "Other investments without a readily determinable fair value." These investments include direct equity investments in private companies. The carrying value is based on the price at which the investment was acquired plus or minus changes resulting from observable price changes in orderly transactions for identical or similar investments. We consider a range of factors when adjusting the fair value of these investments, including, but not limited to, the term and nature of the investment, local market conditions, values for comparable securities, current and projected operating performance, exit strategies, financing transactions subsequent to the acquisition of the investment and a discount for certain investments that have lock-up restrictions or other features that indicate a discount to fair value is warranted. For further details on the carrying value of these investments refer to Note 6—“Investment Securities" of the “Notes to Interim Consolidated Financial Statements (unaudited)” under Part I, Item 1 of this report.

(4) Investments classified as other equity securities (fair value accounting) represent shares held in public companies as a result of exercising public equity warrant assets and direct equity investments in public companies held by our consolidated funds. Effective January 1, 2018, we adopted ASU 2016-01, Recognition and Measurement of Financial Assets and Financial Liabilities which requires equity securities to be measured at fair value with changes in the fair value recognized through net income. Prior to January 1, 2018, we reported equity securities in public companies that we held as a result of exercising public equity warrant assets in available-for-sale securities. On a prospective basis, these equity securities will be reported in non-marketable and other equity securities.

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(5) The following table shows the carrying value and amount attributable to SVBFG of each investment at September 30, 2018 and December 31, 2017 (equity method accounting):

	September 30, 2018				December 31, 2017
(Dollars in thousands)	Carrying value (as reported)		Amount attributable to SVBFG		Carrying value (as reported)		Amount attributable to SVBFG
Venture capital and private equity fund investments:
Strategic Investors Fund II, LP	$	4,739	$	4,436	$	6,342	$	5,971
Strategic Investors Fund III, LP	18,176		14,703		18,758		15,211
Strategic Investors Fund IV, LP	29,445		24,815		25,551		21,739
Strategic Investors Fund V, LP	24,245		12,729		16,856		8,849
CP II, LP (i)	6,865		4,153		6,700		4,056
Other venture capital and private equity fund investments	29,067		15,199		15,602		8,849
Total venture capital and private equity fund investments	$	112,537	$	76,035	$	89,809	$	64,675
Debt funds:
Gold Hill Capital 2008, LP (ii)	$	3,267	$	3,267	$	18,690	$	18,690
Other debt funds	1,974		1,974		2,493		2,493
Total debt funds	$	5,241	$	5,241	$	21,183	$	21,183
Other investments:
SPD Silicon Valley Bank Co., Ltd.	$	75,314	$	75,314	$	75,337	$	75,337
Other investments	50,318		50,318		35,861		35,861
Total other investments	$	125,632	$	125,632	$	111,198	$	111,198

(i) Our ownership includes direct ownership interest of 1.3 percent and indirect ownership interest of 3.8 percent through our investments in Strategic Investors Fund II, LP.

(ii) Our ownership includes direct ownership interest of 11.5 percent in the fund and an indirect interest in the fund through our investment in Gold Hill Capital 2008, LLC of 4.0 percent.

Volcker Rule

On June 6, 2017, we received notice that the Board of Governors of the Federal Reserve System approved the Company’s application for an extension of the permitted conformance period for the Company’s investments in “illiquid” covered funds. The approval extends the deadline by which the Company must sell, divest, restructure or otherwise conform such investments to the provisions of the Volcker Rule until the earlier of (i) July 21, 2022, or (ii) the date by which each fund matures by its terms or is otherwise conformed to the Volcker Rule.

As implemented under the Dodd-Frank Wall Street Reform and Consumer Protection Act, the Volcker Rule prohibits, subject to certain exceptions, a banking entity, such as the Company, from sponsoring or investing in covered funds, defined to include many venture capital and private equity funds.  As noted above, the Company currently maintains certain investments deemed to be prohibited investments in “illiquid” covered funds, which are now covered under the approved extension. As of September 30, 2018, such prohibited investments had an estimated aggregate carrying value and fair value of approximately $244 million. (For more information about the Volcker Rule, see “Business—Supervision and Regulation” under Part 1, Item 1 of our 2017 Form 10-K.)

Loans

Loans, net of unearned income increased by $4.4 billion to $27.5 billion at September 30, 2018, compared to $23.1 billion at December 31, 2017. Unearned income was $174 million at September 30, 2018 and $148 million at December 31, 2017. Total gross loans were $27.7 billion at September 30, 2018, an increase of $4.4 billion, compared to $23.3 billion at December 31, 2017. Period-end loans increased compared to December 31, 2017, driven primarily by loan growth in our private equity/venture capital portfolio as well as from our life science/healthcare and private bank loan portfolios.

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The breakdown of total gross loans and total loans as a percentage of total gross loans by industry sector is as follows:

	September 30, 2018				December 31, 2017
(Dollars in thousands)	Amount		Percentage		Amount		Percentage
Commercial loans:
Software/internet	$	6,317,315	22.8	%	$	6,232,725	26.8	%
Hardware	1,318,485		4.8		1,200,900		5.2
Private equity/venture capital	13,369,035		48.3		9,961,121		42.8
Life science/healthcare	2,377,470		8.6		1,867,960		8.0
Premium wine	227,499		0.8		204,257		0.9
Other	277,935		1.0		379,431		1.6
Total commercial loans	23,887,739		86.3		19,846,394		85.3
Real estate secured loans:
Premium wine	686,767		2.5		670,112		2.9
Consumer	2,553,651		9.2		2,297,857		9.9
Other	41,076		0.2		42,230		0.2
Total real estate secured loans	3,281,494		11.9		3,010,199		13.0
Construction loans	81,903		0.3		69,108		0.3
Consumer loans	417,693		1.5		328,452		1.4
Total gross loans	$	27,668,829	100.0		$	23,254,153	100.0

Loan Concentration

The following table provides a summary of gross loans by size and category. The breakout of the categories is based on total client balances (individually or in the aggregate) as of September 30, 2018:

	September 30, 2018
(Dollars in thousands)	Less than Five Million		Five to Ten Million		Ten to Twenty Million		Twenty to Thirty Million		Thirty Million or More		Total
Commercial loans:
Software/internet	$	1,549,823	$	984,569	$	1,445,166	$	1,203,498	$	1,134,259	$	6,317,315
Hardware	277,212		137,525		231,975		336,541		335,232		1,318,485
Private equity/venture capital	862,227		886,378		2,091,534		1,736,999		7,791,897		13,369,035
Life science/healthcare	312,183		465,959		666,370		487,927		445,031		2,377,470
Premium wine	69,924		36,872		32,684		88,019		—		227,499
Other	157,784		33,854		30,311		21,340		34,646		277,935
Commercial loans	3,229,153		2,545,157		4,498,040		3,874,324		9,741,065		23,887,739
Real estate secured loans:
Premium wine	175,242		166,931		238,458		106,136		—		686,767
Consumer	2,196,637		256,347		100,667		—		—		2,553,651
Other	7,571		—		33,505		—		—		41,076
Real estate secured loans	2,379,450		423,278		372,630		106,136		—		3,281,494
Construction loans	5,360		39,263		37,280		—		—		81,903
Consumer loans	145,207		42,191		23,279		133,596		73,420		417,693
Total gross loans	$	5,759,170	$	3,049,889	$	4,931,229	$	4,114,056	$	9,814,485	$	27,668,829

At September 30, 2018, gross loans equal to or greater than $20 million to any single client (individually or in the aggregate) totaled $13.9 billion, or 50.3 percent of our total gross loan portfolio. These loans represented 347 clients, and of these loans, $27.9 millionwere on nonaccrual status as of September 30, 2018.

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The following table provides a summary of gross loans by size and category. The breakout of the categories is based on total client balances (individually or in the aggregate) as of December 31, 2017:

	December 31, 2017
(Dollars in thousands)	Less than Five Million		Five to Ten Million		Ten to Twenty Million		Twenty to Thirty Million		Thirty Million or More		Total
Commercial loans:
Software/internet	$	1,558,717	$	974,959	$	1,545,194	$	1,190,247	$	963,608	$	6,232,725
Hardware	258,586		138,254		253,978		217,425		332,657		1,200,900
Private equity/venture capital	697,427		807,596		1,617,121		1,142,818		5,696,159		9,961,121
Life science/healthcare	321,738		450,445		576,926		313,656		205,195		1,867,960
Premium wine	60,663		37,845		64,062		32,423		9,264		204,257
Other	149,825		23,096		103,989		25,599		76,922		379,431
Commercial loans	3,046,956		2,432,195		4,161,270		2,922,168		7,283,805		19,846,394
Real estate secured loans:
Premium wine	150,563		187,272		220,062		89,561		22,654		670,112
Consumer loans	1,989,973		224,825		83,059		—		—		2,297,857
Other	7,763		—		14,134		20,333		—		42,230
Real estate secured loans	2,148,299		412,097		317,255		109,894		22,654		3,010,199
Construction loans	12,178		34,029		—		22,901		—		69,108
Consumer loans	146,395		49,921		17,120		78,742		36,274		328,452
Total gross loans	$	5,353,828	$	2,928,242	$	4,495,645	$	3,133,705	$	7,342,733	$	23,254,153

At December 31, 2017, gross loans equal to or greater than $20 million to any single client (individually or in the aggregate) totaled $10.5 billion, or 45.1 percent of our total gross loan portfolio. These loans represented 277 clients, and of these loans, $52.1 million were on nonaccrual status as of December 31, 2017.

The credit profile of our loan portfolio clients varies based on the nature of the lending we do for different market segments. Our three main market segments include (i) technology (software/internet and hardware) and life science/healthcare, (ii) private equity/venture capital, and (iii) SVB Private Bank.

(i) Technology and Life Science/Healthcare

Our technology and life science/healthcare loan portfolios include loans to clients at all stages of their life cycles and represent the largest segments of our loan portfolio. The primary underwriting method for our technology and life science/healthcare portfolios are classified as investor dependent, balance sheet dependent or cash flow dependent.

Investor dependent loans represent a relatively small percentage of our overall portfolio at 11 percent of total gross loans at both September 30, 2018 and December 31, 2017. These loans are made to companies in both our Accelerator (early-stage) and Growth practices. Investor dependent loans typically have modest or negative cash flows and no established record of profitable operations. Repayment of these loans may be dependent upon receipt by borrowers of additional equity financing from venture capital firms or others, or in some cases, a successful sale to a third party or an IPO. Venture capital firms may provide financing selectively, at reduced amounts, or on less favorable terms, which may have an adverse effect on our borrowers' ability to repay their loans to us. When repayment is dependent upon the next round of venture investment and there is an indication that further investment is unlikely or will not occur, it is often likely that the company would need to be sold to repay the debt in full. If reasonable efforts have not yielded a likely buyer willing to repay all debt at the close of the sale or on commercially viable terms, the account will most likely be deemed to be impaired.

Balance sheet dependent loans, which includes asset-based loans, represented 9 percent of total gross loans at September 30, 2018 compared to 10 percent at December 31, 2017. Balance sheet dependent loans are structured to require constant current asset coverage (i.e., cash, cash equivalents, accounts receivable and, to a much lesser extent, inventory) in an amount that exceeds the outstanding debt. These loans are generally made to companies in our Growth and Corporate Finance practices. Our asset-based lending, which includes working capital lines and accounts receivable financing, represented three and one percent of total gross loans as of September 30, 2018, respectively, and both represented three percent of total gross loans at December 31, 2017. The repayment of these arrangements is dependent on the financial condition, and payment ability, of third parties with whom our clients do business.

Cash flow dependent loans, which include sponsored buyout lending, represented 17 percent of total gross loans at September 30, 2018, compared to 19 percent at December 31, 2017. Cash flow dependent loans require the borrower to maintain cash flow from operations that is sufficient to service all debt. Borrowers must demonstrate normalized cash flow

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in excess of all fixed charges associated with operating the business. Sponsored buyout loans represented eight percent of total gross loans at September 30, 2018 compared to nine percent at December 31, 2017. These loans are typically used to assist a select group of experienced private equity sponsors with the acquisition of businesses, are larger in size, and repayment is generally dependent upon the cash flows of the acquired company. The acquired companies are typically established, later-stage businesses of scale and characterized by reasonable levels of leverage and loan structures that include meaningful financial covenants. The sponsor's equity contribution is often 50 percent or more of the acquisition price.

(ii) Private Equity/Venture Capital

We also provide financial services to clients in the private equity/venture capital community. At September 30, 2018, our lending to private equity/venture capital firms and funds represented 48 percent of total gross loans, compared to 43 percent of total gross loans at December 31, 2017. The vast majority of this portfolio consists of capital call lines of credit, the repayment of which is dependent on the payment of capital calls by the underlying limited partner investors in the funds managed by these firms. These facilities are generally governed by meaningful financial covenants oriented towards ensuring that the funds' remaining callable capital is sufficient to repay the loan, and larger commitments (typically provided to larger private equity funds) are often secured by an assignment of the general partner's right to call capital from the fund's limited partner investors.

(iii) SVB Private Bank

Our SVB Private Bank clients are primarily private equity/venture capital professionals and executive leaders of the innovation companies they support. Our lending to SVB Private Bank clients represented 11 percent of total gross loans at both September 30, 2018 and December 31, 2017. Many of these clients have mortgages, which represented 86 percent of this portfolio at September 30, 2018; the balance of this portfolio consisted of home equity lines of credit, restricted stock purchase loans, capital call lines of credit, and other secured and unsecured lending.

State Concentrations

Approximately 29 percent and 10 percent of our outstanding total gross loan balances as of September 30, 2018 were to borrowers based in California and New York, respectively, compared to 31 percent and 10 percent as of December 31, 2017. Additionally, as of September 30, 2018, borrowers in Massachusetts increased to 10 percent of our outstanding gross loan balances compared to 8 percent as of December 31, 2017. Other than California, New York and Massachusetts, there are no states with gross loan balances greater than or equal to 10 percent.

See generally “Risk Factors–Credit Risks” set forth under Part I, Item 1A in our 2017 Form 10-K.

Credit Quality Indicators

As of September 30, 2018 and December 31, 2017, our total criticized loans and impaired loans both represented four percent of our total gross loans. Criticized and impaired loans to early-stage clients represented 18 percent and 22 percent of our total criticized and impaired loan balances at September 30, 2018 and December 31, 2017, respectively. Loans to early-stage clients represent a relatively small percentage of our overall portfolio at six percent of total gross loans at September 30, 2018. It is common for an early-stage client’s remaining liquidity to fall temporarily below the threshold for a pass-rated credit during its capital-raising period for a new round of funding. Based on our experience, for most early-stage clients, this situation typically lasts one to two quarters and generally resolves itself with a subsequent round of venture funding, though there are exceptions, from time to time. As a result, we expect that each of our early-stage clients will reside in our criticized portfolio during a portion of their life cycle.

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Credit Quality and Allowance for Loan Losses

Nonperforming assets consist of loans on nonaccrual status, loans past due 90 days or more still accruing interest, and Other Real Estate Owned (“OREO”) and other foreclosed assets. We measure all loans placed on nonaccrual status for impairment based on the fair value of the underlying collateral or the net present value of the expected cash flows. The table below sets forth certain data and ratios between nonperforming loans, nonperforming assets and the allowance for loan losses:

(Dollars in thousands)	September 30, 2018			December 31, 2017
Gross nonaccrual, past due, and restructured loans:
Nonaccrual loans	$	115,162		$	119,259
Loans past due 90 days or more still accruing interest	163			191
Total nonperforming loans	115,325			119,450
OREO and other foreclosed assets	—			—
Total nonperforming assets	$	115,325		$	119,450
Performing TDRs	$	15,397		$	71,468
Nonperforming loans as a percentage of total gross loans	0.42		%	0.51		%
Nonperforming assets as a percentage of total assets	0.20			0.23
Allowance for loan losses	$	285,713		$	255,024
As a percentage of total gross loans	1.03		%	1.10		%
As a percentage of total gross nonperforming loans	247.75			213.50
Allowance for loan losses for nonaccrual loans	$	49,992		$	41,793
As a percentage of total gross loans	0.18		%	0.18		%
As a percentage of total gross nonperforming loans	43.35			34.99
Allowance for loan losses for total gross performing loans	$	235,721		$	213,231
As a percentage of total gross loans	0.85		%	0.92		%
As a percentage of total gross performing loans	0.86			0.92
Total gross loans	$	27,668,829		$	23,254,153
Total gross performing loans	27,553,504			23,134,703
Allowance for unfunded credit commitments (1)	51,808			51,770
As a percentage of total unfunded credit commitments	0.28		%	0.30		%
Total unfunded credit commitments (2)	$	18,539,514		$	17,462,537

(1) The “allowance for unfunded credit commitments” is included as a component of other liabilities and any provision is included in the “provision for credit losses” in the statement of income. See “Provision for credit losses” for a discussion of the changes to the allowance.

(2) Includes unfunded loan commitments and letters of credit.

Our allowance for loan losses as a percentage of total gross loans decreased 7 basis points to 1.03 percent at September 30, 2018, compared to 1.10 percent at December 31, 2017 reflective of a decrease in reserves for performing loans of 7 basis points.

Our allowance for loan losses for performing loans was $235.7 million at September 30, 2018, compared to $213.2 million at December 31, 2017. The $22.5 million increase in reserves for performing loans was reflective primarily of an increase in reserves of $39.4 million for period-end loan growth of $4.4 billion, partially offset by a decrease in reserves of $20.7 million for our performing loans from certain reserve methodology enhancements made to our qualitative reserve for large loan exposure as a result of growth within our higher credit quality private equity/venture capital loan portfolio.

Our allowance for loan losses for nonaccrual loans was $50.0 million at September 30, 2018, compared to $41.8 million at December 31, 2017. The $8.2 million increase in the allowance for nonaccrual loans included $50.4 million of new nonaccrual loan reserves, offset by $24.0 million of charge-offsand $18.2 million of reserve releases from paydowns. New nonaccrual loan reserves of $50.4 million were mostly attributable to our software/internet loan portfolio.

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The following table presents a summary of changes in nonaccrual loans for the three and nine months endedSeptember 30, 2018 and 2017: 

	Three months ended September 30,						Nine months ended September 30,
(Dollars in thousands)	2018			2017			2018			2017
Balance, beginning of period	$	124,842		$	120,172		$	119,259		$	118,979
Additions	18,346			29,650			69,202			85,990
Paydowns	(14,891		)	(14,183		)	(48,550		)	(43,995		)
Charge-offs	(13,135		)	(10,967		)	(24,714		)	(36,299		)
Other reductions	—			—			(35		)	(3		)
Balance, end of period	$	115,162		$	124,672		$	115,162		$	124,672

Our nonaccrual loans as of September 30, 2018 included $91.0 million from seven software/internet clients. Two of these loans are sponsored buyout loans that were added to our nonaccrual portfolio in 2015, another is a Corporate Finance client that was added during 2016, and the remaining four loans were added during 2018 from our early-stage, Growth and sponsored buyout practices. The total credit exposure for these seven largest nonaccrual loans was $91.2 million as of September 30, 2018, for which we have specifically reserved $38.9 million.

Average nonaccrual loans for the three and nine months endedSeptember 30, 2018 were $122.9 million and $120.6 million, respectively, compared to $119.5 million and $124.6 million for the comparable 2017 periods. The $3.4 million increase in average nonaccrual loans for the three months ended September 30, 2018 compared to September 30, 2017 was primarily from our software/internet loan portfolio. If the nonaccrual loans had not been impaired, $1.8 million and $5.8 million in interest income would have been recorded for the three and nine months endedSeptember 30, 2018, respectively, compared to $1.8 million and $5.6 million for the comparable 2017 periods.

Accrued Interest Receivable and Other Assets

A summary of accrued interest receivable and other assets at September 30, 2018 and December 31, 2017 is as follows:

(Dollars in thousands)	September 30, 2018		December 31, 2017		% Change
Foreign exchange spot contract assets, gross	$	261,036	$	208,738	25.1	%
Derivative assets, gross (1)	235,132		232,152		1.3
Accrued interest receivable	186,097		141,773		31.3
FHLB and Federal Reserve Bank stock	102,378		60,020		70.6
Net deferred tax assets	81,618		63,845		27.8
Accounts receivable	61,090		55,946		9.2
Other assets	178,566		113,772		57.0
Total accrued interest receivable and other assets	$	1,105,917	$	876,246	26.2

(1) See “Derivatives” section below.

Foreign Exchange Spot Contract Assets

Foreign exchange spot contract assets represent unsettled client trades at the end of the period. The increase of $52.3 million was due primarily to an overall increase in activity at period-end as compared to December 31, 2017.

Accrued Interest Receivable

The increase of $44.3 million in accrued interest receivable was primarily reflective of the strong growth of our loans. Period-end loan balances were $27.5 billion, an increase of $4.4 billion, or 19.0 percent, as compared to December 31, 2017.

FHLB and Federal Reserve Bank stock

The increase of $42.4 million in FHLB and Federal Reserve Bank stock is a result of an increase in the amount of stock required to be held by the Bank under the FHLB's membership guidelines.

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Net Deferred Tax Assets

The increase of $17.8 million in net deferred tax assets was primarily due to the decrease in the fair value of AFS securities, an increase in the allowance for loan losses and the recognition of tax over book gains on warrant exercises. The increase in net deferred tax assets was partially offset by an increase in the deferred tax liability as a result of the change in book accounting following the adoption of ASU 2016-01.

Other Assets

Other assets includes various asset amounts for other operational transactions. The increase of $64.8 million was primarily due to a $30.0 million increase in current tax receivable due to the payment in excess of the current quarter's tax provision. Prepaid assets also increased $21.3 million primarily due to the annual timing of prepaid software agreement renewals.

Derivatives

Derivative instruments are recorded as a component of other assets and other liabilities on the balance sheet. The following table provides a summary of derivative assets and liabilities, net at September 30, 2018 and December 31, 2017:

(Dollars in thousands)	September 30, 2018		December 31, 2017		% Change
Assets:
Equity warrant assets	$	146,967	$	123,763	18.7	%
Foreign exchange forward and option contracts	81,903		96,636		(15.2	)
Client interest rate derivatives	6,262		11,753		(46.7	)
Total derivative assets	$	235,132	$	232,152	1.3
Liabilities:
Foreign exchange forward and option contracts	$	76,165	$	96,641	(21.2	)
Client interest rate derivatives	15,156		11,940		26.9
Total derivative liabilities	$	91,321	$	108,581	(15.9	)

Equity Warrant Assets

In connection with negotiating credit facilities and certain other services, we often obtain rights to acquire stock in the form of equity warrant assets in primarily private, venture-backed companies in the technology and life science/healthcare industries. At September 30, 2018, we held warrants in 2,031 companies, compared to 1,868 companies at December 31, 2017. Warrants in 18 companies each had values greater than $1.0 million and collectively represented $42.8 million, or 29.1 percent, of the fair value of the total warrant portfolio at September 30, 2018. The change in fair value of equity warrant assets is recorded in gains on equity warrant assets, net, in noninterest income, a component of consolidated net income. The following table provides a summary of transactions and valuation changes for equity warrant assets for the three and nine months endedSeptember 30, 2018 and 2017: 

	Three months ended September 30,						Nine months ended September 30,
(Dollars in thousands)	2018			2017			2018			2017
Balance, beginning of period	$	143,725		$	131,750		$	123,763		$	131,123
New equity warrant assets	5,113			3,622			14,511			11,114
Non-cash changes in fair value, net	17,286			18,230			32,743			23,564
Exercised equity warrant assets	(17,725		)	(11,060		)	(20,892		)	(20,402		)
Terminated equity warrant assets	(1,432		)	(757		)	(3,158		)	(3,614		)
Balance, end of period	$	146,967		$	141,785		$	146,967		$	141,785

Foreign Exchange Forward and Foreign Currency Option Contracts

We enter into foreign exchange forward contracts and foreign currency option contracts with clients involved in foreign activities, either as the purchaser or seller, depending upon the clients’ needs. For each forward or option contract entered into with our clients, we enter into an opposite way forward or option contract with a correspondent bank, which mitigates the risk of fluctuations in currency rates. We also enter into forward contracts with correspondent banks to economically reduce our foreign exchange exposure related to certain foreign currency denominated instruments. Net gains and losses on the revaluation

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of foreign currency denominated instruments are recorded in the line item “Other” as part of noninterest income, a component of consolidated net income. We have not experienced nonperformance by any of our counterparties and therefore have not incurred any related losses. Further, we anticipate performance by all counterparties. Our net exposure for foreign exchange forward and foreign currency option contracts, net of cash collateral, was $19.0 million at September 30, 2018 and $65.6 million at December 31, 2017. For additional information on our foreign exchange forward contracts and foreign currency option contracts, see Note 9—“Derivative Financial Instruments” of the “Notes to Interim Consolidated Financial Statements (unaudited)” under Part I, Item 1 of this report.

Client Interest Rate Derivatives

We sell interest rate contracts to clients who wish to mitigate their interest rate exposure. We economically reduce the interest rate risk from this business by entering into opposite way contracts with correspondent banks. Our net exposure for client interest rate derivative contracts, net of cash collateral, was $8.3 million at September 30, 2018 and $11.7 million at December 31, 2017. For additional information on our client interest rate derivatives, see Note 9—“Derivative Financial Instruments” of the “Notes to Interim Consolidated Financial Statements (unaudited)” under Part I, Item 1 of this report.

Deposits

Deposits were $48.6 billion at September 30, 2018, an increase of $4.3 billion, or 9.8 percent, compared to $44.3 billion at December 31, 2017. The increase in deposits was driven primarily by a healthy equity funding environment across a majority of our market segments with robust activities in the IPO and secondary public offering markets as well as strong new client acquisition.

At September 30, 2018, the aggregate balance of time deposit accounts individually equal to or greater than $100,000 totaled $72 million, compared to $41 million at December 31, 2017. At September 30, 2018, all of the time deposit accounts individually equal to or greater than $100,000 were scheduled to mature within one year. No material portion of our deposits has been obtained from a single depositor and the loss of any one depositor would not materially affect our business. Approximately 15 percent and 14 percent of our total deposits at September 30, 2018 and December 31, 2017, respectively, were from our clients in Asia.

Short-Term Borrowings

We had $2.6 billion in short-term borrowings at September 30, 2018, compared to $1.0 billion at December 31, 2017. As of September 30, 2018, short-term debt included $2.2 billion in advances from the FHLB and $0.4 billion in securities sold under an agreement to repurchase. For more information on our short-term debt, see Note 8—“Short-Term Borrowings and Long-Term Debt” of the “Notes to Interim Consolidated Financial Statements (unaudited)” under Part I, Item 1 of this report.

Long-Term Debt

Our long-term debt was $696.2 million at September 30, 2018 and $695.5 million at December 31, 2017. As of September 30, 2018, long-term debt included our 3.50% Senior Notes and 5.375% Senior Notes. For more information on our long-term debt, see Note 8—“Short-Term Borrowings and Long-Term Debt” of the “Notes to Interim Consolidated Financial Statements (unaudited)” under Part I, Item 1 of this report.

Other Liabilities

A summary of other liabilities at September 30, 2018 and December 31, 2017 is as follows:

(Dollars in thousands)	September 30, 2018		December 31, 2017		% Change
Foreign exchange spot contract liabilities, gross	$	341,403	$	202,807	68.3
Accrued compensation	173,036		167,531		3.3
Allowance for unfunded credit commitments	51,808		51,770		0.1
Derivative liabilities, gross (1)	91,321		108,581		(15.9	)
Other liabilities	488,541		381,066		28.2
Total other liabilities	$	1,146,109	$	911,755	25.7

(1) See “Derivatives” section above.

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Foreign Exchange Spot Contract Liabilities

Foreign exchange spot contract liabilities represent unsettled client trades at the end of the period. The increase of $138.6 million was due primarily to increased client trade activity at period-end as compared to December 31, 2017.

Other Liabilities

Other liabilities includes various accrued liability amounts for other operational transactions. The increase of $107.5 million was reflective primarily of a $66.0 million increase in new commitments for our qualified affordable tax credit funds and an increase in accrued accounts payable for $34.9 million at September 30, 2018 as compared to December 31, 2017.

Noncontrolling Interests

Noncontrolling interests totaled $145.7 million and $139.6 million at September 30, 2018 and December 31, 2017, respectively. The $6.1 million increase was due primarily to income attributable to noncontrolling interests of $28.8 million, partially offset by net distributions of $22.7 million to limited partners from various managed funds of funds for the nine months endedSeptember 30, 2018.

Fair Value Measurements

The following table summarizes our financial assets and liabilities that are measured at fair value on a recurring basis as of September 30, 2018 and December 31, 2017:

	September 30, 2018						December 31, 2017
(Dollars in thousands)	Total Balance			Level 3			Total Balance			Level 3
Assets carried at fair value	$	9,688,621		$	141,490		$	11,481,237		$	122,250
As a percentage of total assets	16.7		%	0.2		%	22.4		%	0.2		%
Liabilities carried at fair value	$	91,321		$	—		$	108,581		$	—
As a percentage of total liabilities	0.2		%	—		%	0.2		%	—		%
As a percentage of assets carried at fair value				1.5		%				1.1		%

Financial assets valued using Level 3 measurements consist of our non-marketable investment securities in shares of private company stock and equity warrant assets (rights to shares of private and public company capital stock). The valuation methodologies of our non-marketable securities carried under fair value accounting and equity warrant assets involve a significant degree of management judgment. Refer to Note 15—“Fair Value of Financial Instruments” of the “Notes to Interim Consolidated Financial Statements (unaudited)” under Part I, Item 1 of this report for a summary of the valuation techniques and significant inputs used for each class of Level 3 assets.

The inherent uncertainty in the process of valuing securities for which a ready market does not exist may cause our estimated values of these securities to differ significantly from the values that would have been derived had a ready market for the securities existed, and those differences could be material. The timing and amount of changes in fair value, if any, of these financial instruments depend upon factors beyond our control, including the performance of the underlying companies, fluctuations in the market prices of the preferred or common stock of the underlying companies, general volatility and interest rate market factors, and legal and contractual restrictions. The timing and amount of actual net proceeds, if any, from the disposition of these financial instruments depend upon factors beyond our control, including investor demand for IPOs, levels of M&A activity, legal and contractual restrictions on our ability to sell, and the perceived and actual performance of portfolio companies. All of these factors are difficult to predict and there can be no assurances that we will realize the full value of these securities, which could result in significant losses. See “Risk Factors” set forth in our 2017 Form 10-K.

During the three and nine months endedSeptember 30, 2018, the Level 3 assets that are measured at fair value on a recurring basis experienced net realized and unrealized gains of $32.2 million and $69.2 million, respectively, primarily reflective of valuation increases from our public and private company warrant portfolios and net gains realized on exercised warrant assets due to IPO and M&A activity. During the three and nine months endedSeptember 30, 2017, the Level 3 assets that are measured at fair value on a recurring basis experienced net realized and unrealized gains of $24.4 million and $41.4 million, respectively, primarily reflective of valuation increases from our public and private company warrant portfolios and net gains realized on exercised warrant assets due to IPO and M&A activity.

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Capital Resources

We maintain an adequate capital base to support anticipated asset growth, operating needs and credit and other business risks, and to provide for SVB Financial and the Bank to be in compliance with all regulatory capital guidelines. Our primary sources of new capital include retained earnings and proceeds from the sale and issuance of our capital stock or other securities. In consultation with the Finance Committee of our Board of Directors, management engages in regular capital planning processes in an effort to optimize the use of capital available to us and to appropriately plan for our future capital needs. The capital plan considers capital needs for the foreseeable future and allocates capital to both existing and future business activities. Expected future use or activities for which capital may be set aside include balance sheet growth and associated relative increases in market or credit exposure, investment activity, potential product and business expansions, acquisitions and strategic or infrastructure investments. In addition, we conduct capital stress tests as part of our annual capital planning process. The capital stress tests allow us to assess the impact of adverse changes in the economy and interest rates on our capital adequacy position.

SVBFG Stockholders’ Equity

SVBFG stockholders’ equity totaled $4.9 billion at September 30, 2018, an increase of $744.6 million, or 17.8 percent, compared to $4.2 billion at December 31, 2017. This increase was due primarily to net income of $707.6 million for the nine months endedSeptember 30, 2018 and a net increase to equity of $68.8 million related to the adoption of new accounting guidance offset by a decrease in the fair value of our AFS securities portfolio of $70.8 million, net of tax, driven by increases in period-end market interest rates.

Funds generated through retained earnings are a significant source of capital and liquidity and are expected to continue to be so in the future.

Capital Ratios

Both SVB Financial and the Bank are subject to various regulatory capital requirements administered by state and federal banking agencies.

Regulatory capital ratios for SVB Financial and the Bank exceeded minimum federal regulatory guidelines for a well-capitalized depository institution as of September 30, 2018 and December 31, 2017. Capital ratios for SVB Financial and the Bank, compared to the minimum regulatory ratios applicable to bank holding companies and banks to be considered “well capitalized” and “adequately capitalized," are set forth below:

					Minimum Ratios under Applicable Regulatory Capital Adequacy Requirements
	September 30, 2018		December 31, 2017		“Well Capitalized”		“Adequately  Capitalized”
SVB Financial:
CET 1 risk-based capital ratio	13.28	%	12.78	%	6.5	%	4.5	%
Tier 1 risk-based capital ratio	13.45		12.97		8.0		6.0
Total risk-based capital ratio	14.34		13.96		10.0		8.0
Tier 1 leverage ratio	8.99		8.34		N/A		4.0
Tangible common equity to tangible assets ratio (1)	8.47		8.16		N/A		N/A
Tangible common equity to risk-weighted assets ratio (1)	13.00		12.77		N/A		N/A
Bank:
CET 1 risk-based capital ratio	11.98	%	12.06	%	6.5	%	4.5	%
Tier 1 risk-based capital ratio	11.98		12.06		8.0		6.0
Total risk-based capital ratio	12.91		13.04		10.0		8.0
Tier 1 leverage ratio	7.82		7.56		5.0		4.0
Tangible common equity to tangible assets ratio (1)	7.44		7.47		N/A		N/A
Tangible common equity to risk-weighted assets ratio (1)	11.70		11.98		N/A		N/A

(1) See below for a reconciliation of non-GAAP tangible common equity to tangible assets and tangible common equity to risk-weighted assets.

Risk-based capital ratios (CET 1, tier 1, and total risk-based capital) for SVB Financial increased as of September 30, 2018, compared to the same ratios as of December 31, 2017 primarily as a result of the adoption of new accounting guidance that resulted in a net increase in capital of $68.8 million. This increase in capital from the adoption of the new accounting guidance,

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in addition to net income of $707.6 million, more than offset the increases in risk-weighted assets primarily attributable to our robust loan growth for 2018.

Risk-based capital ratios (CET 1, tier 1, and total risk-based capital) for the Bank decreased as of September 30, 2018, compared to the same ratios as of December 31, 2017. The decrease in the Bank's capital ratios reflected $95.0 million of cash dividends paid by the Bank to our bank holding company, SVB Financial, during the nine months ended September 30, 2018.

Both SVB Financial and the Bank's tier 1 leverage ratios increased as of September 30, 2018, compared to December 31, 2017, due to proportionally higher capital from net income to average assets growth during 2018. All of our reported capital ratios remain above the levels considered to be “well capitalized” under applicable banking regulations.

The tangible common equity to tangible assets ratio and the tangible common equity to risk-weighted assets ratios are not required by GAAP or applicable bank regulatory requirements. However, we believe these ratios provide meaningful supplemental information regarding our capital levels. Our management uses, and believes that investors benefit from referring to, these ratios in evaluating the adequacy of the Company’s capital levels; however, these financial measures should be considered in addition to, not as a substitute for or preferable to, comparable financial measures prepared in accordance with GAAP. These ratios are calculated by dividing total SVBFG stockholders' equity, by total period-end assets and risk-weighted assets, after reducing both amounts by acquired intangibles, if any. The manner in which this ratio is calculated varies among companies. Accordingly, our ratio is not necessarily comparable to similar measures of other companies.

The following table provides a reconciliation of non-GAAP financial measures with financial measures defined by GAAP for SVB Financial and the Bank for the periods ended September 30, 2018 and December 31, 2017:

	SVB Financial						Bank
Non-GAAP tangible common equity and tangible assets    (Dollars in thousands, except ratios)	September 30, 2018			December 31, 2017			September 30, 2018			December 31, 2017
GAAP SVBFG stockholders’ equity	$	4,924,369		$	4,179,795		$	4,260,685		$	3,762,542
Tangible common equity	$	4,924,369		$	4,179,795		$	4,260,685		$	3,762,542
GAAP total assets	$	58,139,734		$	51,214,467		$	57,245,029		$	50,383,774
Tangible assets	$	58,139,734		$	51,214,467		$	57,245,029		$	50,383,774
Risk-weighted assets	$	37,889,139		$	32,736,959		$	36,424,091		$	31,403,489
Tangible common equity to tangible assets	8.47		%	8.16		%	7.44		%	7.47		%
Tangible common equity to risk-weighted assets	13.00			12.77			11.70			11.98

The tangible common equity to tangible assets ratio decreased for the Bank primarily as a result of the $95.0 million in cash dividends paid by the Bank to our bank holding company, SVB Financial Group, during the nine months ended September 30, 2018. The tangible common equity to risk-weighted assets ratio decreased for the Bank as a result of the proportionally higher increase in risk-weighted assets relative to the increase in tangible common equity. The growth in period-end risk-weighted assets was primarily due to period-end loan growth and higher investment balances driven by increases in deposits.

Off-Balance Sheet Arrangements

In the normal course of business, we use financial instruments with off-balance sheet risk to meet the financing needs of our customers. These financial instruments include commitments to extend credit, commercial and standby letters of credit and commitments to invest in venture capital and private equity fund investments. These instruments involve, to varying degrees, elements of credit risk. Credit risk is defined as the possibility of sustaining a loss because other parties to the financial instrument fail to perform in accordance with the terms of the contract. For details of our commitments to extend credit, and commercial and standby letters of credit, please refer to Note 13—“Off-Balance Sheet Arrangements, Guarantees and Other Commitments” of the “Notes to Interim Consolidated Financial Statements (unaudited)” under Part I, Item 1 of this report.

Commitments to Invest in Venture Capital and Private Equity Funds

Subject to applicable regulatory requirements, including the Volcker Rule, we make investments. We make commitments to invest in venture capital and private equity funds, which in turn make investments generally in, or in some cases make loans to, privately-held companies. Commitments to invest in these funds are generally made for a 10-year period from the inception of the fund. Although the limited partnership agreements governing these investments typically do not restrict the general partners from calling 100% of committed capital in one year, it is customary for these funds to generally call most of the capital commitments over 5 to 7 years; however in certain cases, the funds may not call 100% of committed capital over the life of the fund. The actual timing of future cash requirements to fund these commitments is generally dependent upon the investment cycle, overall market conditions, and the nature and type of industry in which the privately held companies operate.

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For further details on our commitments to invest in venture capital and private equity funds, refer to Note 13—“Off-Balance Sheet Arrangements, Guarantees and Other Commitments” of the “Notes to Interim Consolidated Financial Statements (unaudited)” under Part I, Item 1 of this report.

Liquidity

The objective of liquidity management is to ensure that funds are available in a timely manner to meet our financial obligations, including, as necessary, paying creditors, meeting depositors’ needs, accommodating loan demand and growth, funding investments, repurchasing securities and other operating or capital needs, without incurring undue cost or risk, or causing a disruption to normal operating conditions.

We regularly assess the amount and likelihood of projected funding requirements through a review of factors such as historical deposit volatility and funding patterns, present and forecasted market and economic conditions, individual client funding needs, and existing and planned business activities. Our Asset/Liability Committee (“ALCO”), which is a management committee, provides oversight to the liquidity management process and recommends policy guidelines for the approval of the Finance Committee of our Board of Directors, and courses of action to address our actual and projected liquidity needs. Additionally, we routinely conduct liquidity stress testing as part of our liquidity management practices.

Our deposit base is, and historically has been, our primary source of liquidity. Our deposit levels and cost of deposits may fluctuate from time to time due to a variety of factors, including market conditions, prevailing interest rates, changes in client deposit behaviors, availability of insurance protection, and our offering of deposit products. We may also offer more investment alternatives for our off-balance sheet products which may impact deposit levels. At September 30, 2018, our period-end total deposit balances were $48.6 billion, compared to $44.3 billion at December 31, 2017.

Our liquidity requirements can also be met through the use of our portfolio of liquid assets. Our definition of liquid assets includes cash and cash equivalents in excess of the minimum levels necessary to carry out normal business operations, short-term investment securities maturing within one year, available-for-sale securities eligible and available for financing or pledging purposes with a maturity in excess of one year and anticipated near-term cash flows from investments.

We have certain facilities in place to enable us to access short-term borrowings on a secured (using loans and fixed income investment securities as collateral) and unsecured basis. These include repurchase agreements and federal funds lines with various financial institutions. As of September 30, 2018, we did not have any borrowings outstanding against our federal funds lines. We also pledge collateral to the FHLB of San Francisco (comprised primarily of loans and fixed income investment securities) and the discount window at the FRB (comprised primarily of fixed income investment securities) of which $2.0 billion and $1.0 billion, respectively, of our borrowing capacity was unused and available to support additional borrowings at September 30, 2018.

On a stand-alone basis, SVB Financial’s primary liquidity channels include dividends from the Bank, its portfolio of liquid assets, and its ability to raise debt and capital. Consistent with recent prior quarters, the Bank has paid a quarterly dividend to SVB Financial. For the three and nine months endedSeptember 30, 2018, the dividend amount paid was $40 million and $95 million, respectively. The ability of the Bank to pay dividends is subject to certain regulations described in “Business—Supervision and Regulation—Restriction on Dividends” under Part I, Item 1 of our 2017 Form 10-K.

Consolidated Summary of Cash Flows

Below is a summary of our average cash position and statement of cash flows for the nine months endedSeptember 30, 2018 and 2017. For further details, see our “Interim Consolidated Statements of Cash Flows (Unaudited)” under Part I, Item 1 of this report.

	Nine months ended September 30,
(Dollars in thousands)	2018			2017
Average cash and cash equivalents	$	3,032,407		$	3,596,669
Percentage of total average assets	5.6		%	7.6		%
Net cash provided by operating activities	$	703,904		$	468,032
Net cash used for investing activities	(5,736,296		)	(4,734,383		)
Net cash provided by financing activities	5,928,458			5,276,172
Net increase in cash and cash equivalents	$	896,066		$	1,009,821

Average cash and cash equivalents decreased by $0.6 billion, or 15.7 percent, to $3.0 billion for the nine months endedSeptember 30, 2018, compared to $3.6 billion for the comparable 2017 period.

102

Cash provided by operating activities was $703.9 million for the nine months endedSeptember 30, 2018, reflective primarily of net income before noncontrolling interests of $736.4 million, partially offset by net decreases in adjustments to reconcile net income to net cash.

Cash used for investing activities of $5.7 billion for the nine months endedSeptember 30, 2018 was driven by $5.4 billion in purchases of fixed income investment securities partially offset by $4.0 billion of proceeds from maturities and principal paydowns from our fixed income investment securities portfolio. Additionally, $4.4 billion in cash outflows were used to fund loan growth during the nine months endedSeptember 30, 2018.

Cash provided by financing activities was $5.9 billion for the nine months endedSeptember 30, 2018, reflective primarily of a net increase of $4.3 billion in deposits and an increase of $1.6 billion in our short-term overnight borrowings utilized primarily to fund loan growth as well as to support the short-term liquidity needs of the Bank.

Cash and cash equivalents were $3.8 billion and $3.6 billion, respectively, at September 30, 2018 and September 30, 2017.

ITEM 3. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

Interest Rate Risk Management

Market risk is defined as the risk of adverse fluctuations in the market value of financial instruments due to changes in market interest rates. Interest rate risk is our primary market risk and can result from timing and volume differences in the repricing of our rate-sensitive assets and liabilities, widening or tightening of credit spreads, changes in the general level of market interest rates and changes in the shape and level of the benchmark LIBOR/SWAP yield curve. Additionally, changes in interest rates can influence the rate of principal prepayments on mortgage securities, which affects the rate of amortization of purchase premiums and discounts. Other market risks include foreign currency exchange risk, equity price risk, including the effect of competition on product pricing. While all of these risks are important considerations, all are inherently difficult to predict, and it is equally difficult to assess the impact of each on the overall simulation results. Consequently, simulations used to analyze sensitivity of net interest income to interest rate risk will differ from actual results due to differences in the timing, frequency, and magnitude of changes in market rates, the impact of competition, fluctuating business conditions, and the impact of strategies taken by management to mitigate these risks.

Interest rate risk is managed by our ALCO. ALCO reviews the sensitivity of the market valuation on earning assets and funding liabilities and 12-month forward looking net interest income from changes in interest rates, structural changes in investment and funding portfolios, loan and deposit activity and current market conditions. Adherence with relevant metrics included in our Interest Rate Risk Policy, which is approved by the Finance Committee of our Board of Directors, is monitored on an ongoing basis.

Management of interest rate risk is carried out primarily through strategies involving our fixed income securities portfolio, available funding channels and capital market activities. In addition, our policies permit the use of off-balance sheet derivatives to assist in managing interest rate risk.

We utilize a simulation model to perform sensitivity analysis on the economic value of our equity and our net interest income under a variety of interest rate scenarios, balance sheet forecasts and business strategies. The simulation model provides a dynamic assessment of interest rate sensitivity embedded within our balance sheet which measures the potential variability in economic value and net interest income relating solely to changes in market interest rates over time. We review our interest rate risk position and sensitivity to market rates on a quarterly basis at a minimum.

103

Model Simulation and Sensitivity Analysis

A specific application of our simulation model involves measurement of the impact of changes in market interest rates on our economic value of equity (“EVE”). EVE is defined as the market value of assets less the market value of liabilities. Another application of the simulation model measures the impact of changes in market interest rates on our net interest income (“NII”) assuming a static balance sheet as of the period-end reporting date. For the NII simulation, market rates as well as the size and composition of the balance sheet are held constant over the simulation horizon. Simulated cash flows during the scenario horizon are assumed to be replaced as they occur, which maintains the balance sheet at its current size and composition. Yield and spread assumptions on cash and investment balances reflect current market rates. Yield and spread assumptions on loans reflect recent market impacts on product pricing. Similarly, we make certain deposit decay rate assumptions on demand deposits and interest bearing deposits, which are replenished to hold the level and mix of funding liabilities constant. Changes in market interest rates that affect us are principally short-term interest rates and include the following benchmark indexes: (i) National Prime rates, (ii) 1-month and 3-month LIBOR, and (iii) the Federal Funds target rate. Changes in these short-term rates impact interest earned on our variable rate loans, variable rate investment securities and balances held as cash and cash equivalents. Additionally, simulated changes in deposit pricing relative to changes in market rates, commonly referred to as deposit beta, generally follow overall changes in short-term interest rates, although actual changes may lag in terms of timing and magnitude. Overall, the assumed weighted deposit beta on interest bearing deposits is approximately 35.0 percent, which means deposit repricing is assumed to be approximately 35.0 percent of a given change in short-term interest rates. This repricing is reflected as a change in interest expense on interest bearing deposit balances.

The following table presents our EVE and NII sensitivity exposure related to an instantaneous and sustained parallel shift in market interest rates of 100 and 200 bps at September 30, 2018 and at December 31, 2017:

Change in interest rates (bps) (Dollars in thousands)	Estimated		Estimated Increase/(Decrease) in EVE					Estimated		Estimated Increase/(Decrease) in NII
	EVE		Amount			Percent		NII		Amount			Percent
September 30, 2018:
200	$	9,132,126	$	307,428		3.5	%	$	2,551,418	$	517,562		25.4	%
100	8,959,615		134,917			1.5		2,292,564		258,708			12.7
—	8,824,698		—			—		2,033,856		—			—
-100	8,648,275		(176,423		)	(2.0	)	1,770,999		(262,857		)	(12.9	)
-200	8,060,737		(763,961		)	(8.7	)	1,510,416		(523,440		)	(25.7	)
December 31, 2017:
200	$	8,091,107	$	805,624		11.1	%	$	1,885,885	$	400,127		26.9	%
100	7,716,066		430,583			5.9		1,683,742		197,984			13.3
—	7,285,483		—			—		1,485,758		—			—
-100	6,637,588		(647,895		)	(8.9	)	1,252,063		(233,695		)	(15.7	)
-200	5,718,401		(1,567,082		)	(21.5	)	1,108,712		(377,046		)	(25.4	)

Economic Value of Equity

The estimated EVE in the preceding table is based on a combination of valuation methodologies including a discounted cash flow analysis and a multi-path lattice based valuation. Both methodologies use publicly available market interest rates to determine discounting factors on projected cash flows. The model simulations and calculations are highly assumption-dependent and will change regularly as the composition of earning assets and funding liabilities change (including the impact of changes in the value of interest rate derivatives, if any), as interest rate environments evolve, and as we change our assumptions in response to relevant market conditions, competition or business circumstances. These calculations do not reflect forecast changes in our balance sheet or changes we may make to reduce our EVE exposure as a part of our overall interest rate risk management strategy.

As with any method of measuring interest rate risk, certain limitations are inherent in the method of analysis presented in the preceding table. We are exposed to yield curve risk, prepayment risk, basis risk, and yield spread compression, which cannot be fully modeled and expressed using the above methodology. Accordingly, the results in the preceding table should not be relied upon as a precise indicator of actual results in the event of changing market interest rates. Additionally, the resulting EVE and NII estimates are not intended to represent, and should not be construed to represent our estimate of the underlying value of equity or forecast of NII.

104

Our base case EVE as of September 30, 2018 increased from December 31, 2017 by $1.5 billion, driven by changes in balance sheet composition as well as rising interest rates. At September 30, 2018, as compared to December 31, 2017, total loan balances increased by $4.4 billion, primarily in Prime and LIBOR indexed variable rate loans. Total fixed income securities also increased by $1.2 billion due to purchases of fixed rate long maturity instruments such as pass-through mortgage-backed securities and municipal debt securities combined with run-off of shorter maturity U.S. Treasury securities. Additionally, total deposits increased by $4.3 billion.

Higher LIBOR/swap rates contributed approximately $674 million of the $1.5 billion total change in base case EVE. Overall balance sheet growth contributed the remaining $865 million. Higher rates and continued investment in mortgage-backed securities and municipal securities resulted in a $296 million decrease in EVE sensitivity in the +100 bps rate shock scenario compared to December 31, 2017. EVE in the -100 and -200 bps rate shock scenarios increased $471 million and $803 million, respectively.

12-Month Net Interest Income Simulation

Our estimated 12-month NII forecast at September 30, 2018 increased compared to December 31, 2017 by $548 million. The increase is primarily the result of the growth of our loan portfolio, and the increases in market rates, particularly the Prime rate and LIBOR. A majority of our loans are indexed to the Prime rate and LIBOR. As rates rise, interest income on assets that are tied to variable rate indexes, primarily our variable rate loans, are expected to benefit our base 12-month NII projections. In addition, the 12-month NII simulations include repricing assumptions on our interest bearing deposit products which we set at our discretion based on client needs and our overall funding mix. Repricing of interest bearing deposits impacts estimated interest expense. As noted previously, repricing deposit rates are generally assumed to be less than one-half of the amount of simulated changes in short-term market interest rates.

NII sensitivity is measured as the percentage change in projected 12-month net interest income earned in +/- 100 and +/- 200 basis point interest rate shock scenarios compared to a base scenario where balances and interest rates are held constant over the forecast horizon. At September 30, 2018, NII sensitivity was 12.7 percent in the +100 bps interest rate scenario, compared to 13.3 percent at December 31, 2017. Our NII sensitivity in the +200 bps interest rate shock scenario was 25.4 percent compared to 26.9 percent at December 31, 2017. The slight decrease in NII sensitivity is the result of an increase in the composition of longer duration securities in our fixed income securities portfolio, as well as wider implementation of rate floors in the loan portfolio. Most of the balance sheet growth for the nine months ended September 30, 2018 has been in floating rate loans coupled with a large proportion of non-interest bearing deposit balances. The relatively high percentages of non-interest bearing demand deposits and floating rate loans are the primary drivers of NII sensitivity in the balance sheet. NII sensitivity in the -100 bps scenario of negative 12.9 percent was lower at September 30, 2018 compared to a negative 15.7 percent at December 31, 2017. The -200 bps scenario currently indicates only a slightly higher percentage change in NII at September 30, 2018 compared to December 31, 2017.

The simulation model used in the above analysis incorporates embedded floors on loans, where present, in our interest rate scenarios, which prevent model benchmark rates from moving below zero percent in the down rate scenarios. The embedded floors are also a factor in the up rate scenarios to the extent a simulated increase in rates is needed before floored rates are cleared. In addition, we assume different deposit balance decay rates based on a historical deposit study of our clients. These assumptions may change in future periods based on changes in client behavior and at management's discretion. Actual changes in our deposit pricing strategies may differ from our current model assumptions and may have an impact on our actual sensitivity overall.

ITEM 4. CONTROLS AND PROCEDURES

Disclosure Controls and Procedures

Disclosure controls and procedures are the controls and other procedures that are designed to ensure that information required to be disclosed in the reports that we file or submit under the Securities Exchange Act of 1934, as amended (the “Exchange Act”) is recorded, processed, summarized, and reported within the time periods specified in SEC rules and forms. Disclosure controls and procedures include, among other things, processes, controls and procedures designed to ensure that information required to be disclosed in the reports that we file or submit under the Exchange Act is accumulated and communicated to management, including the Chief Executive Officer and Chief Financial Officer, as appropriate, to allow timely decisions regarding required disclosure.

We carried out an evaluation, under the supervision and with the participation of management, including the Chief Executive Officer and the Chief Financial Officer, of the effectiveness of the design and operation of our disclosure controls and procedures as of our most recently completed fiscal quarter, pursuant to Exchange Act Rule 13a-15(b). Based upon this evaluation, the Chief Executive Officer and Chief Financial Officer have concluded that, as of the end of the period covered by this report, the Company’s disclosure controls and procedures were effective.

105

Changes in Internal Control

Except as set forth below, there were no changes in our internal control over financial reporting identified in management’s evaluation pursuant to Rules 13a-15(d) or 15d-15(d) of the Exchange Act during the period covered by this Quarterly Report on Form 10-Q that materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

Beginning January 1, 2018, we implemented ASC 606, Revenue from Contracts with Customers.  Although the new revenue standard is expected to have an immaterial impact on our ongoing net income, we did implement changes to our processes related to revenue recognition and the control activities within them.  These included the development of new policies based on the five-step model provided in the new revenue standard, new training, ongoing contract review requirements, and gathering of information provided for disclosures.

106

PART II–OTHER INFORMATION

ITEM 1. LEGAL PROCEEDINGS

Please refer to Note 16—“Legal Matters” of the “Notes to Interim Consolidated Financial Statements (unaudited)” under Part I, Item 1 of this report.

ITEM 1A. RISK FACTORS

There are no material changes to the risk factors set forth in our 2017 Annual Report on Form 10-K.

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

Recent Sales of Unregistered Securities

None.

Issuer Purchases of Equity Securities

None.

ITEM 3. DEFAULTS UPON SENIOR SECURITIES

None.

ITEM 4. MINE SAFETY DISCLOSURES

Not applicable.

ITEM 5. OTHER INFORMATION

None.

ITEM 6. EXHIBITS

Exhibit Number	Exhibit Description	Incorporated by Reference				Filed  Herewith
		Form	File No.	Exhibit	Filing Date
31.1	Rule 13a-14(a) / 15(d)-14(a) Certification of Principal Executive Officer					X
31.2	Rule 13a-14(a) / 15(d)-14(a) Certification of Principal Financial Officer					X
32.1	Section 1350 Certifications					X
101.INS	XBRL Instance Document					X
101.SCH	XBRL Taxonomy Extension Schema Document					X
101.CAL	XBRL Taxonomy Extension Calculation Linkbase Document					X
101.DEF	XBRL Taxonomy Extension Definition Linkbase Document					X
101.LAB	XBRL Taxonomy Extension Label Linkbase Document					X
101.PRE	XBRL Taxonomy Extension Presentation Linkbase Document					X

107

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

	SVB Financial Group
Date: November 9, 2018	/s/ DANIEL BECK
	Daniel Beck
	Chief Financial Officer
	(Principal Financial Officer)
	SVB Financial Group
Date: November 9, 2018	/s/ KAMRAN HUSAIN
	Kamran Husain
	Chief Accounting Officer
	(Principal Accounting Officer)

108

EX-31.1

EXHIBIT 31.1

RULE 13a-14(a)/15d-14(a) CERTIFICATION

I, Greg Becker, certify that:

1. I have reviewed this quarterly report on Form 10-Q of SVB Financial Group;

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 periods 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(s) 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(s) 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 9, 2018	/s/ GREG BECKER
	Greg Becker
	President and Chief Executive Officer
	(Principal Executive Officer)

EX-31.2

EXHIBIT 31.2

RULE 13a-14(a)/15d-14(a) CERTIFICATION

I, Daniel Beck, certify that:

1. I have reviewed this quarterly report on Form 10-Q of SVB Financial Group;

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 periods 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(s) 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(s) 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 9, 2018	/s/ DANIEL BECK
	Daniel Beck
	Chief Financial Officer
	(Principal Financial Officer)

EX-32.1

EXHIBIT 32.1

SECTION 1350 CERTIFICATIONS

I, Greg Becker, certify, pursuant to 18 U.S.C. Section 1350, that, to my knowledge, the quarterly report of SVB Financial Group on Form 10-Q for the quarterly period ended September 30, 2018, (i) fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934 and (ii) that the information contained in such Form 10-Q fairly presents, in all material respects, the financial condition and results of operations of SVB Financial Group.

Date: November 9, 2018	/s/ GREG BECKER
	Greg Becker
	President and Chief Executive Officer
	(Principal Executive Officer)

I, Daniel Beck, certify, pursuant to 18 U.S.C. Section 1350, that, to my knowledge, the quarterly report of SVB Financial Group on Form 10-Q for the quarterly period ended September 30, 2018, (i) fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934 and (ii) that the information contained in such Form 10-Q fairly presents, in all material respects, the financial condition and results of operations of SVB Financial Group.

Date: November 9, 2018	/s/ DANIEL BECK
	Daniel Beck
	Chief Financial Officer
	(Principal Financial Officer)

XML

Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2018	Oct. 31, 2018
Document and Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2018
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	Q3
Trading Symbol	SIVB
Entity Registrant Name	SVB FINANCIAL GROUP
Entity Central Index Key	0000719739
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Emerging Growth Company	false
Entity Small Business	false
Entity Common Stock, Shares Outstanding		53,250,854

XML

Interim Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Assets
Cash and cash equivalents	$ 3,819,141	$ 2,923,075
Available-for-sale securities, at fair value (cost of $9,236,301 and $11,131,008, respectively)	9,087,609	11,120,664
Held-to-maturity securities, at cost (fair value of $15,372,238 and $12,548,280, respectively)	15,899,726	12,663,455
Non-marketable and other equity securities	896,249	651,053
Total investment securities	25,883,584	24,435,172
Loans, net of unearned income	27,494,915	23,106,316
Allowance for loan losses	(285,713)	(255,024)
Net loans	27,209,202	22,851,292
Premises and equipment, net of accumulated depreciation and amortization	121,890	128,682
Accrued interest receivable and other assets	1,105,917	876,246
Total assets	58,139,734	51,214,467
Liabilities:
Noninterest-bearing demand deposits	40,473,774	36,655,497
Interest-bearing deposits	8,122,337	7,598,578
Total deposits	48,596,111	44,254,075
Short-term borrowings	2,631,252	1,033,730
Other liabilities	1,146,109	911,755
Long-term debt	696,217	695,492
Total liabilities	53,069,689	46,895,052
Commitments and contingencies (Note 13 and Note 16)
SVBFG stockholders’ equity:
Preferred stock, $0.001 par value, 20,000,000 shares authorized; no shares issued and outstanding	0	0
Common stock, $0.001 par value, 150,000,000 shares authorized; 53,250,255 shares and 52,835,188 shares outstanding, respectively	53	53
Additional paid-in capital	1,360,030	1,314,377
Retained earnings	3,672,696	2,866,837
Accumulated other comprehensive loss	(108,410)	(1,472)
Total SVBFG stockholders’ equity	4,924,369	4,179,795
Noncontrolling interests	145,676	139,620
Total equity	5,070,045	4,319,415
Total liabilities and total equity	$ 58,139,734	$ 51,214,467

XML

Interim Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Statement of Financial Position [Abstract]
Preferred stock, par value, in usd per share	$ 0.001	$ 0.001
Preferred stock, shares authorized	20,000,000	20,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value, in usd per share	$ 0.001	$ 0.001
Common stock, shares authorized	150,000,000	150,000,000
Common stock, shares outstanding	53,250,255	52,835,188
Available-for-sale securities, cost	$ 9,236,301	$ 11,131,008
Held-to-maturity securities	$ 15,372,238	$ 12,548,280

XML

Interim Consolidated Statements of Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Interest income:
Loans	$ 352,353	$ 268,445	$ 979,724	$ 745,983
Investment securities:
Taxable	142,075	109,443	403,702	294,768
Non-taxable	10,748	1,172	23,506	2,703
Federal funds sold, securities purchased under agreements to resell and other short-term investment securities	8,137	6,211	20,080	16,670
Total interest income	513,313	385,271	1,427,012	1,060,124
Interest expense:
Deposits	8,042	2,304	18,409	6,218
Borrowings	12,049	8,993	29,075	27,243
Total interest expense	20,091	11,297	47,484	33,461
Net interest income	493,222	373,974	1,379,528	1,026,663
Provision for credit losses	17,174	23,522	74,226	70,062
Net interest income after provision for credit losses	476,048	350,452	1,305,302	956,601
Noninterest income:
Gains on investment securities, net	32,193	15,238	77,365	48,838
Gains on equity warrant assets, net	34,141	24,922	72,393	42,432
Foreign exchange fees	32,656	29,671	100,560	82,026
Fees and Commissions, Credit and Debit Cards1	24,121	20,270	68,739	56,099
Credit card fees	24,121	20,270	68,739	56,099
Deposit service charges	19,588	14,508	56,081	43,046
Client investment fees	36,265	15,563	88,592	37,571
Lending related fees	10,675	15,404	30,938	32,874
Letters of credit and standby letters of credit fees	8,409	7,306	24,938	20,951
Other	12,022	15,896	38,671	41,128
Total noninterest income	210,070	158,778	558,277	404,965
Noninterest expense:
Compensation and benefits	195,437	153,263	543,198	449,412
Professional services	36,542	32,987	112,080	86,331
Premises and equipment	19,858	18,937	57,576	53,753
Net occupancy	13,694	12,660	40,598	35,437
Business development and travel	12,712	10,329	35,998	30,913
FDIC and state assessments	9,550	8,359	29,306	26,354
Correspondent bank fees	3,513	3,162	10,200	9,770
Other	18,139	18,064	51,645	54,670
Total noninterest expense	309,445	257,761	880,601	746,640
Income before income tax expense	376,673	251,469	982,978	614,926
Income tax expense	95,308	97,351	246,561	220,412
Net income before noncontrolling interests	281,365	154,118	736,417	394,514
Net income attributable to noncontrolling interests	(6,548)	(5,498)	(28,841)	(21,218)
Net income available to common stockholders	$ 274,817	$ 148,620	$ 707,576	$ 373,296
Earnings per common share—basic (dollars per share)	$ 5.16	$ 2.82	$ 13.33	$ 7.11
Earnings per common share—diluted (dollars per share)	$ 5.10	$ 2.79	$ 13.15	$ 7.01

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Interim Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Statement of Comprehensive Income [Abstract]
Net income before noncontrolling interests		$ 281,365	$ 154,118	$ 736,417	$ 394,514
Change in foreign currency cumulative translation gains and losses:
Foreign currency translation (losses) gains		(3,259)	1,928	(5,337)	4,463
Related tax benefit (expense)		905	(787)	1,482	(1,821)
Change in unrealized gains and losses on available-for-sale securities:
Unrealized holding (losses) gains		(24,902)	925	(98,032)	(12,471)
Related tax benefit (expense)		6,994	(429)	27,269	5,207
Reclassification adjustment for losses (gains) included in net income	[1]	0	101	0	(384)
Related tax (benefit) expense	[1]	0	(41)	0	157
Reclassification of unrealized gains on equity securities to retained earnings for ASU 2016-01	[1]	0	0	(40,316)	0
Related tax expense	[1]	0	0	11,145	0
Amortization of unrealized holding gains on securities transferred from available-for-sale to held-to-maturity		(1,777)	(1,594)	(3,915)	(4,931)
Related tax benefit		494	641	1,085	1,984
Reclassification of stranded tax effect to retained earnings for ASU 2018-02	[1]	0	0	(319)	0
Other comprehensive loss, net of tax		(21,545)	744	(106,938)	(7,796)
Comprehensive income		259,820	154,862	629,479	386,718
Comprehensive income attributable to noncontrolling interests		(6,548)	(5,498)	(28,841)	(21,218)
Comprehensive income attributable to SVBFG		$ 253,272	$ 149,364	$ 600,638	$ 365,500

[1] See "Adoption of New Accounting Standards" in Note 1—“Basis of Presentation” of the “Notes to Interim Consolidated Financial Statements (unaudited)” under Part I, Item 1 of this report for additional details.

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Interim Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands		Total	Common Stock	Additional Paid-in Capital	Retained Earnings		Accumulated Other Comprehensive Income (Loss)		Total SVBFG Stockholders’ Equity	Noncontrolling Interests
Balance (in shares) at Dec. 31, 2016			52,254,074
Balance at Dec. 31, 2016		$ 3,777,037	$ 52	$ 1,242,741	$ 2,376,331		$ 23,430		$ 3,642,554	$ 134,483
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock issued under employee benefit plans, net of restricted stock cancellations (in shares)			458,742
Common stock issued under employee benefit plans, net of restricted stock cancellations		14,192	$ 1	14,191					14,192
Common stock issued under ESOP (in shares)			10,838
Common stock issued under ESOP		2,094		2,094					2,094
Net income		394,514			373,296				373,296	21,218
Capital calls and distributions, net		(18,216)								(18,216)
Net change in unrealized gains and losses on AFS securities, net of tax		(7,491)					(7,491)		(7,491)
Amortization of unrealized holding gains on securities transferred from AFS to HTM, net of tax		(2,947)					(2,947)		(2,947)
Foreign currency translation adjustments, net of tax		2,642					2,642		2,642
Share-based compensation, net		35,473		35,473					35,473
Reclassification of stranded tax effect for ASU 2018-02	[1]	0
Balance (in shares) at Sep. 30, 2017			52,723,654
Balance at Sep. 30, 2017		4,197,298	$ 53	1,294,499	2,749,627		15,634		4,059,813	137,485
Balance (in shares) at Jun. 30, 2017			52,684,159
Balance at Jun. 30, 2017		4,040,035	$ 53	1,283,485	2,601,007		14,890		3,899,435	140,600
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock issued under employee benefit plans, net of restricted stock cancellations (in shares)			39,495
Common stock issued under employee benefit plans, net of restricted stock cancellations		2,370	$ 0	2,370					2,370
Net income		154,118			148,620				148,620	5,498
Capital calls and distributions, net		(8,613)								(8,613)
Net change in unrealized gains and losses on AFS securities, net of tax		556					556		556
Amortization of unrealized holding gains on securities transferred from AFS to HTM, net of tax		(953)					(953)		(953)
Foreign currency translation adjustments, net of tax		1,141					1,141		1,141
Share-based compensation, net		8,644		8,644					8,644
Reclassification of stranded tax effect for ASU 2018-02	[1]	0
Balance (in shares) at Sep. 30, 2017			52,723,654
Balance at Sep. 30, 2017		4,197,298	$ 53	1,294,499	2,749,627		15,634		4,059,813	137,485
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cumulative adjustment for ASU, net of tax | Accounting Standards Update 2014-09	[2]	(5,802)			(5,802)				(5,802)
Cumulative adjustment for ASU, net of tax | Accounting Standards Update 2016-01	[2]	74,595			103,766		(29,171)		74,595
Balance (in shares) at Dec. 31, 2017			52,835,188
Balance at Dec. 31, 2017		4,319,415	$ 53	1,314,377	2,866,837		(1,472)		4,179,795	139,620
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock issued under employee benefit plans, net of restricted stock cancellations (in shares)			405,395
Common stock issued under employee benefit plans, net of restricted stock cancellations		9,108	$ 0	9,108					9,108
Common stock issued under ESOP (in shares)			9,672
Common stock issued under ESOP		2,577		2,577					2,577
Net income		736,417			707,576				707,576	28,841
Capital calls and distributions, net		(22,785)								(22,785)
Net change in unrealized gains and losses on AFS securities, net of tax		(70,763)					(70,763)		(70,763)
Amortization of unrealized holding gains on securities transferred from AFS to HTM, net of tax		(2,830)					(2,830)		(2,830)
Foreign currency translation adjustments, net of tax		(3,855)					(3,855)		(3,855)
Share-based compensation, net		33,968		33,968					33,968
Reclassification of stranded tax effect for ASU 2018-02	[1]	319
Reclassification of stranded tax effect for ASU 2018-02 | Accounting Standards Update 2018-02		300			319	[2]	(319)	[2]
Balance (in shares) at Sep. 30, 2018			53,250,255
Balance at Sep. 30, 2018		5,070,045	$ 53	1,360,030	3,672,696		(108,410)		4,924,369	145,676
Balance (in shares) at Jun. 30, 2018			53,210,627
Balance at Jun. 30, 2018		4,804,841	$ 53	1,346,586	3,397,879		(86,865)		4,657,653	147,188
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock issued under employee benefit plans, net of restricted stock cancellations (in shares)			39,628
Common stock issued under employee benefit plans, net of restricted stock cancellations		1,943	$ 0	1,943					1,943
Net income		281,365			274,817				274,817	6,548
Capital calls and distributions, net		(8,060)								(8,060)
Net change in unrealized gains and losses on AFS securities, net of tax		(17,908)					(17,908)		(17,908)
Amortization of unrealized holding gains on securities transferred from AFS to HTM, net of tax		(1,283)					(1,283)		(1,283)
Foreign currency translation adjustments, net of tax		(2,354)					(2,354)		(2,354)
Share-based compensation, net		11,501		11,501					11,501
Reclassification of stranded tax effect for ASU 2018-02	[1]	0
Balance (in shares) at Sep. 30, 2018			53,250,255
Balance at Sep. 30, 2018		$ 5,070,045	$ 53	$ 1,360,030	$ 3,672,696		$ (108,410)		$ 4,924,369	$ 145,676

[1] See "Adoption of New Accounting Standards" in Note 1—“Basis of Presentation” of the “Notes to Interim Consolidated Financial Statements (unaudited)” under Part I, Item 1 of this report for additional details.

[2] See "Adoption of New Accounting Standards" in Note 1—“Basis of Presentation” of the “Notes to Interim Consolidated Financial Statements (unaudited)” under Part I, Item 1 of this report for additional details.

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Interim Consolidated Statements of Cash Flows - USD ($) $ in Thousands		9 Months Ended
		Sep. 30, 2018	Sep. 30, 2017
Cash flows from operating activities:
Net income before noncontrolling interests		$ 736,417	$ 394,514
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for credit losses		74,226	70,062
Gains on investment securities, net	[1]	(77,365)	(31,032)
Distributions of earnings from non-marketable and other equity securities	[1]	54,605	38,965
Depreciation and amortization		43,389	39,265
Amortization of premiums and discounts on investment securities, net		(252)	2,609
Amortization of share-based compensation		33,968	27,739
Amortization of deferred loan fees		(94,771)	(81,060)
Deferred income tax (benefit) expense		(16,532)	2,325
Excess tax benefit from exercise of stock options and vesting of restricted shares		(17,543)	(14,399)
Losses from the write-off of premises and equipment		7,117	0
Other gains		0	(6,150)
Changes in other assets and liabilities:
Accrued interest receivable and payable, net		(51,521)	(26,092)
Accounts receivable and payable, net		1,697	4,120
Income tax receivable and payable, net		(12,962)	30,069
Accrued compensation		5,505	(11,731)
Foreign exchange spot contracts, net		86,298	86,911
Other, net		(46,874)	16,410
Net cash provided by operating activities		703,904	521,073
Cash flows from investing activities:
Purchases of available-for-sale securities		(662,458)	(2,420,741)
Proceeds from sales of available-for-sale securities		0	7,311
Proceeds from maturities and paydowns of available-for-sale securities		2,529,666	2,434,039
Purchases of held-to-maturity securities		(4,726,595)	(3,812,782)
Proceeds from maturities and paydowns of held-to-maturity securities		1,482,204	1,283,764
Purchases of non-marketable and other securities		(56,435)	(18,766)
Proceeds from sales and distributions of capital of non-marketable and other securities	[1]	83,020	35,821
Net increase in loans		(4,356,980)	(2,263,600)
Purchases of premises and equipment		(28,718)	(35,470)
Proceeds from sale of equity valuation services business		0	3,000
Net cash used for investing activities		(5,736,296)	(4,787,424)
Cash flows from financing activities:
Net increase in deposits		4,342,036	5,832,165
Net increase (decrease) in short-term borrowings		1,597,522	(507,828)
Principal payments of long-term debt		0	(46,235)
(Distributions to noncontrolling interests), net of contributions from noncontrolling interests		(22,785)	(18,216)
Proceeds from issuance of common stock, ESPP and ESOP		11,685	16,286
Net cash provided by financing activities		5,928,458	5,276,172
Net increase in cash and cash equivalents		896,066	1,009,821
Cash and cash equivalents at beginning of period		2,923,075	2,545,750
Cash and cash equivalents at end of period		3,819,141	3,555,571
Cash paid during the period for:
Interest		54,681	41,324
Income taxes		277,388	190,706
Noncash items during the period:
Changes in unrealized gains and losses on available-for-sale securities, net of tax		(70,763)	(7,491)
Distributions of stock from investments		4,368	5,360
Equity warrant assets
Adjustments to reconcile net income to net cash provided by operating activities:
Changes in fair values of derivatives, net		(24,462)	(29,666)
Derivative
Adjustments to reconcile net income to net cash provided by operating activities:
Changes in fair values of derivatives, net		$ 2,964	$ 8,214

[1] During the first quarter of 2018 we adopted ASU 2016-15, Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments. This guidance was adopted on a retrospective basis and impacted the presentation between investing and operating activities related to distributions and net gains from our nonmarketable and other securities portfolio. See Note 1—“Basis of Presentation” of the “Notes to Interim Consolidated Financial Statements (unaudited)” under Part I, Item 1 of this report for additional details.

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Basis of Presentation

9 Months Ended

Sep. 30, 2018

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Basis of Presentation

Basis of Presentation

SVB Financial Group is a diversified financial services company, as well as a bank holding company and a financial holding company. SVB Financial was incorporated in the state of Delaware in March 1999. Through our various subsidiaries and divisions, we offer a variety of banking and financial products and services to support our clients of all sizes and stages throughout their life cycles. In these notes to our consolidated financial statements, when we refer to “SVB Financial Group,” “SVBFG," the “Company,” “we,” “our,” “us” or use similar words, we mean SVB Financial Group and all of its subsidiaries collectively, including Silicon Valley Bank (the “Bank”), unless the context requires otherwise. When we refer to “SVB Financial” or the “Parent” we are referring only to the parent company, SVB Financial Group (not including subsidiaries).

The accompanying unaudited interim consolidated financial statements reflect all adjustments of a normal and recurring nature that are, in the opinion of management, necessary to fairly present our financial position, results of operations and cash flows in accordance with GAAP. Such unaudited interim consolidated financial statements have been prepared in accordance with the instructions to Form 10-Q pursuant to the rules and regulations of the SEC. Certain information and footnote disclosures normally included in financial statements prepared in accordance with GAAP have been condensed or omitted pursuant to such rules and regulations. The results of operations for the three and nine months endedSeptember 30, 2018 are not necessarily indicative of results to be expected for any future periods. These unaudited interim consolidated financial statements should be read in conjunction with our Annual Report on Form 10-K for the year ended December 31, 2017 (“2017 Form 10-K”).

The accompanying unaudited interim consolidated financial statements have been prepared on a consistent basis with the accounting policies described in Consolidated Financial Statements and Supplementary Data—Note 2—“Summary of Significant Accounting Policies” under Part II, Item 8 of our 2017 Form 10-K.

The preparation of unaudited interim consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities at the date of the financial statements, and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. Estimates may change as new information is obtained. Significant items that are subject to such estimates include measurements of fair value, the valuation of non-marketable and other equity securities, the valuation of equity warrant assets, the adequacy of the allowance for loan losses and allowance for unfunded credit commitments, and the recognition and measurement of income tax assets and liabilities.

Principles of Consolidation and Presentation

Our consolidated financial statements include the accounts of SVB Financial Group and consolidated entities. We consolidate voting entities in which we have control through voting interests or entities through which we have a controlling financial interest in a variable interest entity (“VIE”). We determine whether we have a controlling financial interest in a VIE by determining if we have: (a) the power to direct the activities of the VIE that most significantly impact the entity’s economic performance, (b) the obligation to absorb the expected losses, or (c) the right to receive the expected returns of the entity. Generally, we have significant variable interests if our commitments to a limited partnership investment represent a significant amount of the total commitments to the entity. We also evaluate the impact of related parties on our determination of variable interests in our consolidation conclusions. We consolidate VIEs in which we are the primary beneficiary based on a controlling financial interest. If we are not the primary beneficiary of a VIE, we record our pro-rata interests based on our ownership percentage.

VIEs are entities where investors lack sufficient equity at risk for the entity to finance its activities without additional subordinated financial support or equity investors, as a group, lack one of the following characteristics: (a) the power to direct the activities that most significantly impact the entity’s economic performance, (b) the obligation to absorb the expected losses of the entity, or (c) the right to receive the expected returns of the entity. We assess VIEs to determine if we are the primary beneficiary of a VIE.  A primary beneficiary is defined as a variable interest holder that has a controlling financial interest. A controlling financial interest requires both: (a) power to direct the activities that most significantly impact the VIE’s economic performance, and (b) obligation to absorb losses or receive benefits of a VIE that could potentially be significant to a VIE. Under this analysis, we also evaluate kick-out rights and other participating rights which could provide us a controlling financial interest. The primary beneficiary of a VIE is required to consolidate the VIE.

We also evaluate fees paid to managers of our limited partnership investments. We exclude those fee arrangements that are not deemed to be variable interests from the analysis of our interests in our investments in VIEs and the determination of a primary beneficiary, if any. Fee arrangements based on terms that are customary and commensurate with the services provided are deemed not to be variable interests and are, therefore, excluded.

All significant intercompany accounts and transactions with consolidated entities have been eliminated. We have not provided financial or other support during the periods presented to any VIE that we were not previously contractually required to provide.

Adoption of New Accounting Standards

In May 2014, the FASB issued a new accounting standard update (ASU 2014-09, Revenue from Contracts with Customers (Topic 606)), which provides revenue recognition guidance that is intended to create greater consistency with respect to how and when revenue from contracts with customers is shown in the income statement. The guidance requires that revenue from contracts with customers be recognized when transfer of control over goods or services is passed to customers in the amount of consideration expected to be received. Subsequent Accounting Standard Updates have been issued clarifying the original pronouncement (ASU 2016-08, ASU 2016-10, ASU 2016-12 and ASU 2016-20).

On January 1, 2018, we adopted the new accounting standard ASU 2014-09, Revenue from Contracts with Customers and all the related amendments ("new revenue standard," "ASC 606" or "ASU 2014-09") using the modified retrospective method applied to those contracts which were not completed as of January 1, 2018. We elected to apply the practical expedient which allows us to expense costs related to obtaining contracts as incurred because the amortization period would have been one year or less. We recognized the cumulative effect of initially applying the new revenue standard as an adjustment to the opening balance of retained earnings. The comparative information has not been restated and continues to be reported under the accounting standards in effect for those periods.

We completed a comprehensive scoping exercise to determine the revenue streams that are within the scope of this guidance. The scope of this guidance explicitly excludes net interest income, including interest income earned from our loan and fixed income securities portfolios, as well as certain other noninterest income earned from our lending-, investment- and derivative-related activities. Based on our completed assessment, we did not identify any material changes to the timing or the amounts of our revenue recognition, however, we identified a change in the timing of recognizing fund management fees in other noninterest income for a portion of our SVB Capital funds. Fund management fees for these certain SVB Capital funds will now be recognized at the time of distribution which typically occurs later in the life of the fund than had been previously recognized. The cumulative adjustment to retained earnings associated with this change was $5.8 million, net of tax, with an immaterial impact to our net income on an ongoing basis. The impacts to net income as a result of applying the new revenue standard were decreases of $0.5 million and $1.4 million for the three and nine months endedSeptember 30, 2018, respectively.

The timing of revenue recognition may differ from the timing of cash settlements or invoicing to customers. We record a receivable when revenue is recognized prior to invoicing, and unearned revenue when revenue is recognized subsequent to receipt of consideration.These assets and liabilities are reported on the consolidated balance sheets on a contract-by-contract basis at the end of each reporting period. During the three and nine months endedSeptember 30, 2018, changes in our contract assets, contract liabilities and receivables were not material. Additionally, revenues recognized during the three and nine months endedSeptember 30, 2018 that were included in the corresponding contract liability balance at the beginning of the period were not material.

The cumulative effect of the changes to our consolidated balance sheets at January 1, 2018, for the adoption of the new revenue standard were as follows:

(Dollars in thousands)	Balance at December 31, 2017		Adjustments Due to Adoption of ASC 606			Balance at January 1, 2018
Accrued interest receivable and other assets:
Accounts receivable	$	55,946	$	(34,340	)	$	21,606
Other liabilities:
Deferred revenue	27,057		(26,321		)	736
Current taxes payable	4,675		(2,217		)	2,458
Stockholders' Equity:
Retained earnings	2,866,837		(5,802		)	2,861,035

In accordance with the new revenue standard requirements, the disclosure of the impact of adoption on our consolidated balance sheets at September 30, 2018 and our statements of income for the three and nine months endedSeptember 30, 2018, were as follows:

	September 30, 2018
(Dollars in thousands)	As Reported		Balances Without Adoption of ASC 606			Effect of Change Higher/(Lower)
Accrued interest receivable and other assets:
Accounts receivable	$	61,090	$	100,470		$	(39,380	)
Other liabilities:
Deferred fees	556		28,379			(27,823		)
Current taxes payable (receivable)	2,002		(694		)	2,696
Stockholders' Equity:
Retained earnings	3,672,696		3,678,020			(5,324		)

	Three months ended September 30, 2018
(Dollars in thousands)	As Reported		Balances Without Adoption of ASC 606		Effect of Change Higher/(Lower)
Other noninterest income:
Fund management fees	$	5,479	$	6,087	$	(608	)
Income tax expense	95,308		95,463		(155		)
Net Income available to common stockholders	274,817		275,270		(453		)
Diluted earnings per share	5.10		5.11		(0.01		)

	Nine months ended September 30, 2018
(Dollars in thousands)	As Reported		Balances Without Adoption of ASC 606		Effect of Change Higher/(Lower)
Other noninterest income:
Fund management fees	$	17,144	$	19,001	$	(1,857	)
Income tax expense	246,561		247,040		(479		)
Net Income available to common stockholders	707,576		708,954		(1,378		)
Diluted earnings per share	13.15		13.18		(0.03		)

In February 2018, the FASB issued a new accounting standard update (ASU 2018-02, Income Statement - Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income (ASU "2018-02")) to address certain stranded income tax effects in accumulated other comprehensive income ("AOCI") resulting from H.R.1, known as the Tax Cuts and Jobs Act (the "TCJ Act"). ASU 2018-02 changed current accounting whereby an entity may elect to reclassify the stranded tax effect from AOCI to retained earnings in each period in which the effect of the change in the U.S. federal corporate income tax rate in the TCJ Act (or portion thereof) is recorded. ASU 2018-02 is effective for periods beginning after December 15, 2018 and early adoption is permitted. We have elected to early adopt ASU 2018-02 and reclassified approximately $0.3 millionfrom accumulated other comprehensive income to retained earnings within our consolidated statements of stockholders' equity in the first quarter of 2018.

On January 1, 2018, we adopted the new accounting standard update ASU 2016-01, Recognition and Measurement of Financial Assets and Financial Liabilities (Topic 825), which addresses certain aspects of recognition, measurement, presentation and disclosure of financial instruments. This guidance requires equity investments (except those accounted for under the equity method of accounting) to be measured at fair value with changes in fair value recognized in net income. We adopted this guidance using the modified retrospective method and our equity investments carried at cost with readily determinable fair values were re-measured at fair value and the difference between cost and fair value was recorded as a cumulative-effect adjustment to opening retained earnings as of January 1, 2018. The adjustment to opening retained earnings for these investments was $74.6 million, net of tax, with subsequent changes in the fair value of these equity securities recorded as unrealized gains or losses in our consolidated statements of income. Additionally, in accordance with this guidance, net unrealized gains of $29.2 million, net of tax, included in accumulated other comprehensive income on January 1, 2018, related to our previously reported available-for-sale equity securities, were reclassified as an adjustment to retained earnings. Subsequent changes in the fair value of these equity securities were recorded as unrealized gains or losses in our consolidated statements of income. Furthermore, for purposes of disclosing the fair value of loans carried at amortized cost, our valuation methodology was updated to conform to an “exit price” concept as required by the standard update, resulting in an immaterial change in the fair value.

In August 2016, the FASB issued a new accounting standard update (ASU 2016-15, Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments), which clarifies the guidance on eight specific cash flow issues. We adopted the new accounting standard, specifically as it relates to distributions from our equity method investments, on January 1, 2018. We elected to adopt the nature of distribution approach and applied the guidance retrospectively. The new guidance had an immaterial impact on the presentation between investing and operating activities within our statements of cash flows related to distributions and net gains from our nonmarketable and other securities portfolio.

In November 2016, the FASB issued a new accounting standard update (ASU 2016-18, Statement of Cash Flows (Topic 230): Restricted Cash), which requires that a statement of cash flows explains the change during the period in the total cash, cash equivalents, and amounts generally described as restricted cash or restricted cash equivalents.  Therefore, amounts generally described as restricted cash and restricted cash equivalents should be included with cash and cash equivalents when reconciling the beginning of period and end of period total amounts shown on the statement of cash flows.  Previous to the update, there had been some diversity in practice.  Given that we had already classified restricted cash such as cash reserves at the Federal Reserve as part of cash and cash equivalents on the cash flow statement, the update had no impact on how we were already reporting and presenting our statement of cash flows.

Recent Accounting Pronouncements

In February 2016, the FASB issued a new accounting standard update (ASU 2016-02, Leases (Topic 842)), which will require for all operating leases the recognition of a right-of-use asset and a corresponding lease liability, in the statement of financial position. The lease cost will be allocated over the lease term on a straight-line basis. There were further amendments, including practical expedients, with the issuance of ASU 2018-01, “Leases (Topic 842): Land Easement Practical Expedient for Transition to Topic 842” in January 2018. In July 2018 the FASB issued ASU No. 2018-11, "Leases (Topic 842): Targeted Improvements," which provides us with the option to apply the new leasing standard to all open leases as of the adoption date, on a prospective basis. This guidance will be effective on January 1, 2019, with early adoption permitted. We plan to adopt the lease accounting guidance on January 1, 2019, on a prospective basis. We intend to elect the transition "package of expedients" which will result in continuing to account for existing leases for which the commencement date is before January 1, 2019, in accordance with Leases (Topic 840) throughout the lease term, including periods after adoption of the new guidance. We expect the adoption of this standard to have an impact of less than one percent of total assets and liabilities on our consolidated balance sheets reflective of the recognition of right-of-use assets and related lease liabilities associated predominantly with noncancelable operating leases. In addition, we do not expect the adoption of this guidance to have a material impact on our consolidated statements of income.

In June 2016, the FASB issued a new accounting standard update (ASU 2016-13, Financial Instruments- Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments), which amends the incurred loss impairment methodology in current GAAP with a methodology that reflects expected credit losses over the life of the loan and requires consideration of a broader range of reasonable and supportable information to inform credit loss estimates. This guidance will be effective January 1, 2020, on a modified retrospective approach, with early adoption permitted, but not before January 1, 2019. We currently have a project team in place and subject matter experts to assist with our review of key interpretive issues and the assessment of our existing credit loss forecasting models and processes against the new guidance to determine what modifications may be required. We are currently evaluating the impact this guidance will have on our financial position, results of operation and stockholders’ equity.

In August 2017, the FASB issued a new accounting standard update (ASU 2017-12, Targeted Improvements to Accounting for Hedging Activities (Topic 815)), which better aligns an entity’s risk management activities and financial reporting for hedging relationships through changes to the designation and measurement guidance for qualifying hedging relationships and the presentation of hedge results. The targeted improvements in the ASU will allow increased flexibility to structure hedges of fixed rate instruments and floating rate instruments. Application of the ASU is expected to reduce the amount of ineffectiveness as the revised accounting guidance will better reflect the economics of risk management activities and will also reduce the volatility associated with foreign currency hedging. The ASU requires the hedging instrument to be presented in the same line item as the hedged item and requires expanded disclosures. There were further amendments, with the issuance of ASU 2018-16, “Derivatives and Hedging (Topic 815)," which provides us with the option to use the Overnight Index Swap ("OIS") rate based on the Secured Overnight Financing Rate ("SOFR") as a U.S. benchmark interest rate for purposes of applying hedge accounting under Topic 815. This guidance will be effective January 1, 2019, with early adoption permitted. We plan to early adopt this guidance in the fourth quarter of 2018, effective October 1, 2018. The accounting standard will not have a material impact on our consolidated financial position, results of operations or the disclosures in our Notes to the Consolidated Financial Statements.

In August 2018, the FASB issued a new accounting standard update (ASU No. 2018-13, Fair Value Measurement (Topic 820): Disclosure Framework - Changes to the Disclosure Requirements for Fair Value Measurement). The ASU primarily modifies certain disclosures with respect to Level 3 fair value measurements. This guidance will be effective January 1, 2020, with early adoption permitted. This guidance will not have an impact on our consolidated financial position or results of operations, and we do not expect the adoption of this standard to have a material impact on the disclosures in our Notes to the Consolidated Financial Statements.

Reclassifications

Certain prior period amounts, primarily related to the adoption of new accounting guidance, have been reclassified to conform to current period presentations.

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Stockholders' Equity and EPS

9 Months Ended

Sep. 30, 2018

Equity and Earnings Per Share [Abstract]

Stockholders' Equity and EPS

Stockholders' Equity and EPS

Accumulated Other Comprehensive Income

The following table summarizes the items reclassified out of accumulated other comprehensive income into the Consolidated Statements of Income (unaudited) for the three and nine months endedSeptember 30, 2018 and 2017:

		Three months ended September 30,					Nine months ended September 30,
(Dollars in thousands)	Income Statement Location	2018		2017			2018		2017
Reclassification adjustment for losses (gains) included in net income (1)	Gains on investment securities, net	$	—	$	101		$	—	$	(384	)
Related tax (benefit) expense (1)	Income tax expense	—		(41		)	—		157
Total reclassification adjustment for losses (gains) included in net income, net of tax (1)		$	—	$	60		$	—	$	(227	)

(1) See "Adoption of New Accounting Standards" in Note 1—“Basis of Presentation” of the “Notes to Interim Consolidated Financial Statements (unaudited)” under Part I, Item 1 of this report for additional details.

EPS

Basic EPS is the amount of earnings available to each share of common stock outstanding during the reporting period. Diluted EPS is the amount of earnings available to each share of common stock outstanding during the reporting period adjusted to include the effect of potentially dilutive common shares. Potentially dilutive common shares include incremental shares issuable for stock options and restricted stock units outstanding under our 2006 Equity Incentive Plan and our ESPP. Potentially dilutive common shares are excluded from the computation of dilutive EPS in periods in which the effect would be antidilutive. The following is a reconciliation of basic EPS to diluted EPS for the three and nine months endedSeptember 30, 2018 and 2017:

	Three months ended September 30,				Nine months ended September 30,
(Dollars and shares in thousands, except per share amounts)	2018		2017		2018		2017
Numerator:
Net income available to common stockholders	$	274,817	$	148,620	$	707,576	$	373,296
Denominator:
Weighted average common shares outstanding—basic	53,235		52,705		53,062		52,530
Weighted average effect of dilutive securities:
Stock options and ESPP	383		343		404		381
Restricted stock units	301		257		334		319
Weighted average common shares outstanding—diluted	53,919		53,305		53,800		53,230
Earnings per common share:
Basic	$	5.16	$	2.82	$	13.33	$	7.11
Diluted	5.10		2.79		13.15		7.01

The following table summarizes the weighted-average common shares excluded from the diluted EPS calculation due to the antidilutive effect for the three and nine months endedSeptember 30, 2018 and 2017:

	Three months ended September 30,		Nine months ended September 30,
(Shares in thousands)	2018	2017	2018	2017
Stock options	86	112	49	61
Restricted stock units	5	5	71	2
Total	91	117	120	63

Consolidated Statement of Changes in Equity

The following table summarizes the changes in our consolidated equity for the three months ended September 30, 2018 and 2017:

	Common Stock			Additional Paid-in Capital		Retained Earnings		Accumulated Other Comprehensive Income (Loss)			Total SVBFG Stockholders’ Equity			Noncontrolling Interests			Total Equity
(Dollars in thousands)	Shares	Amount
Balance at June 30, 2017	52,684,159	$	53	$	1,283,485	$	2,601,007	$	14,890		$	3,899,435		$	140,600		$	4,040,035
Common stock issued under employee benefit plans, net of restricted stock cancellations	39,495	—		2,370		—		—			2,370			—			2,370
Net income	—	—		—		148,620		—			148,620			5,498			154,118
Capital calls and distributions, net	—	—		—		—		—			—			(8,613		)	(8,613		)
Net change in unrealized gains and losses on AFS securities, net of tax	—	—		—		—		556			556			—			556
Amortization of unrealized holding gains on securities transferred from AFS to HTM, net of tax	—	—		—		—		(953		)	(953		)	—			(953		)
Foreign currency translation adjustments, net of tax	—	—		—		—		1,141			1,141			—			1,141
Share-based compensation, net	—	—		8,644		—		—			8,644			—			8,644
Balance at September 30, 2017	52,723,654	$	53	$	1,294,499	$	2,749,627	$	15,634		$	4,059,813		$	137,485		$	4,197,298
Balance at June 30, 2018	53,210,627	$	53	$	1,346,586	$	3,397,879	$	(86,865	)	$	4,657,653		$	147,188		$	4,804,841
Common stock issued under employee benefit plans, net of restricted stock cancellations	39,628	—		1,943		—		—			1,943			—			1,943
Net income	—	—		—		274,817		—			274,817			6,548			281,365
Capital calls and distributions, net	—	—		—		—		—			—			(8,060		)	(8,060		)
Net change in unrealized gains and losses on AFS securities, net of tax	—	—		—		—		(17,908		)	(17,908		)	—			(17,908		)
Amortization of unrealized holding gains on securities transferred from AFS to HTM, net of tax	—	—		—		—		(1,283		)	(1,283		)	—			(1,283		)
Foreign currency translation adjustments, net of tax	—	—		—		—		(2,354		)	(2,354		)	—			(2,354		)
Share-based compensation, net	—	—		11,501		—		—			11,501			—			11,501
Balance at September 30, 2018	53,250,255	$	53	$	1,360,030	$	3,672,696	$	(108,410	)	$	4,924,369		$	145,676		$	5,070,045

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Share-Based Compensation

9 Months Ended

Sep. 30, 2018

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Share-Based Compensation

Share-Based Compensation

For the three and nine months endedSeptember 30, 2018 and 2017, we recorded share-based compensation and related tax benefits as follows:

	Three months ended September 30,						Nine months ended September 30,
(Dollars in thousands)	2018			2017			2018			2017
Share-based compensation expense	$	11,501		$	8,644		$	33,968		$	27,739
Income tax benefit related to share-based compensation expense	(2,895		)	(3,154		)	(7,955		)	(9,518		)

Unrecognized Compensation Expense

As of September 30, 2018, unrecognized share-based compensation expense was as follows:

(Dollars in thousands)	Unrecognized   Expense		Weighted Average Expected Recognition Period  - in Years
Stock options	$	13,525	2.91
Restricted stock units	73,037		2.74
Total unrecognized share-based compensation expense	$	86,562

Share-Based Payment Award Activity

The table below provides stock option information related to the 2006 Equity Incentive Plan for the nine months endedSeptember 30, 2018:

	Options		Weighted Average  Exercise Price		Weighted Average Remaining Contractual Life - in Years	Aggregate   Intrinsic Value   of In-The- Money Options
Outstanding at December 31, 2017	808,049		$	105.68
Granted	89,616		305.71
Exercised	(191,585	)	83.37
Forfeited	(9,498	)	187.76
Expired	(2,337	)	60.37
Outstanding at September 30, 2018	694,245		136.68		3.76	$	120,932,288
Vested and expected to vest at September 30, 2018	673,674		134.25		3.70	118,982,041
Exercisable at September 30, 2018	415,993		99.63		2.66	87,856,349

The aggregate intrinsic value of outstanding options shown in the table above represents the pre-tax intrinsic value based on our closing stock price of $310.83 as of September 30, 2018. The total intrinsic value of options exercised during the three and nine months endedSeptember 30, 2018 was $8.5 million and $39.5 million, respectively, compared to $3.8 million and $25.8 million for the comparable 2017 periods.

The table below provides information for restricted stock units under the 2006 Equity Incentive Plan for the nine months endedSeptember 30, 2018:

	Shares		Weighted Average Grant Date Fair Value
Nonvested at December 31, 2017	637,667		$	135.86
Granted	193,405		302.53
Vested	(213,944	)	130.20
Forfeited	(37,080	)	170.97
Nonvested at September 30, 2018	580,048		191.28

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Variable Interest Entities

9 Months Ended

Sep. 30, 2018

Investments In Variable Interest Entities [Abstract]

Variable Interest Entities

Variable Interest Entities

Our involvement with VIEs includes our investments in venture capital and private equity funds, debt funds, private and public portfolio companies and our investments in qualified affordable housing projects.

The following table presents the carrying amounts and classification of significant variable interests in consolidated and unconsolidated VIEs as of September 30, 2018 and December 31, 2017:

(Dollars in thousands)	Consolidated VIEs		Unconsolidated VIEs		Maximum Exposure to Loss in Unconsolidated VIEs
September 30, 2018:
Assets:
Cash and cash equivalents	$	5,470	$	—	$	—
Non-marketable and other equity securities (1)	212,514		524,812		524,812
Accrued interest receivable and other assets	298		—		—
Total assets	$	218,282	$	524,812	$	524,812
Liabilities:
Other liabilities (1)	680		166,867		—
Total liabilities	$	680	$	166,867	$	—
December 31, 2017:
Assets:
Cash and cash equivalents	$	6,674	$	—	$	—
Non-marketable and other equity securities (1)	190,562		346,097		346,097
Accrued interest receivable and other assets	365		—		—
Total assets	$	197,601	$	346,097	$	346,097
Liabilities:
Other liabilities (1)	990		100,891		—
Total liabilities	$	990	$	100,891	$	—

(1) Included in our unconsolidated non-marketable and other equity securities portfolio at September 30, 2018 and December 31, 2017 are investments in qualified affordable housing projects of $261.7 million and $174.2 million, respectively, and related other liabilities consisting of unfunded credit commitments of $166.9 million and $100.9 million, respectively.

Non-marketable and other equity securities

Our non-marketable and other equity securities portfolio primarily represents investments in venture capital and private equity funds, SPD Silicon Valley Bank Co., Ltd. (the Bank's joint venture bank in China (“SPD-SVB”)), debt funds, private and public portfolio companies and investments in qualified affordable housing projects. A majority of these investments are through third- party funds held by SVB Financial in which we do not have controlling or significant variable interests. These investments represent our unconsolidated VIEs in the table above. Our non-marketable and other equity securities portfolio also includes investments from SVB Capital. SVB Capital is the funds management business of SVB Financial Group, which focuses primarily on venture capital investments. The SVB Capital family of funds is comprised of direct venture funds that invest in companies and funds of funds that invest in other venture capital funds. We have a controlling and significant variable interest in four of these SVB Capital funds and consolidate these funds for financial reporting purposes.

All investments are generally nonredeemable and distributions are expected to be received through the liquidation of the underlying investments throughout the life of the investment fund. Investments may only be sold or transferred subject to the notice and approval provisions of the underlying investment agreement. Subject to applicable regulatory requirements, including the Volcker Rule, we also make commitments to invest in venture capital and private equity funds. For additional details, see Note 13—“Off-Balance Sheet Arrangements, Guarantees and Other Commitments” of the “Notes to Interim Consolidated Financial Statements (unaudited)” under Part I, Item 1 of this report.

The Bank also has variable interests in low income housing tax credit funds, in connection with fulfilling its responsibilities under the Community Reinvestment Act (“CRA”), that are designed to generate a return primarily through the realization of federal tax credits. These investments are typically limited partnerships in which the general partner, other than the Bank, holds the power over significant activities of the VIE; therefore, these investments are not consolidated. For additional information on our investments in qualified affordable housing projects, see Note 6—“Investment Securities" of the “Notes to Interim Consolidated Financial Statements (unaudited)” under Part I, Item 1 of this report.

As of September 30, 2018, our exposure to loss with respect to the consolidated VIEs is limited to our net assets of $217.6 million and our exposure to loss for our unconsolidated VIEs is equal to our investment in these assets of $524.8 million.

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Cash and Cash Equivalents

9 Months Ended

Sep. 30, 2018

Cash and Cash Equivalents [Abstract]

Cash and Cash Equivalents

Cash and Cash Equivalents

The following table details our cash and cash equivalents at September 30, 2018 and December 31, 2017:

(Dollars in thousands)	September 30, 2018		December 31, 2017
Cash and due from banks (1)	$	3,697,018	$	2,672,290
Securities purchased under agreements to resell (2)	119,181		247,876
Other short-term investment securities	2,942		2,909
Total cash and cash equivalents	$	3,819,141	$	2,923,075

(1) At September 30, 2018 and December 31, 2017, $2.1 billion and $0.6 billion, respectively, of our cash and due from banks was deposited at the Federal Reserve Bank and was earning interest at the Federal Funds target rate, and interest-earning deposits in other financial institutions were $1.1 billion at both September 30, 2018 and December 31, 2017.

(2) At September 30, 2018 and December 31, 2017, securities purchased under agreements to resell were collateralized by U.S. Treasury securities and U.S. agency securities with aggregate fair values of$124.5 millionand $252.8 million, respectively. None of these securities were sold or repledged as of September 30, 2018 and December 31, 2017.

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Investment Securities

9 Months Ended

Sep. 30, 2018

Investments, Debt and Equity Securities [Abstract]

Investment Securities

Investment Securities

Our investment securities portfolio consists of: (i) an available-for-sale securities portfolio and a held-to-maturity securities portfolio, both of which represent interest-earning investment securities, and (ii) a non-marketable and other equity securities portfolio, which primarily represents investments managed as part of our funds management business as well as public equity securities held as a result of equity warrant assets exercised.

Available-for-Sale Securities

The components of our available-for-sale investment securities portfolio at September 30, 2018 and December 31, 2017 are as follows:

	September 30, 2018
(Dollars in thousands)	Amortized Cost		Unrealized Gains		Unrealized Losses			Carrying Value
Available-for-sale securities, at fair value:
U.S. Treasury securities	$	5,560,828	$	117	$	(59,071	)	$	5,501,874
U.S. agency debentures	1,357,069		—		(10,397		)	1,346,672
Residential mortgage-backed securities:
Agency-issued collateralized mortgage obligations—fixed rate	2,001,048		3		(80,510		)	1,920,541
Agency-issued collateralized mortgage obligations—variable rate	317,356		1,297		(131		)	318,522
Total available-for-sale securities	$	9,236,301	$	1,417	$	(150,109	)	$	9,087,609

	December 31, 2017
(Dollars in thousands)	Amortized Cost		Unrealized Gains		Unrealized Losses			Carrying Value
Available-for-sale securities, at fair value:
U.S. Treasury securities	$	6,865,068	$	1,113	$	(25,679	)	$	6,840,502
U.S. agency debentures	1,569,195		3,569		(5,636		)	1,567,128
Residential mortgage-backed securities:
Agency-issued collateralized mortgage obligations—fixed rate	2,292,311		258		(25,534		)	2,267,035
Agency-issued collateralized mortgage obligations—variable rate	372,481		1,375		(126		)	373,730
Equity securities	31,953		40,525		(209		)	72,269
Total available-for-sale securities	$	11,131,008	$	46,840	$	(57,184	)	$	11,120,664

The following table summarizes sale activity of available-for-sale securities during the three and nine months endedSeptember 30, 2018 and 2017 as recorded in the line item “Gains on investment securities, net," a component of noninterest income:

	Three months ended September 30,					Nine months ended September 30,
(Dollars in thousands)	2018		2017			2018		2017
Sales proceeds	$	—	$	2,287		$	—	$	7,311
Net realized gains and losses:
Gross realized gains	—		38			—		1,131
Gross realized losses	—		(139		)	—		(747		)
Net realized (losses) gains	$	—	$	(101	)	$	—	$	384

The following tables summarize our unrealized losses on our available-for-sale securities portfolio into categories of less than 12 months, or 12 months or longer as of September 30, 2018 and December 31, 2017:

	September 30, 2018
	Less than 12 months					12 months or longer					Total
(Dollars in thousands)	Fair Value of Investments		Unrealized Losses			Fair Value of Investments		Unrealized Losses			Fair Value of Investments		Unrealized Losses
Available-for-sale securities:
U.S. Treasury securities	$	3,915,282	$	(46,503	)	$	1,438,839	$	(12,568	)	$	5,354,121	$	(59,071	)
U.S. agency debentures	838,609		(4,615		)	508,062		(5,782		)	1,346,671		(10,397		)
Residential mortgage-backed securities:
Agency-issued collateralized mortgage obligations—fixed rate	812,726		(30,350		)	1,103,803		(50,160		)	1,916,529		(80,510		)
Agency-issued collateralized mortgage obligations—variable rate	14,076		(5		)	49,729		(126		)	63,805		(131		)
Total temporarily impaired securities (1)	$	5,580,693	$	(81,473	)	$	3,100,433	$	(68,636	)	$	8,681,126	$	(150,109	)

(1) As of September 30, 2018, we identified a total of 265 investments that were in unrealized loss positions, of which 109 investments totaling $3.1 billion with unrealized losses of $68.6 million have been in an impaired position for a period of time greater than 12 months. As of September 30, 2018, we do not intend to sell any of our impaired securities prior to recovery of our adjusted cost basis, and it is more likely than not that we will not be required to sell any of our securities prior to recovery of our adjusted cost basis. Based on our analysis as of September 30, 2018, we deem all impairments to be temporary, and therefore changes in value for our temporarily impaired securities as of the same date are included in other comprehensive income. Market valuations and impairment analyses on assets in the available-for-sale securities portfolio are reviewed and monitored on a quarterly basis.

	December 31, 2017
	Less than 12 months					12 months or longer					Total
(Dollars in thousands)	Fair Value of Investments		Unrealized Losses			Fair Value of Investments		Unrealized Losses			Fair Value of Investments		Unrealized Losses
Available-for-sale securities:
U.S. Treasury securities	$	5,968,914	$	(23,397	)	$	323,966	$	(2,282	)	$	6,292,880	$	(25,679	)
U.S. agency debentures	736,541		(2,289		)	336,196		(3,347		)	1,072,737		(5,636		)
Residential mortgage-backed securities:
Agency-issued collateralized mortgage obligations—fixed rate	2,193,277		(25,534		)	—		—			2,193,277		(25,534		)
Agency-issued collateralized mortgage obligations—variable rate	13,843		(3		)	53,186		(123		)	67,029		(126		)
Equity securities	624		(209		)	—		—			624		(209		)
Total temporarily impaired securities (1)	$	8,913,199	$	(51,432	)	$	713,348	$	(5,752	)	$	9,626,547	$	(57,184	)

(1) As of December 31, 2017, we identified a total of 268 investments that were in unrealized loss positions, of which 46 investments totaling $713.3 million with unrealized losses of $5.8 million have been in an impaired position for a period of time greater than 12 months.

The following table summarizes the fixed income securities, carried at fair value, classified as available-for-sale as of September 30, 2018 by the remaining contractual principal maturities. For U.S. Treasury securities and U.S. agency debentures, the expected maturity is the actual contractual maturity of the notes. Expected maturities for mortgage-backed securities may differ significantly from their contractual maturities because mortgage borrowers have the right to prepay outstanding loan obligations with or without penalties. Mortgage-backed securities classified as available-for-sale typically have original contractual maturities from 10 to 30 years whereas expected average lives of these securities tend to be significantly shorter and vary based upon structure and prepayments in lower interest rate environments.

	September 30, 2018
(Dollars in thousands)	Total		One Year or Less		After One Year to Five Years		After Five Years to Ten Years		After Ten Years
U.S. Treasury securities	$	5,501,874	$	2,016,438	$	3,047,620	$	437,816	$	—
U.S. agency debentures	1,346,672		653,271		693,401		—		—
Residential mortgage-backed securities:
Agency-issued collateralized mortgage obligations—fixed rate	1,920,541		—		—		29,113		1,891,428
Agency-issued collateralized mortgage obligations—variable rate	318,522		—		—		—		318,522
Total	$	9,087,609	$	2,669,709	$	3,741,021	$	466,929	$	2,209,950

Held-to-Maturity Securities

The components of our held-to-maturity investment securities portfolio at September 30, 2018 and December 31, 2017 are as follows:

	September 30, 2018
(Dollars in thousands)	Amortized Cost		Unrealized Gains		Unrealized Losses			Fair Value
Held-to-maturity securities, at cost:
U.S. agency debentures (1)	$	641,134	$	85	$	(18,482	)	$	622,737
Residential mortgage-backed securities:
Agency-issued mortgage-backed securities	8,333,088		2		(276,748		)	8,056,342
Agency-issued collateralized mortgage obligations—fixed rate	2,329,065		—		(98,559		)	2,230,506
Agency-issued collateralized mortgage obligations—variable rate	223,374		667		(32		)	224,009
Agency-issued commercial mortgage-backed securities	2,795,952		—		(78,688		)	2,717,264
Municipal bonds and notes	1,577,113		161		(55,894		)	1,521,380
Total held-to-maturity securities	$	15,899,726	$	915	$	(528,403	)	$	15,372,238

(1) Consists of pools of Small Business Investment Company debentures issued and guaranteed by the U.S. Small Business Administration, an independent agency of the United States.

	December 31, 2017
(Dollars in thousands)	Amortized Cost		Unrealized Gains		Unrealized Losses			Fair Value
Held-to-maturity securities, at cost:
U.S. agency debentures (1)	$	659,979	$	3,167	$	(1,601	)	$	661,545
Residential mortgage-backed securities:
Agency-issued mortgage-backed securities	6,304,969		4,854		(43,528		)	6,266,295
Agency-issued collateralized mortgage obligations—fixed rate	2,829,979		23		(54,372		)	2,775,630
Agency-issued collateralized mortgage obligations—variable rate	255,782		733		(34		)	256,481
Agency-issued commercial mortgage-backed securities	1,868,985		694		(25,563		)	1,844,116
Municipal bonds and notes	743,761		3,452		(3,000		)	744,213
Total held-to-maturity securities	$	12,663,455	$	12,923	$	(128,098	)	$	12,548,280

(1) Consists of pools of Small Business Investment Company debentures issued and guaranteed by the U.S. Small Business Administration, an independent agency of the United States.

The following tables summarize our unrealized losses on our held-to-maturity securities portfolio into categories of less than 12 months and 12 months or longer as of September 30, 2018 and December 31, 2017:

	September 30, 2018
	Less than 12 months					12 months or longer					Total
(Dollars in thousands)	Fair Value of Investments		Unrealized Losses			Fair Value of Investments		Unrealized Losses			Fair Value of Investments		Unrealized Losses
Held-to-maturity securities:
U.S. agency debentures	$	549,916	$	(14,744	)	$	61,635	$	(3,738	)	$	611,551	$	(18,482	)
Residential mortgage-backed securities:
Agency-issued mortgage-backed securities	5,514,402		(155,580		)	2,541,848		(121,168		)	8,056,250		(276,748		)
Agency-issued collateralized mortgage obligations—fixed rate	77,011		(2,285		)	2,153,494		(96,274		)	2,230,505		(98,559		)
Agency-issued collateralized mortgage obligations—variable rate	3,504		(1		)	8,445		(31		)	11,949		(32		)
Agency-issued commercial mortgage-backed securities	1,595,146		(30,149		)	1,122,118		(48,539		)	2,717,264		(78,688		)
Municipal bonds and notes	1,429,117		(51,806		)	83,486		(4,088		)	1,512,603		(55,894		)
Total temporarily impaired securities (1)	$	9,169,096	$	(254,565	)	$	5,971,026	$	(273,838	)	$	15,140,122	$	(528,403	)

(1) As of September 30, 2018, we identified a total of 1,433 investments that were in unrealized loss positions, of which 454 investments totaling $6.0 billion with unrealized losses of $273.8 million have been in an impaired position for a period of time greater than 12 months. As of September 30, 2018, we do not intend to sell any of our impaired securities prior to recovery of our adjusted cost basis, and it is more likely than not that we will not be required to sell any of our securities prior to recovery of our adjusted cost basis, which is consistent with our classification of these securities. Based on our analysis as of September 30, 2018, we deem all impairments to be temporary. Market valuations and impairment analyses on assets in the held-to-maturity securities portfolio are reviewed and monitored on a quarterly basis.

	December 31, 2017
	Less than 12 months					12 months or longer					Total
(Dollars in thousands)	Fair Value of Investments		Unrealized Losses			Fair Value of Investments		Unrealized Losses			Fair Value of Investments		Unrealized Losses
Held-to-maturity securities:
U.S. agency debentures	$	104,688	$	(1,601	)	$	—	$	—		$	104,688	$	(1,601	)
Residential mortgage-backed securities:
Agency-issued mortgage-backed securities	4,270,377		(34,092		)	408,913		(9,436		)	4,679,290		(43,528		)
Agency-issued collateralized mortgage obligations—fixed rate	1,011,709		(13,631		)	1,741,614		(40,741		)	2,753,323		(54,372		)
Agency-issued collateralized mortgage obligations—variable rate	—		—			9,812		(34		)	9,812		(34		)
Agency-issued commercial mortgage-backed securities	979,361		(11,566		)	773,712		(13,997		)	1,753,073		(25,563		)
Municipal bonds and notes	344,796		(2,103		)	32,844		(897		)	377,640		(3,000		)
Total temporarily impaired securities (1)	$	6,710,931	$	(62,993	)	$	2,966,895	$	(65,105	)	$	9,677,826	$	(128,098	)

(1) As of December 31, 2017, we identified a total of 753 investments that were in unrealized loss positions, of which 237 investments totaling $3.0 billion with unrealized losses of $65.1 million have been in an impaired position for a period of time greater than 12 months.

The following table summarizes the remaining contractual principal maturities on fixed income investment securities classified as held-to-maturity as of September 30, 2018. For U.S. agency debentures, the expected maturity is the actual contractual maturity of the notes. Expected maturities for mortgage-backed securities may differ significantly from their contractual maturities because mortgage borrowers have the right to prepay outstanding loan obligations with or without penalties. Mortgage-backed securities classified as held-to-maturity typically have original contractual maturities from 10 to 30 years whereas expected average lives of these securities tend to be significantly shorter and vary based upon structure and prepayments in lower interest rate environments.

	September 30, 2018
	Total				One Year or Less				After One Year to Five Years				After Five Years to Ten Years				After Ten Years
(Dollars in thousands)	Amortized Cost		Fair Value		Amortized Cost		Fair Value		Amortized Cost		Fair Value		Amortized Cost		Fair Value		Amortized Cost		Fair Value
U.S. agency debentures	$	641,134	$	622,737	$	—	$	—	$	104,550	$	102,498	$	536,584	$	520,239	$	—	$	—
Residential mortgage-backed securities:
Agency-issued mortgage-backed securities	8,333,088		8,056,342		—		—		179,847		174,664		859,233		821,883		7,294,008		7,059,795
Agency-issued collateralized mortgage obligations—fixed rate	2,329,065		2,230,506		—		—		—		—		474,668		452,428		1,854,397		1,778,078
Agency-issued collateralized mortgage obligations—variable rate	223,374		224,009		—		—		—		—		—		—		223,374		224,009
Agency-issued commercial mortgage-backed securities	2,795,952		2,717,264		—		—		—		—		—		—		2,795,952		2,717,264
Municipal bonds and notes	1,577,113		1,521,380		8,376		8,373		74,518		73,331		256,453		245,277		1,237,766		1,194,399
Total	$	15,899,726	$	15,372,238	$	8,376	$	8,373	$	358,915	$	350,493	$	2,126,938	$	2,039,827	$	13,405,497	$	12,973,545

Non-marketable and Other Equity Securities

The components of our non-marketable and other equity securities portfolio at September 30, 2018 and December 31, 2017 are as follows:

(Dollars in thousands)	September 30, 2018		December 31, 2017
Non-marketable and other equity securities:
Non-marketable securities (fair value accounting):
Consolidated venture capital and private equity fund investments (1)	$	126,467	$	128,111
Unconsolidated venture capital and private equity fund investments (2)	208,953		98,548
Other investments without a readily determinable fair value (3)	25,253		27,680
Other equity securities in public companies (fair value accounting) (4)	30,460		310
Non-marketable securities (equity method accounting) (5):
Venture capital and private equity fund investments	112,537		89,809
Debt funds	5,241		21,183
Other investments	125,632		111,198
Investments in qualified affordable housing projects, net (6)	261,706		174,214
Total non-marketable and other equity securities	$	896,249	$	651,053

(1) The following table shows the amounts of venture capital and private equity fund investments held by the following consolidated funds and our ownership percentage of each fund at September 30, 2018 and December 31, 2017 (fair value accounting):

	September 30, 2018				December 31, 2017
(Dollars in thousands)	Amount		Ownership %		Amount		Ownership %
Strategic Investors Fund, LP	$	12,733	12.6	%	$	14,673	12.6	%
Capital Preferred Return Fund, LP	56,453		20.0		54,147		20.0
Growth Partners, LP	56,280		33.0		58,372		33.0
CP I, LP	1,001		10.7		919		10.7
Total consolidated venture capital and private equity fund investments	$	126,467			$	128,111

(2) The carrying value represents investments in 220 and 235 funds (primarily venture capital funds) at September 30, 2018 and December 31, 2017, respectively, where our ownership interest is typically less than 5% of the voting interests of each such fund and in which we do not have the ability to exercise significant influence over the partnerships operating activities and financial policies. Effective January 1, 2018, we adopted ASU 2016-01, Recognition and Measurement of Financial Assets and Financial Liabilities which eliminated the concept of cost method accounting. On a prospective basis, we will carry our unconsolidated venture capital and private equity fund investments at fair value based on the fund investments' net asset values per share as obtained from the general partners of the investments. For each fund investment, we adjust the net asset value per share for differences between our measurement date and the date of the fund investment’s net asset value by using the most recently available financial information from the investee general partner, for example June 30^th, for our September 30^th consolidated financial statements, adjusted for any contributions paid, distributions received from the investment, and significant fund transactions or market events during the reporting period. We recorded a cumulative adjustment to opening retained earnings on January 1, 2018 for the difference between fair value and cost for these fund investments. The estimated fair value and carrying value of these venture capital and private equity fund investments was $209.0 million as of September 30, 2018. As of December 31, 2017, these investments were carried at cost and had a carrying value of $98.5 million.

(3) Effective January 1, 2018, we adopted ASU 2016-01, Recognition and Measurement of Financial Assets and Financial Liabilities which eliminated the concept of cost method accounting. On a prospective basis, we will report our other investments in the line item "Other investments without a readily determinable fair value". These investments include direct equity investments in private companies. The carrying value is based on the price at which the investment was acquired plus or minus changes resulting from observable price changes in orderly transactions for identical or similar investments. We consider a range of factors when adjusting the fair value of these investments, including, but not limited to, the term and nature of the investment, local market conditions, values for comparable securities, current and projected operating performance, exit strategies, financing transactions subsequent to the acquisition of the investment and a discount for certain investments that have lock-up restrictions or other features that indicate a discount to fair value is warranted. The following table shows the changes to the carrying amount of other investments without a readily determinable fair value for the nine months endedSeptember 30, 2018:

(Dollars in thousands)	Nine months ended September 30, 2018
Carrying value as of January 1, 2018	$	27,680
Upward carrying value adjustments	4,854
Downward carrying value adjustments	(1,729		)
Additions	3,870
Sales and dispositions	(9,422		)
Carrying value as of September 30, 2018	$	25,253

(4) Investments classified as other equity securities (fair value accounting) represent shares held in public companies as a result of exercising public equity warrant assets and direct equity investments in public companies held by our consolidated funds. Effective January 1, 2018 we adopted ASU 2016-01 Recognition and Measurement of Financial Assets and Financial Liabilities which requires equity securities to be measured at fair value with changes in the fair value recognized through net income. Prior to January 1, 2018 we reported equity securities in public companies that we held as a result of exercising public equity warrant assets in available-for-sale securities. On a prospective basis, these equity securities will be reported in non-marketable and other equity securities.

(5) The following table shows the carrying value and our ownership percentage of each investment at September 30, 2018 and December 31, 2017 (equity method accounting):

	September 30, 2018				December 31, 2017
(Dollars in thousands)	Amount		Ownership %		Amount		Ownership %
Venture capital and private equity fund investments:
Strategic Investors Fund II, LP	$	4,739	8.6	%	$	6,342	8.6	%
Strategic Investors Fund III, LP	18,176		5.9		18,758		5.9
Strategic Investors Fund IV, LP	29,445		5.0		25,551		5.0
Strategic Investors Fund V funds	24,245		Various		16,856		Various
CP II, LP (i)	6,865		5.1		6,700		5.1
Other venture capital and private equity fund investments	29,067		Various		15,602		Various
Total venture capital and private equity fund investments	$	112,537			$	89,809
Debt funds:
Gold Hill Capital 2008, LP (ii)	$	3,267	15.5	%	$	18,690	15.5	%
Other debt funds	1,974		Various		2,493		Various
Total debt funds	$	5,241			$	21,183
Other investments:
SPD Silicon Valley Bank Co., Ltd.	$	75,314	50.0	%	$	75,337	50.0	%
Other investments	50,318		Various		35,861		Various
Total other investments	$	125,632			$	111,198

(i) Our ownership includes direct ownership interest of 1.3 percent and indirect ownership interest of 3.8 percent through our investments in Strategic Investors Fund II, LP.

(ii) Our ownership includes direct ownership interest of 11.5 percent in the fund and an indirect interest in the fund through our investment in Gold Hill Capital 2008, LLC of 4.0 percent.

(6) The following table presents the balances of our investments in qualified affordable housing projects and related unfunded commitments included as a component of “other liabilities” on our consolidated balance sheets at September 30, 2018 and December 31, 2017:

(Dollars in thousands)	September 30, 2018		December 31, 2017
Investments in qualified affordable housing projects, net	$	261,706	$	174,214
Other liabilities	166,867		100,891

The following table presents other information relating to our investments in qualified affordable housing projects for the three and nine months endedSeptember 30, 2018 and 2017:

	Three months ended September 30,				Nine months ended September 30,
(Dollars in thousands)	2018		2017		2018		2017
Tax credits and other tax benefits recognized	$	6,283	$	4,539	$	16,912	$	13,199
Amortization expense included in provision for income    taxes (i)	4,773		3,533		14,269		10,154

(i) All investments are amortized using the proportional amortization method and amortization expense is included in the provision for income taxes.

The following table presents the net gains on non-marketable and other equity securities for the three and nine months endedSeptember 30, 2018 and 2017 as recorded in the line item “Gains on investment securities, net," a component of noninterest income:

	Three months ended September 30,					Nine months ended September 30,
(Dollars in thousands)	2018		2017			2018			2017
Net gains on non-marketable and other equity securities:
Non-marketable securities (fair value accounting):
Consolidated venture capital and private equity fund investments	$	2,928	$	4,473		$	18,971		$	20,649
Unconsolidated venture capital and private equity fund investments (1)	6,240		4,697			37,095			13,928
Other investments without a readily determinable fair value (1)	2,509		(49		)	4,310			3,354
Other equity securities in public companies (fair value accounting) (1)	4,407		387			(17,786		)	280
Non-marketable securities (equity method accounting):
Venture capital and private equity fund investments	11,341		4,319			30,122			10,710
Debt funds	1,473		2,445			(100		)	2,696
Other investments	3,295		(933		)	4,753			(3,163		)
Total net gains on non-marketable and other equity securities	$	32,193	$	15,339		$	77,365		$	48,454
Less: Net gains (losses) on non-marketable and other equity securities sold	357		(49		)	(20,806		)	3,355
Unrealized net gains on non-marketable and other equity securities still held	$	31,836	$	15,388		$	98,171		$	45,099

(1) Prior period amounts are not determined in a manner consistent with the current period presentation due to the adoption of accounting standard update (ASU 2016-01, Recognition and Measurement of Financial Assets and Financial Liabilities (Topic 825)).

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Loans, Allowance for Loan Losses and Allowance for Unfunded Credit Commitments

9 Months Ended

Sep. 30, 2018

Receivables [Abstract]

Loans, Allowance for Loan Losses and Allowance for Unfunded Credit Commitments

Loans, Allowance for Loan Losses and Allowance for Unfunded Credit Commitments

We serve a variety of commercial clients in the technology, life science/healthcare, private equity/venture capital and premium wine industries. Our technology clients generally tend to be in the industries of hardware (semiconductors, communications, data, storage, and electronics), software/internet (such as infrastructure software, applications, software services, digital content and advertising technology), and energy and resource innovation (“ERI”). Because of the diverse nature of ERI products and services, for our loan-related reporting purposes, ERI-related loans are reported under our hardware, software/internet, life science/healthcare and other commercial loan categories, as applicable. Our life science/healthcare clients primarily tend to be in the industries of biotechnology, medical devices, healthcare information technology and healthcare services. Loans made to private equity/venture capital firm clients typically enable them to fund investments prior to their receipt of funds from capital calls. Loans to the premium wine industry focus on vineyards and wineries that produce grapes and wines of high quality.

In addition to commercial loans, we make consumer loans through SVB Private Bank and provide real estate secured loans to eligible employees through our EHOP. Our private banking clients are primarily private equity/venture capital professionals and executive leaders in the innovation companies they support. These products and services include real estate secured home equity lines of credit, which may be used to finance real estate investments and loans used to purchase, renovate or refinance personal residences. These products and services also include restricted stock purchase loans and capital call lines of credit.

We also provide community development loans made as part of our responsibilities under the Community Reinvestment Act. These loans are included within “Construction loans” below and are primarily secured by real estate.

The composition of loans, net of unearned income of $174 million and $148 million at September 30, 2018 and December 31, 2017, respectively, is presented in the following table:

(Dollars in thousands)	September 30, 2018		December 31, 2017
Commercial loans:
Software/internet	$	6,258,724	$	6,172,531
Hardware	1,306,709		1,193,599
Private equity/venture capital	13,360,511		9,952,377
Life science/healthcare	2,302,453		1,808,827
Premium wine	227,498		204,105
Other	256,413		365,724
Total commercial loans	23,712,308		19,697,163
Real estate secured loans:
Premium wine (1)	685,941		669,053
Consumer loans (2)	2,556,906		2,300,506
Other	40,879		42,068
Total real estate secured loans	3,283,726		3,011,627
Construction loans	81,163		68,546
Consumer loans	417,718		328,980
Total loans, net of unearned income (3)	$	27,494,915	$	23,106,316

(1) Included in our premium wine portfolio are gross construction loans of $92 million and $100 million at September 30, 2018 and December 31, 2017, respectively.

(2) Consumer loans secured by real estate at September 30, 2018 and December 31, 2017 were comprised of the following:

(Dollars in thousands)	September 30, 2018		December 31, 2017
Loans for personal residence	$	2,196,948	$	1,995,840
Loans to eligible employees	285,186		243,118
Home equity lines of credit	74,772		61,548
Consumer loans secured by real estate	$	2,556,906	$	2,300,506

(3) Included within our total loan portfolio are credit card loans of $342 million and $270 million at September 30, 2018 and December 31, 2017, respectively.

Credit Quality

The composition of loans, net of unearned income of $174 million and $148 million at September 30, 2018 and December 31, 2017, respectively, broken out by portfolio segment and class of financing receivable, is as follows:

(Dollars in thousands)	September 30, 2018		December 31, 2017
Commercial loans:
Software/internet	$	6,258,724	$	6,172,531
Hardware	1,306,709		1,193,599
Private equity/venture capital	13,360,511		9,952,377
Life science/healthcare	2,302,453		1,808,827
Premium wine	913,439		873,158
Other	378,455		476,338
Total commercial loans	24,520,291		20,476,830
Consumer loans:
Real estate secured loans	2,556,906		2,300,506
Other consumer loans	417,718		328,980
Total consumer loans	2,974,624		2,629,486
Total loans, net of unearned income	$	27,494,915	$	23,106,316

The following table summarizes the aging of our gross loans, broken out by portfolio segment and class of financing receivable as of September 30, 2018 and December 31, 2017:

(Dollars in thousands)	30 - 59   Days Past   Due		60 - 89   Days Past   Due		Equal to or Greater Than 90   Days Past   Due		Total Past   Due		Current		Loans Past Due   90 Days or More Still Accruing Interest
September 30, 2018:
Commercial loans:
Software/internet	$	17,067	$	4,842	$	116	$	22,025	$	6,175,651	$	116
Hardware	491		99		—		590		1,298,215		—
Private equity/venture capital	7,556		—		2		7,558		13,357,777		2
Life science/healthcare	9,620		897		45		10,562		2,330,483		45
Premium wine	1,594		—		—		1,594		910,356		—
Other	340		27		—		367		400,547		—
Total commercial loans	36,668		5,865		163		42,696		24,473,029		163
Consumer loans:
Real estate secured loans	8,389		—		—		8,389		2,540,950		—
Other consumer loans	2,111		—		—		2,111		415,582		—
Total consumer loans	10,500		—		—		10,500		2,956,532		—
Total gross loans excluding impaired loans	47,168		5,865		163		53,196		27,429,561		163
Impaired loans	2,345		970		29,197		32,512		153,560		—
Total gross loans	$	49,513	$	6,835	$	29,360	$	85,708	$	27,583,121	$	163
December 31, 2017:
Commercial loans:
Software/internet	$	14,257	$	6,526	$	141	$	20,924	$	6,101,147	$	141
Hardware	1,145		77		50		1,272		1,163,278		50
Private equity/venture capital	86,566		38,580		—		125,146		9,835,317		—
Life science/healthcare	4,390		191		—		4,581		1,841,692		—
Premium wine	418		—		—		418		871,074		—
Other	445		—		—		445		490,292		—
Total commercial loans	107,221		45,374		191		152,786		20,302,800		191
Consumer loans:
Real estate secured loans	2,164		532		—		2,696		2,292,980		—
Other consumer loans	796		—		—		796		327,234		—
Total consumer loans	2,960		532		—		3,492		2,620,214		—
Total gross loans excluding impaired loans	110,181		45,906		191		156,278		22,923,014		191
Impaired loans	1,344		11,902		30,403		43,649		131,212		—
Total gross loans	$	111,525	$	57,808	$	30,594	$	199,927	$	23,054,226	$	191

The following table summarizes our impaired loans as they relate to our allowance for loan losses, broken out by portfolio segment and class of financing receivable as of September 30, 2018 and December 31, 2017:

(Dollars in thousands)	Impaired loans for   which there is a related allowance for loan losses		Impaired loans for   which there is no related allowance for loan losses		Total carrying value of impaired loans		Total unpaid principal of impaired loans
September 30, 2018:
Commercial loans:
Software/internet	$	64,197	$	55,442	$	119,639	$	145,122
Hardware	2,431		17,249		19,680		31,804
Private equity/venture capital	—		3,700		3,700		3,700
Life science/healthcare	22,300		14,125		36,425		44,065
Premium wine	306		2,010		2,316		2,375
Other	—		—		—		—
Total commercial loans	89,234		92,526		181,760		227,066
Consumer loans:
Real estate secured loans	3,990		322		4,312		5,996
Other consumer loans	—		—		—		—
Total consumer loans	3,990		322		4,312		5,996
Total	$	93,224	$	92,848	$	186,072	$	233,062
December 31, 2017:
Commercial loans:
Software/internet	$	49,645	$	61,009	$	110,654	$	129,006
Hardware	15,637		20,713		36,350		41,721
Private equity/venture capital	658		—		658		984
Life science/healthcare	20,521		1,166		21,687		26,360
Premium wine	—		2,877		2,877		2,911
Other	32		—		32		165
Total commercial loans	86,493		85,765		172,258		201,147
Consumer loans:
Real estate secured loans	1,331		850		2,181		3,712
Other consumer loans	422		—		422		436
Total consumer loans	1,753		850		2,603		4,148
Total	$	88,246	$	86,615	$	174,861	$	205,295

The following tables summarize our average impaired loans and interest income recognized on impaired loans, broken out by portfolio segment and class of financing receivable for the three and nine months endedSeptember 30, 2018 and 2017:

Three months ended September 30,	Average impaired loans				Interest income recognized on impaired loans
(Dollars in thousands)	2018		2017		2018		2017
Commercial loans:
Software/internet	$	118,840	$	121,290	$	607	$	767
Hardware	27,922		35,932		410		419
Private equity/venture capital	1,233		644		—		3
Life science/healthcare	38,545		25,796		365		21
Premium wine	2,384		3,625		35		39
Other	—		348		—		—
Total commercial loans	188,924		187,635		1,417		1,249
Consumer loans:
Real estate secured loans	4,330		1,306		4		24
Other consumer loans	—		1,966		—		—
Total consumer loans	4,330		3,272		4		24
Total average impaired loans	$	193,254	$	190,907	$	1,421	$	1,273

Nine months ended September 30,	Average impaired loans				Interest income recognized on impaired loans
(Dollars in thousands)	2018		2017		2018		2017
Commercial loans:
Software/internet	$	112,576	$	122,527	$	991	$	1,646
Hardware	34,469		33,271		499		518
Private equity/venture capital	536		443		—		8
Life science/healthcare	27,671		33,590		376		60
Premium wine	2,586		3,353		103		115
Other	130		706		—		—
Total commercial loans	177,968		193,890		1,969		2,347
Consumer loans:
Real estate secured loans	3,953		1,385		12		24
Other consumer loans	477		1,931		—		—
Total consumer loans	4,430		3,316		12		24
Total average impaired loans	$	182,398	$	197,206	$	1,981	$	2,371

The following tables summarize the activity relating to our allowance for loan losses for the three and nine months endedSeptember 30, 2018 and 2017, broken out by portfolio segment:

Three months ended September 30, 2018	Beginning Balance June 30, 2018		Charge-offs			Recoveries		Provision for (Reduction of) Loan Losses			Foreign Currency Translation Adjustments			Ending Balance September 30, 2018
(Dollars in thousands)
Commercial loans:
Software/internet	$	102,648	$	(6,304	)	$	841	$	16,640		$	(335	)	$	113,490
Hardware	34,695		(12,697		)	227		(1,763		)	36			20,498
Private equity/venture capital	89,409		—			3		1,632			(33		)	91,011
Life science/healthcare	35,064		(2,076		)	189		2,322			(47		)	35,452
Premium wine	3,438		—			—		125			(3		)	3,560
Other	2,896		(1,128		)	771		118			(2		)	2,655
Total commercial loans	268,150		(22,205		)	2,031		19,074			(384		)	266,666
Total consumer loans	18,559		—			133		362			(7		)	19,047
Total allowance for loan losses	$	286,709	$	(22,205	)	$	2,164	$	19,436		$	(391	)	$	285,713

Three months ended September 30, 2017	Beginning Balance June 30, 2017		Charge-offs			Recoveries		Provision for (Reduction of) Loan Losses			Foreign Currency Translation Adjustments			Ending Balance September 30, 2017
(Dollars in thousands)
Commercial loans:
Software/internet	$	92,937	$	(8,791	)	$	426	$	7,241		$	199		$	92,012
Hardware	27,800		(2,453		)	115		5,681			156			31,299
Private equity/venture capital	66,785		—			—		10,142			279			77,206
Life science/healthcare	27,730		(1,083		)	63		(1,621		)	(45		)	25,044
Premium wine	3,133		—			—		362			10			3,505
Other	4,135		—			947		(931		)	(26		)	4,125
Total commercial loans	222,520		(12,327		)	1,551		20,874			573			233,191
Total consumer loans	13,976		(11		)	277		1,535			42			15,819
Total allowance for loan losses	$	236,496	$	(12,338	)	$	1,828	$	22,409		$	615		$	249,010

Nine months ended September 30, 2018	Beginning Balance December 31, 2017		Charge-offs			Recoveries		Provision for (Reduction of) Loan Losses			Foreign Currency Translation Adjustments			Ending Balance September 30, 2018
(Dollars in thousands)
Commercial loans:
Software/internet	$	96,104	$	(26,377	)	$	1,818	$	42,620		$	(675	)	$	113,490
Hardware	27,614		(16,111		)	1,458		7,788			(251		)	20,498
Private equity/venture capital	82,468		(112		)	13		8,200			442			91,011
Life science/healthcare	24,924		(2,940		)	245		13,829			(606		)	35,452
Premium wine	3,532		—			—		42			(14		)	3,560
Other	3,941		(2,391		)	1,874		(775		)	6			2,655
Total commercial loans	238,583		(47,931		)	5,408		71,704			(1,098		)	266,666
Total consumer loans	16,441		(289		)	470		2,384			41			19,047
Total allowance for loan losses	$	255,024	$	(48,220	)	$	5,878	$	74,088		$	(1,057	)	$	285,713

Nine months ended September 30, 2017	Beginning Balance December 31, 2016		Charge-offs			Recoveries		Provision for (Reduction of) Loan Losses			Foreign Currency Translation Adjustments			Ending Balance September 30, 2017
(Dollars in thousands)
Commercial loans:
Software/internet	$	97,388	$	(36,172	)	$	2,833	$	27,487		$	476		$	92,012
Hardware	31,166		(6,726		)	459		6,075			325			31,299
Private equity/venture capital	50,299		—			—		26,111			796			77,206
Life science/healthcare	25,446		(7,493		)	107		6,906			78			25,044
Premium wine	4,115		—			—		(567		)	(43		)	3,505
Other	4,768		(1,047		)	1,424		(1,005		)	(15		)	4,125
Total commercial loans	213,182		(51,438		)	4,823		65,007			1,617			233,191
Total consumer loans	12,184		(11		)	1,332		2,266			48			15,819
Total allowance for loan losses	$	225,366	$	(51,449	)	$	6,155	$	67,273		$	1,665		$	249,010

The following table summarizes the activity relating to our allowance for unfunded credit commitments for the three and nine months endedSeptember 30, 2018 and 2017:

	Three months ended September 30,					Nine months ended September 30,
(Dollars in thousands)	2018			2017		2018			2017
Allowance for unfunded credit commitments, beginning balance	$	54,104		$	47,000	$	51,770		$	45,265
(Reduction of) provision for unfunded credit commitments	(2,262		)	1,113		138			2,789
Foreign currency translation adjustments	(34		)	59		(100		)	118
Allowance for unfunded credit commitments, ending balance (1)	$	51,808		$	48,172	$	51,808		$	48,172

(1) See Note 13—“Off-Balance Sheet Arrangements, Guarantees and Other Commitments” of the “Notes to Interim Consolidated Financial Statements (unaudited)” under Part I, Item 1 of this report for additional disclosures related to our commitments to extend credit.

The following table summarizes the allowance for loan losses individually and collectively evaluated for impairment as of September 30, 2018 and December 31, 2017, broken out by portfolio segment:

	September 30, 2018								December 31, 2017
	Individually Evaluated for   Impairment				Collectively Evaluated for   Impairment				Individually Evaluated for   Impairment				Collectively Evaluated for   Impairment
(Dollars in thousands)	Allowance for loan losses		Recorded investment in loans		Allowance for loan losses		Recorded investment in loans		Allowance for loan losses		Recorded investment in loans		Allowance for loan losses		Recorded investment in loans
Commercial loans:
Software/internet	$	36,856	$	119,639	$	76,634	$	6,139,085	$	23,088	$	110,654	$	73,016	$	6,061,877
Hardware	764		19,680		19,734		1,287,029		8,450		36,350		19,164		1,157,249
Private equity/venture capital	—		3,700		91,011		13,356,811		330		658		82,138		9,951,719
Life science/healthcare	11,951		36,425		23,501		2,266,028		9,315		21,687		15,609		1,787,140
Premium wine	3		2,316		3,557		911,123		—		2,877		3,532		870,281
Other	—		—		2,655		378,455		32		32		3,909		476,306
Total commercial loans	49,574		181,760		217,092		24,338,531		41,215		172,258		197,368		20,304,572
Total consumer loans	418		4,312		18,629		2,970,312		578		2,603		15,863		2,626,883
Total	$	49,992	$	186,072	$	235,721	$	27,308,843	$	41,793	$	174,861	$	213,231	$	22,931,455

Credit Quality Indicators

For each individual client, we establish an internal credit risk rating for that loan, which is used for assessing and monitoring credit risk as well as performance of the loan and the overall portfolio. Our internal credit risk ratings are also used to summarize the risk of loss due to failure by an individual borrower to repay the loan. For our internal credit risk ratings, each individual loan is given a risk rating of 1 through 10. Loans risk-rated 1 through 4 are performing loans and translate to an internal rating of “Pass," with loans risk-rated 1 being cash secured. Loans risk-rated 5 through 7 are performing loans; however, we consider them as demonstrating higher risk, which requires more frequent review of the individual exposures; these translate to an internal rating of “Performing (Criticized)." When full repayment of a criticized loan has been deemed improbable under the original contractual terms but full repayment remains probable overall, the loan is considered to be a “Performing Impaired (Criticized)” loan. All of our nonaccrual loans are risk-rated 8 or 9 and are classified under the nonperforming impaired category. (For further description of nonaccrual loans, refer to Note 2—“Summary of Significant Accounting Policies” under Part II, Item 8 of our 2017 Form 10-K). Loans rated 10 are charged-off and are not included as part of our loan portfolio balance. We review our credit quality indicators for performance and appropriateness of risk ratings as part of our evaluation process for our allowance for loan losses.

The following table summarizes the credit quality indicators, broken out by portfolio segment and class of financing receivables as of September 30, 2018 and December 31, 2017:

(Dollars in thousands)	Pass		Performing (Criticized)		Performing Impaired (Criticized)		Nonperforming Impaired (Nonaccrual)		Total
September 30, 2018:
Commercial loans:
Software/internet	$	5,613,023	$	584,653	$	37,204	$	82,435	$	6,317,315
Hardware	1,245,532		53,273		17,249		2,431		1,318,485
Private equity/venture capital	13,362,294		3,041		—		3,700		13,369,035
Life science/healthcare	2,172,679		168,366		14,125		22,300		2,377,470
Premium wine	862,311		49,639		2,010		306		914,266
Other	398,263		2,651		—		—		400,914
Total commercial loans	23,654,102		861,623		70,588		111,172		24,697,485
Consumer loans:
Real estate secured loans	2,529,708		19,631		322		3,990		2,553,651
Other consumer loans	417,344		349		—		—		417,693
Total consumer loans	2,947,052		19,980		322		3,990		2,971,344
Total gross loans	$	26,601,154	$	881,603	$	70,910	$	115,162	$	27,668,829
December 31, 2017:
Commercial loans:
Software/internet	$	5,655,739	$	466,332	$	31,794	$	78,860	$	6,232,725
Hardware	1,112,574		51,976		20,165		16,185		1,200,900
Private equity/venture capital	9,955,082		5,381		—		658		9,961,121
Life science/healthcare	1,720,613		125,660		1,167		20,520		1,867,960
Premium wine	834,537		36,955		2,476		401		874,369
Other	469,721		21,016		—		32		490,769
Total commercial loans	19,748,266		707,320		55,602		116,656		20,627,844
Consumer loans:
Real estate secured loans	2,282,375		13,301		—		2,181		2,297,857
Other consumer loans	326,851		1,179		—		422		328,452
Total consumer loans	2,609,226		14,480		—		2,603		2,626,309
Total gross loans	$	22,357,492	$	721,800	$	55,602	$	119,259	$	23,254,153

Troubled Debt Restructurings

As of September 30, 2018, we had 20 TDRs with a total carrying value of $85.8 million where concessions have been granted to borrowers experiencing financial difficulties, in an attempt to maximize collection. There were $0.8 millionof unfunded commitments available for funding to the clients associated with these TDRs as of September 30, 2018.

The following table summarizes our loans modified in TDRs, broken out by portfolio segment and class of financing receivables at September 30, 2018 and December 31, 2017:

(Dollars in thousands)	September 30, 2018		December 31, 2017
Loans modified in TDRs:
Commercial loans:
Software/internet	$	49,078	$	73,455
Hardware	12,499		51,132
Private equity/venture capital	—		350
Life science/healthcare	20,942		19,235
Premium wine	2,964		3,198
Total commercial loans	85,483		147,370
Consumer loans:
Other consumer loans	322		423
Total	$	85,805	$	147,793

The following table summarizes the recorded investment in loans modified in TDRs, broken out by portfolio segment and class of financing receivable, for modifications made during the three and nine months endedSeptember 30, 2018 and 2017:

	Three months ended September 30,				Nine months ended September 30,
(Dollars in thousands)	2018		2017		2018		2017
Loans modified in TDRs during the period:
Commercial loans:
Software/internet	$	—	$	10,876	$	14,069	$	26,034
Hardware	10,398		396		12,347		396
Life science/healthcare	—		—		5,909		—
Premium wine	—		—		—		185
Total commercial loans	10,398		11,272		32,325		26,615
Consumer loans:
Other consumer loans	—		—		322		—
Total loans modified in TDRs during the period (1)	$	10,398	$	11,272	$	32,647	$	26,615

(1) There were $13.0 million and $21.5 million of partial charge-offs for the three and nine months endedSeptember 30, 2018, respectively, and zero and $2.6 million of partial charge-offs during the three and nine months endedSeptember 30, 2017, respectively.

During the three and nine months endedSeptember 30, 2018, all new TDRs of $10.4 million and $32.6 million, respectively, were modified through payment deferrals granted to our clients. During the three and nine months endedSeptember 30, 2017, all new TDRs of $11.3 million and $26.6 million, respectively, were modified through payment deferrals granted to our clients.

The related allowance for loan losses for the majority of our TDRs is determined on an individual basis by comparing the carrying value of the loan to the present value of the estimated future cash flows, discounted at the pre-modification contractual interest rate. For certain TDRs, the related allowance for loan losses is determined based on the fair value of the collateral if the loan is collateral dependent.

The following table summarizes the recorded investment in loans modified in TDRs within the previous 12 months that subsequently defaulted during the three and nine months endedSeptember 30, 2018 and 2017:

	Three months ended September 30,				Nine months ended September 30,
(Dollars in thousands)	2018		2017		2018		2017
TDRs modified within the previous 12 months that defaulted during the period:
Commercial loans:
Software/internet	$	18,911	$	1,234	$	41,568	$	1,234
Hardware	2,100		—		5,549		—
Life science/healthcare	5,909		—		7,139		—
Premium wine	—		186		—		186
Total TDRs modified within the previous 12 months that defaulted in the period	$	26,920	$	1,420	$	54,256	$	1,420

Charge-offs and defaults on previously restructured loans are evaluated to determine the impact to the allowance for loan losses, if any. The evaluation of these defaults may impact the assumptions used in calculating the reserve on other TDRs and impaired loans as well as management’s overall outlook of macroeconomic factors that affect the reserve on the loan portfolio as a whole. After evaluating the charge-offs and defaults experienced on our TDRs we determined that no change to our reserving methodology for TDRs was necessary to determine the allowance for loan losses as of September 30, 2018.

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Short-Term Borrowings and Long-Term Debt

9 Months Ended

Sep. 30, 2018

Debt Disclosure [Abstract]

Short-Term Borrowings and Long-Term Debt

Short-Term Borrowings and Long-Term Debt

The following table represents outstanding short-term borrowings and long-term debt at September 30, 2018 and December 31, 2017:

				Carrying Value
(Dollars in thousands)	Maturity	Principal value at September 30, 2018		September 30, 2018		December 31, 2017
Short-term borrowings:
Short-term FHLB advances	(1)	$	2,250,000	$	2,250,000	$	700,000
Federal funds purchased		—		—		330,000
Securities sold under agreement to repurchase	(2)	371,539		371,539		—
Other short-term borrowings	(3)	9,713		9,713		3,730
Total short-term borrowings				$	2,631,252	$	1,033,730
Long-term debt:
3.50% Senior Notes	January 29, 2025	$	350,000	$	347,554	$	347,303
5.375% Senior Notes	September 15, 2020	350,000		348,663		348,189
Total long-term debt				$	696,217	$	695,492

(1) Represents advances from the FHLB at September 30, 2018 with maturity dates through November 26, 2018.

(2) Securities sold under repurchase agreements are effectively short-term collateralized borrowings. Gross repurchase agreements held at September 30, 2018 have maturity dates through October 17, 2018.

(3) Represents cash collateral received from certain counterparties in relation to market value exposures of derivative contracts in our favor.

Interest expense related to short-term borrowings and long-term debt was $12.0 million and $29.1 million for the three and nine months ended September 30,2018, respectively, and $9.0 million and $27.2 million for the three and nine months endedSeptember 30, 2017, respectively. The weighted average interest rate associated with our short-term borrowings was 2.31 percent as of September 30, 2018 and 1.39 percent as of December 31, 2017.

Available Lines of Credit

We have certain facilities in place to enable us to access short-term borrowings on a secured (using loans and fixed income investment securities as collateral) and unsecured basis. These include repurchase agreements and federal funds lines with various financial institutions. As of September 30, 2018, we did not have any borrowings outstanding against our federal funds lines. We also pledge collateral to the FHLB of San Francisco (comprised primarily of loans and fixed income investment securities) and the discount window at the FRB (comprised primarily of fixed income investment securities) of which $2.0 billion and $1.0 billion, respectively, of our borrowing capacity, was unused and available to support additional borrowings at September 30, 2018.

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Derivative Financial Instruments

9 Months Ended

Sep. 30, 2018

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Derivative Financial Instruments

Derivative Financial Instruments

We primarily use derivative financial instruments to manage interest rate risk, currency exchange rate risk and to assist customers with their risk management objectives, which may include currency exchange rate risks and interest rate risks. Also, in connection with negotiating credit facilities and certain other services, we often obtain equity warrant assets giving us the right to acquire stock in private, venture-backed companies in the technology and life science/healthcare industries.

Currency Exchange Risk

We enter into foreign exchange forward contracts to economically reduce our foreign exchange exposure risk associated with the net difference between foreign currency denominated assets and liabilities. We do not designate any foreign exchange forward contracts as derivative instruments that qualify for hedge accounting. Gains or losses from changes in currency rates on foreign currency denominated instruments are recorded in the line item “other” as part of noninterest income, a component of consolidated net income. We may experience ineffectiveness in the economic hedging relationship, because the instruments are revalued based upon changes in the currency’s spot rate on the principal value, while the forwards are revalued on a discounted cash flow basis. We record forward agreements in gain positions in other assets and loss positions in other liabilities, while net changes in fair value are recorded in the line item “other” as part of noninterest income, a component of consolidated net income.

Other Derivative Instruments

Also included in our derivative instruments are equity warrant assets and client forward and option contracts, and client interest rate contracts. For further description of these other derivative instruments, refer to Note 2-“Summary of Significant Accounting Policies" under Part II, Item 8 of our 2017 Form 10-K.

Counterparty Credit Risk

We are exposed to credit risk if counterparties to our derivative contracts do not perform as expected. We mitigate counterparty credit risk through credit approvals, limits, monitoring procedures and obtaining collateral, as appropriate. With respect to measuring counterparty credit risk for derivative instruments, we measure the fair value of a group of financial assets and financial liabilities on a net risk basis by counterparty portfolio.

The total notional or contractual amounts and fair value of our derivative financial instruments at September 30, 2018 and December 31, 2017 were as follows:

	September 30, 2018						December 31, 2017
	Notional or Contractual Amount		Fair Value				Notional or Contractual Amount		Fair Value
(Dollars in thousands)			Derivative Assets (1)		Derivative Liabilities (1)				Derivative Assets (1)		Derivative Liabilities (1)
Derivatives not designated as hedging instruments:
Currency exchange risks:
Foreign exchange forwards	$	241,360	$	2,842	$	—	$	50,889	$	414	$	—
Foreign exchange forwards	397,153		—		4,370		425,055		—		5,201
Other derivative instruments:
Equity warrant assets	223,868		146,967		—		211,253		123,763		—
Client foreign exchange forwards	2,523,524		77,585		—		2,203,643		95,035		—
Client foreign exchange forwards	2,390,294		—		70,317		2,092,207		—		90,253
Client foreign currency options	91,125		1,476		—		102,678		1,187		—
Client foreign currency options	91,149		—		1,478		102,678		—		1,187
Client interest rate derivatives (2)	937,808		6,262		—		726,984		11,753		—
Client interest rate derivatives	1,335,830		—		15,156		782,586		—		11,940
Total Derivatives not designated as hedging instruments			$	235,132	$	91,321			$	232,152	$	108,581

(1) Derivative assets and liabilities are included in "accrued interest receivable and other assets" and "other liabilities", respectively, on our consolidated balance sheets.

(2) The amount reported for September 30, 2018 reflects rule changes implemented by two central clearing houses that allow entities to elect to treat derivative assets, liabilities and the related variation margin as settlement of the related derivative fair values for legal and accounting purposes, as opposed to presenting gross derivative assets and liabilities. As a result, client interest rate derivatives at September 30, 2018, reflect reductions of approximately $8.7 million of derivative assets that previously would have been reported on a gross basis and approximately $302.4 million in related notional amounts for these derivative assets cleared through central clearing houses.

A summary of our derivative activity and the related impact on our consolidated statements of income for the three and nine months endedSeptember 30, 2018 and 2017 is as follows:

		Three months ended September 30,						Nine months ended September 30,
(Dollars in thousands)	Statement of income location	2018			2017			2018			2017
Derivatives designated as hedging instruments:
Interest rate risks:
Net cash benefit associated with interest rate swaps	Interest expense—borrowings	$	—		$	62		$	—		$	997
Changes in fair value of interest rate swaps	Other noninterest income	—			—			—			(7		)
Net gains associated with interest rate risk derivatives		$	—		$	62		$	—		$	990
Derivatives not designated as hedging instruments:
Currency exchange risks:
Gains on revaluations of internal foreign currency instruments, net	Other noninterest income	$	5,412		$	10,561		$	8,019		$	29,265
(Losses) on internal foreign exchange forward contracts, net	Other noninterest income	(5,002		)	(10,550		)	(8,055		)	(28,349		)
Net gains (losses) associated with internal currency risk		$	410		$	11		$	(36	)	$	916
Other derivative instruments:
(Losses) gains on revaluations of client foreign currency instruments, net	Other noninterest income	$	(1,187	)	$	3,760		$	3,718		$	8,889
Gains (losses) on client foreign exchange forward contracts, net	Other noninterest income	1,573			(3,871		)	(2,697		)	(8,350		)
Net gains (losses) associated with client currency risk		$	386		$	(111	)	$	1,021		$	539
Net gains on equity warrant assets	Gains on equity warrant assets, net	$	34,141		$	24,922		$	72,393		$	42,432
Net gains (losses) on other derivatives	Other noninterest income	$	222		$	(38	)	$	643		$	(524	)

Balance Sheet Offsetting

Certain of our derivative and other financial instruments are subject to enforceable master netting arrangements with our counterparties. These agreements provide for the net settlement of multiple contracts with a single counterparty through a single payment, in a single currency, in the event of default on or termination of any one contract.

The following table summarizes our assets subject to enforceable master netting arrangements as of September 30, 2018 and December 31, 2017:

	Gross Amounts of Recognized Assets		Gross Amounts offset in the Statement of Financial Position		Net Amounts of Assets Presented in the Statement of Financial Position		Gross Amounts Not Offset in the Statement of Financial Position But Subject to Master Netting Arrangements						Net Amount
(Dollars in thousands)							Financial Instruments			Cash Collateral Received (1)
September 30, 2018
Derivative Assets:
Foreign exchange forwards	$	80,427	$	—	$	80,427	$	(29,400	)	$	(6,816	)	$	44,211
Foreign currency options	1,476		—		1,476		(811		)	—			665
Client interest rate derivatives	6,262		—		6,262		(3,365		)	(2,897		)	—
Total derivative assets	88,165		—		88,165		(33,576		)	(9,713		)	44,876
Reverse repurchase, securities borrowing, and similar arrangements	119,181		—		119,181		(119,181		)	—			—
Total	$	207,346	$	—	$	207,346	$	(152,757	)	$	(9,713	)	$	44,876
December 31, 2017
Derivative Assets:
Foreign exchange forwards (2)	$	95,449	$	—	$	95,449	$	(14,570	)	$	(3,616	)	$	77,263
Foreign currency options	1,187		—		1,187		(557		)	—			630
Client interest rate derivatives (2)	11,753		—		11,753		(11,627		)	(114		)	12
Total derivative assets	108,389		—		108,389		(26,754		)	(3,730		)	77,905
Reverse repurchase, securities borrowing, and similar arrangements	247,876		—		247,876		(247,876		)	—			—
Total	$	356,265	$	—	$	356,265	$	(274,630	)	$	(3,730	)	$	77,905

(1) Cash collateral received from our counterparties in relation to market value exposures of derivative contracts in our favor is recorded as a component of “short-term borrowings” on our consolidated balance sheets.

(2) For the period ending December 31, 2017, previously reported amounts for our foreign exchange forwards and client interest rate derivatives were reclassified between "Financial Instruments" and "Cash Collateral Received" to properly reflect cash collateral received for these derivative assets subject to master netting arrangements, respectively. The correction of this immaterial error had no impact on the "Net Amount" of derivative assets subject to enforceable master netting arrangements.

The following table summarizes our liabilities subject to enforceable master netting arrangements as of September 30, 2018 and December 31, 2017:

	Gross Amounts of Recognized Liabilities		Gross Amounts offset in the Statement of Financial Position		Net Amounts of Liabilities Presented in the Statement of Financial Position		Gross Amounts Not Offset in the Statement of Financial Position But Subject to Master Netting Arrangements						Net Amount
(Dollars in thousands)							Financial Instruments			Cash Collateral Pledged (1)
September 30, 2018
Derivative Liabilities:
Foreign exchange forwards	$	74,687	$	—	$	74,687	$	(22,038	)	$	(20,036	)	$	32,613
Foreign currency options	1,478		—		1,478		(666		)	—			812
Client interest rate derivatives	15,156		—		15,156		(4,882		)	(10,180		)	94
Total derivative liabilities	91,321		—		91,321		(27,586		)	(30,216		)	33,519
Repurchase, securities lending, and similar arrangements	371,539		—		371,539		(147,757		)	(750		)	223,032
Total	$	462,860	$	—	$	462,860	$	(175,343	)	$	(30,966	)	$	256,551
December 31, 2017
Derivative Liabilities:
Foreign exchange forwards (2)	$	95,454	$	—	$	95,454	$	(10,997	)	$	(69,110	)	$	15,347
Foreign currency options (2)	1,187		—		1,187		(501		)	(130		)	556
Client interest rate derivatives (2)	11,940		—		11,940		—			(11,924		)	16
Total derivative liabilities (2)	108,581		—		108,581		(11,498		)	(81,164		)	15,919
Repurchase, securities lending, and similar arrangements	—		—		—		—			—			—
Total (2)	$	108,581	$	—	$	108,581	$	(11,498	)	$	(81,164	)	$	15,919

(1) Cash collateral pledged to our counterparties in relation to market value exposures of derivative contracts in a liability position and repurchase agreements are recorded as a component of “cash and cash equivalents" on our consolidated balance sheets.

(2) For the period ending December 31, 2017, previously reported amounts included in "Financial Instruments" were reclassified to "Cash Collateral Pledged" to properly reflect cash collateral pledged for these derivative liabilities subject to master netting arrangements. The correction of this immaterial error had no impact on the "Net Amount" of derivative liabilities subject to enforceable master netting arrangements.

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Noninterest Income

9 Months Ended

Sep. 30, 2018

Other Income and Expenses [Abstract]

Noninterest Income

Noninterest Income

On January 1, 2018, we adopted Topic 606 using the modified retrospective method applied to those contracts which were not completed as of January 1, 2018. Results for reporting periods beginning after January 1, 2018, are presented under Topic 606, while prior period amounts are not adjusted and continue to be reported in accordance with our previous accounting methodology under Topic 605. A summary of noninterest income for the three and nine months endedSeptember 30, 2018 and 2017 is as follows:

	Three months ended September 30,				Nine months ended September 30,
(Dollars in thousands)	2018		2017		2018		2017
Noninterest income:
Gains on investment securities, net	$	32,193	$	15,238	$	77,365	$	48,838
Gains on equity warrant assets, net	34,141		24,922		72,393		42,432
Foreign exchange fees	32,656		29,671		100,560		82,026
Credit card fees	24,121		20,270		68,739		56,099
Deposit service charges	19,588		14,508		56,081		43,046
Client investment fees	36,265		15,563		88,592		37,571
Lending related fees	10,675		15,404		30,938		32,874
Letters of credit and standby letters of credit fees	8,409		7,306		24,938		20,951
Other	12,022		15,896		38,671		41,128
Total noninterest income	$	210,070	$	158,778	$	558,277	$	404,965

Gains on investment securities, net

Net gains on investment securities include both gains and losses from our non-marketable and other equity securities, which include public equity securities held as a result of exercised equity warrant assets, gains and losses from sales of our AFS debt securities portfolio, when applicable, and carried interest.

Our non-marketable and other equity securities portfolio primarily represents investments in venture capital and private equity funds, our China Joint Venture, debt funds, private and public portfolio companies and investments in qualified affordable housing projects. We experience variability in the performance of our non-marketable and other equity securities from period to period, which results in net gains or losses on investment securities (both realized and unrealized). This variability is due to a number of factors, including unrealized changes in the values of our investments, changes in the amount of realized gains from distributions, changes in liquidity events and general economic and market conditions. Unrealized gains from non-marketable and other equity securities for any single period are typically driven by valuation changes, and are therefore subject to potential increases or decreases in future periods. Such variability may lead to volatility in the gains or losses from investment securities. As such, our results for a particular period are not necessarily indicative of our expected performance in a future period.

The extent to which any unrealized gains or losses will become realized is subject to a variety of factors, including, among other things, the expiration of certain sales restrictions to which these equity securities may be subject to (i.e., lock-up agreements), changes in prevailing market prices, market conditions, the actual sales or distributions of securities, and the timing of such actual sales or distributions, which, to the extent such securities are managed by our managed funds, are subject to our funds' separate discretionary sales/distributions and governance processes.

Carried interest is comprised of preferential allocations of profits recognizable when the return on assets of our individual managed fund of funds and direct venture funds exceeds certain performance targets and is payable to us, as the general partners of the managed funds. The carried interest we earn is often shared with employees, who are also members of the general partner entities. We record carried interest on a quarterly basis by measuring fund performance to date versus the performance target.  For our unconsolidated managed funds, carried interest is recorded as gains on investment securities, net. For our consolidated managed funds, it is recorded as a component of net income attributable to noncontrolling interests.  Carried interest allocated to others is recorded as a component of net income attributable to noncontrolling interests. Any carried interest paid to us (or our employees) may be subject to reversal to the extent fund performance declines to a level where inception to date carried interest is lower than actual payments made by the funds. The limited partnership agreements for our funds provide that carried interest is generally not paid to the general partners until the funds have provided a full return of contributed capital to the limited partners. Accrued, but unpaid carried interest may be subject to reversal to the extent that the fund performance declines to a level where inception-to-date carried interest is less than prior amounts recognized. Carried interest income is accounted for under an ownership model based on ASC 323 — Equity Method of Accounting and ASC 810 — Consolidation.

Our available-for-sale securities portfolio is a fixed income investment portfolio that is managed with the objective of earning an appropriate portfolio yield over the long-term while maintaining sufficient liquidity and credit diversification as well as addressing our asset/liability management objectives. Though infrequent, sales of debt securities in our AFS securities portfolio may result in net gains or losses and are conducted pursuant to the guidelines of our investment policy related to the management of our liquidity position and interest rate risk.

Gains on investment securities are outside of the scope of the new revenue standard as it explicitly excludes noninterest income earned from our investment-related activities. A summary of gains and losses on investment securities for the three and nine months endedSeptember 30, 2018 and 2017 is as follows:

	Three months ended September 30,					Nine months ended September 30,
(Dollars in thousands)	2018		2017			2018		2017
Gains on non-marketable and other equity securities, net	$	32,193	$	15,339		$	77,365	$	48,454
(Losses) gains on sales of available-for-sale securities, net	—		(101		)	—		384
Total gains on investment securities, net	$	32,193	$	15,238		$	77,365	$	48,838

Gains on equity warrant assets, net

In connection with negotiating credit facilities and certain other services, we often obtain rights to acquire stock in the form of equity warrant assets in primarily private, venture-backed companies in the technology and life science/healthcare industries. Any changes in fair value from the grant date fair value of equity warrant assets will be recognized as increases or decreases to other assets on our balance sheet and as net gains or losses on equity warrant assets, in noninterest income, a component of consolidated net income. Gains on equity warrant assets are recognized outside of the scope of the new revenue standard as it explicitly excludes noninterest income earned from our derivative-related activities. A summary of net gains on equity warrant assets for the three and nine months endedSeptember 30, 2018 and 2017 is as follows:

	Three months ended September 30,						Nine months ended September 30,
(Dollars in thousands)	2018			2017			2018			2017
Equity warrant assets:
Gains on exercises, net	$	18,287		$	7,449		$	42,808		$	22,482
Cancellations and expirations	(1,432		)	(757		)	(3,158		)	(3,614		)
Changes in fair value, net	17,286			18,230			32,743			23,564
Total net gains on equity warrant assets	$	34,141		$	24,922		$	72,393		$	42,432

Foreign exchange fees

Foreign exchange fees represent the income differential between purchases and sales of foreign currency on behalf of our clients, primarily from spot contracts. Foreign exchange spot contract fees are recognized upon the completion of the single performance obligation, the execution of a spot trade in exchange for a fee. In line with customary business practice, the legal right transfers to the client upon execution of a foreign exchange contract on the trade date, and as such, we currently recognize our fees based on the trade date and are typically settled within two business days.

Forward contract and option premium fees are recognized outside of the scope of the new revenue standard as it explicitly excludes noninterest income earned from our derivative-related activities. A summary of foreign exchange fee income by instrument type for the three and nine months endedSeptember 30, 2018 and 2017 is as follows:

	Three months ended September 30,				Nine months ended September 30,
(Dollars in thousands)	2018		2017		2018		2017
Foreign exchange fees by instrument type:
Spot contract commissions	$	30,041	$	27,700	$	92,791	$	73,707
Forward contract commissions	2,534		1,877		7,474		7,948
Option premium fees	81		94		295		371
Total foreign exchange fees	$	32,656	$	29,671	$	100,560	$	82,026

Credit card fees

Credit card fees include interchange income from credit and debit cards and fees earned from processing transactions for merchants. Interchange income is earned after satisfying our performance obligation of providing nightly settlement services to a payment network. Costs related to rewards programs are recorded when the rewards are earned by the customer and presented as a reduction to interchange fee income. Rewards programs continue to be accounted for under ASC 310 - Receivables. Our performance obligations for merchant service fees are to transmit data and funds between the merchant and the payment network. Credit card interchange and merchant service fees are earned daily upon completion of transaction settlement services.

Annual card service fees are recognized on a straight-line basis over a 12-month period and continue to be accounted for under ASC 310 - Receivables.

A summary of credit card fees by instrument type for the three and nine months endedSeptember 30, 2018 and 2017 is as follows:

	Three months ended September 30,				Nine months ended September 30,
(Dollars in thousands)	2018		2017		2018		2017
Credit card fees by instrument type:
Card interchange fees, net	$	18,849	$	16,179	$	54,547	$	44,182
Merchant service fees	3,679		2,930		10,010		8,553
Card service fees	1,593		1,161		4,182		3,364
Total credit card fees	$	24,121	$	20,270	$	68,739	$	56,099

Deposit service charges

Deposit service charges include fees earned from performing cash management activities and other deposit account services. Deposit services include, but are not limited to, the following: receivables services, which include merchant services, remote capture, lockbox, electronic deposit capture, and fraud control services. Payment and cash management products and services include wire transfer and automated clearing house payment services to enable clients to transfer funds more quickly, as well as business bill pay, business credit and debit cards, account analysis, and disbursement services. Deposit service charges are recognized over the period in which the related performance obligation is provided, generally on a monthly basis.

Client investment fees

Client investment fees include fees earned from discretionary investment management services for substantially all clients, managing clients’ portfolios based on their investment policies, strategies and objectives and investment advisory fees. Revenue is recognized on a monthly basis upon completion of our performance obligation and consideration is typically received in the subsequent month. Included in our sweep money market fees are Rule 12(b)-1 fees, revenue sharing and customer transactional-based fees. Rule 12(b)-1 fees and revenue sharing are recognized as earned based on client funds that are invested in the period, typically monthly. Transactional based fees are earned and recognized on fixed income securities when the transaction is executed on the clients' behalf. Amounts paid to third-party service providers are predominantly expensed, such that client investment fees are recorded gross of payments made to third parties. A summary of client investment fees by instrument type for the three and nine months endedSeptember 30, 2018 and 2017, is as follows:

	Three months ended September 30,				Nine months ended September 30,
(Dollars in thousands)	2018		2017		2018		2017
Client investment fees by type:
Sweep money market fees	$	21,105	$	7,968	$	50,605	$	18,838
Asset management fees (1)	6,358		4,177		17,447		11,666
Repurchase agreement fees	8,802		3,418		20,540		7,067
Total client investment fees (2)	$	36,265	$	15,563	$	88,592	$	37,571

(1) Represents fees earned from investments in third-party money market mutual funds and fixed-income securities managed by SVB Asset Management.

(2) Represents fees earned on client investment funds which are maintained at third-party financial institutions and are not recorded on our balance sheet.

Lending related fees

Unused commitment fees, minimum finance fees and unused line fees are recognized as earned on a monthly basis. Fees that qualify for syndication treatment are recognized at the completion of the syndicated loan deal for which the fees were received. Lending related fees are recognized outside of the scope of the new revenue standard as it explicitly excludes noninterest income earned from our lending-related activities. A summary of lending related fees by instrument type for the three and nine months endedSeptember 30, 2018 and 2017 is as follows:

	Three months ended September 30,				Nine months ended September 30,
(Dollars in thousands)	2018		2017		2018		2017
Lending related fees by instrument type:
Unused commitment fees	$	8,410	$	12,334	$	24,994	$	25,923
Other	2,265		3,070		5,944		6,951
Total lending related fees	$	10,675	$	15,404	$	30,938	$	32,874

Letters of credit and standby letters of credit fees

Commercial and standby letters of credit represent conditional commitments issued by us on behalf of a client to guarantee the performance of the client to a third party when certain specified future events have occurred. Fees generated from letters of credit and standby letters of credit are deferred as a component of other liabilities and recognized in noninterest income over the commitment period using the straight-line method, based on the likelihood that the commitment being drawn down will be remote. Letters of credit and standby letters of credit fees are recognized outside of the scope of the new revenue standard as it explicitly excludes noninterest income earned from our lending related activities.

Other

Other noninterest income primarily includes income from fund management fees and service revenue. Fund management fees are comprised of fees charged directly to our managed funds of funds and direct venture funds. Fund management fees are based upon the contractual terms of the limited partnership agreements and are generally recognized as earned over the specified contract period, which is generally equal to the life of the individual fund. Fund management fees are calculated as a percentage of committed capital and collected in advance and are received quarterly. Fund management fees for certain of our limited partnership agreements are calculated as a percentage of distributions made by the funds and revenue is recorded only at the time of a distribution event. As distribution events are not predetermined for these certain funds, management fees are considered variable and constrained under the new revenue standard.

Other service revenue primarily consists of dividend income on FHLB/FRB stock, correspondent bank rebate income, incentive fees related to carried interest and other fee income. We recognize revenue when our performance obligations are met and record revenues on a daily/monthly basis, quarterly, semi-annually or annual basis. For event driven revenue sources, we recognize revenue when: (i) persuasive evidence of an arrangement exists, (ii) we have performed the service, provided we have no other remaining obligations to the customer, (iii) the fee is fixed or determinable and (iv) collectability is probable.

A summary of other noninterest income by instrument type for the three and nine months endedSeptember 30, 2018 and 2017 is as follows:

	Three months ended September 30,					Nine months ended September 30,
(Dollars in thousands)	2018		2017			2018		2017
Other noninterest income by instrument type:
Fund management fees	$	5,479	$	5,198		$	17,144	$	15,903
Net gains (losses) on revaluation of foreign currency instruments, net of foreign exchange forward contracts(1)	796		(100		)	985		1,455
Other service revenue	5,747		10,798			20,542		23,770
Total other noninterest income	$	12,022	$	15,896		$	38,671	$	41,128

(1) Represents the net revaluation of client and internal foreign currency denominated financial instruments. We enter into foreign exchange forward contracts to economically reduce our foreign exchange exposure related to client and internal foreign currency denominated financial instruments.

Disaggregation of Revenue from Contracts with Customers

The following tables present our revenues from contracts with customers disaggregated by revenue source and segment for the three and nine months endedSeptember 30, 2018:

Three months ended September 30, 2018 (Dollars in thousands)	Global Commercial Bank		SVB Private   Bank			SVB Capital		Other Income		Total
Revenue from contracts with customers:
Spot contract commissions	$	29,776	$	184		$	—	$	81	$	30,041
Card interchange fees, gross	33,905		—			—		108		34,013
Merchant service fees	3,677		2			—		—		3,679
Deposit service charges	19,207		24			—		357		19,588
Client investment fees	14,740		420			—		21,105		36,265
Fund management fees	—		—			5,479		—		5,479
Correspondent bank rebates	1,372		—			—		—		1,372
Total revenue from contracts with customers	$	102,677	$	630		$	5,479	$	21,651	$	130,437
Revenues outside the scope of ASC 606 (1)	11,446		(25		)	18,944		49,268		79,633
Total noninterest income	$	114,123	$	605		$	24,423	$	70,919	$	210,070

(1) Amounts are accounted for under separate guidance than ASC 606.

Nine months ended September 30, 2018 (Dollars in thousands)	Global Commercial Bank		SVB Private   Bank			SVB Capital		Other Income		Total
Revenue from contracts with customers:
Spot contract commissions	$	92,098	$	507		$	—	$	186	$	92,791
Card interchange fees, gross	95,088		—			—		311		95,399
Merchant service fees	10,008		2			—		—		10,010
Deposit service charges	54,633		83			—		1,365		56,081
Client investment fees	36,885		1,101			—		50,606		88,592
Fund management fees	—		—			17,144		—		17,144
Correspondent bank rebates	4,241		—			—		—		4,241
Total revenue from contracts with customers	$	292,953	$	1,693		$	17,144	$	52,468	$	364,258
Revenues outside the scope of ASC 606 (1)	33,761		(16		)	64,688		95,586		194,019
Total noninterest income	$	326,714	$	1,677		$	81,832	$	148,054	$	558,277

(1) Amounts are accounted for under separate guidance than ASC 606.

XML

Other Noninterest Expense

9 Months Ended

Sep. 30, 2018

Other Income and Expenses [Abstract]

Other Noninterest Expense

Other Noninterest Expense

A summary of other noninterest expense for the three and nine months endedSeptember 30, 2018 and 2017 is as follows:

	Three months ended September 30,				Nine months ended September 30,
(Dollars in thousands)	2018		2017		2018		2017
Lending and other client related processing costs	$	5,698	$	6,935	$	16,301	$	18,806
Data processing services	2,740		2,244		7,934		7,254
Telephone	2,269		2,518		7,025		7,892
Dues and publications	1,387		883		3,081		2,355
Postage and supplies	652		612		2,133		2,013
Other	5,393		4,872		15,171		16,350
Total other noninterest expense	$	18,139	$	18,064	$	51,645	$	54,670

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Segment Reporting

9 Months Ended

Sep. 30, 2018

Segment Reporting [Abstract]

Segment Reporting

Segment Reporting

We have three reportable segments for management reporting purposes: Global Commercial Bank, SVB Private Bank and SVB Capital. The results of our operating segments are based on our internal management reporting process.

Our Global Commercial Bank and SVB Private Bank segments' primary source of revenue is from net interest income, which is primarily the difference between interest earned on loans, net of funds transfer pricing (“FTP”), and interest paid on deposits, net of FTP. Accordingly, these segments are reported using net interest income, net of FTP. FTP is an internal measurement framework designed to assess the financial impact of a financial institution’s sources and uses of funds. It is the mechanism by which a funding credit is given for deposits raised, and a funding charge is made for loans funded. FTP is calculated at an instrument level based on account characteristics.

We also evaluate performance based on provision for credit losses, noninterest income and noninterest expense, which are presented as components of segment operating profit or loss. In calculating each operating segment’s noninterest expense, we consider the direct costs incurred by the operating segment as well as certain allocated direct costs. As part of this review, we allocate certain corporate overhead costs to a corporate account. We do not allocate income tax expense or the provision for unfunded credit commitments (included in provision for credit losses) to our segments. Additionally, our management reporting model is predicated on average asset balances; therefore, period-end asset balances are not presented for segment reporting purposes. Changes in an individual client’s primary relationship designation have resulted, and in the future may result, in the inclusion of certain clients in different segments in different periods.

Unlike financial reporting, which benefits from the comprehensive structure provided by GAAP, our internal management reporting process is highly subjective, as there is no comprehensive, authoritative guidance for management reporting. Our management reporting process measures the performance of our operating segments based on our internal operating structure, which is subject to change from time to time, and is not necessarily comparable with similar information for other financial services companies.

For reporting purposes, SVB Financial Group has three operating segments for which we report our financial information:

• Global Commercial Bank is comprised of results from the following:

◦ Our Commercial Bank products and services are provided by the Bank and its subsidiaries to commercial clients in the technology, life science/healthcare and private equity/venture capital industries. The Bank provides solutions to the financial needs of commercial clients, through credit, global treasury management, foreign exchange, global trade finance, and other services. It serves clients within the United States, as well as non-U.S. clients in key international innovation markets. In addition, the Bank and its subsidiaries offer a variety of investment services and solutions to its clients that enable them to effectively manage their assets. 

◦ Our Private Equity Division provides banking products and services primarily to our private equity and venture capital clients.

◦ Our Wine practice provides banking products and services to our premium wine industry clients, including vineyard development loans. 

◦ SVB Analytics previously provided equity valuation services and currently provides research for investors and companies in the global innovation economy. In September 2017, SVB Analytics sold its equity valuation services business.

◦ Debt Fund Investments comprised of our investments in certain debt funds in which we are a strategic investor.

• SVB Private Bank is the private banking division of the Bank, which provides a range of personal financial solutions for consumers. Our clients are primarily private equity/venture capital professionals and executive leaders of the innovation companies they support. We offer a customized suite of private banking services, including mortgages, home equity lines of credit, restricted stock purchase loans, capital call lines of credit and other secured and unsecured lending, as well as cash and wealth management services. 

• SVB Capital is the funds management business of SVBFG, which focuses primarily on venture capital investments. SVB Capital manages funds (primarily venture capital funds) on behalf of third-party limited partners and, on a more limited basis, SVB Financial Group. The SVB Capital family of funds is comprised of direct venture funds that invest in companies and funds of funds that invest in other venture capital funds. SVB Capital generates income for the Company primarily from investment returns (including carried interest allocations) and management fees.

The summary financial results of our operating segments are presented along with a reconciliation to our consolidated interim results.

Our segment information for the three and nine months endedSeptember 30, 2018 and 2017 is as follows:

(Dollars in thousands)	Global Commercial Bank (1)			SVB Private   Bank			SVB Capital (1)			Other Items (2)			Total
Three months ended September 30, 2018
Net interest income	$	431,036		$	14,919		$	6		$	47,261		$	493,222
(Provision for) reduction of credit losses	(19,074		)	(362		)	—			2,262			(17,174		)
Noninterest income	114,123			605			24,423			70,919			210,070
Noninterest expense (3)	(206,487		)	(6,760		)	(6,469		)	(89,729		)	(309,445		)
Income before income tax expense (4)	$	319,598		$	8,402		$	17,960		$	30,713		$	376,673
Total average loans, net of unearned income	$	22,925,909		$	2,928,576		$	—		$	476,892		$	26,331,377
Total average assets (5)	54,296,808			2,538,662			388,531			(758,964		)	56,465,037
Total average deposits	47,037,693			1,505,746			—			548,801			49,092,240
Three months ended September 30, 2017
Net interest income	$	337,860		$	14,600		$	15		$	21,499		$	373,974
Provision for credit losses	(20,874		)	(1,535		)	—			(1,113		)	(23,522		)
Noninterest income	97,227			460			13,913			47,178			158,778
Noninterest expense (3)	(178,306		)	(4,706		)	(4,873		)	(69,876		)	(257,761		)
Income (loss) before income tax expense (4)	$	235,907		$	8,819		$	9,055		$	(2,312	)	$	251,469
Total average loans, net of unearned income	$	18,807,616		$	2,499,507		$	—		$	277,769		$	21,584,892
Total average assets (5)	47,809,890			2,538,400			323,417			(876,341		)	49,795,366
Total average deposits	42,376,024			1,231,390			—			435,428			44,042,842
Nine months ended September 30, 2018
Net interest income	$	1,209,960		$	46,811		$	22		$	122,735		$	1,379,528
Provision for credit losses	(71,704		)	(2,384		)	—			(138		)	(74,226		)
Noninterest income	326,714			1,677			81,832			148,054			558,277
Noninterest expense (3)	(591,434		)	(18,729		)	(17,182		)	(253,256		)	(880,601		)
Income before income tax expense (4)	$	873,536		$	27,375		$	64,672		$	17,395		$	982,978
Total average loans, net of unearned income	$	21,781,557		$	2,791,910		$	—		$	434,810		$	25,008,277
Total average assets (5)	52,277,701			2,548,184			379,809			(773,042		)	54,432,652
Total average deposits	45,701,317			1,519,200			—			513,845			47,734,362
Nine months ended September 30, 2017
Net interest income	$	924,789		$	42,952		$	41		$	58,881		$	1,026,663
Provision for credit losses	(65,007		)	(2,266		)	—			(2,789		)	(70,062		)
Noninterest income	260,650			1,715			45,707			96,893			404,965
Noninterest expense (3)	(528,807		)	(12,675		)	(14,537		)	(190,621		)	(746,640		)
Income (loss) before income tax expense (4)	$	591,625		$	29,726		$	31,211		$	(37,636	)	$	614,926
Total average loans, net of unearned income	$	18,125,020		$	2,371,027		$	—		$	230,420		$	20,726,467
Total average assets (5)	45,408,476			2,403,777			333,439			(580,641		)	47,565,051
Total average deposits	40,398,413			1,289,990			—			373,232			42,061,635

(1) Global Commercial Bank’s and SVB Capital’s components of net interest income, noninterest income, noninterest expense and total average assets are shown net of noncontrolling interests for all periods presented. Noncontrolling interest is included within “Other Items."

(2) The “Other Items” column reflects the adjustments necessary to reconcile the results of the operating segments to the consolidated financial statements prepared in conformity with GAAP. Net interest income consists primarily of interest earned from our fixed income investment portfolio, net of FTP. Noninterest income consists primarily of gains on equity warrant assets and gains or losses on the sale of fixed income investments and equity securities from exercised warrant assets. Noninterest expense consists primarily of expenses associated with corporate support functions such as finance, human resources, marketing, legal and other expenses.

(3) The Global Commercial Bank segment includes direct depreciation and amortization of $5.5 million and $6.1 million for the three months ended September 30, 2018 and 2017, respectively, and $16.6 million and $19.4 million for the nine months endedSeptember 30, 2018 and 2017, respectively.

(4) The internal reporting model used by management to assess segment performance does not calculate income tax expense by segment. Our effective tax rate is a reasonable approximation of the segment rates.

(5) Total average assets equal the greater of total average assets or the sum of total average liabilities and total average stockholders’ equity for each segment to reconcile the results to the consolidated financial statements prepared in conformity with GAAP.

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Off-Balance Sheet Arrangements, Guarantees and Other Commitments

9 Months Ended

Sep. 30, 2018

Disclosure Off Balance Sheet Arrangements Guarantees And Other Commitments Additional Information [Abstract]

Off-Balance Sheet Arrangements, Guarantees and Other Commitments

Off-Balance Sheet Arrangements, Guarantees and Other Commitments

In the normal course of business, we use financial instruments with off-balance sheet risk to meet the financing needs of our customers. These financial instruments include commitments to extend credit, commercial and standby letters of credit and commitments to invest in venture capital and private equity fund investments. These instruments involve, to varying degrees, elements of credit risk. Credit risk is defined as the possibility of sustaining a loss because other parties to the financial instrument fail to perform in accordance with the terms of the contract.

Commitments to Extend Credit

The following table summarizes information related to our commitments to extend credit at September 30, 2018 and December 31, 2017:

(Dollars in thousands)	September 30, 2018		December 31, 2017
Loan commitments available for funding: (1)
Fixed interest rate commitments	$	1,768,904	$	1,478,157
Variable interest rate commitments	14,698,357		14,034,169
Total loan commitments available for funding	16,467,261		15,512,326
Commercial and standby letters of credit (2)	2,072,253		1,950,211
Total unfunded credit commitments	$	18,539,514	$	17,462,537
Commitments unavailable for funding (3)	$	2,458,846	$	2,117,057
Allowance for unfunded credit commitments (4)	51,808		51,770

(1) Represents commitments which are available for funding, due to clients meeting all collateral, compliance and financial covenants required under loan commitment agreements.

(2) See below for additional information on our commercial and standby letters of credit.

(3) Represents commitments which are currently unavailable for funding, due to clients failing to meet all collateral, compliance and financial covenants under loan commitment agreements.

(4) Our allowance for unfunded credit commitments includes an allowance for both our unfunded loan commitments and our letters of credit.

Commercial and Standby Letters of Credit

The table below summarizes our commercial and standby letters of credit at September 30, 2018. The maximum potential amount of future payments represents the amount that could be remitted under letters of credit if there were a total default by the guaranteed parties, without consideration of possible recoveries under recourse provisions or from the collateral held or pledged.

(Dollars in thousands)	Expires In One Year or Less		Expires After One Year		Total Amount Outstanding		Maximum Amount of Future Payments
Financial standby letters of credit	$	1,906,562	$	41,565	$	1,948,127	$	1,948,127
Performance standby letters of credit	84,402		15,666		100,068		100,068
Commercial letters of credit	23,707		351		24,058		24,058
Total	$	2,014,671	$	57,582	$	2,072,253	$	2,072,253

Deferred fees related to financial and performance standby letters of credit were $11.9 million at September 30, 2018 and $12.4 million at December 31, 2017. At September 30, 2018, collateral in the form of cash of $1.1 billion was available to us to reimburse losses, if any, under financial and performance standby letters of credit.

Commitments to Invest in Venture Capital and Private Equity Funds

Subject to applicable regulatory requirements, including the Volcker Rule, we make commitments to invest in venture capital and private equity funds, which generally makes investments in privately-held companies. Commitments to invest in these funds are generally made for a 10-year period from the inception of the fund. Although the limited partnership agreements governing these investments typically do not restrict the general partners from calling 100% of committed capital in one year, it is customary for these funds to call most of the capital commitments over 5 to 7 years, and in certain cases, the funds may not call 100% of committed capital. The actual timing of future cash requirements to fund these commitments is generally dependent upon the investment cycle, overall market conditions, and the nature and type of industry in which the privately held companies operate. The following table details our total capital commitments, unfunded capital commitments, and our ownership percentage in each fund at September 30, 2018:

(Dollars in thousands)	SVBFG Capital Commitments		SVBFG Unfunded     Commitments		SVBFG Ownership   of each Fund (3)
CP I, LP	$	6,000	$	270	10.7	%
CP II, LP (1)	1,200		162		5.1
Shanghai Yangpu Venture Capital Fund (LP)	844		—		6.8
Strategic Investors Fund, LP	15,300		688		12.6
Strategic Investors Fund II, LP	15,000		1,050		8.6
Strategic Investors Fund III, LP	15,000		1,275		5.9
Strategic Investors Fund IV, LP	12,239		2,325		5.0
Strategic Investors Fund V funds	515		131		Various
Capital Preferred Return Fund, LP	12,688		—		20.0
Growth Partners, LP	24,670		1,340		33.0
Debt funds (equity method accounting)	48,443		—		Various
Other fund investments (2)	298,168		8,366		Various
Total	$	450,067	$	15,607

(1) Our ownership includes direct ownership of 1.3 percent and indirect ownership interest of 3.8 percent through our investment in Strategic Investors Fund II, LP.

(2) Represents commitments to 223 funds (primarily venture capital funds) where our ownership interest is generally less than five percent of the voting interests of each such fund.

(3) We are subject to the Volcker Rule, which restricts or limits us from sponsoring or having ownership interests in “covered” funds including venture capital and private equity funds. See “Business - Supervision and Regulation” under Part 1, Item 1 of our 2017 Form 10-K.

The following table details the amounts of remaining unfunded commitments to venture capital and private equity funds by our consolidated managed funds of funds (including our interest and the noncontrolling interests) at September 30, 2018:

(Dollars in thousands)	Unfunded Commitments
Strategic Investors Fund, LP	$	1,338
Capital Preferred Return Fund, LP	2,658
Growth Partners, LP	1,779
Total	$	5,775

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Income Taxes

9 Months Ended

Sep. 30, 2018

Income Tax Disclosure [Abstract]

Income Taxes

Income Taxes

We are subject to income tax in the U.S. federal jurisdiction and various state and foreign jurisdictions and have identified our federal tax and California tax returns as major tax filings. Our U.S. federal tax returns for 2015 and subsequent tax years remain open to full examination. Our California tax returns for 2013 and subsequent tax years remain open to full examination.

At September 30, 2018, our unrecognized tax benefit was $13.2 million, the recognition of which would reduce our income tax expense by $10.2 million. We do not expect that our unrecognized tax benefit will materially change in the next 12 months.

We recognize interest and penalties related to income tax matters as part of income before income taxes. Interest and penalties were not material for the three or nine months ended September 30, 2018.

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Fair Value of Financial Instruments

9 Months Ended

Sep. 30, 2018

Fair Value Disclosures [Abstract]

Fair Value of Financial Instruments

Fair Value of Financial Instruments

Fair Value Measurements

Our available-for-sale securities, derivative instruments and certain non-marketable and other equity securities are financial instruments recorded at fair value on a recurring basis. We make estimates regarding valuation of assets and liabilities measured at fair value in preparing our interim consolidated financial statements.

Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability (the “exit price”) in an orderly transaction between market participants at the measurement date. There is a three-level hierarchy for disclosure of assets and liabilities recorded at fair value. The classification of assets and liabilities within the hierarchy is based on whether the inputs to the valuation methodology used for measurement are observable or unobservable and on the significance of those inputs in the fair value measurement. Observable inputs reflect market-derived or market-based information obtained from independent sources, while unobservable inputs reflect our estimates about market data and views of market participants. The three levels for measuring fair value are based on the reliability of inputs and are as follows:

Level 1

Fair value measurements based on quoted prices in active markets for identical assets or liabilities that we have the ability to access. Since valuations are based on quoted prices that are readily and regularly available in an active market, valuation of these instruments does not entail a significant degree of judgment. Assets utilizing Level 1 inputs include U.S. Treasury securities, exchange-traded equity securities and certain marketable securities accounted for under fair value accounting.

Level 2

Fair value measurements based on quoted prices in markets that are not active or for which all significant inputs are observable, directly or indirectly. Valuations for the available-for-sale securities are provided by independent pricing service providers who have experience in valuing these securities and by comparison to and/or average of quoted market prices obtained from independent brokers. We perform a monthly analysis on the values received from third parties to ensure that the prices represent a reasonable estimate of the fair value. The procedures include, but are not limited to, initial and ongoing review of third-party pricing methodologies, review of pricing trends and monitoring of trading volumes. Additional corroboration, such as obtaining a non-binding price from a broker, may be obtained depending on the frequency of trades of the security and the level of liquidity or depth of the market. We ensure prices received from independent brokers represent a reasonable estimate of the fair value through the use of observable market inputs including comparable trades, yield curve, spreads and, when available, market indices. As a result of this analysis, if the Company determines that there is a more appropriate fair value based upon the available market data, the price received from the third party is adjusted accordingly. Below is a summary of the significant inputs used for each class of Level 2 assets and liabilities:

U.S. agency debentures: Fair value measurements of U.S. agency debentures are based on the characteristics specific to bonds held, such as issuer name, coupon rate, maturity date and any applicable issuer call option features. Valuations are based on market spreads relative to similar term benchmark market interest rates, generally U.S. Treasury securities.

Agency-issued mortgage-backed securities: Agency-issued mortgage-backed securities are pools of individual conventional mortgage loans underwritten to U.S. agency standards with similar coupon rates, tenor, and other attributes such as geographic location, loan size and origination vintage. Fair value measurements of these securities are based on observable price adjustments relative to benchmark market interest rates taking into consideration estimated loan prepayment speeds.

Agency-issued collateralized mortgage obligations: Agency-issued collateralized mortgage obligations are structured into classes or tranches with defined cash flow characteristics and are collateralized by U.S. agency-issued mortgage pass-through securities. Fair value measurements of these securities incorporate similar characteristics of mortgage pass-through securities such as coupon rate, tenor, geographic location, loan size and origination vintage, in addition to incorporating the effect of estimated prepayment speeds on the cash flow structure of the class or tranche. These measurements incorporate observable market spreads over an estimated average life after considering the inputs listed above.

Agency-issued commercial mortgage-backed securities: Fair value measurements of these securities are based on spreads to benchmark market interest rates (usually U.S. Treasury rates or rates observable in the swaps market), prepayment speeds, loan default rate assumptions and loan loss severity assumptions on underlying loans.

Municipal bonds and notes: Bonds issued by municipal governments generally have stated coupon rates, final maturity dates and are subject to being called ahead of the final maturity date at the option of the issuer. Fair value measurements of these securities are priced based on spreads to other municipal benchmark bonds with similar characteristics; or, relative to market rates on U.S. Treasury bonds of similar maturity.

Interest rate derivative assets and liabilities: Fair value measurements of interest rate derivatives are priced considering the coupon rate of the fixed leg of the contract and the variable coupon on the floating leg of the contract. Valuation is based on both spot and forward rates on the swap yield curve and the credit worthiness of the contract counterparty.

Foreign exchange forward and option contract assets and liabilities: Fair value measurements of these assets and liabilities are priced based on spot and forward foreign currency rates and option volatility assumptions.

Equity warrant assets (public portfolio): Fair value measurements of equity warrant assets of publicly-traded portfolio companies are valued based on the Black-Scholes option pricing model. The model uses the price of publicly-traded companies (underlying stock price), stated strike prices, warrant expiration dates, the risk-free interest rate and market-observable option volatility assumptions.

Level 3

The fair value measurement is derived from valuation techniques that use significant assumptions not observable in the market. These unobservable assumptions reflect our own estimates of assumptions we believe market participants would use in pricing the asset. Below is a summary of the valuation techniques used for each class of Level 3 assets:

Venture capital and private equity fund investments not measured at net asset value: Fair value measurements are based on consideration of a range of factors including, but not limited to, the price at which the investment was acquired, the term and nature of the investment, local market conditions, values for comparable securities, and as it relates to the private company, the current and projected operating performance, exit strategies and financing transactions subsequent to the acquisition of the investment. The significant unobservable inputs used in the fair value measurement include the information about each portfolio company, including actual and forecasted results, cash position, recent or planned transactions and market comparable companies. Significant changes to any one of these inputs in isolation could result in a significant change in the fair value measurement; however, we generally consider all factors available through ongoing communication with the portfolio companies and venture capital fund managers to determine whether there are changes to the portfolio company or the environment that indicate a change in the fair value measurement.

Equity warrant assets (public portfolio): Fair value measurements of equity warrant assets of publicly-traded portfolio companies are valued based on the Black-Scholes option pricing model. The model uses the price of publicly-traded companies (underlying stock price), stated strike prices, warrant expiration dates, the risk-free interest rate and market-observable option volatility assumptions. Modeled asset values are further adjusted by applying a discount of up to 20 percent for certain warrants that have lock-up restrictions or other features that indicate a discount to fair value is warranted. As a lock-up term nears, and other sale restrictions are lifted, discounts are adjusted downward to zero percent once all restrictions expire or are removed.

Equity warrant assets (private portfolio): Fair value measurements of equity warrant assets of private portfolio companies are priced based on a Black-Scholes option pricing model to estimate the asset value by using stated strike prices, option expiration dates, risk-free interest rates and option volatility assumptions. Option volatility assumptions used in the model are based on public market indices whose members operate in similar industries as companies in our private company portfolio. Option expiration dates are modified to account for estimates to actual life relative to stated expiration. Overall model asset values are further adjusted for a general lack of liquidity due to the private nature of the associated underlying company. There is a direct correlation between changes in the volatility and remaining life assumptions in isolation and the fair value measurement while there is an inverse correlation between changes in the liquidity discount assumption and the fair value measurement.

It is our policy to maximize the use of observable inputs and minimize the use of unobservable inputs when developing fair value measurements. When available, we use quoted market prices to measure fair value. If market prices are not available, fair value measurement is based upon valuation techniques that use primarily market-based or independently-sourced market parameters, including interest rate yield curves, prepayment speeds, option volatilities and currency rates. Substantially all of our financial instruments use the foregoing methodologies, and are categorized as a Level 1 or Level 2 measurement in the fair value hierarchy. However, in certain cases, when market observable inputs for our valuation techniques may not be readily available, we are required to make judgments about assumptions we believe market participants would use in estimating the fair value of the financial instrument, and based on the significance of those judgments, the measurement may be determined to be a Level 3 fair value measurement.

The degree of management judgment involved in determining the fair value of a financial instrument is dependent upon the availability of quoted market prices or observable market parameters. For financial instruments that trade actively and have quoted market prices or observable market parameters, there is minimal subjectivity involved in measuring fair value. When observable market prices and parameters are not fully available, management judgment is necessary to estimate fair value. For inactive markets, there is little information, if any, to evaluate if individual transactions are orderly. Accordingly, we are required to estimate, based upon all available facts and circumstances, the degree to which orderly transactions are occurring and provide more weighting to price quotes that are based upon orderly transactions. In addition, changes in the market conditions may reduce the availability of quoted prices or observable data. For example, reduced liquidity in the capital markets or changes in secondary market activities could result in observable market inputs becoming unavailable. Therefore, when market data is not available, we use valuation techniques requiring more management judgment to estimate the appropriate fair value measurement. Accordingly, the degree of judgment exercised by management in determining fair value is greater for financial assets and liabilities categorized as Level 3.

The following fair value hierarchy table presents information about our assets and liabilities that are measured at fair value on a recurring basis as of September 30, 2018:

(Dollars in thousands)	Level 1		Level 2		Level 3		Balance at September 30, 2018
Assets:
Available-for-sale securities:
U.S. Treasury securities	$	5,501,874	$	—	$	—	$	5,501,874
U.S. agency debentures	—		1,346,672		—		1,346,672
Residential mortgage-backed securities:
Agency-issued collateralized mortgage obligations—fixed rate	—		1,920,541		—		1,920,541
Agency-issued collateralized mortgage obligations—variable rate	—		318,522		—		318,522
Total available-for-sale securities	5,501,874		3,585,735		—		9,087,609
Non-marketable and other equity securities (fair value accounting):
Non-marketable securities:
Venture capital and private equity fund investments measured at net asset value	—		—		—		334,419
Venture capital and private equity fund investments not measured at net asset value (1)	—		—		1,001		1,001
Other equity securities in public companies	2,184		28,276		—		30,460
Total non-marketable and other equity securities (fair value accounting)	2,184		28,276		1,001		365,880
Other assets:
Foreign exchange forward and option contracts	—		81,903		—		81,903
Equity warrant assets	—		6,478		140,489		146,967
Client interest rate derivatives	—		6,262		—		6,262
Total assets	$	5,504,058	$	3,708,654	$	141,490	$	9,688,621
Liabilities:
Foreign exchange forward and option contracts	$	—	$	76,165	$	—	$	76,165
Client interest rate derivatives	—		15,156		—		15,156
Total liabilities	$	—	$	91,321	$	—	$	91,321

(1) Included in Level 3 assets is $0.9 million attributable to noncontrolling interests calculated based on the ownership percentages of the noncontrolling interests.

The following fair value hierarchy table presents information about our assets and liabilities that are measured at fair value on a recurring basis as of December 31, 2017:

(Dollars in thousands)	Level 1		Level 2		Level 3		Balance at December 31, 2017
Assets:
Available-for-sale securities:
U.S. Treasury securities	$	6,840,502	$	—	$	—	$	6,840,502
U.S. agency debentures	—		1,567,128		—		1,567,128
Residential mortgage-backed securities:
Agency-issued collateralized mortgage obligations—fixed rate	—		2,267,035		—		2,267,035
Agency-issued collateralized mortgage obligations—variable rate	—		373,730		—		373,730
Equity securities	158		72,111		—		72,269
Total available-for-sale securities	6,840,660		4,280,004		—		11,120,664
Non-marketable and other equity securities (fair value accounting):
Non-marketable securities:
Venture capital and private equity fund investments measured at net asset value	—		—		—		127,192
Venture capital and private equity fund investments not measured at net asset value (1)	—		—		919		919
Other equity securities in public companies (1)	310		—		—		310
Total non-marketable and other equity securities (fair value accounting)	310		—		919		128,421
Other assets:
Foreign exchange forward and option contracts	—		96,636		—		96,636
Equity warrant assets	—		2,432		121,331		123,763
Client interest rate derivatives	—		11,753		—		11,753
Total assets	$	6,840,970	$	4,390,825	$	122,250	$	11,481,237
Liabilities:
Foreign exchange forward and option contracts	$	—	$	96,641	$	—	$	96,641
Client interest rate derivatives	—		11,940		—		11,940
Total liabilities	$	—	$	108,581	$	—	$	108,581

(1) Included in Level 1 and Level 3 assets are $0.2 million and $0.8 million, respectively, attributable to noncontrolling interests calculated based on the ownership percentages of the noncontrolling interests.

The following table presents additional information about Level 3 assets measured at fair value on a recurring basis for the three and nine months endedSeptember 30, 2018 and 2017:

(Dollars in thousands)	Beginning Balance		Total Realized and Unrealized Gains (Losses) Included in Income			Sales/Exits			Issuances		Distributions and Other Settlements		Transfers Out of Level 3			Ending Balance
Three months ended September 30, 2018
Non-marketable and other securities (fair value accounting):
Venture capital and private equity fund investments not measured at net asset value (1)	$	1,001	$	—		$	—		$	—	$	—	$	—		$	1,001
Other assets:
Equity warrant assets (2)	137,753		32,237			(34,101		)	4,809		—		(209		)	140,489
Total assets	$	138,754	$	32,237		$	(34,101	)	$	4,809	$	—	$	(209	)	$	141,490
Three months ended September 30, 2017
Non-marketable and other securities (fair value accounting):
Venture capital and private equity fund investments not measured at net asset value (1)	$	1,897	$	—		$	—		$	—	$	—	$	—		$	1,897
Other assets:
Equity warrant assets (2)	128,952		24,354			(17,412		)	3,622		—		(441		)	139,075
Total assets	$	130,849	$	24,354		$	(17,412	)	$	3,622	$	—	$	(441	)	$	140,972
Nine months ended September 30, 2018
Non-marketable and other securities (fair value accounting):
Other venture capital investments (1)	$	919	$	82		$	—		$	—	$	—	$	—		$	1,001
Other assets:
Equity warrant assets (2)	121,331		69,097			(61,464		)	14,007		—		(2,482		)	140,489
Total assets	$	122,250	$	69,179		$	(61,464	)	$	14,007	$	—	$	(2,482	)	$	141,490
Nine months ended September 30, 2017
Non-marketable and other securities (fair value accounting):
Other venture capital investments (1)	$	2,040	$	(143	)	$	—		$	—	$	—	$	—		$	1,897
Other assets:
Equity warrant assets (2)	128,813		41,549			(40,998		)	11,071		—		(1,360		)	139,075
Total assets	$	130,853	$	41,406		$	(40,998	)	$	11,071	$	—	$	(1,360	)	$	140,972

(1) Realized and unrealized gains (losses) are recorded in the line item “Gains on investment securities, net," a component of noninterest income.

(2) Realized and unrealized gains (losses) are recorded in the line item “Gains on equity warrant assets, net," a component of noninterest income.

The following table presents the amount of net unrealized gains and losses included in earnings (which is inclusive of noncontrolling interest) attributable to Level 3 assets still held at September 30, 2018 and 2017:

	Three months ended September 30,				Nine months ended September 30,
(Dollars in thousands)	2018		2017		2018		2017
Non-marketable and other securities (fair value accounting):
Venture capital and private equity fund investments not measured at net asset value (1)	$	—	$	—	$	82	$	(143	)
Other assets:
Equity warrant assets (2)	15,841		17,827		30,954		23,734
Total unrealized gains, net	$	15,841	$	17,827	$	31,036	$	23,591
Unrealized gains (losses) attributable to noncontrolling interests (1)	$	—	$	—	$	73	$	(127	)

(1) Unrealized gains (losses) are recorded in the line item “Gains on investment securities, net," a component of noninterest income.

(2) Unrealized gains (losses) are recorded in the line item “Gains on equity warrant assets, net," a component of noninterest income.

The extent to which any unrealized gains or losses will become realized is subject to a variety of factors, including, among other things, the expiration of current sales restrictions to which these securities are subject, the actual sales of securities and the timing of such actual sales.

The following table presents quantitative information about the significant unobservable inputs used for certain of our Level 3 fair value measurements at September 30, 2018 and December 31, 2017. We have not included in this table our venture capital and private equity fund investments (fair value accounting) as we use net asset value per share (as obtained from the general partners of the investments) as a practical expedient to determine fair value.

(Dollars in thousands)	Fair value		Valuation Technique	Significant Unobservable Inputs	Weighted  Average
September 30, 2018:
Venture capital and private equity fund investments (fair value accounting)	$	1,001	Private company equity pricing	(1)	(1	)
Equity warrant assets (public portfolio)	1,805		Black-Scholes option pricing model	Volatility	53.1	%
				Risk-Free interest rate	3.0
				Sales restrictions discount (2)	14.1
Equity warrant assets (private portfolio)	138,684		Black-Scholes option pricing model	Volatility	38.2
				Risk-Free interest rate	2.8
				Marketability discount (3)	17.2
				Remaining life assumption (4)	45.0
December 31, 2017:
Venture capital and private equity fund investments (fair value accounting)	$	919	Private company equity pricing	(1)	(1	)
Equity warrant assets (public portfolio)	1,936		Black-Scholes option pricing model	Volatility	47.9	%
				Risk-Free interest rate	2.1
				Sales restrictions discount (2)	15.5
Equity warrant assets (private portfolio)	119,395		Black-Scholes option pricing model	Volatility	36.7
				Risk-Free interest rate	1.8
				Marketability discount (3)	16.4
				Remaining life assumption (4)	45.0

(1) In determining the fair value of our venture capital and private equity fund investment portfolio (not measured at net asset value), we evaluate a variety of factors related to each underlying private portfolio company including, but not limited to, actual and forecasted results, cash position, recent or planned transactions and market comparable companies. Additionally, we have ongoing communication with the portfolio companies and venture capital fund managers, to determine whether there is a material change in fair value. We use company provided valuation reports, if available, to support our valuation assumptions. These factors are specific to each portfolio company and a weighted average or range of values of the unobservable inputs is not meaningful.

(2) We adjust quoted market prices of public companies, which are subject to certain sales restrictions. Sales restriction discounts generally range from 10 percent to 20 percent depending on the duration of the sales restrictions, which typically range from three to six months.

(3) Our marketability discount is applied to all private company warrants to account for a general lack of liquidity due to the private nature of the associated underlying company. The quantitative measure used is based upon various option-pricing models. On a quarterly basis, a sensitivity analysis is performed on our marketability discount.

(4) We adjust the contractual remaining term of private company warrants based on our estimate of the actual remaining life, which we determine by utilizing historical data on cancellations and exercises. At September 30, 2018, the weighted average contractual remaining term was 6.2 years, compared to our estimated remaining life of 2.8 years. On a quarterly basis, a sensitivity analysis is performed on our remaining life assumption.

For the three and nine months endedSeptember 30, 2018 and 2017, we did not have any transfers between Level 2 and Level 1 or transfers between Level 3 and Level 1. All transfers from Level 3 to Level 2 for the three and nine months endedSeptember 30, 2018 and 2017 were due to the transfer of equity warrant assets from our private portfolio to our public portfolio (see our Level 3 reconciliation above). All amounts reported as transfers represent the fair value as of the date of the change in circumstances that caused the transfer.

Financial Instruments not Carried at Fair Value

FASB guidance over financial instruments requires that we disclose estimated fair values for our financial instruments not carried at fair value. The following fair value hierarchy table presents the estimated fair values of our financial instruments that are not carried at fair value at September 30, 2018 and December 31, 2017:

			Estimated Fair Value
(Dollars in thousands)	Carrying Amount		Total		Level 1		Level 2		Level 3
September 30, 2018:
Financial assets:
Cash and cash equivalents	$	3,819,141	$	3,819,141	$	3,819,141	$	—	$	—
Held-to-maturity securities	15,899,726		15,372,238		—		15,372,238		—
Non-marketable securities not measured at net asset value	134,646		134,646		—		—		134,646
Non-marketable securities measured at net asset value	134,017		134,017		—		—		—
Net commercial loans	24,253,625		23,285,628		—		—		23,285,628
Net consumer loans	2,955,577		2,809,916		—		—		2,809,916
FHLB and Federal Reserve Bank stock	102,378		102,378		—		—		102,378
Financial liabilities:
Short-term borrowings	2,631,252		2,631,252		—		2,631,252		—
Non-maturity deposits (1)	48,518,701		48,518,701		48,518,701		—		—
Time deposits	77,410		77,047		—		77,047		—
3.50% Senior Notes	347,554		338,370		—		338,370		—
5.375% Senior Notes	348,663		363,447		—		363,447		—
Off-balance sheet financial assets:
Commitments to extend credit	—		22,857		—		—		22,857
December 31, 2017:
Financial assets:
Cash and cash equivalents	$	2,923,075	$	2,923,075	$	2,923,075	$	—	$	—
Held-to-maturity securities	12,663,455		12,548,280		—		12,548,280		—
Non-marketable securities (cost and equity method accounting) not measured at net asset value	120,019		126,345		—		—		126,345
Non-marketable securities (cost and equity method accounting) measured at net asset value	228,399		331,496		—		—		—
Net commercial loans	20,238,247		20,520,623		—		—		20,520,623
Net consumer loans	2,613,045		2,593,538		—		—		2,593,538
FHLB and Federal Reserve Bank stock	60,020		60,020		—		—		60,020
Financial liabilities:
Short-term borrowings	1,033,730		1,033,730		1,033,730		—		—
Non-maturity deposits (1)	44,206,929		44,206,929		44,206,929		—		—
Time deposits	47,146		46,885		—		46,885		—
3.50% Senior Notes	347,303		352,058		—		352,058		—
5.375% Senior Notes	348,189		374,483		—		374,483		—
Off-balance sheet financial assets:
Commitments to extend credit	—		22,208		—		—		22,208

(1) Includes noninterest-bearing demand deposits, interest-bearing checking accounts, money market accounts and interest-bearing sweep deposits.

Investments in Entities that Calculate Net Asset Value Per Share

FASB guidance over certain fund investments requires that we disclose the fair value of funds, significant investment strategies of the investees, redemption features of the investees, restrictions on the ability to sell investments, estimate of the period of time over which the underlying assets are expected to be liquidated by the investee, and unfunded commitments related to the investments.

Our investments in debt funds and venture capital and private equity fund investments generally cannot be redeemed. Alternatively, we expect distributions, if any, to be received primarily through IPO and M&A activity of the underlying assets of the fund. Subject to applicable requirements under the Volcker Rule, we do not have any plans to sell any of these fund investments. If we decide to sell these investments in the future, the investee fund’s management must approve of the buyer before the sale of the investments can be completed. The fair values of the fund investments have been estimated using the net asset value per share of the investments, adjusted for any differences between our measurement date and the date of the fund investment’s net asset value by using the most recently available financial information from the investee general partner, for example June 30^th, for our September 30^th consolidated financial statements, adjusted for any contributions paid, distributions received from the investment, and significant fund transactions or market events during the reporting period.

The following table is a summary of the estimated fair values of these investments and remaining unfunded commitments for each major category of these investments as of September 30, 2018:

(Dollars in thousands)	Carrying Amount		Fair Value		Unfunded Commitments
Non-marketable securities (fair value accounting):
Venture capital and private equity fund investments (1)	$	334,419	$	334,419	$	13,255
Non-marketable securities (equity method accounting):
Venture capital and private equity fund investments (2)	112,537		112,537		4,943
Debt funds (2)	5,241		5,241		—
Other investments (2)	16,239		16,239		886
Total	$	468,436	$	468,436	$	19,084

(1) Venture capital and private equity fund investments within non-marketable securities (fair value accounting) include investments made by our managed funds of funds and one of our direct venture funds (consolidated VIEs) and investments in venture capital and private equity fund investments (unconsolidated VIEs). Collectively, these investments in venture capital and private equity funds are primarily in U.S. and global technology and life science/healthcare companies. Included in the fair value and unfunded commitments of fund investments under fair value accounting are $93.0 million and $4.3 million, respectively, attributable to noncontrolling interests. It is estimated that we will receive distributions from the fund investments over the next 10 to 13 years, depending on the age of the funds and any potential extensions of terms of the funds.

(2) Venture capital and private equity fund investments, debt funds, and other fund investments within non-marketable securities (equity method accounting) include funds that invest in or lend money to primarily U.S. and global technology and life science/healthcare companies. It is estimated that we will receive distributions from the funds over the next 5 to 8 years, depending on the age of the funds and any potential extensions of the terms of the funds.

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Legal Matters

9 Months Ended

Sep. 30, 2018

Commitments and Contingencies Disclosure [Abstract]

Legal Matters

Legal Matters

Certain lawsuits and claims arising in the ordinary course of business have been filed or are pending against us and/or our affiliates, and we may from time to time be involved in other legal or regulatory proceedings. In accordance with applicable accounting guidance, we establish accruals for all such matters, including expected settlements, when we believe it is probable that a loss has been incurred and the amount of the loss is reasonably estimable. When a loss contingency is not both probable and estimable, we do not establish an accrual. Any such loss estimates are inherently uncertain, based on currently available information and are subject to management’s judgment and various assumptions. Due to the inherent subjectivity of these estimates and unpredictability of outcomes of legal proceedings, any amounts accrued may not represent the ultimate resolution of such matters.

To the extent we believe any potential loss relating to such matters may have a material impact on our liquidity, consolidated financial position, results of operations, and/or our business as a whole and is reasonably possible but not probable, we aim to disclose information relating to such potential loss. We also aim to disclose information relating to any material potential loss that is probable but not reasonably estimable. In such cases, where reasonably practicable, we aim to provide an estimate of loss or range of potential loss. No disclosures are generally made for any loss contingencies that are deemed to be remote.

Based upon information available to us, our review of lawsuits and claims filed or pending against us to date and consultation with our outside legal counsel, we have not recognized a material accrual liability for any such matters, nor do we currently expect that these matters will result in a material liability to the Company. However, the outcome of litigation and other legal and regulatory matters is inherently uncertain, and it is possible that one or more of such matters currently pending or threatened could have an unanticipated material adverse effect on our liquidity, consolidated financial position, results of operations, and/or our business as a whole, in the future.

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Related Parties

9 Months Ended

Sep. 30, 2018

Related Party Transactions [Abstract]

Related Parties

Related Parties

We have no material related party transactions requiring disclosure. In the ordinary course of business, the Bank may extend credit to related parties, including executive officers, directors, principal shareholders and their related interests. Additionally, we provide real estate secured loans to eligible employees through our EHOP. For additional details, see Note 17—“Employee Compensation and Benefit Plans" under Part II, Item 8 of our 2017 Form 10-K.

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Basis of Presentation (Policies)

9 Months Ended

Sep. 30, 2018

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Principles of Consolidation and Presentation

Principles of Consolidation and Presentation

Our consolidated financial statements include the accounts of SVB Financial Group and consolidated entities. We consolidate voting entities in which we have control through voting interests or entities through which we have a controlling financial interest in a variable interest entity (“VIE”). We determine whether we have a controlling financial interest in a VIE by determining if we have: (a) the power to direct the activities of the VIE that most significantly impact the entity’s economic performance, (b) the obligation to absorb the expected losses, or (c) the right to receive the expected returns of the entity. Generally, we have significant variable interests if our commitments to a limited partnership investment represent a significant amount of the total commitments to the entity. We also evaluate the impact of related parties on our determination of variable interests in our consolidation conclusions. We consolidate VIEs in which we are the primary beneficiary based on a controlling financial interest. If we are not the primary beneficiary of a VIE, we record our pro-rata interests based on our ownership percentage.

VIEs are entities where investors lack sufficient equity at risk for the entity to finance its activities without additional subordinated financial support or equity investors, as a group, lack one of the following characteristics: (a) the power to direct the activities that most significantly impact the entity’s economic performance, (b) the obligation to absorb the expected losses of the entity, or (c) the right to receive the expected returns of the entity. We assess VIEs to determine if we are the primary beneficiary of a VIE.  A primary beneficiary is defined as a variable interest holder that has a controlling financial interest. A controlling financial interest requires both: (a) power to direct the activities that most significantly impact the VIE’s economic performance, and (b) obligation to absorb losses or receive benefits of a VIE that could potentially be significant to a VIE. Under this analysis, we also evaluate kick-out rights and other participating rights which could provide us a controlling financial interest. The primary beneficiary of a VIE is required to consolidate the VIE.

We also evaluate fees paid to managers of our limited partnership investments. We exclude those fee arrangements that are not deemed to be variable interests from the analysis of our interests in our investments in VIEs and the determination of a primary beneficiary, if any. Fee arrangements based on terms that are customary and commensurate with the services provided are deemed not to be variable interests and are, therefore, excluded.

All significant intercompany accounts and transactions with consolidated entities have been eliminated. We have not provided financial or other support during the periods presented to any VIE that we were not previously contractually required to provide.

Recent Accounting Pronouncements

In February 2018, the FASB issued a new accounting standard update (ASU 2018-02, Income Statement - Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income (ASU "2018-02")) to address certain stranded income tax effects in accumulated other comprehensive income ("AOCI") resulting from H.R.1, known as the Tax Cuts and Jobs Act (the "TCJ Act"). ASU 2018-02 changed current accounting whereby an entity may elect to reclassify the stranded tax effect from AOCI to retained earnings in each period in which the effect of the change in the U.S. federal corporate income tax rate in the TCJ Act (or portion thereof) is recorded. ASU 2018-02 is effective for periods beginning after December 15, 2018 and early adoption is permitted. We have elected to early adopt ASU 2018-02 and reclassified approximately $0.3 millionfrom accumulated other comprehensive income to retained earnings within our consolidated statements of stockholders' equity in the first quarter of 2018.

On January 1, 2018, we adopted the new accounting standard update ASU 2016-01, Recognition and Measurement of Financial Assets and Financial Liabilities (Topic 825), which addresses certain aspects of recognition, measurement, presentation and disclosure of financial instruments. This guidance requires equity investments (except those accounted for under the equity method of accounting) to be measured at fair value with changes in fair value recognized in net income. We adopted this guidance using the modified retrospective method and our equity investments carried at cost with readily determinable fair values were re-measured at fair value and the difference between cost and fair value was recorded as a cumulative-effect adjustment to opening retained earnings as of January 1, 2018. The adjustment to opening retained earnings for these investments was $74.6 million, net of tax, with subsequent changes in the fair value of these equity securities recorded as unrealized gains or losses in our consolidated statements of income. Additionally, in accordance with this guidance, net unrealized gains of $29.2 million, net of tax, included in accumulated other comprehensive income on January 1, 2018, related to our previously reported available-for-sale equity securities, were reclassified as an adjustment to retained earnings. Subsequent changes in the fair value of these equity securities were recorded as unrealized gains or losses in our consolidated statements of income. Furthermore, for purposes of disclosing the fair value of loans carried at amortized cost, our valuation methodology was updated to conform to an “exit price” concept as required by the standard update, resulting in an immaterial change in the fair value.

In August 2016, the FASB issued a new accounting standard update (ASU 2016-15, Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments), which clarifies the guidance on eight specific cash flow issues. We adopted the new accounting standard, specifically as it relates to distributions from our equity method investments, on January 1, 2018. We elected to adopt the nature of distribution approach and applied the guidance retrospectively. The new guidance had an immaterial impact on the presentation between investing and operating activities within our statements of cash flows related to distributions and net gains from our nonmarketable and other securities portfolio.

In November 2016, the FASB issued a new accounting standard update (ASU 2016-18, Statement of Cash Flows (Topic 230): Restricted Cash), which requires that a statement of cash flows explains the change during the period in the total cash, cash equivalents, and amounts generally described as restricted cash or restricted cash equivalents.  Therefore, amounts generally described as restricted cash and restricted cash equivalents should be included with cash and cash equivalents when reconciling the beginning of period and end of period total amounts shown on the statement of cash flows.  Previous to the update, there had been some diversity in practice.  Given that we had already classified restricted cash such as cash reserves at the Federal Reserve as part of cash and cash equivalents on the cash flow statement, the update had no impact on how we were already reporting and presenting our statement of cash flows.

Recent Accounting Pronouncements

In February 2016, the FASB issued a new accounting standard update (ASU 2016-02, Leases (Topic 842)), which will require for all operating leases the recognition of a right-of-use asset and a corresponding lease liability, in the statement of financial position. The lease cost will be allocated over the lease term on a straight-line basis. There were further amendments, including practical expedients, with the issuance of ASU 2018-01, “Leases (Topic 842): Land Easement Practical Expedient for Transition to Topic 842” in January 2018. In July 2018 the FASB issued ASU No. 2018-11, "Leases (Topic 842): Targeted Improvements," which provides us with the option to apply the new leasing standard to all open leases as of the adoption date, on a prospective basis. This guidance will be effective on January 1, 2019, with early adoption permitted. We plan to adopt the lease accounting guidance on January 1, 2019, on a prospective basis. We intend to elect the transition "package of expedients" which will result in continuing to account for existing leases for which the commencement date is before January 1, 2019, in accordance with Leases (Topic 840) throughout the lease term, including periods after adoption of the new guidance. We expect the adoption of this standard to have an impact of less than one percent of total assets and liabilities on our consolidated balance sheets reflective of the recognition of right-of-use assets and related lease liabilities associated predominantly with noncancelable operating leases. In addition, we do not expect the adoption of this guidance to have a material impact on our consolidated statements of income.

In June 2016, the FASB issued a new accounting standard update (ASU 2016-13, Financial Instruments- Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments), which amends the incurred loss impairment methodology in current GAAP with a methodology that reflects expected credit losses over the life of the loan and requires consideration of a broader range of reasonable and supportable information to inform credit loss estimates. This guidance will be effective January 1, 2020, on a modified retrospective approach, with early adoption permitted, but not before January 1, 2019. We currently have a project team in place and subject matter experts to assist with our review of key interpretive issues and the assessment of our existing credit loss forecasting models and processes against the new guidance to determine what modifications may be required. We are currently evaluating the impact this guidance will have on our financial position, results of operation and stockholders’ equity.

Adoption of New Accounting Standards

In May 2014, the FASB issued a new accounting standard update (ASU 2014-09, Revenue from Contracts with Customers (Topic 606)), which provides revenue recognition guidance that is intended to create greater consistency with respect to how and when revenue from contracts with customers is shown in the income statement. The guidance requires that revenue from contracts with customers be recognized when transfer of control over goods or services is passed to customers in the amount of consideration expected to be received. Subsequent Accounting Standard Updates have been issued clarifying the original pronouncement (ASU 2016-08, ASU 2016-10, ASU 2016-12 and ASU 2016-20).

On January 1, 2018, we adopted the new accounting standard ASU 2014-09, Revenue from Contracts with Customers and all the related amendments ("new revenue standard," "ASC 606" or "ASU 2014-09") using the modified retrospective method applied to those contracts which were not completed as of January 1, 2018. We elected to apply the practical expedient which allows us to expense costs related to obtaining contracts as incurred because the amortization period would have been one year or less. We recognized the cumulative effect of initially applying the new revenue standard as an adjustment to the opening balance of retained earnings. The comparative information has not been restated and continues to be reported under the accounting standards in effect for those periods.

We completed a comprehensive scoping exercise to determine the revenue streams that are within the scope of this guidance. The scope of this guidance explicitly excludes net interest income, including interest income earned from our loan and fixed income securities portfolios, as well as certain other noninterest income earned from our lending-, investment- and derivative-related activities. Based on our completed assessment, we did not identify any material changes to the timing or the amounts of our revenue recognition, however, we identified a change in the timing of recognizing fund management fees in other noninterest income for a portion of our SVB Capital funds. Fund management fees for these certain SVB Capital funds will now be recognized at the time of distribution which typically occurs later in the life of the fund than had been previously recognized. The cumulative adjustment to retained earnings associated with this change was $5.8 million, net of tax, with an immaterial impact to our net income on an ongoing basis. The impacts to net income as a result of applying the new revenue standard were decreases of $0.5 million and $1.4 million for the three and nine months endedSeptember 30, 2018, respectively.

The timing of revenue recognition may differ from the timing of cash settlements or invoicing to customers. We record a receivable when revenue is recognized prior to invoicing, and unearned revenue when revenue is recognized subsequent to receipt of consideration.These assets and liabilities are reported on the consolidated balance sheets on a contract-by-contract basis at the end of each reporting period. During the three and nine months endedSeptember 30, 2018, changes in our contract assets, contract liabilities and receivables were not material. Additionally, revenues recognized during the three and nine months endedSeptember 30, 2018 that were included in the corresponding contract liability balance at the beginning of the period were not material.

Reclassifications

Reclassifications

Certain prior period amounts, primarily related to the adoption of new accounting guidance, have been reclassified to conform to current period presentations.

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Basis of Presentation (Tables)

9 Months Ended

Sep. 30, 2018

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Schedule of Changes Due to Adoption of New Revenue Recognition Guidance

The cumulative effect of the changes to our consolidated balance sheets at January 1, 2018, for the adoption of the new revenue standard were as follows:

(Dollars in thousands)	Balance at December 31, 2017		Adjustments Due to Adoption of ASC 606			Balance at January 1, 2018
Accrued interest receivable and other assets:
Accounts receivable	$	55,946	$	(34,340	)	$	21,606
Other liabilities:
Deferred revenue	27,057		(26,321		)	736
Current taxes payable	4,675		(2,217		)	2,458
Stockholders' Equity:
Retained earnings	2,866,837		(5,802		)	2,861,035

In accordance with the new revenue standard requirements, the disclosure of the impact of adoption on our consolidated balance sheets at September 30, 2018 and our statements of income for the three and nine months endedSeptember 30, 2018, were as follows:

	September 30, 2018
(Dollars in thousands)	As Reported		Balances Without Adoption of ASC 606			Effect of Change Higher/(Lower)
Accrued interest receivable and other assets:
Accounts receivable	$	61,090	$	100,470		$	(39,380	)
Other liabilities:
Deferred fees	556		28,379			(27,823		)
Current taxes payable (receivable)	2,002		(694		)	2,696
Stockholders' Equity:
Retained earnings	3,672,696		3,678,020			(5,324		)

	Three months ended September 30, 2018
(Dollars in thousands)	As Reported		Balances Without Adoption of ASC 606		Effect of Change Higher/(Lower)
Other noninterest income:
Fund management fees	$	5,479	$	6,087	$	(608	)
Income tax expense	95,308		95,463		(155		)
Net Income available to common stockholders	274,817		275,270		(453		)
Diluted earnings per share	5.10		5.11		(0.01		)

	Nine months ended September 30, 2018
(Dollars in thousands)	As Reported		Balances Without Adoption of ASC 606		Effect of Change Higher/(Lower)
Other noninterest income:
Fund management fees	$	17,144	$	19,001	$	(1,857	)
Income tax expense	246,561		247,040		(479		)
Net Income available to common stockholders	707,576		708,954		(1,378		)
Diluted earnings per share	13.15		13.18		(0.03		)

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Stockholders' Equity and EPS (Tables)

9 Months Ended

Sep. 30, 2018

Equity and Earnings Per Share [Abstract]

Reclassifications out of AOCI

The following table summarizes the items reclassified out of accumulated other comprehensive income into the Consolidated Statements of Income (unaudited) for the three and nine months endedSeptember 30, 2018 and 2017:

		Three months ended September 30,					Nine months ended September 30,
(Dollars in thousands)	Income Statement Location	2018		2017			2018		2017
Reclassification adjustment for losses (gains) included in net income (1)	Gains on investment securities, net	$	—	$	101		$	—	$	(384	)
Related tax (benefit) expense (1)	Income tax expense	—		(41		)	—		157
Total reclassification adjustment for losses (gains) included in net income, net of tax (1)		$	—	$	60		$	—	$	(227	)

(1) See "Adoption of New Accounting Standards" in Note 1—“Basis of Presentation” of the “Notes to Interim Consolidated Financial Statements (unaudited)” under Part I, Item 1 of this report for additional details.

Reconciliation of Basic EPS to Diluted EPS

The following is a reconciliation of basic EPS to diluted EPS for the three and nine months endedSeptember 30, 2018 and 2017:

	Three months ended September 30,				Nine months ended September 30,
(Dollars and shares in thousands, except per share amounts)	2018		2017		2018		2017
Numerator:
Net income available to common stockholders	$	274,817	$	148,620	$	707,576	$	373,296
Denominator:
Weighted average common shares outstanding—basic	53,235		52,705		53,062		52,530
Weighted average effect of dilutive securities:
Stock options and ESPP	383		343		404		381
Restricted stock units	301		257		334		319
Weighted average common shares outstanding—diluted	53,919		53,305		53,800		53,230
Earnings per common share:
Basic	$	5.16	$	2.82	$	13.33	$	7.11
Diluted	5.10		2.79		13.15		7.01

Schedule of Antidilutive Securities Excluded from Computation of Earnings per Share

The following table summarizes the weighted-average common shares excluded from the diluted EPS calculation due to the antidilutive effect for the three and nine months endedSeptember 30, 2018 and 2017:

	Three months ended September 30,		Nine months ended September 30,
(Shares in thousands)	2018	2017	2018	2017
Stock options	86	112	49	61
Restricted stock units	5	5	71	2
Total	91	117	120	63

Schedule of Stockholders Equity

The following table summarizes the changes in our consolidated equity for the three months ended September 30, 2018 and 2017:

	Common Stock			Additional Paid-in Capital		Retained Earnings		Accumulated Other Comprehensive Income (Loss)			Total SVBFG Stockholders’ Equity			Noncontrolling Interests			Total Equity
(Dollars in thousands)	Shares	Amount
Balance at June 30, 2017	52,684,159	$	53	$	1,283,485	$	2,601,007	$	14,890		$	3,899,435		$	140,600		$	4,040,035
Common stock issued under employee benefit plans, net of restricted stock cancellations	39,495	—		2,370		—		—			2,370			—			2,370
Net income	—	—		—		148,620		—			148,620			5,498			154,118
Capital calls and distributions, net	—	—		—		—		—			—			(8,613		)	(8,613		)
Net change in unrealized gains and losses on AFS securities, net of tax	—	—		—		—		556			556			—			556
Amortization of unrealized holding gains on securities transferred from AFS to HTM, net of tax	—	—		—		—		(953		)	(953		)	—			(953		)
Foreign currency translation adjustments, net of tax	—	—		—		—		1,141			1,141			—			1,141
Share-based compensation, net	—	—		8,644		—		—			8,644			—			8,644
Balance at September 30, 2017	52,723,654	$	53	$	1,294,499	$	2,749,627	$	15,634		$	4,059,813		$	137,485		$	4,197,298
Balance at June 30, 2018	53,210,627	$	53	$	1,346,586	$	3,397,879	$	(86,865	)	$	4,657,653		$	147,188		$	4,804,841
Common stock issued under employee benefit plans, net of restricted stock cancellations	39,628	—		1,943		—		—			1,943			—			1,943
Net income	—	—		—		274,817		—			274,817			6,548			281,365
Capital calls and distributions, net	—	—		—		—		—			—			(8,060		)	(8,060		)
Net change in unrealized gains and losses on AFS securities, net of tax	—	—		—		—		(17,908		)	(17,908		)	—			(17,908		)
Amortization of unrealized holding gains on securities transferred from AFS to HTM, net of tax	—	—		—		—		(1,283		)	(1,283		)	—			(1,283		)
Foreign currency translation adjustments, net of tax	—	—		—		—		(2,354		)	(2,354		)	—			(2,354		)
Share-based compensation, net	—	—		11,501		—		—			11,501			—			11,501
Balance at September 30, 2018	53,250,255	$	53	$	1,360,030	$	3,672,696	$	(108,410	)	$	4,924,369		$	145,676		$	5,070,045

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Share-Based Compensation (Tables)

9 Months Ended

Sep. 30, 2018

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Share-based Compensation and Related Benefits

For the three and nine months endedSeptember 30, 2018 and 2017, we recorded share-based compensation and related tax benefits as follows:

	Three months ended September 30,						Nine months ended September 30,
(Dollars in thousands)	2018			2017			2018			2017
Share-based compensation expense	$	11,501		$	8,644		$	33,968		$	27,739
Income tax benefit related to share-based compensation expense	(2,895		)	(3,154		)	(7,955		)	(9,518		)

Unrecognized Share-based Compensation Expense

As of September 30, 2018, unrecognized share-based compensation expense was as follows:

(Dollars in thousands)	Unrecognized   Expense		Weighted Average Expected Recognition Period  - in Years
Stock options	$	13,525	2.91
Restricted stock units	73,037		2.74
Total unrecognized share-based compensation expense	$	86,562

Stock Option Information Related to Equity Incentive Plan

The table below provides stock option information related to the 2006 Equity Incentive Plan for the nine months endedSeptember 30, 2018:

	Options		Weighted Average  Exercise Price		Weighted Average Remaining Contractual Life - in Years	Aggregate   Intrinsic Value   of In-The- Money Options
Outstanding at December 31, 2017	808,049		$	105.68
Granted	89,616		305.71
Exercised	(191,585	)	83.37
Forfeited	(9,498	)	187.76
Expired	(2,337	)	60.37
Outstanding at September 30, 2018	694,245		136.68		3.76	$	120,932,288
Vested and expected to vest at September 30, 2018	673,674		134.25		3.70	118,982,041
Exercisable at September 30, 2018	415,993		99.63		2.66	87,856,349

Information for Restricted Stock Units under Equity Incentive Plan

The table below provides information for restricted stock units under the 2006 Equity Incentive Plan for the nine months endedSeptember 30, 2018:

	Shares		Weighted Average Grant Date Fair Value
Nonvested at December 31, 2017	637,667		$	135.86
Granted	193,405		302.53
Vested	(213,944	)	130.20
Forfeited	(37,080	)	170.97
Nonvested at September 30, 2018	580,048		191.28

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Variable Interest Entities (Tables)

9 Months Ended

Sep. 30, 2018

Investments In Variable Interest Entities [Abstract]

Schedule of Variable Interest Entities

The following table presents the carrying amounts and classification of significant variable interests in consolidated and unconsolidated VIEs as of September 30, 2018 and December 31, 2017:

(Dollars in thousands)	Consolidated VIEs		Unconsolidated VIEs		Maximum Exposure to Loss in Unconsolidated VIEs
September 30, 2018:
Assets:
Cash and cash equivalents	$	5,470	$	—	$	—
Non-marketable and other equity securities (1)	212,514		524,812		524,812
Accrued interest receivable and other assets	298		—		—
Total assets	$	218,282	$	524,812	$	524,812
Liabilities:
Other liabilities (1)	680		166,867		—
Total liabilities	$	680	$	166,867	$	—
December 31, 2017:
Assets:
Cash and cash equivalents	$	6,674	$	—	$	—
Non-marketable and other equity securities (1)	190,562		346,097		346,097
Accrued interest receivable and other assets	365		—		—
Total assets	$	197,601	$	346,097	$	346,097
Liabilities:
Other liabilities (1)	990		100,891		—
Total liabilities	$	990	$	100,891	$	—

(1) Included in our unconsolidated non-marketable and other equity securities portfolio at September 30, 2018 and December 31, 2017 are investments in qualified affordable housing projects of $261.7 million and $174.2 million, respectively, and related other liabilities consisting of unfunded credit commitments of $166.9 million and $100.9 million, respectively.

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Cash and Cash Equivalents (Tables)

9 Months Ended

Sep. 30, 2018

Cash and Cash Equivalents [Abstract]

Schedule of Cash and Cash Equivalents

The following table details our cash and cash equivalents at September 30, 2018 and December 31, 2017:

(Dollars in thousands)	September 30, 2018		December 31, 2017
Cash and due from banks (1)	$	3,697,018	$	2,672,290
Securities purchased under agreements to resell (2)	119,181		247,876
Other short-term investment securities	2,942		2,909
Total cash and cash equivalents	$	3,819,141	$	2,923,075

(1) At September 30, 2018 and December 31, 2017, $2.1 billion and $0.6 billion, respectively, of our cash and due from banks was deposited at the Federal Reserve Bank and was earning interest at the Federal Funds target rate, and interest-earning deposits in other financial institutions were $1.1 billion at both September 30, 2018 and December 31, 2017.

(2) At September 30, 2018 and December 31, 2017, securities purchased under agreements to resell were collateralized by U.S. Treasury securities and U.S. agency securities with aggregate fair values of$124.5 millionand $252.8 million, respectively. None of these securities were sold or repledged as of September 30, 2018 and December 31, 2017.

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Investment Securities (Tables)

9 Months Ended

Sep. 30, 2018

Investments, Debt and Equity Securities [Abstract]

Components of Available-for-Sale Securities Portfolio

The components of our available-for-sale investment securities portfolio at September 30, 2018 and December 31, 2017 are as follows:

	September 30, 2018
(Dollars in thousands)	Amortized Cost		Unrealized Gains		Unrealized Losses			Carrying Value
Available-for-sale securities, at fair value:
U.S. Treasury securities	$	5,560,828	$	117	$	(59,071	)	$	5,501,874
U.S. agency debentures	1,357,069		—		(10,397		)	1,346,672
Residential mortgage-backed securities:
Agency-issued collateralized mortgage obligations—fixed rate	2,001,048		3		(80,510		)	1,920,541
Agency-issued collateralized mortgage obligations—variable rate	317,356		1,297		(131		)	318,522
Total available-for-sale securities	$	9,236,301	$	1,417	$	(150,109	)	$	9,087,609

	December 31, 2017
(Dollars in thousands)	Amortized Cost		Unrealized Gains		Unrealized Losses			Carrying Value
Available-for-sale securities, at fair value:
U.S. Treasury securities	$	6,865,068	$	1,113	$	(25,679	)	$	6,840,502
U.S. agency debentures	1,569,195		3,569		(5,636		)	1,567,128
Residential mortgage-backed securities:
Agency-issued collateralized mortgage obligations—fixed rate	2,292,311		258		(25,534		)	2,267,035
Agency-issued collateralized mortgage obligations—variable rate	372,481		1,375		(126		)	373,730
Equity securities	31,953		40,525		(209		)	72,269
Total available-for-sale securities	$	11,131,008	$	46,840	$	(57,184	)	$	11,120,664

Activity of Available-for-Sale Securities

The following table summarizes sale activity of available-for-sale securities during the three and nine months endedSeptember 30, 2018 and 2017 as recorded in the line item “Gains on investment securities, net," a component of noninterest income:

	Three months ended September 30,					Nine months ended September 30,
(Dollars in thousands)	2018		2017			2018		2017
Sales proceeds	$	—	$	2,287		$	—	$	7,311
Net realized gains and losses:
Gross realized gains	—		38			—		1,131
Gross realized losses	—		(139		)	—		(747		)
Net realized (losses) gains	$	—	$	(101	)	$	—	$	384

Summary of Unrealized Losses on Available for Sale Securities

The following tables summarize our unrealized losses on our available-for-sale securities portfolio into categories of less than 12 months, or 12 months or longer as of September 30, 2018 and December 31, 2017:

	September 30, 2018
	Less than 12 months					12 months or longer					Total
(Dollars in thousands)	Fair Value of Investments		Unrealized Losses			Fair Value of Investments		Unrealized Losses			Fair Value of Investments		Unrealized Losses
Available-for-sale securities:
U.S. Treasury securities	$	3,915,282	$	(46,503	)	$	1,438,839	$	(12,568	)	$	5,354,121	$	(59,071	)
U.S. agency debentures	838,609		(4,615		)	508,062		(5,782		)	1,346,671		(10,397		)
Residential mortgage-backed securities:
Agency-issued collateralized mortgage obligations—fixed rate	812,726		(30,350		)	1,103,803		(50,160		)	1,916,529		(80,510		)
Agency-issued collateralized mortgage obligations—variable rate	14,076		(5		)	49,729		(126		)	63,805		(131		)
Total temporarily impaired securities (1)	$	5,580,693	$	(81,473	)	$	3,100,433	$	(68,636	)	$	8,681,126	$	(150,109	)

(1) As of September 30, 2018, we identified a total of 265 investments that were in unrealized loss positions, of which 109 investments totaling $3.1 billion with unrealized losses of $68.6 million have been in an impaired position for a period of time greater than 12 months. As of September 30, 2018, we do not intend to sell any of our impaired securities prior to recovery of our adjusted cost basis, and it is more likely than not that we will not be required to sell any of our securities prior to recovery of our adjusted cost basis. Based on our analysis as of September 30, 2018, we deem all impairments to be temporary, and therefore changes in value for our temporarily impaired securities as of the same date are included in other comprehensive income. Market valuations and impairment analyses on assets in the available-for-sale securities portfolio are reviewed and monitored on a quarterly basis.

	December 31, 2017
	Less than 12 months					12 months or longer					Total
(Dollars in thousands)	Fair Value of Investments		Unrealized Losses			Fair Value of Investments		Unrealized Losses			Fair Value of Investments		Unrealized Losses
Available-for-sale securities:
U.S. Treasury securities	$	5,968,914	$	(23,397	)	$	323,966	$	(2,282	)	$	6,292,880	$	(25,679	)
U.S. agency debentures	736,541		(2,289		)	336,196		(3,347		)	1,072,737		(5,636		)
Residential mortgage-backed securities:
Agency-issued collateralized mortgage obligations—fixed rate	2,193,277		(25,534		)	—		—			2,193,277		(25,534		)
Agency-issued collateralized mortgage obligations—variable rate	13,843		(3		)	53,186		(123		)	67,029		(126		)
Equity securities	624		(209		)	—		—			624		(209		)
Total temporarily impaired securities (1)	$	8,913,199	$	(51,432	)	$	713,348	$	(5,752	)	$	9,626,547	$	(57,184	)

(1) As of December 31, 2017, we identified a total of 268 investments that were in unrealized loss positions, of which 46 investments totaling $713.3 million with unrealized losses of $5.8 million have been in an impaired position for a period of time greater than 12 months.

Summary of Remaining Contractual Principal Maturities and Fully Taxable Equivalent Yields on Securities

The following table summarizes the fixed income securities, carried at fair value, classified as available-for-sale as of September 30, 2018 by the remaining contractual principal maturities. For U.S. Treasury securities and U.S. agency debentures, the expected maturity is the actual contractual maturity of the notes. Expected maturities for mortgage-backed securities may differ significantly from their contractual maturities because mortgage borrowers have the right to prepay outstanding loan obligations with or without penalties. Mortgage-backed securities classified as available-for-sale typically have original contractual maturities from 10 to 30 years whereas expected average lives of these securities tend to be significantly shorter and vary based upon structure and prepayments in lower interest rate environments.

	September 30, 2018
(Dollars in thousands)	Total		One Year or Less		After One Year to Five Years		After Five Years to Ten Years		After Ten Years
U.S. Treasury securities	$	5,501,874	$	2,016,438	$	3,047,620	$	437,816	$	—
U.S. agency debentures	1,346,672		653,271		693,401		—		—
Residential mortgage-backed securities:
Agency-issued collateralized mortgage obligations—fixed rate	1,920,541		—		—		29,113		1,891,428
Agency-issued collateralized mortgage obligations—variable rate	318,522		—		—		—		318,522
Total	$	9,087,609	$	2,669,709	$	3,741,021	$	466,929	$	2,209,950

The following table summarizes the remaining contractual principal maturities on fixed income investment securities classified as held-to-maturity as of September 30, 2018. For U.S. agency debentures, the expected maturity is the actual contractual maturity of the notes. Expected maturities for mortgage-backed securities may differ significantly from their contractual maturities because mortgage borrowers have the right to prepay outstanding loan obligations with or without penalties. Mortgage-backed securities classified as held-to-maturity typically have original contractual maturities from 10 to 30 years whereas expected average lives of these securities tend to be significantly shorter and vary based upon structure and prepayments in lower interest rate environments.

	September 30, 2018
	Total				One Year or Less				After One Year to Five Years				After Five Years to Ten Years				After Ten Years
(Dollars in thousands)	Amortized Cost		Fair Value		Amortized Cost		Fair Value		Amortized Cost		Fair Value		Amortized Cost		Fair Value		Amortized Cost		Fair Value
U.S. agency debentures	$	641,134	$	622,737	$	—	$	—	$	104,550	$	102,498	$	536,584	$	520,239	$	—	$	—
Residential mortgage-backed securities:
Agency-issued mortgage-backed securities	8,333,088		8,056,342		—		—		179,847		174,664		859,233		821,883		7,294,008		7,059,795
Agency-issued collateralized mortgage obligations—fixed rate	2,329,065		2,230,506		—		—		—		—		474,668		452,428		1,854,397		1,778,078
Agency-issued collateralized mortgage obligations—variable rate	223,374		224,009		—		—		—		—		—		—		223,374		224,009
Agency-issued commercial mortgage-backed securities	2,795,952		2,717,264		—		—		—		—		—		—		2,795,952		2,717,264
Municipal bonds and notes	1,577,113		1,521,380		8,376		8,373		74,518		73,331		256,453		245,277		1,237,766		1,194,399
Total	$	15,899,726	$	15,372,238	$	8,376	$	8,373	$	358,915	$	350,493	$	2,126,938	$	2,039,827	$	13,405,497	$	12,973,545

Held-to-maturity Securities

The components of our held-to-maturity investment securities portfolio at September 30, 2018 and December 31, 2017 are as follows:

	September 30, 2018
(Dollars in thousands)	Amortized Cost		Unrealized Gains		Unrealized Losses			Fair Value
Held-to-maturity securities, at cost:
U.S. agency debentures (1)	$	641,134	$	85	$	(18,482	)	$	622,737
Residential mortgage-backed securities:
Agency-issued mortgage-backed securities	8,333,088		2		(276,748		)	8,056,342
Agency-issued collateralized mortgage obligations—fixed rate	2,329,065		—		(98,559		)	2,230,506
Agency-issued collateralized mortgage obligations—variable rate	223,374		667		(32		)	224,009
Agency-issued commercial mortgage-backed securities	2,795,952		—		(78,688		)	2,717,264
Municipal bonds and notes	1,577,113		161		(55,894		)	1,521,380
Total held-to-maturity securities	$	15,899,726	$	915	$	(528,403	)	$	15,372,238

(1) Consists of pools of Small Business Investment Company debentures issued and guaranteed by the U.S. Small Business Administration, an independent agency of the United States.

	December 31, 2017
(Dollars in thousands)	Amortized Cost		Unrealized Gains		Unrealized Losses			Fair Value
Held-to-maturity securities, at cost:
U.S. agency debentures (1)	$	659,979	$	3,167	$	(1,601	)	$	661,545
Residential mortgage-backed securities:
Agency-issued mortgage-backed securities	6,304,969		4,854		(43,528		)	6,266,295
Agency-issued collateralized mortgage obligations—fixed rate	2,829,979		23		(54,372		)	2,775,630
Agency-issued collateralized mortgage obligations—variable rate	255,782		733		(34		)	256,481
Agency-issued commercial mortgage-backed securities	1,868,985		694		(25,563		)	1,844,116
Municipal bonds and notes	743,761		3,452		(3,000		)	744,213
Total held-to-maturity securities	$	12,663,455	$	12,923	$	(128,098	)	$	12,548,280

(1) Consists of pools of Small Business Investment Company debentures issued and guaranteed by the U.S. Small Business Administration, an independent agency of the United States.

The following tables summarize our unrealized losses on our held-to-maturity securities portfolio into categories of less than 12 months and 12 months or longer as of September 30, 2018 and December 31, 2017:

	September 30, 2018
	Less than 12 months					12 months or longer					Total
(Dollars in thousands)	Fair Value of Investments		Unrealized Losses			Fair Value of Investments		Unrealized Losses			Fair Value of Investments		Unrealized Losses
Held-to-maturity securities:
U.S. agency debentures	$	549,916	$	(14,744	)	$	61,635	$	(3,738	)	$	611,551	$	(18,482	)
Residential mortgage-backed securities:
Agency-issued mortgage-backed securities	5,514,402		(155,580		)	2,541,848		(121,168		)	8,056,250		(276,748		)
Agency-issued collateralized mortgage obligations—fixed rate	77,011		(2,285		)	2,153,494		(96,274		)	2,230,505		(98,559		)
Agency-issued collateralized mortgage obligations—variable rate	3,504		(1		)	8,445		(31		)	11,949		(32		)
Agency-issued commercial mortgage-backed securities	1,595,146		(30,149		)	1,122,118		(48,539		)	2,717,264		(78,688		)
Municipal bonds and notes	1,429,117		(51,806		)	83,486		(4,088		)	1,512,603		(55,894		)
Total temporarily impaired securities (1)	$	9,169,096	$	(254,565	)	$	5,971,026	$	(273,838	)	$	15,140,122	$	(528,403	)

(1) As of September 30, 2018, we identified a total of 1,433 investments that were in unrealized loss positions, of which 454 investments totaling $6.0 billion with unrealized losses of $273.8 million have been in an impaired position for a period of time greater than 12 months. As of September 30, 2018, we do not intend to sell any of our impaired securities prior to recovery of our adjusted cost basis, and it is more likely than not that we will not be required to sell any of our securities prior to recovery of our adjusted cost basis, which is consistent with our classification of these securities. Based on our analysis as of September 30, 2018, we deem all impairments to be temporary. Market valuations and impairment analyses on assets in the held-to-maturity securities portfolio are reviewed and monitored on a quarterly basis.

	December 31, 2017
	Less than 12 months					12 months or longer					Total
(Dollars in thousands)	Fair Value of Investments		Unrealized Losses			Fair Value of Investments		Unrealized Losses			Fair Value of Investments		Unrealized Losses
Held-to-maturity securities:
U.S. agency debentures	$	104,688	$	(1,601	)	$	—	$	—		$	104,688	$	(1,601	)
Residential mortgage-backed securities:
Agency-issued mortgage-backed securities	4,270,377		(34,092		)	408,913		(9,436		)	4,679,290		(43,528		)
Agency-issued collateralized mortgage obligations—fixed rate	1,011,709		(13,631		)	1,741,614		(40,741		)	2,753,323		(54,372		)
Agency-issued collateralized mortgage obligations—variable rate	—		—			9,812		(34		)	9,812		(34		)
Agency-issued commercial mortgage-backed securities	979,361		(11,566		)	773,712		(13,997		)	1,753,073		(25,563		)
Municipal bonds and notes	344,796		(2,103		)	32,844		(897		)	377,640		(3,000		)
Total temporarily impaired securities (1)	$	6,710,931	$	(62,993	)	$	2,966,895	$	(65,105	)	$	9,677,826	$	(128,098	)

(1) As of December 31, 2017, we identified a total of 753 investments that were in unrealized loss positions, of which 237 investments totaling $3.0 billion with unrealized losses of $65.1 million have been in an impaired position for a period of time greater than 12 months.

Schedule of Nonmarketable and Other Securities

The components of our non-marketable and other equity securities portfolio at September 30, 2018 and December 31, 2017 are as follows:

(Dollars in thousands)	September 30, 2018		December 31, 2017
Non-marketable and other equity securities:
Non-marketable securities (fair value accounting):
Consolidated venture capital and private equity fund investments (1)	$	126,467	$	128,111
Unconsolidated venture capital and private equity fund investments (2)	208,953		98,548
Other investments without a readily determinable fair value (3)	25,253		27,680
Other equity securities in public companies (fair value accounting) (4)	30,460		310
Non-marketable securities (equity method accounting) (5):
Venture capital and private equity fund investments	112,537		89,809
Debt funds	5,241		21,183
Other investments	125,632		111,198
Investments in qualified affordable housing projects, net (6)	261,706		174,214
Total non-marketable and other equity securities	$	896,249	$	651,053

(1) The following table shows the amounts of venture capital and private equity fund investments held by the following consolidated funds and our ownership percentage of each fund at September 30, 2018 and December 31, 2017 (fair value accounting):

	September 30, 2018				December 31, 2017
(Dollars in thousands)	Amount		Ownership %		Amount		Ownership %
Strategic Investors Fund, LP	$	12,733	12.6	%	$	14,673	12.6	%
Capital Preferred Return Fund, LP	56,453		20.0		54,147		20.0
Growth Partners, LP	56,280		33.0		58,372		33.0
CP I, LP	1,001		10.7		919		10.7
Total consolidated venture capital and private equity fund investments	$	126,467			$	128,111

(2) The carrying value represents investments in 220 and 235 funds (primarily venture capital funds) at September 30, 2018 and December 31, 2017, respectively, where our ownership interest is typically less than 5% of the voting interests of each such fund and in which we do not have the ability to exercise significant influence over the partnerships operating activities and financial policies. Effective January 1, 2018, we adopted ASU 2016-01, Recognition and Measurement of Financial Assets and Financial Liabilities which eliminated the concept of cost method accounting. On a prospective basis, we will carry our unconsolidated venture capital and private equity fund investments at fair value based on the fund investments' net asset values per share as obtained from the general partners of the investments. For each fund investment, we adjust the net asset value per share for differences between our measurement date and the date of the fund investment’s net asset value by using the most recently available financial information from the investee general partner, for example June 30^th, for our September 30^th consolidated financial statements, adjusted for any contributions paid, distributions received from the investment, and significant fund transactions or market events during the reporting period. We recorded a cumulative adjustment to opening retained earnings on January 1, 2018 for the difference between fair value and cost for these fund investments. The estimated fair value and carrying value of these venture capital and private equity fund investments was $209.0 million as of September 30, 2018. As of December 31, 2017, these investments were carried at cost and had a carrying value of $98.5 million.

(3) Effective January 1, 2018, we adopted ASU 2016-01, Recognition and Measurement of Financial Assets and Financial Liabilities which eliminated the concept of cost method accounting. On a prospective basis, we will report our other investments in the line item "Other investments without a readily determinable fair value". These investments include direct equity investments in private companies. The carrying value is based on the price at which the investment was acquired plus or minus changes resulting from observable price changes in orderly transactions for identical or similar investments. We consider a range of factors when adjusting the fair value of these investments, including, but not limited to, the term and nature of the investment, local market conditions, values for comparable securities, current and projected operating performance, exit strategies, financing transactions subsequent to the acquisition of the investment and a discount for certain investments that have lock-up restrictions or other features that indicate a discount to fair value is warranted. The following table shows the changes to the carrying amount of other investments without a readily determinable fair value for the nine months endedSeptember 30, 2018:

(Dollars in thousands)	Nine months ended September 30, 2018
Carrying value as of January 1, 2018	$	27,680
Upward carrying value adjustments	4,854
Downward carrying value adjustments	(1,729		)
Additions	3,870
Sales and dispositions	(9,422		)
Carrying value as of September 30, 2018	$	25,253

(4) Investments classified as other equity securities (fair value accounting) represent shares held in public companies as a result of exercising public equity warrant assets and direct equity investments in public companies held by our consolidated funds. Effective January 1, 2018 we adopted ASU 2016-01 Recognition and Measurement of Financial Assets and Financial Liabilities which requires equity securities to be measured at fair value with changes in the fair value recognized through net income. Prior to January 1, 2018 we reported equity securities in public companies that we held as a result of exercising public equity warrant assets in available-for-sale securities. On a prospective basis, these equity securities will be reported in non-marketable and other equity securities.

(5) The following table shows the carrying value and our ownership percentage of each investment at September 30, 2018 and December 31, 2017 (equity method accounting):

	September 30, 2018				December 31, 2017
(Dollars in thousands)	Amount		Ownership %		Amount		Ownership %
Venture capital and private equity fund investments:
Strategic Investors Fund II, LP	$	4,739	8.6	%	$	6,342	8.6	%
Strategic Investors Fund III, LP	18,176		5.9		18,758		5.9
Strategic Investors Fund IV, LP	29,445		5.0		25,551		5.0
Strategic Investors Fund V funds	24,245		Various		16,856		Various
CP II, LP (i)	6,865		5.1		6,700		5.1
Other venture capital and private equity fund investments	29,067		Various		15,602		Various
Total venture capital and private equity fund investments	$	112,537			$	89,809
Debt funds:
Gold Hill Capital 2008, LP (ii)	$	3,267	15.5	%	$	18,690	15.5	%
Other debt funds	1,974		Various		2,493		Various
Total debt funds	$	5,241			$	21,183
Other investments:
SPD Silicon Valley Bank Co., Ltd.	$	75,314	50.0	%	$	75,337	50.0	%
Other investments	50,318		Various		35,861		Various
Total other investments	$	125,632			$	111,198

(i) Our ownership includes direct ownership interest of 1.3 percent and indirect ownership interest of 3.8 percent through our investments in Strategic Investors Fund II, LP.

(ii) Our ownership includes direct ownership interest of 11.5 percent in the fund and an indirect interest in the fund through our investment in Gold Hill Capital 2008, LLC of 4.0 percent.

Schedule Of Investments In Qualified Affordable Housing Projects And Related Unfunded Commitments

The following table presents the balances of our investments in qualified affordable housing projects and related unfunded commitments included as a component of “other liabilities” on our consolidated balance sheets at September 30, 2018 and December 31, 2017:

(Dollars in thousands)	September 30, 2018		December 31, 2017
Investments in qualified affordable housing projects, net	$	261,706	$	174,214
Other liabilities	166,867		100,891

The following table presents other information relating to our investments in qualified affordable housing projects for the three and nine months endedSeptember 30, 2018 and 2017:

	Three months ended September 30,				Nine months ended September 30,
(Dollars in thousands)	2018		2017		2018		2017
Tax credits and other tax benefits recognized	$	6,283	$	4,539	$	16,912	$	13,199
Amortization expense included in provision for income    taxes (i)	4,773		3,533		14,269		10,154

(i) All investments are amortized using the proportional amortization method and amortization expense is included in the provision for income taxes.

Gain Loss On Investment Securities

The following table presents the net gains on non-marketable and other equity securities for the three and nine months endedSeptember 30, 2018 and 2017 as recorded in the line item “Gains on investment securities, net," a component of noninterest income:

	Three months ended September 30,					Nine months ended September 30,
(Dollars in thousands)	2018		2017			2018			2017
Net gains on non-marketable and other equity securities:
Non-marketable securities (fair value accounting):
Consolidated venture capital and private equity fund investments	$	2,928	$	4,473		$	18,971		$	20,649
Unconsolidated venture capital and private equity fund investments (1)	6,240		4,697			37,095			13,928
Other investments without a readily determinable fair value (1)	2,509		(49		)	4,310			3,354
Other equity securities in public companies (fair value accounting) (1)	4,407		387			(17,786		)	280
Non-marketable securities (equity method accounting):
Venture capital and private equity fund investments	11,341		4,319			30,122			10,710
Debt funds	1,473		2,445			(100		)	2,696
Other investments	3,295		(933		)	4,753			(3,163		)
Total net gains on non-marketable and other equity securities	$	32,193	$	15,339		$	77,365		$	48,454
Less: Net gains (losses) on non-marketable and other equity securities sold	357		(49		)	(20,806		)	3,355
Unrealized net gains on non-marketable and other equity securities still held	$	31,836	$	15,388		$	98,171		$	45,099

(1) Prior period amounts are not determined in a manner consistent with the current period presentation due to the adoption of accounting standard update (ASU 2016-01, Recognition and Measurement of Financial Assets and Financial Liabilities (Topic 825)).

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Loans, Allowance for Loan Losses and Allowance for Unfunded Credit Commitments (Tables)

9 Months Ended

Sep. 30, 2018

Receivables [Abstract]

Loans and Allowance for Loan Losses

The composition of loans, net of unearned income of $174 million and $148 million at September 30, 2018 and December 31, 2017, respectively, is presented in the following table:

(Dollars in thousands)	September 30, 2018		December 31, 2017
Commercial loans:
Software/internet	$	6,258,724	$	6,172,531
Hardware	1,306,709		1,193,599
Private equity/venture capital	13,360,511		9,952,377
Life science/healthcare	2,302,453		1,808,827
Premium wine	227,498		204,105
Other	256,413		365,724
Total commercial loans	23,712,308		19,697,163
Real estate secured loans:
Premium wine (1)	685,941		669,053
Consumer loans (2)	2,556,906		2,300,506
Other	40,879		42,068
Total real estate secured loans	3,283,726		3,011,627
Construction loans	81,163		68,546
Consumer loans	417,718		328,980
Total loans, net of unearned income (3)	$	27,494,915	$	23,106,316

(1) Included in our premium wine portfolio are gross construction loans of $92 million and $100 million at September 30, 2018 and December 31, 2017, respectively.

(2) Consumer loans secured by real estate at September 30, 2018 and December 31, 2017 were comprised of the following:

(Dollars in thousands)	September 30, 2018		December 31, 2017
Loans for personal residence	$	2,196,948	$	1,995,840
Loans to eligible employees	285,186		243,118
Home equity lines of credit	74,772		61,548
Consumer loans secured by real estate	$	2,556,906	$	2,300,506

(3) Included within our total loan portfolio are credit card loans of $342 million and $270 million at September 30, 2018 and December 31, 2017, respectively.

Composition of Loans, Net of Unearned Income, Broken Out by Portfolio Segment and Class of Financing Receivable

The composition of loans, net of unearned income of $174 million and $148 million at September 30, 2018 and December 31, 2017, respectively, broken out by portfolio segment and class of financing receivable, is as follows:

(Dollars in thousands)	September 30, 2018		December 31, 2017
Commercial loans:
Software/internet	$	6,258,724	$	6,172,531
Hardware	1,306,709		1,193,599
Private equity/venture capital	13,360,511		9,952,377
Life science/healthcare	2,302,453		1,808,827
Premium wine	913,439		873,158
Other	378,455		476,338
Total commercial loans	24,520,291		20,476,830
Consumer loans:
Real estate secured loans	2,556,906		2,300,506
Other consumer loans	417,718		328,980
Total consumer loans	2,974,624		2,629,486
Total loans, net of unearned income	$	27,494,915	$	23,106,316

Aging of Gross Loans, Broken out by Portfolio Segment and Class of Financing Receivable

The following table summarizes the aging of our gross loans, broken out by portfolio segment and class of financing receivable as of September 30, 2018 and December 31, 2017:

(Dollars in thousands)	30 - 59   Days Past   Due		60 - 89   Days Past   Due		Equal to or Greater Than 90   Days Past   Due		Total Past   Due		Current		Loans Past Due   90 Days or More Still Accruing Interest
September 30, 2018:
Commercial loans:
Software/internet	$	17,067	$	4,842	$	116	$	22,025	$	6,175,651	$	116
Hardware	491		99		—		590		1,298,215		—
Private equity/venture capital	7,556		—		2		7,558		13,357,777		2
Life science/healthcare	9,620		897		45		10,562		2,330,483		45
Premium wine	1,594		—		—		1,594		910,356		—
Other	340		27		—		367		400,547		—
Total commercial loans	36,668		5,865		163		42,696		24,473,029		163
Consumer loans:
Real estate secured loans	8,389		—		—		8,389		2,540,950		—
Other consumer loans	2,111		—		—		2,111		415,582		—
Total consumer loans	10,500		—		—		10,500		2,956,532		—
Total gross loans excluding impaired loans	47,168		5,865		163		53,196		27,429,561		163
Impaired loans	2,345		970		29,197		32,512		153,560		—
Total gross loans	$	49,513	$	6,835	$	29,360	$	85,708	$	27,583,121	$	163
December 31, 2017:
Commercial loans:
Software/internet	$	14,257	$	6,526	$	141	$	20,924	$	6,101,147	$	141
Hardware	1,145		77		50		1,272		1,163,278		50
Private equity/venture capital	86,566		38,580		—		125,146		9,835,317		—
Life science/healthcare	4,390		191		—		4,581		1,841,692		—
Premium wine	418		—		—		418		871,074		—
Other	445		—		—		445		490,292		—
Total commercial loans	107,221		45,374		191		152,786		20,302,800		191
Consumer loans:
Real estate secured loans	2,164		532		—		2,696		2,292,980		—
Other consumer loans	796		—		—		796		327,234		—
Total consumer loans	2,960		532		—		3,492		2,620,214		—
Total gross loans excluding impaired loans	110,181		45,906		191		156,278		22,923,014		191
Impaired loans	1,344		11,902		30,403		43,649		131,212		—
Total gross loans	$	111,525	$	57,808	$	30,594	$	199,927	$	23,054,226	$	191

Impaired Loans and Allowance for Loan Losses, Broken out by Portfolio Segment and Class of Financing Receivable

The following table summarizes our impaired loans as they relate to our allowance for loan losses, broken out by portfolio segment and class of financing receivable as of September 30, 2018 and December 31, 2017:

(Dollars in thousands)	Impaired loans for   which there is a related allowance for loan losses		Impaired loans for   which there is no related allowance for loan losses		Total carrying value of impaired loans		Total unpaid principal of impaired loans
September 30, 2018:
Commercial loans:
Software/internet	$	64,197	$	55,442	$	119,639	$	145,122
Hardware	2,431		17,249		19,680		31,804
Private equity/venture capital	—		3,700		3,700		3,700
Life science/healthcare	22,300		14,125		36,425		44,065
Premium wine	306		2,010		2,316		2,375
Other	—		—		—		—
Total commercial loans	89,234		92,526		181,760		227,066
Consumer loans:
Real estate secured loans	3,990		322		4,312		5,996
Other consumer loans	—		—		—		—
Total consumer loans	3,990		322		4,312		5,996
Total	$	93,224	$	92,848	$	186,072	$	233,062
December 31, 2017:
Commercial loans:
Software/internet	$	49,645	$	61,009	$	110,654	$	129,006
Hardware	15,637		20,713		36,350		41,721
Private equity/venture capital	658		—		658		984
Life science/healthcare	20,521		1,166		21,687		26,360
Premium wine	—		2,877		2,877		2,911
Other	32		—		32		165
Total commercial loans	86,493		85,765		172,258		201,147
Consumer loans:
Real estate secured loans	1,331		850		2,181		3,712
Other consumer loans	422		—		422		436
Total consumer loans	1,753		850		2,603		4,148
Total	$	88,246	$	86,615	$	174,861	$	205,295

Average Impaired Loans, Broken out by Portfolio Segment and Class of Financing Receivable

The following tables summarize our average impaired loans and interest income recognized on impaired loans, broken out by portfolio segment and class of financing receivable for the three and nine months endedSeptember 30, 2018 and 2017:

Three months ended September 30,	Average impaired loans				Interest income recognized on impaired loans
(Dollars in thousands)	2018		2017		2018		2017
Commercial loans:
Software/internet	$	118,840	$	121,290	$	607	$	767
Hardware	27,922		35,932		410		419
Private equity/venture capital	1,233		644		—		3
Life science/healthcare	38,545		25,796		365		21
Premium wine	2,384		3,625		35		39
Other	—		348		—		—
Total commercial loans	188,924		187,635		1,417		1,249
Consumer loans:
Real estate secured loans	4,330		1,306		4		24
Other consumer loans	—		1,966		—		—
Total consumer loans	4,330		3,272		4		24
Total average impaired loans	$	193,254	$	190,907	$	1,421	$	1,273

Nine months ended September 30,	Average impaired loans				Interest income recognized on impaired loans
(Dollars in thousands)	2018		2017		2018		2017
Commercial loans:
Software/internet	$	112,576	$	122,527	$	991	$	1,646
Hardware	34,469		33,271		499		518
Private equity/venture capital	536		443		—		8
Life science/healthcare	27,671		33,590		376		60
Premium wine	2,586		3,353		103		115
Other	130		706		—		—
Total commercial loans	177,968		193,890		1,969		2,347
Consumer loans:
Real estate secured loans	3,953		1,385		12		24
Other consumer loans	477		1,931		—		—
Total consumer loans	4,430		3,316		12		24
Total average impaired loans	$	182,398	$	197,206	$	1,981	$	2,371

Activity in Allowance for Loan Losses Broken out by Portfolio Segment

The following tables summarize the activity relating to our allowance for loan losses for the three and nine months endedSeptember 30, 2018 and 2017, broken out by portfolio segment:

Three months ended September 30, 2018	Beginning Balance June 30, 2018		Charge-offs			Recoveries		Provision for (Reduction of) Loan Losses			Foreign Currency Translation Adjustments			Ending Balance September 30, 2018
(Dollars in thousands)
Commercial loans:
Software/internet	$	102,648	$	(6,304	)	$	841	$	16,640		$	(335	)	$	113,490
Hardware	34,695		(12,697		)	227		(1,763		)	36			20,498
Private equity/venture capital	89,409		—			3		1,632			(33		)	91,011
Life science/healthcare	35,064		(2,076		)	189		2,322			(47		)	35,452
Premium wine	3,438		—			—		125			(3		)	3,560
Other	2,896		(1,128		)	771		118			(2		)	2,655
Total commercial loans	268,150		(22,205		)	2,031		19,074			(384		)	266,666
Total consumer loans	18,559		—			133		362			(7		)	19,047
Total allowance for loan losses	$	286,709	$	(22,205	)	$	2,164	$	19,436		$	(391	)	$	285,713

Three months ended September 30, 2017	Beginning Balance June 30, 2017		Charge-offs			Recoveries		Provision for (Reduction of) Loan Losses			Foreign Currency Translation Adjustments			Ending Balance September 30, 2017
(Dollars in thousands)
Commercial loans:
Software/internet	$	92,937	$	(8,791	)	$	426	$	7,241		$	199		$	92,012
Hardware	27,800		(2,453		)	115		5,681			156			31,299
Private equity/venture capital	66,785		—			—		10,142			279			77,206
Life science/healthcare	27,730		(1,083		)	63		(1,621		)	(45		)	25,044
Premium wine	3,133		—			—		362			10			3,505
Other	4,135		—			947		(931		)	(26		)	4,125
Total commercial loans	222,520		(12,327		)	1,551		20,874			573			233,191
Total consumer loans	13,976		(11		)	277		1,535			42			15,819
Total allowance for loan losses	$	236,496	$	(12,338	)	$	1,828	$	22,409		$	615		$	249,010

Nine months ended September 30, 2018	Beginning Balance December 31, 2017		Charge-offs			Recoveries		Provision for (Reduction of) Loan Losses			Foreign Currency Translation Adjustments			Ending Balance September 30, 2018
(Dollars in thousands)
Commercial loans:
Software/internet	$	96,104	$	(26,377	)	$	1,818	$	42,620		$	(675	)	$	113,490
Hardware	27,614		(16,111		)	1,458		7,788			(251		)	20,498
Private equity/venture capital	82,468		(112		)	13		8,200			442			91,011
Life science/healthcare	24,924		(2,940		)	245		13,829			(606		)	35,452
Premium wine	3,532		—			—		42			(14		)	3,560
Other	3,941		(2,391		)	1,874		(775		)	6			2,655
Total commercial loans	238,583		(47,931		)	5,408		71,704			(1,098		)	266,666
Total consumer loans	16,441		(289		)	470		2,384			41			19,047
Total allowance for loan losses	$	255,024	$	(48,220	)	$	5,878	$	74,088		$	(1,057	)	$	285,713

Nine months ended September 30, 2017	Beginning Balance December 31, 2016		Charge-offs			Recoveries		Provision for (Reduction of) Loan Losses			Foreign Currency Translation Adjustments			Ending Balance September 30, 2017
(Dollars in thousands)
Commercial loans:
Software/internet	$	97,388	$	(36,172	)	$	2,833	$	27,487		$	476		$	92,012
Hardware	31,166		(6,726		)	459		6,075			325			31,299
Private equity/venture capital	50,299		—			—		26,111			796			77,206
Life science/healthcare	25,446		(7,493		)	107		6,906			78			25,044
Premium wine	4,115		—			—		(567		)	(43		)	3,505
Other	4,768		(1,047		)	1,424		(1,005		)	(15		)	4,125
Total commercial loans	213,182		(51,438		)	4,823		65,007			1,617			233,191
Total consumer loans	12,184		(11		)	1,332		2,266			48			15,819
Total allowance for loan losses	$	225,366	$	(51,449	)	$	6,155	$	67,273		$	1,665		$	249,010

The following table summarizes the activity relating to our allowance for unfunded credit commitments for the three and nine months endedSeptember 30, 2018 and 2017:

	Three months ended September 30,					Nine months ended September 30,
(Dollars in thousands)	2018			2017		2018			2017
Allowance for unfunded credit commitments, beginning balance	$	54,104		$	47,000	$	51,770		$	45,265
(Reduction of) provision for unfunded credit commitments	(2,262		)	1,113		138			2,789
Foreign currency translation adjustments	(34		)	59		(100		)	118
Allowance for unfunded credit commitments, ending balance (1)	$	51,808		$	48,172	$	51,808		$	48,172

(1) See Note 13—“Off-Balance Sheet Arrangements, Guarantees and Other Commitments” of the “Notes to Interim Consolidated Financial Statements (unaudited)” under Part I, Item 1 of this report for additional disclosures related to our commitments to extend credit.

Allowance for Loan Losses Individually and Collectively Evaluated for Impairment

The following table summarizes the allowance for loan losses individually and collectively evaluated for impairment as of September 30, 2018 and December 31, 2017, broken out by portfolio segment:

	September 30, 2018								December 31, 2017
	Individually Evaluated for   Impairment				Collectively Evaluated for   Impairment				Individually Evaluated for   Impairment				Collectively Evaluated for   Impairment
(Dollars in thousands)	Allowance for loan losses		Recorded investment in loans		Allowance for loan losses		Recorded investment in loans		Allowance for loan losses		Recorded investment in loans		Allowance for loan losses		Recorded investment in loans
Commercial loans:
Software/internet	$	36,856	$	119,639	$	76,634	$	6,139,085	$	23,088	$	110,654	$	73,016	$	6,061,877
Hardware	764		19,680		19,734		1,287,029		8,450		36,350		19,164		1,157,249
Private equity/venture capital	—		3,700		91,011		13,356,811		330		658		82,138		9,951,719
Life science/healthcare	11,951		36,425		23,501		2,266,028		9,315		21,687		15,609		1,787,140
Premium wine	3		2,316		3,557		911,123		—		2,877		3,532		870,281
Other	—		—		2,655		378,455		32		32		3,909		476,306
Total commercial loans	49,574		181,760		217,092		24,338,531		41,215		172,258		197,368		20,304,572
Total consumer loans	418		4,312		18,629		2,970,312		578		2,603		15,863		2,626,883
Total	$	49,992	$	186,072	$	235,721	$	27,308,843	$	41,793	$	174,861	$	213,231	$	22,931,455

Credit Quality Indicators, Broken out by Portfolio Segment and Class of Financing Receivables

The following table summarizes the credit quality indicators, broken out by portfolio segment and class of financing receivables as of September 30, 2018 and December 31, 2017:

(Dollars in thousands)	Pass		Performing (Criticized)		Performing Impaired (Criticized)		Nonperforming Impaired (Nonaccrual)		Total
September 30, 2018:
Commercial loans:
Software/internet	$	5,613,023	$	584,653	$	37,204	$	82,435	$	6,317,315
Hardware	1,245,532		53,273		17,249		2,431		1,318,485
Private equity/venture capital	13,362,294		3,041		—		3,700		13,369,035
Life science/healthcare	2,172,679		168,366		14,125		22,300		2,377,470
Premium wine	862,311		49,639		2,010		306		914,266
Other	398,263		2,651		—		—		400,914
Total commercial loans	23,654,102		861,623		70,588		111,172		24,697,485
Consumer loans:
Real estate secured loans	2,529,708		19,631		322		3,990		2,553,651
Other consumer loans	417,344		349		—		—		417,693
Total consumer loans	2,947,052		19,980		322		3,990		2,971,344
Total gross loans	$	26,601,154	$	881,603	$	70,910	$	115,162	$	27,668,829
December 31, 2017:
Commercial loans:
Software/internet	$	5,655,739	$	466,332	$	31,794	$	78,860	$	6,232,725
Hardware	1,112,574		51,976		20,165		16,185		1,200,900
Private equity/venture capital	9,955,082		5,381		—		658		9,961,121
Life science/healthcare	1,720,613		125,660		1,167		20,520		1,867,960
Premium wine	834,537		36,955		2,476		401		874,369
Other	469,721		21,016		—		32		490,769
Total commercial loans	19,748,266		707,320		55,602		116,656		20,627,844
Consumer loans:
Real estate secured loans	2,282,375		13,301		—		2,181		2,297,857
Other consumer loans	326,851		1,179		—		422		328,452
Total consumer loans	2,609,226		14,480		—		2,603		2,626,309
Total gross loans	$	22,357,492	$	721,800	$	55,602	$	119,259	$	23,254,153

Summary of Loans Modified in Troubled Debt Restructurings ("TDRs") by Portfolio Segment and Class of Financing Receivables

The following table summarizes our loans modified in TDRs, broken out by portfolio segment and class of financing receivables at September 30, 2018 and December 31, 2017:

(Dollars in thousands)	September 30, 2018		December 31, 2017
Loans modified in TDRs:
Commercial loans:
Software/internet	$	49,078	$	73,455
Hardware	12,499		51,132
Private equity/venture capital	—		350
Life science/healthcare	20,942		19,235
Premium wine	2,964		3,198
Total commercial loans	85,483		147,370
Consumer loans:
Other consumer loans	322		423
Total	$	85,805	$	147,793

Recorded Investment in Loans Modified in TDRs

The following table summarizes the recorded investment in loans modified in TDRs, broken out by portfolio segment and class of financing receivable, for modifications made during the three and nine months endedSeptember 30, 2018 and 2017:

	Three months ended September 30,				Nine months ended September 30,
(Dollars in thousands)	2018		2017		2018		2017
Loans modified in TDRs during the period:
Commercial loans:
Software/internet	$	—	$	10,876	$	14,069	$	26,034
Hardware	10,398		396		12,347		396
Life science/healthcare	—		—		5,909		—
Premium wine	—		—		—		185
Total commercial loans	10,398		11,272		32,325		26,615
Consumer loans:
Other consumer loans	—		—		322		—
Total loans modified in TDRs during the period (1)	$	10,398	$	11,272	$	32,647	$	26,615

(1) There were $13.0 million and $21.5 million of partial charge-offs for the three and nine months endedSeptember 30, 2018, respectively, and zero and $2.6 million of partial charge-offs during the three and nine months endedSeptember 30, 2017, respectively.

Troubled Debt Restructurings On Financing Receivables Subsequently Defaulted Table

The following table summarizes the recorded investment in loans modified in TDRs within the previous 12 months that subsequently defaulted during the three and nine months endedSeptember 30, 2018 and 2017:

	Three months ended September 30,				Nine months ended September 30,
(Dollars in thousands)	2018		2017		2018		2017
TDRs modified within the previous 12 months that defaulted during the period:
Commercial loans:
Software/internet	$	18,911	$	1,234	$	41,568	$	1,234
Hardware	2,100		—		5,549		—
Life science/healthcare	5,909		—		7,139		—
Premium wine	—		186		—		186
Total TDRs modified within the previous 12 months that defaulted in the period	$	26,920	$	1,420	$	54,256	$	1,420

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Short-Term Borrowings and Long-Term Debt (Tables)

9 Months Ended

Sep. 30, 2018

Debt Disclosure [Abstract]

Outstanding Short Term Borrowings and Long Term Debt

The following table represents outstanding short-term borrowings and long-term debt at September 30, 2018 and December 31, 2017:

				Carrying Value
(Dollars in thousands)	Maturity	Principal value at September 30, 2018		September 30, 2018		December 31, 2017
Short-term borrowings:
Short-term FHLB advances	(1)	$	2,250,000	$	2,250,000	$	700,000
Federal funds purchased		—		—		330,000
Securities sold under agreement to repurchase	(2)	371,539		371,539		—
Other short-term borrowings	(3)	9,713		9,713		3,730
Total short-term borrowings				$	2,631,252	$	1,033,730
Long-term debt:
3.50% Senior Notes	January 29, 2025	$	350,000	$	347,554	$	347,303
5.375% Senior Notes	September 15, 2020	350,000		348,663		348,189
Total long-term debt				$	696,217	$	695,492

(1) Represents advances from the FHLB at September 30, 2018 with maturity dates through November 26, 2018.

(2) Securities sold under repurchase agreements are effectively short-term collateralized borrowings. Gross repurchase agreements held at September 30, 2018 have maturity dates through October 17, 2018.

(3) Represents cash collateral received from certain counterparties in relation to market value exposures of derivative contracts in our favor.

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Derivative Financial Instruments (Tables)

9 Months Ended

Sep. 30, 2018

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Total Notional or Contractual Amounts, Fair Value, Collateral and Net Exposure of Derivative Financial Instruments

The total notional or contractual amounts and fair value of our derivative financial instruments at September 30, 2018 and December 31, 2017 were as follows:

	September 30, 2018						December 31, 2017
	Notional or Contractual Amount		Fair Value				Notional or Contractual Amount		Fair Value
(Dollars in thousands)			Derivative Assets (1)		Derivative Liabilities (1)				Derivative Assets (1)		Derivative Liabilities (1)
Derivatives not designated as hedging instruments:
Currency exchange risks:
Foreign exchange forwards	$	241,360	$	2,842	$	—	$	50,889	$	414	$	—
Foreign exchange forwards	397,153		—		4,370		425,055		—		5,201
Other derivative instruments:
Equity warrant assets	223,868		146,967		—		211,253		123,763		—
Client foreign exchange forwards	2,523,524		77,585		—		2,203,643		95,035		—
Client foreign exchange forwards	2,390,294		—		70,317		2,092,207		—		90,253
Client foreign currency options	91,125		1,476		—		102,678		1,187		—
Client foreign currency options	91,149		—		1,478		102,678		—		1,187
Client interest rate derivatives (2)	937,808		6,262		—		726,984		11,753		—
Client interest rate derivatives	1,335,830		—		15,156		782,586		—		11,940
Total Derivatives not designated as hedging instruments			$	235,132	$	91,321			$	232,152	$	108,581

(1) Derivative assets and liabilities are included in "accrued interest receivable and other assets" and "other liabilities", respectively, on our consolidated balance sheets.

(2) The amount reported for September 30, 2018 reflects rule changes implemented by two central clearing houses that allow entities to elect to treat derivative assets, liabilities and the related variation margin as settlement of the related derivative fair values for legal and accounting purposes, as opposed to presenting gross derivative assets and liabilities. As a result, client interest rate derivatives at September 30, 2018, reflect reductions of approximately $8.7 million of derivative assets that previously would have been reported on a gross basis and approximately $302.4 million in related notional amounts for these derivative assets cleared through central clearing houses.

Summary of Derivative Activity and Related Impact on Consolidated Statements of Income

A summary of our derivative activity and the related impact on our consolidated statements of income for the three and nine months endedSeptember 30, 2018 and 2017 is as follows:

		Three months ended September 30,						Nine months ended September 30,
(Dollars in thousands)	Statement of income location	2018			2017			2018			2017
Derivatives designated as hedging instruments:
Interest rate risks:
Net cash benefit associated with interest rate swaps	Interest expense—borrowings	$	—		$	62		$	—		$	997
Changes in fair value of interest rate swaps	Other noninterest income	—			—			—			(7		)
Net gains associated with interest rate risk derivatives		$	—		$	62		$	—		$	990
Derivatives not designated as hedging instruments:
Currency exchange risks:
Gains on revaluations of internal foreign currency instruments, net	Other noninterest income	$	5,412		$	10,561		$	8,019		$	29,265
(Losses) on internal foreign exchange forward contracts, net	Other noninterest income	(5,002		)	(10,550		)	(8,055		)	(28,349		)
Net gains (losses) associated with internal currency risk		$	410		$	11		$	(36	)	$	916
Other derivative instruments:
(Losses) gains on revaluations of client foreign currency instruments, net	Other noninterest income	$	(1,187	)	$	3,760		$	3,718		$	8,889
Gains (losses) on client foreign exchange forward contracts, net	Other noninterest income	1,573			(3,871		)	(2,697		)	(8,350		)
Net gains (losses) associated with client currency risk		$	386		$	(111	)	$	1,021		$	539
Net gains on equity warrant assets	Gains on equity warrant assets, net	$	34,141		$	24,922		$	72,393		$	42,432
Net gains (losses) on other derivatives	Other noninterest income	$	222		$	(38	)	$	643		$	(524	)

Offsetting Assets

The following table summarizes our assets subject to enforceable master netting arrangements as of September 30, 2018 and December 31, 2017:

	Gross Amounts of Recognized Assets		Gross Amounts offset in the Statement of Financial Position		Net Amounts of Assets Presented in the Statement of Financial Position		Gross Amounts Not Offset in the Statement of Financial Position But Subject to Master Netting Arrangements						Net Amount
(Dollars in thousands)							Financial Instruments			Cash Collateral Received (1)
September 30, 2018
Derivative Assets:
Foreign exchange forwards	$	80,427	$	—	$	80,427	$	(29,400	)	$	(6,816	)	$	44,211
Foreign currency options	1,476		—		1,476		(811		)	—			665
Client interest rate derivatives	6,262		—		6,262		(3,365		)	(2,897		)	—
Total derivative assets	88,165		—		88,165		(33,576		)	(9,713		)	44,876
Reverse repurchase, securities borrowing, and similar arrangements	119,181		—		119,181		(119,181		)	—			—
Total	$	207,346	$	—	$	207,346	$	(152,757	)	$	(9,713	)	$	44,876
December 31, 2017
Derivative Assets:
Foreign exchange forwards (2)	$	95,449	$	—	$	95,449	$	(14,570	)	$	(3,616	)	$	77,263
Foreign currency options	1,187		—		1,187		(557		)	—			630
Client interest rate derivatives (2)	11,753		—		11,753		(11,627		)	(114		)	12
Total derivative assets	108,389		—		108,389		(26,754		)	(3,730		)	77,905
Reverse repurchase, securities borrowing, and similar arrangements	247,876		—		247,876		(247,876		)	—			—
Total	$	356,265	$	—	$	356,265	$	(274,630	)	$	(3,730	)	$	77,905

(1) Cash collateral received from our counterparties in relation to market value exposures of derivative contracts in our favor is recorded as a component of “short-term borrowings” on our consolidated balance sheets.

(2) For the period ending December 31, 2017, previously reported amounts for our foreign exchange forwards and client interest rate derivatives were reclassified between "Financial Instruments" and "Cash Collateral Received" to properly reflect cash collateral received for these derivative assets subject to master netting arrangements, respectively. The

Offsetting Liabilities

The following table summarizes our liabilities subject to enforceable master netting arrangements as of September 30, 2018 and December 31, 2017:

	Gross Amounts of Recognized Liabilities		Gross Amounts offset in the Statement of Financial Position		Net Amounts of Liabilities Presented in the Statement of Financial Position		Gross Amounts Not Offset in the Statement of Financial Position But Subject to Master Netting Arrangements						Net Amount
(Dollars in thousands)							Financial Instruments			Cash Collateral Pledged (1)
September 30, 2018
Derivative Liabilities:
Foreign exchange forwards	$	74,687	$	—	$	74,687	$	(22,038	)	$	(20,036	)	$	32,613
Foreign currency options	1,478		—		1,478		(666		)	—			812
Client interest rate derivatives	15,156		—		15,156		(4,882		)	(10,180		)	94
Total derivative liabilities	91,321		—		91,321		(27,586		)	(30,216		)	33,519
Repurchase, securities lending, and similar arrangements	371,539		—		371,539		(147,757		)	(750		)	223,032
Total	$	462,860	$	—	$	462,860	$	(175,343	)	$	(30,966	)	$	256,551
December 31, 2017
Derivative Liabilities:
Foreign exchange forwards (2)	$	95,454	$	—	$	95,454	$	(10,997	)	$	(69,110	)	$	15,347
Foreign currency options (2)	1,187		—		1,187		(501		)	(130		)	556
Client interest rate derivatives (2)	11,940		—		11,940		—			(11,924		)	16
Total derivative liabilities (2)	108,581		—		108,581		(11,498		)	(81,164		)	15,919
Repurchase, securities lending, and similar arrangements	—		—		—		—			—			—
Total (2)	$	108,581	$	—	$	108,581	$	(11,498	)	$	(81,164	)	$	15,919

(1) Cash collateral pledged to our counterparties in relation to market value exposures of derivative contracts in a liability position and repurchase agreements are recorded as a component of “cash and cash equivalents" on our consolidated balance sheets.

(2) For the period ending December 31, 2017, previously reported amounts included in "Financial Instruments" were reclassified to "Cash Collateral Pledged" to properly reflect cash collateral pledged for these derivative liabilities subject to master netting arrangements. The correction of this immaterial error had no impact on the "Net Amount" of derivative liabilities subject to enforceable master netting arrangements.

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Noninterest Income (Tables)

9 Months Ended

Sep. 30, 2018

Other Income and Expenses [Abstract]

Summary of Noninterest Income

A summary of noninterest income for the three and nine months endedSeptember 30, 2018 and 2017 is as follows:

	Three months ended September 30,				Nine months ended September 30,
(Dollars in thousands)	2018		2017		2018		2017
Noninterest income:
Gains on investment securities, net	$	32,193	$	15,238	$	77,365	$	48,838
Gains on equity warrant assets, net	34,141		24,922		72,393		42,432
Foreign exchange fees	32,656		29,671		100,560		82,026
Credit card fees	24,121		20,270		68,739		56,099
Deposit service charges	19,588		14,508		56,081		43,046
Client investment fees	36,265		15,563		88,592		37,571
Lending related fees	10,675		15,404		30,938		32,874
Letters of credit and standby letters of credit fees	8,409		7,306		24,938		20,951
Other	12,022		15,896		38,671		41,128
Total noninterest income	$	210,070	$	158,778	$	558,277	$	404,965

Components of Gains and Losses (Realized and Unrealized) on Investment Securities

A summary of gains and losses on investment securities for the three and nine months endedSeptember 30, 2018 and 2017 is as follows:

	Three months ended September 30,					Nine months ended September 30,
(Dollars in thousands)	2018		2017			2018		2017
Gains on non-marketable and other equity securities, net	$	32,193	$	15,339		$	77,365	$	48,454
(Losses) gains on sales of available-for-sale securities, net	—		(101		)	—		384
Total gains on investment securities, net	$	32,193	$	15,238		$	77,365	$	48,838

Components of Gains on Equity Warrant Assets

A summary of net gains on equity warrant assets for the three and nine months endedSeptember 30, 2018 and 2017 is as follows:

	Three months ended September 30,						Nine months ended September 30,
(Dollars in thousands)	2018			2017			2018			2017
Equity warrant assets:
Gains on exercises, net	$	18,287		$	7,449		$	42,808		$	22,482
Cancellations and expirations	(1,432		)	(757		)	(3,158		)	(3,614		)
Changes in fair value, net	17,286			18,230			32,743			23,564
Total net gains on equity warrant assets	$	34,141		$	24,922		$	72,393		$	42,432

Components of Foreign Exchange Fees

A summary of foreign exchange fee income by instrument type for the three and nine months endedSeptember 30, 2018 and 2017 is as follows:

	Three months ended September 30,				Nine months ended September 30,
(Dollars in thousands)	2018		2017		2018		2017
Foreign exchange fees by instrument type:
Spot contract commissions	$	30,041	$	27,700	$	92,791	$	73,707
Forward contract commissions	2,534		1,877		7,474		7,948
Option premium fees	81		94		295		371
Total foreign exchange fees	$	32,656	$	29,671	$	100,560	$	82,026

Components of Credit Card Fees

A summary of credit card fees by instrument type for the three and nine months endedSeptember 30, 2018 and 2017 is as follows:

	Three months ended September 30,				Nine months ended September 30,
(Dollars in thousands)	2018		2017		2018		2017
Credit card fees by instrument type:
Card interchange fees, net	$	18,849	$	16,179	$	54,547	$	44,182
Merchant service fees	3,679		2,930		10,010		8,553
Card service fees	1,593		1,161		4,182		3,364
Total credit card fees	$	24,121	$	20,270	$	68,739	$	56,099

Components of Asset Management Fees

A summary of client investment fees by instrument type for the three and nine months endedSeptember 30, 2018 and 2017, is as follows:

	Three months ended September 30,				Nine months ended September 30,
(Dollars in thousands)	2018		2017		2018		2017
Client investment fees by type:
Sweep money market fees	$	21,105	$	7,968	$	50,605	$	18,838
Asset management fees (1)	6,358		4,177		17,447		11,666
Repurchase agreement fees	8,802		3,418		20,540		7,067
Total client investment fees (2)	$	36,265	$	15,563	$	88,592	$	37,571

(1) Represents fees earned from investments in third-party money market mutual funds and fixed-income securities managed by SVB Asset Management.

(2) Represents fees earned on client investment funds which are maintained at third-party financial institutions and are not recorded on our balance sheet.

Components of Lending Related Fees

A summary of lending related fees by instrument type for the three and nine months endedSeptember 30, 2018 and 2017 is as follows:

	Three months ended September 30,				Nine months ended September 30,
(Dollars in thousands)	2018		2017		2018		2017
Lending related fees by instrument type:
Unused commitment fees	$	8,410	$	12,334	$	24,994	$	25,923
Other	2,265		3,070		5,944		6,951
Total lending related fees	$	10,675	$	15,404	$	30,938	$	32,874

Summary of Other Noninterest Income

A summary of other noninterest income by instrument type for the three and nine months endedSeptember 30, 2018 and 2017 is as follows:

	Three months ended September 30,					Nine months ended September 30,
(Dollars in thousands)	2018		2017			2018		2017
Other noninterest income by instrument type:
Fund management fees	$	5,479	$	5,198		$	17,144	$	15,903
Net gains (losses) on revaluation of foreign currency instruments, net of foreign exchange forward contracts(1)	796		(100		)	985		1,455
Other service revenue	5,747		10,798			20,542		23,770
Total other noninterest income	$	12,022	$	15,896		$	38,671	$	41,128

(1) Represents the net revaluation of client and internal foreign currency denominated financial instruments. We enter into foreign exchange forward contracts to economically reduce our foreign exchange exposure related to client and internal foreign currency denominated financial instruments.

Disaggregation of Revenue

The following tables present our revenues from contracts with customers disaggregated by revenue source and segment for the three and nine months endedSeptember 30, 2018:

Three months ended September 30, 2018 (Dollars in thousands)	Global Commercial Bank		SVB Private   Bank			SVB Capital		Other Income		Total
Revenue from contracts with customers:
Spot contract commissions	$	29,776	$	184		$	—	$	81	$	30,041
Card interchange fees, gross	33,905		—			—		108		34,013
Merchant service fees	3,677		2			—		—		3,679
Deposit service charges	19,207		24			—		357		19,588
Client investment fees	14,740		420			—		21,105		36,265
Fund management fees	—		—			5,479		—		5,479
Correspondent bank rebates	1,372		—			—		—		1,372
Total revenue from contracts with customers	$	102,677	$	630		$	5,479	$	21,651	$	130,437
Revenues outside the scope of ASC 606 (1)	11,446		(25		)	18,944		49,268		79,633
Total noninterest income	$	114,123	$	605		$	24,423	$	70,919	$	210,070

(1) Amounts are accounted for under separate guidance than ASC 606.

Nine months ended September 30, 2018 (Dollars in thousands)	Global Commercial Bank		SVB Private   Bank			SVB Capital		Other Income		Total
Revenue from contracts with customers:
Spot contract commissions	$	92,098	$	507		$	—	$	186	$	92,791
Card interchange fees, gross	95,088		—			—		311		95,399
Merchant service fees	10,008		2			—		—		10,010
Deposit service charges	54,633		83			—		1,365		56,081
Client investment fees	36,885		1,101			—		50,606		88,592
Fund management fees	—		—			17,144		—		17,144
Correspondent bank rebates	4,241		—			—		—		4,241
Total revenue from contracts with customers	$	292,953	$	1,693		$	17,144	$	52,468	$	364,258
Revenues outside the scope of ASC 606 (1)	33,761		(16		)	64,688		95,586		194,019
Total noninterest income	$	326,714	$	1,677		$	81,832	$	148,054	$	558,277

(1) Amounts are accounted for under separate guidance than ASC 606.

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Other Noninterest Expense (Tables)

9 Months Ended

Sep. 30, 2018

Other Income and Expenses [Abstract]

Summary of Other Noninterest Expense

A summary of other noninterest expense for the three and nine months endedSeptember 30, 2018 and 2017 is as follows:

	Three months ended September 30,				Nine months ended September 30,
(Dollars in thousands)	2018		2017		2018		2017
Lending and other client related processing costs	$	5,698	$	6,935	$	16,301	$	18,806
Data processing services	2,740		2,244		7,934		7,254
Telephone	2,269		2,518		7,025		7,892
Dues and publications	1,387		883		3,081		2,355
Postage and supplies	652		612		2,133		2,013
Other	5,393		4,872		15,171		16,350
Total other noninterest expense	$	18,139	$	18,064	$	51,645	$	54,670

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Segment Reporting (Tables)

9 Months Ended

Sep. 30, 2018

Segment Reporting [Abstract]

Segment Reporting

Our segment information for the three and nine months endedSeptember 30, 2018 and 2017 is as follows:

(Dollars in thousands)	Global Commercial Bank (1)			SVB Private   Bank			SVB Capital (1)			Other Items (2)			Total
Three months ended September 30, 2018
Net interest income	$	431,036		$	14,919		$	6		$	47,261		$	493,222
(Provision for) reduction of credit losses	(19,074		)	(362		)	—			2,262			(17,174		)
Noninterest income	114,123			605			24,423			70,919			210,070
Noninterest expense (3)	(206,487		)	(6,760		)	(6,469		)	(89,729		)	(309,445		)
Income before income tax expense (4)	$	319,598		$	8,402		$	17,960		$	30,713		$	376,673
Total average loans, net of unearned income	$	22,925,909		$	2,928,576		$	—		$	476,892		$	26,331,377
Total average assets (5)	54,296,808			2,538,662			388,531			(758,964		)	56,465,037
Total average deposits	47,037,693			1,505,746			—			548,801			49,092,240
Three months ended September 30, 2017
Net interest income	$	337,860		$	14,600		$	15		$	21,499		$	373,974
Provision for credit losses	(20,874		)	(1,535		)	—			(1,113		)	(23,522		)
Noninterest income	97,227			460			13,913			47,178			158,778
Noninterest expense (3)	(178,306		)	(4,706		)	(4,873		)	(69,876		)	(257,761		)
Income (loss) before income tax expense (4)	$	235,907		$	8,819		$	9,055		$	(2,312	)	$	251,469
Total average loans, net of unearned income	$	18,807,616		$	2,499,507		$	—		$	277,769		$	21,584,892
Total average assets (5)	47,809,890			2,538,400			323,417			(876,341		)	49,795,366
Total average deposits	42,376,024			1,231,390			—			435,428			44,042,842
Nine months ended September 30, 2018
Net interest income	$	1,209,960		$	46,811		$	22		$	122,735		$	1,379,528
Provision for credit losses	(71,704		)	(2,384		)	—			(138		)	(74,226		)
Noninterest income	326,714			1,677			81,832			148,054			558,277
Noninterest expense (3)	(591,434		)	(18,729		)	(17,182		)	(253,256		)	(880,601		)
Income before income tax expense (4)	$	873,536		$	27,375		$	64,672		$	17,395		$	982,978
Total average loans, net of unearned income	$	21,781,557		$	2,791,910		$	—		$	434,810		$	25,008,277
Total average assets (5)	52,277,701			2,548,184			379,809			(773,042		)	54,432,652
Total average deposits	45,701,317			1,519,200			—			513,845			47,734,362
Nine months ended September 30, 2017
Net interest income	$	924,789		$	42,952		$	41		$	58,881		$	1,026,663
Provision for credit losses	(65,007		)	(2,266		)	—			(2,789		)	(70,062		)
Noninterest income	260,650			1,715			45,707			96,893			404,965
Noninterest expense (3)	(528,807		)	(12,675		)	(14,537		)	(190,621		)	(746,640		)
Income (loss) before income tax expense (4)	$	591,625		$	29,726		$	31,211		$	(37,636	)	$	614,926
Total average loans, net of unearned income	$	18,125,020		$	2,371,027		$	—		$	230,420		$	20,726,467
Total average assets (5)	45,408,476			2,403,777			333,439			(580,641		)	47,565,051
Total average deposits	40,398,413			1,289,990			—			373,232			42,061,635

(1) Global Commercial Bank’s and SVB Capital’s components of net interest income, noninterest income, noninterest expense and total average assets are shown net of noncontrolling interests for all periods presented. Noncontrolling interest is included within “Other Items."

(2) The “Other Items” column reflects the adjustments necessary to reconcile the results of the operating segments to the consolidated financial statements prepared in conformity with GAAP. Net interest income consists primarily of interest earned from our fixed income investment portfolio, net of FTP. Noninterest income consists primarily of gains on equity warrant assets and gains or losses on the sale of fixed income investments and equity securities from exercised warrant assets. Noninterest expense consists primarily of expenses associated with corporate support functions such as finance, human resources, marketing, legal and other expenses.

(3) The Global Commercial Bank segment includes direct depreciation and amortization of $5.5 million and $6.1 million for the three months ended September 30, 2018 and 2017, respectively, and $16.6 million and $19.4 million for the nine months endedSeptember 30, 2018 and 2017, respectively.

(4) The internal reporting model used by management to assess segment performance does not calculate income tax expense by segment. Our effective tax rate is a reasonable approximation of the segment rates.

(5) Total average assets equal the greater of total average assets or the sum of total average liabilities and total average stockholders’ equity for each segment to reconcile the results to the consolidated financial statements prepared in conformity with GAAP.

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Off-Balance Sheet Arrangements, Guarantees and Other Commitments (Tables)

9 Months Ended

Sep. 30, 2018

Disclosure Off Balance Sheet Arrangements Guarantees And Other Commitments Additional Information [Abstract]

Summary Information Related to Commitments to Extend Credit (Excluding Letters of Credit)

The following table summarizes information related to our commitments to extend credit at September 30, 2018 and December 31, 2017:

(Dollars in thousands)	September 30, 2018		December 31, 2017
Loan commitments available for funding: (1)
Fixed interest rate commitments	$	1,768,904	$	1,478,157
Variable interest rate commitments	14,698,357		14,034,169
Total loan commitments available for funding	16,467,261		15,512,326
Commercial and standby letters of credit (2)	2,072,253		1,950,211
Total unfunded credit commitments	$	18,539,514	$	17,462,537
Commitments unavailable for funding (3)	$	2,458,846	$	2,117,057
Allowance for unfunded credit commitments (4)	51,808		51,770

(1) Represents commitments which are available for funding, due to clients meeting all collateral, compliance and financial covenants required under loan commitment agreements.

(2) See below for additional information on our commercial and standby letters of credit.

(3) Represents commitments which are currently unavailable for funding, due to clients failing to meet all collateral, compliance and financial covenants under loan commitment agreements.

(4) Our allowance for unfunded credit commitments includes an allowance for both our unfunded loan commitments and our letters of credit.

Summary of Commercial and Standby Letters of Credit

The table below summarizes our commercial and standby letters of credit at September 30, 2018. The maximum potential amount of future payments represents the amount that could be remitted under letters of credit if there were a total default by the guaranteed parties, without consideration of possible recoveries under recourse provisions or from the collateral held or pledged.

(Dollars in thousands)	Expires In One Year or Less		Expires After One Year		Total Amount Outstanding		Maximum Amount of Future Payments
Financial standby letters of credit	$	1,906,562	$	41,565	$	1,948,127	$	1,948,127
Performance standby letters of credit	84,402		15,666		100,068		100,068
Commercial letters of credit	23,707		351		24,058		24,058
Total	$	2,014,671	$	57,582	$	2,072,253	$	2,072,253

Total Capital Commitments, Unfunded Capital Commitments, and Ownership in Each Fund

The following table details our total capital commitments, unfunded capital commitments, and our ownership percentage in each fund at September 30, 2018:

(Dollars in thousands)	SVBFG Capital Commitments		SVBFG Unfunded     Commitments		SVBFG Ownership   of each Fund (3)
CP I, LP	$	6,000	$	270	10.7	%
CP II, LP (1)	1,200		162		5.1
Shanghai Yangpu Venture Capital Fund (LP)	844		—		6.8
Strategic Investors Fund, LP	15,300		688		12.6
Strategic Investors Fund II, LP	15,000		1,050		8.6
Strategic Investors Fund III, LP	15,000		1,275		5.9
Strategic Investors Fund IV, LP	12,239		2,325		5.0
Strategic Investors Fund V funds	515		131		Various
Capital Preferred Return Fund, LP	12,688		—		20.0
Growth Partners, LP	24,670		1,340		33.0
Debt funds (equity method accounting)	48,443		—		Various
Other fund investments (2)	298,168		8,366		Various
Total	$	450,067	$	15,607

(1) Our ownership includes direct ownership of 1.3 percent and indirect ownership interest of 3.8 percent through our investment in Strategic Investors Fund II, LP.

(2) Represents commitments to 223 funds (primarily venture capital funds) where our ownership interest is generally less than five percent of the voting interests of each such fund.

(3) We are subject to the Volcker Rule, which restricts or limits us from sponsoring or having ownership interests in “covered” funds including venture capital and private equity funds. See “Business - Supervision and Regulation” under Part 1, Item 1 of our 2017 Form 10-K.

Remaining Unfunded Commitments to Venture Capital or Private Equity Funds by Consolidated Managed Funds

The following table details the amounts of remaining unfunded commitments to venture capital and private equity funds by our consolidated managed funds of funds (including our interest and the noncontrolling interests) at September 30, 2018:

(Dollars in thousands)	Unfunded Commitments
Strategic Investors Fund, LP	$	1,338
Capital Preferred Return Fund, LP	2,658
Growth Partners, LP	1,779
Total	$	5,775

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Fair Value of Financial Instruments (Tables)

9 Months Ended

Sep. 30, 2018

Fair Value Disclosures [Abstract]

Fair Value Hierarchy Tables Present Information about Assets and Liabilities Measured at Fair Value on a Recurring Basis

The following fair value hierarchy table presents information about our assets and liabilities that are measured at fair value on a recurring basis as of September 30, 2018:

(Dollars in thousands)	Level 1		Level 2		Level 3		Balance at September 30, 2018
Assets:
Available-for-sale securities:
U.S. Treasury securities	$	5,501,874	$	—	$	—	$	5,501,874
U.S. agency debentures	—		1,346,672		—		1,346,672
Residential mortgage-backed securities:
Agency-issued collateralized mortgage obligations—fixed rate	—		1,920,541		—		1,920,541
Agency-issued collateralized mortgage obligations—variable rate	—		318,522		—		318,522
Total available-for-sale securities	5,501,874		3,585,735		—		9,087,609
Non-marketable and other equity securities (fair value accounting):
Non-marketable securities:
Venture capital and private equity fund investments measured at net asset value	—		—		—		334,419
Venture capital and private equity fund investments not measured at net asset value (1)	—		—		1,001		1,001
Other equity securities in public companies	2,184		28,276		—		30,460
Total non-marketable and other equity securities (fair value accounting)	2,184		28,276		1,001		365,880
Other assets:
Foreign exchange forward and option contracts	—		81,903		—		81,903
Equity warrant assets	—		6,478		140,489		146,967
Client interest rate derivatives	—		6,262		—		6,262
Total assets	$	5,504,058	$	3,708,654	$	141,490	$	9,688,621
Liabilities:
Foreign exchange forward and option contracts	$	—	$	76,165	$	—	$	76,165
Client interest rate derivatives	—		15,156		—		15,156
Total liabilities	$	—	$	91,321	$	—	$	91,321

(1) Included in Level 3 assets is $0.9 million attributable to noncontrolling interests calculated based on the ownership percentages of the noncontrolling interests.

The following fair value hierarchy table presents information about our assets and liabilities that are measured at fair value on a recurring basis as of December 31, 2017:

(Dollars in thousands)	Level 1		Level 2		Level 3		Balance at December 31, 2017
Assets:
Available-for-sale securities:
U.S. Treasury securities	$	6,840,502	$	—	$	—	$	6,840,502
U.S. agency debentures	—		1,567,128		—		1,567,128
Residential mortgage-backed securities:
Agency-issued collateralized mortgage obligations—fixed rate	—		2,267,035		—		2,267,035
Agency-issued collateralized mortgage obligations—variable rate	—		373,730		—		373,730
Equity securities	158		72,111		—		72,269
Total available-for-sale securities	6,840,660		4,280,004		—		11,120,664
Non-marketable and other equity securities (fair value accounting):
Non-marketable securities:
Venture capital and private equity fund investments measured at net asset value	—		—		—		127,192
Venture capital and private equity fund investments not measured at net asset value (1)	—		—		919		919
Other equity securities in public companies (1)	310		—		—		310
Total non-marketable and other equity securities (fair value accounting)	310		—		919		128,421
Other assets:
Foreign exchange forward and option contracts	—		96,636		—		96,636
Equity warrant assets	—		2,432		121,331		123,763
Client interest rate derivatives	—		11,753		—		11,753
Total assets	$	6,840,970	$	4,390,825	$	122,250	$	11,481,237
Liabilities:
Foreign exchange forward and option contracts	$	—	$	96,641	$	—	$	96,641
Client interest rate derivatives	—		11,940		—		11,940
Total liabilities	$	—	$	108,581	$	—	$	108,581

(1) Included in Level 1 and Level 3 assets are $0.2 million and $0.8 million, respectively, attributable to noncontrolling interests calculated based on the ownership percentages of the noncontrolling interests.

Additional Information about Level 3 Assets Measured at Fair Value on a Recurring Basis

The following table presents additional information about Level 3 assets measured at fair value on a recurring basis for the three and nine months endedSeptember 30, 2018 and 2017:

(Dollars in thousands)	Beginning Balance		Total Realized and Unrealized Gains (Losses) Included in Income			Sales/Exits			Issuances		Distributions and Other Settlements		Transfers Out of Level 3			Ending Balance
Three months ended September 30, 2018
Non-marketable and other securities (fair value accounting):
Venture capital and private equity fund investments not measured at net asset value (1)	$	1,001	$	—		$	—		$	—	$	—	$	—		$	1,001
Other assets:
Equity warrant assets (2)	137,753		32,237			(34,101		)	4,809		—		(209		)	140,489
Total assets	$	138,754	$	32,237		$	(34,101	)	$	4,809	$	—	$	(209	)	$	141,490
Three months ended September 30, 2017
Non-marketable and other securities (fair value accounting):
Venture capital and private equity fund investments not measured at net asset value (1)	$	1,897	$	—		$	—		$	—	$	—	$	—		$	1,897
Other assets:
Equity warrant assets (2)	128,952		24,354			(17,412		)	3,622		—		(441		)	139,075
Total assets	$	130,849	$	24,354		$	(17,412	)	$	3,622	$	—	$	(441	)	$	140,972
Nine months ended September 30, 2018
Non-marketable and other securities (fair value accounting):
Other venture capital investments (1)	$	919	$	82		$	—		$	—	$	—	$	—		$	1,001
Other assets:
Equity warrant assets (2)	121,331		69,097			(61,464		)	14,007		—		(2,482		)	140,489
Total assets	$	122,250	$	69,179		$	(61,464	)	$	14,007	$	—	$	(2,482	)	$	141,490
Nine months ended September 30, 2017
Non-marketable and other securities (fair value accounting):
Other venture capital investments (1)	$	2,040	$	(143	)	$	—		$	—	$	—	$	—		$	1,897
Other assets:
Equity warrant assets (2)	128,813		41,549			(40,998		)	11,071		—		(1,360		)	139,075
Total assets	$	130,853	$	41,406		$	(40,998	)	$	11,071	$	—	$	(1,360	)	$	140,972

(1) Realized and unrealized gains (losses) are recorded in the line item “Gains on investment securities, net," a component of noninterest income.

(2) Realized and unrealized gains (losses) are recorded in the line item “Gains on equity warrant assets, net," a component of noninterest income.

Unrealized Gains Included in Earnings Attributable to Level 3 Assets Held

The following table presents the amount of net unrealized gains and losses included in earnings (which is inclusive of noncontrolling interest) attributable to Level 3 assets still held at September 30, 2018 and 2017:

	Three months ended September 30,				Nine months ended September 30,
(Dollars in thousands)	2018		2017		2018		2017
Non-marketable and other securities (fair value accounting):
Venture capital and private equity fund investments not measured at net asset value (1)	$	—	$	—	$	82	$	(143	)
Other assets:
Equity warrant assets (2)	15,841		17,827		30,954		23,734
Total unrealized gains, net	$	15,841	$	17,827	$	31,036	$	23,591
Unrealized gains (losses) attributable to noncontrolling interests (1)	$	—	$	—	$	73	$	(127	)

(1) Unrealized gains (losses) are recorded in the line item “Gains on investment securities, net," a component of noninterest income.

(2) Unrealized gains (losses) are recorded in the line item “Gains on equity warrant assets, net," a component of noninterest income.

Quantitative Information About Significant Unobservable Inputs

The following table presents quantitative information about the significant unobservable inputs used for certain of our Level 3 fair value measurements at September 30, 2018 and December 31, 2017. We have not included in this table our venture capital and private equity fund investments (fair value accounting) as we use net asset value per share (as obtained from the general partners of the investments) as a practical expedient to determine fair value.

(Dollars in thousands)	Fair value		Valuation Technique	Significant Unobservable Inputs	Weighted  Average
September 30, 2018:
Venture capital and private equity fund investments (fair value accounting)	$	1,001	Private company equity pricing	(1)	(1	)
Equity warrant assets (public portfolio)	1,805		Black-Scholes option pricing model	Volatility	53.1	%
				Risk-Free interest rate	3.0
				Sales restrictions discount (2)	14.1
Equity warrant assets (private portfolio)	138,684		Black-Scholes option pricing model	Volatility	38.2
				Risk-Free interest rate	2.8
				Marketability discount (3)	17.2
				Remaining life assumption (4)	45.0
December 31, 2017:
Venture capital and private equity fund investments (fair value accounting)	$	919	Private company equity pricing	(1)	(1	)
Equity warrant assets (public portfolio)	1,936		Black-Scholes option pricing model	Volatility	47.9	%
				Risk-Free interest rate	2.1
				Sales restrictions discount (2)	15.5
Equity warrant assets (private portfolio)	119,395		Black-Scholes option pricing model	Volatility	36.7
				Risk-Free interest rate	1.8
				Marketability discount (3)	16.4
				Remaining life assumption (4)	45.0

(1) In determining the fair value of our venture capital and private equity fund investment portfolio (not measured at net asset value), we evaluate a variety of factors related to each underlying private portfolio company including, but not limited to, actual and forecasted results, cash position, recent or planned transactions and market comparable companies. Additionally, we have ongoing communication with the portfolio companies and venture capital fund managers, to determine whether there is a material change in fair value. We use company provided valuation reports, if available, to support our valuation assumptions. These factors are specific to each portfolio company and a weighted average or range of values of the unobservable inputs is not meaningful.

(2) We adjust quoted market prices of public companies, which are subject to certain sales restrictions. Sales restriction discounts generally range from 10 percent to 20 percent depending on the duration of the sales restrictions, which typically range from three to six months.

(3) Our marketability discount is applied to all private company warrants to account for a general lack of liquidity due to the private nature of the associated underlying company. The quantitative measure used is based upon various option-pricing models. On a quarterly basis, a sensitivity analysis is performed on our marketability discount.

(4) We adjust the contractual remaining term of private company warrants based on our estimate of the actual remaining life, which we determine by utilizing historical data on cancellations and exercises. At September 30, 2018, the weighted average contractual remaining term was 6.2 years, compared to our estimated remaining life of 2.8 years. On a quarterly basis, a sensitivity analysis is performed on our remaining life assumption.

Summary of Estimated Fair Values of Financial Instruments Not Carried at Fair Value

The following fair value hierarchy table presents the estimated fair values of our financial instruments that are not carried at fair value at September 30, 2018 and December 31, 2017:

			Estimated Fair Value
(Dollars in thousands)	Carrying Amount		Total		Level 1		Level 2		Level 3
September 30, 2018:
Financial assets:
Cash and cash equivalents	$	3,819,141	$	3,819,141	$	3,819,141	$	—	$	—
Held-to-maturity securities	15,899,726		15,372,238		—		15,372,238		—
Non-marketable securities not measured at net asset value	134,646		134,646		—		—		134,646
Non-marketable securities measured at net asset value	134,017		134,017		—		—		—
Net commercial loans	24,253,625		23,285,628		—		—		23,285,628
Net consumer loans	2,955,577		2,809,916		—		—		2,809,916
FHLB and Federal Reserve Bank stock	102,378		102,378		—		—		102,378
Financial liabilities:
Short-term borrowings	2,631,252		2,631,252		—		2,631,252		—
Non-maturity deposits (1)	48,518,701		48,518,701		48,518,701		—		—
Time deposits	77,410		77,047		—		77,047		—
3.50% Senior Notes	347,554		338,370		—		338,370		—
5.375% Senior Notes	348,663		363,447		—		363,447		—
Off-balance sheet financial assets:
Commitments to extend credit	—		22,857		—		—		22,857
December 31, 2017:
Financial assets:
Cash and cash equivalents	$	2,923,075	$	2,923,075	$	2,923,075	$	—	$	—
Held-to-maturity securities	12,663,455		12,548,280		—		12,548,280		—
Non-marketable securities (cost and equity method accounting) not measured at net asset value	120,019		126,345		—		—		126,345
Non-marketable securities (cost and equity method accounting) measured at net asset value	228,399		331,496		—		—		—
Net commercial loans	20,238,247		20,520,623		—		—		20,520,623
Net consumer loans	2,613,045		2,593,538		—		—		2,593,538
FHLB and Federal Reserve Bank stock	60,020		60,020		—		—		60,020
Financial liabilities:
Short-term borrowings	1,033,730		1,033,730		1,033,730		—		—
Non-maturity deposits (1)	44,206,929		44,206,929		44,206,929		—		—
Time deposits	47,146		46,885		—		46,885		—
3.50% Senior Notes	347,303		352,058		—		352,058		—
5.375% Senior Notes	348,189		374,483		—		374,483		—
Off-balance sheet financial assets:
Commitments to extend credit	—		22,208		—		—		22,208

(1) Includes noninterest-bearing demand deposits, interest-bearing checking accounts, money market accounts and interest-bearing sweep deposits.

Summary of Estimated Fair Values of Investments and Remaining Unfunded Commitments for Each Major Category of Investments

The following table is a summary of the estimated fair values of these investments and remaining unfunded commitments for each major category of these investments as of September 30, 2018:

(Dollars in thousands)	Carrying Amount		Fair Value		Unfunded Commitments
Non-marketable securities (fair value accounting):
Venture capital and private equity fund investments (1)	$	334,419	$	334,419	$	13,255
Non-marketable securities (equity method accounting):
Venture capital and private equity fund investments (2)	112,537		112,537		4,943
Debt funds (2)	5,241		5,241		—
Other investments (2)	16,239		16,239		886
Total	$	468,436	$	468,436	$	19,084

(1) Venture capital and private equity fund investments within non-marketable securities (fair value accounting) include investments made by our managed funds of funds and one of our direct venture funds (consolidated VIEs) and investments in venture capital and private equity fund investments (unconsolidated VIEs). Collectively, these investments in venture capital and private equity funds are primarily in U.S. and global technology and life science/healthcare companies. Included in the fair value and unfunded commitments of fund investments under fair value accounting are $93.0 million and $4.3 million, respectively, attributable to noncontrolling interests. It is estimated that we will receive distributions from the fund investments over the next 10 to 13 years, depending on the age of the funds and any potential extensions of terms of the funds.

(2) Venture capital and private equity fund investments, debt funds, and other fund investments within non-marketable securities (equity method accounting) include funds that invest in or lend money to primarily U.S. and global technology and life science/healthcare companies. It is estimated that we will receive distributions from the funds over the next 5 to 8 years, depending on the age of the funds and any potential extensions of the terms of the funds.

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Basis of Presentation - Adoption of New Accounting Standards (Detail) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Jan. 01, 2018	Dec. 31, 2017
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Accounts receivable		$ 61,090		$ 61,090		$ 21,606	$ 55,946
Deferred fees		556		556		736	27,057
Current taxes payable		2,002		2,002		2,458	4,675
Retained earnings		3,672,696		3,672,696		2,861,035	2,866,837
Fund management fees		5,479		17,144
Income tax expense		95,308	$ 97,351	246,561	$ 220,412
Net income available to common stockholders		$ 274,817	$ 148,620	$ 707,576	$ 373,296
Diluted (dollars per share)		$ 5.10	$ 2.79	$ 13.15	$ 7.01
Reclassification of stranded tax effect for ASU 2018-02	[1]	$ 0	$ 0	$ 319	$ 0
Accounting Standards Update 2014-09
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Accounts receivable							(34,340)
Deferred fees							(26,321)
Current taxes payable							(2,217)
Retained earnings							(5,802)
Cumulative adjustment for ASU, net of tax	[2]						(5,802)
Accounting Standards Update 2018-02
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Reclassification of stranded tax effect for ASU 2018-02				300
Accounting Standards Update 2016-01
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative adjustment for ASU, net of tax	[2]						74,595
Total SVBFG Stockholders’ Equity | Accounting Standards Update 2014-09
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative adjustment for ASU, net of tax	[2]						(5,802)
Total SVBFG Stockholders’ Equity | Accounting Standards Update 2016-01
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative adjustment for ASU, net of tax						74,600	74,595	[2]
Accumulated Other Comprehensive Income (Loss) | Accounting Standards Update 2018-02
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Reclassification of stranded tax effect for ASU 2018-02	[2]			(319)
Accumulated Other Comprehensive Income (Loss) | Accounting Standards Update 2016-01
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative adjustment for ASU, net of tax						$ (29,200)	$ (29,171)	[2]
Balances Without Adoption of ASC 606
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Accounts receivable		100,470		100,470
Deferred fees		28,379		28,379
Current taxes payable		(694)		(694)
Retained earnings		3,678,020		3,678,020
Fund management fees		6,087		19,001
Income tax expense		95,463		247,040
Net income available to common stockholders		$ 275,270		$ 708,954
Diluted (dollars per share)		$ 5.11		$ 13.18
Effect of Change Higher/(Lower) | Accounting Standards Update 2014-09
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Accounts receivable		$ (39,380)		$ (39,380)
Deferred fees		(27,823)		(27,823)
Current taxes payable		2,696		2,696
Retained earnings		(5,324)		(5,324)
Fund management fees		(608)		(1,857)
Income tax expense		(155)		(479)
Net income available to common stockholders		$ (453)		$ (1,378)
Diluted (dollars per share)		$ (0.01)		$ (0.03)

[1] See "Adoption of New Accounting Standards" in Note 1—“Basis of Presentation” of the “Notes to Interim Consolidated Financial Statements (unaudited)” under Part I, Item 1 of this report for additional details.

[2] See "Adoption of New Accounting Standards" in Note 1—“Basis of Presentation” of the “Notes to Interim Consolidated Financial Statements (unaudited)” under Part I, Item 1 of this report for additional details.

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Stockholders' Equity and EPS - Reclassifications out of AOCI (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Reclassification adjustment for losses (gains) included in net income	$ 32,193	$ 15,238	$ 77,365	$ 48,838
Related tax (benefit) expense	(95,308)	(97,351)	(246,561)	(220,412)
Net income available to common stockholders	274,817	148,620	707,576	373,296
Reclassification out of Accumulated Other Comprehensive Income | Gains on investment securities, net
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Reclassification adjustment for losses (gains) included in net income	0	101	0	(384)
Related tax (benefit) expense	0	(41)	0	157
Net income available to common stockholders	$ 0	$ 60	$ 0	$ (227)

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Stockholders' Equity and EPS - Reconciliation of Basic EPS to Diluted EPS (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Numerator:
Net income available to common stockholders	$ 274,817	$ 148,620	$ 707,576	$ 373,296
Denominator:
Weighted average common shares outstanding-basic (in shares)	53,235	52,705	53,062	52,530
Weighted average common shares outstanding—diluted (in shares)	53,919	53,305	53,800	53,230
Earnings per common share:
Basic (dollars per share)	$ 5.16	$ 2.82	$ 13.33	$ 7.11
Diluted (dollars per share)	$ 5.10	$ 2.79	$ 13.15	$ 7.01
Stock options and ESPP
Denominator:
Weighted average effect of dilutive securities (in shares)	383	343	404	381
Restricted stock units
Denominator:
Weighted average effect of dilutive securities (in shares)	301	257	334	319

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Stockholders' Equity and EPS - Common Shares Excluded from Diluted EPS Calculation as They Were Deemed to be Anti-Dilutive (Detail) - shares shares in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Shares excluded from diluted earnings per share calculation	91	117	120	63
Stock options
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Shares excluded from diluted earnings per share calculation	86	112	49	61
Restricted stock units
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Shares excluded from diluted earnings per share calculation	5	5	71	2

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Stockholders' Equity and EPS - QTD Stockholders' Equity (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Stockholders Equity Note [Line Items]
Balance	$ 4,804,841	$ 4,040,035	$ 4,319,415	$ 3,777,037
Common stock issued under employee benefit plans, net of restricted stock cancellations	1,943	2,370	9,108	14,192
Net income	281,365	154,118	736,417	394,514
Capital calls and distributions, net	(8,060)	(8,613)	(22,785)	(18,216)
Net change in unrealized gains and losses on AFS securities, net of tax	(17,908)	556	(70,763)	(7,491)
Amortization of unrealized holding gains on securities transferred from AFS to HTM, net of tax	(1,283)	(953)	(2,830)	(2,947)
Foreign currency translation adjustments, net of tax	(2,354)	1,141	(3,855)	2,642
Share-based compensation, net	11,501	8,644	33,968	35,473
Balance	5,070,045	4,197,298	5,070,045	4,197,298
Common Stock
Stockholders Equity Note [Line Items]
Balance	$ 53	$ 53	$ 53	$ 52
Balance (in shares)	53,210,627	52,684,159	52,835,188	52,254,074
Common stock issued under employee benefit plans, net of restricted stock cancellations (in shares)	39,628	39,495	405,395	458,742
Common stock issued under employee benefit plans, net of restricted stock cancellations	$ 0	$ 0	$ 0	$ 1
Balance	$ 53	$ 53	$ 53	$ 53
Balance (in shares)	53,250,255	52,723,654	53,250,255	52,723,654
Additional Paid-in Capital
Stockholders Equity Note [Line Items]
Balance	$ 1,346,586	$ 1,283,485	$ 1,314,377	$ 1,242,741
Common stock issued under employee benefit plans, net of restricted stock cancellations	1,943	2,370	9,108	14,191
Share-based compensation, net	11,501	8,644	33,968	35,473
Balance	1,360,030	1,294,499	1,360,030	1,294,499
Retained Earnings
Stockholders Equity Note [Line Items]
Balance	3,397,879	2,601,007	2,866,837	2,376,331
Net income	274,817	148,620	707,576	373,296
Balance	3,672,696	2,749,627	3,672,696	2,749,627
Accumulated Other Comprehensive Income (Loss)
Stockholders Equity Note [Line Items]
Balance	(86,865)	14,890	(1,472)	23,430
Net change in unrealized gains and losses on AFS securities, net of tax	(17,908)	556	(70,763)	(7,491)
Amortization of unrealized holding gains on securities transferred from AFS to HTM, net of tax	(1,283)	(953)	(2,830)	(2,947)
Foreign currency translation adjustments, net of tax	(2,354)	1,141	(3,855)	2,642
Balance	(108,410)	15,634	(108,410)	15,634
Total SVBFG Stockholders’ Equity
Stockholders Equity Note [Line Items]
Balance	4,657,653	3,899,435	4,179,795	3,642,554
Common stock issued under employee benefit plans, net of restricted stock cancellations	1,943	2,370	9,108	14,192
Net income	274,817	148,620	707,576	373,296
Net change in unrealized gains and losses on AFS securities, net of tax	(17,908)	556	(70,763)	(7,491)
Amortization of unrealized holding gains on securities transferred from AFS to HTM, net of tax	(1,283)	(953)	(2,830)	(2,947)
Foreign currency translation adjustments, net of tax	(2,354)	1,141	(3,855)	2,642
Share-based compensation, net	11,501	8,644	33,968	35,473
Balance	4,924,369	4,059,813	4,924,369	4,059,813
Noncontrolling Interests
Stockholders Equity Note [Line Items]
Balance	147,188	140,600	139,620	134,483
Net income	6,548	5,498	28,841	21,218
Capital calls and distributions, net	(8,060)	(8,613)	(22,785)	(18,216)
Balance	$ 145,676	$ 137,485	$ 145,676	$ 137,485

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Share-Based Compensation - Share-Based Compensation and Related Tax Benefits (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Share-based compensation expense	$ 11,501	$ 8,644	$ 33,968	$ 27,739
Income tax benefit related to share-based compensation expense	$ (2,895)	$ (3,154)	$ (7,955)	$ (9,518)

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Share-Based Compensation - Unrecognized Compensation Expense (Detail) $ in Thousands	9 Months Ended
	Sep. 30, 2018 USD ($)
Unrecognized Share Based Compensation Expense [Line Items]
Unrecognized Expense	$ 86,562
Stock options
Unrecognized Share Based Compensation Expense [Line Items]
Unrecognized Expense	$ 13,525
Average Expected Recognition Period - in Years	2 years 10 months 28 days
Restricted stock units
Unrecognized Share Based Compensation Expense [Line Items]
Unrecognized Expense	$ 73,037
Average Expected Recognition Period - in Years	2 years 8 months 27 days

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Share-Based Compensation - Share-Based Payment Award Activity (Detail)	9 Months Ended
	Sep. 30, 2018 USD ($) $ / shares shares
Options
Outstanding, beginning of period, in shares | shares	808,049
Granted, in shares | shares	89,616
Exercised, in shares | shares	(191,585)
Forfeited, in shares | shares	(9,498)
Expired, in shares | shares	(2,337)
Outstanding, end of period, in shares | shares	694,245
Vested and expected to vest, end of period, in shares | shares	673,674
Exercisable, end of period, in shares | shares	415,993
Weighted Average Exercise Price
Outstanding, beginning of period, in usd per share | $ / shares	$ 105.68
Granted, in usd per share | $ / shares	305.71
Exercised, in usd per share | $ / shares	83.37
Forfeited, in usd per share | $ / shares	187.76
Expired, in usd per share | $ / shares	60.37
Outstanding, end of period, in usd per share | $ / shares	136.68
Vested and expected to vest, end of period, in usd per share | $ / shares	134.25
Exercisable, end of period, in usd per share | $ / shares	$ 99.63
Weighted Average Remaining Contractual Life - in Years
Outstanding, end of period	3 years 9 months 3 days
Vested and expected to vest, end of period	3 years 8 months 11 days
Exercisable, end of period	2 years 7 months 27 days
Aggregate Intrinsic Value of In-The-Money Options
Outstanding, end of period | $	$ 120,932,288
Vested and expected to vest, end of period | $	118,982,041
Exercisable, end of period | $	$ 87,856,349

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Share-Based Compensation - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Closing stock price (usd per share)	$ 310.83		$ 310.83
Total intrinsic value of options exercised	$ 8.5	$ 3.8	$ 39.5	$ 25.8

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Share-Based Compensation - Information for Restricted Stock Units under Equity Incentive Plan (Detail) - Restricted stock units	9 Months Ended
	Sep. 30, 2018 $ / shares shares
Shares
Nonvested, beginning of period, in shares | shares	637,667
Granted, in shares | shares	193,405
Vested, in shares | shares	(213,944)
Forfeited, in shares | shares	(37,080)
Nonvested, end of period, in shares | shares	580,048
Weighted Average Grant Date Fair Value
Nonvested, beginning of period, in usd per share | $ / shares	$ 135.86
Granted, in usd per share | $ / shares	302.53
Vested, in usd per share | $ / shares	130.20
Forfeited, in usd per share | $ / shares	170.97
Nonvested, end of period, in usd per share | $ / shares	$ 191.28

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Variable Interest Entities - Carrying Amounts and Classification of Significant Variable Interests (Detail) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017	Sep. 30, 2017	Dec. 31, 2016
Variable Interest Entity [Line Items]
Cash and cash equivalents	$ 3,819,141	$ 2,923,075	$ 3,555,571	$ 2,545,750
Non-marketable and other equity securities	896,249	651,053
Accrued interest receivable and other assets	1,105,917	876,246
Total assets	58,139,734	51,214,467
Other liabilities	1,146,109	911,755
Total liabilities	53,069,689	46,895,052
Maximum exposure to loss in unconsolidated VIEs	524,812	346,097
Investments in qualified affordable housing projects, net	261,706	174,214
Other liabilities consisting of unfunded commitments related to qualified affordable housing projects	166,867	100,891
Consolidated
Variable Interest Entity [Line Items]
Cash and cash equivalents	5,470	6,674
Non-marketable and other equity securities	212,514	190,562
Accrued interest receivable and other assets	298	365
Total assets	218,282	197,601
Other liabilities	680	990
Total liabilities	680	990
Maximum exposure to loss in unconsolidated VIEs	217,600
Unconsolidated
Variable Interest Entity [Line Items]
Cash and cash equivalents	0	0
Non-marketable and other equity securities	524,812	346,097
Accrued interest receivable and other assets	0	0
Total assets	524,812	346,097
Other liabilities	166,867	100,891
Total liabilities	$ 166,867	$ 100,891

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Variable Interest Entities - Additional Information (Detail) $ in Thousands	Sep. 30, 2018 USD ($) entity	Dec. 31, 2017 USD ($)
Investments In Variable Interest Entities [Abstract]
Number of consolidated entities | entity	4
Variable Interest Entity [Line Items]
Maximum exposure to loss in unconsolidated VIEs	$ 524,812	$ 346,097
Consolidated
Variable Interest Entity [Line Items]
Maximum exposure to loss in unconsolidated VIEs	$ 217,600

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Cash and Cash Equivalents (Detail) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017	Sep. 30, 2017	Dec. 31, 2016
Cash and Cash Equivalents [Abstract]
Cash and due from banks	$ 3,697,018	$ 2,672,290
Securities purchased under agreements to resell	119,181	247,876
Other short-term investment securities	2,942	2,909
Total cash and cash equivalents	$ 3,819,141	$ 2,923,075	$ 3,555,571	$ 2,545,750

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Cash and Cash Equivalents (Additional Information) (Detail) - USD ($) $ in Millions	Sep. 30, 2018	Dec. 31, 2017
Cash and Cash Equivalents [Abstract]
Deposits at the Federal Reserve Bank earning interest at the Federal Funds target rate	$ 2,100.0	$ 600.0
Interest-earning deposits in other financial institutions	1,100.0
Fair value of securities purchased under agreements to resell	$ 124.5	$ 252.8

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Investment Securities - Components of Available-for-Sale Investment Securities Portfolio (Detail) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 9,236,301	$ 11,131,008
Unrealized Gains	1,417	46,840
Unrealized Losses	(150,109)	(57,184)
Carrying Value	9,087,609	11,120,664
U.S. treasury securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	5,560,828	6,865,068
Unrealized Gains	117	1,113
Unrealized Losses	(59,071)	(25,679)
Carrying Value	5,501,874	6,840,502
U.S. agency debentures
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	1,357,069	1,569,195
Unrealized Gains	0	3,569
Unrealized Losses	(10,397)	(5,636)
Carrying Value	1,346,672	1,567,128
Residential mortgage-backed securities | Agency-issued collateralized mortgage obligations | Fixed rate
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	2,001,048	2,292,311
Unrealized Gains	3	258
Unrealized Losses	(80,510)	(25,534)
Carrying Value	1,920,541	2,267,035
Residential mortgage-backed securities | Agency-issued collateralized mortgage obligations | Variable rate
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	317,356	372,481
Unrealized Gains	1,297	1,375
Unrealized Losses	(131)	(126)
Carrying Value	$ 318,522	373,730
Equity securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost		31,953
Unrealized Gains		40,525
Unrealized Losses		(209)
Carrying Value		$ 72,269

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Investment Securities - Activity of Available-for-Sale Securities (Detail) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Investments, Debt and Equity Securities [Abstract]
Sales proceeds	$ 0	$ 2,287,000	$ 0	$ 7,311,000
Gross realized gains	0	38,000	0	1,131,000
Gross realized losses	0	(139,000)	0	(747,000)
Net realized (losses) gains	$ 0	$ (101,000)	$ 0	$ 384,000

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Investment Securities - Summary of Unrealized Losses on Available-for-Sale Securities (Detail) $ in Thousands	Sep. 30, 2018 USD ($) Investment	Dec. 31, 2017 USD ($) Investment
Debt Securities, Available-for-sale [Line Items]
Less than 12 months - Fair Value of Investments	$ 5,580,693	$ 8,913,199
Less than 12 months - Unrealized Losses	(81,473)	(51,432)
12 months or longer - Fair Value of Investments	3,100,433	713,348
12 months or longer - Unrealized Losses	(68,636)	(5,752)
Fair Value of Investments	8,681,126	9,626,547
Unrealized Losses	$ (150,109)	$ (57,184)
Number of investments in unrealized loss position | Investment	265	268
Number of investments with unrealized losses greater than 12 months | Investment	109	46
U.S. treasury securities
Debt Securities, Available-for-sale [Line Items]
Less than 12 months - Fair Value of Investments	$ 3,915,282	$ 5,968,914
Less than 12 months - Unrealized Losses	(46,503)	(23,397)
12 months or longer - Fair Value of Investments	1,438,839	323,966
12 months or longer - Unrealized Losses	(12,568)	(2,282)
Fair Value of Investments	5,354,121	6,292,880
Unrealized Losses	(59,071)	(25,679)
U.S. agency debentures
Debt Securities, Available-for-sale [Line Items]
Less than 12 months - Fair Value of Investments	838,609	736,541
Less than 12 months - Unrealized Losses	(4,615)	(2,289)
12 months or longer - Fair Value of Investments	508,062	336,196
12 months or longer - Unrealized Losses	(5,782)	(3,347)
Fair Value of Investments	1,346,671	1,072,737
Unrealized Losses	(10,397)	(5,636)
Residential mortgage-backed securities | Fixed rate | Agency-issued collateralized mortgage obligations
Debt Securities, Available-for-sale [Line Items]
Less than 12 months - Fair Value of Investments	812,726	2,193,277
Less than 12 months - Unrealized Losses	(30,350)	(25,534)
12 months or longer - Fair Value of Investments	1,103,803	0
12 months or longer - Unrealized Losses	(50,160)	0
Fair Value of Investments	1,916,529	2,193,277
Unrealized Losses	(80,510)	(25,534)
Residential mortgage-backed securities | Variable rate | Agency-issued collateralized mortgage obligations
Debt Securities, Available-for-sale [Line Items]
Less than 12 months - Fair Value of Investments	14,076	13,843
Less than 12 months - Unrealized Losses	(5)	(3)
12 months or longer - Fair Value of Investments	49,729	53,186
12 months or longer - Unrealized Losses	(126)	(123)
Fair Value of Investments	63,805	67,029
Unrealized Losses	$ (131)	(126)
Equity securities
Debt Securities, Available-for-sale [Line Items]
Less than 12 months - Fair Value of Investments		624
Less than 12 months - Unrealized Losses		(209)
12 months or longer - Fair Value of Investments		0
12 months or longer - Unrealized Losses		0
Fair Value of Investments		624
Unrealized Losses		$ (209)

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Investment Securities - Summary of Remaining Contractual Principal Maturities for Available-for-Sale Securities (Detail) $ in Thousands	9 Months Ended
	Sep. 30, 2018 USD ($)
Debt Securities, Available-for-sale, Fair Value, Fiscal Year Maturity [Abstract]
Total	$ 9,087,609
One Year or Less	2,669,709
After One Year to Five Years	3,741,021
After Five Years to Ten Years	466,929
After Ten Years	2,209,950
U.S. treasury securities
Debt Securities, Available-for-sale, Fair Value, Fiscal Year Maturity [Abstract]
Total	5,501,874
U.S. agency debentures
Debt Securities, Available-for-sale, Fair Value, Fiscal Year Maturity [Abstract]
Total	1,346,672
Residential mortgage-backed securities | Fixed rate | Agency-issued collateralized mortgage obligations
Debt Securities, Available-for-sale, Fair Value, Fiscal Year Maturity [Abstract]
Total	1,920,541
Residential mortgage-backed securities | Variable rate | Agency-issued collateralized mortgage obligations
Debt Securities, Available-for-sale, Fair Value, Fiscal Year Maturity [Abstract]
Total	$ 318,522
Available-for-sale Securities | Lower Limit
Debt Securities, Available-for-sale [Line Items]
Mortgage-backed securities contractual maturities (in years)	10 years
Available-for-sale Securities | Upper Limit
Debt Securities, Available-for-sale [Line Items]
Mortgage-backed securities contractual maturities (in years)	30 years
Available-for-sale Securities | U.S. treasury securities
Debt Securities, Available-for-sale, Fair Value, Fiscal Year Maturity [Abstract]
One Year or Less	$ 2,016,438
After One Year to Five Years	3,047,620
After Five Years to Ten Years	437,816
After Ten Years	0
Available-for-sale Securities | U.S. agency debentures
Debt Securities, Available-for-sale, Fair Value, Fiscal Year Maturity [Abstract]
One Year or Less	653,271
After One Year to Five Years	693,401
After Five Years to Ten Years	0
After Ten Years	0
Available-for-sale Securities | Residential mortgage-backed securities | Fixed rate | Agency-issued collateralized mortgage obligations
Debt Securities, Available-for-sale, Fair Value, Fiscal Year Maturity [Abstract]
One Year or Less	0
After One Year to Five Years	0
After Five Years to Ten Years	29,113
After Ten Years	1,891,428
Available-for-sale Securities | Residential mortgage-backed securities | Variable rate | Agency-issued collateralized mortgage obligations
Debt Securities, Available-for-sale, Fair Value, Fiscal Year Maturity [Abstract]
One Year or Less	0
After One Year to Five Years	0
After Five Years to Ten Years	0
After Ten Years	$ 318,522

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Investment Securities - Components of Held-to-Maturity Investment Securities (Detail) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	$ 15,899,726	$ 12,663,455
Unrealized Gains	915	12,923
Unrealized Losses	(528,403)	(128,098)
Fair Value	15,372,238	12,548,280
U.S. agency debentures
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	641,134	659,979
Unrealized Gains	85	3,167
Unrealized Losses	(18,482)	(1,601)
Fair Value	622,737	661,545
Agency-issued mortgage-backed securities
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	8,333,088	6,304,969
Unrealized Gains	2	4,854
Unrealized Losses	(276,748)	(43,528)
Fair Value	8,056,342	6,266,295
Residential mortgage-backed securities | Fixed rate | Agency-issued collateralized mortgage obligations
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	2,329,065	2,829,979
Unrealized Gains	0	23
Unrealized Losses	(98,559)	(54,372)
Fair Value	2,230,506	2,775,630
Residential mortgage-backed securities | Variable rate | Agency-issued collateralized mortgage obligations
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	223,374	255,782
Unrealized Gains	667	733
Unrealized Losses	(32)	(34)
Fair Value	224,009	256,481
Agency-issued commercial mortgage-backed securities
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	2,795,952	1,868,985
Unrealized Gains	0	694
Unrealized Losses	(78,688)	(25,563)
Fair Value	2,717,264	1,844,116
Municipal bonds and notes
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	1,577,113	743,761
Unrealized Gains	161	3,452
Unrealized Losses	(55,894)	(3,000)
Fair Value	$ 1,521,380	$ 744,213

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Investment Securities - Summary of Unrealized Losses on Held to Maturity Securities (Detail) $ in Thousands	Sep. 30, 2018 USD ($) Investment	Dec. 31, 2017 USD ($) Investment
Debt Securities, Held-to-maturity, Unrealized Loss Position, Accumulated Loss [Abstract]
Fair Value of Investments, Less than 12 months	$ 9,169,096	$ 6,710,931
Unrealized Losses, Less than 12 months	(254,565)	(62,993)
Fair Value of Investments, 12 months or longer	5,971,026	2,966,895
Unrealized Losses, 12 months or longer	(273,838)	(65,105)
Fair Value of Investments	15,140,122	9,677,826
Unrealized Losses	$ (528,403)	$ (128,098)
Number of held-to-maturity investments with unrealized loss | Investment	1,433	753
Number of held-to-maturity investments in continuous loss more than 12 months | Investment	454	237
U.S. agency debentures
Debt Securities, Held-to-maturity, Unrealized Loss Position, Accumulated Loss [Abstract]
Fair Value of Investments, Less than 12 months	$ 549,916	$ 104,688
Unrealized Losses, Less than 12 months	(14,744)	(1,601)
Fair Value of Investments, 12 months or longer	61,635	0
Unrealized Losses, 12 months or longer	(3,738)	0
Fair Value of Investments	611,551	104,688
Unrealized Losses	(18,482)	(1,601)
Agency-issued mortgage-backed securities
Debt Securities, Held-to-maturity, Unrealized Loss Position, Accumulated Loss [Abstract]
Fair Value of Investments, Less than 12 months	5,514,402	4,270,377
Unrealized Losses, Less than 12 months	(155,580)	(34,092)
Fair Value of Investments, 12 months or longer	2,541,848	408,913
Unrealized Losses, 12 months or longer	(121,168)	(9,436)
Fair Value of Investments	8,056,250	4,679,290
Unrealized Losses	(276,748)	(43,528)
Residential mortgage-backed securities | Fixed rate | Agency-issued collateralized mortgage obligations
Debt Securities, Held-to-maturity, Unrealized Loss Position, Accumulated Loss [Abstract]
Fair Value of Investments, Less than 12 months	77,011	1,011,709
Unrealized Losses, Less than 12 months	(2,285)	(13,631)
Fair Value of Investments, 12 months or longer	2,153,494	1,741,614
Unrealized Losses, 12 months or longer	(96,274)	(40,741)
Fair Value of Investments	2,230,505	2,753,323
Unrealized Losses	(98,559)	(54,372)
Residential mortgage-backed securities | Variable rate | Agency-issued collateralized mortgage obligations
Debt Securities, Held-to-maturity, Unrealized Loss Position, Accumulated Loss [Abstract]
Fair Value of Investments, Less than 12 months	3,504	0
Unrealized Losses, Less than 12 months	(1)	0
Fair Value of Investments, 12 months or longer	8,445	9,812
Unrealized Losses, 12 months or longer	(31)	(34)
Fair Value of Investments	11,949	9,812
Unrealized Losses	(32)	(34)
Agency-issued commercial mortgage-backed securities
Debt Securities, Held-to-maturity, Unrealized Loss Position, Accumulated Loss [Abstract]
Fair Value of Investments, Less than 12 months	1,595,146	979,361
Unrealized Losses, Less than 12 months	(30,149)	(11,566)
Fair Value of Investments, 12 months or longer	1,122,118	773,712
Unrealized Losses, 12 months or longer	(48,539)	(13,997)
Fair Value of Investments	2,717,264	1,753,073
Unrealized Losses	(78,688)	(25,563)
Municipal bonds and notes
Debt Securities, Held-to-maturity, Unrealized Loss Position, Accumulated Loss [Abstract]
Fair Value of Investments, Less than 12 months	1,429,117	344,796
Unrealized Losses, Less than 12 months	(51,806)	(2,103)
Fair Value of Investments, 12 months or longer	83,486	32,844
Unrealized Losses, 12 months or longer	(4,088)	(897)
Fair Value of Investments	1,512,603	377,640
Unrealized Losses	$ (55,894)	$ (3,000)

XML

Investment Securities - Summary of Remaining Contractual Principal Maturities for Held-to-Maturity Securities (Detail) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2018	Dec. 31, 2017
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	$ 15,899,726	$ 12,663,455
Fair Value	15,372,238	12,548,280
One Year or Less, Amortized Cost	8,376
One Year or Less, Fair Value	8,373
After One Year to Five Years, Amortized Cost	358,915
After One Year to Five Years, Fair Value	350,493
After Five Years to Ten Years, Amortized Cost	2,126,938
After Five Years to Ten Years, Fair Value	2,039,827
After Ten Years, Amortized Cost	13,405,497
After Ten Years, Fair Value	12,973,545
U.S. agency debentures
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	641,134	659,979
Fair Value	622,737	661,545
One Year or Less, Amortized Cost	0
One Year or Less, Fair Value	0
After One Year to Five Years, Amortized Cost	104,550
After Five Years to Ten Years, Amortized Cost	536,584
After Ten Years, Amortized Cost	0
After Ten Years, Fair Value	0
Agency-issued mortgage-backed securities
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	8,333,088	6,304,969
Fair Value	8,056,342	6,266,295
One Year or Less, Amortized Cost	0
One Year or Less, Fair Value	0
After One Year to Five Years, Amortized Cost	179,847
After Five Years to Ten Years, Amortized Cost	859,233
After Ten Years, Amortized Cost	7,294,008
Residential mortgage-backed securities | Fixed rate | Agency-issued collateralized mortgage obligations
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	2,329,065	2,829,979
Fair Value	2,230,506	2,775,630
One Year or Less, Amortized Cost	0
One Year or Less, Fair Value	0
After One Year to Five Years, Amortized Cost	0
After One Year to Five Years, Fair Value	0
After Five Years to Ten Years, Amortized Cost	474,668
After Ten Years, Amortized Cost	1,854,397
After Ten Years, Fair Value	1,778,078
Residential mortgage-backed securities | Variable rate | Agency-issued collateralized mortgage obligations
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	223,374	255,782
Fair Value	224,009	256,481
One Year or Less, Amortized Cost	0
One Year or Less, Fair Value	0
After One Year to Five Years, Amortized Cost	0
After One Year to Five Years, Fair Value	0
After Five Years to Ten Years, Amortized Cost	0
After Five Years to Ten Years, Fair Value	0
After Ten Years, Amortized Cost	223,374
After Ten Years, Fair Value	224,009
Agency-issued commercial mortgage-backed securities
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	2,795,952	1,868,985
Fair Value	2,717,264	1,844,116
One Year or Less, Amortized Cost	0
One Year or Less, Fair Value	0
After One Year to Five Years, Amortized Cost	0
After One Year to Five Years, Fair Value	0
After Five Years to Ten Years, Amortized Cost	0
After Five Years to Ten Years, Fair Value	0
After Ten Years, Amortized Cost	2,795,952
Municipal bonds and notes
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	1,577,113	743,761
Fair Value	1,521,380	$ 744,213
One Year or Less, Amortized Cost	8,376
After One Year to Five Years, Amortized Cost	74,518
After Five Years to Ten Years, Amortized Cost	256,453
After Ten Years, Amortized Cost	$ 1,237,766
Held-to-maturity Securities | Lower Limit
Schedule of Held-to-maturity Securities [Line Items]
Mortgage-backed securities contractual maturities (in years)	10 years
Held-to-maturity Securities | Upper Limit
Schedule of Held-to-maturity Securities [Line Items]
Mortgage-backed securities contractual maturities (in years)	30 years
Held-to-maturity Securities | U.S. agency debentures
Schedule of Held-to-maturity Securities [Line Items]
After One Year to Five Years, Fair Value	$ 102,498
After Five Years to Ten Years, Fair Value	520,239
Held-to-maturity Securities | Agency-issued mortgage-backed securities
Schedule of Held-to-maturity Securities [Line Items]
After One Year to Five Years, Fair Value	174,664
After Five Years to Ten Years, Fair Value	821,883
After Ten Years, Fair Value	7,059,795
Held-to-maturity Securities | Residential mortgage-backed securities | Agency-issued collateralized mortgage obligations
Schedule of Held-to-maturity Securities [Line Items]
After Five Years to Ten Years, Fair Value	452,428
Held-to-maturity Securities | Agency-issued commercial mortgage-backed securities
Schedule of Held-to-maturity Securities [Line Items]
After Ten Years, Fair Value	2,717,264
Held-to-maturity Securities | Municipal bonds and notes
Schedule of Held-to-maturity Securities [Line Items]
One Year or Less, Fair Value	8,373
After One Year to Five Years, Fair Value	73,331
After Five Years to Ten Years, Fair Value	245,277
After Ten Years, Fair Value	$ 1,194,399

XML

Investment Securities - Components of Non-marketable and Other Equity Securities (Detail) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Investment Holdings [Line Items]
Investments in qualified affordable housing projects, net	$ 261,706	$ 174,214
Non-marketable and other equity securities	896,249	651,053
Non-marketable securities | Equity method accounting | Consolidated venture capital and private equity fund investments
Investment Holdings [Line Items]
Non-marketable securities, equity method accounting	112,537	89,809
Non-marketable securities | Equity method accounting | Other investments
Investment Holdings [Line Items]
Non-marketable securities, equity method accounting	125,632	111,198
Non-marketable securities | Equity method accounting | Debt funds
Investment Holdings [Line Items]
Non-marketable securities, equity method accounting	5,241	21,183
Non-marketable securities | Fair value accounting | Consolidated venture capital and private equity fund investments
Investment Holdings [Line Items]
Consolidated venture capital and private equity fund investments	126,467	128,111
Non-marketable securities | Fair value accounting | Unconsolidated venture capital and private equity fund investments
Investment Holdings [Line Items]
Unconsolidated venture capital and private equity fund investments	208,953	98,548
Non-marketable securities | Fair value accounting | Other investments
Investment Holdings [Line Items]
Other investments without a readily determinable fair value	25,253	27,680
Other equity securities | Fair value accounting
Investment Holdings [Line Items]
Other equity securities in public companies (fair value accounting)	$ 30,460	$ 310

XML

Investment Securities - Summary of Venture Capital and Private Equity Fund Investments Held by Consolidated Funds and Percentage Ownership (Detail) - Non-marketable securities - Fair value accounting - Consolidated venture capital and private equity fund investments - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2018	Dec. 31, 2017
Investment Holdings [Line Items]
Amount	$ 126,467	$ 128,111
Strategic Investors Fund, LP
Investment Holdings [Line Items]
Amount	$ 12,733	$ 14,673
Percentage of ownership	12.60%	12.60%
Capital Preferred Return Fund, LP
Investment Holdings [Line Items]
Amount	$ 56,453	$ 54,147
Percentage of ownership	20.00%	20.00%
Growth Partners, LP
Investment Holdings [Line Items]
Amount	$ 56,280	$ 58,372
Percentage of ownership	33.00%	33.00%
CP I, LP
Investment Holdings [Line Items]
Amount	$ 1,001	$ 919
Percentage of ownership	10.70%	10.70%

XML

Investment Securities - Non-marketable and Other Securities Additional Information (Detail) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018 USD ($) Investment	Sep. 30, 2017 USD ($)	Sep. 30, 2018 USD ($) Investment	Sep. 30, 2017 USD ($)	Dec. 31, 2017 USD ($) Investment
Investment Holdings [Line Items]
Investments in qualified affordable housing projects, net	$ 261,706		$ 261,706		$ 174,214
Tax credits and other tax benefits recognized	6,283	$ 4,539	16,912	$ 13,199
Amortization expense included in provision for income taxes	4,773	$ 3,533	14,269	$ 10,154
Other liabilities	$ 166,867		$ 166,867		$ 100,891
Upper Limit
Investment Holdings [Line Items]
Equity method investment voting ownership percentage	5.00%		5.00%
Non-marketable securities | Fair value accounting | Unconsolidated venture capital and private equity fund investments
Investment Holdings [Line Items]
Number of investments | Investment	220		220		235
Unconsolidated venture capital and private equity fund investments	$ 208,953		$ 208,953		$ 98,548

XML

Investment Securities - Changes to Carrying Amount of Other Investments without Readily Determinable Fair Value (Detail) $ in Thousands	9 Months Ended
	Sep. 30, 2018 USD ($)
Investments, Debt and Equity Securities [Abstract]
Carrying value as of January 1, 2018	$ 27,680
Upward carrying value adjustments	4,854
Downward carrying value adjustments	(1,729)
Additions	3,870
Sales and dispositions	(9,422)
Carrying value as of September 30, 2018	$ 25,253

XML

Investment Securities - Carrying Value and Ownership Percentage of Investments (Detail) - Non-marketable securities - Equity method accounting - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2018	Dec. 31, 2017
Consolidated venture capital and private equity fund investments
Investment Holdings [Line Items]
Non-marketable securities, equity method accounting	$ 112,537	$ 89,809
Consolidated venture capital and private equity fund investments | Strategic Investors Fund II, LP
Investment Holdings [Line Items]
Non-marketable securities, equity method accounting	$ 4,739	$ 6,342
Percentage of ownership	8.60%	8.60%
Consolidated venture capital and private equity fund investments | Strategic Investors Fund III, LP
Investment Holdings [Line Items]
Non-marketable securities, equity method accounting	$ 18,176	$ 18,758
Percentage of ownership	5.90%	5.90%
Consolidated venture capital and private equity fund investments | Strategic Investors Fund IV, LP
Investment Holdings [Line Items]
Non-marketable securities, equity method accounting	$ 29,445	$ 25,551
Percentage of ownership	5.00%	5.00%
Consolidated venture capital and private equity fund investments | Strategic Investors Fund V funds
Investment Holdings [Line Items]
Non-marketable securities, equity method accounting	$ 24,245	$ 16,856
Consolidated venture capital and private equity fund investments | CP II, LP
Investment Holdings [Line Items]
Non-marketable securities, equity method accounting	$ 6,865	$ 6,700
Percentage of ownership	5.10%	5.10%
Consolidated venture capital and private equity fund investments | CP II, LP | Indirect ownership interest
Investment Holdings [Line Items]
Percentage of ownership	3.80%
Consolidated venture capital and private equity fund investments | CP II, LP | Direct ownership interest
Investment Holdings [Line Items]
Percentage of ownership	1.30%
Consolidated venture capital and private equity fund investments | Other venture capital and private equity fund investments
Investment Holdings [Line Items]
Non-marketable securities, equity method accounting	$ 29,067	$ 15,602
Debt funds
Investment Holdings [Line Items]
Non-marketable securities, equity method accounting	$ 5,241	21,183
Debt funds | Indirect ownership interest
Investment Holdings [Line Items]
Percentage of ownership	4.00%
Debt funds | Direct ownership interest
Investment Holdings [Line Items]
Percentage of ownership	11.50%
Debt funds | Gold Hill Capital 2008, LP
Investment Holdings [Line Items]
Non-marketable securities, equity method accounting	$ 3,267	$ 18,690
Percentage of ownership	15.50%	15.50%
Debt funds | Other debt funds
Investment Holdings [Line Items]
Non-marketable securities, equity method accounting	$ 1,974	$ 2,493
Other investments
Investment Holdings [Line Items]
Non-marketable securities, equity method accounting	125,632	111,198
Other investments | SPD Silicon Valley Bank Co., Ltd.
Investment Holdings [Line Items]
Non-marketable securities, equity method accounting	$ 75,314	$ 75,337
Percentage of ownership	50.00%	50.00%
Other investments | Other investments
Investment Holdings [Line Items]
Non-marketable securities, equity method accounting	$ 50,318	$ 35,861

XML

Investment Securities - Net Gains on Non-marketable and Other Equity Securities (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Gain (Loss) on Securities [Line Items]
Total net gains on non-marketable and other equity securities	$ 32,193	$ 15,339	$ 77,365	$ 48,454
Non-marketable securities
Gain (Loss) on Securities [Line Items]
Unrealized net gains on non-marketable and other equity securities still held	31,836	15,388	98,171	45,099
Less: Net gains (losses) on non-marketable and other equity securities sold	357	(49)	(20,806)	3,355
Non-marketable securities | Fair value accounting | Consolidated venture capital and private equity fund investments
Gain (Loss) on Securities [Line Items]
Unrealized net gains on non-marketable and other equity securities still held	2,928	4,473	18,971	20,649
Non-marketable securities | Fair value accounting | Unconsolidated venture capital and private equity fund investments
Gain (Loss) on Securities [Line Items]
Unrealized net gains on non-marketable and other equity securities still held	6,240	4,697	37,095	13,928
Non-marketable securities | Fair value accounting | Other investments
Gain (Loss) on Securities [Line Items]
Unrealized net gains on non-marketable and other equity securities still held	2,509	(49)	4,310	3,354
Non-marketable securities | Equity method accounting | Consolidated venture capital and private equity fund investments
Gain (Loss) on Securities [Line Items]
Unrealized net gains on non-marketable and other equity securities still held	11,341	4,319	30,122	10,710
Non-marketable securities | Equity method accounting | Other investments
Gain (Loss) on Securities [Line Items]
Unrealized net gains on non-marketable and other equity securities still held	3,295	(933)	4,753	(3,163)
Non-marketable securities | Equity method accounting | Debt funds
Gain (Loss) on Securities [Line Items]
Unrealized net gains on non-marketable and other equity securities still held	1,473	2,445	(100)	2,696
Other equity securities | Fair value accounting
Gain (Loss) on Securities [Line Items]
Unrealized net gains on non-marketable and other equity securities still held	$ 4,407	$ 387	$ (17,786)	$ 280

XML

Loans, Allowance for Loan Losses and Allowance for Unfunded Credit Commitments - Composition of Loans, Net of Unearned Income (Detail) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]
Unearned income on loans	$ 174,000	$ 148,000
Loans, net of unearned income	27,494,915	23,106,316
Commercial loans, excluding real estate secured and construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of unearned income	23,712,308	19,697,163
Commercial loans, excluding real estate secured and construction | Software/internet
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of unearned income	6,258,724	6,172,531
Commercial loans, excluding real estate secured and construction | Hardware
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of unearned income	1,306,709	1,193,599
Commercial loans, excluding real estate secured and construction | Private equity/venture capital
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of unearned income	13,360,511	9,952,377
Commercial loans, excluding real estate secured and construction | Life science/healthcare
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of unearned income	2,302,453	1,808,827
Commercial loans, excluding real estate secured and construction | Premium wine | Non-real estate secured commercial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of unearned income	227,498	204,105
Commercial loans, excluding real estate secured and construction | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of unearned income	256,413	365,724
Real estate secured loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of unearned income	3,283,726	3,011,627
Real estate secured loans | Premium wine
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of unearned income	685,941	669,053
Real estate secured loans | Real estate secured loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of unearned income	2,556,906	2,300,506
Real estate secured loans | Other real estate loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of unearned income	40,879	42,068
Construction loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of unearned income	81,163	68,546
Consumer loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of unearned income	2,974,624	2,629,486
Consumer loans | Real estate secured loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of unearned income	2,556,906	2,300,506
Consumer loans | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of unearned income	$ 417,718	$ 328,980

XML

Loans, Allowance for Loan Losses and Allowance for Unfunded Credit Commitments - Composition of Loans, Net of Unearned income (Additional Information) (Detail) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of unearned income	$ 27,494,915	$ 23,106,316
Credit card loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of unearned income	342,000	270,000
Real estate secured loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of unearned income	3,283,726	3,011,627
Real estate secured loans | Premium wine
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross construction loans	92,000	100,000
Loans, net of unearned income	685,941	669,053
Real estate secured loans | Real estate secured loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of unearned income	2,556,906	2,300,506
Consumer loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of unearned income	2,974,624	2,629,486
Consumer loans | Real estate secured loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of unearned income	2,556,906	2,300,506
Consumer loans | Real estate secured loans | Loans for personal residence
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of unearned income	2,196,948	1,995,840
Consumer loans | Real estate secured loans | Loans to eligible employees
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of unearned income	285,186	243,118
Consumer loans | Real estate secured loans | Home equity lines of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of unearned income	$ 74,772	$ 61,548

XML

Loans, Allowance for Loan Losses and Allowance for Unfunded Credit Commitments - Composition of Loans, Net of Unearned Income, Broken Out by Portfolio Segment and Class of Financing Receivable (Detail) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Financing Receivable, Recorded Investment [Line Items]
Unearned income on loans	$ 174,000	$ 148,000
Loans, net of unearned income	27,494,915	23,106,316
Commercial loans
Financing Receivable, Recorded Investment [Line Items]
Loans, net of unearned income	24,520,291	20,476,830
Commercial loans | Software/internet
Financing Receivable, Recorded Investment [Line Items]
Loans, net of unearned income	6,258,724	6,172,531
Commercial loans | Hardware
Financing Receivable, Recorded Investment [Line Items]
Loans, net of unearned income	1,306,709	1,193,599
Commercial loans | Private equity/venture capital
Financing Receivable, Recorded Investment [Line Items]
Loans, net of unearned income	13,360,511	9,952,377
Commercial loans | Life science/healthcare
Financing Receivable, Recorded Investment [Line Items]
Loans, net of unearned income	2,302,453	1,808,827
Commercial loans | Premium wine
Financing Receivable, Recorded Investment [Line Items]
Loans, net of unearned income	913,439	873,158
Commercial loans | Other
Financing Receivable, Recorded Investment [Line Items]
Loans, net of unearned income	378,455	476,338
Consumer loans
Financing Receivable, Recorded Investment [Line Items]
Loans, net of unearned income	2,974,624	2,629,486
Consumer loans | Other
Financing Receivable, Recorded Investment [Line Items]
Loans, net of unearned income	417,718	328,980
Consumer loans | Real estate secured loans
Financing Receivable, Recorded Investment [Line Items]
Loans, net of unearned income	$ 2,556,906	$ 2,300,506

XML

Loans, Allowance for Loan Losses and Allowance for Unfunded Credit Commitments - Aging of Gross Loans, Broken out by Portfolio Segment and Class of Financing Receivable (Detail) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	$ 85,708	$ 199,927
Current	27,583,121	23,054,226
Loans Past Due 90 Days or More Still Accruing Interest	163	191
Total gross loans excluding impaired loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	53,196	156,278
Current	27,429,561	22,923,014
Loans Past Due 90 Days or More Still Accruing Interest	163	191
Impaired loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	32,512	43,649
Current	153,560	131,212
Loans Past Due 90 Days or More Still Accruing Interest	0	0
30 - 59 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	49,513	111,525
30 - 59 Days Past Due | Total gross loans excluding impaired loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	47,168	110,181
30 - 59 Days Past Due | Impaired loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	2,345	1,344
60 - 89 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	6,835	57,808
60 - 89 Days Past Due | Total gross loans excluding impaired loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	5,865	45,906
60 - 89 Days Past Due | Impaired loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	970	11,902
Greater Than 90 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	29,360	30,594
Greater Than 90 Days Past Due | Total gross loans excluding impaired loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	163	191
Greater Than 90 Days Past Due | Impaired loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	29,197	30,403
Commercial loans | Software/internet
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	22,025	20,924
Current	6,175,651	6,101,147
Loans Past Due 90 Days or More Still Accruing Interest	116	141
Commercial loans | Hardware
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	590	1,272
Current	1,298,215	1,163,278
Loans Past Due 90 Days or More Still Accruing Interest	0	50
Commercial loans | Private equity/venture capital
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	7,558	125,146
Current	13,357,777	9,835,317
Loans Past Due 90 Days or More Still Accruing Interest	2	0
Commercial loans | Life science/healthcare
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	10,562	4,581
Current	2,330,483	1,841,692
Loans Past Due 90 Days or More Still Accruing Interest	45	0
Commercial loans | Premium wine
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	1,594	418
Current	910,356	871,074
Loans Past Due 90 Days or More Still Accruing Interest	0	0
Commercial loans | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	367	445
Current	400,547	490,292
Loans Past Due 90 Days or More Still Accruing Interest	0	0
Commercial loans | Commercial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	42,696	152,786
Current	24,473,029	20,302,800
Loans Past Due 90 Days or More Still Accruing Interest	163	191
Commercial loans | 30 - 59 Days Past Due | Software/internet
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	17,067	14,257
Commercial loans | 30 - 59 Days Past Due | Hardware
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	491	1,145
Commercial loans | 30 - 59 Days Past Due | Private equity/venture capital
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	7,556	86,566
Commercial loans | 30 - 59 Days Past Due | Life science/healthcare
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	9,620	4,390
Commercial loans | 30 - 59 Days Past Due | Premium wine
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	1,594	418
Commercial loans | 30 - 59 Days Past Due | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	340	445
Commercial loans | 30 - 59 Days Past Due | Commercial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	36,668	107,221
Commercial loans | 60 - 89 Days Past Due | Software/internet
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	4,842	6,526
Commercial loans | 60 - 89 Days Past Due | Hardware
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	99	77
Commercial loans | 60 - 89 Days Past Due | Private equity/venture capital
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	0	38,580
Commercial loans | 60 - 89 Days Past Due | Life science/healthcare
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	897	191
Commercial loans | 60 - 89 Days Past Due | Premium wine
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	0	0
Commercial loans | 60 - 89 Days Past Due | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	27	0
Commercial loans | 60 - 89 Days Past Due | Commercial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	5,865	45,374
Commercial loans | Greater Than 90 Days Past Due | Software/internet
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	116	141
Commercial loans | Greater Than 90 Days Past Due | Hardware
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	0	50
Commercial loans | Greater Than 90 Days Past Due | Private equity/venture capital
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	2	0
Commercial loans | Greater Than 90 Days Past Due | Life science/healthcare
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	45	0
Commercial loans | Greater Than 90 Days Past Due | Premium wine
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	0	0
Commercial loans | Greater Than 90 Days Past Due | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	0	0
Commercial loans | Greater Than 90 Days Past Due | Commercial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	163	191
Consumer loans | Real estate secured loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	8,389	2,696
Current	2,540,950	2,292,980
Loans Past Due 90 Days or More Still Accruing Interest	0	0
Consumer loans | Other consumer loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	2,111	796
Current	415,582	327,234
Loans Past Due 90 Days or More Still Accruing Interest	0	0
Consumer loans | Consumer loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	10,500	3,492
Current	2,956,532	2,620,214
Loans Past Due 90 Days or More Still Accruing Interest	0	0
Consumer loans | 30 - 59 Days Past Due | Real estate secured loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	8,389	2,164
Consumer loans | 30 - 59 Days Past Due | Other consumer loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	2,111	796
Consumer loans | 30 - 59 Days Past Due | Consumer loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	10,500	2,960
Consumer loans | 60 - 89 Days Past Due | Real estate secured loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	0	532
Consumer loans | 60 - 89 Days Past Due | Other consumer loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	0	0
Consumer loans | 60 - 89 Days Past Due | Consumer loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	0	532
Consumer loans | Greater Than 90 Days Past Due | Real estate secured loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	0	0
Consumer loans | Greater Than 90 Days Past Due | Other consumer loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	0	0
Consumer loans | Greater Than 90 Days Past Due | Consumer loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	$ 0	$ 0

XML

Loans, Allowance for Loan Losses and Allowance for Unfunded Credit Commitments - Impaired Loans and Allowance for Loan Losses, Broken out by Portfolio Segment and Class of Financing Receivable (Detail) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Financing Receivable, Impaired [Line Items]
Impaired loans for which there is a related allowance for loan losses	$ 93,224	$ 88,246
Impaired loans for which there is no related allowance for loan losses	92,848	86,615
Total carrying value of impaired loans	186,072	174,861
Total unpaid principal of impaired loans	233,062	205,295
Commercial loans | Software/internet
Financing Receivable, Impaired [Line Items]
Impaired loans for which there is a related allowance for loan losses	64,197	49,645
Impaired loans for which there is no related allowance for loan losses	55,442	61,009
Total carrying value of impaired loans	119,639	110,654
Total unpaid principal of impaired loans	145,122	129,006
Commercial loans | Hardware
Financing Receivable, Impaired [Line Items]
Impaired loans for which there is a related allowance for loan losses	2,431	15,637
Impaired loans for which there is no related allowance for loan losses	17,249	20,713
Total carrying value of impaired loans	19,680	36,350
Total unpaid principal of impaired loans	31,804	41,721
Commercial loans | Private equity/venture capital
Financing Receivable, Impaired [Line Items]
Impaired loans for which there is a related allowance for loan losses	0	658
Impaired loans for which there is no related allowance for loan losses	3,700	0
Total carrying value of impaired loans	3,700	658
Total unpaid principal of impaired loans	3,700	984
Commercial loans | Life science/healthcare
Financing Receivable, Impaired [Line Items]
Impaired loans for which there is a related allowance for loan losses	22,300	20,521
Impaired loans for which there is no related allowance for loan losses	14,125	1,166
Total carrying value of impaired loans	36,425	21,687
Total unpaid principal of impaired loans	44,065	26,360
Commercial loans | Premium wine
Financing Receivable, Impaired [Line Items]
Impaired loans for which there is a related allowance for loan losses	306	0
Impaired loans for which there is no related allowance for loan losses	2,010	2,877
Total carrying value of impaired loans	2,316	2,877
Total unpaid principal of impaired loans	2,375	2,911
Commercial loans | Other
Financing Receivable, Impaired [Line Items]
Impaired loans for which there is a related allowance for loan losses	0	32
Impaired loans for which there is no related allowance for loan losses	0	0
Total carrying value of impaired loans	0	32
Total unpaid principal of impaired loans	0	165
Commercial loans | Commercial loans
Financing Receivable, Impaired [Line Items]
Impaired loans for which there is a related allowance for loan losses	89,234	86,493
Impaired loans for which there is no related allowance for loan losses	92,526	85,765
Total carrying value of impaired loans	181,760	172,258
Total unpaid principal of impaired loans	227,066	201,147
Consumer loans | Real estate secured loans
Financing Receivable, Impaired [Line Items]
Impaired loans for which there is a related allowance for loan losses	3,990	1,331
Impaired loans for which there is no related allowance for loan losses	322	850
Total carrying value of impaired loans	4,312	2,181
Total unpaid principal of impaired loans	5,996	3,712
Consumer loans | Other consumer loans
Financing Receivable, Impaired [Line Items]
Impaired loans for which there is a related allowance for loan losses	0	422
Impaired loans for which there is no related allowance for loan losses	0	0
Total carrying value of impaired loans	0	422
Total unpaid principal of impaired loans	0	436
Consumer loans | Consumer loans
Financing Receivable, Impaired [Line Items]
Impaired loans for which there is a related allowance for loan losses	3,990	1,753
Impaired loans for which there is no related allowance for loan losses	322	850
Total carrying value of impaired loans	4,312	2,603
Total unpaid principal of impaired loans	$ 5,996	$ 4,148

XML

Loans, Allowance for Loan Losses and Allowance for Unfunded Credit Commitments - Average Impaired Loans, Broken out by Portfolio Segment and Class of Financing Receivable (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Financing Receivable, Impaired [Line Items]
Average impaired loans	$ 193,254	$ 190,907	$ 182,398	$ 197,206
Interest income on impaired loans	1,421	1,273	1,981	2,371
Private equity/venture capital
Financing Receivable, Impaired [Line Items]
Average impaired loans	1,233	644		443
Commercial loans | Software/internet
Financing Receivable, Impaired [Line Items]
Average impaired loans	118,840	121,290	112,576	122,527
Interest income on impaired loans	607	767	991	1,646
Commercial loans | Hardware
Financing Receivable, Impaired [Line Items]
Average impaired loans	27,922	35,932	34,469	33,271
Interest income on impaired loans	410	419	499	518
Commercial loans | Private equity/venture capital
Financing Receivable, Impaired [Line Items]
Average impaired loans			536
Interest income on impaired loans	0	3	0	8
Commercial loans | Life science/healthcare
Financing Receivable, Impaired [Line Items]
Average impaired loans	38,545	25,796	27,671	33,590
Interest income on impaired loans	365	21	376	60
Commercial loans | Premium wine
Financing Receivable, Impaired [Line Items]
Average impaired loans	2,384	3,625	2,586	3,353
Interest income on impaired loans	35	39	103	115
Commercial loans | Other
Financing Receivable, Impaired [Line Items]
Average impaired loans	0	348	130	706
Interest income on impaired loans	0	0	0	0
Commercial loans | Commercial loans
Financing Receivable, Impaired [Line Items]
Average impaired loans	188,924	187,635	177,968	193,890
Interest income on impaired loans	1,417	1,249	1,969	2,347
Consumer loans | Real estate secured loans
Financing Receivable, Impaired [Line Items]
Average impaired loans	4,330	1,306	3,953	1,385
Interest income on impaired loans	4	24	12	24
Consumer loans | Other consumer loans
Financing Receivable, Impaired [Line Items]
Average impaired loans	0	1,966	477	1,931
Interest income on impaired loans	0	0	0	0
Consumer loans | Consumer loans
Financing Receivable, Impaired [Line Items]
Average impaired loans	4,330	3,272	4,430	3,316
Interest income on impaired loans	$ 4	$ 24	$ 12	$ 24

XML

Loans, Allowance for Loan Losses and Allowance for Unfunded Credit Commitments - Activity in Allowance for Loan Losses Broken out by Portfolio Segment (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	$ 286,709	$ 236,496	$ 255,024	$ 225,366
Charge-offs	(22,205)	(12,338)	(48,220)	(51,449)
Recoveries	2,164	1,828	5,878	6,155
Provision for (Reduction of) Loan Losses	19,436	22,409	74,088	67,273
Foreign Currency Translation Adjustments	(391)	615	(1,057)	1,665
Ending Balance	285,713	249,010	285,713	249,010
Allowance for Unfunded Credit Commitments [Roll Forward]
Allowance for unfunded credit commitments, beginning balance	54,104	47,000	51,770	45,265
Provision for unfunded credit commitments	(2,262)	1,113	138	2,789
Foreign currency translation adjustments	(34)	59	(100)	118
Ending balance	51,808	48,172	51,808	48,172
Commercial loans | Software/internet
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	102,648	92,937	96,104	97,388
Charge-offs	(6,304)	(8,791)	(26,377)	(36,172)
Recoveries	841	426	1,818	2,833
Provision for (Reduction of) Loan Losses	16,640	7,241	42,620	27,487
Foreign Currency Translation Adjustments	(335)	199	(675)	476
Ending Balance	113,490	92,012	113,490	92,012
Commercial loans | Hardware
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	34,695	27,800	27,614	31,166
Charge-offs	(12,697)	(2,453)	(16,111)	(6,726)
Recoveries	227	115	1,458	459
Provision for (Reduction of) Loan Losses	(1,763)	5,681	7,788	6,075
Foreign Currency Translation Adjustments	36	156	(251)	325
Ending Balance	20,498	31,299	20,498	31,299
Commercial loans | Private equity/venture capital
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	89,409	66,785	82,468	50,299
Charge-offs	0	0	(112)	0
Recoveries	3	0	13	0
Provision for (Reduction of) Loan Losses	1,632	10,142	8,200	26,111
Foreign Currency Translation Adjustments	(33)	279	442	796
Ending Balance	91,011	77,206	91,011	77,206
Commercial loans | Life science/healthcare
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	35,064	27,730	24,924	25,446
Charge-offs	(2,076)	(1,083)	(2,940)	(7,493)
Recoveries	189	63	245	107
Provision for (Reduction of) Loan Losses	2,322	(1,621)	13,829	6,906
Foreign Currency Translation Adjustments	(47)	(45)	(606)	78
Ending Balance	35,452	25,044	35,452	25,044
Commercial loans | Premium wine
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	3,438	3,133	3,532	4,115
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Provision for (Reduction of) Loan Losses	125	362	42	(567)
Foreign Currency Translation Adjustments	(3)	10	(14)	(43)
Ending Balance	3,560	3,505	3,560	3,505
Commercial loans | Other
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	2,896	4,135	3,941	4,768
Charge-offs	(1,128)	0	(2,391)	(1,047)
Recoveries	771	947	1,874	1,424
Provision for (Reduction of) Loan Losses	118	(931)	(775)	(1,005)
Foreign Currency Translation Adjustments	(2)	(26)	6	(15)
Ending Balance	2,655	4,125	2,655	4,125
Commercial loans | Commercial loans
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	268,150	222,520	238,583	213,182
Charge-offs	(22,205)	(12,327)	(47,931)	(51,438)
Recoveries	2,031	1,551	5,408	4,823
Provision for (Reduction of) Loan Losses	19,074	20,874	71,704	65,007
Foreign Currency Translation Adjustments	(384)	573	(1,098)	1,617
Ending Balance	266,666	233,191	266,666	233,191
Consumer loans | Consumer loans
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	18,559	13,976	16,441	12,184
Charge-offs	0	(11)	(289)	(11)
Recoveries	133	277	470	1,332
Provision for (Reduction of) Loan Losses	362	1,535	2,384	2,266
Foreign Currency Translation Adjustments	(7)	42	41	48
Ending Balance	$ 19,047	$ 15,819	$ 19,047	$ 15,819

XML

Loans, Allowance for Loan Losses and Allowance for Unfunded Credit Commitments - Allowance for Loan Losses Individually and Collectively Evaluated for Impairment (Detail) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Financing Receivable, Impaired [Line Items]
Individually evaluated for impairment, allowance for loan losses	$ 49,992	$ 41,793
Individually evaluated for impairment, recorded investment in loans	186,072	174,861
Collectively evaluated for impairment, allowance for loan losses	235,721	213,231
Collectively evaluated for impairment, allowance for loan losses	27,308,843	22,931,455
Commercial loans | Software/internet
Financing Receivable, Impaired [Line Items]
Individually evaluated for impairment, allowance for loan losses	36,856	23,088
Individually evaluated for impairment, recorded investment in loans	119,639	110,654
Collectively evaluated for impairment, allowance for loan losses	76,634	73,016
Collectively evaluated for impairment, allowance for loan losses	6,139,085	6,061,877
Commercial loans | Hardware
Financing Receivable, Impaired [Line Items]
Individually evaluated for impairment, allowance for loan losses	764	8,450
Individually evaluated for impairment, recorded investment in loans	19,680	36,350
Collectively evaluated for impairment, allowance for loan losses	19,734	19,164
Collectively evaluated for impairment, allowance for loan losses	1,287,029	1,157,249
Commercial loans | Private equity/venture capital
Financing Receivable, Impaired [Line Items]
Individually evaluated for impairment, allowance for loan losses	0	330
Individually evaluated for impairment, recorded investment in loans	3,700	658
Collectively evaluated for impairment, allowance for loan losses	91,011	82,138
Collectively evaluated for impairment, allowance for loan losses	13,356,811	9,951,719
Commercial loans | Life science/healthcare
Financing Receivable, Impaired [Line Items]
Individually evaluated for impairment, allowance for loan losses	11,951	9,315
Individually evaluated for impairment, recorded investment in loans	36,425	21,687
Collectively evaluated for impairment, allowance for loan losses	23,501	15,609
Collectively evaluated for impairment, allowance for loan losses	2,266,028	1,787,140
Commercial loans | Premium wine
Financing Receivable, Impaired [Line Items]
Individually evaluated for impairment, allowance for loan losses	3	0
Individually evaluated for impairment, recorded investment in loans	2,316	2,877
Collectively evaluated for impairment, allowance for loan losses	3,557	3,532
Collectively evaluated for impairment, allowance for loan losses	911,123	870,281
Commercial loans | Other
Financing Receivable, Impaired [Line Items]
Individually evaluated for impairment, allowance for loan losses	0	32
Individually evaluated for impairment, recorded investment in loans	0	32
Collectively evaluated for impairment, allowance for loan losses	2,655	3,909
Collectively evaluated for impairment, allowance for loan losses	378,455	476,306
Commercial loans | Commercial loans
Financing Receivable, Impaired [Line Items]
Individually evaluated for impairment, allowance for loan losses	49,574	41,215
Individually evaluated for impairment, recorded investment in loans	181,760	172,258
Collectively evaluated for impairment, allowance for loan losses	217,092	197,368
Collectively evaluated for impairment, allowance for loan losses	24,338,531	20,304,572
Consumer loans | Consumer loans
Financing Receivable, Impaired [Line Items]
Individually evaluated for impairment, allowance for loan losses	418	578
Individually evaluated for impairment, recorded investment in loans	4,312	2,603
Collectively evaluated for impairment, allowance for loan losses	18,629	15,863
Collectively evaluated for impairment, allowance for loan losses	$ 2,970,312	$ 2,626,883

XML

Loans, Allowance for Loan Losses and Allowance for Unfunded Credit Commitments - Credit Quality Indicators, Broken out by Portfolio Segment and Class of Financing Receivables (Detail) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Financing Receivable, Recorded Investment [Line Items]
Financing receivable	$ 27,668,829	$ 23,254,153
Pass
Financing Receivable, Recorded Investment [Line Items]
Financing receivable	26,601,154	22,357,492
Performing (Criticized)
Financing Receivable, Recorded Investment [Line Items]
Financing receivable	881,603	721,800
Performing Impaired (Criticized)
Financing Receivable, Recorded Investment [Line Items]
Financing receivable	70,910	55,602
Nonperforming Impaired (Nonaccrual)
Financing Receivable, Recorded Investment [Line Items]
Financing receivable	115,162	119,259
Commercial loans | Software/internet
Financing Receivable, Recorded Investment [Line Items]
Financing receivable	6,317,315	6,232,725
Commercial loans | Hardware
Financing Receivable, Recorded Investment [Line Items]
Financing receivable	1,318,485	1,200,900
Commercial loans | Private equity/venture capital
Financing Receivable, Recorded Investment [Line Items]
Financing receivable	13,369,035	9,961,121
Commercial loans | Life science/healthcare
Financing Receivable, Recorded Investment [Line Items]
Financing receivable	2,377,470	1,867,960
Commercial loans | Premium wine
Financing Receivable, Recorded Investment [Line Items]
Financing receivable	914,266	874,369
Commercial loans | Other
Financing Receivable, Recorded Investment [Line Items]
Financing receivable	400,914	490,769
Commercial loans | Commercial loans
Financing Receivable, Recorded Investment [Line Items]
Financing receivable	24,697,485	20,627,844
Commercial loans | Pass | Software/internet
Financing Receivable, Recorded Investment [Line Items]
Financing receivable	5,613,023	5,655,739
Commercial loans | Pass | Hardware
Financing Receivable, Recorded Investment [Line Items]
Financing receivable	1,245,532	1,112,574
Commercial loans | Pass | Private equity/venture capital
Financing Receivable, Recorded Investment [Line Items]
Financing receivable	13,362,294	9,955,082
Commercial loans | Pass | Life science/healthcare
Financing Receivable, Recorded Investment [Line Items]
Financing receivable	2,172,679	1,720,613
Commercial loans | Pass | Premium wine
Financing Receivable, Recorded Investment [Line Items]
Financing receivable	862,311	834,537
Commercial loans | Pass | Other
Financing Receivable, Recorded Investment [Line Items]
Financing receivable	398,263	469,721
Commercial loans | Pass | Commercial loans
Financing Receivable, Recorded Investment [Line Items]
Financing receivable	23,654,102	19,748,266
Commercial loans | Performing (Criticized) | Software/internet
Financing Receivable, Recorded Investment [Line Items]
Financing receivable	584,653	466,332
Commercial loans | Performing (Criticized) | Hardware
Financing Receivable, Recorded Investment [Line Items]
Financing receivable	53,273	51,976
Commercial loans | Performing (Criticized) | Private equity/venture capital
Financing Receivable, Recorded Investment [Line Items]
Financing receivable	3,041	5,381
Commercial loans | Performing (Criticized) | Life science/healthcare
Financing Receivable, Recorded Investment [Line Items]
Financing receivable	168,366	125,660
Commercial loans | Performing (Criticized) | Premium wine
Financing Receivable, Recorded Investment [Line Items]
Financing receivable	49,639	36,955
Commercial loans | Performing (Criticized) | Other
Financing Receivable, Recorded Investment [Line Items]
Financing receivable	2,651	21,016
Commercial loans | Performing (Criticized) | Commercial loans
Financing Receivable, Recorded Investment [Line Items]
Financing receivable	861,623	707,320
Commercial loans | Performing Impaired (Criticized) | Software/internet
Financing Receivable, Recorded Investment [Line Items]
Financing receivable	37,204	31,794
Commercial loans | Performing Impaired (Criticized) | Hardware
Financing Receivable, Recorded Investment [Line Items]
Financing receivable	17,249	20,165
Commercial loans | Performing Impaired (Criticized) | Private equity/venture capital
Financing Receivable, Recorded Investment [Line Items]
Financing receivable	0	0
Commercial loans | Performing Impaired (Criticized) | Life science/healthcare
Financing Receivable, Recorded Investment [Line Items]
Financing receivable	14,125	1,167
Commercial loans | Performing Impaired (Criticized) | Premium wine
Financing Receivable, Recorded Investment [Line Items]
Financing receivable	2,010	2,476
Commercial loans | Performing Impaired (Criticized) | Other
Financing Receivable, Recorded Investment [Line Items]
Financing receivable	0	0
Commercial loans | Performing Impaired (Criticized) | Commercial loans
Financing Receivable, Recorded Investment [Line Items]
Financing receivable	70,588	55,602
Commercial loans | Nonperforming Impaired (Nonaccrual) | Software/internet
Financing Receivable, Recorded Investment [Line Items]
Financing receivable	82,435	78,860
Commercial loans | Nonperforming Impaired (Nonaccrual) | Hardware
Financing Receivable, Recorded Investment [Line Items]
Financing receivable	2,431	16,185
Commercial loans | Nonperforming Impaired (Nonaccrual) | Private equity/venture capital
Financing Receivable, Recorded Investment [Line Items]
Financing receivable	3,700	658
Commercial loans | Nonperforming Impaired (Nonaccrual) | Life science/healthcare
Financing Receivable, Recorded Investment [Line Items]
Financing receivable	22,300	20,520
Commercial loans | Nonperforming Impaired (Nonaccrual) | Premium wine
Financing Receivable, Recorded Investment [Line Items]
Financing receivable	306	401
Commercial loans | Nonperforming Impaired (Nonaccrual) | Other
Financing Receivable, Recorded Investment [Line Items]
Financing receivable	0	32
Commercial loans | Nonperforming Impaired (Nonaccrual) | Commercial loans
Financing Receivable, Recorded Investment [Line Items]
Financing receivable	111,172	116,656
Consumer loans | Real estate secured loans
Financing Receivable, Recorded Investment [Line Items]
Financing receivable	2,553,651	2,297,857
Consumer loans | Other consumer loans
Financing Receivable, Recorded Investment [Line Items]
Financing receivable	417,693	328,452
Consumer loans | Consumer loans
Financing Receivable, Recorded Investment [Line Items]
Financing receivable	2,971,344	2,626,309
Consumer loans | Pass | Real estate secured loans
Financing Receivable, Recorded Investment [Line Items]
Financing receivable	2,529,708	2,282,375
Consumer loans | Pass | Other consumer loans
Financing Receivable, Recorded Investment [Line Items]
Financing receivable	417,344	326,851
Consumer loans | Pass | Consumer loans
Financing Receivable, Recorded Investment [Line Items]
Financing receivable	2,947,052	2,609,226
Consumer loans | Performing (Criticized) | Real estate secured loans
Financing Receivable, Recorded Investment [Line Items]
Financing receivable	19,631	13,301
Consumer loans | Performing (Criticized) | Other consumer loans
Financing Receivable, Recorded Investment [Line Items]
Financing receivable	349	1,179
Consumer loans | Performing (Criticized) | Consumer loans
Financing Receivable, Recorded Investment [Line Items]
Financing receivable	19,980	14,480
Consumer loans | Performing Impaired (Criticized) | Real estate secured loans
Financing Receivable, Recorded Investment [Line Items]
Financing receivable	322	0
Consumer loans | Performing Impaired (Criticized) | Other consumer loans
Financing Receivable, Recorded Investment [Line Items]
Financing receivable	0	0
Consumer loans | Performing Impaired (Criticized) | Consumer loans
Financing Receivable, Recorded Investment [Line Items]
Financing receivable	322	0
Consumer loans | Nonperforming Impaired (Nonaccrual) | Real estate secured loans
Financing Receivable, Recorded Investment [Line Items]
Financing receivable	3,990	2,181
Consumer loans | Nonperforming Impaired (Nonaccrual) | Other consumer loans
Financing Receivable, Recorded Investment [Line Items]
Financing receivable	0	422
Consumer loans | Nonperforming Impaired (Nonaccrual) | Consumer loans
Financing Receivable, Recorded Investment [Line Items]
Financing receivable	$ 3,990	$ 2,603

XML

Loans, Allowance for Loan Losses and Allowance for Unfunded Credit Commitments - Summary of Loans Modified in Troubled Debt Restructurings (TDRs) (Detail) $ in Thousands	9 Months Ended
	Sep. 30, 2018 USD ($) troubled_debt_restructuring	Dec. 31, 2017 USD ($)
Financing Receivable, Modifications [Line Items]
Number of troubled debt restructurings | troubled_debt_restructuring	20
Loans modified in TDRs	$ 85,805	$ 147,793
Unfunded commitments available for funding associated with TDRs	800
Commercial loans
Financing Receivable, Modifications [Line Items]
Loans modified in TDRs	85,483	147,370
Commercial loans | Software/internet
Financing Receivable, Modifications [Line Items]
Loans modified in TDRs	49,078	73,455
Commercial loans | Hardware
Financing Receivable, Modifications [Line Items]
Loans modified in TDRs	12,499	51,132
Commercial loans | Private equity/venture capital
Financing Receivable, Modifications [Line Items]
Loans modified in TDRs	0	350
Commercial loans | Life science/healthcare
Financing Receivable, Modifications [Line Items]
Loans modified in TDRs	20,942	19,235
Commercial loans | Premium wine
Financing Receivable, Modifications [Line Items]
Loans modified in TDRs	2,964	3,198
Consumer loans | Other
Financing Receivable, Modifications [Line Items]
Loans modified in TDRs	$ 322	$ 423

XML

Loans, Allowance for Loan Losses and Allowance for Unfunded Credit Commitments - Summary of Recorded Investment in Loans Modified in TDRs (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Financing Receivable, Modifications [Line Items]
Financing receivable modifications recorded investment modified during period	$ 10,398	$ 11,272	$ 32,647	$ 26,615
Loans classified as TDRs, charge-offs	13,000	0	21,500	2,600
Commercial loans
Financing Receivable, Modifications [Line Items]
Financing receivable modifications recorded investment modified during period	10,398	11,272	32,325	26,615
Commercial loans | Software/internet
Financing Receivable, Modifications [Line Items]
Financing receivable modifications recorded investment modified during period	0	10,876	14,069	26,034
Commercial loans | Hardware
Financing Receivable, Modifications [Line Items]
Financing receivable modifications recorded investment modified during period	10,398	396	12,347	396
Commercial loans | Life science/healthcare
Financing Receivable, Modifications [Line Items]
Financing receivable modifications recorded investment modified during period	0	0	5,909	0
Commercial loans | Premium wine
Financing Receivable, Modifications [Line Items]
Financing receivable modifications recorded investment modified during period	0	0	0	185
Consumer loans | Other
Financing Receivable, Modifications [Line Items]
Financing receivable modifications recorded investment modified during period	0	0	322	0
Payment deferrals granted
Financing Receivable, Modifications [Line Items]
Financing receivable modifications recorded investment modified during period	$ 10,400	$ 11,300	$ 32,600	$ 26,600

XML

Loans, Allowance for Loan Losses and Allowance for Unfunded Credit Commitments - Recorded Investment in Loans Modified in TDRs within Previous 12 months Subsequently Defaulted (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Financing Receivable, Modifications [Line Items]
TDRs modified within the previous 12 months that defaulted in the period	$ 26,920	$ 1,420	$ 54,256	$ 1,420
Commercial loans | Software/internet
Financing Receivable, Modifications [Line Items]
TDRs modified within the previous 12 months that defaulted in the period	18,911	1,234	41,568	1,234
Commercial loans | Hardware
Financing Receivable, Modifications [Line Items]
TDRs modified within the previous 12 months that defaulted in the period	2,100	0	5,549	0
Commercial loans | Life science/healthcare
Financing Receivable, Modifications [Line Items]
TDRs modified within the previous 12 months that defaulted in the period	5,909	0	7,139	0
Commercial loans | Premium wine
Financing Receivable, Modifications [Line Items]
TDRs modified within the previous 12 months that defaulted in the period	$ 0	$ 186	$ 0	$ 186

XML

Short-Term Borrowings and Long-Term Debt - Outstanding Short Term Borrowings and Long Term Debt (Detail) - USD ($)	9 Months Ended
	Sep. 30, 2018	Dec. 31, 2017
Debt Outstanding [Line Items]
Short-term borrowings	$ 2,631,252,000	$ 1,033,730,000
Long-term debt	$ 696,217,000	695,492,000
Senior Notes | 3.50% Senior Notes
Debt Outstanding [Line Items]
Maturity	Jan. 29, 2025
Principal value at period end	$ 350,000,000
Long-term debt	$ 347,554,000	$ 347,303,000
Interest rate on senior notes	3.50%	3.50%
Senior Notes | 5.375% Senior Notes
Debt Outstanding [Line Items]
Maturity	Sep. 15, 2020
Principal value at period end	$ 350,000,000
Long-term debt	$ 348,663,000	$ 348,189,000
Interest rate on senior notes	5.375%	5.375%
Short-term FHLB advances
Debt Outstanding [Line Items]
Principal value at period end	$ 2,250,000,000
Short-term borrowings	2,250,000,000	$ 700,000,000
Federal funds purchased
Debt Outstanding [Line Items]
Principal value at period end	0
Short-term borrowings	0	330,000,000
Securities sold under agreement to repurchase
Debt Outstanding [Line Items]
Principal value at period end	371,539,000
Short-term borrowings	371,539,000	0
Short-term borrowings
Debt Outstanding [Line Items]
Principal value at period end	9,713,000
Short-term borrowings	$ 9,713,000	$ 3,730,000

XML

Short-Term Borrowings and Long-Term Debt - Outstanding Short Term Borrowings and Long Term Debt (Additional Information) (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Debt Disclosure [Abstract]
Interest expense on debt	$ 12.0	$ 9.0	$ 29.1	$ 27.2
Weighted average interest rate on short-term borrowings	2.31%		2.31%		1.39%

XML

Short-Term Borrowings and Long-Term Debt - Available Lines of Credit (Detail) $ in Billions	Sep. 30, 2018 USD ($)
Short-term FHLB advances
Debt Disclosure [Line Items]
Unused borrowing capacity	$ 2.0
Federal Reserve Bank Advances
Debt Disclosure [Line Items]
Unused borrowing capacity	$ 1.0

XML

Derivative Financial Instruments - Total Notional or Contractual Amounts, Fair Value, Collateral and Net Exposure of Derivative Financial Instruments (Detail) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Derivative [Line Items]
Fair Value, Derivative Assets	$ 88,165	$ 108,389
Fair Value, Derivative Liabilities	91,321	108,581
Variation Margin	8,700
Variation Margin - Notional Amount	302,400
Foreign exchange forwards
Derivative [Line Items]
Fair Value, Derivative Assets	80,427	95,449
Fair Value, Derivative Liabilities	74,687	95,454
Client foreign currency options
Derivative [Line Items]
Fair Value, Derivative Assets	1,476	1,187
Fair Value, Derivative Liabilities	1,478	1,187
Client interest rate derivatives
Derivative [Line Items]
Fair Value, Derivative Assets	6,262	11,753
Fair Value, Derivative Liabilities	15,156	11,940
Derivatives not designated as hedging instruments
Derivative [Line Items]
Fair Value, Derivative Assets	235,132	232,152
Fair Value, Derivative Liabilities	91,321	108,581
Derivatives not designated as hedging instruments | Foreign exchange forwards | Other assets
Derivative [Line Items]
Derivative Assets, Notional or Contractual Amount	241,360	50,889
Fair Value, Derivative Assets	2,842	414
Derivatives not designated as hedging instruments | Foreign exchange forwards | Other liability
Derivative [Line Items]
Derivative Liabilities, Notional or Contractual Amount	397,153	425,055
Fair Value, Derivative Liabilities	4,370	5,201
Derivatives not designated as hedging instruments | Equity warrant assets | Other assets
Derivative [Line Items]
Derivative Assets, Notional or Contractual Amount	223,868	211,253
Fair Value, Derivative Assets	146,967	123,763
Derivatives not designated as hedging instruments | Client foreign exchange forwards | Other assets
Derivative [Line Items]
Derivative Assets, Notional or Contractual Amount	2,523,524	2,203,643
Fair Value, Derivative Assets	77,585	95,035
Derivatives not designated as hedging instruments | Client foreign exchange forwards | Other liability
Derivative [Line Items]
Derivative Liabilities, Notional or Contractual Amount	2,390,294	2,092,207
Fair Value, Derivative Liabilities	70,317	90,253
Derivatives not designated as hedging instruments | Client foreign currency options | Other assets
Derivative [Line Items]
Derivative Assets, Notional or Contractual Amount	91,125	102,678
Fair Value, Derivative Assets	1,476	1,187
Derivatives not designated as hedging instruments | Client foreign currency options | Other liability
Derivative [Line Items]
Derivative Liabilities, Notional or Contractual Amount	91,149	102,678
Fair Value, Derivative Liabilities	1,478	1,187
Derivatives not designated as hedging instruments | Client interest rate derivatives | Other assets
Derivative [Line Items]
Derivative Assets, Notional or Contractual Amount	937,808	726,984
Fair Value, Derivative Assets	6,262	11,753
Derivatives not designated as hedging instruments | Client interest rate derivatives | Other liability
Derivative [Line Items]
Derivative Liabilities, Notional or Contractual Amount	1,335,830	782,586
Fair Value, Derivative Liabilities	$ 15,156	$ 11,940

XML

Derivative Financial Instruments - Summary of Derivative Activity and Related Impact on Consolidated Statements of Income (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Interest rate risks | Derivatives designated as hedging instruments
Derivative Instruments, Gain (Loss) [Line Items]
Unrealized gains (losses) on derivatives	$ 0	$ 62	$ 0	$ 990
Interest rate risks | Derivatives designated as hedging instruments | Interest expense—borrowings
Derivative Instruments, Gain (Loss) [Line Items]
Unrealized gains (losses) on derivatives	0	62	0	997
Interest rate risks | Derivatives designated as hedging instruments | Other noninterest income
Derivative Instruments, Gain (Loss) [Line Items]
Unrealized gains (losses) on derivatives	0	0	0	(7)
Currency exchange risk | Derivatives not designated as hedging instruments
Derivative Instruments, Gain (Loss) [Line Items]
Unrealized gains (losses) on derivatives	410	11	(36)	916
Currency exchange risk | Derivatives not designated as hedging instruments | Revaluations of internal foreign currency instruments, net | Other noninterest income
Derivative Instruments, Gain (Loss) [Line Items]
Unrealized gains (losses) on derivatives	5,412	10,561	8,019	29,265
Currency exchange risk | Derivatives not designated as hedging instruments | Foreign exchange forward contracts, net | Other noninterest income
Derivative Instruments, Gain (Loss) [Line Items]
Unrealized gains (losses) on derivatives	(5,002)	(10,550)	(8,055)	(28,349)
Other derivative instruments | Derivatives not designated as hedging instruments
Derivative Instruments, Gain (Loss) [Line Items]
Unrealized gains (losses) on derivatives	386	(111)	1,021	539
Other derivative instruments | Derivatives not designated as hedging instruments | Other noninterest income
Derivative Instruments, Gain (Loss) [Line Items]
Unrealized gains (losses) on derivatives	222	(38)	643	(524)
Other derivative instruments | Derivatives not designated as hedging instruments | Revaluations of internal foreign currency instruments, net | Other noninterest income
Derivative Instruments, Gain (Loss) [Line Items]
Unrealized gains (losses) on derivatives	(1,187)	3,760	3,718	8,889
Other derivative instruments | Derivatives not designated as hedging instruments | Foreign exchange forward contracts, net | Other noninterest income
Derivative Instruments, Gain (Loss) [Line Items]
Unrealized gains (losses) on derivatives	1,573	(3,871)	(2,697)	(8,350)
Equity warrant assets
Derivative Instruments, Gain (Loss) [Line Items]
Unrealized gains (losses) on derivatives			24,462	29,666
Equity warrant assets | Derivatives not designated as hedging instruments | Gains on equity warrant assets, net
Derivative Instruments, Gain (Loss) [Line Items]
Unrealized gains (losses) on derivatives	$ 34,141	$ 24,922	$ 72,393	$ 42,432

XML

Derivative Financial Instruments - Balance Sheet Offsetting, Assets (Detail) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Derivative Assets
Gross Amounts of Recognized Assets	$ 88,165	$ 108,389
Gross Amounts offset in the Statement of Financial Position	0	0
Net Amounts of Assets Presented in the Statement of Financial Position	88,165	108,389
Financial Instruments (Collateral)	(33,576)	(26,754)
Cash Collateral Received	(9,713)	(3,730)
Net Amount	44,876	77,905
Reverse repurchase, securities borrowing, and similar arrangements
Gross Amounts of Recognized Assets	119,181	247,876
Gross Amounts offset in the Statement of Financial Position	0	0
Net Amounts of Assets Presented in the Statement of Financial Position	119,181	247,876
Financial Instruments (Collateral)	(119,181)	(247,876)
Cash Collateral Received	0	0
Net Amount	0	0
Total
Gross Amounts of Recognized Assets	207,346	356,265
Gross Amounts offset in the Statement of Financial Position	0	0
Net Amounts of Assets Presented in the Statement of Financial Position	207,346	356,265
Financial Instruments (Collateral)	(152,757)	(274,630)
Cash Collateral Received	(9,713)	(3,730)
Net Amount	44,876	77,905
Foreign exchange forwards
Derivative Assets
Gross Amounts of Recognized Assets	80,427	95,449
Gross Amounts offset in the Statement of Financial Position	0	0
Net Amounts of Assets Presented in the Statement of Financial Position	80,427	95,449
Financial Instruments (Collateral)	(29,400)	(14,570)
Cash Collateral Received	(6,816)	(3,616)
Net Amount	44,211	77,263
Client foreign currency options
Derivative Assets
Gross Amounts of Recognized Assets	1,476	1,187
Gross Amounts offset in the Statement of Financial Position	0	0
Net Amounts of Assets Presented in the Statement of Financial Position	1,476	1,187
Financial Instruments (Collateral)	(811)	(557)
Cash Collateral Received	0	0
Net Amount	665	630
Client interest rate derivatives
Derivative Assets
Gross Amounts of Recognized Assets	6,262	11,753
Gross Amounts offset in the Statement of Financial Position	0	0
Net Amounts of Assets Presented in the Statement of Financial Position	6,262	11,753
Financial Instruments (Collateral)	(3,365)	(11,627)
Cash Collateral Received	(2,897)	(114)
Net Amount	$ 0	$ 12

XML

Derivative Financial Instruments - Balance Sheet Offsetting, Liabilities (Detail) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Derivative Liabilities
Gross Amounts of Recognized Liabilities	$ 91,321	$ 108,581
Gross Amounts offset in the Statement of Financial Position	0	0
Net Amounts of Liabilities Presented in the Statement of Financial Position	91,321	108,581
Financial Instruments (Collateral)	(27,586)	(11,498)
Cash Collateral Pledged	(30,216)	(81,164)
Net Amount	33,519	15,919
Repurchase, securities lending, and similar arrangements
Securities Sold under Agreements to Repurchase, Gross	371,539	0
Securities Sold under Agreements to Repurchase, Asset	0	0
Securities Sold under Agreements to Repurchase	371,539	0
Financial Instruments (Collateral)	(147,757)	0
Cash Collateral Pledged	(750)	0
Net Amount	223,032	0
Total
Gross Amounts of Recognized Liabilities	462,860	108,581
Gross Amounts offset in the Statement of Financial Position	0	0
Net Amounts of Liabilities Presented in the Statement of Financial Position	462,860	108,581
Financial Instruments (Collateral)	(175,343)	(11,498)
Cash Collateral Pledged	(30,966)	(81,164)
Net Amount	256,551	15,919
Foreign exchange forwards
Derivative Liabilities
Gross Amounts of Recognized Liabilities	74,687	95,454
Gross Amounts offset in the Statement of Financial Position	0	0
Net Amounts of Liabilities Presented in the Statement of Financial Position	74,687	95,454
Financial Instruments (Collateral)	(22,038)	(10,997)
Cash Collateral Pledged	(20,036)	(69,110)
Net Amount	32,613	15,347
Client foreign currency options
Derivative Liabilities
Gross Amounts of Recognized Liabilities	1,478	1,187
Gross Amounts offset in the Statement of Financial Position	0	0
Net Amounts of Liabilities Presented in the Statement of Financial Position	1,478	1,187
Financial Instruments (Collateral)	(666)	(501)
Cash Collateral Pledged	0	(130)
Net Amount	812	556
Client interest rate derivatives
Derivative Liabilities
Gross Amounts of Recognized Liabilities	15,156	11,940
Gross Amounts offset in the Statement of Financial Position	0	0
Net Amounts of Liabilities Presented in the Statement of Financial Position	15,156	11,940
Financial Instruments (Collateral)	(4,882)	0
Cash Collateral Pledged	(10,180)	(11,924)
Net Amount	$ 94	$ 16

XML

Noninterest Income - Summary of Noninterest Income (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Other Income and Expenses [Abstract]
Gains on investment securities, net	$ 32,193	$ 15,238	$ 77,365	$ 48,838
Gains on equity warrant assets, net	34,141	24,922	72,393	42,432
Foreign exchange fees	32,656	29,671	100,560	82,026
Credit card fees	24,121	20,270	68,739	56,099
Deposit service charges	19,588	14,508	56,081	43,046
Client investment fees	36,265	15,563	88,592	37,571
Lending related fees	10,675	15,404	30,938	32,874
Letters of credit and standby letters of credit fees	8,409	7,306	24,938	20,951
Other	12,022	15,896	38,671	41,128
Total noninterest income	$ 210,070	$ 158,778	$ 558,277	$ 404,965

XML

Noninterest Income - Gains and Losses on Investments (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Other Income and Expenses [Abstract]
Total net gains on non-marketable and other equity securities	$ 32,193	$ 15,339	$ 77,365	$ 48,454
(Losses) gains on sales of available-for-sale securities, net	0	(101)	0	384
Gains on investment securities, net	$ 32,193	$ 15,238	$ 77,365	$ 48,838

XML

Noninterest Income - Gains and Losses on Derivatives (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Other Income and Expenses [Abstract]
Gains on exercises, net	$ 18,287	$ 7,449	$ 42,808	$ 22,482
Cancellations and expirations	(1,432)	(757)	(3,158)	(3,614)
Changes in fair value, net	17,286	18,230	32,743	23,564
Gains on equity warrant assets, net	$ 34,141	$ 24,922	$ 72,393	$ 42,432

XML

Noninterest Income - Foreign Exchange Fees (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	$ 130,437		$ 364,258
Revenue not from contract with customer	79,633		194,019
Foreign exchange fees	32,656	$ 29,671	100,560	$ 82,026
Spot contract commissions
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	30,041	27,700	92,791	73,707
Forward contract commissions
Disaggregation of Revenue [Line Items]
Revenue not from contract with customer	2,534	1,877	7,474	7,948
Option premium fees
Disaggregation of Revenue [Line Items]
Revenue not from contract with customer	$ 81	$ 94	$ 295	$ 371

XML

Noninterest Income - Credit Card Fees (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Disaggregation of Revenue [Line Items]
Card interchange fees, net	$ 18,849	$ 16,179	$ 54,547	$ 44,182
Revenue from contracts with customers	130,437		364,258
Revenue not from contract with customer	79,633		194,019
Total credit card fees	24,121	20,270	68,739	56,099
Merchant service fees
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	3,679	2,930	10,010	8,553
Card service fees
Disaggregation of Revenue [Line Items]
Revenue not from contract with customer	$ 1,593	$ 1,161	$ 4,182	$ 3,364

XML

Noninterest Income - Client Investment Fees (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	$ 130,437		$ 364,258
Sweep money market fees
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	21,105	$ 7,968	50,605	$ 18,838
Asset management fees
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	6,358	4,177	17,447	11,666
Repurchase agreement fees
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	8,802	3,418	20,540	7,067
Client investment fees
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	$ 36,265	$ 15,563	$ 88,592	$ 37,571

XML

Noninterest Income - Lending Related Fees (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]
Lending related fees	$ 10,675	$ 15,404	$ 30,938	$ 32,874
Unused commitment fees
Accounts, Notes, Loans and Financing Receivable [Line Items]
Lending related fees	8,410	12,334	24,994	25,923
Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Lending related fees	$ 2,265	$ 3,070	$ 5,944	$ 6,951

XML

Noninterest Income - Summary of Other Noninterest Income (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Trading Activity, Gains and Losses, Net [Line Items]
Revenue from contracts with customers	$ 130,437		$ 364,258
Net gains on revaluation of foreign currency instruments, net of foreign exchange forward contracts	796	$ (100)	985	$ 1,455
Other service revenue	5,747	10,798	20,542	23,770
Other	12,022	15,896	38,671	41,128
Fund management fees
Trading Activity, Gains and Losses, Net [Line Items]
Revenue from contracts with customers	$ 5,479	$ 5,198	$ 17,144	$ 15,903

XML

Noninterest Income - Disaggregation of Revenue (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	$ 130,437		$ 364,258
Revenues outside the scope of ASC 606	79,633		194,019
Noninterest income	210,070	$ 158,778	558,277	$ 404,965
Global Commercial Bank
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	102,677		292,953
Revenues outside the scope of ASC 606	11,446		33,761
Noninterest income	114,123		326,714
SVB Private Bank
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	630		1,693
Revenues outside the scope of ASC 606	(25)		(16)
Noninterest income	605		1,677
SVB Capital
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	5,479		17,144
Revenues outside the scope of ASC 606	18,944		64,688
Noninterest income	24,423		81,832
Other Income
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	21,651		52,468
Revenues outside the scope of ASC 606	49,268		95,586
Noninterest income	70,919		148,054
Spot contract commissions
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	30,041	27,700	92,791	73,707
Spot contract commissions | Global Commercial Bank
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	29,776		92,098
Spot contract commissions | SVB Private Bank
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	184		507
Spot contract commissions | SVB Capital
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0		0
Spot contract commissions | Other Income
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	81		186
Card interchange fees, gross
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	34,013		95,399
Card interchange fees, gross | Global Commercial Bank
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	33,905		95,088
Card interchange fees, gross | SVB Private Bank
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0		0
Card interchange fees, gross | SVB Capital
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0		0
Card interchange fees, gross | Other Income
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	108		311
Merchant service fees
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	3,679		10,010
Merchant service fees | Global Commercial Bank
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	3,677		10,008
Merchant service fees | SVB Private Bank
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	2		2
Merchant service fees | SVB Capital
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0		0
Merchant service fees | Other Income
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0		0
Deposit service charges
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	19,588		56,081
Deposit service charges | Global Commercial Bank
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	19,207		54,633
Deposit service charges | SVB Private Bank
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	24		83
Deposit service charges | SVB Capital
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0		0
Deposit service charges | Other Income
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	357		1,365
Client investment fees
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	36,265	15,563	88,592	37,571
Client investment fees | Global Commercial Bank
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	14,740		36,885
Client investment fees | SVB Private Bank
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	420		1,101
Client investment fees | SVB Capital
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0		0
Client investment fees | Other Income
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	21,105		50,606
Fund management fees
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	5,479	$ 5,198	17,144	$ 15,903
Fund management fees | Global Commercial Bank
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0		0
Fund management fees | SVB Private Bank
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0		0
Fund management fees | SVB Capital
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	5,479		17,144
Fund management fees | Other Income
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0		0
Correspondent bank rebates
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	1,372		4,241
Correspondent bank rebates | Global Commercial Bank
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	1,372		4,241
Correspondent bank rebates | SVB Private Bank
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0		0
Correspondent bank rebates | SVB Capital
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0		0
Correspondent bank rebates | Other Income
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	$ 0		$ 0

XML

Other Noninterest Expense - Summary of Other Noninterest Expense (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Other Income and Expenses [Abstract]
Lending and other client related processing costs	$ 5,698	$ 6,935	$ 16,301	$ 18,806
Data processing services	2,740	2,244	7,934	7,254
Telephone	2,269	2,518	7,025	7,892
Dues and publications	1,387	883	3,081	2,355
Postage and supplies	652	612	2,133	2,013
Other	5,393	4,872	15,171	16,350
Total other noninterest expense	$ 18,139	$ 18,064	$ 51,645	$ 54,670

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Segment Reporting - Additional Information (Detail)	9 Months Ended
	Sep. 30, 2018 Segment
Segment Reporting [Abstract]
Number of reportable segments	3

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Segment Reporting - Segment Information (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Segment Reporting Information [Line Items]
Net interest income	$ 493,222	$ 373,974	$ 1,379,528	$ 1,026,663
Provision for credit losses	(17,174)	(23,522)	(74,226)	(70,062)
Noninterest income	210,070	158,778	558,277	404,965
Noninterest expense	(309,445)	(257,761)	(880,601)	(746,640)
Income before income tax expense	376,673	251,469	982,978	614,926
Total average loans, net of unearned income	26,331,377	21,584,892	25,008,277	20,726,467
Total average assets	56,465,037	49,795,366	54,432,652	47,565,051
Total average deposits	49,092,240	44,042,842	47,734,362	42,061,635
Global Commercial Bank
Segment Reporting Information [Line Items]
Noninterest income	114,123		326,714
SVB Private Bank
Segment Reporting Information [Line Items]
Noninterest income	605		1,677
SVB Capital
Segment Reporting Information [Line Items]
Noninterest income	24,423		81,832
Operating segments | Global Commercial Bank
Segment Reporting Information [Line Items]
Net interest income	431,036	337,860	1,209,960	924,789
Provision for credit losses	(19,074)	(20,874)	(71,704)	(65,007)
Noninterest income	114,123	97,227	326,714	260,650
Noninterest expense	(206,487)	(178,306)	(591,434)	(528,807)
Income before income tax expense	319,598	235,907	873,536	591,625
Total average loans, net of unearned income	22,925,909	18,807,616	21,781,557	18,125,020
Total average assets	54,296,808	47,809,890	52,277,701	45,408,476
Total average deposits	47,037,693	42,376,024	45,701,317	40,398,413
Operating segments | SVB Private Bank
Segment Reporting Information [Line Items]
Net interest income	14,919	14,600	46,811	42,952
Provision for credit losses	(362)	(1,535)	(2,384)	(2,266)
Noninterest income	605	460	1,677	1,715
Noninterest expense	(6,760)	(4,706)	(18,729)	(12,675)
Income before income tax expense	8,402	8,819	27,375	29,726
Total average loans, net of unearned income	2,928,576	2,499,507	2,791,910	2,371,027
Total average assets	2,538,662	2,538,400	2,548,184	2,403,777
Total average deposits	1,505,746	1,231,390	1,519,200	1,289,990
Operating segments | SVB Capital
Segment Reporting Information [Line Items]
Net interest income	6	15	22	41
Provision for credit losses	0	0	0	0
Noninterest income	24,423	13,913	81,832	45,707
Noninterest expense	(6,469)	(4,873)	(17,182)	(14,537)
Income before income tax expense	17,960	9,055	64,672	31,211
Total average loans, net of unearned income	0	0	0	0
Total average assets	388,531	323,417	379,809	333,439
Total average deposits	0	0	0	0
Other Income
Segment Reporting Information [Line Items]
Net interest income	47,261	21,499	122,735	58,881
Provision for credit losses	2,262	(1,113)	(138)	(2,789)
Noninterest income	70,919	47,178	148,054	96,893
Noninterest expense	(89,729)	(69,876)	(253,256)	(190,621)
Income before income tax expense	30,713	(2,312)	17,395	(37,636)
Total average loans, net of unearned income	476,892	277,769	434,810	230,420
Total average assets	(758,964)	(876,341)	(773,042)	(580,641)
Total average deposits	$ 548,801	$ 435,428	$ 513,845	$ 373,232

XML

Segment Reporting - Segment Information (Additional Information) (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Operating segments | Global Commercial Bank
Segment Reporting Information [Line Items]
Depreciation and amortization	$ 5.5	$ 6.1	$ 16.6	$ 19.4

XML

Off-Balance Sheet Arrangements, Guarantees and Other Commitments - Summary Information Related to Commitments to Extend Credit (Excluding Letters of Credit) (Detail) - USD ($) $ in Thousands	Sep. 30, 2018	Jun. 30, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Dec. 31, 2016
Disclosure Off Balance Sheet Arrangements Guarantees And Other Commitments Additional Information [Abstract]
Fixed interest rate commitments	$ 1,768,904		$ 1,478,157
Variable interest rate commitments	14,698,357		14,034,169
Total loan commitments available for funding	16,467,261		15,512,326
Commercial and standby letters of credit	2,072,253		1,950,211
Total unfunded credit commitments	18,539,514		17,462,537
Commitments unavailable for funding	2,458,846		2,117,057
Reserve for unfunded commitments	$ 51,808	$ 54,104	$ 51,770	$ 48,172	$ 47,000	$ 45,265

XML

Off-Balance Sheet Arrangements, Guarantees and Other Commitments - Summary of Commercial and Standby Letters of Credit (Detail) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Guarantor Obligations [Line Items]
Expires In One Year or Less	$ 2,014,671
Expires After One Year	57,582
Total Amount Outstanding	2,072,253	$ 1,950,211
Maximum Amount of Future Payments	2,072,253
Financial standby letters of credit
Guarantor Obligations [Line Items]
Expires In One Year or Less	1,906,562
Expires After One Year	41,565
Total Amount Outstanding	1,948,127
Maximum Amount of Future Payments	1,948,127
Performance standby letters of credit
Guarantor Obligations [Line Items]
Expires In One Year or Less	84,402
Expires After One Year	15,666
Total Amount Outstanding	100,068
Maximum Amount of Future Payments	100,068
Commercial letters of credit
Guarantor Obligations [Line Items]
Expires In One Year or Less	23,707
Expires After One Year	351
Total Amount Outstanding	24,058
Maximum Amount of Future Payments	$ 24,058

XML

Off-Balance Sheet Arrangements, Guarantees and Other Commitments - Summary of Commercial and Standby Letters of Credit (Additional Information) (Detail) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2018	Jan. 01, 2018	Dec. 31, 2017
Commitments and Contingencies Disclosure [Line Items]
Deferred fees	$ 556	$ 736	$ 27,057
Standby Letter of Credit
Commitments and Contingencies Disclosure [Line Items]
Deferred fees	11,900		$ 12,400
Collateral in the form of cash	$ 1,100,000
Consolidated venture capital and private equity fund investments
Commitments and Contingencies Disclosure [Line Items]
Commitments to invest, period from the inception of the fund	10 years
Call unrestricted, percentage of committed capital	100.00%
Consolidated venture capital and private equity fund investments | Lower Limit
Commitments and Contingencies Disclosure [Line Items]
Expected commitment period to invest in venture capital and private equity funds (in years)	5 years
Consolidated venture capital and private equity fund investments | Upper Limit
Commitments and Contingencies Disclosure [Line Items]
Expected commitment period to invest in venture capital and private equity funds (in years)	7 years

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Off-Balance Sheet Arrangements, Guarantees and Other Commitments - Total Capital Commitments, Unfunded Capital Commitments, and Our Ownership in Each Fund (Detail) $ in Thousands	9 Months Ended
	Sep. 30, 2018 USD ($)
Venture Capital and Private Equity Fund Investments [Line Items]
SVBFG Unfunded Commitments	$ 5,775
Strategic Investors Fund, LP
Venture Capital and Private Equity Fund Investments [Line Items]
SVBFG Unfunded Commitments	1,338
Capital Preferred Return Fund, LP
Venture Capital and Private Equity Fund Investments [Line Items]
SVBFG Unfunded Commitments	2,658
Growth Partners, LP
Venture Capital and Private Equity Fund Investments [Line Items]
SVBFG Unfunded Commitments	1,779
Parent Company
Venture Capital and Private Equity Fund Investments [Line Items]
SVBFG Capital Commitments	450,067
SVBFG Unfunded Commitments	15,607
Parent Company | CP I, LP
Venture Capital and Private Equity Fund Investments [Line Items]
SVBFG Capital Commitments	6,000
SVBFG Unfunded Commitments	$ 270
SVBFG Ownership of each Fund	10.70%
Parent Company | CP II, LP
Venture Capital and Private Equity Fund Investments [Line Items]
SVBFG Capital Commitments	$ 1,200
SVBFG Unfunded Commitments	$ 162
SVBFG Ownership of each Fund	5.10%
Parent Company | Shanghai Yangpu Venture Capital Fund (LP)
Venture Capital and Private Equity Fund Investments [Line Items]
SVBFG Capital Commitments	$ 844
SVBFG Unfunded Commitments	$ 0
SVBFG Ownership of each Fund	6.80%
Parent Company | Strategic Investors Fund, LP
Venture Capital and Private Equity Fund Investments [Line Items]
SVBFG Capital Commitments	$ 15,300
SVBFG Unfunded Commitments	$ 688
SVBFG Ownership of each Fund	12.60%
Parent Company | Strategic Investors Fund II, LP
Venture Capital and Private Equity Fund Investments [Line Items]
SVBFG Capital Commitments	$ 15,000
SVBFG Unfunded Commitments	$ 1,050
SVBFG Ownership of each Fund	8.60%
Parent Company | Strategic Investors Fund III, LP
Venture Capital and Private Equity Fund Investments [Line Items]
SVBFG Capital Commitments	$ 15,000
SVBFG Unfunded Commitments	$ 1,275
SVBFG Ownership of each Fund	5.90%
Parent Company | Strategic Investors Fund IV, LP
Venture Capital and Private Equity Fund Investments [Line Items]
SVBFG Capital Commitments	$ 12,239
SVBFG Unfunded Commitments	$ 2,325
SVBFG Ownership of each Fund	5.00%
Parent Company | Strategic Investors Fund V funds
Venture Capital and Private Equity Fund Investments [Line Items]
SVBFG Capital Commitments	$ 515
SVBFG Unfunded Commitments	131
Parent Company | Capital Preferred Return Fund, LP
Venture Capital and Private Equity Fund Investments [Line Items]
SVBFG Capital Commitments	12,688
SVBFG Unfunded Commitments	$ 0
SVBFG Ownership of each Fund	20.00%
Parent Company | Growth Partners, LP
Venture Capital and Private Equity Fund Investments [Line Items]
SVBFG Capital Commitments	$ 24,670
SVBFG Unfunded Commitments	$ 1,340
SVBFG Ownership of each Fund	33.00%
Parent Company | Debt funds (equity method accounting)
Venture Capital and Private Equity Fund Investments [Line Items]
SVBFG Capital Commitments	$ 48,443
SVBFG Unfunded Commitments	0
Parent Company | Other fund investments
Venture Capital and Private Equity Fund Investments [Line Items]
SVBFG Capital Commitments	298,168
SVBFG Unfunded Commitments	$ 8,366

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Off-Balance Sheet Arrangements, Guarantees and Other Commitments - Total Capital Commitments, Unfunded Capital Commitments, and Our Ownership in Each Fund (Additional Information) (Detail) - Other fund investments - Consolidated venture capital and private equity fund investments	9 Months Ended
	Sep. 30, 2018 Investment
Venture Capital and Private Equity Fund Investments [Line Items]
Number of other funds with investment commitments	223
Upper Limit
Venture Capital and Private Equity Fund Investments [Line Items]
Percentage of ownership	5.00%

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Off-Balance Sheet Arrangements, Guarantees and Other Commitments - Remaining Unfunded Commitments to Venture Capital or Private Equity Funds by our Consolidated Managed Funds (Detail) $ in Thousands	9 Months Ended
	Sep. 30, 2018 USD ($)
Commitments and Contingencies Disclosure [Line Items]
SVBFG Unfunded Commitments	$ 5,775
Strategic Investors Fund, LP
Commitments and Contingencies Disclosure [Line Items]
SVBFG Unfunded Commitments	1,338
Capital Preferred Return Fund, LP
Commitments and Contingencies Disclosure [Line Items]
SVBFG Unfunded Commitments	2,658
Growth Partners, LP
Commitments and Contingencies Disclosure [Line Items]
SVBFG Unfunded Commitments	$ 1,779
Lower Limit | Consolidated venture capital and private equity fund investments
Commitments and Contingencies Disclosure [Line Items]
Expected commitment period to invest in venture capital and private equity funds (in years)	5 years
Upper Limit | Consolidated venture capital and private equity fund investments
Commitments and Contingencies Disclosure [Line Items]
Expected commitment period to invest in venture capital and private equity funds (in years)	7 years

XML

Income Taxes (Detail) $ in Millions	Sep. 30, 2018 USD ($)
Income Tax Disclosure [Abstract]
Unrecognized tax benefits	$ 13.2
Income tax reduction from recognized tax benefit	$ 10.2

XML

Fair Value of Financial Instruments - Assets and Liabilities Measured at Fair Value on a Recurring Basis (Detail) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2018	Dec. 31, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying Value	$ 9,087,609	$ 11,120,664
Fair Value, Derivative Assets	88,165	108,389
Fair Value, Derivative Liabilities	91,321	108,581
Client interest rate derivatives
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Derivative Assets	6,262	11,753
Fair Value, Derivative Liabilities	15,156	11,940
Derivatives not designated as hedging instruments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Derivative Assets	235,132	232,152
Fair Value, Derivative Liabilities	91,321	108,581
Derivatives not designated as hedging instruments | Equity warrant assets | Other assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Derivative Assets	146,967	123,763
Derivatives not designated as hedging instruments | Client interest rate derivatives | Other assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Derivative Assets	6,262	11,753
Derivatives not designated as hedging instruments | Client interest rate derivatives | Other liability
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Derivative Liabilities	15,156	11,940
U.S. treasury securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying Value	5,501,874	6,840,502
U.S. agency debentures
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying Value	1,346,672	1,567,128
Equity securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying Value		72,269
Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying Value	9,087,609	11,120,664
Total assets	9,688,621	11,481,237
Total liabilities	91,321	108,581
Recurring | Derivatives not designated as hedging instruments | Foreign exchange contract | Other assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Derivative Assets	81,903	96,636
Recurring | Derivatives not designated as hedging instruments | Foreign exchange contract | Other liability
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Derivative Liabilities	76,165	96,641
Recurring | Derivatives not designated as hedging instruments | Equity warrant assets | Other assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Derivative Assets	146,967	123,763
Recurring | Derivatives not designated as hedging instruments | Client interest rate derivatives | Other assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Derivative Assets	6,262	11,753
Recurring | Derivatives not designated as hedging instruments | Client interest rate derivatives | Other liability
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Derivative Liabilities	15,156	11,940
Recurring | Fair value accounting
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Non-marketable securities	365,880	128,421
Recurring | Venture capital and private equity fund investments | Fair value accounting
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Non-marketable securities	1,001	919
Recurring | Other securities | Fair value accounting
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Non-marketable securities	30,460	310
Recurring | U.S. treasury securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying Value	5,501,874	6,840,502
Recurring | U.S. agency debentures
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying Value	1,346,672	1,567,128
Recurring | Fixed rate | Agency-issued collateralized mortgage obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying Value	1,920,541	2,267,035
Recurring | Variable rate | Agency-issued collateralized mortgage obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying Value	318,522	373,730
Recurring | Equity securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying Value		72,269
Recurring | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying Value	5,501,874	6,840,660
Total assets	5,504,058	6,840,970
Total liabilities	0	0
Recurring | Level 1 | Noncontrolling Interests
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets		200
Recurring | Level 1 | Derivatives not designated as hedging instruments | Foreign exchange contract | Other assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Derivative Assets	0	0
Recurring | Level 1 | Derivatives not designated as hedging instruments | Foreign exchange contract | Other liability
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Derivative Liabilities	0	0
Recurring | Level 1 | Derivatives not designated as hedging instruments | Equity warrant assets | Other assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Derivative Assets	0	0
Recurring | Level 1 | Derivatives not designated as hedging instruments | Client interest rate derivatives | Other assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Derivative Assets	0	0
Recurring | Level 1 | Derivatives not designated as hedging instruments | Client interest rate derivatives | Other liability
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Derivative Liabilities	0	0
Recurring | Level 1 | Fair value accounting
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Non-marketable securities	2,184	310
Recurring | Level 1 | Venture capital and private equity fund investments | Fair value accounting
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Non-marketable securities	0	0
Recurring | Level 1 | Other securities | Fair value accounting
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Non-marketable securities	2,184	310
Recurring | Level 1 | U.S. treasury securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying Value	5,501,874	6,840,502
Recurring | Level 1 | U.S. agency debentures
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying Value	0	0
Recurring | Level 1 | Fixed rate | Agency-issued collateralized mortgage obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying Value	0	0
Recurring | Level 1 | Variable rate | Agency-issued collateralized mortgage obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying Value	0	0
Recurring | Level 1 | Equity securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying Value		158
Recurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying Value	3,585,735	4,280,004
Total assets	3,708,654	4,390,825
Total liabilities	91,321	108,581
Recurring | Level 2 | Derivatives not designated as hedging instruments | Foreign exchange contract | Other assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Derivative Assets	81,903	96,636
Recurring | Level 2 | Derivatives not designated as hedging instruments | Foreign exchange contract | Other liability
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Derivative Liabilities	76,165	96,641
Recurring | Level 2 | Derivatives not designated as hedging instruments | Equity warrant assets | Other assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Derivative Assets	6,478	2,432
Recurring | Level 2 | Derivatives not designated as hedging instruments | Client interest rate derivatives | Other assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Derivative Assets	6,262	11,753
Recurring | Level 2 | Derivatives not designated as hedging instruments | Client interest rate derivatives | Other liability
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Derivative Liabilities	15,156	11,940
Recurring | Level 2 | Fair value accounting
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Non-marketable securities	28,276	0
Recurring | Level 2 | Venture capital and private equity fund investments | Fair value accounting
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Non-marketable securities	0	0
Recurring | Level 2 | Other securities | Fair value accounting
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Non-marketable securities	28,276	0
Recurring | Level 2 | U.S. treasury securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying Value	0	0
Recurring | Level 2 | U.S. agency debentures
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying Value	1,346,672	1,567,128
Recurring | Level 2 | Fixed rate | Agency-issued collateralized mortgage obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying Value	1,920,541	2,267,035
Recurring | Level 2 | Variable rate | Agency-issued collateralized mortgage obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying Value	318,522	373,730
Recurring | Level 2 | Equity securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying Value		72,111
Recurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying Value	0	0
Total assets	141,490	122,250
Total liabilities	0	0
Recurring | Level 3 | Noncontrolling Interests
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets	900	800
Recurring | Level 3 | Derivatives not designated as hedging instruments | Foreign exchange contract | Other assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Derivative Assets	0	0
Recurring | Level 3 | Derivatives not designated as hedging instruments | Foreign exchange contract | Other liability
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Derivative Liabilities	0	0
Recurring | Level 3 | Derivatives not designated as hedging instruments | Equity warrant assets | Other assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Derivative Assets	140,489	121,331
Recurring | Level 3 | Derivatives not designated as hedging instruments | Client interest rate derivatives | Other assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Derivative Assets	0	0
Recurring | Level 3 | Derivatives not designated as hedging instruments | Client interest rate derivatives | Other liability
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Derivative Liabilities	0	0
Recurring | Level 3 | Fair value accounting
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Non-marketable securities	1,001	919
Recurring | Level 3 | Venture capital and private equity fund investments | Fair value accounting
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Non-marketable securities	1,001	919
Recurring | Level 3 | Other securities | Fair value accounting
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Non-marketable securities	0	0
Recurring | Level 3 | U.S. treasury securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying Value	0	0
Recurring | Level 3 | U.S. agency debentures
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying Value	0	0
Recurring | Level 3 | Fixed rate | Agency-issued collateralized mortgage obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying Value	0	0
Recurring | Level 3 | Variable rate | Agency-issued collateralized mortgage obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying Value	0	0
Recurring | Level 3 | Equity securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying Value		0
Recurring | Measured at net asset value | Venture capital and private equity fund investments | Fair value accounting
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Non-marketable securities	$ 334,419	$ 127,192
Upper Limit | Level 3 | Equity warrant asset, public portfolio
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Sales restrictions discount rate	20.00%

XML

Fair Value of Financial Instruments - Additional Information about Level 3 Assets Measured at Fair Value on a Recurring Basis (Detail) - Recurring - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning Balance	$ 138,754	$ 130,849	$ 122,250	$ 130,853
Total Realized and Unrealized Gains (Losses) Included in Income	32,237	24,354	69,179	41,406
Sales/Exits	(34,101)	(17,412)	(61,464)	(40,998)
Issuances	4,809	3,622	14,007	11,071
Distributions and Other Settlements	0	0	0	0
Transfers Out of Level 3	(209)	(441)	(2,482)	(1,360)
Ending Balance	141,490	140,972	141,490	140,972
Equity warrant assets | Other assets
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning Balance	137,753	128,952	121,331	128,813
Total Realized and Unrealized Gains (Losses) Included in Income	32,237	24,354	69,097	41,549
Sales/Exits	(34,101)	(17,412)	(61,464)	(40,998)
Issuances	4,809	3,622	14,007	11,071
Distributions and Other Settlements	0	0	0	0
Transfers Out of Level 3	(209)	(441)	(2,482)	(1,360)
Ending Balance	140,489	139,075	140,489	139,075
Non-marketable securities | Fair value accounting | Unconsolidated venture capital and private equity fund investments
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning Balance	1,001	1,897	919	2,040
Total Realized and Unrealized Gains (Losses) Included in Income	0	0	82	(143)
Sales/Exits	0	0	0	0
Issuances	0	0	0	0
Distributions and Other Settlements	0	0	0	0
Transfers Out of Level 3	0	0	0	0
Ending Balance	$ 1,001	$ 1,897	$ 1,001	$ 1,897

XML

Fair Value of Financial Instruments - Unrealized Gains Included in Earnings Attributable to Level 3 Assets Held (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Unrealized Gains (Losses) [Line Items]
Unrealized gains included in earnings attributable to Level 3 assets still held	$ 15,841	$ 17,827	$ 31,036	$ 23,591
Unrealized gains (losses) attributable to noncontrolling interests	0	0	73	(127)
Equity warrant assets | Other assets
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Unrealized Gains (Losses) [Line Items]
Unrealized gains included in earnings attributable to Level 3 assets still held	15,841	17,827	30,954	23,734
Unconsolidated venture capital and private equity fund investments | Non-marketable securities | Fair value accounting
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Unrealized Gains (Losses) [Line Items]
Unrealized gains included in earnings attributable to Level 3 assets still held	$ 0	$ 0	$ 82	$ (143)

XML

Fair Value of Financial Instruments - Quantitative Information About Significant Unobservable Inputs (Detail) - Level 3 $ in Thousands	Sep. 30, 2018 USD ($)	Dec. 31, 2017 USD ($)
Unconsolidated venture capital and private equity fund investments
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Fair value	$ 1,001	$ 919
Equity warrant asset, public portfolio
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Fair value	$ 1,805	$ 1,936
Equity warrant asset, public portfolio | Volatility
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Weighted Average	0.531	0.479
Equity warrant asset, public portfolio | Risk-Free interest rate
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Weighted Average	0.030	0.021
Equity warrant asset, public portfolio | Sales restrictions discount
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Weighted Average	0.141	0.155
Equity warrant assets, private portfolio
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Fair value	$ 138,684	$ 119,395
Equity warrant assets, private portfolio | Volatility
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Weighted Average	0.382	0.367
Equity warrant assets, private portfolio | Risk-Free interest rate
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Weighted Average	0.028	0.018
Equity warrant assets, private portfolio | Marketability discount
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Weighted Average	0.172	0.164
Equity warrant assets, private portfolio | Remaining life assumption
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Weighted Average	0.450	0.450

XML

Fair Value of Financial Instruments - Quantitative Information About Significant Unobservable Inputs (Additional Information) (Detail)	9 Months Ended
	Sep. 30, 2018
Equity warrant assets, private portfolio
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Weighted average contractual remaining term	6 years 2 months 12 days
Estimated remaining life	2 years 9 months 18 days
Lower Limit | Level 3 | Equity warrant asset, public portfolio
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Fair value inputs, sales restriction, period	3 months
Upper Limit | Level 3 | Equity warrant asset, public portfolio
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Fair value inputs, sales restriction, period	6 months
Sales restrictions discount | Lower Limit | Level 3 | Equity warrant asset, public portfolio
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Weighted Average	0.10
Sales restrictions discount | Upper Limit | Level 3 | Equity warrant asset, public portfolio
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Weighted Average	0.20

XML

Fair Value of Financial Instruments - Summary of Estimated Fair Values of Financial Instruments not Carried at Fair Value (Detail) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Held-to-maturity securities	$ 15,372,238	$ 12,548,280
Loans and Leases Receivable, Net Amount	27,209,202	22,851,292
Carrying Amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	3,819,141	2,923,075
Held-to-maturity securities	15,899,726	12,663,455
Non-marketable securities not measured at net asset value	134,646	120,019
Non-marketable securities measured at net asset value	134,017	228,399
FHLB and Federal Reserve Bank stock	102,378	60,020
Non-maturity deposits	48,518,701	44,206,929
Time deposits	77,410	47,146
Commitments to extend credit	0	0
Carrying Amount | Short-term borrowings
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Short-term borrowings	2,631,252	1,033,730
Carrying Amount | 3.50% Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Senior notes	347,554	347,303
Carrying Amount | 5.375% Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Senior notes	348,663	348,189
Estimated Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	3,819,141	2,923,075
Held-to-maturity securities	15,372,238	12,548,280
Non-marketable securities not measured at net asset value	134,646	126,345
Non-marketable securities measured at net asset value	134,017	331,496
FHLB and Federal Reserve Bank stock	102,378	60,020
Non-maturity deposits	48,518,701	44,206,929
Time deposits	77,047	46,885
Commitments to extend credit	22,857	22,208
Estimated Fair Value | Short-term borrowings
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Short-term borrowings	2,631,252	1,033,730
Estimated Fair Value | 3.50% Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Senior notes	338,370	352,058
Estimated Fair Value | 5.375% Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Senior notes	363,447	374,483
Estimated Fair Value | Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	3,819,141	2,923,075
Held-to-maturity securities	0	0
Non-marketable securities not measured at net asset value	0	0
FHLB and Federal Reserve Bank stock	0	0
Non-maturity deposits	48,518,701	44,206,929
Time deposits	0	0
Commitments to extend credit	0	0
Estimated Fair Value | Level 1 | Short-term borrowings
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Short-term borrowings	0	1,033,730
Estimated Fair Value | Level 1 | 3.50% Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Senior notes	0	0
Estimated Fair Value | Level 1 | 5.375% Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Senior notes	0	0
Estimated Fair Value | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	0	0
Held-to-maturity securities	15,372,238	12,548,280
Non-marketable securities not measured at net asset value	0	0
FHLB and Federal Reserve Bank stock	0	0
Non-maturity deposits	0	0
Time deposits	77,047	46,885
Commitments to extend credit	0	0
Estimated Fair Value | Level 2 | Short-term borrowings
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Short-term borrowings	2,631,252	0
Estimated Fair Value | Level 2 | 3.50% Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Senior notes	338,370	352,058
Estimated Fair Value | Level 2 | 5.375% Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Senior notes	363,447	374,483
Estimated Fair Value | Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	0	0
Held-to-maturity securities	0	0
Non-marketable securities not measured at net asset value	134,646	126,345
FHLB and Federal Reserve Bank stock	102,378	60,020
Non-maturity deposits	0	0
Time deposits	0	0
Commitments to extend credit	22,857	22,208
Estimated Fair Value | Level 3 | Short-term borrowings
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Short-term borrowings	0	0
Estimated Fair Value | Level 3 | 3.50% Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Senior notes	0	0
Estimated Fair Value | Level 3 | 5.375% Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Senior notes	0	0
Commercial loans | Carrying Amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans and Leases Receivable, Net Amount	24,253,625	20,238,247
Commercial loans | Estimated Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans and Leases Receivable, Net Amount	23,285,628	20,520,623
Commercial loans | Estimated Fair Value | Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans and Leases Receivable, Net Amount	0	0
Commercial loans | Estimated Fair Value | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans and Leases Receivable, Net Amount	0	0
Commercial loans | Estimated Fair Value | Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans and Leases Receivable, Net Amount	23,285,628	20,520,623
Consumer loans | Carrying Amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans and Leases Receivable, Net Amount	2,955,577	2,613,045
Consumer loans | Estimated Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans and Leases Receivable, Net Amount	2,809,916	2,593,538
Consumer loans | Estimated Fair Value | Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans and Leases Receivable, Net Amount	0	0
Consumer loans | Estimated Fair Value | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans and Leases Receivable, Net Amount	0	0
Consumer loans | Estimated Fair Value | Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans and Leases Receivable, Net Amount	$ 2,809,916	$ 2,593,538

XML

Fair Value of Financial Instruments - Summary of Estimated Fair Values of Investments and Remaining Unfunded Commitments for Each Major Category of Investments (Detail) $ in Thousands	Sep. 30, 2018 USD ($)
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Carrying Amount	$ 468,436
Fair Value	468,436
Unfunded Commitments	19,084
Venture capital and private equity fund investments | Non-marketable securities | Fair value accounting
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Carrying Amount	334,419
Fair Value	334,419
Unfunded Commitments	13,255
Venture capital and private equity fund investments | Non-marketable securities | Equity method accounting
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Carrying Amount	112,537
Fair Value	112,537
Unfunded Commitments	4,943
Debt funds | Non-marketable securities | Equity method accounting
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Carrying Amount	5,241
Fair Value	5,241
Unfunded Commitments	0
Other investments | Non-marketable securities | Equity method accounting
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Carrying Amount	16,239
Fair Value	16,239
Unfunded Commitments	$ 886

XML

Fair Value of Financial Instruments - Summary of Estimated Fair Values of Investments and Remaining Unfunded Commitments for Each Major Category of Investments (Textual) (Detail) $ in Thousands	9 Months Ended
	Sep. 30, 2018 USD ($)
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair value	$ 468,436
Unfunded commitments	19,084
Fair value accounting | Venture capital and private equity fund investments | Non-marketable securities
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair value	334,419
Unfunded commitments	$ 13,255
Fair value accounting | Venture capital and private equity fund investments | Non-marketable securities | Lower Limit
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Period distributions from fund investments to be received	10 years
Fair value accounting | Venture capital and private equity fund investments | Non-marketable securities | Upper Limit
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Period distributions from fund investments to be received	13 years
Fair value accounting | Venture capital and private equity fund investments | Non-marketable securities | Noncontrolling Interests
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair value	$ 93,000
Unfunded commitments	4,300
Equity method accounting | Venture capital and private equity fund investments | Non-marketable securities
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair value	112,537
Unfunded commitments	$ 4,943
Equity method accounting | Venture capital and private equity fund investments | Non-marketable securities | Lower Limit
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Period distributions from fund investments to be received	5 years
Equity method accounting | Venture capital and private equity fund investments | Non-marketable securities | Upper Limit
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Period distributions from fund investments to be received	8 years