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 March 31, 2025

or

☐ TRANSITION REPORT PURSUANT TO SECTION 13 OF 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from_________to ________

Commission File Number: 0-10200

________________________________________ 

________________________________________

SEI INVESTMENTS COMPANY

(Exact Name of Registrant as Specified in its Charter)

________________________________________ 

Pennsylvania	23-1707341
(State or Other Jurisdiction of Incorporation or Organization)	(I.R.S. Employer Identification No.)

1 Freedom Valley Drive, Oaks, Pennsylvania 19456-1100

(Address of Principal Executive Offices) (Zip Code)

(610) 676-1000

(Registrant’s Telephone Number, Including Area Code)

N/A

(Former Name, Former Address and Former Fiscal Year, if Changed Since Last Report) 

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

Title of each class	Trading Symbol	Name of each exchange on which registered
Common Stock, par value $0.01 per share	SEIC	The NASDAQ Stock Market LLC

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.

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 Act).  Yes  ☐    No  x

The number of shares outstanding of the registrant’s common stock, as of the close of business on April 10, 2025:

Common Stock, $0.01 par value 124,486,658 

SEI INVESTMENTS COMPANY

TABLE OF CONTENTS

PART I - FINANCIAL INFORMATION
		Page
Item 1.	Financial Statements.	2
	Consolidated Balance Sheets (Unaudited) -- March 31, 2025 and December 31, 2024	2
	Consolidated Statements of Operations (Unaudited) -- For the Three Months Ended March 31, 2025 and 2024	4
	Consolidated Statements of Comprehensive Income (Unaudited) -- For the Three Months Ended March 31, 2025 and 2024	5
	Consolidated Statements of Changes in Equity (Unaudited) -- For the Three Months Ended March 31, 2025 and 2024	6
	Consolidated Condensed Statements of Cash Flows (Unaudited) -- For the Three Months Ended March 31, 2025 and 2024	7
	Notes to Consolidated Financial Statements	9
Item 2.	Management's Discussion and Analysis of Financial Condition and Results of Operations.	27
Item 3.	Quantitative and Qualitative Disclosures About Market Risk.	42
Item 4.	Controls and Procedures.	43
PART II - OTHER INFORMATION
Item 1.	Legal Proceedings.	44
Item 1A.	Risk Factors.	44
Item 2.	Unregistered Sales of Equity Securities and Use of Proceeds.	44
Item 5.	Other Information	44
Item 6.	Exhibits.	45
	Signatures	46

1

PART I – FINANCIAL INFORMATION

Item 1. Financial Statements.

Consolidated Balance Sheets	SEI Investments Company
(unaudited)	and Subsidiaries
(Dollars in thousands, except per-share data)

	March 31, 2025		December 31, 2024
Assets
Current Assets:
Cash and cash equivalents	$	710,685	$	839,891
Restricted cash	302		302
Receivables from investment products	49,460		54,118
Receivables, net of allowance for doubtful accounts of $1,790 and $1,435	601,338		567,634
Securities owned	31,174		29,583
Assets held for sale	22,765		—
Other current assets	62,663		60,282
Total Current Assets	1,478,387		1,551,810
Property and Equipment, net of accumulated depreciation of $494,941 and $493,219	159,264		159,643
Operating Lease Right-of-Use Assets	25,225		28,905
Capitalized Software, net of accumulated amortization of $648,268 and $641,071	235,696		236,023
Investments	278,084		315,567
Goodwill	167,899		170,287
Intangible Assets, net of accumulated amortization of $37,833 and $55,835	66,484		77,370
Deferred Contract Costs	47,751		45,855
Deferred Income Taxes	55,209		51,984
Other Assets, net	52,043		47,162
Total Assets	$	2,566,042	$	2,684,606

The accompanying notes are an integral part of these consolidated financial statements.

2

Consolidated Balance Sheets	SEI Investments Company
(unaudited)	and Subsidiaries
(Dollars in thousands, except per-share data)

	March 31, 2025		December 31, 2024
Liabilities and Equity
Current Liabilities:
Accounts payable	$	11,168	$	13,081
Accrued liabilities	224,696		347,513
Current portion of long-term operating lease liabilities	7,359		7,900
Deferred revenue	13,824		12,019
Liabilities related to assets held for sale	4,383		—
Total Current Liabilities	261,430		380,513
Long-term Income Taxes Payable	803		803
Long-term Operating Lease Liabilities	20,971		24,235
Other Long-term Liabilities	24,986		26,943
Total Liabilities	308,190		432,494
Commitments and Contingencies
Shareholders' Equity:
Common stock, $0.01 par value, 750,000,000 shares authorized; 124,783,725 and 126,839,734 shares issued and outstanding	1,247		1,268
Capital in excess of par value	1,558,125		1,539,816
Retained earnings	737,020		758,003
Accumulated other comprehensive loss, net	(38,540)		(46,975)
Total Shareholders' Equity	2,257,852		2,252,112
Total Liabilities and Shareholders' Equity	$	2,566,042	$	2,684,606

The accompanying notes are an integral part of these consolidated financial statements.

3

Consolidated Statements of Operations	SEI Investments Company
(unaudited)	and Subsidiaries
(Dollars in thousands, except per-share data)

	Three Months Ended March 31,
	2025		2024
Revenues:
Asset management, administration and distribution fees	$	432,143	$	404,366
Information processing and software servicing fees	119,201		107,213
Total revenues	551,344		511,579
Expenses:
Subadvisory, distribution and other asset management costs	47,532		46,768
Software royalties and other information processing costs	9,081		8,471
Compensation, benefits and other personnel	190,784		192,916
Stock-based compensation	14,138		11,059
Consulting, outsourcing and professional fees	56,001		51,976
Data processing and computer related	39,319		37,160
Facilities, supplies and other costs	18,755		18,603
Amortization	10,710		10,386
Depreciation	7,927		8,389
Total expenses	394,247		385,728
Income from operations	157,097		125,851
Net gain from investments	493		2,256
Interest and dividend income	10,221		10,819
Interest expense	(185)		(139)
Equity in earnings of unconsolidated affiliate	28,747		31,643
Income before income taxes	196,373		170,430
Income taxes	44,856		39,030
Net income	$	151,517	$	131,400
Basic earnings per common share	$	1.20	$	1.00
Shares used to compute basic earnings per share	126,561		131,417
Diluted earnings per common share	$	1.17	$	0.99
Shares used to compute diluted earnings per share	129,450		132,745

The accompanying notes are an integral part of these consolidated financial statements.

4

Consolidated Statements of Comprehensive Income	SEI Investments Company
(unaudited)	and Subsidiaries
(Dollars in thousands)

	Three Months Ended March 31,
	2025		2024
Net income	$	151,517	$	131,400
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments	5,366		(2,923)
Unrealized gain (loss) on investments:
Unrealized gains (losses) during the period, net of income taxes of $(926) and $367	3,101		(1,231)
Reclassification adjustment for gains realized in net income, net of income taxes of $9 and $31	(32)		(105)
Total other comprehensive income (loss), net of tax	8,435		(4,259)
Comprehensive income	$	159,952	$	127,141

The accompanying notes are an integral part of these consolidated financial statements.

5

Consolidated Statements of Changes in Equity	SEI Investments Company
(unaudited)	and Subsidiaries
(Dollars in thousands, except per-share data)

	Shares of Common Stock	Common Stock		Capital In Excess of Par Value		Retained Earnings		Accumulated Other Comprehensive Loss		Total Equity
	For the Three Months Ended March 31, 2025
Balance, January 1, 2025	126,840	$	1,268	$	1,539,816	$	758,003	$	(46,975)	$	2,252,112
Net income	—	—		—		151,517		—		151,517
Other comprehensive income	—	—		—		—		8,435		8,435
Purchase and retirement of common stock	(2,501)	(25)		(20,319)		(172,500)		—		(192,844)
Issuance of common stock under employee stock purchase plan	19	—		1,335		—		—		1,335
Issuance of common stock under share-based award plans	426	4		23,155		—		—		23,159
Stock-based compensation	—	—		14,138		—		—		14,138
Balance, March 31, 2025	124,784	$	1,247	$	1,558,125	$	737,020	$	(38,540)	$	2,257,852

	Shares of Common Stock	Common Stock		Capital In Excess of Par Value		Retained Earnings		Accumulated Other Comprehensive Loss		Total Equity
	For the Three Months Ended March 31, 2024
Balance, January 1, 2024	131,178	$	1,312	$	1,404,962	$	762,586	$	(37,032)	$	2,131,828
Net income	—	—		—		131,400		—		131,400
Other comprehensive loss	—	—		—		—		(4,259)		(4,259)
Purchase and retirement of common stock	(808)	(8)		(5,877)		(50,116)		—		(56,001)
Issuance of common stock under employee stock purchase plan	22	—		1,196		—		—		1,196
Issuance of common stock under share-based award plans	937	9		43,822		—		—		43,831
Stock-based compensation	—	—		11,059		—		—		11,059
Balance, March 31, 2024	131,329	$	1,313	$	1,455,162	$	843,870	$	(41,291)	$	2,259,054

The accompanying notes are an integral part of these consolidated financial statements.

6

Consolidated Statements of Cash Flows	SEI Investments Company
(unaudited)	and Subsidiaries
(Dollars in thousands)

	Three Months Ended March 31,
	2025		2024
Cash flows from operating activities:
Net income	$	151,517	$	131,400
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	7,927		8,389
Amortization	10,710		10,386
Equity in earnings of unconsolidated affiliate	(28,747)		(31,643)
Distributions received from unconsolidated affiliate	34,860		33,147
Stock-based compensation	14,138		11,059
Provision for losses on receivables	420		502
Deferred income tax expense	(4,142)		(7,150)
Net gain from investments	(493)		(2,256)
Change in other long-term liabilities	508		850
Change in other assets	(1,213)		(7,800)
Contract costs capitalized, net of amortization	(2,291)		221
Contingent consideration fair value adjustments	(1,351)		—
Other	33		(2,068)
Change in current assets and liabilities:
Receivables from investment products	4,658		280
Receivables	(43,091)		(60,386)
Other current assets	(2,674)		1,268
Advances due from unconsolidated affiliate	54,513		51,986
Accounts payable	(1,913)		(328)
Accrued liabilities	(48,966)		(25,471)
Deferred revenue	2,077		(92)
Total adjustments	(5,037)		(19,106)
Net cash provided by operating activities	$	146,480	$	112,294

The accompanying notes are an integral part of these consolidated financial statements.

7

Consolidated Statements of Cash Flows	SEI Investments Company
(unaudited)	and Subsidiaries
(Dollars in thousands)

	Three Months Ended March 31,
	2025		2024
Cash flows from investing activities:
Additions to property and equipment	(8,666)		(13,072)
Additions to capitalized software	(7,362)		(6,277)
Purchases of marketable securities	(50,113)		(41,650)
Purchases of interest in limited partnerships	(566)		—
Prepayments and maturities of marketable securities	30,949		32,116
Proceeds from fixed asset dispositions	1,165		1,180
Other investing activities	(3,757)		(9,931)
Net cash used in investing activities	$	(38,350)	$	(37,634)
Cash flows from financing activities:
Purchase and retirement of common stock	(203,723)		(46,825)
Proceeds from issuance of common stock	24,494		45,027
Payment of dividends	(62,319)		(60,359)
Net cash used in financing activities	$	(241,548)	$	(62,157)
Effect of exchange rate changes on cash, cash equivalents and restricted cash	4,212		(572)
Net (decrease) increase in cash, cash equivalents and restricted cash	(129,206)		11,931
Cash, cash equivalents and restricted cash, beginning of period	840,193		834,998
Cash, cash equivalents and restricted cash, end of period	$	710,987	$	846,929

The accompanying notes are an integral part of these consolidated financial statements.

8

Notes to Consolidated Financial Statements	SEI Investments Company
(all figures are in thousands except share and per-share data)	and Subsidiaries

Note 1 – Summary of Significant Accounting Policies

Nature of Operations

SEI Investments Company (the Company), a Pennsylvania corporation, is a leading global provider of financial technology, operations, and asset management services within the financial services industry.

Investment processing platforms provide technologies and business process outsourcing services for wealth managers. These solutions include investment advisory, client relationship, and other technology-enabled capabilities for the front office; administrative and investment services for the middle office; and accounting and processing services for the back office. Revenues from investment processing services are recognized in Information processing and software servicing fees on the accompanying Consolidated Statements of Operations.

Investment operations platforms provide business process outsourcing services for investment managers and asset owners. These platforms support a broad range of traditional and alternative investments and provide technology-enabled information analytics and investor capabilities for the front office; administrative and investment services for the middle office; and fund administration and accounting services for the back office. Revenues from investment operations services are recognized in Asset management, administration and distribution fees on the accompanying Consolidated Statements of Operations.

Investment management platforms provide comprehensive solutions for managing personal and institutional wealth. These platforms include goals-based investment strategies; SEI-sponsored and third-party investment products, including mutual funds, ETFs, collective investment products, alternative investment portfolios and separately managed accounts (SMA); and other market-specific advice, technology and operational components. These services are offered to wealth managers as part of a complete goals-based investment program for their end-investors. For institutional investors, the Company provides an Outsourced Chief Investment Officer (OCIO) platform and Unbundled OCIO platform that include investment management programs, as well as advisory and administrative services. Revenues from investment management services are recognized in Asset management, administration and distribution fees on the accompanying Consolidated Statements of Operations.

Basis of Presentation

The accompanying Consolidated Financial Statements have been prepared in accordance with accounting principles generally accepted in the United States of America. Certain financial information and accompanying note disclosure normally included in the Company’s Annual Report on Form 10-K have been condensed or omitted. The interim financial information is unaudited but reflects all adjustments (consisting of only normal recurring adjustments) which are, in the opinion of management, necessary for a fair statement of financial position of the Company as of March 31, 2025, the results of operations for the three months ended March 31, 2025 and 2024, and cash flows for the three months ended March 31, 2025 and 2024. These interim Consolidated Financial Statements should be read in conjunction with the audited Consolidated Financial Statements and the Notes to the Consolidated Financial Statements included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2024.

There have been no significant changes in significant accounting policies during the three months ended March 31, 2025 as compared to the significant accounting policies described in the Company's Annual Report on Form 10-K for the year ended December 31, 2024.

Variable Interest Entities

The Company or its affiliates have created numerous investment products for its clients in various types of legal entity structures. The Company serves as the Manager, Administrator and Distributor for these investment products and may also serve as the Trustee for some of the investment products. The Company receives asset management, distribution, administration and custodial fees for these services. Clients are the equity investors and participate in proportion to their ownership percentage in the net income or loss and net capital gains or losses of the products, and, on liquidation, will participate in proportion to their ownership percentage in the remaining net assets of the products after satisfaction of outstanding liabilities. The Company has concluded that it is not the primary beneficiary of the entities and, therefore, is not required to consolidate any of the pooled investment vehicles for which it receives asset management, distribution, administration and custodial fees under the VIE model.

The Company is a party to expense limitation agreements with certain SEI-sponsored money market funds subject to Rule 2a-7 of the Investment Company Act of 1940 which establish a maximum level of ordinary operating expenses incurred by the fund in any fiscal year including, but not limited to, fees of the administrator or its affiliates. Under the terms of these

9

agreements, the Company waived $4,133 and $4,299 in fees during the three months ended March 31, 2025 and 2024, respectively.

Revenue Recognition

Revenue is recognized when the transfer of control of promised goods or services under the terms of a contract with customers are satisfied in an amount that reflects the consideration to which the Company expects to be entitled in exchange for those promised goods or services. Certain portions of the Company’s revenues involve a third party in providing goods or services to its customers. In such circumstances, the Company must determine whether the nature of its promise to the customer is to provide the underlying goods or services (the Company is the principal in the transaction and reports the transaction gross) or to arrange for a third party to provide the underlying goods or services (the entity is the agent in the transaction and reports the transaction net). See Note 13 for related disclosures regarding revenue recognition.

Cash and Cash Equivalents

The Company considers investment instruments purchased with an original maturity of three months or less to be cash equivalents. Cash and cash equivalents includes $261,392 and $341,311 at March 31, 2025 and December 31, 2024, respectively, invested in SEI-sponsored open-ended money market investment products. See Note 5 for information related to the Company's total investments in SEI-sponsored and non-SEI-sponsored money market investment products and commercial paper classified as cash equivalents.

Restricted Cash

Restricted cash includes $250 at March 31, 2025 and December 31, 2024 segregated for regulatory purposes related to trade-execution services conducted by SEI Investments (Europe) Limited. Restricted cash also includes $52 at March 31, 2025 and December 31, 2024 segregated in special reserve accounts for the benefit of customers of the Company’s broker-dealer subsidiary, SEI Investments Distribution Co. (SIDCO), in accordance with certain rules established by the Securities and Exchange Commission (SEC) for broker-dealers.

Capitalized Software

The Company capitalized $7,362 and $6,277 of software development costs during the three months ended March 31, 2025 and 2024, respectively, to further develop the SEI Wealth PlatformSM (SWP) and for the development of a new platform for the Investment Managers segment. The Company capitalized $4,375 and $3,795 of software development costs for significant enhancements to SWP during the three months ended March 31, 2025 and 2024, respectively. As of March 31, 2025, the net book value of SWP was $201,896, which includes $4,375 of capitalized software development costs in-progress associated with future releases. SWP has a weighted average remaining life of 8.0 years. Amortization expense for SWP was $7,099 and $6,757 during the three months ended March 31, 2025 and 2024, respectively.

The Company also capitalized $2,987 and $2,482 of software development costs during the three months ended March 31, 2025 and 2024, respectively, related to the development of a new platform for the Investment Managers segment. Capitalized software development costs in-progress associated with this platform were $33,800 as of March 31, 2025. The platform is not yet ready for use.

Earnings per Share

The calculations of basic and diluted earnings per share for the three months ended March 31, 2025 and 2024 are:

	Three Months Ended March 31,
	2025		2024
Net income	$	151,517	$	131,400
Shares used to compute basic earnings per common share	126,561,000		131,417,000
Dilutive effect of stock awards	2,889,000		1,328,000
Shares used to compute diluted earnings per common share	129,450,000		132,745,000
Basic earnings per common share	$	1.20	$	1.00
Diluted earnings per common share	$	1.17	$	0.99

During the three months ended March 31, 2025 and 2024, employee stock options to purchase 5,834,000 and 10,912,000 shares of common stock with an average exercise price of $65.95 and $61.05, respectively, were outstanding but not included in the computation of diluted earnings per common share. These options for the three month periods were not included in the computation of diluted earnings per common share because either the performance conditions have not been satisfied or would not have been satisfied if the reporting date was the end of the contingency period or the options'

10

exercise price was greater than the average market price of the Company’s common stock and the effect on diluted earnings per common share would have been anti-dilutive.

Assets Held for Sale

The Company accounts for assets held for sale in accordance with Accounting Standards Codification (ASC) Subtopic 360-10, Impairment or Disposal of Long-Lived Assets (ASC 360-10). The Company classifies long-lived assets or disposal groups as held for sale if the carrying amounts will be recovered principally through a sale rather than through continuing use. The criteria for held for sale classification is regarded as met only when the sale is highly probable and the asset or the disposal group is available for immediate sale in its present condition. Actions required to complete the sale should indicate that it is unlikely that significant changes to the sale will be made or that the sale will be withdrawn.

The Company initially measures assets classified as held for sale at the lower of its carrying value or fair value less any costs to sell and recognizes any loss in the period in which the held for sale criteria are met. Gains are not recognized until the date of sale. The Company ceases depreciation and amortization of long-lived assets upon their designation as held for sale and subsequently assesses fair value less any costs to sell at each reporting period until the asset is no longer classified as held for sale. See Note 14 for related disclosures regarding the Company's assets held for sale.

New Accounting Pronouncements

In December 2023, the FASB issued ASU 2023-09, Income Taxes (Topic 740): Improvement to Income Tax Disclosures (ASU 2023-09) to enhance the transparency and decision usefulness of income tax disclosures. ASU 2023-09 is effective for annual periods beginning after December 15, 2024 on a prospective basis. Early adoption is permitted. The Company does not expect ASU 2023-09 to have a significant impact on its annual consolidated financial statements and related disclosures.

In November 2024, the FASB issued ASU 2024-03, Income Statement—Reporting Comprehensive Income—Expense Disaggregation Disclosures (Subtopic 220-40): Disaggregation of Income Statement Expenses (ASU 2024-03) and in January 2025, the FASB issued ASU 2025-01, Income Statement—Reporting Comprehensive Income—Expense Disaggregation Disclosures (Subtopic 220-40): Clarifying the Effective Date (ASU 2025-01), which clarified the effective date of ASU 2024-03. This standard requires new disclosures to disaggregate prescribed natural expenses underlying any income statement caption. ASU 2024-03 is effective for annual periods beginning after December 15, 2026 on a prospective basis and interim periods beginning after December 15, 2027. Early adoption is permitted. The Company is currently evaluating the impact of adopting the guidance on its consolidated financial statements and related disclosures.

Reclassifications

Certain prior year amounts have been reclassified to conform to current year presentation.

Note 2 – Equity Method Investments

LSV Asset Management

The Company has an investment in LSV Asset Management (LSV), a registered investment advisor that provides investment advisory services primarily to institutions, including pension plans and investment companies. LSV is currently an investment sub-advisor for a limited number of SEI-sponsored investment products. The Company's partnership interest in LSV as of March 31, 2025 was 38.6%. The Company’s interest in the net assets of LSV is included in Investments on the accompanying Consolidated Balance Sheets and its interest in the earnings of LSV is reflected in Equity in earnings of unconsolidated affiliate on the accompanying Consolidated Statements of Operations.

At March 31, 2025 and December 31, 2024, the Company’s total investment in LSV was $53,673 and $114,299, respectively. The Company's investment includes advances provided to LSV related to their working capital accounts. The Company receives partnership distributions from LSV on a quarterly basis. The Company received partnership distributions from LSV of $34,860 and $33,147 in the three months ended March 31, 2025 and 2024, respectively. As such, the Company considers these distribution payments as returns on investment rather than returns of the Company's original investment in LSV and has therefore classified the associated cash inflows as an operating activity on the Consolidated Statements of Cash Flows.

The Company’s proportionate share in the earnings of LSV was $28,747 and $31,643 during the three months ended March 31, 2025 and 2024, respectively.

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These tables contain condensed financial information of LSV:

Condensed Statement of Operations	Three Months Ended March 31,
	2025		2024
Revenues	$	99,928	$	107,349
Net income	74,514		82,012

Condensed Balance Sheets	March 31, 2025		December 31, 2024
Current assets	$	112,698	$	170,055
Non-current assets	5,211		5,313
Total assets	$	117,909	$	175,368
Current liabilities	$	40,897	$	82,356
Non-current liabilities	5,217		5,382
Partners’ capital	71,795		87,630
Total liabilities and partners’ capital	$	117,909	$	175,368

Other Equity Method Investments

The Company's other equity method investment consist of an investment in a non-affiliated limited partnership in which the Company holds a more than minor interest. At March 31, 2025 and December 31, 2024, the Company’s total investment in the limited partnership was $9,483 and is included in Investments on the accompanying Consolidated Balance Sheets (See Note 5).

Note 3 – Composition of Certain Financial Statement Captions

Receivables

Receivables on the accompanying Consolidated Balance Sheets consist of: 

	March 31, 2025		December 31, 2024
Trade receivables	$	139,515	$	143,574
Fees earned, not billed	445,399		403,514
Other receivables	18,214		21,981
	603,128		569,069
Less: Allowance for doubtful accounts	(1,790)		(1,435)
	$	601,338	$	567,634

Fees earned, not billed represents receivables from contracts with customers earned but unbilled and results from timing differences between services provided and contractual billing schedules. These billing schedules generally provide for fees to be billed on a quarterly basis. In addition, certain fees earned from investment operations services are calculated based on assets under administration that have an extended valuation process. Billings to these clients occur once the asset valuation processes are completed.

Receivables from investment products on the accompanying Consolidated Balance Sheets primarily represent fees receivable for distribution, investment advisory, and administration services to various regulated investment companies and other investment products sponsored by SEI.

12

Property and Equipment

Property and Equipment on the accompanying Consolidated Balance Sheets consists of:

	March 31, 2025		December 31, 2024
Buildings	$	218,270	$	218,112
Equipment	198,260		196,792
Land	27,456		27,407
Purchased software	164,891		164,659
Furniture and fixtures	22,836		23,068
Leasehold improvements	21,826		22,491
Construction in progress	666		333
	654,205		652,862
Less: Accumulated depreciation	(494,941)		(493,219)
Property and Equipment, net	$	159,264	$	159,643

The Company recognized $7,927 and $8,389 in depreciation expense related to property and equipment for the three months ended March 31, 2025 and 2024, respectively.

Deferred Contract Costs

Deferred contract costs, which primarily consist of deferred sales commissions, were $47,751 and $45,855 as of March 31, 2025 and December 31, 2024, respectively. The Company deferred expenses related to contract costs of $5,410 and $2,391 during the three months ended March 31, 2025 and 2024, respectively. Amortization expense related to deferred contract costs were $3,119 and $2,612 during the three months ended March 31, 2025 and 2024, respectively. Amortization expense related to deferred contract costs is included in Compensation, benefits and other personnel on the accompanying Consolidated Statements of Operations. There were no material impairment losses in relation to deferred contract costs during the three months ended March 31, 2025.

Accrued Liabilities

Accrued liabilities on the accompanying Consolidated Balance Sheets consist of: 

	March 31, 2025		December 31, 2024
Accrued employee compensation	$	51,461	$	129,228
Accrued consulting, outsourcing and professional fees	37,899		32,082
Accrued sub-advisory, distribution and other asset management fees	52,591		53,727
Accrued dividend payable	1,558		63,877
Accrued income taxes	41,463		7,105
Other accrued liabilities	39,724		61,494
Total accrued liabilities	$	224,696	$	347,513

Note 4 – Fair Value Measurements

The fair value of the Company’s financial assets and liabilities is determined in accordance with the fair value hierarchy. The pricing policies and procedures applied to the Company's Level 1 and Level 2 financial assets during the three months ended March 31, 2025 were consistent with those as described in the Company's Annual Report on Form 10-K at December 31, 2024. The Company’s Level 1 financial assets consists mainly of investments in open-end and closed-end investment products that are quoted daily. Level 2 financial assets consist of Government National Mortgage Association (GNMA) mortgage-backed securities held by the Company's wholly-owned limited purpose federal thrift subsidiary, SEI Private Trust Company (SPTC), and Federal Home Loan Bank (FHLB) and other U.S. government agency short-term notes held by SIDCO. The financial assets held by SIDCO were purchased as part of a cash management program requiring only short term, top-tier investment grade government and corporate securities. The financial assets held by SPTC are debt securities issued by GNMA and are backed by the full faith and credit of the U.S. government. These securities were purchased for the sole purpose of satisfying applicable regulatory requirements and have maturity dates which range from 2027 to 2041. The Company's Level 3 financial liabilities at March 31, 2025 and December 31, 2024 consist entirely of the estimated fair value of the contingent considerations resulting from business acquisitions (See Note 12). The fair value of the contingent considerations were determined using a Monte-Carlo simulation model. There were

13

no transfers of financial assets between levels within the fair value hierarchy during the three months ended March 31, 2025.

The fair value of the Company's investments in funds sponsored by LSV is measured using the net asset value per share (NAV) as a practical expedient. The NAVs of the funds are calculated by the funds' independent custodian and are derived from the fair values of the underlying investments as of the reporting date. The investment funds sponsored by LSV allow for investor redemptions at the end of each calendar month. The investments measured using the NAV as a practical expedient have not been classified in the fair value hierarchy but are presented in the tables below to permit reconciliation to the amounts presented on the accompanying Consolidated Balance Sheets.

The fair value of certain financial assets of the Company was determined using the following inputs:

	At March 31, 2025
	Level 1		Level 2		Level 3		NAV as a Practical Expedient		Total
Assets
Equity securities	$	41,533	$	—	$	—	$	—	$	41,533
Available-for-sale debt securities	—		164,681		—		—		164,681
Securities owned	—		31,174		—		—		31,174
Investment funds sponsored by LSV	—		—		—		8,148		8,148
Investments in limited partnership funds	—		—		—		566		566
Total assets measured at fair value	$	41,533	$	195,855	$	—	$	8,714	$	246,102
Liabilities
Contingent considerations	$	—	$	—	$	11,888	$	—	$	11,888
Total liabilities measured at fair value	$	—	$	—	$	11,888	$	—	$	11,888

	At December 31, 2024
	Level 1		Level 2		Level 3		NAV as a Practical Expedient		Total
Assets
Equity securities	$	40,530	$	—	$	—	$	—	$	40,530
Available-for-sale debt securities	—		143,126		—		—		143,126
Securities owned	—		29,583		—		—		29,583
Investment funds sponsored by LSV	—		—		—		8,129		8,129
Total assets measured at fair value	$	40,530	$	172,709	$	—	$	8,129	$	221,368
Liabilities
Contingent considerations	$	—	$	—	$	14,355	$	—	$	14,355
Total liabilities measured at fair value	$	—	$	—	$	14,355	$	—	$	14,355

Note 5 – Investments and Other Marketable Securities

Investments on the accompanying Consolidated Balance Sheets consist of:

	March 31, 2025		December 31, 2024
Available for sale and equity securities	$	206,214	$	183,656
Investments in affiliated funds	8,148		8,129
Investments in limited partnership funds	566		—
Equity method investments (See Note 2)	63,156		123,782
Total	$	278,084	$	315,567

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Available For Sale and Equity Securities

Available for sale and equity securities consist of: 

	At March 31, 2025
	Cost Amount		Gross Unrealized Gains		Gross Unrealized (Losses)		Fair Value
Available-for-sale debt securities	$	171,780	$	—	$	(7,099)	$	164,681
SEI-sponsored investment products	33,569		1,944		—		35,513
Equities and other investment products	5,842		178		—		6,020
	$	211,191	$	2,122	$	(7,099)	$	206,214

	At December 31, 2024
	Cost Amount		Gross Unrealized Gains		Gross Unrealized (Losses)		Fair Value
Available-for-sale debt securities	$	154,211	$	—	$	(11,085)	$	143,126
SEI-sponsored investment products	33,029		1,615		—		34,644
Equities and other investment products	5,554		332		—		5,886
	$	192,794	$	1,947	$	(11,085)	$	183,656

Net unrealized losses at March 31, 2025 of available-for-sale debt securities were $5,467 (net of income tax benefit of $1,632). Net unrealized losses at December 31, 2024 of available-for-sale debt securities were $8,536 (net of income tax benefit of $2,549). These unrealized losses are associated with the Company’s investments in mortgage-backed securities issued by GNMA and were caused by interest rate increases (See Note 4). The contractual cash flows of these securities are guaranteed by an agency of the U.S. government. Accordingly, it is expected that the securities would not be settled at a price less than the amortized cost bases of the Company's investments. The Company does not intend to sell the investments and it is not likely that the Company will be required to sell the investments before recovery of their amortized cost bases. These net unrealized losses are reported as a separate component of Accumulated other comprehensive loss on the accompanying Consolidated Balance Sheets.

The following tables provide the scheduled maturities of the Company's available-for-sale debt securities:

	At March 31, 2025
	Cost		Fair Value
Within one year	$	—	$	—
After one year through five years	3,602		3,285
After 5 years through 10 years	19,218		17,698
After 10 years	148,960		143,698
	$	171,780	$	164,681

	At December 31, 2024
	Cost		Fair Value
Within one year	$	—	$	—
After one year through five years	4,132		3,763
After 5 years through 10 years	20,323		18,429
After 10 years	129,756		120,934
	$	154,211	$	143,126

There were no material realized gains or losses from available-for-sale debt securities during the three months ended March 31, 2025 and 2024, respectively.

There were gross realized gains of $303 and $595 from investment products and equities during the three months ended March 31, 2025 and 2024, respectively. There were no material gross realized losses from investment products and equities during the three months ended March 31, 2025 and 2024. Gains and losses from investment products and equities are reflected in Net gain from investments on the accompanying Consolidated Statements of Operations.

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Investments in Affiliated Funds

The Company has an investment in funds sponsored by LSV. The Company records this investment at fair value. Unrealized gains and losses from the change in fair value of these funds are recognized in Net gain from investments on the accompanying Consolidated Statements of Operations.

The Company's investment in the funds had a fair value of $8,148 and $8,129 at March 31, 2025 and December 31, 2024, respectively. The Company recognized unrealized gains of $19 and $833 during the three months ended March 31, 2025 and 2024, respectively, from the change in fair value of the funds.

Securities Owned

The Company’s broker-dealer subsidiary, SIDCO, has investments in U.S. government agency securities with maturity dates less than one year. These investments are reflected as Securities owned on the accompanying Consolidated Balance Sheets. Due to specialized accounting practices applicable to investments by broker-dealers, the securities are reported at fair value and changes in fair value are recorded in current period earnings. The securities had a fair value of $31,174 and $29,583 at March 31, 2025 and December 31, 2024, respectively. There were no material net gains or losses related to the securities during the three months ended March 31, 2025 and 2024.

Cash Equivalents

Investments in SEI-sponsored and non-SEI-sponsored money market funds and commercial paper classified as cash equivalents had a fair value of $437,281 and $541,635 at March 31, 2025 and December 31, 2024, respectively. There were no material unrealized or realized gains or losses from these investments during the three months ended March 31, 2025 and 2024. Investments in money market funds and commercial paper are Level 1 assets.

Note 6 – Line of Credit

The Company has a five-year $325,000 Credit Agreement (the Credit Facility) with Wells Fargo Bank, N.A., and a syndicate of other lenders. The Credit Facility is scheduled to expire in April 2026, at which time any aggregate principal amount of loans outstanding becomes payable in full. Any borrowings made under the Credit Facility will accrue interest at rates that, at the Company's option, are based on a base rate (the Base Rate) plus a premium that can range from 0.25% to 1.00% or the Adjusted Term Secured Overnight Financing Rate (SOFR) plus a premium that can range from 1.25% to 2.00% depending on the Company’s Leverage Ratio (a ratio of consolidated indebtedness to consolidated EBITDA for the four preceding fiscal quarters, all as defined in the related agreement). The Base Rate is defined as the highest of a) the Prime Rate, b) the Federal Funds Rate plus 0.50% and c) the Adjusted Term SOFR for a one-month tenor in effect on such day plus 1.00%.

The Company also pays quarterly commitment fees based on the unused portion of the Credit Facility. The quarterly fees for the Credit Facility can range from 0.15% of the amount of the unused portion to 0.30%, depending on the Company’s Leverage Ratio. Certain wholly-owned subsidiaries of the Company have guaranteed the obligations of the Company under the agreement. The aggregate amount of the Credit Facility may be increased by an additional $100,000 under certain conditions set forth in the agreement. The Company may issue up to $15,000 in letters of credit under the terms of the Credit Facility. The Company pays a periodic commission fee of 1.25% plus an issuance fee of 0.20% of the aggregate face amount of the outstanding letters of credit issued under the Credit Facility.

The Credit Facility contains covenants with restrictions on the ability of the Company to do transactions with affiliates other than wholly-owned subsidiaries or to incur liens or certain types of indebtedness as defined in the agreement. In the event of a default under the Credit Facility, the Company would also be restricted from paying dividends on, or repurchasing, its common stock without the approval of the lenders. Upon the occurrence of certain financial or economic events, significant corporate events, or certain other events of default constituting an event of default under the Credit Facility, all loans outstanding may be declared immediately due and payable and all commitments under the agreement may be terminated.

The Company was in compliance with all covenants of the Credit Facility during the three months ended March 31, 2025. As of April 10, 2025, the Company had outstanding letters of credit of $4,866 under the Credit Facility. The amount of the Credit Facility that is available for general corporate purposes as of April 10, 2025 was $320,134.

Note 7 – Shareholders’ Equity

Stock-Based Compensation

The Company has non-qualified stock options and restricted stock units (RSUs) outstanding under its equity compensation plans. The Company recognized stock-based compensation expense in its Consolidated Financial Statements in the three months ended March 31, 2025 and 2024, respectively, as follows: 

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	Three Months Ended March 31,
	2025		2024
Stock-based compensation expense	$	14,138	$	11,059
Less: Deferred tax benefit	(2,623)		(2,213)
Stock-based compensation expense, net of tax	$	11,515	$	8,846

The vesting of the Company's RSUs are time-based and are not based on the achievement of performance targets. The majority of the Company's RSUs will vest on the third anniversary of the issuance date. All outstanding stock options have performance-based vesting provisions that tie the vesting of stock options to the Company’s financial performance which are established at the time of grant, as well as a service condition which requires a minimum waiting period from the date of grant. The performance targets are measured annually on December 31. The amount of stock-based compensation expense recognized in the period is based upon management’s estimate of when the financial vesting targets may be achieved. Any change in management’s estimate could result in the remaining amount of stock-based compensation expense to be accelerated, spread out over a longer period, or reversed. This may cause volatility in the recognition of stock-based compensation expense in future periods and could materially affect the Company’s earnings.

As of March 31, 2025, there was approximately $105,462 of unrecognized compensation cost remaining related to unvested employee stock options and restricted stock units that management expects will vest and is being amortized.

The Company issues new common shares associated with the exercise of stock options. The total intrinsic value of options exercised during the three months ended March 31, 2025 was $9,376. The total options exercisable as of March 31, 2025 had an intrinsic value of $153,442. The total intrinsic value for options exercisable is calculated as the difference between the market value of the Company’s common stock as of March 31, 2025 and the weighted average exercise price of the options. The market value of the Company’s common stock as of March 31, 2025 was $77.63 as reported by the Nasdaq Stock Market, LLC. The weighted average exercise price of the options exercisable as of March 31, 2025 was $59.00. Total options that were outstanding as of March 31, 2025 were 14,937,000. Total options that were exercisable as of March 31, 2025 were 8,235,000.

Common Stock Buyback

The Company’s Board of Directors, under multiple authorizations, has authorized the repurchase of common stock on the open market or through private transactions. The Company purchased 2,501,000 shares at a total cost of $192,844 during the three months ended March 31, 2025, which reduced the total shares outstanding of common stock. The cost of stock purchases during the period includes the cost of excise taxes applicable to stock repurchases and certain transactions that settled in the following quarter. On March 18, 2025, the Company's Board of Directors approved an increase in the stock repurchase program by an additional $500,000. As of March 31, 2025, the Company had approximately $476,757 of authorization remaining for the purchase of common stock under the program.

The Company immediately retires its common stock when purchased. Upon retirement, the Company reduces Capital in excess of par value for the average capital per share outstanding and the remainder is charged against Retained earnings. If the Company reduces its Retained earnings to zero, any subsequent purchases of common stock will be charged entirely to Capital in excess of par value.

Note 8 – Accumulated Other Comprehensive Loss

The components of Accumulated other comprehensive loss, net of tax, are as follows: 

	Foreign Currency Translation Adjustments		Unrealized Gains (Losses) on Investments		Accumulated Other Comprehensive Loss
Balance, January 1, 2025	$	(38,439)	$	(8,536)	$	(46,975)
Other comprehensive income before reclassifications	5,366		3,101		8,467
Amounts reclassified from accumulated other comprehensive loss	—		(32)		(32)
Net current-period other comprehensive income	5,366		3,069		8,435
Balance, March 31, 2025	$	(33,073)	$	(5,467)	$	(38,540)

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Note 9 – Business Segment Information

The Company's business segments are generally organized around its target markets. The Company’s reportable business segments are:

Investment Managers – Provides an outsourced investment management operating platform to alternative and traditional asset managers, fund companies, and sovereign wealth funds;

Private Banks – Provides outsourced investment processing and investment management platforms to banks and trust institutions, independent wealth advisers, and financial advisors worldwide;

Investment Advisors – Provides investment management and investment processing platforms to affluent investors through a network of independent registered investment advisors, financial planners, and other investment professionals in the United States;

Institutional Investors – Provides Outsourced Chief Investment Officer solutions, including investment management and administrative outsourcing platforms to retirement plan sponsors, healthcare systems, higher education and other not-for-profit organizations worldwide; and

Investments in New Businesses – Focuses on providing investment management solutions to ultra-high-net-worth families residing in the United States; hosted technology services to family offices and financial institutions; developing network and data protection services; entering new markets; and conducting other research and development activities.

The Company's CODM is the chief executive officer who uses the reported measures of each business segment's profit or loss to allocate resources and assess performance by comparing historical, actual and forecasted amounts. The Company's CODM does not evaluate business segments using asset information.

There are no inter-segment revenues for the three months ended March 31, 2025 and 2024. The accounting policies of the reportable business segments are the same as those described in Note 1 to the Consolidated Financial Statements included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2024.

The following tables highlight certain financial information about each of the business segments for the three months ended March 31, 2025 and 2024:

	Investment Managers		Private Banks		Investment Advisors		Institutional Investors		Investments In New Businesses		Total
	For the Three Months Ended March 31, 2025
Total revenue	$	192,048	$	137,714	$	136,576	$	68,506	$	16,500	$	551,344
Less:
Operations & services	86,239		50,286		41,038		20,673		4,961		203,197
Sales, marketing & client service	9,832		8,910		9,195		9,656		4,927		42,520
Technology services & infrastructure	12,752		28,335		8,866		1,549		1,368		52,870
Strategic initiatives & new business development	6,387		22,379		11,708		2,559		5,698		48,731
Other segment expenses (1)	2,001		4,839		1,648		1,433		1,542		11,463
Segment profit (loss)	$	74,837	$	22,965	$	64,121	$	32,636	$	(1,996)	$	192,563

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	Investment Managers		Private Banks		Investment Advisors		Institutional Investors		Investments In New Businesses		Total
	For the Three Months Ended March 31, 2024
Total revenue	$	172,653	$	130,137	$	122,718	$	71,778	$	14,293	$	511,579
Less:
Operations & services	78,374		48,262		39,051		21,623		4,918		192,228
Sales, marketing & client service	9,827		10,774		5,220		11,493		4,607		41,921
Technology services & infrastructure	10,454		26,906		8,329		1,477		1,296		48,462
Strategic initiatives & new business development	7,989		21,258		12,548		3,585		6,018		51,398
Other segment expenses (1)	2,906		5,774		1,810		1,931		1,544		13,965
Segment profit (loss)	$	63,103	$	17,163	$	55,760	$	31,669	$	(4,090)	$	163,605

(1) Other segment expenses for each reportable segment includes professional services, occupancy and certain overhead expenses.

A reconciliation of the total segment profit to income from operations on the Consolidated Statements of Operations for the three months ended March 31, 2025 and 2024 is as follows:

	2025		2024
Total segment profit	$	192,563	$	163,605
Corporate overhead expenses	(35,466)		(37,754)
Income from operations	$	157,097	$	125,851

Other income and expense items to reconcile income from operations to income before income taxes on the Consolidated Statements of Operations include net gain from investments, interest and dividend income, interest expense and equity in the earnings of unconsolidated affiliates. These items are not allocated to the Company's segments.

The following tables provide additional information for the three months ended March 31, 2025 and 2024 pertaining to the business segments:

	Capital Expenditures (2)				Depreciation
	2025		2024		2025		2024
Investment Managers	$	6,486	$	7,675	$	62	$	1,579
Private Banks	5,503		6,432		2,259		2,904
Investment Advisors	2,632		3,165		2,025		2,181
Institutional Investors	763		1,119		319		604
Investments in New Businesses	279		416		78		172
Total from business segments	$	15,663	$	18,807	$	4,743	$	7,440
Corporate overhead	365		542		3,184		949
	$	16,028	$	19,349	$	7,927	$	8,389

(2) Capital expenditures include additions to property and equipment and capitalized software.

	Amortization
	2025		2024
Investment Managers	$	202	$	—
Private Banks	5,275		5,111
Investment Advisors	2,419		2,122
Institutional Investors	1,875		1,892
Investments in New Businesses	875		1,182
Total from business segments	$	10,646	$	10,307
Corporate overhead	64		79
	$	10,710	$	10,386

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Note 10 – Income Taxes

The gross liability for unrecognized tax benefits at March 31, 2025 and December 31, 2024 was $15,195 and $15,241, respectively, exclusive of interest and penalties, of which $15,103 and $14,886 would affect the effective tax rate if the Company were to recognize the tax benefit.

The Company classifies interest and penalties on unrecognized tax benefits as income tax expense. As of March 31, 2025 and December 31, 2024, the combined amount of accrued interest and penalties related to tax positions taken on tax returns was $1,933 and $1,725, respectively.

	March 31, 2025		December 31, 2024
Gross liability for unrecognized tax benefits, exclusive of interest and penalties	$	15,195	$	15,241
Interest and penalties on unrecognized benefits	1,933		1,725
Total gross uncertain tax positions	$	17,128	$	16,966
Amount included in Current liabilities	$	4,239	$	4,377
Amount included in Other long-term liabilities	12,889		12,589
	$	17,128	$	16,966

The effective income tax rate for the three months ended March 31, 2025 and 2024 differs from the federal income tax statutory rate due to the following:

	Three Months Ended March 31,
	2025		2024
Statutory rate	21.0	%	21.0	%
State taxes, net of federal tax benefit	2.9		2.9
Foreign tax expense and tax rate differential	(0.2)		0.1
Tax benefit from stock option exercises	(0.5)		(1.1)
Other, net	(0.4)		—
	22.8	%	22.9	%

The Company files income tax returns in the United States on a consolidated basis and in many U.S. state and foreign jurisdictions. The Company is subject to examination of income tax returns by the Internal Revenue Service (IRS) and other domestic and foreign tax authorities. The Company is no longer subject to U.S. federal income tax examination for years before 2021 and is no longer subject to state, local or foreign income tax examinations by authorities for years before 2018.

The Company estimates it will recognize $4,239 of gross unrecognized tax benefits. This amount is expected to be paid within one year or to be removed at the expiration of the statute of limitations and resolution of income tax audits and is netted against the current payable account. These unrecognized tax benefits are related to tax positions taken on certain federal, state, and foreign tax returns. However, the timing of the resolution of income tax examinations is highly uncertain, and the amounts ultimately paid, if any, upon resolution of the issues raised by the taxing authorities may differ materially from the amounts accrued for each year. While it is reasonably possible that some issues under examination could be resolved in the next twelve months, based upon the current facts and circumstances, the Company cannot reasonably estimate the timing of such resolution or the total range of potential changes as it relates to the current unrecognized tax benefits that are recorded as part of the Company’s financial statements.

Note 11 – Commitments and Contingencies

In the ordinary course of business, the Company from time to time enters into contracts containing indemnification obligations of the Company. These obligations may require the Company to make payments to another party upon the occurrence of certain events including the failure by the Company to meet its performance obligations under the contract. These contractual indemnification provisions are often standard contractual terms of the nature customarily found in the type of contracts entered into by the Company. In many cases, there are no stated or notional amounts included in the indemnification provisions. There are no amounts reflected on the Consolidated Balance Sheets as of March 31, 2025 and December 31, 2024 related to these indemnifications.

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Rubicon Wealth Management

Prior to the relationship termination described in the following sentence, SEI Private Trust Company (SPTC), a wholly-owned operating subsidiary of SEI, held custody accounts for the end-clients of Rubicon Wealth Management LLC, an SPTC investment advisor client (Rubicon). On May 1, 2024, SPTC terminated its client relationship with Rubicon in light of the events associated with the Allegation (as defined below), and notified Rubicon clients with accounts at SPTC that they were required to transfer their accounts to other custodians.

Beginning on July 10, 2024, nine of Rubicon’s clients that had custodial accounts at SPTC filed state civil actions for fraud in the Court of Common Pleas of Montgomery County, Pennsylvania against Rubicon, its founder, Scott Mason, Mr. Mason’s wife, Lynne Mason, and Orchard Park Real Estate Holdings LLC (Orchard Park), a business owned by Mr. Mason. The fraud allegation (the Allegation) is based on the claim that Mr. Mason used Rubicon client funds to invest in Orchard Park, an entity allegedly formed and controlled by Mr. Mason, and that all such invested funds were subsequently withdrawn from Orchard Park by Mr. Mason and were used for his own, extensive personal expenses. The Company is also aware of at least four other cases filed in other jurisdictions against Rubicon and/or the Masons and/or Orchard Park, and there may be additional cases filed against Rubicon and/or the Masons of which the Company is unaware. On January 17, 2025, the SEC charged Mr. Mason, Rubicon, and Orchard Park with violating Section 10(b) of the Securities Exchange Act of 1934 and Rule 10b-5 thereunder, and Mr. Mason and Rubicon with violating Sections 206(1) and (2) of the Investment Advisers Act of 1940 in connection with the Allegation. That same day, the U.S. Attorney’s Office for the Eastern District of Pennsylvania announced criminal charges against Mr. Mason. Mason, Rubicon and Orchard Park have consented to the entry of final judgments in the SEC matter, subject to court approval. On January 28, 2025, Mason pled guilty to nine criminal charges, including wire fraud, securities fraud, investment advisor fraud and filing false tax returns. A sentencing hearing has been scheduled for June 4, 2025.

As of April 16, 2025, eight separate suits have been filed against SPTC in its capacity as custodian for the Rubicon accounts of the plaintiffs (collectively, the Plaintiffs). These actions were also filed in the Court of Common Pleas of Montgomery County, Pennsylvania and are: Star Sitron vs. SEI Private Trust Company, Case No. 2024-17132 (Sitron); Charles Murray vs. SEI Private Trust Company, Case No. 2024-18391 (Murray); James A. Byrne & Sharon Byrne vs. SEI Private Trust Company, Case No. 2024-20612; Melody Pettinelli & Melody Pettinelli as Trustee of the Donald Pettinelli Trust dated 11/7/1996 vs. SEI Private Trust Company, Case. 2024-21377; Norman Love vs. SEI Private Trust Company, Case No. 2024-21361; Stephen Red & Carla Red vs. SEI Private Trust Company, Case No. 2024-21902; Edward A. Tettemer & Lyn K. Tettemer vs. SEI Private Trust Company, Case No. 2024-21827; and Jonathan Klein & Sara Klein vs. SEI Private Trust Company, Case No. 2024- 23294 (collectively, the Rubicon Actions). Based on the complaints that have thus far been filed in the Rubicon Actions, these actions allege several different claims, including breach of contract, breach of fiduciary duty, negligence, violation of Pennsylvania's Unfair Trade Practices and Consumer Protection Law (UTPCPL), and aiding and abetting tortious conduct by SPTC in connection with certain transfers of Plaintiffs’ assets from SPTC custodial accounts to Orchard Park bank accounts. SPTC has been served with complaints in two of the Rubicon Actions, Sitron and Murray. In the remaining six Rubicon Actions, the Plaintiffs have commenced suit but have not filed their formal complaints. The Sitron and Murray cases are both in the early stages, with initial motion practice and discovery now occurring.

On September 12, 2024 the Sitron court issued an initial case management order requiring, among other things, fact discovery to be completed within approximately 18 months and dispositive motions to be filed within 21 months from the commencement of the action. On August 8, 2024, SPTC filed preliminary objections to the plaintiff’s complaint in Sitron. On March 18, 2025, the Sitron court granted in part SPTC’s preliminary objections, dismissing with prejudice Sitron’s UTPCPL claim and claim of aiding and abetting tortious conduct, and denying SPTC’s remaining preliminary objections. On April 14, 2025, the court denied Sitron’s motion for partial reconsideration of the court’s March 18, 2025 order, and on April 14, 2025 the court denied Sitron’s motion to take an immediate appeal of the dismissal of the UTPCPL and aiding and abetting tortious conduct claims. On April 7, 2025, SPTC filed its Answer with New Matter to the Sitron complaint, and filed a writ of summons to join Rubicon, Mason, Orchard Park, and another Rubicon entity as additional defendants in the Sitron action.

On October 7, 2024, the Murray court issued an initial case management order requiring, among other things, fact discovery to be completed within 9 months and dispositive motions to be filed within 12 months of commencement of the action. The parties are seeking to extend those deadlines to 18 months for discovery and 21 months for dispositive motions, which is the schedule in the Sitron matter. On October 16, 2024, SPTC filed preliminary objections to the plaintiff's claims in Murray. On December 13, 2024, the Murray court denied each of SPTC’s preliminary objections. On January 16, 2025, SPTC filed its Answer with New Matter to the Murray complaint. On January 17, 2025, SPTC filed a writ of summons to join Rubicon, Mason, Orchard Park, and another Rubicon entity as additional defendants in the Murray action, and on February 5, 2025, SPTC filed its joinder complaint against those additional defendants. While the Rubicon Actions are in their infancy and the ultimate outcomes of these litigations remain uncertain, SPTC intends to vigorously

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defend each of the Rubicon Actions. Currently, SPTC estimates that the aggregate amount of Rubicon client assets transferred at the direction of Mr. Mason from SPTC custodial accounts to Orchard Park bank accounts is approximately $15,000. In the event that SPTC is unsuccessful in its defense of the Rubicon Actions, SEI does not currently believe that the losses associated with such unsuccessful defense would exceed the approximately $15,000 of Rubicon client assets that Mr. Mason directed to be transferred to Orchard Park.

United Kingdom Financial Conduct Authority Supervisory Review of SEI Investments (Europe) Limited

On July 31, 2024, SEI Investments (Europe) Limited (SIEL), an indirectly, wholly-owned operating subsidiary of SEI, received a final requirement notice from the Financial Conduct Authority of the United Kingdom (the FCA) under section 166(3)(a) of the Financial Services and Markets Act 2000 (FSMA), requiring SIEL to engage a “Skilled Person” to undertake a two-stage review of SIEL’s governance arrangements and control environment. In the first stage, the Skilled Person is to provide SIEL and the FCA with a report setting out the Skilled Person’s view of the effectiveness of the control environment and governance arrangements with respect to key risks, as well as the Skilled Person’s recommendations where necessary to address any identified weaknesses (the Section 166 Report). In the second stage, the Skilled Person is to provide an independent view of the quality and completeness of the remediation carried out by SIEL to address any findings from the initial stage and any self-identified weaknesses, including a view on SIEL’s compliance with relevant regulations. The appointment of a Skilled Person is one of the regulatory tools used by the FCA to supervise and monitor firms it regulates. A Skilled Person is an independent third-party expert with the relevant knowledge and experience to undertake a review as described above. This is not an enforcement action nor an investigation but an action taken as part of its supervisory oversight.

In August 2024, SIEL, with the approval of FCA, appointed the firm of Grant Thornton to act as the Skilled Person.

On December 16, 2024, Grant Thornton delivered the first stage of its Skilled Person Report in which it concluded, in summary, that SIEL has an established corporate governance framework and risk management framework that it considered to be appropriate in design for the relative size and complexity of its activities. The Skilled Person Report did however make a number of recommendations for improvements in its governance arrangements with its U.S. parent, and with respect to SIEL’s three lines of defense: resourcing of control functions, strategy and culture.

To provide the necessary assurance to the FCA of SIEL’s focus on addressing the recommendations and concerns, on February 26, 2025, SIEL voluntarily applied to the FCA under section 55L(5)(a) FSMA for the imposition by the FCA of requirements on its regulatory permission (“Voluntary Requirement” / “VREQ”). From February 26, 2025 onwards, SIEL may not, without the FCA’s prior written consent:

•enter into new client agreements (contracts) where a material change in SIEL’s existing suite of propositions, systems or services is required or where significant senior management engagement would be needed; and

•launch a new proposition, product or service that is not already offered by SIEL.

The VREQ does not prevent SIEL from on-boarding new clients where this does not result in significant new service requirements or significant senior management engagement.

The VREQ currently imposed on SIEL is reflected in full on the FCA Register.

SIEL is fully committed to addressing the concerns raised by the FCA. The Company believes the actions SIEL is taking to remediate the issues identified in the Skilled Person Report will not only strengthen its business but also help maintain its focus on achieving positive customer outcomes, positioning SIEL for sustainable future growth.

The VREQ will stay in effect unless and until varied or cancelled by the FCA (either on the application of SIEL or of the FCA’s own volition), until the FCA is satisfied that SIEL has demonstrated that it has addressed the concerns the FCA has communicated to it.

Other Matters

The Company and certain of its subsidiaries are party to various other examinations, investigations, actions and claims arising in the normal course of business that the Company does not believe are material. The Company believes that the ultimate resolution of these matters will not have a material adverse effect on the Company's financial position or the manner in which the Company conducts its business. Currently, the Company does not believe the amount of losses associated with these matters can be estimated. While the Company does not believe that the amount of such losses will, when liquidated or estimable, be material to its financial position, the assumptions may be incorrect and any such loss could have a material adverse effect on the Company's results of operations or the manner in which the Company conducts its business in the period(s) during which the underlying matters are resolved.

Unfunded Commitments to Limited Partnership Funds

The Company has unfunded commitments of $9,434 at March 31, 2025 to limited partnership funds (See Note 5).

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Note 12 – Goodwill and Intangible Assets

The changes in the carrying amount of the Company's goodwill by segment are as follows:

	Investment Managers		Investment Advisors		Institutional Investors		Investments in New Businesses		Total
Balance, December 31, 2024	$	55,267	$	33,131	$	61,719	$	20,170	$	170,287
Reclassification of goodwill to assets held for sale	—		—		—		(1,711)		(1,711)
Measurement period adjustments	—		(1,109)		—		—		(1,109)
Foreign currency translation adjustments	1		—		431		—		432
Balance, March 31, 2025	$	55,268	$	32,022	$	62,150	$	18,459	$	167,899

In December 2024, the Company acquired LifeYield, LLC (LifeYield). The total purchase price for LifeYield included a contingent consideration subject to the achievement of certain post-closing performance measurements determined during a time period up to four years from the closing date. During the three months ended March 31, 2025, the Company recorded an adjustment of $1,109 to finalize the calculation of the contingent consideration which reduced the amount of goodwill recorded through the acquisition. Also during the three months ended March 31, 2025, the Company made an adjustment of $254 which reduced the fair value of the contingent consideration. This fair value adjustment to the contingent consideration is reflected in Facilities, supplies and other costs on the Consolidated Statement of Operations. As of March 31, 2025, the fair value of the contingent consideration of $10,465 is included in Other long-term liabilities on the accompanying Consolidated Balance Sheet.

In November 2023, the Company's wholly-owned operating subsidiary in the United Kingdom, SIEL, acquired all of the outstanding equity of XPS Pensions (Nexus) Limited, principal employer and scheme funder of the National Pensions Trust (NPT), from its parent company, XPS Pensions Group PLC (XPS). The total purchase price for XPS Pensions (Nexus) Limited included a contingent consideration payable to the sellers subject to the achievement of certain post-closing performance measurements determined during intervals occurring within two years immediately following the closing date. During the three months ended March 31, 2025, the Company made an adjustment of $1,097 which reduced the fair value of the contingent consideration. The fair value adjustment to the contingent consideration is reflected in Facilities, supplies and other costs on the Consolidated Statement of Operations. As of March 31, 2025, the fair value of the contingent consideration of $1,423 is included in Other long-term liabilities on the accompanying Consolidated Balance Sheet.

The Company recognized $3,449 and $3,403 of amortization expense related to acquired intangible assets during the three months ended March 31, 2025 and 2024, respectively.

Note 13 – Revenues from Contracts with Customers

The Company’s principal sources of revenues are: (1) asset management, administration and distribution fees primarily earned based upon a contractual percentage of net assets under management or administration; and (2) information processing and software servicing fees that are either recurring and primarily earned based upon the number of trust accounts being serviced or a percentage of the market value of the clients' assets processed on the Company's platforms, or non-recurring and based upon project-oriented contractual agreements related to client implementations.

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Disaggregation of Revenue

The following tables provide additional information pertaining to the Company's revenues disaggregated by major product line and primary geographic market based on the location of the use of the products or services for each of the business segments for the three months ended March 31, 2025 and 2024:

	Investment Managers		Private Banks		Investment Advisors		Institutional Investors		Investments In New Businesses		Total
Major Product Lines:	For the Three Months Ended March 31, 2025
Investment management fees from pooled investment products	$	109	$	30,743	$	55,104	$	11,576	$	403	$	97,935
Investment management fees from investment management agreements	—		1,058		52,077		52,237		4,784		110,156
Investment operations fees	180,357		622		20,837		11		1,133		202,960
Investment processing fees - PaaS	1,287		75,856		1,364		623		9		79,139
Investment processing fees - SaaS	—		21,815		1,382		1,836		5,824		30,857
Professional services fees	1,709		6,914		—		—		985		9,608
Account fees and other	8,586		706		5,812		2,223		3,362		20,689
Total revenues	$	192,048	$	137,714	$	136,576	$	68,506	$	16,500	$	551,344
Primary Geographic Markets:
United States	$	170,036	$	93,131	$	136,576	$	57,009	$	15,930	$	472,682
United Kingdom	—		29,767		—		7,999		570		38,336
Canada	—		9,983		—		1,415		—		11,398
Ireland	14,059		4,833		—		2,083		—		20,975
Luxembourg	7,953		—		—		—		—		7,953
Total revenues	$	192,048	$	137,714	$	136,576	$	68,506	$	16,500	$	551,344

	Investment Managers		Private Banks		Investment Advisors		Institutional Investors		Investments In New Businesses		Total
Major Product Lines:	For the Three Months Ended March 31, 2024
Investment management fees from pooled investment products	$	84	$	32,399	$	58,597	$	12,074	$	356	$	103,510
Investment management fees from investment management agreements	—		931		48,161		54,209		4,308		107,609
Investment operations fees	164,189		539		9,644		—		1,478		175,850
Investment processing fees - PaaS	1,258		67,846		1,281		423		10		70,818
Investment processing fees - SaaS	19		23,459		—		2,088		5,097		30,663
Professional services fees	1,017		4,115		—		—		583		5,715
Account fees and other	6,086		848		5,035		2,984		2,461		17,414
Total revenues	$	172,653	$	130,137	$	122,718	$	71,778	$	14,293	$	511,579
Primary Geographic Markets:
United States	$	155,959	$	85,775	$	122,718	$	59,376	$	14,293	$	438,121
United Kingdom	—		29,848		—		9,218		—		39,066
Canada	—		9,799		—		1,471		—		11,270
Ireland	9,906		4,715		—		1,713		—		16,334
Luxembourg	6,788		—		—		—		—		6,788
Total revenues	$	172,653	$	130,137	$	122,718	$	71,778	$	14,293	$	511,579

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Investment management fees from pooled investment products - Revenues associated with clients' assets invested in Company-sponsored pooled investment products. Contractual fees are stated as a percentage of the market value of assets under management and collected on a monthly basis. Revenues are recognized in Asset management, administration and distribution fees on the accompanying Consolidated Statements of Operations.

Investment management fees from investment management agreements - Revenues based on assets of clients of the Institutional Investors segment primarily invested in Company-sponsored products. Each client is charged an investment management fee that is stated as a percentage of the market value of all assets under management. The client is billed directly on a quarterly basis. Revenues are recognized in Asset management, administration and distribution fees on the accompanying Consolidated Statements of Operations.

Revenues associated with the separately managed account program offered through registered investment advisors located throughout the United States. The contractual fee is stated as a percentage of the market value of all assets invested in the separately managed account and collected on a quarterly basis. Revenues are recognized in Asset management, administration and distribution fees on the accompanying Consolidated Statements of Operations.

Investment operations fees - Revenues earned from accounting and administrative services, distribution support services and regulatory and compliance services to investment management firms and family offices. The Company contracts directly with the investment management firm or family office. The contractual fees are stated as a percentage of net assets under administration and billed when asset valuations are finalized. Also includes income from client cash balances held in the FDIC-insured accounts through the SEI Integrated Cash program. Revenues are recognized in Asset management, administration and distribution fees on the accompanying Consolidated Statements of Operations.

Investment processing fees - Platform as a Service - Revenues associated with clients that outsource their entire investment operation and back-office processing functions. Through the use of the Company's proprietary platforms, the Company assumes all back-office investment processing services including investment processing, custody and safekeeping of assets, income collections, securities settlement and other related trust activities. The contractual fee is based on a monthly fee plus additional fees determined on a per-account or per-transaction basis. Contractual fees can also be stated as a percentage of the value of assets processed on the Company's platforms each month as long as the fee is in excess of a monthly contractual minimum. The client is billed directly on a monthly basis. Revenues are recognized in Information processing and software servicing fees on the accompanying Consolidated Statements of Operations.

Revenues associated with clients of the mutual fund trading solution are fees recognized for shareholder services and related services through the use of the Company's proprietary platform or through third-party vendor agreements. Contractual fees are stated as a percentage of the value of total assets or positions processed on the Company's platform or subject to third-party vendor agreements each month. Fees are billed and collected on a monthly and quarterly basis. These revenues were previously classified under Account fees and other in 2023 and have been reclassified to conform to the current year presentation.

Investment processing fees - Software as a Service - Revenues associated with clients of the Private Banks segment for application software services. Clients retain responsibility for all investment operations, client administration and other back-office trust operations. The contractual fee is based on a monthly fee plus additional fees determined on a per-account or per-transaction basis. The client is billed directly on a monthly basis.

Revenues associated with clients of the Investments in New Businesses segment processed on the Archway PlatformSM are fees for hosted technology services to family offices and financial institutions. The Archway Platform is an integrated technology platform used for investment, operations, accounting and client reporting by these institutions. The contractual fee is based on a monthly subscription fee to access the Archway Platform along with additional fees on a per transaction basis.

Revenues associated with clients of the Institutional Investors segment processed on the SEI NovusSM portfolio intelligence tool are fees for data management, performance measurement, reporting, and risk analytics. The contractual fee is based on a fixed fee to access SEI Novus and includes fees for integration of historical fund data and custom reporting.

All revenues from investment processing fees are recognized in Information processing and software servicing fees on the accompanying Consolidated Statements of Operations.

Professional services fees - Revenues associated with the business services migration for investment processing clients of the Private Banks segment and investment operations clients of the Investment Managers segment. In addition, Professional services include other services such as business transformation consulting. Typically fees are stated as a contractual fixed fee. The client is billed directly and fees are collected according to the terms of the agreement.

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Account fees and other - Revenues associated with custody account servicing, account terminations, reimbursements received for out-of-pocket expenses, and other fees for the provision of ancillary services.

Note 14 – Assets Held for Sale

On February 27, 2025, the Company and Aquiline Capital Partners LP (Aquiline), a private investment firm specializing in financial services and technology, announced that the companies have entered into a definitive agreement for Aquiline to acquire the Company's Family Office Services business. The total purchase price is $120,000 to be paid in cash at closing, and the transaction is expected to close during the second quarter 2025, subject to applicable regulatory approval and other customary closing conditions. The purchase price is subject to adjustments for the transfer of working capital accounts and funding of liabilities by the Company at closing. In connection with the agreement, the companies also entered into a transition services agreement whereby the Company will provide certain information technology, administrative and operational services to Aquiline for a period of time after the closing of the transaction to assist in the transfer of services.

As of March 31, 2025, the Company has identified assets within the disposal group with carrying amounts that are expected to be recovered principally through the transaction with Aquiline rather than through continuing use. As such, these assets within the disposal group have been classified as held for sale on the accompanying Consolidated Balance Sheet. The results of operations of the Company's Family Office Services business is reported in the Investments in New Businesses segment. Management does not believe the expected transaction represents a strategic shift that will have a significant impact on the Company's operations and financial results, and as such, the Family Office Services business is not considered a discontinued operation.

The Company's assets held for sale and related liabilities on the accompanying Consolidated Balance Sheet consist of:

Assets Held for Sale

	March 31, 2025
Receivables, net of allowance for doubtful accounts of $131	$	8,427
Property and equipment, net of accumulated depreciation of $2,144	210
Operating lease right-of-use assets	2,848
Capitalized software, net	492
Goodwill	1,711
Intangible Assets, net of accumulated amortization of $21,717	8,413
Deferred contract costs	395
Other assets, net	269
Total assets held for sale	$	22,765

Liabilities Related to Assets Held for Sale

	March 31, 2025
Accrued liabilities	$	1,188
Operating lease liabilities	2,993
Deferred revenue	202
Total liabilities related to assets held for sale	$	4,383

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Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations.

(In thousands, except asset balances and per-share data)

This discussion reviews and analyzes the consolidated financial condition, the consolidated results of operations and other key factors that may affect future performance. This discussion should be read in conjunction with the Consolidated Financial Statements, the Notes to the Consolidated Financial Statements and the Annual Report on Form 10-K for the year ended December 31, 2024.

Overview

Consolidated Summary

SEI Investments Company is a leading global provider of financial technology, operations, and asset management services within the financial services industry. Investment processing fees are earned as either monthly fees for contracted services or as a percentage of the market value of our clients' assets processed on our platforms. Investment operations and investment management fees are earned as a percentage of assets under management, administration or advised assets. As of March 31, 2025, through our subsidiaries and partnerships in which we have a significant interest, we manage, advise or administer $1.6 trillion in hedge, private equity, mutual fund and pooled or separately managed assets.

Condensed Consolidated Statements of Operations for the three months ended March 31, 2025 and 2024 were:

	Three Months Ended March 31,				Percent Change
	2025		2024
Revenues	$	551,344	$	511,579	8%
Expenses	394,247		385,728		2%
Income from operations	157,097		125,851		25%
Net gain from investments	493		2,256		(78)%
Interest income, net of interest expense	10,036		10,680		(6)%
Equity in earnings from unconsolidated affiliate	28,747		31,643		(9)%
Income before income taxes	196,373		170,430		15%
Income taxes	44,856		39,030		15%
Net income	151,517		131,400		15%
Diluted earnings per common share	$	1.17	$	0.99	18%

The following items had a significant impact on our financial results for the three months ended March 31, 2025 and 2024:

•Revenue from Assets under management, administration, and distribution fees increased in the first quarter of 2025 primarily from higher assets under administration due to cross sales to existing alternative investment clients of the Investment Managers segment as well as new sales within the segment. Average assets under administration increased $122.7 billion, or 13%, to $1.1 trillion during the first quarter 2025, as compared to $961.7 billion during the first quarter of 2024.

•Revenue from Asset management, administration and distribution fees also increased from market appreciation during 2024 and positive cash flows into separately managed account programs and Strategist programs of the Investment Advisors segment. This was partially offset by negative cash flows from SEI fund programs and fee reductions in separately managed account programs during 2024. Revenue growth was also partially offset by client losses in the Institutional Investors segment. Average assets under management in equity and fixed income programs, excluding LSV, increased $6.6 billion, or 4%, to $182.5 billion in the first quarter of 2025 as compared to $175.9 billion during the first quarter of 2024.

•Fees from the SEI Integrated Cash Program of the Investment Advisors segment increased to $20.8 million during the first quarter of 2025 as compared to $9.6 million during the first quarter of 2024.

•Revenue from Information processing and software servicing fees increased in the first quarter of 2025 primarily from new client conversions and growth from existing SEI Wealth PlatformSM (SWP) clients.

•Earnings from LSV decreased to $28.7 million in the first quarter of 2025 as compared to $31.6 million in the first quarter of 2024 due to negative cash flows from existing clients and client losses. Market appreciation of assets under management partially offset the decrease in earnings from LSV.

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•The decline in personnel costs was primarily due to severance costs of $6.2 million incurred during the first quarter of 2024. Increased personnel costs due to business growth, primarily in the Investment Managers segment, partially offset this increase.

•Operating expenses increased primarily from higher costs for consulting and outsourced vendor costs supporting operations in the Investment Managers and Private Banks segments.

•Capitalized software development costs were $7.4 million in the first quarter of 2025, of which $4.4 million was for continued enhancements to SWP. Capitalized software development costs also include $3.0 million of software development costs in the first quarter of 2025 for a new platform for the Investment Managers segment. We expect to place this platform into service during the second half of 2025.

•Amortization expense related to SWP was $7.1 million in the first quarter of 2025 as compared to $6.8 million in the first quarter of 2024.

•Interest and dividend income was $10.2 million in the first quarter of 2025 as compared to $10.8 million in the first quarter of 2024. The decrease in interest and dividend income was due to declining interest rates and lower invested cash balances.

•In February 2025, the Company entered into a definitive agreement with Aquiline Capital Partners LP (Aquiline) for the sale of SEI’s Family Office Services business for a cash consideration of $120.0 million (See caption titled "Divestiture of Family Office Services Business" later in this discussion).

•Effective tax rates were 22.8% during the first quarter 2025 and 22.9% during the first quarter 2024.

•SEI repurchased 2.5 million shares of its common stock for $192.8 million in the first quarter of 2025.

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Ending Asset Balances

(In millions)

	As of March 31,				Percent Change
	2025		2024
Investment Managers:
Collective trust fund programs (A)	$	209,491	$	161,660	30%
Liquidity funds	244		202		21%
Total assets under management	$	209,735	$	161,862	30%
Client assets under administration	1,061,067		959,904		11%
Total assets	$	1,270,802	$	1,121,766	13%
Private Banks:
Equity and fixed-income programs	$	25,590	$	25,282	1%
Collective trust fund programs	4		5		(20)%
Liquidity funds	3,670		2,733		34%
Total assets under management	$	29,264	$	28,020	4%
Client assets under administration	8,365		8,024		4%
Total assets	$	37,629	$	36,044	4%
Investment Advisors:
Equity and fixed-income programs	$	75,689	$	74,715	1%
Liquidity funds	3,153		4,722		(33)%
Total Platform assets under management	$	78,842	$	79,437	(1)%
Platform-only assets	25,591		20,516		25%
Platform-only assets-deposit program	2,216		897		147%
Total Platform assets	$	106,649	$	100,850	6%
Institutional Investors:
Equity and fixed-income programs	$	76,491	$	75,969	1%
Collective trust fund programs	1		1		—%
Liquidity funds	1,580		2,179		(27)%
Total assets under management	$	78,072	$	78,149	—%
Client assets under advisement	5,573		6,862		(19)%
Total assets	$	83,645	$	85,011	(2)%
Investments in New Businesses:
Equity and fixed-income programs	$	2,661	$	2,269	17%
Liquidity funds	288		223		29%
Total assets under management	$	2,949	$	2,492	18%
Client assets under administration (E)	14,846		15,411		(4)%
Client assets under advisement	2,219		1,248		78%
Total assets	$	20,014	$	19,151	5%
LSV:
Equity and fixed-income programs (B)	$	87,114	$	93,616	(7)%

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Total:
Equity and fixed-income programs (C)	$	267,545	$	271,851	(2)%
Collective trust fund programs	209,496		161,666		30%
Liquidity funds	8,935		10,059		(11)%
Total assets under management	$	485,976	$	443,576	10%
Client assets under advisement	7,792		8,110		(4)%
Client assets under administration (D)	1,084,278		983,339		10%
Platform-only assets	27,807		21,413		30%
Total assets	$	1,605,853	$	1,456,438	10%

(A)    Collective trust fund program assets are included in assets under management since SEI is the trustee. Fees earned on this product are less than fees earned on customized asset management programs.

(B)    Equity and fixed-income programs include $1.4 billion of assets managed by LSV in which fees are based solely on performance and are not calculated as an asset-based fee (as of March 31, 2025).

(C)    Equity and fixed-income programs include $6.4 billion of assets invested in various asset allocation funds at March 31, 2025.

(D)    In addition to the assets presented, SEI also administers an additional $10.9 billion in Funds of Funds assets on which SEI does not earn an administration fee (as of March 31, 2025).

(E)    Client assets under administration include $14.8 billion of assets related to the Family Office Services business to be divested during the second quarter 2025 (as of March 31, 2025).

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Average Asset Balances

(In millions)

	Three Months Ended March 31,				Percent Change
	2025		2024
Investment Managers:
Collective trust fund programs (A)	$	208,720	$	156,737	33%
Liquidity funds	256		207		24%
Total assets under management	$	208,976	$	156,944	33%
Client assets under administration	1,061,282		938,804		13%
Total assets	$	1,270,258	$	1,095,748	16%
Private Banks:
Equity and fixed-income programs	$	25,894	$	24,593	5%
Collective trust fund programs	4		4		—%
Liquidity funds	2,961		3,902		(24)%
Total assets under management	$	28,859	$	28,499	1%
Client assets under administration	8,488		7,753		9%
Total assets	$	37,347	$	36,252	3%
Investment Advisors:
Equity and fixed-income programs	$	77,287	$	72,689	6%
Liquidity funds	3,119		4,649		(33)%
Total Platform assets under management	$	80,406	$	77,338	4%
Platform-only assets	25,939		19,198		35%
Platform-only assets-deposit program	2,187		849		158%
Total Platform assets	$	108,532	$	97,385	11%
Institutional Investors:
Equity and fixed-income programs	$	76,492	$	76,414	—%
Collective trust fund programs	1		1		—%
Liquidity funds	1,655		1,812		(9)%
Total assets under management	$	78,148	$	78,227	—%
Client assets under advisement	5,741		6,498		(12)%
Total assets	$	83,889	$	84,725	(1)%
Investments in New Businesses:
Equity and fixed-income programs	$	2,801	$	2,200	27%
Liquidity funds	274		214		28%
Total assets under management	$	3,075	$	2,414	27%
Client assets under administration (E)	14,630		15,147		(3)%
Client assets under advisement	2,205		1,194		85%
Total assets	$	19,910	$	18,755	6%
LSV:
Equity and fixed-income programs (B)	$	87,790	$	90,708	(3)%

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Total:
Equity and fixed-income programs (C)	$	270,264	$	266,604	1%
Collective trust fund programs	208,725		156,742		33%
Liquidity funds	8,265		10,784		(23)%
Total assets under management	$	487,254	$	434,130	12%
Client assets under advisement	7,946		7,692		3%
Client assets under administration (D)	1,084,400		961,704		13%
Platform-only assets	28,126		20,047		40%
Total assets	$	1,607,726	$	1,423,573	13%

(A)    Collective trust fund program average assets are included in assets under management since SEI is the trustee. Fees earned on this product are less than fees earned on customized asset management programs.

(B)    Equity and fixed-income programs include assets managed by LSV in which fees are based solely on performance and are not calculated as an asset-based fee. The average value of these assets for the three months ended March 31, 2025 was $1.4 billion.

(C)    Equity and fixed-income programs include $6.4 billion of average assets invested in various asset allocation funds for the three months ended March 31, 2025.

(D)    In addition to the assets presented, SEI also administers an additional $10.6 billion of average assets in Funds of Funds assets for the three months ended March 31, 2025 on which SEI does not earn an administration fee.

(E)    Client assets under administration include $14.6 billion of average assets for the three months ended March 31, 2025 related to Family Office Services business to be divested during the second quarter 2025.

In the preceding tables, assets under management are total assets of our clients or their customers invested in our equity and fixed-income investment programs, collective trust fund programs, and liquidity funds for which we provide asset management services through our subsidiaries and partnerships in which we have a significant interest. Advised assets include assets for which we provide advisory services through a subsidiary to the accounts but do not manage the underlying assets. Assets under administration include total assets of our clients or their customers for which we provide administrative services, including client fund balances for which we provide administration and/or distribution services through our subsidiaries and partnerships in which we have a significant interest. Platform-only assets-deposit program include assets of our clients in the SEI Integrated Cash program for which we provide custody services through our federal thrift subsidiary. The assets presented in the preceding tables do not include assets processed on SWP and are not included in the accompanying Consolidated Balance Sheets because we do not own them.

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Business Segments

Revenues, Expenses and Operating Profit (Loss) for our business segments for the three months ended March 31, 2025 compared to the three months ended March 31, 2024 were as follows:

	Three Months Ended March 31,						Percent Change
	2025			2024
Investment Managers:
Revenues	$	192,048		$	172,653		11%
Expenses	117,211			109,550			7%
Operating Profit	$	74,837		$	63,103		19%
Operating Margin	39		%	37		%
Private Banks:
Revenues	$	137,714		$	130,137		6%
Expenses	114,749			112,974			2%
Operating Profit	$	22,965		$	17,163		34%
Operating Margin	17		%	13		%
Investment Advisors:
Revenues	$	136,576		$	122,718		11%
Expenses	72,455			66,958			8%
Operating Profit	$	64,121		$	55,760		15%
Operating Margin	47		%	45		%
Institutional Investors:
Revenues	$	68,506		$	71,778		(5)%
Expenses	35,870			40,109			(11)%
Operating Profit	$	32,636		$	31,669		3%
Operating Margin	48		%	44		%
Investments in New Businesses:
Revenues	$	16,500		$	14,293		15%
Expenses	18,496			18,383			1%
Operating Loss	$	(1,996)		$	(4,090)		NM

For additional information pertaining to our business segments, see Note 9 to the Consolidated Financial Statements.

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Investment Managers

Revenues increased $19.4 million, or 11%, in the three month period ended March 31, 2025 and were primarily affected by:

•Increased administration fees from additional services provided to our largest alternative fund clients;

•Increased revenues from services provided to collective investment trusts; and

•Positive cash flows into alternative and traditional funds from new and existing clients; partially offset by

•Client losses and fund closures.

Operating margin increased to 39% compared to 37% in the three month period. Operating income increased $11.7 million, or 19%, in the three month period and was primarily affected by:

•An increase in revenues as mentioned above; partially offset by

•Increased costs associated with new business, primarily personnel costs and third-party vendor costs; and

•Costs to enhance, support and maintain technologies and investment service capabilities.

Private Banks

	Three Months Ended March 31,				Percent Change
	2025		2024
Revenues:
Information processing and software servicing fees	$	105,199	$	96,178	9%
Asset management, administration & distribution fees	32,515		33,959		(4)%
Total revenues	$	137,714	$	130,137	6%

Revenues increased $7.6 million, or 6%, in the three month period ended March 31, 2025 and were primarily affected by:

•Increased investment processing fees from new SWP client conversions and growth from existing SWP clients due to market appreciation and increased transaction volumes;

•Increased investment management fees from existing international clients due to market appreciation; and

•Increased investment processing fees earned on our mutual fund trading solution; partially offset by

•Lower investment processing fees from the recontracting of existing clients and a client loss; and

•Lower investment management fees from the recontracting of an existing client.

Operating margins increased to 17% compared to 13% in the three month period. Operating income increased by $5.8 million, or 34%, in the three month period and was primarily affected by:

•An increase in revenues as mentioned above; partially offset by

•Increased costs, mainly personnel, consulting and outsourced vendor costs supporting operations.

Investment Advisors

	Three Months Ended March 31,				Percent Change
	2025		2024
Revenues:
Investment management fees-SEI fund programs	$	55,104	$	58,597	(6)%
Separately managed account fees	52,077		48,161		8%
Other fees	29,395		15,960		84%
Total revenues	$	136,576	$	122,718	11%

Revenues increased $13.9 million, or 11%, in the three month period ended March 31, 2025 and were primarily affected by:

•Increased fee revenue of $11.2 million from the SEI Integrated Cash Program; and

•Increased fees from separately managed account programs and Strategist programs due to growth from existing clients and market appreciation; partially offset by

•Decreased investment management fees from SEI fund programs resulting from the continued shift out of SEI fund programs into separately managed accounts and other investment products;

•Fee reductions in our separately managed account programs; and

•Decreased average basis points earned on assets in SEI mutual funds.

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Operating margin increased to 47% compared to 45% in the three month period. Operating income increased $8.4 million, or 15%, in the three month period and was primarily affected by:

•An increase in revenues as mentioned above; partially offset by

•Increased direct expenses associated with the increase in separately managed account fees;

•Increased personnel costs from business growth, and

•Increased stock-based compensation costs.

Institutional Investors

Revenues decreased $3.3 million, or 5%, in the three month period ended March 31, 2025 and were primarily affected by:

•Decreased investment management fees from fee reductions and client losses; partially offset by

•Increased investment management fees from existing clients due to higher assets under management due to market appreciation; and

•Revenues from new Outsourced Chief Investment Officer (OCIO) platform clients.

Operating margin increased to 48% compared to 44% in the three month period. Operating income increased $1.0 million, or 3%, in the three month period and was primarily affected by:

•Decreased direct expenses associated with investment management fees; and

•Decreased personnel costs; partially offset by

•A decrease in revenues as mentioned above.

Investments in New Businesses

	Three Months Ended March 31,				Percent Change
	2025		2024
Revenues:
SEI Family Office Services	$	9,089	$	8,795	3%
SEI Private Wealth Management	5,249		4,708		11%
Other	2,162		790		174%
Total revenues	$	16,500	$	14,293	15%

Revenues increased $2.2 million, or 15%, in the three month period ended March 31, 2025 and were primarily affected by:

•Increased revenues from network and data protection services offered through SEI Sphere due to new business;

•Increased revenues from SEI Private Wealth Management through higher assets under advisement due to market appreciation and new business; and

•Increased revenues from hosted technology offerings through SEI Family Office Services due to increased non-recurring implementation fees.

Other

Corporate overhead expenses

Corporate overhead expenses primarily consist of general and administrative expenses and other costs not directly attributable to a reportable business segment. Corporate overhead expenses were $35.5 million and $37.8 million in the three months ended March 31, 2025 and 2024, respectively. The decrease in corporate overhead expenses is primarily due to severance costs of $6.2 million incurred in first quarter of 2024. Increases in personnel costs, professional fees, consulting and stock-based compensation costs and investments in upgrading and enhancing various technologies utilized by corporate overhead units partially offset the decline in corporate overhead expenses.

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Other income and expense

Other income and expense items on the accompanying Consolidated Statements of Operations consist of: 

	Three Months Ended March 31,
	2025		2024
Net gain from investments	$	493	$	2,256
Interest and dividend income	10,221		10,819
Interest expense	(185)		(139)
Equity in earnings of unconsolidated affiliate	28,747		31,643
Total other income and expense items, net	$	39,276	$	44,579

Net gain from investments

Net gain from investments in the three months ended March 31, 2025 were primarily due to unrealized mark-to-market gains recorded in current earnings associated with LSV-sponsored investment funds and Company-sponsored investment funds from market appreciation (See Note 5 to the Consolidated Financial Statements).

Interest and dividend income

Interest and dividend income is earned based upon the amount of cash that is invested daily. The decrease in interest and dividend income in the three months ended March 31, 2025 was due to an overall decline in interest rates and lower invested cash balances.

Equity in earnings of unconsolidated affiliate

Equity in earnings of unconsolidated affiliate reflects our ownership interest in LSV. As of March 31, 2025, our total partnership interest in LSV was 38.6%. The table below presents the revenues and net income of LSV and the proportionate share in LSV's earnings.

	Three Months Ended March 31,				Percent Change
	2025		2024
Revenues of LSV	$	99,928	$	107,349	(7)%
Net income of LSV	74,514		82,012		(9)%
SEI's proportionate share in earnings of LSV	$	28,747	$	31,643	(9)%

The decrease in earnings from LSV in the three months ended March 31, 2025 was primarily due to lower assets under management from negative cash flows from existing clients and client losses. Market appreciation of client assets partially offset the decrease in earnings from LSV. Average assets under management by LSV decreased $2.9 billion to $87.8 billion during the three months ended March 31, 2025 as compared to $90.7 billion during the three months ended March 31, 2024, a decrease of 3%.

Amortization

Amortization expense on the accompanying Consolidated Statements of Operations consists of: 

	Three Months Ended March 31,				Percent Change
	2025		2024
Capitalized software development costs	$	7,197	$	6,904	4%
Intangible assets acquired through acquisitions and asset purchases	3,449		3,403		1%
Other	$	64	$	79	(19)%
Total amortization expense	$	10,710	$	10,386	3%

Capitalized software development costs

The increase in amortization expense related to capitalized software development costs during the three months ended March 31, 2025 was primarily due to significant enhancements to SWP. We expect to place a new platform for the Investment Managers segment into service during the second half of 2025 (See Note 1 to the Consolidated Financial Statements).

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Income Taxes

The effective income tax rates for the three months ended March 31, 2025 and 2024 differ from the federal income tax statutory rate due to the following:

	Three Months Ended March 31,
	2025		2024
Statutory rate	21.0	%	21.0	%
State taxes, net of federal tax benefit	2.9		2.9
Foreign tax expense and tax rate differential	(0.2)		0.1
Tax benefit from stock option exercises	(0.5)		(1.1)
Other, net	(0.4)		—
	22.8	%	22.9	%

Stock-Based Compensation

We recognized $14.1 million and $11.1 million in stock-based compensation expense during the three months ended March 31, 2025 and 2024, respectively. The increase in expense was primarily due to new equity awards granted during the fourth quarter 2024. The amount of stock-based compensation expense recognized is primarily based upon management's estimate of when the financial vesting targets of outstanding stock options may be achieved. Any change in the estimate could result in the amount of stock-based compensation expense to be accelerated, spread out over a longer period, or reversed. This may cause volatility in the recognition of stock-based compensation expense in future periods and could materially affect earnings (See Note 7 to the Consolidated Financial Statements).

We expect to recognize approximately $42.1 million in stock-based compensation expense during the remainder of 2025.

Divestiture of Family Office Services Business

On February 27, 2025, we announced the entry into a definitive agreement with Aquiline, a private investment firm specializing in financial services and technology, to acquire our Family Office Services business. The total purchase price is $120.0 million, subject to adjustment, to be paid in cash at closing, and the transaction is expected to close during the second quarter 2025. We also entered into a transition services agreement to provide certain information technology, administrative and operational services to Aquiline to assist in the transfer of services for a period of time after the closing of the transaction. The Family Office Services business is currently reported in our Investments in New Businesses segment and contributed $9.1 million and $8.8 million to our revenues and $3.2 million and $2.3 million to our income from operations during the three months ended March 31, 2025 and 2024, respectively.

Regulatory Matters

Like many firms operating within the financial services industry, we are experiencing a complex and changing regulatory environment across our markets. Our current scale and reach as a provider to the financial services industry, the introduction and implementation of new solutions for our financial services industry clients, the increased regulatory oversight of the financial services industry generally, new laws and regulations affecting the financial services industry and ever-changing regulatory interpretations of existing laws and regulations, and a greater propensity of regulators to pursue enforcement actions and other sanctions against regulated entities, have made this an increasingly challenging and costly regulatory environment in which to operate.

SEI and some of our regulated subsidiaries have undergone or been scheduled to undergo a range of periodic or thematic reviews, examinations or investigations by numerous regulatory authorities around the world, including the Office of the Comptroller of the Currency, the Securities and Exchange Commission, the Financial Industry Regulatory Authority, the Financial Conduct Authority of the United Kingdom (FCA), the Central Bank of Ireland and others. These regulatory activities typically result in the identification of matters or practices to be addressed by us or our subsidiaries and, in certain circumstances, the regulatory authorities require remediation activities or pursue enforcement proceedings against us or our subsidiaries. From time to time, the regulators in different jurisdictions will elevate their level of scrutiny of our operations as our business expands or is deemed critical to the operations of the relevant financial markets. As described under the caption “Regulatory Considerations” in our Annual Report on Form 10-K, the range of possible sanctions that are available to regulatory authorities include limitations on our ability to engage in business for specified periods of time, the revocation of registration, censures and fines. The direct and indirect costs of responding to these regulatory activities and of complying with new or modified regulations, as well as the potential financial costs and potential reputational impact against us of any enforcement proceedings that might result, is uncertain but could have a material adverse impact on our operating results or financial position.

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Liquidity and Capital Resources 

	Three Months Ended March 31,
	2025		2024
Net cash provided by operating activities	$	146,480	$	112,294
Net cash used in investing activities	(38,350)		(37,634)
Net cash used in financing activities	(241,548)		(62,157)
Effect of exchange rate changes on cash, cash equivalents and restricted cash	4,212		(572)
Net (decrease) increase in cash, cash equivalents and restricted cash	(129,206)		11,931
Cash, cash equivalents and restricted cash, beginning of period	840,193		834,998
Cash, cash equivalents and restricted cash, end of period	$	710,987	$	846,929

Our credit facility provides for borrowings up to $325.0 million and is scheduled to expire in April 2026 (See Note 6 to the Consolidated Financial Statements). We expect to renew the credit facility during 2025. As of April 10, 2025, we had outstanding letters of credit of $4.9 million which reduced the amount available under the credit facility. These letters of credit were primarily issued for the expansion of the corporate headquarters and are due to expire in late 2025. As of April 10, 2025, the amount of the credit facility available for corporate purposes was $320.1 million.

The availability of the credit facility is subject to compliance with certain covenants set forth in the agreement. The credit facility contains covenants which restrict our ability to engage in transactions with affiliates other than wholly-owned subsidiaries or to incur liens or certain types of indebtedness as defined in the agreement. In the event of a default under the credit facility, we would also be restricted from paying dividends on, or repurchasing our common stock. Currently, our ability to borrow from the credit facility is not limited by any covenant of the agreement (See Note 6 to the Consolidated Financial Statements).

The majority of excess cash reserves are primarily placed in accounts located in the United States that invest entirely in SEI-sponsored money market mutual funds denominated in the U.S. dollar. We also utilize demand deposit accounts or money market accounts at several large, well-established financial institutions located in the United States. The institutions we utilize have not indicated any stability issues regarding the ability to honor current or future deposit obligations to their customers. Accounts used to manage these excess cash reserves do not impose any restrictions or limitations that would prevent us from being able to access such cash amounts immediately. As of April 10, 2025, the amount of cash and cash equivalents considered free and immediately accessible for other general corporate purposes was $295.8 million.

Cash and cash equivalents include accounts managed by subsidiaries that are used in their operations or to cover specific business and regulatory requirements. The availability of this cash for other purposes beyond the operations of these subsidiaries may be limited. We therefore do not include accounts of foreign subsidiaries in the calculation of free and immediately accessible cash for other general corporate purposes. A portion of the undistributed earnings of foreign subsidiaries are deemed repatriated. Any subsequent transfer of available cash related to the repatriated earnings of foreign subsidiaries could significantly increase free and immediately accessible cash.

Cash flows from operations increased $34.2 million in the first three months of 2025 compared to the first three months of 2024 primarily from the increase in net income. The negative impact from the change in working capital accounts due to decreased accrued liabilities, primarily from the higher payments of incentive compensation awards in 2025 as compared to 2024, partially offset the increase in cash flows from operations.

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Net cash used in investing activities includes:

•Purchases, sales and maturities of marketable securities. Purchases, sales and maturities of marketable securities in the first three months of 2025 and 2024 were as follows:

	Three Months Ended March 31,
	2025		2024
Purchases	$	(50,113)	$	(41,650)
Sales and maturities	30,949		32,116
Net investing activities from marketable securities	$	(19,164)	$	(9,534)

See Note 5 to the Consolidated Financial Statements for more information related to marketable securities.

•The capitalization of costs incurred in developing computer software. We capitalized $7.4 million of software development costs in the first three months of 2025 as compared to $6.3 million in the first three months of 2024. Software development costs are principally related to significant enhancements for the expanded functionality of the SEI Wealth Platform and a new platform for the Investment Managers segment.

•Capital expenditures. Capital expenditures in the first three months of 2025 were $8.7 million as compared to $13.1 million in the first three months of 2024. Expenditures in 2025 and 2024 include capital outlays for purchased software and equipment for data center operations. We continue to evaluate improvements to our information technology infrastructure which, if implemented, will result in additional expenditures for purchased software and equipment for data center operations.

•Other investing activities. We made strategic investments of $3.8 million and $10.0 million during the first three months of 2025 and 2024, respectively, in innovation platforms for wealth management.

Net cash used in financing activities includes:

•The repurchase of common stock. Our Board of Directors has authorized the repurchase of common stock through multiple authorizations. Currently, there is no expiration date for the common stock repurchase program. We had total capital outlays of $203.7 million during the first three months of 2025 and $46.8 million during the first three months of 2024 for the repurchase of common stock.

•Proceeds from the issuance of common stock. We received $24.5 million and $45.0 million in proceeds from the issuance of common stock during the first three months of 2025 and 2024, respectively, through our equity compensation plans. These proceeds were primarily from stock option exercise activity.

•Dividend payments. Cash dividends paid were $62.3 million in the first three months of 2025 as compared to $60.4 million in the first three months of 2024.

Cash Requirements

Cash requirements and liquidity needs are primarily funded through cash flow from operations and our capacity for additional borrowing. At March 31, 2025, unused sources of liquidity consisted of cash and cash equivalents and the amount available under our credit facility. We expect to renew our current credit facility during 2025.

We are obligated to make payments in connection with the credit facility, operating leases, maintenance contracts and other commitments. We believe our operating cash flow, available borrowing capacity, and existing cash and cash equivalents will provide adequate funds for these obligations and ongoing operations. We currently anticipate that our available funds and cash flow from operations will be sufficient to meet our operational cash needs and fund our stock repurchase program for at least the next 12 months and for the foreseeable future.

Forward-Looking Information and Risk Factors

The Private Securities Litigation Reform Act of 1995 provides a “safe harbor” for forward-looking statements. Certain information contained in this discussion is or may be considered forward-looking. Forward-looking statements relate to future operations, strategies, financial results or other developments. Forward-looking statements are based upon estimates and assumptions that involve certain risks and uncertainties, many of which are beyond our control or are subject to change. Although we believe our assumptions are reasonable, they could be inaccurate. Our actual future revenues and income could differ materially from our expected results. We have no obligation to publicly update or revise any forward-looking statements.

Among the risks and uncertainties which may affect our future operations, strategies, financial results or other developments are those risks described in our latest Annual Report on Form 10-K in Part I, Item 1A. These risks include the following:

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•changes in capital markets and significant changes in the value of financial instruments that may affect our revenues and earnings;

•product development risk;

•risk of failure by a third-party service provider;

•pricing pressure from increased competition, disruptive technology and poor investment performance;

•the implementation of our outsourcing strategy leveraging a Global Capability Center;

•the affect on our earnings and cashflows from the performance of LSV Asset Management;

•consolidation within our target markets;

•external factors affecting the fiduciary management market;

•software defects, development delays or installation difficulties, which would harm our business and reputation and expose us to potential liability;

•data and cyber security risks;

•risk of the disclosure and misuse of personal data;

•risk of outages, data losses, and disruptions of services;

•intellectual property risks;

•third-party service providers in our operations;

•failing to keep pace with significant new technologies;

•poor investment performance of our investment products or a client preference for products other than those which we offer or for products that generate lower fees;

•failure to identify errors in quantitative investment models;

•investment advisory contracts which may be terminated or may not be renewed on favorable terms;

•the effect of governmental regulation;

•our ability to meet competing and/or conflicting regulatory requirements of the different jurisdictions;

•our ability to address conflicts of interest appropriately;

•fiduciary or other legal liability for client losses from our investment management operations;

•the results of commercial disputes, litigation and regulatory examinations and investigations;

•effective business strategies;

•our ability to capture the expected value from acquisitions, divestitures, joint ventures, minority investments or strategic alliances;

•increased costs and regulatory risks from the growth of our business;

•operational risks associated with the processing of investment transactions;

•disruptions of operations of other participants in the global financial system;

•our ability to hire and retain qualified employees;

•the competence and integrity of our employees and third-parties;

•our ability to receive dividends or other payments in needed amounts from our subsidiaries;

•changes in, or interpretation of, accounting principles or tax rules and regulations;

•fluctuations in foreign currency exchange rates;

•fluctuations in interest rates affecting the value of our fixed-income investment securities;

•financial and non-financial covenants which may restrict our ability to manage liquidity needs;

•stockholder activism efforts;

•retention of executive officers and senior management personnel;

•the effectiveness of our business, risk management and business continuity strategies, models and processes;

•unforeseen or catastrophic events, including the emergence of pandemic, extreme weather events or other natural disasters;

•geopolitical unrest and other events;

•climate change concerns and incidents; and

•environmental, social, and governance (ESG) matters.

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We conduct operations through many regulated wholly-owned subsidiaries. These subsidiaries include:

•SEI Investments Distribution Co., or SIDCO, a broker-dealer registered with the SEC under the Securities Exchange Act of 1934 and a member of the Financial Industry Regulatory Authority, Inc., or FINRA;

•SEI Investments Management Corporation, or SIMC, an investment advisor registered with the SEC under the Investment Advisers Act of 1940 and with the Commodity Futures Trading Commission, or CFTC, under the Commodity Exchange Act;

•SEI Private Trust Company, or SPTC, a limited purpose federal thrift chartered and regulated by the Office of the Comptroller of the Currency;

•SEI Trust Company, or STC, a Pennsylvania trust company, regulated by the Pennsylvania Department of Banking and Securities;

•SEI Institutional Transfer Agent, Inc., or SITA, a transfer agent registered with the SEC under the Securities Exchange Act of 1934;

•SEI Investments (Europe) Limited, or SIEL, an investment manager and financial institution subject to regulation by the Financial Conduct Authority of the United Kingdom;

•SEI Investments Canada Company, or SEI Canada, an investment fund manager that has various other capacities that is regulated by the Ontario Securities Commission and various provincial authorities;

•SEI Investments Global, Limited, or SIGL, a management company for Undertakings for Collective Investment in Transferable Securities, or UCITS, and for Alternative Investment Funds, or AIFs, that is regulated primarily by the Central Bank of Ireland, or CBI;

•SEI Investments - Global Fund Services, Ltd., or GFSL, an authorized provider of administration services for Irish and non-Irish collective investment schemes that is regulated by the CBI;

•SEI Investments - Depositary and Custodial Services (Ireland) Limited, or D&C, an authorized provider of depositary and custodial services that is regulated by the CBI;

•SEI Investments - Luxembourg S.A., or SEI Lux, a professional of the specialized financial sector subject to regulation by the Commission de Surveillance du Secteur Financier of the Grand Duchy of Luxembourg;

•SEI Investments Global (Cayman), Ltd., a full mutual fund administrator that is regulated by the Cayman Island Monetary Authority;

•SEI Investments (South Africa) (PTY) Limited, a Private Company that is a licensed Financial Service Provider regulated by the Financial Sector Conduct Authority; and

•SEI Investments - Guernsey Limited, a provider of custody, administration and reporting services that is regulated by the Guernsey Financial Services Commission.

In addition to the regulatory authorities listed above, our subsidiaries are subject to the jurisdiction of regulatory authorities in other foreign countries. In addition to our wholly-owned subsidiaries, we also own a minority interest of approximately 38.6% in LSV, which is also an investment advisor registered with the SEC.

The Company, its regulated subsidiaries, their regulated services and solutions and their customers are all subject to extensive legislation, regulation, and supervision that recently has been subject to, and continues to experience, significant change and increased regulatory activity. These changes and regulatory activities could have a material adverse effect on us and our clients.

The various governmental agencies and self-regulatory authorities that regulate or supervise the Company and its subsidiaries have broad administrative powers. In the event of a failure to comply with laws, regulations, and requirements of these agencies and authorities, the possible business process changes required or sanctions that may be imposed include the suspension of individual employees, limitations on our ability to engage in business for specified periods of time, the revocation of applicable registration as a broker-dealer, investment advisor or other regulated entity, and, as the case may be, censures and fines. Additionally, certain securities and banking laws applicable to us and our subsidiaries provide for certain private rights of action that could give rise to civil litigation. Any litigation could have significant financial and non-financial consequences including monetary judgments and the requirement to take action or limit activities that could ultimately affect our business.

Governmental scrutiny from regulators, legislative bodies, and law enforcement agencies with respect to matters relating to our regulated subsidiaries and their activities, services and solutions, our business practices, our past actions and other matters has increased dramatically in the past several years. Responding to these examinations, investigations, actions, and lawsuits, regardless of the ultimate outcome of the proceeding, is time consuming and expensive and can divert the time and effort of our senior management from our business. Penalties, fines and changes to business processes sought by regulatory authorities have increased substantially over the last several years, and certain regulators have been more

41

likely in recent years to commence enforcement actions or to advance or support legislation targeted at the financial services industry. We continue to be subject to inquiries from examinations and investigations by supervisory and enforcement divisions of regulatory authorities and expect this to continue in the future. We believe this is also the case with many of our regulated clients. Governmental scrutiny and legal and enforcement proceedings can also have a negative impact on our reputation, our relationship with clients and prospective clients, and on the morale and performance of our employees, which could adversely affect our businesses and results of operations.

We are subject to U.S. and foreign anti-money laundering and financial transparency laws that require implementation of regulations applicable to financial services companies, including standards for verifying client identification and monitoring client transactions and detecting and reporting suspicious activities. We offer investment and banking solutions that also are subject to regulation by the federal and state securities and banking authorities, as well as foreign regulatory authorities, where applicable. Existing or future regulations that affect these solutions could lead to a reduction in sales of these solutions or require modifications of these solutions.

We must comply with economic sanctions and embargo programs administered by the Office of Foreign Assets Control (OFAC) and similar national and multinational bodies and governmental agencies outside the United States, as well as anti-corruption and anti-money laundering laws and regulations throughout the world. We can incur higher costs and face greater compliance risks in structuring and operating our businesses to comply with these requirements. Furthermore, a violation of a sanction or embargo program or anti-corruption or anti-money laundering laws and regulations could subject us and our subsidiaries, and individual employees, to regulatory enforcement actions as well as significant civil and criminal penalties.

Our businesses are also subject to privacy and data protection information security legal requirements concerning the use and protection of certain personal information. These include those adopted pursuant to the Gramm-Leach-Bliley Act and the Fair and Accurate Credit Transactions Act of 2003 in the United States, the General Data Protection Regulation (GDPR) in the EU, Canada’s Personal Information Protection and Electronic Documents Act, the Cayman Islands' Data Protection Law, and various other laws. Privacy and data security legislation is a priority issue in many states and localities in the United States, as well as foreign jurisdictions outside of the EU. For example, California enacted the California Consumer Privacy Act (CCPA) which broadly regulates the sale of the consumer information of California residents and grants California residents certain rights to, among other things, access and delete data about them in certain circumstances. Other states are considering similar proposals. Such attempts by the states to regulate have the potential to create a patchwork of differing and/or conflicting state regulations. Ensuring compliance under ever-evolving privacy legislation, such as GDPR and CCPA, is an ongoing commitment, which involves substantial costs.

Compliance with existing and future regulations and responding to and complying with recent increased regulatory activity affecting broker-dealers, investment advisors, investment companies, financial institutions, and their service providers could have a significant impact on us. We periodically undergo regulatory examinations and respond to regulatory inquiries and document requests. In addition, recent and continuing legislative activity in the United States and in other jurisdictions (including the European Union and the United Kingdom) have made and continue to make extensive changes to the laws regulating financial services firms. As a result of these examinations, inquiries, and requests, as a result of increased civil litigation activity, and as a result of these new laws and regulations, we engage legal counsel and other subject matter experts, review our compliance procedures, solution and service offerings, and business operations, and make changes as we deem necessary or as may be required by the applicable authority. These additional activities and required changes may result in increased expense or may reduce revenues.

Our bank clients are subject to supervision by federal, state, and foreign banking and financial services authorities concerning the manner in which such clients purchase and receive our products and services. Our plan sponsor clients and our subsidiaries providing services to those clients are subject to supervision by the Department of Labor and compliance with employee benefit regulations. Investment advisor and broker-dealer clients are regulated by the SEC, state securities authorities, or FINRA. Existing or future regulations applicable to our clients may affect our clients’ purchase of our products and services.

In addition, see the discussion of governmental regulations in Item 1A “Risk Factors” in our latest Annual Report on Form 10-K for a description of the risks that the current regulatory regimes and proposed regulatory changes may present for our business.

Item 3. Quantitative and Qualitative Disclosures About Market Risk.

Information required by this item is set forth under the captions "Our revenues and earnings are affected by changes in capital markets and significant changes in the value of financial instruments" and "Changes in interest rates may affect the value of our fixed-income investment securities" in Item 1A Risk Factors and under the caption "Sensitivity of our revenues and earnings to capital market fluctuations" in Item 7, Management's Discussion and Analysis of Financial Condition and

42

Results of Operations of our Annual Report on Form 10-K for the year ended December 31, 2024. There have been no material changes to this information as it is disclosed in our Annual Report on Form 10-K for 2024.

Item 4. Controls and Procedures.

(a) Evaluation of Disclosure Controls and Procedures

Our management, with the participation of our Chief Executive Officer and Chief Financial Officer, evaluated the effectiveness of our disclosure controls and procedures as of the end of the period covered by this report. Based on that evaluation, the Chief Executive Officer and Chief Financial Officer concluded that our disclosure controls and procedures as of the end of the period covered by this report are effective in ensuring that information required to be disclosed by us in reports filed under the Securities Exchange Act of 1934 is recorded, processed, summarized and reported within the time periods specified in the SEC’s rules and forms. Disclosure controls and procedures include, without limitation, controls and procedures designed to ensure that information required to be disclosed by an issuer in the reports that it files or submits under the Act is accumulated and communicated to the issuer’s management including its principal executive and principal financial officers, or persons performing similar functions, as appropriate to allow timely decisions regarding required disclosure. A controls system, no matter how well designed and operated, cannot provide absolute assurance that the objectives of the controls systems are met, and no evaluation of controls can provide absolute assurance that all control issues and instances of fraud, if any, within a company have been detected.

(b) Change in Internal Control over Financial Reporting

No change in our internal control over financial reporting occurred during the quarter ended March 31, 2025 that has materially affected, or is reasonably likely to materially affect, our internal control over financial reporting.

43

PART II – OTHER INFORMATION

Item 1. Legal Proceedings.

We and certain of our subsidiaries are a party to or have property subject to litigation and other proceedings, examinations and investigations that arise in the ordinary course of our business that we do not believe are material. These types of matters could result in fines, penalties, cost reimbursements or contributions, compensatory or treble damages or non-monetary sanctions or relief. We believe the probability is remote that the outcome of any of these matters will have a material adverse effect on SEI as a whole, notwithstanding that the unfavorable resolution of any matter may have a material effect on our net earnings in any particular interim reporting period. We cannot predict the outcome of legal or other proceedings with certainty. These matters include the proceedings summarized in “Note 11. Commitments and Contingencies” included in our Notes to Consolidated Financial Statements.

Item 1A. Risk Factors.

Information regarding risk factors appears in Part I – Item 1A of the Company’s Annual Report on Form 10-K for the year ended December 31, 2024. There have been no material changes in the risk factors from those disclosed in the Annual Report on Form 10-K for 2024.

Item 2. Unregistered Sales of Equity Securities and Use of Proceeds.

(e)    Our Board of Directors has authorized the repurchase of up to $6.728 billion worth of our common stock through multiple authorizations through March 31, 2025. Currently, there is no expiration date for the common stock repurchase program. On March 18, 2025, our Board of Directors approved an increase in the stock repurchase program by an additional $500.0 million.

Information regarding the repurchase of common stock during the three months ended March 31, 2025 is as follows:

Period	Total Number of Shares Purchased	Average Price Paid per Share (1)		Total Number of Shares Purchased as Part of Publicly Announced Program	Approximate Dollar Value of Shares that May Yet Be Purchased Under the Program
January 2025	—	$	—	—	$	169,600,000
February 2025	138,000	79.68		138,000	158,636,000
March 2025	2,363,000	76.29		2,363,000	476,757,000
Total	2,501,000	$	76.48	2,501,000

(1) Average price paid per share does not include excise tax on stock repurchases.

Item 5. Other Information.

During the three months ended March 31, 2025, none of our officers or directors adopted or terminated any contract, instruction or written plan for the purchase or sale of our securities that was intended to satisfy the affirmative defense conditions of Rule 10b5-1(c) or any "non-Rule 10b5-1 trading arrangement" (as defined in Item 408 (c) of Regulation S-K).

44

Item 6. Exhibits.

The following is a list of exhibits filed as part of the Form 10-Q.

31.1	Rule 13a-15(e)/15d-15(e) Certification of Principal Executive Officer.
31.2	Rule 13a-15(e)/15d-15(e) Certification of Principal Financial Officer.
32	Section 1350 Certifications.
101.INS	XBRL Instance Document - the instance document does not appear in the Interactive Data File because its XBRL tags are embedded within the Inline XBRL document.
101.SCH	XBRL Taxonomy Extension Schema Document
101.CAL	XBRL Taxonomy Extension Calculation Linkbase Document
101.DEF	XBRL Taxonomy Extension Definition Linkbase Document
101.LAB	XBRL Taxonomy Extension Label Linkbase Document
101.PRE	XBRL Taxonomy Extension Presentation Linkbase Document

45

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.

		SEI INVESTMENTS COMPANY
Date:	April 28, 2025	By:	/s/ Sean J. Denham
			Sean J. Denham
			Chief Financial and Chief Operating Officer

46

EX-31.1

Exhibit 31.1

CERTIFICATIONS

I, Ryan P. Hicke, certify that:

1. I have reviewed this quarterly report on Form 10-Q of SEI Investments Company;

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

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

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

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

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

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

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

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

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 data 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 controls over financial reporting.

Date: April 28, 2025

/s/ Ryan P. Hicke

Ryan P. Hicke

Chief Executive Officer

EX-31.2

Exhibit 31.2

CERTIFICATIONS

I, Sean J. Denham, certify that:

1. I have reviewed this quarterly report on Form 10-Q of SEI Investments Company;

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

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

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

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

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

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

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

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

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 data 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 controls over financial reporting.

Date: April 28, 2025

/s/ Sean J. Denham

Sean J. Denham

Chief Financial and Chief Operating Officer

EX-32

Exhibit 32

CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF

THE SARBANES-OXLEY ACT OF 2002

I, Ryan P. Hicke, Chief Executive Officer, and I, Sean J. Denham, Chief Financial and Chief Operating Officer, of SEI Investments Company, a Pennsylvania corporation (the “Company”), hereby certify that, to my knowledge:

(1) The Company’s Quarterly Report on Form 10-Q for the quarterly period ended March 31, 2025 (the “Form 10-Q”) fully complies with the requirements of Section 13(a) of the Securities Exchange Act of 1934; and

(2) The information contained in the Form 10-Q fairly presents, in all material respects, the financial condition and results of operations of the Company.

Date:	April 28, 2025	Date:	April 28, 2025
/s/ Ryan P. Hicke		/s/ Sean J. Denham
Ryan P. Hicke		Sean J. Denham
Chief Executive Officer		Chief Financial and Chief Operating Officer

A signed original of this written statement required by Section 906 has been provided to the Company and will be retained by the Company and furnished to the Securities and Exchange Commission or its staff upon request.

XML

Cover page - shares	3 Months Ended
	Mar. 31, 2025	Apr. 10, 2025
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Current Fiscal Year End Date	--12-31
Document Period End Date	Mar. 31, 2025
Document Transition Report	false
Entity File Number	0-10200
Entity Registrant Name	SEI INVESTMENTS COMPANY
Entity Incorporation, State or Country Code	PA
Entity Tax Identification Number	23-1707341
Entity Address, Address Line One	1 Freedom Valley Drive
Entity Address, City or Town	Oaks
Entity Address, State or Province	PA
Entity Address, Postal Zip Code	19456-1100
City Area Code	610
Local Phone Number	676-1000
Title of 12(b) Security	Common Stock, par value $0.01 per share
Trading Symbol	SEIC
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		124,486,658
Entity Central Index Key	0000350894
Document Fiscal Year Focus	2025
Document Fiscal Period Focus	Q1
Amendment Flag	false

XML

Consolidated Balance Sheets (unaudited) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Current Assets:
Cash and cash equivalents	$ 710,685	$ 839,891
Restricted cash	302	302
Receivables from investment products	49,460	54,118
Receivables, net of allowance for doubtful accounts of $1,790 and $1,435	601,338	567,634
Securities owned	31,174	29,583
Assets held for sale	22,765	0
Other current assets	62,663	60,282
Total Current Assets	1,478,387	1,551,810
Property and Equipment, net of accumulated depreciation of $494,941 and $493,219	159,264	159,643
Operating Lease Right-of-Use Assets	25,225	28,905
Capitalized Software, net of accumulated amortization of $648,268 and $641,071	235,696	236,023
Investments	278,084	315,567
Goodwill	167,899	170,287
Intangible Assets, net of accumulated amortization of $37,833 and $55,835	66,484	77,370
Deferred Contract Costs	47,751	45,855
Deferred Income Taxes	55,209	51,984
Other Assets, net	52,043	47,162
Total Assets	2,566,042	2,684,606
Current Liabilities:
Accounts payable	11,168	13,081
Accrued liabilities	224,696	347,513
Current portion of long-term operating lease liabilities	7,359	7,900
Deferred revenue	13,824	12,019
Liabilities related to assets held for sale	4,383	0
Total Current Liabilities	261,430	380,513
Long-term Income Taxes Payable	803	803
Long-term Operating Lease Liabilities	20,971	24,235
Other Long-term Liabilities	24,986	26,943
Total Liabilities	308,190	432,494
Commitments and Contingencies
Shareholders' Equity:
Common stock, $0.01 par value, 750,000,000 shares authorized; 124,783,725 and 126,839,734 shares issued and outstanding	1,247	1,268
Capital in excess of par value	1,558,125	1,539,816
Retained earnings	737,020	758,003
Accumulated other comprehensive loss, net	(38,540)	(46,975)
Total Shareholders' Equity	2,257,852	2,252,112
Total Liabilities and Shareholders' Equity	$ 2,566,042	$ 2,684,606

XML

Consolidated Balance Sheets (unaudited) (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Statement of Financial Position [Abstract]
Receivables, allowance for doubtful accounts	$ 1,790	$ 1,435
Property and Equipment, accumulated depreciation	494,941	493,219
Capitalized Software, accumulated amortization	648,268	641,071
Intangible Assets, accumulated amortization	$ 37,833	$ 55,835
Shareholders' Equity:
Common stock, par value (in USD per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	750,000,000	750,000,000
Common stock, shares issued (in shares)	124,783,725	126,839,734
Common stock, shares outstanding (in shares)	124,783,725	126,839,734

XML

Consolidated Statements of Operations (unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Revenues:
Total revenue	$ 551,344	$ 511,579
Expenses:
Subadvisory, distribution and other asset management costs	47,532	46,768
Software royalties and other information processing costs	9,081	8,471
Compensation, benefits and other personnel	190,784	192,916
Stock-based compensation	14,138	11,059
Consulting, outsourcing and professional fees	56,001	51,976
Data processing and computer related	39,319	37,160
Facilities, supplies and other costs	18,755	18,603
Amortization	10,710	10,386
Depreciation	7,927	8,389
Total expenses	394,247	385,728
Income from operations	157,097	125,851
Net gain from investments	493	2,256
Interest and dividend income	10,221	10,819
Interest expense	(185)	(139)
Equity in earnings of unconsolidated affiliate	28,747	31,643
Income before income taxes	196,373	170,430
Income taxes	44,856	39,030
Net income	$ 151,517	$ 131,400
Basic earnings per common share (in USD per share)	$ 1.20	$ 1.00
Shares used to compute basic earnings per share (in shares)	126,561	131,417
Diluted earnings per common share (in USD per share)	$ 1.17	$ 0.99
Shares used to compute diluted earnings per share (in shares)	129,450	132,745
Asset management, administration and distribution fees
Revenues:
Total revenue	$ 432,143	$ 404,366
Information processing and software servicing fees
Revenues:
Total revenue	$ 119,201	$ 107,213

XML

Consolidated Statements of Comprehensive Income (unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Statement of Comprehensive Income [Abstract]
Net income	$ 151,517	$ 131,400
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments	5,366	(2,923)
Unrealized gain (loss) on investments:
Unrealized gains (losses) during the period, net of income taxes of $(926) and $367	3,101	(1,231)
Reclassification adjustment for gains realized in net income, net of income taxes of $9 and $31	(32)	(105)
Total other comprehensive income (loss), net of tax	8,435	(4,259)
Comprehensive income	$ 159,952	$ 127,141

XML

Consolidated Statements of Comprehensive Income (unaudited) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Statement of Comprehensive Income [Abstract]
Unrealized (losses) gains during period, tax benefit (expense)	$ (926)	$ 367
Reclassification adjustment for (gains) losses realized in net income, tax expense (benefit)	$ 9	$ 31

XML

Consolidated Statements of Changes in Equity (unaudited) - USD ($) $ in Thousands	Total	Common Stock	Capital In Excess of Par Value	Retained Earnings	Accumulated Other Comprehensive Loss
Beginning balance (in shares) at Dec. 31, 2023		131,178,000
Beginning balance at Dec. 31, 2023	$ 2,131,828	$ 1,312	$ 1,404,962	$ 762,586	$ (37,032)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	131,400			131,400
Other comprehensive (loss) income	(4,259)				(4,259)
Purchase and retirement of common stock (in shares)		(808,000)
Purchase and retirement of common stock	(56,001)	$ (8)	(5,877)	(50,116)
Issuance of common stock under employee stock purchase plan (in shares)		22,000
Issuance of common stock under employee stock purchase plan	1,196		1,196
Issuance of common stock under share-based award plans (in shares)		937,000
Issuance of common stock under share-based award plans	43,831	$ 9	43,822
Stock-based compensation	11,059		11,059
Ending balance (in shares) at Mar. 31, 2024		131,329,000
Ending balance at Mar. 31, 2024	$ 2,259,054	$ 1,313	1,455,162	843,870	(41,291)
Beginning balance (in shares) at Dec. 31, 2024	126,839,734	126,840,000
Beginning balance at Dec. 31, 2024	$ 2,252,112	$ 1,268	1,539,816	758,003	(46,975)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	151,517			151,517
Other comprehensive (loss) income	8,435				8,435
Purchase and retirement of common stock (in shares)		(2,501,000)
Purchase and retirement of common stock	(192,844)	$ (25)	(20,319)	(172,500)
Issuance of common stock under employee stock purchase plan (in shares)		19,000
Issuance of common stock under employee stock purchase plan	1,335	$ 0	1,335
Issuance of common stock under share-based award plans (in shares)		426,000
Issuance of common stock under share-based award plans	23,159	$ 4	23,155
Stock-based compensation	$ 14,138		14,138
Ending balance (in shares) at Mar. 31, 2025	124,783,725	124,784,000
Ending balance at Mar. 31, 2025	$ 2,257,852	$ 1,247	$ 1,558,125	$ 737,020	$ (38,540)

XML

Consolidated Condensed Statements of Cash Flows (unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Cash flows from operating activities:
Net income	$ 151,517	$ 131,400
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	7,927	8,389
Amortization	10,710	10,386
Equity in earnings of unconsolidated affiliate	(28,747)	(31,643)
Distributions received from unconsolidated affiliate	34,860	33,147
Stock-based compensation	14,138	11,059
Provision for losses on receivables	420	502
Deferred income tax expense	(4,142)	(7,150)
Net gain from investments	(493)	(2,256)
Change in other long-term liabilities	508	850
Change in other assets	(1,213)	(7,800)
Contract costs capitalized, net of amortization	(2,291)	221
Contingent consideration fair value adjustments	(1,351)	0
Other	33	(2,068)
Change in current assets and liabilities:
Receivables from investment products	4,658	280
Receivables	(43,091)	(60,386)
Other current assets	(2,674)	1,268
Advances due from unconsolidated affiliate	54,513	51,986
Accounts payable	(1,913)	(328)
Accrued liabilities	(48,966)	(25,471)
Deferred revenue	2,077	(92)
Total adjustments	(5,037)	(19,106)
Net cash provided by operating activities	146,480	112,294
Cash flows from investing activities:
Additions to property and equipment	(8,666)	(13,072)
Additions to capitalized software	(7,362)	(6,277)
Purchases of marketable securities	(50,113)	(41,650)
Purchases of interest in limited partnerships	(566)	0
Prepayments and maturities of marketable securities	30,949	32,116
Proceeds from fixed asset dispositions	1,165	1,180
Other investing activities	(3,757)	(9,931)
Net cash used in investing activities	(38,350)	(37,634)
Cash flows from financing activities:
Purchase and retirement of common stock	(203,723)	(46,825)
Proceeds from issuance of common stock	24,494	45,027
Payment of dividends	(62,319)	(60,359)
Net cash used in financing activities	(241,548)	(62,157)
Effect of exchange rate changes on cash, cash equivalents and restricted cash	4,212	(572)
Net (decrease) increase in cash, cash equivalents and restricted cash	(129,206)	11,931
Cash, cash equivalents and restricted cash, beginning of period	840,193	834,998
Cash, cash equivalents and restricted cash, end of period	$ 710,987	$ 846,929

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Summary of Significant Accounting Policies

3 Months Ended

Mar. 31, 2025

Accounting Policies [Abstract]

Summary of Significant Accounting Policies

Summary of Significant Accounting Policies

Nature of Operations

SEI Investments Company (the Company), a Pennsylvania corporation, is a leading global provider of financial technology, operations, and asset management services within the financial services industry.

Investment processing platforms provide technologies and business process outsourcing services for wealth managers. These solutions include investment advisory, client relationship, and other technology-enabled capabilities for the front office; administrative and investment services for the middle office; and accounting and processing services for the back office. Revenues from investment processing services are recognized in Information processing and software servicing fees on the accompanying Consolidated Statements of Operations.

Investment operations platforms provide business process outsourcing services for investment managers and asset owners. These platforms support a broad range of traditional and alternative investments and provide technology-enabled information analytics and investor capabilities for the front office; administrative and investment services for the middle office; and fund administration and accounting services for the back office. Revenues from investment operations services are recognized in Asset management, administration and distribution fees on the accompanying Consolidated Statements of Operations.

Investment management platforms provide comprehensive solutions for managing personal and institutional wealth. These platforms include goals-based investment strategies; SEI-sponsored and third-party investment products, including mutual funds, ETFs, collective investment products, alternative investment portfolios and separately managed accounts (SMA); and other market-specific advice, technology and operational components. These services are offered to wealth managers as part of a complete goals-based investment program for their end-investors. For institutional investors, the Company provides an Outsourced Chief Investment Officer (OCIO) platform and Unbundled OCIO platform that include investment management programs, as well as advisory and administrative services. Revenues from investment management services are recognized in Asset management, administration and distribution fees on the accompanying Consolidated Statements of Operations.

Basis of Presentation

The accompanying Consolidated Financial Statements have been prepared in accordance with accounting principles generally accepted in the United States of America. Certain financial information and accompanying note disclosure normally included in the Company’s Annual Report on Form 10-K have been condensed or omitted. The interim financial information is unaudited but reflects all adjustments (consisting of only normal recurring adjustments) which are, in the opinion of management, necessary for a fair statement of financial position of the Company as of March 31, 2025, the results of operations for the three months ended March 31, 2025 and 2024, and cash flows for the three months ended March 31, 2025 and 2024. These interim Consolidated Financial Statements should be read in conjunction with the audited Consolidated Financial Statements and the Notes to the Consolidated Financial Statements included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2024.

There have been no significant changes in significant accounting policies during the three months ended March 31, 2025 as compared to the significant accounting policies described in the Company's Annual Report on Form 10-K for the year ended December 31, 2024.

Variable Interest Entities

The Company or its affiliates have created numerous investment products for its clients in various types of legal entity structures. The Company serves as the Manager, Administrator and Distributor for these investment products and may also serve as the Trustee for some of the investment products. The Company receives asset management, distribution, administration and custodial fees for these services. Clients are the equity investors and participate in proportion to their ownership percentage in the net income or loss and net capital gains or losses of the products, and, on liquidation, will participate in proportion to their ownership percentage in the remaining net assets of the products after satisfaction of outstanding liabilities. The Company has concluded that it is not the primary beneficiary of the entities and, therefore, is not required to consolidate any of the pooled investment vehicles for which it receives asset management, distribution, administration and custodial fees under the VIE model.

The Company is a party to expense limitation agreements with certain SEI-sponsored money market funds subject to Rule 2a-7 of the Investment Company Act of 1940 which establish a maximum level of ordinary operating expenses incurred by the fund in any fiscal year including, but not limited to, fees of the administrator or its affiliates. Under the terms of these

agreements, the Company waived $4,133 and $4,299 in fees during the three months ended March 31, 2025 and 2024, respectively.

Revenue Recognition

Revenue is recognized when the transfer of control of promised goods or services under the terms of a contract with customers are satisfied in an amount that reflects the consideration to which the Company expects to be entitled in exchange for those promised goods or services. Certain portions of the Company’s revenues involve a third party in providing goods or services to its customers. In such circumstances, the Company must determine whether the nature of its promise to the customer is to provide the underlying goods or services (the Company is the principal in the transaction and reports the transaction gross) or to arrange for a third party to provide the underlying goods or services (the entity is the agent in the transaction and reports the transaction net). See Note 13 for related disclosures regarding revenue recognition.

Cash and Cash Equivalents

The Company considers investment instruments purchased with an original maturity of three months or less to be cash equivalents. Cash and cash equivalents includes $261,392 and $341,311 at March 31, 2025 and December 31, 2024, respectively, invested in SEI-sponsored open-ended money market investment products. See Note 5 for information related to the Company's total investments in SEI-sponsored and non-SEI-sponsored money market investment products and commercial paper classified as cash equivalents.

Restricted Cash

Restricted cash includes $250 at March 31, 2025 and December 31, 2024 segregated for regulatory purposes related to trade-execution services conducted by SEI Investments (Europe) Limited. Restricted cash also includes $52 at March 31, 2025 and December 31, 2024 segregated in special reserve accounts for the benefit of customers of the Company’s broker-dealer subsidiary, SEI Investments Distribution Co. (SIDCO), in accordance with certain rules established by the Securities and Exchange Commission (SEC) for broker-dealers.

Capitalized Software

The Company capitalized $7,362 and $6,277 of software development costs during the three months ended March 31, 2025 and 2024, respectively, to further develop the SEI Wealth PlatformSM (SWP) and for the development of a new platform for the Investment Managers segment. The Company capitalized $4,375 and $3,795 of software development costs for significant enhancements to SWP during the three months ended March 31, 2025 and 2024, respectively. As of March 31, 2025, the net book value of SWP was $201,896, which includes $4,375 of capitalized software development costs in-progress associated with future releases. SWP has a weighted average remaining life of 8.0 years. Amortization expense for SWP was $7,099 and $6,757 during the three months ended March 31, 2025 and 2024, respectively.

The Company also capitalized $2,987 and $2,482 of software development costs during the three months ended March 31, 2025 and 2024, respectively, related to the development of a new platform for the Investment Managers segment. Capitalized software development costs in-progress associated with this platform were $33,800 as of March 31, 2025. The platform is not yet ready for use.

Earnings per Share

The calculations of basic and diluted earnings per share for the three months ended March 31, 2025 and 2024 are:

	Three Months Ended March 31,
	2025		2024
Net income	$	151,517	$	131,400
Shares used to compute basic earnings per common share	126,561,000		131,417,000
Dilutive effect of stock awards	2,889,000		1,328,000
Shares used to compute diluted earnings per common share	129,450,000		132,745,000
Basic earnings per common share	$	1.20	$	1.00
Diluted earnings per common share	$	1.17	$	0.99

During the three months ended March 31, 2025 and 2024, employee stock options to purchase 5,834,000 and 10,912,000 shares of common stock with an average exercise price of $65.95 and $61.05, respectively, were outstanding but not included in the computation of diluted earnings per common share. These options for the three month periods were not included in the computation of diluted earnings per common share because either the performance conditions have not been satisfied or would not have been satisfied if the reporting date was the end of the contingency period or the options'

exercise price was greater than the average market price of the Company’s common stock and the effect on diluted earnings per common share would have been anti-dilutive.

Assets Held for Sale

The Company accounts for assets held for sale in accordance with Accounting Standards Codification (ASC) Subtopic 360-10, Impairment or Disposal of Long-Lived Assets (ASC 360-10). The Company classifies long-lived assets or disposal groups as held for sale if the carrying amounts will be recovered principally through a sale rather than through continuing use. The criteria for held for sale classification is regarded as met only when the sale is highly probable and the asset or the disposal group is available for immediate sale in its present condition. Actions required to complete the sale should indicate that it is unlikely that significant changes to the sale will be made or that the sale will be withdrawn.

The Company initially measures assets classified as held for sale at the lower of its carrying value or fair value less any costs to sell and recognizes any loss in the period in which the held for sale criteria are met. Gains are not recognized until the date of sale. The Company ceases depreciation and amortization of long-lived assets upon their designation as held for sale and subsequently assesses fair value less any costs to sell at each reporting period until the asset is no longer classified as held for sale. See Note 14 for related disclosures regarding the Company's assets held for sale.

New Accounting Pronouncements

In December 2023, the FASB issued ASU 2023-09, Income Taxes (Topic 740): Improvement to Income Tax Disclosures (ASU 2023-09) to enhance the transparency and decision usefulness of income tax disclosures. ASU 2023-09 is effective for annual periods beginning after December 15, 2024 on a prospective basis. Early adoption is permitted. The Company does not expect ASU 2023-09 to have a significant impact on its annual consolidated financial statements and related disclosures.

In November 2024, the FASB issued ASU 2024-03, Income Statement—Reporting Comprehensive Income—Expense Disaggregation Disclosures (Subtopic 220-40): Disaggregation of Income Statement Expenses (ASU 2024-03) and in January 2025, the FASB issued ASU 2025-01, Income Statement—Reporting Comprehensive Income—Expense Disaggregation Disclosures (Subtopic 220-40): Clarifying the Effective Date (ASU 2025-01), which clarified the effective date of ASU 2024-03. This standard requires new disclosures to disaggregate prescribed natural expenses underlying any income statement caption. ASU 2024-03 is effective for annual periods beginning after December 15, 2026 on a prospective basis and interim periods beginning after December 15, 2027. Early adoption is permitted. The Company is currently evaluating the impact of adopting the guidance on its consolidated financial statements and related disclosures.

Reclassifications

Certain prior year amounts have been reclassified to conform to current year presentation.

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Equity Method Investments

3 Months Ended

Mar. 31, 2025

Equity Method Investments and Joint Ventures [Abstract]

Equity Method Investments

Equity Method Investments

LSV Asset Management

The Company has an investment in LSV Asset Management (LSV), a registered investment advisor that provides investment advisory services primarily to institutions, including pension plans and investment companies. LSV is currently an investment sub-advisor for a limited number of SEI-sponsored investment products. The Company's partnership interest in LSV as of March 31, 2025 was 38.6%. The Company’s interest in the net assets of LSV is included in Investments on the accompanying Consolidated Balance Sheets and its interest in the earnings of LSV is reflected in Equity in earnings of unconsolidated affiliate on the accompanying Consolidated Statements of Operations.

At March 31, 2025 and December 31, 2024, the Company’s total investment in LSV was $53,673 and $114,299, respectively. The Company's investment includes advances provided to LSV related to their working capital accounts. The Company receives partnership distributions from LSV on a quarterly basis. The Company received partnership distributions from LSV of $34,860 and $33,147 in the three months ended March 31, 2025 and 2024, respectively. As such, the Company considers these distribution payments as returns on investment rather than returns of the Company's original investment in LSV and has therefore classified the associated cash inflows as an operating activity on the Consolidated Statements of Cash Flows.

The Company’s proportionate share in the earnings of LSV was $28,747 and $31,643 during the three months ended March 31, 2025 and 2024, respectively.

These tables contain condensed financial information of LSV:

Condensed Statement of Operations	Three Months Ended March 31,
	2025		2024
Revenues	$	99,928	$	107,349
Net income	74,514		82,012

Condensed Balance Sheets	March 31, 2025		December 31, 2024
Current assets	$	112,698	$	170,055
Non-current assets	5,211		5,313
Total assets	$	117,909	$	175,368
Current liabilities	$	40,897	$	82,356
Non-current liabilities	5,217		5,382
Partners’ capital	71,795		87,630
Total liabilities and partners’ capital	$	117,909	$	175,368

Other Equity Method Investments

The Company's other equity method investment consist of an investment in a non-affiliated limited partnership in which the Company holds a more than minor interest. At March 31, 2025 and December 31, 2024, the Company’s total investment in the limited partnership was $9,483 and is included in Investments on the accompanying Consolidated Balance Sheets (See Note 5).

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Composition of Certain Financial Statement Captions

3 Months Ended

Mar. 31, 2025

Items Included in Consolidated Statement of Financial Condition [Abstract]

Composition of Certain Financial Statement Captions

Composition of Certain Financial Statement Captions

Receivables

Receivables on the accompanying Consolidated Balance Sheets consist of: 

	March 31, 2025		December 31, 2024
Trade receivables	$	139,515	$	143,574
Fees earned, not billed	445,399		403,514
Other receivables	18,214		21,981
	603,128		569,069
Less: Allowance for doubtful accounts	(1,790)		(1,435)
	$	601,338	$	567,634

Fees earned, not billed represents receivables from contracts with customers earned but unbilled and results from timing differences between services provided and contractual billing schedules. These billing schedules generally provide for fees to be billed on a quarterly basis. In addition, certain fees earned from investment operations services are calculated based on assets under administration that have an extended valuation process. Billings to these clients occur once the asset valuation processes are completed.

Receivables from investment products on the accompanying Consolidated Balance Sheets primarily represent fees receivable for distribution, investment advisory, and administration services to various regulated investment companies and other investment products sponsored by SEI.

Property and Equipment

Property and Equipment on the accompanying Consolidated Balance Sheets consists of:

	March 31, 2025		December 31, 2024
Buildings	$	218,270	$	218,112
Equipment	198,260		196,792
Land	27,456		27,407
Purchased software	164,891		164,659
Furniture and fixtures	22,836		23,068
Leasehold improvements	21,826		22,491
Construction in progress	666		333
	654,205		652,862
Less: Accumulated depreciation	(494,941)		(493,219)
Property and Equipment, net	$	159,264	$	159,643

The Company recognized $7,927 and $8,389 in depreciation expense related to property and equipment for the three months ended March 31, 2025 and 2024, respectively.

Deferred Contract Costs

Deferred contract costs, which primarily consist of deferred sales commissions, were $47,751 and $45,855 as of March 31, 2025 and December 31, 2024, respectively. The Company deferred expenses related to contract costs of $5,410 and $2,391 during the three months ended March 31, 2025 and 2024, respectively. Amortization expense related to deferred contract costs were $3,119 and $2,612 during the three months ended March 31, 2025 and 2024, respectively. Amortization expense related to deferred contract costs is included in Compensation, benefits and other personnel on the accompanying Consolidated Statements of Operations. There were no material impairment losses in relation to deferred contract costs during the three months ended March 31, 2025.

Accrued Liabilities

Accrued liabilities on the accompanying Consolidated Balance Sheets consist of: 

	March 31, 2025		December 31, 2024
Accrued employee compensation	$	51,461	$	129,228
Accrued consulting, outsourcing and professional fees	37,899		32,082
Accrued sub-advisory, distribution and other asset management fees	52,591		53,727
Accrued dividend payable	1,558		63,877
Accrued income taxes	41,463		7,105
Other accrued liabilities	39,724		61,494
Total accrued liabilities	$	224,696	$	347,513

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Fair Value Measurements

3 Months Ended

Mar. 31, 2025

Fair Value Disclosures [Abstract]

Fair Value Measurements

Fair Value Measurements

The fair value of the Company’s financial assets and liabilities is determined in accordance with the fair value hierarchy. The pricing policies and procedures applied to the Company's Level 1 and Level 2 financial assets during the three months ended March 31, 2025 were consistent with those as described in the Company's Annual Report on Form 10-K at December 31, 2024. The Company’s Level 1 financial assets consists mainly of investments in open-end and closed-end investment products that are quoted daily. Level 2 financial assets consist of Government National Mortgage Association (GNMA) mortgage-backed securities held by the Company's wholly-owned limited purpose federal thrift subsidiary, SEI Private Trust Company (SPTC), and Federal Home Loan Bank (FHLB) and other U.S. government agency short-term notes held by SIDCO. The financial assets held by SIDCO were purchased as part of a cash management program requiring only short term, top-tier investment grade government and corporate securities. The financial assets held by SPTC are debt securities issued by GNMA and are backed by the full faith and credit of the U.S. government. These securities were purchased for the sole purpose of satisfying applicable regulatory requirements and have maturity dates which range from 2027 to 2041. The Company's Level 3 financial liabilities at March 31, 2025 and December 31, 2024 consist entirely of the estimated fair value of the contingent considerations resulting from business acquisitions (See Note 12). The fair value of the contingent considerations were determined using a Monte-Carlo simulation model. There were

no transfers of financial assets between levels within the fair value hierarchy during the three months ended March 31, 2025.

The fair value of the Company's investments in funds sponsored by LSV is measured using the net asset value per share (NAV) as a practical expedient. The NAVs of the funds are calculated by the funds' independent custodian and are derived from the fair values of the underlying investments as of the reporting date. The investment funds sponsored by LSV allow for investor redemptions at the end of each calendar month. The investments measured using the NAV as a practical expedient have not been classified in the fair value hierarchy but are presented in the tables below to permit reconciliation to the amounts presented on the accompanying Consolidated Balance Sheets.

The fair value of certain financial assets of the Company was determined using the following inputs:

	At March 31, 2025
	Level 1		Level 2		Level 3		NAV as a Practical Expedient		Total
Assets
Equity securities	$	41,533	$	—	$	—	$	—	$	41,533
Available-for-sale debt securities	—		164,681		—		—		164,681
Securities owned	—		31,174		—		—		31,174
Investment funds sponsored by LSV	—		—		—		8,148		8,148
Investments in limited partnership funds	—		—		—		566		566
Total assets measured at fair value	$	41,533	$	195,855	$	—	$	8,714	$	246,102
Liabilities
Contingent considerations	$	—	$	—	$	11,888	$	—	$	11,888
Total liabilities measured at fair value	$	—	$	—	$	11,888	$	—	$	11,888

	At December 31, 2024
	Level 1		Level 2		Level 3		NAV as a Practical Expedient		Total
Assets
Equity securities	$	40,530	$	—	$	—	$	—	$	40,530
Available-for-sale debt securities	—		143,126		—		—		143,126
Securities owned	—		29,583		—		—		29,583
Investment funds sponsored by LSV	—		—		—		8,129		8,129
Total assets measured at fair value	$	40,530	$	172,709	$	—	$	8,129	$	221,368
Liabilities
Contingent considerations	$	—	$	—	$	14,355	$	—	$	14,355
Total liabilities measured at fair value	$	—	$	—	$	14,355	$	—	$	14,355

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Investments and Other Marketable Securities

3 Months Ended

Mar. 31, 2025

Marketable Securities [Abstract]

Investments and Other Marketable Securities

Investments and Other Marketable Securities

Investments on the accompanying Consolidated Balance Sheets consist of:

	March 31, 2025		December 31, 2024
Available for sale and equity securities	$	206,214	$	183,656
Investments in affiliated funds	8,148		8,129
Investments in limited partnership funds	566		—
Equity method investments (See Note 2)	63,156		123,782
Total	$	278,084	$	315,567

Available For Sale and Equity Securities

Available for sale and equity securities consist of: 

	At March 31, 2025
	Cost Amount		Gross Unrealized Gains		Gross Unrealized (Losses)		Fair Value
Available-for-sale debt securities	$	171,780	$	—	$	(7,099)	$	164,681
SEI-sponsored investment products	33,569		1,944		—		35,513
Equities and other investment products	5,842		178		—		6,020
	$	211,191	$	2,122	$	(7,099)	$	206,214

	At December 31, 2024
	Cost Amount		Gross Unrealized Gains		Gross Unrealized (Losses)		Fair Value
Available-for-sale debt securities	$	154,211	$	—	$	(11,085)	$	143,126
SEI-sponsored investment products	33,029		1,615		—		34,644
Equities and other investment products	5,554		332		—		5,886
	$	192,794	$	1,947	$	(11,085)	$	183,656

Net unrealized losses at March 31, 2025 of available-for-sale debt securities were $5,467 (net of income tax benefit of $1,632). Net unrealized losses at December 31, 2024 of available-for-sale debt securities were $8,536 (net of income tax benefit of $2,549). These unrealized losses are associated with the Company’s investments in mortgage-backed securities issued by GNMA and were caused by interest rate increases (See Note 4). The contractual cash flows of these securities are guaranteed by an agency of the U.S. government. Accordingly, it is expected that the securities would not be settled at a price less than the amortized cost bases of the Company's investments. The Company does not intend to sell the investments and it is not likely that the Company will be required to sell the investments before recovery of their amortized cost bases. These net unrealized losses are reported as a separate component of Accumulated other comprehensive loss on the accompanying Consolidated Balance Sheets.

The following tables provide the scheduled maturities of the Company's available-for-sale debt securities:

	At March 31, 2025
	Cost		Fair Value
Within one year	$	—	$	—
After one year through five years	3,602		3,285
After 5 years through 10 years	19,218		17,698
After 10 years	148,960		143,698
	$	171,780	$	164,681

	At December 31, 2024
	Cost		Fair Value
Within one year	$	—	$	—
After one year through five years	4,132		3,763
After 5 years through 10 years	20,323		18,429
After 10 years	129,756		120,934
	$	154,211	$	143,126

There were no material realized gains or losses from available-for-sale debt securities during the three months ended March 31, 2025 and 2024, respectively.

There were gross realized gains of $303 and $595 from investment products and equities during the three months ended March 31, 2025 and 2024, respectively. There were no material gross realized losses from investment products and equities during the three months ended March 31, 2025 and 2024. Gains and losses from investment products and equities are reflected in Net gain from investments on the accompanying Consolidated Statements of Operations.

Investments in Affiliated Funds

The Company has an investment in funds sponsored by LSV. The Company records this investment at fair value. Unrealized gains and losses from the change in fair value of these funds are recognized in Net gain from investments on the accompanying Consolidated Statements of Operations.

The Company's investment in the funds had a fair value of $8,148 and $8,129 at March 31, 2025 and December 31, 2024, respectively. The Company recognized unrealized gains of $19 and $833 during the three months ended March 31, 2025 and 2024, respectively, from the change in fair value of the funds.

Securities Owned

The Company’s broker-dealer subsidiary, SIDCO, has investments in U.S. government agency securities with maturity dates less than one year. These investments are reflected as Securities owned on the accompanying Consolidated Balance Sheets. Due to specialized accounting practices applicable to investments by broker-dealers, the securities are reported at fair value and changes in fair value are recorded in current period earnings. The securities had a fair value of $31,174 and $29,583 at March 31, 2025 and December 31, 2024, respectively. There were no material net gains or losses related to the securities during the three months ended March 31, 2025 and 2024.

Cash Equivalents

Investments in SEI-sponsored and non-SEI-sponsored money market funds and commercial paper classified as cash equivalents had a fair value of $437,281 and $541,635 at March 31, 2025 and December 31, 2024, respectively. There were no material unrealized or realized gains or losses from these investments during the three months ended March 31, 2025 and 2024. Investments in money market funds and commercial paper are Level 1 assets.

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Line of Credit

3 Months Ended

Mar. 31, 2025

Line of Credit Facility [Abstract]

Line of Credit

Line of Credit

The Company has a five-year $325,000 Credit Agreement (the Credit Facility) with Wells Fargo Bank, N.A., and a syndicate of other lenders. The Credit Facility is scheduled to expire in April 2026, at which time any aggregate principal amount of loans outstanding becomes payable in full. Any borrowings made under the Credit Facility will accrue interest at rates that, at the Company's option, are based on a base rate (the Base Rate) plus a premium that can range from 0.25% to 1.00% or the Adjusted Term Secured Overnight Financing Rate (SOFR) plus a premium that can range from 1.25% to 2.00% depending on the Company’s Leverage Ratio (a ratio of consolidated indebtedness to consolidated EBITDA for the four preceding fiscal quarters, all as defined in the related agreement). The Base Rate is defined as the highest of a) the Prime Rate, b) the Federal Funds Rate plus 0.50% and c) the Adjusted Term SOFR for a one-month tenor in effect on such day plus 1.00%.

The Company also pays quarterly commitment fees based on the unused portion of the Credit Facility. The quarterly fees for the Credit Facility can range from 0.15% of the amount of the unused portion to 0.30%, depending on the Company’s Leverage Ratio. Certain wholly-owned subsidiaries of the Company have guaranteed the obligations of the Company under the agreement. The aggregate amount of the Credit Facility may be increased by an additional $100,000 under certain conditions set forth in the agreement. The Company may issue up to $15,000 in letters of credit under the terms of the Credit Facility. The Company pays a periodic commission fee of 1.25% plus an issuance fee of 0.20% of the aggregate face amount of the outstanding letters of credit issued under the Credit Facility.

The Credit Facility contains covenants with restrictions on the ability of the Company to do transactions with affiliates other than wholly-owned subsidiaries or to incur liens or certain types of indebtedness as defined in the agreement. In the event of a default under the Credit Facility, the Company would also be restricted from paying dividends on, or repurchasing, its common stock without the approval of the lenders. Upon the occurrence of certain financial or economic events, significant corporate events, or certain other events of default constituting an event of default under the Credit Facility, all loans outstanding may be declared immediately due and payable and all commitments under the agreement may be terminated.

The Company was in compliance with all covenants of the Credit Facility during the three months ended March 31, 2025. As of April 10, 2025, the Company had outstanding letters of credit of $4,866 under the Credit Facility. The amount of the Credit Facility that is available for general corporate purposes as of April 10, 2025 was $320,134.

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Shareholders' Equity

3 Months Ended

Mar. 31, 2025

Stockholders' Equity Note [Abstract]

Shareholders' Equity

Shareholders’ Equity

Stock-Based Compensation

The Company has non-qualified stock options and restricted stock units (RSUs) outstanding under its equity compensation plans. The Company recognized stock-based compensation expense in its Consolidated Financial Statements in the three months ended March 31, 2025 and 2024, respectively, as follows: 

	Three Months Ended March 31,
	2025		2024
Stock-based compensation expense	$	14,138	$	11,059
Less: Deferred tax benefit	(2,623)		(2,213)
Stock-based compensation expense, net of tax	$	11,515	$	8,846

The vesting of the Company's RSUs are time-based and are not based on the achievement of performance targets. The majority of the Company's RSUs will vest on the third anniversary of the issuance date. All outstanding stock options have performance-based vesting provisions that tie the vesting of stock options to the Company’s financial performance which are established at the time of grant, as well as a service condition which requires a minimum waiting period from the date of grant. The performance targets are measured annually on December 31. The amount of stock-based compensation expense recognized in the period is based upon management’s estimate of when the financial vesting targets may be achieved. Any change in management’s estimate could result in the remaining amount of stock-based compensation expense to be accelerated, spread out over a longer period, or reversed. This may cause volatility in the recognition of stock-based compensation expense in future periods and could materially affect the Company’s earnings.

As of March 31, 2025, there was approximately $105,462 of unrecognized compensation cost remaining related to unvested employee stock options and restricted stock units that management expects will vest and is being amortized.

The Company issues new common shares associated with the exercise of stock options. The total intrinsic value of options exercised during the three months ended March 31, 2025 was $9,376. The total options exercisable as of March 31, 2025 had an intrinsic value of $153,442. The total intrinsic value for options exercisable is calculated as the difference between the market value of the Company’s common stock as of March 31, 2025 and the weighted average exercise price of the options. The market value of the Company’s common stock as of March 31, 2025 was $77.63 as reported by the Nasdaq Stock Market, LLC. The weighted average exercise price of the options exercisable as of March 31, 2025 was $59.00. Total options that were outstanding as of March 31, 2025 were 14,937,000. Total options that were exercisable as of March 31, 2025 were 8,235,000.

Common Stock Buyback

The Company’s Board of Directors, under multiple authorizations, has authorized the repurchase of common stock on the open market or through private transactions. The Company purchased 2,501,000 shares at a total cost of $192,844 during the three months ended March 31, 2025, which reduced the total shares outstanding of common stock. The cost of stock purchases during the period includes the cost of excise taxes applicable to stock repurchases and certain transactions that settled in the following quarter. On March 18, 2025, the Company's Board of Directors approved an increase in the stock repurchase program by an additional $500,000. As of March 31, 2025, the Company had approximately $476,757 of authorization remaining for the purchase of common stock under the program.

The Company immediately retires its common stock when purchased. Upon retirement, the Company reduces Capital in excess of par value for the average capital per share outstanding and the remainder is charged against Retained earnings. If the Company reduces its Retained earnings to zero, any subsequent purchases of common stock will be charged entirely to Capital in excess of par value.

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Accumulated Other Comprehensive Loss

3 Months Ended

Mar. 31, 2025

Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]

Accumulated Other Comprehensive Loss

Accumulated Other Comprehensive Loss

The components of Accumulated other comprehensive loss, net of tax, are as follows: 

	Foreign Currency Translation Adjustments		Unrealized Gains (Losses) on Investments		Accumulated Other Comprehensive Loss
Balance, January 1, 2025	$	(38,439)	$	(8,536)	$	(46,975)
Other comprehensive income before reclassifications	5,366		3,101		8,467
Amounts reclassified from accumulated other comprehensive loss	—		(32)		(32)
Net current-period other comprehensive income	5,366		3,069		8,435
Balance, March 31, 2025	$	(33,073)	$	(5,467)	$	(38,540)

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Business Segment Information

3 Months Ended

Mar. 31, 2025

Segment Reporting [Abstract]

Business Segment Information

Business Segment Information

The Company's business segments are generally organized around its target markets. The Company’s reportable business segments are:

Investment Managers – Provides an outsourced investment management operating platform to alternative and traditional asset managers, fund companies, and sovereign wealth funds;

Private Banks – Provides outsourced investment processing and investment management platforms to banks and trust institutions, independent wealth advisers, and financial advisors worldwide;

Investment Advisors – Provides investment management and investment processing platforms to affluent investors through a network of independent registered investment advisors, financial planners, and other investment professionals in the United States;

Institutional Investors – Provides Outsourced Chief Investment Officer solutions, including investment management and administrative outsourcing platforms to retirement plan sponsors, healthcare systems, higher education and other not-for-profit organizations worldwide; and

Investments in New Businesses – Focuses on providing investment management solutions to ultra-high-net-worth families residing in the United States; hosted technology services to family offices and financial institutions; developing network and data protection services; entering new markets; and conducting other research and development activities.

The Company's CODM is the chief executive officer who uses the reported measures of each business segment's profit or loss to allocate resources and assess performance by comparing historical, actual and forecasted amounts. The Company's CODM does not evaluate business segments using asset information.

There are no inter-segment revenues for the three months ended March 31, 2025 and 2024. The accounting policies of the reportable business segments are the same as those described in Note 1 to the Consolidated Financial Statements included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2024.

The following tables highlight certain financial information about each of the business segments for the three months ended March 31, 2025 and 2024:

	Investment Managers		Private Banks		Investment Advisors		Institutional Investors		Investments In New Businesses		Total
	For the Three Months Ended March 31, 2025
Total revenue	$	192,048	$	137,714	$	136,576	$	68,506	$	16,500	$	551,344
Less:
Operations & services	86,239		50,286		41,038		20,673		4,961		203,197
Sales, marketing & client service	9,832		8,910		9,195		9,656		4,927		42,520
Technology services & infrastructure	12,752		28,335		8,866		1,549		1,368		52,870
Strategic initiatives & new business development	6,387		22,379		11,708		2,559		5,698		48,731
Other segment expenses (1)	2,001		4,839		1,648		1,433		1,542		11,463
Segment profit (loss)	$	74,837	$	22,965	$	64,121	$	32,636	$	(1,996)	$	192,563

	Investment Managers		Private Banks		Investment Advisors		Institutional Investors		Investments In New Businesses		Total
	For the Three Months Ended March 31, 2024
Total revenue	$	172,653	$	130,137	$	122,718	$	71,778	$	14,293	$	511,579
Less:
Operations & services	78,374		48,262		39,051		21,623		4,918		192,228
Sales, marketing & client service	9,827		10,774		5,220		11,493		4,607		41,921
Technology services & infrastructure	10,454		26,906		8,329		1,477		1,296		48,462
Strategic initiatives & new business development	7,989		21,258		12,548		3,585		6,018		51,398
Other segment expenses (1)	2,906		5,774		1,810		1,931		1,544		13,965
Segment profit (loss)	$	63,103	$	17,163	$	55,760	$	31,669	$	(4,090)	$	163,605

(1) Other segment expenses for each reportable segment includes professional services, occupancy and certain overhead expenses.

A reconciliation of the total segment profit to income from operations on the Consolidated Statements of Operations for the three months ended March 31, 2025 and 2024 is as follows:

	2025		2024
Total segment profit	$	192,563	$	163,605
Corporate overhead expenses	(35,466)		(37,754)
Income from operations	$	157,097	$	125,851

Other income and expense items to reconcile income from operations to income before income taxes on the Consolidated Statements of Operations include net gain from investments, interest and dividend income, interest expense and equity in the earnings of unconsolidated affiliates. These items are not allocated to the Company's segments.

The following tables provide additional information for the three months ended March 31, 2025 and 2024 pertaining to the business segments:

	Capital Expenditures (2)				Depreciation
	2025		2024		2025		2024
Investment Managers	$	6,486	$	7,675	$	62	$	1,579
Private Banks	5,503		6,432		2,259		2,904
Investment Advisors	2,632		3,165		2,025		2,181
Institutional Investors	763		1,119		319		604
Investments in New Businesses	279		416		78		172
Total from business segments	$	15,663	$	18,807	$	4,743	$	7,440
Corporate overhead	365		542		3,184		949
	$	16,028	$	19,349	$	7,927	$	8,389

(2) Capital expenditures include additions to property and equipment and capitalized software.

	Amortization
	2025		2024
Investment Managers	$	202	$	—
Private Banks	5,275		5,111
Investment Advisors	2,419		2,122
Institutional Investors	1,875		1,892
Investments in New Businesses	875		1,182
Total from business segments	$	10,646	$	10,307
Corporate overhead	64		79
	$	10,710	$	10,386

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Income Taxes

3 Months Ended

Mar. 31, 2025

Income Tax Disclosure [Abstract]

Income Taxes

Income Taxes

The gross liability for unrecognized tax benefits at March 31, 2025 and December 31, 2024 was $15,195 and $15,241, respectively, exclusive of interest and penalties, of which $15,103 and $14,886 would affect the effective tax rate if the Company were to recognize the tax benefit.

The Company classifies interest and penalties on unrecognized tax benefits as income tax expense. As of March 31, 2025 and December 31, 2024, the combined amount of accrued interest and penalties related to tax positions taken on tax returns was $1,933 and $1,725, respectively.

	March 31, 2025		December 31, 2024
Gross liability for unrecognized tax benefits, exclusive of interest and penalties	$	15,195	$	15,241
Interest and penalties on unrecognized benefits	1,933		1,725
Total gross uncertain tax positions	$	17,128	$	16,966
Amount included in Current liabilities	$	4,239	$	4,377
Amount included in Other long-term liabilities	12,889		12,589
	$	17,128	$	16,966

The effective income tax rate for the three months ended March 31, 2025 and 2024 differs from the federal income tax statutory rate due to the following:

	Three Months Ended March 31,
	2025		2024
Statutory rate	21.0	%	21.0	%
State taxes, net of federal tax benefit	2.9		2.9
Foreign tax expense and tax rate differential	(0.2)		0.1
Tax benefit from stock option exercises	(0.5)		(1.1)
Other, net	(0.4)		—
	22.8	%	22.9	%

The Company files income tax returns in the United States on a consolidated basis and in many U.S. state and foreign jurisdictions. The Company is subject to examination of income tax returns by the Internal Revenue Service (IRS) and other domestic and foreign tax authorities. The Company is no longer subject to U.S. federal income tax examination for years before 2021 and is no longer subject to state, local or foreign income tax examinations by authorities for years before 2018.

The Company estimates it will recognize $4,239 of gross unrecognized tax benefits. This amount is expected to be paid within one year or to be removed at the expiration of the statute of limitations and resolution of income tax audits and is netted against the current payable account. These unrecognized tax benefits are related to tax positions taken on certain federal, state, and foreign tax returns. However, the timing of the resolution of income tax examinations is highly uncertain, and the amounts ultimately paid, if any, upon resolution of the issues raised by the taxing authorities may differ materially from the amounts accrued for each year. While it is reasonably possible that some issues under examination could be resolved in the next twelve months, based upon the current facts and circumstances, the Company cannot reasonably estimate the timing of such resolution or the total range of potential changes as it relates to the current unrecognized tax benefits that are recorded as part of the Company’s financial statements.

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Commitments and Contingencies

3 Months Ended

Mar. 31, 2025

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

Commitments and Contingencies

In the ordinary course of business, the Company from time to time enters into contracts containing indemnification obligations of the Company. These obligations may require the Company to make payments to another party upon the occurrence of certain events including the failure by the Company to meet its performance obligations under the contract. These contractual indemnification provisions are often standard contractual terms of the nature customarily found in the type of contracts entered into by the Company. In many cases, there are no stated or notional amounts included in the indemnification provisions. There are no amounts reflected on the Consolidated Balance Sheets as of March 31, 2025 and December 31, 2024 related to these indemnifications.

Rubicon Wealth Management

Prior to the relationship termination described in the following sentence, SEI Private Trust Company (SPTC), a wholly-owned operating subsidiary of SEI, held custody accounts for the end-clients of Rubicon Wealth Management LLC, an SPTC investment advisor client (Rubicon). On May 1, 2024, SPTC terminated its client relationship with Rubicon in light of the events associated with the Allegation (as defined below), and notified Rubicon clients with accounts at SPTC that they were required to transfer their accounts to other custodians.

Beginning on July 10, 2024, nine of Rubicon’s clients that had custodial accounts at SPTC filed state civil actions for fraud in the Court of Common Pleas of Montgomery County, Pennsylvania against Rubicon, its founder, Scott Mason, Mr. Mason’s wife, Lynne Mason, and Orchard Park Real Estate Holdings LLC (Orchard Park), a business owned by Mr. Mason. The fraud allegation (the Allegation) is based on the claim that Mr. Mason used Rubicon client funds to invest in Orchard Park, an entity allegedly formed and controlled by Mr. Mason, and that all such invested funds were subsequently withdrawn from Orchard Park by Mr. Mason and were used for his own, extensive personal expenses. The Company is also aware of at least four other cases filed in other jurisdictions against Rubicon and/or the Masons and/or Orchard Park, and there may be additional cases filed against Rubicon and/or the Masons of which the Company is unaware. On January 17, 2025, the SEC charged Mr. Mason, Rubicon, and Orchard Park with violating Section 10(b) of the Securities Exchange Act of 1934 and Rule 10b-5 thereunder, and Mr. Mason and Rubicon with violating Sections 206(1) and (2) of the Investment Advisers Act of 1940 in connection with the Allegation. That same day, the U.S. Attorney’s Office for the Eastern District of Pennsylvania announced criminal charges against Mr. Mason. Mason, Rubicon and Orchard Park have consented to the entry of final judgments in the SEC matter, subject to court approval. On January 28, 2025, Mason pled guilty to nine criminal charges, including wire fraud, securities fraud, investment advisor fraud and filing false tax returns. A sentencing hearing has been scheduled for June 4, 2025.

As of April 16, 2025, eight separate suits have been filed against SPTC in its capacity as custodian for the Rubicon accounts of the plaintiffs (collectively, the Plaintiffs). These actions were also filed in the Court of Common Pleas of Montgomery County, Pennsylvania and are: Star Sitron vs. SEI Private Trust Company, Case No. 2024-17132 (Sitron); Charles Murray vs. SEI Private Trust Company, Case No. 2024-18391 (Murray); James A. Byrne & Sharon Byrne vs. SEI Private Trust Company, Case No. 2024-20612; Melody Pettinelli & Melody Pettinelli as Trustee of the Donald Pettinelli Trust dated 11/7/1996 vs. SEI Private Trust Company, Case. 2024-21377; Norman Love vs. SEI Private Trust Company, Case No. 2024-21361; Stephen Red & Carla Red vs. SEI Private Trust Company, Case No. 2024-21902; Edward A. Tettemer & Lyn K. Tettemer vs. SEI Private Trust Company, Case No. 2024-21827; and Jonathan Klein & Sara Klein vs. SEI Private Trust Company, Case No. 2024- 23294 (collectively, the Rubicon Actions). Based on the complaints that have thus far been filed in the Rubicon Actions, these actions allege several different claims, including breach of contract, breach of fiduciary duty, negligence, violation of Pennsylvania's Unfair Trade Practices and Consumer Protection Law (UTPCPL), and aiding and abetting tortious conduct by SPTC in connection with certain transfers of Plaintiffs’ assets from SPTC custodial accounts to Orchard Park bank accounts. SPTC has been served with complaints in two of the Rubicon Actions, Sitron and Murray. In the remaining six Rubicon Actions, the Plaintiffs have commenced suit but have not filed their formal complaints. The Sitron and Murray cases are both in the early stages, with initial motion practice and discovery now occurring.

On September 12, 2024 the Sitron court issued an initial case management order requiring, among other things, fact discovery to be completed within approximately 18 months and dispositive motions to be filed within 21 months from the commencement of the action. On August 8, 2024, SPTC filed preliminary objections to the plaintiff’s complaint in Sitron. On March 18, 2025, the Sitron court granted in part SPTC’s preliminary objections, dismissing with prejudice Sitron’s UTPCPL claim and claim of aiding and abetting tortious conduct, and denying SPTC’s remaining preliminary objections. On April 14, 2025, the court denied Sitron’s motion for partial reconsideration of the court’s March 18, 2025 order, and on April 14, 2025 the court denied Sitron’s motion to take an immediate appeal of the dismissal of the UTPCPL and aiding and abetting tortious conduct claims. On April 7, 2025, SPTC filed its Answer with New Matter to the Sitron complaint, and filed a writ of summons to join Rubicon, Mason, Orchard Park, and another Rubicon entity as additional defendants in the Sitron action.

On October 7, 2024, the Murray court issued an initial case management order requiring, among other things, fact discovery to be completed within 9 months and dispositive motions to be filed within 12 months of commencement of the action. The parties are seeking to extend those deadlines to 18 months for discovery and 21 months for dispositive motions, which is the schedule in the Sitron matter. On October 16, 2024, SPTC filed preliminary objections to the plaintiff's claims in Murray. On December 13, 2024, the Murray court denied each of SPTC’s preliminary objections. On January 16, 2025, SPTC filed its Answer with New Matter to the Murray complaint. On January 17, 2025, SPTC filed a writ of summons to join Rubicon, Mason, Orchard Park, and another Rubicon entity as additional defendants in the Murray action, and on February 5, 2025, SPTC filed its joinder complaint against those additional defendants. While the Rubicon Actions are in their infancy and the ultimate outcomes of these litigations remain uncertain, SPTC intends to vigorously

defend each of the Rubicon Actions. Currently, SPTC estimates that the aggregate amount of Rubicon client assets transferred at the direction of Mr. Mason from SPTC custodial accounts to Orchard Park bank accounts is approximately $15,000. In the event that SPTC is unsuccessful in its defense of the Rubicon Actions, SEI does not currently believe that the losses associated with such unsuccessful defense would exceed the approximately $15,000 of Rubicon client assets that Mr. Mason directed to be transferred to Orchard Park.

United Kingdom Financial Conduct Authority Supervisory Review of SEI Investments (Europe) Limited

On July 31, 2024, SEI Investments (Europe) Limited (SIEL), an indirectly, wholly-owned operating subsidiary of SEI, received a final requirement notice from the Financial Conduct Authority of the United Kingdom (the FCA) under section 166(3)(a) of the Financial Services and Markets Act 2000 (FSMA), requiring SIEL to engage a “Skilled Person” to undertake a two-stage review of SIEL’s governance arrangements and control environment. In the first stage, the Skilled Person is to provide SIEL and the FCA with a report setting out the Skilled Person’s view of the effectiveness of the control environment and governance arrangements with respect to key risks, as well as the Skilled Person’s recommendations where necessary to address any identified weaknesses (the Section 166 Report). In the second stage, the Skilled Person is to provide an independent view of the quality and completeness of the remediation carried out by SIEL to address any findings from the initial stage and any self-identified weaknesses, including a view on SIEL’s compliance with relevant regulations. The appointment of a Skilled Person is one of the regulatory tools used by the FCA to supervise and monitor firms it regulates. A Skilled Person is an independent third-party expert with the relevant knowledge and experience to undertake a review as described above. This is not an enforcement action nor an investigation but an action taken as part of its supervisory oversight.

In August 2024, SIEL, with the approval of FCA, appointed the firm of Grant Thornton to act as the Skilled Person.

On December 16, 2024, Grant Thornton delivered the first stage of its Skilled Person Report in which it concluded, in summary, that SIEL has an established corporate governance framework and risk management framework that it considered to be appropriate in design for the relative size and complexity of its activities. The Skilled Person Report did however make a number of recommendations for improvements in its governance arrangements with its U.S. parent, and with respect to SIEL’s three lines of defense: resourcing of control functions, strategy and culture.

To provide the necessary assurance to the FCA of SIEL’s focus on addressing the recommendations and concerns, on February 26, 2025, SIEL voluntarily applied to the FCA under section 55L(5)(a) FSMA for the imposition by the FCA of requirements on its regulatory permission (“Voluntary Requirement” / “VREQ”). From February 26, 2025 onwards, SIEL may not, without the FCA’s prior written consent:

•enter into new client agreements (contracts) where a material change in SIEL’s existing suite of propositions, systems or services is required or where significant senior management engagement would be needed; and

•launch a new proposition, product or service that is not already offered by SIEL.

The VREQ does not prevent SIEL from on-boarding new clients where this does not result in significant new service requirements or significant senior management engagement.

The VREQ currently imposed on SIEL is reflected in full on the FCA Register.

SIEL is fully committed to addressing the concerns raised by the FCA. The Company believes the actions SIEL is taking to remediate the issues identified in the Skilled Person Report will not only strengthen its business but also help maintain its focus on achieving positive customer outcomes, positioning SIEL for sustainable future growth.

The VREQ will stay in effect unless and until varied or cancelled by the FCA (either on the application of SIEL or of the FCA’s own volition), until the FCA is satisfied that SIEL has demonstrated that it has addressed the concerns the FCA has communicated to it.

Other Matters

The Company and certain of its subsidiaries are party to various other examinations, investigations, actions and claims arising in the normal course of business that the Company does not believe are material. The Company believes that the ultimate resolution of these matters will not have a material adverse effect on the Company's financial position or the manner in which the Company conducts its business. Currently, the Company does not believe the amount of losses associated with these matters can be estimated. While the Company does not believe that the amount of such losses will, when liquidated or estimable, be material to its financial position, the assumptions may be incorrect and any such loss could have a material adverse effect on the Company's results of operations or the manner in which the Company conducts its business in the period(s) during which the underlying matters are resolved.

Unfunded Commitments to Limited Partnership Funds

The Company has unfunded commitments of $9,434 at March 31, 2025 to limited partnership funds (See Note 5).

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Goodwill and Intangible Assets

3 Months Ended

Mar. 31, 2025

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill and Intangible Assets

Goodwill and Intangible Assets

The changes in the carrying amount of the Company's goodwill by segment are as follows:

	Investment Managers		Investment Advisors		Institutional Investors		Investments in New Businesses		Total
Balance, December 31, 2024	$	55,267	$	33,131	$	61,719	$	20,170	$	170,287
Reclassification of goodwill to assets held for sale	—		—		—		(1,711)		(1,711)
Measurement period adjustments	—		(1,109)		—		—		(1,109)
Foreign currency translation adjustments	1		—		431		—		432
Balance, March 31, 2025	$	55,268	$	32,022	$	62,150	$	18,459	$	167,899

In December 2024, the Company acquired LifeYield, LLC (LifeYield). The total purchase price for LifeYield included a contingent consideration subject to the achievement of certain post-closing performance measurements determined during a time period up to four years from the closing date. During the three months ended March 31, 2025, the Company recorded an adjustment of $1,109 to finalize the calculation of the contingent consideration which reduced the amount of goodwill recorded through the acquisition. Also during the three months ended March 31, 2025, the Company made an adjustment of $254 which reduced the fair value of the contingent consideration. This fair value adjustment to the contingent consideration is reflected in Facilities, supplies and other costs on the Consolidated Statement of Operations. As of March 31, 2025, the fair value of the contingent consideration of $10,465 is included in Other long-term liabilities on the accompanying Consolidated Balance Sheet.

In November 2023, the Company's wholly-owned operating subsidiary in the United Kingdom, SIEL, acquired all of the outstanding equity of XPS Pensions (Nexus) Limited, principal employer and scheme funder of the National Pensions Trust (NPT), from its parent company, XPS Pensions Group PLC (XPS). The total purchase price for XPS Pensions (Nexus) Limited included a contingent consideration payable to the sellers subject to the achievement of certain post-closing performance measurements determined during intervals occurring within two years immediately following the closing date. During the three months ended March 31, 2025, the Company made an adjustment of $1,097 which reduced the fair value of the contingent consideration. The fair value adjustment to the contingent consideration is reflected in Facilities, supplies and other costs on the Consolidated Statement of Operations. As of March 31, 2025, the fair value of the contingent consideration of $1,423 is included in Other long-term liabilities on the accompanying Consolidated Balance Sheet.

The Company recognized $3,449 and $3,403 of amortization expense related to acquired intangible assets during the three months ended March 31, 2025 and 2024, respectively.

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Revenues from Contracts with Customers

3 Months Ended

Mar. 31, 2025

Revenue from Contract with Customer [Abstract]

Revenues from Contracts with Customers

Revenues from Contracts with Customers

The Company’s principal sources of revenues are: (1) asset management, administration and distribution fees primarily earned based upon a contractual percentage of net assets under management or administration; and (2) information processing and software servicing fees that are either recurring and primarily earned based upon the number of trust accounts being serviced or a percentage of the market value of the clients' assets processed on the Company's platforms, or non-recurring and based upon project-oriented contractual agreements related to client implementations.

Disaggregation of Revenue

The following tables provide additional information pertaining to the Company's revenues disaggregated by major product line and primary geographic market based on the location of the use of the products or services for each of the business segments for the three months ended March 31, 2025 and 2024:

	Investment Managers		Private Banks		Investment Advisors		Institutional Investors		Investments In New Businesses		Total
Major Product Lines:	For the Three Months Ended March 31, 2025
Investment management fees from pooled investment products	$	109	$	30,743	$	55,104	$	11,576	$	403	$	97,935
Investment management fees from investment management agreements	—		1,058		52,077		52,237		4,784		110,156
Investment operations fees	180,357		622		20,837		11		1,133		202,960
Investment processing fees - PaaS	1,287		75,856		1,364		623		9		79,139
Investment processing fees - SaaS	—		21,815		1,382		1,836		5,824		30,857
Professional services fees	1,709		6,914		—		—		985		9,608
Account fees and other	8,586		706		5,812		2,223		3,362		20,689
Total revenues	$	192,048	$	137,714	$	136,576	$	68,506	$	16,500	$	551,344
Primary Geographic Markets:
United States	$	170,036	$	93,131	$	136,576	$	57,009	$	15,930	$	472,682
United Kingdom	—		29,767		—		7,999		570		38,336
Canada	—		9,983		—		1,415		—		11,398
Ireland	14,059		4,833		—		2,083		—		20,975
Luxembourg	7,953		—		—		—		—		7,953
Total revenues	$	192,048	$	137,714	$	136,576	$	68,506	$	16,500	$	551,344

	Investment Managers		Private Banks		Investment Advisors		Institutional Investors		Investments In New Businesses		Total
Major Product Lines:	For the Three Months Ended March 31, 2024
Investment management fees from pooled investment products	$	84	$	32,399	$	58,597	$	12,074	$	356	$	103,510
Investment management fees from investment management agreements	—		931		48,161		54,209		4,308		107,609
Investment operations fees	164,189		539		9,644		—		1,478		175,850
Investment processing fees - PaaS	1,258		67,846		1,281		423		10		70,818
Investment processing fees - SaaS	19		23,459		—		2,088		5,097		30,663
Professional services fees	1,017		4,115		—		—		583		5,715
Account fees and other	6,086		848		5,035		2,984		2,461		17,414
Total revenues	$	172,653	$	130,137	$	122,718	$	71,778	$	14,293	$	511,579
Primary Geographic Markets:
United States	$	155,959	$	85,775	$	122,718	$	59,376	$	14,293	$	438,121
United Kingdom	—		29,848		—		9,218		—		39,066
Canada	—		9,799		—		1,471		—		11,270
Ireland	9,906		4,715		—		1,713		—		16,334
Luxembourg	6,788		—		—		—		—		6,788
Total revenues	$	172,653	$	130,137	$	122,718	$	71,778	$	14,293	$	511,579

Investment management fees from pooled investment products - Revenues associated with clients' assets invested in Company-sponsored pooled investment products. Contractual fees are stated as a percentage of the market value of assets under management and collected on a monthly basis. Revenues are recognized in Asset management, administration and distribution fees on the accompanying Consolidated Statements of Operations.

Investment management fees from investment management agreements - Revenues based on assets of clients of the Institutional Investors segment primarily invested in Company-sponsored products. Each client is charged an investment management fee that is stated as a percentage of the market value of all assets under management. The client is billed directly on a quarterly basis. Revenues are recognized in Asset management, administration and distribution fees on the accompanying Consolidated Statements of Operations.

Revenues associated with the separately managed account program offered through registered investment advisors located throughout the United States. The contractual fee is stated as a percentage of the market value of all assets invested in the separately managed account and collected on a quarterly basis. Revenues are recognized in Asset management, administration and distribution fees on the accompanying Consolidated Statements of Operations.

Investment operations fees - Revenues earned from accounting and administrative services, distribution support services and regulatory and compliance services to investment management firms and family offices. The Company contracts directly with the investment management firm or family office. The contractual fees are stated as a percentage of net assets under administration and billed when asset valuations are finalized. Also includes income from client cash balances held in the FDIC-insured accounts through the SEI Integrated Cash program. Revenues are recognized in Asset management, administration and distribution fees on the accompanying Consolidated Statements of Operations.

Investment processing fees - Platform as a Service - Revenues associated with clients that outsource their entire investment operation and back-office processing functions. Through the use of the Company's proprietary platforms, the Company assumes all back-office investment processing services including investment processing, custody and safekeeping of assets, income collections, securities settlement and other related trust activities. The contractual fee is based on a monthly fee plus additional fees determined on a per-account or per-transaction basis. Contractual fees can also be stated as a percentage of the value of assets processed on the Company's platforms each month as long as the fee is in excess of a monthly contractual minimum. The client is billed directly on a monthly basis. Revenues are recognized in Information processing and software servicing fees on the accompanying Consolidated Statements of Operations.

Revenues associated with clients of the mutual fund trading solution are fees recognized for shareholder services and related services through the use of the Company's proprietary platform or through third-party vendor agreements. Contractual fees are stated as a percentage of the value of total assets or positions processed on the Company's platform or subject to third-party vendor agreements each month. Fees are billed and collected on a monthly and quarterly basis. These revenues were previously classified under Account fees and other in 2023 and have been reclassified to conform to the current year presentation.

Investment processing fees - Software as a Service - Revenues associated with clients of the Private Banks segment for application software services. Clients retain responsibility for all investment operations, client administration and other back-office trust operations. The contractual fee is based on a monthly fee plus additional fees determined on a per-account or per-transaction basis. The client is billed directly on a monthly basis.

Revenues associated with clients of the Investments in New Businesses segment processed on the Archway PlatformSM are fees for hosted technology services to family offices and financial institutions. The Archway Platform is an integrated technology platform used for investment, operations, accounting and client reporting by these institutions. The contractual fee is based on a monthly subscription fee to access the Archway Platform along with additional fees on a per transaction basis.

Revenues associated with clients of the Institutional Investors segment processed on the SEI NovusSM portfolio intelligence tool are fees for data management, performance measurement, reporting, and risk analytics. The contractual fee is based on a fixed fee to access SEI Novus and includes fees for integration of historical fund data and custom reporting.

All revenues from investment processing fees are recognized in Information processing and software servicing fees on the accompanying Consolidated Statements of Operations.

Professional services fees - Revenues associated with the business services migration for investment processing clients of the Private Banks segment and investment operations clients of the Investment Managers segment. In addition, Professional services include other services such as business transformation consulting. Typically fees are stated as a contractual fixed fee. The client is billed directly and fees are collected according to the terms of the agreement.

Account fees and other - Revenues associated with custody account servicing, account terminations, reimbursements received for out-of-pocket expenses, and other fees for the provision of ancillary services.

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Assets Held for Sale

3 Months Ended

Mar. 31, 2025

Discontinued Operations and Disposal Groups [Abstract]

Assets Held for Sale

Assets Held for Sale

On February 27, 2025, the Company and Aquiline Capital Partners LP (Aquiline), a private investment firm specializing in financial services and technology, announced that the companies have entered into a definitive agreement for Aquiline to acquire the Company's Family Office Services business. The total purchase price is $120,000 to be paid in cash at closing, and the transaction is expected to close during the second quarter 2025, subject to applicable regulatory approval and other customary closing conditions. The purchase price is subject to adjustments for the transfer of working capital accounts and funding of liabilities by the Company at closing. In connection with the agreement, the companies also entered into a transition services agreement whereby the Company will provide certain information technology, administrative and operational services to Aquiline for a period of time after the closing of the transaction to assist in the transfer of services.

As of March 31, 2025, the Company has identified assets within the disposal group with carrying amounts that are expected to be recovered principally through the transaction with Aquiline rather than through continuing use. As such, these assets within the disposal group have been classified as held for sale on the accompanying Consolidated Balance Sheet. The results of operations of the Company's Family Office Services business is reported in the Investments in New Businesses segment. Management does not believe the expected transaction represents a strategic shift that will have a significant impact on the Company's operations and financial results, and as such, the Family Office Services business is not considered a discontinued operation.

The Company's assets held for sale and related liabilities on the accompanying Consolidated Balance Sheet consist of:

Assets Held for Sale

	March 31, 2025
Receivables, net of allowance for doubtful accounts of $131	$	8,427
Property and equipment, net of accumulated depreciation of $2,144	210
Operating lease right-of-use assets	2,848
Capitalized software, net	492
Goodwill	1,711
Intangible Assets, net of accumulated amortization of $21,717	8,413
Deferred contract costs	395
Other assets, net	269
Total assets held for sale	$	22,765

Liabilities Related to Assets Held for Sale

	March 31, 2025
Accrued liabilities	$	1,188
Operating lease liabilities	2,993
Deferred revenue	202
Total liabilities related to assets held for sale	$	4,383

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Pay vs Performance Disclosure - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Pay vs Performance Disclosure
Net income	$ 151,517	$ 131,400

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Insider Trading Arrangements	3 Months Ended
	Mar. 31, 2025
Trading Arrangements, by Individual
Rule 10b5-1 Arrangement Adopted	false
Non-Rule 10b5-1 Arrangement Adopted	false
Rule 10b5-1 Arrangement Terminated	false
Non-Rule 10b5-1 Arrangement Terminated	false

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Summary of Significant Accounting Policies (Policies)

3 Months Ended

Mar. 31, 2025

Accounting Policies [Abstract]

Basis of Presentation

Basis of Presentation

The accompanying Consolidated Financial Statements have been prepared in accordance with accounting principles generally accepted in the United States of America. Certain financial information and accompanying note disclosure normally included in the Company’s Annual Report on Form 10-K have been condensed or omitted. The interim financial information is unaudited but reflects all adjustments (consisting of only normal recurring adjustments) which are, in the opinion of management, necessary for a fair statement of financial position of the Company as of March 31, 2025, the results of operations for the three months ended March 31, 2025 and 2024, and cash flows for the three months ended March 31, 2025 and 2024. These interim Consolidated Financial Statements should be read in conjunction with the audited Consolidated Financial Statements and the Notes to the Consolidated Financial Statements included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2024.

Variable Interest Entities

Variable Interest Entities

The Company or its affiliates have created numerous investment products for its clients in various types of legal entity structures. The Company serves as the Manager, Administrator and Distributor for these investment products and may also serve as the Trustee for some of the investment products. The Company receives asset management, distribution, administration and custodial fees for these services. Clients are the equity investors and participate in proportion to their ownership percentage in the net income or loss and net capital gains or losses of the products, and, on liquidation, will participate in proportion to their ownership percentage in the remaining net assets of the products after satisfaction of outstanding liabilities. The Company has concluded that it is not the primary beneficiary of the entities and, therefore, is not required to consolidate any of the pooled investment vehicles for which it receives asset management, distribution, administration and custodial fees under the VIE model.

The Company is a party to expense limitation agreements with certain SEI-sponsored money market funds subject to Rule 2a-7 of the Investment Company Act of 1940 which establish a maximum level of ordinary operating expenses incurred by the fund in any fiscal year including, but not limited to, fees of the administrator or its affiliates.

Revenue Recognition

Revenue Recognition

Revenue is recognized when the transfer of control of promised goods or services under the terms of a contract with customers are satisfied in an amount that reflects the consideration to which the Company expects to be entitled in exchange for those promised goods or services. Certain portions of the Company’s revenues involve a third party in providing goods or services to its customers. In such circumstances, the Company must determine whether the nature of its promise to the customer is to provide the underlying goods or services (the Company is the principal in the transaction and reports the transaction gross) or to arrange for a third party to provide the underlying goods or services (the entity is the agent in the transaction and reports the transaction net).

Cash and Cash Equivalents

Cash and Cash Equivalents

The Company considers investment instruments purchased with an original maturity of three months or less to be cash equivalents.

Restricted Cash

Restricted Cash

Restricted cash includes $250 at March 31, 2025 and December 31, 2024 segregated for regulatory purposes related to trade-execution services conducted by SEI Investments (Europe) Limited. Restricted cash also includes $52 at March 31, 2025 and December 31, 2024 segregated in special reserve accounts for the benefit of customers of the Company’s broker-dealer subsidiary, SEI Investments Distribution Co. (SIDCO), in accordance with certain rules established by the Securities and Exchange Commission (SEC) for broker-dealers.

Assets Held for Sale

Assets Held for Sale

The Company accounts for assets held for sale in accordance with Accounting Standards Codification (ASC) Subtopic 360-10, Impairment or Disposal of Long-Lived Assets (ASC 360-10). The Company classifies long-lived assets or disposal groups as held for sale if the carrying amounts will be recovered principally through a sale rather than through continuing use. The criteria for held for sale classification is regarded as met only when the sale is highly probable and the asset or the disposal group is available for immediate sale in its present condition. Actions required to complete the sale should indicate that it is unlikely that significant changes to the sale will be made or that the sale will be withdrawn.

The Company initially measures assets classified as held for sale at the lower of its carrying value or fair value less any costs to sell and recognizes any loss in the period in which the held for sale criteria are met. Gains are not recognized until the date of sale. The Company ceases depreciation and amortization of long-lived assets upon their designation as held for sale and subsequently assesses fair value less any costs to sell at each reporting period until the asset is no longer classified as held for sale. See Note 14 for related disclosures regarding the Company's assets held for sale.

New Accounting Pronouncements

New Accounting Pronouncements

In December 2023, the FASB issued ASU 2023-09, Income Taxes (Topic 740): Improvement to Income Tax Disclosures (ASU 2023-09) to enhance the transparency and decision usefulness of income tax disclosures. ASU 2023-09 is effective for annual periods beginning after December 15, 2024 on a prospective basis. Early adoption is permitted. The Company does not expect ASU 2023-09 to have a significant impact on its annual consolidated financial statements and related disclosures.

In November 2024, the FASB issued ASU 2024-03, Income Statement—Reporting Comprehensive Income—Expense Disaggregation Disclosures (Subtopic 220-40): Disaggregation of Income Statement Expenses (ASU 2024-03) and in January 2025, the FASB issued ASU 2025-01, Income Statement—Reporting Comprehensive Income—Expense Disaggregation Disclosures (Subtopic 220-40): Clarifying the Effective Date (ASU 2025-01), which clarified the effective date of ASU 2024-03. This standard requires new disclosures to disaggregate prescribed natural expenses underlying any income statement caption. ASU 2024-03 is effective for annual periods beginning after December 15, 2026 on a prospective basis and interim periods beginning after December 15, 2027. Early adoption is permitted. The Company is currently evaluating the impact of adopting the guidance on its consolidated financial statements and related disclosures.

Reclassifications

Reclassifications

Certain prior year amounts have been reclassified to conform to current year presentation.

Equity Method Investments

The Company’s interest in the net assets of LSV is included in Investments on the accompanying Consolidated Balance Sheets and its interest in the earnings of LSV is reflected in Equity in earnings of unconsolidated affiliate on the accompanying Consolidated Statements of Operations.

Fair Value of Financial Instruments

The fair value of the Company’s financial assets and liabilities is determined in accordance with the fair value hierarchy. The pricing policies and procedures applied to the Company's Level 1 and Level 2 financial assets during the three months ended March 31, 2025 were consistent with those as described in the Company's Annual Report on Form 10-K at December 31, 2024. The Company’s Level 1 financial assets consists mainly of investments in open-end and closed-end investment products that are quoted daily. Level 2 financial assets consist of Government National Mortgage Association (GNMA) mortgage-backed securities held by the Company's wholly-owned limited purpose federal thrift subsidiary, SEI Private Trust Company (SPTC), and Federal Home Loan Bank (FHLB) and other U.S. government agency short-term notes held by SIDCO. The financial assets held by SIDCO were purchased as part of a cash management program requiring only short term, top-tier investment grade government and corporate securities. The financial assets held by SPTC are debt securities issued by GNMA and are backed by the full faith and credit of the U.S. government. These securities were purchased for the sole purpose of satisfying applicable regulatory requirements and have maturity dates which range from 2027 to 2041. The Company's Level 3 financial liabilities at March 31, 2025 and December 31, 2024 consist entirely of the estimated fair value of the contingent considerations resulting from business acquisitions (See Note 12). The fair value of the contingent considerations were determined using a Monte-Carlo simulation model. There were

no transfers of financial assets between levels within the fair value hierarchy during the three months ended March 31, 2025.

The fair value of the Company's investments in funds sponsored by LSV is measured using the net asset value per share (NAV) as a practical expedient. The NAVs of the funds are calculated by the funds' independent custodian and are derived from the fair values of the underlying investments as of the reporting date. The investment funds sponsored by LSV allow for investor redemptions at the end of each calendar month. The investments measured using the NAV as a practical expedient have not been classified in the fair value hierarchy but are presented in the tables below to permit reconciliation to the amounts presented on the accompanying Consolidated Balance Sheets.

Investments in Affiliated Funds

The fair value of the Company's investments in funds sponsored by LSV is measured using the net asset value per share (NAV) as a practical expedient. The NAVs of the funds are calculated by the funds' independent custodian and are derived from the fair values of the underlying investments as of the reporting date. The investment funds sponsored by LSV allow for investor redemptions at the end of each calendar month. The investments measured using the NAV as a practical expedient have not been classified in the fair value hierarchy but are presented in the tables below to permit reconciliation to the amounts presented on the accompanying Consolidated Balance Sheets.

Available-for-sale Securities

These net unrealized losses are reported as a separate component of Accumulated other comprehensive loss on the accompanying Consolidated Balance Sheets.

Securities Owned

Securities Owned

The Company’s broker-dealer subsidiary, SIDCO, has investments in U.S. government agency securities with maturity dates less than one year. These investments are reflected as Securities owned on the accompanying Consolidated Balance Sheets. Due to specialized accounting practices applicable to investments by broker-dealers, the securities are reported at fair value and changes in fair value are recorded in current period earnings.

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Summary of Significant Accounting Policies (Tables)

3 Months Ended

Mar. 31, 2025

Accounting Policies [Abstract]

Schedule of Calculation of Basic and Diluted Earnings Per Share

The calculations of basic and diluted earnings per share for the three months ended March 31, 2025 and 2024 are:

	Three Months Ended March 31,
	2025		2024
Net income	$	151,517	$	131,400
Shares used to compute basic earnings per common share	126,561,000		131,417,000
Dilutive effect of stock awards	2,889,000		1,328,000
Shares used to compute diluted earnings per common share	129,450,000		132,745,000
Basic earnings per common share	$	1.20	$	1.00
Diluted earnings per common share	$	1.17	$	0.99

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Equity Method Investments (Tables)

3 Months Ended

Mar. 31, 2025

Equity Method Investments and Joint Ventures [Abstract]

Schedule of Equity Method Investments

These tables contain condensed financial information of LSV:

Condensed Statement of Operations	Three Months Ended March 31,
	2025		2024
Revenues	$	99,928	$	107,349
Net income	74,514		82,012

Condensed Balance Sheets	March 31, 2025		December 31, 2024
Current assets	$	112,698	$	170,055
Non-current assets	5,211		5,313
Total assets	$	117,909	$	175,368
Current liabilities	$	40,897	$	82,356
Non-current liabilities	5,217		5,382
Partners’ capital	71,795		87,630
Total liabilities and partners’ capital	$	117,909	$	175,368

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Composition of Certain Financial Statement Captions (Tables)

3 Months Ended

Mar. 31, 2025

Items Included in Consolidated Statement of Financial Condition [Abstract]

Schedule of Receivables

Receivables on the accompanying Consolidated Balance Sheets consist of: 

	March 31, 2025		December 31, 2024
Trade receivables	$	139,515	$	143,574
Fees earned, not billed	445,399		403,514
Other receivables	18,214		21,981
	603,128		569,069
Less: Allowance for doubtful accounts	(1,790)		(1,435)
	$	601,338	$	567,634

Schedule of Property And Equipment

Property and Equipment on the accompanying Consolidated Balance Sheets consists of:

	March 31, 2025		December 31, 2024
Buildings	$	218,270	$	218,112
Equipment	198,260		196,792
Land	27,456		27,407
Purchased software	164,891		164,659
Furniture and fixtures	22,836		23,068
Leasehold improvements	21,826		22,491
Construction in progress	666		333
	654,205		652,862
Less: Accumulated depreciation	(494,941)		(493,219)
Property and Equipment, net	$	159,264	$	159,643

Schedule of Accrued Liabilities

Accrued liabilities on the accompanying Consolidated Balance Sheets consist of: 

	March 31, 2025		December 31, 2024
Accrued employee compensation	$	51,461	$	129,228
Accrued consulting, outsourcing and professional fees	37,899		32,082
Accrued sub-advisory, distribution and other asset management fees	52,591		53,727
Accrued dividend payable	1,558		63,877
Accrued income taxes	41,463		7,105
Other accrued liabilities	39,724		61,494
Total accrued liabilities	$	224,696	$	347,513

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Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2025

Fair Value Disclosures [Abstract]

Schedule of Fair Value Of Certain Financial Assets And Liabilities

The fair value of certain financial assets of the Company was determined using the following inputs:

	At March 31, 2025
	Level 1		Level 2		Level 3		NAV as a Practical Expedient		Total
Assets
Equity securities	$	41,533	$	—	$	—	$	—	$	41,533
Available-for-sale debt securities	—		164,681		—		—		164,681
Securities owned	—		31,174		—		—		31,174
Investment funds sponsored by LSV	—		—		—		8,148		8,148
Investments in limited partnership funds	—		—		—		566		566
Total assets measured at fair value	$	41,533	$	195,855	$	—	$	8,714	$	246,102
Liabilities
Contingent considerations	$	—	$	—	$	11,888	$	—	$	11,888
Total liabilities measured at fair value	$	—	$	—	$	11,888	$	—	$	11,888

	At December 31, 2024
	Level 1		Level 2		Level 3		NAV as a Practical Expedient		Total
Assets
Equity securities	$	40,530	$	—	$	—	$	—	$	40,530
Available-for-sale debt securities	—		143,126		—		—		143,126
Securities owned	—		29,583		—		—		29,583
Investment funds sponsored by LSV	—		—		—		8,129		8,129
Total assets measured at fair value	$	40,530	$	172,709	$	—	$	8,129	$	221,368
Liabilities
Contingent considerations	$	—	$	—	$	14,355	$	—	$	14,355
Total liabilities measured at fair value	$	—	$	—	$	14,355	$	—	$	14,355

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Investments and Other Marketable Securities (Tables)

3 Months Ended

Mar. 31, 2025

Marketable Securities [Abstract]

Schedule of Investments

Investments on the accompanying Consolidated Balance Sheets consist of:

	March 31, 2025		December 31, 2024
Available for sale and equity securities	$	206,214	$	183,656
Investments in affiliated funds	8,148		8,129
Investments in limited partnership funds	566		—
Equity method investments (See Note 2)	63,156		123,782
Total	$	278,084	$	315,567

Schedule of Available For Sale and Equity Securities

Available for sale and equity securities consist of: 

	At March 31, 2025
	Cost Amount		Gross Unrealized Gains		Gross Unrealized (Losses)		Fair Value
Available-for-sale debt securities	$	171,780	$	—	$	(7,099)	$	164,681
SEI-sponsored investment products	33,569		1,944		—		35,513
Equities and other investment products	5,842		178		—		6,020
	$	211,191	$	2,122	$	(7,099)	$	206,214

	At December 31, 2024
	Cost Amount		Gross Unrealized Gains		Gross Unrealized (Losses)		Fair Value
Available-for-sale debt securities	$	154,211	$	—	$	(11,085)	$	143,126
SEI-sponsored investment products	33,029		1,615		—		34,644
Equities and other investment products	5,554		332		—		5,886
	$	192,794	$	1,947	$	(11,085)	$	183,656

Schedule of Available-for-Sale Debt Securities by Maturity

The following tables provide the scheduled maturities of the Company's available-for-sale debt securities:

	At March 31, 2025
	Cost		Fair Value
Within one year	$	—	$	—
After one year through five years	3,602		3,285
After 5 years through 10 years	19,218		17,698
After 10 years	148,960		143,698
	$	171,780	$	164,681

	At December 31, 2024
	Cost		Fair Value
Within one year	$	—	$	—
After one year through five years	4,132		3,763
After 5 years through 10 years	20,323		18,429
After 10 years	129,756		120,934
	$	154,211	$	143,126

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Shareholders' Equity (Tables)

3 Months Ended

Mar. 31, 2025

Stockholders' Equity Note [Abstract]

Schedule of Compensation Cost for Share-based Payment Arrangements, Allocation of Share-based Compensation Costs by Plan

The Company recognized stock-based compensation expense in its Consolidated Financial Statements in the three months ended March 31, 2025 and 2024, respectively, as follows: 

	Three Months Ended March 31,
	2025		2024
Stock-based compensation expense	$	14,138	$	11,059
Less: Deferred tax benefit	(2,623)		(2,213)
Stock-based compensation expense, net of tax	$	11,515	$	8,846

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Accumulated Other Comprehensive Loss (Tables)

3 Months Ended

Mar. 31, 2025

Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]

Schedule Of Accumulated Other Comprehensive Income (Loss), Net Of Tax

The components of Accumulated other comprehensive loss, net of tax, are as follows: 

	Foreign Currency Translation Adjustments		Unrealized Gains (Losses) on Investments		Accumulated Other Comprehensive Loss
Balance, January 1, 2025	$	(38,439)	$	(8,536)	$	(46,975)
Other comprehensive income before reclassifications	5,366		3,101		8,467
Amounts reclassified from accumulated other comprehensive loss	—		(32)		(32)
Net current-period other comprehensive income	5,366		3,069		8,435
Balance, March 31, 2025	$	(33,073)	$	(5,467)	$	(38,540)

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Business Segment Information (Tables)

3 Months Ended

Mar. 31, 2025

Segment Reporting [Abstract]

Schedule of Financial Information About Business Segments

The following tables highlight certain financial information about each of the business segments for the three months ended March 31, 2025 and 2024:

	Investment Managers		Private Banks		Investment Advisors		Institutional Investors		Investments In New Businesses		Total
	For the Three Months Ended March 31, 2025
Total revenue	$	192,048	$	137,714	$	136,576	$	68,506	$	16,500	$	551,344
Less:
Operations & services	86,239		50,286		41,038		20,673		4,961		203,197
Sales, marketing & client service	9,832		8,910		9,195		9,656		4,927		42,520
Technology services & infrastructure	12,752		28,335		8,866		1,549		1,368		52,870
Strategic initiatives & new business development	6,387		22,379		11,708		2,559		5,698		48,731
Other segment expenses (1)	2,001		4,839		1,648		1,433		1,542		11,463
Segment profit (loss)	$	74,837	$	22,965	$	64,121	$	32,636	$	(1,996)	$	192,563

	Investment Managers		Private Banks		Investment Advisors		Institutional Investors		Investments In New Businesses		Total
	For the Three Months Ended March 31, 2024
Total revenue	$	172,653	$	130,137	$	122,718	$	71,778	$	14,293	$	511,579
Less:
Operations & services	78,374		48,262		39,051		21,623		4,918		192,228
Sales, marketing & client service	9,827		10,774		5,220		11,493		4,607		41,921
Technology services & infrastructure	10,454		26,906		8,329		1,477		1,296		48,462
Strategic initiatives & new business development	7,989		21,258		12,548		3,585		6,018		51,398
Other segment expenses (1)	2,906		5,774		1,810		1,931		1,544		13,965
Segment profit (loss)	$	63,103	$	17,163	$	55,760	$	31,669	$	(4,090)	$	163,605

(1) Other segment expenses for each reportable segment includes professional services, occupancy and certain overhead expenses.

Schedule of Reconciliation of Total Operating Profit Reported for Business Segments to Income from Operations in Consolidated Statements of Operations

A reconciliation of the total segment profit to income from operations on the Consolidated Statements of Operations for the three months ended March 31, 2025 and 2024 is as follows:

	2025		2024
Total segment profit	$	192,563	$	163,605
Corporate overhead expenses	(35,466)		(37,754)
Income from operations	$	157,097	$	125,851

Schedule of Additional Information Pertaining to Business Segments

The following tables provide additional information for the three months ended March 31, 2025 and 2024 pertaining to the business segments:

	Capital Expenditures (2)				Depreciation
	2025		2024		2025		2024
Investment Managers	$	6,486	$	7,675	$	62	$	1,579
Private Banks	5,503		6,432		2,259		2,904
Investment Advisors	2,632		3,165		2,025		2,181
Institutional Investors	763		1,119		319		604
Investments in New Businesses	279		416		78		172
Total from business segments	$	15,663	$	18,807	$	4,743	$	7,440
Corporate overhead	365		542		3,184		949
	$	16,028	$	19,349	$	7,927	$	8,389

(2) Capital expenditures include additions to property and equipment and capitalized software.

	Amortization
	2025		2024
Investment Managers	$	202	$	—
Private Banks	5,275		5,111
Investment Advisors	2,419		2,122
Institutional Investors	1,875		1,892
Investments in New Businesses	875		1,182
Total from business segments	$	10,646	$	10,307
Corporate overhead	64		79
	$	10,710	$	10,386

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Income Taxes (Tables)

3 Months Ended

Mar. 31, 2025

Income Tax Disclosure [Abstract]

Schedule of Interest And Penalties

	March 31, 2025		December 31, 2024
Gross liability for unrecognized tax benefits, exclusive of interest and penalties	$	15,195	$	15,241
Interest and penalties on unrecognized benefits	1,933		1,725
Total gross uncertain tax positions	$	17,128	$	16,966
Amount included in Current liabilities	$	4,239	$	4,377
Amount included in Other long-term liabilities	12,889		12,589
	$	17,128	$	16,966

Schedule of Effective Income Tax Rate Reconciliation

The effective income tax rate for the three months ended March 31, 2025 and 2024 differs from the federal income tax statutory rate due to the following:

	Three Months Ended March 31,
	2025		2024
Statutory rate	21.0	%	21.0	%
State taxes, net of federal tax benefit	2.9		2.9
Foreign tax expense and tax rate differential	(0.2)		0.1
Tax benefit from stock option exercises	(0.5)		(1.1)
Other, net	(0.4)		—
	22.8	%	22.9	%

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Goodwill and Intangible Assets (Tables)

3 Months Ended

Mar. 31, 2025

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill

The changes in the carrying amount of the Company's goodwill by segment are as follows:

	Investment Managers		Investment Advisors		Institutional Investors		Investments in New Businesses		Total
Balance, December 31, 2024	$	55,267	$	33,131	$	61,719	$	20,170	$	170,287
Reclassification of goodwill to assets held for sale	—		—		—		(1,711)		(1,711)
Measurement period adjustments	—		(1,109)		—		—		(1,109)
Foreign currency translation adjustments	1		—		431		—		432
Balance, March 31, 2025	$	55,268	$	32,022	$	62,150	$	18,459	$	167,899

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Revenues from Contracts with Customers (Tables)

3 Months Ended

Mar. 31, 2025

Revenue from Contract with Customer [Abstract]

Schedule of Disaggregation of Revenue

The following tables provide additional information pertaining to the Company's revenues disaggregated by major product line and primary geographic market based on the location of the use of the products or services for each of the business segments for the three months ended March 31, 2025 and 2024:

	Investment Managers		Private Banks		Investment Advisors		Institutional Investors		Investments In New Businesses		Total
Major Product Lines:	For the Three Months Ended March 31, 2025
Investment management fees from pooled investment products	$	109	$	30,743	$	55,104	$	11,576	$	403	$	97,935
Investment management fees from investment management agreements	—		1,058		52,077		52,237		4,784		110,156
Investment operations fees	180,357		622		20,837		11		1,133		202,960
Investment processing fees - PaaS	1,287		75,856		1,364		623		9		79,139
Investment processing fees - SaaS	—		21,815		1,382		1,836		5,824		30,857
Professional services fees	1,709		6,914		—		—		985		9,608
Account fees and other	8,586		706		5,812		2,223		3,362		20,689
Total revenues	$	192,048	$	137,714	$	136,576	$	68,506	$	16,500	$	551,344
Primary Geographic Markets:
United States	$	170,036	$	93,131	$	136,576	$	57,009	$	15,930	$	472,682
United Kingdom	—		29,767		—		7,999		570		38,336
Canada	—		9,983		—		1,415		—		11,398
Ireland	14,059		4,833		—		2,083		—		20,975
Luxembourg	7,953		—		—		—		—		7,953
Total revenues	$	192,048	$	137,714	$	136,576	$	68,506	$	16,500	$	551,344

	Investment Managers		Private Banks		Investment Advisors		Institutional Investors		Investments In New Businesses		Total
Major Product Lines:	For the Three Months Ended March 31, 2024
Investment management fees from pooled investment products	$	84	$	32,399	$	58,597	$	12,074	$	356	$	103,510
Investment management fees from investment management agreements	—		931		48,161		54,209		4,308		107,609
Investment operations fees	164,189		539		9,644		—		1,478		175,850
Investment processing fees - PaaS	1,258		67,846		1,281		423		10		70,818
Investment processing fees - SaaS	19		23,459		—		2,088		5,097		30,663
Professional services fees	1,017		4,115		—		—		583		5,715
Account fees and other	6,086		848		5,035		2,984		2,461		17,414
Total revenues	$	172,653	$	130,137	$	122,718	$	71,778	$	14,293	$	511,579
Primary Geographic Markets:
United States	$	155,959	$	85,775	$	122,718	$	59,376	$	14,293	$	438,121
United Kingdom	—		29,848		—		9,218		—		39,066
Canada	—		9,799		—		1,471		—		11,270
Ireland	9,906		4,715		—		1,713		—		16,334
Luxembourg	6,788		—		—		—		—		6,788
Total revenues	$	172,653	$	130,137	$	122,718	$	71,778	$	14,293	$	511,579

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Assets Held for Sale (Tables)

3 Months Ended

Mar. 31, 2025

Discontinued Operations and Disposal Groups [Abstract]

Assets and Liabilities Held for Sale, Including Discontinued Operations

The Company's assets held for sale and related liabilities on the accompanying Consolidated Balance Sheet consist of:

Assets Held for Sale

	March 31, 2025
Receivables, net of allowance for doubtful accounts of $131	$	8,427
Property and equipment, net of accumulated depreciation of $2,144	210
Operating lease right-of-use assets	2,848
Capitalized software, net	492
Goodwill	1,711
Intangible Assets, net of accumulated amortization of $21,717	8,413
Deferred contract costs	395
Other assets, net	269
Total assets held for sale	$	22,765

Liabilities Related to Assets Held for Sale

	March 31, 2025
Accrued liabilities	$	1,188
Operating lease liabilities	2,993
Deferred revenue	202
Total liabilities related to assets held for sale	$	4,383

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Summary of Significant Accounting Policies - Narrative (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Dec. 31, 2024
Summary of Significant Accounting Policies [Line Items]
Cash and cash equivalents invested in SEI-sponsored money market funds	$ 710,685		$ 839,891
Restricted cash	302		302
Capitalized software development costs	7,362	$ 6,277
Net book value of capitalized software	$ 235,696		236,023
Anti-dilutive employee stock options (in shares)	5,834	10,912
Anti-dilutive employee stock options (in USD per share)	$ 65.95	$ 61.05
Investment Managers
Summary of Significant Accounting Policies [Line Items]
Capitalized software development costs	$ 2,987	$ 2,482
Capitalized software in progress	33,800
SEI Wealth Platform
Summary of Significant Accounting Policies [Line Items]
Capitalized software development costs	4,375	3,795
Net book value of capitalized software	201,896
Capitalized software in progress	4,375
Amortization expense related to the SEI Wealth Platform	$ 7,099	6,757
SEI Wealth Platform | Weighted Average
Summary of Significant Accounting Policies [Line Items]
Estimated useful life of the SEI Wealth Platform	8 years
SEI-Sponsored Open-Ended Money Market Mutual Funds
Summary of Significant Accounting Policies [Line Items]
Cash and cash equivalents invested in SEI-sponsored money market funds	$ 261,392		341,311
SEI Investments (Europe) Limited
Summary of Significant Accounting Policies [Line Items]
Restricted cash	250		250
SEI Investments Distribution Co. (SIDCO)
Summary of Significant Accounting Policies [Line Items]
Restricted cash	52		$ 52
SEI-Sponsored Open-Ended Money Market Mutual Funds
Summary of Significant Accounting Policies [Line Items]
Fees waived	$ 4,133	$ 4,299

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Summary of Significant Accounting Policies - Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Accounting Policies [Abstract]
Net income	$ 151,517	$ 131,400
Shares used to compute basic earnings per common share (in shares)	126,561	131,417
Dilutive effect of stock awards (in shares)	2,889	1,328
Shares used to compute diluted earnings per common share (in shares)	129,450	132,745
Basic earnings per common share (in USD per share)	$ 1.20	$ 1.00
Diluted earnings per common share (in USD per share)	$ 1.17	$ 0.99

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Equity Method Investments - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Dec. 31, 2024
Schedule of Equity Method Investments [Line Items]
Equity method investments	$ 63,156		$ 123,782
Distributions received from LSV	34,860	$ 33,147
Company's share in the earnings of LSV	28,747	$ 31,643
Limited Partner
Schedule of Equity Method Investments [Line Items]
Equity method investments	$ 9,483		9,483
L S V Asset Management
Schedule of Equity Method Investments [Line Items]
Ownership interest in LSV	38.60%
Equity method investments	$ 53,673		$ 114,299

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Equity Method Investments - Condensed Statements of Operations of LSV (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Schedule of Equity Method Investments [Line Items]
Total revenue	$ 551,344	$ 511,579
Equity Method Investment, Nonconsolidated Investee
Schedule of Equity Method Investments [Line Items]
Total revenue	99,928	107,349
Net income	$ 74,514	$ 82,012

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Equity Method Investments - Condensed Balance Sheets of LSV (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Schedule of Equity Method Investments [Line Items]
Current assets	$ 1,478,387	$ 1,551,810
Total Assets	2,566,042	2,684,606
Current liabilities	261,430	380,513
Total Liabilities and Shareholders' Equity	2,566,042	2,684,606
Equity Method Investment, Nonconsolidated Investee
Schedule of Equity Method Investments [Line Items]
Current assets	112,698	170,055
Non-current assets	5,211	5,313
Total Assets	117,909	175,368
Current liabilities	40,897	82,356
Non-current liabilities	5,217	5,382
Partners’ capital	71,795	87,630
Total Liabilities and Shareholders' Equity	$ 117,909	$ 175,368

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Composition of Certain Financial Statement Captions - Receivables (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Items Included in Consolidated Statement of Financial Condition [Abstract]
Trade receivables	$ 139,515	$ 143,574
Fees earned, not billed	445,399	403,514
Other receivables	18,214	21,981
Gross receivables	603,128	569,069
Less: Allowance for doubtful accounts	(1,790)	(1,435)
Receivables, net	$ 601,338	$ 567,634

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Composition of Certain Financial Statement Captions - Property And Equipment (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Property and Equipment [Line Items]
Property and equipment, gross	$ 654,205	$ 652,862
Less: Accumulated depreciation	(494,941)	(493,219)
Property and Equipment, net	159,264	159,643
Buildings
Property and Equipment [Line Items]
Property and equipment, gross	218,270	218,112
Equipment
Property and Equipment [Line Items]
Property and equipment, gross	198,260	196,792
Land
Property and Equipment [Line Items]
Property and equipment, gross	27,456	27,407
Purchased software
Property and Equipment [Line Items]
Property and equipment, gross	164,891	164,659
Furniture and fixtures
Property and Equipment [Line Items]
Property and equipment, gross	22,836	23,068
Leasehold improvements
Property and Equipment [Line Items]
Property and equipment, gross	21,826	22,491
Construction in progress
Property and Equipment [Line Items]
Property and equipment, gross	$ 666	$ 333

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Composition of Certain Financial Statement Captions - Narrative (Details) - USD ($)	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Dec. 31, 2024
Items Included in Consolidated Statement of Financial Condition [Abstract]
Depreciation	$ 7,927,000	$ 8,389,000
Deferred contract costs	47,751,000		$ 45,855,000
Capitalized contract cost, amount capitalized during period	5,410,000	2,391,000
Amortization of deferred contract costs	3,119,000	$ 2,612,000
Capitalized contract cost impairment	$ 0

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Composition of Certain Financial Statement Captions - Accrued Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Items Included in Consolidated Statement of Financial Condition [Abstract]
Accrued employee compensation	$ 51,461	$ 129,228
Accrued consulting, outsourcing and professional fees	37,899	32,082
Accrued sub-advisory, distribution and other asset management fees	52,591	53,727
Accrued dividend payable	1,558	63,877
Accrued income taxes	41,463	7,105
Other accrued liabilities	39,724	61,494
Total accrued liabilities	$ 224,696	$ 347,513

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Fair Value Measurements (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-for-sale securities	$ 164,681	$ 143,126
Securities owned	31,174	29,583
Total assets measured at fair value	246,102	221,368
Contingent considerations	11,888	14,355
Total liabilities measured at fair value	11,888	14,355
Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Securities owned	0	0
Total assets measured at fair value	41,533	40,530
Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Securities owned	31,174	29,583
Total assets measured at fair value	195,855	172,709
Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Contingent considerations	11,888	14,355
Total liabilities measured at fair value	11,888	14,355
NAV as a Practical Expedient
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total assets measured at fair value	8,714	8,129
Equity securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-for-sale securities	41,533	40,530
Equity securities | Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-for-sale securities	41,533	40,530
Equity securities | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-for-sale securities	0	0
Available-for-sale debt securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-for-sale securities	164,681	143,126
Available-for-sale debt securities | Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-for-sale securities	0	0
Available-for-sale debt securities | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-for-sale securities	164,681	143,126
Investment funds sponsored by LSV
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment funds sponsored by LSV	8,148	8,129
Investment funds sponsored by LSV | NAV as a Practical Expedient
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment funds sponsored by LSV	8,148	$ 8,129
Investments in limited partnership funds
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment funds sponsored by LSV	566
Investments in limited partnership funds | NAV as a Practical Expedient
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment funds sponsored by LSV	$ 566

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Investments and Other Marketable Securities - Schedule of Equity Method Investments (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Schedule of Investments [Line Items]
Available for sale and equity securities	$ 206,214	$ 183,656
Investments in affiliated funds	8,148	8,129
Equity method investments (See Note 2)	63,156	123,782
Investments	278,084	315,567
Limited Partnership Funds
Schedule of Investments [Line Items]
Investments in limited partnership funds	$ 566	$ 0

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Investments and Other Marketable Securities - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Dec. 31, 2024
Schedule of Investments [Line Items]
Net unrealized gains (loss)	$ (5,467)		$ (8,536)
Net unrealized gains (losses) income tax expense (benefit)	(1,632)		(2,549)
Mutual funds and equities, gross realized gains	303	$ 595
Securities owned	31,174		29,583
Cash equivalents at fair value	437,281		541,635
Investment Funds Sponsored by LSV
Schedule of Investments [Line Items]
Unrealized gains (losses) on investments	19	$ 833
Investments in limited partnership funds	$ 8,148		$ 8,129

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Investments and Other Marketable Securities - Available for Sale and Equity Securities (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Debt Securities, Available-for-sale [Line Items]
Available-for-sale debt securities, Cost Amount	$ 171,780	$ 154,211
Available for sale debt securities, Fair Value	164,681	143,126
Available for sale and equity securities, Cost Amount	211,191	192,794
Available for sale and equity securities, Gross Unrealized Gains	2,122	1,947
Available for sale and equity securities, Gross Unrealized (Losses)	(7,099)	(11,085)
Available for sale and equity securities, Fair Value	206,214	183,656
Available-for-sale debt securities
Debt Securities, Available-for-sale [Line Items]
Available-for-sale debt securities, Cost Amount	171,780	154,211
Available-for-sale debt securities, Gross Unrealized Gains	0	0
Available-for-sale debt securities, Gross Unrealized (Losses)	(7,099)	(11,085)
Available for sale debt securities, Fair Value	164,681	143,126
SEI-sponsored investment products
Debt Securities, Available-for-sale [Line Items]
Equity securities, FV-NI, Cost Amount	33,569	33,029
Equity securities, FV-NI, Gross Unrealized Gains	1,944	1,615
Equity securities, FV-NI, Gross Unrealized (Losses)	0	0
Equity securities, FV-NI, Fair Value	35,513	34,644
Equities and other investment products
Debt Securities, Available-for-sale [Line Items]
Equity securities, FV-NI, Cost Amount	5,842	5,554
Equity securities, FV-NI, Gross Unrealized Gains	178	332
Equity securities, FV-NI, Gross Unrealized (Losses)	0	0
Equity securities, FV-NI, Fair Value	$ 6,020	$ 5,886

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Investments and Other Marketable Securities - Schedule of Available-for-Sale Debt Securities by Maturity (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Cost
Within one year	$ 0	$ 0
After one year through five years	3,602	4,132
After 5 years through 10 years	19,218	20,323
After 10 years	148,960	129,756
Available-for-sale debt securities, Cost Amount	171,780	154,211
Fair Value
Within one year	0	0
After one year through five years	3,285	3,763
After 5 years through 10 years	17,698	18,429
After 10 years	143,698	120,934
Available for sale debt securities, Fair Value	$ 164,681	$ 143,126

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Line of Credit (Details) - 2021 Credit Facility	3 Months Ended
	Mar. 31, 2025 USD ($) fiscal_quarter	Apr. 10, 2025 USD ($)
Line of Credit Facility [Line Items]
Debt interest rate accrual term, number of preceding fiscal quarters | fiscal_quarter	4
Subsequent Event
Line of Credit Facility [Line Items]
Letters of credit outstanding amount		$ 4,866,000
Line of Credit
Line of Credit Facility [Line Items]
Credit facility term of agreement	5 years
Credit facility maximum borrowing capacity	$ 325,000,000
Credit facility accordion feature, increase limit	$ 100,000,000
Line of Credit | Subsequent Event
Line of Credit Facility [Line Items]
Credit facility remaining borrowing capacity		$ 320,134,000
Line of Credit | Secured Overnight Financing Rate (SOFR)
Line of Credit Facility [Line Items]
Credit facility variable interest rate basis spread	1.00%
Line of Credit | Federal Funds Rate
Line of Credit Facility [Line Items]
Credit facility variable interest rate basis spread	0.50%
Line of Credit | Minimum
Line of Credit Facility [Line Items]
Credit facility commitment fee per annum on daily unused portion	0.15%
Line of Credit | Minimum | Lender's Base Rate Plus Market Spread
Line of Credit Facility [Line Items]
Credit facility variable interest rate basis spread	0.25%
Line of Credit | Minimum | Secured Overnight Financing Rate (SOFR)
Line of Credit Facility [Line Items]
Credit facility variable interest rate basis spread	1.25%
Line of Credit | Maximum
Line of Credit Facility [Line Items]
Credit facility commitment fee per annum on daily unused portion	0.30%
Line of Credit | Maximum | Lender's Base Rate Plus Market Spread
Line of Credit Facility [Line Items]
Credit facility variable interest rate basis spread	1.00%
Line of Credit | Maximum | Secured Overnight Financing Rate (SOFR)
Line of Credit Facility [Line Items]
Credit facility variable interest rate basis spread	2.00%
Letter of Credit
Line of Credit Facility [Line Items]
Credit facility maximum borrowing capacity	$ 15,000,000
Credit facility, commitment fee percentage	1.25%
Credit facility, fronting fee percentage	0.20%

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Shareholders' Equity - Stock-Based Compensation Expense (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Stockholders' Equity Note [Abstract]
Stock-based compensation expense	$ 14,138	$ 11,059
Less: Deferred tax benefit	(2,623)	(2,213)
Stock-based compensation expense, net of tax	$ 11,515	$ 8,846

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Shareholders' Equity - Narrative (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 18, 2025
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost	$ 105,462
Total intrinsic value of options exercised	9,376
Aggregate intrinsic value of options exercisable	$ 153,442
Market value of Company's common stock (in USD per share)	$ 77.63
Weighted average exercise price per share (in USD per share)	$ 59.00
Total options outstanding (in shares)	14,937
Total options exercisable (in shares)	8,235
Common Stock Buyback
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares purchased and retired (in shares)	2,501
Company purchased, cost	$ 192,844
Stock repurchase authorization amount, increase		$ 500,000
Remaining stock repurchase authorization amount	$ 476,757

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Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	$ 2,252,112	$ 2,131,828
Other comprehensive income before reclassifications	8,467
Amounts reclassified from accumulated other comprehensive loss	(32)
Total other comprehensive income (loss), net of tax	8,435	(4,259)
Ending balance	2,257,852	2,259,054
Accumulated Other Comprehensive Loss
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	(46,975)	(37,032)
Total other comprehensive income (loss), net of tax	8,435	(4,259)
Ending balance	(38,540)	$ (41,291)
Foreign Currency Translation Adjustments
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	(38,439)
Other comprehensive income before reclassifications	5,366
Amounts reclassified from accumulated other comprehensive loss	0
Total other comprehensive income (loss), net of tax	5,366
Ending balance	(33,073)
Unrealized Gains (Losses) on Investments
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	(8,536)
Other comprehensive income before reclassifications	3,101
Amounts reclassified from accumulated other comprehensive loss	(32)
Total other comprehensive income (loss), net of tax	3,069
Ending balance	$ (5,467)

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Business Segment Information - Narrative (Details) - USD ($)	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Segment Reporting Information [Line Items]
Total revenue	$ 551,344,000	$ 511,579,000
Intersegment
Segment Reporting Information [Line Items]
Total revenue	$ 0	$ 0

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Business Segment Information - Schedule of Financial Information About Business Segments (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Segment Reporting Information [Line Items]
Total revenue	$ 551,344	$ 511,579
Operations & services	203,197	192,228
Sales, marketing & client service	42,520	41,921
Technology services & infrastructure	52,870	48,462
Strategic initiatives & new business development	48,731	51,398
Other segment expenses	11,463	13,965
Segment profit (loss)	192,563	163,605
Investment Managers
Segment Reporting Information [Line Items]
Total revenue	192,048	172,653
Operations & services	86,239	78,374
Sales, marketing & client service	9,832	9,827
Technology services & infrastructure	12,752	10,454
Strategic initiatives & new business development	6,387	7,989
Other segment expenses	2,001	2,906
Segment profit (loss)	74,837	63,103
Private Banks
Segment Reporting Information [Line Items]
Total revenue	137,714	130,137
Operations & services	50,286	48,262
Sales, marketing & client service	8,910	10,774
Technology services & infrastructure	28,335	26,906
Strategic initiatives & new business development	22,379	21,258
Other segment expenses	4,839	5,774
Segment profit (loss)	22,965	17,163
Investment Advisors
Segment Reporting Information [Line Items]
Total revenue	136,576	122,718
Operations & services	41,038	39,051
Sales, marketing & client service	9,195	5,220
Technology services & infrastructure	8,866	8,329
Strategic initiatives & new business development	11,708	12,548
Other segment expenses	1,648	1,810
Segment profit (loss)	64,121	55,760
Institutional Investors
Segment Reporting Information [Line Items]
Total revenue	68,506	71,778
Operations & services	20,673	21,623
Sales, marketing & client service	9,656	11,493
Technology services & infrastructure	1,549	1,477
Strategic initiatives & new business development	2,559	3,585
Other segment expenses	1,433	1,931
Segment profit (loss)	32,636	31,669
Investments In New Businesses
Segment Reporting Information [Line Items]
Total revenue	16,500	14,293
Operations & services	4,961	4,918
Sales, marketing & client service	4,927	4,607
Technology services & infrastructure	1,368	1,296
Strategic initiatives & new business development	5,698	6,018
Other segment expenses	1,542	1,544
Segment profit (loss)	$ (1,996)	$ (4,090)

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Business Segment Information - Reconciliation of Total Operating Profit (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Segment Reporting [Abstract]
Total segment profit	$ 192,563	$ 163,605
Corporate overhead expenses	(35,466)	(37,754)
Income from operations	$ 157,097	$ 125,851

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Business Segment Information - Schedule Of Additional Information Pertaining To Business Segments (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Segment Reporting Information [Line Items]
Capital Expenditures	$ 16,028	$ 19,349
Depreciation	7,927	8,389
Amortization	10,710	10,386
Operating Segments
Segment Reporting Information [Line Items]
Capital Expenditures	15,663	18,807
Depreciation	4,743	7,440
Amortization	10,646	10,307
Operating Segments | Investment Managers
Segment Reporting Information [Line Items]
Capital Expenditures	6,486	7,675
Depreciation	62	1,579
Amortization	202	0
Operating Segments | Private Banks
Segment Reporting Information [Line Items]
Capital Expenditures	5,503	6,432
Depreciation	2,259	2,904
Amortization	5,275	5,111
Operating Segments | Investment Advisors
Segment Reporting Information [Line Items]
Capital Expenditures	2,632	3,165
Depreciation	2,025	2,181
Amortization	2,419	2,122
Operating Segments | Institutional Investors
Segment Reporting Information [Line Items]
Capital Expenditures	763	1,119
Depreciation	319	604
Amortization	1,875	1,892
Operating Segments | Investments In New Businesses
Segment Reporting Information [Line Items]
Capital Expenditures	279	416
Depreciation	78	172
Amortization	875	1,182
Corporate overhead
Segment Reporting Information [Line Items]
Capital Expenditures	365	542
Depreciation	3,184	949
Amortization	$ 64	$ 79

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Income Taxes - Narrative (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Income Tax Contingency [Line Items]
Gross liability for unrecognized tax benefits, exclusive of interest and penalties	$ 15,195	$ 15,241
Unrecognized tax benefits that would affect effective tax rate	15,103	14,886
Interest and penalties on unrecognized benefits	1,933	$ 1,725
Settlement and Lapse of Statute
Income Tax Contingency [Line Items]
Unrecognized tax benefits within the next twelve months	$ 4,239

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Income Taxes - Interest And Penalties (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Income Tax Disclosure [Abstract]
Gross liability for unrecognized tax benefits, exclusive of interest and penalties	$ 15,195	$ 15,241
Interest and penalties on unrecognized benefits	1,933	1,725
Total gross uncertain tax positions	17,128	16,966
Amount included in Current liabilities	4,239	4,377
Amount included in Other long-term liabilities	12,889	12,589
Total gross uncertain tax positions	$ 17,128	$ 16,966

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Income Taxes - Effective Income Tax Rate Reconciliation (Details)	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Income Tax Disclosure [Abstract]
Statutory rate	21.00%	21.00%
State taxes, net of federal tax benefit	2.90%	2.90%
Foreign tax expense and tax rate differential	(0.20%)	0.10%
Tax benefit from stock option exercises	(0.50%)	(1.10%)
Other, net	(0.40%)	0.00%
Effective income tax rate	22.80%	22.90%

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Commitments and Contingencies (Details) $ in Thousands	Apr. 16, 2025 complaint lawsuit	Mar. 31, 2025 USD ($)	Jan. 28, 2025 charge	Oct. 07, 2024	Sep. 12, 2024	Jul. 10, 2024 client case
Loss Contingencies [Line Items]
Number of criminal charges | charge			9
Limited Partnership Funds
Loss Contingencies [Line Items]
Unfunded commitments		$ 9,434
Rubicon Wealth Management
Loss Contingencies [Line Items]
Number of clients with custodial accounts | client						9
Estimated client assets		15,000
Rubicon Wealth Management | Minimum
Loss Contingencies [Line Items]
Number of additional cases filed | case						4
Loss contingency, estimate of possible loss		$ 15,000
Rubicon Wealth Management | Subsequent Event
Loss Contingencies [Line Items]
Number of suits filed | lawsuit	8
Number of formal complaints filed | complaint	2
Number of formal complaints not yet filed | complaint	6
Rubicon Wealth Management, Star Sitron vs. SEI Private Trust Company | Pending Litigation
Loss Contingencies [Line Items]
Fact discovery, period threshold					18 months
Dispositive motions, period threshold					21 months
Rubicon Wealth Management, Charles Murray vs. SEI Private Trust Company | Pending Litigation
Loss Contingencies [Line Items]
Fact discovery, period threshold				9 months
Dispositive motions, period threshold				12 months

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Goodwill and Intangible Assets - Schedule of Goodwill (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2025 USD ($)
Goodwill [Roll Forward]
Goodwill, beginning balance	$ 170,287
Reclassification of goodwill to assets held for sale	(1,711)
Measurement period adjustments	(1,109)
Foreign currency translation adjustments	432
Goodwill, ending balance	167,899
Investment Managers
Goodwill [Roll Forward]
Goodwill, beginning balance	55,267
Reclassification of goodwill to assets held for sale	0
Measurement period adjustments	0
Foreign currency translation adjustments	1
Goodwill, ending balance	55,268
Investment Advisors
Goodwill [Roll Forward]
Goodwill, beginning balance	33,131
Reclassification of goodwill to assets held for sale	0
Measurement period adjustments	(1,109)
Foreign currency translation adjustments	0
Goodwill, ending balance	32,022
Institutional Investors
Goodwill [Roll Forward]
Goodwill, beginning balance	61,719
Reclassification of goodwill to assets held for sale	0
Measurement period adjustments	0
Foreign currency translation adjustments	431
Goodwill, ending balance	62,150
Investments In New Businesses
Goodwill [Roll Forward]
Goodwill, beginning balance	20,170
Reclassification of goodwill to assets held for sale	(1,711)
Measurement period adjustments	0
Foreign currency translation adjustments	0
Goodwill, ending balance	$ 18,459

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Goodwill and Intangible Assets - Narrative (Details) - USD ($) $ in Thousands	1 Months Ended		3 Months Ended
	Dec. 31, 2024	Nov. 30, 2023	Mar. 31, 2025	Mar. 31, 2024
Business Acquisition [Line Items]
Measurement period adjustments			$ (1,109)
Contingent consideration, adjustment			1,351	$ 0
Amortization expense			3,449	$ 3,403
LifeYield, LLC
Business Acquisition [Line Items]
Contingent consideration, earning period	4 years
Measurement period adjustments			1,109
Contingent consideration, adjustment			254
Contingent consideration			10,465
XPS Pensions (Nexus) Limited
Business Acquisition [Line Items]
Contingent consideration, earning period		2 years
Contingent consideration, adjustment			1,097
Contingent consideration			$ 1,423

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Revenues from Contracts with Customers (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Disaggregation of Revenue [Line Items]
Total revenue	$ 551,344	$ 511,579
United States
Disaggregation of Revenue [Line Items]
Total revenue	472,682	438,121
United Kingdom
Disaggregation of Revenue [Line Items]
Total revenue	38,336	39,066
Canada
Disaggregation of Revenue [Line Items]
Total revenue	11,398	11,270
Ireland
Disaggregation of Revenue [Line Items]
Total revenue	20,975	16,334
Luxembourg
Disaggregation of Revenue [Line Items]
Total revenue	7,953	6,788
Investment management fees from pooled investment products
Disaggregation of Revenue [Line Items]
Total revenue	97,935	103,510
Investment management fees from investment management agreements
Disaggregation of Revenue [Line Items]
Total revenue	110,156	107,609
Investment operations fees
Disaggregation of Revenue [Line Items]
Total revenue	202,960	175,850
Investment processing fees - PaaS
Disaggregation of Revenue [Line Items]
Total revenue	79,139	70,818
Investment processing fees - SaaS
Disaggregation of Revenue [Line Items]
Total revenue	30,857	30,663
Professional services fees
Disaggregation of Revenue [Line Items]
Total revenue	9,608	5,715
Account fees and other
Disaggregation of Revenue [Line Items]
Total revenue	20,689	17,414
Investment Managers
Disaggregation of Revenue [Line Items]
Total revenue	192,048	172,653
Investment Managers | United States
Disaggregation of Revenue [Line Items]
Total revenue	170,036	155,959
Investment Managers | United Kingdom
Disaggregation of Revenue [Line Items]
Total revenue	0	0
Investment Managers | Canada
Disaggregation of Revenue [Line Items]
Total revenue	0	0
Investment Managers | Ireland
Disaggregation of Revenue [Line Items]
Total revenue	14,059	9,906
Investment Managers | Luxembourg
Disaggregation of Revenue [Line Items]
Total revenue	7,953	6,788
Investment Managers | Investment management fees from pooled investment products
Disaggregation of Revenue [Line Items]
Total revenue	109	84
Investment Managers | Investment management fees from investment management agreements
Disaggregation of Revenue [Line Items]
Total revenue	0	0
Investment Managers | Investment operations fees
Disaggregation of Revenue [Line Items]
Total revenue	180,357	164,189
Investment Managers | Investment processing fees - PaaS
Disaggregation of Revenue [Line Items]
Total revenue	1,287	1,258
Investment Managers | Investment processing fees - SaaS
Disaggregation of Revenue [Line Items]
Total revenue	0	19
Investment Managers | Professional services fees
Disaggregation of Revenue [Line Items]
Total revenue	1,709	1,017
Investment Managers | Account fees and other
Disaggregation of Revenue [Line Items]
Total revenue	8,586	6,086
Private Banks
Disaggregation of Revenue [Line Items]
Total revenue	137,714	130,137
Private Banks | United States
Disaggregation of Revenue [Line Items]
Total revenue	93,131	85,775
Private Banks | United Kingdom
Disaggregation of Revenue [Line Items]
Total revenue	29,767	29,848
Private Banks | Canada
Disaggregation of Revenue [Line Items]
Total revenue	9,983	9,799
Private Banks | Ireland
Disaggregation of Revenue [Line Items]
Total revenue	4,833	4,715
Private Banks | Luxembourg
Disaggregation of Revenue [Line Items]
Total revenue	0	0
Private Banks | Investment management fees from pooled investment products
Disaggregation of Revenue [Line Items]
Total revenue	30,743	32,399
Private Banks | Investment management fees from investment management agreements
Disaggregation of Revenue [Line Items]
Total revenue	1,058	931
Private Banks | Investment operations fees
Disaggregation of Revenue [Line Items]
Total revenue	622	539
Private Banks | Investment processing fees - PaaS
Disaggregation of Revenue [Line Items]
Total revenue	75,856	67,846
Private Banks | Investment processing fees - SaaS
Disaggregation of Revenue [Line Items]
Total revenue	21,815	23,459
Private Banks | Professional services fees
Disaggregation of Revenue [Line Items]
Total revenue	6,914	4,115
Private Banks | Account fees and other
Disaggregation of Revenue [Line Items]
Total revenue	706	848
Investment Advisors
Disaggregation of Revenue [Line Items]
Total revenue	136,576	122,718
Investment Advisors | United States
Disaggregation of Revenue [Line Items]
Total revenue	136,576	122,718
Investment Advisors | United Kingdom
Disaggregation of Revenue [Line Items]
Total revenue	0	0
Investment Advisors | Canada
Disaggregation of Revenue [Line Items]
Total revenue	0	0
Investment Advisors | Ireland
Disaggregation of Revenue [Line Items]
Total revenue	0	0
Investment Advisors | Luxembourg
Disaggregation of Revenue [Line Items]
Total revenue	0	0
Investment Advisors | Investment management fees from pooled investment products
Disaggregation of Revenue [Line Items]
Total revenue	55,104	58,597
Investment Advisors | Investment management fees from investment management agreements
Disaggregation of Revenue [Line Items]
Total revenue	52,077	48,161
Investment Advisors | Investment operations fees
Disaggregation of Revenue [Line Items]
Total revenue	20,837	9,644
Investment Advisors | Investment processing fees - PaaS
Disaggregation of Revenue [Line Items]
Total revenue	1,364	1,281
Investment Advisors | Investment processing fees - SaaS
Disaggregation of Revenue [Line Items]
Total revenue	1,382	0
Investment Advisors | Professional services fees
Disaggregation of Revenue [Line Items]
Total revenue	0	0
Investment Advisors | Account fees and other
Disaggregation of Revenue [Line Items]
Total revenue	5,812	5,035
Institutional Investors
Disaggregation of Revenue [Line Items]
Total revenue	68,506	71,778
Institutional Investors | United States
Disaggregation of Revenue [Line Items]
Total revenue	57,009	59,376
Institutional Investors | United Kingdom
Disaggregation of Revenue [Line Items]
Total revenue	7,999	9,218
Institutional Investors | Canada
Disaggregation of Revenue [Line Items]
Total revenue	1,415	1,471
Institutional Investors | Ireland
Disaggregation of Revenue [Line Items]
Total revenue	2,083	1,713
Institutional Investors | Luxembourg
Disaggregation of Revenue [Line Items]
Total revenue	0	0
Institutional Investors | Investment management fees from pooled investment products
Disaggregation of Revenue [Line Items]
Total revenue	11,576	12,074
Institutional Investors | Investment management fees from investment management agreements
Disaggregation of Revenue [Line Items]
Total revenue	52,237	54,209
Institutional Investors | Investment operations fees
Disaggregation of Revenue [Line Items]
Total revenue	11	0
Institutional Investors | Investment processing fees - PaaS
Disaggregation of Revenue [Line Items]
Total revenue	623	423
Institutional Investors | Investment processing fees - SaaS
Disaggregation of Revenue [Line Items]
Total revenue	1,836	2,088
Institutional Investors | Professional services fees
Disaggregation of Revenue [Line Items]
Total revenue	0	0
Institutional Investors | Account fees and other
Disaggregation of Revenue [Line Items]
Total revenue	2,223	2,984
Investments In New Businesses
Disaggregation of Revenue [Line Items]
Total revenue	16,500	14,293
Investments In New Businesses | United States
Disaggregation of Revenue [Line Items]
Total revenue	15,930	14,293
Investments In New Businesses | United Kingdom
Disaggregation of Revenue [Line Items]
Total revenue	570	0
Investments In New Businesses | Canada
Disaggregation of Revenue [Line Items]
Total revenue	0	0
Investments In New Businesses | Ireland
Disaggregation of Revenue [Line Items]
Total revenue	0	0
Investments In New Businesses | Luxembourg
Disaggregation of Revenue [Line Items]
Total revenue	0	0
Investments In New Businesses | Investment management fees from pooled investment products
Disaggregation of Revenue [Line Items]
Total revenue	403	356
Investments In New Businesses | Investment management fees from investment management agreements
Disaggregation of Revenue [Line Items]
Total revenue	4,784	4,308
Investments In New Businesses | Investment operations fees
Disaggregation of Revenue [Line Items]
Total revenue	1,133	1,478
Investments In New Businesses | Investment processing fees - PaaS
Disaggregation of Revenue [Line Items]
Total revenue	9	10
Investments In New Businesses | Investment processing fees - SaaS
Disaggregation of Revenue [Line Items]
Total revenue	5,824	5,097
Investments In New Businesses | Professional services fees
Disaggregation of Revenue [Line Items]
Total revenue	985	583
Investments In New Businesses | Account fees and other
Disaggregation of Revenue [Line Items]
Total revenue	$ 3,362	$ 2,461

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Assets Held for Sale - Narrative (Details) $ in Thousands	Jun. 30, 2025 USD ($)
Forecast | Subsequent Event
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Purchase price	$ 120,000

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Assets Held for Sale - Assets Held for Sale, Including Discontinued Operations (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Assets Held for Sale
Total assets held for sale	$ 22,765	$ 0
Liabilities Related to Assets Held for Sale
Property and equipment, accumulated depreciation	494,941	493,219
Intangible Assets, accumulated amortization	37,833	$ 55,835
Disposal Group, Held-for-Sale, Not Discontinued Operations
Liabilities Related to Assets Held for Sale
Receivables, allowance for doubtful accounts	131
Property and equipment, accumulated depreciation	2,144
Intangible Assets, accumulated amortization	21,717
Disposal Group, Held-for-Sale, Not Discontinued Operations | Aquiline Capital Partners LP
Assets Held for Sale
Receivables, net of allowance for doubtful accounts of $131	8,427
Property and equipment, net of accumulated depreciation of $2,144	210
Operating lease right-of-use assets	2,848
Capitalized software, net	492
Goodwill	1,711
Intangible Assets, net of accumulated amortization of $21,717	8,413
Deferred contract costs	395
Other assets, net	269
Total assets held for sale	22,765
Liabilities Related to Assets Held for Sale
Accrued liabilities	1,188
Operating lease liabilities	2,993
Deferred revenue	202
Total liabilities related to assets held for sale	$ 4,383