UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

________________________________________

FORM 8-K

________________________________________

CURRENT REPORT

PURSUANT TO SECTION 13 OR 15(D)

OF THE SECURITIES EXCHANGE ACT OF 1934

July 23, 2025

Date of report (Date of earliest event reported)

________________________________________

SEI INVESTMENTS COMPANY

(Exact name of registrant as specified in charter)

________________________________________

Pennsylvania	0-10200	23-1707341
(State or Other Jurisdiction<br><br>of Incorporation)	(Commission<br>File Number)	(I.R.S. Employer<br>Identification No.)

1 Freedom Valley Drive

Oaks, Pennsylvania 19456

(Address of Principal Executive Offices and Zip Code)

(610) 676-1000

(Registrants’ Telephone Number, Including Area Code)

________________________________________

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

| ☐ | Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) | | --- | --- || ☐ | Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) | | --- | --- || ☐ | Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) | | --- | --- || ☐ | Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)) | | --- | --- |

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 is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

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. ☐

Item 2.02. Results of Operations and Financial Condition.

On Wednesday, July 23, 2025, SEI Investments Company (the "Company") issued a press release announcing its financial and operating results for the second quarter ended June 30, 2025. A copy of the press release is furnished as Exhibit 99.1 and incorporated in this Item 2.02 by reference. A recording of the earnings call referenced in the press release furnished as Exhibit 99.1 is available for replay on the Company’s website at ir.seic.com/events-presentations/events.

As provided in General Instruction B.2 to Form 8-K, the information furnished in this Item 2.02 and Exhibit 99.1 hereto shall not be deemed “filed” for purposes of Section 18 of the Securities and Exchange Act of 1934, as amended, nor shall it be deemed incorporated by reference in any filing with the Securities and Exchange Commission, except as shall be expressly provided by specific reference in such filing.

Item 7.01. Regulation FD Information.

A copy of an earnings presentation that is intended to be used by representatives of the Company is furnished as Exhibit 99.2 to this Current Report on Form 8-K and is incorporated herein by reference.

The information furnished pursuant to Item 7.01 and Exhibit 99.2 hereof shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, nor shall it be deemed incorporated by reference in any filing with the Securities and Exchange Commission, except as shall be expressly provided by specific reference in such filing.

Item 9.01. Financial Statements and Exhibits.

Exhibit No.	Description
99.1	Press Release dated July 23, 2025 of SEI Investments Company related to the Company's financial and operating results for the secondseic-earningsreleaseex9910.htmquarter ended June 30, 2025
99.2	Earnings Presentation of SEI Investments Company for the second quarter ended June 30, 2025
104	Cover Page Interactive Data File (embedded within the Inline XBRL document)

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 hereunto duly authorized.

		SEI INVESTMENTS COMPANY
Date:	July 23, 2025	By:	/s/ Sean J. Denham
			Sean J. Denham<br>Chief Financial and Chief Operating Officer

Document

Investor contact: Media contact:

Brad Burke Leslie Wojcik

SEI SEI

+1 610-676-5350 +1 610-676-4191

bburke2@seic.com lwojcik@seic.com

Pages: 10

FOR IMMEDIATE RELEASE

SEI Reports Second-Quarter 2025 Financial Results

OAKS, Pa., July 23, 2025 – SEI Investments Company (NASDAQ:SEIC) today announced financial results for the second quarter 2025. Relative to the second quarter 2024, EPS increased by 70%, and revenue and operating income grew by 8% and 9%, respectively, with operating margin increasing to 27%. Q2 2025 EPS benefited by $0.58 from several items affecting comparability against prior quarters, most notably the $94.4 million gain on the sale of SEI's Family Office Services business.

Consolidated Overview
(In thousands, except earnings per share)	For the Three Months Ended June 30,			For the Six Months Ended June 30,
	2025	2024	%	2025	2024	%
Revenues	559,601	518,986	8%	1,110,945	1,030,565	8%
Operating income	148,635	136,514	9%	305,732	262,365	17%
Operating margin	27	26	4%	28	25	12%
Net income	227,083	139,120	63%	378,600	270,520	40%
Diluted earnings per share	1.78	1.05	70%	2.95	2.04	45%

All values are in US Dollars.

“SEI achieved another strong quarter across our core businesses. We are executing with conviction and discipline, positioning the company for sustained growth. As we prepare SEI to support that growth and our clients’ evolving needs, we are making intentional investments in our talent, technology, and infrastructure to enhance our capabilities and scale,” said CEO Ryan Hicke.

“Our strategic investment in Stratos demonstrates our commitment to challenging ourselves to change and innovate in the pursuit of our goal to be the leading provider of wealth management solutions and services. We will continue to invest capital in areas where we have conviction that the long-term opportunity will maximize the return for our clients, employees, and shareholders.

“We’re excited to welcome two highly experienced, independent directors to our Board. Karin Risi and Tom Naratil bring tremendous expertise and insight that will be invaluable as we continue to execute our growth strategies.”

Summary of Second-Quarter Results by Business Segment

(In thousands)	For the Three Months Ended June 30,			For the Six Months Ended June 30,
	2025	2024	%	2025	2024	%
Investment Managers:
Revenues	195,067	179,868	8%	387,115	352,521	10%
Expenses	121,636	111,287	9%	238,847	220,837	8%
Operating Profit	73,431	68,581	7%	148,268	131,684	13%
Operating Margin	38	38		38	37
Private Banks:
Revenues	141,449	132,401	7%	279,163	262,538	6%
Expenses	118,724	111,890	6%	233,473	224,864	4%
Operating Profit	22,725	20,511	11%	45,690	37,674	21%
Operating Margin	16	15		16	14
Investment Advisors:
Revenues	137,193	120,587	14%	273,769	243,305	13%
Expenses	75,801	68,953	10%	148,256	135,911	9%
Operating Profit	61,392	51,634	19%	125,513	107,394	17%
Operating Margin	45	43		46	44
Institutional Investors:
Revenues	69,343	71,507	(3)%	137,849	143,285	(4)%
Expenses	35,857	38,426	(7)%	71,727	78,535	(9)%
Operating Profit	33,486	33,081	1%	66,122	64,750	2%
Operating Margin	48	46		48	45
Investments in New Businesses:
Revenues	16,549	14,623	13%	33,049	28,916	14%
Expenses	18,430	18,580	(1)%	36,926	36,963	—%
Operating Loss	(1,881)	(3,957)	(52)%	(3,877)	(8,047)	(52)%
Totals:
Revenues	559,601	518,986	8%	1,110,945	1,030,565	8%
Expenses	370,448	349,136	6%	729,229	697,110	5%
Corporate Overhead Expenses	40,518	33,336	22%	75,984	71,090	7%
Income from Operations	148,635	136,514	9%	305,732	262,365	17%

All values are in US Dollars.

Second-Quarter Business Highlights:

•SEI achieved diluted EPS of $1.78, up 70% from the prior year, reflecting continued momentum in SEI's business in addition to the $0.58 impact of several items affecting comparability in the quarter, specifically:

◦A $0.60 benefit associated with the gain on sale of the Family Office Services business, and a settlement gain from the resolution of a long-standing vendor negotiation.

◦A $0.02 combined loss from FX transaction losses and M&A legal fees from our recently announced acquisition of Stratos Wealth Holdings, reflected in Corporate Overhead.

•Net sales events during the second quarter 2025 were $29.2 million, bringing net sales events for the trailing 12 months to $160.4 million, a new record. Sales events were driven by the Investment Managers business, which achieved a balanced mix of wins across alternatives, traditional and international investment managers.

◦Sales pipelines across all of SEI's businesses remain healthy, including Private Banking and the Asset Management businesses, where net sales events have improved considerably against 2024 losses.

•Consolidated revenues and operating income increased by 8% and 9%, respectively, from Q2 2024. SEI's consolidated operating margin of 27% represents a modest improvement over the prior year and a decline vs. Q1 2025, reflecting increased investments in both talent and technology to support expected growth.

◦Private Banks operating profit growth of 11% reflects continued momentum and the positive impact of several clients going live in the quarter.

◦Investment Managers operating profit growth of 7% was driven by a double-digit increase in alternative manager revenue, partially offset by a slight decline in traditional revenue due to volatile Q2 market valuations.

▪Investment Managers operating profit margin declined vs. Q1 2025 due to hiring ahead of expected new business and a challenging comparison due to first quarter delays in hiring.

◦Investment Advisors operating profit growth of 19% reflects the $21M contribution from SEI's integrated cash program, up $11M from Q2 2024.

◦Investment Advisors and Institutional Investors realized flat revenue growth relative to Q1 2025 as market appreciation in May and June offset significant declines realized in April.

•Average assets under administration increased by 4%, and average assets under management increased 2% relative to Q1 2025. Ending assets under management increased by 6% from Q1 to Q2, reflecting significant market appreciation realized during the months of May and June.

◦Institutional Investors and Investment Advisors net flows have improved year-to-date, posting just over $1 billion of net outflows against more than $7 billion of net outflows in the first half of 2024.

•SEI repurchased 2.2 million shares of common stock for $180.8 million during the second quarter 2025 at an average price of $83.60 per share, bringing total shares repurchased to 9.0 million for the trailing 12 months.

Earnings Conference Call

A conference call and presentation to review earnings is scheduled for 5 p.m. Eastern time on July 23, 2025. Analysts and investors are invited to join the call by completing the registration form. The public is invited to review the presentation and listen to the call and replay at ir.seic.com/events-presentations/events.

Link for registration form: https://register-conf.media-server.com/register/BIfd556ca2d12b41ee852cbc0a021d1a2b

About SEI®

SEI (NASDAQ:SEIC) is a leading global provider of financial technology, operations, and asset management services within the financial services industry. SEI tailors its solutions and services to help clients more effectively deploy their capital—whether that’s money, time, or talent—so they can better serve their clients and achieve their growth objectives. As of June 30, 2025, SEI manages, advises, or administers approximately $1.7 trillion in assets. For more information, visit seic.com.

This release contains forward-looking statements within the meaning or the rules and regulations of the Securities and Exchange Commission. In some cases you can identify forward-looking statements by terminology, such as "may," "will," "expect," "believe" and "continue" or "appear." Our forward-looking statements include our current expectations as to:

•whether we are positioned for sustained growth;

•the nature of our internal investments and the factors that drive these investments;

•our goals;

•the strength of our pipelines;

•our focus on profitability and cost leverage;

•our cost discipline and its effects on profitability;

•our investment priorities; and

•when and if we will generate net annualized recurring revenues from sales events that occurred during the quarter, as well as the amount of any such revenue.

You should not place undue reliance on our forward-looking statements, as they are based on the current beliefs and expectations of our management and subject to significant risks and uncertainties, many of which are beyond our control or are subject to change. Although we believe the assumptions upon which we base our forward-looking statements are reasonable, they could be inaccurate. Some of the risks and important factors that could cause actual results to differ from those described in our forward-looking statements can be found in the “Risk Factors” section of our Annual Report on Form 10-K for the year ended Dec. 31, 2024, filed with the Securities and Exchange Commission.

#

SEI INVESTMENTS COMPANY

CONSOLIDATED STATEMENTS OF OPERATIONS

(In thousands, except per share data) (Unaudited)

	For the Three Months Ended June 30,		For the Six Months Ended June 30,
	2025	2024	2025	2024
Asset management, admin. and distribution fees	$437,543	$409,398	$869,686	$813,764
Information processing and software servicing fees	122,058	109,588	241,259	216,801
Total revenues	559,601	518,986	1,110,945	1,030,565
Subadvisory, distribution and other asset mgmt. costs	49,709	46,542	97,241	93,310
Software royalties and other information processing costs	9,191	8,096	18,272	16,567
Compensation, benefits and other personnel	199,574	185,878	390,358	378,794
Stock-based compensation	13,891	12,469	28,029	23,528
Consulting, outsourcing and professional fees	56,942	53,991	112,943	105,967
Data processing and computer related	41,801	38,074	81,120	75,234
Facilities, supplies and other costs	21,744	18,570	40,499	37,173
Amortization	10,449	10,485	21,159	20,871
Depreciation	7,665	8,367	15,592	16,756
Total expenses	410,966	382,472	805,213	768,200
Income from operations	148,635	136,514	305,732	262,365
Net gain from investments	1,759	666	2,252	2,922
Interest and dividend income	9,283	11,552	19,504	22,371
Interest expense	(92)	(139)	(277)	(278)
Gain on sale of business	94,412	—	94,412	—
Other income	4,500	—	4,500	—
Equity in earnings of unconsolidated affiliate	33,640	34,219	62,387	65,862
Income before income taxes	292,137	182,812	488,510	353,242
Income taxes	65,054	43,692	109,910	82,722
Net income	$227,083	$139,120	$378,600	$270,520
Basic earnings per common share	$1.82	$1.06	$3.02	$2.06
Shares used to calculate basic earnings per share	124,470	130,815	125,516	131,116
Diluted earnings per common share	$1.78	$1.05	$2.95	$2.04
Shares used to calculate diluted earnings per share	127,278	132,073	128,364	132,409
Dividends declared per common share	$0.49	$0.46	$0.49	$0.46

SEI INVESTMENTS COMPANY

CONSOLIDATED BALANCE SHEETS

(In thousands) (Unaudited)

	June 30,	December 31,
	2025	2024
Assets
Current Assets:
Cash and cash equivalents	$746,349	$840,193
Receivables from investment products	49,095	54,118
Receivables, net of allowance for doubtful accounts of $2,124 and $1,435	637,568	567,634
Securities owned	31,682	29,583
Other current assets	66,310	60,282
Total Current Assets	1,531,004	1,551,810
Property and Equipment, net of accumulated depreciation of $503,326 and $493,219	155,690	159,643
Operating Lease Right-of-Use Assets	26,693	28,905
Capitalized Software, net of accumulated amortization of $653,008 and $641,071	235,601	236,023
Investments	290,466	315,567
Goodwill	168,738	170,287
Intangible Assets, net of accumulated amortization of $41,550 and $55,835	65,189	77,370
Deferred Contract Costs	47,218	45,855
Deferred Income Taxes	51,379	51,984
Other Assets, net	54,288	47,162
Total Assets	$2,626,266	$2,684,606
Liabilities and Equity
Current Liabilities:
Accounts payable	$13,084	$13,081
Accrued liabilities	214,507	347,513
Current portion of long-term operating lease liabilities	7,400	7,900
Deferred revenue	12,583	12,019
Total Current Liabilities	247,574	380,513
Long-term Income Taxes Payable	—	803
Long-term Operating Lease Liabilities	21,646	24,235
Other Long-term Liabilities	18,607	26,943
Total Liabilities	287,827	432,494
Shareholders' Equity:
Common stock, $0.01 par value, 750,000 shares authorized; 123,697 and 126,840 shares issued and outstanding	1,236	1,268
Capital in excess of par value	1,619,133	1,539,816
Retained earnings	739,453	758,003
Accumulated other comprehensive loss, net	(21,383)	(46,975)
Total Shareholders' Equity	2,338,439	2,252,112
Total Liabilities and Shareholders' Equity	$2,626,266	$2,684,606

SEI INVESTMENTS COMPANY

CONSOLIDATED CONDENSED STATEMENTS OF CASH FLOWS

(In thousands) (Unaudited)

	For the Six Months Ended June 30,
	2025	2024
Cash flows from operating activities:
Net income	$378,600	$270,520
Adjustments to reconcile net income to net cash provided by operating activities	(135,595)	(43,490)
Net cash provided by operating activities	$243,005	$227,030
Net cash provided by/(used in) investing activities	$65,268	($61,082)
Net cash used in financing activities	($419,220)	($229,687)
Effect of exchange rate changes on cash, cash equivalents and restricted cash	17,103	(2,667)
Net decrease in cash, cash equivalents and restricted cash	(93,844)	(66,406)
Cash, cash equivalents and restricted cash, beginning of period	840,193	834,998
Cash, cash equivalents and restricted cash, end of period	$746,349	$768,592

ENDING ASSET BALANCES

(In millions) (Unaudited)

	Jun. 30	Sep. 30	Dec. 31	Mar. 31	Jun. 30
	2024	2024	2024	2025	2025
Investment Managers:
Collective trust fund programs (A)	$192,747	$204,429	$202,384	$209,491	$225,690
Liquidity funds	221	233	188	244	307
Total assets under management	$192,968	$204,662	$202,572	$209,735	$225,997
Client assets under administration	998,315	1,022,515	1,032,812	1,061,067	1,128,325
Total assets	$1,191,283	$1,227,177	$1,235,384	$1,270,802	$1,354,322
Private Banks:
Equity and fixed-income programs	$25,031	$26,565	$25,523	$25,590	$27,839
Collective trust fund programs	5	5	4	4	3
Liquidity funds	2,699	2,948	2,688	3,670	2,796
Total assets under management	$27,735	$29,518	$28,215	$29,264	$30,638
Client assets under administration	7,813	8,349	8,340	8,365	8,431
Total assets	$35,548	$37,867	$36,555	$37,629	$39,069
Investment Advisors:
Equity and fixed-income programs	$74,556	$78,361	$76,283	$75,689	$80,618
Liquidity funds	4,301	2,790	3,105	3,153	3,457
Total Platform assets under management	$78,857	$81,151	$79,388	$78,842	$84,075
Platform-only assets	21,908	24,501	25,244	25,591	29,848
Platform-only assets-deposit program	894	2,447	2,398	2,216	2,155
Total Platform assets	$101,659	$108,099	$107,030	$106,649	$116,078
Institutional Investors:
Equity and fixed-income programs	$75,542	$79,252	$75,481	$76,491	$80,112
Collective trust fund programs	1	1	1	1	—
Liquidity funds	2,309	1,829	1,511	1,580	1,768
Total assets under management	$77,852	$81,082	$76,993	$78,072	$81,880
Client assets under advisement	7,886	8,038	5,955	5,573	6,090
Total assets	$85,738	$89,120	$82,948	$83,645	$87,970
Investments in New Businesses:
Equity and fixed-income programs	$2,285	$2,825	$2,747	$2,661	$2,867
Liquidity funds	631	246	297	288	244
Total assets under management	$2,916	$3,071	$3,044	$2,949	$3,111
Client assets under administration (E)	14,848	15,110	14,791	14,846	—
Client assets under advisement	1,886	2,021	2,185	2,219	2,593
Total assets	$19,650	$20,202	$20,020	$20,014	$5,704
LSV Asset Management:
Equity and fixed-income programs (B)	$90,197	$93,855	$86,501	$87,114	$91,795
Total:
Equity and fixed-income programs (C)	$267,611	$280,858	$266,535	$267,545	$283,231
Collective trust fund programs	192,753	204,435	202,389	209,496	225,693
Liquidity funds	10,161	8,046	7,789	8,935	8,572
Total assets under management	$470,525	$493,339	$476,713	$485,976	$517,496
Client assets under advisement	9,772	10,059	8,140	7,792	8,683
Client assets under administration (D)	1,020,976	1,045,974	1,055,943	1,084,278	1,136,756
Platform-only assets	22,802	26,948	27,642	27,807	32,003
Total assets	$1,524,075	$1,576,320	$1,568,438	$1,605,853	$1,694,938

(A)Collective trust fund program assets in the Investment Managers segment 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 June 30, 2025).

(C)Equity and fixed-income programs include $6.7 billion of assets invested in various asset allocation funds (as of June 30, 2025).

(D) In addition to the assets presented, SEI also administers an additional $11.4 billion in Funds of Funds assets on which SEI does not earn an administration fee (as of June 30, 2025).

(E) Client assets under administration related to the Family Office Services business divested on June 30, 2025.

AVERAGE ASSET BALANCES

(In millions) (Unaudited)

	2nd Qtr.	3rd Qtr.	4th Qtr.	1st Qtr.	2nd Qtr.
	2024	2024	2024	2025	2025
Investment Managers:
Collective trust fund programs (A)	$189,884	$198,839	$204,954	$208,720	$215,085
Liquidity funds	227	245	223	256	288
Total assets under management	$190,111	$199,084	$205,177	$208,976	$215,373
Client assets under administration	982,806	1,005,111	1,034,500	1,061,282	1,098,925
Total assets	$1,172,917	$1,204,195	$1,239,677	$1,270,258	$1,314,298
Private Banks:
Equity and fixed-income programs	$24,859	$25,823	$26,067	$25,894	$26,533
Collective trust fund programs	5	5	4	4	3
Liquidity funds	2,734	2,858	2,814	2,961	2,771
Total assets under management	$27,598	$28,686	$28,885	$28,859	$29,307
Client assets under administration	7,884	8,074	8,395	8,488	8,266
Total assets	$35,482	$36,760	$37,280	$37,347	$37,573
Investment Advisors:
Equity and fixed-income programs	$73,793	$76,111	$77,866	$77,287	$76,629
Liquidity funds	4,348	4,264	3,031	3,119	3,464
Total Platform assets under management	$78,141	$80,375	$80,897	$80,406	$80,093
Platform-only assets	20,897	23,194	25,109	25,939	27,288
Platform-only assets-deposit program	886	1,176	2,186	2,187	2,152
Total Platform assets	$99,924	$104,745	$108,192	$108,532	$109,533
Institutional Investors:
Equity and fixed-income programs	$75,203	$77,473	$77,399	$76,492	$77,843
Collective trust fund programs	1	1	1	1	—
Liquidity funds	1,893	2,046	2,154	1,655	1,853
Total assets under management	$77,097	$79,520	$79,554	$78,148	$79,696
Client assets under advisement	7,508	7,925	6,991	5,741	5,841
Total assets	$84,605	$87,445	$86,545	$83,889	$85,537
Investments in New Businesses:
Equity and fixed-income programs	$2,234	$2,432	$2,819	$2,801	$2,732
Liquidity funds	471	546	269	274	244
Total assets under management	$2,705	$2,978	$3,088	$3,075	$2,976
Client assets under administration (E)	14,713	14,973	14,961	14,630	14,917
Client assets under advisement	2,014	1,885	2,110	2,205	2,329
Total assets	$19,432	$19,836	$20,159	$19,910	$20,222
LSV Asset Management:
Equity and fixed-income programs (B)	$90,849	$93,195	$88,880	$87,790	$89,422
Total:
Equity and fixed-income programs (C)	$266,938	$275,034	$273,031	$270,264	$273,159
Collective trust fund programs	189,890	198,845	204,959	208,725	215,088
Liquidity funds	9,673	9,959	8,491	8,265	8,620
Total assets under management	$466,501	$483,838	$486,481	$487,254	$496,867
Client assets under advisement	9,522	9,810	9,101	7,946	8,170
Client assets under administration (D)	1,005,403	1,028,158	1,057,856	1,084,400	1,122,108
Platform-only assets	21,783	24,370	27,295	28,126	29,440
Total assets	$1,503,209	$1,546,176	$1,580,733	$1,607,726	$1,656,585

(A) Collective trust fund program average assets in the Investment Managers segment 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 during second-quarter 2025 include $1.4 billion of average assets managed by LSV in which fees are based solely on performance and are not calculated as an asset-based fee.

(C) Equity and fixed-income programs include $6.5 billion of average assets invested in various asset allocation funds during second-quarter 2025.

(D) In addition to the assets presented, SEI also administers an additional $11.2 billion of average assets in Funds of Funds assets during second-quarter 2025 on which SEI does not earn an administration fee.

(E) Client assets under administration include $14.9 billion of average assets during second-quarter 2025 related to the Family Office Services business which was divested on June 30, 2025.

SALES EVENTS

(In thousands) (Unaudited)

Net Recurring Sales Events
	2nd Qtr.		3rd Qtr.		4th Qtr.		1st Qtr.		2nd Qtr.
	2024		2024		2024		2025		2025
Investment Processing-related Businesses:
Investment Managers	$	17,180	$	23,319	$	18,027	$	25,296	$	21,928
Private Banks	4,331		9,417		9,245		7,059		254
Total Investment Processing-related Businesses	$	21,511	$	32,736	$	27,272	$	32,355	$	22,182
Asset Management-related Businesses:
Private Banks-AMD	$	(494)	$	(854)	$	495	$	(58)	$	(174)
Investment Advisors	(3,299)		2,686		1,339		888		(1,654)
Institutional Investors	(1,787)		(576)		(2,673)		41		2,544
Total Asset Management-related Businesses	$	(5,580)	$	1,256	$	(839)	$	871	$	716
Newer Initiatives:
Investments in New Businesses	$	(43)	$	936	$	1,778	$	3,614	$	1,245
Total Net Recurring Sales Events	$	15,888	$	34,928	$	28,211	$	36,840	$	24,143
Non-Recurring Sales Events
	2nd Qtr.		3rd Qtr.		4th Qtr.		1st Qtr.		2nd Qtr.
	2024		2024		2024		2025		2025
Investment Processing-related Businesses:
Investment Managers	$	930	$	712	$	2,465	$	835	$	1,102
Private Banks	4,431		8,796		6,622		7,060		2,373
Total Investment Processing-related Businesses	$	5,361	$	9,508	$	9,087	$	7,895	$	3,475
Newer Initiatives:
Investments in New Businesses	$	717	$	1,976	$	921	$	1,834	$	1,552
Total Non-Recurring Sales Events	$	6,078	$	11,484	$	10,008	$	9,729	$	5,027
Total Sales Events
	2nd Qtr.		3rd Qtr.		4th Qtr.		1st Qtr.		2nd Qtr.
	2024		2024		2024		2025		2025
Investment Processing-related Businesses:
Investment Managers	$	18,110	$	24,031	$	20,492	$	26,131	$	23,030
Private Banks	8,762		18,213		15,867		14,119		2,627
Total Investment Processing-related Businesses	$	26,872	$	42,244	$	36,359	$	40,250	$	25,657
Asset Management-related Businesses:
Private Banks-AMD	$	(494)	$	(854)	$	495	$	(58)	$	(174)
Investment Advisors	(3,299)		2,686		1,339		888		(1,654)
Institutional Investors	(1,787)		(576)		(2,673)		41		2,544
Total Asset Management-related Businesses	$	(5,580)	$	1,256	$	(839)	$	871	$	716
Newer Initiatives:
Investments in New Businesses	$	674	$	2,912	$	2,699	$	5,448	$	2,797
Total Sales Events	$	21,966	$	46,412	$	38,219	$	46,569	$	29,170

q22025seicearningspresen

SEI Investments Company (NASDAQ: SEIC) Q2 2025 Earnings Presentation

This presentation contains forward-looking statements within the meaning or the rules and regulations of the Securities and Exchange Commission. In some cases you can identify forward- looking statements by terminology, such as "may," "will," "expect," "believe," ”remain” and "continue" or "appear." Our forward-looking statements include our current expectations as to: • the benefits that we and our stakeholders will receive as a consequence of our partnership with Stratos Wealth Management; • our commitment to long-term growth, innovation and accountability; • our focus on execution and the benefits of this focus: • our ability to maintain our sales momentum; • when we will receive the benefits, if at all, of the investments we make; • our cost controls; • the impact of our resource allocations; • our potential, both short and long-term; • the duration of market weaknesses and the effect on us; • the degree to which our hiring will lead to improved execution and support our growth; • the stability of our margins; • the pace of our sales events and market conditions in the second half of 2025; • the timing of the closing of our partnership with Stratos Wealth Management; • the source of our funding of our purchase of the equity of Stratos Wealth Management; • the evolution of our go to market strategy; • our ability to serve the world’s most sophisticated institutional, wealth, and asset management organizations; • our strategic priorities and our ability to execute against these priorities; • the strength of our position to address the current and future uncertainties; • the impacts of market uncertainty; • our investment priorities; • our ability to deliver sustained, long-term growth and shareholder value; • the demand for our products and services; • the headwinds that may affect our businesses; • the opportunities available to us for growth and to gain share in the markets or regions in which we currently, and seek to, participate; • the performance of our various businesses, including the margins and profitability of such businesses and the events that may affect the margins, profitability and growth prospects of these businesses; • the drivers of future revenue, margin and earnings growth; • the benefits, if any, that we or our clients may derive from acquired assets; • the strength and elements of our balance sheet; • the strength of our pipelines and the momentum that each may have; • our run rate and the stability of the elements of that run rate; • the resiliency of our business; and • the market dynamics affecting our businesses. You should not place undue reliance on our forward-looking statements, as they are based on the current beliefs and expectations of our management and subject to significant risks and uncertainties, many of which are beyond our control or are subject to change. Although we believe the assumptions upon which we base our forward-looking statements are reasonable, they could be inaccurate. Some of the risks and important factors that could cause actual results to differ from those described in our forward-looking statements can be found in the "Risk Factors" section of our Annual Report on Form 10-K for the year ended Dec. 31, 2024, filed with the Securities and Exchange Commission. Past performance does not guarantee future results. Safe Harbor Statement 2 SEI Earnings PresentationQ2 2025

Q2 2025 vs. Q2 '24 vs. Q1 '25 Revenues 559.6 7.8% 1.5% Operating Income 148.6 8.9% -5.4% Net Income 227.1 63.2% 49.9% EPS $1.78 69.5% 52.1% Net Sales Events 29.2 32.8% -37.4% Operating Margin 26.6% 0.3% -1.9% Assets Under Management ($B) 517.5 10.0% 6.5% Administration, Platform & Advisement ($B) 1,177.4 11.8% 5.1% % Change Q2 2025 highlights. SEI Earnings PresentationQ2 2025 EPS of $1.78 includes several non-recurring items – Excluding impact of these items, EPS increased on both a sequential and year-over-year basis Net sales events totaled $29M, led by Investment Managers and reflecting temporary delays in Private Banking. Pipelines across SEI’s business remain strong Margins improved year-over-year but declined sequentially due to investments to support strong sales momentum and expected growth $ in millions except EPS; AUM; and Assets under administration, platform-only, and advisement; and platform-only assets Operating margin % change represents improvement or decline in margin rate vs. prior period Q2 2025 reflects continued momentumQ2 2025 financial snapshot 3

Earnings per share. SEI Earnings PresentationQ2 2025 Reported Q2 EPS of $1.78, including unusual items: • $0.60 gain on the sale of FOS and a vendor settlement gain, both reflected in other income • $0.02 of non-recurring expenses captured in corporate overhead (FX losses and M&A fees) Excluding unusual items: • EPS increased on both a year- over-year and sequential basis • All SEI businesses reported increased operating profit on a year-over-year basis • Elevated share repurchases support EPS growth both sequentially and year-over-year Strong EPS growth ex-unusual items Q2 2024 Private Banks Investment Advisors Institutional Investors Investment Managers LSV Income Corporate Overhead Tax Rate & Other Share Count Q2 2025 +69% Q1 2025 Private Banks Investment Advisors Institutional Investors Investment Managers LSV Income Corporate Overhead Tax Rate & Other Share Count Q2 2025 +52% Y e a r- O v e r- Y e a r Q u a rt e r- O v e r- Q u a rt e r 4 $1.05 $0.01 $0.06 $0.00 $0.03 $0.00 -$0.04 $0.61 $0.06 $1.78 $1.17 $0.00 -$0.02 $0.01 -$0.01 $0.03 -$0.03 $0.61 $0.03 $1.78

Business unit performance. SEI Earnings PresentationQ2 2025 Revenue ($M) Private Banking revenue increase driven by several client go-lives during Q2 Investment Managers revenue growth reflects double-digit alts increase offset by modest decline in traditional due to mark-to-market pressure • Mark-to-market pressure expected to subside based upon May/June market appreciation Advisor year-over-year growth driven by $21M in Integrated Cash Program revenue, up $11M from Q2 2024 Advisor and Institutional revenue flat sequentially against choppy Q2 market conditions Business unit highlightsOperating profit ($M) $132 $180 $121 $72 $138 $192 $137 $69 $141 $195 $137 $69 Private Banking Investment Managers Investment Advisors Institutional Investors Q2 2024 Q1 2025 Q2 2025 $21 $69 $52 $33 $23 $75 $64 $33 $23 $73 $61 $33 Private Banking Investment Managers Investment Advisors Institutional Investors Q2 2024 Q1 2025 Q2 2025 +7% +8% +14% -3% +11% +7% +19% +1% 5

Operating margins. SEI Earnings PresentationQ2 2025 -4.0% -2.0% 0.0% 2.0% 4.0% Private Banking Investment Managers Investment Advisors Institutional Investors Quarter-Over-Quarter Year-Over-Year Business unit margin changes HighlightsConsolidated operating margin 10.0% 20.0% 30.0% Q4 2023 Q1 2024 Q2 2024 Q3 2024 Q4 2024 Q1 2025 Q2 2025 Positive operating leverage across all businesses except Investment Managers vs. prior year Margin performance vs. Q1 2025: Investment Managers: Decline driven by hiring ahead of new business and delays in Q1 hiring Private Banking: Modest decline driven by ramp-up of investments to support strong pipeline Investment Advisors: Decline driven by handful of choppier items: Earn-out accrual, onboarding costs, elevated Q1 2025 comparison Institutional Investors: Q2 supported by $1M non-recurring earn-out reversal 6

Net sales events. SEI Earnings PresentationQ2 2025 $8.5 $16.5 $15.9 $34.9 $28.2 $36.8 $24.1 $5.3 $4.8 $6.1 $11.5 $10.0 $9.7 $5.0 Q4 '23 Q1 '24 Q2 '24 Q3 '24 Q4 '24 Q1 '25 Q2 '25 Recurring Non-Recurring Total net sales events ($M) Investment Managers led sales in Q2, driven by balanced wins across alternatives, traditional and international. Strong pipeline driven by large alternative managers new to outsourcing Private Banking net events reflect slippage from Q2 due to April market volatility. Pipeline remains strong across regional/community banks, larger banks and professional services Institutional and Advisors net events reflect significant improvement vs. historical run-rate; +$2M YTD vs. ($11M) for H1 2024 Net sales events reached record $160M in TTM Q2 7

Client asset summary. SEI Earnings PresentationQ2 2025 AUA and assets on platform ($B)* AUM ($B) $1,054 $1,120 $1,177 Q2 2024 Q1 2025 Q2 2025 +12% +5% $471 $486 $517 Q2 2024 Q1 2025 Q2 2025 +10% +6% Highlights • Both AUM and AUA increased relative to the prior year and prior quarter • AUM growth reflects both positive market conditions and improving asset flows. Traditional mutual fund outflows largely offset with growth in models and custom portfolios • Growth in AUA reflects continued demand for Investment Managers services, in addition to market appreciation • LSV investment outflows were more than offset by market appreciation, and fund performance remains solid with LSV realized $5M of performance fees in Q2 at SEI’s share *Assets under administration, advisement and platform-only 8

Capital allocation, liquidity, and capitalization. SEI Earnings PresentationQ2 2025 $181 $719 $61 $123 Q2 '25 TTM Q2 '25 Buybacks Dividends Capital returned to shareholders ($M) Liquidity and capitalization ($M) $746 $0 $11,500 Cash Long-Term Debt Market Capitalization Continued to return significant capital to shareholders during Q2: TTM buybacks now exceed $700M Stratos acquisition announced last week not reflected in Q2, expected to close later in 2025 Expect to fund majority of Stratos with low-cost balance sheet cash while continuing to return FCF to shareholders via dividends and buybacks Highlights 9

For institutional investor and financial advisor use only. Not for distribution to general public. Thank you. 10