Exhibit 99.1

Investor Contact:                         Media Contact:

Nicole Vattimo                            Dana Grosser

SEI    SEI

+1 610-676-4385                        +1 610-676-2459

nvattimo@seic.com                         dgrosser@seic.com

Pages:        8

FOR IMMEDIATE RELEASE

SEI REPORTS SECOND-QUARTER 2014 FINANCIAL RESULTS

Revenues Increase 16 Percent, Strong Growth in Income From Operations

OAKS, Pa., July 23, 2014 -- SEI Investments Company (NASDAQ:SEIC) today announced financial results for the second-quarter 2014. Diluted earnings per share were $.48 in second-quarter 2014 compared to $.47 in second-quarter 2013. Diluted earnings per share in the second-quarter 2013 reflect pre-tax gains of $.16 per share from a litigation settlement payment related to a structured investment vehicle (SIV) security. Net of this item, diluted earnings per share were $.31 in second-quarter 2013 and diluted earnings per share growth was 55 percent.

Consolidated Overview		For the Three Months Ended June 30,											For the Six Months Ended June 30,
(In thousands, except earnings per share)
		2014				2013				%			2014				2013				%
Revenues			$318,815				$274,574			16	%		$	621,201			$	546,453			14	%
Net income attributable to SEI		82,813				83,494				(1	)%		157,633				155,414				1	%
Diluted earnings per share			$0.48				$0.47			2	%			$0.91				$0.88			3	%

"Our strong second-quarter results reflect progress across all of our business segments," said Alfred P. West, Jr., SEI Chairman and CEO. "The results are evidence that what we are building and delivering into our markets is being accepted and that our commitment to long-term, sustainable growth and increased shareholder value is paying off.

"These results affirm our strategic business model of a diversified portfolio of offerings that provide leveraged and scalable solutions to our markets."

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Summary of Second-Quarter Results by Business Segment

(In thousands)		For the Three Months Ended June 30,											For the Six Months Ended June 30,
		2014				2013				%			2014				2013				%
Private Banks:
Revenues			$114,182				$95,142			20	%			$219,361				$193,888			13	%
Expenses		98,957				97,755				1	%		199,147				194,053				3	%
Operating Profit		15,225				(2,613		)		NM			20,214				(165		)		NM
Gain on sale of subsidiary		—				—				—	%		5,582				22,112				(75	)%
Total Profit		15,225				(2,613		)		NM				$25,796				$21,947			18	%
Operating Margin (A)		13		%		(3		)%					9		%		—		%
Investment Advisors:
Revenues		70,046				59,284				18	%		136,470				114,475				19	%
Expenses		35,679				32,898				8	%		70,256				64,523				9	%
Operating Profit		34,367				26,386				30	%		66,214				49,952				33	%
Operating Margin		49		%		45		%					49		%		44		%
Institutional Investors:
Revenues		70,994				63,684				11	%		139,651				126,846				10	%
Expenses		35,025				33,028				6	%		69,120				64,537				7	%
Operating Profit		35,969				30,656				17	%		70,531				62,309				13	%
Operating Margin		51		%		48		%					51		%		49		%
Investment Managers:
Revenues		62,451				55,456				13	%		123,459				109,276				13	%
Expenses		39,449				36,507				8	%		78,633				71,669				10	%
Operating Profit		23,002				18,949				21	%		44,826				37,607				19	%
Operating Margin		37		%		34		%					36		%		34		%
Investments in New Businesses:
Revenues		1,142				1,008				13	%		2,260				1,968				15	%
Expenses		4,451				3,890				14	%		8,700				7,628				14	%
Operating Loss		(3,309		)		(2,882		)		NM			(6,440		)		(5,660		)		NM
Totals:
Revenues			$318,815				$274,574			16	%			$621,201				$546,453			14	%
Expenses		213,561				204,078				5	%		425,856				402,410				6	%
Corporate overhead expenses		11,624				12,523				(7	)%		23,323				26,317				(11	)%
NCI reflected in segments		—				—				—	%		—				(289		)		NM
Income from operations			$93,630				$57,973			62	%			$172,022				$118,015			46	%

(A) Percentages determined exclusive of gain on sale of subsidiary.

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Second-Quarter Business Highlights:

•	Revenues increased in second-quarter 2014 as compared to both second-quarter 2013 and first-quarter 2014. Revenue growth was primarily driven by higher Asset management, administration, and distribution fees from market appreciation and improved cash flows from new and existing clients.

•	Revenue growth was also driven by increased information processing fees in our Private Banks segment. The increase was primarily attributable to higher fees from the growth in assets processed on the SEI Wealth PlatformSM and $6.0 million, or $.02 diluted earnings per share, in non-recurring professional services fees from a single project.

•	Sales events, net of client losses, during second-quarter 2014 totaled approximately $23.1 million and are expected to generate net annualized recurring revenues of approximately $17.0 million when contract values are fully realized.

•	Our average assets under management, excluding LSV, increased $23.5 billion, or 17 percent, to $164.3 billion in the second-quarter 2014, as compared to $140.9 billion during the second-quarter 2013, and increased $6.8 billion, or four percent, as compared to $157.6 billion during the first-quarter 2014.

•	Our average assets under administration increased $49.2 billion, or 16 percent, to $348.4 billion in the second-quarter 2014, as compared to $299.2 billion during the second-quarter 2013, and increased $12.4 billion, or four percent, as compared to $336.0 billion during the first-quarter 2014 (see attached Ending and Average Asset Balances schedules for further details).

•	All four core business segments realized revenue and profit margin growth as compared to second-quarter 2013 results. Operating margins in all four core business segments improved primarily from increased recurring revenues generated from the higher levels of assets under management and administration.

•	Income from LSV increased $6.7 million, or 24 percent, to $34.5 million in second-quarter 2014 as compared to $27.8 million in second-quarter 2013 due to an increase in assets under management from market appreciation and an increase in performance fees earned by LSV.

•	Stock-based compensation expense during the second-quarter 2014 decreased by $7.7 million due to the acceleration of expense recognition during the comparable period of 2013 for stock options that achieved performance vesting targets earlier than originally estimated.

•	Amortization expense related to capitalized software increased to $9.5 million during the second-quarter 2014 as compared to $8.4 million during the second-quarter 2013 due to continued releases of the SEI Wealth PlatformSM.

•	Net income attributable to SEI in the second-quarter 2013 reflects income of $43.4 million, or approximately $.16 diluted earnings per share, from a settlement payment received pertaining to litigation related to the purchase of securities of Cheyne Finance LLC, a SIV security.

•	The effective tax rates were 35.7 percent in second-quarter 2014, 35.5 percent in second-quarter 2013, and 35.9 percent in first-quarter 2014.

•	In second-quarter 2014, we repurchased 2.2 million shares of our common stock for $71.6 million.

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Earnings Conference Call

A conference call to review earnings is scheduled for 2 p.m. Eastern time on July 23, 2014. Investors may listen to the call at www.seic.com/investors. The call may also be accessed at many financial services websites, including Google Finance and Yahoo Finance. Investors may also listen to replays at these websites, or by telephone at (USA) 800-475-6701; (International) 320-365-3844, access code 332277.

About SEI

SEI (NASDAQ:SEIC) is a leading global provider of investment processing, investment management, and investment operations solutions that help corporations, financial institutions, financial advisors, and ultra-high-net-worth families create and manage wealth. As of June 30, 2014, through its subsidiaries and partnerships in which the company has a significant interest, SEI manages or administers $602 billion in mutual fund and pooled or separately managed assets, including $249 billion in assets under management and $353 billion in client assets under administration. For more information, visit www.seic.com.

Many of the statements in this release may be considered “forward looking statements” and include discussions about future operations, strategies and financial results. Forward-looking statements are based upon estimates and assumptions that involve 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.

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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,
		2014				2013				2014				2013
Asset management, admin. and distribution fees			$236,191				$203,722				$461,262				$402,355
Information processing and software servicing fees		75,828				62,468				145,006				127,000
Transaction–based and trade execution fees		6,796				8,384				14,933				17,098
Total revenues		318,815				274,574				621,201				546,453
Subadvisory, distribution and other asset mgmt costs		37,244				29,652				71,256				57,586
Software royalties and other information processing costs		8,417				7,884				16,970				15,371
Brokerage commissions		5,119				6,260				11,098				12,772
Compensation, benefits and other personnel		92,470				86,715				186,894				175,325
Stock-based compensation		2,872				10,607				5,695				15,900
Consulting, outsourcing and professional fees		33,404				33,451				68,337				65,300
Data processing and computer related		13,378				12,316				25,998				24,374
Facilities, supplies and other costs		17,366				15,559				33,218				33,707
Amortization		9,584				8,427				18,798				16,669
Depreciation		5,331				5,730				10,915				11,434
Total expenses		225,185				216,601				449,179				428,438
Income from operations		93,630				57,973				172,022				118,015
Net gain (loss) on investments		391				(177		)		527				103
Interest and dividend income		721				688				1,498				1,741
Interest expense		(114		)		(114		)		(227		)		(227		)
Equity in earnings of unconsolidated affiliates		34,226				27,588				66,117				55,176
Gain on sale of subsidiary		—				—				5,582				22,112
Other income		—				43,429				—				43,429
Income before income taxes		128,854				129,387				245,519				240,349
Income taxes		46,041				45,893				87,886				84,585
Net income		82,813				83,494				157,633				155,764
Less: Net income attributable to the noncontrolling interest		—				—				—				(350		)
Net income attributable to SEI			$82,813				$83,494				$157,633				$155,414
Basic earnings per common share			$0.49				$0.48				$0.93				$0.90
Shares used to calculate basic earnings per share		168,606				172,223				168,956				172,411
Diluted earnings per common share			$0.48				$0.47				$0.91				$0.88
Shares used to calculate diluted earnings per share		172,304				176,058				173,066				176,032

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SEI INVESTMENTS COMPANY

BALANCE SHEETS

(In thousands)

(Unaudited)

		June 30,				December 31,
		2014				2013
Assets
Current Assets:
Cash and cash equivalents			$532,167				$578,273
Restricted cash		5,500				5,500
Receivables from regulated investment companies		44,044				39,364
Receivables, net		207,682				186,664
Securities owned		21,158				21,133
Other current assets		21,558				16,166
Total Current Assets		832,109				847,100
Property and Equipment, net		126,685				118,995
Capitalized software, net		312,193				312,615
Investments available for sale		85,504				83,323
Trading securities		5,270				4,849
Investment in unconsolidated affiliates		60,017				61,370
Other assets, net		13,328				10,917
Total Assets			$1,435,106				$1,439,169
Liabilities and Equity
Current Liabilities:
Accounts payable			$8,470				$16,235
Accrued liabilities		138,022				188,123
Deferred income taxes, net		1,847				1,653
Deferred revenue		1,338				1,977
Total Current Liabilities		149,677				207,988
Deferred income taxes		72,367				66,572
Other long-term liabilities		9,720				8,607
Total Liabilities		231,764				283,167
Shareholders' Equity:
Common stock		1,677				1,692
Capital in excess of par value		772,386				721,219
Retained earnings		425,458				431,604
Accumulated other comprehensive income, net		3,821				1,487
Total Shareholders' Equity		1,203,342				1,156,002
Total Liabilities and Shareholders' Equity			$1,435,106				$1,439,169

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SEI INVESTMENTS COMPANY

ENDING ASSET BALANCES

(In millions)

(Unaudited)

			Jun. 30,				Sept. 30,				Dec 31,				Mar. 31,				Jun. 30,
			2013				2013				2013				2014				2014
Private Banks:
Equity/Fixed Income programs				$12,876				$14,305				$15,472				$16,918				$18,679
Collective Trust Fund programs			10				11				14				14				12
Liquidity funds			5,048				5,167				5,685				5,670				5,274
Total assets under management				$17,934				$19,483				$21,171				$22,602				$23,965
Client assets under administration			13,122				14,101				15,272				15,641				15,347
Total assets				$31,056				$33,584				$36,443				$38,243				$39,312
Investment Advisors:
Equity/Fixed Income programs				$34,447				$36,203				$38,574				$39,981				$42,125
Collective Trust Fund programs			14				14				11				13				13
Liquidity funds			2,145				2,779				2,846				2,802				2,696
Total assets under management				$36,606				$38,996				$41,431				$42,796				$44,834
Institutional Investors:
Equity/Fixed Income programs				$61,927				$64,429				$66,548				$69,194				$71,598
Collective Trust Fund programs			106				107				109				102				100
Liquidity funds			2,901				3,125				2,644				2,505				2,414
Total assets under management				$64,934				$67,661				$69,301				$71,801				$74,112
Investment Managers:
Equity/Fixed Income programs				$75				$75				$69				$68				$64
Collective Trust Fund programs			18,197				19,868				22,377				22,633				22,598
Liquidity funds			542				678				718				782				802
Total assets under management				$18,814				$20,621				$23,164				$23,483				$23,464
Client assets under administration (A)			289,807				295,959				311,992				326,735				337,492
Total assets				$308,621				$316,580				$335,156				$350,218				$360,956
Investments in New Businesses:
Equity/Fixed Income programs				$572				$594				$619				$632				$659
Liquidity funds			29				26				46				49				38
Total assets under management				$601				$620				$665				$681				$697
LSV Asset Management:
Equity/Fixed Income programs				$65,417				$71,149				$76,189				$77,973				$82,026
Total:
Equity/Fixed Income programs (B)				$175,314				$186,755				$197,471				$204,766				$215,151
Collective Trust Fund programs			18,327				20,000				22,511				22,762				22,723
Liquidity funds			10,665				11,775				11,939				11,808				11,224
Total assets under management				$204,306				$218,530				$231,921				$239,336				$249,098
Client assets under administration (C)			302,929				310,060				327,264				342,376				352,839
Total assets				$507,235				$528,590				$559,185				$581,712				$601,937

(A)	Client assets under administration in the Investment Managers segment include $50.7 billion of assets balances that require limited services and therefore are at fee levels below our normal full service assets (as of June 30, 2014).

(B)	Equity/Fixed Income programs include $5.0 billion of assets invested in various asset allocation funds at June 30, 2014.

(C)	In addition to the numbers presented, SEI also administers an additional $6.5 billion in Funds of Funds assets (as of

June 30, 2014) on which SEI does not earn an administration fee.

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SEI INVESTMENTS COMPANY

AVERAGE ASSET BALANCES

(In millions)

(Unaudited)

			2nd Qtr.				3rd Qtr.				4th Qtr.				1st Qtr.				2nd Qtr.
			2013				2013				2013				2014				2014
Private Banks:
Equity/Fixed Income programs				$12,959				$13,696				$14,901				$16,114				$17,829
Collective Trust Fund programs			10				11				11				14				12
Liquidity funds			5,093				5,142				5,218				5,757				5,429
Total assets under management				$18,062				$18,849				$20,130				$21,885				$23,270
Client assets under administration			13,183				13,760				14,702				15,366				15,069
Total assets				$31,245				$32,609				$34,832				$37,251				$38,339
Investment Advisors:
Equity/Fixed Income programs				$34,831				$35,618				$37,520				$39,005				$40,887
Collective Trust Fund programs			14				14				13				13				13
Liquidity funds			2,028				2,520				2,785				2,806				2,637
Total assets under management				$36,873				$38,152				$40,318				$41,824				$43,537
Institutional Investors:
Equity/Fixed Income programs				$63,466				$63,153				$65,750				$67,697				$70,706
Collective Trust Fund programs			105				107				110				103				134
Liquidity funds			2,975				3,091				2,720				2,571				2,664
Total assets under management				$66,546				$66,351				$68,580				$70,371				$73,504
Investment Managers:
Equity/Fixed Income programs				$75				$76				$75				$68				$68
Collective Trust Fund programs			18,205				19,259				21,345				22,004				22,447
Liquidity funds			500				613				592				738				824
Total assets under management				$18,780				$19,948				$22,012				$22,810				$23,339
Client assets under administration			286,018				292,627				303,131				320,644				333,373
Total assets				$304,798				$312,575				$325,143				$343,454				$356,712
Investments in New Businesses:
Equity/Fixed Income programs				$567				$584				$613				$623				$640
Liquidity funds			34				27				33				46				43
Total assets under management				$601				$611				$646				$669				$683
LSV Asset Management:
Equity/Fixed Income programs				$66,781				$69,463				$75,240				$76,306				$79,866
Total:
Equity/Fixed Income programs				$178,679				$182,590				$194,099				$199,813				$209,996
Collective Trust Fund programs			18,334				19,391				21,479				22,134				22,606
Liquidity funds			10,630				11,393				11,348				11,918				11,597
Total assets under management				$207,643				$213,374				$226,926				$233,865				$244,199
Client assets under administration			299,201				306,387				317,833				336,010				348,442
Total assets				$506,844				$519,761				$544,759				$569,875				$592,641

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