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 FIRST-QUARTER 2014 FINANCIAL RESULTS

SEI Approves Increase In Stock Repurchase Program

OAKS, Pa., April 23, 2014 -- SEI Investments Company (NASDAQ:SEIC) today announced financial results for the first-quarter 2014. Diluted earnings per share were $.43 in first-quarter 2014 compared to $.41 in first-quarter 2013. Diluted earnings per share reflect pre-tax gains of $5.6 million, or $.02 per share, and $22.1 million, or $.08 per share, from the sale of SEI Asset Korea, in the first-quarter 2014 and 2013, respectively.

In addition, on Tuesday, April 22, 2014, SEI's Board of Directors approved an increase in its stock repurchase program by an additional $200 million, increasing the available authorization under the program to approximately $212 million.

Consolidated Overview		For the Three Months Ended March 31,
(In thousands, except earnings per share)
		2014				2013				%
Revenues			$302,386				$271,879			11	%
Net income attributable to SEI		74,820				71,920				4	%
Diluted earnings per share			$0.43				$0.41			5	%

"First quarter results reflect continued progress across our company both in terms of financial results and the expanding market acceptance of our solutions," said Alfred P. West, Jr., SEI Chairman and CEO. “The continued implementation of our integrated business solutions contributed to increased assets under administration and assets under management during the quarter.

"These results reinforce our commitment to the implementation of SEI's long-term market strategies. We continue to invest in solutions we feel position us well for long-term success, sustainable growth, and increased shareholder value."

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Summary of First-Quarter Results by Business Segment

(In thousands)		For the Three Months Ended March 31,
		2014				2013				%
Private Banks:
Revenues			$105,179				$98,746			7	%
Expenses		100,190				96,298				4	%
Operating Profit		4,989				2,448				104	%
Gain on sale of subsidiary		5,582				22,112				NM
Total Profit		10,571				24,560				NM
Operating Margin (A)		5		%		2		%
Investment Advisors:
Revenues		66,424				55,191				20	%
Expenses		34,577				31,625				9	%
Operating Profit		31,847				23,566				35	%
Operating Margin		48		%		43		%
Institutional Investors:
Revenues		68,657				63,162				9	%
Expenses		34,095				31,509				8	%
Operating Profit		34,562				31,653				9	%
Operating Margin		50		%		50		%
Investment Managers:
Revenues		61,008				53,820				13	%
Expenses		39,184				35,162				11	%
Operating Profit		21,824				18,658				17	%
Operating Margin		36		%		35		%
Investments in New Businesses:
Revenues		1,118				960				16	%
Expenses		4,249				3,738				14	%
Operating Loss		(3,131		)		(2,778		)		NM
Totals:
Revenues			$302,386				$271,879			11	%
Expenses		212,295				198,332				7	%
Corporate overhead expenses		11,699				13,794				(15	)%
Noncontrolling interest reflected in segments		—				(289		)		NM
Income from operations			$78,392				$60,042			31	%

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

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First-Quarter Business Highlights:

•	Revenues increased in first-quarter 2014 as compared to both first-quarter 2013 and fourth-quarter 2013. 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.

•	Sales events, net of client losses, during first-quarter 2014 totaled approximately $23.1 million and are expected to generate net annualized recurring revenues of approximately $21.9 million when contract values are fully realized.

•

Our average assets under management, excluding LSV, increased $12.6 billion, or nine percent, to $157.6 billion in the first-quarter 2014, as compared to $145.0 billion during the first-quarter 2013, and increased $5.9 billion, or four percent, as compared to $151.7 billion during the fourth-quarter 2013. Average asset balances for the first-quarter 2013 include $7.0 billion in assets related to SEI Asset Korea (SEI AK), which was sold in first-quarter 2013 (see attached Ending and Average Asset Balances schedules for further details).

•	Our average assets under administration increased $60.1 billion, or 22 percent, to $336.0 billion in the first-quarter 2014, as compared to $275.9 billion during the first-quarter 2013, and increased $18.2 billion, or six percent, as compared to $317.8 billion during the fourth-quarter 2013 (see attached Ending and Average Asset Balances schedules for further details).

•	We recorded pre-tax gains of $5.6 million, or $.02 diluted earnings per share, and $22.1 million, or $.08 diluted earnings per share, from the sale of SEI AK in first-quarter 2014 and 2013, respectively. The operating results of SEI AK were included in the Private Banks business segment.

•	Income from LSV increased in first-quarter 2014 to $32.2 million as compared to $27.8 million in first-quarter 2013 due to an increase in assets under management from market appreciation and an increase in performance fees earned by LSV. Our ownership interest in LSV was approximately 39.3 percent in first-quarter 2014 and 39.8 percent in first-quarter 2013.

•	Amortization expense related to capitalized software increased to $9.2 million during the first-quarter 2014 as compared to $8.2 million during the first-quarter 2013 due to continued releases of the SEI Wealth PlatformSM.

•

The effective tax rates were 35.9 percent in first-quarter 2014, 34.9 percent in first-quarter 2013, and 35.2 percent in fourth-quarter 2013. Due to the expiration of the research and development tax credit on December 31, 2013, the first-quarter 2014 tax rate reflects no benefit for the tax credit, whereas the first-quarter 2013 tax rate reflects the benefit for 2012 and 2013. The increase in our tax rate was partially offset by an increase in the portion of pre-tax income in certain foreign jurisdictions which is taxed at a lower rate during the first-quarter 2014.

•	In first-quarter 2014, we repurchased 2.0 million shares of our common stock for $69.0 million.

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Earnings Conference Call

A conference call to review earnings is scheduled for 1:00 p.m. ET on April 23, 2014. Investors may listen to the call at www.seic.com/investors. The call may also be accessed at the financial services sections of numerous web sites, including Google Finance and Yahoo Finance. Investors may also listen to replays at these web sites, or by telephone at (USA) 1-800-475-6701; (International) 320-365-3844, access code 324787.

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 March 31, 2014, through its subsidiaries and partnerships in which the company has a significant interest, SEI manages or administers $582 billion in mutual fund and pooled or separately managed assets, including $239 billion in assets under management and $343 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 March 31,
		2014				2013
Asset management, admin. and distribution fees			$225,071				$198,633
Information processing and software servicing fees		69,178				64,532
Transaction–based and trade execution fees		8,137				8,714
Total revenues		302,386				271,879
Subadvisory, distribution and other asset mgmt costs		34,012				27,934
Software royalties and other information processing costs		8,553				7,487
Brokerage commissions		5,979				6,512
Compensation, benefits and other personnel		94,424				88,610
Stock-based compensation		2,823				5,293
Consulting, outsourcing and professional fees		34,933				31,849
Data processing and computer related		12,620				12,058
Facilities, supplies and other costs		15,852				18,148
Amortization		9,214				8,242
Depreciation		5,584				5,704
Total expenses		223,994				211,837
Income from operations		78,392				60,042
Net gain on investments		136				280
Interest and dividend income		777				1,053
Interest expense		(113		)		(113		)
Equity in earnings of unconsolidated affiliates		31,891				27,588
Gain on sale of subsidiary		5,582				22,112
Income before income taxes		116,665				110,962
Income taxes		41,845				38,692
Net income		74,820				72,270
Less: Net income attributable to the noncontrolling interest		—				(350		)
Net income attributable to SEI			$74,820				$71,920
Basic earnings per common share			$0.44				$0.42
Shares used to calculate basic earnings per share		169,306				172,598
Diluted earnings per common share			$0.43				$0.41
Shares used to calculate diluted earnings per share		173,828				176,005

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SEI INVESTMENTS COMPANY

BALANCE SHEETS

(In thousands)

(Unaudited)

		March 31,				December 31,
		2014				2013
Assets
Current Assets:
Cash and cash equivalents			$545,552				$578,273
Restricted cash		5,500				5,500
Receivables from regulated investment companies		43,272				39,364
Receivables, net		207,724				186,664
Securities owned		21,153				21,133
Other current assets		19,432				16,166
Total Current Assets		842,633				847,100
Property and equipment, net		121,039				118,995
Capitalized software, net		312,866				312,615
Investments available for sale		81,660				83,323
Trading securities		4,914				4,849
Investment in unconsolidated affiliates		61,756				61,370
Other assets, net		14,113				10,917
Total Assets			$1,438,981				$1,439,169
Liabilities and Equity
Current Liabilities:
Accounts payable			$8,373				$16,235
Accrued liabilities		141,664				188,123
Deferred income taxes, net		1,604				1,653
Deferred revenue		2,078				1,977
Total Current Liabilities		153,719				207,988
Deferred income taxes		71,578				66,572
Other long-term liabilities		9,312				8,607
Total Liabilities		234,609				283,167
Shareholders' Equity:
Common stock		1,691				1,692
Capital in excess of par value		758,645				721,219
Retained earnings		444,022				431,604
Accumulated other comprehensive income, net		14				1,487
Total Shareholders' Equity		1,204,372				1,156,002
Total Liabilities and Shareholders' Equity			$1,438,981				$1,439,169

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SEI INVESTMENTS COMPANY

ENDING ASSET BALANCES

(In millions)

(Unaudited)

			Mar. 31,				Jun. 30,				Sept. 30,				Dec 31,				Mar. 31,
			2013				2013				2013				2013				2014
Private Banks:
Equity/Fixed Income programs				$12,446				$12,876				$14,305				$15,472				$16,918
Collective Trust Fund programs			9				10				11				14				14
Liquidity funds			5,143				5,048				5,167				5,685				5,670
Total assets under management				$17,598				$17,934				$19,483				$21,171				$22,602
Client assets under administration			12,970				13,122				14,101				15,272				15,641
Total assets				$30,568				$31,056				$33,584				$36,443				$38,243
Investment Advisors:
Equity/Fixed Income programs				$34,166				$34,447				$36,203				$38,574				$39,981
Collective Trust Fund programs			15				14				14				11				13
Liquidity funds			2,094				2,145				2,779				2,846				2,802
Total assets under management				$36,275				$36,606				$38,996				$41,431				$42,796
Institutional Investors:
Equity/Fixed Income programs				$64,214				$61,927				$64,429				$66,548				$69,194
Collective Trust Fund programs			101				106				107				109				102
Liquidity funds			2,810				2,901				3,125				2,644				2,505
Total assets under management				$67,125				$64,934				$67,661				$69,301				$71,801
Investment Managers:
Equity/Fixed Income programs				$73				$75				$75				$69				$68
Collective Trust Fund programs			17,656				18,197				19,868				22,377				22,633
Liquidity funds			522				542				678				718				782
Total assets under management				$18,251				$18,814				$20,621				$23,164				$23,483
Client assets under administration (A)			275,632				289,807				295,959				311,992				326,735
Total assets				$293,883				$308,621				$316,580				$335,156				$350,218
Investments in New Businesses:
Equity/Fixed Income programs				$552				$572				$594				$619				$632
Liquidity funds			42				29				26				46				49
Total assets under management				$594				$601				$620				$665				$681
LSV Asset Management:
Equity/Fixed Income programs				$64,958				$65,417				$71,149				$76,189				$77,973
Total:
Equity/Fixed Income programs (B)				$176,409				$175,314				$186,755				$197,471				$204,766
Collective Trust Fund programs			17,781				18,327				20,000				22,511				22,762
Liquidity funds			10,611				10,665				11,775				11,939				11,808
Total assets under management				$204,801				$204,306				$218,530				$231,921				$239,336
Client assets under administration (C)			288,602				302,929				310,060				327,264				342,376
Total assets				$493,403				$507,235				$528,590				$559,185				$581,712

(A)	Client assets under administration in the Investment Managers segment include $51.3 billion of assets balances that require limited services and therefore are at fee levels below our normal full service assets (as of March 31, 2014).

(B)	Equity/Fixed Income programs include $4.7 billion of assets invested in various asset allocation funds at March 31, 2014.

(C)	In addition to the numbers presented, SEI also administers an additional $6.2 billion in Funds of Funds assets (as of

March 31, 2014) on which SEI does not earn an administration fee.

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SEI INVESTMENTS COMPANY

AVERAGE ASSET BALANCES

(In millions)

(Unaudited)

			1st Qtr.				2nd Qtr.				3rd Qtr.				4th Qtr.				1st Qtr.
			2013				2013				2013				2013				2014
Private Banks:
Equity/Fixed Income programs				$19,197				$12,959				$13,696				$14,901				$16,114
Collective Trust Fund programs			11				10				11				11				14
Liquidity funds			5,556				5,093				5,142				5,218				5,757
Total assets under management				$24,764				$18,062				$18,849				$20,130				$21,885
Client assets under administration			12,860				13,183				13,760				14,702				15,366
Total assets				$37,624				$31,245				$32,609				$34,832				$37,251
Investment Advisors:
Equity/Fixed Income programs				$33,189				$34,831				$35,618				$37,520				$39,005
Collective Trust Fund programs			14				14				14				13				13
Liquidity funds			2,085				2,028				2,520				2,785				2,806
Total assets under management				$35,288				$36,873				$38,152				$40,318				$41,824
Institutional Investors:
Equity/Fixed Income programs				$63,642				$63,466				$63,153				$65,750				$67,697
Collective Trust Fund programs			101				105				107				110				103
Liquidity funds			2,960				2,975				3,091				2,720				2,571
Total assets under management				$66,703				$66,546				$66,351				$68,580				$70,371
Investment Managers:
Equity/Fixed Income programs				$68				$75				$76				$75				$68
Collective Trust Fund programs			17,129				18,205				19,259				21,345				22,004
Liquidity funds			511				500				613				592				738
Total assets under management				$17,708				$18,780				$19,948				$22,012				$22,810
Client assets under administration			263,054				286,018				292,627				303,131				320,644
Total assets				$280,762				$304,798				$312,575				$325,143				$343,454
Investments in New Businesses:
Equity/Fixed Income programs				$542				$567				$584				$613				$623
Liquidity funds			38				34				27				33				46
Total assets under management				$580				$601				$611				$646				$669
LSV Asset Management:
Equity/Fixed Income programs				$63,997				$66,781				$69,463				$75,240				$76,306
Total:
Equity/Fixed Income programs (A)				$180,635				$178,679				$182,590				$194,099				$199,813
Collective Trust Fund programs			17,255				18,334				19,391				21,479				22,134
Liquidity funds			11,150				10,630				11,393				11,348				11,918
Total assets under management				$209,040				$207,643				$213,374				$226,926				$233,865
Client assets under administration			275,914				299,201				306,387				317,833				336,010
Total assets				$484,954				$506,844				$519,761				$544,759				$569,875

(A)	Equity/Fixed Income programs in the Private Banks segment for first-quarter 2013 includes $7.0 billion in assets related to SEI Asset Korea, which was sold in first-quarter 2013.

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