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 FOURTH-QUARTER 2014 FINANCIAL RESULTS

Income from Operations Increases 32 Percent

OAKS, Pa., January 28, 2015 -- SEI Investments Company (NASDAQ:SEIC) today announced financial results for the fourth-quarter 2014. Diluted earnings per share were $.45 in fourth-quarter 2014 compared to $.37 in fourth-quarter 2013. Earnings were negatively affected by an after-tax charge of approximately $10.7 million related to the write down of an equity investment in a wealth services firm based in China. This charge was partially offset by the tax benefit derived from the reinstatement of the Research and Development Tax Credit during the fourth-quarter 2014 (see Fourth-Quarter Business Highlights for more information).

Consolidated Overview
(In thousands, except earnings per share)		For the Three Months Ended December 31,										For the Twelve Months Ended December 31,
		2014				2013				%		2014				2013				%
Revenues			$322,757				$299,024			8%			$1,266,005				$1,126,132			12%
Net income attributable to SEI		77,097				65,515				18%		318,713				288,124				11%
Diluted earnings per share			$0.45				$0.37			22%			$1.85				$1.64			13%

"Our financial results for the fourth quarter finish a year of solid progress across all of our units," said Alfred P. West, Jr., SEI Chairman and CEO. "In addition, the continued market acceptance of our solutions validate the ongoing investments we make to effectively serve our clients in the rapidly changing wealth, investment and asset management markets.

"As always, our focus on creating long-term sustainable growth and increased shareholder value is unwavering."

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Summary of Fourth-Quarter Results by Business Segment

(In thousands)		For the Three Months Ended December 31,										For the Twelve Months Ended December 31,
		2014				2013				%		2014				2013				%
Private Banks:
Revenues			$111,959				$105,880			6%			$441,467				$397,138			11%
Expenses		99,975				102,767				(3)%		399,620				392,399				2%
Operating Profit		11,984				3,113				NM		41,847				4,739				NM
Gain on sale of subsidiary		—				—				—%		5,582				22,112				NM
Total Profit		11,984				3,113				NM			$47,429				$26,851			NM
Operating Margin (A)		11		%		3		%				9		%		1		%
Investment Advisors:
Revenues		72,872				65,384				11%		283,811				241,252				18%
Expenses		38,448				35,671				8%		146,500				133,962				9%
Operating Profit		34,424				29,713				16%		137,311				107,290				28%
Operating Margin		47		%		45		%				48		%		44		%
Institutional Investors:
Revenues		72,466				67,273				8%		284,677				257,658				10%
Expenses		36,044				35,623				1%		140,659				133,218				6%
Operating Profit		36,422				31,650				15%		144,018				124,440				16%
Operating Margin		50		%		47		%				51		%		48		%
Investment Managers:
Revenues		64,211				59,539				8%		251,310				226,081				11%
Expenses		40,387				39,545				2%		159,176				148,977				7%
Operating Profit		23,824				19,994				19%		92,134				77,104				19%
Operating Margin		37		%		34		%				37		%		34		%
Investments in New Businesses:
Revenues		1,249				948				32%		4,740				4,003				18%
Expenses		5,063				3,949				28%		18,377				15,723				17%
Operating Loss		(3,814		)		(3,001		)		NM		(13,637		)		(11,720		)		NM
Totals:
Revenues			$322,757				$299,024			8%			$1,266,005				$1,126,132			12%
Expenses		219,917				217,555				1%		864,332				824,279				5%
Corporate overhead expenses		12,576				13,014				(3)%		48,889				53,733				(9)%
NCI reflected in segments		—				—				—%		—				(289		)		NM
Income from operations			$90,264				$68,455			32%			$352,784				$248,409			42%

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

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Fourth-Quarter Business Highlights:

•	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. Our average assets under management, excluding LSV, increased $17.4 billion, or 11 percent, to $169.1 billion in the fourth-quarter 2014, as compared to $151.7 billion during the fourth-quarter 2013.

•	Our average assets under administration increased $54.5 billion, or 17 percent, to $372.4 billion in the fourth-quarter 2014, as compared to $317.8 billion during the fourth-quarter 2013 (see attached Ending and Average Asset Balances schedules for further details).

•	Sales events, net of client losses, during fourth-quarter 2014 totaled approximately $23.1 million and are expected to generate net annualized recurring revenues of approximately $20.0 million when contract values are fully realized.

•	All four core business segments realized revenue and profit margin growth as compared to fourth-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 $3.2 million, or 10 percent, to $35.3 million in fourth-quarter 2014 as compared to $32.1 million in fourth-quarter 2013 due to an increase in assets under management from market appreciation and an increase in performance fees earned by LSV.

•

We recorded an after-tax charge of approximately $10.7 million, or $0.06 diluted earnings per share, during the fourth-quarter 2014 for the write down of our investment in Gao Fu, a wealth services firm based in China. The after-tax earnings per share impact is a result of the non-deductibility of the charge for U.S. federal tax purposes due to the investment in Gao Fu being held by an Irish subsidiary. This charge against earnings is reflected in Equity in earnings of unconsolidated affiliates on the accompanying Consolidated Statements of Operations.

•	Stock-based compensation expense during the fourth-quarter 2014 decreased by $6.9 million primarily 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 was $10.0 million during the fourth-quarter 2014 as compared to $9.0 million during the fourth-quarter 2013 due to continued releases of the SEI Wealth PlatformSM.

•	Our effective tax rates were 33.3 percent in fourth-quarter 2014 and 35.2 percent in fourth-quarter 2013. The decrease in our tax rate was primarily due to reinstatement of the Research and Development Tax Credit, which occurred during the fourth-quarter 2014. This tax benefit was offset by the non-deductibility of a significant portion of the Gao Fu charge noted above.

•	In fourth-quarter 2014, we repurchased 1.6 million shares of our common stock for $62.6 million.

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Earnings Conference Call

A conference call to review earnings is scheduled for 2 p.m. Eastern time on January 28, 2015. Investors may listen to the call at 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 351742.

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 December 31, 2014, through its subsidiaries and partnerships in which the company has a significant interest, SEI manages or administers $625 billion in mutual fund and pooled or separately managed assets, including $253 billion in assets under management and $372 billion in client assets under administration. For more information, visit 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 December 31,								For the Twelve Months Ended December 31,
		2014				2013				2014				2013
Asset management, admin. and distribution fees			$242,966				$220,585				$948,932				$831,720
Information processing and software servicing fees		70,437				70,085				285,463				261,691
Transaction–based and trade execution fees		9,354				8,354				31,610				32,721
Total revenues		322,757				299,024				1,266,005				1,126,132
Subadvisory, distribution and other asset mgmt costs		38,798				33,194				149,791				121,989
Software royalties and other information processing costs		7,990				8,343				33,522				31,255
Brokerage commissions		6,785				6,358				23,002				24,649
Compensation, benefits and other personnel		95,663				92,817				376,873				357,453
Stock-based compensation		3,982				10,868				13,463				37,865
Consulting, outsourcing and professional fees		33,535				32,732				136,818				131,399
Data processing and computer related		12,959				14,373				52,512				51,401
Facilities, supplies and other costs		16,759				17,333				66,113				64,613
Amortization		10,068				9,104				38,679				34,602
Depreciation		5,954				5,447				22,448				22,497
Total expenses		232,493				230,569				913,221				877,723
Income from operations		90,264				68,455				352,784				248,409
Net gain on investments		565				21				614				659
Interest and dividend income		1,106				828				3,354				3,248
Interest expense		(116		)		(113		)		(458		)		(535		)
Equity in earnings of unconsolidated affiliates		23,706				31,872				127,786				118,076
Gain on sale of subsidiary		—				—				5,582				22,112
Other income		—				—				—				43,429
Income before income taxes		115,525				101,063				489,662				435,398
Income taxes		38,428				35,548				170,949				146,924
Net income		77,097				65,515				318,713				288,474
Less: Net income attributable to the noncontrolling interest		—				—				—				(350		)
Net income attributable to SEI			$77,097				$65,515				$318,713				$288,124
Basic earnings per common share			$0.46				$0.39				$1.89				$1.68
Shares used to calculate basic earnings per share		167,146				170,113				168,246				171,561
Diluted earnings per common share			$0.45				$0.37				$1.85				$1.64
Shares used to calculate diluted earnings per share		171,326				174,766				172,565				175,718

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SEI INVESTMENTS COMPANY

BALANCE SHEETS

(In thousands)

(Unaudited)

		December 31,				December 31,
		2014				2013
Assets
Current Assets:
Cash and cash equivalents			$667,446				$578,273
Restricted cash		5,801				5,500
Receivables from regulated investment companies		48,393				39,364
Receivables, net		194,419				186,664
Securities owned		21,175				21,133
Other current assets		18,193				16,166
Total Current Assets		955,427				847,100
Property and Equipment, net		125,535				118,995
Capitalized software, net		309,040				312,615
Investments available for sale		77,609				83,323
Investments in affiliated funds, at fair value		4,523				4,849
Investment in unconsolidated affiliates		54,290				61,370
Other assets, net		16,451				10,917
Total Assets			$1,542,875				$1,439,169
Liabilities and Equity
Current Liabilities:
Accounts payable			$10,588				$16,235
Accrued liabilities		207,429				188,123
Deferred income taxes, net		1,414				1,653
Deferred revenue		1,749				1,977
Total Current Liabilities		221,180				207,988
Deferred income taxes		63,755				66,572
Other long-term liabilities		10,327				8,607
Total Liabilities		295,262				283,167
Shareholders' Equity:
Common stock		1,667				1,692
Capital in excess of par value		834,615				721,219
Retained earnings		420,226				431,604
Accumulated other comprehensive (loss) income, net		(8,895		)		1,487
Total Shareholders' Equity		1,247,613				1,156,002
Total Liabilities and Shareholders' Equity			$1,542,875				$1,439,169

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SEI INVESTMENTS COMPANY

ENDING ASSET BALANCES

(In millions)

(Unaudited)

			Dec 31,				Mar. 31,				Jun. 30,				Sept. 30,				Dec 31,
			2013				2014				2014				2014				2014
Private Banks:
Equity/Fixed Income programs				$15,472				$16,918				$18,679				$18,634				$18,666
Collective Trust Fund programs			14				14				12				11				8
Liquidity funds			5,685				5,670				5,274				5,331				5,889
Total assets under management				$21,171				$22,602				$23,965				$23,976				$24,563
Client assets under administration			15,272				15,641				15,347				16,288				16,741
Total assets				$36,443				$38,243				$39,312				$40,264				$41,304
Investment Advisors:
Equity/Fixed Income programs				$38,574				$39,981				$42,125				$42,260				$43,845
Collective Trust Fund programs			11				13				13				9				9
Liquidity funds			2,846				2,802				2,696				3,086				3,173
Total assets under management				$41,431				$42,796				$44,834				$45,355				$47,027
Institutional Investors:
Equity/Fixed Income programs				$66,548				$69,194				$71,598				$72,006				$72,828
Collective Trust Fund programs			109				102				100				98				95
Liquidity funds			2,644				2,505				2,414				2,891				2,929
Total assets under management				$69,301				$71,801				$74,112				$74,995				$75,852
Investment Managers:
Equity/Fixed Income programs				$69				$68				$64				$64				$27
Collective Trust Fund programs			22,377				22,633				22,598				21,297				20,833
Liquidity funds			718				782				802				1,018				946
Total assets under management				$23,164				$23,483				$23,464				$22,379				$21,806
Client assets under administration (A)			311,992				326,735				337,492				346,841				355,890
Total assets				$335,156				$350,218				$360,956				$369,220				$377,696
Investments in New Businesses:
Equity/Fixed Income programs				$619				$632				$659				$703				$736
Liquidity funds			46				49				38				118				98
Total assets under management				$665				$681				$697				$821				$834
LSV Asset Management:
Equity/Fixed Income programs				$76,189				$77,973				$82,026				$81,536				$82,665
Total:
Equity/Fixed Income programs (B)				$197,471				$204,766				$215,151				$215,203				$218,767
Collective Trust Fund programs			22,511				22,762				22,723				21,415				20,945
Liquidity funds			11,939				11,808				11,224				12,444				13,035
Total assets under management				$231,921				$239,336				$249,098				$249,062				$252,747
Client assets under administration (C)			327,264				342,376				352,839				363,129				372,631
Total assets				$559,185				$581,712				$601,937				$612,191				$625,378

(A)	Client assets under administration in the Investment Managers segment include $53.0 billion of assets balances that require limited services and therefore are at fee levels below our normal full service assets (as of December 31, 2014).

(B)	Equity/Fixed Income programs include $5.2 billion of assets invested in various asset allocation funds at December 31, 2014.

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

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

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SEI INVESTMENTS COMPANY

AVERAGE ASSET BALANCES

(In millions)

(Unaudited)

			4th Qtr.				1st Qtr.				2nd Qtr.				3rd Qtr.				4th Qtr.
			2013				2014				2014				2014				2014
Private Banks:
Equity/Fixed Income programs				$14,901				$16,114				$17,829				$18,804				$18,606
Collective Trust Fund programs			11				14				12				12				10
Liquidity funds			5,218				5,757				5,429				5,466				5,537
Total assets under management				$20,130				$21,885				$23,270				$24,282				$24,153
Client assets under administration			14,702				15,366				15,069				15,707				16,451
Total assets				$34,832				$37,251				$38,339				$39,989				$40,604
Investment Advisors:
Equity/Fixed Income programs				$37,520				$39,005				$40,887				$42,389				$43,104
Collective Trust Fund programs			13				13				13				11				9
Liquidity funds			2,785				2,806				2,637				2,830				3,087
Total assets under management				$40,318				$41,824				$43,537				$45,230				$46,200
Institutional Investors:
Equity/Fixed Income programs				$65,750				$67,697				$70,706				$72,010				$72,771
Collective Trust Fund programs			110				103				134				98				96
Liquidity funds			2,720				2,571				2,664				2,883				2,973
Total assets under management				$68,580				$70,371				$73,504				$74,991				$75,840
Investment Managers:
Equity/Fixed Income programs				$75				$68				$68				$64				$64
Collective Trust Fund programs			21,345				22,004				22,447				22,123				21,140
Liquidity funds			592				738				824				962				904
Total assets under management				$22,012				$22,810				$23,339				$23,149				$22,108
Client assets under administration			303,131				320,644				333,373				344,661				355,903
Total assets				$325,143				$343,454				$356,712				$367,810				$378,011
Investments in New Businesses:
Equity/Fixed Income programs				$613				$623				$640				$688				$731
Liquidity funds			33				46				43				139				97
Total assets under management				$646				$669				$683				$827				$828
LSV Asset Management:
Equity/Fixed Income programs				$75,240				$76,306				$79,866				$82,402				$83,187
Total:
Equity/Fixed Income programs				$194,099				$199,813				$209,996				$216,357				$218,463
Collective Trust Fund programs			21,479				22,134				22,606				22,244				21,255
Liquidity funds			11,348				11,918				11,597				12,280				12,598
Total assets under management				$226,926				$233,865				$244,199				$250,881				$252,316
Client assets under administration			317,833				336,010				348,442				360,368				372,354
Total assets				$544,759				$569,875				$592,641				$611,249				$624,670

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