10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

________________________________________

FORM 10-Q

________________________________________

(Mark One)*



ý	Quarterly report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

for the quarterly period ended March 31, 2016



¨	Transition report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

for the transition period from to

0-10200

(Commission File Number)

________________________________________

SEI INVESTMENTS COMPANY

(Exact name of registrant as specified in its charter)

________________________________________



Pennsylvania		23-1707341
(State or other jurisdiction of incorporation or organization)		(IRS Employer Identification Number)

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)

________________________________________

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 ý No ¨

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted 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 and post such files). Yes ý No ¨

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company. See definitions of “large accelerated filer,” “accelerated filer” and “smaller reporting company” in Rule 12b-2 of the Exchange Act.



Large accelerated filer	ý	Accelerated filer	¨

Non-accelerated filer	¨ (Do not check if a smaller reporting company)	Smaller reporting company	¨

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes ¨ No ý

The number of shares outstanding of the registrant’s common stock as of April 19, 2016 was 161,993,066.

SEI Investments Company TABLE OF CONTENTS



PART I - FINANCIAL INFORMATION
		Page
Item 1.	Financial Statements.	2
	Consolidated Balance Sheets (Unaudited) -- March 31, 2016 and December 31, 2015	2
	Consolidated Statements of Operations (Unaudited) -- For the Three Months Ended March 31, 2016 and 2015	3
	Consolidated Statements of Comprehensive Income (Unaudited) -- For the Three Months Ended March 31, 2016 and 2015	4
	Consolidated Statements of Cash Flows (Unaudited) -- For the Three Months Ended March 31, 2016 and 2015	5
	Notes to Consolidated Financial Statements	6
Item 2.	Management's Discussion and Analysis of Financial Condition and Results of Operations.	20
Item 3.	Quantitative and Qualitative Disclosures About Market Risk.	31
Item 4.	Controls and Procedures.	31

PART II - OTHER INFORMATION

Item 1.	Legal Proceedings.	32
Item 1A.	Risk Factors.	33
Item 2.	Unregistered Sales of Equity Securities and Use of Proceeds.	34
Item 6.	Exhibits.	34
	Signatures	35

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PART I. FINANCIAL INFORMATION

Item 1. Consolidated Financial Statements.

SEI Investments Company

Consolidated Balance Sheets

(unaudited)

(In thousands, except par value)



	March 31, 2016		December 31, 2015
Assets
Current Assets:
Cash and cash equivalents	$	638,253	$	679,661
Restricted cash	5,500		5,500
Receivables from investment products	51,633		48,098
Receivables, net of allowance for doubtful accounts of $700 and $649	229,558		223,023
Securities owned	21,264		21,235
Other current assets	28,829		26,207
Total Current Assets	975,037		1,003,724
Property and Equipment, net of accumulated depreciation of $266,022 and $259,501	141,790		143,977
Capitalized Software, net of accumulated amortization of $270,313 and $259,358	289,044		290,522
Investments Available for Sale	78,356		81,294
Investments in Affiliated Funds, at fair value	4,183		4,039
Investment in Unconsolidated Affiliates	44,247		49,580
Deferred Income Taxes	4,117		—
Other Assets, net	14,072		15,492
Total Assets	$	1,550,846	$	1,588,628



Liabilities and Equity
Current Liabilities:
Accounts payable	$	4,354		$	4,511
Accrued liabilities	165,005			217,587
Deferred revenue	2,936			2,385
Total Current Liabilities	172,295			224,483
Deferred Income Taxes	66,410			63,028
Other Long-term Liabilities	11,676			11,397
Total Liabilities	250,381			298,908
Commitments and Contingencies
Shareholders' Equity:
Common stock, $.01 par value, 750,000 shares authorized; 161,908 and 163,733 shares issued and outstanding	1,619			1,637
Capital in excess of par value	912,506			910,513
Retained earnings	408,684			402,860
Accumulated other comprehensive loss, net	(22,344		)	(25,290		)
Total Shareholders' Equity	1,300,465			1,289,720
Total Liabilities and Shareholders' Equity	$	1,550,846		$	1,588,628

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

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SEI Investments Company

Consolidated Statements of Operations

(unaudited)

(In thousands, except per share data)



	Three Months Ended March 31,
	2016			2015
Revenues:
Asset management, administration and distribution fees	$	251,437		$	246,768
Information processing and software servicing fees	73,399			70,653
Transaction-based and trade execution fees	9,427			8,023
Total revenues	334,263			325,444
Expenses:
Subadvisory, distribution and other asset management costs	39,195			38,517
Software royalties and other information processing costs	7,748			7,509
Brokerage commissions	7,108			5,972
Compensation, benefits and other personnel	101,931			94,186
Stock-based compensation	3,789			3,750
Consulting, outsourcing and professional fees	38,506			35,628
Data processing and computer related	15,718			13,400
Facilities, supplies and other costs	15,997			17,059
Amortization	11,012			10,358
Depreciation	6,447			5,995
Total expenses	247,451			232,374
Income from operations	86,812			93,070
Net (loss) gain from investments	(126		)	250
Interest and dividend income	1,083			969
Interest expense	(114		)	(113		)
Equity in earnings of unconsolidated affiliates	29,192			34,033
Gain on sale of subsidiary	2,791			2,791
Income before income taxes	119,638			131,000
Income taxes	42,141			46,389
Net income	77,497			84,611
Basic earnings per common share	$	0.48		$	0.51
Shares used to compute basic earnings per share	163,013			166,695
Diluted earnings per common share	$	0.47		$	0.50
Shares used to compute diluted earnings per share	166,145			170,703

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

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SEI Investments Company

Consolidated Statements of Comprehensive Income

(unaudited)

(In thousands)



	Three Months Ended March 31,
	2016			2015
Net income		$	77,497			$	84,611
Other comprehensive gain (loss), net of tax:
Foreign currency translation adjustments		2,429				(8,783		)
Unrealized gain (loss) on investments:
Unrealized gains during the period, net of income taxes of $(191) and $(25)	330			7
Less: reclassification adjustment for losses (gains) realized in net income, net of income taxes of $(103) and $52	187	517		(94	)	(87		)
Total other comprehensive gain (loss), net of tax		2,946				(8,870		)
Comprehensive income		$	80,443			$	75,741

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

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SEI Investments Company

Consolidated Condensed Statements of Cash Flows

(unaudited)

(In thousands)



	Three Months Ended March 31,
	2016			2015
Cash flows from operating activities:
Net income	$	77,497		$	84,611
Adjustments to reconcile net income to net cash provided by operating activities (See Note 1)	524			(6,681		)
Net cash provided by operating activities	78,021			77,930
Cash flows from investing activities:
Additions to restricted cash	—			(4		)
Additions to property and equipment	(4,609		)	(7,386		)
Additions to capitalized software	(9,477		)	(7,989		)
Purchases of marketable securities	(8,652		)	(4,107		)
Prepayments and maturities of marketable securities	12,090			7,375
Sales of marketable securities	185			—
Receipt of contingent payment from sale of SEI AK	2,791			2,791
Other investing activities	200			(1,000		)
Net cash used in investing activities	(7,472		)	(10,320		)
Cash flows from financing activities:
Purchase and retirement of common stock	(78,372		)	(67,534		)
Proceeds from issuance of common stock	6,476			19,209
Tax benefit on stock options exercised	624			3,268
Payment of dividends	(42,677		)	(40,178		)
Net cash used in financing activities	(113,949		)	(85,235		)
Effect of exchange rate changes on cash and cash equivalents	1,992			(6,561		)
Net decrease in cash and cash equivalents	(41,408		)	(24,186		)
Cash and cash equivalents, beginning of period	679,661			667,446
Cash and cash equivalents, end of period	$	638,253		$	643,260

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

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Notes to Consolidated Financial Statements

(all figures are in thousands except share and per share data)

Note 1. Summary of Significant Accounting Policies

Nature of Operations

SEI Investments Company (the Company), a Pennsylvania corporation, provides investment processing, investment management, and investment operations solutions to financial institutions, financial advisors, institutional investors, investment managers and ultra-high-net-worth families in the United States, Canada, the United Kingdom, continental Europe and various other locations throughout the world. Investment processing solutions consist of application and business process outsourcing services, professional services and transaction-based services. Revenues from investment processing solutions are recognized in Information processing and software servicing fees on the accompanying Consolidated Statements of Operations, except for fees earned associated with trade execution services which are recognized in Transaction-based and trade execution fees.

Investment management programs consist of mutual funds, alternative investments and separate accounts. These include a series of money market, equity, fixed-income and alternative investment portfolios, primarily in the form of registered investment companies. The Company serves as the administrator and investment advisor for many of these products. Revenues from investment management programs are recognized in Asset management, administration and distribution fees on the accompanying Consolidated Statements of Operations.

Investment operations solutions offer investment managers support for traditional investment products such as mutual funds, collective investment trusts, exchange-traded funds, and institutional and separate accounts, by providing outsourcing services including fund and investment accounting, administration, reconciliation, investor servicing and client reporting. These solutions also provide support to managers focused on alternative investments who manage hedge funds, funds of hedge funds, private equity funds and real estate funds, across registered, partnership and separate account structures domiciled in the United States and overseas. Revenues from investment operations solutions 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, 2016, the results of operations for the three months ended March 31, 2016 and 2015, and cash flows for the three month periods ended March 31, 2016 and 2015. 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, 2015.

There have been no significant changes in significant accounting policies during the three months ended March 31, 2016 as compared to the significant accounting policies described in the Company’s Annual Report on Form 10-K for the year ended December 31, 2015 with the exception of the adoption of Accounting Standards Update (ASU) No. 2015-02, Consolidation (Topic 810) - Amendments to the Consolidation Analysis (See Note 3) and ASU No. 2015-07, Fair Value Measurement (Topic 820) - Disclosures for Investments in Certain Entities That Calculate Net Asset Value per Share (See Note 5).

Cash and Cash Equivalents

Cash and cash equivalents includes $402,910 and $448,957 at March 31, 2016 and December 31, 2015, respectively, primarily invested in SEI-sponsored open-ended money market mutual funds. The SEI-sponsored mutual funds are Level 1 assets.

Restricted Cash

Restricted cash includes $5,000 at March 31, 2016 and December 31, 2015 segregated for regulatory purposes related to trade-execution services conducted by SEI Investments (Europe) Limited. Restricted cash also includes $500 at March 31, 2016 and December 31, 2015, respectively, 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 for broker-dealers.

Capitalized Software

The Company capitalized $9,477 and $7,989 of software development costs during the three months ended March 31, 2016 and 2015, respectively. The Company's software development costs primarily relate to the continued development of the SEI Wealth Platform^SM(the Platform). The Company capitalized $7,645 and $7,330 of software development costs for

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significant enhancements to the Platform during the three months ended March 31, 2016 and 2015, respectively. As of March 31, 2016, the net book value of the Platform was $282,311. The Platform has an estimated useful life of 15 years and a weighted average remaining life of 6.3 years. Amortization expense for the Platform was $10,955 and $10,301 during the three months ended March 31, 2016 and 2015, respectively. The Company also capitalized $1,832 and $659 of software development costs during the three months ended March 31, 2016 and 2015, respectively, related to new technological capabilities for the Investment Managers segment.

Earnings per Share

The calculations of basic and diluted earnings per share for the three months ended March 31, 2016 and 2015 are:



	For the Three Months Ended March 31, 2016
	Income (Numerator)		Shares (Denominator)	Per Share Amount
Basic earnings per common share	$	77,497	163,013,000	$	0.48
Dilutive effect of stock options	—		3,132,000
Diluted earnings per common share	$	77,497	166,145,000	$	0.47



	For the Three Months Ended March 31, 2015
	Income (Numerator)		Shares (Denominator)	Per Share Amount
Basic earnings per common share	$	84,611	166,695,000	$	0.51
Dilutive effect of stock options	—		4,008,000
Diluted earnings per common share	$	84,611	170,703,000	$	0.50

Employee stock options to purchase 10,506,000 and 10,051,000 shares of common stock, with an average exercise price of $34.05 and $30.02, were outstanding during the three months ended March 31, 2016 and 2015, respectively, but not included in the computation of diluted earnings per common share because either the performance conditions have not been satisfied or would have been satisfied if the reporting date was the end of the contingency period or the option’s 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.

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Statements of Cash Flows

For purposes of the Consolidated Statements of Cash Flows, the Company considers investment instruments purchased with an original maturity of three months or less to be cash equivalents.

The following table provides the details of the adjustments to reconcile net income to net cash provided by operating activities for the three months ended March 31:



	2016			2015
Net income	$	77,497		$	84,611
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	6,447			5,995
Amortization	11,012			10,358
Equity in earnings of unconsolidated affiliates	(29,192		)	(34,033		)
Distributions received from unconsolidated affiliate	34,525			37,003
Stock-based compensation	3,789			3,750
Provision for losses on receivables	51			(117		)
Deferred income tax expense	(1,029		)	(102		)
Gain from sale of SEI AK	(2,791		)	(2,791		)
Net loss (gain) from investments	126			(250		)
Change in other long-term liabilities	279			464
Change in other assets	1,099			100
Other	676			(1,628		)
Change in current asset and liabilities
Decrease (increase) in
Receivables from investment products	(3,535		)	1,387
Receivables	(6,585		)	(6,137		)
Other current assets	(2,622		)	(6,835		)
Increase (decrease) in
Accounts payable	(157		)	(3,902		)
Accrued liabilities	(12,120		)	(11,812		)
Deferred revenue	551			1,869
Total adjustments	524			(6,681		)
Net cash provided by operating activities	$	78,021		$	77,930

New Accounting Pronouncements

On May 28, 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers (ASU 2014-09), requiring an entity to recognize the amount of revenue to which it expects to be entitled for the transfer of promised goods or services to customers. ASU 2014-09 also requires additional disclosure about the nature, amount, timing and uncertainty of revenue and cash flows arising from customer contracts, including significant judgments and changes in judgments and assets recognized from costs incurred to obtain or fulfill a contract. The updated standard permits the use of either the retrospective or cumulative effect transition method. ASU 2014-09 currently becomes effective for the Company during the first quarter 2018. The Company is currently evaluating the transition method that will be elected and the effect that the updated standard will have on its consolidated financial statements and related disclosures.

In March 2016, the FASB issued ASU No. 2016-08, Principal versus Agent Considerations (Reporting Revenue Gross versus Net) (ASU 2016-08), that amends the principal versus agent guidance in ASU 2014-09. ASU 2016-08 clarifies that the analysis must focus on whether the entity has control of the goods or services before they are transferred to the customer. ASU 2016-08 also provides additional guidance about how to apply the control principle when services are provided and when goods or services are combined with other goods or services. The effective date of the standard for the Company will coincide with ASU 2014-09 during the first quarter 2018. The Company is currently evaluating the effect that the updated standard will have on its consolidated financial statements and related disclosures.

In April 2016, the FASB issued ASU No. 2016-10, Identifying Performance Obligations and Licensing (ASU 2016-10) that amends the revenue guidance in ASU 2014-09 on identifying performance obligations and accounting for licenses of

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intellectual property. ASU 2016-10 changed the FASB's previous proposals on renewals of right-to-use licenses and contractual restrictions. The effective date of the standard for the Company will coincide with ASU 2014-09 during the first quarter 2018. The Company is currently evaluating the effect that the updated standard will have on its consolidated financial statements and related disclosures.

In January 2016, the FASB issued ASU No. 2016-01, Recognition and Measurement of Financial Assets and Financial Liabilities (ASU 2016-01) that will significantly change the income statement impact of equity investments held by an entity, and the recognition of changes in fair value of financial liabilities when the fair value option is elected. ASU 2016-01 becomes effective for the Company during the first quarter 2018. The Company is currently evaluating the effect that the updated standard will have on its consolidated financial statements and related disclosures.

In February 2016, the FASB issued ASU No. 2016-02, Leases (ASU 2016-02) requiring lessees to recognize a right-of-use asset and a lease liability on the balance sheet for all leases with the exception of short-term leases. For lessees, leases will continue to be classified as either operating or finance leases in the income statement. Lessor accounting is similar to the current model but updated to align with certain changes to the lessee model. Lessors will continue to classify leases as operating, direct financing or sales-type leases. The new standard must be adopted using a modified retrospective transition and requires application of the new guidance at the beginning of the earliest comparative period presented. The updated standard is effective for the Company beginning in the first quarter of 2019. Early adoption is permitted. The Company is currently evaluating the transition method that will be elected and the effect that the updated standard will have on its consolidated financial statements and related disclosures.

In March 2016, the FASB issued ASU No. 2016-09, Improvements to Employee Share-Based Payment Accounting (ASU 2016-09) requiring an entity to record all excess tax benefits and tax deficiencies as an income tax benefit or expense in the income statement. ASU 2016-09 will also require an entity to elect an accounting policy to either estimate the number of forfeitures or account for forfeitures when they occur. ASU 2016-09 becomes effective for the Company during the first quarter 2017. The Company is currently evaluating the effect that the updated standard will have on its consolidated financial statements and related disclosures.

Reclassifications

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


Note 2.	Investment in Unconsolidated Affiliates

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 mutual funds. The Company accounts for its interest in LSV using the equity method because of its less than 50 percent ownership. The Company’s interest in the net assets of LSV is reflected in Investment in unconsolidated affiliates on the accompanying Consolidated Balance Sheets and its interest in the earnings of LSV is reflected in Equity in earnings of unconsolidated affiliates on the accompanying Consolidated Statements of Operations.

At March 31, 2016, the Company’s total investment in LSV was $44,247. The Company receives partnership distributions from LSV on a quarterly basis. The Company received partnership distributions from LSV of $34,525 and $37,003 in the three months ended March 31, 2016 and 2015, respectively.

The Company’s proportionate share in the earnings of LSV was $29,192 and $34,345 during the three months ended March 31, 2016 and 2015, respectively.

The following table contains the condensed financial operations of LSV for the three months ended March 31, 2016 and 2015:



	Three Months Ended March 31,
	2016		2015
Revenues	$	92,653	$	105,895
Net income	74,457		87,425

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As of March 31, 2016, the Company's total partnership interest in LSV was approximately 39.2 percent. In April 2016, LSV provided an interest in the partnership to select key employees which reduced the ownership percentage of each existing partner on a pro-rata basis. As a result, the Company's total partnership interest in LSV was reduced to approximately 38.9 percent.

Guaranty Agreement with LSV Employee Group III

In October 2012, LSV Employee Group III purchased a portion of the partnership interest of three existing LSV employees for $77,700, of which $69,930 was financed through two syndicated term loan facilities contained in a credit agreement with The PrivateBank and Trust Company. The Company provided an unsecured guaranty for $45,000 of the obligations of LSV Employee Group III to the lenders through a guaranty agreement. The lenders have the right to seek payment from the Company in the event of a default by LSV Employee Group III. LSV agreed to provide an unsecured guaranty for $24,930 of the obligations of LSV Employee Group III to the lenders through a separate guaranty agreement.

The Company’s direct interest in LSV was unchanged as a result of this transaction. The Company has determined that LSV Employee Group III is a VIE; however, the Company is not considered the primary beneficiary because it does not have the power to direct the activities that most significantly impact the economic performance of LSV Employee Group III either directly or through any financial responsibility from the guaranty.

In September 2014, LSV Employee Group III made the final principal payment related to the term loan guaranteed by LSV. As of April 19, 2016, the remaining unpaid principal balance of the term loan guaranteed by the Company was $16,915. LSV Employee Group III has met all financial obligations to date regarding the scheduled repayment of the term loans since origination. The Company, in its capacity as guarantor, currently has no obligation of payment relating to the term loan of LSV Employee Group III and, furthermore, fully expects that LSV Employee Group III will meet all of their future obligations regarding the term loan.

Note 3. Variable Interest Entities – Investment Products

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 adopted the amendments contained in ASU No. 2015-02, Consolidation (Topic 810) - Amendments to the Consolidation Analysis (ASU 2015-02) during the first quarter 2016. ASU 2015-02 amends the current guidance for both the VIE and the voting interest entity (VOE) consolidation models. This guidance rescinds the indefinite deferral of the VIE guidance for investment companies that permitted application of the risks and rewards based approach.

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 entities either do not meet the definition of a VIE or the Company does not hold a variable interest in the entities. The entities either qualify for the money market scope exception, or are entities in which the Company’s asset management, distribution, administration and custodial fees are commensurate with the services provided and include fair terms and conditions, or are entities that are limited partnerships which have substantive kick-out rights. The Company acts as a fiduciary and does not hold any other interests other than insignificant seed money investments in the pooled investment vehicles. For this reason, the Company also concluded that it is not required to consolidate the pooled investment vehicles under the VOE 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 $12,477 and $10,719 in fees during the three months ended March 31, 2016 and 2015, respectively.

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Note 4.	Composition of Certain Financial Statement Captions

Receivables

Receivables on the accompanying Consolidated Balance Sheets consist of:



	March 31, 2016			December 31, 2015
Trade receivables	$	58,817		$	47,179
Fees earned, not billed	162,493			154,919
Other receivables	8,948			21,574
	230,258			223,672
Less: Allowance for doubtful accounts	(700		)	(649		)
	$	229,558		$	223,023

Fees earned, not billed represents receivables 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 a prolonged valuation process which delays billings to clients.

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, 2016			December 31, 2015
Buildings	$	151,623		$	151,604
Equipment	89,605			86,941
Land	10,030			10,003
Purchased software	122,561			122,433
Furniture and fixtures	17,248			16,143
Leasehold improvements	15,756			15,393
Construction in progress	989			961
	407,812			403,478
Less: Accumulated depreciation	(266,022		)	(259,501		)
Property and Equipment, net	$	141,790		$	143,977

The Company recognized $6,447 and $5,995 in depreciation expense related to property and equipment for the three months ended March 31, 2016 and 2015, respectively.

Accrued Liabilities

Accrued liabilities on the accompanying Consolidated Balance Sheets consist of:



	March 31, 2016		December 31, 2015
Accrued employee compensation	$	24,863	$	74,687
Accrued consulting, outsourcing and professional fees	25,999		21,575
Accrued sub-advisory, distribution and other asset management fees	32,837		32,674
Accrued dividend payable	—		42,625
Accrued income taxes	38,492		3,505
Other accrued liabilities	42,814		42,521
Total accrued liabilities	$	165,005	$	217,587

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Note 5. Fair Value Measurements

The fair value of the Company’s financial assets and liabilities, except for the Company's investment funds sponsored by LSV, is determined in accordance with the fair value hierarchy. The fair value of the Company’s Level 1 financial assets consist mainly of investments in open-ended mutual funds 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), Federal Home Loan Bank (FHLB) and other U.S. government agency short-term notes and investment grade commercial paper 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 2020 to 2041.

The Company has retrospectively adopted ASU No. 2015-07, Fair Value Measurement (Topic 820) - Disclosures for Investments in Certain Entities That Calculate Net Asset Value per Share (ASU 2015-07) during the first quarter 2016 for all periods presented. The fair value of the Company's investment 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 funds allow for investor redemptions at the end of each calendar month. In accordance with ASU 2015-07, this investment has not been classified in the fair value hierarchy.

The valuation of the Company's Level 2 financial assets held by SIDCO and SPTC are based upon securities pricing policies and procedures utilized by third-party pricing vendors.

The pricing policies and procedures applied during the three months ended March 31, 2016 were consistent with those as described in our Annual Report on Form 10-K at December 31, 2015. The Company had no Level 3 financial assets or liabilities at March 31, 2016 or December 31, 2015. There were no transfers of financial assets between levels within the fair value hierarchy during the three months ended March 31, 2016.

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



			Fair Value Measurements at the End of the Reporting Period Using
Assets	March 31, 2016		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)
Equity available-for-sale securities	$	10,560	$	10,560	$	—
Fixed income available-for-sale securities	67,796		—		67,796
Fixed income securities owned	21,264		—		21,264
Investment funds sponsored by LSV (1)	4,183
	$	103,803	$	10,560	$	89,060



			Fair Value Measurements at the End of the Reporting Period Using
Assets	December 31, 2015		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)
Equity available-for-sale securities	$	10,657	$	10,657	$	—
Fixed income available-for-sale securities	70,637		—		70,637
Fixed income securities owned	21,235		—		21,235
Investment funds sponsored by LSV (1)	4,039
	$	106,568	$	10,657	$	91,872

(1) The fair value amount presented in this table is intended to permit reconciliation of the fair value hierarchy to the amounts presented on the accompanying Consolidated Balance Sheets.

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Note 6. Marketable Securities

Investments Available for Sale

Investments available for sale classified as non-current assets consist of:



	At March 31, 2016
	Cost Amount		Gross Unrealized Gains		Gross Unrealized (Losses)			Fair Value
SEI-sponsored mutual funds	$	8,351	$	17	$	(702	)	$	7,666
Equities and other mutual funds	2,755		139		—			2,894
Debt securities	66,784		1,012		—			67,796
	$	77,890	$	1,168	$	(702	)	$	78,356



	At December 31, 2015
	Cost Amount		Gross Unrealized Gains		Gross Unrealized (Losses)			Fair Value
SEI-sponsored mutual funds	$	8,474	$	—	$	(742	)	$	7,732
Equities and other mutual funds	2,857		68		—			2,925
Debt securities	70,308		329		—			70,637
	$	81,639	$	397	$	(742	)	$	81,294

Net unrealized gains (losses) at March 31, 2016 and December 31, 2015 were $215 (net of income tax expense of $251) and $(302) (net of income tax benefit of $43), respectively. These net unrealized gains and losses are reported as a separate component of Accumulated other comprehensive loss on the accompanying Consolidated Balance Sheets.

There were gross realized gains of $13 and gross realized losses of $303 from available-for-sale securities during the three months ended March 31, 2016. There were gross realized gains of $288 and gross realized losses of $142 from available-for-sale securities during the three months ended March 31, 2015. Gains and losses from available-for-sale securities, including amounts reclassified from accumulated comprehensive income, are reflected in Net (loss) gain from investments on the accompanying Consolidated Statements of Operations.

Investments in Affiliated Funds

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

The investment primarily consist of U.S. dollar denominated funds that invest primarily in securities of Canadian, Australian and Japanese companies as well as various other global securities. The underlying securities held by the funds are translated into U.S. dollars within the funds. The funds had a fair value of $4,183 and $4,039 at March 31, 2016 and December 31, 2015, respectively. The Company recognized gross realized gains of $144 and gross realized losses of $69, during the three months ended March 31, 2016 and 2015, 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 and commercial paper 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 $21,264 and $21,235 at March 31, 2016 and December 31, 2015, respectively. There were no material net gains or losses from the change in fair value of the securities during the three months ended March 31, 2016 and 2015.

Note 7. Line of Credit

The Company has a five-year $300,000 Credit Agreement (the Credit Facility) with Wells Fargo Bank, National Association, and a syndicate of other lenders. The Credit Facility is scheduled to expire in February 2017, 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 1.25 percent above LIBOR. There is also a commitment fee equal to 0.15 percent per annum on the daily unused portion of the facility. The aggregate amount of the Credit Facility may be increased by an additional $100,000 under certain conditions set forth in the agreement. The Credit Facility contains covenants that restrict the ability of the Company to

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engage in mergers, consolidations, asset sales, investments, transactions with affiliates, or to incur liens, 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. None of the covenants of the Credit Facility negatively affect the Company’s liquidity or capital resources. Both the interest rate and commitment fee prices may increase if the Company’s leverage ratio reaches certain levels. 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 had no borrowings under the Credit Facility at March 31, 2016. The Company was in compliance with all covenants of the Credit Facility during the three months ended March 31, 2016.

Note 8. Shareholders’ Equity

Stock-Based Compensation

The Company has only non-qualified stock options outstanding under its equity compensation plans. All outstanding stock options have performance-based vesting provisions specific to each option grant that tie the vesting of the applicable stock options to the Company’s financial performance. The Company’s stock options vest at a rate of 50 percent when specified diluted earnings per share targets are achieved, and the remaining 50 percent when secondary, higher specified diluted earnings per share targets are achieved. Options do not vest due to the passage of time but solely as a result of achievement of the financial vesting targets. The amount of stock-based compensation expense is based upon management’s estimate of when the earnings per share targets may be achieved.

The Company recognized stock-based compensation expense in its Consolidated Financial Statements in the three months ended March 31, 2016 and 2015, respectively, as follows:



	Three Months Ended March 31,
	2016			2015
Stock-based compensation expense	$	3,789		$	3,750
Less: Deferred tax benefit	(1,299		)	(1,308		)
Stock-based compensation expense, net of tax	$	2,490		$	2,442

As of March 31, 2016, there was approximately $53,221 of unrecognized compensation cost remaining, adjusted for estimated forfeitures, related to unvested employee stock options 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, 2016 was $3,679. The total options exercisable as of March 31, 2016 had an intrinsic value of $174,765. 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, 2016 and the weighted average exercise price of the shares. The market value of the Company’s common stock as of March 31, 2016 was $43.05 as reported by the Nasdaq Stock Market, LLC. The weighted average exercise price of the options exercisable as of March 31, 2016 was $21.97. Total options that were outstanding and exercisable as of March 31, 2016 were 18,797,000 and 8,291,000, respectively.

Common Stock Buyback

The Company’s Board of Directors, under multiple authorizations, has authorized the repurchase of the Company’s common stock on the open market or through private transactions. The Company purchased 2,073,000 shares at a total cost of $80,586 during the three months ended March 31, 2016. The cost of stock purchases during the period includes the cost of certain transactions that settled in the following quarter. As of March 31, 2016, the Company had approximately $32,540 of authorization remaining for the purchase of common stock under the program. On April 19, 2016, the Company’s Board of Directors approved an increase in the stock repurchase program by an additional $200,000, increasing the available authorization to approximately $232,540.

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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Note 9. 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, 2016	$	(24,988	)	$	(302	)	$	(25,290	)

Other comprehensive gain before reclassifications	2,429			330			2,759
Amounts reclassified from accumulated other comprehensive income	—			187			187
Net current-period other comprehensive gain	2,429			517			2,946

Balance, March 31, 2016	$	(22,559	)	$	215		$	(22,344	)

Note 10. Business Segment Information

The Company’s reportable business segments are:

Private Banks – provides investment processing and investment management programs to banks and trust institutions, independent wealth advisers and financial advisors worldwide;

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

Institutional Investors – provides investment management programs and administrative outsourcing solutions to retirement plan sponsors, hospitals and not-for-profit organizations worldwide;

Investment Managers – provides investment operations outsourcing solutions to fund companies, banking institutions and both traditional and non-traditional investment managers worldwide; and

Investments in New Businesses – focuses on providing investment management programs to ultra-high-net-worth families residing in the United States; developing internet-based investment services and advice solutions; entering new markets; and conducting other research and development activities.

The information in the following tables is derived from the Company’s internal financial reporting used for corporate management purposes. There are no inter-segment revenues for the three months ended March 31, 2016 and 2015. Management evaluates Company assets on a consolidated basis during interim periods. 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, 2015.

The following tables highlight certain financial information about each of the Company’s business segments for the three months ended March 31, 2016 and 2015.



	Private Banks		Investment Advisors		Institutional Investors		Investment Managers		Investments In New Businesses			Total
	For the Three Months Ended March 31, 2016
Revenues	$	113,361	$	76,679	$	72,897	$	69,918	$	1,408		$	334,263
Expenses	103,741		44,774		35,382		45,275		5,232			234,404
Operating profit (loss)	$	9,620	$	31,905	$	37,515	$	24,643	$	(3,824	)	$	99,859
Gain on sale of subsidiary	2,791		—		—		—		—			2,791
Segment profit (loss)	$	12,411	$	31,905	$	37,515	$	24,643	$	(3,824	)	$	102,650

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	Private Banks		Investment Advisors		Institutional Investors		Investment Managers		Investments In New Businesses			Total
	For the Three Months Ended March 31, 2015
Revenues	$	111,213	$	74,015	$	73,548	$	65,367	$	1,301		$	325,444
Expenses	99,256		39,059		35,211		40,623		4,866			219,015
Operating profit (loss)	$	11,957	$	34,956	$	38,337	$	24,744	$	(3,565	)	$	106,429
Gain on sale of subsidiary	2,791		—		—		—		—			2,791
Segment profit (loss)	$	14,748	$	34,956	$	38,337	$	24,744	$	(3,565	)	$	109,220

A reconciliation of the total operating profit reported for the business segments to income from operations in the Consolidated Statements of Operations for the three months ended March 31, 2016 and 2015 is as follows:



	2016			2015
Total operating profit from segments	$	99,859		$	106,429
Corporate overhead expenses	(13,047		)	(13,359		)
Income from operations	$	86,812		$	93,070

The following tables provide additional information for the three months ended March 31, 2016 and 2015 pertaining to our business segments:



	Capital Expenditures (1)				Depreciation
	2016		2015		2016		2015
Private Banks	$	8,712	$	8,502	$	3,181	$	3,097
Investment Advisors	2,852		3,318		976		838
Institutional Investors	796		947		334		303
Investment Managers	1,322		2,048		1,190		999
Investments in New Businesses	94		151		548		563
Total from business segments	$	13,776	$	14,966	$	6,229	$	5,800
Corporate overhead	310		409		218		195
	$	14,086	$	15,375	$	6,447	$	5,995

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



	Amortization
	2016		2015
Private Banks	$	7,711	$	7,251
Investment Advisors	2,553		2,400
Institutional Investors	399		375
Investment Managers	266		250
Investments in New Businesses	26		25
Total from business segments	$	10,955	$	10,301
Corporate overhead	57		57
	$	11,012	$	10,358

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Note 11. Income Taxes

The gross liability for unrecognized tax benefits at March 31, 2016 and December 31, 2015 was $14,990 and $14,517, respectively, exclusive of interest and penalties, of which $13,372 and $12,898 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, 2016 and December 31, 2015, the combined amount of accrued interest and penalties related to tax positions taken on tax returns was $1,497 and $1,391, respectively.



	March 31, 2016		December 31, 2015
Gross liability for unrecognized tax benefits, exclusive of interest and penalties	$	14,990	$	14,517
Interest and penalties on unrecognized benefits	1,497		1,391
Total gross uncertain tax positions	$	16,487	$	15,908
Amount included in Current liabilities	$	4,811	$	4,511
Amount included in Other long-term liabilities	11,676		11,397
	$	16,487	$	15,908

The Company’s effective tax rate was 35.2 percent and 35.4 percent for the three months ended March 31, 2016 and 2015, respectively. The decrease in the tax rate for the three months ended March 31, 2016 was primarily due to the permanent reinstatement of the Research and Development Tax Credit enacted during the fourth quarter 2015. The credit was included in the Company's tax rate in the three months ended March 31, 2016 but was not included in the three months ended March 31, 2015 due to its expired status. The decrease in the Company's tax rate was partially offset by the loss of foreign tax credits.

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 2012 and is no longer subject to state, local or foreign income tax examinations by authorities for years before 2008.

The Company estimates it will recognize $4,811 of gross unrecognized tax benefits which is expected to be paid within one year due to 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 12. Commitments and Contingencies

In the normal course of business, the Company is party to various claims and legal proceedings.

SEI has been named in six lawsuits filed in Louisiana. Five lawsuits were filed in the 19th Judicial District Court for the Parish of East Baton Rouge. One of the five actions purports to set forth claims on behalf of a class and also names SPTC as a defendant. Two of the other actions also name SPTC as a defendant. All five actions name various defendants in addition to SEI, and, in all five actions, the plaintiffs purport to bring a cause of action against SEI and/or SPTC under the Louisiana Securities Act. Two of the five actions include claims for violations of the Louisiana Racketeering Act and possibly conspiracy. In addition, another group of plaintiffs filed a lawsuit in the 23rd Judicial District Court for the Parish of Ascension against SEI and SPTC and other defendants, asserting claims of negligence, breach of contract, breach of fiduciary duty, violations of the uniform fiduciaries law, negligent misrepresentation, detrimental reliance, violations of the Louisiana Securities Act and Louisiana Racketeering Act, and conspiracy. The underlying allegations in all actions relate to the purported role of SPTC in providing back-office services to Stanford Trust Company. The petitions allege that SEI and SPTC aided and abetted or otherwise participated in the sale of “certificates of deposit” issued by Stanford International Bank.

The case filed in Ascension Parish was removed to federal court and transferred by the Judicial Panel on Multidistrict Litigation to the United States District Court for the Northern District of Texas. The schedule for responding to that petition has not yet been established.

The plaintiffs in two of the cases filed in East Baton Rouge have granted SEI and SPTC an indefinite extension to respond to the petitions.

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In a third East Baton Rouge action, brought as a class action, SEI and SPTC filed exceptions, which the Court granted in part, dismissing the claims under the Louisiana Unfair Trade Practices Act. Plaintiffs then filed a motion for class certification, and SEI and SPTC also filed a motion for summary judgment. The Court deferred the motion for summary judgment, stating that the motion would not be set for hearing until after the hearing on class certification. After the Court held a hearing on class certification, it certified a class composed of persons who purchased or renewed any Stanford International Bank certificates of deposit (SIB CDs) in Louisiana between January 1, 2007 and February 13, 2009 or any person for whom the Stanford Trust Company purchased SIB CDs in Louisiana between January 1, 2007 and February 13, 2009. SEI and SPTC filed motions for appeal from the class certification judgments. On February 1, 2013, plaintiffs filed a motion for Leave to File a First Amended and Restated Class Action Petition in which they asked the Court to allow them to amend the petition and add claims against certain of SEI's insurance carriers. On February 5, 2013, the Court granted two of the motions for appeal and the motion for leave to amend. On February 28, 2013, SEI responded to the First Amended and Restated Class Action Petition by seeking dismissal of the action. On March 11, 2013, the newly-added insurance carrier defendants removed the case to the Middle District of Louisiana. SEI notified the Judicial Panel on Multidistrict Litigation (MDL) of this case as a potential tag-along action. Plaintiffs filed a motion to remand the action to state court. On March 25, 2013, SEI filed a motion requesting that the federal court decline to adopt the state court's order regarding class certification, which the court dismissed without prejudice to renew upon a determination of the jurisdictional issue. On August 7, 2013, the MDL Panel transferred the matter against SEI to the Northern District of Texas. On October 1, 2014, SEI filed a renewed motion to dismiss in the Northern District of Texas, and on October 6, 2014, the District Court denied plaintiffs’ motion to remand. On June 17, 2015, the Court denied the motion to dismiss, and on June 24, 2015 set a briefing schedule for SEI and SPTC’s motion challenging the Louisiana court’s decision to certify a class, which motion was filed on July 15, 2015. SEI and SPTC filed their answer on July 1, 2015, and this case is now pending in the Northern District of Texas. On July 15, 2015, SEI and SPTC also filed motions seeking reconsideration of the District Court’s June 17 denial of the motion to dismiss or, in the alternative, seeking leave to pursue an interlocutory appeal of certain elements of the denial, as well as a motion seeking partial judgment on the pleadings pursuant to Federal Rule of Civil Procedure 12(c) with respect to claims brought under Section 712(D) of the Louisiana Securities Law. On September 22, 2015, the District Court granted SEI and SPTC’s motion for reconsideration of the June 17 denial of the motion to dismiss and dismissed plaintiffs’ claims under Section 714(A) of the Louisiana Securities Law, but declined to dismiss, or certify for interlocutory appeal, plaintiffs’ claims under Section 714(B) of the Louisiana Securities Law. On November 4, 2015, the District Court granted SEI and SPTC's motion to dismiss plaintiffs' claims under Section 712(D) of the Louisiana Securities Law. Consequently, the only claims of plaintiffs still pending before the District Court are plaintiffs' claims for secondary liability against SEI and SPTC under Section 714(B) of the Louisiana Securities Law.

In the two other cases filed in East Baton Rouge, brought by the same counsel who filed the class action, virtually all of the litigation to date has involved motions practice and appellate litigation regarding the existence of federal subjection matter jurisdiction under the federal Securities Litigation Uniform Standards Act (SLUSA). After the matter was removed to the United States District Court for the Northern District of Texas, that court dismissed the action under SLUSA. The Court of Appeals for the Fifth Circuit reversed that order, and the Supreme Court of the United States affirmed the Court of Appeals judgment on February 26, 2014. The matter was remanded to state court and no material activity has taken place since that date.

While the outcome of this litigation is uncertain given its early phase, SEI and SPTC believe that they have valid defenses to plaintiffs' claims and intend to defend the lawsuits vigorously. Because of the uncertainty of the make-up of the classes, the specific theories of liability that may survive a motion for summary judgment or other dispositive motion, the lack of discovery regarding damages, causation, mitigation and other aspects that may ultimately bear upon loss, the Company is not reasonably able to provide an estimate of loss, if any, with respect to the foregoing lawsuits.

A lawsuit entitled Steven Curd and Rebel Curd v. SEI Investments Management Corporation was filed against SIMC in the United States District Court for the Eastern District of Pennsylvania on December 11, 2013. On August 28, 2014, the Court granted SIMC’s motion to dismiss the initial complaint in the lawsuit, but also granted plaintiffs leave to amend the complaint.

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allegedly excessive fees paid beginning from the one year period prior to the filing of the lawsuit, plus interest, costs, and fees. On November 24, 2014, SIMC and SGFS filed a motion to dismiss the amended complaint. On July 13, 2015, the Court denied the motion to dismiss with respect to SIMC, and granted the motion to dismiss with respect to SGFS. On September 18, 2015, plaintiffs filed a second amended complaint reinstating SGFS as a defendant in the case. The parties are currently engaged in discovery, which is expected to be completed in early 2017. While the outcome of this litigation is uncertain given its early phase, SIMC and SGFS believe that they have valid defenses to plaintiffs' claims and intend to defend the lawsuit vigorously, and SIMC and SGFS are not reasonably able to provide an estimate of the ultimate loss, if any, with respect to this lawsuit.

On November 26, 2014, a Writ of Summons was issued to two of our subsidiaries, SEI Investments - Global Fund Services Limited (GFSL) and SEI Investments - Trustee & Custodial Services (Ireland) Limited (T&C), to appear before the Court of First Instance Antwerp, Belgium. The plaintiffs in this case allege that through their initial investments in collective investment funds domiciled in Netherlands and subsequent transfer of claim rights to a Belgium domiciled partnership, they are beneficial owners of a portfolio of life settlement policies (the Portfolio) which lapsed due to a failure to make premium payments. The plaintiffs seek to recover jointly and severally from nine defendants including GFSL and T&C, damages of approximately $84 million. GFSL and T&C’s involvement in the litigation appears to arise out of their historical provision of administration and custody services, respectively, to the Strategic Life Settlement Fund PLC, who, together with its managers, appear to be the principal defendants in this claim. On December 4, 2015, the Belgium Court dismissed plaintiff's claims for a lack of jurisdiction. On December 22, 2015, the plaintiffs appealed the dismissal.

While the outcome of this action is uncertain given its early phase and the lack of specific theories of liability asserted against GFSL and T&C, each of GFSL and T&C believe that they have valid defenses to plaintiffs’ claims and intend to defend the lawsuit vigorously, and GFSL and T&C are not reasonably able to provide an estimate of the ultimate loss, if any, with respect to this lawsuit.

Note 13. Sale of SEI Asset Korea

On July 31, 2012, the Company, MetLife International Holdings, Inc. (MetLife) and International Finance Corporation (IFC) entered into a definitive agreement with Baring Asset Management Limited (Barings) to sell all ownership interest in SEI Asset Korea (SEI AK). SEI AK was located in South Korea and provided domestic equity and fixed income investment management services to financial institutions and pension funds.

On March 28, 2013, all conditions subject to closing the transaction were satisfied and all ownership interests in SEI AK were transferred to Barings. Under the terms of the agreement, a portion of the purchase price was paid upon closing with up to an additional $11,220 payable to the Company as a contingent purchase price with respect to three one-year periods ending on December 31, 2013, 2014, and 2015 depending upon whether SEI AK achieves specified revenue measures during such periods. The Company recognized pre-tax gains of $2,791, or $0.01 diluted earnings per share, during the three months ended March 31, 2016 and 2015 representing the final annual payments under the terms of the agreement. The Company's gains from the sale of SEI AK are included in Gain on sale of subsidiary on the accompanying Consolidated Statement of Operations.

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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 at March 31, 2016 and 2015, the consolidated results of operations for the three months ended March 31, 2016 and 2015 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, 2015.

Overview

Consolidated Summary

We are a leading global provider of investment processing, investment management and investment operations solutions. We help corporations, financial institutions, financial advisors and ultra-high-net-worth families create and manage wealth by providing comprehensive, innovative, investment and investment-business solutions. Investment processing fees are earned as monthly fees for contracted services, including computer processing services, software licenses and investment operations services, as well as transaction-based fees for providing securities valuation and trade-execution. Investment operations and investment management fees are earned as a percentage of average assets under management or administration. As of March 31, 2016, through our subsidiaries and partnerships in which we have a significant interest, we manage or administer $683.6 billion in mutual fund and pooled or separately managed assets, including $264.7 billion in assets under management and $418.9 billion in client assets under administration. Our affiliate, LSV Asset Management (LSV), manages $78.4 billion of assets which are included as assets under management.

Our Condensed Consolidated Statements of Operations for the three months ended March 31, 2016 and 2015 were:



	Three Months Ended March 31,					Percent Change
	2016			2015		Percent Change
Revenues	$	334,263		$	325,444	3	%
Expenses	247,451			232,374		6	%
Income from operations	86,812			93,070		(7	)%
Net (loss) gain from investments	(126		)	250		NM
Interest income, net of interest expense	969			856		13	%
Equity in earnings from unconsolidated affiliates	29,192			34,033		(14	)%
Gain on sale of subsidiary	2,791			2,791		—	%
Income before income taxes	119,638			131,000		(9	)%
Income taxes	42,141			46,389		(9	)%
Net income	77,497			84,611		(8	)%
Diluted earnings per common share	$	0.47		$	0.50	(6	)%

The following items had a significant impact on our financial results for the three months ended March 31, 2016 and 2015:

•

Revenue growth was primarily driven by higher Asset management, administration and distribution fees from improved cash flows from new and existing clients. The declining capital markets during the second half of 2015 and early first quarter 2016 negatively impacted our asset-based fee revenues and partially offset our revenue growth. Despite the volatile market conditions, our average assets under management, excluding LSV, increased $8.2 billion, or five percent, to $180.7 billion in the first three months of 2016 as compared to $172.5 billion during the first three months of 2015. Our average assets under administration increased $20.0 billion, or five percent, to $404.7 billion in the first three months of 2016 as compared to $384.7 billion during the first three months of 2015.


•	Information processing and software servicing fees in our Private Banks segment increased $2.7 million in the first three months of 2016 compared to the prior year period primarily due to increased assets from new and existing clients processed on the SEI Wealth Platform.


•	Our proportionate share in the earnings of LSV decreased to $29.2 million in the first three months of 2016 as compared to $34.3 million in the first three months of 2015 primarily due to the decrease in assets under management from LSV's existing clients from unfavorable market conditions and a reduction in performance fees.


•	We capitalized $7.6 million in the first three months of 2016 for the SEI Wealth Platform as compared to $7.3 million in the first three months of 2015. Amortization expense related to the Platform increased to $11.0 million during the first three months of 2016 as compared to $10.3 million during the first three months of 2015 due to continued enhancements to the Platform.

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•	As we continue the development of new elements of the Platform, our expenses related to maintenance and enhancements have increased. A higher portion of these costs are recognized in personnel and consulting costs and are not capitalized. These increased costs primarily impacted the Private Banks and Investment Advisors business segments.


•	We also capitalized $1.8 million in the first three months of 2016 for new technological capabilities being developed for the Investment Managers segment. This new offering includes components that leverage upon the current infrastructure and add significant enhancements designed to aggregate, transact and process data.

•

Our operating expenses, primarily personnel costs, in our Investment Advisors and Investment Managers segments increased. These increased operational costs are mainly related to servicing new and existing clients. Additionally, sales compensation expense in our Private Banks and Investment Managers segments increased due to new business activity. These increased operational costs are included in Compensation, benefits and other personnel costs on the accompanying Consolidated Statements of Operations.


•	We recorded our final pre-tax gains of $2.8 million, or $.01 diluted earnings per share, from the sale of SEI Asset Korea (SEI AK) in the first three months of 2016 and 2015. The gains from the sale are included in Gain on sale of subsidiary on the accompanying Consolidated Statement of Operations (See Note 13 to the Consolidated Financial Statements for more information).


•	Our effective tax rate was 35.2 percent during the first three months of 2016 as compared to 35.4 percent during the first three months of 2015.


•	We continued our stock repurchase program during 2016 and purchased 2.1 million shares for $80.6 million in the three month period.

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Ending Asset Balances

(In millions)

This table presents ending assets of our clients, or of our clients’ customers, for which we provide management or administrative services through our subsidiaries and partnerships in which we have a significant interest.



	As of March 31,				Percent Change
	2016		2015		Percent Change
Private Banks:
Equity and fixed income programs	$	18,370	$	19,296	(5	)%
Collective trust fund programs	4		9		(56	)%
Liquidity funds	5,521		5,551		(1	)%
Total assets under management	$	23,895	$	24,856	(4	)%
Client proprietary assets under administration	18,324		17,643		4	%
Total assets	$	42,219	$	42,499	(1	)%
Investment Advisors:
Equity and fixed income programs	47,357		45,800		3	%
Collective trust fund programs	7		8		(13	)%
Liquidity funds	5,051		3,047		66	%
Total assets under management	$	52,415	$	48,855	7	%
Institutional Investors:
Equity and fixed income programs	73,468		74,178		(1	)%
Collective trust fund programs	97		94		3	%
Liquidity funds	2,390		3,246		(26	)%
Total assets under management	$	75,955	$	77,518	(2	)%
Investment Managers:
Equity and fixed income programs	72		25		NM
Collective trust fund programs	32,385		20,965		54	%
Liquidity funds	733		1,091		(33	)%
Total assets under management	$	33,190	$	22,081	50	%
Client proprietary assets under administration (A)	400,579		372,116		8	%
Total assets	$	433,769	$	394,197	10	%
Investments in New Businesses:
Equity and fixed income programs	803		756		6	%
Liquidity funds	41		106		(61	)%
Total assets under management	$	844	$	862	(2	)%
LSV:
Equity and fixed income programs	$	78,390	$	84,123	(7	)%
Total:
Equity and fixed income programs (B)	218,460		224,178		(3	)%
Collective trust fund programs	32,493		21,076		54	%
Liquidity funds	13,736		13,041		5	%
Total assets under management	$	264,689	$	258,295	2	%
Client proprietary assets under administration (C)	418,903		389,759		7	%
Total assets under management and administration	$	683,592	$	648,054	5	%


(A)	Client assets under administration in the Investment Managers segment include $49.2 billion of assets balances that require limited services and therefore are at fee levels below our normal full service assets (as of March 31, 2016).


(B)	Equity/Fixed Income programs include $4.6 billion of assets invested in various asset allocation funds at March 31, 2016.


(C)	In addition to the numbers presented, SEI also administers an additional $11.2 billion in Funds of Funds assets (as of

March 31, 2016) on which SEI does not earn an administration fee.

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Average Asset Balances

(In millions)

This table presents average asset balances of our clients, or of clients’ customers, for which we provide management or administrative services through our subsidiaries and partnerships in which we have a significant interest.



	Three Months Ended March 31,				Percent Change
	2016		2015		Percent Change
Private Banks:
Equity and fixed income programs	$	17,644	$	18,869	(6	)%
Collective trust fund programs	3		8		(63	)%
Liquidity funds	5,661		5,755		(2	)%
Total assets under management	$	23,308	$	24,632	(5	)%
Client proprietary assets under administration	17,248		17,504		(1	)%
Total assets	$	40,556	$	42,136	(4	)%
Investment Advisors:
Equity and fixed income programs	45,175		44,809		1	%
Collective trust fund programs	7		9		(22	)%
Liquidity funds	5,009		3,072		63	%
Total assets under management	$	50,191	$	47,890	5	%
Institutional Investors:
Equity and fixed income programs	71,779		73,760		(3	)%
Collective trust fund programs	98		95		3	%
Liquidity funds	2,834		3,021		(6	)%
Total assets under management	$	74,711	$	76,876	(3	)%
Investment Managers:
Equity and fixed income programs	66		27		NM
Collective trust fund programs	30,784		21,108		46	%
Liquidity funds	832		1,066		(22	)%
Total assets under management	$	31,682	$	22,201	43	%
Client proprietary assets under administration	387,421		367,206		6	%
Total assets	$	419,103	$	389,407	8	%
Investments in New Businesses:
Equity and fixed income programs	757		755		—	%
Liquidity funds	48		101		(52	)%
Total assets under management	$	805	$	856	(6	)%
LSV:
Equity and fixed income programs	$	74,699	$	83,439	(10	)%
Total:
Equity and fixed income programs	210,120		221,659		(5	)%
Collective trust fund programs	30,892		21,220		46	%
Liquidity funds	14,384		13,015		11	%
Total assets under management	$	255,396	$	255,894	—	%
Client proprietary assets under administration	404,669		384,710		5	%
Total assets under management and administration	$	660,065	$	640,604	3	%

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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. Assets under management and administration also include total assets of our clients or their customers for which we provide administrative services, including client proprietary fund balances for which we provide administration and/or distribution services. The assets presented in the preceding tables do not include assets processed on the SEI Wealth Platform and are not included in the accompanying Consolidated Balance Sheets because we do not own them.

Business Segments

Revenues, Expenses and Operating Profit (Loss) for our business segments for the three months ended March 31, 2016 compared to the three months ended March 31, 2015 were as follows:



	Three Months Ended March 31,						Percent Change
	2016			2015			Percent Change
Private Banks:
Revenues	$	113,361		$	111,213		2	%
Expenses	103,741			99,256			5	%
Operating Profit	$	9,620		$	11,957		(20	)%
Gain on sale of subsidiary	2,791			2,791			NM
Segment Profit	$	12,411		$	14,748		NM
Operating Margin (A)	8		%	11		%
Investment Advisors:
Revenues	$	76,679		$	74,015		4	%
Expenses	44,774			39,059			15	%
Operating Profit	$	31,905		$	34,956		(9	)%
Operating Margin	42		%	47		%
Institutional Investors:
Revenues	$	72,897		$	73,548		(1	)%
Expenses	35,382			35,211			—	%
Operating Profit	$	37,515		$	38,337		(2	)%
Operating Margin	51		%	52		%
Investment Managers:
Revenues	$	69,918		$	65,367		7	%
Expenses	45,275			40,623			11	%
Operating Profit	$	24,643		$	24,744		—	%
Operating Margin	35		%	38		%
Investments in New Businesses:
Revenues	$	1,408		$	1,301		8	%
Expenses	5,232			4,866			8	%
Operating Loss	$	(3,824	)	$	(3,565	)	NM

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

For additional information pertaining to our business segments, see Note 10 to the Consolidated Financial Statements.

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Private Banks



	Three Months Ended March 31,				Percent Change
	2016		2015		Percent Change
Revenues:
Information processing and software servicing fees	$	72,923	$	70,218	4	%
Asset management, administration & distribution fees	32,202		33,839		(5	)%
Transaction-based and trade execution fees	8,236		7,156		15	%
Total revenues	$	113,361	$	111,213	2	%

Revenues increased $2.1 million, or two percent, in the three month period ended March 31, 2016 and were primarily affected by:


•	Increased recurring investment processing fees from the growth in new and existing client assets processed on the SEI Wealth Platform;


•	Increased trade execution fees primarily due to higher trading volumes; and


•	Increased fees from liquidity products due to higher yields; partially offset by


•	Decreased investment management fees from existing international clients due to lower average assets under management from unfavorable market conditions;


•	Lower recurring investment processing fees earned on our mutual fund trading solution due to price reductions; and


•	The negative impact from foreign currency exchange rate fluctuations.

Operating margins decreased to 8 percent compared to 11 percent in the same period a year ago. Operating income decreased by $2.3 million, or 20 percent, compared to the prior year corresponding period and was primarily affected by:


•	Increased non-capitalized costs, mainly personnel and consulting costs, related to maintenance and enhancements to the SEI Wealth Platform;


•	Increased amortization expense related to the SEI Wealth Platform;


•	Increased direct expenses associated with the increased trade execution fees; and

•Increased sales compensation expense due to new business activity; partially offset by


•	An increase in revenues; and


•	Decreased direct expenses associated with decreased investment management fees from existing international clients.

Investment Advisors



	Three Months Ended March 31,				Percent Change
	2016		2015		Percent Change
Revenues:
Investment management fees-SEI fund programs	$	58,744	$	57,847	2	%
Separately managed account fees	14,446		12,742		13	%
Other fees	3,489		3,426		2	%
Total revenues (a)	$	76,679	$	74,015	4	%

(a) All amounts are reflected in Asset management, administration and distribution fees except for $354 and $212 in the three months ended March 31, 2016 and 2015, respectively, which are reflected in Transaction-based and trade execution fees.

Revenues increased $2.7 million, or four percent, in the three month period ended March 31, 2016 and were primarily affected by:


•	Increased investment management fees and separately managed account program fees due to an increase in net cash flows from new and existing advisors; and


•	Increased fees from liquidity products due to higher yields; partially offset by


•	A decrease in the average basis points earned on assets due to client-directed shifts into lower fee investment products.

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Operating margin decreased to 42 percent compared to 47 percent in the same period a year ago. Operating income decreased by $3.1 million, or nine percent, compared to the prior year corresponding period and was primarily affected by:


•	Increased direct expenses associated with the increased assets in our investment management programs;


•	Increased personnel costs for marketing to and servicing new advisors;


•	Increased non-capitalized costs, mainly personnel and consulting costs, related to maintenance and enhancements to the SEI Wealth Platform; and


•	Increased amortization expense related to the SEI Wealth Platform; partially offset by


•	An increase in revenues.

Institutional Investors

Revenues decreased slightly in the three month period ended March 31, 2016 and were primarily affected by:


•	Decreased investment management fees from existing clients due to lower average assets under management caused by unfavorable market conditions; and


•	Client losses and the negative impact from foreign currency exchange rate fluctuations; partially offset by


•	Asset funding from new sales of our retirement and not-for-profit solutions.

Operating margins decreased to 51 percent compared to 52 percent in the same period a year ago. Operating income decreased slightly compared to the prior year corresponding period and was primarily affected by:


•	A decrease in revenues; and


•	Increased direct expenses associated with international investment management fees; partially offset by


•	Decreased personnel compensation expenses.

Investment Managers

Revenues increased $4.6 million, or seven percent, in the three month period ended March 31, 2016 and were primarily affected by:


•	Positive cash flows from new clients; and


•	Increased non-recurring professional fees; partially offset by


•	Client losses and fund closures; and


•	Lower valuations from unfavorable market conditions impacting existing client assets in traditional investment products and separately managed accounts.

Operating margin decreased to 35 percent compared to 38 percent in the same period a year ago. Operating income decreased slightly compared to the prior year corresponding period and was primarily affected by:


•	Increased personnel expenses, technology and other operational costs to service new and existing clients; and


•	Increased non-capitalized investment spending, mainly consulting costs; partially offset by


•	An increase in revenues.

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 $13.0 million and $13.4 million in the three months ended March 31, 2016 and 2015, respectively.

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Other income and expense

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



	Three Months Ended March 31,
	2016			2015
Net (loss) gain from investments	$	(126	)	$	250
Interest and dividend income	1,083			969
Interest expense	(114		)	(113		)
Equity in earnings of unconsolidated affiliates	29,192			34,033
Gain on sale of subsidiary	2,791			2,791
Total other income and expense items, net	$	32,826		$	37,930

Equity in earnings of unconsolidated affiliates

Equity in earnings of unconsolidated affiliates primarily includes our less than 50 percent ownership in LSV. At March 31, 2016, our interest in LSV was approximately 39.2 percent. Our proportionate share in the earnings of LSV was $29.2 million in first quarter 2016 as compared to $34.3 million in first quarter 2015, a decrease of 15 percent. The decrease in earnings was primarily due to the decline in assets under management from LSV's existing clients from unfavorable market conditions during early 2016 and a reduction in performance fees earned by LSV. LSV's average assets under management decreased $8.7 billion to $74.7 billion during the three months ended March 31, 2016 as compared to $83.4 billion during the three months ended March 31, 2015, a decline of ten percent.

In April 2016, LSV provided an interest in the partnership to select key employees which reduced the ownership percentage of each existing partner on a pro-rata basis. As a result, our total partnership interest in LSV was reduced to approximately 38.9 percent. As a result, we expect a reduction in our proportionate share in the earnings of LSV beginning in the second quarter 2016.

Gain on sale of subsidiary

We recorded gains of $2.8 million during the three months ended March 31, 2016 and 2015 from the the sale of our ownership interests in SEI AK. These gains are included in Gain on sale of subsidiary on the accompanying Consolidated Statement of Operations (See Note 13 to the Consolidated Financial Statements for more information).

Income Taxes

Our effective tax rate was 35.2 percent and 35.4 percent for the three months ended March 31, 2016 and 2015, respectively.

Fair Value Measurements

The fair value of our financial assets and liabilities, except for the investment funds sponsored by LSV, is determined in accordance with the fair value hierarchy. The fair value of the investment funds sponsored by LSV is measured using the net asset value per share (NAV) as a practical expedient. The fair value of all other financial assets are determined using Level 1 or Level 2 inputs and consist mainly of investments in equity or fixed-income mutual funds that are quoted daily and Government National Mortgage Association (GNMA) and other U.S. government agency securities that are single issuer pools that are valued based on current market data of similar assets. We did not have any financial liabilities at March 31, 2016 or December 31, 2015 (See Note 5 to the Notes to Consolidated Financial Statements).

Regulatory Matters

Like many firms operating within the financial services industry, we are experiencing a difficult 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

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circumstances, the regulatory authorities could require remediation activities or pursue enforcement proceedings against us or our subsidiaries. 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.

Liquidity and Capital Resources



	Three Months Ended March 31,
	2016			2015
Net cash provided by operating activities	$	78,021		$	77,930
Net cash used in investing activities	(7,472		)	(10,320		)
Net cash used in financing activities	(113,949		)	(85,235		)
Effect of exchange rate changes on cash and cash equivalents	1,992			(6,561		)
Net decrease in cash and cash equivalents	(41,408		)	(24,186		)
Cash and cash equivalents, beginning of period	679,661			667,446
Cash and cash equivalents, end of period	$	638,253		$	643,260

Cash requirements and liquidity needs are primarily funded through our cash flow from operations and our capacity for additional borrowing. At March 31, 2016, our unused sources of liquidity consisted of cash and cash equivalents and the amount available under our credit facility.

Our credit facility provides for borrowings of up to $300.0 million and is scheduled to expire in February 2017 (See Note 7 to the Consolidated Financial Statements). 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 mergers, consolidations, asset sales, investments, transactions with affiliates, or to incur liens, 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. We currently have no borrowings under our credit facility.

The majority of our 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 well-established financial institutions located in the United States. 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 19, 2016, the amount of cash and cash equivalents considered free and immediately accessible for other general corporate purposes was $386.6 million.

Our cash and cash equivalents include accounts managed by our 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. Also, some of our foreign subsidiaries may have excess cash reserves which are considered to be undistributed earnings and indefinitely reinvested. Upon distribution of these earnings, in the form of dividends or otherwise, we would be immediately subject to both U.S. and foreign withholding taxes which would reduce the amount we would ultimately realize. In addition to the foreign withholding taxes, the negative impact resulting from unfavorable exchange rate fluctuations on the cash balances held by our foreign subsidiaries would also reduce the amount realized. We do not include accounts of our foreign subsidiaries in our calculation of free and immediately accessible cash for other general corporate purposes.

Cash flows from operations increased slightly in the first three months of 2016 compared to the first three months of 2015. Our cash flows from operations was negatively impacted due to the decrease in our net income and the reduced distribution payment received from LSV. The net change in our working capital accounts favorably impacted our cash flows from operations.

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Cash flows used in investing activities decreased $2.8 million in the first three months of 2016 compared to the first three months of 2015. Net cash used in investing activities includes:

•Purchases, sales and maturities of marketable securities. Our purchases, sales and maturities of marketable securities in the first three months of 2016 and 2015 were as follows:



	Three Months Ended March 31,
	2016			2015
Purchases	$	(8,652	)	$	(4,107	)
Sales and maturities	12,275			7,375
Net investing activities from marketable securities	$	3,623		$	3,268

•

The capitalization of costs incurred in developing computer software. We capitalized $7.6 million of software development costs in the first three months of 2016 as compared to $7.3 million in the first three months of 2015 for significant enhancements for the expanded functionality of the SEI Wealth Platform. Additionally, we also capitalized $1.8 million and $659 thousand of software development costs in the first three months of 2016 and 2015, respectively, for new technological capabilities for the Investment Managers segment.


•	Capital expenditures. Our capital expenditures in the first three months of 2016 were $4.6 million as compared to $7.4 million in the first three months of 2015. Our expenditures in 2016 primarily include purchased software and equipment for our data center operations.

Cash flows used in financing activities increased $28.7 million in the first three months of 2016 compared to the first three months of 2015. Net cash used in financing activities includes:

•

The repurchase of our common stock. Our Board of Directors has authorized the repurchase of our common stock through multiple authorizations. Currently, there is no expiration date for our common stock repurchase program. We had total capital outlays of $78.4 million during the first three months of 2016 and $67.5 million during the first three months of 2015 for the repurchase of our common stock.


•	Proceeds from the issuance of our common stock. We received $6.5 million in proceeds from the issuance of our common stock during the first three months of 2016 as compared to $19.2 million during the first three months of 2015. The decrease in proceeds is primarily attributable to a lower level of stock option exercise activity.


•	Dividend payments. Cash dividends paid were $42.7 million in the first three months of 2016 as compared to $40.2 million in the first three months of 2015.

We believe our operating cash flow, available borrowing capacity, and existing cash and cash equivalents should provide adequate funds for ongoing operations; continued investment in new products and equipment; our common stock repurchase program and future dividend payments.

Off Balance Sheet Arrangement

On October 1, 2012, we provided an unsecured guaranty of the obligations of LSV Employee Group III to The PrivateBank and Trust Company and certain other lenders. We entered into this agreement in order to facilitate the acquisition of certain partnership interests of LSV by LSV Employee Group III. Additional information pertaining to the agreement is presented in Note 2 to the Consolidated Financial Statements.

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:


•	changes in capital markets that may affect our revenues and earnings;


•	product development risk;


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


•	data and cyber security risks;

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•	operational risks associated with the processing of investment transactions;


•	systems and technology risks;


•	poor investment performance of our mutual funds and other investment products;


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


•	third party pricing services for the valuation of securities invested in our investment products;


•	the affect of extensive governmental regulation;


•	litigation and regulatory examinations and investigations;


•	consolidation within our target markets, including consolidations between banks and other financial institutions;


•	third party approval of our investment products with advisors affiliated with independent broker-dealers or other networks;


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


•	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; and


•	retention of executive officers and senior management personnel.

Our principal, regulated wholly-owned subsidiaries are SEI Investments Distribution Co., or SIDCO, SEI Investments Management Corporation, or SIMC, SEI Private Trust Company, or SPTC, SEI Trust Company, or STC, and SEI Investments (Europe) Limited, or SIEL. SIDCO is a broker-dealer registered with the SEC under the Securities and Exchange Act of 1934 and is a member of the Financial Industry Regulatory Authority, Inc. (FINRA). SIMC is an investment advisor registered with the SEC under the Investment Advisers Act of 1940 and with the Commodity Futures Trading Commission (CFTC) under the Commodity Futures Exchange Act. SPTC is a limited purpose federal thrift chartered and regulated by the Office of the Comptroller of the Currency. STC is a Pennsylvania trust company, regulated by the Pennsylvania Department of Banking and Securities. SIEL is an investment manager and financial institution subject to regulation by the Financial Conduct Authority of the United Kingdom. In addition, various SEI subsidiaries are subject to the jurisdiction of regulatory authorities in Canada, the Republic of Ireland and other foreign countries. The Company has a minority ownership interest 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 affect on us and our clients.

The various governmental agencies and self-regulatory authorities that regulate or supervise the Company and various of 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 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 and fines sought by regulatory authorities have increased substantially over the last several years, and certain regulators have been more likely in recent years to commence enforcement actions or to advance or support legislation targeted at the financial services industry. Governmental scrutiny and legal and enforcement proceedings can also have a negative impact on our reputation and on the morale and performance of our employees, which could adversely affect our businesses and results of operations.

We are subject to the USA PATRIOT Act of 2001, which contains anti-money laundering and financial transparency laws and requires implementation of regulations applicable to financial services companies, including standards for verifying client identification and monitoring client transactions and detecting and reporting suspicious activities. Anti-money laundering laws outside the United States contain similar requirements. 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.

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Existing or future regulations that affect these solutions could lead to a reduction in sales of these solutions or require modifications of these solutions.

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 legislative activity in the United States (including the Dodd-Frank Wall Street Reform and Consumer Protection Act of 2010 and attendant rule making activities) and in other jurisdictions (including the European Union, the United Kingdom and the Republic of Ireland) 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, review our compliance procedures, solution and service offerings, and business operations, and make changes as we deem necessary. These additional activities and required changes may result in increased expense or may reduce revenues.

Our bank clients are subject to supervision by federal and state banking 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 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 "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 Results of Operations" of our Annual Report on Form 10-K for the year ended December 31, 2015. There have been no material changes to this information as it is disclosed in our Annual Report on Form 10-K for 2015.

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, 2016 that has materially affected, or is reasonably likely to materially affect, our internal control over financial reporting.

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PART II. OTHER INFORMATION

Item 1. Legal Proceedings.

The plaintiffs in two of the cases filed in East Baton Rouge have granted SEI and SPTC an indefinite extension to respond to the petitions.

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Appeals for the Fifth Circuit reversed that order, and the Supreme Court of the United States affirmed the Court of Appeals judgment on February 26, 2014. The matter was remanded to state court and no material activity has taken place since that date.

On October 2, 2014, plaintiffs filed an amended complaint. In the amended complaint, SEI Investments Global Funds Services (SGFS) was added as a defendant. The plaintiffs bring the case as a shareholder derivative action against SIMC and SGFS on behalf of certain SEI funds. The claims are based on Section 36(b) of the Investment Company Act of 1940, as amended, which allows shareholders of a mutual fund to sue the investment adviser of the fund or its affiliates for an alleged breach of fiduciary duty with respect to compensation received by the adviser or its affiliates. The plaintiffs have brought the suit against SIMC and SGFS with respect to five specific SEI Funds: the High Yield Bond, Tax-Managed Large Cap, and Tax-Managed Small/Mid Cap Funds, each of which is a series of the SEI Institutional Managed Trust, the Intermediate Term Municipal Fund, which is a series of the SEI Tax Exempt Trust, and the International Equity Fund, which is a series of the SEI Institutional International Trust (the SEI Funds). The plaintiffs seek: (1) damages for the SEI Funds in the amount of the alleged “excessive” fees earned by SIMC and SGFS beginning from the one year period prior to the filing of the lawsuit, plus interest, costs, and fees; (2) orders declaring that SIMC and SGFS allegedly violated Section 36(b) and enjoining SIMC and SGFS from further alleged violations; and (3) rescission of SIMC’s and SGFS’s contracts with the funds, and restitution of all allegedly excessive fees paid beginning from the one year period prior to the filing of the lawsuit, plus interest, costs, and fees. On November 24, 2014, SIMC and SGFS filed a motion to dismiss the amended complaint. On July 13, 2015, the Court denied the motion to dismiss with respect to SIMC, and granted the motion to dismiss with respect to SGFS. On September 18, 2015, plaintiffs filed a second amended complaint reinstating SGFS as a defendant in the case. The parties are currently engaged in discovery, which is expected to be completed in early 2017. While the outcome of this litigation is uncertain given its early phase, SIMC and SGFS believe that they have valid defenses to plaintiffs' claims and intend to defend the lawsuit vigorously, and SIMC and SGFS are not reasonably able to provide an estimate of the ultimate loss, if any, with respect to this lawsuit.

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, 2015. There have been no material changes in our risk factors from those disclosed in our Annual Report on Form 10-K for 2015.

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

(e)

Our Board of Directors has authorized the repurchase of up to $2.878 billion worth of our common stock through multiple authorizations. Currently, there is no expiration date for our common stock repurchase program. On April 19, 2016, our Board of Directors approved an increase in the stock repurchase program by an additional $200 million, increasing the available authorization to approximately $233 million.

Information regarding the repurchase of common stock during the three months ended March 31, 2016 is as follows:



Period	Total Number of Shares Purchased	Average Price Paid per Share		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 2016	150,000	$	38.26	150,000	$	107,388,000
February 2016	1,025,000	37.15		1,025,000	69,306,000
March 2016	898,000	40.92		898,000	32,540,000
Total	2,073,000	38.87		2,073,000

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 Chief Executive Officer.

31.2		Rule 13a-15(e)/15d-15(e) Certification of Chief Financial Officer.

32		Section 1350 Certifications.

99.1		Press release dated April 19, 2016 of SEI Investments Company related to an increase in authorization for the stock repurchase program.

99.2		Press release dated April 20, 2016 of SEI Investments Company related to the Company's financial and operating results for the first quarter ended March 31, 2016.

101.INS		XBRL Instance 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

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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 20, 2016	By:	/s/ Dennis J. McGonigle
			Dennis J. McGonigle
			Chief Financial Officer

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Consolidated Overview
(In thousands, except earnings per share)	For the Three Months Ended March 31,
	2016		2015		%

Revenues		$334,263		$325,444	3%
Net income	77,497		84,611		(8)%
Diluted earnings per share		$0.47		$0.50	(6)%



	Mar. 31,		Jun. 30,		Sept. 30,		Dec 31,		Mar. 31,
	2015		2015		2015		2015		2016
Private Banks:
Equity/Fixed Income programs		$19,296		$19,686		$18,243		$18,150		$18,370
Collective Trust Fund programs	9		13		3		4		4
Liquidity funds	5,551		5,280		5,469		5,835		5,521
Total assets under management		$24,856		$24,979		$23,715		$23,989		$23,895
Client assets under administration	17,643		17,485		16,896		17,532		18,324
Total assets		$42,499		$42,464		$40,611		$41,521		$42,219

Investment Advisors:
Equity/Fixed Income programs		$45,800		$46,951		$43,988		$46,123		$47,357
Collective Trust Fund programs	8		8		9		7		7
Liquidity funds	3,047		2,817		4,677		4,924		5,051
Total assets under management		$48,855		$49,776		$48,674		$51,054		$52,415

Institutional Investors:
Equity/Fixed Income programs		$74,178		$75,341		$70,818		$72,263		$73,468
Collective Trust Fund programs	94		93		96		96		97
Liquidity funds	3,246		2,960		2,655		2,883		2,390
Total assets under management		$77,518		$78,394		$73,569		$75,242		$75,955

Investment Managers:
Equity/Fixed Income programs		$25		$24		$59		$66		$72
Collective Trust Fund programs	20,965		20,632		19,863		32,117		32,385
Liquidity funds	1,091		1,007		848		832		733
Total assets under management		$22,081		$21,663		$20,770		$33,015		$33,190
Client assets under administration (A)	372,116		381,963		376,133		390,282		400,579
Total assets		$394,197		$403,626		$396,903		$423,297		$433,769

Investments in New Businesses:
Equity/Fixed Income programs		$756		$779		$752		$764		$803
Liquidity funds	106		57		51		47		41
Total assets under management		$862		$836		$803		$811		$844

LSV Asset Management:
Equity/Fixed Income programs		$84,123		$86,334		$76,958		$78,335		$78,390

Total:
Equity/Fixed Income programs (B)		$224,178		$229,115		$210,818		$215,701		$218,460
Collective Trust Fund programs	21,076		20,746		19,971		32,224		32,493
Liquidity funds	13,041		12,121		13,700		14,521		13,736
Total assets under management		$258,295		$261,982		$244,489		$262,446		$264,689

Client assets under administration (C)	389,759		399,448		393,029		407,814		418,903
Total assets		$648,054		$661,430		$637,518		$670,260		$683,592



	1st Qtr.		2nd Qtr.		3rd Qtr.		4th Qtr.		1st Qtr.
	2015		2015		2015		2015		2016
Private Banks:
Equity/Fixed Income programs		$18,869		$19,872		$19,080		$18,603		$17,644
Collective Trust Fund programs	8		12		6		3		3
Liquidity funds	5,755		5,256		5,443		5,511		5,661
Total assets under management		$24,632		$25,140		$24,529		$24,117		$23,308
Client assets under administration	17,504		17,823		17,504		17,775		17,248
Total assets		$42,136		$42,963		$42,033		$41,892		$40,556

Investment Advisors:
Equity/Fixed Income programs		$44,809		$47,027		$45,992		$46,044		$45,175
Collective Trust Fund programs	9		8		9		8		7
Liquidity funds	3,072		2,819		3,523		4,784		5,009
Total assets under management		$47,890		$49,854		$49,524		$50,836		$50,191

Institutional Investors:
Equity/Fixed Income programs		$73,760		$75,426		$73,568		$72,463		$71,779
Collective Trust Fund programs	95		94		93		96		98
Liquidity funds	3,021		3,354		2,843		3,109		2,834
Total assets under management		$76,876		$78,874		$76,504		$75,668		$74,711

Investment Managers:
Equity/Fixed Income programs		$27		$25		$24		$59		$66
Collective Trust Fund programs	21,108		21,387		20,449		30,960		30,784
Liquidity funds	1,066		1,010		978		960		832
Total assets under management		$22,201		$22,422		$21,451		$31,979		$31,682
Client assets under administration	367,206		378,347		380,247		390,080		387,421
Total assets		$389,407		$400,769		$401,698		$422,059		$419,103

Investments in New Businesses:
Equity/Fixed Income programs		$755		$784		$776		$788		$757
Liquidity funds	101		75		49		47		48
Total assets under management		$856		$859		$825		$835		$805

LSV Asset Management:
Equity/Fixed Income programs		$83,439		$87,409		$80,656		$79,634		$74,699

Total:
Equity/Fixed Income programs		$221,659		$230,543		$220,096		$217,591		$210,120
Collective Trust Fund programs	21,220		21,501		20,557		31,067		30,892
Liquidity funds	13,015		12,514		12,836		14,411		14,384
Total assets under management		$255,894		$264,558		$253,489		$263,069		$255,396

Client assets under administration (A)	384,710		396,170		397,751		407,855		404,669
Total assets		$640,604		$660,728		$651,240		$670,924		$660,065

Document and Entity Information - shares	3 Months Ended
Document and Entity Information - shares	Mar. 31, 2016	Apr. 19, 2016
Document Information [Line Items]
Entity Registrant Name	SEI INVESTMENTS CO
Entity Central Index Key	0000350894
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Document Type	10-Q
Document Period End Date	Mar. 31, 2016
Document Fiscal Year Focus	2016
Document Fiscal Period Focus	Q1
Trading Symbol	SEIC
Amendment Flag	false
Entity Common Stock, Shares Outstanding		161,993,066

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Current Assets:
Receivables, allowance for doubtful accounts	$ 700	$ 649
Property and Equipment, accumulated depreciation	266,022	259,501
Capitalized Software, accumulated amortization	$ 270,313	$ 259,358
SEI Investments shareholders' equity:
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	750,000,000	750,000,000
Common stock, shares issued	161,908,000	163,733,000
Common stock, shares outstanding	161,908,000	163,733,000


•	Revenue growth in the quarter was primarily driven by higher Asset management, administration, and distribution fees from improved cash flows from new and existing clients. The market volatility occurring during the second half of 2015 and early 2016 negatively impacted our asset-based fee revenues and partially offset our revenue growth.


•	Sales events, net of client losses, during first-quarter 2016 totaled approximately $38.6 million and are expected to generate net annualized recurring revenues of approximately $33.2 million when contract values are fully realized.


•	Our average assets under management, excluding LSV, increased $8.2 billion, or five percent, to $180.7 billion, as compared to $172.5 billion during the first-quarter 2015 (see attached Average Asset Balances schedules for further details).


•	Our average assets under administration increased $20.0 billion, or five percent, to $404.7 billion in the first-quarter 2016, as compared to $384.7 billion during the first-quarter 2015 (see attached Average Asset Balances schedules for further details).


•	Our earnings from LSV decreased by $5.2 million, or 15 percent, to $29.2 million in first-quarter 2016 as compared to $34.3 million in first-quarter 2015. The decline in earnings was due to lower assets under management from unfavorable market conditions and reduced performance fees.


•	We capitalized $9.5 million and $8.0 million of software development costs in first-quarter 2016 and 2015, respectively, of which $7.6 million and $7.3 million are related to continued enhancements to the SEI Wealth Platform.


•	Amortization expense related to the SEI Wealth Platform increased to $11.0 million during the first-quarter 2016 as compared to $10.3 million during the first-quarter 2015 due to continued enhancements.


•	Although revenues increased in our Investment Advisors and Investment Managers segments, higher personnel and other operating costs mainly related to servicing new and existing clients and increased technology development spending in these segments caused operating margins to decline.


•	We recorded pre-tax gains of $2.8 million, or $.01 diluted earnings per share, from the sale of SEI Asset Korea in first-quarter 2016 and 2015.


•	Our effective tax rates were 35.2 percent in first-quarter 2016 and 35.4 percent in first-quarter 2015.


•	We repurchased 2.1 million shares of our common stock for $80.6 million during the first-quarter 2016.



	March 31,			December 31,
	2016			2015
Assets
Current Assets:
Cash and cash equivalents		$638,253			$679,661
Restricted cash	5,500			5,500
Receivables from investment products	51,633			48,098
Receivables, net	229,558			223,023
Securities owned	21,264			21,235
Other current assets	28,829			26,207
Total Current Assets	975,037			1,003,724

Property and Equipment, net	141,790			143,977
Capitalized software, net	289,044			290,522
Investments available for sale	78,356			81,294
Investments in affiliated funds, at fair value	4,183			4,039
Investment in unconsolidated affiliates	44,247			49,580
Deferred income taxes	4,117			—
Other assets, net	14,072			15,492
Total Assets		$1,550,846			$1,588,628

Liabilities and Equity
Current Liabilities:
Accounts payable		$4,354			$4,511
Accrued liabilities	165,005			217,587
Deferred revenue	2,936			2,385
Total Current Liabilities	172,295			224,483

Deferred income taxes	66,410			63,028
Other long-term liabilities	11,676			11,397
Total Liabilities	250,381			298,908

Shareholders' Equity:
Common stock	1,619			1,637
Capital in excess of par value	912,506			910,513
Retained earnings	408,684			402,860
Accumulated other comprehensive loss, net	(22,344		)	(25,290		)
Total Shareholders' Equity	1,300,465			1,289,720
Total Liabilities and Shareholders' Equity		$1,550,846			$1,588,628

Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Current Assets:
Cash and cash equivalents	$ 638,253	$ 679,661
Restricted cash	5,500	5,500
Receivables from investment products	51,633	48,098
Receivables, net of allowance for doubtful accounts of $700 and $649	229,558	223,023
Securities owned	21,264	21,235
Other current assets	28,829	26,207
Total Current Assets	975,037	1,003,724
Property and Equipment, net of accumulated depreciation of $266,022 and $259,501	141,790	143,977
Capitalized Software, net of accumulated amortization of $270,313 and $259,358	289,044	290,522
Investments Available for Sale	78,356	81,294
Investments in Affiliated Funds, at fair value	4,183	4,039
Investment in Unconsolidated Affiliates	44,247	49,580
Deferred Income Taxes	4,117	0
Other Assets, net	14,072	15,492
Total Assets	1,550,846	1,588,628
Current Liabilities:
Accounts payable	4,354	4,511
Accrued liabilities	165,005	217,587
Deferred revenue	2,936	2,385
Total Current Liabilities	172,295	224,483
Deferred Income Taxes	66,410	63,028
Other Long-term Liabilities	11,676	11,397
Total Liabilities	$ 250,381	$ 298,908
Commitments and Contingencies
SEI Investments shareholders' equity:
Common stock, $.01 par value, 750,000 shares authorized; 161,908 and 163,733 shares issued and outstanding	$ 1,619	$ 1,637
Capital in excess of par value	912,506	910,513
Retained earnings	408,684	402,860
Accumulated other comprehensive loss, net	(22,344)	(25,290)
Total Shareholders' Equity	1,300,465	1,289,720
Total Liabilities and Shareholders' Equity	$ 1,550,846	$ 1,588,628

Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Revenues:
Asset management, administration and distribution fees	$ 251,437	$ 246,768
Information processing and software servicing fees	73,399	70,653
Transaction-based and trade execution fees	9,427	8,023
Total revenues	334,263	325,444
Expenses:
Subadvisory, distribution and other asset management costs	39,195	38,517
Software royalties and other information processing costs	7,748	7,509
Brokerage commissions	7,108	5,972
Compensation, benefits and other personnel	101,931	94,186
Stock-based compensation	3,789	3,750
Consulting, outsourcing and professional fees	38,506	35,628
Data processing and computer related	15,718	13,400
Facilities, supplies and other costs	15,997	17,059
Amortization	11,012	10,358
Depreciation	6,447	5,995
Total expenses	247,451	232,374
Income from operations	86,812	93,070
Net (loss) gain from investments	(126)	250
Interest and dividend income	1,083	969
Interest expense	(114)	(113)
Equity in earnings of unconsolidated affiliates	29,192	34,033
Gain on sale of subsidiary	2,791	2,791
Income before income taxes	119,638	131,000
Income taxes	42,141	46,389
Net income	$ 77,497	$ 84,611
Basic earnings per common share	$ 0.48	$ 0.51
Shares used to compute basic earnings per share	163,013	166,695
Diluted earnings per common share	$ 0.47	$ 0.50
Shares used to compute diluted earnings per share	166,145	170,703

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Statement of Comprehensive Income [Abstract]
Net income	$ 77,497	$ 84,611
Other comprehensive gain (loss), net of tax:
Foreign currency translation adjustments	2,429	(8,783)
Unrealized gain (loss) on investments:
Unrealized gains during the period, net of income taxes of $(191) and $(25)	330	7
Less: reclassification adjustment for losses (gains) realized in net income, net of income taxes of $(103) and $52	187	(94)
Unrealized gain (loss) on investments:	517	(87)
Total other comprehensive gain (loss), net of tax	2,946	(8,870)
Comprehensive income	$ 80,443	$ 75,741

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Cash flows from operating activities:
Net income	$ 77,497	$ 84,611
Adjustments to reconcile net income to net cash provided by operating activities (See Note 1)	524	(6,681)
Net cash provided by operating activities	78,021	77,930
Cash flows from investing activities:
Additions to restricted cash	0	(4)
Additions to property and equipment	(4,609)	(7,386)
Additions to capitalized software	(9,477)	(7,989)
Purchases of marketable securities	(8,652)	(4,107)
Prepayments and maturities of marketable securities	12,090	7,375
Sales of marketable securities	185	0
Receipt of contingent payment from sale of SEI AK	2,791	2,791
Other investing activities	200	(1,000)
Net cash used in investing activities	(7,472)	(10,320)
Cash flows from financing activities:
Purchase and retirement of common stock	(78,372)	(67,534)
Proceeds from issuance of common stock	6,476	19,209
Tax benefit on stock options exercised	624	3,268
Payment of dividends	(42,677)	(40,178)
Net cash used in financing activities	(113,949)	(85,235)
Effect of exchange rate changes on cash and cash equivalents	1,992	(6,561)
Net decrease in cash and cash equivalents	(41,408)	(24,186)
Cash and cash equivalents, beginning of period	679,661	667,446
Cash and cash equivalents, end of period	$ 638,253	$ 643,260

Variable Interest Entities - Investment Products	3 Months Ended
Variable Interest Entities - Investment Products	Mar. 31, 2016
Financial Support for Nonconsolidated Legal Entity [Abstract]
Variable Interest Entities - Investment Products	Variable Interest Entities – Investment Products 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 adopted the amendments contained in ASU No. 2015-02, Consolidation (Topic 810) - Amendments to the Consolidation Analysis (ASU 2015-02) during the first quarter 2016. ASU 2015-02 amends the current guidance for both the VIE and the voting interest entity (VOE) consolidation models. This guidance rescinds the indefinite deferral of the VIE guidance for investment companies that permitted application of the risks and rewards based approach. 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 entities either do not meet the definition of a VIE or the Company does not hold a variable interest in the entities. The entities either qualify for the money market scope exception, or are entities in which the Company’s asset management, distribution, administration and custodial fees are commensurate with the services provided and include fair terms and conditions, or are entities that are limited partnerships which have substantive kick-out rights. The Company acts as a fiduciary and does not hold any other interests other than insignificant seed money investments in the pooled investment vehicles. For this reason, the Company also concluded that it is not required to consolidate the pooled investment vehicles under the VOE 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 $12,477 and $10,719 in fees during the three months ended March 31, 2016 and 2015, respectively.

Lines of Credit	3 Months Ended
Lines of Credit	Mar. 31, 2016
Line of Credit Facility [Abstract]
Lines of Credit	Line of Credit The Company has a five-year $300,000 Credit Agreement (the Credit Facility) with Wells Fargo Bank, National Association, and a syndicate of other lenders. The Credit Facility is scheduled to expire in February 2017, 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 1.25 percent above LIBOR. There is also a commitment fee equal to 0.15 percent per annum on the daily unused portion of the facility. The aggregate amount of the Credit Facility may be increased by an additional $100,000 under certain conditions set forth in the agreement. The Credit Facility contains covenants that restrict the ability of the Company to engage in mergers, consolidations, asset sales, investments, transactions with affiliates, or to incur liens, 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. None of the covenants of the Credit Facility negatively affect the Company’s liquidity or capital resources. Both the interest rate and commitment fee prices may increase if the Company’s leverage ratio reaches certain levels. 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 had no borrowings under the Credit Facility at March 31, 2016. The Company was in compliance with all covenants of the Credit Facility during the three months ended March 31, 2016.

Commitments And Contingencies	3 Months Ended
Commitments And Contingencies	Mar. 31, 2016
Commitments and Contingencies Disclosure [Abstract]
Commitments And Contingencies	Commitments and Contingencies In the normal course of business, the Company is party to various claims and legal proceedings. SEI has been named in six lawsuits filed in Louisiana. Five lawsuits were filed in the 19th Judicial District Court for the Parish of East Baton Rouge. One of the five actions purports to set forth claims on behalf of a class and also names SPTC as a defendant. Two of the other actions also name SPTC as a defendant. All five actions name various defendants in addition to SEI, and, in all five actions, the plaintiffs purport to bring a cause of action against SEI and/or SPTC under the Louisiana Securities Act. Two of the five actions include claims for violations of the Louisiana Racketeering Act and possibly conspiracy. In addition, another group of plaintiffs filed a lawsuit in the 23rd Judicial District Court for the Parish of Ascension against SEI and SPTC and other defendants, asserting claims of negligence, breach of contract, breach of fiduciary duty, violations of the uniform fiduciaries law, negligent misrepresentation, detrimental reliance, violations of the Louisiana Securities Act and Louisiana Racketeering Act, and conspiracy. The underlying allegations in all actions relate to the purported role of SPTC in providing back-office services to Stanford Trust Company. The petitions allege that SEI and SPTC aided and abetted or otherwise participated in the sale of “certificates of deposit” issued by Stanford International Bank. The case filed in Ascension Parish was removed to federal court and transferred by the Judicial Panel on Multidistrict Litigation to the United States District Court for the Northern District of Texas. The schedule for responding to that petition has not yet been established. The plaintiffs in two of the cases filed in East Baton Rouge have granted SEI and SPTC an indefinite extension to respond to the petitions. In a third East Baton Rouge action, brought as a class action, SEI and SPTC filed exceptions, which the Court granted in part, dismissing the claims under the Louisiana Unfair Trade Practices Act. Plaintiffs then filed a motion for class certification, and SEI and SPTC also filed a motion for summary judgment. The Court deferred the motion for summary judgment, stating that the motion would not be set for hearing until after the hearing on class certification. After the Court held a hearing on class certification, it certified a class composed of persons who purchased or renewed any Stanford International Bank certificates of deposit (SIB CDs) in Louisiana between January 1, 2007 and February 13, 2009 or any person for whom the Stanford Trust Company purchased SIB CDs in Louisiana between January 1, 2007 and February 13, 2009. SEI and SPTC filed motions for appeal from the class certification judgments. On February 1, 2013, plaintiffs filed a motion for Leave to File a First Amended and Restated Class Action Petition in which they asked the Court to allow them to amend the petition and add claims against certain of SEI's insurance carriers. On February 5, 2013, the Court granted two of the motions for appeal and the motion for leave to amend. On February 28, 2013, SEI responded to the First Amended and Restated Class Action Petition by seeking dismissal of the action. On March 11, 2013, the newly-added insurance carrier defendants removed the case to the Middle District of Louisiana. SEI notified the Judicial Panel on Multidistrict Litigation (MDL) of this case as a potential tag-along action. Plaintiffs filed a motion to remand the action to state court. On March 25, 2013, SEI filed a motion requesting that the federal court decline to adopt the state court's order regarding class certification, which the court dismissed without prejudice to renew upon a determination of the jurisdictional issue. On August 7, 2013, the MDL Panel transferred the matter against SEI to the Northern District of Texas. On October 1, 2014, SEI filed a renewed motion to dismiss in the Northern District of Texas, and on October 6, 2014, the District Court denied plaintiffs’ motion to remand. On June 17, 2015, the Court denied the motion to dismiss, and on June 24, 2015 set a briefing schedule for SEI and SPTC’s motion challenging the Louisiana court’s decision to certify a class, which motion was filed on July 15, 2015. SEI and SPTC filed their answer on July 1, 2015, and this case is now pending in the Northern District of Texas. On July 15, 2015, SEI and SPTC also filed motions seeking reconsideration of the District Court’s June 17 denial of the motion to dismiss or, in the alternative, seeking leave to pursue an interlocutory appeal of certain elements of the denial, as well as a motion seeking partial judgment on the pleadings pursuant to Federal Rule of Civil Procedure 12(c) with respect to claims brought under Section 712(D) of the Louisiana Securities Law. On September 22, 2015, the District Court granted SEI and SPTC’s motion for reconsideration of the June 17 denial of the motion to dismiss and dismissed plaintiffs’ claims under Section 714(A) of the Louisiana Securities Law, but declined to dismiss, or certify for interlocutory appeal, plaintiffs’ claims under Section 714(B) of the Louisiana Securities Law. On November 4, 2015, the District Court granted SEI and SPTC's motion to dismiss plaintiffs' claims under Section 712(D) of the Louisiana Securities Law. Consequently, the only claims of plaintiffs still pending before the District Court are plaintiffs' claims for secondary liability against SEI and SPTC under Section 714(B) of the Louisiana Securities Law. In the two other cases filed in East Baton Rouge, brought by the same counsel who filed the class action, virtually all of the litigation to date has involved motions practice and appellate litigation regarding the existence of federal subjection matter jurisdiction under the federal Securities Litigation Uniform Standards Act (SLUSA). After the matter was removed to the United States District Court for the Northern District of Texas, that court dismissed the action under SLUSA. The Court of Appeals for the Fifth Circuit reversed that order, and the Supreme Court of the United States affirmed the Court of Appeals judgment on February 26, 2014. The matter was remanded to state court and no material activity has taken place since that date. While the outcome of this litigation is uncertain given its early phase, SEI and SPTC believe that they have valid defenses to plaintiffs' claims and intend to defend the lawsuits vigorously. Because of the uncertainty of the make-up of the classes, the specific theories of liability that may survive a motion for summary judgment or other dispositive motion, the lack of discovery regarding damages, causation, mitigation and other aspects that may ultimately bear upon loss, the Company is not reasonably able to provide an estimate of loss, if any, with respect to the foregoing lawsuits. A lawsuit entitled Steven Curd and Rebel Curd v. SEI Investments Management Corporation was filed against SIMC in the United States District Court for the Eastern District of Pennsylvania on December 11, 2013. On August 28, 2014, the Court granted SIMC’s motion to dismiss the initial complaint in the lawsuit, but also granted plaintiffs leave to amend the complaint. On October 2, 2014, plaintiffs filed an amended complaint. In the amended complaint, SEI Investments Global Funds Services (SGFS) was added as a defendant. The plaintiffs bring the case as a shareholder derivative action against SIMC and SGFS on behalf of certain SEI funds. The claims are based on Section 36(b) of the Investment Company Act of 1940, as amended, which allows shareholders of a mutual fund to sue the investment adviser of the fund or its affiliates for an alleged breach of fiduciary duty with respect to compensation received by the adviser or its affiliates. The plaintiffs have brought the suit against SIMC and SGFS with respect to five specific SEI Funds: the High Yield Bond, Tax-Managed Large Cap, and Tax-Managed Small/Mid Cap Funds, each of which is a series of the SEI Institutional Managed Trust, the Intermediate Term Municipal Fund, which is a series of the SEI Tax Exempt Trust, and the International Equity Fund, which is a series of the SEI Institutional International Trust (the SEI Funds). The plaintiffs seek: (1) damages for the SEI Funds in the amount of the alleged “excessive” fees earned by SIMC and SGFS beginning from the one year period prior to the filing of the lawsuit, plus interest, costs, and fees; (2) orders declaring that SIMC and SGFS allegedly violated Section 36(b) and enjoining SIMC and SGFS from further alleged violations; and (3) rescission of SIMC’s and SGFS’s contracts with the funds, and restitution of all allegedly excessive fees paid beginning from the one year period prior to the filing of the lawsuit, plus interest, costs, and fees. On November 24, 2014, SIMC and SGFS filed a motion to dismiss the amended complaint. On July 13, 2015, the Court denied the motion to dismiss with respect to SIMC, and granted the motion to dismiss with respect to SGFS. On September 18, 2015, plaintiffs filed a second amended complaint reinstating SGFS as a defendant in the case. The parties are currently engaged in discovery, which is expected to be completed in early 2017. While the outcome of this litigation is uncertain given its early phase, SIMC and SGFS believe that they have valid defenses to plaintiffs' claims and intend to defend the lawsuit vigorously, and SIMC and SGFS are not reasonably able to provide an estimate of the ultimate loss, if any, with respect to this lawsuit. On November 26, 2014, a Writ of Summons was issued to two of our subsidiaries, SEI Investments - Global Fund Services Limited (GFSL) and SEI Investments - Trustee & Custodial Services (Ireland) Limited (T&C), to appear before the Court of First Instance Antwerp, Belgium. The plaintiffs in this case allege that through their initial investments in collective investment funds domiciled in Netherlands and subsequent transfer of claim rights to a Belgium domiciled partnership, they are beneficial owners of a portfolio of life settlement policies (the Portfolio) which lapsed due to a failure to make premium payments. The plaintiffs seek to recover jointly and severally from nine defendants including GFSL and T&C, damages of approximately $84 million. GFSL and T&C’s involvement in the litigation appears to arise out of their historical provision of administration and custody services, respectively, to the Strategic Life Settlement Fund PLC, who, together with its managers, appear to be the principal defendants in this claim. On December 4, 2015, the Belgium Court dismissed plaintiff's claims for a lack of jurisdiction. On December 22, 2015, the plaintiffs appealed the dismissal. While the outcome of this action is uncertain given its early phase and the lack of specific theories of liability asserted against GFSL and T&C, each of GFSL and T&C believe that they have valid defenses to plaintiffs’ claims and intend to defend the lawsuit vigorously, and GFSL and T&C are not reasonably able to provide an estimate of the ultimate loss, if any, with respect to this lawsuit.

Sale of SEI Asset Korea	3 Months Ended
Sale of SEI Asset Korea	Mar. 31, 2016
Disposal Group, Not Discontinued Operation, Disposal Disclosures [Abstract]
Sale of SEI Asset Korea	Sale of SEI Asset Korea On July 31, 2012, the Company, MetLife International Holdings, Inc. (MetLife) and International Finance Corporation (IFC) entered into a definitive agreement with Baring Asset Management Limited (Barings) to sell all ownership interest in SEI Asset Korea (SEI AK). SEI AK was located in South Korea and provided domestic equity and fixed income investment management services to financial institutions and pension funds. On March 28, 2013, all conditions subject to closing the transaction were satisfied and all ownership interests in SEI AK were transferred to Barings. Under the terms of the agreement, a portion of the purchase price was paid upon closing with up to an additional $11,220 payable to the Company as a contingent purchase price with respect to three one-year periods ending on December 31, 2013, 2014, and 2015 depending upon whether SEI AK achieves specified revenue measures during such periods. The Company recognized pre-tax gains of $2,791, or $0.01 diluted earnings per share, during the three months ended March 31, 2016 and 2015 representing the final annual payments under the terms of the agreement. The Company's gains from the sale of SEI AK are included in Gain on sale of subsidiary on the accompanying Consolidated Statement of Operations.

Summary of Significant Accounting Policies (Policy)	3 Months Ended
Summary of Significant Accounting Policies (Policy)	Mar. 31, 2016
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, 2016, the results of operations for the three months ended March 31, 2016 and 2015, and cash flows for the three month periods ended March 31, 2016 and 2015. 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, 2015. There have been no significant changes in significant accounting policies during the three months ended March 31, 2016 as compared to the significant accounting policies described in the Company’s Annual Report on Form 10-K for the year ended December 31, 2015 with the exception of the adoption of Accounting Standards Update (ASU) No. 2015-02, Consolidation (Topic 810) - Amendments to the Consolidation Analysis (See Note 3) and ASU No. 2015-07, Fair Value Measurement (Topic 820) - Disclosures for Investments in Certain Entities That Calculate Net Asset Value per Share (See Note 5).
Cash and Cash Equivalents	Statements of Cash Flows For purposes of the Consolidated Statements of Cash Flows, the Company considers investment instruments purchased with an original maturity of three months or less to be cash equivalents.
New Accounting Pronouncements	New Accounting Pronouncements On May 28, 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers (ASU 2014-09), requiring an entity to recognize the amount of revenue to which it expects to be entitled for the transfer of promised goods or services to customers. ASU 2014-09 also requires additional disclosure about the nature, amount, timing and uncertainty of revenue and cash flows arising from customer contracts, including significant judgments and changes in judgments and assets recognized from costs incurred to obtain or fulfill a contract. The updated standard permits the use of either the retrospective or cumulative effect transition method. ASU 2014-09 currently becomes effective for the Company during the first quarter 2018. The Company is currently evaluating the transition method that will be elected and the effect that the updated standard will have on its consolidated financial statements and related disclosures. In March 2016, the FASB issued ASU No. 2016-08, Principal versus Agent Considerations (Reporting Revenue Gross versus Net) (ASU 2016-08), that amends the principal versus agent guidance in ASU 2014-09. ASU 2016-08 clarifies that the analysis must focus on whether the entity has control of the goods or services before they are transferred to the customer. ASU 2016-08 also provides additional guidance about how to apply the control principle when services are provided and when goods or services are combined with other goods or services. The effective date of the standard for the Company will coincide with ASU 2014-09 during the first quarter 2018. The Company is currently evaluating the effect that the updated standard will have on its consolidated financial statements and related disclosures. In April 2016, the FASB issued ASU No. 2016-10, Identifying Performance Obligations and Licensing (ASU 2016-10) that amends the revenue guidance in ASU 2014-09 on identifying performance obligations and accounting for licenses of intellectual property. ASU 2016-10 changed the FASB's previous proposals on renewals of right-to-use licenses and contractual restrictions. The effective date of the standard for the Company will coincide with ASU 2014-09 during the first quarter 2018. The Company is currently evaluating the effect that the updated standard will have on its consolidated financial statements and related disclosures. In January 2016, the FASB issued ASU No. 2016-01, Recognition and Measurement of Financial Assets and Financial Liabilities (ASU 2016-01) that will significantly change the income statement impact of equity investments held by an entity, and the recognition of changes in fair value of financial liabilities when the fair value option is elected. ASU 2016-01 becomes effective for the Company during the first quarter 2018. The Company is currently evaluating the effect that the updated standard will have on its consolidated financial statements and related disclosures. In February 2016, the FASB issued ASU No. 2016-02, Leases (ASU 2016-02) requiring lessees to recognize a right-of-use asset and a lease liability on the balance sheet for all leases with the exception of short-term leases. For lessees, leases will continue to be classified as either operating or finance leases in the income statement. Lessor accounting is similar to the current model but updated to align with certain changes to the lessee model. Lessors will continue to classify leases as operating, direct financing or sales-type leases. The new standard must be adopted using a modified retrospective transition and requires application of the new guidance at the beginning of the earliest comparative period presented. The updated standard is effective for the Company beginning in the first quarter of 2019. Early adoption is permitted. The Company is currently evaluating the transition method that will be elected and the effect that the updated standard will have on its consolidated financial statements and related disclosures. In March 2016, the FASB issued ASU No. 2016-09, Improvements to Employee Share-Based Payment Accounting (ASU 2016-09) requiring an entity to record all excess tax benefits and tax deficiencies as an income tax benefit or expense in the income statement. ASU 2016-09 will also require an entity to elect an accounting policy to either estimate the number of forfeitures or account for forfeitures when they occur. ASU 2016-09 becomes effective for the Company during the first quarter 2017. The Company is currently evaluating the effect that the updated standard will have 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 accounts for its interest in LSV using the equity method because of its less than 50 percent ownership. The Company’s interest in the net assets of LSV is reflected in Investment in unconsolidated affiliates on the accompanying Consolidated Balance Sheets and its interest in the earnings of LSV is reflected in Equity in earnings of unconsolidated affiliates on the accompanying Consolidated Statements of Operations.
Variable Interest Entities	The Company has adopted the amendments contained in ASU No. 2015-02, Consolidation (Topic 810) - Amendments to the Consolidation Analysis (ASU 2015-02) during the first quarter 2016. ASU 2015-02 amends the current guidance for both the VIE and the voting interest entity (VOE) consolidation models. This guidance rescinds the indefinite deferral of the VIE guidance for investment companies that permitted application of the risks and rewards based approach. 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 entities either do not meet the definition of a VIE or the Company does not hold a variable interest in the entities. The entities either qualify for the money market scope exception, or are entities in which the Company’s asset management, distribution, administration and custodial fees are commensurate with the services provided and include fair terms and conditions, or are entities that are limited partnerships which have substantive kick-out rights. The Company acts as a fiduciary and does not hold any other interests other than insignificant seed money investments in the pooled investment vehicles. For this reason, the Company also concluded that it is not required to consolidate the pooled investment vehicles under the VOE model.
Fair Value of Financial Instruments	The fair value of the Company’s financial assets and liabilities, except for the Company's investment funds sponsored by LSV, is determined in accordance with the fair value hierarchy. The fair value of the Company’s Level 1 financial assets consist mainly of investments in open-ended mutual funds 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), Federal Home Loan Bank (FHLB) and other U.S. government agency short-term notes and investment grade commercial paper 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 2020 to 2041. The Company has retrospectively adopted ASU No. 2015-07, Fair Value Measurement (Topic 820) - Disclosures for Investments in Certain Entities That Calculate Net Asset Value per Share (ASU 2015-07) during the first quarter 2016 for all periods presented. The fair value of the Company's investment 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 funds allow for investor redemptions at the end of each calendar month. In accordance with ASU 2015-07, this investment has not been classified in the fair value hierarchy. The valuation of the Company's Level 2 financial assets held by SIDCO and SPTC are based upon securities pricing policies and procedures utilized by third-party pricing vendors. The pricing policies and procedures applied during the three months ended March 31, 2016 were consistent with those as described in our Annual Report on Form 10-K at December 31, 2015.
Available-for-sale Securities	These net unrealized gains and losses are reported as a separate component of Accumulated other comprehensive loss on the accompanying Consolidated Balance Sheets.
Investments in Affiliated Funds	The fair value of the Company's investment 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 funds allow for investor redemptions at the end of each calendar month. In accordance with ASU 2015-07, this investment has not been classified in the fair value hierarchy.
Securities Owned	The Company’s broker-dealer subsidiary, SIDCO, has investments in U.S. government agency and commercial paper 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.

Investment In Unconsolidated Affiliates (Condensed Statement Of Operations Of LSV) (Details) - L S V Asset Management [Member] - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Schedule of Equity Method Investments [Line Items]
Revenue of LSV Asset Management	$ 92,653	$ 105,895
Net income of LSV Asset Management	$ 74,457	$ 87,425

Variable Interest Entities - Investment Products (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
SEI-Sponsored Open-Ended Money Market Mutual Funds [Member]
Financial Support for Nonconsolidated Legal Entity [Line Items]
Fees waived according to expense lmitation agreements	$ 12,477	$ 10,719

Composition of Certain Financial Statement Captions (Receivables) (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Items Included in Consolidated Statement of Financial Condition [Abstract]
Trade receivables	$ 58,817	$ 47,179
Fees earned, not billed	162,493	154,919
Other receivables	8,948	21,574
Receivables, Gross, Current	230,258	223,672
Less: Allowance for doubtful accounts	(700)	(649)
Receivables, net	$ 229,558	$ 223,023

Composition of Certain Financial Statement Captions (Accrued Liabilities) (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Items Included in Consolidated Statement of Financial Condition [Abstract]
Accrued employee compensation	$ 24,863	$ 74,687
Accrued consulting, outsourcing and professional fees	25,999	21,575
Accrued sub-advisory, distribution and other asset management fees	32,837	32,674
Accrued dividend payable	0	42,625
Accrued income taxes	38,492	3,505
Other accrued liabilities	42,814	42,521
Total accrued liabilities	$ 165,005	$ 217,587

Fair Value Measurements (Fair Value Of Certain Financial Assets And Liabilities) (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Equity available-for-sale securities	$ 10,560	$ 10,657
Fixed income available-for-sale securities	67,796	70,637
Fixed income securities owned	21,264	21,235
Investment funds sponsored by LSV	4,183	4,039
Assets, fair value	103,803	106,568
Quoted Prices In Active Markets For Identical Assets (Level 1) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Equity available-for-sale securities	10,560	10,657
Fixed income available-for-sale securities	0	0
Fixed income securities owned	0	0
Assets, fair value	10,560	10,657
Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Equity available-for-sale securities	0	0
Fixed income available-for-sale securities	67,796	70,637
Fixed income securities owned	21,264	21,235
Assets, fair value	$ 89,060	$ 91,872

Marketable Securities (Investments Available For Sale) (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities, amortized cost	$ 77,890	$ 81,639
Available-for-sale securities, accumulated gross unrealized gain, before tax	1,168	397
Available-for-sale securities, accumulated gross unrealized loss, before tax	(702)	(742)
Available-for-sale securities, fair value	78,356	81,294
SEI-Sponsored Mutual Funds [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities, amortized cost	8,351	8,474
Available-for-sale securities, accumulated gross unrealized gain, before tax	17	0
Available-for-sale securities, accumulated gross unrealized loss, before tax	(702)	(742)
Available-for-sale securities, fair value	7,666	7,732
Equity Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities, amortized cost	2,755	2,857
Available-for-sale securities, accumulated gross unrealized gain, before tax	139	68
Available-for-sale securities, accumulated gross unrealized loss, before tax	0	0
Available-for-sale securities, fair value	2,894	2,925
Debt Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities, amortized cost	66,784	70,308
Available-for-sale securities, accumulated gross unrealized gain, before tax	1,012	329
Available-for-sale securities, accumulated gross unrealized loss, before tax	0	0
Available-for-sale securities, fair value	$ 67,796	$ 70,637

Lines of Credit (Details) - Line of Credit [Member] $ in Thousands	3 Months Ended
	Mar. 31, 2016 USD ($)
Line of Credit Facility [Line Items]
Debt Instrument, Term	5 years
Credit facility maximum borrowing capacity	$ 300,000
Credit facility expiration date	Feb. 02, 2017
Credit facility commitment fee per annum on daily unused portion	0.15%
Aggregate amount that may increase under credit facility	$ 100,000
London Interbank Offered Rate (LIBOR) [Member]
Line of Credit Facility [Line Items]
Credit facility variable interest rate basis spread	1.25%

Shareholders' Equity (Narrative) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2016	Apr. 19, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost	$ 53,221
Total intrinsic value of options exercised	3,679
Aggregate intrinsic value of options exercisable	$ 174,765
Market value of Company's common stock	$ 43.05
Weighted average exercise price per share	$ 21.97
Total options that were outstanding	18,797
Total options that were exercisable	8,291
Common Stock Buyback [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares purchased and retired	2,073
Company purchased, cost	$ 80,586
Remaining stock repurchase authorization amount	$ 32,540
2014 Plan [Member] \| Tranche One [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting rate	50.00%
2014 Plan [Member] \| Tranche Two [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting rate	50.00%
Subsequent Event [Member] \| Common Stock Buyback [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Remaining stock repurchase authorization amount		$ 232,540
Increase in authorization for stock repurchase plan		$ 200,000

Shareholders' Equity (Stock-Based Compensation Expense) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Stockholders' Equity Note [Abstract]
Stock-based compensation expense	$ 3,789	$ 3,750
Less: Deferred tax benefit	(1,299)	(1,308)
Stock-based compensation expense, net of tax	$ 2,490	$ 2,442