10-Q

________________________________________________________

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

________________

FORM 10-Q

________________

(Mark One)

x QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE QUARTERLY PERIOD ENDED JUNE 30, 2013

OR

o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE TRANSITION PERIOD FROM              TO             

Commission File Number: 001-32236

________________

COHEN & STEERS, INC.

(Exact name of Registrant as specified in its charter)

________________

Delaware	14-1904657
(State or Other Jurisdiction of Incorporation or Organization)	(I.R.S. Employer Identification No.)
280 Park Avenue New York, NY	10017
(Address of Principal Executive Offices)	(Zip Code)

(212) 832-3232

(Registrant’s telephone number, including area code)

________________

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  x    No  o

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate website, 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  x    No  o

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. (Check one):

Large Accelerated Filer	o	Accelerated Filer	x
Non-Accelerated Filer	o  (Do not check if a smaller reporting company)	Smaller Reporting Company	o

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

The number of shares of the Registrant’s common stock, par value $0.01 per share, outstanding as of August 6, 2013 was 44,241,439.

________________________________________________________

COHEN & STEERS, INC. AND SUBSIDIARIES

Form 10-Q

Index

		Page
Part I.	Financial Information
Item 1.	Financial Statements	1
	Condensed Consolidated Statements of Financial Condition (Unaudited) as of June 30, 2013 and December 31, 2012	1
	Condensed Consolidated Statements of Operations (Unaudited) for the Three and Six Months Ended June 30, 2013 and 2012	2
	Condensed Consolidated Statements of Comprehensive Income (Unaudited) for the Three and Six Months Ended June 30, 2013 and 2012	3
	Condensed Consolidated Statements of Changes in Stockholders’ Equity and Redeemable Noncontrolling Interest (Unaudited) for the Six Months Ended June 30, 2013 and 2012	4
	Condensed Consolidated Statements of Cash Flows (Unaudited) for the Six Months Ended June 30, 2013 and 2012	5
	Notes to Condensed Consolidated Financial Statements (Unaudited)	7
Item 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations	25
Item 3.	Quantitative and Qualitative Disclosures About Market Risk	36
Item 4.	Controls and Procedures	36
Part II.	Other Information
Item 1.	Legal Proceedings	37
Item 1A.	Risk Factors	37
Item 2.	Unregistered Sales of Equity Securities and Use of Proceeds	37
Item 6.	Exhibits	38
Signatures		39

Items other than those listed above have been omitted because they are not applicable.

Forward-Looking Statements

This report and other documents filed by us contain forward-looking statements within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934, which reflect our current views with respect to, among other things, our operations and financial performance. You can identify these forward-looking statements by the use of words such as “outlook,” “believes,” “expects,” “potential,” “may,” “should,” “seeks,” “predicts,” “intends,” “plans,” “estimates,” “anticipates” or the negative versions of these words or other comparable words. Such forward-looking statements are subject to various risks and uncertainties.

Accordingly, there are or will be important factors that could cause actual outcomes or results to differ materially from those indicated in these statements. We believe that these factors include, but are not limited to, those described in the Risk Factors section of our Annual Report on Form 10-K for the year ended December 31, 2012, which is accessible on the Securities and Exchange Commission’s website at www.sec.gov and on our website at www.cohenandsteers.com. These factors should not be construed as exhaustive and should be read in conjunction with the other cautionary statements that are included in this report. We undertake no obligation to publicly update or review any forward-looking statement, whether as a result of new information, future developments or otherwise.

PART I—Financial Information

Item 1.Financial Statements

COHEN & STEERS, INC. AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF FINANCIAL CONDITION (Unaudited)

(in thousands, except share data)

	June 30, 2013			December 31, 2012
ASSETS
Cash and cash equivalents	$	107,465		$	95,412
Securities owned ($26,002)* ($12,357 and $849)**	99,638			97,155
Equity investments	7,532			8,106
Investments, available-for-sale	14,010			25,322
Accounts receivable	45,762			44,397
Due from broker ($12,358)*	31,561			17,617
Property and equipment—net	9,264			9,103
Goodwill	19,950			20,122
Intangible assets—net	1,746			1,790
Deferred income tax asset—net	8,978			10,171
Other assets ($103)*	7,295			8,120
Total assets	$	353,201		$	337,315
LIABILITIES AND STOCKHOLDERS’ EQUITY
Liabilities:
Accrued compensation	$	13,356		$	25,845
Securities sold but not yet purchased ($14,685)*	—			14,685
Income tax payable	9,746			8,836
Other liabilities and accrued expenses ($335)*	23,078			18,181
Total liabilities	46,180			67,547
Commitments and contingencies (See Note 11)
Redeemable noncontrolling interest	72,609			53,188
Stockholders’ equity:
Common stock, $0.01 par value; 500,000,000 shares authorized; 47,717,465 and 47,002,117 shares issued and outstanding at June 30, 2013 and December 31, 2012, respectively	477			470
Additional paid-in capital	443,623			429,377
Accumulated deficit	(105,670		)	(117,889		)
Accumulated other comprehensive income, net of tax	1,603			2,341
Less: Treasury stock, at cost, 3,480,161 and 3,239,093 shares at June 30, 2013 and December 31, 2012 respectively	(105,621		)	(97,719		)
Total stockholders’ equity	234,412			216,580
Total liabilities and stockholders’ equity	$	353,201		$	337,315

_________________________

* Asset and liability amounts in parentheses represent the consolidated balances at December 31, 2012 attributable to the Cohen & Steers Global Real Estate Long-Short Fund, L.P., which was a variable interest entity as of December 31, 2012.

** Pledged as collateral as of June 30, 2013 and December 31, 2012, respectively, attributable to the consolidated balances of Cohen & Steers Real Assets Fund and Cohen & Steers Active Commodities Fund, LP.

See notes to condensed consolidated financial statements

1

COHEN & STEERS, INC. AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited)

(in thousands, except per share data)

	Three Months Ended June 30,						Six Months Ended June 30,
	2013			2012			2013			2012
Revenue:
Investment advisory and administration fees	$	70,353		$	59,687		$	135,747		$	117,842
Distribution and service fees	3,741			2,747			7,175			5,248
Portfolio consulting and other	3,702			4,998			7,333			8,072
Total revenue	77,796			67,432			150,255			131,162
Expenses:
Employee compensation and benefits	24,895			22,927			48,272			44,595
Distribution and service fees	9,677			6,535			24,758			12,772
General and administrative	12,517			9,923			23,696			18,460
Depreciation and amortization	1,340			1,438			2,687			2,834
Amortization, deferred commissions	810			545			1,575			1,041
Total expenses	49,239			41,368			100,988			79,702
Operating income	28,557			26,064			49,267			51,460
Non-operating income:
Interest and dividend income—net	743			669			1,289			1,290
Loss from trading securities—net	(10,963		)	(2,469		)	(9,339		)	(748		)
Gain (loss) from available-for-sale securities—net	837			(84		)	1,328			603
Equity in (losses) earnings of affiliates	(427		)	(129		)	109			643
Other	(368		)	21			(639		)	(763		)
Total non-operating (loss) income	(10,178		)	(1,992		)	(7,252		)	1,025
Income before provision for income taxes	18,379			24,072			42,015			52,485
Provision for income taxes	9,870			9,045			18,005			19,200
Net income	8,509			15,027			24,010			33,285
Less: Net loss attributable to redeemable noncontrolling interest	6,773			1,052			6,413			848
Net income attributable to common shareholders	$	15,282		$	16,079		$	30,423		$	34,133
Earnings per share attributable to common shareholders:
Basic	$	0.34		$	0.37		$	0.69		$	0.78
Diluted	$	0.34		$	0.36		$	0.68		$	0.77
Weighted average shares outstanding:
Basic	44,306			43,808			44,222			43,705
Diluted	45,002			44,393			44,942			44,390

See notes to condensed consolidated financial statements

2

COHEN & STEERS, INC. AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited)

(in thousands)

	Three Months Ended June 30,						Six Months Ended June 30,
	2013			2012			2013			2012
Net income attributable to common shareholders	$	15,282		$	16,079		$	30,423		$	34,133
Foreign currency translation gain (loss), net of tax of zero	319			(1,953		)	(343		)	(814		)
Net unrealized (loss) gain from available-for-sale securities, net of tax of zero	(863		)	65			933			1,992
Reclassification to statements of operations of (gain) loss from available-for-sale securities, net of tax of zero	(837		)	84			(1,328		)	(603		)
Total comprehensive income attributable to common shareholders	$	13,901		$	14,275		$	29,685		$	34,708

See notes to condensed consolidated financial statements

3

COHEN & STEERS, INC. AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS’ EQUITY AND

REDEEMABLE NONCONTROLLING INTEREST (Unaudited)

Six Months Ended June 30, 2013 and 2012

(in thousands)

	Common Stock		Additional Paid-In Capital			Accumulated Deficit			Accumulated Other Comprehensive Income (Loss), Net of Tax			Treasury Stock			Total Stockholders’ Equity			Redeemable Noncontrolling Interest			Shares of Common Stock, Net
Beginning balance, January 1, 2012	$	462	$	402,573		$	(83,063	)	$	(225	)	$	(89,235	)	$	230,512		$	4,796		43,168
Dividends	—		—			(16,159		)	—			—			(16,159		)	—			—
Issuance of common stock	7		284			—			—			—			291			—			822
Repurchase of common stock	—		—			—			—			(8,389		)	(8,389		)	—			(249	)
Tax benefits associated with restricted stock units—net	—		2,842			—			—			—			2,842			—			—
Issuance of restricted stock units	—		1,112			—			—			—			1,112			—			—
Amortization of restricted stock units—net	—		9,007			—			—			—			9,007			—			—
Net income (loss)	—		—			34,133			—			—			34,133			(848		)	—
Other comprehensive income, net of tax	—		—			—			575			—			575			—			—
Distributions to redeemable noncontrolling interest	—		—			—			—			—			—			(1,121		)	—
Contributions from redeemable noncontrolling interest	—		—			—			—			—			—			30,064			—
Foreign currency translation adjustment on redeemable noncontrolling interest	—		—			—			—			—			—			33			—
Ending balance, June 30, 2012	$	469	$	415,818		$	(65,089	)	$	350		$	(97,624	)	$	253,924		$	32,924		43,741
Beginning balance, January 1, 2013	$	470	$	429,377		$	(117,889	)	$	2,341		$	(97,719	)	$	216,580		$	53,188		43,763
Dividends	—		—			(18,204		)	—			—			(18,204		)	—			—
Issuance of common stock	7		286			—			—			—			293			—			715
Repurchase of common stock	—		—			—			—			(7,902		)	(7,902		)	—			(241	)
Tax benefits associated with restricted stock units—net	—		2,122			—			—			—			2,122			—			—
Issuance of restricted stock units	—		1,140			—			—			—			1,140			—			—
Amortization of restricted stock units—net	—		10,708			—			—			—			10,708			—			—
Forfeitures of vested restricted stock units	—		(10		)	—			—			—			(10		)	—			—
Net income (loss)	—		—			30,423			—			—			30,423			(6,413		)	—
Other comprehensive loss, net of tax	—		—			—			(738		)	—			(738		)	—			—
Contributions from redeemable noncontrolling interest	—		—			—			—			—			—			36,498			—
Redemptions of redeemable noncontrolling interest	—		—			—			—			—			—			(10,664		)	—
Ending balance, June 30, 2013	$	477	$	443,623		$	(105,670	)	$	1,603		$	(105,621	)	$	234,412		$	72,609		44,237

See notes to condensed consolidated financial statements

4

COHEN & STEERS, INC. AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited)

(in thousands)

	Six Months Ended June 30,
	2013			2012
Cash flows from operating activities:
Net income	$	24,010		$	33,285
Adjustments to reconcile net income to net cash used in operating activities:
Stock compensation expense	10,752			9,041
Amortization, deferred commissions	1,575			1,041
Depreciation and amortization	2,687			2,834
Deferred rent	969			(267		)
Loss from trading securities - net	9,339			748
Equity in earnings of affiliates	(109		)	(643		)
Gain from available-for-sale securities - net	(1,328		)	(603		)
Deferred income taxes	1,092			3,316
Foreign currency loss	930			564
Changes in operating assets and liabilities:
Accounts receivable	(2,296		)	(7,986		)
Due from broker	(13,088		)	(7,474		)
Deferred commissions	(1,746		)	(1,415		)
Securities owned	(12,532		)	(47,405		)
Other assets	996			431
Accrued compensation	(12,011		)	(9,239		)
Securities sold but not yet purchased	(14,685		)	1,662
Income tax payable	1,145			1,392
Other liabilities and accrued expenses	3,885			4,245
Net cash used in operating activities	(415		)	(16,473		)
Cash flows from investing activities:
Proceeds from redemptions (purchases) of equity investments	683			(43		)
Purchases of investments, available-for-sale	(5,464		)	(13,904		)
Proceeds from sales of investments, available-for-sale	17,756			17,067
Purchases of property and equipment	(2,826		)	(1,559		)
Net cash provided by investing activities	10,149			1,561
Cash flows from financing activities:
Excess tax benefits associated with restricted stock units	1,981			2,817
Issuance of common stock	250			255
Repurchase of common stock	(7,902		)	(8,389		)
Dividends to stockholders	(17,703		)	(15,747		)
Redemptions of redeemable noncontrolling interest	(10,664		)	(1,121		)
Contributions from redeemable noncontrolling interest	36,498			30,064
Net cash provided by financing activities	2,460			7,879
Net increase (decrease) in cash and cash equivalents	12,194			(7,033		)
Effect of foreign exchange rate changes	(141		)	(518		)
Cash and cash equivalents, beginning of the period	95,412			127,824
Cash and cash equivalents, end of the period	$	107,465		$	120,273

See notes to condensed consolidated financial statements

5

COHEN & STEERS, INC. AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS—(Continued)

(UNAUDITED)

Supplemental disclosures of cash flow information:

For the six months ended June 30, 2013 and 2012, the Company paid taxes, net of tax refunds, of approximately $13,784,000 and $11,644,000, respectively.

Supplemental disclosures of non-cash investing and financing activities:

In connection with its stock incentive plan, for the six months ended June 30, 2013 and 2012, the Company issued fully vested restricted stock units in the amount of $639,000 and $701,000, respectively. For the six months ended June 30, 2013 and 2012, the Company declared restricted stock unit dividend equivalents in the amount of approximately $501,000 and $412,000, respectively.

6

COHEN & STEERS, INC. AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(UNAUDITED)

1. Organization and Description of Business

Cohen & Steers, Inc. (“CNS”) was organized as a Delaware corporation on March 17, 2004. CNS was formed to be the holding company for Cohen & Steers Capital Management, Inc. (“CSCM”), a New York corporation, and to allow for the issuance of common stock to the public.

The condensed consolidated financial statements set forth herein include the accounts of CNS and its direct and indirect subsidiaries. CNS’s wholly-owned subsidiaries are CSCM, Cohen & Steers Securities, LLC (“Securities”), Cohen & Steers Asia Limited and Cohen & Steers UK Limited; Cohen & Steers Europe S.P.R.L. (formerly known as Cohen & Steers Europe S.A.) is a wholly-owned subsidiary of Cohen & Steers UK Limited (collectively, the “Company”). All material intercompany balances and transactions have been eliminated in consolidation.

Through CSCM, a registered investment adviser under the Investment Advisers Act of 1940 (the “Advisers Act”), the Company serves institutional and individual investors around the world. Founded in 1986, the Company is a leading global investment manager with a long history of innovation and a focus on real assets, including real estate, infrastructure and commodities. Its clients include Company-sponsored open-end and closed-end mutual funds, U.S. and non-U.S. pension plans, endowment funds, foundations and subadvised funds for other financial institutions. Through Securities, its registered broker/dealer, the Company provides distribution services for certain of its funds.

2. Basis of Presentation and Significant Accounting Policies

The condensed consolidated financial statements of the Company included herein are unaudited and have been prepared in accordance with the instructions to Form 10-Q pursuant to the rules and regulations of the Securities and Exchange Commission (“SEC”). In the opinion of management, all adjustments, consisting of normal recurring adjustments, necessary for a fair presentation of the interim results have been made. The Company’s condensed consolidated financial statements and the related notes should be read together with the consolidated financial statements and the related notes included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2012.

Accounting Estimates—The preparation of the condensed consolidated financial statements requires management to make certain estimates and assumptions that affect the reported amounts of assets and liabilities and the disclosures of contingent assets and liabilities at the dates of the condensed consolidated financial statements and the reported amounts of revenue and expenses during the reporting periods. Management believes the estimates used in preparing the condensed consolidated financial statements are reasonable and prudent. Actual results could differ from those estimates.

Reclassifications—Certain prior year amounts have been reclassified to conform to the current year presentation. The amounts related to these reclassifications are not material to the Company’s condensed consolidated financial statements.

Consolidation—The Company consolidates operating entities deemed to be voting interest entities if the Company owns a majority of the voting interest. The equity method of accounting is used for investments in non-controlled affiliates in which the Company’s ownership ranges from 20 to 50 percent, or in instances in which the Company is able to exercise significant influence but not control. The Company also consolidates any variable interest entities (“VIEs”) in which the Company is the primary beneficiary. The Company provides for noncontrolling interests in consolidated subsidiaries for which the Company’s ownership is less than 100 percent.

A VIE is an entity in which either (a) the equity investment at risk is not sufficient to permit the entity to finance its own activities without additional financial support or (b) the group of holders of the equity investment at risk lack certain characteristics of a controlling financial interest. The primary beneficiary is the entity that has the obligation to absorb a majority of the expected losses or the right to receive the majority of the residual returns. Investments and redemptions or amendments to the governing documents of the respective entities could affect an entity's status as a VIE or the determination of the primary beneficiary. The Company assesses whether entities in which it has an interest are VIEs upon initial involvement and at each reporting date. The Company assesses whether it is the primary beneficiary of any VIEs identified

7

COHEN & STEERS, INC. AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

(UNAUDITED)

by evaluating its economic interests in the entity held either directly by the Company and its affiliates or indirectly through employees. See Note 4 for further discussion about the Company’s investments.

Cash and Cash Equivalents—Cash equivalents consist of short-term, highly liquid investments, which are readily convertible into cash and have original maturities of three months or less.

Due from Broker—The Company conducts business, primarily through its consolidated seed investments, with brokers for certain of its investment activities. The clearing and custody operations for these investment activities are performed pursuant to agreements with prime brokers. The due from broker balance represents cash and cash equivalents balances at brokers and net receivables and payables for unsettled security transactions.

Investments—Management of the Company determines the appropriate classification of its investments at the time of purchase and re-evaluates such determination at each statement of financial condition date.

Securities owned and securities sold but not yet purchased are classified as trading securities and are measured at fair value based on quoted market prices, market prices obtained from independent pricing services engaged by management or as determined by the Company’s valuation committee. Unrealized gains and losses are recorded as gain (loss) from trading securities—net reported in the Company’s condensed consolidated statements of operations.

Investments classified as equity investments are accounted for using the equity method, under which the Company recognizes its respective share of the investee’s net income or loss for the period. As of June 30, 2013, the Company's equity investments consisted of interests in funds which measure their underlying investments at fair value and report a net asset value on a recurring basis. The carrying amounts of these investments approximate their fair value.

Investments classified as available-for-sale are comprised of equity securities, investment-grade preferred instruments and investments in Company-sponsored open-end and closed-end mutual funds. These investments are carried at fair value based on quoted market prices or market prices obtained from independent pricing services engaged by management, with unrealized gains and losses, net of tax, reported in accumulated other comprehensive income. The Company periodically reviews each individual security position that has an unrealized loss, or impairment, to determine if that impairment is other than temporary. If the Company believes an impairment of a security position is other than temporary, the loss will be recognized in the Company’s condensed consolidated statements of operations. An other than temporary impairment is generally presumed to have occurred if the available-for-sale investment has an unrealized loss continuously for 12 or more months.

From time to time, the funds consolidated by the Company enter into derivative contracts to hedge market and credit risks of the underlying portfolios utilizing options, total return swaps, credit default swaps and futures contracts. These instruments are measured at fair value with gains and losses recorded as gain (loss) from trading securities—net in the Company's condensed consolidated statements of operations. The fair values of these instruments are recorded in other assets or other liabilities and accrued expenses in the Company's condensed consolidated statements of financial condition.

Additionally, from time to time, the Company enters into foreign exchange contracts to hedge its currency exposure related to client receivables. These instruments are measured at fair value with gains and losses recorded in other non-operating income in the Company's condensed consolidated statements of operations. The fair values of these contracts are recorded in other assets or other liabilities and accrued expenses in the Company's condensed consolidated statements of financial condition.

Goodwill and Intangible Assets—Goodwill represents the excess of the cost of the Company’s investment in the net assets of an acquired company over the fair value of the underlying identifiable net assets at the date of acquisition. Goodwill and indefinite lived intangible assets are not amortized but are tested at least annually for impairment by comparing the fair value to their carrying amounts. Finite lived intangible assets are amortized over their useful lives and are tested for impairment whenever events or changes in circumstances indicate that the carrying amount may not be recoverable. See Note 3 for further discussion about the Company’s goodwill and intangible assets.

8

COHEN & STEERS, INC. AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

(UNAUDITED)

Redeemable Noncontrolling Interest—Redeemable noncontrolling interest represents third-party interests in the Company's consolidated entities. This interest is redeemable at the option of the investors and therefore is not treated as permanent equity. Redeemable noncontrolling interest is remeasured at redemption value which approximates the fair value at each reporting period.

Investment Advisory and Administration Fees—The Company earns revenue by providing asset management services to institutional accounts and to Company-sponsored open-end and closed-end mutual funds. This revenue is earned pursuant to the terms of the underlying advisory contract, and is based on a contractual investment advisory fee applied to the assets in the client’s portfolio, net of applicable waivers. The Company also earns revenue from administration fees paid by certain Company-sponsored open-end and closed-end mutual funds, based on the average assets under management of such funds. This revenue is recognized as such fees are earned.

Distribution and Service Fees—Distribution and service fee revenue is earned as the services are performed, based on contractually-predetermined percentages of the average assets under management of the Company-sponsored open-end load mutual funds. Distribution and service fee revenue is recorded gross of any third-party distribution and service fee expense arrangements. The expenses associated with these third-party distribution and service fee arrangements are recorded as incurred. During the first quarter of 2013, the Company made payments of approximately $7.2 million associated with an additional compensation agreement entered into in connection with the offering of Cohen & Steers MLP Income and Energy Opportunity Fund, Inc., a closed end mutual fund. These payments were reflected as expenses in distribution and service fees on the accompanying condensed consolidated statements of operations for the six months ended June 30, 2013.

Portfolio Consulting and Other—The Company earns portfolio consulting and other fees by: i) providing portfolio consulting services in connection with model-based strategies accounts; ii) earning a licensing fee for the use of the Company's proprietary indices; and iii) providing portfolio monitoring services related to a number of unit investment trusts. This revenue is earned pursuant to the terms of the underlying contract, and the fee schedules for these relationships vary based on the type of services the Company provides for each relationship. This revenue is recognized as such fees are earned.

Stock-based Compensation—The Company recognizes compensation expense for the grant-date fair value of awards of equity instruments granted to employees. This expense is recognized over the period during which employees are required to provide service. The Company also estimates forfeitures.

Income Taxes—The Company records the current and deferred tax consequences of all transactions that have been recognized in the condensed consolidated financial statements in accordance with the provisions of the enacted tax laws. Deferred tax assets are recognized for temporary differences that will result in deductible amounts in future years. Deferred tax liabilities are recognized for temporary differences that will result in taxable income in future years. The Company records a valuation allowance, when necessary, to reduce deferred tax assets to an amount that more likely than not will be realized. The effective tax rate for interim periods represents the Company’s best estimate of the effective tax rate expected to be applied to the full fiscal year.

Currency Translation and Transactions—Assets and liabilities of subsidiaries having non-U.S. dollar functional currencies are translated at exchange rates at the applicable condensed consolidated statement of financial condition date. Revenue and expenses are translated at average exchange rates during the period. The gains or losses resulting from translating non-U.S. dollar functional currency into U.S. dollars are included in the Company's condensed consolidated statements of comprehensive income. Gains or losses resulting from non-U.S. dollar currency transactions are included in other non-operating income in the condensed consolidated statements of operations.

Comprehensive Income—The Company reports all changes in comprehensive income in the condensed consolidated statements of comprehensive income. Comprehensive income includes net income or loss attributable to common shareholders, unrealized gains and losses from available-for-sale securities (net of tax), foreign currency translation gains and losses (net of tax) and reclassification to statements of operations of gains and losses from available-for-sale securities (net of tax).

Recently Issued Accounting Pronouncements—In July 2013, the Financial Accounting Standards Board (“FASB”) issued new guidance on the presentation of unrecognized tax benefits when a net operating loss carryforward, a similar tax

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(UNAUDITED)

loss, or a tax credit carryfoward exists. An entity is required to present an unrecognized tax benefit, or a portion of an unrecognized tax benefit, in the financial statements as a reduction to a deferred tax asset for a net operating loss carryforward, a similar tax loss, or a tax credit carryforward unless a net operating loss carryforward, a similar tax loss or a tax credit carryforward is not available as of the reporting date or the entity does not intend to use the deferred tax asset for this purpose (provided that the tax law permits a choice). This new guidance will be effective for the Company's first quarter of 2014. The Company does not anticipate that the adoption of this new guidance will have a material impact on the Company's condensed consolidated financial statements.

In February 2013, the FASB issued new guidance requiring an entity to provide information about the amounts reclassified out of accumulated other comprehensive income by component. An entity is also required to present, either on the face of the statement where net income is presented or in the notes, significant amounts reclassified out of accumulated other comprehensive income by the respective line items of net income. This new guidance was effective for the Company's first quarter of 2013. The adoption of this new guidance did not have a material impact on the Company's condensed consolidated financial statements.

In January 2013, the FASB issued new guidance to clarify the scope of the offsetting disclosures associated with derivative and hedging transactions, including bifurcated embedded derivatives, repurchase agreements and reverse repurchase agreements, and securities borrowing and securities lending transactions. This new guidance was effective for the Company's first quarter of 2013. The adoption of this new guidance did not have a material impact on the Company's condensed consolidated financial statements.

In October 2012, the FASB issued new guidance to make certain technical corrections to the FASB Accounting Standards Codification ("Codification"), which identifies when the use of fair value should be linked to the definition of fair value in Codification Topic 820, Fair Value Measurements and Disclosures (“ASC 820”). The amendments affect various Codification topics and include source literature amendments, guidance clarification and reference corrections and relocated guidance. The amendments that will not have transition guidance were effective upon issuance and the amendments that are subject to the transition guidance were effective for the Company's first quarter of 2013. The adoption of this new guidance did not have a material impact on the Company's condensed consolidated financial statements.

In July 2012, the FASB issued new guidance to simplify how entities test indefinite-lived intangible assets for impairment. The new guidance permits an entity to first assess qualitative factors to determine whether it is more likely than not that the fair value of an indefinite-lived intangible asset is less than its carrying amount as a basis for determining whether it is necessary to perform the second step to measure the amount of the impairment loss, if any. This new guidance was effective for the Company's first quarter of 2013. The adoption of this new guidance did not have a material impact on the Company's condensed consolidated financial statements.

In December 2011, the FASB issued new guidance to create new disclosure requirements about the nature of an entity's rights of offset and related arrangements associated with its financial instruments and derivative instruments. This new guidance was effective for the Company's first quarter of 2013. The adoption of this new guidance did not have a material impact on the Company's condensed consolidated financial statements.

3. Goodwill and Intangible Assets

Goodwill

Goodwill represents the excess of purchase price over the net tangible assets and identifiable intangible assets of an acquired business. At June 30, 2013 and December 31, 2012, goodwill was approximately $19,950,000 and $20,122,000, respectively. The Company’s goodwill decreased by $172,000 in the six months ended June 30, 2013 as a result of foreign currency revaluation.

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(UNAUDITED)

Intangible Assets

The following table details the gross carrying amounts and accumulated amortization for the intangible assets at June 30, 2013 and December 31, 2012 (in thousands):

	Remaining Amortization Period (In Months)	Gross Carrying Amount		Accumulated Amortization			Intangible Assets, Net
June 30, 2013:
Amortized intangible assets:
Client relationships	66	$	1,543	$	(1,047	)	$	496
Non-amortized intangible assets:
Mutual fund management contracts	—	1,250		—			1,250
Total		$	2,793	$	(1,047	)	$	1,746
December 31, 2012:
Amortized intangible assets:
Client relationships	72	$	1,543	$	(1,003	)	$	540
Non-amortized intangible assets:
Mutual fund management contracts	—	1,250		—			1,250
Total		$	2,793	$	(1,003	)	$	1,790

Amortization expense related to the intangible assets was approximately $22,000 for both the three months ended June 30, 2013 and 2012, respectively, and approximately $44,000 for both the six months ended June 30, 2013 and 2012, respectively. Estimated future amortization expense is as follows (in thousands):

Periods Ending December 31,	Estimated Amortization Expense
2013	$	45
2014	89
2015	89
2016	89
2017	89
Thereafter	95
Total	$	496

4. Investments

The following is a summary of the Company's investments as of June 30, 2013 and December 31, 2012 (in thousands):

	June 30, 2013		December 31, 2012
Securities owned	$	99,638	$	97,155
Equity investments	7,532		8,106
Investments, available-for-sale	14,010		25,322

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(UNAUDITED)

Trading and equity investments

The Cohen & Steers Active Commodities Fund, LP (“ACOM”), launched by the Company in April 2013, is structured as a partnership. The Company is the investment manager of ACOM for which it receives a management fee. As of June 30, 2013, the Company owned all of the voting interest in ACOM. Accordingly, the underlying assets and liabilities and results of operations of ACOM have been included in the Company's condensed consolidated financial statements.

Cohen & Steers Global Realty Partners III-TE, L.P. ("GRP-TE"), which had an initial closing in October 2011, is structured as a partnership. The Company is the general partner and investment manager of GRP-TE, for which it receives a management fee and is entitled to receive an incentive distribution, if earned. GRP-TE is a VIE and the Company is not deemed the primary beneficiary. As the general partner, the Company has significant influence over the financial decisions of GRP-TE and therefore records its investment in this fund using the equity method of accounting. The Company's equity interest in GRP-TE represents a seed investment to launch the fund which was made during the first quarter of 2012, adjusted for the Company’s proportionate share of the fund’s earnings. As of June 30, 2013, the fair value of the Company's equity interest in GRP-TE was approximately $96,000. The Company's risk with respect to its investment in GRP-TE is limited to its equity ownership and any uncollected management fees. In conjunction with the launch of GRP-TE, the Company established Cohen & Steers Co-Investment Partnership (“GRP-CIP”), which is used by the Company to fulfill its contractual commitment to co-invest with GRP-TE. See Note 11 for further discussion regarding the Company's co-investment commitment. As of June 30, 2013, the Company owned all of the voting interest in GRP-CIP. Accordingly, the underlying assets and liabilities and results of operations of GRP-CIP have been included in the Company's condensed consolidated financial statements.

During 2008, the Company launched the Cohen & Steers Global Real Estate Long-Short Fund, L.P. (the “Onshore Fund”) which is structured as a partnership. The Company is the general partner and investment manager of the Onshore Fund. As of June 30, 2013, the Company owned the majority of the voting interest in the Onshore Fund. Accordingly, the underlying assets and liabilities and results of operations of the Onshore Fund have been included in the Company's condensed consolidated financial statements with the third party interests classified as redeemable noncontrolling interest. The Onshore Fund had been identified as a VIE and the Company was the primary beneficiary until March 31, 2013. During April 2013, the unaffiliated limited partner redeemed all of its partnership interest from the Onshore Fund, which left the Company, with affiliated employees, owning 100% of the voting interests. As a result, the Onshore Fund is no longer a VIE because the interest holders' voting rights are proportionate with their rights to receive returns or obligation to absorb losses. The Onshore Fund continues to be consolidated.

The following represents the portion of the condensed consolidated statements of financial condition attributable to the consolidated Onshore Fund as of December 31, 2012. As of December 31, 2012, the following assets were available only to settle obligations of the Onshore Fund and these liabilities were only the obligations of the Onshore Fund for which the creditors do not have recourse to the general credit of the Company (in thousands):

	December 31, 2012
Assets:
Securities owned	$	26,002
Due from broker	12,358
Other assets	103
Total assets	$	38,463
Liabilities:
Securities sold but not yet purchased	$	14,685
Other liabilities	335
Total liabilities	$	15,020

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(UNAUDITED)

The Cohen & Steers Global Real Estate Long-Short Offshore Fund, Ltd. (the “Offshore Fund”), launched by the Company in 2008, is structured as a partnership. The Company is the general partner and investment manager of the Offshore Fund for which it receives a management fee and is entitled to receive a performance fee, if earned. The Company determined that the Offshore Fund was not a VIE. The limited partners, unaffiliated with the Company, have the ability to dissolve the fund with a majority vote. As a result, the Company does not have financial control and the Offshore Fund is not consolidated into the Company's condensed consolidated financial statements. As the general partner, the Company has significant influence over the financial decisions of the Offshore Fund and therefore, as of June 30, 2013, records its investment in this fund using the equity method of accounting. The Company’s equity interest in the Offshore Fund represents a seed investment to launch the fund, adjusted for the Company’s proportionate share of the fund’s earnings.

The Cohen & Steers Real Asset Fund (“RAP”), launched by the Company on January 31, 2012, is an open-end mutual fund for which the Company is the investment manager. As of June 30, 2013, the Company had a controlling financial interest in RAP. Accordingly, the underlying assets and liabilities and results of operations of RAP have been included in the Company's condensed consolidated financial statements with the third party interests classified as redeemable noncontrolling interest.

Prior to the sale of the Company's remaining interest in Cohen & Steers Global Listed Infrastructure Fund (“GLIF”) during June 2012, the Company owned the majority of the voting interest in GLIF. Accordingly, the results of operations of GLIF had been included in the Company's condensed consolidated financial statements for the three and six months ended June 30, 2012.

The following is a summary of the fair value of securities owned and equity investments as of June 30, 2013 and December 31, 2012 (in thousands):

	June 30, 2013				December 31, 2012
	Securities Owned		Equity Investments		Securities Owned		Equity Investments
ACOM	$	8,500	$	—	$	—	$	—
GRP-CIP	2,210		—		2,142		—
GRP-TE	—		96		—		89
Offshore Fund	—		7,436		—		8,017
Onshore Fund	413		—		26,002		—
RAP	88,515		—		69,011		—
Total	$	99,638	$	7,532	$	97,155	$	8,106

Gain (loss) from trading securities—net for the three and six months ended June 30, 2013 and 2012 are summarized below (in thousands):

	Three Months Ended June 30,						Six Months Ended June 30,
	2013			2012			2013			2012
ACOM	$	(626	)	$	—		$	(626	)	$	—
GLIF	—			121			—			142
GRP-CIP	(23		)	9			(23		)	9
Onshore Fund	(1,100		)	(282		)	521			1,854
RAP	(9,214		)	(2,317		)	(9,211		)	(2,753		)
Total loss from trading securities—net	$	(10,963	)	$	(2,469	)	$	(9,339	)	$	(748	)

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NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

(UNAUDITED)

Equity in earnings (losses) of affiliates for the three and six months ended June 30, 2013 and 2012 are summarized below (in thousands):

	Three Months Ended June 30,						Six Months Ended June 30,
	2013			2012			2013		2012
GRP-TE	$	—		$	—		$	—	$	—
Offshore Fund	(427		)	(129		)	109		643
Total equity in (losses) earnings of affiliates	$	(427	)	$	(129	)	$	109	$	643

Available-for-sale

The following is a summary of the cost, gross unrealized gains, gross unrealized losses and fair value of investments, available-for-sale as of June 30, 2013 and December 31, 2012 (in thousands):

	June 30, 2013
	Cost		Gross Unrealized Gains		Gross Unrealized Losses < 12 months			Fair Value
Preferred securities	$	4,119	$	33	$	(80	)	$	4,072
Common stocks	8,748		1,267		(285		)	9,730
Company-sponsored mutual funds	199		9		—			208
Total investments, available-for-sale	$	13,066	$	1,309	$	(365	)	$	14,010

	December 31, 2012
	Cost		Gross Unrealized Gains		Gross Unrealized Losses < 12 months			Fair Value
Preferred securities	$	4,351	$	70	$	(82	)	$	4,339
Common stocks	9,490		1,147		(249		)	10,388
Company-sponsored mutual funds	10,100		495		—			10,595
Total investments, available-for-sale	$	23,941	$	1,712	$	(331	)	$	25,322

Unrealized losses on investments, available-for-sale as of June 30, 2013 were generally caused by market conditions. When evaluating whether an unrealized loss on an investment, available-for-sale is other than temporary, the Company reviews such factors as extent and duration of the loss, deterioration in the issuer’s credit quality, reduction or cessation of dividend payments and overall financial strength of the issuer. As of June 30, 2013, the Company determined that it had the ability and intent to hold the remaining investments for which no other-than-temporary impairment has occurred until a recovery of fair value. Accordingly, impairment of these investments is considered temporary.

Sales proceeds, gross realized gains and losses from investments, available-for-sale for the three and six months ended June 30, 2013 and 2012 are summarized below (in thousands):

	Three Months Ended June 30,						Six Months Ended June 30,
	2013			2012			2013			2012
Proceeds from sales	$	13,984		$	5,005		$	17,756		$	17,161
Gross realized gains	1,024			289			1,563			1,142
Gross realized losses	(187		)	(373		)	(235		)	(539		)

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(UNAUDITED)

5. Fair Value

ASC 820 specifies a hierarchy of valuation classifications based on whether the inputs to the valuation techniques used in each valuation classification are observable or unobservable. These classifications are summarized in the three broad levels listed below:

• Level 1—Unadjusted quoted prices for identical instruments in active markets.

• Level 2—Quoted prices for similar instruments in active markets; quoted prices for identical or similar instruments in markets that are not active; and model-derived valuations in which all significant inputs and significant value drivers are observable in active markets.

• Level 3—Valuations derived from valuation techniques in which significant inputs or significant value drivers are unobservable.

Inputs used to measure fair value might fall in different levels of the fair value hierarchy, in which case the Company defaults to the lowest level input that is significant to the fair value measurement in its entirety. These levels are not necessarily an indication of the risk or liquidity associated with the investments. In determining the appropriate levels, the Company performed a detailed analysis of the assets and liabilities that are subject to ASC 820. Transfers among levels, if any, are recorded at the beginning of the reporting period.

Approximately $16,744,000 of securities owned classified as level 2 at December 31, 2012 were transfered to level 1 securities during the six months ended June 30, 2013. These securities were primarily comprised of investments in foreign common stocks valued at foreign exchange closing prices with no adjustments required for subsequent events or market movements.

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NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

(UNAUDITED)

The following table presents fair value measurements as of June 30, 2013 (in thousands):

	Level 1		Level 2		Level 3		Total
Cash equivalents*	$	45,335	$	—	$	—	$	45,335
Due from broker*	$	5,387	$	—	$	—	$	5,387
Securities owned
Preferred securities	$	2,826	$	1,767	$	—	$	4,593
Common stocks	54,835		555		413		55,803
Fixed income securities	—		37,032		—		37,032
Limited partnership interests	—		—		2,210		2,210
Total securities owned	$	57,661	$	39,354	$	2,623	$	99,638
Equity investments **	$	—	$	7,436	$	96	$	7,532
Investments, available-for-sale
Preferred securities	$	980	$	—	$	3,092	$	4,072
Common stocks	9,730		—		—		9,730
Company-sponsored mutual funds	208		—		—		208
Total investments, available-for-sale	$	10,918	$	—	$	3,092	$	14,010
Derivatives - assets
Foreign exchange contracts	$	—	$	159	$	—	$	159
Commodity contracts	826		—		—		826
Total derivatives - assets	$	826	$	159	$	—	$	985
Derivatives - liabilities
Foreign exchange contracts	$	—	$	132	$	—	$	132
Commodity contracts	2,905		—		—		2,905
Total derivatives - liabilities	$	2,905	$	132	$	—	$	3,037

_________________________

*    Comprised of investments in money market funds.

**    Comprised of investments accounted for using the equity method of accounting.

Securities owned classified as level 2 in the above table was primarily comprised of investments in United States Treasury Bills carried at amortized cost, which approximates fair value.

Securities owned classified as level 3 in the above table were comprised of investments in the common stock of a privately held bank holding company and limited partnership interests. The investments in the common stock of a privately held bank holding company were valued by the Company's valuation committee using a market approach which utilized market multiples derived from a set of comparable public companies. The limited partnership interests represent co-investments through GRP-CIP, which along with the Company's interest in GRP-TE, represent the Company's collective ownership interests in limited partnership vehicles that invest in private real estate funds which are valued based on the net asset values of the underlying funds and direct investments in real estate which are generally valued using a discounted cash flow model. The methodology used to value the investments held by GRP-CIP was changed in the current period as the transaction cost was no longer a reasonable approximation of value due to the passage of time.

Equity investments classified as level 2 in the above table represent the carrying amount of partnership interests in the Offshore Fund, which approximates its fair value based on the fund's net asset value. The fund makes long and short investments in listed real estate equity securities to maximize absolute and risk-adjusted returns with modest volatility. The Company has the ability to redeem its investment in the fund monthly at net asset value per share with prior written notice of 30 days and there are no significant restrictions to redemption.

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NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

(UNAUDITED)

Investments, available-for-sale classified as level 3 in the above table were comprised primarily of an auction rate preferred security which was measured at fair value using a third party pricing service which utilizes a combination of a market approach based on the quoted prices for identical or similar instruments in markets that are not active and an income approach in which the expected cash flows of the securities were discounted back to the measurement date. The Company reviews the fair value provided by the pricing service and confirms its understanding of the methodology utilized.

The following table presents fair value measurements as of December 31, 2012 (in thousands):

	Level 1		Level 2		Level 3		Total
Cash equivalents*	$	20,204	$	—	$	—	$	20,204
Due from broker*	$	3,950	$	—	$	—	$	3,950
Securities owned
Preferred securities	$	1,418	$	1,505	$	—	$	2,923
Common stocks	51,354		16,744		1,168		69,266
Fixed income securities	—		22,824		—		22,824
Limited partnership interests	—		—		2,142		2,142
Total securities owned	$	52,772	$	41,073	$	3,310	$	97,155
Equity investments **	$	—	$	8,017	$	89	$	8,106
Investments, available-for-sale
Preferred securities	$	1,254	$	5	$	3,080	$	4,339
Common stocks	10,388		—		—		10,388
Company-sponsored mutual funds	10,595		—		—		10,595
Total investments, available-for-sale	$	22,237	$	5	$	3,080	$	25,322
Derivatives - assets
Equity contracts	$	51	$	52	$	—	$	103
Foreign exchange contracts	—		616		—		616
Commodity contracts	336		—		—		336
Total derivatives - assets	$	387	$	668	$	—	$	1,055
Derivatives - liabilities
Equity contracts	$	4	$	111	$	—	$	115
Commodity contracts	492		—		—		492
Credit contracts	—		20		—		20
Total derivatives - liabilities	$	496	$	131	$	—	$	627
Securities sold but not yet purchased - common stocks	$	14,685	$	—	$	—	$	14,685

_________________________

*    Comprised of investments in money market funds.

**    Comprised of investments accounted for using the equity method of accounting.

Securities owned classified as level 2 in the above table were primarily comprised of investments in United States Treasury Bills carried at amortized cost, which approximates fair value, and foreign common stocks valued at foreign exchange closing prices, adjusted for subsequent significant events or market movements.

Securities owned classified as level 3 in the above table were comprised of investments in the common stock of a privately held bank holding company and limited partnership interests. The investments in the common stock of a privately held bank holding company were valued by the Company's valuation committee using a market approach which utilized market multiples derived from a set of comparable public companies. The limited partnership interest made during 2012 as a co-investment through GRP-CIP, along with the Company's interests in GRP-TE, represent the Company's collective

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(UNAUDITED)

ownership interests in private equity vehicles that invest directly in U.S. commercial real estate and were valued primarily based on the recent transaction value of the underlying investments.

Equity investments classified as level 2 in the above table primarily represent the carrying amount of partnership interests in the Offshore Fund, which approximates its fair value based on the fund's net asset value. The fund makes long and short investments in listed real estate equity securities to maximize absolute and risk-adjusted returns with modest volatility. The Company has the ability to redeem its investment in the fund monthly at net asset value per share with prior written notice of 30 days and there are no significant restrictions to redemption.

Investments, available-for-sale classified as level 3 in the above table were comprised primarily of an auction rate preferred security which was measured at fair value using a third party pricing service which utilizes a combination of a market approach based on the quoted prices for identical or similar instruments in markets that are not active and an income approach in which the expected cash flows of the securities were discounted back to the measurement date. The Company reviews the fair value provided by the pricing service and confirms its understanding of the methodology utilized.

The following table summarizes the changes in level 3 investments measured at fair value on a recurring basis for the three and six months ended June 30, 2013 (in thousands):

	Three Months Ended June 30, 2013										Six Months Ended June 30, 2013
	Securities Owned						Equity Investments		Investments, available-for-sale		Securities Owned						Equity Investments		Investments, available-for-sale
	Common Stocks			Limited Partnership Interests			GRP-TE		Preferred Securities		Common Stocks			Limited Partnership Interests			GRP-TE		Preferred Securities
Balance at beginning of period	$	1,075		$	2,292		$	95	$	3,079	$	1,168		$	2,142		$	89	$	3,080
Purchases / contributions	—			53			1		—		—			203			7		—
Sales / distributions	(419		)	(113		)	—		—		(419		)	(113		)	—		—
Realized losses	(211		)	—			—		—		(211		)	—			—		—
Unrealized (losses) gains *	(32		)	(22		)	—		13		(125		)	(22		)	—		12
Balance at end of period	$	413		$	2,210		$	96	$	3,092	$	413		$	2,210		$	96	$	3,092

_________________________

*    Pertains to unrealized (losses) gains from securities held at June 30, 2013.

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NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

(UNAUDITED)

The following table summarizes the changes in level 3 investments measured at fair value on a recurring basis for the three and six months ended June 30, 2012 (in thousands):

	Three Months Ended June 30, 2012												Six Months Ended June 30, 2012
	Securities Owned						Equity Investments		Investments, available-for-sale				Securities Owned						Equity Investments		Investments, available-for-sale
	Common Stocks				Limited Partnership Interests		GRP-TE		Preferred Securities				Common Stocks				Limited Partnership Interests		GRP-TE		Preferred Securities
Balance at beginning of period	$	1,903			$	811	$	36	$	3,244			$	1,275			$	—	$	—	$	4,150
Purchases / contributions	—				167		7		22				628				978		43		112
Sales / distributions	—				—		—		(38		)		—				—		—		(1,213		)
Realized gains	—				—		—		—				—				—		—		100
Unrealized gains **	68				16		—		578				68				16		—		657
Transfers out of level 3 investments	(628		)	*	—		—		(53		)	^	(628		)	*	—		—		(53		)	^
Balance at end of period	$	1,343			$	994	$	43	$	3,753			$	1,343			$	994	$	43	$	3,753

_________________________

*    Transfered from level 3 to level 2 because observable market data became available for the securities at June 30, 2012.

^ Transfered from level 3 to level 1 because securities started trading actively on an exchange during the six months ended June 30, 2012.

**    Pertains to unrealized gains from securities held at June 30, 2012.

Realized gains (losses) from investments classified as securities owned, equity investments and investments, available-for-sale in the above tables were recorded as gain (loss) from trading securities, equity in earnings (losses) of affiliates and gain (loss) from available-for-sale securities, respectively, in the Company's condensed consolidated statements of operations. Unrealized gains (losses) from investments classified as securities owned and equity investments in the above tables were recorded as gain (loss) from trading securities and equity in earnings (losses) of affiliates, respectively, in the Company's condensed consolidated statements of operations. Unrealized gains (losses) from investments, available-for-sale in the above tables were recorded as unrealized gain (loss) from available-for-sale securities in the Company's condensed consolidated statements of comprehensive income.

Valuation Techniques

In certain instances, debt and equity securities are valued on the basis of prices from an orderly transaction between market participants provided by reputable brokers/dealers or pricing services. In determining the value of a particular investment, pricing services may use information with respect to transactions in such investments, broker quotes, pricing matrices, market transactions in comparable investments and various relationships between investments. As part of its independent price verification process, the Company selectively performs detailed reviews of valuations provided by broker/dealers or pricing services.

Foreign exchange contracts are valued by interpolating a value using the spot foreign exchange rate and forward points (based on the spot rate and currency interest rate differentials), which are all inputs that are observable in active markets (level 2).

In the absence of observable market prices, the Company values its investments using valuation methodologies applied on a consistent basis. For some investments, little market activity may exist; management's determination of fair value is then based on the best information available in the circumstances, and may incorporate management's own assumptions and involves a significant degree of judgment, taking into consideration a combination of internal and external factors. Such investments are valued on a quarterly basis, taking into consideration any changes in key inputs and changes in economic and other relevant conditions, and valuation models are updated accordingly. The valuation process also includes a review by the Company's valuation committee which is primarily comprised of senior members from various departments within the

19

COHEN & STEERS, INC. AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

(UNAUDITED)

Company, including investment management. The valuation committee provides independent oversight of the valuation policies and procedures.

The valuation techniques and significant unobservable inputs used in the fair value measurement of the following level 3 investments as of June 30, 2013 were:

	Fair Value		Fair Value	Significant
	(in thousands)		Methodology	Unobservable Inputs	Range
Common shares of privately-held company	$	413	Market comparable companies	Price / tangible book ratio Liquidity discount	1.07x 30.2%
Limited partnership interests - direct investments in real estate	$	2,101	Discounted cash flows	Discount rate Exit capitalization rates Market rental rates	8.5% - 15% 8% - 9% $14.50 - 21.00 psf

The valuation techniques and significant unobservable inputs used in the fair value measurement of the following level 3 investments as of December 31, 2012 were:

	Fair Value		Fair Value	Significant
	(in thousands)		Methodology	Unobservable Inputs	Range
Common shares of privately-held company	$	1,168	Market comparable companies	Price / tangible book ratio	1.02x - 1.1x
Limited partnership interests	$	2,142	Transaction value	Recent transaction price

Changes in the significant unobservable inputs in the tables above may result in a materially higher or lower fair value measurement. The disclosure in the above tables excludes auction rate preferred securities for which fair value is based on unobservable but non-quantitative inputs. Such items include financial instruments for which the determination of fair value is based on unadjusted quotations provided by a third party pricing service. The disclosure in the above tables also excludes the Company's ownership interests in limited partnership vehicles that invest in private real estate funds which are valued based on the net asset values of the underlying funds.

6. Derivatives

The following is a summary of the notional and fair value of the derivative financial instruments. The notional amount represents the absolute value amount of all outstanding derivative contracts at June 30, 2013 (in thousands):

	June 30, 2013
	Assets				Liabilities
	Notional		Fair Value		Notional		Fair Value
Total foreign exchange contracts	$	10,764	$	159	$	6,433	$	132
Total commodity contracts	23,480		826		50,608		2,905
Total derivatives	$	34,244	$	985	$	57,041	$	3,037

20

COHEN & STEERS, INC. AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

(UNAUDITED)

The following is a summary of the notional and fair value of the derivative financial instruments. The notional amount represents the absolute value amount of all outstanding derivative contracts at December 31, 2012 (in thousands):

	December 31, 2012
	Assets				Liabilities
	Notional		Fair Value		Notional		Fair Value
Total equity contracts	$	9,608	$	103	$	4,942	$	115
Total foreign exchange contracts	13,584		616		—		—
Total commodity contracts	17,817		336		10,954		492
Total credit contracts	—		—		1,500		20
Total derivatives	$	41,009	$	1,055	$	17,396	$	627

As of June 30, 2013, cash included in due from broker and securities included in securities owned in the condensed consolidated statement of financial condition of approximately $2,467,000 and $12,357,000, respectively, were held as collateral for futures. As of December 31, 2012, cash included in due from broker and securities included in securities owned in the condensed consolidated statement of financial condition of approximately $2,161,000 and $849,000, respectively, were held as collateral for futures, total return and credit default swaps.

Gains and losses from derivative financial instruments for the three and six months ended June 30, 2013 and 2012 are summarized below (in thousands):

	Three Months Ended June 30,						Six Months Ended June 30,
	2013			2012			2013			2012
Equity contracts	$	(184	)	$	115		$	(584	)	$	80
Foreign exchange contracts	27			—			1,329			591
Commodity contracts	(3,747		)	(1,022		)	(3,840		)	(1,120		)
Credit contracts	(10		)	18			(21		)	(7		)
Total derivatives	$	(3,914	)	$	(889	)	$	(3,116	)	$	(456	)

7. Earnings Per Share

Basic earnings per share are calculated by dividing net income attributable to common shareholders by the weighted average shares outstanding. Diluted earnings per share are calculated by dividing net income attributable to common shareholders by the total weighted average shares of common stock outstanding and common stock equivalents. Common stock equivalents are comprised of dilutive potential shares from restricted stock unit awards. Common stock equivalents are excluded from the computation if their effect is anti-dilutive. Diluted earnings per share are computed using the treasury stock method.

No anti-dilutive common stock equivalents were excluded from the computation for the three and six months ended June 30, 2013 and 2012.

21

COHEN & STEERS, INC. AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

(UNAUDITED)

The following is a reconciliation of the income and share data used in the basic and diluted earnings per share computations for the three and six months ended June 30, 2013 and 2012 (in thousands, except per share data):

	Three Months Ended June 30,				Six Months Ended June 30,
	2013		2012		2013		2012
Net income	$	8,509	$	15,027	$	24,010	$	33,285
Less: Net loss attributable to redeemable noncontrolling interest	6,773		1,052		6,413		848
Net income attributable to common shareholders	$	15,282	$	16,079	$	30,423	$	34,133
Basic weighted average shares outstanding	44,306		43,808		44,222		43,705
Dilutive potential shares from restricted stock units	696		585		720		685
Diluted weighted average shares outstanding	45,002		44,393		44,942		44,390
Basic earnings per share attributable to common shareholders	$	0.34	$	0.37	$	0.69	$	0.78
Diluted earnings per share attributable to common shareholders	$	0.34	$	0.36	$	0.68	$	0.77

8. Income Taxes

The provision for income taxes for the six months ended June 30, 2013 includes U.S. federal, state, local and foreign taxes at an approximate effective tax rate of 37%, which included discrete items, the most significant of which was attributable to the launch costs of Cohen & Steers MLP Income and Energy Opportunity Fund, Inc., a closed-end mutual fund. Excluding the discrete items, the effective tax rate for the six months ended June 30, 2013 was approximately 38%. The effective tax rate for the three months ended June 30, 2013 was approximately 39%. The effective tax rate for each of the three and six months ended June 30, 2012 was approximately 36%. The Company expects the tax rate for the full year 2013 to approximate 38%, excluding discrete items.

Deferred income taxes represent the tax effects of the temporary differences between book and tax bases and are measured using enacted tax rates that will be in effect when such items are expected to reverse. The Company's net deferred tax asset is primarily comprised of future income tax deductions attributable to the delivery of unvested restricted stock units. The Company records a valuation allowance, when necessary, to reduce deferred tax assets to an amount that more likely than not will be realized.

9. Regulatory Requirements

Securities, a registered broker/dealer in the U.S., is subject to the SEC’s Uniform Net Capital Rule 15c3-1 (the “Rule”), which requires that broker/dealers maintain a minimum level of net capital, as defined. As of June 30, 2013, Securities had net capital of approximately $1,180,000, which exceeded its requirements by approximately $1,121,000. The Rule also provides that equity capital may not be withdrawn or cash dividends paid if the resulting net capital of a broker/dealer is less than the amount required under the Rule and requires prior notice to the SEC for certain withdrawals of capital.

Securities does not carry customer accounts and is exempt from the SEC’s Rule 15c3-3 pursuant to provisions (k)(1) of such rule.

The non-U.S. subsidiaries of the Company (collectively, the “Foreign Regulated Entities”) are regulated outside the U.S. by the Hong Kong Securities and Futures Commission, the United Kingdom Financial Conduct Authority (formerly known as the United Kingdom Financial Securities Authority), and the Belgium Financial Services and Markets Authority. As of June 30, 2013, the Foreign Regulated Entities had aggregate regulatory capital of approximately $51,066,000, which exceeded requirements by approximately $49,566,000. In February 2013, the Company completed a reorganization of Cohen & Steers Europe S.P.R.L. which resulted in funds moving to the U.S.

22

COHEN & STEERS, INC. AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

(UNAUDITED)

10. Related Party Transactions

The Company is an investment adviser to, and has administrative agreements with, affiliated open-end and closed-end mutual funds for which certain employees are officers and/or directors. The following table sets forth the amount of revenue the Company earned from these affiliated funds for the three and six months ended June 30, 2013 and 2012 (in thousands):

	Three Months Ended June 30,				Six Months Ended June 30,
	2013		2012		2013		2012
Investment advisory and administration fees	$	49,054	$	37,492	$	93,121	$	72,846
Distribution and service fees	3,741		2,747		7,175		5,248
	$	52,795	$	40,239	$	100,296	$	78,094

For the six months ended June 30, 2012, the Company had investment advisory agreements with certain affiliated closed-end mutual funds, pursuant to which the Company contractually waived approximately $299,000 of advisory fees it was otherwise entitled to receive. There were no such fees waived for the three and six months ended June 30, 2013 or for the three months ended June 30, 2012. These investment advisory agreements contractually require the Company to waive a portion of the advisory fees the Company otherwise would charge for up to 10 years from the respective fund's inception date. The board of directors of these mutual funds must approve the renewal of the advisory agreements each year, including any reduction in advisory fee waivers scheduled to take effect during that year. As of June 30, 2013, there were no additional scheduled reductions in advisory fee waivers for any fund.

Sales proceeds, gross realized gains and dividend income from investments, available-for-sale in Company-sponsored mutual funds for the three and six months ended June 30, 2013 and 2012 are summarized below (in thousands):

	Three Months Ended June 30,				Six Months Ended June 30,
	2013		2012		2013		2012
Proceeds from sales	$	10,613	$	—	$	10,613	$	103
Gross realized gains	613		—		613		4
Dividend income	—		—		—		2

The Company has agreements with certain affiliated open-end and closed-end mutual funds to reimburse certain fund expenses. For the three months ended June 30, 2013 and 2012, expenses of approximately $2,663,000 and $2,000,000, respectively, were incurred by the Company pursuant to these agreements and are included in general and administrative expenses. For the six months ended June 30, 2013 and 2012, expenses of approximately $4,724,000 and $3,521,000, respectively, were incurred.

Included in accounts receivable at June 30, 2013 and December 31, 2012 are receivables due from Company-sponsored mutual funds of approximately $19,451,000 and $18,133,000, respectively.

11. Commitments and Contingencies

From time to time, the Company is involved in legal matters relating to claims arising in the ordinary course of business. There are currently no such matters pending that the Company believes could have a material adverse effect on its business or financial condition.

The Company periodically commits to fund a portion of the equity in certain of its sponsored investment products. The Company has committed to co-invest up to $5.1 million in GRP-TE, and such co-investment will be invested with GRP-TE for up to 12 years through the life of the fund. As of June 30, 2013, the Company has funded approximately $2.3 million with respect to this commitment. The actual timing of the funding of this commitment is currently unknown, as the drawdown of the Company's commitment is contingent on the timing of drawdowns by the underlying funds and co-investments in which

23

COHEN & STEERS, INC. AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

(UNAUDITED)

GRP invests. This unfunded commitment was not recorded on the Company's condensed consolidated statement of financial condition as of June 30, 2013.

12. Concentration of Credit Risk

The Company's cash is principally on deposit with three major financial institutions. The Company is subject to credit risk should these financial institutions be unable to fulfill their obligations.

13. Subsequent Events

The Company has evaluated the need for disclosures and/or adjustments resulting from subsequent events through the date the financial statements were issued. Other than the items described below, the Company determined that there were no additional subsequent events that necessitated disclosures and/or adjustments.

On August 7, 2013, CNS declared quarterly dividend on its common stock in the amount of $0.20 per share. The dividend will be payable on September 27, 2013 to stockholders of record at the close of business on September 6, 2013.

24

Item 2.Management’s Discussion and Analysis of Financial Condition and Results of Operations

Set forth on the following pages is management’s discussion and analysis of our financial condition and results of operations for the three and six months ended June 30, 2013 and June 30, 2012. Such information should be read in conjunction with our condensed consolidated financial statements together with the notes to the condensed consolidated financial statements. The interim condensed consolidated financial statements of the Company, included herein, are unaudited. When we use the terms “Cohen & Steers,” the “Company,” “we,” “us,” and “our,” we mean Cohen & Steers, Inc., a Delaware corporation, and its consolidated subsidiaries.

Overview

Founded in 1986, we are a leading global investment manager with a long history of innovation and a focus on real assets, including real estate, infrastructure and commodities. We serve institutional and individual investors around the world.

25

Assets Under Management

We manage three types of accounts: institutional accounts, open-end mutual funds and closed-end mutual funds.

The following table sets forth information regarding the net flows and appreciation/(depreciation) of assets under management for the periods presented (in millions):

	Three Months Ended June 30,						Six Months Ended June 30,
	2013			2012			2013			2012
Institutional Accounts
Assets under management, beginning of period	$	26,081		$	26,608		$	24,850		$	25,380
Inflows	277			296			523			1,366
Outflows	(1,366		)	(1,785		)	(1,956		)	(4,218		)
Net outflows	(1,089		)	(1,489		)	(1,433		)	(2,852		)
Market (depreciation) appreciation	(454		)	480			1,121			3,071
Total (decrease) increase	(1,543		)	(1,009		)	(312		)	219
Assets under management, end of period	$	24,538		$	25,599		$	24,538		$	25,599
Average assets under management for period	$	26,082		$	25,496		$	25,727		$	25,690
Open-End Mutual Funds
Assets under management, beginning of period	$	14,447		$	11,588		$	12,962		$	9,619
Inflows	1,789			1,077			3,297			2,759
Outflows	(1,430		)	(784		)	(2,279		)	(1,528		)
Net inflows	359			293			1,018			1,231
Market (depreciation) appreciation	(364		)	233			462			1,264
Total (decrease) increase	(5		)	526			1,480			2,495
Assets under management, end of period	$	14,442		$	12,114		$	14,442		$	12,114
Average assets under management for period	$	15,019		$	11,543		$	14,404		$	11,055
Closed-End Mutual Funds
Assets under management, beginning of period	$	8,793		$	6,694		$	7,985		$	6,285
Inflows	281			—			739			—
Outflows	—			—			—			—
Inflows	281			—			739			—
Market (depreciation) appreciation	(231		)	(16		)	119			393
Total increase (decrease)	50			(16		)	858			393
Assets under management, end of period	$	8,843		$	6,678		$	8,843		$	6,678
Average assets under management for period	$	9,053		$	6,608		$	8,652		$	6,583
Total
Assets under management, beginning of period	$	49,321		$	44,890		$	45,797		$	41,284
Inflows	2,347			1,373			4,559			4,125
Outflows	(2,796		)	(2,569		)	(4,235		)	(5,746		)
Net (outflows) inflows	(449		)	(1,196		)	324			(1,621		)
Market (depreciation) appreciation	(1,049		)	697			1,702			4,728
Total (decrease) increase	(1,498		)	(499		)	2,026			3,107
Assets under management, end of period	$	47,823		$	44,391		$	47,823		$	44,391
Average assets under management for period	$	50,154		$	43,647		$	48,783		$	43,328

26

Assets under management were $47.8 billion at June 30, 2013, compared with $44.4 billion at June 30, 2012. The increase was due to market appreciation of $4.1 billion, partially offset by net outflows of $644 million during the prior twelve month period.

Average assets under management were $50.2 billion in the three months ended June 30, 2013, an increase of 15% from $43.6 billion in the three months ended June 30, 2012. Average assets under management were $48.8 billion in the six months ended June 30, 2013, an increase of 13% from $43.3 billion in the six months ended June 30, 2012.

Institutional accounts

Institutional accounts assets under management were $24.5 billion at June 30, 2013, a decrease of 4% from $25.6 billion at June 30, 2012. The decrease in assets under management was due to net outflows of $3.7 billion, primarily from global/international real estate strategies associated with subadvisory relationships, partially offset by market appreciation of $2.6 billion during the prior twelve month period.

Average assets under management for institutional accounts were $26.1 billion in the three months ended June 30, 2013, an increase of 2% from $25.5 billion in the three months ended June 30, 2012. Average assets under management for institutional accounts were $25.7 billion in both of the six months ended June 30, 2013 and 2012.

Net outflows for institutional accounts were $1.1 billion in the three months ended June 30, 2013, compared with $1.5 billion in the three months ended June 30, 2012. Gross inflows were $277 million in the three months ended June 30, 2013, compared with $296 million in the three months ended June 30, 2012. Gross outflows totaled $1.4 billion in the three months ended June 30, 2013, compared with $1.8 billion in the three months ended June 30, 2012. Market depreciation was $454 million in the three months ended June 30, 2013, compared with market appreciation of $480 million in the three months ended June 30, 2012.

Net outflows for institutional accounts were $1.4 billion in the six months ended June 30, 2013, compared with $2.9 billion in the six months ended June 30, 2012. Gross inflows were $523 million in the six months ended June 30, 2013, compared with $1.4 billion in the six months ended June 30, 2012. Gross outflows totaled $2.0 billion in the six months ended June 30, 2013, compared with $4.2 billion in the six months ended June 30, 2012. Market appreciation was $1.1 billion in the six months ended June 30, 2013, compared with $3.1 billion in the six months ended June 30, 2012.

Open-end mutual funds

Open-end mutual fund assets under management were $14.4 billion at June 30, 2013, an increase of 19% from $12.1 billion at June 30, 2012. The increase in assets under management was due to net inflows of $1.3 billion, primarily from preferred securities and U.S. real estate strategies and market appreciation of $1.1 billion during the prior twelve month period.

Average assets under management for open-end mutual funds were $15.0 billion in the three months ended June 30, 2013, an increase of 30% from $11.5 billion in the three months ended June 30, 2012. Average assets under management for open-end mutual funds were $14.4 billion in the six months ended June 30, 2013, an increase of 30% from $11.1 billion in the six months ended June 30, 2012.

Net inflows for open-end mutual funds were $359 million in the three months ended June 30, 2013, compared with $293 million in the three months ended June 30, 2012. Gross inflows were $1.8 billion in the three months ended June 30, 2013, compared with $1.1 billion in the three months ended June 30, 2012. Gross outflows totaled $1.4 billion in the three months ended June 30, 2013, compared with $784 million in the three months ended June 30, 2012. Market depreciation was $364 million in the three months ended June 30, 2013, compared with market appreciation of $233 million in the three months ended June 30, 2012.

Net inflows for open-end mutual funds were $1.0 billion in the six months ended June 30, 2013, compared with $1.2 billion in the six months ended June 30, 2012. Gross inflows were $3.3 billion in the six months ended June 30, 2013, compared with $2.8 billion in the six months ended June 30, 2012. Gross outflows totaled $2.3 billion in the six months ended June 30, 2013, compared with $1.5 billion in the six months ended June 30, 2012. Market appreciation was $462 million in the six months ended June 30, 2013, compared with $1.3 billion in the six months ended June 30, 2012.

27

Closed-end mutual funds

Closed-end mutual funds assets under management were $8.8 billion at June 30, 2013, an increase of 32% from $6.7 billion at June 30, 2012. The increase in assets under management was due to net inflows of $1.7 billion, primarily from the launches of Cohen & Steers Limited Duration Preferred and Income Fund, Inc. ("LDP") and Cohen & Steers MLP Income and Energy Opportunity Fund, Inc. ("MIE"), and market appreciation of $422 million during the prior twelve month period.

Average assets under management for closed-end mutual funds were $9.1 billion in the three months ended June 30, 2013, an increase of 37% from $6.6 billion in the three months ended June 30, 2012. Average assets under management for closed-end mutual funds were $8.7 billion in the six months ended June 30, 2013, an increase of 31% from $6.6 billion in the six months ended June 30, 2012.

Closed-end mutual funds had inflows of $281 million in the three months ended June 30, 2013 from additional use of the credit facility and the exercise of the underwriters' over-allotment option for MIE. Market depreciation was $231 million in the three months ended June 30, 2013, compared with $16 million in the three months ended June 30, 2012.

Closed-end mutual funds had inflows of $739 million in the six months ended June 30, 2013 from the launch of MIE. Market appreciation was $119 million in the six months ended June 30, 2013, compared with $393 million in the six months ended June 30, 2012.

Results of Operations

Three Months Ended June 30, 2013 compared with Three Months Ended June 30, 2012

	Three Months Ended June 30,
(in thousands)	2013			2012
Results of operations
Total revenue	$	77,796		$	67,432
Total expenses	(49,239		)	(41,368		)
Total non-operating loss	(10,178		)	(1,992		)
Income before provision for income taxes	$	18,379		$	24,072

Revenue

Total revenue increased 15% to $77.8 million in the three months ended June 30, 2013 from $67.4 million in the three months ended June 30, 2012. This increase was primarily attributable to higher investment advisory and administration fees resulting from higher average assets under management. Average assets under management in the three months ended June 30, 2013 were $50.2 billion compared with $43.6 billion in the three months ended June 30, 2012.

In the three months ended June 30, 2013, total investment advisory and administration revenue from institutional accounts decreased 4% to $21.3 million from $22.2 million in the three months ended June 30, 2012. The decrease in institutional account revenue was primarily attributable to a lower effective fee rate, partially offset by higher average assets under management. Average assets under management for institutional accounts in the three months ended June 30, 2013 were $26.1 billion compared with $25.5 billion in the three months ended June 30, 2012.

In the three months ended June 30, 2013, total investment advisory and administration revenue from open-end mutual funds increased 27% to $29.8 million from $23.5 million in the three months ended June 30, 2012. The increase in open-end mutual fund revenue was attributable to higher average assets under management resulting from net inflows of $1.3 billion, primarily from preferred securities and U.S. real estate strategies and market appreciation of $1.1 billion during the prior twelve month period. Average assets under management for open-end mutual funds in the three months ended June 30, 2013 were $15.0 billion compared with $11.5 billion in the three months ended June 30, 2012.

In the three months ended June 30, 2013, total investment advisory and administration revenue from closed-end mutual funds increased 37% to $19.2 million from $14.0 million in the three months ended June 30, 2012. The increase in closed-end mutual fund revenue was attributable to higher average assets under management resulting from net inflows of $1.7 billion, primarily from the launches of LDP and MIE, and market appreciation of $422 million during the prior twelve month

28

period. Average assets under management for closed-end mutual funds in the three months ended June 30, 2013 were $9.1 billion compared with $6.6 billion in the three months ended June 30, 2012.

In the three months ended June 30, 2013, total distribution and service fee revenue increased 36% to $3.7 million from $2.7 million in the three months ended June 30, 2012. The increase was primarily due to higher levels of average assets under management in 2013.

In the three months ended June 30, 2013, total portfolio consulting and other revenue decreased 26% to $3.7 million from $5.0 million in the three months ended June 30, 2012. The decrease was primarily attributable to lower average assets under advisement from model-based strategies.

Expenses

Total operating expenses increased 19% to $49.2 million in the three months ended June 30, 2013 from $41.4 million in the three months ended June 30, 2012, primarily due to increases in distribution and service fees, general and administrative expenses and employee compensation and benefits.

Distribution and service fee expenses increased 48% to $9.7 million in the three months ended June 30, 2013 from $6.5 million in the three months ended June 30, 2012. The increase was primarily due to higher average assets under management in certain of our open-end load and no-load mutual funds and additional expenses related to the exercise of the underwriters' over-allotment option for MIE.

General and administrative expenses increased 26% to $12.5 million in the three months ended June 30, 2013 from $9.9 million in the three months ended June 30, 2012. The increase was primarily due to higher professional fees of approximately $964,000, higher rent of approximately $726,000 resulting from the extension of the lease for our corporate headquarters in New York City and higher information technology costs of approximately $389,000.

Employee compensation and benefits increased 9% to $24.9 million in the three months ended June 30, 2013 from $22.9 million in the three months ended June 30, 2012, primarily due to higher amortization of restricted stock units of approximately $1.2 million and higher salaries of approximately $762,000.

Non-operating Loss

Non-operating loss increased to $10.2 million in the three months ended June 30, 2013 from $2.0 million in the three months ended June 30, 2012, primarily due to net losses from our seed investments.

Income Taxes

We recorded an income tax expense of $9.9 million in the three months ended June 30, 2013, compared with $9.0 million in the three months ended June 30, 2012. The provision for income taxes in the three months ended June 30, 2013 included U.S. federal, state, local and foreign taxes at an approximate effective tax rate of 39%, which included the cumulative effect to adjust our estimated tax rate for the full year 2013. The effective tax rate for the three months ended June 30, 2012 was approximately 36%. We expect our tax rate for the full year 2013 to approximate 38%, excluding discrete items.

Six Months Ended June 30, 2013 compared with Six Months Ended June 30, 2012

	Six Months Ended June 30,
(in thousands)	2013			2012
Results of operations
Total revenue	$	150,255		$	131,162
Total expenses	(100,988		)	(79,702		)
Total non-operating (loss) income	(7,252		)	1,025
Income before provision for income taxes	$	42,015		$	52,485

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Revenue

Total revenue increased 15% to $150.3 million in the six months ended June 30, 2013 from $131.2 million in the six months ended June 30, 2012. This increase was primarily attributable to higher investment advisory and administration fees resulting from higher average assets under management. Average assets under management in the six months ended June 30, 2013 were $48.8 billion compared with $43.3 billion in the six months ended June 30, 2012.

In the six months ended June 30, 2013, total investment advisory and administration revenue from institutional accounts decreased 5% to $42.6 million from $45.0 million in the six months ended June 30, 2012. The decrease in institutional account revenue was primarily attributable to a lower effective fee rate. Average assets under management for institutional accounts in both of the six months ended June 30, 2013 and 2012 were $25.7 billion.

In the six months ended June 30, 2013, total investment advisory and administration revenue from open-end mutual funds increased 26% to $56.9 million from $45.3 million in the six months ended June 30, 2012. The increase in open-end mutual fund revenue was attributable to higher levels of average assets under management. Average assets under management for open-end mutual funds in the six months ended June 30, 2013 were $14.4 billion compared with $11.1 billion in the six months ended June 30, 2012.

In the six months ended June 30, 2013, total investment advisory and administration revenue from closed-end mutual funds increased 31% to $36.2 million from $27.6 million in the six months ended June 30, 2012. The increase in closed-end mutual fund revenue was attributable to higher levels of average assets under management resulting primarily from the launches of LDP and MIE. Average assets under management for closed-end mutual funds in the six months ended June 30, 2013 were $8.7 billion compared with $6.6 billion in the six months ended June 30, 2012.

In the six months ended June 30, 2013, total distribution and service fee revenue increased 37% to $7.2 million from $5.2 million in the six months ended June 30, 2012. The increase was primarily due to higher levels of average assets under management in 2013.

In the six months ended June 30, 2013, total portfolio consulting and other revenue decreased 9% to $7.3 million from $8.1 million in the six months ended June 30, 2012. The decrease was primarily attributable to lower average assets under advisement from model-based strategies.

Expenses

Total operating expenses increased 27% to $101.0 million in the six months ended June 30, 2013 from $79.7 million in the six months ended June 30, 2012, primarily due to increases in distribution and service fees, general and administrative expenses and employee compensation and benefits.

Distribution and service fee expenses increased 94% to $24.8 million in the six months ended June 30, 2013 from $12.8 million in the six months ended June 30, 2012. The six months ended June 30, 2013 results included approximately $7.2 million of distribution costs associated with the launch of MIE. After adjusting for these costs, distribution and service fee expenses would have been $17.6 million. The increase in distribution and service fee expenses was primarily due to higher average assets under management in certain of our open-end load and no-load mutual funds and additional expenses related to the exercise of the underwriters' over-allotment option for MIE during the three months ended June 30, 2013.

General and administrative expenses increased 28% to $23.7 million in the six months ended June 30, 2013 from $18.5 million in the six months ended June 30, 2012. The increase was primarily due to higher professional fees of approximately $2.2 million, higher rent of approximately $1.4 million resulting from the extension of the lease for our corporate headquarters in New York City and higher information technology costs of approximately $672,000.

Employee compensation and benefits increased 8% to $48.3 million in the six months ended June 30, 2013 from $44.6 million in the six months ended June 30, 2012, primarily due to higher amortization of restricted stock units of approximately $1.6 million and higher salaries of approximately $990,000.

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Non-operating (Loss) Income

Non-operating loss was $7.3 million in the six months ended June 30, 2013, compared with non-operating income of $1.0 million in the six months ended June 30, 2012. The decrease was primarily due to net losses from our seed investments.

Income Taxes

We recorded an income tax expense of $18.0 million in the six months ended June 30, 2013, compared with $19.2 million in the six months ended June 30, 2012. The provision for income taxes in the six months ended June 30, 2013 included U.S. federal, state, local and foreign taxes at an approximate effective tax rate of 37%, which included discrete items, the most significant of which was attributable to the launch costs for MIE. Excluding the discrete items, the effective tax rate for the six months ended June 30, 2013 was approximately 38%. The effective tax rate for the six months ended June 30, 2012 was approximately 36%. We expect our tax rate for the full year 2013 to approximate 38%, excluding discrete items.

Liquidity and Capital Resources

Our investment advisory business does not require us to maintain significant capital balances. Our current financial condition is highly liquid, with a significant amount of our assets comprised of cash and cash equivalents, securities owned, investments, available-for-sale and accounts receivable. Our cash flows generally result from the operating activities of our business, with investment advisory and administrative fees being the most significant contributor. Cash and cash equivalents, equity investments, investments, available-for-sale and accounts receivable were 49% and 50% of total assets as of June 30, 2013 and December 31, 2012, respectively, excluding investments classified as level 3 in accordance with the Accounting Standard Codification (the “Codification”) Topic 820, Fair Value Measurements and Disclosures (“ASC 820”).

Included in equity investments was approximately $7.4 million and $8.0 million invested in our offshore global real estate long-short fund which was classified as level 2 at June 30, 2013 and December 31, 2012, respectively. See Note 4 and 5 to the condensed consolidated financial statements relating to investments.

Cash and cash equivalents increased by $12.2 million, excluding the effect of foreign exchange rate changes, in the six months ended June 30, 2013. Net cash used in operating activities was $415,000 in the six months ended June 30, 2013. Net cash of $10.1 million was provided by investing activities, from proceeds from sales of investments, available-for-sale in the amount of $17.8 million and proceeds from redemption of equity investments of $683,000, partially offset by purchases of $5.5 million of investments, available-for-sale and purchases of $2.8 million of property and equipment. Net cash of $2.5 million was provided by financing activities, primarily from contributions from redeemable noncontrolling interest of $36.5 million and excess tax benefits associated with the delivery of restricted stock units of $2.0 million, partially offset by dividends to stockholders of $17.7 million, redemptions of redeemable noncontrolling interest of $10.7 million and repurchases of common stock of $7.9 million to satisfy employee withholding tax obligations on the delivery of restricted stock units.

Cash and cash equivalents decreased by $7.0 million, excluding the effect of foreign exchange rate changes, in the six months ended June 30, 2012. Net cash used in operating activities was $16.5 million in the six months ended June 30, 2012. Net cash of $1.6 million was provided by investing activities, primarily from proceeds from sales of investments, available-for-sale in the amount of $17.1 million, partially offset by purchases of $13.9 million of investments, available-for-sale and purchases of $1.6 million of property and equipment. Net cash of $7.9 million was provided by financing activities, primarily from contributions from redeemable noncontrolling interest of $30.1 million and excess tax benefits associated with the delivery of restricted stock units of $2.8 million, partially offset by dividends paid to stockholders of $15.7 million, repurchases of common stock of $8.4 million to satisfy employee withholding tax obligations on the delivery of restricted stock units, and redemptions of redeemable noncontrolling interest of $1.1 million.

It is our policy to continuously monitor and evaluate the adequacy of our capital. We have consistently maintained net capital in excess of the regulatory requirements for our broker/dealer, as prescribed by the Securities and Exchange Commission (“SEC”). At June 30, 2013, we exceeded our minimum regulatory capital requirements by approximately $1.1 million. The SEC’s Uniform Net Capital Rule 15c3-1 imposes certain requirements that may have the effect of prohibiting a broker/dealer from distributing or withdrawing capital and requiring prior notice to the SEC for certain withdrawals of capital. Our non-U.S. subsidiaries are regulated outside the U.S. by the Hong Kong Securities and Future Commission, the United Kingdom Financial Conduct Authority (formerly known as the United Kingdom Financial Securities Authority), and the Belgium Financial Services and Markets Authority. At June 30, 2013, our non-U.S. subsidiaries exceeded their aggregate

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minimum regulatory requirements by approximately $49.6 million. We believe that our cash flows from operations will be more than adequate to meet our anticipated capital requirements and other obligations as they become due.

Included in cash and cash equivalents were approximately $61.4 million held by our foreign subsidiaries as of June 30, 2013, including amounts held by Cohen & Steers Europe S.P.R.L. ("CSE") (formerly known as Cohen & Steers Europe S.A.). In February 2013, we completed a reorganization of CSE. This transaction did not impact the accounting for income taxes as of June 30, 2013. Other than as mentioned above, it is our current intention to permanently reinvest funds held by our foreign subsidiaries outside of the U.S. We believe that our cash and cash equivalents and short term investments held in the U.S. are more than sufficient to cover our working capital needs in the U.S.

We periodically commit to fund a portion of the equity in certain of our sponsored investment products. We have committed to co-invest up to $5.1 million in Cohen & Steers Global Realty Partners III-TE, L.P. ("GRP-TE"), a limited partnership that had an initial closing on October 4, 2011. As of June 30, 2013, we have funded approximately $2.3 million with respect to this commitment. Our investment with GRP-TE is illiquid and will be invested for up to 12 years through the life of the fund. The actual timing of the funding of this commitment is currently unknown, as the drawdown of our commitment is contingent on the timing of drawdowns by the underlying funds and co-investments in which GRP-TE invests. The unfunded portion of this commitment was not recorded on our condensed consolidated statement of financial condition as of June 30, 2013.

Contractual Obligations and Contingencies

We have contractual obligations to make future payments in connection with our non-cancelable operating lease agreements for office space. There were no material capital lease obligations as of June 30, 2013. The following summarizes our contractual obligations as of June 30, 2013 (in thousands):

	2013		2014		2015		2016		2017		2018 and after		Total
Operating leases	$	4,102	$	7,873	$	8,965	$	8,729	$	8,447	$	55,768	$	93,884

Off-Balance Sheet Arrangements

We do not invest in any off-balance sheet vehicles that provide liquidity, capital resources, market or credit risk support, or engage in any leasing activities that expose us to any liability that is not reflected in our condensed consolidated financial statements.

Critical Accounting Policies and Estimates

The preparation of our condensed consolidated financial statements in accordance with accounting principles generally accepted in the United States of America requires us to make certain estimates and assumptions that affect the reported amounts of assets and liabilities and the disclosure of contingent assets and liabilities at the dates of the condensed consolidated financial statements and the reported amounts of revenue and expenses during the reporting periods. We believe the estimates used in preparing the condensed consolidated financial statements are reasonable and prudent. Actual results could differ from those estimates.

A thorough understanding of our accounting policies is essential when reviewing our reported results of operations and our financial position. Management considers the following accounting policies critical to an informed review of our condensed consolidated financial statements. For a summary of these and additional accounting policies, see the notes to the annual audited consolidated financial statements in our Annual Report on Form 10-K for the year ended December 31, 2012.

Consolidation

We consolidate operating entities deemed to be voting interest entities if we own a majority of the voting interest. The equity method of accounting is used for investments in non-controlled affiliates in which our ownership ranges from 20 to 50 percent, or in instances in which we are able to exercise significant influence but not control. We also consolidate any variable interest entities (“VIEs”) in which we are the primary beneficiary. We provide for noncontrolling interests in consolidated subsidiaries for which our ownership is less than 100 percent.

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A VIE is an entity in which either (a) the equity investment at risk is not sufficient to permit the entity to finance its own activities without additional financial support or (b) the group of holders of the equity investment at risk lack certain characteristics of a controlling financial interest. The primary beneficiary is the entity that has the obligation to absorb a majority of the expected losses or the right to receive the majority of the residual returns. Investments and redemptions or amendments to the governing documents of the respective entities could affect an entity's status as a VIE or the determination of the primary beneficiary. We assess whether entities in which we have an interest are VIEs upon initial involvement and at each reporting date. We assess whether we are the primary beneficiary of any VIEs identified by evaluating our economic interests in the entity held either directly by us and our affiliates or indirectly through employees. See Note 4 for further discussion about our investments.

Investments

We determine the appropriate classification of our investments at the time of purchase and re-evaluate such determination at each statement of financial condition date.

Securities owned and securities sold but not yet purchased are classified as trading securities and are measured at fair value based on quoted market prices, market prices obtained from independent pricing services engaged by management or as determined by our valuation committee. Unrealized gains and losses are recorded as gain (loss) from trading securities—net reported in our condensed consolidated statements of operations.

Investments classified as equity investments are accounted for using the equity method, under which we recognize our respective share of the investee’s net income or loss for the period. As of June 30, 2013, our equity investments consisted of interests in funds which measure their underlying investments at fair value and report a net asset value on a recurring basis. The carrying amounts of these investments approximate their fair value.

Investments classified as available-for-sale are comprised of equity securities, investment-grade preferred instruments and investments in our sponsored open-end and closed-end mutual funds. These investments are carried at fair value based on quoted market prices or market prices obtained from independent pricing services engaged by management, with unrealized gains and losses, net of tax, reported in accumulated other comprehensive income. We periodically review each individual security position that has an unrealized loss, or impairment, to determine if that impairment is other than temporary. If we believe an impairment of a security position is other than temporary, the loss will be recognized in our condensed consolidated statements of operations. An other than temporary impairment is generally presumed to have occurred if the available-for-sale investment has an unrealized loss continuously for 12 or more months.

From time to time, our consolidated funds enter into derivative contracts to hedge market and credit risks of the underlying portfolios utilizing options, total return swaps, credit default swaps and futures contracts. These instruments are measured at fair value with gains and losses recorded as gain (loss) from trading securities—net in our condensed consolidated statements of operations. The fair values of these instruments are recorded in other assets or other liabilities and accrued expenses in our condensed consolidated statements of financial condition.

Additionally, from time to time, we enter into foreign exchange contracts to hedge our currency exposure related to client receivables. These instruments are measured at fair value with gains and losses recorded in other non-operating income in our condensed consolidated statements of operations. The fair values of these contracts are recorded in other assets or other liabilities and accrued expenses in our condensed consolidated statements of financial condition.

Goodwill and Intangible Assets

Goodwill represents the excess of the cost of our investment in the net assets of an acquired company over the fair value of the underlying identifiable net assets at the date of acquisition. Goodwill and indefinite lived intangible assets are not amortized but are tested at least annually for impairment by comparing the fair value to their carrying amounts. Finite lived intangible assets are amortized over their useful lives and are tested for impairment whenever events or changes in circumstances indicate that the carrying amount may not be recoverable. We determined that the fair values of our goodwill and indefinite lived intangible assets substantially exceeded their carrying values as a result of the most recent impairment test performed as of November 30, 2012.

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Stock-based Compensation

We recognize compensation expense for the grant-date fair value of awards of equity instruments granted to employees. This expense is recognized over the period during which employees are required to provide service. We also estimate forfeitures.

Income Taxes

We record the current and deferred tax consequences of all transactions that have been recognized in the condensed consolidated financial statements in accordance with the provisions of the enacted tax laws. Deferred tax assets are recognized for temporary differences that will result in deductible amounts in future years. Deferred tax liabilities are recognized for temporary differences that will result in taxable income in future years. We record a valuation allowance, when necessary, to reduce deferred tax assets to an amount that more likely than not will be realized. The effective tax rate for interim periods represents our best estimate of the effective tax rate expected to be applied to the full fiscal year.

Recently Issued Accounting Pronouncements

In July 2013, the Financial Accounting Standards Board (“FASB”) issued new guidance on the presentation of unrecognized tax benefits when a net operating loss carryforward, a similar tax loss, or a tax credit carryfoward exists. An entity is required to present an unrecognized tax benefit, or a portion of an unrecognized tax benefit, in the financial statements as a reduction to a deferred tax asset for a net operating loss carryforward, a similar tax loss, or a tax credit carryforward unless a net operating loss carryforward, a similar tax loss or a tax credit carryforward is not available as of the reporting date or the entity does not intend to use the deferred tax asset for this purpose (provided that the tax law permits a choice). This new guidance will be effective for the first quarter of our 2014 fiscal year. We do not anticipate that the adoption of this new guidance will have a material impact on our condensed consolidated financial statements.

In February 2013, the FASB issued new guidance requiring an entity to provide information about the amounts reclassified out of accumulated other comprehensive income by component. An entity is also required to present, either on the face of the statement where net income is presented or in the notes, significant amounts reclassified out of accumulated other comprehensive income by the respective line items of net income. This new guidance was effective for the first quarter of our 2013 fiscal year. The adoption of this new guidance did not have a material impact on our condensed consolidated financial statements.

In January 2013, the FASB issued new guidance to clarify the scope of the offsetting disclosures associated with derivative and hedging, including bifurcated embedded derivatives, repurchase agreements and reverse repurchase agreements, and securities borrowing and securities lending transactions. This new guidance was effective for the first quarter of our 2013 fiscal year. The adoption of this new guidance did not have a material impact on our condensed consolidated financial statements.

In October 2012, the FASB issued new guidance to make certain technical corrections to the Codification, which identifies when the use of fair value should be linked to the definition of fair value in ASC 820. The amendments affect various Codification topics and include source literature amendments, guidance clarification and reference corrections and relocated guidance. The amendments that will not have transition guidance were effective upon issuance and the amendments that are subject to the transition guidance were effective for the first quarter of our 2013 fiscal year. The adoption of this new guidance did not have a material impact on our condensed consolidated financial statements.

In July 2012, the FASB issued new guidance to simplify how entities test indefinite-lived intangible assets for impairment. The new guidance permits an entity to first assess qualitative factors to determine whether it is more likely than not that the fair value of an indefinite-lived intangible asset is less than its carrying amount as a basis for determining whether it is necessary to perform the second step to measure the amount of the impairment loss, if any. This new guidance was effective for the first quarter of our 2013 fiscal year. The adoption of this new guidance did not have a material impact on our condensed consolidated financial statements.

In December 2011, the FASB issued new guidance to create new disclosure requirements about the nature of an entity's rights of offset and related arrangements associated with its financial instruments and derivative instruments. This new guidance was effective for the first quarter of our 2013 fiscal year. The adoption of this new guidance did not have a material impact on our condensed consolidated financial statements.

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Forward-Looking Statements

This report and other documents filed by us contain forward-looking statements within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934, which reflect our current views with respect to, among other things, our operations and financial performance. You can identify these forward-looking statements by the use of words such as “outlook,” “believes,” “expects,” “potential,” “may,” “should,” “seeks,” “predicts,” “intends,” “plans,” “estimates,” “anticipates” or the negative versions of these words or other comparable words. Such forward-looking statements are subject to various risks and uncertainties.

Accordingly, there are or will be important factors that could cause actual outcomes or results to differ materially from those indicated in these statements. We believe that these factors include, but are not limited to, those described in the Risk Factors section of our Annual Report on Form 10-K for the year ended December 31, 2012, which is accessible on the Securities and Exchange Commission’s website at www.sec.gov and on our website at www.cohenandsteers.com. These factors should not be construed as exhaustive and should be read in conjunction with the other cautionary statements that are included in this report. We undertake no obligation to publicly update or review any forward-looking statement, whether as a result of new information, future developments or otherwise.

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Item 3.Quantitative and Qualitative Disclosures About Market Risk

There have been no material changes in our Quantitative and Qualitative Disclosures About Market Risk from those previously reported in our annual report on Form 10-K for the year ended December 31, 2012.

Item 4.Controls and Procedures

We maintain disclosure controls and procedures (as that term is defined in Rules 13a-15(e) and 15d-15(e) under the Securities Exchange Act of 1934, as amended (the “Exchange Act”)) that are designed to ensure that information required to be disclosed in our reports under the Exchange Act is recorded, processed, summarized and reported within the time periods specified in the Securities and Exchange Commission's rules and forms, and that such information is accumulated and communicated to our management, including our Co-Chief Executive Officers and our Chief Financial Officer, as appropriate, to allow timely decisions regarding required disclosures. Any controls and procedures, no matter how well designed and operated, can provide only reasonable assurance of achieving the desired control objectives.

Our management, including our Co-Chief Executive Officers and our Chief Financial Officer, has evaluated the effectiveness of our disclosure controls and procedures (as defined in Rule 13a-15(e) under the Exchange Act) as of June 30, 2013.

Based on that evaluation and subject to the foregoing, our Co-Chief Executive Officers and our Chief Financial Officer have concluded that our disclosure controls and procedures as of June 30, 2013 were effective to accomplish their objectives at a reasonable assurance level.

There has been no change in our internal control over financial reporting that occurred during the three months ended June 30, 2013 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

From time to time, we are involved in legal matters relating to claims arising in the ordinary course of business. There are currently no such matters pending that we believe could have a material adverse effect on our business or financial condition. From time to time, we receive subpoenas or other requests for information from various U.S. federal, state governmental and domestic and international regulatory authorities in connection with certain industry-wide or other investigations or proceedings. It is our policy to cooperate fully with such inquiries.

Item 1A.Risk Factors

For a discussion of our potential risks and uncertainties, please see Part 1, Item 1A of our 2012 Annual Report on Form 10-K filed with the SEC. There have been no material changes to the risk factors disclosed in Part 1, Item 1A of our 2012 Annual Report on Form 10-K.

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

During the three months ended June 30, 2013, we made the following purchases of our equity securities that are registered pursuant to Section 12(b) of the Securities Exchange Act of 1934.

Period	Total Number of Shares Purchased		Average Price Paid Per Share		Total Number of Shares Purchased as Part of Publicly Announced Plans or Programs	Maximum Number of Shares that May Yet be Purchased Under the Plans or Programs
April 1 through April 30, 2013	818	(1)	$	39.58	—	—
May 1 through May 31, 2013	646	(1)	$	38.75	—	—
June 1 through June 30, 2013	1,284	(1)	$	36.02	—	—
Total	2,748		$	37.72	—	—

_________________________

(1) Purchases made by us to satisfy the income tax withholding obligations of certain employees.

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Item 6.Exhibits

Any agreements or other documents filed as exhibits to this report are not intended to provide factual information or other disclosure other than with respect to the terms of the agreements or other documents themselves, and should not be relied upon for that purpose. In particular, any representations and warranties made by the Company in these agreements or other documents were made solely within the specific context of the relevant agreement or document and may not describe the actual state of affairs as of the date they were made or at any other time.

Exhibit No.	Description
3.1	—Form of Amended and Restated Certificate of Incorporation of the Registrant(1)
3.2	—Form of Amended and Restated Bylaws of the Registrant(2)
4.1	—Specimen Common Stock Certificate(1)
4.2	—Form of Registration Rights Agreement among the Registrant, Martin Cohen, Robert H. Steers, The Martin Cohen 1998 Family Trust and Robert H. Steers Family Trust(1)
10.1	—Amended and Restated Cohen & Steers, Inc. Stock Incentive Plan (3)
10.2	—Amended and Restated Cohen & Steers, Inc. Annual Incentive Plan (3)
10.3	—Amended and Restated Cohen & Steers, Inc. Employee Stock Purchase Plan (3)
31.1	—Certification of the Co-Chief Executive Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 (filed herewith).
31.2	—Certification of the Co-Chief Executive Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 (filed herewith).
31.3	—Certification of the Chief Financial Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 (filed herewith).
32.1	—Certification of the Co-Chief Executive Officer pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 (furnished herewith).
32.2	—Certification of the Co-Chief Executive Officer pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 (furnished herewith).
32.3	—Certification of the Chief Financial Officer pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 (furnished herewith).
101	The following financial statements from the Registrant's Quarterly Report on Form 10-Q for the quarter ended June 30, 2013 are furnished herewith, formatted in XBRL (eXtensible Business Reporting Language): (i) the Condensed Consolidated Statements of Financial Condition as of June 30, 2013 and December 31, 2012, (ii) the Condensed Consolidated Statements of Operations for the three and six months ended June 30, 2013 and 2012, (iii) the Condensed Consolidated Statements of Comprehensive Income for the three and six months ended June 30, 2013 and 2012, (iv) the Condensed Consolidated Statements of Changes in Stockholders' Equity and Redeemable Noncontrolling Interest for the six months ended June 30, 2013 and 2012, (v) the Condensed Consolidated Statements of Cash Flows for the six months ended June 30, 2013 and 2012, and (vi) the Notes to the Condensed Consolidated Financial Statements.

_________________________

(1) Incorporated by reference to the Registrant’s Registration Statement on Form S-1 (Registration No. 333-114027), as amended, originally filed with the Securities and Exchange Commission on March 30, 2004.

(2) Incorporated by reference to the Registrant’s Quarterly Report on Form 10-Q (Commission File No. 001-32236) for the quarter ended June 30, 2008.

(3) Incorporated by reference to the Registrant's Current Report on Form 8-K (Commission File No. 001-32236) filed with the Securities and Exchange Commission on May 13, 2013.

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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.

Date:	August 8, 2013	Cohen & Steers, Inc.
		/s/    Matthew S. Stadler
		Name: Matthew S. Stadler
		Title: Executive Vice President & Chief Financial Officer (Principal Financial and Accounting Officer)

Date:	August 8, 2013	Cohen & Steers, Inc.
		/s/    Elena Dulik
		Name: Elena Dulik
		Title: Senior Vice President & Chief Accounting Officer

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EX-31.1

Exhibit 31.1

CO-CHIEF EXECUTIVE OFFICER CERTIFICATION

AS ADOPTED PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

I, Martin Cohen, certify that:

1. I have reviewed this Quarterly Report on Form 10-Q for the period ended June 30, 2013 of Cohen & Steers, Inc. (the “Registrant”);

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the Registrant as of, and for, the periods presented in this report;

4. The Registrant's other certifying officers and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the Registrant and have:

a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the Registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c) Evaluated the effectiveness of the Registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d) Disclosed in this report any change in the Registrant's internal control over financial reporting that occurred during the Registrant's most recent fiscal quarter (the Registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the Registrant's internal control over financial reporting; and

5. The Registrant's other certifying officers and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the Registrant's auditors and the audit committee of the Registrant's board of directors (or persons performing the equivalent functions):

a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the Registrant's ability to record, process, summarize and report financial information; and

b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the Registrant's internal control over financial reporting.

Dated:	August 8, 2013	/s/ Martin Cohen
		Martin Cohen
		Co-Chief Executive Officer

EX-31.2

Exhibit 31.2

CO-CHIEF EXECUTIVE OFFICER CERTIFICATION

AS ADOPTED PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

I, Robert H. Steers, certify that:

1. I have reviewed this Quarterly Report on Form 10-Q for the period ended June 30, 2013 of Cohen & Steers, Inc. (the “Registrant”);

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the Registrant as of, and for, the periods presented in this report;

4. The Registrant's other certifying officers and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the Registrant and have:

a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the Registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c) Evaluated the effectiveness of the Registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d) Disclosed in this report any change in the Registrant's internal control over financial reporting that occurred during the Registrant's most recent fiscal quarter (the Registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the Registrant's internal control over financial reporting; and

5. The Registrant's other certifying officers and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the Registrant's auditors and the audit committee of the Registrant's board of directors (or persons performing the equivalent functions):

a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the Registrant's ability to record, process, summarize and report financial information; and

b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the Registrant's internal control over financial reporting.

Dated:	August 8, 2013	/s/ Robert H. Steers
		Robert H. Steers
		Co-Chief Executive Officer

EX-31.3

Exhibit 31.3

CHIEF FINANCIAL OFFICER CERTIFICATION

AS ADOPTED PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

I, Matthew S. Stadler, certify that:

1. I have reviewed this Quarterly Report on Form 10-Q for the period ended June 30, 2013 of Cohen & Steers, Inc. (the “Registrant”);

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the Registrant as of, and for, the periods presented in this report;

4. The Registrant's other certifying officers and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the Registrant and have:

a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the Registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c) Evaluated the effectiveness of the Registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d) Disclosed in this report any change in the Registrant's internal control over financial reporting that occurred during the Registrant's most recent fiscal quarter (the Registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the Registrant's internal control over financial reporting; and

5. The Registrant's other certifying officers and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the Registrant's auditors and the audit committee of the Registrant's board of directors (or persons performing the equivalent functions):

a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the Registrant's ability to record, process, summarize and report financial information; and

b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the Registrant's internal control over financial reporting.

Dated:	August 8, 2013	/s/ Matthew S. Stadler
		Matthew S. Stadler
		Executive Vice President & Chief Financial Officer

EX-32.1

Exhibit 32.1

Certification of the Co-Chief Executive Officer

Pursuant to 18 U.S.C. Section 1350,

As Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

In connection with the Quarterly Report of Cohen & Steers, Inc. (the “Company”) on Form 10-Q for the period ended June 30, 2013 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Martin Cohen, Co-Chief Executive Officer of the Company, hereby certify, pursuant to 18 U.S.C. § 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

(1) The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Dated:	August 8, 2013	/s/ Martin Cohen
		Martin Cohen
		Co-Chief Executive Officer

This certification accompanies this Report on Form 10-Q pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 and shall not, except to the extent required by such Act, be deemed filed by the Company for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”). Such certification will not be deemed to be incorporated by reference into any filing under the Securities Act of 1933, as amended, or the Exchange Act, except to the extent that the Company specifically incorporates it by reference.

EX-32.2

Exhibit 32.2

Certification of the Co-Chief Executive Officer

Pursuant to 18 U.S.C. Section 1350,

As Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

In connection with the Quarterly Report of Cohen & Steers, Inc. (the “Company”) on Form 10-Q for the period ended June 30, 2013 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Robert H. Steers, Co-Chief Executive Officer of the Company, hereby certify, pursuant to 18 U.S.C. § 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

(1) The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Dated:	August 8, 2013	/s/ Robert H. Steers
		Robert H. Steers
		Co-Chief Executive Officer

This certification accompanies this Report on Form 10-Q pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 and shall not, except to the extent required by such Act, be deemed filed by the Company for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”). Such certification will not be deemed to be incorporated by reference into any filing under the Securities Act of 1933, as amended, or the Exchange Act, except to the extent that the Company specifically incorporates it by reference.

EX-32.3

Exhibit 32.3

Certification of the Chief Financial Officer

Pursuant to 18 U.S.C. Section 1350,

As Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

In connection with the Quarterly Report of Cohen & Steers, Inc. (the “Company”) on Form 10-Q for the period ended June 30, 2013 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Matthew S. Stadler, Chief Financial Officer of the Company, hereby certify, pursuant to 18 U.S.C. § 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

(1) The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Dated:	August 8, 2013	/s/ Matthew S. Stadler
		Matthew S. Stadler
		Executive Vice President & Chief Financial Officer

This certification accompanies this Report on Form 10-Q pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 and shall not, except to the extent required by such Act, be deemed filed by the Company for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”). Such certification will not be deemed to be incorporated by reference into any filing under the Securities Act of 1933, as amended, or the Exchange Act, except to the extent that the Company specifically incorporates it by reference.

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Regulatory Requirements

6 Months Ended

Jun. 30, 2013

Regulatory Requirements [Abstract]

Regulatory Requirements

Regulatory Requirements

Securities, a registered broker/dealer in the U.S., is subject to the SEC’s Uniform Net Capital Rule 15c3-1 (the “Rule”), which requires that broker/dealers maintain a minimum level of net capital, as defined. As of June 30, 2013, Securities had net capital of approximately $1,180,000, which exceeded its requirements by approximately $1,121,000. The Rule also provides that equity capital may not be withdrawn or cash dividends paid if the resulting net capital of a broker/dealer is less than the amount required under the Rule and requires prior notice to the SEC for certain withdrawals of capital.

Securities does not carry customer accounts and is exempt from the SEC’s Rule 15c3-3 pursuant to provisions (k)(1) of such rule.

The non-U.S. subsidiaries of the Company (collectively, the “Foreign Regulated Entities”) are regulated outside the U.S. by the Hong Kong Securities and Futures Commission, the United Kingdom Financial Conduct Authority (formerly known as the United Kingdom Financial Securities Authority), and the Belgium Financial Services and Markets Authority. As of June 30, 2013, the Foreign Regulated Entities had aggregate regulatory capital of approximately $51,066,000, which exceeded requirements by approximately $49,566,000. In February 2013, the Company completed a reorganization of Cohen & Steers Europe S.P.R.L. which resulted in funds moving to the U.S.

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Condensed Consolidated Statements of Operations (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Revenue:
Investment advisory and administration fees	$ 70,353	$ 59,687	$ 135,747	$ 117,842
Distribution and service fees	3,741	2,747	7,175	5,248
Portfolio consulting and other	3,702	4,998	7,333	8,072
Total revenue	77,796	67,432	150,255	131,162
Expenses:
Employee compensation and benefits	24,895	22,927	48,272	44,595
Distribution and service fees	9,677	6,535	24,758	12,772
General and administrative	12,517	9,923	23,696	18,460
Depreciation and amortization	1,340	1,438	2,687	2,834
Amortization, deferred commissions	810	545	1,575	1,041
Total expenses	49,239	41,368	100,988	79,702
Operating income	28,557	26,064	49,267	51,460
Non-operating income:
Interest and dividend income—net	743	669	1,289	1,290
Loss from trading securities—net	(10,963)	(2,469)	(9,339)	(748)
Gain (loss) from available-for-sale securities—net	837	(84)	1,328	603
Equity in (losses) earnings of affiliates	(427)	(129)	109	643
Other	(368)	21	(639)	(763)
Total non-operating (loss) income	(10,178)	(1,992)	(7,252)	1,025
Income before provision for income taxes	18,379	24,072	42,015	52,485
Provision for income taxes	9,870	9,045	18,005	19,200
Net income	8,509	15,027	24,010	33,285
Less: Net loss attributable to redeemable noncontrolling interest	6,773	1,052	6,413	848
Net income attributable to common shareholders	$ 15,282	$ 16,079	$ 30,423	$ 34,133
Earnings per share attributable to common shareholders:
Basic	$ 0.34	$ 0.37	$ 0.69	$ 0.78
Diluted	$ 0.34	$ 0.36	$ 0.68	$ 0.77
Weighted average shares outstanding:
Basic	44,306	43,808	44,222	43,705
Diluted	45,002	44,393	44,942	44,390

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Basis of Presentation and Significant Accounting Policies

6 Months Ended

Jun. 30, 2013

Basis of Presentation and Significant Accounting Policies [Abstract]

Basis of Presentation and Significant Accounting Policies [Text Block]

Basis of Presentation and Significant Accounting Policies

The condensed consolidated financial statements of the Company included herein are unaudited and have been prepared in accordance with the instructions to Form 10-Q pursuant to the rules and regulations of the Securities and Exchange Commission (“SEC”). In the opinion of management, all adjustments, consisting of normal recurring adjustments, necessary for a fair presentation of the interim results have been made. The Company’s condensed consolidated financial statements and the related notes should be read together with the consolidated financial statements and the related notes included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2012.

Accounting Estimates—The preparation of the condensed consolidated financial statements requires management to make certain estimates and assumptions that affect the reported amounts of assets and liabilities and the disclosures of contingent assets and liabilities at the dates of the condensed consolidated financial statements and the reported amounts of revenue and expenses during the reporting periods. Management believes the estimates used in preparing the condensed consolidated financial statements are reasonable and prudent. Actual results could differ from those estimates.

Reclassifications—Certain prior year amounts have been reclassified to conform to the current year presentation. The amounts related to these reclassifications are not material to the Company’s condensed consolidated financial statements.

Consolidation—The Company consolidates operating entities deemed to be voting interest entities if the Company owns a majority of the voting interest. The equity method of accounting is used for investments in non-controlled affiliates in which the Company’s ownership ranges from 20 to 50 percent, or in instances in which the Company is able to exercise significant influence but not control. The Company also consolidates any variable interest entities (“VIEs”) in which the Company is the primary beneficiary. The Company provides for noncontrolling interests in consolidated subsidiaries for which the Company’s ownership is less than 100 percent.

A VIE is an entity in which either (a) the equity investment at risk is not sufficient to permit the entity to finance its own activities without additional financial support or (b) the group of holders of the equity investment at risk lack certain characteristics of a controlling financial interest. The primary beneficiary is the entity that has the obligation to absorb a majority of the expected losses or the right to receive the majority of the residual returns. Investments and redemptions or amendments to the governing documents of the respective entities could affect an entity's status as a VIE or the determination of the primary beneficiary. The Company assesses whether entities in which it has an interest are VIEs upon initial involvement and at each reporting date. The Company assesses whether it is the primary beneficiary of any VIEs identified by evaluating its economic interests in the entity held either directly by the Company and its affiliates or indirectly through employees. See Note 4 for further discussion about the Company’s investments.

Cash and Cash Equivalents—Cash equivalents consist of short-term, highly liquid investments, which are readily convertible into cash and have original maturities of three months or less.

Due from Broker—The Company conducts business, primarily through its consolidated seed investments, with brokers for certain of its investment activities. The clearing and custody operations for these investment activities are performed pursuant to agreements with prime brokers. The due from broker balance represents cash and cash equivalents balances at brokers and net receivables and payables for unsettled security transactions.

Investments—Management of the Company determines the appropriate classification of its investments at the time of purchase and re-evaluates such determination at each statement of financial condition date.

Securities owned and securities sold but not yet purchased are classified as trading securities and are measured at fair value based on quoted market prices, market prices obtained from independent pricing services engaged by management or as determined by the Company’s valuation committee. Unrealized gains and losses are recorded as gain (loss) from trading securities—net reported in the Company’s condensed consolidated statements of operations.

Investments classified as equity investments are accounted for using the equity method, under which the Company recognizes its respective share of the investee’s net income or loss for the period. As of June 30, 2013, the Company's equity investments consisted of interests in funds which measure their underlying investments at fair value and report a net asset value on a recurring basis. The carrying amounts of these investments approximate their fair value.

Investments classified as available-for-sale are comprised of equity securities, investment-grade preferred instruments and investments in Company-sponsored open-end and closed-end mutual funds. These investments are carried at fair value based on quoted market prices or market prices obtained from independent pricing services engaged by management, with unrealized gains and losses, net of tax, reported in accumulated other comprehensive income. The Company periodically reviews each individual security position that has an unrealized loss, or impairment, to determine if that impairment is other than temporary. If the Company believes an impairment of a security position is other than temporary, the loss will be recognized in the Company’s condensed consolidated statements of operations. An other than temporary impairment is generally presumed to have occurred if the available-for-sale investment has an unrealized loss continuously for 12 or more months.

From time to time, the funds consolidated by the Company enter into derivative contracts to hedge market and credit risks of the underlying portfolios utilizing options, total return swaps, credit default swaps and futures contracts. These instruments are measured at fair value with gains and losses recorded as gain (loss) from trading securities—net in the Company's condensed consolidated statements of operations. The fair values of these instruments are recorded in other assets or other liabilities and accrued expenses in the Company's condensed consolidated statements of financial condition.

Additionally, from time to time, the Company enters into foreign exchange contracts to hedge its currency exposure related to client receivables. These instruments are measured at fair value with gains and losses recorded in other non-operating income in the Company's condensed consolidated statements of operations. The fair values of these contracts are recorded in other assets or other liabilities and accrued expenses in the Company's condensed consolidated statements of financial condition.

Goodwill and Intangible Assets—Goodwill represents the excess of the cost of the Company’s investment in the net assets of an acquired company over the fair value of the underlying identifiable net assets at the date of acquisition. Goodwill and indefinite lived intangible assets are not amortized but are tested at least annually for impairment by comparing the fair value to their carrying amounts. Finite lived intangible assets are amortized over their useful lives and are tested for impairment whenever events or changes in circumstances indicate that the carrying amount may not be recoverable. See Note 3 for further discussion about the Company’s goodwill and intangible assets.

Redeemable Noncontrolling Interest—Redeemable noncontrolling interest represents third-party interests in the Company's consolidated entities. This interest is redeemable at the option of the investors and therefore is not treated as permanent equity. Redeemable noncontrolling interest is remeasured at redemption value which approximates the fair value at each reporting period.

Investment Advisory and Administration Fees—The Company earns revenue by providing asset management services to institutional accounts and to Company-sponsored open-end and closed-end mutual funds. This revenue is earned pursuant to the terms of the underlying advisory contract, and is based on a contractual investment advisory fee applied to the assets in the client’s portfolio, net of applicable waivers. The Company also earns revenue from administration fees paid by certain Company-sponsored open-end and closed-end mutual funds, based on the average assets under management of such funds. This revenue is recognized as such fees are earned.

Distribution and Service Fees—Distribution and service fee revenue is earned as the services are performed, based on contractually-predetermined percentages of the average assets under management of the Company-sponsored open-end load mutual funds. Distribution and service fee revenue is recorded gross of any third-party distribution and service fee expense arrangements. The expenses associated with these third-party distribution and service fee arrangements are recorded as incurred. During the first quarter of 2013, the Company made payments of approximately $7.2 million associated with an additional compensation agreement entered into in connection with the offering of Cohen & Steers MLP Income and Energy Opportunity Fund, Inc., a closed end mutual fund. These payments were reflected as expenses in distribution and service fees on the accompanying condensed consolidated statements of operations for the six months ended June 30, 2013.

Portfolio Consulting and Other—The Company earns portfolio consulting and other fees by: i) providing portfolio consulting services in connection with model-based strategies accounts; ii) earning a licensing fee for the use of the Company's proprietary indices; and iii) providing portfolio monitoring services related to a number of unit investment trusts. This revenue is earned pursuant to the terms of the underlying contract, and the fee schedules for these relationships vary based on the type of services the Company provides for each relationship. This revenue is recognized as such fees are earned.

Stock-based Compensation—The Company recognizes compensation expense for the grant-date fair value of awards of equity instruments granted to employees. This expense is recognized over the period during which employees are required to provide service. The Company also estimates forfeitures.

Income Taxes—The Company records the current and deferred tax consequences of all transactions that have been recognized in the condensed consolidated financial statements in accordance with the provisions of the enacted tax laws. Deferred tax assets are recognized for temporary differences that will result in deductible amounts in future years. Deferred tax liabilities are recognized for temporary differences that will result in taxable income in future years. The Company records a valuation allowance, when necessary, to reduce deferred tax assets to an amount that more likely than not will be realized. The effective tax rate for interim periods represents the Company’s best estimate of the effective tax rate expected to be applied to the full fiscal year.

Currency Translation and Transactions—Assets and liabilities of subsidiaries having non-U.S. dollar functional currencies are translated at exchange rates at the applicable condensed consolidated statement of financial condition date. Revenue and expenses are translated at average exchange rates during the period. The gains or losses resulting from translating non-U.S. dollar functional currency into U.S. dollars are included in the Company's condensed consolidated statements of comprehensive income. Gains or losses resulting from non-U.S. dollar currency transactions are included in other non-operating income in the condensed consolidated statements of operations.

Comprehensive Income—The Company reports all changes in comprehensive income in the condensed consolidated statements of comprehensive income. Comprehensive income includes net income or loss attributable to common shareholders, unrealized gains and losses from available-for-sale securities (net of tax), foreign currency translation gains and losses (net of tax) and reclassification to statements of operations of gains and losses from available-for-sale securities (net of tax).

Recently Issued Accounting Pronouncements—In July 2013, the Financial Accounting Standards Board (“FASB”) issued new guidance on the presentation of unrecognized tax benefits when a net operating loss carryforward, a similar tax loss, or a tax credit carryfoward exists. An entity is required to present an unrecognized tax benefit, or a portion of an unrecognized tax benefit, in the financial statements as a reduction to a deferred tax asset for a net operating loss carryforward, a similar tax loss, or a tax credit carryforward unless a net operating loss carryforward, a similar tax loss or a tax credit carryforward is not available as of the reporting date or the entity does not intend to use the deferred tax asset for this purpose (provided that the tax law permits a choice). This new guidance will be effective for the Company's first quarter of 2014. The Company does not anticipate that the adoption of this new guidance will have a material impact on the Company's condensed consolidated financial statements.

In February 2013, the FASB issued new guidance requiring an entity to provide information about the amounts reclassified out of accumulated other comprehensive income by component. An entity is also required to present, either on the face of the statement where net income is presented or in the notes, significant amounts reclassified out of accumulated other comprehensive income by the respective line items of net income. This new guidance was effective for the Company's first quarter of 2013. The adoption of this new guidance did not have a material impact on the Company's condensed consolidated financial statements.

In January 2013, the FASB issued new guidance to clarify the scope of the offsetting disclosures associated with derivative and hedging transactions, including bifurcated embedded derivatives, repurchase agreements and reverse repurchase agreements, and securities borrowing and securities lending transactions. This new guidance was effective for the Company's first quarter of 2013. The adoption of this new guidance did not have a material impact on the Company's condensed consolidated financial statements.

In October 2012, the FASB issued new guidance to make certain technical corrections to the FASB Accounting Standards Codification ("Codification"), which identifies when the use of fair value should be linked to the definition of fair value in Codification Topic 820, Fair Value Measurements and Disclosures (“ASC 820”). The amendments affect various Codification topics and include source literature amendments, guidance clarification and reference corrections and relocated guidance. The amendments that will not have transition guidance were effective upon issuance and the amendments that are subject to the transition guidance were effective for the Company's first quarter of 2013. The adoption of this new guidance did not have a material impact on the Company's condensed consolidated financial statements.

In July 2012, the FASB issued new guidance to simplify how entities test indefinite-lived intangible assets for impairment. The new guidance permits an entity to first assess qualitative factors to determine whether it is more likely than not that the fair value of an indefinite-lived intangible asset is less than its carrying amount as a basis for determining whether it is necessary to perform the second step to measure the amount of the impairment loss, if any. This new guidance was effective for the Company's first quarter of 2013. The adoption of this new guidance did not have a material impact on the Company's condensed consolidated financial statements.

In December 2011, the FASB issued new guidance to create new disclosure requirements about the nature of an entity's rights of offset and related arrangements associated with its financial instruments and derivative instruments. This new guidance was effective for the Company's first quarter of 2013. The adoption of this new guidance did not have a material impact on the Company's condensed consolidated financial statements.

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Goodwill and intangible Assets (Tables)

6 Months Ended

Jun. 30, 2013

Goodwill and Intangible Assets [Abstract]

Schedule of Intangible Assets [Table Text Block]

The following table details the gross carrying amounts and accumulated amortization for the intangible assets at June 30, 2013 and December 31, 2012 (in thousands):

	Remaining Amortization Period (In Months)	Gross Carrying Amount		Accumulated Amortization			Intangible Assets, Net
June 30, 2013:
Amortized intangible assets:
Client relationships	66	$	1,543	$	(1,047	)	$	496
Non-amortized intangible assets:
Mutual fund management contracts	—	1,250		—			1,250
Total		$	2,793	$	(1,047	)	$	1,746
December 31, 2012:
Amortized intangible assets:
Client relationships	72	$	1,543	$	(1,003	)	$	540
Non-amortized intangible assets:
Mutual fund management contracts	—	1,250		—			1,250
Total		$	2,793	$	(1,003	)	$	1,790

Schedule Future Amortization Expense [Table Text Block]

Estimated future amortization expense is as follows (in thousands):

Periods Ending December 31,	Estimated Amortization Expense
2013	$	45
2014	89
2015	89
2016	89
2017	89
Thereafter	95
Total	$	496

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Related Party Transactions

6 Months Ended

Jun. 30, 2013

Related Party Transactions [Abstract]

Related Party Transactions

Related Party Transactions

The Company is an investment adviser to, and has administrative agreements with, affiliated open-end and closed-end mutual funds for which certain employees are officers and/or directors. The following table sets forth the amount of revenue the Company earned from these affiliated funds for the three and six months ended June 30, 2013 and 2012 (in thousands):

	Three Months Ended June 30,				Six Months Ended June 30,
	2013		2012		2013		2012
Investment advisory and administration fees	$	49,054	$	37,492	$	93,121	$	72,846
Distribution and service fees	3,741		2,747		7,175		5,248
	$	52,795	$	40,239	$	100,296	$	78,094

For the six months ended June 30, 2012, the Company had investment advisory agreements with certain affiliated closed-end mutual funds, pursuant to which the Company contractually waived approximately $299,000 of advisory fees it was otherwise entitled to receive. There were no such fees waived for the three and six months ended June 30, 2013 or for the three months ended June 30, 2012. These investment advisory agreements contractually require the Company to waive a portion of the advisory fees the Company otherwise would charge for up to 10 years from the respective fund's inception date. The board of directors of these mutual funds must approve the renewal of the advisory agreements each year, including any reduction in advisory fee waivers scheduled to take effect during that year. As of June 30, 2013, there were no additional scheduled reductions in advisory fee waivers for any fund.

Sales proceeds, gross realized gains and dividend income from investments, available-for-sale in Company-sponsored mutual funds for the three and six months ended June 30, 2013 and 2012 are summarized below (in thousands):

	Three Months Ended June 30,				Six Months Ended June 30,
	2013		2012		2013		2012
Proceeds from sales	$	10,613	$	—	$	10,613	$	103
Gross realized gains	613		—		613		4
Dividend income	—		—		—		2

The Company has agreements with certain affiliated open-end and closed-end mutual funds to reimburse certain fund expenses. For the three months ended June 30, 2013 and 2012, expenses of approximately $2,663,000 and $2,000,000, respectively, were incurred by the Company pursuant to these agreements and are included in general and administrative expenses. For the six months ended June 30, 2013 and 2012, expenses of approximately $4,724,000 and $3,521,000, respectively, were incurred.

Included in accounts receivable at June 30, 2013 and December 31, 2012 are receivables due from Company-sponsored mutual funds of approximately $19,451,000 and $18,133,000, respectively.

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Regulatory Requirements (Details) (USD $)	Jun. 30, 2013
Securities Registered Domestically [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Net Capital	$ 1,180,000
Excess Capital	1,121,000
Foreign Country [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Net Capital	51,066,000
Excess Capital	$ 49,566,000

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Derivatives (Tables)

6 Months Ended

Jun. 30, 2013

Derivatives [Abstract]

Schedule of Notional Amounts of Outstanding Derivative Positions [Table Text Block]

The notional amount represents the absolute value amount of all outstanding derivative contracts at June 30, 2013 (in thousands):

	June 30, 2013
	Assets				Liabilities
	Notional		Fair Value		Notional		Fair Value
Total foreign exchange contracts	$	10,764	$	159	$	6,433	$	132
Total commodity contracts	23,480		826		50,608		2,905
Total derivatives	$	34,244	$	985	$	57,041	$	3,037

The notional amount represents the absolute value amount of all outstanding derivative contracts at December 31, 2012 (in thousands):

	December 31, 2012
	Assets				Liabilities
	Notional		Fair Value		Notional		Fair Value
Total equity contracts	$	9,608	$	103	$	4,942	$	115
Total foreign exchange contracts	13,584		616		—		—
Total commodity contracts	17,817		336		10,954		492
Total credit contracts	—		—		1,500		20
Total derivatives	$	41,009	$	1,055	$	17,396	$	627

XML

Fair Value (Tables)

6 Months Ended

Jun. 30, 2013

Jun. 30, 2012

Fair Value [Abstract]

Fair Value Measurements, Recurring and Nonrecurring [Table Text Block]

The following table presents fair value measurements as of December 31, 2012 (in thousands):

	Level 1		Level 2		Level 3		Total
Cash equivalents*	$	20,204	$	—	$	—	$	20,204
Due from broker*	$	3,950	$	—	$	—	$	3,950
Securities owned
Preferred securities	$	1,418	$	1,505	$	—	$	2,923
Common stocks	51,354		16,744		1,168		69,266
Fixed income securities	—		22,824		—		22,824
Limited partnership interests	—		—		2,142		2,142
Total securities owned	$	52,772	$	41,073	$	3,310	$	97,155
Equity investments **	$	—	$	8,017	$	89	$	8,106
Investments, available-for-sale
Preferred securities	$	1,254	$	5	$	3,080	$	4,339
Common stocks	10,388		—		—		10,388
Company-sponsored mutual funds	10,595		—		—		10,595
Total investments, available-for-sale	$	22,237	$	5	$	3,080	$	25,322
Derivatives - assets
Equity contracts	$	51	$	52	$	—	$	103
Foreign exchange contracts	—		616		—		616
Commodity contracts	336		—		—		336
Total derivatives - assets	$	387	$	668	$	—	$	1,055
Derivatives - liabilities
Equity contracts	$	4	$	111	$	—	$	115
Commodity contracts	492		—		—		492
Credit contracts	—		20		—		20
Total derivatives - liabilities	$	496	$	131	$	—	$	627
Securities sold but not yet purchased - common stocks	$	14,685	$	—	$	—	$	14,685

_________________________

*    Comprised of investments in money market funds.

**    Comprised of investments accounted for using the equity method of accounting.

Transfers among levels, if any, are recorded at the beginning of the reporting period.

Approximately $16,744,000 of securities owned classified as level 2 at December 31, 2012 were transfered to level 1 securities during the six months ended June 30, 2013. These securities were primarily comprised of investments in foreign common stocks valued at foreign exchange closing prices with no adjustments required for subsequent events or market movements.

The following table presents fair value measurements as of June 30, 2013 (in thousands):

	Level 1		Level 2		Level 3		Total
Cash equivalents*	$	45,335	$	—	$	—	$	45,335
Due from broker*	$	5,387	$	—	$	—	$	5,387
Securities owned
Preferred securities	$	2,826	$	1,767	$	—	$	4,593
Common stocks	54,835		555		413		55,803
Fixed income securities	—		37,032		—		37,032
Limited partnership interests	—		—		2,210		2,210
Total securities owned	$	57,661	$	39,354	$	2,623	$	99,638
Equity investments **	$	—	$	7,436	$	96	$	7,532
Investments, available-for-sale
Preferred securities	$	980	$	—	$	3,092	$	4,072
Common stocks	9,730		—		—		9,730
Company-sponsored mutual funds	208		—		—		208
Total investments, available-for-sale	$	10,918	$	—	$	3,092	$	14,010
Derivatives - assets
Foreign exchange contracts	$	—	$	159	$	—	$	159
Commodity contracts	826		—		—		826
Total derivatives - assets	$	826	$	159	$	—	$	985
Derivatives - liabilities
Foreign exchange contracts	$	—	$	132	$	—	$	132
Commodity contracts	2,905		—		—		2,905
Total derivatives - liabilities	$	2,905	$	132	$	—	$	3,037

_________________________

*    Comprised of investments in money market funds.

**    Comprised of investments accounted for using the equity method of accounting.

Fair Value, Valuation Technique, Unobservable Inputs [Table Text Block]

The valuation techniques and significant unobservable inputs used in the fair value measurement of the following level 3 investments as of June 30, 2013 were:

	Fair Value		Fair Value	Significant
	(in thousands)		Methodology	Unobservable Inputs	Range
Common shares of privately-held company	$	413	Market comparable companies	Price / tangible book ratio Liquidity discount	1.07x 30.2%
Limited partnership interests - direct investments in real estate	$	2,101	Discounted cash flows	Discount rate Exit capitalization rates Market rental rates	8.5% - 15% 8% - 9% $14.50 - 21.00 psf

The following table summarizes the changes in level 3 investments measured at fair value on a recurring basis for the three and six months ended June 30, 2013 (in thousands):

	Three Months Ended June 30, 2013										Six Months Ended June 30, 2013
	Securities Owned						Equity Investments		Investments, available-for-sale		Securities Owned						Equity Investments		Investments, available-for-sale
	Common Stocks			Limited Partnership Interests			GRP-TE		Preferred Securities		Common Stocks			Limited Partnership Interests			GRP-TE		Preferred Securities
Balance at beginning of period	$	1,075		$	2,292		$	95	$	3,079	$	1,168		$	2,142		$	89	$	3,080
Purchases / contributions	—			53			1		—		—			203			7		—
Sales / distributions	(419		)	(113		)	—		—		(419		)	(113		)	—		—
Realized losses	(211		)	—			—		—		(211		)	—			—		—
Unrealized (losses) gains *	(32		)	(22		)	—		13		(125		)	(22		)	—		12
Balance at end of period	$	413		$	2,210		$	96	$	3,092	$	413		$	2,210		$	96	$	3,092

_________________________

*    Pertains to unrealized (losses) gains from securities held at June 30, 2013.

The following table summarizes the changes in level 3 investments measured at fair value on a recurring basis for the three and six months ended June 30, 2012 (in thousands):

	Three Months Ended June 30, 2012												Six Months Ended June 30, 2012
	Securities Owned						Equity Investments		Investments, available-for-sale				Securities Owned						Equity Investments		Investments, available-for-sale
	Common Stocks				Limited Partnership Interests		GRP-TE		Preferred Securities				Common Stocks				Limited Partnership Interests		GRP-TE		Preferred Securities
Balance at beginning of period	$	1,903			$	811	$	36	$	3,244			$	1,275			$	—	$	—	$	4,150
Purchases / contributions	—				167		7		22				628				978		43		112
Sales / distributions	—				—		—		(38		)		—				—		—		(1,213		)
Realized gains	—				—		—		—				—				—		—		100
Unrealized gains **	68				16		—		578				68				16		—		657
Transfers out of level 3 investments	(628		)	*	—		—		(53		)	^	(628		)	*	—		—		(53		)	^
Balance at end of period	$	1,343			$	994	$	43	$	3,753			$	1,343			$	994	$	43	$	3,753

XML

Fair Value (Details) (USD $)					6 Months Ended																	3 Months Ended				6 Months Ended																3 Months Ended				6 Months Ended																					3 Months Ended				6 Months Ended																			3 Months Ended				6 Months Ended																												6 Months Ended	12 Months Ended	6 Months Ended	12 Months Ended
	Jun. 30, 2013		Dec. 31, 2012		Jun. 30, 2013 Level 3 [Member]	Jun. 30, 2013 Fair Value, Measurements, Recurring [Member] Level 1 [Member]	Dec. 31, 2012 Fair Value, Measurements, Recurring [Member] Level 1 [Member]	Jun. 30, 2013 Fair Value, Measurements, Recurring [Member] Level 2 [Member]	Dec. 31, 2012 Fair Value, Measurements, Recurring [Member] Level 2 [Member]	Jun. 30, 2013 Fair Value, Measurements, Recurring [Member] Level 3 [Member]	Dec. 31, 2012 Fair Value, Measurements, Recurring [Member] Level 3 [Member]	Jun. 30, 2013 Fair Value, Measurements, Recurring [Member] Total [Member]		Dec. 31, 2012 Fair Value, Measurements, Recurring [Member] Total [Member]		Jun. 30, 2013 Preferred securities	Dec. 31, 2012 Preferred securities	Jun. 30, 2013 Preferred securities Fair Value, Measurements, Recurring [Member] Level 1 [Member]	Dec. 31, 2012 Preferred securities Fair Value, Measurements, Recurring [Member] Level 1 [Member]	Jun. 30, 2013 Preferred securities Fair Value, Measurements, Recurring [Member] Level 2 [Member]	Dec. 31, 2012 Preferred securities Fair Value, Measurements, Recurring [Member] Level 2 [Member]	Jun. 30, 2013 Preferred securities Fair Value, Measurements, Recurring [Member] Level 3 [Member]		Jun. 30, 2012 Preferred securities Fair Value, Measurements, Recurring [Member] Level 3 [Member]		Jun. 30, 2013 Preferred securities Fair Value, Measurements, Recurring [Member] Level 3 [Member]		Jun. 30, 2012 Preferred securities Fair Value, Measurements, Recurring [Member] Level 3 [Member]		Dec. 31, 2012 Preferred securities Fair Value, Measurements, Recurring [Member] Level 3 [Member]	Jun. 30, 2013 Preferred securities Fair Value, Measurements, Recurring [Member] Total [Member]	Dec. 31, 2012 Preferred securities Fair Value, Measurements, Recurring [Member] Total [Member]	Jun. 30, 2013 Common Stocks [Member]	Dec. 31, 2012 Common Stocks [Member]	Jun. 30, 2013 Common Stocks [Member] Level 3 [Member]	Dec. 31, 2012 Common Stocks [Member] Level 3 [Member]	Mar. 31, 2013 Common Stocks [Member] Fair Value, Measurements, Recurring [Member]	Jun. 30, 2013 Common Stocks [Member] Fair Value, Measurements, Recurring [Member] Level 1 [Member]	Dec. 31, 2012 Common Stocks [Member] Fair Value, Measurements, Recurring [Member] Level 1 [Member]	Jun. 30, 2013 Common Stocks [Member] Fair Value, Measurements, Recurring [Member] Level 2 [Member]	Dec. 31, 2012 Common Stocks [Member] Fair Value, Measurements, Recurring [Member] Level 2 [Member]	Jun. 30, 2013 Common Stocks [Member] Fair Value, Measurements, Recurring [Member] Level 3 [Member]		Jun. 30, 2012 Common Stocks [Member] Fair Value, Measurements, Recurring [Member] Level 3 [Member]		Jun. 30, 2013 Common Stocks [Member] Fair Value, Measurements, Recurring [Member] Level 3 [Member]		Jun. 30, 2012 Common Stocks [Member] Fair Value, Measurements, Recurring [Member] Level 3 [Member]		Dec. 31, 2012 Common Stocks [Member] Fair Value, Measurements, Recurring [Member] Level 3 [Member]	Jun. 30, 2013 Common Stocks [Member] Fair Value, Measurements, Recurring [Member] Total [Member]	Dec. 31, 2012 Common Stocks [Member] Fair Value, Measurements, Recurring [Member] Total [Member]	Jun. 30, 2013 Fixed income [Member] Fair Value, Measurements, Recurring [Member] Level 1 [Member]	Dec. 31, 2012 Fixed income [Member] Fair Value, Measurements, Recurring [Member] Level 1 [Member]	Jun. 30, 2013 Fixed income [Member] Fair Value, Measurements, Recurring [Member] Level 2 [Member]	Dec. 31, 2012 Fixed income [Member] Fair Value, Measurements, Recurring [Member] Level 2 [Member]	Jun. 30, 2013 Fixed income [Member] Fair Value, Measurements, Recurring [Member] Level 3 [Member]	Dec. 31, 2012 Fixed income [Member] Fair Value, Measurements, Recurring [Member] Level 3 [Member]	Jun. 30, 2013 Fixed income [Member] Fair Value, Measurements, Recurring [Member] Total [Member]	Dec. 31, 2012 Fixed income [Member] Fair Value, Measurements, Recurring [Member] Total [Member]	Jun. 30, 2013 Limited partnership interest [Member] Level 3 [Member]	Dec. 31, 2012 Limited partnership interest [Member] Level 3 [Member]	Jun. 30, 2013 Limited partnership interest [Member] Fair Value, Measurements, Recurring [Member] Level 1 [Member]	Dec. 31, 2012 Limited partnership interest [Member] Fair Value, Measurements, Recurring [Member] Level 1 [Member]	Jun. 30, 2013 Limited partnership interest [Member] Fair Value, Measurements, Recurring [Member] Level 2 [Member]	Dec. 31, 2012 Limited partnership interest [Member] Fair Value, Measurements, Recurring [Member] Level 2 [Member]	Jun. 30, 2013 Limited partnership interest [Member] Fair Value, Measurements, Recurring [Member] Level 3 [Member]		Jun. 30, 2012 Limited partnership interest [Member] Fair Value, Measurements, Recurring [Member] Level 3 [Member]		Jun. 30, 2013 Limited partnership interest [Member] Fair Value, Measurements, Recurring [Member] Level 3 [Member]		Jun. 30, 2012 Limited partnership interest [Member] Fair Value, Measurements, Recurring [Member] Level 3 [Member]		Dec. 31, 2012 Limited partnership interest [Member] Fair Value, Measurements, Recurring [Member] Level 3 [Member]	Jun. 30, 2013 Limited partnership interest [Member] Fair Value, Measurements, Recurring [Member] Total [Member]	Dec. 31, 2012 Limited partnership interest [Member] Fair Value, Measurements, Recurring [Member] Total [Member]	Jun. 30, 2013 Company-sponsored mutual funds	Dec. 31, 2012 Company-sponsored mutual funds	Jun. 30, 2013 Company-sponsored mutual funds Fair Value, Measurements, Recurring [Member] Level 1 [Member]	Dec. 31, 2012 Company-sponsored mutual funds Fair Value, Measurements, Recurring [Member] Level 1 [Member]	Jun. 30, 2013 Company-sponsored mutual funds Fair Value, Measurements, Recurring [Member] Level 2 [Member]	Dec. 31, 2012 Company-sponsored mutual funds Fair Value, Measurements, Recurring [Member] Level 2 [Member]	Jun. 30, 2013 Company-sponsored mutual funds Fair Value, Measurements, Recurring [Member] Level 3 [Member]	Dec. 31, 2012 Company-sponsored mutual funds Fair Value, Measurements, Recurring [Member] Level 3 [Member]	Jun. 30, 2013 Company-sponsored mutual funds Fair Value, Measurements, Recurring [Member] Total [Member]	Dec. 31, 2012 Company-sponsored mutual funds Fair Value, Measurements, Recurring [Member] Total [Member]	Jun. 30, 2013 GRP-TE	Dec. 31, 2012 GRP-TE	Jun. 30, 2013 GRP-TE Fair Value, Measurements, Recurring [Member] Level 3 [Member]		Jun. 30, 2012 GRP-TE Fair Value, Measurements, Recurring [Member] Level 3 [Member]		Jun. 30, 2013 GRP-TE Fair Value, Measurements, Recurring [Member] Level 3 [Member]		Jun. 30, 2012 GRP-TE Fair Value, Measurements, Recurring [Member] Level 3 [Member]		Dec. 31, 2012 Equity Contracts [Member] Fair Value, Measurements, Recurring [Member] Level 1 [Member]	Dec. 31, 2012 Equity Contracts [Member] Fair Value, Measurements, Recurring [Member] Level 2 [Member]	Dec. 31, 2012 Equity Contracts [Member] Fair Value, Measurements, Recurring [Member] Level 3 [Member]	Dec. 31, 2012 Equity Contracts [Member] Fair Value, Measurements, Recurring [Member] Total [Member]	Jun. 30, 2013 Foreign Exchange Contracts [Member] Fair Value, Measurements, Recurring [Member] Level 1 [Member]	Dec. 31, 2012 Foreign Exchange Contracts [Member] Fair Value, Measurements, Recurring [Member] Level 1 [Member]	Jun. 30, 2013 Foreign Exchange Contracts [Member] Fair Value, Measurements, Recurring [Member] Level 2 [Member]	Dec. 31, 2012 Foreign Exchange Contracts [Member] Fair Value, Measurements, Recurring [Member] Level 2 [Member]	Jun. 30, 2013 Foreign Exchange Contracts [Member] Fair Value, Measurements, Recurring [Member] Level 3 [Member]	Dec. 31, 2012 Foreign Exchange Contracts [Member] Fair Value, Measurements, Recurring [Member] Level 3 [Member]	Jun. 30, 2013 Foreign Exchange Contracts [Member] Fair Value, Measurements, Recurring [Member] Total [Member]	Dec. 31, 2012 Foreign Exchange Contracts [Member] Fair Value, Measurements, Recurring [Member] Total [Member]	Jun. 30, 2013 Commodity Contracts [Member] Fair Value, Measurements, Recurring [Member] Level 1 [Member]	Dec. 31, 2012 Commodity Contracts [Member] Fair Value, Measurements, Recurring [Member] Level 1 [Member]	Jun. 30, 2013 Commodity Contracts [Member] Fair Value, Measurements, Recurring [Member] Level 2 [Member]	Dec. 31, 2012 Commodity Contracts [Member] Fair Value, Measurements, Recurring [Member] Level 2 [Member]	Jun. 30, 2013 Commodity Contracts [Member] Fair Value, Measurements, Recurring [Member] Level 3 [Member]	Dec. 31, 2012 Commodity Contracts [Member] Fair Value, Measurements, Recurring [Member] Level 3 [Member]	Jun. 30, 2013 Commodity Contracts [Member] Fair Value, Measurements, Recurring [Member] Total [Member]	Dec. 31, 2012 Commodity Contracts [Member] Fair Value, Measurements, Recurring [Member] Total [Member]	Dec. 31, 2012 Credit Risk Contract [Member] Fair Value, Measurements, Recurring [Member] Level 1 [Member]	Dec. 31, 2012 Credit Risk Contract [Member] Fair Value, Measurements, Recurring [Member] Level 2 [Member]	Dec. 31, 2012 Credit Risk Contract [Member] Fair Value, Measurements, Recurring [Member] Level 3 [Member]	Dec. 31, 2012 Credit Risk Contract [Member] Fair Value, Measurements, Recurring [Member] Total [Member]	Jun. 30, 2013 Minimum [Member] Level 3 [Member]	Dec. 31, 2012 Minimum [Member] Level 3 [Member]	Jun. 30, 2013 Maximum [Member] Level 3 [Member]	Dec. 31, 2012 Maximum [Member] Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Assets, Level 2 to Level 1 Transfers, Amount																																					$ 16,744,000
Fair Value, Assets and Liabilities Measured on Recurring Basis [Abstract]
Cash equivalents						45,335,000	20,204,000	0	0	0	0	45,335,000	[1]	20,204,000	[1]
Due from broker						5,387,000	3,950,000	0	0	0	0	5,387,000	[1]	3,950,000	[1]
Securities owned	99,638,000	[2],[3]	97,155,000	[2],[3]		57,661,000	52,772,000	39,354,000	41,073,000	2,623,000	3,310,000	99,638,000		97,155,000				2,826,000	1,418,000	1,767,000	1,505,000	0				0				0	4,593,000	2,923,000						54,835,000	51,354,000	555,000	16,744,000	413,000				413,000				1,168,000	55,803,000	69,266,000	0	0	37,032,000	22,824,000	0	0	37,032,000	22,824,000			0	0	0	0	2,210,000				2,210,000				2,142,000	2,210,000	2,142,000											0	0
Equity Investments	7,532,000		8,106,000			0	0	7,436,000	8,017,000	96,000	89,000	7,532,000	[4]	8,106,000	[4]																																																																									96,000	89,000
Investments, available-for-sale	14,010,000		25,322,000			10,918,000	22,237,000	0	5,000	3,092,000	3,080,000	14,010,000		25,322,000		4,072,000	4,339,000	980,000	1,254,000	0	5,000	3,092,000				3,092,000				3,080,000	4,072,000	4,339,000	9,730,000	10,388,000				9,730,000	10,388,000	0	0	0				0				0	9,730,000	10,388,000																										208,000	10,595,000	208,000	10,595,000	0	0	0	0	208,000	10,595,000
Derivative - assets						826,000	387,000	159,000	668,000	0	0	985,000		1,055,000																																																																																				51,000	52,000	0	103,000	0	0	159,000	616,000	0	0	159,000	616,000	826,000	336,000	0	0	0	0	826,000	336,000
Derivative - liabilities						2,905,000	496,000	132,000	131,000	0	0	3,037,000		627,000																																																																																				4,000	111,000	0	115,000	0		132,000		0		132,000		2,905,000	492,000	0	0	0	0	2,905,000	492,000	0	20,000	0	20,000
Securities sold not yet purchased							14,685,000		0		0			14,685,000
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning Balance																						3,079,000		3,244,000		3,080,000		4,150,000														1,075,000		1,903,000		1,168,000		1,275,000																			2,292,000		811,000		2,142,000		0																	95,000		36,000		89,000		0
Purchases																						0		22,000		0		112,000														0		0		0		628,000																			53,000		167,000		203,000		978,000																	1,000		7,000		7,000		43,000
Sales																						0		(38,000)		0		(1,213,000)														(419,000)		0		(419,000)		0																			(113,000)		0		(113,000)		0																	0		0		0		0
Realized gains																						0		0		0		100,000														(211,000)		0		(211,000)		0																			0		0		0		0																			0				0
Unrealized (losses) gains																						13,000	[5]	578,000	[6]	12,000	[5]	657,000	[6]													(32,000)	[5]	68,000	[6]	(125,000)	[5]	68,000	[6]																		(22,000)	[5]	16,000	[6]	(22,000)	[5]	16,000	[6]																0	[5]	0	[6]	0	[5]	0	[6]
Ending Balance																						3,092,000		3,753,000		3,092,000		3,753,000														413,000		1,343,000		413,000		1,343,000																			2,210,000		994,000		2,210,000		994,000																	96,000		43,000		96,000		43,000
Level 3 Fair Value																																			413,000	1,168,000																									2,101,000	2,142,000
Level 3 Ratio Ranges					1.07																																																																																																																						1.02		1.1
Fair Value Inputs, Liquidity Discount					30.20%
Fair Value Inputs, Discount Rate																																																																																																																										0.00%		0.00%
fair value inputs, exit capitalization																																																																																																																										0.00%		0.00%
Fair Value Inputs, Price Per Square Foot																																																																																																																										14.50		0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3																								$ (53,000)	[7]			$ (53,000)	[7]															$ (628,000)	[8]			$ (628,000)	[8]																				$ 0				$ 0																			$ 0				$ 0

[1] Comprised of investments in money market funds.

[2] Pledged as collateral as of June 30, 2013 and December 31, 2012, respectively, attributable to the consolidated balances of Cohen & Steers Real Assets Fund and Cohen & Steers Active Commodities Fund, LP.

[3] Asset and liability amounts in parentheses represent the consolidated balances at December 31, 2012 attributable to the Cohen & Steers Global Real Estate Long-Short Fund, L.P., which was a variable interest entity as of December 31, 2012.

[4] Comprised of investments accounted for using the equity method of accounting.

[5] Pertains to unrealized (losses) gains from securities held at June 30, 2013.

[6] Pertains to unrealized gains from securities held at June 30, 2012.

[7] Transfered from level 3 to level 1 because securities started trading actively on an exchange during the six months ended June 30, 2012.

[8] Transfered from level 3 to level 2 because observable market data became available for the securities at June 30, 2012.

XML

Related Party Transactions (Narrative) (Details) (Affiliated Fund [Member], USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012	Dec. 31, 2012
Related Party Transaction [Line Items]
Advisory fees waived				$ 299,000
Fund expenses, included in general and administrative expenses	2,663,000	2,000,000	4,724,000	3,521,000
Receivables, company sponsored mutual funds	$ 19,451,000		$ 19,451,000		$ 18,133,000
Maximum [Member]
Related Party Transaction [Line Items]
Investment advisory agreement term			10 years

XML

Goodwill and intangible Assets (Details) (USD $)	3 Months Ended	6 Months Ended		12 Months Ended
	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012	Dec. 31, 2012
Finite-Lived Intangible Assets [Line Items]
Goodwill		$ 19,950,000		$ 20,122,000
Goodwill, Translation Adjustments		(172,000)
Finite-Lived Intangible Assets, Accumulated Amortization		(1,047,000)		(1,003,000)
Intangible Assets, Net		496,000
Intangible Assets Gross Excluding Goodwill		2,793,000		2,793,000
Intangible Assets, Net		1,746,000		1,790,000
Amortization of Intangible Assets	22,000		44,000
Remaining Amortization Period		66 months		72 months
Finite-Lived Intangible Assets, Future Amortization Expense [Abstract]
2013		45,000
2014		89,000
2015		89,000
2016		89,000
2017		89,000
Thereafter		95,000
Total		496,000
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross		1,543,000		1,543,000
Finite-Lived Intangible Assets, Accumulated Amortization		(1,047,000)		(1,003,000)
Intangible Assets, Net		496,000		540,000
Finite-Lived Intangible Assets, Future Amortization Expense [Abstract]
Total		496,000		540,000
Fund Management Contracts Member [Member]
Finite-Lived Intangible Assets [Line Items]
Indefinite-lived Intangible Assets		$ 1,250,000		$ 1,250,000

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Concentration of Credit Risk Concentration of Credit Risk (Details)	Jun. 30, 2013 financial_institution
Concentration of Credit Risk [Abstract]
Number Of Financial Institutions	3

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Investments (Tables)

6 Months Ended

Jun. 30, 2013

Investments [Abstract]

Summary Investment Holdings

The following is a summary of the Company's investments as of June 30, 2013 and December 31, 2012 (in thousands):

	June 30, 2013		December 31, 2012
Securities owned	$	99,638	$	97,155
Equity investments	7,532		8,106
Investments, available-for-sale	14,010		25,322

Schedule of Variable Interest Entities

The following represents the portion of the condensed consolidated statements of financial condition attributable to the consolidated Onshore Fund as of December 31, 2012. As of December 31, 2012, the following assets were available only to settle obligations of the Onshore Fund and these liabilities were only the obligations of the Onshore Fund for which the creditors do not have recourse to the general credit of the Company (in thousands):

	December 31, 2012
Assets:
Securities owned	$	26,002
Due from broker	12,358
Other assets	103
Total assets	$	38,463
Liabilities:
Securities sold but not yet purchased	$	14,685
Other liabilities	335
Total liabilities	$	15,020

Schedule of Fair Value of Securities Owned and Equity Investments

The following is a summary of the fair value of securities owned and equity investments as of June 30, 2013 and December 31, 2012 (in thousands):

	June 30, 2013				December 31, 2012
	Securities Owned		Equity Investments		Securities Owned		Equity Investments
ACOM	$	8,500	$	—	$	—	$	—
GRP-CIP	2,210		—		2,142		—
GRP-TE	—		96		—		89
Offshore Fund	—		7,436		—		8,017
Onshore Fund	413		—		26,002		—
RAP	88,515		—		69,011		—
Total	$	99,638	$	7,532	$	97,155	$	8,106

Trading Securities

Gain (loss) from trading securities—net for the three and six months ended June 30, 2013 and 2012 are summarized below (in thousands):

	Three Months Ended June 30,						Six Months Ended June 30,
	2013			2012			2013			2012
ACOM	$	(626	)	$	—		$	(626	)	$	—
GLIF	—			121			—			142
GRP-CIP	(23		)	9			(23		)	9
Onshore Fund	(1,100		)	(282		)	521			1,854
RAP	(9,214		)	(2,317		)	(9,211		)	(2,753		)
Total loss from trading securities—net	$	(10,963	)	$	(2,469	)	$	(9,339	)	$	(748	)

Schedule of Equity in Earnings (Losses) of Affiliates

Equity in earnings (losses) of affiliates for the three and six months ended June 30, 2013 and 2012 are summarized below (in thousands):

	Three Months Ended June 30,						Six Months Ended June 30,
	2013			2012			2013		2012
GRP-TE	$	—		$	—		$	—	$	—
Offshore Fund	(427		)	(129		)	109		643
Total equity in (losses) earnings of affiliates	$	(427	)	$	(129	)	$	109	$	643

Schedule of Available-for-sale Securities Reconciliation

The following is a summary of the cost, gross unrealized gains, gross unrealized losses and fair value of investments, available-for-sale as of June 30, 2013 and December 31, 2012 (in thousands):

	June 30, 2013
	Cost		Gross Unrealized Gains		Gross Unrealized Losses < 12 months			Fair Value
Preferred securities	$	4,119	$	33	$	(80	)	$	4,072
Common stocks	8,748		1,267		(285		)	9,730
Company-sponsored mutual funds	199		9		—			208
Total investments, available-for-sale	$	13,066	$	1,309	$	(365	)	$	14,010

	December 31, 2012
	Cost		Gross Unrealized Gains		Gross Unrealized Losses < 12 months			Fair Value
Preferred securities	$	4,351	$	70	$	(82	)	$	4,339
Common stocks	9,490		1,147		(249		)	10,388
Company-sponsored mutual funds	10,100		495		—			10,595
Total investments, available-for-sale	$	23,941	$	1,712	$	(331	)	$	25,322

Realized Gain (Loss) on Investments

Sales proceeds, gross realized gains and losses from investments, available-for-sale for the three and six months ended June 30, 2013 and 2012 are summarized below (in thousands):

	Three Months Ended June 30,						Six Months Ended June 30,
	2013			2012			2013			2012
Proceeds from sales	$	13,984		$	5,005		$	17,756		$	17,161
Gross realized gains	1,024			289			1,563			1,142
Gross realized losses	(187		)	(373		)	(235		)	(539		)

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Condensed Consolidated Statements of changes in Stockholders' Equity and Redeemable Noncontrolling Interest (Unaudited) (USD $) In Thousands, except Share data	Total	Common stocks	Additional Paid-in Capital	Accumulated Deficit	Accumulated Other Comprehensive Income (loss), net of tax	Treasury Stock	Total Stockholders' Equity	Redeemable Noncontrolling Interest
Redeemable noncontrolling interest, beginning balance at Dec. 31, 2011								$ 4,796
Beginning balance at Dec. 31, 2011		462	402,573	(83,063)	(225)	(89,235)	230,512
Shares of common stock, net, beginning total at Dec. 31, 2011		43,168,279
Dividends		0	0	(16,159)	0	0	(16,159)	0
Issuance of common stock		7	284	0	0	0	291	0
Issuance of common stock, Shares	822,163
Repurchase of common stock		0	0	0	0	(8,389)	(8,389)	0
Repurchase of common stock, Shares	(249,339)
Tax benefits associated with restricted stock units - net		0	2,842	0	0	0	2,842	0
Issuance of restricted stock units	412	0	1,112	0	0	0	1,112	0
Amortization of restricted stock units - Net		0	9,007	0	0	0	9,007	0
Net Income (loss)	33,285	0	0	34,133	0	0	34,133	(848)
Other comprehensive income (loss), net of tax		0	0	0	575	0	575	0
Distributions to redeemable noncontrolling interest		0	0	0	0	0	0	(1,121)
Contributions from redeemable noncontrolling interest		0	0	0	0	0		30,064
Foreign currency translation adjustment on reeemable noncontrolling Interest		0	0	0	0	0	0	33
Redeemable noncontrolling interest, ending balance at Jun. 30, 2012								32,924
Ending balance at Jun. 30, 2012		469	415,818	(65,089)	350	(97,624)	253,924
Shares of common stock, net, ending total at Jun. 30, 2012		43,741,000
Redeemable noncontrolling interest, beginning balance at Dec. 31, 2012								53,188
Beginning balance at Dec. 31, 2012	216,580	470	429,377	(117,889)	2,341	(97,719)	216,580
Shares of common stock, net, beginning total at Dec. 31, 2012	43,763,024	43,763,024
Dividends		0	0	(18,204)	0	0	(18,204)	0
Issuance of common stock		7	286	0	0	0	293	0
Issuance of common stock, Shares	715,348
Repurchase of common stock		0	0	0	0	(7,902)	(7,902)	0
Repurchase of common stock, Shares	(241,068)
Tax benefits associated with restricted stock units - net		0	2,122	0	0	0	2,122	0
Issuance of restricted stock units	501	0	1,140	0	0	0	1,140	0
Amortization of restricted stock units - Net		0	10,708	0	0	0	10,708	0
Forfeitures of vested restricted stock units		0	(10)	0	0	0	(10)	0
Net Income (loss)	24,010	0	0	30,423	0	0	30,423	(6,413)
Other comprehensive income (loss), net of tax		0	0	0	(738)	0	(738)	0
Contributions from redeemable noncontrolling interest		0	0	0	0	0		36,498
Redemptions of redeemable noncontrolling interest		0	0	0	0	0	0	(10,664)
Redeemable noncontrolling interest, ending balance at Jun. 30, 2013								72,609
Ending balance at Jun. 30, 2013	$ 234,412	$ 477	$ 443,623	$ (105,670)	$ 1,603	$ (105,621)	$ 234,412
Shares of common stock, net, ending total at Jun. 30, 2013	44,237,304	44,237,304

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Condensed Consolidated Statements of Cash Flows - (Continued) (Unaudited) (Parenthetical) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
Income Taxes Paid, Net	$ 13,784	$ 11,644
Fully Vested Restricted Stock Units Issued	639	701
Dividend Equivalents Declared	$ 501	$ 412

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Goodwill and intangible Assets

6 Months Ended

Jun. 30, 2013

Goodwill and Intangible Assets [Abstract]

Goodwill and Intangible Assets Disclosure [Text Block]

Goodwill and Intangible Assets

Goodwill

Goodwill represents the excess of purchase price over the net tangible assets and identifiable intangible assets of an acquired business. At June 30, 2013 and December 31, 2012, goodwill was approximately $19,950,000 and $20,122,000, respectively. The Company’s goodwill decreased by $172,000 in the six months ended June 30, 2013 as a result of foreign currency revaluation.

Intangible Assets

The following table details the gross carrying amounts and accumulated amortization for the intangible assets at June 30, 2013 and December 31, 2012 (in thousands):

	Remaining Amortization Period (In Months)	Gross Carrying Amount		Accumulated Amortization			Intangible Assets, Net
June 30, 2013:
Amortized intangible assets:
Client relationships	66	$	1,543	$	(1,047	)	$	496
Non-amortized intangible assets:
Mutual fund management contracts	—	1,250		—			1,250
Total		$	2,793	$	(1,047	)	$	1,746
December 31, 2012:
Amortized intangible assets:
Client relationships	72	$	1,543	$	(1,003	)	$	540
Non-amortized intangible assets:
Mutual fund management contracts	—	1,250		—			1,250
Total		$	2,793	$	(1,003	)	$	1,790

Amortization expense related to the intangible assets was approximately $22,000 for both the three months ended June 30, 2013 and 2012, respectively, and approximately $44,000 for both the six months ended June 30, 2013 and 2012, respectively. Estimated future amortization expense is as follows (in thousands):

Periods Ending December 31,	Estimated Amortization Expense
2013	$	45
2014	89
2015	89
2016	89
2017	89
Thereafter	95
Total	$	496

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Organization and Description of Business

6 Months Ended

Jun. 30, 2013

Organization and Description of Business [Abstract]

Organization and Description of Business [Text Block]

Organization and Description of Business

Cohen & Steers, Inc. (“CNS”) was organized as a Delaware corporation on March 17, 2004. CNS was formed to be the holding company for Cohen & Steers Capital Management, Inc. (“CSCM”), a New York corporation, and to allow for the issuance of common stock to the public.

The condensed consolidated financial statements set forth herein include the accounts of CNS and its direct and indirect subsidiaries. CNS’s wholly-owned subsidiaries are CSCM, Cohen & Steers Securities, LLC (“Securities”), Cohen & Steers Asia Limited and Cohen & Steers UK Limited; Cohen & Steers Europe S.P.R.L. (formerly known as Cohen & Steers Europe S.A.) is a wholly-owned subsidiary of Cohen & Steers UK Limited (collectively, the “Company”). All material intercompany balances and transactions have been eliminated in consolidation.

Through CSCM, a registered investment adviser under the Investment Advisers Act of 1940 (the “Advisers Act”), the Company serves institutional and individual investors around the world. Founded in 1986, the Company is a leading global investment manager with a long history of innovation and a focus on real assets, including real estate, infrastructure and commodities. Its clients include Company-sponsored open-end and closed-end mutual funds, U.S. and non-U.S. pension plans, endowment funds, foundations and subadvised funds for other financial institutions. Through Securities, its registered broker/dealer, the Company provides distribution services for certain of its funds.

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(Sales Proceeds and Realized Gain (Loss) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Gain (Loss) on Investments [Line Items]
Proceeds from sales			$ 17,756	$ 17,067
Gross realized gains	1,024	289	1,563	1,142
Company-sponsored mutual funds
Gain (Loss) on Investments [Line Items]
Proceeds from sales	10,613	0	10,613	103
Gross realized gains	613	0	613	4
Dividend income	$ 0	$ 0	$ 0	$ 2

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Earnings Per Share Earnings Per Share (Tables)

6 Months Ended

Jun. 30, 2013

Earnings Per Share [Abstract]

Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]

The following is a reconciliation of the income and share data used in the basic and diluted earnings per share computations for the three and six months ended June 30, 2013 and 2012 (in thousands, except per share data):

	Three Months Ended June 30,				Six Months Ended June 30,
	2013		2012		2013		2012
Net income	$	8,509	$	15,027	$	24,010	$	33,285
Less: Net loss attributable to redeemable noncontrolling interest	6,773		1,052		6,413		848
Net income attributable to common shareholders	$	15,282	$	16,079	$	30,423	$	34,133
Basic weighted average shares outstanding	44,306		43,808		44,222		43,705
Dilutive potential shares from restricted stock units	696		585		720		685
Diluted weighted average shares outstanding	45,002		44,393		44,942		44,390
Basic earnings per share attributable to common shareholders	$	0.34	$	0.37	$	0.69	$	0.78
Diluted earnings per share attributable to common shareholders	$	0.34	$	0.36	$	0.68	$	0.77

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Investments Trading and equity investments (Details) (USD $)	3 Months Ended			6 Months Ended
	Jun. 30, 2013		Jun. 30, 2012	Jun. 30, 2013		Jun. 30, 2012	Dec. 31, 2012
Assets:
Securities owned	$ 99,638,000	[1],[2]		$ 99,638,000	[1],[2]		$ 97,155,000	[1],[2]
Due from broker	31,561,000	[2]		31,561,000	[2]		17,617,000	[2]
Other assets	7,295,000	[2]		7,295,000	[2]		8,120,000	[2]
Total assets	353,201,000			353,201,000			337,315,000
Liabilities:
Other liabilities	23,078,000	[2]		23,078,000	[2]		18,181,000	[2]
Total liabilities	46,180,000			46,180,000			67,547,000
Equity Investments	7,532,000			7,532,000			8,106,000
Total loss from trading securities—net	(10,963,000)		(2,469,000)	(9,339,000)		(748,000)
Total equity in (losses) earnings of affiliates	(427,000)		(129,000)	109,000		643,000
Equity Investments	7,532,000			7,532,000			8,106,000
Investments, available-for-sale	14,010,000			14,010,000			25,322,000
ACOM
Assets:
Securities owned	8,500,000			8,500,000			0
Liabilities:
Equity Investments	0			0			0
Total loss from trading securities—net	(626,000)		0	(626,000)		0
GLIF
Liabilities:
Total loss from trading securities—net	0		121,000	0		142,000
GRP-CIP
Assets:
Securities owned	2,210,000			2,210,000			2,142,000
Liabilities:
Equity Investments	0			0			0
Total loss from trading securities—net	(23,000)		9,000	(23,000)		9,000
GRP-TE
Assets:
Securities owned	0			0			0
Liabilities:
Equity Investments	96,000			96,000			89,000
Total equity in (losses) earnings of affiliates	0		0	0		0
Offshore Fund
Assets:
Securities owned	0			0			0
Liabilities:
Equity Investments	7,436,000			7,436,000			8,017,000
Total equity in (losses) earnings of affiliates	(427,000)		(129,000)	109,000		643,000
Onshore Fund
Assets:
Securities owned	413,000			413,000			26,002,000
Liabilities:
Equity Investments	0			0			0
Total loss from trading securities—net	(1,100,000)		(282,000)	521,000		1,854,000
RAP
Assets:
Securities owned	88,515,000			88,515,000			69,011,000
Liabilities:
Equity Investments	0			0			0
Total loss from trading securities—net	(9,214,000)		(2,317,000)	(9,211,000)		(2,753,000)
Onshore Fund
Assets:
Securities owned							26,002,000
Due from broker							12,358,000
Other assets							103,000
Total assets							38,463,000
Liabilities:
Securities sold but not yet purchased							14,685,000
Other liabilities							335,000
Total liabilities							$ 15,020,000

[1] Pledged as collateral as of June 30, 2013 and December 31, 2012, respectively, attributable to the consolidated balances of Cohen & Steers Real Assets Fund and Cohen & Steers Active Commodities Fund, LP.

[2] Asset and liability amounts in parentheses represent the consolidated balances at December 31, 2012 attributable to the Cohen & Steers Global Real Estate Long-Short Fund, L.P., which was a variable interest entity as of December 31, 2012.

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Income Taxes (Details) (U.S. Federal, State, local and foreign taxes [Member])	3 Months Ended	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2013	Jun. 30, 2012
U.S. Federal, State, local and foreign taxes [Member]
Income Taxes [Line Items]
Effective income tax rate, continuing operations	39.00%	37.00%	36.00%
Effective Income Tax Rate, Adjusted		38.00%
Effective income tax rate, expected for fiscal year		38.00%

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Condensed Consolidated Statements of Financial Condition (Unaudited) Condensed Consolidated Statements of Financial Position (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Jun. 30, 2013		Dec. 31, 2012
Common Stock, Par or Stated Value Per Share	$ 0.01		$ 0.01
Common Stock, Shares Authorized	500,000,000		500,000,000
Common Stock, Shares, Issued	47,717,465		47,002,117
Common Stock, Shares, Outstanding	44,237,304		43,763,024
Treasury Stock, Shares	3,480,161		3,239,093
Securities owned	$ 99,638	[1],[2]	$ 97,155	[1],[2]
Due from broker	31,561	[2]	17,617	[2]
Other assets	7,295	[2]	8,120	[2]
Securities sold but not yet purchased	0	[2]	14,685	[2]
Other liabilities	23,078	[2]	18,181	[2]
Onshore Fund
Securities owned			26,002
Due from broker			12,358
Other assets			103
Securities sold but not yet purchased			14,685
Other liabilities			335
Securitites Owned [Member]
Securities owned and held as collateral	$ 12,357		$ 849

[1] Pledged as collateral as of June 30, 2013 and December 31, 2012, respectively, attributable to the consolidated balances of Cohen & Steers Real Assets Fund and Cohen & Steers Active Commodities Fund, LP.

[2] Asset and liability amounts in parentheses represent the consolidated balances at December 31, 2012 attributable to the Cohen & Steers Global Real Estate Long-Short Fund, L.P., which was a variable interest entity as of December 31, 2012.

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Derivatives

6 Months Ended

Jun. 30, 2013

Derivatives [Abstract]

Derivatives [Text Block]

6. Derivatives

The following is a summary of the notional and fair value of the derivative financial instruments. The notional amount represents the absolute value amount of all outstanding derivative contracts at June 30, 2013 (in thousands):

	June 30, 2013
	Assets				Liabilities
	Notional		Fair Value		Notional		Fair Value
Total foreign exchange contracts	$	10,764	$	159	$	6,433	$	132
Total commodity contracts	23,480		826		50,608		2,905
Total derivatives	$	34,244	$	985	$	57,041	$	3,037

The following is a summary of the notional and fair value of the derivative financial instruments. The notional amount represents the absolute value amount of all outstanding derivative contracts at December 31, 2012 (in thousands):

	December 31, 2012
	Assets				Liabilities
	Notional		Fair Value		Notional		Fair Value
Total equity contracts	$	9,608	$	103	$	4,942	$	115
Total foreign exchange contracts	13,584		616		—		—
Total commodity contracts	17,817		336		10,954		492
Total credit contracts	—		—		1,500		20
Total derivatives	$	41,009	$	1,055	$	17,396	$	627

As of June 30, 2013, cash included in due from broker and securities included in securities owned in the condensed consolidated statement of financial condition of approximately $2,467,000 and $12,357,000, respectively, were held as collateral for futures. As of December 31, 2012, cash included in due from broker and securities included in securities owned in the condensed consolidated statement of financial condition of approximately $2,161,000 and $849,000, respectively, were held as collateral for futures, total return and credit default swaps.

Gains and losses from derivative financial instruments for the three and six months ended June 30, 2013 and 2012 are summarized below (in thousands):

	Three Months Ended June 30,						Six Months Ended June 30,
	2013			2012			2013			2012
Equity contracts	$	(184	)	$	115		$	(584	)	$	80
Foreign exchange contracts	27			—			1,329			591
Commodity contracts	(3,747		)	(1,022		)	(3,840		)	(1,120		)
Credit contracts	(10		)	18			(21		)	(7		)
Total derivatives	$	(3,914	)	$	(889	)	$	(3,116	)	$	(456	)

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Condensed Consolidated Statements of Comprehensive Income (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Net income attributable to common shareholders	$ 15,282	$ 16,079	$ 30,423	$ 34,133
Foreign currency translation gain (loss), net of tax of zero	319	(1,953)	(343)	(814)
Net unrealized (loss) gain from available-for-sale securities, net of tax of zero	(863)	65	933	1,992
Reclassification to statements of operations of (gain) loss from available-for-sale securities, net of tax of zero	(837)	84	(1,328)	(603)
Total comprehensive income attributable to common shareholders	$ 13,901	$ 14,275	$ 29,685	$ 34,708

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Condensed Consolidated Statements of Financial Condition (Unaudited) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013		Dec. 31, 2012
Assets:
Cash and cash equivalents	$ 107,465		$ 95,412
Securities owned ($26,002) ($12,357 and $849)	99,638	[1],[2]	97,155	[1],[2]
Equity Investments	7,532		8,106
Investments, available-for-sale	14,010		25,322
Accounts receivable	45,762		44,397
Due from broker ($12,358)	31,561	[2]	17,617	[2]
Property and equipment—net	9,264		9,103
Goodwill	19,950		20,122
Intangible Assets, Net	1,746		1,790
Deferred income tax asset—net	8,978		10,171
Other assets ($103)	7,295	[2]	8,120	[2]
Total assets	353,201		337,315
Liabilities:
Accrued compensation	13,356		25,845
Securities sold but not yet purchased ($14,685)	0	[2]	14,685	[2]
Income tax payable	9,746		8,836
Other liabilities and accrued expenses ($335)	23,078	[2]	18,181	[2]
Total liabilities	46,180		67,547
Commitments and contingencies
Redeemable noncontrolling interest	72,609		53,188
Stockholders’ equity:
Common stock, $0.01 par value; 500,000,000 shares authorized; 47,717,465 and 47,002,117 shares issued and outstanding at June 30, 2013 and December 31, 2012, respectively	477		470
Additional paid-in capital	443,623		429,377
Accumulated deficit	(105,670)		(117,889)
Accumulated other comprehensive income, net of tax	1,603		2,341
Less: Treasury stock, at cost, 3,480,161 and 3,239,093 shares at June 30, 2013 and December 31, 2012, respectively	105,621		97,719
Total stockholders’ equity	234,412		216,580
Total liabilities and stockholders’ equity	$ 353,201		$ 337,315

[1] Pledged as collateral as of June 30, 2013 and December 31, 2012, respectively, attributable to the consolidated balances of Cohen & Steers Real Assets Fund and Cohen & Steers Active Commodities Fund, LP.

[2] Asset and liability amounts in parentheses represent the consolidated balances at December 31, 2012 attributable to the Cohen & Steers Global Real Estate Long-Short Fund, L.P., which was a variable interest entity as of December 31, 2012.

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Related Party Transactions (Tables)

6 Months Ended

Jun. 30, 2013

Related Party Transactions [Abstract]

Schedule of Related Party Transactions

The following table sets forth the amount of revenue the Company earned from these affiliated funds for the three and six months ended June 30, 2013 and 2012 (in thousands):

	Three Months Ended June 30,				Six Months Ended June 30,
	2013		2012		2013		2012
Investment advisory and administration fees	$	49,054	$	37,492	$	93,121	$	72,846
Distribution and service fees	3,741		2,747		7,175		5,248
	$	52,795	$	40,239	$	100,296	$	78,094

Schedule of Realized Gain (Loss)

Sales proceeds, gross realized gains and dividend income from investments, available-for-sale in Company-sponsored mutual funds for the three and six months ended June 30, 2013 and 2012 are summarized below (in thousands):

	Three Months Ended June 30,				Six Months Ended June 30,
	2013		2012		2013		2012
Proceeds from sales	$	10,613	$	—	$	10,613	$	103
Gross realized gains	613		—		613		4
Dividend income	—		—		—		2

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Fair Value Valuation Technique (Policies)

6 Months Ended

Jun. 30, 2013

Accounting Policies [Abstract]

Fair Value of Financial Instruments, Policy [Policy Text Block]

Valuation Techniques

In certain instances, debt and equity securities are valued on the basis of prices from an orderly transaction between market participants provided by reputable brokers/dealers or pricing services. In determining the value of a particular investment, pricing services may use information with respect to transactions in such investments, broker quotes, pricing matrices, market transactions in comparable investments and various relationships between investments. As part of its independent price verification process, the Company selectively performs detailed reviews of valuations provided by broker/dealers or pricing services.

Foreign exchange contracts are valued by interpolating a value using the spot foreign exchange rate and forward points (based on the spot rate and currency interest rate differentials), which are all inputs that are observable in active markets (level 2).

In the absence of observable market prices, the Company values its investments using valuation methodologies applied on a consistent basis. For some investments, little market activity may exist; management's determination of fair value is then based on the best information available in the circumstances, and may incorporate management's own assumptions and involves a significant degree of judgment, taking into consideration a combination of internal and external factors. Such investments are valued on a quarterly basis, taking into consideration any changes in key inputs and changes in economic and other relevant conditions, and valuation models are updated accordingly. The valuation process also includes a review by the Company's valuation committee which is primarily comprised of senior members from various departments within the Company, including investment management. The valuation committee provides independent oversight of the valuation policies and procedures.

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Subsequent Events (Details) (Dividend Declared [Member], Subsequent Event [Member], USD $)	0 Months Ended
	May 08, 2013
Dividend Declared [Member] | Subsequent Event [Member]
Subsequent Event [Line Items]
Dividends, Common Stock, Cash	$ 0.20

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Related Party Transactions (Details) (Affiliated Fund [Member], USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Affiliated Fund [Member]
Related Party Transactions, Revenue [Abstract]
Investment advisory and administrative fees	$ 49,054	$ 37,492	$ 93,121	$ 72,846
Distribution and service fees	3,741	2,747	7,175	5,248
Total	$ 52,795	$ 40,239	$ 100,296	$ 78,094

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Derivatives (Details) (USD $)	Jun. 30, 2013	Dec. 31, 2012
Derivative [Line Items]
Derivative Assets, Notional Amount	$ 34,244,000	$ 41,009,000
Derivative Assets, Fair Value	985,000	1,055,000
Derivative Liabilities, Notional Amount	57,041,000	17,396,000
Derivative Liabilities, Fair Value	3,037,000	627,000
Total foreign exchange contracts [Member]
Derivative [Line Items]
Derivative Assets, Notional Amount	10,764,000	13,584,000
Derivative Assets, Fair Value	159,000	616,000
Derivative Liabilities, Notional Amount	6,433,000	0
Derivative Liabilities, Fair Value	132,000	0
Total commodity contracts [Member]
Derivative [Line Items]
Derivative Assets, Notional Amount	23,480,000	17,817,000
Derivative Assets, Fair Value	826,000	336,000
Derivative Liabilities, Notional Amount	50,608,000	10,954,000
Derivative Liabilities, Fair Value	2,905,000	492,000
Equity Contracts [Member]
Derivative [Line Items]
Derivative Assets, Notional Amount		9,608,000
Derivative Assets, Fair Value		103,000
Derivative Liabilities, Notional Amount		4,942,000
Derivative Liabilities, Fair Value		115,000
Securitites Owned [Member]
Derivative [Line Items]
Securities owned and held as collateral	12,357,000	849,000
Due From Broker [Member]
Derivative [Line Items]
Cash included in due from broker pledged as collateral	2,467,000	2,161,000
Credit Risk Contract [Member]
Derivative [Line Items]
Derivative Assets, Notional Amount		0
Derivative Assets, Fair Value		0
Derivative Liabilities, Notional Amount		1,500,000
Derivative Liabilities, Fair Value		$ 20,000

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Earnings Per Share Earnings Per Share (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Earnings Per Share [Abstract]
Anti-dilutive common stock equivalents excluded from computation (in shares)	0	0	0	0
Net income	$ 8,509	$ 15,027	$ 24,010	$ 33,285
Less: Net Loss (income) attributable to redeemable noncontrolling interest	6,773	1,052	6,413	848
Net income attributable to common shareholders	$ 15,282	$ 16,079	$ 30,423	$ 34,133
Basic weighted average shares outstanding (in shares)	44,306,000	43,808,000	44,222,000	43,705,000
Dilutive potential shares from restricted stock units (in shares)	696,000	585,000	720,000	685,000
Diluted weighted average shares outstanding (in shares)	45,002,000	44,393,000	44,942,000	44,390,000
Basic earnings per share attributable to common shareholders (in dollars per share)	$ 0.34	$ 0.37	$ 0.69	$ 0.78
Diluted earnings per share attributable to common shareholders (in dollars per share)	$ 0.34	$ 0.36	$ 0.68	$ 0.77

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Fair Value

6 Months Ended

Jun. 30, 2013

Fair Value [Abstract]

Fair Value [Text Block]

Fair Value

ASC 820 specifies a hierarchy of valuation classifications based on whether the inputs to the valuation techniques used in each valuation classification are observable or unobservable. These classifications are summarized in the three broad levels listed below:

• Level 1—Unadjusted quoted prices for identical instruments in active markets.

• Level 2—Quoted prices for similar instruments in active markets; quoted prices for identical or similar instruments in markets that are not active; and model-derived valuations in which all significant inputs and significant value drivers are observable in active markets.

• Level 3—Valuations derived from valuation techniques in which significant inputs or significant value drivers are unobservable.

Inputs used to measure fair value might fall in different levels of the fair value hierarchy, in which case the Company defaults to the lowest level input that is significant to the fair value measurement in its entirety. These levels are not necessarily an indication of the risk or liquidity associated with the investments. In determining the appropriate levels, the Company performed a detailed analysis of the assets and liabilities that are subject to ASC 820. Transfers among levels, if any, are recorded at the beginning of the reporting period.

Approximately $16,744,000 of securities owned classified as level 2 at December 31, 2012 were transfered to level 1 securities during the six months ended June 30, 2013. These securities were primarily comprised of investments in foreign common stocks valued at foreign exchange closing prices with no adjustments required for subsequent events or market movements.

The following table presents fair value measurements as of June 30, 2013 (in thousands):

	Level 1		Level 2		Level 3		Total
Cash equivalents*	$	45,335	$	—	$	—	$	45,335
Due from broker*	$	5,387	$	—	$	—	$	5,387
Securities owned
Preferred securities	$	2,826	$	1,767	$	—	$	4,593
Common stocks	54,835		555		413		55,803
Fixed income securities	—		37,032		—		37,032
Limited partnership interests	—		—		2,210		2,210
Total securities owned	$	57,661	$	39,354	$	2,623	$	99,638
Equity investments **	$	—	$	7,436	$	96	$	7,532
Investments, available-for-sale
Preferred securities	$	980	$	—	$	3,092	$	4,072
Common stocks	9,730		—		—		9,730
Company-sponsored mutual funds	208		—		—		208
Total investments, available-for-sale	$	10,918	$	—	$	3,092	$	14,010
Derivatives - assets
Foreign exchange contracts	$	—	$	159	$	—	$	159
Commodity contracts	826		—		—		826
Total derivatives - assets	$	826	$	159	$	—	$	985
Derivatives - liabilities
Foreign exchange contracts	$	—	$	132	$	—	$	132
Commodity contracts	2,905		—		—		2,905
Total derivatives - liabilities	$	2,905	$	132	$	—	$	3,037

_________________________

*    Comprised of investments in money market funds.

**    Comprised of investments accounted for using the equity method of accounting.

Securities owned classified as level 2 in the above table was primarily comprised of investments in United States Treasury Bills carried at amortized cost, which approximates fair value.

Securities owned classified as level 3 in the above table were comprised of investments in the common stock of a privately held bank holding company and limited partnership interests. The investments in the common stock of a privately held bank holding company were valued by the Company's valuation committee using a market approach which utilized market multiples derived from a set of comparable public companies. The limited partnership interests represent co-investments through GRP-CIP, which along with the Company's interest in GRP-TE, represent the Company's collective ownership interests in limited partnership vehicles that invest in private real estate funds which are valued based on the net asset values of the underlying funds and direct investments in real estate which are generally valued using a discounted cash flow model. The methodology used to value the investments held by GRP-CIP was changed in the current period as the transaction cost was no longer a reasonable approximation of value due to the passage of time.

Equity investments classified as level 2 in the above table represent the carrying amount of partnership interests in the Offshore Fund, which approximates its fair value based on the fund's net asset value. The fund makes long and short investments in listed real estate equity securities to maximize absolute and risk-adjusted returns with modest volatility. The Company has the ability to redeem its investment in the fund monthly at net asset value per share with prior written notice of 30 days and there are no significant restrictions to redemption.

Investments, available-for-sale classified as level 3 in the above table were comprised primarily of an auction rate preferred security which was measured at fair value using a third party pricing service which utilizes a combination of a market approach based on the quoted prices for identical or similar instruments in markets that are not active and an income approach in which the expected cash flows of the securities were discounted back to the measurement date. The Company reviews the fair value provided by the pricing service and confirms its understanding of the methodology utilized.

The following table presents fair value measurements as of December 31, 2012 (in thousands):

	Level 1		Level 2		Level 3		Total
Cash equivalents*	$	20,204	$	—	$	—	$	20,204
Due from broker*	$	3,950	$	—	$	—	$	3,950
Securities owned
Preferred securities	$	1,418	$	1,505	$	—	$	2,923
Common stocks	51,354		16,744		1,168		69,266
Fixed income securities	—		22,824		—		22,824
Limited partnership interests	—		—		2,142		2,142
Total securities owned	$	52,772	$	41,073	$	3,310	$	97,155
Equity investments **	$	—	$	8,017	$	89	$	8,106
Investments, available-for-sale
Preferred securities	$	1,254	$	5	$	3,080	$	4,339
Common stocks	10,388		—		—		10,388
Company-sponsored mutual funds	10,595		—		—		10,595
Total investments, available-for-sale	$	22,237	$	5	$	3,080	$	25,322
Derivatives - assets
Equity contracts	$	51	$	52	$	—	$	103
Foreign exchange contracts	—		616		—		616
Commodity contracts	336		—		—		336
Total derivatives - assets	$	387	$	668	$	—	$	1,055
Derivatives - liabilities
Equity contracts	$	4	$	111	$	—	$	115
Commodity contracts	492		—		—		492
Credit contracts	—		20		—		20
Total derivatives - liabilities	$	496	$	131	$	—	$	627
Securities sold but not yet purchased - common stocks	$	14,685	$	—	$	—	$	14,685

_________________________

*    Comprised of investments in money market funds.

**    Comprised of investments accounted for using the equity method of accounting.

Securities owned classified as level 2 in the above table were primarily comprised of investments in United States Treasury Bills carried at amortized cost, which approximates fair value, and foreign common stocks valued at foreign exchange closing prices, adjusted for subsequent significant events or market movements.

Securities owned classified as level 3 in the above table were comprised of investments in the common stock of a privately held bank holding company and limited partnership interests. The investments in the common stock of a privately held bank holding company were valued by the Company's valuation committee using a market approach which utilized market multiples derived from a set of comparable public companies. The limited partnership interest made during 2012 as a co-investment through GRP-CIP, along with the Company's interests in GRP-TE, represent the Company's collective ownership interests in private equity vehicles that invest directly in U.S. commercial real estate and were valued primarily based on the recent transaction value of the underlying investments.

Equity investments classified as level 2 in the above table primarily represent the carrying amount of partnership interests in the Offshore Fund, which approximates its fair value based on the fund's net asset value. The fund makes long and short investments in listed real estate equity securities to maximize absolute and risk-adjusted returns with modest volatility. The Company has the ability to redeem its investment in the fund monthly at net asset value per share with prior written notice of 30 days and there are no significant restrictions to redemption.

Investments, available-for-sale classified as level 3 in the above table were comprised primarily of an auction rate preferred security which was measured at fair value using a third party pricing service which utilizes a combination of a market approach based on the quoted prices for identical or similar instruments in markets that are not active and an income approach in which the expected cash flows of the securities were discounted back to the measurement date. The Company reviews the fair value provided by the pricing service and confirms its understanding of the methodology utilized.

The following table summarizes the changes in level 3 investments measured at fair value on a recurring basis for the three and six months ended June 30, 2013 (in thousands):

	Three Months Ended June 30, 2013										Six Months Ended June 30, 2013
	Securities Owned						Equity Investments		Investments, available-for-sale		Securities Owned						Equity Investments		Investments, available-for-sale
	Common Stocks			Limited Partnership Interests			GRP-TE		Preferred Securities		Common Stocks			Limited Partnership Interests			GRP-TE		Preferred Securities
Balance at beginning of period	$	1,075		$	2,292		$	95	$	3,079	$	1,168		$	2,142		$	89	$	3,080
Purchases / contributions	—			53			1		—		—			203			7		—
Sales / distributions	(419		)	(113		)	—		—		(419		)	(113		)	—		—
Realized losses	(211		)	—			—		—		(211		)	—			—		—
Unrealized (losses) gains *	(32		)	(22		)	—		13		(125		)	(22		)	—		12
Balance at end of period	$	413		$	2,210		$	96	$	3,092	$	413		$	2,210		$	96	$	3,092

_________________________

*    Pertains to unrealized (losses) gains from securities held at June 30, 2013.

The following table summarizes the changes in level 3 investments measured at fair value on a recurring basis for the three and six months ended June 30, 2012 (in thousands):

	Three Months Ended June 30, 2012												Six Months Ended June 30, 2012
	Securities Owned						Equity Investments		Investments, available-for-sale				Securities Owned						Equity Investments		Investments, available-for-sale
	Common Stocks				Limited Partnership Interests		GRP-TE		Preferred Securities				Common Stocks				Limited Partnership Interests		GRP-TE		Preferred Securities
Balance at beginning of period	$	1,903			$	811	$	36	$	3,244			$	1,275			$	—	$	—	$	4,150
Purchases / contributions	—				167		7		22				628				978		43		112
Sales / distributions	—				—		—		(38		)		—				—		—		(1,213		)
Realized gains	—				—		—		—				—				—		—		100
Unrealized gains **	68				16		—		578				68				16		—		657
Transfers out of level 3 investments	(628		)	*	—		—		(53		)	^	(628		)	*	—		—		(53		)	^
Balance at end of period	$	1,343			$	994	$	43	$	3,753			$	1,343			$	994	$	43	$	3,753

_________________________

*    Transfered from level 3 to level 2 because observable market data became available for the securities at June 30, 2012.

^ Transfered from level 3 to level 1 because securities started trading actively on an exchange during the six months ended June 30, 2012.

**    Pertains to unrealized gains from securities held at June 30, 2012.

Realized gains (losses) from investments classified as securities owned, equity investments and investments, available-for-sale in the above tables were recorded as gain (loss) from trading securities, equity in earnings (losses) of affiliates and gain (loss) from available-for-sale securities, respectively, in the Company's condensed consolidated statements of operations. Unrealized gains (losses) from investments classified as securities owned and equity investments in the above tables were recorded as gain (loss) from trading securities and equity in earnings (losses) of affiliates, respectively, in the Company's condensed consolidated statements of operations. Unrealized gains (losses) from investments, available-for-sale in the above tables were recorded as unrealized gain (loss) from available-for-sale securities in the Company's condensed consolidated statements of comprehensive income.

Valuation Techniques

In certain instances, debt and equity securities are valued on the basis of prices from an orderly transaction between market participants provided by reputable brokers/dealers or pricing services. In determining the value of a particular investment, pricing services may use information with respect to transactions in such investments, broker quotes, pricing matrices, market transactions in comparable investments and various relationships between investments. As part of its independent price verification process, the Company selectively performs detailed reviews of valuations provided by broker/dealers or pricing services.

Foreign exchange contracts are valued by interpolating a value using the spot foreign exchange rate and forward points (based on the spot rate and currency interest rate differentials), which are all inputs that are observable in active markets (level 2).

In the absence of observable market prices, the Company values its investments using valuation methodologies applied on a consistent basis. For some investments, little market activity may exist; management's determination of fair value is then based on the best information available in the circumstances, and may incorporate management's own assumptions and involves a significant degree of judgment, taking into consideration a combination of internal and external factors. Such investments are valued on a quarterly basis, taking into consideration any changes in key inputs and changes in economic and other relevant conditions, and valuation models are updated accordingly. The valuation process also includes a review by the Company's valuation committee which is primarily comprised of senior members from various departments within the Company, including investment management. The valuation committee provides independent oversight of the valuation policies and procedures.

The valuation techniques and significant unobservable inputs used in the fair value measurement of the following level 3 investments as of June 30, 2013 were:

	Fair Value		Fair Value	Significant
	(in thousands)		Methodology	Unobservable Inputs	Range
Common shares of privately-held company	$	413	Market comparable companies	Price / tangible book ratio Liquidity discount	1.07x 30.2%
Limited partnership interests - direct investments in real estate	$	2,101	Discounted cash flows	Discount rate Exit capitalization rates Market rental rates	8.5% - 15% 8% - 9% $14.50 - 21.00 psf

The valuation techniques and significant unobservable inputs used in the fair value measurement of the following level 3 investments as of December 31, 2012 were:

	Fair Value		Fair Value	Significant
	(in thousands)		Methodology	Unobservable Inputs	Range
Common shares of privately-held company	$	1,168	Market comparable companies	Price / tangible book ratio	1.02x - 1.1x
Limited partnership interests	$	2,142	Transaction value	Recent transaction price

Changes in the significant unobservable inputs in the tables above may result in a materially higher or lower fair value measurement. The disclosure in the above tables excludes auction rate preferred securities for which fair value is based on unobservable but non-quantitative inputs. Such items include financial instruments for which the determination of fair value is based on unadjusted quotations provided by a third party pricing service. The disclosure in the above tables also excludes the Company's ownership interests in limited partnership vehicles that invest in private real estate funds which are valued based on the net asset values of the underlying funds.

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Basis of Presentation and Significant Accounting Policies Basis of Presentation and Significant Accounting Policies (Details)	Jun. 30, 2012
Minimum [Member]
Schedule of Equity Method Investments [Line Items]
Ownership range	20.00%
Maximum [Member]
Schedule of Equity Method Investments [Line Items]
Ownership range	50.00%

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Commitments and Contingencies (Details) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2013
Commitments [Member]
Loss Contingencies [Line Items]
Long-term Purchase Commitments, Time Period	12 years
commitment to invest [Member]
Loss Contingencies [Line Items]
Long-term purchase commitment	$ 5.1
Long-term committment, funded amount	$ 2.3

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Income Taxes

6 Months Ended

Jun. 30, 2013

Income Tax Disclosure [Abstract]

Income Tax Disclosure [Text Block]

Income Taxes

The provision for income taxes for the six months ended June 30, 2013 includes U.S. federal, state, local and foreign taxes at an approximate effective tax rate of 37%, which included discrete items, the most significant of which was attributable to the launch costs of Cohen & Steers MLP Income and Energy Opportunity Fund, Inc., a closed-end mutual fund. Excluding the discrete items, the effective tax rate for the six months ended June 30, 2013 was approximately 38%. The effective tax rate for the three months ended June 30, 2013 was approximately 39%. The effective tax rate for each of the three and six months ended June 30, 2012 was approximately 36%. The Company expects the tax rate for the full year 2013 to approximate 38%, excluding discrete items.

Deferred income taxes represent the tax effects of the temporary differences between book and tax bases and are measured using enacted tax rates that will be in effect when such items are expected to reverse. The Company's net deferred tax asset is primarily comprised of future income tax deductions attributable to the delivery of unvested restricted stock units. The Company records a valuation allowance, when necessary, to reduce deferred tax assets to an amount that more likely than not will be realized.

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Investments Investments

6 Months Ended

Jun. 30, 2013

Investments [Abstract]

Investments

Investments

The following is a summary of the Company's investments as of June 30, 2013 and December 31, 2012 (in thousands):

	June 30, 2013		December 31, 2012
Securities owned	$	99,638	$	97,155
Equity investments	7,532		8,106
Investments, available-for-sale	14,010		25,322

Trading and equity investments

The Cohen & Steers Active Commodities Fund, LP (“ACOM”), launched by the Company in April 2013, is structured as a partnership. The Company is the investment manager of ACOM for which it receives a management fee. As of June 30, 2013, the Company owned all of the voting interest in ACOM. Accordingly, the underlying assets and liabilities and results of operations of ACOM have been included in the Company's condensed consolidated financial statements.

Cohen & Steers Global Realty Partners III-TE, L.P. ("GRP-TE"), which had an initial closing in October 2011, is structured as a partnership. The Company is the general partner and investment manager of GRP-TE, for which it receives a management fee and is entitled to receive an incentive distribution, if earned. GRP-TE is a VIE and the Company is not deemed the primary beneficiary. As the general partner, the Company has significant influence over the financial decisions of GRP-TE and therefore records its investment in this fund using the equity method of accounting. The Company's equity interest in GRP-TE represents a seed investment to launch the fund which was made during the first quarter of 2012, adjusted for the Company’s proportionate share of the fund’s earnings. As of June 30, 2013, the fair value of the Company's equity interest in GRP-TE was approximately $96,000. The Company's risk with respect to its investment in GRP-TE is limited to its equity ownership and any uncollected management fees. In conjunction with the launch of GRP-TE, the Company established Cohen & Steers Co-Investment Partnership (“GRP-CIP”), which is used by the Company to fulfill its contractual commitment to co-invest with GRP-TE. See Note 11 for further discussion regarding the Company's co-investment commitment. As of June 30, 2013, the Company owned all of the voting interest in GRP-CIP. Accordingly, the underlying assets and liabilities and results of operations of GRP-CIP have been included in the Company's condensed consolidated financial statements.

During 2008, the Company launched the Cohen & Steers Global Real Estate Long-Short Fund, L.P. (the “Onshore Fund”) which is structured as a partnership. The Company is the general partner and investment manager of the Onshore Fund. As of June 30, 2013, the Company owned the majority of the voting interest in the Onshore Fund. Accordingly, the underlying assets and liabilities and results of operations of the Onshore Fund have been included in the Company's condensed consolidated financial statements with the third party interests classified as redeemable noncontrolling interest. The Onshore Fund had been identified as a VIE and the Company was the primary beneficiary until March 31, 2013. During April 2013, the unaffiliated limited partner redeemed all of its partnership interest from the Onshore Fund, which left the Company, with affiliated employees, owning 100% of the voting interests. As a result, the Onshore Fund is no longer a VIE because the interest holders' voting rights are proportionate with their rights to receive returns or obligation to absorb losses. The Onshore Fund continues to be consolidated.

The following represents the portion of the condensed consolidated statements of financial condition attributable to the consolidated Onshore Fund as of December 31, 2012. As of December 31, 2012, the following assets were available only to settle obligations of the Onshore Fund and these liabilities were only the obligations of the Onshore Fund for which the creditors do not have recourse to the general credit of the Company (in thousands):

	December 31, 2012
Assets:
Securities owned	$	26,002
Due from broker	12,358
Other assets	103
Total assets	$	38,463
Liabilities:
Securities sold but not yet purchased	$	14,685
Other liabilities	335
Total liabilities	$	15,020

The Cohen & Steers Global Real Estate Long-Short Offshore Fund, Ltd. (the “Offshore Fund”), launched by the Company in 2008, is structured as a partnership. The Company is the general partner and investment manager of the Offshore Fund for which it receives a management fee and is entitled to receive a performance fee, if earned. The Company determined that the Offshore Fund was not a VIE. The limited partners, unaffiliated with the Company, have the ability to dissolve the fund with a majority vote. As a result, the Company does not have financial control and the Offshore Fund is not consolidated into the Company's condensed consolidated financial statements. As the general partner, the Company has significant influence over the financial decisions of the Offshore Fund and therefore, as of June 30, 2013, records its investment in this fund using the equity method of accounting. The Company’s equity interest in the Offshore Fund represents a seed investment to launch the fund, adjusted for the Company’s proportionate share of the fund’s earnings.

The Cohen & Steers Real Asset Fund (“RAP”), launched by the Company on January 31, 2012, is an open-end mutual fund for which the Company is the investment manager. As of June 30, 2013, the Company had a controlling financial interest in RAP. Accordingly, the underlying assets and liabilities and results of operations of RAP have been included in the Company's condensed consolidated financial statements with the third party interests classified as redeemable noncontrolling interest.

Prior to the sale of the Company's remaining interest in Cohen & Steers Global Listed Infrastructure Fund (“GLIF”) during June 2012, the Company owned the majority of the voting interest in GLIF. Accordingly, the results of operations of GLIF had been included in the Company's condensed consolidated financial statements for the three and six months ended June 30, 2012.

The following is a summary of the fair value of securities owned and equity investments as of June 30, 2013 and December 31, 2012 (in thousands):

	June 30, 2013				December 31, 2012
	Securities Owned		Equity Investments		Securities Owned		Equity Investments
ACOM	$	8,500	$	—	$	—	$	—
GRP-CIP	2,210		—		2,142		—
GRP-TE	—		96		—		89
Offshore Fund	—		7,436		—		8,017
Onshore Fund	413		—		26,002		—
RAP	88,515		—		69,011		—
Total	$	99,638	$	7,532	$	97,155	$	8,106

Gain (loss) from trading securities—net for the three and six months ended June 30, 2013 and 2012 are summarized below (in thousands):

	Three Months Ended June 30,						Six Months Ended June 30,
	2013			2012			2013			2012
ACOM	$	(626	)	$	—		$	(626	)	$	—
GLIF	—			121			—			142
GRP-CIP	(23		)	9			(23		)	9
Onshore Fund	(1,100		)	(282		)	521			1,854
RAP	(9,214		)	(2,317		)	(9,211		)	(2,753		)
Total loss from trading securities—net	$	(10,963	)	$	(2,469	)	$	(9,339	)	$	(748	)

Equity in earnings (losses) of affiliates for the three and six months ended June 30, 2013 and 2012 are summarized below (in thousands):

	Three Months Ended June 30,						Six Months Ended June 30,
	2013			2012			2013		2012
GRP-TE	$	—		$	—		$	—	$	—
Offshore Fund	(427		)	(129		)	109		643
Total equity in (losses) earnings of affiliates	$	(427	)	$	(129	)	$	109	$	643

Available-for-sale

The following is a summary of the cost, gross unrealized gains, gross unrealized losses and fair value of investments, available-for-sale as of June 30, 2013 and December 31, 2012 (in thousands):

	June 30, 2013
	Cost		Gross Unrealized Gains		Gross Unrealized Losses < 12 months			Fair Value
Preferred securities	$	4,119	$	33	$	(80	)	$	4,072
Common stocks	8,748		1,267		(285		)	9,730
Company-sponsored mutual funds	199		9		—			208
Total investments, available-for-sale	$	13,066	$	1,309	$	(365	)	$	14,010

	December 31, 2012
	Cost		Gross Unrealized Gains		Gross Unrealized Losses < 12 months			Fair Value
Preferred securities	$	4,351	$	70	$	(82	)	$	4,339
Common stocks	9,490		1,147		(249		)	10,388
Company-sponsored mutual funds	10,100		495		—			10,595
Total investments, available-for-sale	$	23,941	$	1,712	$	(331	)	$	25,322

Unrealized losses on investments, available-for-sale as of June 30, 2013 were generally caused by market conditions. When evaluating whether an unrealized loss on an investment, available-for-sale is other than temporary, the Company reviews such factors as extent and duration of the loss, deterioration in the issuer’s credit quality, reduction or cessation of dividend payments and overall financial strength of the issuer. As of June 30, 2013, the Company determined that it had the ability and intent to hold the remaining investments for which no other-than-temporary impairment has occurred until a recovery of fair value. Accordingly, impairment of these investments is considered temporary.

Sales proceeds, gross realized gains and losses from investments, available-for-sale for the three and six months ended June 30, 2013 and 2012 are summarized below (in thousands):

	Three Months Ended June 30,						Six Months Ended June 30,
	2013			2012			2013			2012
Proceeds from sales	$	13,984		$	5,005		$	17,756		$	17,161
Gross realized gains	1,024			289			1,563			1,142
Gross realized losses	(187		)	(373		)	(235		)	(539		)

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Condensed Consolidated Statements of Cash Flows - (Continued) (Unaudited) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
Cash flows from operating activities:
Net income	$ 24,010	$ 33,285
Adjustments to reconcile net income to net cash used in operating activities:
Stock compensation expense	10,752	9,041
Amortization, deferred commissions	1,575	1,041
Depreciation and amortization	2,687	2,834
Deferred rent	969	(267)
Loss from trading securities—net	9,339	748
Equity in earnings of affiliates	(109)	(643)
Gain from available-for-sale securities, net	(1,328)	(603)
Deferred income taxes	1,092	3,316
Foreign currency loss	930	564
Changes in operating assets and liabilities:
Accounts receivable	(2,296)	(7,986)
Due from broker	(13,088)	(7,474)
Deferred commissions	(1,746)	(1,415)
Securities owned	(12,532)	(47,405)
Other assets	996	431
Accrued compensation	(12,011)	(9,239)
Securities sold but not yet purchased	(14,685)	1,662
Income tax payable	1,145	1,392
Other liabilities and accrued expenses	3,885	4,245
Net cash used in operating activities	(415)	(16,473)
Cash flows from investing activities:
Proceeds from redemptions (purchases) of equity investments	683	(43)
Purchases of investments, available-for-sale	(5,464)	(13,904)
Proceeds from sales of investments, available-for-sale	17,756	17,067
Purchases of property and equipment	(2,826)	(1,559)
Net cash provided by investing activities	10,149	1,561
Cash flows from financing activities:
Excess tax benefits associated with restricted stock units	1,981	2,817
Issuance of common stock	250	255
Repurchase of common stock	(7,902)	(8,389)
Dividends to stockholders	17,703	15,747
Redemptions of redeemable noncontrolling interest	(10,664)	(1,121)
Contributions from redeemable noncontrolling interest	36,498	30,064
Net cash provided by financing activities	2,460	7,879
Net increase (decrease) in cash and cash equivalents	12,194	(7,033)
Effect of foreign exchange rate changes	(141)	(518)
Cash and cash equivalents, beginning of the period	95,412	127,824
Cash and cash Equivalents, end of the period	$ 107,465	$ 120,273

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Investments Available for Sale Securities (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012	Dec. 31, 2012
Available-for-sale Securities [Abstract]
Cost	$ 13,066		$ 13,066		$ 23,941
Gross Unrealized Gains			1,309		1,712
Gross Unrealized Losses 12 months			365		331
Fair Value	14,010		14,010		25,322
Proceeds from Investing Activities [Abstract]
Proceeds from sales	13,984	5,005	17,756	17,161
Gross realized gains	1,024	289	1,563	1,142
Gross realized losses	(187)	(373)	(235)	(539)
Preferred securities
Available-for-sale Securities [Abstract]
Cost	4,119		4,119		4,351
Gross Unrealized Gains			33		70
Gross Unrealized Losses 12 months			80		82
Fair Value	4,072		4,072		4,339
Common stocks
Available-for-sale Securities [Abstract]
Cost	8,748		8,748		9,490
Gross Unrealized Gains			1,267		1,147
Gross Unrealized Losses 12 months			285		249
Fair Value	9,730		9,730		10,388
Company-sponsored mutual funds
Available-for-sale Securities [Abstract]
Cost	199		199		10,100
Gross Unrealized Gains			9		495
Gross Unrealized Losses 12 months			0		0
Fair Value	$ 208		$ 208		$ 10,595

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Commitments and Contingencies

6 Months Ended

Jun. 30, 2013

Commitments and Contingencies [Abstract]

Commitments and Contingencies Disclosure [Text Block]

Commitments and Contingencies

From time to time, the Company is involved in legal matters relating to claims arising in the ordinary course of business. There are currently no such matters pending that the Company believes could have a material adverse effect on its business or financial condition.

The Company periodically commits to fund a portion of the equity in certain of its sponsored investment products. The Company has committed to co-invest up to $5.1 million in GRP-TE, and such co-investment will be invested with GRP-TE for up to 12 years through the life of the fund. As of June 30, 2013, the Company has funded approximately $2.3 million with respect to this commitment. The actual timing of the funding of this commitment is currently unknown, as the drawdown of the Company's commitment is contingent on the timing of drawdowns by the underlying funds and co-investments in which GRP invests. This unfunded commitment was not recorded on the Company's condensed consolidated statement of financial condition as of June 30, 2013.

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Earnings Per Share

6 Months Ended

Jun. 30, 2013

Earnings Per Share [Abstract]

Earnings Per Share

Earnings Per Share

Basic earnings per share are calculated by dividing net income attributable to common shareholders by the weighted average shares outstanding. Diluted earnings per share are calculated by dividing net income attributable to common shareholders by the total weighted average shares of common stock outstanding and common stock equivalents. Common stock equivalents are comprised of dilutive potential shares from restricted stock unit awards. Common stock equivalents are excluded from the computation if their effect is anti-dilutive. Diluted earnings per share are computed using the treasury stock method.

No anti-dilutive common stock equivalents were excluded from the computation for the three and six months ended June 30, 2013 and 2012.

The following is a reconciliation of the income and share data used in the basic and diluted earnings per share computations for the three and six months ended June 30, 2013 and 2012 (in thousands, except per share data):

	Three Months Ended June 30,				Six Months Ended June 30,
	2013		2012		2013		2012
Net income	$	8,509	$	15,027	$	24,010	$	33,285
Less: Net loss attributable to redeemable noncontrolling interest	6,773		1,052		6,413		848
Net income attributable to common shareholders	$	15,282	$	16,079	$	30,423	$	34,133
Basic weighted average shares outstanding	44,306		43,808		44,222		43,705
Dilutive potential shares from restricted stock units	696		585		720		685
Diluted weighted average shares outstanding	45,002		44,393		44,942		44,390
Basic earnings per share attributable to common shareholders	$	0.34	$	0.37	$	0.69	$	0.78
Diluted earnings per share attributable to common shareholders	$	0.34	$	0.36	$	0.68	$	0.77

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Basis of Presentation and Significant Accounting Policies Basis of Presentation and Significant Accounting Policies (Policies)

6 Months Ended

Jun. 30, 2013

Basis of Presentation and Significant Accounting Policies [Abstract]

Accounting Estimates [Policy Text Block]

Accounting Estimates—The preparation of the condensed consolidated financial statements requires management to make certain estimates and assumptions that affect the reported amounts of assets and liabilities and the disclosures of contingent assets and liabilities at the dates of the condensed consolidated financial statements and the reported amounts of revenue and expenses during the reporting periods. Management believes the estimates used in preparing the condensed consolidated financial statements are reasonable and prudent. Actual results could differ from those estimates.

Reclassifications [Policy Text Block]

Reclassifications—Certain prior year amounts have been reclassified to conform to the current year presentation. The amounts related to these reclassifications are not material to the Company’s condensed consolidated financial statements

Consolidation [Policy Text Block]

Consolidation—The Company consolidates operating entities deemed to be voting interest entities if the Company owns a majority of the voting interest. The equity method of accounting is used for investments in non-controlled affiliates in which the Company’s ownership ranges from 20 to 50 percent, or in instances in which the Company is able to exercise significant influence but not control. The Company also consolidates any variable interest entities (“VIEs”) in which the Company is the primary beneficiary. The Company provides for noncontrolling interests in consolidated subsidiaries for which the Company’s ownership is less than 100 percent.

VIE [Policy Text Block]

A VIE is an entity in which either (a) the equity investment at risk is not sufficient to permit the entity to finance its own activities without additional financial support or (b) the group of holders of the equity investment at risk lack certain characteristics of a controlling financial interest. The primary beneficiary is the entity that has the obligation to absorb a majority of the expected losses or the right to receive the majority of the residual returns. Investments and redemptions or amendments to the governing documents of the respective entities could affect an entity's status as a VIE or the determination of the primary beneficiary. The Company assesses whether entities in which it has an interest are VIEs upon initial involvement and at each reporting date. The Company assesses whether it is the primary beneficiary of any VIEs identified by evaluating its economic interests in the entity held either directly by the Company and its affiliates or indirectly through employees.

Cash and Cash Equivalents [Policy Text Block]

Cash and Cash Equivalents—Cash equivalents consist of short-term, highly liquid investments, which are readily convertible into cash and have original maturities of three months or less.

Due from Broker [Policy Text Block]

Due from Broker—The Company conducts business, primarily through its consolidated seed investments, with brokers for certain of its investment activities. The clearing and custody operations for these investment activities are performed pursuant to agreements with prime brokers. The due from broker balance represents cash and cash equivalents balances at brokers and net receivables and payables for unsettled security transactions.

Investments [Policy Text Block]

Investments—Management of the Company determines the appropriate classification of its investments at the time of purchase and re-evaluates such determination at each statement of financial condition date.

Securities owned and securities sold but not yet purchased are classified as trading securities and are measured at fair value based on quoted market prices, market prices obtained from independent pricing services engaged by management or as determined by the Company’s valuation committee. Unrealized gains and losses are recorded as gain (loss) from trading securities—net reported in the Company’s condensed consolidated statements of operations.

Investments classified as equity investments are accounted for using the equity method, under which the Company recognizes its respective share of the investee’s net income or loss for the period. As of June 30, 2013, the Company's equity investments consisted of interests in funds which measure their underlying investments at fair value and report a net asset value on a recurring basis. The carrying amounts of these investments approximate their fair value.

Investments classified as available-for-sale are comprised of equity securities, investment-grade preferred instruments and investments in Company-sponsored open-end and closed-end mutual funds. These investments are carried at fair value based on quoted market prices or market prices obtained from independent pricing services engaged by management, with unrealized gains and losses, net of tax, reported in accumulated other comprehensive income. The Company periodically reviews each individual security position that has an unrealized loss, or impairment, to determine if that impairment is other than temporary. If the Company believes an impairment of a security position is other than temporary, the loss will be recognized in the Company’s condensed consolidated statements of operations. An other than temporary impairment is generally presumed to have occurred if the available-for-sale investment has an unrealized loss continuously for 12 or more months.

From time to time, the funds consolidated by the Company enter into derivative contracts to hedge market and credit risks of the underlying portfolios utilizing options, total return swaps, credit default swaps and futures contracts. These instruments are measured at fair value with gains and losses recorded as gain (loss) from trading securities—net in the Company's condensed consolidated statements of operations. The fair values of these instruments are recorded in other assets or other liabilities and accrued expenses in the Company's condensed consolidated statements of financial condition.

Additionally, from time to time, the Company enters into foreign exchange contracts to hedge its currency exposure related to client receivables. These instruments are measured at fair value with gains and losses recorded in other non-operating income in the Company's condensed consolidated statements of operations. The fair values of these contracts are recorded in other assets or other liabilities and accrued expenses in the Company's condensed consolidated statements of financial condition.

Goodwill and Intangible Assets [Policy Text Block]

Goodwill and Intangible Assets—Goodwill represents the excess of the cost of the Company’s investment in the net assets of an acquired company over the fair value of the underlying identifiable net assets at the date of acquisition. Goodwill and indefinite lived intangible assets are not amortized but are tested at least annually for impairment by comparing the fair value to their carrying amounts. Finite lived intangible assets are amortized over their useful lives and are tested for impairment whenever events or changes in circumstances indicate that the carrying amount may not be recoverable. See Note 3 for further discussion about the Company’s goodwill and intangible assets.

Redeemable Noncontrolling Interest [Policy Text Block]

Redeemable Noncontrolling Interest—Redeemable noncontrolling interest represents third-party interests in the Company's consolidated entities. This interest is redeemable at the option of the investors and therefore is not treated as permanent equity. Redeemable noncontrolling interest is remeasured at redemption value which approximates the fair value at each reporting period.

Investment Advisory and Administrative Fees [Policy Text Block]

Investment Advisory and Administration Fees—The Company earns revenue by providing asset management services to institutional accounts and to Company-sponsored open-end and closed-end mutual funds. This revenue is earned pursuant to the terms of the underlying advisory contract, and is based on a contractual investment advisory fee applied to the assets in the client’s portfolio, net of applicable waivers. The Company also earns revenue from administration fees paid by certain Company-sponsored open-end and closed-end mutual funds, based on the average assets under management of such funds. This revenue is recognized as such fees are earned.

Distribution and Service Fees [Policy Text Block]

Distribution and Service Fees—Distribution and service fee revenue is earned as the services are performed, based on contractually-predetermined percentages of the average assets under management of the Company-sponsored open-end load mutual funds. Distribution and service fee revenue is recorded gross of any third-party distribution and service fee expense arrangements. The expenses associated with these third-party distribution and service fee arrangements are recorded as incurred.

Portfolio Consulting and Other [Policy Text Block]

Portfolio Consulting and Other—The Company earns portfolio consulting and other fees by: i) providing portfolio consulting services in connection with model-based strategies accounts; ii) earning a licensing fee for the use of the Company's proprietary indices; and iii) providing portfolio monitoring services related to a number of unit investment trusts. This revenue is earned pursuant to the terms of the underlying contract, and the fee schedules for these relationships vary based on the type of services the Company provides for each relationship. This revenue is recognized as such fees are earned.

Stock-based Compensation [Policy Text Block]

Stock-based Compensation—The Company recognizes compensation expense for the grant-date fair value of awards of equity instruments granted to employees. This expense is recognized over the period during which employees are required to provide service. The Company also estimates forfeitures.

Income Taxes [Policy Text Block]

Income Taxes—The Company records the current and deferred tax consequences of all transactions that have been recognized in the condensed consolidated financial statements in accordance with the provisions of the enacted tax laws. Deferred tax assets are recognized for temporary differences that will result in deductible amounts in future years. Deferred tax liabilities are recognized for temporary differences that will result in taxable income in future years. The Company records a valuation allowance, when necessary, to reduce deferred tax assets to an amount that more likely than not will be realized. The effective tax rate for interim periods represents the Company’s best estimate of the effective tax rate expected to be applied to the full fiscal year.

Currency Translation and Transactions [Policy Text Block]

Currency Translation and Transactions—Assets and liabilities of subsidiaries having non-U.S. dollar functional currencies are translated at exchange rates at the applicable condensed consolidated statement of financial condition date. Revenue and expenses are translated at average exchange rates during the period. The gains or losses resulting from translating non-U.S. dollar functional currency into U.S. dollars are included in the Company's condensed consolidated statements of comprehensive income. Gains or losses resulting from non-U.S. dollar currency transactions are included in other non-operating income in the condensed consolidated statements of operations.

Comprehensive Income, Policy [Policy Text Block]

Comprehensive Income—The Company reports all changes in comprehensive income in the condensed consolidated statements of comprehensive income. Comprehensive income includes net income or loss attributable to common shareholders, unrealized gains and losses from available-for-sale securities (net of tax), foreign currency translation gains and losses (net of tax) and reclassification to statements of operations of gains and losses from available-for-sale securities (net of tax).

Recently Issued Accounting Pronouncements [Policy Text Block]

Recently Issued Accounting Pronouncements—In July 2013, the Financial Accounting Standards Board (“FASB”) issued new guidance on the presentation of unrecognized tax benefits when a net operating loss carryforward, a similar tax loss, or a tax credit carryfoward exists. An entity is required to present an unrecognized tax benefit, or a portion of an unrecognized tax benefit, in the financial statements as a reduction to a deferred tax asset for a net operating loss carryforward, a similar tax loss, or a tax credit carryforward unless a net operating loss carryforward, a similar tax loss or a tax credit carryforward is not available as of the reporting date or the entity does not intend to use the deferred tax asset for this purpose (provided that the tax law permits a choice). This new guidance will be effective for the Company's first quarter of 2014. The Company does not anticipate that the adoption of this new guidance will have a material impact on the Company's condensed consolidated financial statements.

In February 2013, the FASB issued new guidance requiring an entity to provide information about the amounts reclassified out of accumulated other comprehensive income by component. An entity is also required to present, either on the face of the statement where net income is presented or in the notes, significant amounts reclassified out of accumulated other comprehensive income by the respective line items of net income. This new guidance was effective for the Company's first quarter of 2013. The adoption of this new guidance did not have a material impact on the Company's condensed consolidated financial statements.

In January 2013, the FASB issued new guidance to clarify the scope of the offsetting disclosures associated with derivative and hedging transactions, including bifurcated embedded derivatives, repurchase agreements and reverse repurchase agreements, and securities borrowing and securities lending transactions. This new guidance was effective for the Company's first quarter of 2013. The adoption of this new guidance did not have a material impact on the Company's condensed consolidated financial statements.

In October 2012, the FASB issued new guidance to make certain technical corrections to the FASB Accounting Standards Codification ("Codification"), which identifies when the use of fair value should be linked to the definition of fair value in Codification Topic 820, Fair Value Measurements and Disclosures (“ASC 820”). The amendments affect various Codification topics and include source literature amendments, guidance clarification and reference corrections and relocated guidance. The amendments that will not have transition guidance were effective upon issuance and the amendments that are subject to the transition guidance were effective for the Company's first quarter of 2013. The adoption of this new guidance did not have a material impact on the Company's condensed consolidated financial statements.

In July 2012, the FASB issued new guidance to simplify how entities test indefinite-lived intangible assets for impairment. The new guidance permits an entity to first assess qualitative factors to determine whether it is more likely than not that the fair value of an indefinite-lived intangible asset is less than its carrying amount as a basis for determining whether it is necessary to perform the second step to measure the amount of the impairment loss, if any. This new guidance was effective for the Company's first quarter of 2013. The adoption of this new guidance did not have a material impact on the Company's condensed consolidated financial statements.

In December 2011, the FASB issued new guidance to create new disclosure requirements about the nature of an entity's rights of offset and related arrangements associated with its financial instruments and derivative instruments. This new guidance was effective for the Company's first quarter of 2013. The adoption of this new guidance did not have a material impact on the Company's condensed consolidated financial statements.

Fair Value of Financial Instruments, Policy [Policy Text Block]

Valuation Techniques

In certain instances, debt and equity securities are valued on the basis of prices from an orderly transaction between market participants provided by reputable brokers/dealers or pricing services. In determining the value of a particular investment, pricing services may use information with respect to transactions in such investments, broker quotes, pricing matrices, market transactions in comparable investments and various relationships between investments. As part of its independent price verification process, the Company selectively performs detailed reviews of valuations provided by broker/dealers or pricing services.

Foreign exchange contracts are valued by interpolating a value using the spot foreign exchange rate and forward points (based on the spot rate and currency interest rate differentials), which are all inputs that are observable in active markets (level 2).

In the absence of observable market prices, the Company values its investments using valuation methodologies applied on a consistent basis. For some investments, little market activity may exist; management's determination of fair value is then based on the best information available in the circumstances, and may incorporate management's own assumptions and involves a significant degree of judgment, taking into consideration a combination of internal and external factors. Such investments are valued on a quarterly basis, taking into consideration any changes in key inputs and changes in economic and other relevant conditions, and valuation models are updated accordingly. The valuation process also includes a review by the Company's valuation committee which is primarily comprised of senior members from various departments within the Company, including investment management. The valuation committee provides independent oversight of the valuation policies and procedures.

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Concentration of Credit Risk

6 Months Ended

Jun. 30, 2013

Concentration of Credit Risk [Abstract]

Concentration of Credit Risk [Text Block]

Concentration of Credit Risk

The Company's cash is principally on deposit with three major financial institutions. The Company is subject to credit risk should these financial institutions be unable to fulfill their obligations.

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Document and Entity Information Document	6 Months Ended
	Jun. 30, 2013	Aug. 06, 2013
Entity Information [Line Items]
Entity Registrant Name	COHEN & STEERS INC
Entity Central Index Key	0001284812
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Document Type	10-Q
Document Period End Date	Jun. 30, 2013
Document Fiscal Year Focus	2013
Document Fiscal Period Focus	Q2
Amendment Flag	false
Entity Common Stock, Shares Outstanding		44,241,439

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Subsequent Events

6 Months Ended

Jun. 30, 2013

Subsequent Events [Abstract]

Subsequent Event [Text Block]

Subsequent Events

The Company has evaluated the need for disclosures and/or adjustments resulting from subsequent events through the date the financial statements were issued. Other than the items described below, the Company determined that there were no additional subsequent events that necessitated disclosures and/or adjustments.

On August 7, 2013, CNS declared quarterly dividend on its common stock in the amount of $0.20 per share. The dividend will be payable on September 27, 2013 to stockholders of record at the close of business on September 6, 2013.