FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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(Print or Type Responses)

1. Name and Address of Reporting Person * STEERS ROBERT HAMILTON   2. Issuer Name and Ticker or Trading Symbol COHEN & STEERS INC [CNS] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner _____ Officer (give title below) _____ Other (specify below) Co-Chairman,Co-Chief Executive (Last) (First) (Middle) 280 PARK AVENUE, 10TH FLOOR 3. Date of Earliest Transaction (Month/Day/Year) 01/29/2010 (Street) NEW YORK, NY 10017 4. If Amendment, Date Original Filed(Month/Day/Year) 6. Individual or Joint/Group Filing(Check Applicable Line) _X_ Form filed by One Reporting Person ___ Form filed by More than One Reporting Person (City) (State) (Zip) Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned

1.Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Stock               950,920 I By the Robert H. Steers Family Tust (1) Common Stock               4,000,000 I By the Robert H. Steers Qualified Annuity Trust (2) Common Stock 01/29/2010   A   61,064 (3) A $ 0 7,028,242 D

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security (Instr. 3)

2. Conversion or Exercise Price of Derivative Security

3. Transaction Date (Month/Day/Year)

3A. Deemed Execution Date, if any (Month/Day/Year)

4. Transaction Code (Instr. 8)

5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5)

6. Date Exercisable and Expiration Date (Month/Day/Year)

7. Title and Amount of Underlying Securities (Instr. 3 and 4)

8. Price of Derivative Security (Instr. 5)

9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)

10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4)

11. Nature of Indirect Beneficial Ownership (Instr. 4)

Code

V

(A)

(D)

Date Exercisable

Expiration Date

Title

Amount or Number of Shares

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
STEERS ROBERT HAMILTON 280 PARK AVENUE, 10TH FLOOR NEW YORK, NY 10017			Co-Chairman,Co-Chief Executive

Signatures

Salvatore Rappa, Attorney-in-Fact for Robert Steers		02/02/2010
**Signature of Reporting Person		Date

Explanation of Responses:

*	If the form is filed by more than one reporting person, see Instruction 4(b)(v).
**	Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1)	Shares owned by the Robert H. Steers Family Trust for the benefit of Mr. Steers' family. Mr. Steers' spouse serves as trustee of the trust. Mr. Steers disclaims beneficial ownership of these shares, and the filing of this report is not an admission that Mr. Steers is the beneficial owner of these shares for the purposes of Section 16 or for any other purpose.
(2)	Shares owned by the Robert H. Steers Qualified Annuity Trust, of which Mr. Steers serves as trustee. Mr. Steers disclaims beneficial ownership of these shares, and the filing of this report is not an admission that Mr. Steers is the beneficial owner of these shares for the purposes of Section 16 or for any other purpose.
(3)	Restricted stock units that generally vest over five years.

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