Edgar Filing: RIVIERA HOLDINGS CORP

Ownership Submission

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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3235-0287

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(Print or Type Responses)

1. Name and Address of Reporting Person ^*

DE SHAW LAMINAR PORTFOLIOS LLC

2. Issuer Name and Ticker or Trading Symbol
RIVIERA HOLDINGS CORP [RIV]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

_____ Director	__X__ 10% Owner
_____ Officer (give title below)	__X__ Other (specify below)
See Footnote 1.

(Last)

(First)

(Middle)

39TH FLOOR, TOWER 45, 120 WEST FORTY-FIFTH STREET

3. Date of Earliest Transaction (Month/Day/Year)
03/31/2006

(Street)

NEW YORK, NY 10036

4. If Amendment, Date Original Filed(Month/Day/Year)

6. Individual or Joint/Group Filing(Check Applicable Line)
___ Form filed by One Reporting Person
_X_ 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	03/31/2006		S		50,000	D	$ 16.95	1,219,900	D ⁽¹⁾

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

(A)

(D)

Date Exercisable

Expiration Date

Title

Amount or Number of Shares

Reporting Owners

Reporting Owner Name / Address	Relationships
Reporting Owner Name / Address	Director	10% Owner	Officer	Other
DE SHAW LAMINAR PORTFOLIOS LLC 39TH FLOOR, TOWER 45 120 WEST FORTY-FIFTH STREET NEW YORK, NY 10036		X		See Footnote 1.
SHAW D E & CO L P /NY/ 39TH FLOOR, TOWER 45 120 WEST FORTY-FIFTH STREET NEW YORK, NY 10036		X		See Footnote 1.
D E SHAW & CO LLC 39TH FLOOR, TOWER 45 120 WEST FORTY-FIFTH STREET NEW YORK, NY 10036		X		See Footnote 1.
SHAW DAVID E 39TH FLOOR, TOWER 45 120 WEST FORTY-FIFTH STREET NEW YORK, NY 10036		X		See Footnote 1.

Signatures

D. E. Shaw Laminar Portfolios, L.L.C., By: D. E. Shaw & Co., L.L.C., as managing member, By: /s/ Julius Gaudio, Managing Director		04/04/2006
^**Signature of Reporting Person		Date
D. E. Shaw & Co., L.P., By: /s/ Julius Gaudio, Managing Director		04/04/2006
^**Signature of Reporting Person		Date
D. E. Shaw & Co., L.L.C., By: /s/ Julius Gaudio, Managing Director		04/04/2006
^**Signature of Reporting Person		Date
David E. Shaw, By: /s/ Julius Gaudio, Attorney-in-Fact for David E. Shaw		04/04/2006
^**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)	As noted above, on March 31, 2006, D. E. Shaw Laminar Portfolios, L.L.C. ("Laminar") disposed of 50,000 shares of the common stock, par value $0.001 per share (the "Common Stock"), of the Issuer to which this form relates. As a result of this transaction, the Reporting Owners are no longer subject to Section 16. The Common Stock is now held or managed directly as follows: (i) Laminar holds 1,194,500 shares; (ii) D. E. Shaw Valence Portfolios, L.L.C. ("Valence") holds 25,200 shares; and (iii) 200 shares are under the management of D. E. Shaw Investment Management, L.L.C. ("DESIM"), which has dispositive control over, but no voting rights with respect to, the shares.

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