FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 INITIAL STATEMENT OF 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 *   Huang Charlie X. 2. Date of Event Requiring Statement (Month/Day/Year) 10/15/2008 3. Issuer Name and Ticker or Trading Symbol CADENCE DESIGN SYSTEMS INC [CDNS] (Last) (First) (Middle) 2655 SEELY AVENUE, BLDG 5 4. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner _____ Officer (give title below) _____ Other (specify below) Sr.VP,Bus.Dev., Chief of Staff 5. If Amendment, Date Original Filed(Month/Day/Year) (Street) SAN JOSE, CA 95134 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 Beneficially Owned

1.Title of Security (Instr. 4) 2. Amount of Securities Beneficially Owned (Instr. 4) 3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5) 4. Nature of Indirect Beneficial Ownership (Instr. 5) Common Stock 40,000 D   Common Stock 750 I Restricted stock granted by the issuer to Reporting Person's spouse Common Stock 420 I As Custodian for Minor Children (1) Common Stock 144,488 I Held by Trust (2)

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.			SEC 1473 (7-02)
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Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Non-qualified Stock Option (right to buy)	  (3)	03/09/2011	Common Stock	20,000	$ 24	D	Â
Non-qualified Stock Option (right to buy)	  (4)	09/21/2011	Common Stock	53,500	$ 15.485	D	Â
Non-qualified Stock Option (right to buy)	  (5)	07/31/2012	Common Stock	8,000	$ 12.625	D	Â
Non-qualified Stock Option (right to buy)	  (6)	02/15/2016	Common Stock	50,000	$ 16.8	D	Â
Non-qualified Stock Option (right to buy)	  (7)	05/15/2014	Common Stock	50,000	$ 21.58	D	Â
Non-qualified Stock Option (right to buy)	  (8)	02/01/2015	Common Stock	60,000	$ 10.61	D	Â
Non-Qualified Stock Option (right to buy)	  (9)	02/07/2013	Common Stock	5,000	$ 9.585	D	Â
Non-qualified Stock Option (right to buy)	  (10)	10/05/2011	Common Stock	3,500	$ 16.945	I	Option is held by spouse of the Reporting Person.
Non-qualified Stock Option (right to buy)	  (11)	07/31/2012	Common Stock	459	$ 12.625	I	Option is held by spouse of the Reporting Person.

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Huang Charlie X. 2655 SEELY AVENUE, BLDG 5 SAN JOSE, CA 95134	Â	Â	  Sr.VP,Bus.Dev., Chief of Staff	Â

Signatures

James J. Cowie, Attorney-in-Fact for Charlie X. Huang		10/24/2008
**Signature of Reporting Person		Date

Explanation of Responses:

*	If the form is filed by more than one reporting person, see Instruction 5(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)	These Securities are held in custodial accounts by spouse of Reporting Person for the minor children of Reporting Person and Reporting Person's spouse.
(2)	These securites are held by Huang-Zhang Trust U/A DTD 6/12/96, of which Reporting Person and Reporting Person's spouse are trustees.
(3)	Option was granted on March 9, 2001 and is fully vested.
(4)	Option was granted on September 21, 2001 and is fully vested.
(5)	Option was granted on July 31, 2002 and is fully vested.
(6)	Option was granted on February 15, 2006 and vests at a rate of 1/48th per month thereafer.
(7)	Option was granted on May 15, 2007 and vests at a rate of 1/48th per month thereafer.
(8)	Option was granted on February 1, 2008 and vests at a rate of 1/48th per month thereafter.
(9)	Option was granted on February 7, 2003 and is fully vested.
(10)	Option was granted to Susan Zhang, spouse of the Reporting Person, by the Issuer and Mrs. Zhang's employer, on October 5, 2001 and is fully vested.
(11)	Option was granted to Susan Zhang, spouse of the Reporting Person, by the Issuer and Mrs. Zhang's employer, on July 31, 2002 and is fully vested.

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