- Initial Statement of Beneficial Ownership (3)

FORM 3	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES	OMB APPROVAL OMB Number: 3235-0104 Expires: November 30, 2011 Estimated average burden hours per response... 0.5
	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

1. Name and Address of Reporting Person ^*

Kingdom Ridge Capital, LLC

2. Date of Event Requiring Statement (MM/DD/YYYY) 11/3/2011

3. Issuer Name and Ticker or Trading Symbol

APPLIED MICRO CIRCUITS CORP [AMCC]

(Last) (First) (Middle)

81 MAIN STREET, SUITE 209,

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

_____ Director ___ X ___ 10% Owner
_____ Officer (give title below) _____ Other (specify below)

(Street)

WHITE PLAINS, NY 10601

(City) (State) (Zip)

5. If Amendment, Date Original Filed (MM/DD/YYYY)

6. Individual or Joint/Group Filing (Check Applicable Line)

___ Form filed by One Reporting Person
_ X _ Form filed by More than One Reporting Person

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	7250000	D ⁽¹⁾
Common Stock	7250000	I	See Footnote ⁽²⁾
Common Stock	30000	D ⁽³⁾

*Table II - Derivative Securities Beneficially Owned ( e.g.* , puts, calls, warrants, options, convertible securities)**
1. Title of Derivate Security (Instr. 4)	2. Date Exercisable and Expiration Date (MM/DD/YYYY)		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)
1. Title of Derivate Security (Instr. 4)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	4. Conversion or Exercise Price of Derivative Security		6. Nature of Indirect Beneficial Ownership (Instr. 5)

Explanation of Responses:
( 1)	The reported securities are directly owned by Kingdom Ridge Capital Master Fund, Ltd., which is a reporting person. Kingdom Ridge Capital, LLC and Christopher Zepf may be deemed to indirectly beneficially own the securities directly held by Kingdom Ridge Capital Master Fund, Ltd. See footnote 2.
( 2)	The reported securities may be deemed indirectly beneficially owned by Kingdom Ridge Capital, LLC as investment manager of Kingdom Ridge Capital Master Fund, Ltd. The reported securities may also be deemed indirectly beneficially owned by Christopher Zepf as Managing Principal of Kingdom Ridge Capital, LLC. Kingdom Ridge Capital, LLC and Christopher Zepf disclaim beneficial ownership of the reported securities except to the extent of their pecuniary interest therein, and this report shall not be deemed an admission that such Reporting Persons are the beneficial owners of the securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.
( 3)	The reported securities are directly owned in personal accounts by Christopher Zepf, who is a reporting person.

Reporting Owners
Reporting Owner Name / Address	Relationships
Reporting Owner Name / Address	Director	10% Owner	Officer	Other
Kingdom Ridge Capital, LLC 81 MAIN STREET, SUITE 209 WHITE PLAINS, NY 10601		X
ZEPF CHRISTOPHER C/O KINGDOM RIDGE CAPITAL, LLC 81 MAIN STREET, SUITE 209 WHITE PLAINS, NY 10601		X
KINGDOM RIDGE CAPITAL MASTER FUND, LTD. GARDENIA COURT, SUITE 3307 45 MARKET STREET, CAMANA BAY GRAND CAYMAN, E9 KY1-1103		X

Signatures
Kingdom Ridge Capital, LLC, By: /s/ Christopher Zepf, Managing Principal		11/7/2011
^** Signature of Reporting Person		Date
/s/ Christopher Zepf		11/7/2011
^** Signature of Reporting Person		Date
Kingdom Ridge Capital Master Fund, Ltd., By: /s/ Christopher Zepf, Director		11/7/2011
^** Signature of Reporting Person		Date

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
*	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).
Note:	File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB control number.