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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(Print or Type Responses)
1. Name and Address of Reporting Person *
ATTICUS CAPITAL LLC
  2. Issuer Name and Ticker or Trading Symbol
ARCHIPELAGO HOLDINGS INC [AX]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director __X__ 10% Owner
_____ Officer (give title below) _____ Other (specify below)
(Last)
(First)
(Middle)
152 WEST 57TH STREET, 45TH FLOOR
3. Date of Earliest Transaction (Month/Day/Year)
10/21/2005
(Street)

NEW YORK, NY 10019
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

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
Total Return Equity Swap $ 40.759 10/21/2005   J/K(1)   1     (2)   (2) Common Stock 300,000 (1) 1 (13) I See Footnote (3)
Total Return Equity Swap $ 43.2901 10/24/2005   J/K(4)   1     (2)   (2) Common Stock 300,000 (4) 2 (13) I See Footnote (3)
Total Return Equity Swap $ 44.0139 10/25/2005   J/K(5)   1     (2)   (2) Common Stock 100,000 (5) 3 (13) I See Footnote (3)
Total Return Equity Swap $ 47.5334 10/26/2005   J/K(6)   1     (2)   (2) Common Stock 150,000 (6) 4 (13) I See Footnote (3)
Total Return Equity Swap $ 46.9629 10/27/2005   J/K(7)   1     (2)   (2) Common Stock 100,000 (7) 5 (13) I See Footnote (3)
Total Return Equity Swap $ 46.5561 10/28/2005   J/K(8)   1     (2)   (2) Common Stock 100,000 (8) 6 (13) I See Footnote (3)
Total Return Equity Swap $ 48.0173 10/31/2005   J/K(9)   1     (2)   (2) Common Stock 136,000 (9) 7 (13) I See Footnote (3)
Total Return Equity Swap $ 47.4488 11/01/2005   J/K(10)   1     (2)   (2) Common Stock 88,900 (10) 8 (13) I See Footnote (3)
Total Return Equity Swap $ 48.8311 11/02/2005   J/K(11)   1     (2)   (2) Common Stock 81,654 (11) 9 (13) I See Footnote (3)
Total Return Equity Swap $ 51.2302 11/03/2005   J/K(12)   1     (2)   (2) Common Stock 162,660 (12) 10 (13) I See Footnote (3)

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
ATTICUS CAPITAL LLC
152 WEST 57TH STREET
45TH FLOOR
NEW YORK, NY 10019
    X    
BARAKETT TIMOTHY R
152 WEST 57TH STREET
45TH FLOOR
NEW YORK, NY 10019
    X    

Signatures

 Atticus Capital, L.L.C., by Timothy R. Barakett, Managing Member, by John F. Brown, attorney-in-fact   11/08/2005
**Signature of Reporting Person Date

 Timothy R. Barakett, by John F. Brown, attorney-in-fact   11/08/2005
**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) Effective October 21, 2005, various Funds and Accounts (as defined in Note 3) entered into long positions in total return equity swaps with a securities broker in respect of an aggregate of 300,000 notional shares of Common Stock at a price of $40.7590 per notional share.
(2) Not applicable. The total return equity swaps will settle one year from the date of entering into the swap, except as otherwise settled or extended, or as otherwise provided in accordance with the terms of the related ISDA master agreement or annexes thereto.
(3) Mr. Barakett, who is an additional Reporting Person, is the Chairman, Chief Executive Officer and Managing Member of Atticus Capital, L.L.C., a Delaware limited liability company ("Atticus Capital"). Atticus Capital and certain of its affiliated entities (collectively, the "Atticus Entities") act as advisers for various investment funds (the "Funds") and managed accounts (the "Accounts"). Based on his relationship with the Atticus Entities, Mr. Barakett may be deemed to be a beneficial owner of the Securities owned by the Funds and the Accounts for purposes of Rule 16a-1(a)(1) under the Securities Exchange Act of 1934 (the "Exchange Act"). Mr. Barakett and Atticus Capital disclaim beneficial ownership within the meaning of Rule 16a-1(a)(2) under the Exchange Act in the Securities owned by the Funds and the Accounts except to the extent, if any, of their pecuniary interest therein.
(4) Effective October 24, 2005, various Funds and Accounts entered into long positions in total return equity swaps with a securities broker in respect of an aggregate of 300,000 notional shares of Common Stock at a price of $43.2901 per notional share.
(5) Effective October 25, 2005, various Funds and Accounts entered into long positions in total return equity swaps with a securities broker in respect of an aggregate of 100,000 notional shares of Common Stock at a price of $44.0139 per notional share.
(6) Effective October 26, 2005, various Funds and Accounts entered into long positions in total return equity swaps with a securities broker in respect of an aggregate of 150,000 notional shares of Common Stock at a price of $47.5334 per notional share.
(7) Effective October 27, 2005, various Funds and Accounts entered into long positions in total return equity swaps with a securities broker in respect of an aggregate of 100,000 notional shares of Common Stock at a price of $46.9629 per notional share.
(8) Effective October 28, 2005, various Funds and Accounts entered into a long position in total return equity swaps with a securities broker in respect of an aggregate of 100,000 notional shares of Common Stock at a price of $46.5561 per notional share.
(9) Effective October 31, 2005, various Funds and Accounts entered into a long position in total return equity swaps with a securities broker in respect of an aggregate of 136,000 notional shares of Common Stock at a price of $48.0173 per notional share.
(10) Effective November 1, 2005, various Funds and Accounts entered into long positions in total return equity swaps with a securities broker in respect of an aggregate of 88,900 notional shares of Common Stock at a price of $47.4488 per notional share.
(11) Effective November 2, 2005, various Funds and Accounts entered into long positions in total return equity swaps with a securities broker in respect of an aggregate of 81,654 notional shares of Common Stock at a price of $48.8311 per notional share.
(12) Effective November 3, 2005, various Funds and Accounts entered into long positions in total return equity swaps with a securities broker in respect of an aggregate of 162,660 notional shares of Common Stock at a price of $51.2302 per notional share.
(13) Refers to total return equity swaps reported here.

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