SCHEDULE 13G/A Amendment No. 1 Archipelago Holdings Incorporated Common Stock Cusip #03957A104 Cusip #03957A104 Item 1: Reporting Person: Fidelity Non Profit Management Foundation Item 4: Delaware Item 5: 720,640 Item 6: 0 Item 7: 720,640 Item 8: 0 Item 9: 720,640 Item 11: 1.524% Item 12: CO SCHEDULE 13G - TO BE INCLUDED IN STATEMENTS FILED PURSUANT TO RULE 13d-1(c) or 13d-2(d) Item 1(a). Name of Issuer: Archipelago Holdings Incorporated Item 1(b). Name of Issuer's Principal Executive Offices: 100 South Wacker Drive Suite 1800 Chicago, IL 60606 Item 2(a). Name of Person Filing: Fidelity Non-Profit Management Foundation Item 2(b). Address or Principal Business Office or, if None, Residence: 82 Devonshire Street, F9A Boston, Massachusetts 02109 Item 2(c). Citizenship: Not applicable Item 2(d). Title of Class of Securities: Common Stock Item 2(e). CUSIP Number: 03957A104 Item 3. This statement is filed pursuant to Rule 13d-1(c) or 13d-2(d). Item 4. Ownership (a) Amount Beneficially Owned: 720,640 (b) Percent of Class: 1.524% (c) Number of shares as to which such person has: (i) sole power to vote or to direct the vote: 720,640 (ii) shared power to vote or to direct the vote: 0 (iii) sole power to dispose or to direct the disposition of: 720,640 (iv) shared power to dispose or to direct the disposition of: 0 Item 5. Ownership of Five Percent or Less of a Class. If this statement is being filed to report the fact that as of the date hereof, the reporting person has ceased to be the beneficial owner of more than five percent of the class of securities, check the following (X). Item 6. Ownership of More than Five Percent on Behalf of Another Person. Not applicable. Item 7. Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on By the Parent Holding Company. Not applicable. Item 8. Identification and Classification of Members of the Group. Not Applicable. Item 9. Notice of Dissolution of Group. Not applicable. Item 10. Certification. By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect. Signature After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct. February 14, 2006 Date /s/ Jeffrey P. Resnik Signature Jeffrey P. Resnik Treasurer