Mail Stop 4561 December 16, 2005 By U.S. Mail and facsimile to (212) 401 1012 David P. Warren Chief Financial Officer The Nasdaq Stock Market Inc. One Liberty Plaza New York, NY 10006 Re: The Nasdaq Stock Market Inc. Form 10-K for the Fiscal Year Ended December 31, 2004 Forms 10-Q for the Quarters Ended March 31, 2005 and June 30, 2005 File No. 000-32651 Dear Mr. Warren: We have completed our review of your Form 10-K and related filings and have no further comments at this time. Sincerely, Joyce Sweeney Accounting Branch Chief David P. Warren The Nasdaq Stock Market Inc. October 27, 2005 Page 1