AllianceBernstein Holding (AB) 10-Q 2005 Q2 Quarterly report

EXHIBIT 32.1

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report of Alliance Capital Management Holding L.P. (the “Company”) on Form 10-Q for the period ended June 30, 2005 to be filed with the Securities and Exchange Commission on or about August 5, 2005 (the “Report”), I, Lewis A. Sanders, Chief Executive Officer of Alliance Capital Management Corporation, general partner of the Company, certify, pursuant to 18 U.S.C. § 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

(1)The Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2)The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Date: August 4, 2005	/s/ Lewis A. Sanders
	Lewis A. Sanders
	Chief Executive Officer
	Alliance Capital Management Corporation