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 on Form 10-Q for the quarterly period ended March 31, 2012 of Merrill Lynch & Co., Inc. (the “registrant”) as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Thomas K. Montag, Chief Executive Officer of the registrant, certify, pursuant to 18 U.S.C. section 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 registrant.

Date: May 3, 2012

	/s/  THOMAS K. MONTAG
	Thomas K. Montag Chief Executive Officer