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 Merrill
Lynch & Co., Inc. (the “Company”) on
Form 10-Q
for the period ended June 29, 2007 as filed with the
Securities and Exchange Commission on the date hereof (the
“Report”), I, E. Stanley O’Neal, Chairman of
the Board and Chief Executive Officer of the Company, certify,
pursuant to 18 U.S.C. section 1350, as adopted
pursuant to Section 906 of the Sarbanes-Oxley Act of 2002,
that:
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(1)
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The Report fully complies with the requirements of Section 13(a)
or 15(d) of the Securities Exchange Act of 1934; and
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(2)
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The information contained in the Report fairly presents, in all
material respects, the financial condition and results of
operations of the Company.
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E. Stanley O’Neal
Chairman of the Board and
Chief Executive Officer
Dated: August 3, 2007
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