Exhibit 32.01

                            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 of Citigroup Global Markets
Holdings Inc. (the "Company") for the quarterly period ended March 31, 2005, as
filed with the Securities and Exchange Commission on the date hereof (the
"Report"), Robert Druskin, as Chief Executive Officer of the Company, and John
C. Morris, as Chief Financial Officer of the Company, each hereby certifies,
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
Company.

/s/ Robert Druskin
------------------------
Robert Druskin
Chief Executive Officer
May 12, 2005

/s/ John C. Morris
------------------------
John C. Morris
Chief Financial Officer
May 12, 2005

This certification accompanies each Report pursuant to Section 906 of the
Sarbanes-Oxley Act of 2002 and shall not, except to the extent required by the
Sarbanes-Oxley Act of 2002, be deemed filed by the Company for purposes of
Section 18 of the Securities Exchange Act of 1934, as amended.

A signed original of this written statement required by Section 906 has been
provided to the Company and will be retained by the Company and furnished to the
Securities and Exchange Commission or its staff upon request.