Exhibit 32.1

Certification of CEO and CFO 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 optionsXpress Holdings, Inc. (the “Company”) for the period ending March 31, 2011 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), David A. Fisher, as Chief Executive Officer of the Company, and Adam J. DeWitt, as Chief Financial Officer of the Company, each hereby certifies, pursuant to 18 U.S.C. § 1350, as adopted pursuant to § 906 of the Sarbanes-Oxley Act of 2002, that, to the best of his knowledge:

(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/ DAVID A. FISHER

Name: David A. Fisher
Title: Chief Executive Officer
Date: May 10, 2011

/s/ ADAM J. DEWITT

Name: Adam J. DeWitt
Title: Chief Financial Officer
Date: May 10, 2011

This certification accompanies the Report pursuant to § 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 §18 of the Securities Exchange Act of 1934, as amended.

A signed original of this written statement required by § 906 of the Sarbanes-Oxley Act of 2002 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.

optionsXpress Holdings, Inc. 10-Q