SECTION 906 CERTIFICATION

     Pursuant to 18 U.S.C. Section 1350, each of the undersigned officers of
Calamos Advisors Trust (the "Company"), hereby certifies, to his knowledge, that
the Company's Report on Form N-CSR for the year ended December 31, 2006 (the
"Report") fully complies with the requirements of Section 13(a) or 15(d), as
applicable, of the Securities Exchange Act of 1934 and that the information
contained in the Report fairly presents, in all material respects, the financial
condition and results of operations of the Company.

Date: February 14, 2007


/s/ John P. Calamos, Sr.
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Name: John P. Calamos, Sr.
Title: Principal Executive Officer


/s/ Patrick H. Dudasik
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Name: Patrick H. Dudasik
Title: Principal Financial Officer

This certificate is furnished pursuant to the requirements of Form N-CSR and
shall not be deemed "filed" for purposes of section 18 of the Securities
Exchange Act of 1934, or otherwise subject to the liability of that section, and
shall not be deemed to be incorporated by reference into any filing under the
Securities Act of 1933 or the Exchange Act of 1934.

A signed original of this certificate required by Section 906 has been provided
to Calamos Advisors Trust and will be retained by Calamos Advisors Trust and
furnished to the Securities and Exchange Commission or staff upon request.