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CALAMOS INVESTMENT TRUST
1111 East Warrenville Road
Naperville, Illinois 60563-1493
August 3, 1998
BY EDGAR
Securities and Exchange Commission
450 Fifth Street, N.W.
Washington, D.C. 20549-1004
Calamos Investment Trust
1933 Act Registration No. 33-19228
1940 Act Registration No. 811-5443
Ladies and Gentlemen:
In accordance with Rule 497(j) of Regulation C under the Securities Act of
1933, Calamos Investment Trust ( the "Trust") certifies that:
a. the form of prospectus and statement of additional information that
would have been filed under paragraph (c) of Rule 497 would not have
differed from that contained in the most recent post-effective
amendment to the Trust's registration statement on Form N-1A; and
b. the text of the most recent post-effective amendment to the Trust's
registration statement was filed with the Commission via EDGAR on July
29, 1998.
Very truly yours,
CALAMOS INVESTMENT TRUST
/s/ James S. Hamman, Jr.
______________________________
By: James S. Hamman, Jr.
Its: Secretary
