<PAGE>
ACORN INVESTMENT TRUST
227 West Monroe Street
Suite 3000
Chicago, Illinois 60606
December 30, 1997
BY EDGAR
Securities and Exchange Commission
450 Fifth Street, N.W.
Washington, D.C. 20549-1004
Acorn Investment Trust
1933 Act Registration No. 2-34223
1940 Act Registration No. 811-1829
Ladies and Gentlemen:
In accordance with Rule 497(j) of Regulation C under the Securities Act of
1933, Acorn 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
December 30, 1997.
Very truly yours,
ACORN INVESTMENT TRUST
/s/ Merrillyn J. Kosier
Merrillyn J. Kosier
Senior Vice President and Secretary
