<PAGE>
BINGHAM DANA LLP
150 FEDERAL STREET
BOSTON, MASSACHUSETTS 02110-1726
May 5, 1999
VIA EDGAR
Securities and Exchange Commission
Division of Investment Management
Judiciary Plaza
450 Fifth Street, N.W.
Washington, D.C. 20549
Re: CGM Trust
Registration Statement on Form N-1A
(File Nos. 2-10653 and 811-82)
Ladies and Gentlemen:
Pursuant to Rule 497(j) under the Securities Act of 1933, as amended,
CGM Trust, a Massachusetts business trust (the "Trust"), hereby certifies that
the forms of the Prospectuses and Statements of Additional Information that
would have been filed by the Trust pursuant to Rule 497(c) upon the
effectiveness of Post-Effective Amendment Number 88 to the Trust's registration
statement on Form N-1A (the "Amendment") would not have differed from those
contained in the Amendment. The Amendment, which was filed via the EDGAR system
on April 30, 1999, is the most recent amendment to the Trust's registration
statement relating to each of the series of the Trust.
Please call the undersigned at (617) 951-8383 or Jeremiah J. Bresnahan,
Jr. at (617) 951-8724 or Thomas John Holton at (617) 951-8587, with any
questions relating to this letter.
Sincerely,
Jennifer H. Hurford