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Filed Pursuant to Rule 497(e)
Registration File No.: 2-82510
811-3692
SUPPLEMENT TO THE PROSPECTUS OF
MORGAN STANLEY DEAN WITTER VARIABLE INVESTMENT SERIES,
CLASS Y SHARES
DATED NOVEMBER 3, 2000
The paragraph pertaining to the High Yield Portfolio of the Fund in the
section of the Prospectus titled "PORTFOLIO MANAGEMENT" is hereby replaced by
the following:
HIGH YIELD PORTFOLIO -- Steven F. Esser, Robert E. Angevine, Gordon W.
Loery and Deanna L. Loughnane have been the primary portfolio managers of
the Portfolio since January 2001. Mr. Esser is a Managing Director of the
Investment Manager as well as a Managing Director of Miller Anderson &
Sherrerd, LLP ("MAS"), an affiliate of the Investment Manager. Mr.
Angevine is a Principal of the Investment Manager as well as a Principal
of MAS. Mr. Loery is a Principal of the Investment Manager as well as a
Principal of MAS. Messrs. Esser, Angevine and Loery have been managing
portfolios for MAS and investment advisory affiliates of MAS for over five
years. Ms. Loughnane is a Principal of the Investment Manager as well as a
Principal of MAS. Ms. Loughnane has been managing portfolios for MAS and
investment advisory affiliates of MAS since 1997, prior to which time she
was a Vice President and Senior Corporate Bond Analyst for Putnam
Investments (1993-1997).
January 8, 2001
