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MFS(R) INSTITUTIONAL TRUST
MFS(R) Institutional Emerging Markets Debt Fund
Supplement to the Current Prospectus
The description of portfolio managers under the "Management of the
Funds - Investment Adviser" section is hereby restated as follows:
Emerging Markets Fund - Matthew W. Ryan, a Vice President of MFS, is the
portfolio manager of the Fund. Mr. Ryan has been
employed as a portfolio manager of the Fund since
July 24, 1998 and as an analyst by the Adviser since
April 1997. From July 1993 to March 1997, Mr. Ryan
worked as an economist with the U.S. Executive
Director's Office of the International Monetary
Fund. Mr. Ryan is also a Chartered Financial Analyst.
The date of this Supplement is February 25, 1999.
