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MFS(R) INTERMEDIATE INVESTMENT GRADE BOND FUND
MFS(R) RESEARCH BOND 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:
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Investment Grade Bond Fund James J. Calmas, a Vice President of the Adviser, is the portfolio
manager of the Fund. Mr. Calmas has been employed by the Adviser
since 1988 and has been the Fund's portfolio manager since January 21,
1999.
Research Bond Fund Robert J. Manning, a Senior Vice President and member of the Fixed
Income Management Group of the Adviser, has been employed as a
portfolio manager by the Adviser since 1984. Mr. Manning oversees a
committee of various fixed income research analysts employed by the
Adviser. Mr. Manning has been the Fund's portfolio manager since
January 21, 1999.
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The date of this Supplement is January 21, 1999.
