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MFS(R) RESEARCH BOND FUND
Supplement to the Current Prospectus
The description of portfolio managers under the "Management of the Funds"
section is hereby restated as follows:
Effective July 1, 2000, the fund is managed by a committee comprised of research
analysts under the general supervision of Michael W. Roberge, the Associate
Director of Fixed Income Research and a Senior Vice President of MFS. Mr.
Roberge has been employed by MFS in the investment management area since 1996.
The date of this Supplement is July 3, 2000.
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MFS(R) BOND FUND
Supplement to the Current Prospectus
The description of portfolio managers under the "Management of the Fund" section
is hereby restated as follows:
Geoffrey L. Kurinsky, a Senior Vice President of MFS, has been employed in the
investment management area of MFS since 1987. Mr. Kurinsky has been the fund's
portfolio manager since 1989. William Adams, a Vice President of MFS, has been
employed by MFS in the investment management area since 1997. Mr. Adams became a
portfolio manager of the fund effective July 1, 2000.
The date of this Supplement is July 3, 2000.
