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<PAGE> PAGE 2
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<PAGE> PAGE 6
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<PAGE> PAGE 11
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<PAGE> PAGE 13
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<PAGE> PAGE 15
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<PAGE> PAGE 19
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<PAGE> PAGE 21
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<PAGE> PAGE 22
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<PAGE> PAGE 23
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<PAGE> PAGE 24
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<PAGE> PAGE 25
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<PAGE> PAGE 26
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<PAGE> PAGE 27
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<PAGE> PAGE 28
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<PAGE> PAGE 29
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<PAGE> PAGE 30
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<PAGE> PAGE 31
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<PAGE> PAGE 32
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<PAGE> PAGE 33
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<PAGE> PAGE 34
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<PAGE> PAGE 35
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<PAGE> PAGE 36
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SIGNATURE JAMES O. YOST
TITLE TREASURER
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<CIK> 0000911637
<NAME> MFS SERIES TRUST XI
<SERIES>
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<NAME> VERTEX ALL CAP FUND
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<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000911637
<NAME> MFS SERIES TRUST XI
<SERIES>
<NUMBER> 051
<NAME> VERTEX GROWTH FUND
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<S> <C>
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<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000911637
<NAME> MFS SERIES TRUST XI
<SERIES>
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<NAME> MFS UNION STANDARD EQUITY FUND - CLASS A
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<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000911637
<NAME> MFS SERIES TRUST XI
<SERIES>
<NUMBER> 013
<NAME> MFS UNION STANDARD EQUITY FUND - CLASS B
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<CIK> 0000911637
<NAME> MFS SERIES TRUST XI
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<NAME> MFS UNION STANDARD EQUITY FUND - CLASS C
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<CIK> 0000911637
<NAME> MFS SERIES TRUST XI
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<NAME> MFS UNION STANDARD EQUITY FUND - CLASS I
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