MFS SERIES TRUST VI
NSAR-B, 1998-12-28
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<PAGE>      PAGE  1
000 B000000 10/31/98
000 C000000 0000863032
000 D000000 N
000 E000000 NF
000 F000000 Y
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000 I000000 3.0.a
000 J000000 A
001 A000000 MFS SERIES TRUST VI
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001 C000000 6179545000
002 A000000 500 BOYLSTON STREET
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002 C000000 MA
002 D010000 02116
003  000000 N
004  000000 N
005  000000 N
006  000000 N
007 A000000 Y
007 B000000  3
007 C010100  1
007 C020100 MFS GLOBAL TOTAL RETURN FUND
007 C030100 N
007 C010200  2
007 C020200 MFS UTILITIES FUND
007 C030200 N
007 C010300  3
007 C020300 MFS GLOBAL EQUITY FUND
007 C030300 N
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007 C010500  5
007 C010600  6
007 C010700  7
007 C010800  8
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007 C011000 10
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008 D03AA01 02116
010 A00AA01 MASSACHUSETTS FINANCIAL SERVICES COMPANY
010 B00AA01 801-17352
010 C01AA01 BOSTON
010 C02AA01 MA
010 C03AA01 02116
011 A00AA01 MFS FUND DISTRIBUTORS, INC.
011 B00AA01 8-27864
<PAGE>      PAGE  2
011 C01AA01 BOSTON
011 C02AA01 MA
011 C03AA01 02116
012 A00AA01 MFS SERVICE CENTER, INC.
012 B00AA01 84-1316
012 C01AA01 BOSTON
012 C02AA01 MA
012 C03AA01 02116
015 A00AA01 STATE STREET BANK AND TRUST COMPANY
015 B00AA01 C
015 C01AA01 BOSTON
015 C02AA01 MA
015 C03AA01 02110
015 E01AA01 X
015 A00AA02 CHASE MANHATTAN BANK, N.A.
015 B00AA02 S
015 C01AA02 NEW YORK
015 C02AA02 NY
015 C03AA02 10081
015 E04AA02 X
015 A00AA03 THE BANK OF NEW YORK
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020 A000002 MERRILL LYNCH PIERCE FENNER
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020 A000004 DONALDSON, LUFKIN AND JENRETTE
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020 A000005 GOLDMAN SACHS & CO.
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<PAGE>      PAGE  3
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022 B000007 75-0520130
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022 B000008 13-5408880
022 C000008    209891
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022 C000009    150277
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<PAGE>      PAGE  4
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<PAGE>      PAGE  5
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<PAGE>      PAGE  6
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<PAGE>      PAGE  7
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<PAGE>      PAGE  8
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<PAGE>      PAGE  9
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<PAGE>      PAGE  10
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<PAGE>      PAGE  11
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<PAGE>      PAGE  12
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<PAGE>      PAGE  13
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<PAGE>      PAGE  14
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<PAGE>      PAGE  15
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<PAGE>      PAGE  16
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<PAGE>      PAGE  17
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<PAGE>      PAGE  18
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<PAGE>      PAGE  20
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SIGNATURE   JAMES O. YOST                                
TITLE       ASSISTANT TREASURER 
 


<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000863032
<NAME> MFS SERIES TRUST  VI
<SERIES>
   <NUMBER> 011
   <NAME> MFS WORLD TOTAL RETURN FUND CLASS A
<MULTIPLIER> 1
       
<S>                             <C>
<PERIOD-TYPE>                   YEAR
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</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000863032
<NAME> MFS SERIES TRUST  VI
<SERIES>
   <NUMBER> 012
   <NAME> MFS WORLD TOTAL RETURN FUND CLASS B
<MULTIPLIER> 1
       
<S>                             <C>
<PERIOD-TYPE>                   YEAR
<FISCAL-YEAR-END>                          OCT-31-1998
<PERIOD-START>                             NOV-01-1997
<PERIOD-END>                               OCT-31-1998
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</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000863032
<NAME> MFS SERIES TRUST  VI
<SERIES>
   <NUMBER> 013
   <NAME> MFS WORLD TOTAL RETURN FUND CLASS C
<MULTIPLIER> 1
       
<S>                             <C>
<PERIOD-TYPE>                   YEAR
<FISCAL-YEAR-END>                          OCT-31-1998
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<NET-INVESTMENT-INCOME>                        5060276
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</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000863032
<NAME> MFS SERIES TRUST  VI
<SERIES>
   <NUMBER> 014
   <NAME> MFS WORLD TOTAL RETURN FUND CLASS I
<MULTIPLIER> 1
       
<S>                             <C>
<PERIOD-TYPE>                   YEAR
<FISCAL-YEAR-END>                          OCT-31-1998
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<REALIZED-GAINS-CURRENT>                      23364047
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<NUMBER-OF-SHARES-REDEEMED>                    (25193)
<SHARES-REINVESTED>                              10688 
<NET-CHANGE-IN-ASSETS>                        30717782
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<ACCUMULATED-GAINS-PRIOR>                     17450329
<OVERDISTRIB-NII-PRIOR>                      (1310949)
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<PER-SHARE-NAV-BEGIN>                            13.86
<PER-SHARE-NII>                                   0.33
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<AVG-DEBT-PER-SHARE>                                 0
        


</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000863032
<NAME> MFS SERIES TRUST VI
<SERIES>
   <NUMBER> 021
   <NAME> MFS UTILITIES FUND CLASS A
<MULTIPLIER> 1
       
<S>                             <C>
<PERIOD-TYPE>                   YEAR
<FISCAL-YEAR-END>                          OCT-31-1998
<PERIOD-START>                             NOV-01-1997
<PERIOD-END>                               OCT-31-1998
<INVESTMENTS-AT-COST>                        754324897
<INVESTMENTS-AT-VALUE>                       780417498
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<PAYABLE-FOR-SECURITIES>                      34313100
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                      1990924
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<PAID-IN-CAPITAL-COMMON>                     713563527
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<ACCUMULATED-GAINS-PRIOR>                     28894870
<OVERDISTRIB-NII-PRIOR>                              0
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<PER-SHARE-NII>                                   0.27
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</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000863032
<NAME> MFS SERIES TRUST VI
<SERIES>
   <NUMBER> 022
   <NAME> MFS UTILITIES FUND CLASS B
<MULTIPLIER> 1
       
<S>                             <C>
<PERIOD-TYPE>                   YEAR
<FISCAL-YEAR-END>                          OCT-31-1998
<PERIOD-START>                             NOV-01-1997
<PERIOD-END>                               OCT-31-1998
<INVESTMENTS-AT-COST>                        754324897
<INVESTMENTS-AT-VALUE>                       780417498
<RECEIVABLES>                                 37592264
<ASSETS-OTHER>                                    1711
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<PAYABLE-FOR-SECURITIES>                      34313100
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</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000863032
<NAME> MFS SERIES TRUST VI
<SERIES>
   <NUMBER> 023
   <NAME> MFS UTILITIES FUND CLASS C
<MULTIPLIER> 1
       
<S>                             <C>
<PERIOD-TYPE>                   YEAR
<FISCAL-YEAR-END>                          OCT-31-1998
<PERIOD-START>                             NOV-01-1997
<PERIOD-END>                               OCT-31-1998
<INVESTMENTS-AT-COST>                        754324897
<INVESTMENTS-AT-VALUE>                       780417498
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<NET-INVESTMENT-INCOME>                        9071521
<REALIZED-GAINS-CURRENT>                      43877107
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<NET-CHANGE-FROM-OPS>                         65631307
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<DISTRIBUTIONS-OF-INCOME>                    (1113111)
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<PER-SHARE-NAV-BEGIN>                            10.37
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<EXPENSE-RATIO>                                   1.80
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</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000863032
<NAME> MFS SERIES TRUST VI
<SERIES>
   <NUMBER> 024
   <NAME> MFS UTILITIES FUND CLASS I
<MULTIPLIER> 1
       
<S>                             <C>
<PERIOD-TYPE>                   YEAR
<FISCAL-YEAR-END>                          OCT-31-1998
<PERIOD-START>                             NOV-01-1997
<PERIOD-END>                               OCT-31-1998
<INVESTMENTS-AT-COST>                        754324897
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</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000863032
<NAME> MFS SERIES TRUST VI
<SERIES>
   <NUMBER> 031
   <NAME> MFS GLOBAL EQUITY FUND - CLASS A
<MULTIPLIER> 1
       
<S>                             <C>
<PERIOD-TYPE>                   YEAR
<FISCAL-YEAR-END>                          OCT-31-1998
<PERIOD-START>                             NOV-01-1997
<PERIOD-END>                               OCT-31-1998
<INVESTMENTS-AT-COST>                        497175694
<INVESTMENTS-AT-VALUE>                       579407419
<RECEIVABLES>                                  8638445
<ASSETS-OTHER>                                   34769
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<PAYABLE-FOR-SECURITIES>                       2573262
<SENIOR-LONG-TERM-DEBT>                              0
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<SHARES-COMMON-STOCK>                         13781263
<SHARES-COMMON-PRIOR>                          8332541
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<APPREC-INCREASE-CURRENT>                      9488026
<NET-CHANGE-FROM-OPS>                         35917710
<EQUALIZATION>                                       0
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<NUMBER-OF-SHARES-REDEEMED>                 (58297803)
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</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000863032
<NAME> MFS SERIES TRUST VI
<SERIES>
   <NUMBER> 032
   <NAME> MFS GLOBAL EQUITY FUND - CLASS B
<MULTIPLIER> 1
       
<S>                             <C>
<PERIOD-TYPE>                   YEAR
<FISCAL-YEAR-END>                          OCT-31-1998
<PERIOD-START>                             NOV-01-1997
<PERIOD-END>                               OCT-31-1998
<INVESTMENTS-AT-COST>                        497175694
<INVESTMENTS-AT-VALUE>                       579407419
<RECEIVABLES>                                  8638445
<ASSETS-OTHER>                                   34769
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<TOTAL-ASSETS>                               589326226
<PAYABLE-FOR-SECURITIES>                       2573262
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                      8690990
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<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                     468489970
<SHARES-COMMON-STOCK>                         13256897
<SHARES-COMMON-PRIOR>                         12686105
<ACCUMULATED-NII-CURRENT>                            0 
<OVERDISTRIBUTION-NII>                         (63033)
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</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000863032
<NAME> MFS SERIES TRUST VI
<SERIES>
   <NUMBER> 033
   <NAME> MFS GLOBAL EQUITY FUND - CLASS C
<MULTIPLIER> 1
       
<S>                             <C>
<PERIOD-TYPE>                   YEAR
<FISCAL-YEAR-END>                          OCT-31-1998
<PERIOD-START>                             NOV-01-1997
<PERIOD-END>                               OCT-31-1998
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<SHARES-COMMON-STOCK>                          1458452
<SHARES-COMMON-PRIOR>                           842074
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<OTHER-INCOME>                                (824904)
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<NET-INVESTMENT-INCOME>                       (855865)
<REALIZED-GAINS-CURRENT>                      27285549
<APPREC-INCREASE-CURRENT>                      9488026
<NET-CHANGE-FROM-OPS>                         35917710
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<DISTRIBUTIONS-OF-INCOME>                      (12160)
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<NUMBER-OF-SHARES-REDEEMED>                  (1391012)
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<ACCUMULATED-NII-PRIOR>                        1034753
<ACCUMULATED-GAINS-PRIOR>                     22742491
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<INTEREST-EXPENSE>                                2333
<GROSS-EXPENSE>                               10521220
<AVERAGE-NET-ASSETS>                         521162996
<PER-SHARE-NAV-BEGIN>                            19.78
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</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000863032
<NAME> MFS SERIES TRUST VI
<SERIES>
   <NUMBER> 034
   <NAME> MFS GLOBAL EQUITY FUND - CLASS I
<MULTIPLIER> 1
       
<S>                             <C>
<PERIOD-TYPE>                   YEAR
<FISCAL-YEAR-END>                          OCT-31-1998
<PERIOD-START>                             NOV-01-1997
<PERIOD-END>                               OCT-31-1998
<INVESTMENTS-AT-COST>                        497175694
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<EXPENSES-NET>                              (10463731)
<NET-INVESTMENT-INCOME>                       (855865)
<REALIZED-GAINS-CURRENT>                      27285549
<APPREC-INCREASE-CURRENT>                      9488026
<NET-CHANGE-FROM-OPS>                         35917710
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                       (3499)
<DISTRIBUTIONS-OF-GAINS>                       (23223)
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<NUMBER-OF-SHARES-SOLD>                           6519
<NUMBER-OF-SHARES-REDEEMED>                     (1996)
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<ACCUMULATED-NII-PRIOR>                        1034753
<ACCUMULATED-GAINS-PRIOR>                     22742491
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<INTEREST-EXPENSE>                                2333
<GROSS-EXPENSE>                               10521220
<AVERAGE-NET-ASSETS>                         521162996
<PER-SHARE-NAV-BEGIN>                            20.14
<PER-SHARE-NII>                                   0.11
<PER-SHARE-GAIN-APPREC>                           1.37
<PER-SHARE-DIVIDEND>                            (0.16)
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<EXPENSE-RATIO>                                   1.35
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<AVG-DEBT-PER-SHARE>                                 0
        


</TABLE>


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