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011 B000001 8-27864
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<PAGE> PAGE 2
013 B030001 02110
013 B040001 1617
015 A000001 STATE STREET BANK AND TRUST COMPANY
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015 B000002 S
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<PAGE> PAGE 3
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<PAGE> PAGE 9
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SIGNATURE JAMES O. YOST
TITLE ASSISTANT TREASURER
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM
THE FINANCIAL STATEMENTS OF MASSACHUSETTS INVESTORS GROWTH STOCK FUND
CLASS A AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FIANCIAL
STATEMENTS.
</LEGEND>
<NAME> MASSACHUSETTS INVESTORS GROWTH STOCK FUND CLASS A
<S> <C>
<PERIOD-TYPE> YEAR
<FISCAL-YEAR-END> NOV-30-1995
<PERIOD-END> NOV-30-1995
<INVESTMENTS-AT-COST> 821,939,132
<INVESTMENTS-AT-VALUE> 1,187,377,965
<RECEIVABLES> 19,239,766
<ASSETS-OTHER> 13,503
<OTHER-ITEMS-ASSETS> 242
<TOTAL-ASSETS> 1,206,631,476
<PAYABLE-FOR-SECURITIES> 10,513,372
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 1,297,942
<TOTAL-LIABILITIES> 11,811,314
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 676,454,387
<SHARES-COMMON-STOCK> 94,350,267
<SHARES-COMMON-PRIOR> 93,272,283
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 61,855
<ACCUMULATED-NET-GAINS> 152,988,797
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 365,438,833
<NET-ASSETS> 1,194,820,162
<DIVIDEND-INCOME> 3,404,333
<INTEREST-INCOME> 3,199,285
<OTHER-INCOME> 0
<EXPENSES-NET> 7,589,772
<NET-INVESTMENT-INCOME> (986,154)
<REALIZED-GAINS-CURRENT> 155,044,848
<APPREC-INCREASE-CURRENT> 150,833,517
<NET-CHANGE-FROM-OPS> 304,892,211
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 0
<DISTRIBUTIONS-OF-GAINS> 100,591,643
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 12,002,572
<NUMBER-OF-SHARES-REDEEMED> 19,312,028
<SHARES-REINVESTED> 8,387,440
<NET-CHANGE-IN-ASSETS> 208,104,149
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 100,892,641
<OVERDISTRIB-NII-PRIOR> 50,843
<OVERDIST-NET-GAINS-PRIOR> 0
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</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM
THE FINANCIAL STATEMENTS OF MASSACHUSETTS INVESTORS GROWTH STOCK FUND
CLASS B AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FIANCIAL
STATEMENTS.
</LEGEND>
<NAME> MASSACHUSETTS INVESTORS GROWTH STOCK FUND CLASS B
<S> <C>
<PERIOD-TYPE> YEAR
<FISCAL-YEAR-END> NOV-30-1995
<PERIOD-END> NOV-30-1995
<INVESTMENTS-AT-COST> 821,939,132
<INVESTMENTS-AT-VALUE> 1,187,377,965
<RECEIVABLES> 19,239,766
<ASSETS-OTHER> 13,503
<OTHER-ITEMS-ASSETS> 242
<TOTAL-ASSETS> 1,206,631,476
<PAYABLE-FOR-SECURITIES> 10,513,372
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 1,297,942
<TOTAL-LIABILITIES> 11,811,314
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 676,454,387
<SHARES-COMMON-STOCK> 1,180,611
<SHARES-COMMON-PRIOR> 899,356
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 61,855
<ACCUMULATED-NET-GAINS> 152,988,797
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 365,438,833
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<DIVIDEND-INCOME> 3,404,333
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<NET-INVESTMENT-INCOME> (986,154)
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<NET-CHANGE-FROM-OPS> 304,892,211
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 0
<DISTRIBUTIONS-OF-GAINS> 1,381,907
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 1,196,877
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<SHARES-REINVESTED> 139,032
<NET-CHANGE-IN-ASSETS> 208,104,149
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 100,892,641
<OVERDISTRIB-NII-PRIOR> 50,843
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 3,339,532
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 8,949,915
<AVERAGE-NET-ASSETS> 1,069,765,873
<PER-SHARE-NAV-BEGIN> 10.35
<PER-SHARE-NII> (0.11)
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<PER-SHARE-NAV-END> 12.26
<EXPENSE-RATIO> 1.63
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
