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<PAGE> PAGE 2
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<PAGE> PAGE 3
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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 19
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<PAGE> PAGE 20
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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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<PAGE> PAGE 37
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<PAGE> PAGE 38
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<PAGE> PAGE 39
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<PAGE> PAGE 40
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<PAGE> PAGE 41
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<PAGE> PAGE 42
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<PAGE> PAGE 43
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<PAGE> PAGE 44
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<PAGE> PAGE 46
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<PAGE> PAGE 47
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SIGNATURE ELLEN MOYNIHAN
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<RECEIVABLES> 303005
<ASSETS-OTHER> 858
<OTHER-ITEMS-ASSETS> 3194550
<TOTAL-ASSETS> 71113421
<PAYABLE-FOR-SECURITIES> 294312
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 3303964
<TOTAL-LIABILITIES> 3598276
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 47169253
<SHARES-COMMON-STOCK> 4370866
<SHARES-COMMON-PRIOR> 3778401
<ACCUMULATED-NII-CURRENT> 72197
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 1509193
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 18764502
<NET-ASSETS> 67515145
<DIVIDEND-INCOME> 234128
<INTEREST-INCOME> 39760
<OTHER-INCOME> (2948)
<EXPENSES-NET> (198679)
<NET-INVESTMENT-INCOME> 72261
<REALIZED-GAINS-CURRENT> 1999975
<APPREC-INCREASE-CURRENT> 6085773
<NET-CHANGE-FROM-OPS> 8158009
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (299770)
<DISTRIBUTIONS-OF-GAINS> (10735727)
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 139161
<NUMBER-OF-SHARES-REDEEMED> (268441)
<SHARES-REINVESTED> 721745
<NET-CHANGE-IN-ASSETS> 6048642
<ACCUMULATED-NII-PRIOR> 299706
<ACCUMULATED-GAINS-PRIOR> 10244945
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 183395
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 229220
<AVERAGE-NET-ASSETS> 60800374
<PER-SHARE-NAV-BEGIN> 16.27
<PER-SHARE-NII> 0.02
<PER-SHARE-GAIN-APPREC> 2.18
<PER-SHARE-DIVIDEND> (0.08)
<PER-SHARE-DISTRIBUTIONS> (2.94)
<RETURNS-OF-CAPITAL> 0.00
<PER-SHARE-NAV-END> 15.45
<EXPENSE-RATIO> 0.66
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000867969
<NAME> MFS INSTITUTIONAL TRUST
<SERIES>
<NUMBER> 01
<NAME> MFS INSTITUTIONAL GLOBAL FIXED INCOME FUND
<MULTIPLIER> 1
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> JUN-30-2000
<PERIOD-START> JUL-01-1999
<PERIOD-END> DEC-31-1999
<INVESTMENTS-AT-COST> 23256616
<INVESTMENTS-AT-VALUE> 22564734
<RECEIVABLES> 427667
<ASSETS-OTHER> 1105798
<OTHER-ITEMS-ASSETS> 408
<TOTAL-ASSETS> 24098607
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 39744
<TOTAL-LIABILITIES> 39744
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 28679403
<SHARES-COMMON-STOCK> 2763045
<SHARES-COMMON-PRIOR> 1715045
<ACCUMULATED-NII-CURRENT> 478408
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 0
<OVERDISTRIBUTION-GAINS> (4490321)
<ACCUM-APPREC-OR-DEPREC> (608627)
<NET-ASSETS> 24058863
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 453403
<OTHER-INCOME> 0
<EXPENSES-NET> (52630)
<NET-INVESTMENT-INCOME> 400773
<REALIZED-GAINS-CURRENT> (335901)
<APPREC-INCREASE-CURRENT> 213749
<NET-CHANGE-FROM-OPS> 278621
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (545516)
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 1207504
<NUMBER-OF-SHARES-REDEEMED> (221976)
<SHARES-REINVESTED> 62472
<NET-CHANGE-IN-ASSETS> 9152235
<ACCUMULATED-NII-PRIOR> 623151
<ACCUMULATED-GAINS-PRIOR> 0
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> (4154420)
<GROSS-ADVISORY-FEES> (52630)
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> (92747)
<AVERAGE-NET-ASSETS> 16099018
<PER-SHARE-NAV-BEGIN> 8.69
<PER-SHARE-NII> .21
<PER-SHARE-GAIN-APPREC> .01
<PER-SHARE-DIVIDEND> (.20)
<PER-SHARE-DISTRIBUTIONS> 0
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 8.71
<EXPENSE-RATIO> 0.65
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000867969
<NAME> MFS INSTITUTIONAL TRUST
<SERIES>
<NUMBER> 02
<NAME> MFS INSTITUTIONAL EMERGING EQUITIES
<MULTIPLIER> 1
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> JUN-30-2000
<PERIOD-START> JUL-01-1999
<PERIOD-END> DEC-31-1999
<INVESTMENTS-AT-COST> 442336022
<INVESTMENTS-AT-VALUE> 640629792
<RECEIVABLES> 3264983
<ASSETS-OTHER> 5786
<OTHER-ITEMS-ASSETS> 55832
<TOTAL-ASSETS> 643956393
<PAYABLE-FOR-SECURITIES> 2077477
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 5902920
<TOTAL-LIABILITIES> 7980397
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 405899138
<SHARES-COMMON-STOCK> 22641150
<SHARES-COMMON-PRIOR> 20035884
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> (958407)
<ACCUMULATED-NET-GAINS> 32741495
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 198293770
<NET-ASSETS> 635975996
<DIVIDEND-INCOME> 385932
<INTEREST-INCOME> 530313
<OTHER-INCOME> (220)
<EXPENSES-NET> (1874432)
<NET-INVESTMENT-INCOME> (958407)
<REALIZED-GAINS-CURRENT> 67969699
<APPREC-INCREASE-CURRENT> 108102606
<NET-CHANGE-FROM-OPS> 175113898
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 0
<DISTRIBUTIONS-OF-GAINS> (51221170)
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 4684059
<NUMBER-OF-SHARES-REDEEMED> (3839491)
<SHARES-REINVESTED> 1760698
<NET-CHANGE-IN-ASSETS> 191153875
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 15992966
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 1744689
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 1896398
<AVERAGE-NET-ASSETS> 462595650
<PER-SHARE-NAV-BEGIN> 22.20
<PER-SHARE-NII> (0.05)
<PER-SHARE-GAIN-APPREC> 8.39
<PER-SHARE-DIVIDEND> 0
<PER-SHARE-DISTRIBUTIONS> (2.45)
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 28.09
<EXPENSE-RATIO> 0.81
</TABLE>
37311
SUB-ITEM 77H
As of December 31, 1999, the following person or entity owns more than 25% of a
fund's voting security:
<TABLE>
<CAPTION>
PERSON/ENTITY FUND PERCENTAGE
<S> <C> <C>
Foster Wheeler Corporation IIE 62.47%
</TABLE>
As of December 31, 1999, the following persons or entity that no longer owns 25%
of a fund's voting security:
<TABLE>
<CAPTION>
PERSON/ENTITY FUND
<S> <C>
The Carnegie Foundation for the Advancement of Teaching IMC
Trustees of the MFS Pension Plan IIE
</TABLE>
35757
ITEM 77Q1
MFS INSTITUTIONAL TRUST
MFS INSTITUTIONAL CORE FIXED INCOME FUND
Pursuant to Section 6.9 of the Amended and Restated Declaration of
Trust dated January 24, 1996, as amended, (the "Declaration"), of MFS
Institutional Trust (the "Trust"), the undersigned, constituting a majority of
the Trustees of the Trust, do hereby certify that MFS Institutional Core Fixed
Income Fund, a series of the Trust, has been terminated.
<PAGE>
IN WITNESS WHEREOF, a majority of the Trustees of the Trust have
executed this redesignation of series this 23rd day of December,1999.
JEFFREY L. SHAMES
Jeffrey L. Shames
38 Lake Avenue
Newton, MA 02159
NELSON J. DARLING, JR.
Nelson J. Darling, Jr.
74 Beach Bluff Avenue
Swampscott, MA 01907
WILLIAM R. GUTOW
William R. Gutow
3 Rue Dulac
Dallas, TX 75230
