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<PAGE> PAGE 16
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<PAGE> PAGE 21
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012 A000601 FIDELITY INVESTMENTS INST'L OPERATIONS CO.
012 B000601 84-00216
012 C010601 BOSTON
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012 C030601 02109
015 A000601 BANK OF NEW YORK
015 B000601 C
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<PAGE> PAGE 22
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<PAGE> PAGE 23
070 M010600 N
070 M020600 N
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<PAGE> PAGE 24
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012 A000701 CITIBANK, NA
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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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SIGNATURE JOHN H. COSTELLO
TITLE ASSISTANT TREASURER
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0
<GROSS-ADVISORY-FEES>
6,023
<INTEREST-EXPENSE>
0
<GROSS-EXPENSE>
8,814
<AVERAGE-NET-ASSETS>
382,796
<PER-SHARE-NAV-BEGIN>
1.000
<PER-SHARE-NII>
.024
<PER-SHARE-GAIN-APPREC>
0
<PER-SHARE-DIVIDEND>
0
<PER-SHARE-DISTRIBUTIONS>
.024
<RETURNS-OF-CAPITAL>
0
<PER-SHARE-NAV-END>
1.000
<EXPENSE-RATIO>
35
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000356173
<NAME> Colchester Street Trust
<SERIES>
<NUMBER> 23
<NAME> Government Portfolio - Class III
<MULTIPLIER> 1,000
<S>
<C>
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6-mos
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mar-31-2000
<PERIOD-END>
sep-30-1999
<INVESTMENTS-AT-COST>
7,199,510
<INVESTMENTS-AT-VALUE>
7,199,510
<RECEIVABLES>
15,479
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1
<OTHER-ITEMS-ASSETS>
0
<TOTAL-ASSETS>
7,214,990
<PAYABLE-FOR-SECURITIES>
599,562
<SENIOR-LONG-TERM-DEBT>
0
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15,178
<TOTAL-LIABILITIES>
614,740
<SENIOR-EQUITY>
0
<PAID-IN-CAPITAL-COMMON>
6,601,188
<SHARES-COMMON-STOCK>
879,728
<SHARES-COMMON-PRIOR>
829,136
<ACCUMULATED-NII-CURRENT>
0
<OVERDISTRIBUTION-NII>
0
<ACCUMULATED-NET-GAINS>
(938)
<OVERDISTRIBUTION-GAINS>
0
<ACCUM-APPREC-OR-DEPREC>
0
<NET-ASSETS>
6,600,250
<DIVIDEND-INCOME>
0
<INTEREST-INCOME>
152,954
<OTHER-INCOME>
0
<EXPENSES-NET>
7,393
<NET-INVESTMENT-INCOME>
145,561
<REALIZED-GAINS-CURRENT>
32
<APPREC-INCREASE-CURRENT>
0
<NET-CHANGE-FROM-OPS>
145,593
<EQUALIZATION>
0
<DISTRIBUTIONS-OF-INCOME>
20,073
<DISTRIBUTIONS-OF-GAINS>
0
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0
<NUMBER-OF-SHARES-SOLD>
5,995,124
<NUMBER-OF-SHARES-REDEEMED>
5,959,510
<SHARES-REINVESTED>
14,978
<NET-CHANGE-IN-ASSETS>
454,684
<ACCUMULATED-NII-PRIOR>
0
<ACCUMULATED-GAINS-PRIOR>
(970)
<OVERDISTRIB-NII-PRIOR>
0
<OVERDIST-NET-GAINS-PRIOR>
0
<GROSS-ADVISORY-FEES>
6,023
<INTEREST-EXPENSE>
0
<GROSS-EXPENSE>
8,814
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866,769
<PER-SHARE-NAV-BEGIN>
1.000
<PER-SHARE-NII>
.023
<PER-SHARE-GAIN-APPREC>
0
<PER-SHARE-DIVIDEND>
0
<PER-SHARE-DISTRIBUTIONS>
.023
<RETURNS-OF-CAPITAL>
0
<PER-SHARE-NAV-END>
1.000
<EXPENSE-RATIO>
45
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000356173
<NAME> Colchester Street Trust
<SERIES>
<NUMBER> 11
<NAME> Money Market Portfolio - Class I
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<S>
<C>
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6-mos
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mar-31-2000
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sep-30-1999
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12,073,997
<INVESTMENTS-AT-VALUE>
12,073,997
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51,466
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0
<OTHER-ITEMS-ASSETS>
0
<TOTAL-ASSETS>
12,125,463
<PAYABLE-FOR-SECURITIES>
75,000
<SENIOR-LONG-TERM-DEBT>
0
<OTHER-ITEMS-LIABILITIES>
20,965
<TOTAL-LIABILITIES>
95,965
<SENIOR-EQUITY>
0
<PAID-IN-CAPITAL-COMMON>
12,031,709
<SHARES-COMMON-STOCK>
11,322,730
<SHARES-COMMON-PRIOR>
12,770,167
<ACCUMULATED-NII-CURRENT>
0
<OVERDISTRIBUTION-NII>
0
<ACCUMULATED-NET-GAINS>
(2,211)
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0
<ACCUM-APPREC-OR-DEPREC>
0
<NET-ASSETS>
12,029,498
<DIVIDEND-INCOME>
0
<INTEREST-INCOME>
354,733
<OTHER-INCOME>
0
<EXPENSES-NET>
13,347
<NET-INVESTMENT-INCOME>
341,386
<REALIZED-GAINS-CURRENT>
17
<APPREC-INCREASE-CURRENT>
0
<NET-CHANGE-FROM-OPS>
341,403
<EQUALIZATION>
0
<DISTRIBUTIONS-OF-INCOME>
323,184
<DISTRIBUTIONS-OF-GAINS>
0
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0
<NUMBER-OF-SHARES-SOLD>
57,161,863
<NUMBER-OF-SHARES-REDEEMED>
58,811,687
<SHARES-REINVESTED>
202,387
<NET-CHANGE-IN-ASSETS>
(1,480,838)
<ACCUMULATED-NII-PRIOR>
0
<ACCUMULATED-GAINS-PRIOR>
(2,227)
<OVERDISTRIB-NII-PRIOR>
0
<OVERDIST-NET-GAINS-PRIOR>
0
<GROSS-ADVISORY-FEES>
13,834
<INTEREST-EXPENSE>
0
<GROSS-EXPENSE>
17,419
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13,062,955
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1.000
<PER-SHARE-NII>
.025
<PER-SHARE-GAIN-APPREC>
0
<PER-SHARE-DIVIDEND>
.025
<PER-SHARE-DISTRIBUTIONS>
0
<RETURNS-OF-CAPITAL>
0
<PER-SHARE-NAV-END>
1.000
<EXPENSE-RATIO>
18
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000356173
<NAME> Colchester Street Trust
<SERIES>
<NUMBER> 13
<NAME> Money Market Portfolio - Class III
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<S>
<C>
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12,073,997
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12,073,997
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51,466
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0
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0
<TOTAL-ASSETS>
12,125,463
<PAYABLE-FOR-SECURITIES>
75,000
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0
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20,965
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95,965
<SENIOR-EQUITY>
0
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12,031,709
<SHARES-COMMON-STOCK>
588,335
<SHARES-COMMON-PRIOR>
652,618
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0
<OVERDISTRIBUTION-NII>
0
<ACCUMULATED-NET-GAINS>
(2,211)
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0
<ACCUM-APPREC-OR-DEPREC>
0
<NET-ASSETS>
12,029,498
<DIVIDEND-INCOME>
0
<INTEREST-INCOME>
354,733
<OTHER-INCOME>
0
<EXPENSES-NET>
13,347
<NET-INVESTMENT-INCOME>
341,386
<REALIZED-GAINS-CURRENT>
17
<APPREC-INCREASE-CURRENT>
0
<NET-CHANGE-FROM-OPS>
341,403
<EQUALIZATION>
0
<DISTRIBUTIONS-OF-INCOME>
15,039
<DISTRIBUTIONS-OF-GAINS>
0
<DISTRIBUTIONS-OTHER>
0
<NUMBER-OF-SHARES-SOLD>
3,294,008
<NUMBER-OF-SHARES-REDEEMED>
3,370,921
<SHARES-REINVESTED>
12,630
<NET-CHANGE-IN-ASSETS>
(1,480,838)
<ACCUMULATED-NII-PRIOR>
0
<ACCUMULATED-GAINS-PRIOR>
(2,227)
<OVERDISTRIB-NII-PRIOR>
0
<OVERDIST-NET-GAINS-PRIOR>
0
<GROSS-ADVISORY-FEES>
13,834
<INTEREST-EXPENSE>
0
<GROSS-EXPENSE>
17,419
<AVERAGE-NET-ASSETS>
636,655
<PER-SHARE-NAV-BEGIN>
1.000
<PER-SHARE-NII>
.024
<PER-SHARE-GAIN-APPREC>
0
<PER-SHARE-DIVIDEND>
.024
<PER-SHARE-DISTRIBUTIONS>
0
<RETURNS-OF-CAPITAL>
0
<PER-SHARE-NAV-END>
1.000
<EXPENSE-RATIO>
43
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000356173
<NAME> Colchester Street Trust
<SERIES>
<NUMBER> 12
<NAME> Money Market Portfolio - Class II
<MULTIPLIER> 1,000
<S>
<C>
<PERIOD-TYPE>
6-mos
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mar-31-2000
<PERIOD-END>
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12,073,997
<INVESTMENTS-AT-VALUE>
12,073,997
<RECEIVABLES>
51,466
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0
<OTHER-ITEMS-ASSETS>
0
<TOTAL-ASSETS>
12,125,463
<PAYABLE-FOR-SECURITIES>
75,000
<SENIOR-LONG-TERM-DEBT>
0
<OTHER-ITEMS-LIABILITIES>
20,965
<TOTAL-LIABILITIES>
95,965
<SENIOR-EQUITY>
0
<PAID-IN-CAPITAL-COMMON>
12,031,709
<SHARES-COMMON-STOCK>
120,620
<SHARES-COMMON-PRIOR>
89,755
<ACCUMULATED-NII-CURRENT>
0
<OVERDISTRIBUTION-NII>
0
<ACCUMULATED-NET-GAINS>
(2,211)
<OVERDISTRIBUTION-GAINS>
0
<ACCUM-APPREC-OR-DEPREC>
0
<NET-ASSETS>
12,029,498
<DIVIDEND-INCOME>
0
<INTEREST-INCOME>
354,733
<OTHER-INCOME>
0
<EXPENSES-NET>
13,347
<NET-INVESTMENT-INCOME>
341,386
<REALIZED-GAINS-CURRENT>
17
<APPREC-INCREASE-CURRENT>
0
<NET-CHANGE-FROM-OPS>
341,403
<EQUALIZATION>
0
<DISTRIBUTIONS-OF-INCOME>
3,163
<DISTRIBUTIONS-OF-GAINS>
0
<DISTRIBUTIONS-OTHER>
0
<NUMBER-OF-SHARES-SOLD>
960,629
<NUMBER-OF-SHARES-REDEEMED>
932,534
<SHARES-REINVESTED>
2,770
<NET-CHANGE-IN-ASSETS>
(1,480,838)
<ACCUMULATED-NII-PRIOR>
0
<ACCUMULATED-GAINS-PRIOR>
(2,227)
<OVERDISTRIB-NII-PRIOR>
0
<OVERDIST-NET-GAINS-PRIOR>
0
<GROSS-ADVISORY-FEES>
13,834
<INTEREST-EXPENSE>
0
<GROSS-EXPENSE>
17,419
<AVERAGE-NET-ASSETS>
134,358
<PER-SHARE-NAV-BEGIN>
1.000
<PER-SHARE-NII>
.024
<PER-SHARE-GAIN-APPREC>
0
<PER-SHARE-DIVIDEND>
.024
<PER-SHARE-DISTRIBUTIONS>
0
<RETURNS-OF-CAPITAL>
0
<PER-SHARE-NAV-END>
1.000
<EXPENSE-RATIO>
33
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000356173
<NAME> Colchester Street Trust
<SERIES>
<NUMBER> 61
<NAME> Treasury Only Portfolio - Class I
<MULTIPLIER> 1,000
<S>
<C>
<PERIOD-TYPE>
6-mos
<FISCAL-YEAR-END>
mar-31-2000
<PERIOD-END>
sep-30-1999
<INVESTMENTS-AT-COST>
1,184,066
<INVESTMENTS-AT-VALUE>
1,184,066
<RECEIVABLES>
21,556
<ASSETS-OTHER>
0
<OTHER-ITEMS-ASSETS>
0
<TOTAL-ASSETS>
1,205,622
<PAYABLE-FOR-SECURITIES>
0
<SENIOR-LONG-TERM-DEBT>
0
<OTHER-ITEMS-LIABILITIES>
3,364
<TOTAL-LIABILITIES>
3,364
<SENIOR-EQUITY>
0
<PAID-IN-CAPITAL-COMMON>
1,202,345
<SHARES-COMMON-STOCK>
1,082,853
<SHARES-COMMON-PRIOR>
949,871
<ACCUMULATED-NII-CURRENT>
0
<OVERDISTRIBUTION-NII>
0
<ACCUMULATED-NET-GAINS>
(87)
<OVERDISTRIBUTION-GAINS>
0
<ACCUM-APPREC-OR-DEPREC>
0
<NET-ASSETS>
1,202,258
<DIVIDEND-INCOME>
0
<INTEREST-INCOME>
27,690
<OTHER-INCOME>
0
<EXPENSES-NET>
1,296
<NET-INVESTMENT-INCOME>
26,394
<REALIZED-GAINS-CURRENT>
90
<APPREC-INCREASE-CURRENT>
0
<NET-CHANGE-FROM-OPS>
26,484
<EQUALIZATION>
0
<DISTRIBUTIONS-OF-INCOME>
23,451
<DISTRIBUTIONS-OF-GAINS>
0
<DISTRIBUTIONS-OTHER>
0
<NUMBER-OF-SHARES-SOLD>
1,653,192
<NUMBER-OF-SHARES-REDEEMED>
1,526,887
<SHARES-REINVESTED>
6,677
<NET-CHANGE-IN-ASSETS>
93,758
<ACCUMULATED-NII-PRIOR>
0
<ACCUMULATED-GAINS-PRIOR>
(176)
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0
<OVERDIST-NET-GAINS-PRIOR>
0
<GROSS-ADVISORY-FEES>
1,159
<INTEREST-EXPENSE>
0
<GROSS-EXPENSE>
1,579
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1,023,452
<PER-SHARE-NAV-BEGIN>
1.000
<PER-SHARE-NII>
.023
<PER-SHARE-GAIN-APPREC>
0
<PER-SHARE-DIVIDEND>
.023
<PER-SHARE-DISTRIBUTIONS>
0
<RETURNS-OF-CAPITAL>
0
<PER-SHARE-NAV-END>
1.000
<EXPENSE-RATIO>
20
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000356173
<NAME> Colchester Street Trust
<SERIES>
<NUMBER> 62
<NAME> Treasury Only Portfolio - Class II
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<S>
<C>
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6-mos
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mar-31-2000
<PERIOD-END>
sep-30-1999
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1,184,066
<INVESTMENTS-AT-VALUE>
1,184,066
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21,556
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0
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0
<TOTAL-ASSETS>
1,205,622
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0
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0
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3,364
<TOTAL-LIABILITIES>
3,364
<SENIOR-EQUITY>
0
<PAID-IN-CAPITAL-COMMON>
1,202,345
<SHARES-COMMON-STOCK>
40,478
<SHARES-COMMON-PRIOR>
57,774
<ACCUMULATED-NII-CURRENT>
0
<OVERDISTRIBUTION-NII>
0
<ACCUMULATED-NET-GAINS>
(87)
<OVERDISTRIBUTION-GAINS>
0
<ACCUM-APPREC-OR-DEPREC>
0
<NET-ASSETS>
1,202,258
<DIVIDEND-INCOME>
0
<INTEREST-INCOME>
27,690
<OTHER-INCOME>
0
<EXPENSES-NET>
1,296
<NET-INVESTMENT-INCOME>
26,394
<REALIZED-GAINS-CURRENT>
90
<APPREC-INCREASE-CURRENT>
0
<NET-CHANGE-FROM-OPS>
26,484
<EQUALIZATION>
0
<DISTRIBUTIONS-OF-INCOME>
1,018
<DISTRIBUTIONS-OF-GAINS>
0
<DISTRIBUTIONS-OTHER>
0
<NUMBER-OF-SHARES-SOLD>
51,319
<NUMBER-OF-SHARES-REDEEMED>
69,459
<SHARES-REINVESTED>
844
<NET-CHANGE-IN-ASSETS>
93,758
<ACCUMULATED-NII-PRIOR>
0
<ACCUMULATED-GAINS-PRIOR>
(176)
<OVERDISTRIB-NII-PRIOR>
0
<OVERDIST-NET-GAINS-PRIOR>
0
<GROSS-ADVISORY-FEES>
1,159
<INTEREST-EXPENSE>
0
<GROSS-EXPENSE>
1,579
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46,260
<PER-SHARE-NAV-BEGIN>
1.000
<PER-SHARE-NII>
.022
<PER-SHARE-GAIN-APPREC>
0
<PER-SHARE-DIVIDEND>
.022
<PER-SHARE-DISTRIBUTIONS>
0
<RETURNS-OF-CAPITAL>
0
<PER-SHARE-NAV-END>
1.000
<EXPENSE-RATIO>
35
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000356173
<NAME> Colchester Street Trust
<SERIES>
<NUMBER> 63
<NAME> Treasury Only Portfolio - Class III
<MULTIPLIER> 1,000
<S>
<C>
<PERIOD-TYPE>
6-mos
<FISCAL-YEAR-END>
mar-31-2000
<PERIOD-END>
sep-30-1999
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1,184,066
<INVESTMENTS-AT-VALUE>
1,184,066
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21,556
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0
<OTHER-ITEMS-ASSETS>
0
<TOTAL-ASSETS>
1,205,622
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0
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0
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3,364
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3,364
<SENIOR-EQUITY>
0
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1,202,345
<SHARES-COMMON-STOCK>
78,812
<SHARES-COMMON-PRIOR>
100,829
<ACCUMULATED-NII-CURRENT>
0
<OVERDISTRIBUTION-NII>
0
<ACCUMULATED-NET-GAINS>
(87)
<OVERDISTRIBUTION-GAINS>
0
<ACCUM-APPREC-OR-DEPREC>
0
<NET-ASSETS>
1,202,258
<DIVIDEND-INCOME>
0
<INTEREST-INCOME>
27,690
<OTHER-INCOME>
0
<EXPENSES-NET>
1,296
<NET-INVESTMENT-INCOME>
26,394
<REALIZED-GAINS-CURRENT>
90
<APPREC-INCREASE-CURRENT>
0
<NET-CHANGE-FROM-OPS>
26,484
<EQUALIZATION>
0
<DISTRIBUTIONS-OF-INCOME>
1,924
<DISTRIBUTIONS-OF-GAINS>
0
<DISTRIBUTIONS-OTHER>
0
<NUMBER-OF-SHARES-SOLD>
172,618
<NUMBER-OF-SHARES-REDEEMED>
195,844
<SHARES-REINVESTED>
1,209
<NET-CHANGE-IN-ASSETS>
93,758
<ACCUMULATED-NII-PRIOR>
0
<ACCUMULATED-GAINS-PRIOR>
(176)
<OVERDISTRIB-NII-PRIOR>
0
<OVERDIST-NET-GAINS-PRIOR>
0
<GROSS-ADVISORY-FEES>
1,159
<INTEREST-EXPENSE>
0
<GROSS-EXPENSE>
1,579
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89,068
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1.000
<PER-SHARE-NII>
.022
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0
<PER-SHARE-DIVIDEND>
.022
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0
<RETURNS-OF-CAPITAL>
0
<PER-SHARE-NAV-END>
1.000
<EXPENSE-RATIO>
45
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000356173
<NAME> Colchester Street Trust
<SERIES>
<NUMBER> 51
<NAME> Domestic Portfolio - Class I
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<S>
<C>
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<FISCAL-YEAR-END>
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<PERIOD-END>
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3,312,149
<INVESTMENTS-AT-VALUE>
3,312,149
<RECEIVABLES>
6,224
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0
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0
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3,318,373
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79,955
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0
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5,651
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85,606
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0
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3,233,044
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2,285,023
<SHARES-COMMON-PRIOR>
2,229,977
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0
<OVERDISTRIBUTION-NII>
0
<ACCUMULATED-NET-GAINS>
(277)
<OVERDISTRIBUTION-GAINS>
0
<ACCUM-APPREC-OR-DEPREC>
0
<NET-ASSETS>
3,232,767
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0
<INTEREST-INCOME>
78,464
<OTHER-INCOME>
0
<EXPENSES-NET>
4,046
<NET-INVESTMENT-INCOME>
74,418
<REALIZED-GAINS-CURRENT>
(188)
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0
<NET-CHANGE-FROM-OPS>
74,230
<EQUALIZATION>
0
<DISTRIBUTIONS-OF-INCOME>
52,865
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0
<DISTRIBUTIONS-OTHER>
0
<NUMBER-OF-SHARES-SOLD>
10,796,621
<NUMBER-OF-SHARES-REDEEMED>
10,775,785
<SHARES-REINVESTED>
34,210
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80,839
<ACCUMULATED-NII-PRIOR>
0
<ACCUMULATED-GAINS-PRIOR>
(88)
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0
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0
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3,053
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0
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4,804
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2,140,198
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1.000
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.025
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0
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0
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1.000
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20
</TABLE>
<TABLE> <S> <C>
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<NAME> Colchester Street Trust
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<NAME> Domestic Portfolio - Class II
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<S>
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0
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0
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0
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0
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0
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0
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1,700,492
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6,707
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80,839
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0
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(88)
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0
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0
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0
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0
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1.000
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35
</TABLE>
<TABLE> <S> <C>
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<CIK> 0000356173
<NAME> Colchester Street Trust
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<NAME> Domestic Portfolio - Class III
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0
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0
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79,955
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85,606
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0
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636,984
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597,393
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0
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0
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3,232,767
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0
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78,464
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0
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4,046
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74,418
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(188)
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0
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74,230
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14,482
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0
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12,557
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80,839
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0
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0
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0
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0
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4,804
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617,645
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0
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0
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1.000
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45
</TABLE>
<TABLE> <S> <C>
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<CIK> 0000356173
<NAME> Colchester Street Trust
<SERIES>
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<NAME> Treasury Portfolio - Class III
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<S>
<C>
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0
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0
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0
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0
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22,854
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0
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7,515,676
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2,948,410
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2,921,855
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0
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0
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0
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0
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7,515,136
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0
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187,917
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0
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11,781
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176,136
<REALIZED-GAINS-CURRENT>
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0
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176,000
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0
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70,719
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0
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0
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13,944,300
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18,093
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285,254
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0
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(403)
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0
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0
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7,605
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0
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13,152
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3,146,618
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1.000
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.022
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0
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0
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.022
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0
<PER-SHARE-NAV-END>
1.000
<EXPENSE-RATIO>
45
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000356173
<NAME> Colchester Street Trust
<SERIES>
<NUMBER> 42
<NAME> Treasury Portfolio - Class II
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<S>
<C>
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7,518,322
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19,668
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0
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0
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22,854
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0
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7,515,676
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343,651
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372,750
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0
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0
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0
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7,515,136
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0
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187,917
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0
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11,781
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176,136
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(136)
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0
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176,000
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0
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7,329
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0
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0
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2,824,090
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1,595
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285,254
<ACCUMULATED-NII-PRIOR>
0
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0
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0
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7,605
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0
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13,152
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322,941
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1.000
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.023
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0
<PER-SHARE-DIVIDEND>
0
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.023
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0
<PER-SHARE-NAV-END>
1.000
<EXPENSE-RATIO>
35
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000356173
<NAME> Colchester Street Trust
<SERIES>
<NUMBER> 41
<NAME> Treasury Portfolio - Class 1
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<S>
<C>
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7,518,322
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19,668
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0
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0
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0
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22,854
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0
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7,515,676
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4,223,529
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3,935,593
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0
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0
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0
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0
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7,515,136
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0
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0
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11,781
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176,136
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(136)
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0
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176,000
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0
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98,089
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0
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0
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27,963,527
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46,090
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285,254
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0
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0
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0
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0
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13,152
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1.000
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0
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1.000
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20
</TABLE>
