<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000205323
<NAME> Fidelity Commonwealth Trust
<SERIES>
<NUMBER> 21
<NAME> Spartan 500 Index Fund
<MULTIPLIER> 1,000
<S>
<C>
<PERIOD-TYPE>
6-MOS
<FISCAL-YEAR-END>
APR-30-2001
<PERIOD-END>
OCT-31-2000
<INVESTMENTS-AT-COST>
7,171,987
<INVESTMENTS-AT-VALUE>
10,613,277
<RECEIVABLES>
33,690
<ASSETS-OTHER>
331
<OTHER-ITEMS-ASSETS>
0
<TOTAL-ASSETS>
10,647,298
<PAYABLE-FOR-SECURITIES>
74,755
<SENIOR-LONG-TERM-DEBT>
0
<OTHER-ITEMS-LIABILITIES>
362,008
<TOTAL-LIABILITIES>
436,763
<SENIOR-EQUITY>
0
<PAID-IN-CAPITAL-COMMON>
6,788,179
<SHARES-COMMON-STOCK>
103,417
<SHARES-COMMON-PRIOR>
100,635
<ACCUMULATED-NII-CURRENT>
50,281
<OVERDISTRIBUTION-NII>
0
<ACCUMULATED-NET-GAINS>
(71,093)
<OVERDISTRIBUTION-GAINS>
0
<ACCUM-APPREC-OR-DEPREC>
3,443,168
<NET-ASSETS>
10,210,535
<DIVIDEND-INCOME>
56,733
<INTEREST-INCOME>
3,344
<OTHER-INCOME>
378
<EXPENSES-NET>
9,861
<NET-INVESTMENT-INCOME>
50,594
<REALIZED-GAINS-CURRENT>
(7,952)
<APPREC-INCREASE-CURRENT>
(145,015)
<NET-CHANGE-FROM-OPS>
(102,373)
<EQUALIZATION>
0
<DISTRIBUTIONS-OF-INCOME>
30,390
<DISTRIBUTIONS-OF-GAINS>
0
<DISTRIBUTIONS-OTHER>
0
<NUMBER-OF-SHARES-SOLD>
9,318
<NUMBER-OF-SHARES-REDEEMED>
6,816
<SHARES-REINVESTED>
280
<NET-CHANGE-IN-ASSETS>
141,269
<ACCUMULATED-NII-PRIOR>
35,283
<ACCUMULATED-GAINS-PRIOR>
(60,822)
<OVERDISTRIB-NII-PRIOR>
0
<OVERDIST-NET-GAINS-PRIOR>
0
<GROSS-ADVISORY-FEES>
12,517
<INTEREST-EXPENSE>
0
<GROSS-EXPENSE>
19,391
<AVERAGE-NET-ASSETS>
10,188,215
<PER-SHARE-NAV-BEGIN>
100.060
<PER-SHARE-NII>
.500
<PER-SHARE-GAIN-APPREC>
(1.530)
<PER-SHARE-DIVIDEND>
.300
<PER-SHARE-DISTRIBUTIONS>
0
<RETURNS-OF-CAPITAL>
0
<PER-SHARE-NAV-END>
98.730
<EXPENSE-RATIO>
19
</TABLE>
