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<PAGE> PAGE 4
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SIGNATURE SHELDON CURTIS
TITLE VICE PRESIDENT
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
SEMI-ANNUAL NSAR FINANCIALS 03-31-95
DEAN WITTER DEVELOPING GROWTH SECURITIES TRUST
</LEGEND>
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> SEP-30-1995
<PERIOD-END> MAR-31-1995
<INVESTMENTS-AT-COST> 283,312,650
<INVESTMENTS-AT-VALUE> 354,632,900
<RECEIVABLES> 10,393,051
<ASSETS-OTHER> 80,818
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 365,106,769
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<SENIOR-LONG-TERM-DEBT> 0
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<TOTAL-LIABILITIES> 8,445,414
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 287,468,807
<SHARES-COMMON-STOCK> 18,979,445
<SHARES-COMMON-PRIOR> 19,378,001
<ACCUMULATED-NII-CURRENT> (1,835,207)
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<OVERDISTRIBUTION-GAINS> 0
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<OTHER-INCOME> 0
<EXPENSES-NET> 2,973,701
<NET-INVESTMENT-INCOME> (1,865,407)
<REALIZED-GAINS-CURRENT> 114,441
<APPREC-INCREASE-CURRENT> 28,538,766
<NET-CHANGE-FROM-OPS> 26,787,800
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 0
<DISTRIBUTIONS-OF-GAINS> (2,979,381)
<DISTRIBUTIONS-OTHER> 0
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<NUMBER-OF-SHARES-REDEEMED> (9,553,839)
<SHARES-REINVESTED> 175,671
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<PER-SHARE-NII> (.10)
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<PER-SHARE-DISTRIBUTIONS> (.16)
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<PER-SHARE-NAV-END> 18.79
<EXPENSE-RATIO> (1.78)
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
