<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0001047112
<NAME> THE MARSICO INVESTMENT FUND
<SERIES>
<NUMBER> 3
<NAME> 21ST CENTURY FUND
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<S> <C>
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<PERIOD-START> OCT-01-1999
<PERIOD-END> MAR-31-2000
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</TABLE>