<TABLE> <S> <C>
<ARTICLE> 6
<SERIES>
<NUMBER> 034
<NAME> CALAMOS MARKET NEUTRAL FUND CLASS I
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> MAR-31-2000
<PERIOD-START> APR-01-1999
<PERIOD-END> SEP-30-2000
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<INVESTMENTS-AT-VALUE> 55,125,531
<RECEIVABLES> 1,595,524
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<PAYABLE-FOR-SECURITIES> 16,530
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 24,520,597
<TOTAL-LIABILITIES> 24,537,127
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 56,387,700
<SHARES-COMMON-STOCK> 4,308,096
<SHARES-COMMON-PRIOR> 1,109,639
<ACCUMULATED-NII-CURRENT> 81,809
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 2,023,290
<OVERDISTRIBUTION-GAINS> 0
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<DIVIDEND-INCOME> 384,957
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<OTHER-INCOME> 0
<EXPENSES-NET> 286,493
<NET-INVESTMENT-INCOME> 745,578
<REALIZED-GAINS-CURRENT> 1,341,149
<APPREC-INCREASE-CURRENT> 51,901
<NET-CHANGE-FROM-OPS> 2,138,628
<EQUALIZATION> 0
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<NUMBER-OF-SHARES-SOLD> 3,307,710
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<SHARES-REINVESTED> 43,282
<NET-CHANGE-IN-ASSETS> 44,102,297
<ACCUMULATED-NII-PRIOR> 3,245
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</TABLE>
