<TABLE> <S> <C>
<ARTICLE> 6
<SERIES>
<NUMBER> 060
<NAME> CALAMOS HIGH YIELD FUND
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> MAR-31-2000
<PERIOD-START> APR-01-1999
<PERIOD-END> MAR-31-2000
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<INVESTMENTS-AT-VALUE> 584,571
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<TOTAL-LIABILITIES> 43,508
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<PAID-IN-CAPITAL-COMMON> 762,711
<SHARES-COMMON-STOCK> 76,445
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<ACCUMULATED-NII-CURRENT> 844
<OVERDISTRIBUTION-NII> 0
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<OVERDISTRIBUTION-GAINS> (9,300)
<ACCUM-APPREC-OR-DEPREC> (26,001)
<NET-ASSETS> 728,254
<DIVIDEND-INCOME> 1,980
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<OTHER-INCOME> 0
<EXPENSES-NET> 8,505
<NET-INVESTMENT-INCOME> 25,055
<REALIZED-GAINS-CURRENT> (9,300)
<APPREC-INCREASE-CURRENT> (26,001)
<NET-CHANGE-FROM-OPS> (10,246)
<EQUALIZATION> 0
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<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 75,374
<NUMBER-OF-SHARES-REDEEMED> 1,434
<SHARES-REINVESTED> 2,056
<NET-CHANGE-IN-ASSETS> 728,254
<ACCUMULATED-NII-PRIOR> 0
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<INTEREST-EXPENSE> 0
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<AVERAGE-NET-ASSETS> 644,380
<PER-SHARE-NAV-BEGIN> 10.00
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<EXPENSE-RATIO> 2.00
</TABLE>
