<TABLE> <S> <C>
<ARTICLE> 6
<SERIES>
<NUMBER> 052
<NAME> CALAMOS GLOBAL GROWTH & INCOME FUND CLASS B
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> MAR-31-2001
<PERIOD-START> APR-01-2000
<PERIOD-END> SEP-30-2000
<INVESTMENTS-AT-COST> 13,076,384
<INVESTMENTS-AT-VALUE> 14,843,222
<RECEIVABLES> 679,713
<ASSETS-OTHER> 578,211
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 16,101,146
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 77,204
<TOTAL-LIABILITIES> 77,204
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 11,848,042
<SHARES-COMMON-STOCK> 1,761,292
<SHARES-COMMON-PRIOR> 1,474,972
<ACCUMULATED-NII-CURRENT> 121,885
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 2,093,940
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 1,960,075
<NET-ASSETS> 16,023,942
<DIVIDEND-INCOME> 81,848
<INTEREST-INCOME> 148,663
<OTHER-INCOME> 0
<EXPENSES-NET> 145,807
<NET-INVESTMENT-INCOME> 84,704
<REALIZED-GAINS-CURRENT> 509,932
<APPREC-INCREASE-CURRENT> (681,060)
<NET-CHANGE-FROM-OPS> (86,424)
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 82,029
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 376,495
<NUMBER-OF-SHARES-REDEEMED> 98,307
<SHARES-REINVESTED> 8,132
<NET-CHANGE-IN-ASSETS> 2,406,083
<ACCUMULATED-NII-PRIOR> 119,210
<ACCUMULATED-GAINS-PRIOR> 1,584,008
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 74,182
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 224,130
<AVERAGE-NET-ASSETS> 9,428
<PER-SHARE-NAV-BEGIN> 9.11
<PER-SHARE-NII> 0
<PER-SHARE-GAIN-APPREC> (0.09)
<PER-SHARE-DIVIDEND> 0
<PER-SHARE-DISTRIBUTIONS> 0
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 9.02
<EXPENSE-RATIO> 2.50
</TABLE>
