<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This schedule contains summary financial information extracted from financ0al
statements dated October 31, 2000 included in the Annual Report and is qualified
in its entirety by reference to such financial statements.
</LEGEND>
<CIK> 0000277751
<NAME> JANUS ORION FUND
<SERIES>
<NUMBER> 024
<NAME> JANUS ORION FUND
<MULTIPLIER> 1000
<CURRENCY> U.S. DOLLARS
<S> <C>
<PERIOD-TYPE> YEAR
<FISCAL-YEAR-END> OCT-31-2000
<PERIOD-START> JUN-30-2000
<PERIOD-END> OCT-31-2000
<EXCHANGE-RATE> 1
<INVESTMENTS-AT-COST> 1,277,515
<INVESTMENTS-AT-VALUE> 1,128,195
<RECEIVABLES> 7,001
<ASSETS-OTHER> 74
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 1,135,270
<PAYABLE-FOR-SECURITIES> 4,874
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 2,768
<TOTAL-LIABILITIES> 7,642
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 1,292,582
<SHARES-COMMON-STOCK> 128,025
<SHARES-COMMON-PRIOR> 0
<ACCUMULATED-NII-CURRENT> 2,740
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> (18,374)
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> (149,320)
<NET-ASSETS> 1,127,628
<DIVIDEND-INCOME> 241
<INTEREST-INCOME> 6,901
<OTHER-INCOME> 0
<EXPENSES-NET> 4,114
<NET-INVESTMENT-INCOME> 3,028
<REALIZED-GAINS-CURRENT> (18,374)
<APPREC-INCREASE-CURRENT> (149,320)
<NET-CHANGE-FROM-OPS> (164,666)
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 0
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 149,794
<NUMBER-OF-SHARES-REDEEMED> (21,769)
<SHARES-REINVESTED> 0
<NET-CHANGE-IN-ASSETS> 1,127,628
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 0
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 2,393
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 4,197
<AVERAGE-NET-ASSETS> 1,086,834
<PER-SHARE-NAV-BEGIN> 10.000
<PER-SHARE-NII> 0.020
<PER-SHARE-GAIN-APPREC> (1.210)
<PER-SHARE-DIVIDEND> 0
<PER-SHARE-DISTRIBUTIONS> 0
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 8.810
<EXPENSE-RATIO> 1.140
</TABLE>
