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070 J020900 Y
070 K010900 Y
070 K020900 N
070 L010900 Y
070 L020900 Y
070 M010900 Y
070 M020900 Y
070 N010900 Y
070 N020900 N
070 O010900 Y
070 O020900 N
070 P010900 N
070 P020900 N
070 Q010900 N
070 Q020900 N
070 R010900 Y
070 R020900 N
071 A000900 6539
071 B000900 4091
071 C000900 1367
071 D000900 299
072 A000900 12
072 B000900 139
072 C000900 2
072 D000900 0
072 E000900 0
072 F000900 12
072 G000900 0
072 H000900 0
072 I000900 0
072 J000900 18
072 K000900 0
072 L000900 0
072 M000900 0
072 N000900 0
072 O000900 0
072 P000900 0
072 Q000900 0
072 R000900 10
072 S000900 0
<PAGE> PAGE 21
072 T000900 0
072 U000900 0
072 V000900 0
072 W000900 12
072 X000900 52
072 Y000900 36
072 Z000900 125
072AA000900 67
072BB000900 0
072CC010900 39
072CC020900 0
072DD010900 116
072DD020900 1
072EE000900 6
073 A010900 0.6802
073 A020900 0.6498
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074 A000900 2
074 B000900 0
074 C000900 165
074 D000900 3348
074 E000900 20
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074 H000900 0
074 I000900 5
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074 K000900 0
074 L000900 54
074 M000900 5
074 N000900 3599
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074 P000900 2
074 Q000900 0
074 R010900 0
074 R020900 0
074 R030900 0
074 R040900 672
074 S000900 0
074 T000900 2925
074 U010900 247
074 U020900 1
074 V010900 11.78
074 V020900 11.78
074 W000900 0.0000
074 X000900 2
074 Y000900 0
075 A000900 0
075 B000900 1572
076 000900 0.00
<PAGE> PAGE 22
049 001000 N
050 001000 N
051 001000 N
052 001000 Y
053 A001000 Y
053 B001000 Y
053 C001000 N
062 A001000 N
062 B001000 0.0
062 C001000 0.0
062 D001000 0.0
062 E001000 0.0
062 F001000 0.0
062 G001000 0.0
062 H001000 0.0
062 I001000 0.0
062 J001000 0.0
062 K001000 0.0
062 L001000 0.0
062 M001000 0.0
062 N001000 0.0
062 O001000 0.0
062 P001000 0.0
062 Q001000 0.0
062 R001000 0.0
070 A011000 Y
070 A021000 N
070 B011000 Y
070 B021000 N
070 C011000 Y
070 C021000 N
070 D011000 Y
070 D021000 N
070 E011000 Y
070 E021000 N
070 F011000 Y
070 F021000 N
070 G011000 Y
070 G021000 N
070 H011000 Y
070 H021000 N
070 I011000 Y
070 I021000 N
070 J011000 Y
070 J021000 N
070 K011000 Y
070 K021000 N
070 L011000 Y
070 L021000 N
070 M011000 Y
070 M021000 N
<PAGE> PAGE 23
070 N011000 Y
070 N021000 N
070 O011000 Y
070 O021000 N
070 P011000 N
070 P021000 N
070 Q011000 N
070 Q021000 N
070 R011000 Y
070 R021000 N
071 A001000 6590
071 B001000 1165
071 C001000 1717
071 D001000 101
072 A001000 8
074 A001000 51
074 B001000 0
074 C001000 1400
074 D001000 0
074 E001000 0
074 F001000 5543
074 G001000 0
074 H001000 0
074 I001000 0
074 J001000 13
074 K001000 0
074 L001000 43
074 M001000 6
074 N001000 7056
074 T001000 6846
075 A001000 0
075 B001000 2645
024 001100 Y
025 A001101 MORGAN STANLEY DEAN WITTER CO.
025 B001101 13-2655998
025 C001101 E
025 D001101 7
025 D001102 0
025 D001103 0
025 D001104 0
025 D001105 0
025 D001106 0
025 D001107 0
025 D001108 0
062 A001100 N
062 B001100 0.0
062 C001100 0.0
062 D001100 0.0
062 E001100 0.0
062 F001100 0.0
062 G001100 0.0
<PAGE> PAGE 24
062 H001100 0.0
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062 M001100 0.0
062 N001100 0.0
062 O001100 0.0
062 P001100 0.0
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062 R001100 0.0
066 A001100 Y
066 E001100 Y
067 001100 Y
068 A001100 N
068 B001100 N
069 001100 N
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073 A011100 0.0100
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074 A001100 49
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074 N001100 3175
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<PAGE> PAGE 25
074 Q001100 0
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074 V011100 13.46
074 V021100 13.42
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SIGNATURE ANITA E. FALICIA
TITLE ASST. TREASURER
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
[TYPE] EX-27
[DESCRIPTION] FDS JANUS ASPEN GROWTH PORT. INST.
[TEXT]
<ARTICLE> 6
<LEGEND>
This schedule contains summary financial information extracted from financial
"statements dated December 31, 1997 included in the Portfolio's Annual Report"
and is qualified in its entirety by reference to such financial statements.
</LEGEND>
<SERIES>
<NUMBER> 101
<NAME> JANUS ASPEN GROWTH PORT. INST.
<MULTIPLIER> "1,000 "
<CURRENCY> U.S. DOLLARS
<S> <C>
<PERIOD-TYPE> YEAR
<FISCAL-YEAR-END> DEC-31-1997
<PERIOD-START> JAN-01-1997
<PERIOD-END> DEC-31-1997
<EXCHANGE-RATE> 1.000
<INVESTMENTS-AT-COST> "535,511 "
<INVESTMENTS-AT-VALUE> "610,072 "
<RECEIVABLES> "7,023 "
<ASSETS-OTHER> 137
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> "617,232 "
<PAYABLE-FOR-SECURITIES> "7,529 "
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> "1,410 "
<TOTAL-LIABILITIES> "8,939 "
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> "485,858 "
<SHARES-COMMON-STOCK> "32,921 "
<SHARES-COMMON-PRIOR> "21,003 "
<ACCUMULATED-NII-CURRENT> 117
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> "47,894 "
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> "74,424 "
<NET-ASSETS> "608,281 "
<DIVIDEND-INCOME> "4,259 "
<INTEREST-INCOME> "3,410 "
<OTHER-INCOME> 0
<EXPENSES-NET> "3,319 "
<NET-INVESTMENT-INCOME> "4,350 "
<REALIZED-GAINS-CURRENT> "47,939 "
<APPREC-INCREASE-CURRENT> "39,125 "
<NET-CHANGE-FROM-OPS> "91,414 "
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> "(4,361)"
<DISTRIBUTIONS-OF-GAINS> "(9,976)"
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> "14,157 "
<NUMBER-OF-SHARES-REDEEMED> "(3,068)"
<SHARES-REINVESTED> 829
<NET-CHANGE-IN-ASSETS> "282,504 "
<ACCUMULATED-NII-PRIOR> 123
<ACCUMULATED-GAINS-PRIOR> "9,937 "
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> "3,120 "
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> "3,328 "
<AVERAGE-NET-ASSETS> "477,914 "
<PER-SHARE-NAV-BEGIN> 15.510
<PER-SHARE-NII> 0.150
<PER-SHARE-GAIN-APPREC> 3.340
<PER-SHARE-DIVIDEND> (0.150)
<PER-SHARE-DISTRIBUTIONS> (0.370)
<RETURNS-OF-CAPITAL> 0.000
<PER-SHARE-NAV-END> 18.480
<EXPENSE-RATIO> 0.700
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0.000
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This schedule contains summary financial information extracted from financial
"statements dated December 31, 1997 included in the Portfolio's Annual Report"
and is qualified in its entirety by reference to such financial statements.
</LEGEND>
<SERIES>
<NUMBER> 102
<NAME> JANUS ASPEN GROWTH PORT. RET.
<MULTIPLIER> "1,000 "
<CURRENCY> U.S. DOLLARS
<S> <C>
<PERIOD-TYPE> YEAR
<FISCAL-YEAR-END> DEC-31-1997
<PERIOD-START> MAY-01-1997
<PERIOD-END> DEC-31-1997
<EXCHANGE-RATE> 1.000
<INVESTMENTS-AT-COST> "535,511 "
<INVESTMENTS-AT-VALUE> "610,072 "
<RECEIVABLES> "7,023 "
<ASSETS-OTHER> 137
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> "617,232 "
<PAYABLE-FOR-SECURITIES> "7,529 "
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> "1,410 "
<TOTAL-LIABILITIES> "8,939 "
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> "485,858 "
<SHARES-COMMON-STOCK> 1
<SHARES-COMMON-PRIOR> 0
<ACCUMULATED-NII-CURRENT> 117
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> "47,894 "
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> "74,424 "
<NET-ASSETS> 12
<DIVIDEND-INCOME> "4,259 "
<INTEREST-INCOME> "3,410 "
<OTHER-INCOME> 0
<EXPENSES-NET> "3,319 "
<NET-INVESTMENT-INCOME> "4,350 "
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<NET-CHANGE-FROM-OPS> "91,414 "
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> "(4,361)"
<DISTRIBUTIONS-OF-GAINS> "(9,976)"
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 1
<NUMBER-OF-SHARES-REDEEMED> 0
<SHARES-REINVESTED> 0
<NET-CHANGE-IN-ASSETS> "282,504 "
<ACCUMULATED-NII-PRIOR> 123
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<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
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<GROSS-EXPENSE> "3,328 "
<AVERAGE-NET-ASSETS> 11
<PER-SHARE-NAV-BEGIN> 16.180
<PER-SHARE-NII> 0.040
<PER-SHARE-GAIN-APPREC> 2.710
<PER-SHARE-DIVIDEND> (0.100)
<PER-SHARE-DISTRIBUTIONS> (0.370)
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<EXPENSE-RATIO> 1.200
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0.000
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This schedule contains summary financial information extracted from financial
"statements dated December 31, 1997 included in the Portfolio's Annual Report"
and is qualified in its entirety by reference to such financial statements.
</LEGEND>
<SERIES>
<NUMBER> 201
<NAME> Janus Aspen Aggressive Growth Port. Inst.
<MULTIPLIER> "1,000 "
<CURRENCY> U.S. Dollars
<S> <C>
<PERIOD-TYPE> YEAR
<FISCAL-YEAR-END> DEC-31-1997
<PERIOD-START> JAN-01-1997
<PERIOD-END> DEC-31-1997
<EXCHANGE-RATE> 1.000
<INVESTMENTS-AT-COST> "400,592 "
<INVESTMENTS-AT-VALUE> "514,273 "
<RECEIVABLES> "7,540 "
<ASSETS-OTHER> 453
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> "522,266 "
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<OTHER-ITEMS-LIABILITIES> 459
<TOTAL-LIABILITIES> "14,055 "
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> "404,537 "
<SHARES-COMMON-STOCK> "24,727 "
<SHARES-COMMON-PRIOR> "21,040 "
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 0
<OVERDISTRIBUTION-GAINS> "9,994 "
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<NET-ASSETS> "508,198 "
<DIVIDEND-INCOME> "1,255 "
<INTEREST-INCOME> "1,476 "
<OTHER-INCOME> 0
<EXPENSES-NET> "3,167 "
<NET-INVESTMENT-INCOME> (436)
<REALIZED-GAINS-CURRENT> 788
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<NET-CHANGE-FROM-OPS> "57,157 "
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 0
<DISTRIBUTIONS-OF-GAINS> 0
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<NUMBER-OF-SHARES-SOLD> "11,104 "
<NUMBER-OF-SHARES-REDEEMED> "(7,417)"
<SHARES-REINVESTED> 0
<NET-CHANGE-IN-ASSETS> "124,518 "
<ACCUMULATED-NII-PRIOR> 2
<ACCUMULATED-GAINS-PRIOR> 0
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> "10,580 "
<GROSS-ADVISORY-FEES> "3,036 "
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> "3,180 "
<AVERAGE-NET-ASSETS> "418,464 "
<PER-SHARE-NAV-BEGIN> 18.240
<PER-SHARE-NII> 0.000
<PER-SHARE-GAIN-APPREC> 2.310
<PER-SHARE-DIVIDEND> 0.000
<PER-SHARE-DISTRIBUTIONS> 0.000
<RETURNS-OF-CAPITAL> 0.000
<PER-SHARE-NAV-END> 20.550
<EXPENSE-RATIO> 0.760
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0.000
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This schedule contains summary financial information extracted from financial
"statements dated December 31, 1997 included in the Portfolio's Annual Report"
and is qualified in its entirety by reference to such financial statements.
</LEGEND>
<SERIES>
<NUMBER> 202
<NAME> Janus Aspen Aggressive Growth Port. Ret
<MULTIPLIER> "1,000 "
<CURRENCY> U.S. Dollars
<S> <C>
<PERIOD-TYPE> YEAR
<FISCAL-YEAR-END> DEC-31-1997
<PERIOD-START> MAY-01-1997
<PERIOD-END> DEC-31-1997
<EXCHANGE-RATE> 1.000
<INVESTMENTS-AT-COST> "400,592 "
<INVESTMENTS-AT-VALUE> "514,273 "
<RECEIVABLES> "7,540 "
<ASSETS-OTHER> 453
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> "522,266 "
<PAYABLE-FOR-SECURITIES> "13,596 "
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 459
<TOTAL-LIABILITIES> "14,055 "
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> "404,537 "
<SHARES-COMMON-STOCK> 1
<SHARES-COMMON-PRIOR> 0
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 0
<OVERDISTRIBUTION-GAINS> "9,994 "
<ACCUM-APPREC-OR-DEPREC> "113,668 "
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<DIVIDEND-INCOME> "1,255 "
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<OTHER-INCOME> 0
<EXPENSES-NET> "3,167 "
<NET-INVESTMENT-INCOME> (436)
<REALIZED-GAINS-CURRENT> 788
<APPREC-INCREASE-CURRENT> "56,805 "
<NET-CHANGE-FROM-OPS> "57,157 "
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 0
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 1
<NUMBER-OF-SHARES-REDEEMED> 0
<SHARES-REINVESTED> 0
<NET-CHANGE-IN-ASSETS> "124,518 "
<ACCUMULATED-NII-PRIOR> 2
<ACCUMULATED-GAINS-PRIOR> 0
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> "10,580 "
<GROSS-ADVISORY-FEES> "3,036 "
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> "3,180 "
<AVERAGE-NET-ASSETS> 11
<PER-SHARE-NAV-BEGIN> 16.120
<PER-SHARE-NII> (0.060)
<PER-SHARE-GAIN-APPREC> 4.430
<PER-SHARE-DIVIDEND> 0.000
<PER-SHARE-DISTRIBUTIONS> 0.000
<RETURNS-OF-CAPITAL> 0.000
<PER-SHARE-NAV-END> 20.490
<EXPENSE-RATIO> 1.320
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0.000
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This schedule contains summary financial information extracted from financial
"statements dated December 31, 1997 included in the Portfolio's Annual Report"
and is qualified in its entirety by reference to such financial statements.
</LEGEND>
<SERIES>
<NUMBER> 301
<NAME> Janus Aspen Worldwide Growth Port. Inst.
<MULTIPLIER> "1,000 "
<CURRENCY> U.S. DOLLARS
<S> <C>
<PERIOD-TYPE> YEAR
<FISCAL-YEAR-END> DEC-31-1997
<PERIOD-START> JAN-01-1997
<PERIOD-END> DEC-31-1997
<EXCHANGE-RATE> 1.000
<INVESTMENTS-AT-COST> "1,364,374 "
<INVESTMENTS-AT-VALUE> "1,562,618 "
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<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> "1,327,595 "
<SHARES-COMMON-STOCK> "67,406 "
<SHARES-COMMON-PRIOR> "29,968 "
<ACCUMULATED-NII-CURRENT> "1,556 "
<OVERDISTRIBUTION-NII> 0
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<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> "204,158 "
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<DIVIDEND-INCOME> "12,277 "
<INTEREST-INCOME> "3,973 "
<OTHER-INCOME> 0
<EXPENSES-NET> "8,506 "
<NET-INVESTMENT-INCOME> "7,744 "
<REALIZED-GAINS-CURRENT> "46,834 "
<APPREC-INCREASE-CURRENT> "135,768 "
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<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> "(10,662)"
<DISTRIBUTIONS-OF-GAINS> "(8,190)"
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> "40,742 "
<NUMBER-OF-SHARES-REDEEMED> "(4,123)"
<SHARES-REINVESTED> 819
<NET-CHANGE-IN-ASSETS> "994,348 "
<ACCUMULATED-NII-PRIOR> "1,586 "
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<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> "7,533 "
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> "8,521 "
<AVERAGE-NET-ASSETS> "1,148,951 "
<PER-SHARE-NAV-BEGIN> 19.440
<PER-SHARE-NII> 0.160
<PER-SHARE-GAIN-APPREC> 4.140
<PER-SHARE-DIVIDEND> (0.190)
<PER-SHARE-DISTRIBUTIONS> (0.160)
<RETURNS-OF-CAPITAL> 0.000
<PER-SHARE-NAV-END> 23.390
<EXPENSE-RATIO> 0.740
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0.000
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This schedule contains summary financial information extracted from financial
"statements dated December 31, 1997 included in the Portfolio's Annual Report"
and is qualified in its entirety by reference to such financial statements.
</LEGEND>
<SERIES>
<NUMBER> 302
<NAME> Janus Aspen Worldwide Growth Port. Ret.
<MULTIPLIER> "1,000 "
<CURRENCY> U.S. DOLLARS
<S> <C>
<PERIOD-TYPE> YEAR
<FISCAL-YEAR-END> DEC-31-1997
<PERIOD-START> MAY-01-1997
<PERIOD-END> DEC-31-1997
<EXCHANGE-RATE> 1.000
<INVESTMENTS-AT-COST> "1,364,374 "
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<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> "1,593,560 "
<PAYABLE-FOR-SECURITIES> "14,305 "
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> "2,304 "
<TOTAL-LIABILITIES> "16,609 "
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> "1,327,595 "
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<SHARES-COMMON-PRIOR> 0
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<OVERDISTRIBUTION-GAINS> 0
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<EXPENSES-NET> "8,506 "
<NET-INVESTMENT-INCOME> "7,744 "
<REALIZED-GAINS-CURRENT> "46,834 "
<APPREC-INCREASE-CURRENT> "135,768 "
<NET-CHANGE-FROM-OPS> "190,346 "
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> "(10,662)"
<DISTRIBUTIONS-OF-GAINS> "(8,190)"
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 17
<NUMBER-OF-SHARES-REDEEMED> 0
<SHARES-REINVESTED> 0
<NET-CHANGE-IN-ASSETS> "994,348 "
<ACCUMULATED-NII-PRIOR> "1,586 "
<ACCUMULATED-GAINS-PRIOR> "7,886 "
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> "7,533 "
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> "8,521 "
<AVERAGE-NET-ASSETS> 11
<PER-SHARE-NAV-BEGIN> 20.720
<PER-SHARE-NII> 0.140
<PER-SHARE-GAIN-APPREC> 2.800
<PER-SHARE-DIVIDEND> (0.140)
<PER-SHARE-DISTRIBUTIONS> (0.160)
<RETURNS-OF-CAPITAL> 0.000
<PER-SHARE-NAV-END> 23.360
<EXPENSE-RATIO> 1.260
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0.000
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This schedule contains summary financial information extracted from financial
"statements dated December 31, 1997 included in the Portfolio's Annual Report"
and is qualified in its entirety by reference to such financial statements.
</LEGEND>
<SERIES>
<NUMBER> 401
<NAME> Janus Aspen Balanced Port. Inst.
<MULTIPLIER> "1,000 "
<CURRENCY> U.S. Dollars
<S> <C>
<PERIOD-TYPE> YEAR
<FISCAL-YEAR-END> DEC-31-1997
<PERIOD-START> JAN-01-1997
<PERIOD-END> DEC-31-1997
<EXCHANGE-RATE> 1.000
<INVESTMENTS-AT-COST> "350,008 "
<INVESTMENTS-AT-VALUE> "370,376 "
<RECEIVABLES> "8,833 "
<ASSETS-OTHER> 395
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> "379,604 "
<PAYABLE-FOR-SECURITIES> "16,896 "
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 287
<TOTAL-LIABILITIES> "17,183 "
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> "328,723 "
<SHARES-COMMON-STOCK> "20,751 "
<SHARES-COMMON-PRIOR> "5,789 "
<ACCUMULATED-NII-CURRENT> 129
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> "13,228 "
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> "20,341 "
<NET-ASSETS> "362,409 "
<DIVIDEND-INCOME> "1,751 "
<INTEREST-INCOME> "4,762 "
<OTHER-INCOME> 0
<EXPENSES-NET> "1,452 "
<NET-INVESTMENT-INCOME> "5,061 "
<REALIZED-GAINS-CURRENT> "13,320 "
<APPREC-INCREASE-CURRENT> "15,763 "
<NET-CHANGE-FROM-OPS> "34,144 "
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> "(5,104)"
<DISTRIBUTIONS-OF-GAINS> "(1,791)"
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> "15,268 "
<NUMBER-OF-SHARES-REDEEMED> (776)
<SHARES-REINVESTED> 470
<NET-CHANGE-IN-ASSETS> "276,941 "
<ACCUMULATED-NII-PRIOR> 114
<ACCUMULATED-GAINS-PRIOR> "1,758 "
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> "1,348 "
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> "1,457 "
<AVERAGE-NET-ASSETS> "176,432 "
<PER-SHARE-NAV-BEGIN> 14.770
<PER-SHARE-NII> 0.340
<PER-SHARE-GAIN-APPREC> 2.890
<PER-SHARE-DIVIDEND> (0.350)
<PER-SHARE-DISTRIBUTIONS> (0.180)
<RETURNS-OF-CAPITAL> 0.000
<PER-SHARE-NAV-END> 17.470
<EXPENSE-RATIO> 0.830
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0.000
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This schedule contains summary financial information extracted from financial
"statements dated December 31, 1997 included in the Portfolio's Annual Report"
and is qualified in its entirety by reference to such financial statements.
</LEGEND>
<SERIES>
<NUMBER> 402
<NAME> Janus Aspen Balanced Port. Ret.
<MULTIPLIER> "1,000 "
<CURRENCY> U.S. Dollars
<S> <C>
<PERIOD-TYPE> YEAR
<FISCAL-YEAR-END> DEC-31-1997
<PERIOD-START> MAY-01-1997
<PERIOD-END> DEC-31-1997
<EXCHANGE-RATE> 1.000
<INVESTMENTS-AT-COST> "350,008 "
<INVESTMENTS-AT-VALUE> "370,376 "
<RECEIVABLES> "8,833 "
<ASSETS-OTHER> 395
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> "379,604 "
<PAYABLE-FOR-SECURITIES> "16,896 "
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 287
<TOTAL-LIABILITIES> "17,183 "
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> "328,723 "
<SHARES-COMMON-STOCK> 1
<SHARES-COMMON-PRIOR> 0
<ACCUMULATED-NII-CURRENT> 129
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> "13,228 "
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> "20,341 "
<NET-ASSETS> 12
<DIVIDEND-INCOME> "1,751 "
<INTEREST-INCOME> "4,762 "
<OTHER-INCOME> 0
<EXPENSES-NET> "1,452 "
<NET-INVESTMENT-INCOME> "5,061 "
<REALIZED-GAINS-CURRENT> "13,320 "
<APPREC-INCREASE-CURRENT> "15,763 "
<NET-CHANGE-FROM-OPS> "34,144 "
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> "(5,104)"
<DISTRIBUTIONS-OF-GAINS> "(1,791)"
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 1
<NUMBER-OF-SHARES-REDEEMED> 0
<SHARES-REINVESTED> 0
<NET-CHANGE-IN-ASSETS> "276,941 "
<ACCUMULATED-NII-PRIOR> 114
<ACCUMULATED-GAINS-PRIOR> "1,758 "
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> "1,348 "
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> "1,457 "
<AVERAGE-NET-ASSETS> 11
<PER-SHARE-NAV-BEGIN> 15.380
<PER-SHARE-NII> 0.270
<PER-SHARE-GAIN-APPREC> 2.300
<PER-SHARE-DIVIDEND> (0.300)
<PER-SHARE-DISTRIBUTIONS> (0.180)
<RETURNS-OF-CAPITAL> 0.000
<PER-SHARE-NAV-END> 17.470
<EXPENSE-RATIO> 1.320
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0.000
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This schedule contains summary financial information extracted from financial
"statements dated December 31, 1997 included in the Portfolio's Annual Report"
and is qualified in its entirety by reference to such financial statements.
</LEGEND>
<SERIES>
<NUMBER> 501
<NAME> JANUS ASPEN FLEXIBLE INCOME PORT. INST.
<MULTIPLIER> "1,000 "
<CURRENCY> U.S. DOLLARS
<S> <C>
<PERIOD-TYPE> YEAR
<FISCAL-YEAR-END> DEC-31-1997
<PERIOD-START> JAN-01-1997
<PERIOD-END> DEC-31-1997
<EXCHANGE-RATE> 1.000
<INVESTMENTS-AT-COST> "51,296 "
<INVESTMENTS-AT-VALUE> "52,988 "
<RECEIVABLES> "1,068 "
<ASSETS-OTHER> 111
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> "54,167 "
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 58
<TOTAL-LIABILITIES> 58
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> "51,530 "
<SHARES-COMMON-STOCK> "4,593 "
<SHARES-COMMON-PRIOR> "2,252 "
<ACCUMULATED-NII-CURRENT> 208
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 672
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> "1,699 "
<NET-ASSETS> "54,098 "
<DIVIDEND-INCOME> 52
<INTEREST-INCOME> "2,744 "
<OTHER-INCOME> 0
<EXPENSES-NET> 274
<NET-INVESTMENT-INCOME> "2,522 "
<REALIZED-GAINS-CURRENT> 683
<APPREC-INCREASE-CURRENT> "1,050 "
<NET-CHANGE-FROM-OPS> "4,255 "
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> "(2,372)"
<DISTRIBUTIONS-OF-GAINS> (322)
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> "3,048 "
<NUMBER-OF-SHARES-REDEEMED> (941)
<SHARES-REINVESTED> 234
<NET-CHANGE-IN-ASSETS> "28,794 "
<ACCUMULATED-NII-PRIOR> 46
<ACCUMULATED-GAINS-PRIOR> 322
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 238
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 276
<AVERAGE-NET-ASSETS> "36,547 "
<PER-SHARE-NAV-BEGIN> 11.240
<PER-SHARE-NII> 0.670
<PER-SHARE-GAIN-APPREC> 0.620
<PER-SHARE-DIVIDEND> (0.640)
<PER-SHARE-DISTRIBUTIONS> (0.110)
<RETURNS-OF-CAPITAL> 0.000
<PER-SHARE-NAV-END> 11.780
<EXPENSE-RATIO> 0.750
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0.000
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This schedule contains summary financial information extracted from financial
"statements dated December 31, 1997 included in the Portfolio's Annual Report"
and is qualified in its entirety by reference to such financial statements.
</LEGEND>
<SERIES>
<NUMBER> 502
<NAME> JANUS ASPEN FLEXIBLE INCOME PORT. RET
<MULTIPLIER> "1,000 "
<CURRENCY> U.S. DOLLARS
<S> <C>
<PERIOD-TYPE> YEAR
<FISCAL-YEAR-END> DEC-31-1997
<PERIOD-START> MAY-01-1997
<PERIOD-END> DEC-31-1997
<EXCHANGE-RATE> 1.000
<INVESTMENTS-AT-COST> "51,296 "
<INVESTMENTS-AT-VALUE> "52,988 "
<RECEIVABLES> "1,068 "
<ASSETS-OTHER> 111
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> "54,167 "
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 58
<TOTAL-LIABILITIES> 58
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> "51,530 "
<SHARES-COMMON-STOCK> 1
<SHARES-COMMON-PRIOR> 0
<ACCUMULATED-NII-CURRENT> 208
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 672
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> "1,699 "
<NET-ASSETS> 11
<DIVIDEND-INCOME> 52
<INTEREST-INCOME> "2,744 "
<OTHER-INCOME> 0
<EXPENSES-NET> 274
<NET-INVESTMENT-INCOME> "2,522 "
<REALIZED-GAINS-CURRENT> 683
<APPREC-INCREASE-CURRENT> "1,050 "
<NET-CHANGE-FROM-OPS> "4,255 "
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> "(2,372)"
<DISTRIBUTIONS-OF-GAINS> (322)
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 1
<NUMBER-OF-SHARES-REDEEMED> 0
<SHARES-REINVESTED> 0
<NET-CHANGE-IN-ASSETS> "28,794 "
<ACCUMULATED-NII-PRIOR> 46
<ACCUMULATED-GAINS-PRIOR> 322
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 238
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 276
<AVERAGE-NET-ASSETS> 10
<PER-SHARE-NAV-BEGIN> 11.410
<PER-SHARE-NII> 0.500
<PER-SHARE-GAIN-APPREC> 0.580
<PER-SHARE-DIVIDEND> (0.610)
<PER-SHARE-DISTRIBUTIONS> (0.110)
<RETURNS-OF-CAPITAL> 0.000
<PER-SHARE-NAV-END> 11.770
<EXPENSE-RATIO> 1.230
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0.000
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This schedule contains summary financial information extracted from financial
"statements dated December 31, 1997 included in the Portfolio's Annual Report"
and is qualified in its entirety by reference to such financial statements.
</LEGEND>
<SERIES>
<NUMBER> 601
<NAME> JANUS ASPEN SHORT TERM BOND PORT. INST.
<MULTIPLIER> "1,000 "
<CURRENCY> U.S. DOLLARS
<S> <C>
<PERIOD-TYPE> YEAR
<FISCAL-YEAR-END> DEC-31-1997
<PERIOD-START> JAN-01-1997
<PERIOD-END> DEC-31-1997
<EXCHANGE-RATE> 1.000
<INVESTMENTS-AT-COST> "2,702 "
<INVESTMENTS-AT-VALUE> "2,715 "
<RECEIVABLES> 35
<ASSETS-OTHER> 4
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> "2,754 "
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 9
<TOTAL-LIABILITIES> 9
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> "2,646 "
<SHARES-COMMON-STOCK> 308
<SHARES-COMMON-PRIOR> "1,193 "
<ACCUMULATED-NII-CURRENT> 39
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 47
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 13
<NET-ASSETS> "2,735 "
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 805
<OTHER-INCOME> 0
<EXPENSES-NET> 81
<NET-INVESTMENT-INCOME> 724
<REALIZED-GAINS-CURRENT> 48
<APPREC-INCREASE-CURRENT> 18
<NET-CHANGE-FROM-OPS> 790
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (722)
<DISTRIBUTIONS-OF-GAINS> (4)
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> "2,279 "
<NUMBER-OF-SHARES-REDEEMED> "(3,242)"
<SHARES-REINVESTED> 78
<NET-CHANGE-IN-ASSETS> "(9,156)"
<ACCUMULATED-NII-PRIOR> 36
<ACCUMULATED-GAINS-PRIOR> 3
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 81
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 113
<AVERAGE-NET-ASSETS> "12,407 "
<PER-SHARE-NAV-BEGIN> 9.970
<PER-SHARE-NII> 1.850
<PER-SHARE-GAIN-APPREC> (1.190)
<PER-SHARE-DIVIDEND> 0.000
<PER-SHARE-DISTRIBUTIONS> (1.750)
<RETURNS-OF-CAPITAL> 0.000
<PER-SHARE-NAV-END> 8.880
<EXPENSE-RATIO> 0.650
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0.000
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This schedule contains summary financial information extracted from financial
"statements dated December 31, 1997 included in the Portfolio's Annual Report"
and is qualified in its entirety by reference to such financial statements.
</LEGEND>
<SERIES>
<NUMBER> 602
<NAME> JANUS ASPEN SHORT TERM BOND PORT. RET.
<MULTIPLIER> "1,000 "
<CURRENCY> U.S. DOLLARS
<S> <C>
<PERIOD-TYPE> YEAR
<FISCAL-YEAR-END> DEC-31-1997
<PERIOD-START> MAY-01-1997
<PERIOD-END> DEC-31-1997
<EXCHANGE-RATE> 1.000
<INVESTMENTS-AT-COST> "2,702 "
<INVESTMENTS-AT-VALUE> "2,715 "
<RECEIVABLES> 35
<ASSETS-OTHER> 4
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> "2,754 "
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 9
<TOTAL-LIABILITIES> 9
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> "2,646 "
<SHARES-COMMON-STOCK> 1
<SHARES-COMMON-PRIOR> 0
<ACCUMULATED-NII-CURRENT> 39
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 47
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 13
<NET-ASSETS> 10
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 805
<OTHER-INCOME> 0
<EXPENSES-NET> 81
<NET-INVESTMENT-INCOME> 724
<REALIZED-GAINS-CURRENT> 48
<APPREC-INCREASE-CURRENT> 18
<NET-CHANGE-FROM-OPS> 790
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (722)
<DISTRIBUTIONS-OF-GAINS> (4)
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 1
<NUMBER-OF-SHARES-REDEEMED> 0
<SHARES-REINVESTED> 0
<NET-CHANGE-IN-ASSETS> "(9,156)"
<ACCUMULATED-NII-PRIOR> 36
<ACCUMULATED-GAINS-PRIOR> 3
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 81
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 113
<AVERAGE-NET-ASSETS> 10
<PER-SHARE-NAV-BEGIN> 10.140
<PER-SHARE-NII> 0.560
<PER-SHARE-GAIN-APPREC> (0.110)
<PER-SHARE-DIVIDEND> (1.710)
<PER-SHARE-DISTRIBUTIONS> 0.000
<RETURNS-OF-CAPITAL> 0.000
<PER-SHARE-NAV-END> 8.880
<EXPENSE-RATIO> 1.200
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0.000
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This schedule contains summary financial information extracted from financial
"statements dated December 31, 1997 included in the Portfolio's Annual Report"
and is qualified in its entirety by reference to such financial statements.
</LEGEND>
<SERIES>
<NUMBER> 701
<NAME> JANUS ASPEN INTERNATIONAL PORT. INST.
<MULTIPLIER> "1,000 "
<CURRENCY> U.S. DOLLARS
<S> <C>
<PERIOD-TYPE> YEAR
<FISCAL-YEAR-END> DEC-31-1997
<PERIOD-START> JAN-01-1997
<PERIOD-END> DEC-31-1997
<EXCHANGE-RATE> 1.000
<INVESTMENTS-AT-COST> "152,691 "
<INVESTMENTS-AT-VALUE> "164,336 "
<RECEIVABLES> "1,220 "
<ASSETS-OTHER> 651
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> "166,207 "
<PAYABLE-FOR-SECURITIES> "1,443 "
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> "3,662 "
<TOTAL-LIABILITIES> "5,105 "
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> "149,136 "
<SHARES-COMMON-STOCK> "8,716 "
<SHARES-COMMON-PRIOR> "1,730 "
<ACCUMULATED-NII-CURRENT> 80
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 0
<OVERDISTRIBUTION-GAINS> 206
<ACCUM-APPREC-OR-DEPREC> "12,092 "
<NET-ASSETS> "161,091 "
<DIVIDEND-INCOME> 940
<INTEREST-INCOME> 651
<OTHER-INCOME> 0
<EXPENSES-NET> 922
<NET-INVESTMENT-INCOME> 669
<REALIZED-GAINS-CURRENT> (148)
<APPREC-INCREASE-CURRENT> "10,109 "
<NET-CHANGE-FROM-OPS> "10,630 "
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (645)
<DISTRIBUTIONS-OF-GAINS> (220)
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> "10,297 "
<NUMBER-OF-SHARES-REDEEMED> "(3,357)"
<SHARES-REINVESTED> 46
<NET-CHANGE-IN-ASSETS> "133,910 "
<ACCUMULATED-NII-PRIOR> 12
<ACCUMULATED-GAINS-PRIOR> 207
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 645
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 923
<AVERAGE-NET-ASSETS> "96,164 "
<PER-SHARE-NAV-BEGIN> 15.720
<PER-SHARE-NII> 0.110
<PER-SHARE-GAIN-APPREC> 2.800
<PER-SHARE-DIVIDEND> (0.110)
<PER-SHARE-DISTRIBUTIONS> (0.040)
<RETURNS-OF-CAPITAL> 0.000
<PER-SHARE-NAV-END> 18.480
<EXPENSE-RATIO> 0.960
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0.000
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This schedule contains summary financial information extracted from financial
"statements dated December 31, 1997 included in the Portfolio's Annual Report"
and is qualified in its entirety by reference to such financial statements.
</LEGEND>
<SERIES>
<NUMBER> 702
<NAME> JANUS ASPEN INTERNATIONAL PORT. RET.
<MULTIPLIER> "1,000 "
<CURRENCY> U.S. DOLLARS
<S> <C>
<PERIOD-TYPE> YEAR
<FISCAL-YEAR-END> DEC-31-1997
<PERIOD-START> MAY-01-1997
<PERIOD-END> DEC-31-1997
<EXCHANGE-RATE> 1.000
<INVESTMENTS-AT-COST> "152,691 "
<INVESTMENTS-AT-VALUE> "164,336 "
<RECEIVABLES> "1,220 "
<ASSETS-OTHER> 651
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> "166,207 "
<PAYABLE-FOR-SECURITIES> "1,443 "
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> "3,662 "
<TOTAL-LIABILITIES> "5,105 "
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> "149,136 "
<SHARES-COMMON-STOCK> 1
<SHARES-COMMON-PRIOR> 0
<ACCUMULATED-NII-CURRENT> 80
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 0
<OVERDISTRIBUTION-GAINS> 206
<ACCUM-APPREC-OR-DEPREC> "12,092 "
<NET-ASSETS> 11
<DIVIDEND-INCOME> 940
<INTEREST-INCOME> 651
<OTHER-INCOME> 0
<EXPENSES-NET> 922
<NET-INVESTMENT-INCOME> 669
<REALIZED-GAINS-CURRENT> (148)
<APPREC-INCREASE-CURRENT> "10,109 "
<NET-CHANGE-FROM-OPS> "10,630 "
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (645)
<DISTRIBUTIONS-OF-GAINS> (220)
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 1
<NUMBER-OF-SHARES-REDEEMED> 0
<SHARES-REINVESTED> 0
<NET-CHANGE-IN-ASSETS> "133,910 "
<ACCUMULATED-NII-PRIOR> 12
<ACCUMULATED-GAINS-PRIOR> 207
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 645
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 923
<AVERAGE-NET-ASSETS> 11
<PER-SHARE-NAV-BEGIN> 16.800
<PER-SHARE-NII> 0.040
<PER-SHARE-GAIN-APPREC> 1.730
<PER-SHARE-DIVIDEND> (0.090)
<PER-SHARE-DISTRIBUTIONS> (0.040)
<RETURNS-OF-CAPITAL> 0.000
<PER-SHARE-NAV-END> 18.440
<EXPENSE-RATIO> 1.450
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0.000
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This schedule contains summary financial information extracted from financial
"statements dated December 31, 1997 included in the Portfolio's Annual Report"
and is qualified in its entirety by reference to such financial statements.
</LEGEND>
<SERIES>
<NUMBER> 801
<NAME> Janus Aspen Money Market Port. Inst.
<MULTIPLIER> "1,000 "
<CURRENCY> U.S. Dollars
<S> <C>
<PERIOD-TYPE> YEAR
<FISCAL-YEAR-END> DEC-31-1997
<PERIOD-START> JAN-01-1997
<PERIOD-END> DEC-31-1997
<EXCHANGE-RATE> 1.000
<INVESTMENTS-AT-COST> "14,480 "
<INVESTMENTS-AT-VALUE> "14,480 "
<RECEIVABLES> "1,084 "
<ASSETS-OTHER> 2
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> "15,566 "
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 182
<TOTAL-LIABILITIES> 182
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> "15,384 "
<SHARES-COMMON-STOCK> "15,374 "
<SHARES-COMMON-PRIOR> "6,106 "
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 0
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 0
<NET-ASSETS> "15,374 "
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 506
<OTHER-INCOME> 0
<EXPENSES-NET> 45
<NET-INVESTMENT-INCOME> 461
<REALIZED-GAINS-CURRENT> 0
<APPREC-INCREASE-CURRENT> 0
<NET-CHANGE-FROM-OPS> 461
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (461)
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> "78,614 "
<NUMBER-OF-SHARES-REDEEMED> "(69,807)"
<SHARES-REINVESTED> 461
<NET-CHANGE-IN-ASSETS> "9,278 "
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 0
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 22
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 47
<AVERAGE-NET-ASSETS> "8,926 "
<PER-SHARE-NAV-BEGIN> 1.000
<PER-SHARE-NII> 0.050
<PER-SHARE-GAIN-APPREC> 0.000
<PER-SHARE-DIVIDEND> (0.050)
<PER-SHARE-DISTRIBUTIONS> 0.000
<RETURNS-OF-CAPITAL> 0.000
<PER-SHARE-NAV-END> 1.000
<EXPENSE-RATIO> 0.500
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0.000
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This schedule contains summary financial information extracted from financial
"statements dated December 31, 1997 included in the Portfolio's Annual Report"
and is qualified in its entirety by reference to such financial statements.
</LEGEND>
<SERIES>
<NUMBER> 802
<NAME> Janus Aspen Money Market Port. Ret.
<MULTIPLIER> "1,000 "
<CURRENCY> U.S. Dollars
<S> <C>
<PERIOD-TYPE> YEAR
<FISCAL-YEAR-END> DEC-31-1997
<PERIOD-START> MAY-01-1997
<PERIOD-END> DEC-31-1997
<EXCHANGE-RATE> 1.000
<INVESTMENTS-AT-COST> "14,480 "
<INVESTMENTS-AT-VALUE> "14,480 "
<RECEIVABLES> "1,084 "
<ASSETS-OTHER> 2
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> "15,566 "
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 182
<TOTAL-LIABILITIES> 182
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> "15,384 "
<SHARES-COMMON-STOCK> 10
<SHARES-COMMON-PRIOR> 0
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 0
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 0
<NET-ASSETS> 10
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 506
<OTHER-INCOME> 0
<EXPENSES-NET> 45
<NET-INVESTMENT-INCOME> 461
<REALIZED-GAINS-CURRENT> 0
<APPREC-INCREASE-CURRENT> 0
<NET-CHANGE-FROM-OPS> 461
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (461)
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 10
<NUMBER-OF-SHARES-REDEEMED> 0
<SHARES-REINVESTED> 0
<NET-CHANGE-IN-ASSETS> "9,278 "
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 0
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 22
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 47
<AVERAGE-NET-ASSETS> 10
<PER-SHARE-NAV-BEGIN> 1.000
<PER-SHARE-NII> 0.030
<PER-SHARE-GAIN-APPREC> 0.000
<PER-SHARE-DIVIDEND> (0.030)
<PER-SHARE-DISTRIBUTIONS> 0.000
<RETURNS-OF-CAPITAL> 0.000
<PER-SHARE-NAV-END> 1.000
<EXPENSE-RATIO> 1.000
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0.000
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This schedule contains summary financial information extracted from financial
"statements dated December 31, 1997 included in the Portfolio's Annual Report"
and is qualified in its entirety by reference to such financial statements.
</LEGEND>
<SERIES>
<NUMBER> 901
<NAME> JANUS ASPEN HIGH-YIELD PORT. INST.
<MULTIPLIER> "1,000 "
<CURRENCY> U.S. DOLLARS
<S> <C>
<PERIOD-TYPE> YEAR
<FISCAL-YEAR-END> DEC-31-1997
<PERIOD-START> JAN-01-1997
<PERIOD-END> DEC-31-1997
<EXCHANGE-RATE> 1.000
<INVESTMENTS-AT-COST> "3,474 "
<INVESTMENTS-AT-VALUE> "3,538 "
<RECEIVABLES> 54
<ASSETS-OTHER> 7
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> "3,599 "
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 674
<TOTAL-LIABILITIES> 674
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> "2,783 "
<SHARES-COMMON-STOCK> 247
<SHARES-COMMON-PRIOR> 72
<ACCUMULATED-NII-CURRENT> 12
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 66
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 64
<NET-ASSETS> "2,914 "
<DIVIDEND-INCOME> 2
<INTEREST-INCOME> 139
<OTHER-INCOME> 0
<EXPENSES-NET> 16
<NET-INVESTMENT-INCOME> 125
<REALIZED-GAINS-CURRENT> 67
<APPREC-INCREASE-CURRENT> 39
<NET-CHANGE-FROM-OPS> 231
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (117)
<DISTRIBUTIONS-OF-GAINS> (6)
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 343
<NUMBER-OF-SHARES-REDEEMED> (179)
<SHARES-REINVESTED> 11
<NET-CHANGE-IN-ASSETS> "2,142 "
<ACCUMULATED-NII-PRIOR> 2
<ACCUMULATED-GAINS-PRIOR> 6
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 12
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 52
<AVERAGE-NET-ASSETS> "1,565 "
<PER-SHARE-NAV-BEGIN> 10.830
<PER-SHARE-NII> 0.700
<PER-SHARE-GAIN-APPREC> 0.990
<PER-SHARE-DIVIDEND> (0.680)
<PER-SHARE-DISTRIBUTIONS> (0.060)
<RETURNS-OF-CAPITAL> 0.000
<PER-SHARE-NAV-END> 11.780
<EXPENSE-RATIO> 1.000
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0.000
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This schedule contains summary financial information extracted from financial
"statements dated December 31, 1997 included in the Portfolio's Annual Report"
and is qualified in its entirety by reference to such financial statements.
</LEGEND>
<SERIES>
<NUMBER> 902
<NAME> JANUS ASPEN HIGH-YIELD PORT. RET.
<MULTIPLIER> "1,000 "
<CURRENCY> U.S. DOLLARS
<S> <C>
<PERIOD-TYPE> YEAR
<FISCAL-YEAR-END> DEC-31-1997
<PERIOD-START> MAY-01-1997
<PERIOD-END> DEC-31-1997
<EXCHANGE-RATE> 1.000
<INVESTMENTS-AT-COST> "3,474 "
<INVESTMENTS-AT-VALUE> "3,538 "
<RECEIVABLES> 54
<ASSETS-OTHER> 7
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> "3,599 "
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 674
<TOTAL-LIABILITIES> 674
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> "2,783 "
<SHARES-COMMON-STOCK> 1
<SHARES-COMMON-PRIOR> 0
<ACCUMULATED-NII-CURRENT> 12
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 66
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 64
<NET-ASSETS> 11
<DIVIDEND-INCOME> 2
<INTEREST-INCOME> 139
<OTHER-INCOME> 0
<EXPENSES-NET> 16
<NET-INVESTMENT-INCOME> 125
<REALIZED-GAINS-CURRENT> 67
<APPREC-INCREASE-CURRENT> 39
<NET-CHANGE-FROM-OPS> 231
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (117)
<DISTRIBUTIONS-OF-GAINS> (6)
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 1
<NUMBER-OF-SHARES-REDEEMED> 0
<SHARES-REINVESTED> 0
<NET-CHANGE-IN-ASSETS> "2,142 "
<ACCUMULATED-NII-PRIOR> 2
<ACCUMULATED-GAINS-PRIOR> 6
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 12
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 52
<AVERAGE-NET-ASSETS> 11
<PER-SHARE-NAV-BEGIN> 11.190
<PER-SHARE-NII> 0.590
<PER-SHARE-GAIN-APPREC> 0.710
<PER-SHARE-DIVIDEND> (0.650)
<PER-SHARE-DISTRIBUTIONS> (0.060)
<RETURNS-OF-CAPITAL> 0.000
<PER-SHARE-NAV-END> 11.780
<EXPENSE-RATIO> 1.500
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0.000
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This schedule contains summary financial information extracted from financial
"statements dated December 31, 1997 included in the Portfolio's Annual Report"
and is qualified in its entirety by reference to such financial statements.
</LEGEND>
<SERIES>
<NUMBER> 111
<NAME> JANUS ASPEN CAPITAL APPR. PORT. INST.
<MULTIPLIER> "1,000 "
<CURRENCY> U.S. DOLLARS
<S> <C>
<PERIOD-TYPE> YEAR
<FISCAL-YEAR-END> DEC-31-1997
<PERIOD-START> MAY-01-1997
<PERIOD-END> DEC-31-1997
<EXCHANGE-RATE> 1.000
<INVESTMENTS-AT-COST> "6,678 "
<INVESTMENTS-AT-VALUE> "6,943 "
<RECEIVABLES> 56
<ASSETS-OTHER> 57
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> "7,056 "
<PAYABLE-FOR-SECURITIES> 198
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 12
<TOTAL-LIABILITIES> 210
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> "6,723 "
<SHARES-COMMON-STOCK> 541
<SHARES-COMMON-PRIOR> 0
<ACCUMULATED-NII-CURRENT> 4
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> (146)
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 265
<NET-ASSETS> "6,833 "
<DIVIDEND-INCOME> 4
<INTEREST-INCOME> 44
<OTHER-INCOME> 0
<EXPENSES-NET> 23
<NET-INVESTMENT-INCOME> 25
<REALIZED-GAINS-CURRENT> (146)
<APPREC-INCREASE-CURRENT> 265
<NET-CHANGE-FROM-OPS> 144
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (21)
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 765
<NUMBER-OF-SHARES-REDEEMED> (226)
<SHARES-REINVESTED> 2
<NET-CHANGE-IN-ASSETS> "6,846 "
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 0
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 13
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 32
<AVERAGE-NET-ASSETS> "2,632 "
<PER-SHARE-NAV-BEGIN> 10.000
<PER-SHARE-NII> 0.050
<PER-SHARE-GAIN-APPREC> 2.610
<PER-SHARE-DIVIDEND> (0.040)
<PER-SHARE-DISTRIBUTIONS> 0.000
<RETURNS-OF-CAPITAL> 0.000
<PER-SHARE-NAV-END> 12.620
<EXPENSE-RATIO> 1.260
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0.000
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This schedule contains summary financial information extracted from financial
"statements dated December 31, 1997 included in the Portfolio's Annual Report"
and is qualified in its entirety by reference to such financial statements.
</LEGEND>
<SERIES>
<NUMBER> 112
<NAME> JANUS ASPEN CAPITAL APPR. PORT. RET.
<MULTIPLIER> "1,000 "
<CURRENCY> U.S. DOLLARS
<S> <C>
<PERIOD-TYPE> YEAR
<FISCAL-YEAR-END> DEC-31-1997
<PERIOD-START> MAY-01-1997
<PERIOD-END> DEC-31-1997
<EXCHANGE-RATE> 1.000
<INVESTMENTS-AT-COST> "6,678 "
<INVESTMENTS-AT-VALUE> "6,943 "
<RECEIVABLES> 56
<ASSETS-OTHER> 57
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> "7,056 "
<PAYABLE-FOR-SECURITIES> 198
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 12
<TOTAL-LIABILITIES> 210
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> "6,723 "
<SHARES-COMMON-STOCK> 1
<SHARES-COMMON-PRIOR> 0
<ACCUMULATED-NII-CURRENT> 4
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> (146)
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 265
<NET-ASSETS> 13
<DIVIDEND-INCOME> 4
<INTEREST-INCOME> 44
<OTHER-INCOME> 0
<EXPENSES-NET> 23
<NET-INVESTMENT-INCOME> 25
<REALIZED-GAINS-CURRENT> (146)
<APPREC-INCREASE-CURRENT> 265
<NET-CHANGE-FROM-OPS> 144
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (21)
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 1
<NUMBER-OF-SHARES-REDEEMED> 0
<SHARES-REINVESTED> 0
<NET-CHANGE-IN-ASSETS> "6,846 "
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 0
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 13
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 32
<AVERAGE-NET-ASSETS> 12
<PER-SHARE-NAV-BEGIN> 10.000
<PER-SHARE-NII> 0.120
<PER-SHARE-GAIN-APPREC> 2.500
<PER-SHARE-DIVIDEND> 0.000
<PER-SHARE-DISTRIBUTIONS> 0.000
<RETURNS-OF-CAPITAL> 0.000
<PER-SHARE-NAV-END> 12.620
<EXPENSE-RATIO> 1.730
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0.000
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This schedule contains summary financial information extracted from financial
"statements dated December 31, 1997 included in the Portfolio's Annual Report"
and is qualified in its entirety by reference to such financial statements.
</LEGEND>
<SERIES>
<NUMBER> 121
<NAME> JANUS ASPEN EQUITY INC. PORT. INST.
<MULTIPLIER> "1,000 "
<CURRENCY> U.S. DOLLARS
<S> <C>
<PERIOD-TYPE> YEAR
<FISCAL-YEAR-END> DEC-31-1997
<PERIOD-START> MAY-01-1997
<PERIOD-END> DEC-31-1997
<EXCHANGE-RATE> 1.000
<INVESTMENTS-AT-COST> "2,947 "
<INVESTMENTS-AT-VALUE> "3,027 "
<RECEIVABLES> 74
<ASSETS-OTHER> 74
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> "3,175 "
<PAYABLE-FOR-SECURITIES> 107
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 8
<TOTAL-LIABILITIES> 115
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> "2,908 "
<SHARES-COMMON-STOCK> 226
<SHARES-COMMON-PRIOR> 0
<ACCUMULATED-NII-CURRENT> 1
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 71
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 80
<NET-ASSETS> "3,047 "
<DIVIDEND-INCOME> 7
<INTEREST-INCOME> 5
<OTHER-INCOME> 0
<EXPENSES-NET> 9
<NET-INVESTMENT-INCOME> 3
<REALIZED-GAINS-CURRENT> 71
<APPREC-INCREASE-CURRENT> 80
<NET-CHANGE-FROM-OPS> 154
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (2)
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 301
<NUMBER-OF-SHARES-REDEEMED> (75)
<SHARES-REINVESTED> 0
<NET-CHANGE-IN-ASSETS> "3,060 "
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 0
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 6
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 43
<AVERAGE-NET-ASSETS> "1,101 "
<PER-SHARE-NAV-BEGIN> 10.000
<PER-SHARE-NII> 0.010
<PER-SHARE-GAIN-APPREC> 3.460
<PER-SHARE-DIVIDEND> (0.010)
<PER-SHARE-DISTRIBUTIONS> 0.000
<RETURNS-OF-CAPITAL> 0.000
<PER-SHARE-NAV-END> 13.460
<EXPENSE-RATIO> 1.250
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0.000
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This schedule contains summary financial information extracted from financial
"statements dated December 31, 1997 included in the Portfolio's Annual Report"
and is qualified in its entirety by reference to such financial statements.
</LEGEND>
<SERIES>
<NUMBER> 122
<NAME> JANUS ASPEN EQUITY INC. PORT. RET.
<MULTIPLIER> "1,000 "
<CURRENCY> U.S. DOLLARS
<S> <C>
<PERIOD-TYPE> YEAR
<FISCAL-YEAR-END> DEC-31-1997
<PERIOD-START> MAY-01-1997
<PERIOD-END> DEC-31-1997
<EXCHANGE-RATE> 1.000
<INVESTMENTS-AT-COST> "2,947 "
<INVESTMENTS-AT-VALUE> "3,027 "
<RECEIVABLES> 74
<ASSETS-OTHER> 74
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> "3,175 "
<PAYABLE-FOR-SECURITIES> 107
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 8
<TOTAL-LIABILITIES> 115
<SENIOR-EQUITY> 0
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<ACCUMULATED-NII-CURRENT> 1
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<ACCUMULATED-NET-GAINS> 71
<OVERDISTRIBUTION-GAINS> 0
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<NET-ASSETS> 13
<DIVIDEND-INCOME> 7
<INTEREST-INCOME> 5
<OTHER-INCOME> 0
<EXPENSES-NET> 9
<NET-INVESTMENT-INCOME> 3
<REALIZED-GAINS-CURRENT> 71
<APPREC-INCREASE-CURRENT> 80
<NET-CHANGE-FROM-OPS> 154
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (2)
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 1
<NUMBER-OF-SHARES-REDEEMED> 0
<SHARES-REINVESTED> 0
<NET-CHANGE-IN-ASSETS> "3,060 "
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 0
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 6
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 43
<AVERAGE-NET-ASSETS> 12
<PER-SHARE-NAV-BEGIN> 10.000
<PER-SHARE-NII> 0.010
<PER-SHARE-GAIN-APPREC> 3.410
<PER-SHARE-DIVIDEND> 0.000
<PER-SHARE-DISTRIBUTIONS> 0.000
<RETURNS-OF-CAPITAL> 0.000
<PER-SHARE-NAV-END> 13.420
<EXPENSE-RATIO> 1.740
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0.000
</TABLE>
