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074 K001100 0
074 L001100 15
074 M001100 0
074 N001100 5806
074 O001100 8
074 P001100 3
074 Q001100 0
074 R011100 0
074 R021100 0
074 R031100 0
074 R041100 6
074 S001100 0
074 T001100 5789
074 U011100 354
074 U021100 1
074 V011100 16.29
074 V021100 16.21
074 W001100 0.0000
074 X001100 2
074 Y001100 0
<PAGE> PAGE 41
075 A001100 0
075 B001100 4788
076 001100 0.00
024 001200 Y
025 A001201 CHARLES SCHWAB CORP.
025 B001201 94-1737782
025 C001201 E
025 D001201 16
025 A001202 MERRILL LYNCH, PIERCE, FENNER & SMITH
025 B001202 13-5674085
025 C001202 E
025 D001202 7
025 A001203 MORGAN STANLEY DEAN WITTER CO.
025 B001203 13-2655998
025 C001203 E
025 D001203 29
025 D001204 0
025 D001205 0
025 D001206 0
025 D001207 0
025 D001208 0
028 A011200 0
028 A021200 0
028 A031200 0
028 A041200 0
028 B011200 0
028 B021200 0
028 B031200 0
028 B041200 0
028 C011200 0
028 C021200 0
028 C031200 0
028 C041200 0
028 D011200 0
028 D021200 0
028 D031200 0
028 D041200 0
028 E011200 1194
028 E021200 0
028 E031200 0
028 E041200 6
028 F011200 496
028 F021200 0
028 F031200 0
028 F041200 65
028 G011200 1690
028 G021200 0
028 G031200 0
028 G041200 71
028 H001200 0
045 001200 Y
<PAGE> PAGE 42
046 001200 N
047 001200 N
048 001200 0.000
048 A011200 0
048 A021200 0.000
048 B011200 0
048 B021200 0.000
048 C011200 0
048 C021200 0.000
048 D011200 0
048 D021200 0.000
048 E011200 0
048 E021200 0.000
048 F011200 0
048 F021200 0.000
048 G011200 0
048 G021200 0.000
048 H011200 0
048 H021200 0.000
048 I011200 0
048 I021200 0.000
048 J011200 0
048 J021200 0.000
048 K011200 0
048 K021200 0.000
049 001200 N
050 001200 N
051 001200 N
052 001200 Y
053 A001200 Y
053 B001200 Y
053 C001200 N
058 A001200 N
059 001200 Y
060 A001200 Y
060 B001200 Y
061 001200 500
062 A001200 N
062 B001200 0.0
062 C001200 0.0
062 D001200 0.0
062 E001200 0.0
062 F001200 0.0
062 G001200 0.0
062 H001200 0.0
062 I001200 0.0
062 J001200 0.0
062 K001200 0.0
062 L001200 0.0
062 M001200 0.0
062 N001200 0.0
<PAGE> PAGE 43
062 O001200 0.0
062 P001200 0.0
062 Q001200 0.0
062 R001200 0.0
063 A001200 0
063 B001200 0.0
066 A001200 Y
066 E001200 Y
067 001200 N
068 A001200 N
068 B001200 N
069 001200 N
070 A011200 Y
070 A021200 N
070 B011200 Y
070 B021200 N
070 C011200 Y
070 C021200 N
070 D011200 Y
070 D021200 N
070 E011200 Y
070 E021200 N
070 F011200 Y
070 F021200 N
070 G011200 Y
070 G021200 N
070 H011200 Y
070 H021200 N
070 I011200 Y
070 I021200 N
070 J011200 Y
070 J021200 Y
070 K011200 Y
070 K021200 N
070 L011200 Y
070 L021200 Y
070 M011200 Y
070 M021200 Y
070 N011200 Y
070 N021200 N
070 O011200 Y
070 O021200 N
070 P011200 N
070 P021200 N
070 Q011200 N
070 Q021200 N
070 R011200 Y
070 R021200 N
071 A001200 1735
071 B001200 256
071 C001200 1279
<PAGE> PAGE 44
071 D001200 20
072 A001200 2
072 B001200 2
072 C001200 1
072 D001200 0
072 E001200 0
072 F001200 1
072 G001200 0
072 H001200 0
072 I001200 1
072 J001200 5
072 K001200 0
072 L001200 0
072 M001200 0
072 N001200 0
072 O001200 0
072 P001200 0
072 Q001200 0
072 R001200 1
072 S001200 0
072 T001200 0
072 U001200 0
072 V001200 0
072 W001200 2
072 X001200 10
072 Y001200 8
072 Z001200 1
072AA001200 4
072BB001200 0
072CC011200 78
072CC021200 0
072DD011200 0
072DD021200 0
072EE001200 0
073 A011200 0.0000
073 A021200 0.0000
073 B001200 0.0000
073 C001200 0.0000
074 A001200 2
074 B001200 0
074 C001200 200
074 D001200 24
074 E001200 101
074 F001200 1436
074 G001200 0
074 H001200 0
074 I001200 0
074 J001200 1
074 K001200 0
074 L001200 36
074 M001200 6
<PAGE> PAGE 45
074 N001200 1806
074 O001200 100
074 P001200 1
074 Q001200 0
074 R011200 0
074 R021200 0
074 R031200 0
074 R041200 3
074 S001200 0
074 T001200 1702
074 U011200 160
074 U021200 1
074 V011200 10.56
074 V021200 10.55
074 W001200 0.0000
074 X001200 3
074 Y001200 0
075 A001200 0
075 B001200 1043
076 001200 0.00
SIGNATURE ANITA E. FALICIA
TITLE ASST. TREASURER
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
[DESCRIPTION] FDS JANUS ASPEN GROWTH PORT. INST.
<ARTICLE> 6
<LEGEND>
This schedule contains summary financial information extracted from financial
statements dated June 30, 1998 included in the Portfolio's Semiannual 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-31-1998
<PERIOD-START> JAN-01-1998
<PERIOD-END> JUN-30-1998
<EXCHANGE-RATE> 1.000
<INVESTMENTS-AT-COST> 655,819
<INVESTMENTS-AT-VALUE> 836,409
<RECEIVABLES> 2,385
<ASSETS-OTHER> 159
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 838,953
<PAYABLE-FOR-SECURITIES> 8,991
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 1,254
<TOTAL-LIABILITIES> 10,245
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 631,615
<SHARES-COMMON-STOCK> 40,040
<SHARES-COMMON-PRIOR> 32,921
<ACCUMULATED-NII-CURRENT> 296
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 16,227
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 180,570
<NET-ASSETS> 828,694
<DIVIDEND-INCOME> 2,276
<INTEREST-INCOME> 1,823
<OTHER-INCOME> 0
<EXPENSES-NET> 2,419
<NET-INVESTMENT-INCOME> 1,680
<REALIZED-GAINS-CURRENT> 16,930
<APPREC-INCREASE-CURRENT> 106,146
<NET-CHANGE-FROM-OPS> 124,756
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (1,501)
<DISTRIBUTIONS-OF-GAINS> (48,597)
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 6,832
<NUMBER-OF-SHARES-REDEEMED> (2,134)
<SHARES-REINVESTED> 2,421
<NET-CHANGE-IN-ASSETS> 220,415
<ACCUMULATED-NII-PRIOR> 117
<ACCUMULATED-GAINS-PRIOR> 47,894
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 2,317
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 2,422
<AVERAGE-NET-ASSETS> 717,087
<PER-SHARE-NAV-BEGIN> 18.480
<PER-SHARE-NII> 0.040
<PER-SHARE-GAIN-APPREC> 3.520
<PER-SHARE-DIVIDEND> (0.040)
<PER-SHARE-DISTRIBUTIONS> (1.300)
<RETURNS-OF-CAPITAL> 0.000
<PER-SHARE-NAV-END> 20.70
<EXPENSE-RATIO> 0.68
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This schedule contains summary financial information extracted from financial
statements dated June 30, 1998 included in the Portfolio's Semiannual 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-31-1998
<PERIOD-START> JAN-01-1998
<PERIOD-END> JUN-30-1998
<EXCHANGE-RATE> 1.000
<INVESTMENTS-AT-COST> 473,108
<INVESTMENTS-AT-VALUE> 636,295
<RECEIVABLES> 955
<ASSETS-OTHER> 119
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 637,369
<PAYABLE-FOR-SECURITIES> 11,355
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 1,565
<TOTAL-LIABILITIES> 12,920
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 431,230
<SHARES-COMMON-STOCK> 25,905
<SHARES-COMMON-PRIOR> 24,727
<ACCUMULATED-NII-CURRENT> (1,075)
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 31,514
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 162,780
<NET-ASSETS> 624,434
<DIVIDEND-INCOME> 683
<INTEREST-INCOME> 303
<OTHER-INCOME> 0
<EXPENSES-NET> 2,061
<NET-INVESTMENT-INCOME> (1,075)
<REALIZED-GAINS-CURRENT> 41,508
<APPREC-INCREASE-CURRENT> 49,112
<NET-CHANGE-FROM-OPS> 89,545
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 0
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 5,006
<NUMBER-OF-SHARES-REDEEMED> (3,828)
<SHARES-REINVESTED> 0
<NET-CHANGE-IN-ASSETS> 116,238
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> (9,994)
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 1,971
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 2,076
<AVERAGE-NET-ASSETS> 552,049
<PER-SHARE-NAV-BEGIN> 20.55
<PER-SHARE-NII> (0.04)
<PER-SHARE-GAIN-APPREC> 3.59
<PER-SHARE-DIVIDEND> 0
<PER-SHARE-DISTRIBUTIONS> 0
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 24.10
<EXPENSE-RATIO> 0.76
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This schedule contains summary financial information extracted from financial
statements dated June 30, 1998 included in the Portfolio's Semi-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-31-1998
<PERIOD-START> JAN-01-1998
<PERIOD-END> JUN-30-1998
<EXCHANGE-RATE> 1.00
<INVESTMENTS-AT-COST> 1,925,968
<INVESTMENTS-AT-VALUE> 2,524,897
<RECEIVABLES> 40,020
<ASSETS-OTHER> 2,238
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 2,567,155
<PAYABLE-FOR-SECURITIES> 164,877
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 9,310
<TOTAL-LIABILITIES> 174,187
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 1,765,993
<SHARES-COMMON-STOCK> 83,328
<SHARES-COMMON-PRIOR> 67,406
<ACCUMULATED-NII-CURRENT> 723
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 26,214
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 600,038
<NET-ASSETS> 2,391,846
<DIVIDEND-INCOME> 15,022
<INTEREST-INCOME> 2,514
<OTHER-INCOME> 0
<EXPENSES-NET> 7,109
<NET-INVESTMENT-INCOME> 10,427
<REALIZED-GAINS-CURRENT> 52,283
<APPREC-INCREASE-CURRENT> 395,879
<NET-CHANGE-FROM-OPS> 458,589
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (11,261)
<DISTRIBUTIONS-OF-GAINS> (69,710)
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 18,017
<NUMBER-OF-SHARES-REDEEMED> (4,924)
<SHARES-REINVESTED> 2,829
<NET-CHANGE-IN-ASSETS> 816,017
<ACCUMULATED-NII-PRIOR> 1,556
<ACCUMULATED-GAINS-PRIOR> 43,642
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 6,406
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 7,117
<AVERAGE-NET-ASSETS> 1,979,002
<PER-SHARE-NAV-BEGIN> 23.39
<PER-SHARE-NII> 0.13
<PER-SHARE-GAIN-APPREC> 6.19
<PER-SHARE-DIVIDEND> (0.14)
<PER-SHARE-DISTRIBUTIONS> (0.87)
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 28.70
<EXPENSE-RATIO> 0.73
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This schedule contains summary financial information extracted from financial
statements dated June 30, 1998 included in the Portfolio's Semiannual 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-31-1998
<PERIOD-START> JAN-01-1998
<PERIOD-END> JUN-30-1998
<EXCHANGE-RATE> 1.000
<INVESTMENTS-AT-COST> 484,221
<INVESTMENTS-AT-VALUE> 563,315
<RECEIVABLES> 4,965
<ASSETS-OTHER> 87
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 568,367
<PAYABLE-FOR-SECURITIES> 6,788
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 545
<TOTAL-LIABILITIES> 7,333
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 471,851
<SHARES-COMMON-STOCK> 28,191
<SHARES-COMMON-PRIOR> 20,751
<ACCUMULATED-NII-CURRENT> 1,667
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 8,423
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 79,093
<NET-ASSETS> 561,020
<DIVIDEND-INCOME> 1,761
<INTEREST-INCOME> 5,018
<OTHER-INCOME> 0
<EXPENSES-NET> 1,699
<NET-INVESTMENT-INCOME> 5,080
<REALIZED-GAINS-CURRENT> 8,422
<APPREC-INCREASE-CURRENT> 58,751
<NET-CHANGE-FROM-OPS> 72,253
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (3,541)
<DISTRIBUTIONS-OF-GAINS> (13,227)
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 7,493
<NUMBER-OF-SHARES-REDEEMED> (900)
<SHARES-REINVESTED> 847
<NET-CHANGE-IN-ASSETS> 198,613
<ACCUMULATED-NII-PRIOR> 129
<ACCUMULATED-GAINS-PRIOR> 13,228
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 1,649
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 1,709
<AVERAGE-NET-ASSETS> 452,881
<PER-SHARE-NAV-BEGIN> 17.47
<PER-SHARE-NII> 0.18
<PER-SHARE-GAIN-APPREC> 2.88
<PER-SHARE-DIVIDEND> (0.13)
<PER-SHARE-DISTRIBUTIONS> (0.49)
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 19.91
<EXPENSE-RATIO> 0.76
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This schedule contains summary financial information extracted from financial
statements dated June 30, 1998 included in the Portfolio's Semiannual 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-31-1998
<PERIOD-START> JAN-01-1998
<PERIOD-END> JUN-30-1998
<EXCHANGE-RATE> 1.000
<INVESTMENTS-AT-COST> 79,126
<INVESTMENTS-AT-VALUE> 80,770
<RECEIVABLES> 2,874
<ASSETS-OTHER> 64
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 83,708
<PAYABLE-FOR-SECURITIES> 530
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 204
<TOTAL-LIABILITIES> 734
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 79,998
<SHARES-COMMON-STOCK> 6,939
<SHARES-COMMON-PRIOR> 4,593
<ACCUMULATED-NII-CURRENT> 38
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 1,293
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 1,645
<NET-ASSETS> 82,962
<DIVIDEND-INCOME> 23
<INTEREST-INCOME> 2,518
<OTHER-INCOME> 0
<EXPENSES-NET> 247
<NET-INVESTMENT-INCOME> 2,294
<REALIZED-GAINS-CURRENT> 1,325
<APPREC-INCREASE-CURRENT> (54)
<NET-CHANGE-FROM-OPS> 3,565
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (2,464)
<DISTRIBUTIONS-OF-GAINS> (704)
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 2,606
<NUMBER-OF-SHARES-REDEEMED> (525)
<SHARES-REINVESTED> 265
<NET-CHANGE-IN-ASSETS> 28,865
<ACCUMULATED-NII-PRIOR> 208
<ACCUMULATED-GAINS-PRIOR> 672
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 220
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 249
<AVERAGE-NET-ASSETS> 68,129
<PER-SHARE-NAV-BEGIN> 11.780
<PER-SHARE-NII> 0.330
<PER-SHARE-GAIN-APPREC> 0.330
<PER-SHARE-DIVIDEND> (0.370)
<PER-SHARE-DISTRIBUTIONS> (0.110)
<RETURNS-OF-CAPITAL> 0.000
<PER-SHARE-NAV-END> 11.960
<EXPENSE-RATIO> 0.740
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0.000
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This schedule contains summary financial information extracted from financial
statements dated June 30, 1998 included in the Portfolio's Semi-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-31-1998
<PERIOD-START> JAN-01-1998
<PERIOD-END> JUN-30-1998
<EXCHANGE-RATE> 1.000
<INVESTMENTS-AT-COST> 4,220
<INVESTMENTS-AT-VALUE> 4,225
<RECEIVABLES> 88
<ASSETS-OTHER> 2
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 4,315
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 12
<TOTAL-LIABILITIES> 12
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 4,288
<SHARES-COMMON-STOCK> 491
<SHARES-COMMON-PRIOR> 308
<ACCUMULATED-NII-CURRENT> 1
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 9
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 5
<NET-ASSETS> 4,292
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 112
<OTHER-INCOME> 0
<EXPENSES-NET> 12
<NET-INVESTMENT-INCOME> 100
<REALIZED-GAINS-CURRENT> 8
<APPREC-INCREASE-CURRENT> (8)
<NET-CHANGE-FROM-OPS> 100
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (138)
<DISTRIBUTIONS-OF-GAINS> (46)
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 296
<NUMBER-OF-SHARES-REDEEMED> (134)
<SHARES-REINVESTED> 21
<NET-CHANGE-IN-ASSETS> 1,558
<ACCUMULATED-NII-PRIOR> 39
<ACCUMULATED-GAINS-PRIOR> 47
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 12
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 25
<AVERAGE-NET-ASSETS> 3,731
<PER-SHARE-NAV-BEGIN> 8.88
<PER-SHARE-NII> 0.20
<PER-SHARE-GAIN-APPREC> 0.05
<PER-SHARE-DIVIDEND> (0.29)
<PER-SHARE-DISTRIBUTIONS> (0.10)
<RETURNS-OF-CAPITAL> 0.00
<PER-SHARE-NAV-END> 8.74
<EXPENSE-RATIO> 0.65
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This schedule contains summary financial information extracted from financial
statements dated June 30, 1998 included in the Portfolio's Semiannual 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-31-1998
<PERIOD-START> JAN-01-1998
<PERIOD-END> JUN-30-1998
<EXCHANGE-RATE> 1.000
<INVESTMENTS-AT-COST> 218,842
<INVESTMENTS-AT-VALUE> 265,961
<RECEIVABLES> 4,121
<ASSETS-OTHER> 178
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 270,260
<PAYABLE-FOR-SECURITIES> 14,050
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 322
<TOTAL-LIABILITIES> 14,372
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 209,167
<SHARES-COMMON-STOCK> 11,528
<SHARES-COMMON-PRIOR> 8,716
<ACCUMULATED-NII-CURRENT> 78
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> (626)
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 47,269
<NET-ASSETS> 255,875
<DIVIDEND-INCOME> 1,790
<INTEREST-INCOME> 425
<OTHER-INCOME> 0
<EXPENSES-NET> 863
<NET-INVESTMENT-INCOME> 1,352
<REALIZED-GAINS-CURRENT> 2,676
<APPREC-INCREASE-CURRENT> 35,179
<NET-CHANGE-FROM-OPS> 39,207
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (1,353)
<DISTRIBUTIONS-OF-GAINS> (3,097)
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 6,370
<NUMBER-OF-SHARES-REDEEMED> (3,759)
<SHARES-REINVESTED> 201
<NET-CHANGE-IN-ASSETS> 94,786
<ACCUMULATED-NII-PRIOR> 80
<ACCUMULATED-GAINS-PRIOR> (206)
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 657
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 864
<AVERAGE-NET-ASSETS> 200,476
<PER-SHARE-NAV-BEGIN> 18.480
<PER-SHARE-NII> 0.120
<PER-SHARE-GAIN-APPREC> 3.990
<PER-SHARE-DIVIDEND> (0.120)
<PER-SHARE-DISTRIBUTIONS> (0.270)
<RETURNS-OF-CAPITAL> 0.000
<PER-SHARE-NAV-END> 22.200
<EXPENSE-RATIO> 0.870
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This schedule contains summary financial information extracted from financial
statements dated June 30, 1998 included in the Portfolio's Semiannual 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-31-1998
<PERIOD-START> JAN-01-1998
<PERIOD-END> JUN-30-1998
<EXCHANGE-RATE> 1.000
<INVESTMENTS-AT-COST> 27,903
<INVESTMENTS-AT-VALUE> 27,903
<RECEIVABLES> 210
<ASSETS-OTHER> 0
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 28,113
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 2,036
<TOTAL-LIABILITIES> 2,036
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 26,077
<SHARES-COMMON-STOCK> 26,066
<SHARES-COMMON-PRIOR> 15,374
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 0
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 0
<NET-ASSETS> 26,066
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 729
<OTHER-INCOME> 0
<EXPENSES-NET> 46
<NET-INVESTMENT-INCOME> 683
<REALIZED-GAINS-CURRENT> 0
<APPREC-INCREASE-CURRENT> 0
<NET-CHANGE-FROM-OPS> 683
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (683)
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 83,537
<NUMBER-OF-SHARES-REDEEMED> (73,528)
<SHARES-REINVESTED> 683
<NET-CHANGE-IN-ASSETS> 10,693
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 0
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 32
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 46
<AVERAGE-NET-ASSETS> 25,881
<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> 0.360
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This schedule contains summary financial information extracted from financial
statements dated June 30, 1998 included in the Portfolio's Semi-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-31-1998
<PERIOD-START> JAN-01-1998
<PERIOD-END> JUN-30-1998
<EXCHANGE-RATE> 1.00
<INVESTMENTS-AT-COST> 3,858
<INVESTMENTS-AT-VALUE> 3,909
<RECEIVABLES> 148
<ASSETS-OTHER> 21
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 4,078
<PAYABLE-FOR-SECURITIES> 144
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 31
<TOTAL-LIABILITIES> 175
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 3,752
<SHARES-COMMON-STOCK> 328
<SHARES-COMMON-PRIOR> 247
<ACCUMULATED-NII-CURRENT> 4
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 97
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 50
<NET-ASSETS> 3,891
<DIVIDEND-INCOME> 3
<INTEREST-INCOME> 161
<OTHER-INCOME> 0
<EXPENSES-NET> 19
<NET-INVESTMENT-INCOME> 145
<REALIZED-GAINS-CURRENT> 97
<APPREC-INCREASE-CURRENT> (14)
<NET-CHANGE-FROM-OPS> 228
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (152)
<DISTRIBUTIONS-OF-GAINS> (66)
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 230
<NUMBER-OF-SHARES-REDEEMED> (167)
<SHARES-REINVESTED> 18
<NET-CHANGE-IN-ASSETS> 978
<ACCUMULATED-NII-PRIOR> 12
<ACCUMULATED-GAINS-PRIOR> 66
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 14
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 40
<AVERAGE-NET-ASSETS> 3,769
<PER-SHARE-NAV-BEGIN> 11.78
<PER-SHARE-NII> 0.44
<PER-SHARE-GAIN-APPREC> 0.35
<PER-SHARE-DIVIDEND> (0.49)
<PER-SHARE-DISTRIBUTIONS> (0.21)
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 11.87
<EXPENSE-RATIO> 1.01
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This schedule contains summary financial information extracted from financial
statements dated June 30, 1998 included in the Portfolio's Semi-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-31-1998
<PERIOD-START> JAN-01-1998
<PERIOD-END> JUN-30-1998
<EXCHANGE-RATE> 1.000
<INVESTMENTS-AT-COST> 18,518
<INVESTMENTS-AT-VALUE> 22,984
<RECEIVABLES> 1,061
<ASSETS-OTHER> 38
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 24,083
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 19
<TOTAL-LIABILITIES> 19
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 20,115
<SHARES-COMMON-STOCK> 1,454
<SHARES-COMMON-PRIOR> 541
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> (517)
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 4,466
<NET-ASSETS> 24,047
<DIVIDEND-INCOME> 31
<INTEREST-INCOME> 41
<OTHER-INCOME> 0
<EXPENSES-NET> 72
<NET-INVESTMENT-INCOME> 0
<REALIZED-GAINS-CURRENT> (371)
<APPREC-INCREASE-CURRENT> 4,201
<NET-CHANGE-FROM-OPS> 3,830
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (4)
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 1,546
<NUMBER-OF-SHARES-REDEEMED> (633)
<SHARES-REINVESTED> 0
<NET-CHANGE-IN-ASSETS> 17,218
<ACCUMULATED-NII-PRIOR> 4
<ACCUMULATED-GAINS-PRIOR> (146)
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 49
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 72
<AVERAGE-NET-ASSETS> 14,035
<PER-SHARE-NAV-BEGIN> 12.62
<PER-SHARE-NII> 0.00
<PER-SHARE-GAIN-APPREC> 3.92
<PER-SHARE-DIVIDEND> 0.00
<PER-SHARE-DISTRIBUTIONS> 0.00
<RETURNS-OF-CAPITAL> 0.00
<PER-SHARE-NAV-END> 16.54
<EXPENSE-RATIO> 1.03
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This schedule contains summary financial information extracted from financial
statements dated June 30, 1998 included in the Portfolio's Semiannual 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-31-1998
<PERIOD-START> JAN-01-1998
<PERIOD-END> JUN-30-1998
<EXCHANGE-RATE> 1.000
<INVESTMENTS-AT-COST> 4,824
<INVESTMENTS-AT-VALUE> 5,761
<RECEIVABLES> 16
<ASSETS-OTHER> 29
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 5,806
<PAYABLE-FOR-SECURITIES> 8
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 9
<TOTAL-LIABILITIES> 17
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 4,796
<SHARES-COMMON-STOCK> 354
<SHARES-COMMON-PRIOR> 226
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 56
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 937
<NET-ASSETS> 5,772
<DIVIDEND-INCOME> 27
<INTEREST-INCOME> 3
<OTHER-INCOME> 0
<EXPENSES-NET> 30
<NET-INVESTMENT-INCOME> 0
<REALIZED-GAINS-CURRENT> 58
<APPREC-INCREASE-CURRENT> 858
<NET-CHANGE-FROM-OPS> 916
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 0
<DISTRIBUTIONS-OF-GAINS> (74)
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 221
<NUMBER-OF-SHARES-REDEEMED> (98)
<SHARES-REINVESTED> 5
<NET-CHANGE-IN-ASSETS> 2,729
<ACCUMULATED-NII-PRIOR> 1
<ACCUMULATED-GAINS-PRIOR> 71
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 18
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 39
<AVERAGE-NET-ASSETS> 4,773
<PER-SHARE-NAV-BEGIN> 13.460
<PER-SHARE-NII> 0.000
<PER-SHARE-GAIN-APPREC> 3.040
<PER-SHARE-DIVIDEND> 0.000
<PER-SHARE-DISTRIBUTIONS> (0.210)
<RETURNS-OF-CAPITAL> 0.000
<PER-SHARE-NAV-END> 16.290
<EXPENSE-RATIO> 1.250
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0.000
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This schedule contains summary financial information extracted from financial
statements dated June 30, 1998 included in the Portfolio's Semi-Annual Report
and is qualified in its entirety by reference to such financial statements.
</LEGEND>
<SERIES>
<NUMBER> 131
<NAME> JANUS ASPEN GROWTH AND INC. PORT. INST.
<MULTIPLIER> 1,000
<CURRENCY> U.S. DOLLARS
<S> <C>
<PERIOD-TYPE> YEAR
<FISCAL-YEAR-END> DEC-31-1998
<PERIOD-START> MAY-01-1998
<PERIOD-END> JUN-30-1998
<EXCHANGE-RATE> 1.000
<INVESTMENTS-AT-COST> 1,683
<INVESTMENTS-AT-VALUE> 1,761
<RECEIVABLES> 37
<ASSETS-OTHER> 8
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 1,806
<PAYABLE-FOR-SECURITIES> 100
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 4
<TOTAL-LIABILITIES> 104
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 1,619
<SHARES-COMMON-STOCK> 160
<SHARES-COMMON-PRIOR> 0
<ACCUMULATED-NII-CURRENT> 1
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 4
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 78
<NET-ASSETS> 1,691
<DIVIDEND-INCOME> 1
<INTEREST-INCOME> 2
<OTHER-INCOME> 0
<EXPENSES-NET> 2
<NET-INVESTMENT-INCOME> 1
<REALIZED-GAINS-CURRENT> 4
<APPREC-INCREASE-CURRENT> 78
<NET-CHANGE-FROM-OPS> 83
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 0
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 167
<NUMBER-OF-SHARES-REDEEMED> (7)
<SHARES-REINVESTED> 0
<NET-CHANGE-IN-ASSETS> 1,702
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 0
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 1
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 10
<AVERAGE-NET-ASSETS> 1,033
<PER-SHARE-NAV-BEGIN> 10.00
<PER-SHARE-NII> 0.01
<PER-SHARE-GAIN-APPREC> 0.55
<PER-SHARE-DIVIDEND> 0
<PER-SHARE-DISTRIBUTIONS> 0
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 10.56
<EXPENSE-RATIO> 1.25
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This schedule contains summary financial information extracted from financial
statements dated June 30, 1998 included in the Portfolio's Semiannual 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-31-1998
<PERIOD-START> JAN-01-1998
<PERIOD-END> JUN-30-1998
<EXCHANGE-RATE> 1.000
<INVESTMENTS-AT-COST> 655,819
<INVESTMENTS-AT-VALUE> 836,409
<RECEIVABLES> 2,385
<ASSETS-OTHER> 159
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 838,953
<PAYABLE-FOR-SECURITIES> 8,991
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 1,254
<TOTAL-LIABILITIES> 10,245
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 631,615
<SHARES-COMMON-STOCK> 1
<SHARES-COMMON-PRIOR> 1
<ACCUMULATED-NII-CURRENT> 296
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 16,227
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 180,570
<NET-ASSETS> 14
<DIVIDEND-INCOME> 2,276
<INTEREST-INCOME> 1,823
<OTHER-INCOME> 0
<EXPENSES-NET> 2,419
<NET-INVESTMENT-INCOME> 1,680
<REALIZED-GAINS-CURRENT> 16,930
<APPREC-INCREASE-CURRENT> 106,146
<NET-CHANGE-FROM-OPS> 124,756
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (1,501)
<DISTRIBUTIONS-OF-GAINS> (48,597)
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 0
<NUMBER-OF-SHARES-REDEEMED> 0
<SHARES-REINVESTED> 0
<NET-CHANGE-IN-ASSETS> 220,415
<ACCUMULATED-NII-PRIOR> 117
<ACCUMULATED-GAINS-PRIOR> 47,894
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 2,317
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 2,422
<AVERAGE-NET-ASSETS> 13
<PER-SHARE-NAV-BEGIN> 18.460
<PER-SHARE-NII> 0.000
<PER-SHARE-GAIN-APPREC> 3.500
<PER-SHARE-DIVIDEND> 0.000
<PER-SHARE-DISTRIBUTIONS> (1.300)
<RETURNS-OF-CAPITAL> 0.000
<PER-SHARE-NAV-END> 20.660
<EXPENSE-RATIO> 1.170
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0.000
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This schedule contains summary financial information extracted from financial
statements dated June 30, 1998 included in the Portfolio's Semiannual 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-31-1998
<PERIOD-START> JAN-01-1998
<PERIOD-END> JUN-30-1998
<EXCHANGE-RATE> 1.000
<INVESTMENTS-AT-COST> 473,108
<INVESTMENTS-AT-VALUE> 636,295
<RECEIVABLES> 955
<ASSETS-OTHER> 119
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 637,369
<PAYABLE-FOR-SECURITIES> 11,355
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 1,565
<TOTAL-LIABILITIES> 12,920
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 431,230
<SHARES-COMMON-STOCK> 1
<SHARES-COMMON-PRIOR> 1
<ACCUMULATED-NII-CURRENT> (1,075)
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 31,514
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 162,780
<NET-ASSETS> 15
<DIVIDEND-INCOME> 683
<INTEREST-INCOME> 303
<OTHER-INCOME> 0
<EXPENSES-NET> 2,061
<NET-INVESTMENT-INCOME> (1,075)
<REALIZED-GAINS-CURRENT> 41,508
<APPREC-INCREASE-CURRENT> 49,112
<NET-CHANGE-FROM-OPS> 89,545
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 0
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 0
<NUMBER-OF-SHARES-REDEEMED> 0
<SHARES-REINVESTED> 0
<NET-CHANGE-IN-ASSETS> 116,238
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> (9,994)
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 1,971
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 2,076
<AVERAGE-NET-ASSETS> 14
<PER-SHARE-NAV-BEGIN> 20.49
<PER-SHARE-NII> (0.10)
<PER-SHARE-GAIN-APPREC> 3.58
<PER-SHARE-DIVIDEND> 0.00
<PER-SHARE-DISTRIBUTIONS> 0.00
<RETURNS-OF-CAPITAL> 0.00
<PER-SHARE-NAV-END> 23.97
<EXPENSE-RATIO> 1.26
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This schedule contains summary financial information extracted from financial
statements dated June 30, 1998 included in the Portfolio's Semiannual 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-31-1998
<PERIOD-START> JAN-01-1998
<PERIOD-END> JUN-30-1998
<EXCHANGE-RATE> 1.00
<INVESTMENTS-AT-COST> 1,925,968
<INVESTMENTS-AT-VALUE> 2,524,897
<RECEIVABLES> 40,020
<ASSETS-OTHER> 2,238
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 2,567,155
<PAYABLE-FOR-SECURITIES> 164,877
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 9,310
<TOTAL-LIABILITIES> 174,187
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 1,765,993
<SHARES-COMMON-STOCK> 39,061
<SHARES-COMMON-PRIOR> 17,251
<ACCUMULATED-NII-CURRENT> 723
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 26,214
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 600,038
<NET-ASSETS> 1,122
<DIVIDEND-INCOME> 15,022
<INTEREST-INCOME> 2,514
<OTHER-INCOME> 0
<EXPENSES-NET> 7,109
<NET-INVESTMENT-INCOME> 10,427
<REALIZED-GAINS-CURRENT> 52,283
<APPREC-INCREASE-CURRENT> 395,879
<NET-CHANGE-FROM-OPS> 458,589
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (11,261)
<DISTRIBUTIONS-OF-GAINS> (69,710)
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 21,111
<NUMBER-OF-SHARES-REDEEMED> (489)
<SHARES-REINVESTED> 1,188
<NET-CHANGE-IN-ASSETS> 816,017
<ACCUMULATED-NII-PRIOR> 1,556
<ACCUMULATED-GAINS-PRIOR> 43,642
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 6,406
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 7,117
<AVERAGE-NET-ASSETS> 640
<PER-SHARE-NAV-BEGIN> 23.36
<PER-SHARE-NII> 0.06
<PER-SHARE-GAIN-APPREC> 6.18
<PER-SHARE-DIVIDEND> (0.02)
<PER-SHARE-DISTRIBUTIONS> (0.87)
<RETURNS-OF-CAPITAL> 0.00
<PER-SHARE-NAV-END> 28.71
<EXPENSE-RATIO> 1.25
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This schedule contains summary financial information extracted from financial
statements dated June 30, 1998 included in the Portfolio's Semiannual 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-31-1998
<PERIOD-START> JAN-01-1998
<PERIOD-END> JUN-30-1998
<EXCHANGE-RATE> 1.00
<INVESTMENTS-AT-COST> 484,221
<INVESTMENTS-AT-VALUE> 563,315
<RECEIVABLES> 4,965
<ASSETS-OTHER> 87
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 568,367
<PAYABLE-FOR-SECURITIES> 6,788
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 545
<TOTAL-LIABILITIES> 7,333
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 471,851
<SHARES-COMMON-STOCK> 1
<SHARES-COMMON-PRIOR> 1
<ACCUMULATED-NII-CURRENT> 1,667
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 8,423
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 79,093
<NET-ASSETS> 14
<DIVIDEND-INCOME> 1,761
<INTEREST-INCOME> 5,018
<OTHER-INCOME> 0
<EXPENSES-NET> 1,699
<NET-INVESTMENT-INCOME> 5,080
<REALIZED-GAINS-CURRENT> 8,422
<APPREC-INCREASE-CURRENT> 58,751
<NET-CHANGE-FROM-OPS> 72,253
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (3,541)
<DISTRIBUTIONS-OF-GAINS> (13,227)
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 0
<NUMBER-OF-SHARES-REDEEMED> 0
<SHARES-REINVESTED> 0
<NET-CHANGE-IN-ASSETS> 198,613
<ACCUMULATED-NII-PRIOR> 129
<ACCUMULATED-GAINS-PRIOR> 13,228
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 1,649
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 1,709
<AVERAGE-NET-ASSETS> 13
<PER-SHARE-NAV-BEGIN> 17.47
<PER-SHARE-NII> 0.16
<PER-SHARE-GAIN-APPREC> 2.84
<PER-SHARE-DIVIDEND> (0.08)
<PER-SHARE-DISTRIBUTIONS> (0.49)
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 19.90
<EXPENSE-RATIO> 1.25
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This schedule contains summary financial information extracted from financial
statements dated June 30, 1998 included in the Portfolio's Semiannual 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-31-1998
<PERIOD-START> JAN-01-1998
<PERIOD-END> JUN-30-1998
<EXCHANGE-RATE> 1.000
<INVESTMENTS-AT-COST> 79,126
<INVESTMENTS-AT-VALUE> 80,770
<RECEIVABLES> 2,874
<ASSETS-OTHER> 64
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 83,708
<PAYABLE-FOR-SECURITIES> 530
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 204
<TOTAL-LIABILITIES> 734
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 79,998
<SHARES-COMMON-STOCK> 1
<SHARES-COMMON-PRIOR> 1
<ACCUMULATED-NII-CURRENT> 38
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 1,293
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 1,645
<NET-ASSETS> 12
<DIVIDEND-INCOME> 23
<INTEREST-INCOME> 2,518
<OTHER-INCOME> 0
<EXPENSES-NET> 247
<NET-INVESTMENT-INCOME> 2,294
<REALIZED-GAINS-CURRENT> 1,325
<APPREC-INCREASE-CURRENT> (54)
<NET-CHANGE-FROM-OPS> 3,565
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (2,464)
<DISTRIBUTIONS-OF-GAINS> (704)
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 0
<NUMBER-OF-SHARES-REDEEMED> 0
<SHARES-REINVESTED> 0
<NET-CHANGE-IN-ASSETS> 28,865
<ACCUMULATED-NII-PRIOR> 208
<ACCUMULATED-GAINS-PRIOR> 672
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 220
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 249
<AVERAGE-NET-ASSETS> 11
<PER-SHARE-NAV-BEGIN> 11.770
<PER-SHARE-NII> 0.380
<PER-SHARE-GAIN-APPREC> 0.250
<PER-SHARE-DIVIDEND> (0.330)
<PER-SHARE-DISTRIBUTIONS> (0.110)
<RETURNS-OF-CAPITAL> 0.000
<PER-SHARE-NAV-END> 11.960
<EXPENSE-RATIO> 1.250
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0.000
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This schedule contains summary financial information extracted from financial
statements dated June 30, 1998 included in the Portfolio's Semiannual 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-31-1998
<PERIOD-START> JAN-01-1998
<PERIOD-END> JUN-30-1998
<EXCHANGE-RATE> 1.000
<INVESTMENTS-AT-COST> 4,220
<INVESTMENTS-AT-VALUE> 4,225
<RECEIVABLES> 88
<ASSETS-OTHER> 2
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 4,315
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 12
<TOTAL-LIABILITIES> 12
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 4,288
<SHARES-COMMON-STOCK> 1
<SHARES-COMMON-PRIOR> 1
<ACCUMULATED-NII-CURRENT> 1
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 9
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 5
<NET-ASSETS> 11
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 112
<OTHER-INCOME> 0
<EXPENSES-NET> 12
<NET-INVESTMENT-INCOME> 100
<REALIZED-GAINS-CURRENT> 8
<APPREC-INCREASE-CURRENT> (8)
<NET-CHANGE-FROM-OPS> 100
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (138)
<DISTRIBUTIONS-OF-GAINS> (46)
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 0
<NUMBER-OF-SHARES-REDEEMED> 0
<SHARES-REINVESTED> 0
<NET-CHANGE-IN-ASSETS> 1,558
<ACCUMULATED-NII-PRIOR> 39
<ACCUMULATED-GAINS-PRIOR> 47
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 12
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 25
<AVERAGE-NET-ASSETS> 11
<PER-SHARE-NAV-BEGIN> 8.88
<PER-SHARE-NII> 0.21
<PER-SHARE-GAIN-APPREC> 0.02
<PER-SHARE-DIVIDEND> (0.26)
<PER-SHARE-DISTRIBUTIONS> (0.10)
<RETURNS-OF-CAPITAL> 0.00
<PER-SHARE-NAV-END> 8.75
<EXPENSE-RATIO> 1.13
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This schedule contains summary financial information extracted from financial
statements dated June 30, 1998 included in the Portfolio's Semiannual 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-31-1998
<PERIOD-START> JAN-01-1998
<PERIOD-END> JUN-30-1998
<EXCHANGE-RATE> 1.000
<INVESTMENTS-AT-COST> 218,842
<INVESTMENTS-AT-VALUE> 265,961
<RECEIVABLES> 4,121
<ASSETS-OTHER> 178
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 270,260
<PAYABLE-FOR-SECURITIES> 14,050
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 322
<TOTAL-LIABILITIES> 14,372
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 209,167
<SHARES-COMMON-STOCK> 1
<SHARES-COMMON-PRIOR> 1
<ACCUMULATED-NII-CURRENT> 78
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> (626)
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 47,269
<NET-ASSETS> 13
<DIVIDEND-INCOME> 1,790
<INTEREST-INCOME> 425
<OTHER-INCOME> 0
<EXPENSES-NET> 863
<NET-INVESTMENT-INCOME> 1,352
<REALIZED-GAINS-CURRENT> 2,676
<APPREC-INCREASE-CURRENT> 35,179
<NET-CHANGE-FROM-OPS> 39,207
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (1,353)
<DISTRIBUTIONS-OF-GAINS> (3,097)
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 0
<NUMBER-OF-SHARES-REDEEMED> 0
<SHARES-REINVESTED> 0
<NET-CHANGE-IN-ASSETS> 94,786
<ACCUMULATED-NII-PRIOR> 80
<ACCUMULATED-GAINS-PRIOR> (206)
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 657
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 864
<AVERAGE-NET-ASSETS> 12
<PER-SHARE-NAV-BEGIN> 18.440
<PER-SHARE-NII> 0.080
<PER-SHARE-GAIN-APPREC> 3.950
<PER-SHARE-DIVIDEND> (0.010)
<PER-SHARE-DISTRIBUTIONS> (0.270)
<RETURNS-OF-CAPITAL> 0.000
<PER-SHARE-NAV-END> 22.190
<EXPENSE-RATIO> 1.360
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0.000
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This schedule contains summary financial information extracted from financial
statements dated June 30, 1998 included in the Portfolio's Semiannual 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-31-1998
<PERIOD-START> JAN-01-1998
<PERIOD-END> JUN-30-1998
<EXCHANGE-RATE> 1.000
<INVESTMENTS-AT-COST> 27,903
<INVESTMENTS-AT-VALUE> 27,903
<RECEIVABLES> 210
<ASSETS-OTHER> 0
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 28,113
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 2,036
<TOTAL-LIABILITIES> 2,036
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 26,077
<SHARES-COMMON-STOCK> 11
<SHARES-COMMON-PRIOR> 10
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 0
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 0
<NET-ASSETS> 11
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 729
<OTHER-INCOME> 0
<EXPENSES-NET> 46
<NET-INVESTMENT-INCOME> 683
<REALIZED-GAINS-CURRENT> 0
<APPREC-INCREASE-CURRENT> 0
<NET-CHANGE-FROM-OPS> 683
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (683)
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 0
<NUMBER-OF-SHARES-REDEEMED> 0
<SHARES-REINVESTED> 0
<NET-CHANGE-IN-ASSETS> 10,693
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 0
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 32
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 46
<AVERAGE-NET-ASSETS> 10
<PER-SHARE-NAV-BEGIN> 1.000
<PER-SHARE-NII> 0.020
<PER-SHARE-GAIN-APPREC> 0.000
<PER-SHARE-DIVIDEND> (0.020)
<PER-SHARE-DISTRIBUTIONS> 0.000
<RETURNS-OF-CAPITAL> 0.000
<PER-SHARE-NAV-END> 1.000
<EXPENSE-RATIO> 0.850
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This schedule contains summary financial information extracted from financial
statements dated June 30, 1998 included in the Portfolio's Semiannual 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-31-1998
<PERIOD-START> JAN-01-1998
<PERIOD-END> JUN-30-1998
<EXCHANGE-RATE> 1.00
<INVESTMENTS-AT-COST> 3,858
<INVESTMENTS-AT-VALUE> 3,909
<RECEIVABLES> 148
<ASSETS-OTHER> 21
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 4,078
<PAYABLE-FOR-SECURITIES> 144
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 31
<TOTAL-LIABILITIES> 175
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 3,752
<SHARES-COMMON-STOCK> 1
<SHARES-COMMON-PRIOR> 1
<ACCUMULATED-NII-CURRENT> 4
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 97
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 50
<NET-ASSETS> 12
<DIVIDEND-INCOME> 3
<INTEREST-INCOME> 161
<OTHER-INCOME> 0
<EXPENSES-NET> 19
<NET-INVESTMENT-INCOME> 145
<REALIZED-GAINS-CURRENT> 97
<APPREC-INCREASE-CURRENT> (14)
<NET-CHANGE-FROM-OPS> 228
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (152)
<DISTRIBUTIONS-OF-GAINS> (66)
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 0
<NUMBER-OF-SHARES-REDEEMED> 0
<SHARES-REINVESTED> 0
<NET-CHANGE-IN-ASSETS> 978
<ACCUMULATED-NII-PRIOR> 12
<ACCUMULATED-GAINS-PRIOR> 66
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 14
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 40
<AVERAGE-NET-ASSETS> 12
<PER-SHARE-NAV-BEGIN> 11.78
<PER-SHARE-NII> 0.42
<PER-SHARE-GAIN-APPREC> 0.34
<PER-SHARE-DIVIDEND> (0.45)
<PER-SHARE-DISTRIBUTIONS> (0.21)
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 11.88
<EXPENSE-RATIO> 1.50
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This schedule contains summary financial information extracted from financial
statements dated June 30, 1998 included in the Portfolio's Semiannual 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-31-1998
<PERIOD-START> JAN-01-1998
<PERIOD-END> JUN-30-1998
<EXCHANGE-RATE> 1.000
<INVESTMENTS-AT-COST> 18,518
<INVESTMENTS-AT-VALUE> 22,984
<RECEIVABLES> 1,061
<ASSETS-OTHER> 38
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 24,083
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 19
<TOTAL-LIABILITIES> 19
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 20,115
<SHARES-COMMON-STOCK> 1
<SHARES-COMMON-PRIOR> 1
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> (517)
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 4,466
<NET-ASSETS> 17
<DIVIDEND-INCOME> 31
<INTEREST-INCOME> 41
<OTHER-INCOME> 0
<EXPENSES-NET> 72
<NET-INVESTMENT-INCOME> 0
<REALIZED-GAINS-CURRENT> (371)
<APPREC-INCREASE-CURRENT> 4,201
<NET-CHANGE-FROM-OPS> 3,830
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (4)
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 0
<NUMBER-OF-SHARES-REDEEMED> 0
<SHARES-REINVESTED> 0
<NET-CHANGE-IN-ASSETS> 17,218
<ACCUMULATED-NII-PRIOR> 4
<ACCUMULATED-GAINS-PRIOR> (146)
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 49
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 72
<AVERAGE-NET-ASSETS> 14
<PER-SHARE-NAV-BEGIN> 12.62
<PER-SHARE-NII> (0.03)
<PER-SHARE-GAIN-APPREC> 3.92
<PER-SHARE-DIVIDEND> 0.00
<PER-SHARE-DISTRIBUTIONS> 0.00
<RETURNS-OF-CAPITAL> 0.00
<PER-SHARE-NAV-END> 16.51
<EXPENSE-RATIO> 1.54
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This schedule contains summary financial information extracted from financial
statements dated June 30, 1998 included in the Portfolio's Semiannual 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-31-1998
<PERIOD-START> JAN-01-1998
<PERIOD-END> JUN-30-1998
<EXCHANGE-RATE> 1.000
<INVESTMENTS-AT-COST> 4,824
<INVESTMENTS-AT-VALUE> 5,761
<RECEIVABLES> 16
<ASSETS-OTHER> 29
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 5,806
<PAYABLE-FOR-SECURITIES> 8
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 9
<TOTAL-LIABILITIES> 17
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 4,796
<SHARES-COMMON-STOCK> 1
<SHARES-COMMON-PRIOR> 1
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 56
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 937
<NET-ASSETS> 17
<DIVIDEND-INCOME> 27
<INTEREST-INCOME> 3
<OTHER-INCOME> 0
<EXPENSES-NET> 39
<NET-INVESTMENT-INCOME> 30
<REALIZED-GAINS-CURRENT> 58
<APPREC-INCREASE-CURRENT> 858
<NET-CHANGE-FROM-OPS> 916
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (74)
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 0
<NUMBER-OF-SHARES-REDEEMED> 0
<SHARES-REINVESTED> 0
<NET-CHANGE-IN-ASSETS> 2,729
<ACCUMULATED-NII-PRIOR> 1
<ACCUMULATED-GAINS-PRIOR> 71
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 18
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 39
<AVERAGE-NET-ASSETS> 15
<PER-SHARE-NAV-BEGIN> 13.420
<PER-SHARE-NII> (0.030)
<PER-SHARE-GAIN-APPREC> 3.030
<PER-SHARE-DIVIDEND> 0.000
<PER-SHARE-DISTRIBUTIONS> (0.210)
<RETURNS-OF-CAPITAL> 0.000
<PER-SHARE-NAV-END> 16.210
<EXPENSE-RATIO> 1.740
<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 June 30,1998 included in the Portfolio's Semiannual Report
and is qualified in its entirety by reference to such financial statements.
</LEGEND>
<SERIES>
<NUMBER> 132
<NAME> JANUS ASPEN GROWTH AND INC. PORT. RET.
<MULTIPLIER> 1,000
<CURRENCY> U.S. DOLLARS
<S> <C>
<PERIOD-TYPE> YEAR
<FISCAL-YEAR-END> DEC-31-1998
<PERIOD-START> MAY-01-1998
<PERIOD-END> JUN-30-1998
<EXCHANGE-RATE> 1.000
<INVESTMENTS-AT-COST> 1,683
<INVESTMENTS-AT-VALUE> 1,761
<RECEIVABLES> 37
<ASSETS-OTHER> 8
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 1,806
<PAYABLE-FOR-SECURITIES> 100
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 4
<TOTAL-LIABILITIES> 104
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 1,619
<SHARES-COMMON-STOCK> 1
<SHARES-COMMON-PRIOR> 0
<ACCUMULATED-NII-CURRENT> 1
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 4
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 78
<NET-ASSETS> 11
<DIVIDEND-INCOME> 1
<INTEREST-INCOME> 2
<OTHER-INCOME> 0
<EXPENSES-NET> 2
<NET-INVESTMENT-INCOME> 1
<REALIZED-GAINS-CURRENT> 4
<APPREC-INCREASE-CURRENT> 78
<NET-CHANGE-FROM-OPS> 83
<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> 1,702
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 0
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 1
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 10
<AVERAGE-NET-ASSETS> 10
<PER-SHARE-NAV-BEGIN> 10.00
<PER-SHARE-NII> 0.01
<PER-SHARE-GAIN-APPREC> 0.54
<PER-SHARE-DIVIDEND> 0.00
<PER-SHARE-DISTRIBUTIONS> 0.00
<RETURNS-OF-CAPITAL> 0.00
<PER-SHARE-NAV-END> 10.55
<EXPENSE-RATIO> 1.67
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
