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<PAGE> PAGE 21
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<PAGE> PAGE 22
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<PAGE> PAGE 23
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<PAGE> PAGE 27
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<PAGE> PAGE 28
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<PAGE> PAGE 30
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<PAGE> PAGE 31
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<PAGE> PAGE 33
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<PAGE> PAGE 34
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<PAGE> PAGE 40
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<PAGE> PAGE 41
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008 B000901 A
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015 A000901 THE BANK OF NEW YORK
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<PAGE> PAGE 42
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<PAGE> PAGE 43
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<PAGE> PAGE 44
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<PAGE> PAGE 45
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<PAGE> PAGE 46
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008 A001001 MORGAN STANLEY DEAN WITTER ADVISORS INC.
008 B001001 A
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<PAGE> PAGE 47
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<PAGE> PAGE 48
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<PAGE> PAGE 49
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<PAGE> PAGE 50
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008 A001101 MORGAN STANLEY DEAN WITTER ADVISORS INC.
008 B001101 A
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<PAGE> PAGE 51
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<PAGE> PAGE 52
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<PAGE> PAGE 53
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<PAGE> PAGE 54
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008 A001201 MORGAN STANLEY DEAN WITTER ADVISORS INC.
008 B001201 A
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015 A001201 THE BANK OF NEW YORK
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<PAGE> PAGE 55
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<PAGE> PAGE 56
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<PAGE> PAGE 57
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<PAGE> PAGE 58
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008 A001301 MORGAN STANLEY DEAN WITTER ADVISORS INC.
008 B001301 A
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<PAGE> PAGE 59
008 D021301 NY
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015 A001301 THE BANK OF NEW YORK
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028 F021300 1828
028 F031300 0
028 F041300 1856
028 G011300 37820
028 G021300 2553
028 G031300 0
028 G041300 7408
<PAGE> PAGE 60
028 H001300 37820
045 001300 Y
046 001300 N
047 001300 Y
048 001300 0.750
048 A011300 0
048 A021300 0.000
048 B011300 0
048 B021300 0.000
048 C011300 0
048 C021300 0.000
048 D011300 0
048 D021300 0.000
048 E011300 0
048 E021300 0.000
048 F011300 0
048 F021300 0.000
048 G011300 0
048 G021300 0.000
048 H011300 0
048 H021300 0.000
048 I011300 0
048 I021300 0.000
048 J011300 0
048 J021300 0.000
048 K011300 0
048 K021300 0.000
055 A001300 N
055 B001300 N
056 001300 Y
057 001300 N
062 A001300 N
062 B001300 0.0
062 C001300 0.0
062 D001300 0.0
062 E001300 0.0
062 F001300 0.0
062 G001300 0.0
062 H001300 0.0
062 I001300 0.0
062 J001300 0.0
062 K001300 0.0
062 L001300 0.0
062 M001300 0.0
062 N001300 0.0
062 O001300 0.0
062 P001300 0.0
062 Q001300 0.0
062 R001300 0.0
063 A001300 0
063 B001300 0.0
<PAGE> PAGE 61
066 A001300 Y
066 B001300 N
066 C001300 N
066 D001300 N
066 E001300 Y
066 F001300 N
066 G001300 N
067 001300 N
068 A001300 N
068 B001300 N
069 001300 N
070 A011300 Y
070 A021300 Y
070 B011300 N
070 B021300 N
070 C011300 N
070 C021300 N
070 D011300 N
070 D021300 N
070 E011300 N
070 E021300 N
070 F011300 N
070 F021300 N
070 G011300 N
070 G021300 N
070 H011300 N
070 H021300 N
070 I011300 N
070 I021300 N
070 J011300 Y
070 J021300 Y
070 K011300 N
070 K021300 N
070 L011300 Y
070 L021300 Y
070 M011300 N
070 M021300 N
070 N011300 Y
070 N021300 N
070 O011300 Y
070 O021300 N
070 P011300 Y
070 P021300 N
070 Q011300 N
070 Q021300 N
070 R011300 N
070 R021300 N
071 A001300 50468
071 B001300 22960
071 C001300 67942
071 D001300 34
<PAGE> PAGE 62
072 A001300 6
072 B001300 1197
072 C001300 898
072 D001300 0
072 E001300 0
072 F001300 276
072 G001300 0
072 H001300 0
072 I001300 1
072 J001300 13
072 K001300 0
072 L001300 0
072 M001300 0
072 N001300 0
072 O001300 0
072 P001300 0
072 Q001300 0
072 R001300 9
072 S001300 1
072 T001300 0
072 U001300 0
072 V001300 0
072 W001300 1
072 X001300 301
072 Y001300 0
072 Z001300 1794
072AA001300 1152
072BB001300 469
072CC011300 561
072CC021300 0
072DD011300 1784
072DD021300 0
072EE001300 768
073 A011300 0.2660
073 A021300 0.0000
073 B001300 0.1058
073 C001300 0.0000
074 A001300 0
074 B001300 4024
074 C001300 3996
074 D001300 23299
074 E001300 19225
074 F001300 38558
074 G001300 0
074 H001300 0
074 I001300 0
074 J001300 5
074 K001300 93
074 L001300 769
074 M001300 2
074 N001300 89971
<PAGE> PAGE 63
074 O001300 821
074 P001300 229
074 Q001300 0
074 R011300 0
074 R021300 0
074 R031300 0
074 R041300 48
074 S001300 0
074 T001300 88873
074 U011300 7424
074 U021300 0
074 V011300 11.97
074 V021300 0.00
074 W001300 0.0000
074 X001300 3
074 Y001300 2096
075 A001300 0
075 B001300 74126
076 001300 0.00
008 A001401 MORGAN STANLEY DEAN WITTER ADVISORS INC.
008 B001401 A
008 C001401 801-42061
008 D011401 NEW YORK
008 D021401 NY
008 D031401 10048
015 A001401 THE BANK OF NEW YORK
015 B001401 C
015 C011401 NEW YORK
015 C021401 NY
015 C031401 10268
015 E011401 X
024 001400 N
025 D001401 0
025 D001402 0
025 D001403 0
025 D001404 0
025 D001405 0
025 D001406 0
025 D001407 0
025 D001408 0
028 A011400 0
028 A021400 0
028 A031400 0
028 A041400 0
028 B011400 0
028 B021400 0
028 B031400 0
028 B041400 0
028 C011400 0
028 C021400 0
028 C031400 0
<PAGE> PAGE 64
028 C041400 0
028 D011400 0
028 D021400 0
028 D031400 0
028 D041400 0
028 E011400 1831
028 E021400 0
028 E031400 0
028 E041400 76
028 F011400 3770
028 F021400 0
028 F031400 0
028 F041400 495
028 G011400 5601
028 G021400 0
028 G031400 0
028 G041400 571
028 H001400 0
045 001400 Y
046 001400 N
047 001400 Y
048 001400 0.400
048 A011400 0
048 A021400 0.000
048 B011400 0
048 B021400 0.000
048 C011400 0
048 C021400 0.000
048 D011400 0
048 D021400 0.000
048 E011400 0
048 E021400 0.000
048 F011400 0
048 F021400 0.000
048 G011400 0
048 G021400 0.000
048 H011400 0
048 H021400 0.000
048 I011400 0
048 I021400 0.000
048 J011400 0
048 J021400 0.000
048 K011400 0
048 K021400 0.000
055 A001400 N
055 B001400 N
056 001400 Y
057 001400 N
062 A001400 N
062 B001400 0.0
062 C001400 0.0
<PAGE> PAGE 65
062 D001400 0.0
062 E001400 0.0
062 F001400 0.0
062 G001400 0.0
062 H001400 0.0
062 I001400 0.0
062 J001400 0.0
062 K001400 0.0
062 L001400 0.0
062 M001400 0.0
062 N001400 0.0
062 O001400 0.0
062 P001400 0.0
062 Q001400 0.0
062 R001400 0.0
063 A001400 0
063 B001400 0.0
066 A001400 Y
066 B001400 N
066 C001400 N
066 D001400 N
066 E001400 N
066 F001400 N
066 G001400 Y
067 001400 N
068 A001400 N
068 B001400 N
069 001400 Y
070 A011400 Y
070 A021400 Y
070 B011400 N
070 B021400 N
070 C011400 N
070 C021400 N
070 D011400 N
070 D021400 N
070 E011400 N
070 E021400 N
070 F011400 Y
070 F021400 Y
070 G011400 N
070 G021400 N
070 H011400 N
070 H021400 N
070 I011400 N
070 I021400 N
070 J011400 N
070 J021400 N
070 K011400 Y
070 K021400 N
070 L011400 Y
<PAGE> PAGE 66
070 L021400 Y
070 M011400 N
070 M021400 N
070 N011400 Y
070 N021400 N
070 O011400 Y
070 O021400 N
070 P011400 Y
070 P021400 N
070 Q011400 N
070 Q021400 N
070 R011400 N
070 R021400 N
071 A001400 6447
071 B001400 2
071 C001400 4929
071 D001400 0
072 A001400 6
072 B001400 5
072 C001400 6
072 D001400 0
072 E001400 0
072 F001400 2
072 G001400 0
072 H001400 0
072 I001400 0
072 J001400 0
072 K001400 0
072 L001400 0
072 M001400 0
072 N001400 0
072 O001400 0
072 P001400 0
072 Q001400 0
072 R001400 4
072 S001400 0
072 T001400 0
072 U001400 0
072 V001400 0
072 W001400 0
072 X001400 6
072 Y001400 6
072 Z001400 11
072AA001400 4
072BB001400 0
072CC011400 2
072CC021400 0
072DD011400 0
072DD021400 0
072EE001400 0
073 A011400 0.0000
<PAGE> PAGE 67
073 A021400 0.0000
073 B001400 0.0000
073 C001400 0.0000
074 A001400 22
074 B001400 0
074 C001400 1200
074 D001400 0
074 E001400 0
074 F001400 6590
074 G001400 0
074 H001400 0
074 I001400 0
074 J001400 0
074 K001400 4
074 L001400 310
074 M001400 0
074 N001400 8126
074 O001400 930
074 P001400 0
074 Q001400 0
074 R011400 0
074 R021400 0
074 R031400 0
074 R041400 4
074 S001400 0
074 T001400 7192
074 U011400 700
074 U021400 0
074 V011400 10.27
074 V021400 0.00
074 W001400 0.0000
074 X001400 3
074 Y001400 0
075 A001400 0
075 B001400 4299
076 001400 0.00
008 A001501 MORGAN STANLEY DEAN WITTER ADVISORS INC.
008 B001501 A
008 C001501 801-42061
008 D011501 NEW YORK
008 D021501 NY
008 D031501 10048
015 A001501 THE BANK OF NEW YORK
015 B001501 C
015 C011501 NEW YORK
015 C021501 NY
015 C031501 10268
015 E011501 X
024 001500 N
025 D001501 0
025 D001502 0
<PAGE> PAGE 68
025 D001503 0
025 D001504 0
025 D001505 0
025 D001506 0
025 D001507 0
025 D001508 0
028 A011500 0
028 A021500 0
028 A031500 0
028 A041500 0
028 B011500 0
028 B021500 0
028 B031500 0
028 B041500 0
028 C011500 0
028 C021500 0
028 C031500 0
028 C041500 0
028 D011500 0
028 D021500 0
028 D031500 0
028 D041500 0
028 E011500 9162
028 E021500 0
028 E031500 0
028 E041500 545
028 F011500 13360
028 F021500 0
028 F031500 0
028 F041500 3707
028 G011500 22522
028 G021500 0
028 G031500 0
028 G041500 4252
028 H001500 0
045 001500 Y
046 001500 N
047 001500 Y
048 001500 0.650
048 A011500 0
048 A021500 0.000
048 B011500 0
048 B021500 0.000
048 C011500 0
048 C021500 0.000
048 D011500 0
048 D021500 0.000
048 E011500 0
048 E021500 0.000
048 F011500 0
048 F021500 0.000
<PAGE> PAGE 69
048 G011500 0
048 G021500 0.000
048 H011500 0
048 H021500 0.000
048 I011500 0
048 I021500 0.000
048 J011500 0
048 J021500 0.000
048 K011500 0
048 K021500 0.000
055 A001500 N
055 B001500 N
056 001500 Y
057 001500 N
062 A001500 N
062 B001500 0.0
062 C001500 0.0
062 D001500 0.0
062 E001500 0.0
062 F001500 0.0
062 G001500 0.0
062 H001500 0.0
062 I001500 0.0
062 J001500 0.0
062 K001500 0.0
062 L001500 0.0
062 M001500 0.0
062 N001500 0.0
062 O001500 0.0
062 P001500 0.0
062 Q001500 0.0
062 R001500 0.0
063 A001500 0
063 B001500 0.0
066 A001500 Y
066 B001500 N
066 C001500 N
066 D001500 Y
066 E001500 N
066 F001500 N
066 G001500 N
067 001500 N
068 A001500 N
068 B001500 N
069 001500 N
070 A011500 Y
070 A021500 Y
070 B011500 Y
070 B021500 N
070 C011500 Y
070 C021500 N
<PAGE> PAGE 70
070 D011500 Y
070 D021500 N
070 E011500 Y
070 E021500 N
070 F011500 Y
070 F021500 N
070 G011500 Y
070 G021500 N
070 H011500 Y
070 H021500 N
070 I011500 N
070 I021500 N
070 J011500 Y
070 J021500 N
070 K011500 N
070 K021500 N
070 L011500 Y
070 L021500 Y
070 M011500 Y
070 M021500 Y
070 N011500 Y
070 N021500 N
070 O011500 Y
070 O021500 N
070 P011500 Y
070 P021500 N
070 Q011500 N
070 Q021500 N
070 R011500 N
070 R021500 N
071 A001500 15605
071 B001500 4
071 C001500 10160
071 D001500 0
072 A001500 6
072 B001500 28
072 C001500 13
072 D001500 0
072 E001500 0
072 F001500 8
072 G001500 0
072 H001500 0
072 I001500 0
072 J001500 0
072 K001500 0
072 L001500 0
072 M001500 0
072 N001500 0
072 O001500 0
072 P001500 0
072 Q001500 0
<PAGE> PAGE 71
072 R001500 4
072 S001500 0
072 T001500 0
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072 V001500 0
072 W001500 0
072 X001500 12
072 Y001500 12
072 Z001500 41
072AA001500 4
072BB001500 0
072CC011500 2
072CC021500 0
072DD011500 0
072DD021500 0
072EE001500 0
073 A011500 0.0000
073 A021500 0.0000
073 B001500 0.0000
073 C001500 0.0000
074 A001500 77
074 B001500 518
074 C001500 2900
074 D001500 0
074 E001500 0
074 F001500 15607
074 G001500 0
074 H001500 0
074 I001500 0
074 J001500 0
074 K001500 4
074 L001500 294
074 M001500 0
074 N001500 19400
074 O001500 717
074 P001500 0
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074 R011500 0
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074 R031500 0
074 R041500 366
074 S001500 0
074 T001500 18317
074 U011500 1858
074 U021500 0
074 V011500 9.86
074 V021500 0.00
074 W001500 0.0000
074 X001500 3
074 Y001500 0
075 A001500 0
<PAGE> PAGE 72
075 B001500 10181
076 001500 0.00
SIGNATURE BARRY FINK
TITLE VICE PRESIDENT
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000716716
<NAME> MSDW VARIABLE INVESTEMENT SERIES
<SERIES>
<NUMBER> 1
<NAME> MONEY MARKET PORTFOLIO
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> DEC-31-1998
<PERIOD-END> JUN-30-1998
<INVESTMENTS-AT-COST> 352,225,052
<INVESTMENTS-AT-VALUE> 352,225,052
<RECEIVABLES> 1,044,651
<ASSETS-OTHER> 11,379
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 353,281,082
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 3,210,628
<TOTAL-LIABILITIES> 3,210,628
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 350,070,431
<SHARES-COMMON-STOCK> 350,070,431
<SHARES-COMMON-PRIOR> 335,578,084
<ACCUMULATED-NII-CURRENT> 23
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 0
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 0
<NET-ASSETS> 350,070,454
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 9,532,905
<OTHER-INCOME> 0
<EXPENSES-NET> 880,738
<NET-INVESTMENT-INCOME> 8,652,167
<REALIZED-GAINS-CURRENT> 0
<APPREC-INCREASE-CURRENT> 0
<NET-CHANGE-FROM-OPS> 8,652,167
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 8,652,209
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 165,527,676
<NUMBER-OF-SHARES-REDEEMED> (159,687,538)
<SHARES-REINVESTED> 8,652,209
<NET-CHANGE-IN-ASSETS> 14,492,305
<ACCUMULATED-NII-PRIOR> 65
<ACCUMULATED-GAINS-PRIOR> 0
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 844,095
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 880,738
<AVERAGE-NET-ASSETS> 340,436,196
<PER-SHARE-NAV-BEGIN> 1.00
<PER-SHARE-NII> .025
<PER-SHARE-GAIN-APPREC> 0
<PER-SHARE-DIVIDEND> (.025)
<PER-SHARE-DISTRIBUTIONS> 0
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 1.00
<EXPENSE-RATIO> .52
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000716716
<NAME> MSDW VARIABLE INVESTMENT SERIES
<SERIES>
<NUMBER> 2
<NAME> QUALITY INCOME PLUS PORTFOLIO
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> DEC-31-1998
<PERIOD-END> JUN-30-1998
<INVESTMENTS-AT-COST> 467,096,666
<INVESTMENTS-AT-VALUE> 490,887,753
<RECEIVABLES> 16,652,728
<ASSETS-OTHER> 261,295
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 507,801,776
<PAYABLE-FOR-SECURITIES> 12,935,052
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 729,004
<TOTAL-LIABILITIES> 13,664,056
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 489,007,491
<SHARES-COMMON-STOCK> 45,339,654
<SHARES-COMMON-PRIOR> 44,123,343
<ACCUMULATED-NII-CURRENT> 451
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> (18,661,309)
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 23,791,087
<NET-ASSETS> 494,137,720
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 16,552,688
<OTHER-INCOME> 0
<EXPENSES-NET> 1,270,968
<NET-INVESTMENT-INCOME> 15,281,720
<REALIZED-GAINS-CURRENT> 4,582,236
<APPREC-INCREASE-CURRENT> 1,402,602
<NET-CHANGE-FROM-OPS> 21,266,558
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (15,281,417)
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 4,725,579
<NUMBER-OF-SHARES-REDEEMED> (4,922,015)
<SHARES-REINVESTED> 1,412,747
<NET-CHANGE-IN-ASSETS> 19,148,212
<ACCUMULATED-NII-PRIOR> 148
<ACCUMULATED-GAINS-PRIOR> (23,243,545)
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 1,201,645
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 1,270,968
<AVERAGE-NET-ASSETS> 484,641,356
<PER-SHARE-NAV-BEGIN> 10.77
<PER-SHARE-NII> .34
<PER-SHARE-GAIN-APPREC> .13
<PER-SHARE-DIVIDEND> (.34)
<PER-SHARE-DISTRIBUTIONS> 0
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 10.9
<EXPENSE-RATIO> .53
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000716716
<NAME> MSDW VARIABLE INVETMENT SERIES
<SERIES>
<NUMBER> 3
<NAME> HIGH YIELD PORTFOLIO
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> DEC-31-1998
<PERIOD-END> JUN-30-1998
<INVESTMENTS-AT-COST> 445,396,208
<INVESTMENTS-AT-VALUE> 420,417,388
<RECEIVABLES> 13,626,864
<ASSETS-OTHER> 2,129
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 434,046,381
<PAYABLE-FOR-SECURITIES> 13,026,083
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 455,178
<TOTAL-LIABILITIES> 13,481,261
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 510,970,197
<SHARES-COMMON-STOCK> 70,013,076
<SHARES-COMMON-PRIOR> 60,135,547
<ACCUMULATED-NII-CURRENT> 159,071
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> (65,585,328)
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> (24,978,820)
<NET-ASSETS> 420,565,120
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 24,518,945
<OTHER-INCOME> 0
<EXPENSES-NET> 1,039,826
<NET-INVESTMENT-INCOME> 23,479,119
<REALIZED-GAINS-CURRENT> (2,239,863)
<APPREC-INCREASE-CURRENT> (5,652,680)
<NET-CHANGE-FROM-OPS> 15,586,576
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (23,614,944)
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 13,288,566
<NUMBER-OF-SHARES-REDEEMED> (7,283,936)
<SHARES-REINVESTED> 3,872,899
<NET-CHANGE-IN-ASSETS> 52,503,849
<ACCUMULATED-NII-PRIOR> 294,896
<ACCUMULATED-GAINS-PRIOR> (63,345,465)
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 987,907
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 1,039,826
<AVERAGE-NET-ASSETS> 398,437,444
<PER-SHARE-NAV-BEGIN> 6.12
<PER-SHARE-NII> .36
<PER-SHARE-GAIN-APPREC> (.11)
<PER-SHARE-DIVIDEND> (.36)
<PER-SHARE-DISTRIBUTIONS> 0
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 6.01
<EXPENSE-RATIO> .53
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000716716
<NAME> MSDW VARIABLE INVESTMENT SERIES
<SERIES>
<NUMBER> 4
<NAME> UTILITIES PORTFOLIO
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> DEC-31-1998
<PERIOD-END> JUN-30-1998
<INVESTMENTS-AT-COST> 311,832,700
<INVESTMENTS-AT-VALUE> 484,122,492
<RECEIVABLES> 2,229,519
<ASSETS-OTHER> 26,010
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 486,378,021
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 505,034
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<NAME> MSDW VARIABLE INVESTMENT SERIES
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<NAME> EQUITY PORTFOLIO
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<NAME> STRATEGIST PORTFOLIO
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<NAME> MSDW VARIABLE INVESTMENT SERIES
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<NAME> PACIFIC GROWTH PORTFOLIO
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<NAME> MSDW VARIABLE INVESTMENT SERIES
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