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<PAGE> PAGE 22
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<PAGE> PAGE 41
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<PAGE> PAGE 42
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008 A000901 MORGAN STANLEY DEAN WITTER ADVISORS INC.
<PAGE> PAGE 43
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015 A000901 THE BANK OF NEW YORK
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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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<PAGE> PAGE 47
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008 A001001 MORGAN STANLEY DEAN WITTER ADVISORS INC.
008 B001001 A
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015 A001001 THE CHASE MANHATTAN BANK
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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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<PAGE> PAGE 51
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008 A001101 MORGAN STANLEY DEAN WITTER ADVISORS INC.
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<PAGE> PAGE 52
008 D031101 10048
008 A001102 MSDW INVESTMENT MANAGEMENT INC.
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015 A001101 THE CHASE MANHATTAN BANK
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<PAGE> PAGE 53
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<PAGE> PAGE 54
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<PAGE> PAGE 55
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<PAGE> PAGE 56
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008 A001201 MORGAN STANLEY DEAN WITTER ADVISORS INC.
008 B001201 A
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008 D031201 10048
015 A001201 THE BANK OF NEW YORK
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<PAGE> PAGE 57
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<PAGE> PAGE 58
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<PAGE> PAGE 59
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<PAGE> PAGE 60
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008 A001301 MORGAN STANLEY DEAN WITTER ADVISORS INC.
008 B001301 A
008 C001301 801-42061
008 D011301 NEW YORK
008 D021301 NY
<PAGE> PAGE 61
008 D031301 10048
015 A001301 THE BANK OF NEW YORK
015 B001301 C
015 C011301 NEW YORK
015 C021301 NY
015 C031301 10268
015 E011301 X
024 001300 Y
025 A001301 MERRILL LYNCH & CO. INC. $2.39
025 B001301 13-5674085
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045 001300 Y
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<PAGE> PAGE 62
048 001300 0.750
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048 B021300 0.000
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048 I011300 0
048 I021300 0.000
048 J011300 0
048 J021300 0.000
048 K011300 0
048 K021300 0.000
049 001300 N
050 001300 N
051 001300 N
052 001300 N
053 A001300 N
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
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062 P001300 0.0
062 Q001300 0.0
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063 A001300 0
<PAGE> PAGE 63
063 B001300 0.0
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 N
070 M011300 N
070 M021300 N
070 N011300 Y
070 N021300 N
070 O011300 N
070 O021300 N
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070 P021300 N
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070 Q021300 N
070 R011300 N
070 R021300 N
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<PAGE> PAGE 64
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<PAGE> PAGE 65
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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
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015 C021401 NY
015 C031401 10268
015 E011401 X
024 001400 Y
025 A001401 LEHMAN BROTHERS
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025 C001401 E
025 D001401 147
025 A001402 MERRILL LYNCH & CO., INC.
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025 C001402 E
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025 A001404 BANK OF NEW YORK (THE)
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025 A001405 MORGAN (J.P) SECURITIES
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<PAGE> PAGE 66
025 C001405 E
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025 A001406 PAINE WEBBER GROUP, INC.
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045 001400 Y
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<PAGE> PAGE 67
048 F011400 0
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048 H021400 0.000
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048 I021400 0.000
048 J011400 0
048 J021400 0.000
048 K011400 0
048 K021400 0.000
049 001400 N
050 001400 N
051 001400 N
052 001400 N
053 A001400 N
055 A001400 N
055 B001400 N
056 001400 Y
057 001400 N
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062 C001400 0.0
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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
<PAGE> PAGE 68
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
070 L021400 Y
070 M011400 N
070 M021400 N
070 N011400 Y
070 N021400 N
070 O011400 N
070 O021400 N
070 P011400 Y
070 P021400 N
070 Q011400 N
070 Q021400 N
070 R011400 N
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071 A001400 114612
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<PAGE> PAGE 69
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<PAGE> PAGE 70
074 U021400 0
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008 A001501 MORGAN STANLEY DEAN WITTER ADVISORS INC.
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015 A001501 THE BANK OF NEW YORK
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<PAGE> PAGE 71
028 E031500 0
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<PAGE> PAGE 72
062 F001500 0.0
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066 F001500 N
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<PAGE> PAGE 73
070 M021500 N
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<PAGE> PAGE 74
073 C001500 0.0000
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008 A001601 MORGAN STANLEY DEAN WITTER ADVISORS INC.
008 B001601 A
008 C001601 801-42061
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008 D031601 10048
015 A001601 THE BANK OF NEW YORK
015 B001601 C
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015 C031601 10268
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024 001600 Y
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<PAGE> PAGE 75
025 A001602 LEHMAN BROTHERS INC.
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<PAGE> PAGE 76
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<PAGE> PAGE 77
066 G001600 N
067 001600 N
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071 A001600 36673
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<PAGE> PAGE 78
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074 F001600 32858
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<PAGE> PAGE 79
074 R041600 44
074 S001600 0
074 T001600 38197
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SIGNATURE BARRY FINK
TITLE VICE PRESIDENT
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
MSDW VARIABLE INVESTMENT SERIES- GLOBAL DIVIDEND GROWTH
</LEGEND>
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> DECEMBER 31, 1999
<PERIOD-END> DECEMBER 31, 1999
<INVESTMENTS-AT-COST> 446,036,550
<INVESTMENTS-AT-VALUE> 505,698,022
<RECEIVABLES> 1,632,354
<ASSETS-OTHER> 119,081
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 507,449,457
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> (519,967)
<TOTAL-LIABILITIES> (519,967)
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 415,510,169
<SHARES-COMMON-STOCK> 35,107,218
<SHARES-COMMON-PRIOR> 35,025,587
<ACCUMULATED-NII-CURRENT> 900,043
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 30,870,449
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 59,648,829
<NET-ASSETS> 506,929,490
<DIVIDEND-INCOME> 12,957,288
<INTEREST-INCOME> 393,946
<OTHER-INCOME> 0
<EXPENSES-NET> (4,049,262)
<NET-INVESTMENT-INCOME> 9,301,972
<REALIZED-GAINS-CURRENT> 42,434,603
<APPREC-INCREASE-CURRENT> 14,999,600
<NET-CHANGE-FROM-OPS> 66,736,175
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (9,852,158)
<DISTRIBUTIONS-OF-GAINS> (35,181,150)
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 3,735,961
<NUMBER-OF-SHARES-REDEEMED> (6,868,373)
<SHARES-REINVESTED> 3,214,043
<NET-CHANGE-IN-ASSETS> 22,701,926
<ACCUMULATED-NII-PRIOR> 520,531
<ACCUMULATED-GAINS-PRIOR> 24,439,258
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> (3,669,864)
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> (4,049,262)
<AVERAGE-NET-ASSETS> 489,315,172
<PER-SHARE-NAV-BEGIN> 13.82
<PER-SHARE-NII> 0.27
<PER-SHARE-GAIN-APPREC> 1.71
<PER-SHARE-DIVIDEND> (0.29)
<PER-SHARE-DISTRIBUTIONS> (1.07)
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 14.44
<EXPENSE-RATIO> 0.83%
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
MSDW VARIABLE INVESTMENT SERIES-PACIFIC GROWTH
</LEGEND>
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> DECEMBER 31, 1999
<PERIOD-END> DECEMBER 31, 1999
<INVESTMENTS-AT-COST> 85,385,117
<INVESTMENTS-AT-VALUE> 115,764,482
<RECEIVABLES> 265,882
<ASSETS-OTHER> 0
<OTHER-ITEMS-ASSETS> 403,842
<TOTAL-ASSETS> 116,434,206
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> (506,822)
<TOTAL-LIABILITIES> (506,822)
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 129,292,287
<SHARES-COMMON-STOCK> 13,698,224
<SHARES-COMMON-PRIOR> 10,269,558
<ACCUMULATED-NII-CURRENT> 503,902
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> (44,030,449)
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 30,154,644
<NET-ASSETS> 115,927,384
<DIVIDEND-INCOME> 1,507,032
<INTEREST-INCOME> 297,147
<OTHER-INCOME> 0
<EXPENSES-NET> (1,130,252)
<NET-INVESTMENT-INCOME> 673,927
<REALIZED-GAINS-CURRENT> 15,775,724
<APPREC-INCREASE-CURRENT> 28,380,099
<NET-CHANGE-FROM-OPS> 44,829,750
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (770,896)
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 37,338,181
<NUMBER-OF-SHARES-REDEEMED> (34,025,265)
<SHARES-REINVESTED> 115,750
<NET-CHANGE-IN-ASSETS> 63,085,847
<ACCUMULATED-NII-PRIOR> 411,637
<ACCUMULATED-GAINS-PRIOR> (59,610,315)
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> (754,955)
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> (1,130,252)
<AVERAGE-NET-ASSETS> 79,468,935
<PER-SHARE-NAV-BEGIN> 5.15
<PER-SHARE-NII> 0.04
<PER-SHARE-GAIN-APPREC> 3.33
<PER-SHARE-DIVIDEND> (0.06)
<PER-SHARE-DISTRIBUTIONS> 0.00
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 8.46
<EXPENSE-RATIO> 1.42%
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
MSDW VARIABLE INVESTMENT SERIES-PACIFIC GROWTH
</LEGEND>
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> DECEMBER 31, 1999
<PERIOD-END> DECEMBER 31, 1999
<INVESTMENTS-AT-COST> 85,385,117
<INVESTMENTS-AT-VALUE> 115,764,482
<RECEIVABLES> 265,882
<ASSETS-OTHER> 0
<OTHER-ITEMS-ASSETS> 403,842
<TOTAL-ASSETS> 116,434,206
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> (506,822)
<TOTAL-LIABILITIES> (506,822)
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 129,299,287
<SHARES-COMMON-STOCK> 13,698,224
<SHARES-COMMON-PRIOR> 10,269,558
<ACCUMULATED-NII-CURRENT> 503,902
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> (44,030,449)
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 30,154,644
<NET-ASSETS> 115,927,384
<DIVIDEND-INCOME> 1,507,032
<INTEREST-INCOME> 297,147
<OTHER-INCOME> 0
<EXPENSES-NET> (1,130,252)
<NET-INVESTMENT-INCOME> 673,927
<REALIZED-GAINS-CURRENT> 15,775,724
<APPREC-INCREASE-CURRENT> 28,380,099
<NET-CHANGE-FROM-OPS> 44,829,750
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (770,896)
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 37,338,181
<NUMBER-OF-SHARES-REDEEMED> (34,025,265)
<SHARES-REINVESTED> 115,750
<NET-CHANGE-IN-ASSETS> 63,085,847
<ACCUMULATED-NII-PRIOR> 411,637
<ACCUMULATED-GAINS-PRIOR> (59,610,315)
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> (754,955)
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> (1,130,252)
<AVERAGE-NET-ASSETS> 79,468,935
<PER-SHARE-NAV-BEGIN> 5.15
<PER-SHARE-NII> 0.04
<PER-SHARE-GAIN-APPREC> 3.33
<PER-SHARE-DIVIDEND> (0.06)
<PER-SHARE-DISTRIBUTIONS> 0.00
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 8.46
<EXPENSE-RATIO> 1.42%
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
MSDW VARIABLE INVESTMENT SERIES- S&P 500 INDEX
</LEGEND>
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> DECEMBER 31, 1999
<PERIOD-END> DECEMBER 31, 1999
<INVESTMENTS-AT-COST> 160,830,067
<INVESTMENTS-AT-VALUE> 185,523,758
<RECEIVABLES> 470,121
<ASSETS-OTHER> 72,389
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 186,066,268
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> (103,448)
<TOTAL-LIABILITIES> (103,448)
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 159,038,798
<SHARES-COMMON-STOCK> 13,846,751
<SHARES-COMMON-PRIOR> 4,343,636
<ACCUMULATED-NII-CURRENT> 1,179,906
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 880,162
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 24,863,954
<NET-ASSETS> 185,962,820
<DIVIDEND-INCOME> 1,387,842
<INTEREST-INCOME> 335,970
<OTHER-INCOME> 0
<EXPENSES-NET> (543,900)
<NET-INVESTMENT-INCOME> 1,179,912
<REALIZED-GAINS-CURRENT> 977,294
<APPREC-INCREASE-CURRENT> 20,690,042
<NET-CHANGE-FROM-OPS> 22,847,248
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (244,996)
<DISTRIBUTIONS-OF-GAINS> (283,184)
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 11,576,170
<NUMBER-OF-SHARES-REDEEMED> (2,115,310)
<SHARES-REINVESTED> 42,255
<NET-CHANGE-IN-ASSETS> 137,230,852
<ACCUMULATED-NII-PRIOR> 244,990
<ACCUMULATED-GAINS-PRIOR> 186,052
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> (457,843)
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> (550,802)
<AVERAGE-NET-ASSETS> 114,460,681
<PER-SHARE-NAV-BEGIN> 11.22
<PER-SHARE-NII> 0.06
<PER-SHARE-GAIN-APPREC> 2.21
<PER-SHARE-DIVIDEND> (0.03)
<PER-SHARE-DISTRIBUTIONS> (0.03)
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 13.43
<EXPENSE-RATIO> 0.48%
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
MSDW VARIABLE INVESTMENT SERIES- UTILITIES
</LEGEND>
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> DECEMBER 31, 1999
<PERIOD-END> DECEMBER 31, 1999
<INVESTMENTS-AT-COST> 337,573,788
<INVESTMENTS-AT-VALUE> 579,661,666
<RECEIVABLES> 2,185,836
<ASSETS-OTHER> 83,668
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 581,931,170
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> (1,444,218)
<TOTAL-LIABILITIES> (1,444,218)
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 304,719,624
<SHARES-COMMON-STOCK> 25,350,647
<SHARES-COMMON-PRIOR> 26,391,176
<ACCUMULATED-NII-CURRENT> (19)
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 33,679,469
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 242,087,878
<NET-ASSETS> 580,486,952
<DIVIDEND-INCOME> 13,715,767
<INTEREST-INCOME> 4,197,616
<OTHER-INCOME> 0
<EXPENSES-NET> (3,756,117)
<NET-INVESTMENT-INCOME> 14,157,266
<REALIZED-GAINS-CURRENT> 33,719,313
<APPREC-INCREASE-CURRENT> 19,868,085
<NET-CHANGE-FROM-OPS> 67,744,664
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (14,157,310)
<DISTRIBUTIONS-OF-GAINS> (11,183,423)
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 3,501,422
<NUMBER-OF-SHARES-REDEEMED> (5,711,878)
<SHARES-REINVESTED> 1,169,927
<NET-CHANGE-IN-ASSETS> 19,684,119
<ACCUMULATED-NII-PRIOR> 25
<ACCUMULATED-GAINS-PRIOR> 11,143,579
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> (3,606,185)
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> (3,756,117)
<AVERAGE-NET-ASSETS> 564,760,875
<PER-SHARE-NAV-BEGIN> 21.25
<PER-SHARE-NII> 0.55
<PER-SHARE-GAIN-APPREC> 2.08
<PER-SHARE-DIVIDEND> (0.55)
<PER-SHARE-DISTRIBUTIONS> (0.43)
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 22.90
<EXPENSE-RATIO> 0.67%
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
MORGAN STANLEY DEAN WITTER VARIABLE INVESTMENT SERIES - COMPETITIVE EDGE
"BEST IDEAS"
</LEGEND>
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> DEC-31-1999
<PERIOD-END> DEC-31-1999
<INVESTMENTS-AT-COST> 48,393,113
<INVESTMENTS-AT-VALUE> 62,230,336
<RECEIVABLES> 95,437
<ASSETS-OTHER> 1,047
<OTHER-ITEMS-ASSETS> 35,873
<TOTAL-ASSETS> 62,362,693
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> (67,891)
<TOTAL-LIABILITIES> (67,891)
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 49,642,862
<SHARES-COMMON-STOCK> 5,036,100
<SHARES-COMMON-PRIOR> 3,722,740
<ACCUMULATED-NII-CURRENT> 316,203
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> (1,500,684)
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 13,836,421
<NET-ASSETS> 62,294,802
<DIVIDEND-INCOME> 405,489
<INTEREST-INCOME> 162,274
<OTHER-INCOME> 0
<EXPENSES-NET> (248,965)
<NET-INVESTMENT-INCOME> 318,798
<REALIZED-GAINS-CURRENT> (231,782)
<APPREC-INCREASE-CURRENT> 11,840,897
<NET-CHANGE-FROM-OPS> 11,927,913
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (267,149)
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 2,453,400
<NUMBER-OF-SHARES-REDEEMED> (1,165,678)
<SHARES-REINVESTED> 25,638
<NET-CHANGE-IN-ASSETS> 25,156,022
<ACCUMULATED-NII-PRIOR> 267,028
<ACCUMULATED-GAINS-PRIOR> (1,271,376)
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> (287,991)
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> (341,707)
<AVERAGE-NET-ASSETS> 44,306,275
<PER-SHARE-NAV-BEGIN> 9.82
<PER-SHARE-NII> 0.06
<PER-SHARE-GAIN-APPREC> 2.56
<PER-SHARE-DIVIDEND> (0.07)
<PER-SHARE-DISTRIBUTIONS> 0
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 12.37
<EXPENSE-RATIO> 0.56
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
MORGAN STANLEY DEAN WITTER VARIABLE INVESTMENT SERIES - AGGRESSIVE EQUITY
</LEGEND>
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> DEC-31-1999
<PERIOD-END> DEC-31-1999
<INVESTMENTS-AT-COST> 30,360,886
<INVESTMENTS-AT-VALUE> 37,742,799
<RECEIVABLES> 1,546,203
<ASSETS-OTHER> 20,224
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 39,309,226
<PAYABLE-FOR-SECURITIES> (1,050,031)
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> (61,819)
<TOTAL-LIABILITIES> (1,111,850)
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 30,947,469
<SHARES-COMMON-STOCK> 2,621,778
<SHARES-COMMON-PRIOR> 0
<ACCUMULATED-NII-CURRENT> 49,886
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> (181,892)
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 7,381,913
<NET-ASSETS> 38,197,376
<DIVIDEND-INCOME> 16,939
<INTEREST-INCOME> 76,001
<OTHER-INCOME> 0
<EXPENSES-NET> (34,957)
<NET-INVESTMENT-INCOME> 57,983
<REALIZED-GAINS-CURRENT> (181,892)
<APPREC-INCREASE-CURRENT> 7,381,913
<NET-CHANGE-FROM-OPS> 7,258,004
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (8,097)
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 3,507,417
<NUMBER-OF-SHARES-REDEEMED> (886,433)
<SHARES-REINVESTED> 794
<NET-CHANGE-IN-ASSETS> 38,197,326
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 0
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> (50,317)
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> (94,270)
<AVERAGE-NET-ASSETS> 10,118,838
<PER-SHARE-NAV-BEGIN> 10.00
<PER-SHARE-NII> 0.05
<PER-SHARE-GAIN-APPREC> 4.55
<PER-SHARE-DIVIDEND> (0.03)
<PER-SHARE-DISTRIBUTIONS> 0
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 14.57
<EXPENSE-RATIO> 0.52
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
MORGAN STANLEY DEAN WITTER VARIABLE INVESTMENT SERIES - EQUITY
</LEGEND>
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> DEC-31-1999
<PERIOD-END> DEC-31-1999
<INVESTMENTS-AT-COST> 1,427,111,517
<INVESTMENTS-AT-VALUE> 2,083,635,181
<RECEIVABLES> 1,581,071
<ASSETS-OTHER> 2,921
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 2,085,219,173
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> (2,147,788)
<TOTAL-LIABILITIES> (2,147,788)
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 1,138,756,520
<SHARES-COMMON-STOCK> 38,662,789
<SHARES-COMMON-PRIOR> 29,505,782
<ACCUMULATED-NII-CURRENT> 2
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 287,791,199
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 656,523,664
<NET-ASSETS> 2,083,071,385
<DIVIDEND-INCOME> 8,369,145
<INTEREST-INCOME> 6,885,294
<OTHER-INCOME> 0
<EXPENSES-NET> (7,369,509)
<NET-INVESTMENT-INCOME> 7,884,930
<REALIZED-GAINS-CURRENT> 301,936,226
<APPREC-INCREASE-CURRENT> 429,853,712
<NET-CHANGE-FROM-OPS> 739,674,868
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (7,879,428)
<DISTRIBUTIONS-OF-GAINS> (168,434,937)
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 10,020,241
<NUMBER-OF-SHARES-REDEEMED> (5,269,790)
<SHARES-REINVESTED> 4,406,556
<NET-CHANGE-IN-ASSETS> 944,658,662
<ACCUMULATED-NII-PRIOR> (5,165)
<ACCUMULATED-GAINS-PRIOR> 160,637,236
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> (7,156,661)
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> (7,369,509)
<AVERAGE-NET-ASSETS> 1,454,033,898
<PER-SHARE-NAV-BEGIN> 38.58
<PER-SHARE-NII> 0.22
<PER-SHARE-GAIN-APPREC> 20.48
<PER-SHARE-DIVIDEND> (0.22)
<PER-SHARE-DISTRIBUTIONS> (5.18)
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 53.88
<EXPENSE-RATIO> 0.51
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
MORGAN STANLEY DEAN WITTER VARIABLE INVESTMENT SERIES - INCOME BUILDER
</LEGEND>
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> DEC-31-1999
<PERIOD-END> DEC-31-1999
<INVESTMENTS-AT-COST> 83,466,162
<INVESTMENTS-AT-VALUE> 84,301,544
<RECEIVABLES> 536,423
<ASSETS-OTHER> 2,976
<OTHER-ITEMS-ASSETS> 63,133
<TOTAL-ASSETS> 84,904,076
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> (3,287,740)
<TOTAL-LIABILITIES> (3,287,740)
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 81,516,823
<SHARES-COMMON-STOCK> 7,134,358
<SHARES-COMMON-PRIOR> 7,657,710
<ACCUMULATED-NII-CURRENT> 107,871
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> (843,740)
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 835,382
<NET-ASSETS> 81,616,336
<DIVIDEND-INCOME> 2,662,275
<INTEREST-INCOME> 2,216,605
<OTHER-INCOME> 0
<EXPENSES-NET> (679,625)
<NET-INVESTMENT-INCOME> 4,199,255
<REALIZED-GAINS-CURRENT> (99,594)
<APPREC-INCREASE-CURRENT> 1,427,366
<NET-CHANGE-FROM-OPS> 5,527,027
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (4,106,298)
<DISTRIBUTIONS-OF-GAINS> (1,674,655)
<DISTRIBUTIONS-OTHER> (120,208)
<NUMBER-OF-SHARES-SOLD> 1,493,695
<NUMBER-OF-SHARES-REDEEMED> (2,529,168)
<SHARES-REINVESTED> 512,121
<NET-CHANGE-IN-ASSETS> (6,152,798)
<ACCUMULATED-NII-PRIOR> 14,879
<ACCUMULATED-GAINS-PRIOR> 930,544
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> (632,479)
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> (679,625)
<AVERAGE-NET-ASSETS> 84,330,562
<PER-SHARE-NAV-BEGIN> 11.46
<PER-SHARE-NII> 0.58
<PER-SHARE-GAIN-APPREC> 0.21
<PER-SHARE-DIVIDEND> (0.56)
<PER-SHARE-DISTRIBUTIONS> (0.25)
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 11.44
<EXPENSE-RATIO> 0.81
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
MORGAN STANLEY DEAN WITTER VARIABLE INVESTMENT SERIES - MONEY MARKET
</LEGEND>
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> DEC-31-1999
<PERIOD-END> DEC-31-1999
<INVESTMENTS-AT-COST> 435,151,748
<INVESTMENTS-AT-VALUE> 435,151,748
<RECEIVABLES> 1,538,881
<ASSETS-OTHER> 3,770
<OTHER-ITEMS-ASSETS> 26,264
<TOTAL-ASSETS> 436,720,663
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> (1,077,552)
<TOTAL-LIABILITIES> (1,077,552)
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 435,642,922
<SHARES-COMMON-STOCK> 435,642,922
<SHARES-COMMON-PRIOR> 442,034,462
<ACCUMULATED-NII-CURRENT> 189
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 0
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 0
<NET-ASSETS> 435,643,111
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 22,650,441
<OTHER-INCOME> 0
<EXPENSES-NET> (2,248,395)
<NET-INVESTMENT-INCOME> 20,402,046
<REALIZED-GAINS-CURRENT> 1,751
<APPREC-INCREASE-CURRENT> 0
<NET-CHANGE-FROM-OPS> 20,403,797
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (20,401,879)
<DISTRIBUTIONS-OF-GAINS> (1,751)
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 560,245,244
<NUMBER-OF-SHARES-REDEEMED> (587,040,414)
<SHARES-REINVESTED> 20,403,630
<NET-CHANGE-IN-ASSETS> (6,391,450)
<ACCUMULATED-NII-PRIOR> 22
<ACCUMULATED-GAINS-PRIOR> 0
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> (2,177,536)
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> (2,248,395)
<AVERAGE-NET-ASSETS> 435,507,178
<PER-SHARE-NAV-BEGIN> 1.00
<PER-SHARE-NII> 0.047
<PER-SHARE-GAIN-APPREC> 0
<PER-SHARE-DIVIDEND> (0.047)
<PER-SHARE-DISTRIBUTIONS> 0
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 1.00
<EXPENSE-RATIO> 0.52
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
MORGAN STANLEY DEAN WITTER VARIABLE INVESTMENT SERIES - QUALITY INCOME PLUS
</LEGEND>
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> DEC-31-1999
<PERIOD-END> DEC-31-1999
<INVESTMENTS-AT-COST> 471,577,312
<INVESTMENTS-AT-VALUE> 453,582,261
<RECEIVABLES> 7,754,622
<ASSETS-OTHER> 5,356
<OTHER-ITEMS-ASSETS> 61,775
<TOTAL-ASSETS> 461,404,014
<PAYABLE-FOR-SECURITIES> (4,899,896)
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> (372,267)
<TOTAL-LIABILITIES> (5,272,163)
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 502,150,505
<SHARES-COMMON-STOCK> 46,275,518
<SHARES-COMMON-PRIOR> 49,794,001
<ACCUMULATED-NII-CURRENT> 47,349
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> (28,070,952)
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> (17,995,051)
<NET-ASSETS> 456,131,851
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 35,251,264
<OTHER-INCOME> 0
<EXPENSES-NET> (2,647,992)
<NET-INVESTMENT-INCOME> 32,603,272
<REALIZED-GAINS-CURRENT> (11,840,632)
<APPREC-INCREASE-CURRENT> (43,753,636)
<NET-CHANGE-FROM-OPS> (22,990,996)
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (32,603,082)
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 5,941,824
<NUMBER-OF-SHARES-REDEEMED> (12,626,740)
<SHARES-REINVESTED> 3,166,433
<NET-CHANGE-IN-ASSETS> (91,450,930)
<ACCUMULATED-NII-PRIOR> (300)
<ACCUMULATED-GAINS-PRIOR> (16,182,861)
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> (2,519,733)
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> (2,647,992)
<AVERAGE-NET-ASSETS> 505,380,722
<PER-SHARE-NAV-BEGIN> 11.00
<PER-SHARE-NII> 0.67
<PER-SHARE-GAIN-APPREC> (1.14)
<PER-SHARE-DIVIDEND> (0.67)
<PER-SHARE-DISTRIBUTIONS> 0
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 9.86
<EXPENSE-RATIO> 0.52
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
MORGAN STANLEY DEAN WITTER VARIABLE INVESTMENT SERIES - STRATEGIST
</LEGEND>
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> DEC-31-1999
<PERIOD-END> DEC-31-1999
<INVESTMENTS-AT-COST> 556,556,940
<INVESTMENTS-AT-VALUE> 727,003,522
<RECEIVABLES> 3,332,351
<ASSETS-OTHER> 7,731
<OTHER-ITEMS-ASSETS> 48,473
<TOTAL-ASSETS> 730,392,077
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> (691,401)
<TOTAL-LIABILITIES> (691,401)
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 482,451,455
<SHARES-COMMON-STOCK> 38,207,752
<SHARES-COMMON-PRIOR> 38,098,404
<ACCUMULATED-NII-CURRENT> 36
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 76,802,603
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 170,446,582
<NET-ASSETS> 729,700,676
<DIVIDEND-INCOME> 4,109,970
<INTEREST-INCOME> 14,632,265
<OTHER-INCOME> 0
<EXPENSES-NET> (3,515,039)
<NET-INVESTMENT-INCOME> 15,227,196
<REALIZED-GAINS-CURRENT> 83,843,891
<APPREC-INCREASE-CURRENT> 10,097,511
<NET-CHANGE-FROM-OPS> 109,168,598
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (15,227,618)
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 6,274,928
<NUMBER-OF-SHARES-REDEEMED> (7,016,894)
<SHARES-REINVESTED> 851,314
<NET-CHANGE-IN-ASSETS> 95,766,396
<ACCUMULATED-NII-PRIOR> 458
<ACCUMULATED-GAINS-PRIOR> (7,041,288)
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> (3,399,095)
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> (3,515,039)
<AVERAGE-NET-ASSETS> 679,818,946
<PER-SHARE-NAV-BEGIN> 16.64
<PER-SHARE-NII> 0.40
<PER-SHARE-GAIN-APPREC> 2.46
<PER-SHARE-DIVIDEND> (0.40)
<PER-SHARE-DISTRIBUTIONS> 0
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 19.10
<EXPENSE-RATIO> 0.52
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
MSDW VARIABLE INVESTMENT SERIES - CAPITAL GROWTH
</LEGEND>
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> DECEMBER 31, 1999
<PERIOD-END> DECEMBER 31, 1999
<INVESTMENTS-AT-COST> 134,054,995
<INVESTMENTS-AT-VALUE> 171,210,846
<RECEIVABLES> 129,932
<ASSETS-OTHER> 94,871
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 171,435,649
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> (184,233)
<TOTAL-LIABILITIES> (184,233)
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 103,542,597
<SHARES-COMMON-STOCK> 7,216,296
<SHARES-COMMON-PRIOR> 6,806,997
<ACCUMULATED-NII-CURRENT> 31,127
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 30,521,841
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 37,155,851
<NET-ASSETS> 171,251,416
<DIVIDEND-INCOME> 737,148
<INTEREST-INCOME> 316,122
<OTHER-INCOME> 0
<EXPENSES-NET> (1,021,719)
<NET-INVESTMENT-INCOME> 31,551
<REALIZED-GAINS-CURRENT> 34,213,226
<APPREC-INCREASE-CURRENT> 8,664,948
<NET-CHANGE-FROM-OPS> 42,909,725
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 0
<DISTRIBUTIONS-OF-GAINS> (17,791,828)
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 1,226,447
<NUMBER-OF-SHARES-REDEEMED> (1,746,710)
<SHARES-REINVESTED> 929,562
<NET-CHANGE-IN-ASSETS> 32,648,306
<ACCUMULATED-NII-PRIOR> (424)
<ACCUMULATED-GAINS-PRIOR> 14,067,938
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> (922,721)
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> (1,021,719)
<AVERAGE-NET-ASSETS> 141,957,023
<PER-SHARE-NAV-BEGIN> 20.36
<PER-SHARE-NII> 0.00
<PER-SHARE-GAIN-APPREC> 6.12
<PER-SHARE-DIVIDEND> 0.00
<PER-SHARE-DISTRIBUTIONS> (2.75)
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 23.73
<EXPENSE-RATIO> 0.72%
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
MSDW VARIABLE INVESTMENT SERIES - DIVIDEND GROWTH
</LEGEND>
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> DECEMBER 31, 1999
<PERIOD-END> DECEMBER 31, 1999
<INVESTMENTS-AT-COST> 2,132,093,174
<INVESTMENTS-AT-VALUE> 2,032,220,460
<RECEIVABLES> 3,559,609
<ASSETS-OTHER> 44,917
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 2,035,824,986
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> (2,011,059)
<TOTAL-LIABILITIES> (2,011,059)
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 1,797,142,512
<SHARES-COMMON-STOCK> 111,002,887
<SHARES-COMMON-PRIOR> 101,647,547
<ACCUMULATED-NII-CURRENT> 112
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 336,544,017
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> (99,872,714)
<NET-ASSETS> 2,033,813,927
<DIVIDEND-INCOME> 51,906,938
<INTEREST-INCOME> 1,620,114
<OTHER-INCOME> 0
<EXPENSES-NET> 11,933,111
<NET-INVESTMENT-INCOME> 41,593,941
<REALIZED-GAINS-CURRENT> 346,534,889
<APPREC-INCREASE-CURRENT> (441,379,064)
<NET-CHANGE-FROM-OPS> (53,250,234)
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (41,593,983)
<DISTRIBUTIONS-OF-GAINS> (329,147,530)
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 13,098,987
<NUMBER-OF-SHARES-REDEEMED> (21,694,034)
<SHARES-REINVESTED> 17,950,387
<NET-CHANGE-IN-ASSETS> (216,112,852)
<ACCUMULATED-NII-PRIOR> 154
<ACCUMULATED-GAINS-PRIOR> 319,156,658
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> (11,638,694)
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> (11,933,111)
<AVERAGE-NET-ASSETS> 2,280,842,822
<PER-SHARE-NAV-BEGIN> 22.13
<PER-SHARE-NII> 0.39
<PER-SHARE-GAIN-APPREC> (0.55)
<PER-SHARE-DIVIDEND> (0.39)
<PER-SHARE-DISTRIBUTIONS> (3.26)
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 18.32
<EXPENSE-RATIO> 0.52%
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
MSDW VARIABLE INVESTMENT SERIES-EUROPEAN GROWTH
</LEGEND>
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> DECEMBER 31, 1999
<PERIOD-END> DECEMBER 31, 1999
<INVESTMENTS-AT-COST> 405,272,942
<INVESTMENTS-AT-VALUE> 577,990,368
<RECEIVABLES> 2,173,022
<ASSETS-OTHER> 150,509
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 580,313,899
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> (609,132)
<TOTAL-LIABILITIES> (609,132)
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 318,747,452
<SHARES-COMMON-STOCK> 18,423,170
<SHARES-COMMON-PRIOR> 18,785,057
<ACCUMULATED-NII-CURRENT> 3,279,390
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 84,991,832
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 172,686,093
<NET-ASSETS> 579,704,767
<DIVIDEND-INCOME> 8,803,062
<INTEREST-INCOME> 783,163
<OTHER-INCOME> 0
<EXPENSES-NET> (5,229,570)
<NET-INVESTMENT-INCOME> 4,356,655
<REALIZED-GAINS-CURRENT> 89,014,598
<APPREC-INCREASE-CURRENT> 39,368,603
<NET-CHANGE-FROM-OPS> 132,739,856
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (3,407,759)
<DISTRIBUTIONS-OF-GAINS> (47,147,183)
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 5,542,879
<NUMBER-OF-SHARES-REDEEMED> (7,927,773)
<SHARES-REINVESTED> 2,023,007
<NET-CHANGE-IN-ASSETS> 69,067,170
<ACCUMULATED-NII-PRIOR> 3,134,104
<ACCUMULATED-GAINS-PRIOR> 43,112,022
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> (4,749,793)
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> (5,229,570)
<AVERAGE-NET-ASSETS> 500,475,265
<PER-SHARE-NAV-BEGIN> 27.18
<PER-SHARE-NII> 0.25
<PER-SHARE-GAIN-APPREC> 6.91
<PER-SHARE-DIVIDEND> (0.19)
<PER-SHARE-DISTRIBUTIONS> (2.68)
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 31.47
<EXPENSE-RATIO> 1.04%
</TABLE>
To the Shareholders and Trustees of
Morgan Stanley Dean Witter Variable Investment Series
(2)
Report of Independent Accountants
To the Shareholders and Trustees of
Morgan Stanley Dean Witter Variable Investment Series
In planning and performing our audit of the financial statements
of the Money Market Portfolio, the Short Term Bond Portfolio,
the Quality Income Plus Portfolio, the High Yield Portfolio, the
Utilities Portfolio, the Income Builder Portfolio, the Dividend
Growth Portfolio, the Capital Growth Portfolio, the Global
Dividend Growth Portfolio, the European Growth Portfolio, the
Pacific Growth Portfolio, the Equity Portfolio, the S&P 500
Index Portfolio, the Competitive Edge "Best Ideas" Portfolio,
the Aggressive Equity Portfolio and the Strategist Portfolio
(constituting the Morgan Stanley Dean Witter Variable Investment
Series, hereafter referred to as the "Fund") for the year ended
December 31, 1999, we considered its internal control, including
control activities for safeguarding securities, in order to
determine our auditing procedures for the purpose of expressing
our opinion on the financial statements and to comply with the
requirements of Form N-SAR, not to provide assurance on internal
control.
The management of the Fund is responsible for establishing and
maintaining internal control. In fulfilling this
responsibility, estimates and judgments by management are
required to assess the expected benefits and related costs of
controls. Generally, controls that are relevant to an audit
pertain to the entity's objective of preparing financial
statements for external purposes that are fairly presented in
conformity with generally accepted accounting principles. Those
controls include the safeguarding of assets against unauthorized
acquisition, use or disposition.
Because of inherent limitations in internal control, errors or
fraud may occur and not be detected. Also, projection of any
evaluation of internal control to future periods is subject to
the risk that controls may become inadequate because of changes
in conditions or that the effectiveness of their design and
operation may deteriorate.
Our consideration of internal control would not necessarily
disclose all matters in internal control that might be material
weaknesses under standards established by the American Institute
of Certified Public Accountants. A material weakness is a
condition in which the design or operation of one or more of the
internal control components does not reduce to a relatively low
level the risk that misstatements caused by error or fraud in
amounts that would be material in relation to the financial
statements being audited may occur and not be detected within a
timely period by employees in the normal course of performing
their assigned functions. However, we noted no matters
involving internal control and its operation, including controls
for safeguarding securities, that we consider to be material
weaknesses as defined above as of December 31, 1999.
This report is intended solely for the information and use of
the Trustees, management and the Securities and Exchange
Commission and is not intended to be and should not be used by
anyone other than these specified parties.
February 18, 2000
EXHIBIT 77(0) Morgan Stanley Dean Witter Variable Investment
Series 10f-3 Transactions For Quarters Ended October 20,
1999- December 31, 1999 TOTAL ISSUED SECURITY DATE PRICE
SHARES % OF PRINCIPAL PURCHASED PURCHASED SHARES PURCHASED
ASSETS AMOUNT BY FUND BROKER(S) Aggressive Equity Series
Agile Software Inc. 08/19/99 $ 25.00 100 0.034% $
63,000,000.00 0.003% Deutsche Banc Alex Brown Cacheflow Inc.
11/18/99 $ 24.00 100 0.012% $ 120,000,000.00 0.002% Goldman
Sachs Entercom Communications 09/30/99 $ 36.00 400 0.152% $
288,000,000.00 0.005% Credit Suisse First Boston Extreme
Networks Inc. 10/19/99 $ 77.00 170 0.120% $ 500,500,000.00
0.003% Thomas Weisel Partners Freemarkets Inc. 12/09/99 $
48.00 100 0.016% $ 172,800,000.00 0.003% Goldman Sachs
Genenech Inc. 07/20/99 $ 97.00 200 0.420% $1,940,000,000.00
0.001% JP Morgan Martha Stewart Living 11/26/99 $ 18.00 200
0.034% $ 129,600,000.00 0.003% Donaldson, Lufkin & Jenrette
Metasolv Software 11/17/99 $ 19.00 100 0.000% $
95,000,000.00 0.002% Soundview Sapient Corporation 11/15/99
$ 78.00 500 0.234% $ 273,000,000.00 0.014% Goldman Sachs
United Pan-European Comm. 11/26/99 $ 64.68 100 0.059% $
873,180,000.00 0.001% Goldman Sachs Veritas Software Inc.
08/09/99 $ 49.81 280 0.246% $ 448,308,000.00 0.003% Credit
Suisse First Boston Vignette Corporation 12/09/99 $139.88
200 0.108% $ 405,637,500.00 0.007 Piper Jaffray Capital
Growth Series Advanced Digital Information 09/23/99 $ 28.63
18,000 0.385% $ 143,125,000.00 0.360% Donaldson, Lufkin &
Jenrette Cox Comminications 09/19/99 $ 34.69 25,000 0.645% $
350,343,750.00 0.248% Merrill Lynch Genenech Inc. 07/20/99 $
97.00 9,600 0.643% $1,940,000,000.00 0.048% JP Morgan
Insight Communications 07/21/99 $ 24.50 11,200 0.194% $
563,500,000.00 0.049% Donaldson Lufkin & Jenrette Martha
Stewart Living 11/26/99 $ 18.00 2,500 0.026% $
129,600,000.00 0.036% Donaldson, Lufkin & Jenrette Metasolv
Software 11/17/99 $ 19.00 600 0.001% $ 95,000,000.00 0.012%
Soundview Equity Series Agile Software Inc. 08/19/99 $ 25.00
8,000 0.012% $ 63,000,000.00 0.267% Deutsche Banc Alex Brown
Extreme Networks Inc. 10/19/99 $ 77.00 19,500 0.105% $
500,500,000.00 0.302% Thomas Weisel Partners Freemarkets
Inc. 12/09/99 $ 48.00 6,000 0.015% $ 172,800,000.00 0.167%
Goldman Sac Sapient Corporation 11/15/99 $ 78.00 35,000
0.162% $ 273,000,000.00 1.000% Goldman Sac United Pan-
European Comm. 11/26/99 $ 64.68 20,400 0.092% $
873,180,000.00 0.151% Goldman Sachs Vignette Corporation
12/09/99 $139.88 27,200 0.201% $ 405,637,500.00 0.938% Piper
Jaffray High Yield Series Worldwide Fiber Inc. 07/23/99
$100.00 1,800,000 0.530% $ 500,000,000.00 0.360% Lehman
Brothers Growth Fund UPS Inc. 11/09/99 $ 50.00 10,300 0.347%
$5,470,000,000.00 0.009% Goldman Sachs Pacific Growth Series
Cable Communications 11/18/99 $ 27.00 3,600 0.080% $
450,000,000.00 0.020% Lehman Brothers China Telecom 10/28/99
$ 24.10* 114,000 0.380% $1,740,000,000.00 0.020% Goldman
Sachs Gas Authority of India LTD 11/05/99 $ 9.67 20,000
0.194% $ 2,173,033.00 0.089% Jardine Fleming Hyundai Motor
GDR 09/16/99 $ 10.92 52,000 0.600% $ 50,000,000.00 0.110%
Credit Suisse First Boston ICIC Limited 09/22/99 $ 9.80
5,000 0.060% $ 274,000,000.00 0.790% Merrill Lynch Pohang
Iron & Steel 07/14/99 $ 32.75 7,200 0.400% $ 1,011,116.95
0.149% Salomon Brothers PT Indafood Sukses Mamkur 07/16/99
8300** 56,500 0.080% $ 290,000,000.00 0.025% Credit Suisse
First Boston Quality Series Avon 11/04/99 $ 99.666 3,500
0.722% $ 298,998,000.00 1.167% Salomon Brothers Chevron
10/06/99 $ 99.633 10,000 0.204% $ 498,165,000.00 0.200%
Lehman Brothers Strategist Series Electronic Data Systems
10/06/99 $ 99.50 2,000,000 0.300% $ 300,000,000.00 0.670%
Merrill Lynch Ford Motor Credit 10/21/99 $ 99.81 4,000,000
0.200% $5,000,000,000.00 0.080% Bear Stearns GMAC 12/08/99 $
99.86 1,000,000 0.150% $ 500,000,000.00 0.200% Merrill Lynch
Utilities Series * Price listed in Hong Kong dollars **Price
In Rupees
EXHIBIT
MORGAN STANLEY DEAN WITTER VARIABLE INVESTMENT SERIES
Sub-Item
77P Information Required to be Filed Pursuant to
Existing Exemptive Orders
(A) Statement Pursuant to Exemptive Order (ICA Release
No. 13466)
Pertaining to Amortized Cost Pricing
No action was taken during the period pursuant to
condition 2 (c) of the above-captioned Order.
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
MSDW VARIABLE INVESTMENT SERIES- GLOBAL DIVIDEND GROWTH
</LEGEND>
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> DECEMBER 31, 1999
<PERIOD-END> DECEMBER 31, 1999
<INVESTMENTS-AT-COST> 446,036,550
<INVESTMENTS-AT-VALUE> 505,698,022
<RECEIVABLES> 1,632,354
<ASSETS-OTHER> 119,081
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 507,449,457
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> (519,967)
<TOTAL-LIABILITIES> (519,967)
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 415,510,169
<SHARES-COMMON-STOCK> 35,107,218
<SHARES-COMMON-PRIOR> 35,025,587
<ACCUMULATED-NII-CURRENT> 900,043
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 30,870,449
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 59,648,829
<NET-ASSETS> 506,929,490
<DIVIDEND-INCOME> 12,957,288
<INTEREST-INCOME> 393,946
<OTHER-INCOME> 0
<EXPENSES-NET> (4,049,262)
<NET-INVESTMENT-INCOME> 9,301,972
<REALIZED-GAINS-CURRENT> 42,434,603
<APPREC-INCREASE-CURRENT> 14,999,600
<NET-CHANGE-FROM-OPS> 66,736,175
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (9,852,158)
<DISTRIBUTIONS-OF-GAINS> (35,181,150)
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 3,735,961
<NUMBER-OF-SHARES-REDEEMED> (6,868,373)
<SHARES-REINVESTED> 3,214,043
<NET-CHANGE-IN-ASSETS> 22,701,926
<ACCUMULATED-NII-PRIOR> 520,531
<ACCUMULATED-GAINS-PRIOR> 24,439,258
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> (3,669,864)
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> (4,049,262)
<AVERAGE-NET-ASSETS> 489,315,172
<PER-SHARE-NAV-BEGIN> 13.82
<PER-SHARE-NII> 0.27
<PER-SHARE-GAIN-APPREC> 1.71
<PER-SHARE-DIVIDEND> (0.29)
<PER-SHARE-DISTRIBUTIONS> (1.07)
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 14.44
<EXPENSE-RATIO> 0.83%
</TABLE>
