<PAGE> PAGE 1
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001 C000000 2123921600
002 A000000 TWO WORLD TRADE CENTER
002 B000000 NEW YORK
002 C000000 NY
002 D010000 10048
003 000000 N
004 000000 N
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008 D020001 NY
008 D030001 10048
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011 B000001 8-45262
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011 C020001 NY
011 C030001 10048
012 A000001 MORGAN STANLEY DEAN WITTER TRUST FSB
012 B000001 84-1785
012 C010001 NEW YORK
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012 C030001 07311
013 A000001 PRICEWATERHOUSECOOPERS LLP
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013 B020001 NY
<PAGE> PAGE 2
013 B030001 10036
014 A000001 DEAN WITTER REYNOLDS INC.
014 B000001 8-14172
014 A000002 MORGAN STANLEY & CO. INCORPORATED
014 B000002 8-15869
015 A000001 THE BANK OF NEW YORK
015 B000001 C
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015 E010001 X
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020 A000003 CANTOR FITZGERALD SECURITIES
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020 C000004 96
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020 B000005 13-3299429
020 C000005 89
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020 C000006 82
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020 C000007 82
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020 B000008 94-1671384
020 C000008 77
020 A000009 PRUDENTIAL SECURITIES INC.
020 B000009 22-2347336
020 C000009 72
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020 B000010 13-5674085
020 C000010 67
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<PAGE> PAGE 3
022 B000002 13-5108880
022 C000002 9361388
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022 B000003 56-2058405
022 C000003 2840092
022 D000003 31551
022 A000004 BANCAMERICA ROBERTSON STEPHENS
022 B000004 95-4035346
022 C000004 1304121
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022 C000005 930980
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022 C000006 234008
022 D000006 267468
022 A000007 DONALDSON, LUFKIN & JENRETTE SECURITIES CORP.
022 B000007 13-2741729
022 C000007 179621
022 D000007 141065
022 A000008 MORGAN (J.P.) SECURITIES INC.
022 B000008 13-3224016
022 C000008 288117
022 D000008 30566
022 A000009 CS FIRST BOSTON CORPORATION
022 B000009 13-5659485
022 C000009 167399
022 D000009 32624
022 A000010 CHASE SECURITIES INC.
022 B000010 13-3112953
022 C000010 175679
022 D000010 0
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025 B000002 13-3112953
025 C000002 E
025 D000002 16546
025 A000003 BANK OF NEW YORK (THE)
025 B000003 13-5160382
025 C000003 D
025 D000003 14401
025 A000004 BEAR, STEARNS & CO., INC.
<PAGE> PAGE 4
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<PAGE> PAGE 5
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<PAGE> PAGE 6
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<PAGE> PAGE 7
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<PAGE> PAGE 10
SIGNATURE BARRY FINK
TITLE VICE PRESIDENT
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
MSDW Strategist Fund
Class A
</LEGEND>
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> JUL-31-2000
<PERIOD-END> JAN-31-2000
<INVESTMENTS-AT-COST> 1,711,803,373
<INVESTMENTS-AT-VALUE> 2,207,844,594
<RECEIVABLES> 56,865,818
<ASSETS-OTHER> 129,724
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 2,264,840,136
<PAYABLE-FOR-SECURITIES> (73,308,095)
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> (5,049,740)
<TOTAL-LIABILITIES> (78,357,835)
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 1,572,268,109
<SHARES-COMMON-STOCK> 3,937,390
<SHARES-COMMON-PRIOR> 3,194,851
<ACCUMULATED-NII-CURRENT> 5,088,115
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 113,086,238
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 496,039,839
<NET-ASSETS> 81,311,098
<DIVIDEND-INCOME> 5,561,714
<INTEREST-INCOME> 22,537,367
<OTHER-INCOME> 0
<EXPENSES-NET> (15,353,275)
<NET-INVESTMENT-INCOME> 12,745,806
<REALIZED-GAINS-CURRENT> 171,580,552
<APPREC-INCREASE-CURRENT> 53,241,133
<NET-CHANGE-FROM-OPS> 237,567,491
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (570,492)
<DISTRIBUTIONS-OF-GAINS> (6,239,051)
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 1,113,112
<NUMBER-OF-SHARES-REDEEMED> (391,061)
<SHARES-REINVESTED> 20,488
<NET-CHANGE-IN-ASSETS> 199,428,227
<ACCUMULATED-NII-PRIOR> 2,089,265
<ACCUMULATED-GAINS-PRIOR> 113,231,859
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> (5,467,095)
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> (15,353,275)
<AVERAGE-NET-ASSETS> 72,369,973
<PER-SHARE-NAV-BEGIN> 20.16
<PER-SHARE-NII> 0.19
<PER-SHARE-GAIN-APPREC> 2.21
<PER-SHARE-DIVIDEND> (0.16)
<PER-SHARE-DISTRIBUTIONS> (1.75)
<RETURNS-OF-CAPITAL> 0.00
<PER-SHARE-NAV-END> 20.65
<EXPENSE-RATIO> 0.88
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
MSDW Strategist Fund
Class B
</LEGEND>
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> JUL-31-2000
<PERIOD-END> JAN-31-2000
<INVESTMENTS-AT-COST> 1,711,803,373
<INVESTMENTS-AT-VALUE> 2,207,844,594
<RECEIVABLES> 56,865,818
<ASSETS-OTHER> 129,724
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 2,264,840,136
<PAYABLE-FOR-SECURITIES> (73,308,095)
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> (5,049,740)
<TOTAL-LIABILITIES> (78,357,835)
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 1,572,268,109
<SHARES-COMMON-STOCK> 96,753,458
<SHARES-COMMON-PRIOR> 90,953,201
<ACCUMULATED-NII-CURRENT> 5,088,115
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 113,086,238
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 496,039,839
<NET-ASSETS> 1,998,377,794
<DIVIDEND-INCOME> 5,561,714
<INTEREST-INCOME> 22,537,367
<OTHER-INCOME> 0
<EXPENSES-NET> (15,353,275)
<NET-INVESTMENT-INCOME> 12,745,806
<REALIZED-GAINS-CURRENT> 171,580,552
<APPREC-INCREASE-CURRENT> 53,241,133
<NET-CHANGE-FROM-OPS> 237,567,491
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (8,415,581)
<DISTRIBUTIONS-OF-GAINS> (157,446,517)
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 15,141,502
<NUMBER-OF-SHARES-REDEEMED> (9,718,129)
<SHARES-REINVESTED> 376,884
<NET-CHANGE-IN-ASSETS> 199,428,227
<ACCUMULATED-NII-PRIOR> 2,089,265
<ACCUMULATED-GAINS-PRIOR> 113,231,859
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> (5,467,095)
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> (15,353,275)
<AVERAGE-NET-ASSETS> 1,888,564,425
<PER-SHARE-NAV-BEGIN> 20.16
<PER-SHARE-NII> 0.12
<PER-SHARE-GAIN-APPREC> 2.21
<PER-SHARE-DIVIDEND> (0.09)
<PER-SHARE-DISTRIBUTIONS> (1.75)
<RETURNS-OF-CAPITAL> 0.00
<PER-SHARE-NAV-END> 20.65
<EXPENSE-RATIO> 1.53
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
MSDW Strategist Fund
Class C
</LEGEND>
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> JUL-31-2000
<PERIOD-END> JAN-31-2000
<INVESTMENTS-AT-COST> 1,711,803,373
<INVESTMENTS-AT-VALUE> 2,207,844,594
<RECEIVABLES> 56,865,818
<ASSETS-OTHER> 129,724
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 2,264,840,136
<PAYABLE-FOR-SECURITIES> (73,308,095)
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> (5,049,740)
<TOTAL-LIABILITIES> (78,357,835)
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 1,572,268,109
<SHARES-COMMON-STOCK> 1,252,388
<SHARES-COMMON-PRIOR> 802,959
<ACCUMULATED-NII-CURRENT> 5,088,115
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 113,086,238
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 496,039,839
<NET-ASSETS> 25,784,078
<DIVIDEND-INCOME> 5,561,714
<INTEREST-INCOME> 22,537,367
<OTHER-INCOME> 0
<EXPENSES-NET> (15,353,275)
<NET-INVESTMENT-INCOME> 12,745,806
<REALIZED-GAINS-CURRENT> 171,580,552
<APPREC-INCREASE-CURRENT> 53,241,133
<NET-CHANGE-FROM-OPS> 237,567,491
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (86,163)
<DISTRIBUTIONS-OF-GAINS> (1,738,095)
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 561,206
<NUMBER-OF-SHARES-REDEEMED> (115,941)
<SHARES-REINVESTED> 4,164
<NET-CHANGE-IN-ASSETS> 199,428,227
<ACCUMULATED-NII-PRIOR> 2,089,265
<ACCUMULATED-GAINS-PRIOR> 113,231,859
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> (5,467,095)
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> (15,353,275)
<AVERAGE-NET-ASSETS> 19,865,973
<PER-SHARE-NAV-BEGIN> 20.11
<PER-SHARE-NII> 0.11
<PER-SHARE-GAIN-APPREC> 2.21
<PER-SHARE-DIVIDEND> (0.09)
<PER-SHARE-DISTRIBUTIONS> (1.75)
<RETURNS-OF-CAPITAL> 0.00
<PER-SHARE-NAV-END> 20.59
<EXPENSE-RATIO> 1.63
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
MSDW Strategist Fund
Class D
</LEGEND>
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> JUL-31-2000
<PERIOD-END> JAN-31-2000
<INVESTMENTS-AT-COST> 1,711,803,373
<INVESTMENTS-AT-VALUE> 2,207,844,594
<RECEIVABLES> 56,865,818
<ASSETS-OTHER> 129,724
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 2,264,840,136
<PAYABLE-FOR-SECURITIES> (73,308,095)
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> (5,049,740)
<TOTAL-LIABILITIES> (78,357,835)
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 1,572,268,109
<SHARES-COMMON-STOCK> 3,918,771
<SHARES-COMMON-PRIOR> 3,595,036
<ACCUMULATED-NII-CURRENT> 5,088,115
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 113,086,238
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 496,039,839
<NET-ASSETS> 81,009,331
<DIVIDEND-INCOME> 5,561,714
<INTEREST-INCOME> 22,537,367
<OTHER-INCOME> 0
<EXPENSES-NET> (15,353,275)
<NET-INVESTMENT-INCOME> 12,745,806
<REALIZED-GAINS-CURRENT> 171,580,552
<APPREC-INCREASE-CURRENT> 53,241,133
<NET-CHANGE-FROM-OPS> 237,567,491
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (674,720)
<DISTRIBUTIONS-OF-GAINS> (6,302,510)
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 568,636
<NUMBER-OF-SHARES-REDEEMED> (275,635)
<SHARES-REINVESTED> 30,734
<NET-CHANGE-IN-ASSETS> 199,428,227
<ACCUMULATED-NII-PRIOR> 2,089,265
<ACCUMULATED-GAINS-PRIOR> 113,231,859
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> (5,467,095)
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> (15,353,275)
<AVERAGE-NET-ASSETS> 75,191,958
<PER-SHARE-NAV-BEGIN> 20.18
<PER-SHARE-NII> 0.22
<PER-SHARE-GAIN-APPREC> 2.21
<PER-SHARE-DIVIDEND> (0.19)
<PER-SHARE-DISTRIBUTIONS> (1.75)
<RETURNS-OF-CAPITAL> 0.00
<PER-SHARE-NAV-END> 20.67
<EXPENSE-RATIO> 0.63
</TABLE>
EXHIBIT 77(O) MORGAN STANLEY DEAN WITTER STRATEGIST FUND 10f-
3 transactions for the period September 30, 1999- December
31, 1999 S TOTAL ISSUED/ DATE PRICE SHARES % of PRINCIPAL
PURCHASED SECURITY PURCHASED SHARE PURCHASED Assets AMOUNT
BY FUND BROKER(S) Duke Capital Corp. 09/21/99 $ 99.36
4,000,000 0.200% $ 500,000,000.00 0.800% JP Morgan Ford
Motor Credit 7.375 10/28/99 10/21/99 $ 99.81 4,000,000
0.200% $5,000,000,000.00 0.080% JP morgan
