<PAGE> PAGE 1
000 A000000 06/30/1999
000 C000000 0000314366
000 D000000 N
000 E000000 NF
000 F000000 Y
000 G000000 N
000 H000000 N
000 I000000 6.1
000 J000000 A
001 A000000 MSDW AMERICAN OPPORTUNITIES FUND
001 B000000 811-2978
001 C000000 2123922550
002 A000000 TWO WORLD TRADE CENTER
002 B000000 NEW YORK
002 C000000 NY
002 D010000 10048
003 000000 N
004 000000 N
005 000000 N
006 000000 N
007 A000000 N
007 B000000 0
007 C010100 1
007 C010200 2
007 C010300 3
007 C010400 4
007 C010500 5
007 C010600 6
007 C010700 7
007 C010800 8
007 C010900 9
007 C011000 10
008 A000001 MORGAN STANLEY DEAN WITTER ADVISORS INC.
008 B000001 A
008 C000001 801-42061
008 D010001 NEW YORK
008 D020001 NY
008 D030001 10048
011 A000001 MORGAN STANLEY DEAN WITTER DISTRIBUTORS INC.
011 B000001 8-45262
011 C010001 NEW YORK
011 C020001 NY
011 C030001 10048
012 A000001 MORGAN STANLEY DEAN WITTER TRUST FSB
012 B000001 84-1785
012 C010001 JERSEY CITY
012 C020001 NJ
012 C030001 07311
013 A000001 PRICEWATERHOUSECOOPERS LLP
013 B010001 NEW YORK
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
015 C010001 NEW YORK
015 C020001 NY
015 C030001 10286
015 E010001 X
018 000000 Y
019 A000000 Y
019 B000000 127
019 C000000 MSDW-FUNDS
020 A000001 MORGAN STANLEY & CO. INCORPORATED
020 B000001 13-2655998
020 C000001 2881
020 A000002 MERRILL LYNCH, PIERCE, FENNER & SMITH INC.
020 B000002 13-5674085
020 C000002 1887
020 A000003 LEHMAN BROTHERS INC.
020 B000003 13-2518466
020 C000003 1391
020 A000004 SMITH BARNEY SHEARSON INC.
020 B000004 13-1912900
020 C000004 1232
020 A000005 GOLDMAN SACHS & CO.
020 B000005 13-5108880
020 C000005 1222
020 A000006 SCHROEDER WERTHEIM & CO.
020 B000006 13-2697272
020 C000006 956
020 A000007 DEUTSCHE BANK SECURITIES CORP.
020 B000007 13-2730828
020 C000007 921
020 A000008 DONALD, LUFKIN & JENRETTE
020 B000008 N/A
020 C000008 854
020 A000009 CS FIRST BOSTON CORPORATION
020 B000009 13-5659485
020 C000009 636
020 A000010 PRUDENTIAL SECURITIES INC.
020 B000010 22-2347336
020 C000010 610
021 000000 20436
022 A000001 CS FIRST BOSTON CORP.
022 B000001 13-5659485
022 C000001 14433342
022 D000001 67282
022 A000002 CHASE SECURITIES INC.
<PAGE> PAGE 3
022 B000002 13-3112953
022 C000002 14700635
022 D000002 0
022 A000003 LEHMAN BROTHERS INC.
022 B000003 13-2518466
022 C000003 10601588
022 D000003 1032647
022 A000004 BANC OF AMERICA SECURITIES LLC
022 B000004 56-2058405
022 C000004 10478786
022 D000004 127105
022 A000005 MERRILL LYNCH, PIERCE, FENNER & SMITH INC.
022 B000005 13-5674085
022 C000005 9622956
022 D000005 446526
022 A000006 BANC ONE CAPITAL MARKETS, INC.
022 B000006 36-3595942
022 C000006 9691666
022 D000006 0
022 A000007 MORGAN (J.P.) SECURITIES INC.
022 B000007 13-3224016
022 C000007 8983444
022 D000007 50564
022 A000008 SMITH BARNEY SHEARSON INC.
022 B000008 13-1912900
022 C000008 4969200
022 D000008 530313
022 A000009 GOLDMAN, SACHS & CO.
022 B000009 13-5108880
022 C000009 4690620
022 D000009 590283
022 A000010 DEUTSCHE BANK SECURITIES CORP.
022 B000010 13-2730828
022 C000010 3761520
022 D000010 18367
023 C000000 95809181
023 D000000 4992453
024 000000 Y
025 A000001 GOLDMAN, SACHS & CO.
025 B000001 13-5108880
025 C000001 E
025 D000001 2312
025 A000002 MERRILL LYNCH, PIERCE, FENNER & SMITH INC.
025 B000002 13-5674085
025 C000002 E
025 D000002 3198
025 A000003 BANC OF AMERICA SECURITIES LLC
025 B000003 56-2058405
025 C000003 E
025 D000003 293
025 A000004 CHASE SECURITIES INC.
<PAGE> PAGE 4
025 B000004 13-3112953
025 C000004 E
025 D000004 77356
025 A000005 MORGAN (J.P.) SECURITIES INC.
025 B000005 13-3224016
025 C000005 E
025 D000005 46365
025 D000006 0
025 D000007 0
025 D000008 0
026 A000000 N
026 B000000 Y
026 C000000 N
026 D000000 Y
026 E000000 Y
026 F000000 N
026 G010000 N
026 G020000 N
026 H000000 N
027 000000 Y
028 A010000 308483
028 A020000 0
028 A030000 0
028 A040000 105136
028 B010000 293698
028 B020000 0
028 B030000 0
028 B040000 102253
028 C010000 324887
028 C020000 0
028 C030000 0
028 C040000 128591
028 D010000 333026
028 D020000 0
028 D030000 0
028 D040000 121246
028 E010000 229872
028 E020000 0
028 E030000 0
028 E040000 99458
028 F010000 188992
028 F020000 218754
028 F030000 0
028 F040000 101629
028 G010000 1678958
028 G020000 218754
028 G030000 0
028 G040000 658313
028 H000000 1607985
029 000000 Y
030 A000000 625
<PAGE> PAGE 5
030 B000000 5.25
030 C000000 0.00
031 A000000 0
031 B000000 335
032 000000 0
033 000000 959
034 000000 Y
035 000000 3499
036 A000000 N
036 B000000 0
037 000000 N
038 000000 0
039 000000 N
040 000000 Y
041 000000 Y
042 A000000 0
042 B000000 0
042 C000000 100
042 D000000 0
042 E000000 0
042 F000000 0
042 G000000 0
042 H000000 0
043 000000 25147
044 000000 0
045 000000 Y
046 000000 N
047 000000 Y
048 000000 0.000
048 A010000 500000
048 A020000 0.625
048 B010000 0
048 B020000 0.000
048 C010000 0
048 C020000 0.000
048 D010000 0
048 D020000 0.000
048 E010000 0
048 E020000 0.000
048 F010000 0
048 F020000 0.000
048 G010000 0
048 G020000 0.000
048 H010000 0
048 H020000 0.000
048 I010000 0
048 I020000 0.000
048 J010000 0
048 J020000 0.000
048 K010000 500000
048 K020000 0.600
<PAGE> PAGE 6
049 000000 N
050 000000 N
051 000000 N
052 000000 N
053 A000000 N
054 A000000 Y
054 B000000 Y
054 C000000 Y
054 D000000 N
054 E000000 N
054 F000000 N
054 G000000 Y
054 H000000 Y
054 I000000 N
054 J000000 Y
054 K000000 N
054 L000000 Y
054 M000000 Y
054 N000000 N
054 O000000 Y
055 A000000 N
055 B000000 N
056 000000 Y
057 000000 N
058 A000000 N
059 000000 Y
060 A000000 Y
060 B000000 Y
061 000000 1000
062 A000000 N
062 B000000 0.0
062 C000000 0.0
062 D000000 0.0
062 E000000 0.0
062 F000000 0.0
062 G000000 0.0
062 H000000 0.0
062 I000000 0.0
062 J000000 0.0
062 K000000 0.0
062 L000000 0.0
062 M000000 0.0
062 N000000 0.0
062 O000000 0.0
062 P000000 0.0
062 Q000000 0.0
062 R000000 0.0
063 A000000 0
063 B000000 0.0
066 A000000 Y
066 B000000 N
<PAGE> PAGE 7
066 C000000 N
066 D000000 Y
066 E000000 N
066 F000000 N
066 G000000 N
067 000000 N
068 A000000 N
068 B000000 N
069 000000 N
070 A010000 Y
070 A020000 Y
070 B010000 Y
070 B020000 N
070 C010000 Y
070 C020000 N
070 D010000 Y
070 D020000 N
070 E010000 Y
070 E020000 N
070 F010000 Y
070 F020000 Y
070 G010000 Y
070 G020000 N
070 H010000 Y
070 H020000 N
070 I010000 N
070 I020000 N
070 J010000 Y
070 J020000 N
070 K010000 Y
070 K020000 N
070 L010000 Y
070 L020000 Y
070 M010000 Y
070 M020000 Y
070 N010000 Y
070 N020000 N
070 O010000 N
070 O020000 N
070 P010000 Y
070 P020000 Y
070 Q010000 N
070 Q020000 N
070 R010000 N
070 R020000 N
071 A000000 14775876
071 B000000 14356163
071 C000000 6348063
071 D000000 226
072 A000000 6
072 B000000 19591
<PAGE> PAGE 8
072 C000000 23772
072 D000000 0
072 E000000 0
072 F000000 16719
072 G000000 0
072 H000000 0
072 I000000 3449
072 J000000 214
072 K000000 0
072 L000000 177
072 M000000 9
072 N000000 526
072 O000000 0
072 P000000 0
072 Q000000 0
072 R000000 21
072 S000000 18
072 T000000 25147
072 U000000 0
072 V000000 0
072 W000000 34
072 X000000 46314
072 Y000000 0
072 Z000000 -2951
072AA000000 1881562
072BB000000 663568
072CC010000 0
072CC020000 435691
072DD010000 0
072DD020000 0
072EE000000 231579
073 A010000 0.0000
073 A020000 0.0000
073 B000000 1.0570
073 C000000 0.0000
074 A000000 2684
074 B000000 13585
074 C000000 750580
074 D000000 0
074 E000000 0
074 F000000 7280339
074 G000000 0
074 H000000 0
074 I000000 0
074 J000000 272151
074 K000000 0
074 L000000 23944
074 M000000 474
074 N000000 8343757
074 O000000 217251
074 P000000 29188
<PAGE> PAGE 9
074 Q000000 0
074 R010000 0
074 R020000 0
074 R030000 0
074 R040000 31304
074 S000000 0
074 T000000 8066014
074 U010000 216412
074 U020000 9342
074 V010000 0.00
074 V020000 0.00
074 W000000 0.0000
074 X000000 508549
074 Y000000 0
075 A000000 0
075 B000000 7241730
076 000000 0.00
077 A000000 Y
077 B000000 N
077 C000000 N
077 D000000 N
077 E000000 N
077 F000000 N
077 G000000 N
077 H000000 N
077 I000000 N
077 J000000 N
077 K000000 N
077 L000000 N
077 M000000 N
077 N000000 N
077 O000000 Y
077 P000000 N
077 Q010000 N
077 Q020000 N
077 Q030000 N
078 000000 N
080 C000000 0
081 B000000 0
082 B000000 0
083 B000000 0
084 B000000 0
086 A010000 0
086 A020000 0
086 B010000 0
086 B020000 0
086 C010000 0
086 C020000 0
086 D010000 0
086 D020000 0
086 E010000 0
<PAGE> PAGE 10
086 E020000 0
086 F010000 0
086 F020000 0
SIGNATURE BARRY FINK
TITLE VICE PRESIDENT
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000314366
<NAME> MSDW AMERICAN OPPORTUNITIES FUND-CLASS A
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> DEC-31-1999
<PERIOD-END> JUN-30-1999
<INVESTMENTS-AT-COST> 7,331,362,100
<INVESTMENTS-AT-VALUE> 8,044,504,364
<RECEIVABLES> 296,095,190
<ASSETS-OTHER> 473,627
<OTHER-ITEMS-ASSETS> 2,683,596
<TOTAL-ASSETS> 8,343,756,777
<PAYABLE-FOR-SECURITIES> (238,166,970)
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> (39,575,367)
<TOTAL-LIABILITIES> (277,742,337)
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 6,261,250,821
<SHARES-COMMON-STOCK> 4,929,037
<SHARES-COMMON-PRIOR> 3,524,872
<ACCUMULATED-NII-CURRENT> (2,999,808)
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 1,121,635,556
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 686,127,871
<NET-ASSETS> 178,227,587
<DIVIDEND-INCOME> 23,772,367
<INTEREST-INCOME> 19,591,231
<OTHER-INCOME> 0
<EXPENSES-NET> (46,314,412)
<NET-INVESTMENT-INCOME> (2,950,814)
<REALIZED-GAINS-CURRENT> 1,217,994,116
<APPREC-INCREASE-CURRENT> (435,690,666)
<NET-CHANGE-FROM-OPS> 779,352,636
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 0
<DISTRIBUTIONS-OF-GAINS> (5,194,917)
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 1,998,714
<NUMBER-OF-SHARES-REDEEMED> (759,649)
<SHARES-REINVESTED> 143,798
<NET-CHANGE-IN-ASSETS> 2,002,756,451
<ACCUMULATED-NII-PRIOR> (44,936)
<ACCUMULATED-GAINS-PRIOR> 135,824,142
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> (16,718,873)
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> (46,314,412)
<AVERAGE-NET-ASSETS> 156,090,862
<PER-SHARE-NAV-BEGIN> 33.16
<PER-SHARE-NII> 0.08
<PER-SHARE-GAIN-APPREC> 3.98
<PER-SHARE-DIVIDEND> 0
<PER-SHARE-DISTRIBUTIONS> (1.06)
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 36.16
<EXPENSE-RATIO> 0.77
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000314366
<NAME> MSDW AMERICAN OPPORTUNITIES FUND-CLASS B
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> DEC-31-1999
<PERIOD-END> JUN-30-1999
<INVESTMENTS-AT-COST> 7,331,362,100
<INVESTMENTS-AT-VALUE> 8,044,504,364
<RECEIVABLES> 296,095,190
<ASSETS-OTHER> 473,627
<OTHER-ITEMS-ASSETS> 2,683,596
<TOTAL-ASSETS> 8,343,756,777
<PAYABLE-FOR-SECURITIES> (238,166,970)
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> (39,575,367)
<TOTAL-LIABILITIES> (277,742,337)
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 6,261,250,821
<SHARES-COMMON-STOCK> 211,483,240
<SHARES-COMMON-PRIOR> 175,055,357
<ACCUMULATED-NII-CURRENT> (2,999,808)
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 1,121,635,556
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 686,127,871
<NET-ASSETS> 7,551,414,492
<DIVIDEND-INCOME> 23,772,367
<INTEREST-INCOME> 19,591,231
<OTHER-INCOME> 0
<EXPENSES-NET> (46,314,412)
<NET-INVESTMENT-INCOME> (2,950,814)
<REALIZED-GAINS-CURRENT> 1,217,994,116
<APPREC-INCREASE-CURRENT> (435,690,666)
<NET-CHANGE-FROM-OPS> 779,352,636
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 0
<DISTRIBUTIONS-OF-GAINS> (216,781,565)
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 41,181,265
<NUMBER-OF-SHARES-REDEEMED> (16,638,489)
<SHARES-REINVESTED> 5,845,538
<NET-CHANGE-IN-ASSETS> 2,002,756,451
<ACCUMULATED-NII-PRIOR> (44,936)
<ACCUMULATED-GAINS-PRIOR> 135,824,142
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> (16,718,873)
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> (46,314,412)
<AVERAGE-NET-ASSETS> 6,806,019,475
<PER-SHARE-NAV-BEGIN> 32.85
<PER-SHARE-NII> (0.02)
<PER-SHARE-GAIN-APPREC> 3.94
<PER-SHARE-DIVIDEND> 0
<PER-SHARE-DISTRIBUTIONS> (1.06)
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 35.71
<EXPENSE-RATIO> 1.32
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000314366
<NAME> MSDW AMERICAN OPPORTUNITIES FUND-CLASS C
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> DEC-31-1999
<PERIOD-END> JUN-30-1999
<INVESTMENTS-AT-COST> 7,331,362,100
<INVESTMENTS-AT-VALUE> 8,044,504,364
<RECEIVABLES> 296,095,190
<ASSETS-OTHER> 473,627
<OTHER-ITEMS-ASSETS> 2,683,596
<TOTAL-ASSETS> 8,343,756,777
<PAYABLE-FOR-SECURITIES> (238,166,970)
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> (39,575,367)
<TOTAL-LIABILITIES> (277,742,337)
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 6,261,250,821
<SHARES-COMMON-STOCK> 3,944,913
<SHARES-COMMON-PRIOR> 1,858,983
<ACCUMULATED-NII-CURRENT> (2,999,808)
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 1,121,635,556
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 686,127,871
<NET-ASSETS> 140,179,220
<DIVIDEND-INCOME> 23,772,367
<INTEREST-INCOME> 19,591,231
<OTHER-INCOME> 0
<EXPENSES-NET> (46,314,412)
<NET-INVESTMENT-INCOME> (2,950,814)
<REALIZED-GAINS-CURRENT> 1,217,994,116
<APPREC-INCREASE-CURRENT> (435,690,666)
<NET-CHANGE-FROM-OPS> 779,352,636
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 0
<DISTRIBUTIONS-OF-GAINS> (3,999,252)
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 2,330,143
<NUMBER-OF-SHARES-REDEEMED> (390,745)
<SHARES-REINVESTED> 110,558
<NET-CHANGE-IN-ASSETS> 2,002,756,451
<ACCUMULATED-NII-PRIOR> (44,936)
<ACCUMULATED-GAINS-PRIOR> 135,824,142
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> (16,718,873)
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> (46,314,412)
<AVERAGE-NET-ASSETS> 103,305,492
<PER-SHARE-NAV-BEGIN> 32.74
<PER-SHARE-NII> (0.06)
<PER-SHARE-GAIN-APPREC> 3.91
<PER-SHARE-DIVIDEND> 0
<PER-SHARE-DISTRIBUTIONS> (1.06)
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 35.53
<EXPENSE-RATIO> 1.59
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000314366
<NAME> MSDW AMERICAN OPPORTUNITIES FUND-CLASS D
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> DEC-31-1999
<PERIOD-END> JUN-30-1999
<INVESTMENTS-AT-COST> 7,331,362,100
<INVESTMENTS-AT-VALUE> 8,044,504,364
<RECEIVABLES> 296,095,190
<ASSETS-OTHER> 473,627
<OTHER-ITEMS-ASSETS> 2,683,596
<TOTAL-ASSETS> 8,343,756,777
<PAYABLE-FOR-SECURITIES> (238,166,970)
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> (39,575,367)
<TOTAL-LIABILITIES> (277,742,337)
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 6,261,250,821
<SHARES-COMMON-STOCK> 5,396,732
<SHARES-COMMON-PRIOR> 4,053,894
<ACCUMULATED-NII-CURRENT> (2,999,808)
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 1,121,635,556
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 686,127,871
<NET-ASSETS> 196,193,141
<DIVIDEND-INCOME> 23,772,367
<INTEREST-INCOME> 19,591,231
<OTHER-INCOME> 0
<EXPENSES-NET> (46,314,412)
<NET-INVESTMENT-INCOME> (2,950,814)
<REALIZED-GAINS-CURRENT> 1,217,994,116
<APPREC-INCREASE-CURRENT> (435,690,666)
<NET-CHANGE-FROM-OPS> 779,352,636
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 0
<DISTRIBUTIONS-OF-GAINS> (5,602,896)
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 2,001,894
<NUMBER-OF-SHARES-REDEEMED> (811,943)
<SHARES-REINVESTED> 149,836
<NET-CHANGE-IN-ASSETS> 2,002,756,451
<ACCUMULATED-NII-PRIOR> (44,936)
<ACCUMULATED-GAINS-PRIOR> 135,824,142
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> (16,718,873)
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> (46,314,412)
<AVERAGE-NET-ASSETS> 176,314,613
<PER-SHARE-NAV-BEGIN> 33.31
<PER-SHARE-NII> 0.11
<PER-SHARE-GAIN-APPREC> 3.99
<PER-SHARE-DIVIDEND> 0
<PER-SHARE-DISTRIBUTIONS> (1.06)
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 36.35
<EXPENSE-RATIO> 0.59
</TABLE>
<TABLE>
<CAPTION>
EXHIBIT 77(0) Morgan Stanley Dean Witter American Opportunities Fund
10f-3 Transactions
<S> <C> <C> <C> <C> <C> <C> <C>
TOTAL
ISSUED
SECURITY DATE PRICE SHARES % OF PRINCIPAL PURCHASED
PURCHASED SHARES PURCHASED ASSETS AMOUNT BY FUND BROKER(S)
Copper Mountain
Networks, Inc. 5/12/99 $21.00 4,700 .007% $84,000,000 .115% Raymond James
DLJ Direct 5/25/99 $20.00 13,900 .028% $320,000,000 .012% DLJ
Lyondell Chemical 5/11/99 $19.00 450,000 .107 $665,000,000 1.286 JP Morgan
Minimed Inc. 6/24/99 $68.83 41,000 .035% $157,262,500 1.783% Piper Jaffray
The Goldman Sachs Group 5/3/99 $53.00 86,400 .058% $3,657,000,000 .125% Goldman Sachs
The Seagram Company 6/15/99 $50.13 385,000 .024% $927,312,500 2.081% Goldman Sachs
Wellpoint Health Networks6/29/99 $81.00 10,000 .010% $810,000,000 .100% Bernstein B.C.
Lowe's Companies, Inc. 2/24/99 $58.00 31,300 .027% $319,000,000 .569% Merrill Lynch
Perot Systems 2/1/99 $16.00 6,400 .002% $104,000,000 .098% Warburg Dillon
Read
Smith-Gardner 1/29/99 $12.00 14,800 .003% $52,920,000 .336% BT Alex Brown
Vignette Corp. 2/18/99 $19.00 7,500 .002% $76,000,000 .188% Soundview
Ziff-Davis Inc. 3/30/99 $19.00 18,100 .005% $19,000,000 1.810% Goldman Sachs
</TABLE>