<PAGE> PAGE 1
000 A000000 06/30/98
000 C000000 0000924394
000 D000000 N
000 E000000 NF
000 F000000 Y
000 G000000 N
000 H000000 N
000 I000000 3.0.a
000 J000000 A
001 A000000 MSDW SELECT DIMENSIONS INVESTMENT SERIES
001 B000000 811-7185
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 Y
007 B000000 13
007 C010100 1
007 C020100 THE MONEY MARKET PORTFOLIO
007 C030100 N
007 C010200 2
007 C020200 THE NORTH AMERICAN GOVERNMENT SECURITIES PORT
007 C030200 N
007 C010300 3
007 C020300 THE DIVERSIFIED INCOME PORTFOLIO
007 C030300 N
007 C010400 4
007 C020400 THE BALANCED PORTFOLIO
007 C030400 N
007 C010500 5
007 C020500 THE UTILITIES PORTFOLIO
007 C030500 N
007 C010600 6
007 C020600 THE DIVIDEND GROWTH PORTFOLIO
007 C030600 N
007 C010700 7
007 C020700 THE VALUE ADDED MARKET PORTFOLIO
007 C030700 N
007 C010800 8
007 C020800 THE GROWTH PORFOLIO
007 C030800 N
007 C010900 9
007 C020900 THE AMERICAN VALUE PORTFOLIO
007 C030900 N
007 C011000 10
007 C021000 THE GLOBAL EQUITY PORTFOLIO
<PAGE> PAGE 2
007 C031000 N
007 C011100 11
007 C021100 THE DEVELOPING GROWTH PORTFOLIO
007 C031100 N
007 C011200 12
007 C021200 THE EMERGING MARKETS PORTFOLIO
007 C031200 N
007 C011300 13
007 C021300 THE MID-CAP GROWTH PORTFOLIO
007 C031300 N
007 C011400 14
007 C011500 15
007 C011600 16
007 C011700 17
007 C011800 18
007 C011900 19
007 C012000 20
012 A00AA01 MORGAN STANLEY DEAN WITTER TRUST FSB
012 B00AA01 84-1785
012 C01AA01 JERSEY CITY
012 C02AA01 NJ
012 C03AA01 07311
013 A00AA01 PRICEWATERHOUSECOOPERS LLP
013 B01AA01 NEW YORK
013 B02AA01 NY
013 B03AA01 10036
014 A00AA01 DEAN WITTER REYNOLDS INC.
014 B00AA01 8-14172
014 A00AA02 TCW BROKERAGE SERVICES
014 B00AA02 8-31114
014 A00AA03 MORGAN STANLEY & CO.
014 B00AA03 8-15869
018 00AA00 Y
019 A00AA00 Y
019 B00AA00 133
019 C00AA00 MSDW-FUNDS
020 A000001 MERRILL LYNCH, PIERCE FENNER & SMITH
020 B000001 13-5674085
020 C000001 109
020 A000002 MORGAN STANLEY & CO. INCORPORATED
020 B000002 13-2655998
020 C000002 86
020 A000003 DEAN WITTER REYNOLDS INC.
020 B000003 94-1671389
020 C000003 83
020 A000004 CS FIRST BOSTON & CORP.
020 B000004 13-5659485
020 C000004 52
020 A000005 LYNCH JONES & RYAN INC.
020 B000005 13-3356934
020 C000005 50
<PAGE> PAGE 3
020 A000006 BEAR STEARNS & CO. INC.
020 B000006 13-3299429
020 C000006 46
020 A000007 LEHMAN BROTHERS INC.
020 B000007 13-2518466
020 C000007 46
020 A000008 HSBC SECURITIES INC.
020 B000008 13-2650272
020 C000008 43
020 A000009 GOLDMAM SACHS & CO.
020 B000009 13-5108880
020 C000009 42
020 A000010 BRIDGE TRADING COMPANY
020 B000010 43-1450530
020 C000010 42
021 000000 1350
022 A000001 BANK OF NEW YORK (THE)
022 B000001 13-5160382
022 C000001 3166828
022 D000001 14243
022 A000002 MERRILL LYNCH GOV'T SEC. MONEY MARKET
022 B000002 N/A
022 C000002 699594
022 D000002 0
022 A000003 GOLDMAN SACHS MONEY MARKETS
022 B000003 13-5108880
022 C000003 452969
022 D000003 900
022 A000004 BANC AMERICA SECURITIES INC.
022 B000004 95-4035346
022 C000004 279991
022 D000004 2888
022 A000005 BANK OF NEW YORK REPO MATURITY
022 B000005 13-5160382
022 C000005 280434
022 D000005 11
022 A000006 MERRILL LYNCH PIERCE FENNER & SMITH INC.
022 B000006 13-5674085
022 C000006 228826
022 D000006 24320
022 A000007 LEHMAN BROTHERS INC.
022 B000007 13-2518466
022 C000007 111481
022 D000007 14783
022 A000008 MORGAN (J.P.) SECURITIES
022 B000008 13-3224016
022 C000008 77356
022 D000008 18246
022 A000009 C.S.FIRST BOSTON CORP.
022 B000009 13-5659485
022 C000009 68974
<PAGE> PAGE 4
022 D000009 21893
022 A000010 GOLDMAN SACHS & CO.
022 B000010 13-5108880
022 C000010 59860
022 D000010 19123
023 C000000 5950766
023 D000000 315871
026 A000000 Y
026 B000000 Y
026 C000000 N
026 D000000 Y
026 E000000 N
026 F000000 N
026 G010000 N
026 G020000 N
026 H000000 N
027 000000 Y
029 00AA00 N
030 A00AA00 0
030 B00AA00 0.00
030 C00AA00 0.00
031 A00AA00 0
031 B00AA00 0
032 00AA00 0
033 00AA00 0
034 00AA00 N
035 00AA00 0
036 B00AA00 0
037 00AA00 N
038 00AA00 0
039 00AA00 N
040 00AA00 N
042 A00AA00 0
042 B00AA00 0
042 C00AA00 0
042 D00AA00 0
042 E00AA00 0
042 F00AA00 0
042 G00AA00 0
042 H00AA00 0
043 00AA00 0
044 00AA00 0
049 00AA00 N
050 00AA00 N
051 00AA00 N
052 00AA00 N
053 A00AA00 N
054 A00AA00 Y
054 B00AA00 Y
054 C00AA00 Y
054 D00AA00 N
<PAGE> PAGE 5
054 E00AA00 N
054 F00AA00 N
054 G00AA00 N
054 H00AA00 Y
054 I00AA00 N
054 J00AA00 Y
054 K00AA00 N
054 L00AA00 Y
054 M00AA00 Y
054 N00AA00 N
054 O00AA00 Y
058 A00AA00 N
059 00AA00 Y
060 A00AA00 Y
060 B00AA00 Y
061 00AA00 0
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 C00AA00 0
081 B00AA00 0
082 B00AA00 0
083 B00AA00 0
084 B00AA00 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
086 E020000 0
<PAGE> PAGE 6
086 F010000 0
086 F020000 0
008 A000101 MORGAN STANLEY DEAN WITTER ADVISORS INC.
008 B000101 A
008 C000101 801-42061
008 D010101 NEW YORK
008 D020101 NY
008 D030101 10048
015 A000101 THE BANK OF NEW YORK
015 B000101 C
015 C010101 NEW YORK
015 C020101 NY
015 C030101 10286
015 E010101 X
024 000100 N
025 D000101 0
025 D000102 0
025 D000103 0
025 D000104 0
025 D000105 0
025 D000106 0
025 D000107 0
025 D000108 0
028 A010100 8196
028 A020100 341
028 A030100 0
028 A040100 9072
028 B010100 6378
028 B020100 323
028 B030100 0
028 B040100 10441
028 C010100 7359
028 C020100 356
028 C030100 0
028 C040100 6723
028 D010100 16029
028 D020100 343
028 D030100 0
028 D040100 10665
028 E010100 11001
028 E020100 358
028 E030100 0
028 E040100 8462
028 F010100 10579
028 F020100 418
028 F030100 0
028 F040100 8628
028 G010100 59542
028 G020100 2139
028 G030100 0
028 G040100 53991
<PAGE> PAGE 7
028 H000100 0
045 000100 Y
046 000100 N
047 000100 Y
048 000100 0.500
048 A010100 0
048 A020100 0.000
048 B010100 0
048 B020100 0.000
048 C010100 0
048 C020100 0.000
048 D010100 0
048 D020100 0.000
048 E010100 0
048 E020100 0.000
048 F010100 0
048 F020100 0.000
048 G010100 0
048 G020100 0.000
048 H010100 0
048 H020100 0.000
048 I010100 0
048 I020100 0.000
048 J010100 0
048 J020100 0.000
048 K010100 0
048 K020100 0.000
055 A000100 Y
055 B000100 N
056 000100 Y
057 000100 N
062 A000100 Y
062 B000100 0.0
062 C000100 0.0
062 D000100 0.0
062 E000100 0.0
062 F000100 0.0
062 G000100 0.0
062 H000100 8.6
062 I000100 87.1
062 J000100 0.0
062 K000100 0.0
062 L000100 2.2
062 M000100 0.0
062 N000100 0.0
062 O000100 0.0
062 P000100 0.0
062 Q000100 0.0
062 R000100 0.0
063 A000100 72
063 B000100 0.0
<PAGE> PAGE 8
064 A000100 Y
064 B000100 N
066 A000100 N
067 000100 N
068 A000100 N
068 B000100 N
069 000100 N
070 A010100 Y
070 A020100 Y
070 B010100 N
070 B020100 N
070 C010100 N
070 C020100 N
070 D010100 N
070 D020100 N
070 E010100 N
070 E020100 N
070 F010100 N
070 F020100 N
070 G010100 N
070 G020100 N
070 H010100 N
070 H020100 N
070 I010100 N
070 I020100 N
070 J010100 N
070 J020100 N
070 K010100 N
070 K020100 N
070 L010100 N
070 L020100 N
070 M010100 N
070 M020100 N
070 N010100 N
070 N020100 N
070 O010100 N
070 O020100 N
070 P010100 N
070 P020100 N
070 Q010100 N
070 Q020100 N
070 R010100 N
070 R020100 N
071 A000100 0
071 B000100 0
071 C000100 0
071 D000100 0
072 A000100 6
072 B000100 2371
072 C000100 0
072 D000100 0
<PAGE> PAGE 9
072 E000100 0
072 F000100 209
072 G000100 0
072 H000100 0
072 I000100 0
072 J000100 5
072 K000100 0
072 L000100 8
072 M000100 1
072 N000100 0
072 O000100 0
072 P000100 0
072 Q000100 0
072 R000100 7
072 S000100 1
072 T000100 0
072 U000100 1
072 V000100 0
072 W000100 0
072 X000100 232
072 Y000100 0
072 Z000100 2139
072AA000100 0
072BB000100 0
072CC010100 0
072CC020100 0
072DD010100 2139
072DD020100 0
072EE000100 0
073 A010100 0.0253
073 A020100 0.0000
073 B000100 0.0000
073 C000100 0.0000
074 A000100 19
074 B000100 0
074 C000100 91687
074 D000100 0
074 E000100 0
074 F000100 0
074 G000100 0
074 H000100 0
074 I000100 0
074 J000100 0
074 K000100 488
074 L000100 2
074 M000100 7
074 N000100 92203
074 O000100 0
074 P000100 453
074 Q000100 0
074 R010100 0
<PAGE> PAGE 10
074 R020100 0
074 R030100 0
074 R040100 15
074 S000100 0
074 T000100 91735
074 U010100 0
074 U020100 91735
074 V010100 1.00
074 V020100 0.00
074 W000100 0.9996
074 X000100 2
074 Y000100 0
075 A000100 84357
075 B000100 0
076 000100 0.00
008 A000201 MORGAN STANLEY DEAN WITTER ADVISORS INC.
008 B000201 A
008 C000201 801-42061
008 D010201 NEW YORK
008 D020201 NY
008 D030201 10048
008 A000202 TCW FUNDS MANAGEMENT, INC.
008 B000202 S
008 C000202 801-29075
008 D010202 LOS ANGELES
008 D020202 CA
008 D030202 90017
015 A000201 THE BANK OF NEW YORK
015 B000201 C
015 C010201 NEW YORK
015 C020201 NY
015 C030201 10286
015 E010201 X
024 000200 N
025 D000201 0
025 D000202 0
025 D000203 0
025 D000204 0
025 D000205 0
025 D000206 0
025 D000207 0
025 D000208 0
028 A010200 425
028 A020200 16
028 A030200 0
028 A040200 180
028 B010200 284
028 B020200 18
028 B030200 0
028 B040200 95
028 C010200 135
<PAGE> PAGE 11
028 C020200 21
028 C030200 0
028 C040200 55
028 D010200 322
028 D020200 19
028 D030200 0
028 D040200 328
028 E010200 305
028 E020200 23
028 E030200 0
028 E040200 160
028 F010200 363
028 F020200 21
028 F030200 0
028 F040200 71
028 G010200 1834
028 G020200 118
028 G030200 0
028 G040200 889
028 H000200 0
045 000200 Y
046 000200 N
047 000200 Y
048 000200 0.650
048 A010200 0
048 A020200 0.000
048 B010200 0
048 B020200 0.000
048 C010200 0
048 C020200 0.000
048 D010200 0
048 D020200 0.000
048 E010200 0
048 E020200 0.000
048 F010200 0
048 F020200 0.000
048 G010200 0
048 G020200 0.000
048 H010200 0
048 H020200 0.000
048 I010200 0
048 I020200 0.000
048 J010200 0
048 J020200 0.000
048 K010200 0
048 K020200 0.000
055 A000200 N
055 B000200 N
056 000200 Y
057 000200 N
062 A000200 Y
<PAGE> PAGE 12
062 B000200 0.0
062 C000200 32.4
062 D000200 1.8
062 E000200 0.0
062 F000200 0.0
062 G000200 0.0
062 H000200 0.0
062 I000200 0.0
062 J000200 0.0
062 K000200 0.0
062 L000200 0.0
062 M000200 14.6
062 N000200 0.0
062 O000200 0.0
062 P000200 0.0
062 Q000200 49.2
062 R000200 0.0
063 A000200 0
063 B000200 1.9
064 A000200 N
064 B000200 N
066 A000200 N
067 000200 N
068 A000200 N
068 B000200 N
069 000200 N
070 A010200 Y
070 A020200 Y
070 B010200 Y
070 B020200 N
070 C010200 Y
070 C020200 N
070 D010200 Y
070 D020200 N
070 E010200 Y
070 E020200 N
070 F010200 Y
070 F020200 N
070 G010200 Y
070 G020200 N
070 H010200 Y
070 H020200 N
070 I010200 Y
070 I020200 N
070 J010200 Y
070 J020200 N
070 K010200 Y
070 K020200 N
070 L010200 Y
070 L020200 N
070 M010200 Y
<PAGE> PAGE 13
070 M020200 N
070 N010200 Y
070 N020200 N
070 O010200 Y
070 O020200 N
070 P010200 Y
070 P020200 N
070 Q010200 Y
070 Q020200 N
070 R010200 N
070 R020200 N
071 A000200 1096
071 B000200 1176
071 C000200 4212
071 D000200 26
072 A000200 6
072 B000200 163
072 C000200 0
072 D000200 0
072 E000200 0
072 F000200 18
072 G000200 0
072 H000200 0
072 I000200 1
072 J000200 5
072 K000200 0
072 L000200 0
072 M000200 0
072 N000200 0
072 O000200 0
072 P000200 0
072 Q000200 0
072 R000200 9
072 S000200 1
072 T000200 0
072 U000200 1
072 V000200 0
072 W000200 1
072 X000200 36
072 Y000200 0
072 Z000200 127
072AA000200 3
072BB000200 0
072CC010200 34
072CC020200 0
072DD010200 118
072DD020200 0
072EE000200 0
073 A010200 0.2200
073 A020200 0.0000
073 B000200 0.0000
<PAGE> PAGE 14
073 C000200 0.0000
074 A000200 108
074 B000200 111
074 C000200 1994
074 D000200 3933
074 E000200 0
074 F000200 0
074 G000200 0
074 H000200 0
074 I000200 0
074 J000200 9
074 K000200 0
074 L000200 28
074 M000200 2
074 N000200 6185
074 O000200 0
074 P000200 3
074 Q000200 0
074 R010200 0
074 R020200 0
074 R030200 0
074 R040200 22
074 S000200 0
074 T000200 6160
074 U010200 605
074 U020200 0
074 V010200 10.18
074 V020200 0.00
074 W000200 0.0000
074 X000200 2
074 Y000200 800
075 A000200 0
075 B000200 5631
076 000200 0.00
008 A000301 MORGAN STANLEY DEAN WITTER ADVISORS INC.
008 B000301 A
008 C000301 801-42061
008 D010301 NEW YORK
008 D020301 NY
008 D030301 10048
015 A000301 THE CHASE MANHATTAN BANK, N.A.
015 B000301 C
015 C010301 NEW YORK
015 C020301 NY
015 C030301 10005
015 E010301 X
024 000300 N
025 D000301 0
025 D000302 0
025 D000303 0
025 D000304 0
<PAGE> PAGE 15
025 D000305 0
025 D000306 0
025 D000307 0
025 D000308 0
028 A010300 3444
028 A020300 430
028 A030300 0
028 A040300 702
028 B010300 3811
028 B020300 424
028 B030300 0
028 B040300 948
028 C010300 2985
028 C020300 392
028 C030300 0
028 C040300 1766
028 D010300 3033
028 D020300 493
028 D030300 0
028 D040300 1720
028 E010300 2832
028 E020300 459
028 E030300 0
028 E040300 569
028 F010300 3746
028 F020300 555
028 F030300 0
028 F040300 696
028 G010300 19851
028 G020300 2753
028 G030300 0
028 G040300 6401
028 H000300 19851
045 000300 Y
046 000300 N
047 000300 Y
048 000300 0.400
048 A010300 0
048 A020300 0.000
048 B010300 0
048 B020300 0.000
048 C010300 0
048 C020300 0.000
048 D010300 0
048 D020300 0.000
048 E010300 0
048 E020300 0.000
048 F010300 0
048 F020300 0.000
048 G010300 0
048 G020300 0.000
<PAGE> PAGE 16
048 H010300 0
048 H020300 0.000
048 I010300 0
048 I020300 0.000
048 J010300 0
048 J020300 0.000
048 K010300 0
048 K020300 0.000
055 A000300 N
055 B000300 N
056 000300 Y
057 000300 N
062 A000300 Y
062 B000300 0.0
062 C000300 0.0
062 D000300 3.6
062 E000300 0.0
062 F000300 0.0
062 G000300 0.0
062 H000300 0.0
062 I000300 0.0
062 J000300 0.0
062 K000300 0.0
062 L000300 0.0
062 M000300 16.1
062 N000300 30.7
062 O000300 0.0
062 P000300 36.6
062 Q000300 11.1
062 R000300 0.4
063 A000300 0
063 B000300 9.3
064 A000300 N
064 B000300 Y
065 000300 N
066 A000300 N
067 000300 N
068 A000300 N
068 B000300 N
069 000300 N
070 A010300 Y
070 A020300 Y
070 B010300 Y
070 B020300 N
070 C010300 Y
070 C020300 N
070 D010300 N
070 D020300 N
070 E010300 Y
070 E020300 N
070 F010300 N
<PAGE> PAGE 17
070 F020300 N
070 G010300 Y
070 G020300 N
070 H010300 N
070 H020300 N
070 I010300 Y
070 I020300 N
070 J010300 Y
070 J020300 Y
070 K010300 N
070 K020300 N
070 L010300 Y
070 L020300 Y
070 M010300 Y
070 M020300 Y
070 N010300 Y
070 N020300 N
070 O010300 Y
070 O020300 N
070 P010300 Y
070 P020300 N
070 Q010300 N
070 Q020300 N
070 R010300 N
070 R020300 N
071 A000300 51517
071 B000300 37798
071 C000300 67848
071 D000300 56
072 A000300 6
072 B000300 2890
072 C000300 0
072 D000300 0
072 E000300 0
072 F000300 140
072 G000300 0
072 H000300 0
072 I000300 0
072 J000300 15
072 K000300 0
072 L000300 4
072 M000300 0
072 N000300 0
072 O000300 0
072 P000300 0
072 Q000300 0
072 R000300 8
072 S000300 0
072 T000300 0
072 U000300 1
072 V000300 0
<PAGE> PAGE 18
072 W000300 5
072 X000300 173
072 Y000300 0
072 Z000300 2717
072AA000300 0
072BB000300 429
072CC010300 0
072CC020300 213
072DD010300 2653
072DD020300 0
072EE000300 99
073 A010300 0.3962
073 A020300 0.0000
073 B000300 0.0136
073 C000300 0.0000
074 A000300 429
074 B000300 2818
074 C000300 0
074 D000300 73535
074 E000300 0
074 F000300 300
074 G000300 0
074 H000300 0
074 I000300 13
074 J000300 540
074 K000300 0
074 L000300 1451
074 M000300 74
074 N000300 79160
074 O000300 1049
074 P000300 27
074 Q000300 0
074 R010300 0
074 R020300 0
074 R030300 0
074 R040300 272
074 S000300 0
074 T000300 77812
074 U010300 7633
074 U020300 0
074 V010300 10.19
074 V020300 0.00
074 W000300 0.0000
074 X000300 2
074 Y000300 14524
075 A000300 0
075 B000300 70341
076 000300 0.00
008 A000401 MORGAN STANLEY DEAN WITTER ADVISORS INC.
008 B000401 A
008 C000401 801-42061
<PAGE> PAGE 19
008 D010401 NEW YORK
008 D020401 NY
008 D030401 10048
008 A000402 TCW FUNDS MANAGEMENT, INC.
008 B000402 S
008 C000402 801-29075
008 D010402 LOS ANGELES
008 D020402 CA
008 D030402 90017
015 A000401 THE BANK OF NEW YORK
015 B000401 C
015 C010401 NEW YORK
015 C020401 NY
015 C030401 10286
015 E010401 X
024 000400 Y
025 A000401 MERRILL LYNCH & CO., INC.
025 B000401 13-5674085
025 C000401 D
025 D000401 150
025 A000402 NATIONSBANK CORP.
025 B000402 56-1684171
025 C000402 D
025 D000402 216
025 A000403 BANKAMERICA CORP.
025 B000403 95-4035346
025 C000403 E
025 D000403 2334
025 D000404 0
025 D000405 0
025 D000406 0
025 D000407 0
025 D000408 0
028 A010400 2718
028 A020400 117
028 A030400 0
028 A040400 623
028 B010400 2811
028 B020400 120
028 B030400 0
028 B040400 748
028 C010400 3144
028 C020400 114
028 C030400 0
028 C040400 761
028 D010400 3072
028 D020400 210
028 D030400 0
028 D040400 1097
028 E010400 3363
028 E020400 201
<PAGE> PAGE 20
028 E030400 0
028 E040400 981
028 F010400 4076
028 F020400 2126
028 F030400 0
028 F040400 962
028 G010400 19184
028 G020400 2888
028 G030400 0
028 G040400 5172
028 H000400 19184
045 000400 Y
046 000400 N
047 000400 Y
048 000400 0.750
048 A010400 0
048 A020400 0.000
048 B010400 0
048 B020400 0.000
048 C010400 0
048 C020400 0.000
048 D010400 0
048 D020400 0.000
048 E010400 0
048 E020400 0.000
048 F010400 0
048 F020400 0.000
048 G010400 0
048 G020400 0.000
048 H010400 0
048 H020400 0.000
048 I010400 0
048 I020400 0.000
048 J010400 0
048 J020400 0.000
048 K010400 0
048 K020400 0.000
055 A000400 Y
055 B000400 N
056 000400 Y
057 000400 N
062 A000400 N
062 B000400 0.0
062 C000400 0.0
062 D000400 0.0
062 E000400 0.0
062 F000400 0.0
062 G000400 0.0
062 H000400 0.0
062 I000400 0.0
062 J000400 0.0
<PAGE> PAGE 21
062 K000400 0.0
062 L000400 0.0
062 M000400 0.0
062 N000400 0.0
062 O000400 0.0
062 P000400 0.0
062 Q000400 0.0
062 R000400 0.0
063 A000400 0
063 B000400 0.0
066 A000400 N
067 000400 Y
068 A000400 N
068 B000400 N
069 000400 N
070 A010400 Y
070 A020400 Y
070 B010400 N
070 B020400 N
070 C010400 N
070 C020400 N
070 D010400 N
070 D020400 N
070 E010400 N
070 E020400 N
070 F010400 N
070 F020400 N
070 G010400 N
070 G020400 N
070 H010400 N
070 H020400 N
070 I010400 N
070 I020400 N
070 J010400 Y
070 J020400 N
070 K010400 N
070 K020400 N
070 L010400 N
070 L020400 N
070 M010400 N
070 M020400 N
070 N010400 Y
070 N020400 N
070 O010400 Y
070 O020400 N
070 P010400 Y
070 P020400 N
070 Q010400 N
070 Q020400 N
070 R010400 N
070 R020400 N
<PAGE> PAGE 22
071 A000400 78609
071 B000400 62334
071 C000400 78645
071 D000400 79
072 A000400 6
072 B000400 957
072 C000400 448
072 D000400 0
072 E000400 0
072 F000400 266
072 G000400 0
072 H000400 0
072 I000400 0
072 J000400 12
072 K000400 0
072 L000400 3
072 M000400 0
072 N000400 0
072 O000400 0
072 P000400 0
072 Q000400 0
072 R000400 12
072 S000400 4
072 T000400 0
072 U000400 1
072 V000400 0
072 W000400 3
072 X000400 301
072 Y000400 0
072 Z000400 1104
072AA000400 13504
072BB000400 795
072CC010400 0
072CC020400 5648
072DD010400 1004
072DD020400 0
072EE000400 1884
073 A010400 0.1943
073 A020400 0.0000
073 B000400 0.3443
073 C000400 0.0000
074 A000400 59
074 B000400 1353
074 C000400 0
074 D000400 32563
074 E000400 0
074 F000400 60127
074 G000400 0
074 H000400 0
074 I000400 0
074 J000400 59
<PAGE> PAGE 23
074 K000400 194
074 L000400 380
074 M000400 21
074 N000400 94756
074 O000400 1185
074 P000400 52
074 Q000400 0
074 R010400 0
074 R020400 0
074 R030400 0
074 R040400 19
074 S000400 0
074 T000400 93500
074 U010400 5804
074 U020400 0
074 V010400 16.11
074 V020400 0.00
074 W000400 0.0000
074 X000400 2
074 Y000400 0
075 A000400 0
075 B000400 83291
076 000400 0.00
008 A000501 MORGAN STANLEY DEAN WITTER ADVISORS INC.
008 B000501 A
008 C000501 801-42061
008 D010501 NEW YORK
008 D020501 NY
008 D030501 10048
015 A000501 THE BANK OF NEW YORK
015 B000501 C
015 C010501 NEW YORK
015 C020501 NY
015 C030501 10286
015 E010501 X
024 000500 N
025 D000501 0
025 D000502 0
025 D000503 0
025 D000504 0
025 D000505 0
025 D000506 0
025 D000507 0
025 D000508 0
028 A010500 1815
028 A020500 81
028 A030500 0
028 A040500 -1193
028 B010500 1941
028 B020500 108
028 B030500 0
<PAGE> PAGE 24
028 B040500 -437
028 C010500 2785
028 C020500 119
028 C030500 0
028 C040500 -834
028 D010500 2094
028 D020500 91
028 D030500 0
028 D040500 -1243
028 E010500 1784
028 E020500 140
028 E030500 0
028 E040500 -916
028 F010500 2606
028 F020500 830
028 F030500 0
028 F040500 -1279
028 G010500 13025
028 G020500 1369
028 G030500 0
028 G040500 -5902
028 H000500 0
045 000500 Y
046 000500 N
047 000500 Y
048 000500 0.650
048 A010500 0
048 A020500 0.000
048 B010500 0
048 B020500 0.000
048 C010500 0
048 C020500 0.000
048 D010500 0
048 D020500 0.000
048 E010500 0
048 E020500 0.000
048 F010500 0
048 F020500 0.000
048 G010500 0
048 G020500 0.000
048 H010500 0
048 H020500 0.000
048 I010500 0
048 I020500 0.000
048 J010500 0
048 J020500 0.000
048 K010500 0
048 K020500 0.000
055 A000500 N
055 B000500 N
056 000500 Y
<PAGE> PAGE 25
057 000500 N
062 A000500 N
062 B000500 0.0
062 C000500 0.0
062 D000500 0.0
062 E000500 0.0
062 F000500 0.0
062 G000500 0.0
062 H000500 0.0
062 I000500 0.0
062 J000500 0.0
062 K000500 0.0
062 L000500 0.0
062 M000500 0.0
062 N000500 0.0
062 O000500 0.0
062 P000500 0.0
062 Q000500 0.0
062 R000500 0.0
063 A000500 0
063 B000500 0.0
066 A000500 Y
066 B000500 N
066 C000500 N
066 D000500 N
066 E000500 N
066 F000500 N
066 G000500 Y
067 000500 N
068 A000500 N
068 B000500 N
069 000500 N
070 A010500 Y
070 A020500 Y
070 B010500 Y
070 B020500 N
070 C010500 Y
070 C020500 N
070 D010500 Y
070 D020500 N
070 E010500 Y
070 E020500 N
070 F010500 Y
070 F020500 N
070 G010500 Y
070 G020500 N
070 H010500 Y
070 H020500 N
070 I010500 N
070 I020500 N
070 J010500 Y
<PAGE> PAGE 26
070 J020500 Y
070 K010500 N
070 K020500 N
070 L010500 Y
070 L020500 N
070 M010500 Y
070 M020500 N
070 N010500 Y
070 N020500 N
070 O010500 N
070 O020500 N
070 P010500 Y
070 P020500 N
070 Q010500 N
070 Q020500 N
070 R010500 N
070 R020500 N
071 A000500 17460
071 B000500 7510
071 C000500 55187
071 D000500 14
072 A000500 6
072 B000500 171
072 C000500 746
072 D000500 0
072 E000500 0
072 F000500 187
072 G000500 0
072 H000500 0
072 I000500 0
072 J000500 6
072 K000500 0
072 L000500 4
072 M000500 0
072 N000500 0
072 O000500 0
072 P000500 0
072 Q000500 0
072 R000500 6
072 S000500 1
072 T000500 0
072 U000500 1
072 V000500 0
072 W000500 0
072 X000500 205
072 Y000500 0
072 Z000500 712
072AA000500 992
072BB000500 0
072CC010500 15400
072CC020500 0
<PAGE> PAGE 27
072DD010500 671
072DD020500 0
072EE000500 699
073 A010500 0.2000
073 A020500 0.0000
073 B000500 0.1900
073 C000500 0.0000
074 A000500 0
074 B000500 1992
074 C000500 500
074 D000500 2189
074 E000500 370
074 F000500 59554
074 G000500 0
074 H000500 0
074 I000500 0
074 J000500 0
074 K000500 0
074 L000500 212
074 M000500 2
074 N000500 64819
074 O000500 514
074 P000500 36
074 Q000500 0
074 R010500 0
074 R020500 0
074 R030500 0
074 R040500 28
074 S000500 0
074 T000500 64241
074 U010500 3710
074 U020500 0
074 V010500 17.32
074 V020500 0.00
074 W000500 0.0000
074 X000500 2
074 Y000500 0
075 A000500 0
075 B000500 5912
076 000500 0.00
008 A000601 MORGAN STANLEY DEAN WITTER ADVISORS INC.
008 B000601 A
008 C000601 801-42061
008 D010601 NEW YORK
008 D020601 NY
008 D030601 10048
015 A000601 THE BANK OF NEW YORK
015 B000601 C
015 C010601 NEW YORK
015 C020601 NY
015 C030601 10286
<PAGE> PAGE 28
015 E010601 X
024 000600 N
025 D000601 0
025 D000602 0
025 D000603 0
025 D000604 0
025 D000605 0
025 D000606 0
025 D000607 0
025 D000608 0
028 A010600 14801
028 A020600 784
028 A030600 0
028 A040600 5409
028 B010600 16682
028 B020600 533
028 B030600 0
028 B040600 4599
028 C010600 15933
028 C020600 1417
028 C030600 0
028 C040600 5184
028 D010600 16817
028 D020600 850
028 D030600 0
028 D040600 7278
028 E010600 14550
028 E020600 491
028 E030600 0
028 E040600 6193
028 F010600 16703
028 F020600 27610
028 F030600 0
028 F040600 7320
028 G010600 95486
028 G020600 31685
028 G030600 0
028 G040600 35983
028 H000600 0
045 000600 Y
046 000600 N
047 000600 Y
048 000600 0.000
048 A010600 500000
048 A020600 0.625
048 B010600 0
048 B020600 0.000
048 C010600 0
048 C020600 0.000
048 D010600 0
048 D020600 0.000
<PAGE> PAGE 29
048 E010600 0
048 E020600 0.000
048 F010600 0
048 F020600 0.000
048 G010600 0
048 G020600 0.000
048 H010600 0
048 H020600 0.000
048 I010600 0
048 I020600 0.000
048 J010600 0
048 J020600 0.000
048 K010600 500000
048 K020600 0.500
055 A000600 N
055 B000600 N
056 000600 Y
057 000600 N
062 A000600 N
062 B000600 0.0
062 C000600 0.0
062 D000600 0.0
062 E000600 0.0
062 F000600 0.0
062 G000600 0.0
062 H000600 0.0
062 I000600 0.0
062 J000600 0.0
062 K000600 0.0
062 L000600 0.0
062 M000600 0.0
062 N000600 0.0
062 O000600 0.0
062 P000600 0.0
062 Q000600 0.0
062 R000600 0.0
063 A000600 0
063 B000600 0.0
066 A000600 Y
066 B000600 N
066 C000600 N
066 D000600 N
066 E000600 Y
066 F000600 N
066 G000600 N
067 000600 N
068 A000600 N
068 B000600 N
069 000600 N
070 A010600 Y
070 A020600 Y
<PAGE> PAGE 30
070 B010600 N
070 B020600 N
070 C010600 N
070 C020600 N
070 D010600 N
070 D020600 N
070 E010600 N
070 E020600 N
070 F010600 N
070 F020600 N
070 G010600 N
070 G020600 N
070 H010600 N
070 H020600 N
070 I010600 N
070 I020600 N
070 J010600 N
070 J020600 N
070 K010600 N
070 K020600 N
070 L010600 Y
070 L020600 N
070 M010600 N
070 M020600 N
070 N010600 Y
070 N020600 N
070 O010600 Y
070 O020600 N
070 P010600 Y
070 P020600 Y
070 Q010600 N
070 Q020600 N
070 R010600 N
070 R020600 N
071 A000600 137852
071 B000600 72734
071 C000600 591070
071 D000600 12
072 A000600 6
072 B000600 161
072 C000600 7249
072 D000600 0
072 E000600 0
072 F000600 1826
072 G000600 0
072 H000600 0
072 I000600 0
072 J000600 17
072 K000600 0
072 L000600 23
072 M000600 4
<PAGE> PAGE 31
072 N000600 0
072 O000600 0
072 P000600 0
072 Q000600 0
072 R000600 8
072 S000600 1
072 T000600 0
072 U000600 1
072 V000600 0
072 W000600 1
072 X000600 1881
072 Y000600 0
072 Z000600 5529
072AA000600 24254
072BB000600 0
072CC010600 44668
072CC020600 0
072DD010600 5525
072DD020600 0
072EE000600 26160
073 A010600 0.1978
073 A020600 0.0000
073 B000600 0.9020
073 C000600 0.0000
074 A000600 0
074 B000600 5977
074 C000600 0
074 D000600 0
074 E000600 0
074 F000600 645881
074 G000600 0
074 H000600 0
074 I000600 0
074 J000600 0
074 K000600 0
074 L000600 1707
074 M000600 12
074 N000600 653577
074 O000600 695
074 P000600 335
074 Q000600 0
074 R010600 0
074 R020600 0
074 R030600 0
074 R040600 173
074 S000600 0
074 T000600 652374
074 U010600 30819
074 U020600 0
074 V010600 21.17
074 V020600 0.00
<PAGE> PAGE 32
074 W000600 0.0000
074 X000600 2
074 Y000600 0
075 A000600 0
075 B000600 598459
076 000600 0.00
008 A000701 MORGAN STANLEY DEAN WITTER ADVISORS INC.
008 B000701 A
008 C000701 801-42061
008 D010701 NEW YORK
008 D020701 NY
008 D030701 10048
015 A000701 THE BANK OF NEW YORK
015 B000701 C
015 C010701 NEW YORK
015 C020701 NY
015 C030701 10286
015 E010701 X
024 000700 Y
025 A000701 LEHMAN BROTHERS INC.
025 B000701 13-2518466
025 C000701 E
025 D000701 372
025 A000702 MERRILL LYNCH & CO. INC.
025 B000702 13-5674085
025 C000702 E
025 D000702 351
025 D000703 0
025 D000704 0
025 D000705 0
025 D000706 0
025 D000707 0
025 D000708 0
028 A010700 3518
028 A020700 170
028 A030700 0
028 A040700 1393
028 B010700 3627
028 B020700 78
028 B030700 0
028 B040700 1656
028 C010700 4371
028 C020700 214
028 C030700 0
028 C040700 1841
028 D010700 4072
028 D020700 156
028 D030700 0
028 D040700 2657
028 E010700 3520
028 E020700 110
<PAGE> PAGE 33
028 E030700 0
028 E040700 1651
028 F010700 3389
028 F020700 2534
028 F030700 0
028 F040700 1875
028 G010700 22497
028 G020700 3262
028 G030700 0
028 G040700 11073
028 H000700 22497
045 000700 Y
046 000700 N
047 000700 Y
048 000700 0.500
048 A010700 0
048 A020700 0.000
048 B010700 0
048 B020700 0.000
048 C010700 0
048 C020700 0.000
048 D010700 0
048 D020700 0.000
048 E010700 0
048 E020700 0.000
048 F010700 0
048 F020700 0.000
048 G010700 0
048 G020700 0.000
048 H010700 0
048 H020700 0.000
048 I010700 0
048 I020700 0.000
048 J010700 0
048 J020700 0.000
048 K010700 0
048 K020700 0.000
055 A000700 N
055 B000700 N
056 000700 Y
057 000700 N
062 A000700 N
062 B000700 0.0
062 C000700 0.0
062 D000700 0.0
062 E000700 0.0
062 F000700 0.0
062 G000700 0.0
062 H000700 0.0
062 I000700 0.0
062 J000700 0.0
<PAGE> PAGE 34
062 K000700 0.0
062 L000700 0.0
062 M000700 0.0
062 N000700 0.0
062 O000700 0.0
062 P000700 0.0
062 Q000700 0.0
062 R000700 0.0
063 A000700 0
063 B000700 0.0
066 A000700 Y
066 B000700 N
066 C000700 N
066 D000700 N
066 E000700 N
066 F000700 N
066 G000700 Y
067 000700 N
068 A000700 N
068 B000700 N
069 000700 Y
070 A010700 Y
070 A020700 Y
070 B010700 N
070 B020700 N
070 C010700 N
070 C020700 N
070 D010700 N
070 D020700 N
070 E010700 N
070 E020700 N
070 F010700 Y
070 F020700 N
070 G010700 N
070 G020700 N
070 H010700 N
070 H020700 N
070 I010700 N
070 I020700 N
070 J010700 N
070 J020700 N
070 K010700 N
070 K020700 N
070 L010700 Y
070 L020700 Y
070 M010700 N
070 M020700 N
070 N010700 Y
070 N020700 N
070 O010700 Y
070 O020700 N
<PAGE> PAGE 35
070 P010700 Y
070 P020700 N
070 Q010700 N
070 Q020700 N
070 R010700 N
070 R020700 N
071 A000700 19779
071 B000700 6495
071 C000700 152076
071 D000700 4
072 A000700 6
072 B000700 186
072 C000700 1176
072 D000700 0
072 E000700 0
072 F000700 394
072 G000700 0
072 H000700 0
072 I000700 0
072 J000700 14
072 K000700 0
072 L000700 6
072 M000700 1
072 N000700 0
072 O000700 0
072 P000700 0
072 Q000700 0
072 R000700 9
072 S000700 0
072 T000700 0
072 U000700 1
072 V000700 0
072 W000700 6
072 X000700 431
072 Y000700 0
072 Z000700 934
072AA000700 1808
072BB000700 0
072CC010700 13461
072CC020700 0
072DD010700 939
072DD020700 0
072EE000700 2323
073 A010700 0.1124
073 A020700 0.0000
073 B000700 0.2695
073 C000700 0.0000
074 A000700 0
074 B000700 4640
074 C000700 0
074 D000700 0
<PAGE> PAGE 36
074 E000700 0
074 F000700 163832
074 G000700 0
074 H000700 0
074 I000700 0
074 J000700 1384
074 K000700 0
074 L000700 291
074 M000700 3
074 N000700 170150
074 O000700 1081
074 P000700 73
074 Q000700 0
074 R010700 0
074 R020700 0
074 R030700 0
074 R040700 52
074 S000700 0
074 T000700 168944
074 U010700 8830
074 U020700 0
074 V010700 19.13
074 V020700 0.00
074 W000700 0.0000
074 X000700 2
074 Y000700 0
075 A000700 0
075 B000700 158833
076 000700 0.00
008 A000801 MORGAN STANLEY DEAN WITTER ADVISORS INC.
008 B000801 A
008 C000801 801-42061
008 D010801 NEW YORK
008 D020801 NY
008 D030801 10048
008 A000802 MORGAN STANLEY ASSET MANGEMEENT
008 B000802 S
008 C000802 801-15757
008 D010802 NEW YORK
008 D020802 NY
008 D030802 10036
015 A000801 THE BANK OF NEW YORK
015 B000801 C
015 C010801 NEW YORK
015 C020801 NY
015 C030801 10286
015 E010801 X
024 000800 Y
025 A000801 MORGAN (J.P.) & COMPANY
025 B000801 13-3224016
025 C000801 E
<PAGE> PAGE 37
025 D000801 328
025 A000802 MERRILL LYNCH & CO. INC.
025 B000802 13-5674085
025 C000802 E
025 D000802 489
025 D000803 0
025 D000804 0
025 D000805 0
025 D000806 0
025 D000807 0
025 D000808 0
028 A010800 1367
028 A020800 0
028 A030800 0
028 A040800 281
028 B010800 1673
028 B020800 0
028 B030800 0
028 B040800 388
028 C010800 1714
028 C020800 0
028 C030800 0
028 C040800 658
028 D010800 1768
028 D020800 0
028 D030800 0
028 D040800 1989
028 E010800 1148
028 E020800 0
028 E030800 0
028 E040800 609
028 F010800 1517
028 F020800 1300
028 F030800 0
028 F040800 464
028 G010800 9187
028 G020800 1300
028 G030800 0
028 G040800 4389
028 H000800 9187
045 000800 Y
046 000800 N
047 000800 Y
048 000800 0.850
048 A010800 0
048 A020800 0.000
048 B010800 0
048 B020800 0.000
048 C010800 0
048 C020800 0.000
048 D010800 0
<PAGE> PAGE 38
048 D020800 0.000
048 E010800 0
048 E020800 0.000
048 F010800 0
048 F020800 0.000
048 G010800 0
048 G020800 0.000
048 H010800 0
048 H020800 0.000
048 I010800 0
048 I020800 0.000
048 J010800 0
048 J020800 0.000
048 K010800 0
048 K020800 0.000
055 A000800 Y
055 B000800 N
056 000800 Y
057 000800 N
062 A000800 N
062 B000800 0.0
062 C000800 0.0
062 D000800 0.0
062 E000800 0.0
062 F000800 0.0
062 G000800 0.0
062 H000800 0.0
062 I000800 0.0
062 J000800 0.0
062 K000800 0.0
062 L000800 0.0
062 M000800 0.0
062 N000800 0.0
062 O000800 0.0
062 P000800 0.0
062 Q000800 0.0
062 R000800 0.0
063 A000800 0
063 B000800 0.0
066 A000800 Y
066 B000800 N
066 C000800 N
066 D000800 Y
066 E000800 N
066 F000800 N
066 G000800 N
067 000800 N
068 A000800 N
068 B000800 N
069 000800 N
070 A010800 Y
<PAGE> PAGE 39
070 A020800 Y
070 B010800 N
070 B020800 N
070 C010800 N
070 C020800 N
070 D010800 N
070 D020800 N
070 E010800 N
070 E020800 N
070 F010800 N
070 F020800 N
070 G010800 N
070 G020800 N
070 H010800 N
070 H020800 N
070 I010800 N
070 I020800 N
070 J010800 Y
070 J020800 N
070 K010800 N
070 K020800 N
070 L010800 Y
070 L020800 N
070 M010800 N
070 M020800 N
070 N010800 Y
070 N020800 N
070 O010800 Y
070 O020800 N
070 P010800 Y
070 P020800 N
070 Q010800 N
070 Q020800 N
070 R010800 N
070 R020800 N
071 A000800 67927
071 B000800 64027
071 C000800 42388
071 D000800 151
072 A000800 6
072 B000800 48
072 C000800 210
072 D000800 0
072 E000800 0
072 F000800 186
072 G000800 0
072 H000800 0
072 I000800 0
072 J000800 10
072 K000800 0
072 L000800 3
<PAGE> PAGE 40
072 M000800 45
072 N000800 0
072 O000800 0
072 P000800 0
072 Q000800 0
072 R000800 11
072 S000800 4
072 T000800 0
072 U000800 1
072 V000800 0
072 W000800 2
072 X000800 262
072 Y000800 0
072 Z000800 -4
072AA000800 11098
072BB000800 2263
072CC010800 0
072CC020800 4323
072DD010800 0
072DD020800 0
072EE000800 1300
073 A010800 0.0000
073 A020800 0.0000
073 B000800 0.4900
073 C000800 0.0000
074 A000800 0
074 B000800 2198
074 C000800 0
074 D000800 0
074 E000800 0
074 F000800 47663
074 G000800 0
074 H000800 0
074 I000800 0
074 J000800 428
074 K000800 77
074 L000800 44
074 M000800 18
074 N000800 50428
074 O000800 715
074 P000800 36
074 Q000800 0
074 R010800 0
074 R020800 0
074 R030800 0
074 R040800 59
074 S000800 0
074 T000800 49618
074 U010800 2786
074 U020800 0
074 V010800 17.81
<PAGE> PAGE 41
074 V020800 0.00
074 W000800 0.0000
074 X000800 2
074 Y000800 0
075 A000800 0
075 B000800 46076
076 000800 0.00
008 A000901 MORGAN STANLEY DEAN WITTER ADVISORS INC.
008 B000901 A
008 C000901 801-42061
008 D010901 NEW YORK
008 D020901 NY
008 D030901 10048
015 A000901 THE BANK OF NEW YORK
015 B000901 C
015 C010901 NEW YORK
015 C020901 NY
015 C030901 10286
015 E010901 X
024 000900 Y
025 A000901 LEHMAN BROTHER HOLDINGS INC.
025 B000901 13-2518466
025 C000901 E
025 D000901 1319
025 A000902 MERRILL LYNCH & CO. INC.
025 B000902 13-5674085
025 C000902 E
025 D000902 2445
025 D000903 0
025 D000904 0
025 D000905 0
025 D000906 0
025 D000907 0
025 D000908 0
028 A010900 7502
028 A020900 167
028 A030900 0
028 A040900 2095
028 B010900 7536
028 B020900 146
028 B030900 0
028 B040900 3008
028 C010900 7944
028 C020900 37
028 C030900 0
028 C040900 2961
028 D010900 8401
028 D020900 28
028 D030900 0
028 D040900 4721
028 E010900 6314
<PAGE> PAGE 42
028 E020900 55
028 E030900 0
028 E040900 3266
028 F010900 7515
028 F020900 24820
028 F030900 0
028 F040900 3168
028 G010900 45212
028 G020900 25253
028 G030900 0
028 G040900 19219
028 H000900 45212
045 000900 Y
046 000900 N
047 000900 Y
048 000900 0.625
048 A010900 0
048 A020900 0.000
048 B010900 0
048 B020900 0.000
048 C010900 0
048 C020900 0.000
048 D010900 0
048 D020900 0.000
048 E010900 0
048 E020900 0.000
048 F010900 0
048 F020900 0.000
048 G010900 0
048 G020900 0.000
048 H010900 0
048 H020900 0.000
048 I010900 0
048 I020900 0.000
048 J010900 0
048 J020900 0.000
048 K010900 0
048 K020900 0.000
055 A000900 Y
055 B000900 N
056 000900 Y
057 000900 N
062 A000900 N
062 B000900 0.0
062 C000900 0.0
062 D000900 0.0
062 E000900 0.0
062 F000900 0.0
062 G000900 0.0
062 H000900 0.0
062 I000900 0.0
<PAGE> PAGE 43
062 J000900 0.0
062 K000900 0.0
062 L000900 0.0
062 M000900 0.0
062 N000900 0.0
062 O000900 0.0
062 P000900 0.0
062 Q000900 0.0
062 R000900 0.0
063 A000900 0
063 B000900 0.0
066 A000900 Y
066 B000900 N
066 C000900 N
066 D000900 Y
066 E000900 N
066 F000900 N
066 G000900 N
067 000900 N
068 A000900 N
068 B000900 N
069 000900 N
070 A010900 Y
070 A020900 Y
070 B010900 Y
070 B020900 N
070 C010900 Y
070 C020900 N
070 D010900 Y
070 D020900 N
070 E010900 Y
070 E020900 N
070 F010900 Y
070 F020900 N
070 G010900 Y
070 G020900 N
070 H010900 Y
070 H020900 N
070 I010900 Y
070 I020900 N
070 J010900 Y
070 J020900 N
070 K010900 N
070 K020900 N
070 L010900 Y
070 L020900 Y
070 M010900 Y
070 M020900 Y
070 N010900 Y
070 N020900 N
070 O010900 Y
<PAGE> PAGE 44
070 O020900 N
070 P010900 Y
070 P020900 Y
070 Q010900 N
070 Q020900 N
070 R010900 N
070 R020900 N
071 A000900 335340
071 B000900 310351
071 C000900 255139
071 D000900 122
072 A000900 6
072 B000900 590
072 C000900 845
072 D000900 0
072 E000900 0
072 F000900 826
072 G000900 0
072 H000900 0
072 I000900 0
072 J000900 23
072 K000900 0
072 L000900 9
072 M000900 1
072 N000900 0
072 O000900 0
072 P000900 0
072 Q000900 0
072 R000900 9
072 S000900 1
072 T000900 0
072 U000900 1
072 V000900 0
072 W000900 2
072 X000900 872
072 Y000900 0
072 Z000900 563
072AA000900 24635
072BB000900 0
072CC010900 23694
072CC020900 0
072DD010900 549
072DD020900 0
072EE000900 24704
073 A010900 0.0452
073 A020900 0.0000
073 B000900 1.9398
073 C000900 0.0000
074 A000900 0
074 B000900 748
074 C000900 9800
<PAGE> PAGE 45
074 D000900 28119
074 E000900 0
074 F000900 266707
074 G000900 0
074 H000900 0
074 I000900 0
074 J000900 0
074 K000900 0
074 L000900 423
074 M000900 3
074 N000900 305800
074 O000900 445
074 P000900 418
074 Q000900 0
074 R010900 0
074 R020900 0
074 R030900 0
074 R040900 39
074 S000900 0
074 T000900 304898
074 U010900 14182
074 U020900 0
074 V010900 21.50
074 V020900 0.00
074 W000900 0.0000
074 X000900 2
074 Y000900 0
075 A000900 0
075 B000900 266587
076 000900 0.00
008 A001001 MORGAN STANLEY DEAN WITTER ADVISORS INC.
008 B001001 A
008 C001001 801-42061
008 D011001 NEW YORK
008 D021001 NY
008 D031001 10048
015 A001001 THE CHASE MANHATTAN BANK, N.A.
015 B001001 C
015 C011001 NEW YORK
015 C021001 NY
015 C031001 10005
015 E011001 X
024 001000 N
025 D001001 0
025 D001002 0
025 D001003 0
025 D001004 0
025 D001005 0
025 D001006 0
025 D001007 0
025 D001008 0
<PAGE> PAGE 46
028 A011000 3401
028 A021000 48
028 A031000 0
028 A041000 3320
028 B011000 2959
028 B021000 65
028 B031000 0
028 B041000 1852
028 C011000 2603
028 C021000 17
028 C031000 0
028 C041000 2098
028 D011000 4837
028 D021000 171
028 D031000 0
028 D041000 2167
028 E011000 3388
028 E021000 399
028 E031000 0
028 E041000 2136
028 F011000 3642
028 F021000 709
028 F031000 0
028 F041000 1376
028 G011000 20830
028 G021000 1409
028 G031000 0
028 G041000 12949
028 H001000 0
045 001000 Y
046 001000 N
047 001000 Y
048 001000 1.000
048 A011000 0
048 A021000 0.000
048 B011000 0
048 B021000 0.000
048 C011000 0
048 C021000 0.000
048 D011000 0
048 D021000 0.000
048 E011000 0
048 E021000 0.000
048 F011000 0
048 F021000 0.000
048 G011000 0
048 G021000 0.000
048 H011000 0
048 H021000 0.000
048 I011000 0
048 I021000 0.000
<PAGE> PAGE 47
048 J011000 0
048 J021000 0.000
048 K011000 0
048 K021000 0.000
055 A001000 N
055 B001000 N
056 001000 Y
057 001000 N
062 A001000 N
062 B001000 0.0
062 C001000 0.0
062 D001000 0.0
062 E001000 0.0
062 F001000 0.0
062 G001000 0.0
062 H001000 0.0
062 I001000 0.0
062 J001000 0.0
062 K001000 0.0
062 L001000 0.0
062 M001000 0.0
062 N001000 0.0
062 O001000 0.0
062 P001000 0.0
062 Q001000 0.0
062 R001000 0.0
063 A001000 0
063 B001000 0.0
066 A001000 Y
066 B001000 N
066 C001000 N
066 D001000 N
066 E001000 N
066 F001000 N
066 G001000 Y
067 001000 N
068 A001000 N
068 B001000 Y
069 001000 N
070 A011000 Y
070 A021000 Y
070 B011000 Y
070 B021000 N
070 C011000 Y
070 C021000 N
070 D011000 Y
070 D021000 N
070 E011000 Y
070 E021000 N
070 F011000 Y
070 F021000 N
<PAGE> PAGE 48
070 G011000 Y
070 G021000 N
070 H011000 Y
070 H021000 N
070 I011000 Y
070 I021000 N
070 J011000 Y
070 J021000 Y
070 K011000 Y
070 K021000 N
070 L011000 Y
070 L021000 Y
070 M011000 Y
070 M021000 Y
070 N011000 Y
070 N021000 N
070 O011000 Y
070 O021000 N
070 P011000 Y
070 P021000 N
070 Q011000 N
070 Q021000 N
070 R011000 N
070 R021000 N
071 A001000 35078
071 B001000 28569
071 C001000 107246
071 D001000 27
072 A001000 6
072 B001000 211
072 C001000 1257
072 D001000 0
072 E001000 0
072 F001000 568
072 G001000 0
072 H001000 0
072 I001000 0
072 J001000 29
072 K001000 0
072 L001000 9
072 M001000 1
072 N001000 0
072 O001000 1
072 P001000 0
072 Q001000 0
072 R001000 8
072 S001000 1
072 T001000 0
072 U001000 1
072 V001000 0
072 W001000 5
<PAGE> PAGE 49
072 X001000 623
072 Y001000 0
072 Z001000 845
072AA001000 1088
072BB001000 0
072CC011000 11961
072CC021000 0
072DD011000 986
072DD021000 0
072EE001000 422
073 A011000 0.1208
073 A021000 0.0000
073 B001000 0.0508
073 C001000 0.0000
074 A001000 773
074 B001000 3468
074 C001000 4996
074 D001000 0
074 E001000 1253
074 F001000 114324
074 G001000 0
074 H001000 0
074 I001000 5
074 J001000 0
074 K001000 0
074 L001000 460
074 M001000 1
074 N001000 125280
074 O001000 1123
074 P001000 107
074 Q001000 0
074 R011000 0
074 R021000 0
074 R031000 0
074 R041000 45
074 S001000 0
074 T001000 124005
074 U011000 8521
074 U021000 0
074 V011000 14.55
074 V021000 0.00
074 W001000 0.0000
074 X001000 2
074 Y001000 0
075 A001000 0
075 B001000 144539
076 001000 0.00
008 A001101 MORGAN STANLQY DEAN WITTER ADVISORS INC.
008 B001101 A
008 C001101 801-42061
008 D011101 NEW YORK
<PAGE> PAGE 50
008 D021101 NY
008 D031101 10048
015 A001101 THE BANK OF NEW YORK
015 B001101 C
015 C011101 NEW YORK
015 C021101 NY
015 C031101 10286
015 E011101 X
024 001100 N
025 D001101 0
025 D001102 0
025 D001103 0
025 D001104 0
025 D001105 0
025 D001106 0
025 D001107 0
025 D001108 0
028 A011100 1564
028 A021100 36
028 A031100 0
028 A041100 1979
028 B011100 1522
028 B021100 19
028 B031100 0
028 B041100 1611
028 C011100 1222
028 C021100 1
028 C031100 0
028 C041100 1345
028 D011100 1569
028 D021100 0
028 D031100 0
028 D041100 2230
028 E011100 1537
028 E021100 0
028 E031100 0
028 E041100 1472
028 F011100 1497
028 F021100 121
028 F031100 0
028 F041100 1829
028 G011100 8911
028 G021100 177
028 G031100 0
028 G041100 10466
028 H001100 8911
045 001100 Y
046 001100 N
047 001100 Y
048 001100 0.500
048 A011100 0
<PAGE> PAGE 51
048 A021100 0.000
048 B011100 0
048 B021100 0.000
048 C011100 0
048 C021100 0.000
048 D011100 0
048 D021100 0.000
048 E011100 0
048 E021100 0.000
048 F011100 0
048 F021100 0.000
048 G011100 0
048 G021100 0.000
048 H011100 0
048 H021100 0.000
048 I011100 0
048 I021100 0.000
048 J011100 0
048 J021100 0.000
048 K011100 0
048 K021100 0.000
055 A001100 Y
055 B001100 N
056 001100 Y
057 001100 N
062 A001100 N
062 B001100 0.0
062 C001100 0.0
062 D001100 0.0
062 E001100 0.0
062 F001100 0.0
062 G001100 0.0
062 H001100 0.0
062 I001100 0.0
062 J001100 0.0
062 K001100 0.0
062 L001100 0.0
062 M001100 0.0
062 N001100 0.0
062 O001100 0.0
062 P001100 0.0
062 Q001100 0.0
062 R001100 0.0
063 A001100 0
063 B001100 0.0
066 A001100 Y
066 B001100 N
066 C001100 Y
066 D001100 N
066 E001100 N
066 F001100 N
<PAGE> PAGE 52
066 G001100 N
067 001100 N
068 A001100 N
068 B001100 N
069 001100 N
070 A011100 Y
070 A021100 Y
070 B011100 N
070 B021100 N
070 C011100 N
070 C021100 N
070 D011100 N
070 D021100 N
070 E011100 N
070 E021100 N
070 F011100 N
070 F021100 N
070 G011100 N
070 G021100 N
070 H011100 N
070 H021100 N
070 I011100 N
070 I021100 N
070 J011100 Y
070 J021100 N
070 K011100 N
070 K021100 N
070 L011100 Y
070 L021100 Y
070 M011100 N
070 M021100 N
070 N011100 Y
070 N021100 N
070 O011100 Y
070 O021100 N
070 P011100 Y
070 P021100 Y
070 Q011100 N
070 Q021100 N
070 R011100 N
070 R021100 N
071 A001100 83347
071 B001100 80278
071 C001100 79066
071 D001100 102
072 A001100 6
072 B001100 182
072 C001100 96
072 D001100 0
072 E001100 0
072 F001100 215
<PAGE> PAGE 53
072 G001100 0
072 H001100 0
072 I001100 0
072 J001100 18
072 K001100 0
072 L001100 3
072 M001100 0
072 N001100 0
072 O001100 0
072 P001100 0
072 Q001100 0
072 R001100 8
072 S001100 1
072 T001100 0
072 U001100 1
072 V001100 0
072 W001100 1
072 X001100 247
072 Y001100 0
072 Z001100 31
072AA001100 5387
072BB001100 0
072CC011100 2371
072CC021100 0
072DD011100 57
072DD021100 0
072EE001100 121
073 A011100 0.0131
073 A021100 0.0000
073 B001100 0.0283
073 C001100 0.0000
074 A001100 0
074 B001100 494
074 C001100 7500
074 D001100 0
074 E001100 0
074 F001100 81386
074 G001100 0
074 H001100 0
074 I001100 0
074 J001100 1269
074 K001100 0
074 L001100 41
074 M001100 2
074 N001100 90692
074 O001100 1560
074 P001100 193
074 Q001100 0
074 R011100 0
074 R021100 0
074 R031100 0
<PAGE> PAGE 54
074 R041100 14
074 S001100 0
074 T001100 88925
074 U011100 4248
074 U021100 0
074 V011100 20.93
074 V021100 0.00
074 W001100 0.0000
074 X001100 2
074 Y001100 0
075 A001100 0
075 B001100 86623
076 001100 0.00
008 A001201 MORGAN STANLEY DEAN WITTER ADVISORS INC.
008 B001201 A
008 C001201 801-42061
008 D011201 NEW YORK
008 D021201 NY
008 D031201 10048
008 A001202 TCW FUNDS MANAGEMENT, INC.
008 B001202 S
008 C001202 801-29075
008 D011202 LOS ANGELES
008 D021202 CA
008 D031202 90017
015 A001201 THE CHASE MANHATTAN BANK, N.A.
015 B001201 C
015 C011201 NEW YORK
015 C021201 NY
015 C031201 10005
015 E011201 X
024 001200 N
025 D001201 0
025 D001202 0
025 D001203 0
025 D001204 0
025 D001205 0
025 D001206 0
025 D001207 0
025 D001208 0
028 A011200 1463
028 A021200 20
028 A031200 0
028 A041200 477
028 B011200 1439
028 B021200 25
028 B031200 0
028 B041200 253
028 C011200 1581
028 C021200 10
028 C031200 0
<PAGE> PAGE 55
028 C041200 334
028 D011200 1967
028 D021200 10
028 D031200 0
028 D041200 329
028 E011200 1199
028 E021200 11
028 E031200 0
028 E041200 456
028 F011200 1246
028 F021200 231
028 F031200 0
028 F041200 532
028 G011200 8895
028 G021200 307
028 G031200 0
028 G041200 2381
028 H001200 8895
045 001200 Y
046 001200 N
047 001200 Y
048 001200 1.250
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
055 A001200 Y
055 B001200 N
056 001200 Y
057 001200 N
062 A001200 N
062 B001200 0.0
062 C001200 0.0
<PAGE> PAGE 56
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
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 B001200 N
066 C001200 N
066 D001200 Y
066 E001200 N
066 F001200 N
066 G001200 N
067 001200 N
068 A001200 N
068 B001200 Y
069 001200 N
070 A011200 Y
070 A021200 Y
070 B011200 Y
070 B021200 N
070 C011200 Y
070 C021200 N
070 D011200 N
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 N
070 K011200 Y
070 K021200 N
070 L011200 Y
<PAGE> PAGE 57
070 L021200 Y
070 M011200 Y
070 M021200 N
070 N011200 Y
070 N021200 N
070 O011200 N
070 O021200 N
070 P011200 Y
070 P021200 Y
070 Q011200 N
070 Q021200 N
070 R011200 N
070 R021200 N
071 A001200 31910
071 B001200 23639
071 C001200 21951
071 D001200 108
072 A001200 6
072 B001200 49
072 C001200 30
072 D001200 0
072 E001200 0
072 F001200 88
072 G001200 0
072 H001200 0
072 I001200 0
072 J001200 12
072 K001200 0
072 L001200 4
072 M001200 0
072 N001200 0
072 O001200 0
072 P001200 0
072 Q001200 0
072 R001200 8
072 S001200 1
072 T001200 0
072 U001200 0
072 V001200 0
072 W001200 1
072 X001200 114
072 Y001200 114
072 Z001200 79
072AA001200 502
072BB001200 0
072CC011200 1500
072CC021200 0
072DD011200 83
072DD021200 0
072EE001200 224
073 A011200 0.0444
<PAGE> PAGE 58
073 A021200 0.0000
073 B001200 0.1027
073 C001200 0.0000
074 A001200 0
074 B001200 181
074 C001200 1600
074 D001200 0
074 E001200 0
074 F001200 26388
074 G001200 0
074 H001200 0
074 I001200 0
074 J001200 203
074 K001200 30
074 L001200 79
074 M001200 0
074 N001200 28481
074 O001200 406
074 P001200 229
074 Q001200 0
074 R011200 0
074 R021200 0
074 R031200 0
074 R041200 15
074 S001200 0
074 T001200 27831
074 U011200 2259
074 U021200 0
074 V011200 12.32
074 V021200 0.00
074 W001200 0.0000
074 X001200 2
074 Y001200 0
075 A001200 0
075 B001200 23783
076 001200 0.00
008 A001301 MORGAN STANLEY DEAN WITTER ADVISORS INC.
008 B001301 A
008 C001301 801-42061
008 D011301 NEW YORK
008 D021301 NY
008 D031301 10048
015 A001301 THE BANK OF NEW YORK
015 B001301 C
015 C011301 NEW YORK
015 C021301 NY
015 C031301 10286
015 E011301 X
024 001300 N
025 D001301 0
025 D001302 0
<PAGE> PAGE 59
025 D001303 0
025 D001304 0
025 D001305 0
025 D001306 0
025 D001307 0
025 D001308 0
028 A011300 493
028 A021300 12
028 A031300 0
028 A041300 839
028 B011300 454
028 B021300 0
028 B031300 0
028 B041300 832
028 C011300 389
028 C021300 0
028 C031300 0
028 C041300 696
028 D011300 364
028 D021300 0
028 D031300 0
028 D041300 1134
028 E011300 275
028 E021300 84
028 E031300 0
028 E041300 721
028 F011300 369
028 F021300 89
028 F031300 0
028 F041300 484
028 G011300 2344
028 G021300 185
028 G031300 0
028 G041300 4706
028 H001300 2344
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
<PAGE> PAGE 60
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
066 A001300 Y
066 B001300 N
066 C001300 Y
066 D001300 N
066 E001300 N
066 F001300 N
066 G001300 N
067 001300 N
068 A001300 N
068 B001300 N
069 001300 N
070 A011300 Y
070 A021300 N
070 B011300 Y
070 B021300 N
070 C011300 N
070 C021300 N
<PAGE> PAGE 61
070 D011300 Y
070 D021300 N
070 E011300 Y
070 E021300 N
070 F011300 Y
070 F021300 N
070 G011300 Y
070 G021300 N
070 H011300 Y
070 H021300 N
070 I011300 Y
070 I021300 N
070 J011300 Y
070 J021300 Y
070 K011300 Y
070 K021300 Y
070 L011300 Y
070 L021300 Y
070 M011300 Y
070 M021300 Y
070 N011300 Y
070 N021300 N
070 O011300 N
070 O021300 N
070 P011300 Y
070 P021300 N
070 Q011300 N
070 Q021300 N
070 R011300 N
070 R021300 N
071 A001300 11065
071 B001300 12262
071 C001300 18603
071 D001300 59
072 A001300 6
072 B001300 53
072 C001300 209
072 D001300 0
072 E001300 0
072 F001300 0
072 G001300 131
072 H001300 0
072 I001300 0
072 J001300 26
072 K001300 0
072 L001300 2
072 M001300 0
072 N001300 0
072 O001300 0
072 P001300 0
072 Q001300 0
<PAGE> PAGE 62
072 R001300 8
072 S001300 1
072 T001300 0
072 U001300 1
072 V001300 0
072 W001300 3
072 X001300 172
072 Y001300 0
072 Z001300 91
072AA001300 1398
072BB001300 2674
072CC011300 0
072CC021300 2017
072DD011300 136
072DD021300 0
072EE001300 49
073 A011300 0.0698
073 A021300 0.0000
073 B001300 0.0256
073 C001300 0.0000
074 A001300 2454
074 B001300 0
074 C001300 0
074 D001300 0
074 E001300 831
074 F001300 13656
074 G001300 0
074 H001300 0
074 I001300 63
074 J001300 57
074 K001300 0
074 L001300 50
074 M001300 14
074 N001300 17125
074 O001300 0
074 P001300 20
074 Q001300 0
074 R011300 0
074 R021300 0
074 R031300 0
074 R041300 58
074 S001300 0
074 T001300 17047
074 U011300 1905
074 U021300 0
074 V011300 8.95
074 V021300 0.00
074 W001300 0.0000
074 X001300 2
074 Y001300 0
075 A001300 0
<PAGE> PAGE 63
075 B001300 21166
076 001300 0.00
025 D001401 0
025 D001402 0
025 D001403 0
025 D001404 0
025 D001405 0
025 D001406 0
025 D001407 0
025 D001408 0
074 O002000 0
074 P002000 0
074 Q002000 0
074 R012000 0
074 R022000 0
074 R032000 0
074 R042000 0
074 S002000 0
074 T002000 0
074 U012000 0
074 U022000 0
074 V012000 0.00
074 V022000 0.00
074 W002000 0.0000
074 X002000 0
074 Y002000 0
SIGNATURE BARRY FINK
TITLE VICE PRESIDENT
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
MSDW SELECT DIMENSIONS INVESTMENT SERIES
SEMI-ANNUAL FDS
THE MONEY MARKET PORTFOLIO
</LEGEND>
<CIK> 0000924394
<NAME> MSDW SELECT DIMENSIONS INVESTMENT SERIES
<SERIES>
<NUMBER> 1
<NAME> THE MONEY MARKET PORTFOLIO
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> DEC-31-1998
<PERIOD-END> JUN-30-1998
<INVESTMENTS-AT-COST> 91,687,280
<INVESTMENTS-AT-VALUE> 91,687,280
<RECEIVABLES> 490,045
<ASSETS-OTHER> 26,316
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 92,203,641
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 468,250
<TOTAL-LIABILITIES> 468,250
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 91,735,326
<SHARES-COMMON-STOCK> 91,735,326
<SHARES-COMMON-PRIOR> 84,045,331
<ACCUMULATED-NII-CURRENT> 65
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 0
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 0
<NET-ASSETS> 91,735,391
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 2,371,160
<OTHER-INCOME> 0
<EXPENSES-NET> 232,613
<NET-INVESTMENT-INCOME> 2,138,547
<REALIZED-GAINS-CURRENT> 0
<APPREC-INCREASE-CURRENT> 0
<NET-CHANGE-FROM-OPS> 2,138,547
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (2,138,545)
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 59,542,377
<NUMBER-OF-SHARES-REDEEMED> (53,990,928)
<SHARES-REINVESTED> 2,138,546
<NET-CHANGE-IN-ASSETS> 7,689,997
<ACCUMULATED-NII-PRIOR> 63
<ACCUMULATED-GAINS-PRIOR> 0
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 209,158
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 232,613
<AVERAGE-NET-ASSETS> 84,356,610
<PER-SHARE-NAV-BEGIN> 1.00
<PER-SHARE-NII> .03
<PER-SHARE-GAIN-APPREC> 0
<PER-SHARE-DIVIDEND> (.03)
<PER-SHARE-DISTRIBUTIONS> 0
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 1.0
<EXPENSE-RATIO> 0.56
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
MSDW SELECT DIMENSIONS INVESTMENT SERIES
SEMI-ANNUAL FDS
THE NORTH AMERICAN GOVERNMENT SECURITIES PORTFOLIO
</LEGEND>
<CIK> 0000924394
<NAME> MSDW SELECT DIMENSIONS INVESTMENT SERIES
<SERIES>
<NUMBER> 2
<NAME> THE NORTH AMERICAN GOVERNMENT SECURITIES PORTFOLIO
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> DEC-31-1998
<PERIOD-END> JUN-30-1998
<INVESTMENTS-AT-COST> 6,004,366
<INVESTMENTS-AT-VALUE> 6,037,903
<RECEIVABLES> 37,112
<ASSETS-OTHER> 110,255
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 6,185,270
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 25,184
<TOTAL-LIABILITIES> 25,184
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 6,108,904
<SHARES-COMMON-STOCK> 605,279
<SHARES-COMMON-PRIOR> 500,680
<ACCUMULATED-NII-CURRENT> 24,834
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> (7,189)
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 33,537
<NET-ASSETS> 6,160,086
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 162,812
<OTHER-INCOME> 0
<EXPENSES-NET> (36,263)
<NET-INVESTMENT-INCOME> 126,549
<REALIZED-GAINS-CURRENT> 3,162
<APPREC-INCREASE-CURRENT> (5,920)
<NET-CHANGE-FROM-OPS> 123,791
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (117,591)
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 180,548
<NUMBER-OF-SHARES-REDEEMED> (87,548)
<SHARES-REINVESTED> 11,599
<NET-CHANGE-IN-ASSETS> 1,068,639
<ACCUMULATED-NII-PRIOR> 15,876
<ACCUMULATED-GAINS-PRIOR> (10,351)
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 18,151
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 36,263
<AVERAGE-NET-ASSETS> 5,631,113
<PER-SHARE-NAV-BEGIN> 10.17
<PER-SHARE-NII> 0.23
<PER-SHARE-GAIN-APPREC> 0
<PER-SHARE-DIVIDEND> (0.22)
<PER-SHARE-DISTRIBUTIONS> 0
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 10.18
<EXPENSE-RATIO> 1.30
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
MSDW SELECT DIMENSIONS INVESMENT SERIES
SEMI-ANNUAL FDS
THE DIVERSIFIED INCOME PORTFOLIO
</LEGEND>
<CIK> 0000924394
<NAME> MSDW SELECT DIMENSIONS INVESTMENT SERIE
<SERIES>
<NUMBER> 3
<NAME> THE DIVERSIFIED INCOME PORTFOLIO
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> DEC-31-1998
<PERIOD-END> JUN-30-1998
<INVESTMENTS-AT-COST> 76,475,084
<INVESTMENTS-AT-VALUE> 76,666,419
<RECEIVABLES> 1,990,892
<ASSETS-OTHER> 502,955
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 79,160,266
<PAYABLE-FOR-SECURITIES> 1,048,876
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 299,839
<TOTAL-LIABILITIES> 1,348,715
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 77,946,790
<SHARES-COMMON-STOCK> 7,632,646
<SHARES-COMMON-PRIOR> 6,050,755
<ACCUMULATED-NII-CURRENT> 497,517
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> (803,026)
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 170,270
<NET-ASSETS> 77,811,551
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 2,889,569
<OTHER-INCOME> 0
<EXPENSES-NET> 172,562
<NET-INVESTMENT-INCOME> 2,717,007
<REALIZED-GAINS-CURRENT> (429,185)
<APPREC-INCREASE-CURRENT> (212,859)
<NET-CHANGE-FROM-OPS> 2,074,963
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (2,653,397)
<DISTRIBUTIONS-OF-GAINS> (99,334)
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 1,937,420
<NUMBER-OF-SHARES-REDEEMED> (624,972)
<SHARES-REINVESTED> 269,443
<NET-CHANGE-IN-ASSETS> 15,524,550
<ACCUMULATED-NII-PRIOR> 433,907
<ACCUMULATED-GAINS-PRIOR> (274,507)
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 139,526
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 172,562
<AVERAGE-NET-ASSETS> 70,341,086
<PER-SHARE-NAV-BEGIN> 10.29
<PER-SHARE-NII> 0.39
<PER-SHARE-GAIN-APPREC> (0.08)
<PER-SHARE-DIVIDEND> (0.40)
<PER-SHARE-DISTRIBUTIONS> (0.01)
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 10.19
<EXPENSE-RATIO> 0.49
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
MSDW SELECT DIMENSIONS INVESTMENT SERIES
SEMI-ANNUAL FDS
THE BALANCED GROWTH PORTFOLIO
</LEGEND>
<CIK> 0000924394
<NAME> MSDW SELECT DIMENSIONS INVESTMENT SERIE
<SERIES>
<NUMBER> 4
<NAME> THE BALANCED GROWTH PORTFOLIO
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> DEC-31-1998
<PERIOD-END> JUN-30-1998
<INVESTMENTS-AT-COST> 90,738,168
<INVESTMENTS-AT-VALUE> 94,043,015
<RECEIVABLES> 632,170
<ASSETS-OTHER> 78,306
<OTHER-ITEMS-ASSETS> 2,184
<TOTAL-ASSETS> 94,755,675
<PAYABLE-FOR-SECURITIES> 1,184,983
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 70,695
<TOTAL-LIABILITIES> 1,255,678
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 77,298,504
<SHARES-COMMON-STOCK> 5,803,938
<SHARES-COMMON-PRIOR> 4,745,175
<ACCUMULATED-NII-CURRENT> 217,276
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 12,679,370
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 3,304,847
<NET-ASSETS> 93,499,997
<DIVIDEND-INCOME> 448,275
<INTEREST-INCOME> 956,917
<OTHER-INCOME> 0
<EXPENSES-NET> 301,050
<NET-INVESTMENT-INCOME> 1,104,142
<REALIZED-GAINS-CURRENT> 12,708,577
<APPREC-INCREASE-CURRENT> (5,647,976)
<NET-CHANGE-FROM-OPS> 8,164,743
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 1,004,317
<DISTRIBUTIONS-OF-GAINS> 1,884,145
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 1,200,906
<NUMBER-OF-SHARES-REDEEMED> 322,624
<SHARES-REINVESTED> 180,481
<NET-CHANGE-IN-ASSETS> 22,176,561
<ACCUMULATED-NII-PRIOR> 117,451
<ACCUMULATED-GAINS-PRIOR> 1,854,938
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 266,299
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 301,050
<AVERAGE-NET-ASSETS> 83,291,261
<PER-SHARE-NAV-BEGIN> 15.03
<PER-SHARE-NII> 0.20
<PER-SHARE-GAIN-APPREC> 1.41
<PER-SHARE-DIVIDEND> (0.19)
<PER-SHARE-DISTRIBUTIONS> (0.34)
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 16.11
<EXPENSE-RATIO> 0.73
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
MSDW SELECT DIMENSIONS INVESTMENT SERIES
SEMI-ANNUAL FDS
THE UTILITIES PORTFOLIO
</LEGEND>
<CIK> 0000924394
<NAME> MSDW SELECT DIMENSIONS INVESTMENT SERIES
<SERIES>
<NUMBER> 5
<NAME> THE UTILITIES PORTFOLIO
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> DEC-31-1998
<PERIOD-END> JUN-30-1998
<INVESTMENTS-AT-COST> 49,205,579
<INVESTMENTS-AT-VALUE> 64,605,087
<RECEIVABLES> 211,489
<ASSETS-OTHER> 2,207
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 64,818,783
<PAYABLE-FOR-SECURITIES> 514,313
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 63,907
<TOTAL-LIABILITIES> 578,220
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 47,726,273
<SHARES-COMMON-STOCK> 3,710,104
<SHARES-COMMON-PRIOR> 3,205,930
<ACCUMULATED-NII-CURRENT> 122,522
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 992,260
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 15,399,508
<NET-ASSETS> 64,240,563
<DIVIDEND-INCOME> 746,669
<INTEREST-INCOME> 170,904
<OTHER-INCOME> 0
<EXPENSES-NET> 205,568
<NET-INVESTMENT-INCOME> 712,005
<REALIZED-GAINS-CURRENT> 992,329
<APPREC-INCREASE-CURRENT> 4,647,078
<NET-CHANGE-FROM-OPS> 6,351,412
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (670,761)
<DISTRIBUTIONS-OF-GAINS> (698,541)
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 773,674
<NUMBER-OF-SHARES-REDEEMED> (350,934)
<SHARES-REINVESTED> 81,434
<NET-CHANGE-IN-ASSETS> 13,474,618
<ACCUMULATED-NII-PRIOR> 81,278
<ACCUMULATED-GAINS-PRIOR> 698,472
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 186,939
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 205,568
<AVERAGE-NET-ASSETS> 57,996,509
<PER-SHARE-NAV-BEGIN> 15.84
<PER-SHARE-NII> 0.21
<PER-SHARE-GAIN-APPREC> 1.66
<PER-SHARE-DIVIDEND> (0.20)
<PER-SHARE-DISTRIBUTIONS> (0.19)
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 17.32
<EXPENSE-RATIO> 0.71
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
MSDW SELECT IMENSIONS INVESTMENT SERIES
SEMI-ANNUAL FDS
THE DIVIDEND GROWTH PORTFOLIO
</LEGEND>
<CIK> 0000924394
<NAME> MSDW SELECT DIMENSIONS INVESTMENT SERIES
<SERIES>
<NUMBER> 6
<NAME> THE DIVIDEND GROWTH PORTFOLIO
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> DEC-31-1998
<PERIOD-END> JUN-30-1998
<INVESTMENTS-AT-COST> 534,819,597
<INVESTMENTS-AT-VALUE> 651,857,603
<RECEIVABLES> 1,707,088
<ASSETS-OTHER> 12,031
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 653,576,722
<PAYABLE-FOR-SECURITIES> 695,032
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 507,962
<TOTAL-LIABILITIES> 1,202,994
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 510,790,870
<SHARES-COMMON-STOCK> 30,818,898
<SHARES-COMMON-PRIOR> 26,484,381
<ACCUMULATED-NII-CURRENT> 788,824
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 23,756,028
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 117,038,006
<NET-ASSETS> 652,373,728
<DIVIDEND-INCOME> 7,249,264
<INTEREST-INCOME> 160,728
<OTHER-INCOME> 0
<EXPENSES-NET> 1,880,857
<NET-INVESTMENT-INCOME> 5,529,135
<REALIZED-GAINS-CURRENT> 24,254,342
<APPREC-INCREASE-CURRENT> 44,667,866
<NET-CHANGE-FROM-OPS> 74,451,343
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (5,524,897)
<DISTRIBUTIONS-OF-GAINS> (26,160,355)
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 4,533,815
<NUMBER-OF-SHARES-REDEEMED> (1,701,440)
<SHARES-REINVESTED> 1,502,142
<NET-CHANGE-IN-ASSETS> 133,954,623
<ACCUMULATED-NII-PRIOR> 784,586
<ACCUMULATED-GAINS-PRIOR> 25,662,041
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 1,825,508
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 1,880,857
<AVERAGE-NET-ASSETS> 598,458,787
<PER-SHARE-NAV-BEGIN> 19.57
<PER-SHARE-NII> 0.20
<PER-SHARE-GAIN-APPREC> 2.50
<PER-SHARE-DIVIDEND> (0.20)
<PER-SHARE-DISTRIBUTIONS> (0.90)
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 21.17
<EXPENSE-RATIO> 0.63
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
MSDW SELECT DIMENSIONS INVESTMENT SERIES
SEMI-ANNUAL FDS
THE VALUE-ADDED PORTFOLIO
</LEGEND>
<CIK> 0000924394
<NAME> MSDW SELECT DIMENSIONS INVSTMENT SERIES
<SERIES>
<NUMBER> 7
<NAME> THE VALUE-ADDED PORTFOLIO
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> DEC-31-1998
<PERIOD-END> JUN-30-1998
<INVESTMENTS-AT-COST> 127,083,699
<INVESTMENTS-AT-VALUE> 168,472,052
<RECEIVABLES> 1,675,397
<ASSETS-OTHER> 2,508
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 170,149,957
<PAYABLE-FOR-SECURITIES> 1,081,374
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 124,750
<TOTAL-LIABILITIES> 1,206,124
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 125,693,902
<SHARES-COMMON-STOCK> 8,829,587
<SHARES-COMMON-PRIOR> 8,046,487
<ACCUMULATED-NII-CURRENT> 165,041
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 1,696,537
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 41,388,353
<NET-ASSETS> 168,943,833
<DIVIDEND-INCOME> 1,179,322
<INTEREST-INCOME> 185,903
<OTHER-INCOME> 0
<EXPENSES-NET> 430,741
<NET-INVESTMENT-INCOME> 934,484
<REALIZED-GAINS-CURRENT> 1,807,914
<APPREC-INCREASE-CURRENT> 13,461,350
<NET-CHANGE-FROM-OPS> 16,203,748
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (939,378)
<DISTRIBUTIONS-OF-GAINS> (2,322,935)
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 1,195,324
<NUMBER-OF-SHARES-REDEEMED> (585,138)
<SHARES-REINVESTED> 172,914
<NET-CHANGE-IN-ASSETS> 27,627,660
<ACCUMULATED-NII-PRIOR> 169,935
<ACCUMULATED-GAINS-PRIOR> 2,211,558
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 393,819
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 430,741
<AVERAGE-NET-ASSETS> 158,832,903
<PER-SHARE-NAV-BEGIN> 17.56
<PER-SHARE-NII> 0.11
<PER-SHARE-GAIN-APPREC> 1.84
<PER-SHARE-DIVIDEND> (.11)
<PER-SHARE-DISTRIBUTIONS> (.27)
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 19.13
<EXPENSE-RATIO> (.55)
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
MSDW SELET DIMENSIONS INVETMENT SERIES
SEMI-ANNUAL FDS
THE GROWTH PORTFOLIO
</LEGEND>
<CIK> 0000924394
<NAME> MSDW SELECT DIMENSIONS INVESTMENT SERIES
<SERIES>
<NUMBER> 8
<NAME> THE GROWTH PORTFOLIO
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> DEC-31-1998
<PERIOD-END> JUN-30-1998
<INVESTMENTS-AT-COST> 48,118,606
<INVESTMENTS-AT-VALUE> 49,861,124
<RECEIVABLES> 548,407
<ASSETS-OTHER> 15,934
<OTHER-ITEMS-ASSETS> 2,184
<TOTAL-ASSETS> 50,427,649
<PAYABLE-FOR-SECURITIES> 714,927
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 95,015
<TOTAL-LIABILITIES> 809,942
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 39,093,045
<SHARES-COMMON-STOCK> 2,786,278
<SHARES-COMMON-PRIOR> 2,434,295
<ACCUMULATED-NII-CURRENT> (3,965)
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 8,786,109
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 1,742,518
<NET-ASSETS> 49,617,707
<DIVIDEND-INCOME> 209,979
<INTEREST-INCOME> 47,527
<OTHER-INCOME> 0
<EXPENSES-NET> 261,471
<NET-INVESTMENT-INCOME> (3,965)
<REALIZED-GAINS-CURRENT> 8,835,101
<APPREC-INCREASE-CURRENT> (4,322,513)
<NET-CHANGE-FROM-OPS> 4,508,623
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 0
<DISTRIBUTIONS-OF-GAINS> 1,299,815
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 519,289
<NUMBER-OF-SHARES-REDEEMED> 242,965
<SHARES-REINVESTED> 75,659
<NET-CHANGE-IN-ASSETS> 6,097,786
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 1,250,823
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 186,281
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 261,471
<AVERAGE-NET-ASSETS> 46,075,531
<PER-SHARE-NAV-BEGIN> 16.56
<PER-SHARE-NII> 0
<PER-SHARE-GAIN-APPREC> 1.74
<PER-SHARE-DIVIDEND> 0
<PER-SHARE-DISTRIBUTIONS> (0.49)
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 17.81
<EXPENSE-RATIO> 1.14
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
MSDW SELECT DIMENSIONS INVESTMENT SERIES
SEMI-ANNUAL FDS
THE AMERICAN VALUE PORTFOLIO
</LEGEND>
<CIK> 0000924394
<NAME> MSDW SELECT DIMENSIONS INVESTMENT SERIES
<SERIES>
<NUMBER> 9
<NAME> THE AMERICAN VALUE PORTFOLIO
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> DEC-31-1998
<PERIOD-END> JUN-30-1998
<INVESTMENTS-AT-COST> 254,000,264
<INVESTMENTS-AT-VALUE> 305,374,916
<RECEIVABLES> 422,239
<ASSETS-OTHER> 3,076
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 305,800,231
<PAYABLE-FOR-SECURITIES> 704,975
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 197,124
<TOTAL-LIABILITIES> 902,099
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 225,649,584
<SHARES-COMMON-STOCK> 14,182,221
<SHARES-COMMON-PRIOR> 11,680,635
<ACCUMULATED-NII-CURRENT> 180,700
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 27,693,196
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 51,374,652
<NET-ASSETS> 304,898,132
<DIVIDEND-INCOME> 844,876
<INTEREST-INCOME> 589,783
<OTHER-INCOME> 0
<EXPENSES-NET> (871,798)
<NET-INVESTMENT-INCOME> 562,861
<REALIZED-GAINS-CURRENT> 24,634,735
<APPREC-INCREASE-CURRENT> 23,694,174
<NET-CHANGE-FROM-OPS> 48,891,770
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (548,686)
<DISTRIBUTIONS-OF-GAINS> (24,703,905)
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 2,140,326
<NUMBER-OF-SHARES-REDEEMED> (902,205)
<SHARES-REINVESTED> 1,263,465
<NET-CHANGE-IN-ASSETS> 74,884,498
<ACCUMULATED-NII-PRIOR> 166,525
<ACCUMULATED-GAINS-PRIOR> 27,762,359
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 826,237
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> (871,798)
<AVERAGE-NET-ASSETS> 266,586,905
<PER-SHARE-NAV-BEGIN> 19.69
<PER-SHARE-NII> 0.04
<PER-SHARE-GAIN-APPREC> 3.76
<PER-SHARE-DIVIDEND> (0.05)
<PER-SHARE-DISTRIBUTIONS> (1.94)
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 21.50
<EXPENSE-RATIO> 0.66
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
MSDW SELECT DIMENSIONS INVESTMENT SERIES
SEMI-ANNAUL FDS
THE GLOBAL EQUITY PORTFOLIO
</LEGEND>
<CIK> 0000924394
<NAME> MSDW SELECT DIMENSIONS INVESTMENT SERIES
<SERIES>
<NUMBER> 10
<NAME> THE GLOBAL EQUITY PORTFOLIO
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> DEC-31-1998
<PERIOD-END> JUN-30-1998
<INVESTMENTS-AT-COST> 102,982,518
<INVESTMENTS-AT-VALUE> 124,046,166
<RECEIVABLES> 459,589
<ASSETS-OTHER> 774,747
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 125,280,502
<PAYABLE-FOR-SECURITIES> 1,122,555
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 152,682
<TOTAL-LIABILITIES> 1,275,237
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 103,022,300
<SHARES-COMMON-STOCK> 8,520,955
<SHARES-COMMON-PRIOR> 7,882,702
<ACCUMULATED-NII-CURRENT> 168,799
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> (245,817)
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 21,059,983
<NET-ASSETS> 124,005,265
<DIVIDEND-INCOME> 1,256,769
<INTEREST-INCOME> 210,911
<OTHER-INCOME> 0
<EXPENSES-NET> 622,554
<NET-INVESTMENT-INCOME> 845,126
<REALIZED-GAINS-CURRENT> 1,088,451
<APPREC-INCREASE-CURRENT> 11,961,068
<NET-CHANGE-FROM-OPS> 13,894,645
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (986,332)
<DISTRIBUTIONS-OF-GAINS> (422,276)
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 1,471,727
<NUMBER-OF-SHARES-REDEEMED> (930,549)
<SHARES-REINVESTED> 97,075
<NET-CHANGE-IN-ASSETS> 21,775,799
<ACCUMULATED-NII-PRIOR> 310,005
<ACCUMULATED-GAINS-PRIOR> (911,992)
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 567,990
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 622,554
<AVERAGE-NET-ASSETS> 114,539,471
<PER-SHARE-NAV-BEGIN> 12.97
<PER-SHARE-NII> 0.10
<PER-SHARE-GAIN-APPREC> 1.65
<PER-SHARE-DIVIDEND> (0.12)
<PER-SHARE-DISTRIBUTIONS> (0.05)
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 14.55
<EXPENSE-RATIO> 1.10
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
MSDW SELECT DIMENSIONS INVESTMENT SERIES
SEMI-ANNUAL FDS
THE DEVELOPING GROWTH PORTFOLIO
</LEGEND>
<CIK> 0000924394
<NAME> MSDW SELECT DIMENSIONS INVESTMENT SERIES
<SERIES>
<NUMBER> 11
<NAME> THE DEVELOPING GROWTH PORTFOLIO
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> DEC-31-1998
<PERIOD-END> JUN-30-1998
<INVESTMENTS-AT-COST> 73,689,865
<INVESTMENTS-AT-VALUE> 89,380,250
<RECEIVABLES> 1,309,256
<ASSETS-OTHER> 2,395
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 90,691,901
<PAYABLE-FOR-SECURITIES> 1,682,275
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 84,932
<TOTAL-LIABILITIES> 1,767,207
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 67,941,609
<SHARES-COMMON-STOCK> 4,247,673
<SHARES-COMMON-PRIOR> 4,315,931
<ACCUMULATED-NII-CURRENT> 10,910
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 5,281,790
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 15,690,385
<NET-ASSETS> 88,924,694
<DIVIDEND-INCOME> 96,496
<INTEREST-INCOME> 182,243
<OTHER-INCOME> 0
<EXPENSES-NET> (247,366)
<NET-INVESTMENT-INCOME> 31,373
<REALIZED-GAINS-CURRENT> 5,387,450
<APPREC-INCREASE-CURRENT> 2,371,088
<NET-CHANGE-FROM-OPS> 7,789,911
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (56,544)
<DISTRIBUTIONS-OF-GAINS> (120,683)
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 443,081
<NUMBER-OF-SHARES-REDEEMED> (520,460)
<SHARES-REINVESTED> 9,121
<NET-CHANGE-IN-ASSETS> 6,234,282
<ACCUMULATED-NII-PRIOR> 36,082
<ACCUMULATED-GAINS-PRIOR> 15,022
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 214,777
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> (247,366)
<AVERAGE-NET-ASSETS> 86,622,885
<PER-SHARE-NAV-BEGIN> 19.16
<PER-SHARE-NII> 0
<PER-SHARE-GAIN-APPREC> 1.81
<PER-SHARE-DIVIDEND> (0.01)
<PER-SHARE-DISTRIBUTIONS> (0.03)
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 20.93
<EXPENSE-RATIO> 0.58
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
MSDW SELECT DIMENSIONS INVESTMENT SERIES
SEMI-ANNUAL FDS
THE MID-CAP GROWTH PORTFOLIO
</LEGEND>
<CIK> 0000924394
<NAME> MSDW SELECT DIMENSION INVESTMENT SERIES
<SERIES>
<NUMBER> 12
<NAME> THE MID-CAP GROWTH PORTFOLIO
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> DEC-31-1998
<PERIOD-END> JUN-30-1998
<INVESTMENTS-AT-COST> 25,122,196
<INVESTMENTS-AT-VALUE> 28,168,877
<RECEIVABLES> 302,143
<ASSETS-OTHER> 10,243
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 28,481,263
<PAYABLE-FOR-SECURITIES> 634,402
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 16,035
<TOTAL-LIABILITIES> 650,437
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 24,531,980
<SHARES-COMMON-STOCK> 2,259,041
<SHARES-COMMON-PRIOR> 1,687,227
<ACCUMULATED-NII-CURRENT> 15,671
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 236,494
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 3,046,681
<NET-ASSETS> 27,830,826
<DIVIDEND-INCOME> 29,678
<INTEREST-INCOME> 49,125
<OTHER-INCOME> 0
<EXPENSES-NET> 0
<NET-INVESTMENT-INCOME> 78,803
<REALIZED-GAINS-CURRENT> 502,450
<APPREC-INCREASE-CURRENT> 1,499,965
<NET-CHANGE-FROM-OPS> 2,081,218
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (82,880)
<DISTRIBUTIONS-OF-GAINS> (224,094)
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 746,901
<NUMBER-OF-SHARES-REDEEMED> (201,620)
<SHARES-REINVESTED> 26,533
<NET-CHANGE-IN-ASSETS> 8,594,791
<ACCUMULATED-NII-PRIOR> 19,748
<ACCUMULATED-GAINS-PRIOR> (41,862)
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 88,455
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 114,389
<AVERAGE-NET-ASSETS> 23,783,497
<PER-SHARE-NAV-BEGIN> 11.40
<PER-SHARE-NII> 0.04
<PER-SHARE-GAIN-APPREC> 1.02
<PER-SHARE-DIVIDEND> (0.04)
<PER-SHARE-DISTRIBUTIONS> (0.10)
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 12.32
<EXPENSE-RATIO> 0.97
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
MSDW SELECT DIMENSIONS INVESTMENT SREIES
SEMI-ANNUAL FDS
THE EMERGING MARKETS PORTGOLIO
</LEGEND>
<CIK> 0000924394
<NAME> MSDW SELECT DIMENSIONS INVESTMENT SERIES
<SERIES>
<NUMBER> 13
<NAME> THE EMERGING MARKETS PORTFOLIO
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> DEC-31-1998
<PERIOD-END> JUN-30-1998
<INVESTMENTS-AT-COST> 16,565,403
<INVESTMENTS-AT-VALUE> 14,550,427
<RECEIVABLES> 106,677
<ASSETS-OTHER> 13,858
<OTHER-ITEMS-ASSETS> 2,454,389
<TOTAL-ASSETS> 17,125,351
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 77,936
<TOTAL-LIABILITIES> 77,936
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 21,287,039
<SHARES-COMMON-STOCK> 1,905,085
<SHARES-COMMON-PRIOR> 2,105,876
<ACCUMULATED-NII-CURRENT> 40,338
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> (2,262,684)
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> (2,017,278)
<NET-ASSETS> 17,047,415
<DIVIDEND-INCOME> 209,419
<INTEREST-INCOME> 52,885
<OTHER-INCOME> 0
<EXPENSES-NET> 171,758
<NET-INVESTMENT-INCOME> 90,546
<REALIZED-GAINS-CURRENT> (1,266,091)
<APPREC-INCREASE-CURRENT> (3,229,549)
<NET-CHANGE-FROM-OPS> (4,405,094)
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 135,716
<DISTRIBUTIONS-OF-GAINS> 48,815
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 223,442
<NUMBER-OF-SHARES-REDEEMED> (442,007)
<SHARES-REINVESTED> 17,774
<NET-CHANGE-IN-ASSETS> (6,767,220)
<ACCUMULATED-NII-PRIOR> 85,508
<ACCUMULATED-GAINS-PRIOR> (888,221)
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 131,199
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 171,758
<AVERAGE-NET-ASSETS> 21,165,730
<PER-SHARE-NAV-BEGIN> 11.31
<PER-SHARE-NII> 0.05
<PER-SHARE-GAIN-APPREC> (2.31)
<PER-SHARE-DIVIDEND> (0.07)
<PER-SHARE-DISTRIBUTIONS> (0.03)
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 8.95
<EXPENSE-RATIO> 1.64
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
