<PAGE> PAGE 1
000 A000000 01/31/95
000 C000000 0000894632
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 PAINEWEBBER SECURITIES TRUST
001 B000000 811-7374
001 C000000 2127131074
002 A000000 1285 AVE. OF THE AMERICAS
002 B000000 NEW YORK
002 C000000 NY
002 D010000 10019
003 000000 N
004 000000 N
005 000000 N
006 000000 N
007 A000000 Y
007 B000000 2
007 C010100 1
007 C010200 2
007 C020200 PAINEWEBBER SMALL CAP VALUE FUND
007 C030200 N
007 C010300 3
007 C010400 4
007 C010500 5
007 C010600 6
007 C010700 7
007 C010800 8
007 C010900 9
007 C011000 10
020 A000001 PCS SECURITIES
020 B000001 94-3091854
020 C000001 9
020 A000002 ROCHDALE SEC CORP.
020 B000002 13-3360814
020 C000002 8
020 A000003 ONEIL WILLIAM & CO
020 B000003 95-2269163
020 C000003 8
020 A000004 INSTINET
020 B000004 13-3443395
020 C000004 6
020 A000005 ALEX BROWN & SONS INC.
020 B000005 52-1319768
020 C000005 3
020 A000006 EDWARDS A G & SONS INC.
020 B000006 43-0895447
<PAGE> PAGE 2
020 C000006 3
020 A000007 MORGAN STANLEY & CO.
020 B000007 13-2655998
020 C000007 3
020 A000008 BREAN MURRAY
020 B000008 13-2760052
020 C000008 2
020 A000009 S.R.G. ASSOC.
020 C000009 2
020 A000010 HAMBRECHT & QUIST
020 B000010 94-2856935
020 C000010 2
021 000000 70
022 A000001 DAIWA
022 B000001 13-5680329
022 C000001 268564
022 D000001 0
022 A000002 SALOMON BROTHERS INC.
022 B000002 13-3082694
022 C000002 14839
022 D000002 0
022 A000003 SMITH BARNEY SHEARSON INC
022 C000003 11905
022 D000003 859
022 A000004 NOMURA SECURITIES INTL INC
022 B000004 13-2642206
022 C000004 8667
022 D000004 0
022 A000005 FIRST CHICAGO CAPITAL MARKETS
022 B000005 36-3595942
022 C000005 7875
022 D000005 0
022 A000006 STATE STREET BANK AND TRUST CO.
022 B000006 04-1867445
022 C000006 6880
022 D000006 0
022 A000007 YAMAICHI SECURITIES INC
022 B000007 13-5659656
022 C000007 2886
022 D000007 0
022 A000008 CITICORP SECURITIES MARKETS INC.
022 B000008 13-5266470
022 C000008 1653
022 D000008 0
022 A000009 GOLDMAN SACHS
022 B000009 13-5108880
022 C000009 1454
022 D000009 0
022 A000010 MERRILL LYNCH PIERCE FENNER &
022 B000010 13-5674085
022 C000010 276
<PAGE> PAGE 3
022 D000010 560
023 C000000 325788
023 D000000 3606
026 A000000 N
026 B000000 N
026 C000000 N
026 D000000 Y
026 E000000 N
026 F000000 N
026 G010000 N
026 G020000 N
026 H000000 N
027 000000 Y
077 A000000 N
078 000000 N
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
086 F010000 0
086 F020000 0
008 A000201 MITCHELL HUTCHINS ASSET MANAGEMENT, INC.
008 B000201 A
008 C000201 801-13219
008 D010201 NEW YORK
008 D020201 NY
008 D030201 10019
008 A000202 QUEST ADVISORY CORP.
008 B000202 S
008 C000202 801-8268
008 D010202 NEW YORK
008 D020202 NY
008 D030202 10019
010 A000201 MITCHELL HUTCHINS ASSET MANAGEMENT, INC.
010 B000201 801-13219
010 C010201 NEW YORK
010 C020201 NY
010 C030201 10019
011 A000201 PAINEWEBBER INC.
011 B000201 8-16267
011 C010201 NEW YORK
011 C020201 NY
011 C030201 10019
012 A000201 PROVIDENT FINANCIAL PROCESSING CORP.
012 B000201 84-0000
<PAGE> PAGE 4
012 C010201 WILMINGTON
012 C020201 DE
012 C030201 19809
013 A000201 PRICE WATERHOUSE
013 B010201 NEW YORK
013 B020201 NY
013 B030201 10022
014 A000201 PAINEWEBBER INC.
014 B000201 8-16267
014 A000202 MITCHELL HUTCHINS ASSET MANAGEMENT INC.
014 B000202 8-21901
015 A000201 STATE STREET BANK & TRUST CO.
015 B000201 C
015 C010201 NORTH QUINCY
015 C020201 MA
015 C030201 02171
015 E010201 X
018 000200 Y
019 A000200 Y
019 B000200 36
019 C000200 PAINEWEBBE
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 865
028 A020200 0
028 A030200 0
028 A040200 2892
028 B010200 469
028 B020200 0
028 B030200 0
028 B040200 2575
028 C010200 692
028 C020200 3553
028 C030200 0
028 C040200 3214
028 D010200 456
028 D020200 0
028 D030200 0
028 D040200 2516
028 E010200 565
028 E020200 542
028 E030200 0
028 E040200 2565
028 F010200 1288
<PAGE> PAGE 5
028 F020200 0
028 F030200 0
028 F040200 3191
028 G010200 4335
028 G020200 4095
028 G030200 0
028 G040200 16953
028 H000200 855
029 000200 Y
030 A000200 11
030 B000200 4.50
030 C000200 0.00
031 A000200 6
031 B000200 0
032 000200 0
033 000200 5
034 000200 Y
035 000200 189
036 A000200 Y
036 B000200 0
037 000200 N
038 000200 0
039 000200 N
040 000200 Y
041 000200 Y
042 A000200 0
042 B000200 0
042 C000200 0
042 D000200 0
042 E000200 0
042 F000200 0
042 G000200 0
042 H000200 100
043 000200 353
044 000200 0
045 000200 Y
046 000200 Y
047 000200 Y
048 000200 1.000
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
<PAGE> PAGE 6
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
049 000200 N
050 000200 N
051 000200 N
052 000200 Y
053 A000200 N
054 A000200 Y
054 B000200 Y
054 C000200 Y
054 D000200 N
054 E000200 N
054 F000200 N
054 G000200 Y
054 H000200 Y
054 I000200 N
054 J000200 Y
054 K000200 N
054 L000200 N
054 M000200 Y
054 N000200 Y
054 O000200 Y
055 A000200 Y
055 B000200 N
056 000200 N
057 000200 N
058 A000200 N
059 000200 Y
060 A000200 Y
060 B000200 Y
061 000200 1000
062 A000200 N
062 B000200 0.0
062 C000200 0.0
062 D000200 0.0
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
<PAGE> PAGE 7
062 M000200 0.0
062 N000200 0.0
062 O000200 0.0
062 P000200 0.0
062 Q000200 0.0
062 R000200 0.0
063 A000200 0
063 B000200 0.0
066 A000200 Y
066 B000200 N
066 C000200 Y
066 D000200 N
066 E000200 N
066 F000200 N
066 G000200 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 N
070 I020200 N
070 J010200 Y
070 J020200 N
070 K010200 Y
070 K020200 N
070 L010200 Y
070 L020200 N
070 M010200 N
070 M020200 N
070 N010200 Y
070 N020200 N
070 O010200 Y
070 O020200 N
070 P010200 N
070 P020200 N
<PAGE> PAGE 8
070 Q010200 Y
070 Q020200 N
070 R010200 Y
070 R020200 N
071 A000200 6626
071 B000200 17889
071 C000200 77552
071 D000200 9
072 A000200 6
072 B000200 227
072 C000200 808
072 D000200 0
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072 F000200 435
072 G000200 0
072 H000200 0
072 I000200 71
072 J000200 64
072 K000200 13
072 L000200 31
072 M000200 5
072 N000200 45
072 O000200 0
072 P000200 0
072 Q000200 0
072 R000200 21
072 S000200 29
072 T000200 353
072 U000200 25
072 V000200 0
072 W000200 4
072 X000200 1096
072 Y000200 0
072 Z000200 -61
072AA000200 894
072BB000200 153
072CC010200 1180
072CC020200 0
072DD010200 0
072DD020200 0
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073 A010200 0.0000
073 A020200 0.0000
073 B000200 0.5200
073 C000200 0.0000
074 A000200 0
074 B000200 3581
074 C000200 4924
074 D000200 0
074 E000200 0
074 F000200 72765
<PAGE> PAGE 9
074 G000200 0
074 H000200 0
074 I000200 0
074 J000200 138
074 K000200 0
074 L000200 136
074 M000200 207
074 N000200 81751
074 O000200 170
074 P000200 129
074 Q000200 0
074 R010200 0
074 R020200 0
074 R030200 0
074 R040200 774
074 S000200 0
074 T000200 80678
074 U010200 2050
074 U020200 6073
074 V010200 0.00
074 V020200 0.00
074 W000200 0.0000
074 X000200 11579
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SIGNATURE JULIAN SLUYTERS
TITLE TREASURER
[ARTICLE] 6
[CIK] 0000894632
[NAME] PW SMALL CAP VALUE FUND
[SERIES]
[NUMBER] 1
[NAME] CLASS A
[MULTIPLIER] 1,000
<TABLE>
<S> <C>
[PERIOD-TYPE] 6-MOS
[FISCAL-YEAR-END] JUL-31-1995
[PERIOD-START] AUG-01-1995
[PERIOD-END] JAN-31-1995
[INVESTMENTS-AT-COST] 20,798
[INVESTMENTS-AT-VALUE] 20,657
[RECEIVABLES] 70
[ASSETS-OTHER] 38
[OTHER-ITEMS-ASSETS] 14
[TOTAL-ASSETS] 20,779
[PAYABLE-FOR-SECURITIES] 43
[SENIOR-LONG-TERM-DEBT] 0
[OTHER-ITEMS-LIABILITIES] 230
[TOTAL-LIABILITIES] 273
[SENIOR-EQUITY] 0
[PAID-IN-CAPITAL-COMMON] 20,623
[SHARES-COMMON-STOCK] 8,123
[SHARES-COMMON-PRIOR] 10,016
[ACCUMULATED-NII-CURRENT] 0
[OVERDISTRIBUTION-NII] (15)
[ACCUMULATED-NET-GAINS] 40
[OVERDISTRIBUTION-GAINS] 0
[ACCUM-APPREC-OR-DEPREC] (142)
[NET-ASSETS] 20,506
[DIVIDEND-INCOME] 58
[INTEREST-INCOME] 205
[OTHER-INCOME] 0
[EXPENSES-NET] (216)
[NET-INVESTMENT-INCOME] 47
[REALIZED-GAINS-CURRENT] 188
[APPREC-INCREASE-CURRENT] 300
[NET-CHANGE-FROM-OPS] 535
[EQUALIZATION] 0
[DISTRIBUTIONS-OF-INCOME] 0
[DISTRIBUTIONS-OF-GAINS] (1,100)
[DISTRIBUTIONS-OTHER] 0
[NUMBER-OF-SHARES-SOLD] 84
[NUMBER-OF-SHARES-REDEEMED] (360)
[SHARES-REINVESTED] 102
[NET-CHANGE-IN-ASSETS] (2,731)
[ACCUMULATED-NII-PRIOR] 0
[ACCUMULATED-GAINS-PRIOR] 41
[OVERDISTRIB-NII-PRIOR] 0
[OVERDIST-NET-GAINS-PRIOR] 0
[GROSS-ADVISORY-FEES] 110
[INTEREST-EXPENSE] 0
[GROSS-EXPENSE] 216
[AVERAGE-NET-ASSETS] 21,602
[PER-SHARE-NAV-BEGIN] 10.27
[PER-SHARE-NII] 0.02
[PER-SHARE-GAIN-APPREC] 0.23
[PER-SHARE-DIVIDEND] 0
[PER-SHARE-DISTRIBUTIONS] (0.52)
[RETURNS-OF-CAPITAL] 0
[PER-SHARE-NAV-END] 10.00
[EXPENSE-RATIO] 1.95
[AVG-DEBT-OUTSTANDING] 0
[AVG-DEBT-PER-SHARE] 0
</TABLE>
[ARTICLE] 6
[CIK] 0000894632
[NAME] PW SMALL CAP VALUE FUND
[SERIES]
[NUMBER] 2
[NAME] CLASS B
[MULTIPLIER] 1,000
<TABLE>
<S> <C>
[PERIOD-TYPE] 6-MOS
[FISCAL-YEAR-END] JUL-31-1995
[PERIOD-START] AUG-01-1995
[PERIOD-END] JAN-31-1995
[INVESTMENTS-AT-COST] 46,968
[INVESTMENTS-AT-VALUE] 46,648
[RECEIVABLES] 158
[ASSETS-OTHER] 86
[OTHER-ITEMS-ASSETS] 33
[TOTAL-ASSETS] 46,925
[PAYABLE-FOR-SECURITIES] 98
[SENIOR-LONG-TERM-DEBT] 0
[OTHER-ITEMS-LIABILITIES] 518
[TOTAL-LIABILITIES] 616
[SENIOR-EQUITY] 0
[PAID-IN-CAPITAL-COMMON] 46,572
[SHARES-COMMON-STOCK] 4,673
[SHARES-COMMON-PRIOR] 5,661
[ACCUMULATED-NII-CURRENT] 0
[OVERDISTRIBUTION-NII] (35)
[ACCUMULATED-NET-GAINS] 91
[OVERDISTRIBUTION-GAINS] 0
[ACCUM-APPREC-OR-DEPREC] (319)
[NET-ASSETS] 46,309
[DIVIDEND-INCOME] 130
[INTEREST-INCOME] 464
[OTHER-INCOME] 0
[EXPENSES-NET] (676)
[NET-INVESTMENT-INCOME] (82)
[REALIZED-GAINS-CURRENT] 425
[APPREC-INCREASE-CURRENT] 677
[NET-CHANGE-FROM-OPS] 1020
[EQUALIZATION] 0
[DISTRIBUTIONS-OF-INCOME] 0
[DISTRIBUTIONS-OF-GAINS] (2,545)
[DISTRIBUTIONS-OTHER] 0
[NUMBER-OF-SHARES-SOLD] 200
[NUMBER-OF-SHARES-REDEEMED] (915)
[SHARES-REINVESTED] 239
[NET-CHANGE-IN-ASSETS] (6,417)
[ACCUMULATED-NII-PRIOR] 0
[ACCUMULATED-GAINS-PRIOR] 34
[OVERDISTRIB-NII-PRIOR] 0
[OVERDIST-NET-GAINS-PRIOR] 0
[GROSS-ADVISORY-FEES] 249
[INTEREST-EXPENSE] 0
[GROSS-EXPENSE] 676
[AVERAGE-NET-ASSETS] 49,558
[PER-SHARE-NAV-BEGIN] 10.22
[PER-SHARE-NII] (0.02)
[PER-SHARE-GAIN-APPREC] 0.23
[PER-SHARE-DIVIDEND] 0
[PER-SHARE-DISTRIBUTIONS] (0.52)
[RETURNS-OF-CAPITAL] 0
[PER-SHARE-NAV-END] 9.91
[EXPENSE-RATIO] 2.71
[AVG-DEBT-OUTSTANDING] 0
[AVG-DEBT-PER-SHARE] 0
</TABLE>
[ARTICLE] 6
[CIK] 0000894632
[NAME] PW SMALL CAP VALUE FUND
[SERIES]
[NUMBER] 3
[NAME] CLASS D
[MULTIPLIER] 1,000
<TABLE>
<S> <C>
[PERIOD-TYPE] 6-MOS
[FISCAL-YEAR-END] JUL-31-1995
[PERIOD-START] AUG-01-1994
[PERIOD-END] JAN-31-1995
[INVESTMENTS-AT-COST] 14,060
[INVESTMENTS-AT-VALUE] 13,964
[RECEIVABLES] 47
[ASSETS-OTHER] 26
[OTHER-ITEMS-ASSETS] 10
[TOTAL-ASSETS] 14,047
[PAYABLE-FOR-SECURITIES] 29
[SENIOR-LONG-TERM-DEBT] 0
[OTHER-ITEMS-LIABILITIES] 155
[TOTAL-LIABILITIES] 184
[SENIOR-EQUITY] 0
[PAID-IN-CAPITAL-COMMON] 13,942
[SHARES-COMMON-STOCK] 1,400
[SHARES-COMMON-PRIOR] 1,977
[ACCUMULATED-NII-CURRENT] 0
[OVERDISTRIBUTION-NII] (10)
[ACCUMULATED-NET-GAINS] 27
[OVERDISTRIBUTION-GAINS] 0
[ACCUM-APPREC-OR-DEPREC] (96)
[NET-ASSETS] 13,863
[DIVIDEND-INCOME] 39
[INTEREST-INCOME] 139
[OTHER-INCOME] 0
[EXPENSES-NET] (204)
[NET-INVESTMENT-INCOME] (26)
[REALIZED-GAINS-CURRENT] 127
[APPREC-INCREASE-CURRENT] 203
[NET-CHANGE-FROM-OPS] 304
[EQUALIZATION] 0
[DISTRIBUTIONS-OF-INCOME] 0
[DISTRIBUTIONS-OF-GAINS] (771)
[DISTRIBUTIONS-OTHER] 0
[NUMBER-OF-SHARES-SOLD] 148
[NUMBER-OF-SHARES-REDEEMED] (413)
[SHARES-REINVESTED] 71
[NET-CHANGE-IN-ASSETS] (1,931)
[ACCUMULATED-NII-PRIOR] 0
[ACCUMULATED-GAINS-PRIOR] 34
[OVERDISTRIB-NII-PRIOR] 0
[OVERDIST-NET-GAINS-PRIOR] 0
[GROSS-ADVISORY-FEES] 75
[INTEREST-EXPENSE] 0
[GROSS-EXPENSE] 204
[AVERAGE-NET-ASSETS] 15,046
[PER-SHARE-NAV-BEGIN] 10.22
[PER-SHARE-NII] (0.02)
[PER-SHARE-GAIN-APPREC] 0.22
[PER-SHARE-DIVIDEND] 0
[PER-SHARE-DISTRIBUTIONS] (0.52)
[RETURNS-OF-CAPITAL] 0
[PER-SHARE-NAV-END] 9.90
[EXPENSE-RATIO] 2.73
[AVG-DEBT-OUTSTANDING] 0
[AVG-DEBT-PER-SHARE] 0
</TABLE>
