PAGE 1
000 A000000 04/30/2005
000 C000000 0001219120
000 D000000 N
000 E000000 NF
000 F000000 Y
000 G000000 N
000 H000000 N
000 I000000 6.1
000 J000000 A
001 A000000 ADVENT CLAYMORE CONVERTIBLE SECURITIES
001 B000000 811-21309
001 C000000 2124821600
002 A000000 1065 AVENUE OF THE AMERICAS, 31ST FLOOR
002 B000000 NEW YORK
002 C000000 NY
002 D010000 10018
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 ADVENT CAPITAL MANAGEMENT,LLC
008 B000001 A
008 C000001 801-000
008 D010001 NEW YORK
008 D020001 NY
008 D030001 10018
010 A000001 THE BANK OF NEW YORK
010 B000001 801-000000
010 C010001 NEW YORK
010 C020001 NY
010 C030001 10286
011 A000001 MERRILL LYNCH,PIERCE,FENNER & SMITH INC.
011 B000001 8-00000000
011 C010001 NEW YORK
011 C020001 NY
011 C030001 10080
012 A000001 THE BANK OF NEW YORK
012 B000001 84-0000000
012 C010001 NEW YORK
PAGE 2
012 C020001 NY
012 C030001 10286
013 A000001 PRICEWATERHOUSECOOPERS LLP
013 B010001 NEW YORK
013 B020001 NY
013 B030001 10036
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 N
019 B000000 0
020 A000001 MERRILL LYNCH & CO.,INC.
020 B000001 13-2740599
020 C000001 77
020 A000002 UBS WARBURG LLC
020 B000002 13-3873456
020 C000002 61
020 A000003 LEHMAN BROTHERS HOLDINGS, INC.
020 B000003 13-3216325
020 C000003 34
020 A000004 CITIGROUP GLOBAL MARKETS HOLDINGS, INC.
020 B000004 11-2418067
020 C000004 23
020 A000005 MCMAHAN SECURITIES CO., LP
020 B000005 06-1229141
020 C000005 10
020 A000006 MORGAN STANLEY
020 B000006 36-3145972
020 C000006 10
020 A000007 GOLDMAN SACHS & CO.
020 B000007 13-5108880
020 C000007 8
020 A000008 CREDIT SUISSE FIRST BOSTON, INC.
020 B000008 13-2853402
020 C000008 8
020 A000009 WACHOVIA SECURITIES, LLC
020 B000009 34-1542819
020 C000009 6
020 A000010 LAZARD FRERES & CO., LLC
020 B000010 13-5545100
020 C000010 3
021 000000 240
022 A000001 GOLDMAN SACHS & CO.
022 B000001 13-5108880
022 C000001 206323
022 D000001 199720
022 A000002 J.P. MORGAN CHASE & CO.
PAGE 3
022 B000002 13-2624428
022 C000002 12499
022 D000002 65598
022 A000003 CITIGROUP GLOBAL MARKETS HOLDINGS, INC.
022 B000003 11-2418067
022 C000003 21657
022 D000003 16800
022 A000004 LEHMAN BROTHERS HOLDINGS, INC.
022 B000004 13-3216325
022 C000004 33490
022 D000004 4865
022 A000005 MELLON FINANCIAL CORP.
022 B000005 25-1233834
022 C000005 0
022 D000005 30000
022 A000006 MERRILL LYNCH & CO., INC.
022 B000006 13-2740599
022 C000006 23268
022 D000006 2220
022 A000007 CREDIT SUISSE FIRST BOSTON, INC.
022 B000007 13-2853402
022 C000007 12315
022 D000007 12650
022 A000008 BANK OF AMERICA CORP.
022 B000008 56-0906609
022 C000008 6597
022 D000008 9567
022 A000009 BEAR STEARNS & CO., INC.
022 B000009 13-3299429
022 C000009 5585
022 D000009 9276
022 A000010 WACHOVIA SECURITIES, LLC
022 B000010 34-1542819
022 C000010 555
022 D000010 13368
023 C000000 364941
023 D000000 385526
024 000000 Y
025 A000001 GOLDMAN SACHS & CO.
025 B000001 13-5108880
025 C000001 D
025 D000001 30122
025 A000002 LEHMAN BROTHERS HOLDINGS, INC.
025 B000002 13-3216325
025 C000002 E
025 D000002 23186
025 A000003 MERRILL LYNCH & CO., INC.
025 B000003 13-2740599
025 C000003 D
025 D000003 17642
025 A000004 E*TRADE GROUP
PAGE 4
025 B000004 94-2844166
025 C000004 D
025 D000004 12836
025 A000005 GOLDMAN SACHS & CO.
025 B000005 13-5108880
025 C000005 E
025 D000005 10319
025 A000006 MERRILL LYNCH & CO., INC.
025 B000006 13-2740599
025 C000006 E
025 D000006 4313
025 D000007 0
025 D000008 0
026 A000000 N
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 N
028 A010000 0
028 A020000 0
028 A030000 0
028 A040000 0
028 B010000 0
028 B020000 0
028 B030000 0
028 B040000 0
028 C010000 0
028 C020000 0
028 C030000 0
028 C040000 0
028 D010000 0
028 D020000 0
028 D030000 0
028 D040000 0
028 E010000 0
028 E020000 0
028 E030000 0
028 E040000 0
028 F010000 0
028 F020000 0
028 F030000 0
028 F040000 0
028 G010000 0
028 G020000 0
028 G030000 0
028 G040000 0
PAGE 5
028 H000000 0
030 A000000 0
030 B000000 0.00
030 C000000 0.00
031 A000000 0
031 B000000 0
032 000000 0
033 000000 0
035 000000 0
036 B000000 0
038 000000 0
042 A000000 0
042 B000000 0
042 C000000 0
042 D000000 0
042 E000000 0
042 F000000 0
042 G000000 0
042 H000000 0
043 000000 0
044 000000 0
045 000000 Y
046 000000 N
047 000000 Y
048 000000 0.540
048 A010000 0
048 A020000 0.000
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 0
048 K020000 0.000
049 000000 N
050 000000 N
051 000000 N
052 000000 N
PAGE 6
053 A000000 Y
053 B000000 Y
053 C000000 N
054 A000000 Y
054 B000000 Y
054 C000000 N
054 D000000 N
054 E000000 N
054 F000000 N
054 G000000 N
054 H000000 Y
054 I000000 N
054 J000000 Y
054 K000000 N
054 L000000 N
054 M000000 Y
054 N000000 N
054 O000000 N
055 A000000 N
055 B000000 N
056 000000 N
057 000000 N
058 A000000 N
059 000000 Y
060 A000000 Y
060 B000000 Y
061 000000 2500
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
066 C000000 N
066 D000000 N
PAGE 7
066 E000000 Y
066 F000000 N
066 G000000 N
067 000000 N
068 A000000 N
068 B000000 N
069 000000 N
070 A010000 Y
070 A020000 N
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 N
070 G010000 Y
070 G020000 N
070 H010000 Y
070 H020000 N
070 I010000 N
070 I020000 N
070 J010000 Y
070 J020000 Y
070 K010000 Y
070 K020000 Y
070 L010000 Y
070 L020000 Y
070 M010000 N
070 M020000 N
070 N010000 Y
070 N020000 Y
070 O010000 Y
070 O020000 N
070 P010000 N
070 P020000 N
070 Q010000 N
070 Q020000 N
070 R010000 N
070 R020000 N
071 A000000 250627
071 B000000 250139
071 C000000 851775
071 D000000 29
072 A000000 6
072 B000000 17986
072 C000000 12317
072 D000000 0
PAGE 8
072 E000000 0
072 F000000 2391
072 G000000 68
072 H000000 0
072 I000000 983
072 J000000 54
072 K000000 0
072 L000000 92
072 M000000 37
072 N000000 16
072 O000000 0
072 P000000 0
072 Q000000 80
072 R000000 33
072 S000000 36
072 T000000 0
072 U000000 0
072 V000000 0
072 W000000 421
072 X000000 4211
072 Y000000 886
072 Z000000 26978
072AA000000 20645
072BB000000 0
072CC010000 0
072CC020000 42130
072DD010000 34113
072DD020000 0
072EE000000 0
073 A010000 1.4608
073 A020000 0.0000
073 B000000 0.0000
073 C000000 0.0000
074 A000000 2651
074 B000000 0
074 C000000 0
074 D000000 475339
074 E000000 339075
074 F000000 0
074 G000000 0
074 H000000 0
074 I000000 30122
074 J000000 10784
074 K000000 0
074 L000000 12218
074 M000000 104
074 N000000 870293
074 O000000 17167
074 P000000 391
074 Q000000 0
074 R010000 0
PAGE 9
074 R020000 0
074 R030000 0
074 R040000 389
074 S000000 275000
074 T000000 577346
074 U010000 23353
074 U020000 0
074 V010000 24.72
074 V020000 0.00
074 W000000 0.0000
074 X000000 29899
074 Y000000 0
075 A000000 0
075 B000000 893039
076 000000 23.08
077 A000000 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
086 E020000 0
086 F010000 0
086 F020000 0
087 A010000 COMMON STOCK
087 A020000 00764C109
087 A030000 AVK
088 A000000 N
088 B000000 N
088 C000000 N
088 D000000 Y
SIGNATURE JOHN F. WILSON
TITLE VICE PRESIDENT