<PAGE> PAGE 1
000 A000000 06/30/1999
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007 C010300 3
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007 C010400 4
007 C020400 ASSET ALLOCATION SERIES
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007 C010500 5
007 C020500 DIVERSIFIED INCOME SERIES
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007 C020600 GLOBAL GROWTH SERIES
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<PAGE> PAGE 2
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007 C021100 GLOBAL BOND SERIES
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007 C011200 12
007 C021200 INTERNATIONAL STOCK SERIES
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007 C011300 13
007 C021300 VALUE SERIES
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007 C011400 14
007 C021400 S & P 500 INDEX SERIES
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007 C021600 MID CAP STOCK SERIES
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<PAGE> PAGE 3
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<PAGE> PAGE 4
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<PAGE> PAGE 5
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<PAGE> PAGE 6
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<PAGE> PAGE 7
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<PAGE> PAGE 8
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<PAGE> PAGE 9
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<PAGE> PAGE 10
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<PAGE> PAGE 11
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<PAGE> PAGE 12
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<PAGE> PAGE 13
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<PAGE> PAGE 14
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<PAGE> PAGE 15
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<PAGE> PAGE 16
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<PAGE> PAGE 17
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<PAGE> PAGE 18
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<PAGE> PAGE 19
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<PAGE> PAGE 20
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<PAGE> PAGE 21
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<PAGE> PAGE 22
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<PAGE> PAGE 23
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<PAGE> PAGE 25
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<PAGE> PAGE 26
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<PAGE> PAGE 27
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<PAGE> PAGE 28
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<PAGE> PAGE 29
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<PAGE> PAGE 30
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<PAGE> PAGE 31
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<PAGE> PAGE 32
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<PAGE> PAGE 33
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<PAGE> PAGE 36
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<PAGE> PAGE 37
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<PAGE> PAGE 38
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<PAGE> PAGE 39
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<PAGE> PAGE 40
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<PAGE> PAGE 41
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<PAGE> PAGE 42
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<PAGE> PAGE 43
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<PAGE> PAGE 44
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<PAGE> PAGE 45
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<PAGE> PAGE 46
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<PAGE> PAGE 47
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<PAGE> PAGE 48
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<PAGE> PAGE 49
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<PAGE> PAGE 50
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<PAGE> PAGE 51
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<PAGE> PAGE 52
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<PAGE> PAGE 53
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<PAGE> PAGE 54
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<PAGE> PAGE 55
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<PAGE> PAGE 56
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<PAGE> PAGE 57
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<PAGE> PAGE 58
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<PAGE> PAGE 59
050 001100 N
051 001100 N
052 001100 N
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<PAGE> PAGE 60
070 F021100 N
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070 K021100 Y
070 L011100 Y
070 L021100 Y
070 M011100 Y
070 M021100 Y
070 N011100 Y
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070 O021100 N
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070 R011100 N
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<PAGE> PAGE 61
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<PAGE> PAGE 62
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<PAGE> PAGE 63
046 001200 N
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<PAGE> PAGE 64
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066 F001200 N
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<PAGE> PAGE 65
070 Q011200 N
070 Q021200 N
070 R011200 N
070 R021200 N
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<PAGE> PAGE 66
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008 B001301 A
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<PAGE> PAGE 67
025 D001307 0
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<PAGE> PAGE 68
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<PAGE> PAGE 69
070 A011300 Y
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070 F011300 Y
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070 G011300 Y
070 G021300 N
070 H011300 Y
070 H021300 N
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070 I021300 N
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070 K011300 Y
070 K021300 Y
070 L011300 Y
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<PAGE> PAGE 70
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<PAGE> PAGE 71
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<PAGE> PAGE 72
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<PAGE> PAGE 73
048 J021400 0.000
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<PAGE> PAGE 74
070 B021400 N
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070 G011400 Y
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<PAGE> PAGE 75
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<PAGE> PAGE 76
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008 A001501 FORTIS ADVISERS, INC.
008 B001501 A
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<PAGE> PAGE 77
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051 001500 N
052 001500 N
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055 B001500 N
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057 001500 N
<PAGE> PAGE 78
058 A001500 N
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062 H001500 0.0
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062 K001500 0.0
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062 M001500 0.0
062 N001500 0.0
062 O001500 0.0
062 P001500 0.0
062 Q001500 0.0
062 R001500 0.0
063 A001500 0
063 B001500 0.0
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066 B001500 N
066 C001500 N
066 D001500 Y
066 E001500 N
066 F001500 N
066 G001500 N
067 001500 N
068 A001500 N
068 B001500 N
069 001500 N
070 A011500 Y
070 A021500 Y
070 B011500 Y
070 B021500 N
070 C011500 Y
070 C021500 N
070 D011500 Y
070 D021500 N
070 E011500 Y
070 E021500 N
070 F011500 Y
070 F021500 N
070 G011500 Y
070 G021500 N
070 H011500 Y
<PAGE> PAGE 79
070 H021500 N
070 I011500 N
070 I021500 N
070 J011500 Y
070 J021500 Y
070 K011500 Y
070 K021500 Y
070 L011500 Y
070 L021500 Y
070 M011500 Y
070 M021500 N
070 N011500 Y
070 N021500 Y
070 O011500 Y
070 O021500 N
070 P011500 Y
070 P021500 N
070 Q011500 N
070 Q021500 N
070 R011500 N
070 R021500 N
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<PAGE> PAGE 80
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072BB001500 5687
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008 A001601 FORTIS ADVISERS, INC.
008 B001601 A
008 C001601 801-07877
008 D011601 WOODBURY
008 D021601 MN
008 D031601 55125
008 A001602 THE DREYFUS CORPORATION
<PAGE> PAGE 81
008 B001602 S
008 C001602 801-8147
008 D011602 PITTSBURGH
008 D021602 PA
008 D031602 15258
024 001600 Y
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<PAGE> PAGE 82
048 A021600 0.900
048 B011600 150000
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048 H021600 0.000
048 I011600 0
048 I021600 0.000
048 J011600 0
048 J021600 0.000
048 K011600 250000
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049 001600 N
050 001600 N
051 001600 N
052 001600 N
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055 A001600 N
055 B001600 N
056 001600 Y
057 001600 N
058 A001600 N
059 001600 Y
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<PAGE> PAGE 83
062 Q001600 0.0
062 R001600 0.0
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066 A001600 Y
066 B001600 N
066 C001600 N
066 D001600 N
066 E001600 N
066 F001600 N
066 G001600 Y
067 001600 N
068 A001600 N
068 B001600 N
069 001600 Y
070 A011600 Y
070 A021600 N
070 B011600 Y
070 B021600 N
070 C011600 Y
070 C021600 N
070 D011600 Y
070 D021600 N
070 E011600 Y
070 E021600 N
070 F011600 Y
070 F021600 Y
070 G011600 Y
070 G021600 N
070 H011600 Y
070 H021600 N
070 I011600 N
070 I021600 N
070 J011600 Y
070 J021600 N
070 K011600 Y
070 K021600 N
070 L011600 Y
070 L021600 Y
070 M011600 Y
070 M021600 N
070 N011600 Y
070 N021600 N
070 O011600 Y
070 O021600 N
070 P011600 Y
070 P021600 N
070 Q011600 N
070 Q021600 N
070 R011600 N
070 R021600 N
<PAGE> PAGE 84
071 A001600 9523
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072 U001600 0
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072 Y001600 0
072 Z001600 4
072AA001600 924
072BB001600 754
072CC011600 740
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072DD011600 0
072DD021600 0
072EE001600 0
073 A011600 0.0000
073 A021600 0.0000
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<PAGE> PAGE 85
074 K001600 0
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074 M001600 4
074 N001600 18879
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074 R041600 12
074 S001600 0
074 T001600 18854
074 U011600 1879
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075 A001600 0
075 B001600 15253
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008 A001701 FORTIS ADVISERS, INC.
008 B001701 A
008 C001701 801-07877
008 D011701 WOODBURY
008 D021701 MN
008 D031701 55125
008 A001702 ALLIANCE CAPITAL MANAGEMENT L.P.
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008 D011702 MINNEAPOLIS
008 D021702 MN
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024 001700 Y
025 A001701 MORGAN STANLEY/DEAN WITTER REYNOLDS, INC.
025 B001701 13-2655998
025 C001701 E
025 D001701 1732
025 A001702 U.S. BANK (N.A.) MINNEAPOLIS
025 B001702 41-0256395
025 C001702 D
025 D001702 2828
025 A001703 GENERAL ELECTRIC CREDIT CORP.
025 B001703 13-1500700
025 C001703 E
025 D001703 147
025 A001704 GOLDMAN SACHS GROUP, INC.
025 B001704 13-5108880
025 C001704 E
<PAGE> PAGE 86
025 D001704 311
025 A001705 MERRILL LYNCH, PIERCE, FENNER & SMITH, INC.
025 B001705 13-5674085
025 C001705 E
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025 D001707 0
025 D001708 0
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<PAGE> PAGE 87
048 F011700 0
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048 G021700 0.000
048 H011700 0
048 H021700 0.000
048 I011700 0
048 I021700 0.000
048 J011700 0
048 J021700 0.000
048 K011700 200000
048 K021700 0.800
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050 001700 N
051 001700 N
052 001700 N
053 A001700 N
055 A001700 N
055 B001700 N
056 001700 Y
057 001700 N
058 A001700 N
059 001700 Y
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<PAGE> PAGE 88
066 F001700 N
066 G001700 N
067 001700 N
068 A001700 N
068 B001700 N
069 001700 N
070 A011700 Y
070 A021700 N
070 B011700 Y
070 B021700 N
070 C011700 Y
070 C021700 N
070 D011700 Y
070 D021700 N
070 E011700 N
070 E021700 N
070 F011700 Y
070 F021700 N
070 G011700 Y
070 G021700 N
070 H011700 N
070 H021700 N
070 I011700 N
070 I021700 N
070 J011700 Y
070 J021700 N
070 K011700 Y
070 K021700 Y
070 L011700 Y
070 L021700 Y
070 M011700 Y
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070 N011700 Y
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070 O011700 Y
070 O021700 N
070 P011700 Y
070 P021700 N
070 Q011700 N
070 Q021700 N
070 R011700 N
070 R021700 N
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071 B001700 9164
071 C001700 31600
071 D001700 29
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072 B001700 64
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<PAGE> PAGE 89
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<PAGE> PAGE 90
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008 A001801 FORTIS ADVISERS, INC.
008 B001801 A
008 C001801 801-07877
008 D011801 WOODBURY
008 D021801 MN
008 D031801 55125
008 A001802 BERGER ASSOCIATES, INC.
008 B001802 S
008 C001802 801-9451
008 D011802 DENVER
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008 D031802 80206
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024 001800 Y
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025 B001801 41-0256395
025 C001801 D
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025 A001802 MORGAN STANLEY/DEAN WITTER REYNOLDS, INC.
025 B001802 13-2655998
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<PAGE> PAGE 91
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<PAGE> PAGE 92
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<PAGE> PAGE 93
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<PAGE> PAGE 94
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SIGNATURE TAMARA L. FAGELY
TITLE TREASURER
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
STATEMENT OF ASSETS AND LIABILITIES, STATEMENT OF OPERATIONS, AND STATEMENT OF
CHANGES IN NET ASSETS FOUND ON PAGES 84 THROUGH 101 OF THE FORTIS SERIES FUND,
INC. SEMI-ANNUAL SHAREHOLDER REPORT.
</LEGEND>
<CIK> 0000790558
<NAME> FORTIS SERIES FUND, INC.
<SERIES>
<NUMBER> 10
<NAME> GLOBAL ASSET ALLOCATION SERIES
<MULTIPLIER> 1
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> DEC-31-1999
<PERIOD-START> JAN-01-1999
<PERIOD-END> JUN-30-1999
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<TOTAL-ASSETS> 69,462,208
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<SENIOR-LONG-TERM-DEBT> 0
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<TOTAL-LIABILITIES> 111,759
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<ACCUMULATED-NET-GAINS> 3,044,961
<OVERDISTRIBUTION-GAINS> 0
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<NET-ASSETS> 69,350,449
<DIVIDEND-INCOME> 556,289
<INTEREST-INCOME> 679,488
<OTHER-INCOME> 0
<EXPENSES-NET> (338,866)
<NET-INVESTMENT-INCOME> 896,911
<REALIZED-GAINS-CURRENT> 1,491,382
<APPREC-INCREASE-CURRENT> (3,132,362)
<NET-CHANGE-FROM-OPS> (744,069)
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<DISTRIBUTIONS-OF-INCOME> 0
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 348,295
<NUMBER-OF-SHARES-REDEEMED> (275,338)
<SHARES-REINVESTED> 0
<NET-CHANGE-IN-ASSETS> 264,194
<ACCUMULATED-NII-PRIOR> (3,440)
<ACCUMULATED-GAINS-PRIOR> 1,369,891
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 306,237
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 338,866
<AVERAGE-NET-ASSETS> 68,553,768
<PER-SHARE-NAV-BEGIN> 14.32
<PER-SHARE-NII> 0.15
<PER-SHARE-GAIN-APPREC> (0.31)
<PER-SHARE-DIVIDEND> 0
<PER-SHARE-DISTRIBUTIONS> 0
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 14.16
<EXPENSE-RATIO> 1.00<F1>
[AVG-DEBT-OUTSTANDING] 0
[AVG-DEBT-PER-SHARE] 0
<FN>
<F1>ANNUALIZED.
</FN>
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
STATEMENT OF ASSETS AND LIABILITIES, STATEMENT OF OPERATIONS, AND STATEMENT OF
CHANGES IN NET ASSETS FOUND ON PAGES 84 THROUGH 107 OF THE FORTIS SERIES FUND,
INC. SEMI-ANNUAL SHAREHOLDER REPORT.
</LEGEND>
<CIK> 0000790558
<NAME> FORTIS SERIES FUND, INC.
<SERIES>
<NUMBER> 09
<NAME> AGGRESSIVE GROWTH SERIES
<MULTIPLIER> 1
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> DEC-31-1999
<PERIOD-START> JAN-01-1999
<PERIOD-END> JUN-30-1999
<INVESTMENTS-AT-COST> 146,453,496
<INVESTMENTS-AT-VALUE> 182,410,342
<RECEIVABLES> 7,151,653
<ASSETS-OTHER> 30,125,488<F1>
<OTHER-ITEMS-ASSETS> 989
<TOTAL-ASSETS> 219,688,472
<PAYABLE-FOR-SECURITIES> 12,067,418
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 30,236,755<F1>
<TOTAL-LIABILITIES> 42,304,173
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 109,319,725
<SHARES-COMMON-STOCK> 8,865,608
<SHARES-COMMON-PRIOR> 8,973,277
<ACCUMULATED-NII-CURRENT> (220,466)
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 32,328,194
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 35,956,846
<NET-ASSETS> 177,384,299
<DIVIDEND-INCOME> 56,773
<INTEREST-INCOME> 114,659
<OTHER-INCOME> 79,696<F2>
<EXPENSES-NET> (546,563)
<NET-INVESTMENT-INCOME> (295,435)
<REALIZED-GAINS-CURRENT> 25,890,586
<APPREC-INCREASE-CURRENT> 3,629,797
<NET-CHANGE-FROM-OPS> 29,224,948
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 0
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 451,344
<NUMBER-OF-SHARES-REDEEMED> (559,013)
<SHARES-REINVESTED> 0
<NET-CHANGE-IN-ASSETS> 27,524,621
<ACCUMULATED-NII-PRIOR> 74,969
<ACCUMULATED-GAINS-PRIOR> 6,437,608
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 500,292
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 546,563
<AVERAGE-NET-ASSETS> 154,726,044
<PER-SHARE-NAV-BEGIN> 16.70
<PER-SHARE-NII> (0.03)
<PER-SHARE-GAIN-APPREC> 3.34
<PER-SHARE-DIVIDEND> 0
<PER-SHARE-DISTRIBUTIONS> 0
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 20.01
<EXPENSE-RATIO> 0.73<F3>
[AVG-DEBT-OUTSTANDING] 0
[AVG-DEBT-PER-SHARE] 0
<FN>
<F1>SECURITIES VALUED AT $30,861,957 WERE ON LOAN TO BROKERS FROM THE PORTFOLIO.
FOR COLLATERAL, THE PORTFOLIO'S CUSTODIAN RECEIVED $30,125,488 IN CASH.
<F2>SECURITY LENDING INCOME THROUGH JUNE 30, 1999.
<F3>ANNUALIZED.
</FN>
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
STATEMENT OF ASSETS AND LIABILITIES, STATEMENT OF OPERATIONS, AND STATEMENT OF
CHANGES IN NET ASSETS FOUND ON PAGES 84 THROUGH 104 OF THE FORTIS SERIES FUND,
INC. SEMI-ANNUAL SHAREHOLDER REPORT.
</LEGEND>
<CIK> 0000790558
<NAME> FORTIS SERIES FUND, INC.
<SERIES>
<NUMBER> 15
<NAME> BLUE CHIP STOCK SERIES
<MULTIPLIER> 1
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> DEC-31-1999
<PERIOD-START> JAN-01-1999
<PERIOD-END> JUN-30-1999
<INVESTMENTS-AT-COST> 186,547,695
<INVESTMENTS-AT-VALUE> 245,242,926
<RECEIVABLES> 899,781
<ASSETS-OTHER> 56,645,699<F1>
<OTHER-ITEMS-ASSETS> 2,903
<TOTAL-ASSETS> 302,791,309
<PAYABLE-FOR-SECURITIES> 1,606,145
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 56,833,582<F1>
<TOTAL-LIABILITIES> 58,439,727
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 182,361,420
<SHARES-COMMON-STOCK> 11,980,056
<SHARES-COMMON-PRIOR> 9,846,939
<ACCUMULATED-NII-CURRENT> 217,840
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 3,077,093
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 58,695,229
<NET-ASSETS> 244,351,582
<DIVIDEND-INCOME> 890,633
<INTEREST-INCOME> 267,952
<OTHER-INCOME> 13,629<F2>
<EXPENSES-NET> (963,816)
<NET-INVESTMENT-INCOME> 208,398
<REALIZED-GAINS-CURRENT> 3,378,341
<APPREC-INCREASE-CURRENT> 16,893,220
<NET-CHANGE-FROM-OPS> 20,479,959
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 0
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 2,236,326
<NUMBER-OF-SHARES-REDEEMED> (103,209)
<SHARES-REINVESTED> 0
<NET-CHANGE-IN-ASSETS> 61,430,191
<ACCUMULATED-NII-PRIOR> 9,441
<ACCUMULATED-GAINS-PRIOR> (301,247)
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 918,209
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 963,816
<AVERAGE-NET-ASSETS> 212,247,109
<PER-SHARE-NAV-BEGIN> 18.58
<PER-SHARE-NII> 0.02
<PER-SHARE-GAIN-APPREC> 1.80
<PER-SHARE-DIVIDEND> 0
<PER-SHARE-DISTRIBUTIONS> 0
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 20.40
<EXPENSE-RATIO> 0.92<F3>
[AVG-DEBT-OUTSTANDING] 0
[AVG-DEBT-PER-SHARE] 0
<FN>
<F1>SECURITIES VALUED AT $54,903,055 WERE ON LOAN TO BROKERS FROM THE PORTFOLIO.
FOR COLLATERAL, THE PORTFOLIO'S CUSTODIAN RECEIVED $56,645,699 IN CASH.
<F2>SECURITY LENDING INCOME THROUGH JUNE 30, 1999.
<F3>ANNUALIZED.
</FN>
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
STATEMENT OF ASSETS AND LIABILITIES, STATEMENT OF OPERATIONS, AND STATEMENT OF
CHANGES IN NET ASSETS FOUND ON PAGES 84 THROUGH 100 OF THE FORTIS SERIES FUND,
INC. SEMI-ANNUAL SHAREHOLDER REPORT.
</LEGEND>
<CIK> 0000790558
<NAME> FORTIS SERIES FUND, INC.
<SERIES>
<NUMBER> 11
<NAME> GLOBAL BOND SERIES
<MULTIPLIER> 1
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> DEC-31-1999
<PERIOD-START> JAN-01-1999
<PERIOD-END> JUN-30-1999
<INVESTMENTS-AT-COST> 25,434,622
<INVESTMENTS-AT-VALUE> 24,385,278
<RECEIVABLES> 644,008
<ASSETS-OTHER> 0
<OTHER-ITEMS-ASSETS> 169,497
<TOTAL-ASSETS> 25,198,783
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 25,941
<TOTAL-LIABILITIES> 25,941
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 26,020,106
<SHARES-COMMON-STOCK> 2,384,855
<SHARES-COMMON-PRIOR> 2,133,030
<ACCUMULATED-NII-CURRENT> 206,587
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> (5,897)
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> (1,047,954)
<NET-ASSETS> 25,172,842
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 588,700
<OTHER-INCOME> 0
<EXPENSES-NET> (112,054)
<NET-INVESTMENT-INCOME> 476,646
<REALIZED-GAINS-CURRENT> (319,260)
<APPREC-INCREASE-CURRENT> (2,453,385)
<NET-CHANGE-FROM-OPS> (2,295,999)
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 0
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 402,791
<NUMBER-OF-SHARES-REDEEMED> (150,966)
<SHARES-REINVESTED> 0
<NET-CHANGE-IN-ASSETS> 513,645
<ACCUMULATED-NII-PRIOR> (146,800)
<ACCUMULATED-GAINS-PRIOR> 190,104
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 93,971
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 112,054
<AVERAGE-NET-ASSETS> 25,182,809
<PER-SHARE-NAV-BEGIN> 11.56
<PER-SHARE-NII> 0.16
<PER-SHARE-GAIN-APPREC> (1.16)
<PER-SHARE-DIVIDEND> 0
<PER-SHARE-DISTRIBUTIONS> 0
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 10.56
<EXPENSE-RATIO> 0.89<F1>
[AVG-DEBT-OUTSTANDING] 0
[AVG-DEBT-PER-SHARE] 0
<FN>
<F1>ANNUALIZED.
</FN>
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
STATEMENT OF ASSETS AND LIABILITIES, STATEMENT OF OPERATIONS, AND STATEMENT OF
CHANGES IN NET ASSETS FOUND ON PAGES 84 THROUGH 103 OF THE FORTIS SERIES FUND,
INC. SEMI-ANNUAL SHAREHOLDER REPORT.
</LEGEND>
<CIK> 0000790558
<NAME> FORTIS SERIES FUND, INC.
<SERIES>
<NUMBER> 08
<NAME> GROWTH & INCOME SERIES
<MULTIPLIER> 1
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> DEC-31-1999
<PERIOD-START> JAN-01-1999
<PERIOD-END> JUN-30-1999
<INVESTMENTS-AT-COST> 249,647,117
<INVESTMENTS-AT-VALUE> 325,052,083
<RECEIVABLES> 713,730
<ASSETS-OTHER> 71,380,537<F1>
<OTHER-ITEMS-ASSETS> 3,597
<TOTAL-ASSETS> 397,149,947
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 71,582,267<F1>
<TOTAL-LIABILITIES> 71,582,267
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 204,850,506
<SHARES-COMMON-STOCK> 14,226,578
<SHARES-COMMON-PRIOR> 14,742,412
<ACCUMULATED-NII-CURRENT> 9,508,498
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 35,803,710
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 75,404,966
<NET-ASSETS> 325,567,680
<DIVIDEND-INCOME> 3,152,110
<INTEREST-INCOME> 347,542
<OTHER-INCOME> 57,523<F2>
<EXPENSES-NET> (1,061,881)
<NET-INVESTMENT-INCOME> 2,495,294
<REALIZED-GAINS-CURRENT> 22,746,946
<APPREC-INCREASE-CURRENT> (1,334,622)
<NET-CHANGE-FROM-OPS> 23,907,618
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 0
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 328,997
<NUMBER-OF-SHARES-REDEEMED> (844,831)
<SHARES-REINVESTED> 0
<NET-CHANGE-IN-ASSETS> 12,628,190
<ACCUMULATED-NII-PRIOR> 7,013,204
<ACCUMULATED-GAINS-PRIOR> 13,056,764
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 993,180
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 1,061,881
<AVERAGE-NET-ASSETS> 316,685,525
<PER-SHARE-NAV-BEGIN> 21.23
<PER-SHARE-NII> 0.19
<PER-SHARE-GAIN-APPREC> 1.46
<PER-SHARE-DIVIDEND> 0
<PER-SHARE-DISTRIBUTIONS> 0
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 22.88
<EXPENSE-RATIO> 0.68<F3>
[AVG-DEBT-OUTSTANDING] 0
[AVG-DEBT-PER-SHARE] 0
<FN>
<F1>SECURITIES VALUED AT $69,717,885 WERE ON LOAN TO BROKERS FROM THE PORTFOLIO.
FOR COLLATERAL, THE PORTFOLIO'S CUSTODIAN RECEIVED $71,380,537 IN CASH.
<F2>SECURITY LENDING INCOME THROUGH JUNE 30, 1999.
<F3>ANNUALIZED.
</FN>
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
STATEMENT OF ASSETS AND LIABILITIES, STATEMENT OF OPERATIONS, AND STATEMENT OF
CHANGES IN NET ASSETS FOUND ON PAGES 84 THROUGH 106 OF THE FORTIS SERIES FUND,
INC. SEMI-ANNUAL SHAREHOLDER REPORT.
</LEGEND>
<CIK> 0000790558
<NAME> FORTIS SERIES FUND, INC.
<SERIES>
<NUMBER> 06
<NAME> GLOBAL GROWTH SERIES
<MULTIPLIER> 1
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> DEC-31-1999
<PERIOD-START> JAN-01-1999
<PERIOD-END> JUN-01-1999
<INVESTMENTS-AT-COST> 214,070,663
<INVESTMENTS-AT-VALUE> 349,474,490
<RECEIVABLES> 954,512
<ASSETS-OTHER> 101,874,340<F1>
<OTHER-ITEMS-ASSETS> 2,296
<TOTAL-ASSETS> 452,305,638
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 102,348,442<F1>
<TOTAL-LIABILITIES> 102,348,442
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 168,242,874
<SHARES-COMMON-STOCK> 14,052,395
<SHARES-COMMON-PRIOR> 15,574,153
<ACCUMULATED-NII-CURRENT> 950,975
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 45,372,897
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 135,390,450
<NET-ASSETS> 349,957,196
<DIVIDEND-INCOME> 1,532,325
<INTEREST-INCOME> 261,269
<OTHER-INCOME> 25,628<F2>
<EXPENSES-NET> (1,277,077)
<NET-INVESTMENT-INCOME> 542,145
<REALIZED-GAINS-CURRENT> 37,203,331
<APPREC-INCREASE-CURRENT> (4,692,618)
<NET-CHANGE-FROM-OPS> 33,052,858
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 0
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 214,540
<NUMBER-OF-SHARES-REDEEMED> (1,736,298)
<SHARES-REINVESTED> 0
<NET-CHANGE-IN-ASSETS> (1,518,958)
<ACCUMULATED-NII-PRIOR> 416,661
<ACCUMULATED-GAINS-PRIOR> 8,161,735
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 1,170,745
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 1,277,077
<AVERAGE-NET-ASSETS> 338,596,339
<PER-SHARE-NAV-BEGIN> 22.57
<PER-SHARE-NII> 0.04
<PER-SHARE-GAIN-APPREC> 2.29
<PER-SHARE-DIVIDEND> 0
<PER-SHARE-DISTRIBUTIONS> 0
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 24.90
<EXPENSE-RATIO> 0.76<F3>
[AVG-DEBT-OUTSTANDING] 0
[AVG-DEBT-PER-SHARE] 0
<FN>
<F1>SECURITIES VALUED AT $100,007,304 WERE ON LOAN TO BROKERS FROM THE PORTFOLIO.
FOR COLLATERAL, THE PORTFOLIO'S CUSTODIAN RECEIVED $101,874,340 IN CASH.
<F2>SECURITY LENDING INCOME THROUGH JUNE 30, 1999.
<F3>ANNUALIZED.
</FN>
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
STATEMENT OF ASSETS AND LIABILITIES, STATEMENT OF OPERATIONS, AND STATEMENT OF
CHANGES IN NET ASSETS FOUND ON PAGES 84 THROUGH 107 OF THE FORTIS SERIES FUND,
INC. SEMI-ANNUAL SHAREHOLDER REPORT.
</LEGEND>
<CIK> 0000790558
<NAME> FORTIS SERIES FUND, INC.
<SERIES>
<NUMBER> 01
<NAME> GROWTH STOCK SERIES
<MULTIPLIER> 1
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> DEC-31-1999
<PERIOD-START> JAN-01-1999
<PERIOD-END> JUN-30-1999
<INVESTMENTS-AT-COST> 614,247,459
<INVESTMENTS-AT-VALUE> 750,840,527
<RECEIVABLES> 11,352,619
<ASSETS-OTHER> 0
<OTHER-ITEMS-ASSETS> 7,733
<TOTAL-ASSETS> 762,200,879
<PAYABLE-FOR-SECURITIES> 11,655,337
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 812,559
<TOTAL-LIABILITIES> 12,467,896
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 307,681,414
<SHARES-COMMON-STOCK> 17,343,616
<SHARES-COMMON-PRIOR> 18,554,191
<ACCUMULATED-NII-CURRENT> 1,022,960
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 304,435,541
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 136,593,068
<NET-ASSETS> 749,732,983
<DIVIDEND-INCOME> 841,278
<INTEREST-INCOME> 1,044,409
<OTHER-INCOME> 0
<EXPENSES-NET> (2,383,643)
<NET-INVESTMENT-INCOME> (497,956)
<REALIZED-GAINS-CURRENT> 81,024,211
<APPREC-INCREASE-CURRENT> (43,721,626)
<NET-CHANGE-FROM-OPS> 36,804,629
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 0
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 200,897
<NUMBER-OF-SHARES-REDEEMED> (1,411,472)
<SHARES-REINVESTED> 0
<NET-CHANGE-IN-ASSETS> (12,620,784)
<ACCUMULATED-NII-PRIOR> 1,520,916
<ACCUMULATED-GAINS-PRIOR> 223,411,330
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 2,229,623
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 2,383,643
<AVERAGE-NET-ASSETS> 738,473,867
<PER-SHARE-NAV-BEGIN> 41.09
<PER-SHARE-NII> (0.02)
<PER-SHARE-GAIN-APPREC> 2.16
<PER-SHARE-DIVIDEND> 0
<PER-SHARE-DISTRIBUTIONS> 0
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 43.23
<EXPENSE-RATIO> 0.66<F1>
[AVG-DEBT-OUTSTANDING] 0
[AVG-DEBT-PER-SHARE] 0
<FN>
<F1>ANNUALIZED.
</FN>
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
STATEMENT OF ASSETS AND LIABILITIES, STATEMENT OF OPERATIONS, AND STATEMENT OF
CHANGES IN NET ASSETS FOUND ON PAGES 84 THROUGH 101 OF THE FORTIS SERIES FUND,
INC. SEMI-ANNUAL SHAREHOLDER REPORT.
</LEGEND>
<CIK> 0000790558
<NAME> FORTIS SERIES FUND, INC.
<SERIES>
<NUMBER> 07
<NAME> HIGH YIELD SERIES
<MULTIPLIER> 1
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> DEC-31-1999
<PERIOD-START> JAN-01-1999
<PERIOD-END> JUN-30-1999
<INVESTMENTS-AT-COST> 74,432,201
<INVESTMENTS-AT-VALUE> 69,660,498
<RECEIVABLES> 1,808,497
<ASSETS-OTHER> 0
<OTHER-ITEMS-ASSETS> 734
<TOTAL-ASSETS> 71,469,729
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 116,814
<TOTAL-LIABILITIES> 116,814
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 73,522,292
<SHARES-COMMON-STOCK> 7,226,025
<SHARES-COMMON-PRIOR> 7,165,758
<ACCUMULATED-NII-CURRENT> 9,554,327
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> (6,952,001)
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> (4,771,703)
<NET-ASSETS> 71,352,915
<DIVIDEND-INCOME> 13,045
<INTEREST-INCOME> 3,382,762
<OTHER-INCOME> 0
<EXPENSES-NET> (204,082)
<NET-INVESTMENT-INCOME> 3,191,725
<REALIZED-GAINS-CURRENT> (5,367,641)
<APPREC-INCREASE-CURRENT> 1,943,272
<NET-CHANGE-FROM-OPS> (232,644)
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 0
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 613,934
<NUMBER-OF-SHARES-REDEEMED> (553,667)
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[AVG-DEBT-OUTSTANDING] 0
[AVG-DEBT-PER-SHARE] 0
<FN>
<F1>ANNUALIZED.
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</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
STATEMENT OF ASSETS AND LIABILITIES, STATEMENT OF OPERATIONS, AND STATEMENT OF
CHANGES IN NET ASSETS FOUND ON PAGES 84 THROUGH 100 OF THE FORTIS SERIES FUND,
INC. SEMI-ANNUAL SHAREHOLDER REPORT.
</LEGEND>
<CIK> 0000790558
<NAME> FORTIS SERIES FUND, INC.
<SERIES>
<NUMBER> 05
<NAME> DIVERSIFIED INCOME SERIES
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<S> <C>
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[AVG-DEBT-OUTSTANDING] 0
[AVG-DEBT-PER-SHARE] 0
<FN>
<F1>ANNUALIZED.
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</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
STATEMENT OF ASSETS AND LIABILITIES, STATEMENT OF OPERATIONS, AND STATEMENT OF
CHANGES IN NET ASSETS FOUND ON PAGES 84 THROUGH 104 OF THE FORTIS SERIES FUND,
INC. SEMI-ANNUAL SHAREHOLDER REPORT.
</LEGEND>
<CIK> 0000790558
<NAME> FORTIS SERIES FUND, INC.
<SERIES>
<NUMBER> 12
<NAME> INTERNATIONAL STOCK SERIES
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<S> <C>
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[AVG-DEBT-OUTSTANDING] 0
[AVG-DEBT-PER-SHARE] 0
<FN>
<F1>ANNUALIZED.
</FN>
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
STATEMENT OF ASSETS AND LIABILITIES, STATEMENT OF OPERATIONS, AND STATEMENT OF
CHANGES IN NET ASSETS FOUND ON PAGES 84 THROUGH 106 OF THE FORTIS SERIES FUND,
INC. SEMI-ANNUAL SHAREHOLDER REPORT.
</LEGEND>
<CIK> 0000790558
<NAME> FORTIS SERIES FUND, INC.
<SERIES>
<NUMBER> 17
<NAME> LARGE CAP GROWTH SERIES
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<S> <C>
<PERIOD-TYPE> 6-MOS
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[AVG-DEBT-OUTSTANDING] 0
[AVG-DEBT-PER-SHARE] 0
<FN>
<F1>ANNUALIZED.
</FN>
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
STATEMENT OF ASSETS AND LIABILIES, STATEMENT OF OPERATIONS, AND STATEMENT OF
CHANGES IN NET ASSETS FOUND ON PAGES 84 THROUGH 102 OF THE FORTIS SERIES FUND,
INC. SEMI-ANNUAL SHAREHOLDER REPORT.
</LEGEND>
<CIK> 0000790558
<NAME> FORTIS SERIES FUND, INC.
<SERIES>
<NUMBER> 04
<NAME> ASSET ALLOCATION SERIES
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<S> <C>
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[AVG-DEBT-OUTSTANDING] 0
[AVG-DEBT-PER-SHARE] 0
<FN>
<F1>ANNUALIZED.
</FN>
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
STATEMENT OF ASSETS AND LIABILITIES, STATEMENT OF OPERATIONS, AND STATEMENT OF
CHANGES IN NET ASSETS FOUND ON PAGES 84 THROUGH 105 OF THE FORTIS SERIES FUND,
INC. SEMI-ANNUAL SHAREHOLDER REPORT.
</LEGEND>
<CIK> 0000790558
<NAME> FORTIS SERIES FUND, INC.
<SERIES>
<NUMBER> 16
<NAME> MID CAP STOCK SERIES
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<S> <C>
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[AVG-DEBT-OUTSTANDING] 0
[AVG-DEBT-PER-SHARE] 0
<FN>
<F1>ANNUALIZED.
</FN>
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
STATEMENT OF ASSETS AND LIABILITIES, STATEMENT OF OPERATIONS, AND STATMENT OF
CHANGES IN NET ASSETS FOUND ON PAGES 84 THROUGH 99 OF THE FORTIS SERIES FUND,
INC. SEMI-ANNUAL SHAREHOLDER REPORT.
</LEGEND>
<CIK> 0000790558
<NAME> FORTIS SERIES FUND, INC.
<SERIES>
<NUMBER> 03
<NAME> MONEY MARKET SERIES
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<S> <C>
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[AVG-DEBT-OUTSTANDING] 0
[AVG-DEBT-PER-SHARE] 0
<FN>
<F1>ANNUALIZED.
</FN>
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
STATEMENT OF ASSETS AND LIABILITIES, STATEMENT OF OPERATIONS, AND STATEMENT OF
CHANGES IN NET ASSETS FOUND ON PAGES 84 THROUGH 105 OF THE FORTIS SERIES FUND,
INC. SEMI-ANNUAL SHAREHOLDER REPORT.
</LEGEND>
<CIK> 0000790558
<NAME> FORTIS SERIES FUND, INC.
<SERIES>
<NUMBER> 18
<NAME> SMALL CAP VALUE SERIES
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<S> <C>
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<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 112,231
<AVERAGE-NET-ASSETS> 21,512,320
<PER-SHARE-NAV-BEGIN> 9.28
<PER-SHARE-NII> 0.06
<PER-SHARE-GAIN-APPREC> 1.45
<PER-SHARE-DIVIDEND> 0
<PER-SHARE-DISTRIBUTIONS> 0
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 10.79
<EXPENSE-RATIO> 1.06<F1>
[AVG-DEBT-OUTSTANDING] 0
[AVG-DEBT-PER-SHARE] 0
<FN>
<F1>ANNUALIZED.
</FN>
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
STATEMENT OF ASSETS AND LIABILITIES, STATEMENT OF OPERATIONS, AND STATEMENT OF
CHANGES IN NET ASSETS FOUND ON PAGES 84 THROUGH 103 OF THE FORTIS SERIES FUND,
INC. SEMI-ANNUAL SHAREHOLDER REPORT.
</LEGEND>
<CIK> 0000790558
<NAME> FORTIS SERIES FUND, INC.
<SERIES>
<NUMBER> 14
<NAME> S & P 500 INDEX SERIES
<MULTIPLIER> 1
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> DEC-31-1999
<PERIOD-START> JAN-01-1999
<PERIOD-END> JUN-30-1999
<INVESTMENTS-AT-COST> 264,804,551
<INVESTMENTS-AT-VALUE> 351,599,725
<RECEIVABLES> 3,354,321
<ASSETS-OTHER> 67,422,263<F1>
<OTHER-ITEMS-ASSETS> 4,972
<TOTAL-ASSETS> 422,381,281
<PAYABLE-FOR-SECURITIES> 427,040
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 67,580,776<F1>
<TOTAL-LIABILITIES> 68,007,816
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 264,039,537
<SHARES-COMMON-STOCK> 16,793,906
<SHARES-COMMON-PRIOR> 13,423,931
<ACCUMULATED-NII-CURRENT> 1,504,617
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 1,786,437
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 87,042,874
<NET-ASSETS> 354,373,465
<DIVIDEND-INCOME> 1,972,669
<INTEREST-INCOME> 179,988
<OTHER-INCOME> 15,269<F2>
<EXPENSES-NET> (684,214)
<NET-INVESTMENT-INCOME> 1,483,712
<REALIZED-GAINS-CURRENT> 1,676,938
<APPREC-INCREASE-CURRENT> 31,313,976
<NET-CHANGE-FROM-OPS> 34,474,626
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 0
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 4,223,359
<NUMBER-OF-SHARES-REDEEMED> (853,384)
<SHARES-REINVESTED> 0
<NET-CHANGE-IN-ASSETS> 101,541,489
<ACCUMULATED-NII-PRIOR> 20,905
<ACCUMULATED-GAINS-PRIOR> 109,499
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 600,503
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 684,214
<AVERAGE-NET-ASSETS> 302,477,440
<PER-SHARE-NAV-BEGIN> 18.83
<PER-SHARE-NII> 0.09
<PER-SHARE-GAIN-APPREC> 2.18
<PER-SHARE-DIVIDEND> 0
<PER-SHARE-DISTRIBUTIONS> 0
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 21.10
<EXPENSE-RATIO> 0.46<F3>
[AVG-DEBT-OUTSTANDING] 0
[AVG-DEBT-PER-SHARE] 0
<FN>
<F1>SECURITIES VALUED AT $66,298,006 WERE ON LOAN TO BROKERS FROM THE PORTFOLIO.
FOR COLLATERAL, THE PORTFOLIO'S CUSTODIAN RECEIVED $67,422,263 IN CASH.
<F2>SECURITY LENDING INCOME THROUGH JUNE 30, 1999.
<F3>ANNUALIZED.
</FN>
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
STATEMENT OF ASSETS AND LIABILITIES, STATEMENT OF OPERATIONS, AND STATEMENT OF
CHANGES IN NET ASSETS FOUND ON PAGES 84 THROUGH 99 OF THE FORTIS SERIES FUND,
INC. SEMI-ANNUAL SHAREHOLDER REPORT.
</LEGEND>
<CIK> 0000790558
<NAME> FORTIS SERIES FUND, INC.
<SERIES>
<NUMBER> 02
<NAME> U.S. GOVERNMENT SECURITIES SERIES
<MULTIPLIER> 1
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> DEC-31-1999
<PERIOD-START> JAN-01-1999
<PERIOD-END> JUN-30-1999
<INVESTMENTS-AT-COST> 148,843,981
<INVESTMENTS-AT-VALUE> 148,268,407
<RECEIVABLES> 1,227,971
<ASSETS-OTHER> 0
<OTHER-ITEMS-ASSETS> 2,569
<TOTAL-ASSETS> 149,498,947
<PAYABLE-FOR-SECURITIES> 1,437,891
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 137,577
<TOTAL-LIABILITIES> 1,575,468
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 154,971,665
<SHARES-COMMON-STOCK> 13,833,730
<SHARES-COMMON-PRIOR> 13,970,615
<ACCUMULATED-NII-CURRENT> 12,162,393
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> (18,635,005)
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> (575,574)
<NET-ASSETS> 147,923,479
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 4,582,054
<OTHER-INCOME> 0
<EXPENSES-NET> (388,476)
<NET-INVESTMENT-INCOME> 4,193,578
<REALIZED-GAINS-CURRENT> (1,341,674)
<APPREC-INCREASE-CURRENT> (6,133,560)
<NET-CHANGE-FROM-OPS> (3,281,656)
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 0
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 797,603
<NUMBER-OF-SHARES-REDEEMED> (934,488)
<SHARES-REINVESTED> 0
<NET-CHANGE-IN-ASSETS> (4,748,824)
<ACCUMULATED-NII-PRIOR> 7,968,815
<ACCUMULATED-GAINS-PRIOR> (17,293,331)
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 349,971
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 388,476
<AVERAGE-NET-ASSETS> 151,264,651
<PER-SHARE-NAV-BEGIN> 10.93
<PER-SHARE-NII> 0.31
<PER-SHARE-GAIN-APPREC> (0.55)
<PER-SHARE-DIVIDEND> 0
<PER-SHARE-DISTRIBUTIONS> 0
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 10.69
<EXPENSE-RATIO> 0.52<F1>
[AVG-DEBT-OUTSTANDING] 0
[AVG-DEBT-PER-SHARE] 0
<FN>
<F1>ANNUALIZED.
</FN>
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
STATEMENT OF ASSETS AND LIABILITIES, STATEMENT OF OPERATIONS, AND STATEMENT OF
CHANGES IN NET ASSETS FOUND ON PAGES 84 THROUGH 102 OF THE FORTIS SERIES FUND,
INC. SEMI-ANNUAL SHAREHOLDER REPORT.
</LEGEND>
<CIK> 0000790558
<NAME> FORTIS SERIES FUND, INC.
<SERIES>
<NUMBER> 13
<NAME> VALUE SERIES
<MULTIPLIER> 1
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> DEC-31-1999
<PERIOD-START> JAN-01-1999
<PERIOD-END> JUN-30-1999
<INVESTMENTS-AT-COST> 87,975,652
<INVESTMENTS-AT-VALUE> 96,888,594
<RECEIVABLES> 3,598,642
<ASSETS-OTHER> 19,651,800<F1>
<OTHER-ITEMS-ASSETS> 1,700
<TOTAL-ASSETS> 120,140,736
<PAYABLE-FOR-SECURITIES> 4,207,474
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 19,732,357<F1>
<TOTAL-LIABILITIES> 23,939,831
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 77,879,463
<SHARES-COMMON-STOCK> 6,055,343
<SHARES-COMMON-PRIOR> 6,094,107
<ACCUMULATED-NII-CURRENT> 488,999
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 8,919,501
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 8,912,942
<NET-ASSETS> 96,200,905
<DIVIDEND-INCOME> 752,060
<INTEREST-INCOME> 64,231
<OTHER-INCOME> 4,928<F2>
<EXPENSES-NET> (341,651)
<NET-INVESTMENT-INCOME> 479,568
<REALIZED-GAINS-CURRENT> 7,962,792
<APPREC-INCREASE-CURRENT> 662,967
<NET-CHANGE-FROM-OPS> 9,105,327
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 0
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 330,183
<NUMBER-OF-SHARES-REDEEMED> (368,947)
<SHARES-REINVESTED> 0
<NET-CHANGE-IN-ASSETS> 8,596,512
<ACCUMULATED-NII-PRIOR> 9,431
<ACCUMULATED-GAINS-PRIOR> 956,709
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 313,663
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 341,651
<AVERAGE-NET-ASSETS> 90,170,365
<PER-SHARE-NAV-BEGIN> 14.38
<PER-SHARE-NII> 0.08
<PER-SHARE-GAIN-APPREC> 1.43
<PER-SHARE-DIVIDEND> 0
<PER-SHARE-DISTRIBUTIONS> 0
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 15.89
<EXPENSE-RATIO> 0.76<F3>
[AVG-DEBT-OUTSTANDING] 0
[AVG-DEBT-PER-SHARE] 0
<FN>
<F1>SECURITIES VALUED AT $19,604,072 WERE ON LOAN TO BROKERS FROM THE PORTFOLIO.
FOR COLLATERAL, THE PORTFOLIO'S CUSTODIAN RECEIVED $19,651,800 IN CASH.
<F2>SECURITY LENDING INCOME THROUGH JUNE 30, 1999.
<F3>ANNUALIZED.
</FN>
</TABLE>
Attachment to Form N-SAR Sub-Item 77C
Fortis Series Fund, Inc.
At a special meeting of shareholders, held on August
12, 1999, the following individuals were elected as
directors: Richard W. Cutting, Allen R. Freedman, Dr.
Robert M. Gavin, Jean L. King, Dean C. Kopperud, Robb
L. Prince, Leonard J. Santow, Noel S. Shadko and Joseph
M. Wikler. Edward M. Mahoney, a current director of
the Fund, is retiring at the end of 1999. Greater than
97% of the Fund's outstanding shares were voted
affirmatively for each of the directors elected at this
meeting.
At this same meeting shareholders approved the
following proposals:
- - The elimination or modification of certain
fundamental investment policies, namely:
- The policies regarding borrowing and the
issuance of senior securities were modified so
that each Series will not borrow money or issue
senior securities, except as permitted under the
Investment Company Act of 1940, as amended, and as
interpreted or modified from time to time by any
regulatory authority having jurisdiction. The
shareholders of each Series voting on this
modification approved the proposal at a rate
ranging between 88.32%-94.01% of the outstanding
shares.
- The policy regarding concentration in a
particular industry was modified so that each
Series will not concentrate its investments in a
particular industry, as that term is used in the
Investment Company Act of 1940, as amended, and as
interpreted or modified from time to time by any
regulatory authority having jurisdiction. For
purposes of this limitation, the U.S. Government,
and state or municipal governments and their
political subdivisions, are not considered members
of any industry. In addition, for Money Market
Series only, this limitation does not apply to
investments in domestic banks. The shareholders of
each Series voting on this modification approved
the proposal at a rate ranging between 88.71%-
94.01%.
- The policy regarding the underwriting of
securities was modified. As a result of this
modification, each Series will not act as an
underwriter of securities of other issuers, except
to the extent that, in connection with the
disposition of portfolio securities, it may be
deemed an underwriter under applicable laws. The
shareholders of each Series voting on this
modification approved the proposal at a rate
ranging between 88.97%-94.18%.
- The policy regarding investments in real estate
was modified so that each Series will not purchase
or sell real estate unless acquired as a result of
ownership of securities or other instruments, but
this shall not prevent the Series from investing
in securities or other instruments backed by real
estate or interests therein or in securities of
companies that deal in real estate or mortgages.
The shareholders of each Series voting on this
modification approved the proposal at a rate
ranging between 88.71%-94.18%.
- The policy regarding the purchase of commodities
was modified so that each Series will not purchase
physical commodities or contracts relating to
physical commodities. The shareholders of each
Series voting on this modification approved the
proposal at a rate ranging between 88.59%-93.93%.
- The policy regarding lending was modified so
that the Series may not make loans except as
permitted under the Investment Company Act of
1940, as amended, and as interpreted or modified
from time to time by any regulatory authority
having jurisdiction. The shareholders of each
Series voting on this modification approved the
proposal at a rate ranging between 88.59%-92.59%.
- The policy restricting certain Series ability to
pledge, mortgage or hypothecate their assets were
eliminated. The Series originally adopted these
fundamental policies in order to comply with state
securities laws that no longer apply.
Shareholders of each Series voting on this
proposal approved the elimination of this policy
at a rate ranging between 88.71%-92.41%.
- The policy prohibiting the short sales of
securities by certain Series was eliminated. The
Series had adopted these policies in order to
comply with state securities laws that no longer
apply. Shareholders of each Series voting on this
proposal approved the elimination of this policy
at a rate ranging between 87.77%-92.28%.
- The policy restricting margin purchases of
certain Series was eliminated. Shareholders of
each Series voting on this proposal approved the
elimination of this policy at a rate ranging
between 88.89%-92.24%.
- The policy prohibiting certain Series
transactions with affiliates was eliminated. This
policy is not necessary as these transactions are
prohibited by the 1940 Act. Shareholders of each
Series voting on this proposal approved the
elimination of this policy at a rate ranging
between 88.71%-91.70%.
- The policy prohibiting certain Series from
participating in a joint trading account was
eliminated. This policy is not necessary as
participation in joint trading accounts is
prohibited by the 1940 Act. Shareholders of each
Series voting on this proposal approved the
elimination of this policy at a rate ranging
between 88.71%-91.70%.
- The policy limiting certain Series from
investing more than 5% of the value of its assets
in restricted securities was eliminated.
Shareholders of each Series voting on this
proposal approved the elimination of this policy
at a rate ranging between 88.62%-91.69%.
- The policy prohibiting certain Series investment
in options transactions was eliminated.
Shareholders of each Series voting on this
proposal approved the elimination of this policy
at a rate ranging between 88.60%-91.69%.
- Certain policies related to the diversification
of certain Series were eliminated. Shareholders
of each Series voting on this proposal approved
the elimination of these policies at a rate
ranging between 88.97%-92.07%.
- - To permit Fortis Advisers, Inc. to select and
contract with sub-advisers without obtaining
shareholder approval. This proposal was approved by
shareholders of each Series at a rate ranging between
82.83%-92.25%.
- - To approve an amended investment advisory and
management agreement between Fortis Series Fund, Inc.
and Fortis Advisers, Inc. This proposal was approved
by shareholders of each Series at a rate ranging
between 86.41%-93.78%.
- - To ratify KPMG LLP as the independent public
accountants of Fortis Series Fund, Inc. This proposal
was approved by shareholders of each Series at a rate
ranging between 91.30%-96.17%
