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<PAGE> PAGE 17
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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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025 A000701 FIRST BANK (N.A.)MINNEAPOLIS
025 B000701 41-0256395
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<PAGE> PAGE 23
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<PAGE> PAGE 24
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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 34
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<PAGE> PAGE 35
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025 A001201 FIRST BANK (N.A.) MINNEAPOLIS
025 B001201 41-0256395
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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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025 A001301 CHASE MANHATTAN CORP.
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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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076 001300 0.00
025 A001401 MERRILL LYNCH, PIERCE, FENNER & SMITH, INC.
025 B001401 13-5674085
025 C001401 E
025 D001401 321
025 A001402 MORGAN STANLEY & CO., INC.
025 B001402 13-2655998
025 C001402 E
025 D001402 474
025 A001403 U.S. BANCORP
025 B001403 41-0256395
025 C001403 E
025 D001403 376
025 A001404 DELETE
025 D001404 0
025 A001405 NATIONSBANK CORP.
025 B001405 56-1684171
025 C001405 E
025 D001405 597
025 A001406 FIRST CHICAGO CAPITAL MARKETS, INC.
025 B001406 36-3595942
025 C001406 E
025 D001406 342
025 A001407 CHASE MANHATTAN CORP.
025 B001407 41-0988154
025 C001407 E
025 D001407 635
025 D001408 0
028 A011400 11087
028 A021400 0
028 A031400 0
028 A041400 984
028 B011400 7014
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028 B031400 0
028 B041400 1538
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<PAGE> PAGE 42
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028 C041400 1554
028 D011400 8894
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028 D041400 2298
028 E011400 8960
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028 F041400 1576
028 G011400 51558
028 G021400 1677
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028 G041400 9196
028 H001400 0
062 A001400 N
062 B001400 0.0
062 C001400 0.0
062 D001400 0.0
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062 F001400 0.0
062 G001400 0.0
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<PAGE> PAGE 43
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<PAGE> PAGE 44
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025 A001501 CHASE MANHATTAN CORP.
025 B001501 41-0988154
025 C001501 E
025 D001501 767
025 A001502 NATIONSBANK CORP.
025 B001502 56-1684171
025 C001502 E
025 D001502 444
025 A001503 U.S. BANCORP
025 B001503 41-0256395
025 C001503 E
025 D001503 716
025 A001504 MORGAN STANLEY, DEAN WITTER, DISCOVER
025 B001504 13-2655998
025 C001504 E
025 D001504 207
025 D001505 0
025 D001506 0
025 D001507 0
025 D001508 0
028 A011500 5586
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<PAGE> PAGE 45
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<PAGE> PAGE 46
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SIGNATURE TAMARA L. FAGELY
TITLE TREASURER
<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 68 through 87 of the 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> 12-MOS
<FISCAL-YEAR-END> DEC-31-1997
<PERIOD-START> JAN-01-1997
<PERIOD-END> DEC-31-1997
<INVESTMENTS-AT-COST> 46,848,596
<INVESTMENTS-AT-VALUE> 52,387,365
<RECEIVABLES> 590,383
<ASSETS-OTHER> 0
<OTHER-ITEMS-ASSETS> 544,963
<TOTAL-ASSETS> 53,522,711
<PAYABLE-FOR-SECURITIES> 969,297
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 71,022
<TOTAL-LIABILITIES> 1,040,319
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 46,194,373
<SHARES-COMMON-STOCK> 3,949,879
<SHARES-COMMON-PRIOR> 3,022,304
<ACCUMULATED-NII-CURRENT> 115,734
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 600,021
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 5,572,264
<NET-ASSETS> 52,482,392
<DIVIDEND-INCOME> 444,689
<INTEREST-INCOME> 1,171,184
<OTHER-INCOME> 0
<EXPENSES-NET> (524,566)
<NET-INVESTMENT-INCOME> 1,091,307
<REALIZED-GAINS-CURRENT> 2,194,474
<APPREC-INCREASE-CURRENT> 2,474,960
<NET-CHANGE-FROM-OPS> 5,760,741
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (958,004)
<DISTRIBUTIONS-OF-GAINS> (1,725,819)
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 916,423
<NUMBER-OF-SHARES-REDEEMED> (192,721)
<SHARES-REINVESTED> 203,873
<NET-CHANGE-IN-ASSETS> 15,175,360
<ACCUMULATED-NII-PRIOR> 78,306
<ACCUMULATED-GAINS-PRIOR> 35,491
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 406,583
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 524,566
<AVERAGE-NET-ASSETS> 45,061,000
<PER-SHARE-NAV-BEGIN> 12.34
<PER-SHARE-NII> .28
<PER-SHARE-GAIN-APPREC> 1.39
<PER-SHARE-DIVIDEND> (.26)
<PER-SHARE-DISTRIBUTIONS> (.46)
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 13.29
<EXPENSE-RATIO> 1.16
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
<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 68 through 87 of the annual shareholder
report.
</LEGEND>
<CIK> 0000790558
<NAME> FORTIS SERIES FUND, INC.
<SERIES>
<NUMBER> 09
<NAME> AGGRESSIVE GROWTH SERIES
<MULTIPLIER> 1
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> DEC-31-1997
<PERIOD-START> JAN-01-1997
<PERIOD-END> DEC-31-1997
<INVESTMENTS-AT-COST> 94,210,383
<INVESTMENTS-AT-VALUE> 122,457,291
<RECEIVABLES> 86,966
<ASSETS-OTHER> 14,743,210<F1>
<OTHER-ITEMS-ASSETS> 352
<TOTAL-ASSETS> 137,287,819
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 14,832,659<F1>
<TOTAL-LIABILITIES> 14,832,659
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 109,700,349
<SHARES-COMMON-STOCK> 8,864,746
<SHARES-COMMON-PRIOR> 7,116,883
<ACCUMULATED-NII-CURRENT> 251,124
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> (15,743,221)
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 28,246,908
<NET-ASSETS> 122,455,160
<DIVIDEND-INCOME> 17,840
<INTEREST-INCOME> 976,563
<OTHER-INCOME> 65,562<F2>
<EXPENSES-NET> (808,484)
<NET-INVESTMENT-INCOME> 251,481
<REALIZED-GAINS-CURRENT> (9,457,837)
<APPREC-INCREASE-CURRENT> 12,954,426
<NET-CHANGE-FROM-OPS> 3,748,070
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (1,710)
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 2,311,002
<NUMBER-OF-SHARES-REDEEMED> (563,264)
<SHARES-REINVESTED> 125
<NET-CHANGE-IN-ASSETS> 25,524,397
<ACCUMULATED-NII-PRIOR> 1,353
<ACCUMULATED-GAINS-PRIOR> (6,285,384)
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 735,430
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 808,484
<AVERAGE-NET-ASSETS> 105,999,000
<PER-SHARE-NAV-BEGIN> 13.62
<PER-SHARE-NII> .03
<PER-SHARE-GAIN-APPREC> .16
<PER-SHARE-DIVIDEND> 0
<PER-SHARE-DISTRIBUTIONS> 0
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 13.81
<EXPENSE-RATIO> .76
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
<FN>
<F1>Securities valued at $11,145,822 were on loan to brokers from the portfolio.
For collateral, the portfolio's custodian received $14,743,210 in cash.
<F2>Security lending income through December 31, 1997.
</FN>
</TABLE>
<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 68 through 87 of the 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> 12-MOS
<FISCAL-YEAR-END> DEC-31-1997
<PERIOD-START> JAN-01-1997
<PERIOD-END> DEC-31-1997
<INVESTMENTS-AT-COST> 67,334,777
<INVESTMENTS-AT-VALUE> 79,328,273
<RECEIVABLES> 376,274
<ASSETS-OTHER> 0
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 79,704,547
<PAYABLE-FOR-SECURITIES> 903,415
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 72,525
<TOTAL-LIABILITIES> 975,940
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 67,072,044
<SHARES-COMMON-STOCK> 5,335,633
<SHARES-COMMON-PRIOR> 1,508,633
<ACCUMULATED-NII-CURRENT> 24,616
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> (361,497)
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 11,993,444
<NET-ASSETS> 78,728,607
<DIVIDEND-INCOME> 538,666
<INTEREST-INCOME> 262,705
<OTHER-INCOME> 0
<EXPENSES-NET> (460,591)
<NET-INVESTMENT-INCOME> 340,780
<REALIZED-GAINS-CURRENT> (357,643)
<APPREC-INCREASE-CURRENT> 10,236,126
<NET-CHANGE-FROM-OPS> 10,219,263
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (317,040)
<DISTRIBUTIONS-OF-GAINS> (14,834)
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 3,878,517
<NUMBER-OF-SHARES-REDEEMED> (74,415)
<SHARES-REINVESTED> 22,898
<NET-CHANGE-IN-ASSETS> 61,122,449
<ACCUMULATED-NII-PRIOR> 777
<ACCUMULATED-GAINS-PRIOR> 11,079
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 407,113
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 460,591
<AVERAGE-NET-ASSETS> 45,249,000
<PER-SHARE-NAV-BEGIN> 11.67
<PER-SHARE-NII> .07
<PER-SHARE-GAIN-APPREC> 3.08
<PER-SHARE-DIVIDEND> (.06)
<PER-SHARE-DISTRIBUTIONS> 0
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 14.76
<EXPENSE-RATIO> 1.02
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
<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 68 through 87 of the annual shareholder
report.
</LEGEND>
<CIK> 0000790558
<NAME> FORTIS SERIES FUND, INC.
<SERIES>
<NUMBER> 11
<NAME> GLOBAL BOND SERIES
<MULTIPLIER> 1
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> DEC-31-1997
<PERIOD-START> JAN-01-1997
<PERIOD-END> DEC-31-1997
<INVESTMENTS-AT-COST> 19,669,518
<INVESTMENTS-AT-VALUE> 19,423,087
<RECEIVABLES> 1,392,579
<ASSETS-OTHER> 0
<OTHER-ITEMS-ASSETS> 316,033
<TOTAL-ASSETS> 21,131,699
<PAYABLE-FOR-SECURITIES> 396,580
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 43,150
<TOTAL-LIABILITIES> 439,730
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 21,038,404
<SHARES-COMMON-STOCK> 1,943,330
<SHARES-COMMON-PRIOR> 1,820,600
<ACCUMULATED-NII-CURRENT> (201,281)
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 70,858
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> (216,012)
<NET-ASSETS> 20,691,969
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 1,098,594
<OTHER-INCOME> 0
<EXPENSES-NET> (219,259)
<NET-INVESTMENT-INCOME> 879,335
<REALIZED-GAINS-CURRENT> (482,718)
<APPREC-INCREASE-CURRENT> (360,352)
<NET-CHANGE-FROM-OPS> 36,265
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (692,786)
<DISTRIBUTIONS-OF-GAINS> (189,105)
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 342,502
<NUMBER-OF-SHARES-REDEEMED> (302,578)
<SHARES-REINVESTED> 82,806
<NET-CHANGE-IN-ASSETS> 464,348
<ACCUMULATED-NII-PRIOR> 162,922
<ACCUMULATED-GAINS-PRIOR> 188,958
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 149,694
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 219,259
<AVERAGE-NET-ASSETS> 19,979,000
<PER-SHARE-NAV-BEGIN> 11.11
<PER-SHARE-NII> .46
<PER-SHARE-GAIN-APPREC> (.45)
<PER-SHARE-DIVIDEND> (.37)
<PER-SHARE-DISTRIBUTIONS> (.10)
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 10.65
<EXPENSE-RATIO> 1.10
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
<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 68 through 87 of the annual shareholder
report.
</LEGEND>
<CIK> 0000790558
<NAME> FORTIS SERIES FUND, INC.
<SERIES>
<NUMBER> 08
<NAME> GROWTH & INCOME SERIES
<MULTIPLIER> 1
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> DEC-31-1997
<PERIOD-START> JAN-01-1997
<PERIOD-END> DEC-31-1997
<INVESTMENTS-AT-COST> 181,701,620
<INVESTMENTS-AT-VALUE> 244,275,838
<RECEIVABLES> 843,129
<ASSETS-OTHER> 22,880,235<F1>
<OTHER-ITEMS-ASSETS> 9,441
<TOTAL-ASSETS> 268,008,643
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 23,038,276<F1>
<TOTAL-LIABILITIES> 23,038,276
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 182,309,438
<SHARES-COMMON-STOCK> 13,061,059
<SHARES-COMMON-PRIOR> 8,898,856
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 86,711
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 62,574,218
<NET-ASSETS> 244,970,367
<DIVIDEND-INCOME> 4,980,436
<INTEREST-INCOME> 1,236,429
<OTHER-INCOME> 32,396<F2>
<EXPENSES-NET> (1,348,740)
<NET-INVESTMENT-INCOME> 4,900,521
<REALIZED-GAINS-CURRENT> 3,221,007
<APPREC-INCREASE-CURRENT> 37,967,041
<NET-CHANGE-FROM-OPS> 46,088,569
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (4,905,160)
<DISTRIBUTIONS-OF-GAINS> (2,662,426)
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 4,127,164
<NUMBER-OF-SHARES-REDEEMED> (371,603)
<SHARES-REINVESTED> 406,642
<NET-CHANGE-IN-ASSETS> 110,038,162
<ACCUMULATED-NII-PRIOR> 4,639
<ACCUMULATED-GAINS-PRIOR> (471,870)
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 1,250,461
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 1,348,740
<AVERAGE-NET-ASSETS> 191,038,000
<PER-SHARE-NAV-BEGIN> 15.16
<PER-SHARE-NII> .40
<PER-SHARE-GAIN-APPREC> 3.80
<PER-SHARE-DIVIDEND> (.39)
<PER-SHARE-DISTRIBUTIONS> (.21)
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 18.76
<EXPENSE-RATIO> .70
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
<FN>
<F1>Securities valued at $22,186,972 were on loan to borkers from the portfolio.
For collateral, the portfolio's custodian received $22,880,235 in cash.
<F2>Security Lending income through December 31, 1997.
</FN>
</TABLE>
<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 68 through 87 of the annual shareholder
report.
</LEGEND>
<CIK> 0000790558
<NAME> FORTIS SERIES FUND, INC.
<SERIES>
<NUMBER> 06
<NAME> GLOBAL GROWTH SERIES
<MULTIPLIER> 1
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> DEC-31-1997
<PERIOD-START> JAN-01-1997
<PERIOD-END> DEC-31-1997
<INVESTMENTS-AT-COST> 241,300,253
<INVESTMENTS-AT-VALUE> 353,663,590
<RECEIVABLES> 250,155
<ASSETS-OTHER> 93,459,385<F1>
<OTHER-ITEMS-ASSETS> 4,691
<TOTAL-ASSETS> 447,377,821
<PAYABLE-FOR-SECURITIES> 89,460
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 94,033,791<F1>
<TOTAL-LIABILITIES> 94,123,251
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 241,431,401
<SHARES-COMMON-STOCK> 17,409,548
<SHARES-COMMON-PRIOR> 16,836,922
<ACCUMULATED-NII-CURRENT> 390,257
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> (923,213)
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 112,356,125
<NET-ASSETS> 353,254,570
<DIVIDEND-INCOME> 1,586,209
<INTEREST-INCOME> 1,429,197
<OTHER-INCOME> 114,787<F2>
<EXPENSES-NET> (2,711,233)
<NET-INVESTMENT-INCOME> 418,960
<REALIZED-GAINS-CURRENT> 15,959,078
<APPREC-INCREASE-CURRENT> 6,804,752
<NET-CHANGE-FROM-OPS> 23,182,790
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 0
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 1,712,007
<NUMBER-OF-SHARES-REDEEMED> (1,139,381)
<SHARES-REINVESTED> 0
<NET-CHANGE-IN-ASSETS> 33,423,849
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> (16,910,994)
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 2,416,410
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 2,711,233
<AVERAGE-NET-ASSETS> 342,777,000
<PER-SHARE-NAV-BEGIN> 19.00
<PER-SHARE-NII> .02
<PER-SHARE-GAIN-APPREC> 1.27
<PER-SHARE-DIVIDEND> 0
<PER-SHARE-DISTRIBUTIONS> 0
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 20.29
<EXPENSE-RATIO> .79
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
<FN>
<F1>Securities valued at $87,825,722 were on loan to brokers from the portfolio.
For collateral, the portfolio's custodian recieved $93,459,385 in cash.
<F2>Security Lending income through December 31, 1997.
</FN>
</TABLE>
<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 68 through 87 of the annual shareholder
report.
</LEGEND>
<CIK> 0000790558
<NAME> FORTIS SERIES FUND, INC.
<SERIES>
<NUMBER> 01
<NAME> GROWTH STOCK SERIES
<MULTIPLIER> 1
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> DEC-31-1997
<PERIOD-START> JAN-01-1997
<PERIOD-END> DEC-31-1997
<INVESTMENTS-AT-COST> 427,875,757
<INVESTMENTS-AT-VALUE> 707,105,059
<RECEIVABLES> 951,097
<ASSETS-OTHER> 0
<OTHER-ITEMS-ASSETS> 266
<TOTAL-ASSETS> 708,056,422
<PAYABLE-FOR-SECURITIES> 436,797
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 464,839
<TOTAL-LIABILITIES> 901,636
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 391,374,022
<SHARES-COMMON-STOCK> 19,300,472
<SHARES-COMMON-PRIOR> 20,286,628
<ACCUMULATED-NII-CURRENT> 2,324,342
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 34,227,120
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 279,229,302
<NET-ASSETS> 707,154,786
<DIVIDEND-INCOME> 1,392,537
<INTEREST-INCOME> 5,548,454
<OTHER-INCOME> 0
<EXPENSES-NET> (4,616,544)
<NET-INVESTMENT-INCOME> 2,324,447
<REALIZED-GAINS-CURRENT> 38,901,237
<APPREC-INCREASE-CURRENT> 39,658,806
<NET-CHANGE-FROM-OPS> 80,884,490
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (66,251)
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 793,904
<NUMBER-OF-SHARES-REDEEMED> (1,781,802)
<SHARES-REINVESTED> 1,742
<NET-CHANGE-IN-ASSETS> 45,937,744
<ACCUMULATED-NII-PRIOR> 66,146
<ACCUMULATED-GAINS-PRIOR> (4,674,117)
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 4,268,503
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 4,616,544
<AVERAGE-NET-ASSETS> 689,529,000
<PER-SHARE-NAV-BEGIN> 32.59
<PER-SHARE-NII> .12
<PER-SHARE-GAIN-APPREC> 3.93
<PER-SHARE-DIVIDEND> 0
<PER-SHARE-DISTRIBUTIONS> 0
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 36.64
<EXPENSE-RATIO> .66
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
<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 68 through 87 of the annual shareholder
report.
</LEGEND>
<CIK> 0000790558
<NAME> FORTIS SERIES FUND, INC.
<SERIES>
<NUMBER> 07
<NAME> HIGH YIELD SERIES
<MULTIPLIER> 1
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> DEC-31-1997
<PERIOD-START> JAN-01-1997
<PERIOD-END> DEC-31-1997
<INVESTMENTS-AT-COST> 61,806,284
<INVESTMENTS-AT-VALUE> 59,645,944
<RECEIVABLES> 1,140,659
<ASSETS-OTHER> 0
<OTHER-ITEMS-ASSETS> 29,254
<TOTAL-ASSETS> 60,815,857
<PAYABLE-FOR-SECURITIES> 1,545,000
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 42,417
<TOTAL-LIABILITIES> 1,587,417
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 55,640,883
<SHARES-COMMON-STOCK> 5,499,676
<SHARES-COMMON-PRIOR> 4,333,334
<ACCUMULATED-NII-CURRENT> 5,343,079
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 404,818
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> (2,160,340)
<NET-ASSETS> 59,228,440
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 5,641,137
<OTHER-INCOME> 0
<EXPENSES-NET> (319,065)
<NET-INVESTMENT-INCOME> 5,322,072
<REALIZED-GAINS-CURRENT> 1,616,252
<APPREC-INCREASE-CURRENT> (2,246,434)
<NET-CHANGE-FROM-OPS> 4,691,890
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (78,830)
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 1,683,695
<NUMBER-OF-SHARES-REDEEMED> (524,733)
<SHARES-REINVESTED> 7,380
<NET-CHANGE-IN-ASSETS> 16,650,380
<ACCUMULATED-NII-PRIOR> 78,341
<ACCUMULATED-GAINS-PRIOR> (1,190,121)
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 258,195
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 319,065
<AVERAGE-NET-ASSETS> 51,489,000
<PER-SHARE-NAV-BEGIN> 9.83
<PER-SHARE-NII> .96
<PER-SHARE-GAIN-APPREC> 0
<PER-SHARE-DIVIDEND> (.02)
<PER-SHARE-DISTRIBUTIONS> 0
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 10.77
<EXPENSE-RATIO> .62
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
<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 68 through 87 of the annual shareholder
report.
</LEGEND>
<CIK> 0000790558
<NAME> FORTIS SERIES FUND, INC.
<SERIES>
<NUMBER> 05
<NAME> DIVERSIFIED INCOME SERIES
<MULTIPLIER> 1
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> DEC-31-1997
<PERIOD-START> JAN-01-1997
<PERIOD-END> DEC-31-1997
<INVESTMENTS-AT-COST> 101,059,571
<INVESTMENTS-AT-VALUE> 104,594,794
<RECEIVABLES> 1,497,927
<ASSETS-OTHER> 0
<OTHER-ITEMS-ASSETS> 433
<TOTAL-ASSETS> 106,093,154
<PAYABLE-FOR-SECURITIES> 826,515
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 66,699
<TOTAL-LIABILITIES> 893,214
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 103,800,815
<SHARES-COMMON-STOCK> 8,778,784
<SHARES-COMMON-PRIOR> 9,046,813
<ACCUMULATED-NII-CURRENT> 7,342,378
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> (9,478,476)
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 3,535,223
<NET-ASSETS> 105,199,940
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 7,897,617
<OTHER-INCOME> 0
<EXPENSES-NET> (571,970)
<NET-INVESTMENT-INCOME> 7,325,647
<REALIZED-GAINS-CURRENT> 269,397
<APPREC-INCREASE-CURRENT> 2,635,067
<NET-CHANGE-FROM-OPS> 10,230,111
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (7,379,990)
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 427,986
<NUMBER-OF-SHARES-REDEEMED> (1,340,634)
<SHARES-REINVESTED> 644,619
<NET-CHANGE-IN-ASSETS> (630,660)
<ACCUMULATED-NII-PRIOR> 7,379,870
<ACCUMULATED-GAINS-PRIOR> (9,731,022)
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 488,855
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 571,970
<AVERAGE-NET-ASSETS> 103,248,000
<PER-SHARE-NAV-BEGIN> 11.70
<PER-SHARE-NII> .91
<PER-SHARE-GAIN-APPREC> .26
<PER-SHARE-DIVIDEND> (.89)
<PER-SHARE-DISTRIBUTIONS> 0
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 11.98
<EXPENSE-RATIO> .55
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
<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 68 through 87 of the annual shareholder
report.
</LEGEND>
<CIK> 0000790558
<NAME> FORTIS SERIES FUND, INC.
<SERIES>
<NUMBER> 12
<NAME> INTERNATIONAL STOCK SERIES
<MULTIPLIER> 1
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> DEC-31-1997
<PERIOD-START> JAN-01-1997
<PERIOD-END> DEC-31-1997
<INVESTMENTS-AT-COST> 69,867,339
<INVESTMENTS-AT-VALUE> 79,025,707
<RECEIVABLES> 320,736
<ASSETS-OTHER> 0
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 79,346,443
<PAYABLE-FOR-SECURITIES> 108,892
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 95,123
<TOTAL-LIABILITIES> 204,015
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 70,102,082
<SHARES-COMMON-STOCK> 5,923,626
<SHARES-COMMON-PRIOR> 4,206,065
<ACCUMULATED-NII-CURRENT> 837,589
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> (950,590)
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 9,153,347
<NET-ASSETS> 79,142,428
<DIVIDEND-INCOME> 1,257,872
<INTEREST-INCOME> 208,910
<OTHER-INCOME> 0
<EXPENSES-NET> (727,749)
<NET-INVESTMENT-INCOME> 739,033
<REALIZED-GAINS-CURRENT> 2,268,127
<APPREC-INCREASE-CURRENT> 4,144,307
<NET-CHANGE-FROM-OPS> 7,151,467
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (862,090)
<DISTRIBUTIONS-OF-GAINS> (2,341,614)
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 1,745,215
<NUMBER-OF-SHARES-REDEEMED> (269,473)
<SHARES-REINVESTED> 241,819
<NET-CHANGE-IN-ASSETS> 26,811,087
<ACCUMULATED-NII-PRIOR> 45,335
<ACCUMULATED-GAINS-PRIOR> 38,208
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 571,117
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 727,749
<AVERAGE-NET-ASSETS> 66,777,000
<PER-SHARE-NAV-BEGIN> 12.44
<PER-SHARE-NII> .13
<PER-SHARE-GAIN-APPREC> 1.35
<PER-SHARE-DIVIDEND> (.15)
<PER-SHARE-DISTRIBUTIONS> (.41)
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 13.36
<EXPENSE-RATIO> 1.08
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
<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 68 through 87 of the annual shareholder
report.
</LEGEND>
<CIK> 0000790558
<NAME> FORTIS SERIES FUND, INC.
<SERIES>
<NUMBER> 04
<NAME> ASSET ALLOCATION SERIES
<MULTIPLIER> 1
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> DEC-31-1997
<PERIOD-START> JAN-01-1997
<PERIOD-END> DEC-31-1997
<INVESTMENTS-AT-COST> 395,746,997
<INVESTMENTS-AT-VALUE> 481,615,967
<RECEIVABLES> 2,722,873
<ASSETS-OTHER> 0
<OTHER-ITEMS-ASSETS> 11,614
<TOTAL-ASSETS> 484,350,454
<PAYABLE-FOR-SECURITIES> 1,643,250
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 427,175
<TOTAL-LIABILITIES> 2,070,425
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 394,367,219
<SHARES-COMMON-STOCK> 27,372,975
<SHARES-COMMON-PRIOR> 23,404,342
<ACCUMULATED-NII-CURRENT> 180,729
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 1,863,111
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 85,868,970
<NET-ASSETS> 482,280,029
<DIVIDEND-INCOME> 1,639,787
<INTEREST-INCOME> 14,586,854
<OTHER-INCOME> 0
<EXPENSES-NET> (2,334,382)
<NET-INVESTMENT-INCOME> 13,892,259
<REALIZED-GAINS-CURRENT> 52,435,168
<APPREC-INCREASE-CURRENT> 14,177,467
<NET-CHANGE-FROM-OPS> 80,504,894
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (13,911,747)
<DISTRIBUTIONS-OF-GAINS> (51,914,842)
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 1,768,619
<NUMBER-OF-SHARES-REDEEMED> (1,572,987)
<SHARES-REINVESTED> 3,773,001
<NET-CHANGE-IN-ASSETS> 84,567,696
<ACCUMULATED-NII-PRIOR> 156,227
<ACCUMULATED-GAINS-PRIOR> 1,386,775
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 2,102,625
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 2,334,382
<AVERAGE-NET-ASSETS> 437,903,000
<PER-SHARE-NAV-BEGIN> 16.99
<PER-SHARE-NII> .59
<PER-SHARE-GAIN-APPREC> 2.82
<PER-SHARE-DIVIDEND> (.59)
<PER-SHARE-DISTRIBUTIONS> (2.19)
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 17.62
<EXPENSE-RATIO> .53
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
<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 68 through 87 of the annual shareholder
report.
</LEGEND>
<CIK> 0000790558
<NAME> FORTIS SERIES FUND, INC.
<SERIES>
<NUMBER> 03
<NAME> MONEY MARKET SERIES
<MULTIPLIER> 1
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> DEC-31-1997
<PERIOD-START> JAN-01-1997
<PERIOD-END> DEC-31-1997
<INVESTMENTS-AT-COST> 57,311,050
<INVESTMENTS-AT-VALUE> 57,311,050
<RECEIVABLES> 10,747
<ASSETS-OTHER> 0
<OTHER-ITEMS-ASSETS> 50,879
<TOTAL-ASSETS> 57,372,676
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 363,441
<TOTAL-LIABILITIES> 363,441
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 53,776,965
<SHARES-COMMON-STOCK> 5,168,568
<SHARES-COMMON-PRIOR> 5,656,757
<ACCUMULATED-NII-CURRENT> 3,313,609
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> (81,339)
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 0
<NET-ASSETS> 57,009,235
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 3,557,402
<OTHER-INCOME> 0
<EXPENSES-NET> (243,422)
<NET-INVESTMENT-INCOME> 3,313,980
<REALIZED-GAINS-CURRENT> 0
<APPREC-INCREASE-CURRENT> 3,000
<NET-CHANGE-FROM-OPS> 3,316,980
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (2,705,380)
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 5,533,479
<NUMBER-OF-SHARES-REDEEMED> (6,270,961)
<SHARES-REINVESTED> 249,293
<NET-CHANGE-IN-ASSETS> (4,897,116)
<ACCUMULATED-NII-PRIOR> 2,705,009
<ACCUMULATED-GAINS-PRIOR> (100,451)
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 191,433
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 243,422
<AVERAGE-NET-ASSETS> 63,486,000
<PER-SHARE-NAV-BEGIN> 10.94
<PER-SHARE-NII> .58
<PER-SHARE-GAIN-APPREC> 0
<PER-SHARE-DIVIDEND> (.49)
<PER-SHARE-DISTRIBUTIONS> 0
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 11.03
<EXPENSE-RATIO> .38
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
<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 68 through 87 of the 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> 12-MOS
<FISCAL-YEAR-END> DEC-31-1997
<PERIOD-START> JAN-01-1997
<PERIOD-END> DEC-31-1997
<INVESTMENTS-AT-COST> 93,619,777
<INVESTMENTS-AT-VALUE> 108,345,824
<RECEIVABLES> 1,303,931
<ASSETS-OTHER> 0
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 109,649,755
<PAYABLE-FOR-SECURITIES> 17,308
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 60,680
<TOTAL-LIABILITIES> 77,988
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 94,696,902
<SHARES-COMMON-STOCK> 7,339,084
<SHARES-COMMON-PRIOR> 1,916,785
<ACCUMULATED-NII-CURRENT> 4,654
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 124,389
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 14,745,822
<NET-ASSETS> 109,571,767
<DIVIDEND-INCOME> 1,059,633
<INTEREST-INCOME> 124,372
<OTHER-INCOME> 0
<EXPENSES-NET> (317,140)
<NET-INVESTMENT-INCOME> 866,865
<REALIZED-GAINS-CURRENT> 847,118
<APPREC-INCREASE-CURRENT> 13,027,357
<NET-CHANGE-FROM-OPS> 14,741,340
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (869,171)
<DISTRIBUTIONS-OF-GAINS> (807,932)
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 6,825,585
<NUMBER-OF-SHARES-REDEEMED> (1,516,202)
<SHARES-REINVESTED> 112,916
<NET-CHANGE-IN-ASSETS> 87,593,178
<ACCUMULATED-NII-PRIOR> 6,792
<ACCUMULATED-GAINS-PRIOR> 85,203
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 251,081
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 317,140
<AVERAGE-NET-ASSETS> 62,616,000
<PER-SHARE-NAV-BEGIN> 11.47
<PER-SHARE-NII> .12
<PER-SHARE-GAIN-APPREC> 3.58
<PER-SHARE-DIVIDEND> (.12)
<PER-SHARE-DISTRIBUTIONS> (.12)
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 14.93
<EXPENSE-RATIO> .51
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
<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 68 through 87 of the 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> 12-MOS
<FISCAL-YEAR-END> DEC-31-1997
<PERIOD-START> JAN-01-1997
<PERIOD-END> DEC-31-1997
<INVESTMENTS-AT-COST> 139,596,083
<INVESTMENTS-AT-VALUE> 143,543,061
<RECEIVABLES> 1,007,089
<ASSETS-OTHER> 0
<OTHER-ITEMS-ASSETS> 109
<TOTAL-ASSETS> 144,550,259
<PAYABLE-FOR-SECURITIES> 1,486,750
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 993,645
<TOTAL-LIABILITIES> 2,480,395
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 149,014,644
<SHARES-COMMON-STOCK> 13,301,888
<SHARES-COMMON-PRIOR> 15,296,587
<ACCUMULATED-NII-CURRENT> 8,884,763
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> (19,776,521)
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 3,946,978
<NET-ASSETS> 142,069,864
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 9,668,172
<OTHER-INCOME> 0
<EXPENSES-NET> (795,419)
<NET-INVESTMENT-INCOME> 8,872,753
<REALIZED-GAINS-CURRENT> 1,395,092
<APPREC-INCREASE-CURRENT> 2,349,632
<NET-CHANGE-FROM-OPS> 12,617,477
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (10,456,044)
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 800,925
<NUMBER-OF-SHARES-REDEEMED> (3,815,885)
<SHARES-REINVESTED> 1,020,261
<NET-CHANGE-IN-ASSETS> (19,608,109)
<ACCUMULATED-NII-PRIOR> 10,455,469
<ACCUMULATED-GAINS-PRIOR> (21,159,028)
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 687,529
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 795,419
<AVERAGE-NET-ASSETS> 147,551,000
<PER-SHARE-NAV-BEGIN> 10.57
<PER-SHARE-NII> .80
<PER-SHARE-GAIN-APPREC> .12
<PER-SHARE-DIVIDEND> (.81)
<PER-SHARE-DISTRIBUTIONS> 0
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 10.68
<EXPENSE-RATIO> .54
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
<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 68 through 87 of the annual shareholder
report.
</LEGEND>
<CIK> 0000790558
<NAME> FORTIS SERIES FUND, INC.
<SERIES>
<NUMBER> 13
<NAME> VALUE SERIES
<MULTIPLIER> 1
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> DEC-31-1997
<PERIOD-START> JAN-01-1997
<PERIOD-END> DEC-31-1997
<INVESTMENTS-AT-COST> 50,424,242
<INVESTMENTS-AT-VALUE> 54,929,648
<RECEIVABLES> 171,359
<ASSETS-OTHER> 0
<OTHER-ITEMS-ASSETS> 42
<TOTAL-ASSETS> 55,101,049
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 43,147
<TOTAL-LIABILITIES> 43,147
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 50,082,063
<SHARES-COMMON-STOCK> 4,102,492
<SHARES-COMMON-PRIOR> 1,226,043
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 470,433
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 4,505,406
<NET-ASSETS> 55,057,902
<DIVIDEND-INCOME> 527,671
<INTEREST-INCOME> 206,549
<OTHER-INCOME> 0
<EXPENSES-NET> (272,270)
<NET-INVESTMENT-INCOME> 461,950
<REALIZED-GAINS-CURRENT> 3,157,481
<APPREC-INCREASE-CURRENT> 3,509,573
<NET-CHANGE-FROM-OPS> 7,129,004
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (467,774)
<DISTRIBUTIONS-OF-GAINS> (2,671,473)
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 2,752,180
<NUMBER-OF-SHARES-REDEEMED> (111,372)
<SHARES-REINVESTED> 235,641
<NET-CHANGE-IN-ASSETS> 41,106,427
<ACCUMULATED-NII-PRIOR> 5,662
<ACCUMULATED-GAINS-PRIOR> (15,575)
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 230,143
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 272,270
<AVERAGE-NET-ASSETS> 32,832,000
<PER-SHARE-NAV-BEGIN> 11.38
<PER-SHARE-NII> .12
<PER-SHARE-GAIN-APPREC> 2.75
<PER-SHARE-DIVIDEND> (.13)
<PER-SHARE-DISTRIBUTIONS> (.70)
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 13.42
<EXPENSE-RATIO> .83
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
KPMG Peat Marwick LLP
4200 Norwest Center
90 South Seventh Street
Minneapolis MN 55402
Independent Auditors' Report on Internal
Accounting Control
The Board of Directors and Shareholders
Fortis Series Fund, Inc.
In planning and performing our audits of the
financial statements of of Money Market Series,
U.S. Government Securities Series, Diversified
Income Series, Global Bond Series, High Yield
Series, Asset Allocation Series, Global Asset
Allocation Series, Value Series, Growth and
Income Series, S&P 500 Index Series, Blue Chip
Stock Series, Global Growth Series, Growth Stock
Series, International Stock Series, and
Aggressive Growth Series (portfolios within
Fortis Series Fund, Inc.) for the fiscal periods
ended December 31, 1997, we considered their
internal control structure, including procedures
for safeguarding securities, in order to
determine our auditing procedures for the purpose
of expressing our opinion on the financial
statements and to comply with the requirements of
Form N-SAR, not to provide assurance on the
internal control structure.
The management of the Company is responsible for
establishing and maintaining an internal control
structure. In fulfilling this responsibility,
estimates and judgments by management are
required to assess the expected benefits and
related costs of internal control structure
policies and procedures. Two of the objectives of
an internal control structure are to provide
management with reasonable, but not absolute,
assurance that assets are safeguarded against
loss from unauthorized use or disposition and
that transactions are executed in accordance with
management's authorization and recorded properly
to permit the preparation of financial statements
in conformity with generally accepted accounting
principles.
Because of inherent limitations in any internal
control structure, errors or irregularities may
occur and not be detected. Also, projection of
any evaluation of the structure to future periods
is subject to the risk that it may become
inadequate because of changes in conditions of
that the effectiveness of the design and
operation may deteriorate.
Our consideration of the internal control
structure would not necessarily disclose all
matters in the internal control structure that
might be material weaknesses under standards
established by the American Institute of
Certified Public Accountants. A material weakness
is a condition in which the design or operation
of the specific internal control structure
elements does not reduce to a relatively low
level the risk that errors or irregularities in
amounts that would be material in relation to the
financial statements being audited may occur and
not be detected within a timely period by
employees in the normal course of performing
their assigned functions. However, we noted no
matters involving the internal control structure,
including procedures for safeguarding securities,
that we consider to be material weaknesses as
defined above as of December 31, 1997.
This report is intended solely for the
information and use of management and the
Securities and Exchange Commission.
/s/
KPMG Peat Marwick LLP
Minneapolis Minnesota
February 6,1998
ITEM 77 O.
FORTIS SERIES FUND, INC.
From June 30, 1997 to December 31, 1997 the Global Asset
Allocation Series of Registrant, which is sub-advised by
Morgan Stanley Asset Management Limited, entered into two
Rule 10f-3 transactions. First, on October 20, 1997 2,300
shares of France Telecom (with a value of $430,100) were
purchased from Merrill Lynch International, a non-
affiliated brokerage firm. Members of the underwriting
syndicate included Morgan Stanley Dean Witter. Second, on
November 18, 1997 52,700 shares of Telestra Corporation
Limited (with a value of $105,400) were purchased from
J.B. Were & Son, a non-affiliated brokerage firm. Members
of the underwriting syndicated included Morgan Stanley
Dean Witter.
The determination required by Rule 10f-3(h)(3) with
respect to these transactions will be made at the
Registrant's next Board of Directors meeting scheduled
for March 19, 1998.
