FORTIS SERIES FUND INC
485BPOS, 1998-05-01
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<PAGE>
                                         1933 Act Registration No.  33-3920
                                         1940 Act Registration No. 811-4615

         AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON MAY 1, 1998

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                      SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                   FORM N-1A
            REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933
                      Pre-Effective Amendment No.      
                                                   ----
                     Post-Effective Amendment No.   23
                                                   ----
                                     AND/OR

                        REGISTRATION STATEMENT UNDER THE                
                         INVESTMENT COMPANY ACT OF 1940                 
                             Amendment No.    23                        
                                             ----
                        (Check appropriate box or boxes)

                            FORTIS SERIES FUND, INC.
               (Exact Name of Registrant as Specified in Charter)

                              500 Bielenberg Drive
                           Woodbury, Minnesota  55125
               (Address of Principal Executive Offices, Zip Code)

                                 (612) 738-4000
              (Registrant's Telephone Number, including Area Code)

                             Scott R. Plummer, Esq.
                              500 Bielenberg Drive
                           Woodbury, Minnesota  55125
                    (Name and Address of Agent for Service)

                                    COPY TO:
                            Michael J. Radmer, Esq.
                              Dorsey & Whitney LLP
                             220 South Sixth Street
                       Minneapolis, Minnesota  55402-1498

It is proposed that this filing will become effective (check appropriate box):

   X      immediately upon filing pursuant to paragraph (b) of Rule 485
 -----
          on (specify date) pursuant to paragraph (b) of Rule 485
 -----
          75 days after filing pursuant to paragraph (a) of Rule 485
 -----
          on (specify date) pursuant to paragraph (a) of Rule 485
 -----
          60 days after filing pursuant to paragraph (a) of Rule 485
 -----

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<PAGE>

                               FORTIS SERIES FUND, INC.
                         Registration Statement on Form N-1A

                           --------------------------------
                                Cross Reference Sheet
                               Pursuant to Rule 481(a)
                           --------------------------------

<TABLE>
<CAPTION>
Item No.                                               Prospectus Heading
- --------                                               ------------------

<S>                                                    <C>
1.   Cover Page. . . . . . . . . . . . . . . . . .     Cover Page (no caption)
2.   Synopsis. . . . . . . . . . . . . . . . . . .     (not included)
3.   Financial Highlights. . . . . . . . . . . . .     Financial Highlights
4.   General Description of Registrant . . . . . .     Organization and Classification;
                                                       The Separate Accounts and the Contracts,
                                                       Investment Objectives and Policies;
                                                       Risk Considerations
5.   Management of the Fund. . . . . . . . . . . .     Management
6.   Capital Stock and Other Securities. . . . . .     Capital Stock; Dividends and Capital
                                                       Gain Distributions; Taxation
7.   Purchase of Securities Being Offered. . . . .     Purchase and Redemption of Shares
8.   Redemption or Repurchase. . . . . . . . . . .     Purchase and Redemption of Shares
9.   Pending Legal Proceedings . . . . . . . . . .     Not Applicable

<CAPTION>
Heading                                                Statement of Additional Information
- -------                                                -----------------------------------
<S>                                                    <C>
10.  Cover Page. . . . . . . . . . . . . . . . . .     Cover Page (no caption)
11.  Table of Contents . . . . . . . . . . . . . .     Table of Contents
12.  General Information and History . . . . . . .     Organization and Classification
13.  Investment Objectives and Policies. . . . . .     Investment Objectives and Policies
14.  Management of the Fund. . . . . . . . . . . .     Directors and Executive Officers
15.  Control Persons and Principal
     Holders of Securities . . . . . . . . . . . .     Capital Stock
16.  Investment Advisory and Other
     Services. . . . . . . . . . . . . . . . . . .     Investment Advisory and Other
                                                       Services
17.  Brokerage Allocation and Other
     Practices . . . . . . . . . . . . . . . . . .     Portfolio Transactions and
                                                       Allocation of Brokerage
18.  Capital Stock and Other Securities. . . . . .     Capital Stock
19.  Purchase, Redemption and Pricing
     of Securities Being Offered . . . . . . . . .     Computation of Net Asset Value and
                                                       Pricing; Redemption
20.  Tax Status. . . . . . . . . . . . . . . . . .     Taxation
21.  Underwriters. . . . . . . . . . . . . . . . .     Underwriter
22.  Calculations of Performance Data. . . . . . .     Performance
23.  Financial Statements. . . . . . . . . . . . .     Financial Statements
</TABLE>
<PAGE>
 
   
<TABLE>
<S>                           <C>                          <C>
                                                           PROSPECTUS DATED
[LOGO]                        FORTIS SERIES FUND, INC.     May 1, 1998
MAILING ADDRESS:              (A fund with eighteen        STREET ADDRESS:
P.O. BOX 64582                separate series,             500 BIELENBERG DRIVE
ST. PAUL                      each with different goals    WOODBURY
MINNESOTA 55164               and investment policies)     MINNESOTA 55125
</TABLE>
    
 
   
Fortis  Series Fund, Inc. ("Fortis Series") is an open-end management investment
company (commonly known as a "mutual fund") that is intended to provide a  range
of  investment alternatives through its eighteen separate series (the "Series"),
each of which is, for  investment purposes, a separate  fund with its own  goals
and  investment policies.  Each Series  is diversified,  except the  Global Bond
Series, which is a nondiversified series.
    
 
   
Shares are  currently sold  to separate  accounts (the  "Separate Accounts")  of
Fortis  Benefits  Insurance Company  ("Fortis Benefits")  and First  Fortis Life
Insurance Company ("First Fortis"), which are the funding vehicles for  benefits
under  variable life  insurance policies  (the "Policies")  and variable annuity
contracts (the  "Annuities") (collectively,  the "Contracts")  issued by  Fortis
Benefits  and First  Fortis. The  Separate Accounts  invest in  shares of Fortis
Series through subaccounts that correspond to the different Series. The Separate
Accounts will redeem shares of Fortis Series to the extent necessary to  provide
benefits  under the Contracts  or for such  other purposes as  may be consistent
with the Contracts.
    
 
   
The investment objectives of each Series  are nonfundamental and may be  changed
at  any time without the approval  of Contract owners. The investment objectives
are:
    
 
- - The objectives  of  the "Money  Market  Series"  are high  levels  of  capital
  stability  and  liquidity and,  to the  extent  consistent with  these primary
  objectives, a high level of current income. Money Market Series will invest in
  a diversified  portfolio of  commercial paper  and other  debt securities.  AN
  INVESTMENT  IN MONEY  MARKET SERIES IS  NEITHER INSURED NOR  GUARANTEED BY THE
  U.S. GOVERNMENT.
 
- - The objective of the "U.S. Government Securities Series" is to maximize  total
  return  (from income  and market  value change),  while providing shareholders
  with a high level  of current income consistent  with prudent investment  risk
  through  investment primarily in  debt securities of  varying maturities which
  have been issued, guaranteed, insured  or collateralized by the United  States
  Government or its agencies or instrumentalities.
 
- - The  objective of the "Diversified Income  Series" is to maximize total return
  (from income and market value change), by investing primarily in a diversified
  portfolio of  government  securities  and investment  grade  corporate  bonds.
  However,  up to 30% of Diversified Income Series' total assets may be invested
  in non-investment grade corporate bonds and other securities.
 
- - The objective of the "Global Bond Series" is total return from current  income
  and capital appreciation. The Series invests in a global portfolio principally
  consisting  of  high  quality  fixed-income  securities  of  governmental  and
  corporate issuers  and  supranational  organizations,  which  securities  have
  varying maturities and are denominated in various currencies.
 
   
- - The  objective of the  "High Yield Series"  is to maximize  total return (from
  income  and  market  value  change)  by  investing  primarily  in  high-yield,
  high-risk   fixed-income  securities,  which  may  not  be  suitable  for  all
  investors.
    
 
   
- - The objective of the "Global Asset Allocation Series" is maximum total  return
  to  be derived primarily from capital appreciation, dividends and interest, by
  following a  flexible asset  allocation strategy.  This strategy  contemplates
  increased  ownership  of global  equity securities  during periods  when stock
  market  conditions  appear  favorable   and  increased  ownership  of   global
  fixed-income  securities during periods when  stock market conditions are less
  favorable.
    
 
   
- - The objective of  the "Asset  Allocation Series"  is maximum  total return  on
  invested capital to be derived primarily from capital appreciation, dividends,
  and   interest,  by  following  a  flexible  asset  allocation  strategy  that
  contemplates increased  ownership of  equity  securities during  periods  when
  stock market conditions appear favorable, and increased ownership of short and
  long  term debt  instruments during periods  when stock  market conditions are
  less favorable.
    
 
- - The primary objective  of the "Value  Series" is short  and long-term  capital
  appreciation. Current income is only a secondary objective. The Series invests
  primarily  in equity  securities and  selects stocks  based on  the concept of
  fundamental value.
 
   
- - The objectives of the  "Growth & Income Series"  are capital appreciation  and
  current  income  which  such Series  seeks  by investing  primarily  in equity
  securities that provide an income component and the potential for growth.
    
 
- - The objective of the "S&P 500 Index  Series" is to replicate the total  return
  of  the Standard  & Poor's 500  Composite Stock Price  Index primarily through
  investments in equity securities.
 
   
- - The primary objective of the "Blue  Chip Stock Series" is long-term growth  of
  capital.  Current income is a  secondary objective, and many  of the stocks in
  this Series' portfolio are expected to pay dividends.
    
 
   
- - The objective of the "International  Stock Series" is capital appreciation  by
  investing primarily in the equity securities of non-United States companies.
    
 
   
- - The  objective  of the  "Mid  Cap Stock  Series"  is total  investment returns
  (including capital appreciation and  income) that consistently outperform  the
  Standard  &  Poor's  400  MidCap  Index. The  Series  attempts  to  maintain a
  diversified holding in common stocks of medium capitalization companies with a
  market value between $200 million and $5 billion.
    
 
   
- - The objective of  the "Small Cap  Value Series" is  capital appreciation.  The
  Series  invests primarily in common stocks of  small companies that are out of
  favor with  markets  or that  have  not yet  been  discovered by  the  broader
  investment community and are therefore believed to be undervalued.
    
 
   
- - The  primary  objective of  the "Global  Growth  Series" is  long-term capital
  appreciation which it seeks  primarily by investing in  a global portfolio  of
  equity  securities,  allocated  among diverse  international  markets. Current
  income through  the receipt  of  income such  as  interest or  dividends  from
  investments is a secondary objective.
    
 
   
- - The objective of the "Large Cap Growth Series" is long-term growth of capital.
  The  Series invests primarily in the equity  securities of a limited number of
  large,  carefully  selected,  high  quality  United  States  companies   whose
  securities are believed likely to achieve superior earnings growth.
    
 
   
- - The  primary objective  of the  "Growth Stock  Series" is  short and long-term
  capital appreciation.  Current  income through  the  receipt of  interest  and
  dividends  will merely be incidental to the  efforts of Growth Stock Series in
  pursuing its primary objective.  Growth Stock Series will  seek to meet  these
  objectives  by investing primarily in common stocks and securities convertible
  into common stocks.
    
 
- - The objective of the "Aggressive  Growth Series" is maximum long-term  capital
  appreciation  by investing primarily in equity  securities of small and medium
  sized companies  that  are early  in  their life  cycles  but which  have  the
  potential  to become major enterprises and  of more established companies that
  have the potential for above-average capital growth.
 
   
This Prospectus  concisely sets  forth the  information a  prospective  investor
should  know about Fortis Series before  investing. Investors should retain this
Prospectus for  future  reference.  Fortis  Series  has  filed  a  Statement  of
Additional  Information  dated  May 1,  1998  with the  Securities  and Exchange
Commission (the  "Commission").  The  Statement  of  Additional  Information  is
available free of charge from Fortis Series at the above mailing address, and is
incorporated   by  reference  into  this   Prospectus  in  accordance  with  the
Commission's rules. The Commission maintains a World Wide Web site that contains
reports and  information regarding  issuers that  file electronically  with  the
Commission.  The address of such site  is "http://www.sec.gov." SHARES IN FORTIS
SERIES ARE NOT  DEPOSITS OR OBLIGATIONS  OF, OR GUARANTEED  OR ENDORSED BY,  ANY
BANK;  ARE NOT FEDERALLY  INSURED BY THE  FEDERAL DEPOSIT INSURANCE CORPORATION,
THE FEDERAL RESERVE BOARD,  OR ANY OTHER AGENCY;  AND INVOLVE INVESTMENT  RISKS,
INCLUDING THE POSSIBLE LOSS OF PRINCIPAL.
    
 
THESE  SECURITIES HAVE  NOT BEEN APPROVED  OR DISAPPROVED BY  THE SECURITIES AND
EXCHANGE COMMISSION OR ANY  STATE SECURITIES COMMISSION  NOR HAS THE  SECURITIES
AND  EXCHANGE  COMMISSION OR  ANY STATE  SECURITIES  COMMISSION PASSED  UPON THE
ACCURACY OR ADEQUACY OF THIS PROSPECTUS. ANY REPRESENTATION TO THE CONTRARY IS A
CRIMINAL OFFENSE.
 
   
No broker-dealer, sales representative, or  other person has been authorized  to
give  any information or to make  any representations other than those contained
in this Prospectus, and  if given or made,  such information or  representations
must  not be  relied upon  as having been  authorized by  Fortis Benefits, First
Fortis, Fortis Series or Fortis  Investors, Inc. ("Investors"). This  Prospectus
does  not constitute an  offer or solicitation  by anyone in  any state in which
such offer or solicitation is not authorized, or in which the person making such
offer or solicitation is not qualified to do so, or to any person to whom it  is
unlawful to make such offer or solicitation.
    
<PAGE>
TABLE OF CONTENTS
   
<TABLE>
<CAPTION>
                                                              PAGE
<S>                                                           <C>
Financial Highlights........................................    2
Performance Information.....................................    7
Organization and Classification.............................    8
Investment Objectives and Policies; Risk Considerations.....    8
    - Money Market Series...................................    8
    - U.S. Government Securities Series.....................    9
    - Diversified Income Series.............................   10
    - Global Bond Series....................................   10
    - High Yield Series.....................................   11
    - Global Asset Allocation Series........................   12
    - Asset Allocation Series...............................   12
    - Value Series..........................................   13
    - Growth & Income Series................................   13
    - S&P 500 Index Series..................................   13
    - Blue Chip Stock Series................................   14
    - International Stock Series............................   15
    - Mid Cap Stock Series..................................   16
    - Small Cap Value Series................................   16
    - Global Growth Series..................................   17
    - Large Cap Growth Series...............................   18
    - Growth Stock Series...................................   18
    - Aggressive Growth Series..............................   18
    - Investment Policies, Restrictions, and Risks
        Applicable to More Than One Series..................   19
    - General Risks to Consider.............................   25
 
<CAPTION>
                                                              PAGE
<S>                                                           <C>
Management..................................................   26
    - Board of Directors....................................   26
    - The Investment Adviser/Transfer Agent/Dividend Agent..   26
    - The Underwriter.......................................   26
    - Portfolio Management..................................   26
    - The Sub-Advisers......................................   27
    - Fees and Expenses.....................................   28
    - Brokerage Allocation..................................   28
The Separate Accounts and the Contracts.....................   29
    - Periodic Reports......................................   29
General Information.........................................   29
    - Voting Privileges.....................................   29
    - Year 2000.............................................   29
Dividends and Capital Gains Distributions...................   29
Taxation....................................................   29
Purchase and Redemption of Shares...........................   29
    - Generally.............................................   29
    - Offering Price........................................   29
    - Transfers Among Subaccounts...........................   30
    - Redemption............................................   30
Appendix....................................................   30
    - Commercial Paper Listings.............................   30
    - Corporate Bond Ratings................................   31
    - Preferred Stock Ratings...............................   32
</TABLE>
    
 
   
FINANCIAL HIGHLIGHTS
(For a share outstanding throughout the period)
    
 
   
The  following audited financial  highlights should be  read in conjunction with
the financial statements of the applicable Series and the independent  auditors'
report  of KPMG Peat Marwick  LLP found in Fortis  Series' 1997 Annual Report to
Shareholders, which  may be  obtained  without charge.  The selected  per  share
historical  data for each of  the Series is presented  based upon average shares
outstanding. Total return figures do not  reflect charges pursuant to the  terms
of the variable life insurance policies and variable annuity contracts funded by
separate  accounts  that  invest  in  the  Series'  shares.  Information  is not
presented for Large Cap Growth Series, Mid Cap Stock Series and Small Cap  Value
Series, because they had not commenced operations during the years presented.
    
 
   
<TABLE>
<CAPTION>
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<S>                        <C>        <C>        <C>        <C>        <C>        <C>        <C>       <C>       <C>       <C>
                                                                   YEAR ENDED DECEMBER 31,
MONEY MARKET SERIES          1997       1996       1995       1994       1993       1992       1991      1990      1989      1988
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Net asset value, beginning
 of period................  $10.94     $10.83     $10.63     $10.23     $10.21     $10.15     $10.19     $9.92     $9.65     $9.98
- -----------------------------------------------------------------------------------------------------------------------------------
Operations:
  Investment income --
   net....................     .58        .57        .60        .41        .28        .36        .62       .78       .77       .76
  Net realized and
   unrealized gains
   (losses) on
   investments............      --         --         --       (.01)       .02        .06       (.02)      .28       .27      (.29)
- -----------------------------------------------------------------------------------------------------------------------------------
Total from operations.....     .58        .57        .60        .40        .30        .42        .60      1.06      1.04       .47
- -----------------------------------------------------------------------------------------------------------------------------------
Distribution to
 shareholders:
  From investment income
   -- net.................    (.49)      (.46)      (.40)        --       (.28)      (.36)      (.64)     (.79)     (.77)     (.80)
- -----------------------------------------------------------------------------------------------------------------------------------
Net asset value, end of
 period...................  $11.03     $10.94     $10.83     $10.63     $10.23     $10.21     $10.15    $10.19     $9.92     $9.65
- -----------------------------------------------------------------------------------------------------------------------------------
Total return(@)...........    5.34%      5.17%      5.71%      3.92%      2.77%      3.36%      5.91%     7.87%     9.42%     6.78%
Net assets at end of
 period (000s omitted).... $57,009    $61,906    $41,807    $44,833    $28,682    $27,528    $10,737    $8,897    $2,868    $1,939
Ratio of expenses to
 average daily net
 assets...................     .38%       .38%       .40%       .40%       .44%       .46%       .55%      .60%      .60%      .60%
Ratio of net investment
 income to average daily
 net assets...............    5.19%      5.14%      5.44%      3.96%      2.74%      3.51%      5.74%     7.75%     8.03%     7.71%
Portfolio turnover rate...     N/A*       N/A*       N/A*       N/A*       N/A*       N/A*       N/A*       58%       19%       79%
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<FN>
 
  *Pursuant  to Rule 2a-7 under the Investment  Company Act of 1940, under which
   the Money  Market Series  began to  operate  on May  1, 1991,  the  portfolio
   turnover rate is not applicable.
 @These  are the Series' total returns during the period, including reinvestment
  of all dividend and capital gains distributions.
</TABLE>
    
 
                                       2
<PAGE>
 
   
<TABLE>
<CAPTION>
U.S. GOVERNMENT                                                 YEAR ENDED DECEMBER 31,
SECURITIES SERIES      1997        1996        1995        1994        1993        1992       1991       1990      1989      1988
<S>                  <C>         <C>         <C>         <C>         <C>         <C>        <C>        <C>        <C>       <C>
- -----------------------------------------------------------------------------------------------------------------------------------
Net asset value,
 beginning of
 period............    $10.57      $11.16       $9.40      $10.94      $10.73     $10.77      $9.80      $9.48     $9.04     $9.46
- -----------------------------------------------------------------------------------------------------------------------------------
Operations:
  Investment income
   -- net..........       .80         .67         .70         .71         .74        .78        .77        .76       .76       .85
  Net realized and
   unrealized gains
   (losses) on
   investments.....       .12        (.51)       1.06       (1.54)        .46        .15        .98        .31       .45      (.42)
- -----------------------------------------------------------------------------------------------------------------------------------
Total from
 operations........       .92         .16        1.76        (.83)       1.20        .93       1.75       1.07      1.21       .43
- -----------------------------------------------------------------------------------------------------------------------------------
Distribution to
 shareholders:
  From investment
   income -- net...      (.81)       (.75)         --        (.71)       (.74)      (.78)      (.78)      (.75)     (.77)     (.85)
  From net realized
   gains...........        --          --          --          --        (.24)      (.19)        --         --        --        --
  Excess
   distributions of
   net realized
   gains...........        --          --          --          --        (.01)        --         --         --        --        --
- -----------------------------------------------------------------------------------------------------------------------------------
Total distributions
 to shareholders...      (.81)       (.75)         --        (.71)       (.99)      (.97)      (.78)      (.75)     (.77)     (.85)
- -----------------------------------------------------------------------------------------------------------------------------------
Net asset value,
 end of period.....    $10.68      $10.57      $11.16       $9.40      $10.94     $10.73     $10.77      $9.80     $9.48     $9.04
- -----------------------------------------------------------------------------------------------------------------------------------
Total return(@)....      9.08%       2.21%      18.78%      (6.44)%      9.45%      6.14%     14.36%      7.93%    13.14%     6.36%
Net assets at end
 of period (000s
 omitted)..........  $142,070    $161,678    $182,687    $172,656    $235,588    $132,683   $49,751    $10,750    $2,520    $1,959
Ratio of expenses
 to average daily
 net assets........       .54%        .53%        .53%        .53%        .52%       .57%       .64%       .76%      .75%      .75%
Ratio of net
 investment income
 to average daily
 net assets........      6.03%       6.17%       6.78%       6.87%       6.49%      7.10%      7.57%      7.90%     8.55%     8.68%
Portfolio turnover
 rate..............       148%        176%        115%        187%        141%       135%        77%        17%       23%       83%
- -----------------------------------------------------------------------------------------------------------------------------------
</TABLE>
    
 
   
<TABLE>
<CAPTION>
DIVERSIFIED INCOME                                               YEAR ENDED DECEMBER 31,
SERIES                   1997        1996        1995        1994       1993       1992      1991      1990      1989       1988*
<S>                    <C>         <C>         <C>         <C>        <C>        <C>        <C>       <C>       <C>       <C>
- -----------------------------------------------------------------------------------------------------------------------------------
Net asset value,
 beginning of
 period..............    $11.70      $12.20      $10.40     $11.93     $11.34     $11.22    $10.40    $10.26     $9.85    $10.02
- -----------------------------------------------------------------------------------------------------------------------------------
Operations:
  Investment income
   -- net............       .91         .82         .88        .87        .87        .82       .81       .88       .87       .58
  Net realized and
   unrealized gains
   (losses) on
   investments.......       .26        (.40)        .92      (1.53)      1.03        .33       .87       .13       .40      (.17)
- -----------------------------------------------------------------------------------------------------------------------------------
Total from
 operations..........      1.17         .42        1.80       (.66)      1.90       1.15      1.68      1.01      1.27       .41
- -----------------------------------------------------------------------------------------------------------------------------------
Distribution to
 shareholders:
  From investment
   income -- net.....      (.89)       (.91)         --       (.87)      (.87)      (.81)     (.86)     (.87)     (.86)     (.58)
  From net realized
   gains.............        --          --          --         --       (.43)      (.21)       --        --        --        --
  Excess
   distributions of
   net realized
   gains.............        --        (.01)         --         --       (.01)      (.01)       --        --        --        --
- -----------------------------------------------------------------------------------------------------------------------------------
Total distributions
 to shareholders.....      (.89)       (.92)         --       (.87)     (1.31)     (1.03)     (.86)     (.87)     (.86)     (.58)
- -----------------------------------------------------------------------------------------------------------------------------------
Net asset value, end
 of period...........    $11.98      $11.70      $12.20     $10.40     $11.93     $11.34    $11.22    $10.40    $10.26     $9.85
- -----------------------------------------------------------------------------------------------------------------------------------
Total return(@)......     10.44%       4.15%      17.26%     (5.22)%    12.76%      7.08%    14.68%     8.87%    12.30%     3.90%
Net assets at end of
 period (000s
 omitted)............  $105,200    $105,831    $109,120    $98,314    $92,589    $28,490    $8,503    $4,945    $3,528    $2,579
Ratio of expenses to
 average daily net
 assets..............       .55%        .55%        .55%       .55%       .57%       .67%      .75%      .75%      .75%      .75%**
Ratio of net
 investment income to
 average daily net
 assets..............      7.11%       6.86%       7.78%      7.59%      7.15%      7.08%     7.42%     8.27%     8.65%     8.50%**
Portfolio turnover
 rate................       166%        171%        139%       142%       125%        83%       25%       35%       46%       45%
- -----------------------------------------------------------------------------------------------------------------------------------
<FN>
 *Period from May 2, 1988 to December 31, 1988.
</TABLE>
    
 
   
<TABLE>
<CAPTION>
                                                            YEAR ENDED
                                                           DECEMBER 31,
GLOBAL BOND SERIES                                  1997       1996      1995*
<S>                                               <C>        <C>        <C>
- --------------------------------------------------------------------------------
Net asset value, beginning of period............   $11.11     $11.30     $10.00
- --------------------------------------------------------------------------------
Operations:
  Investment income -- net......................      .46        .57        .54
  Net realized and unrealized gains (losses) on
   investments..................................     (.45)      (.13)      1.52
- --------------------------------------------------------------------------------
Total from operations...........................      .01        .44       2.06
- --------------------------------------------------------------------------------
Distribution to shareholders:
  From investment income -- net.................     (.37)      (.43)      (.54)
  From net realized gains.......................     (.10)      (.20)      (.22)
- --------------------------------------------------------------------------------
Total distribution to shareholders..............     (.47)      (.63)      (.76)
- --------------------------------------------------------------------------------
Net asset value, end of period..................   $10.65     $11.11     $11.30
- --------------------------------------------------------------------------------
Total return(@).................................      .14%      3.32%     19.14%
Net assets at end of period (000s omitted)......  $20,692    $20,228    $13,187
Ratio of expenses to average daily net assets...     1.10%      1.02%      1.28%**
Ratio of net investment income to average daily
 net assets.....................................     4.41%      5.07%      5.01%**
Portfolio turnover rate.........................      168%       129%       184%
- --------------------------------------------------------------------------------
<FN>
 *The Series commenced operations on January 3, 1995. The Series' inception  was
  December  14, 1994,  when it was  initially capitalized.  However, the Series'
  shares did not become effectively registered under the Securities Act of  1933
  until  January  3, 1995.  Information  is not  presented  for the  period from
  December 14, 1994,  through January 3,  1995, as the  Series' shares were  not
  registered during that period.
- ------------------------------
**Annualized
 @These  are the Series' total returns during the period, including reinvestment
  of all dividend and capital gains distributions.
</TABLE>
    
 
                                       3
<PAGE>
 
   
<TABLE>
<CAPTION>
                                                         YEAR ENDED DECEMBER 31,
HIGH YIELD SERIES                                1997       1996       1995       1994*
<S>                                            <C>        <C>        <C>        <C>
- ------------------------------------------------------------------------------------------
Net asset value, beginning of period.........    $9.83      $9.74      $9.47     $10.00
- ------------------------------------------------------------------------------------------
Operations:
  Investment income -- net...................      .96       1.04       1.15        .71
  Net realized and unrealized gains (losses)
   on investments............................       --        .13        .30       (.53)
- ------------------------------------------------------------------------------------------
Total from operations........................      .96       1.17       1.45        .18
- ------------------------------------------------------------------------------------------
Distribution to shareholders:
  From investment income -- net..............     (.02)     (1.03)     (1.14)      (.71)
  Excess distributions of net realized
   gains.....................................       --       (.05)      (.04)        --
- ------------------------------------------------------------------------------------------
Total distributions to shareholders..........     (.02)     (1.08)     (1.18)      (.71)
- ------------------------------------------------------------------------------------------
Net asset value, end of period...............   $10.77      $9.83      $9.74      $9.47
- ------------------------------------------------------------------------------------------
Total return(@)..............................     9.76%     10.52%     12.73%      (.75)%
Net assets at end of period (000s omitted)...  $59,228    $42,578    $28,129    $13,706
Ratio of expenses to average daily net
 assets......................................      .62%       .63%       .63%       .75%**
Ratio of net investment income to average
 daily net assets............................    10.31%     10.22%     11.30%     10.44%**
Portfolio turnover rate......................      353%       235%       130%        20%
- ------------------------------------------------------------------------------------------
<FN>
 *For the Period May 2, 1994 (commencement of operations) to December 31,  1994.
  The  Series' inception was April 26,  1994, when it was initially capitalized.
  However, the Series' shares  did not become  effectively registered under  the
  Securities Act of 1933 until May 2, 1994. Information is not presented for the
  period  from April 26, 1994,  through May 2, 1994,  as the Series' shares were
  not registered during that period.
</TABLE>
    
 
   
<TABLE>
<CAPTION>
                                                            YEAR ENDED
                                                           DECEMBER 31,
GLOBAL ASSET ALLOCATION SERIES                      1997       1996      1995*
<S>                                               <C>        <C>        <C>
- --------------------------------------------------------------------------------
Net asset value, beginning of period............   $12.34     $11.42     $10.00
- --------------------------------------------------------------------------------
Operations:
  Investment income -- net......................      .28        .36        .35
  Net realized and unrealized gains (losses) on
   investments..................................     1.39       1.19       1.55
- --------------------------------------------------------------------------------
Total from operations...........................     1.67       1.55       1.90
- --------------------------------------------------------------------------------
Distribution to shareholders:
  From investment income -- net.................     (.26)      (.38)      (.34)
  From net realized gains.......................     (.46)      (.25)      (.14)
- --------------------------------------------------------------------------------
Total distributions to shareholders.............     (.72)      (.63)      (.48)
- --------------------------------------------------------------------------------
Net asset value, end of period..................   $13.29     $12.34     $11.42
- --------------------------------------------------------------------------------
Total return(@).................................    13.51%     12.72%     17.47%
Net assets at end of period (000s omitted)......  $52,482    $37,307    $20,080
Ratio of expenses to average daily net assets...     1.16%      1.20%      1.28%**
Ratio of net investment income to average daily
 net assets.....................................     2.42%      3.01%      3.26%**
Portfolio turnover rate.........................       51%        46%        44%
Average commission rate paid***.................  $ .0360    $ .0412        N/A
- --------------------------------------------------------------------------------
<FN>
  *The Series commenced operations on January 3, 1995. The Series' inception was
   December 14, 1994, when  it was initially  capitalized. However, the  Series'
   shares did not become effectively registered under the Securities Act of 1933
   until  January  3, 1995.  Information is  not presented  for the  period from
   December 14, 1994, through  January 3, 1995, as  the Series' shares were  not
   registered during that period.
</TABLE>
    
 
   
<TABLE>
<CAPTION>
                                                                     YEAR ENDED DECEMBER 31,
ASSET ALLOCATION SERIES         1997       1996       1995       1994       1993       1992      1991      1990     1989     1988
<S>                           <C>        <C>        <C>        <C>        <C>        <C>       <C>       <C>       <C>      <C>
- -----------------------------------------------------------------------------------------------------------------------------------
Net asset value, beginning of
 period......................   $16.99     $15.90     $13.56     $14.14     $13.28    $12.81    $10.37    $10.59    $8.86    $9.11
- -----------------------------------------------------------------------------------------------------------------------------------
Operations:
  Investment income -- net...      .59        .61        .65        .56        .52       .62       .59       .57      .49      .52
  Net realized and unrealized
   gains (losses) on
   investments...............     2.82       1.38       2.35       (.58)       .92       .47      2.43      (.20)    1.73     (.24)
- -----------------------------------------------------------------------------------------------------------------------------------
Total from operations........     3.41       1.99       3.00       (.02)      1.44      1.09      3.02       .37     2.22      .28
- -----------------------------------------------------------------------------------------------------------------------------------
Distribution to shareholders:
  From investment income --
   net.......................     (.59)      (.61)      (.64)      (.56)      (.52)     (.62)     (.58)     (.59)    (.49)    (.53)
  From net realized gains....    (2.19)      (.28)      (.02)        --       (.06)       --        --        --       --       --
  Excess distributions of net
   realized gains............       --       (.01)        --         --         --        --        --        --       --       --
- -----------------------------------------------------------------------------------------------------------------------------------
Total distributions to
 shareholders................    (2.78)      (.90)      (.66)     (.56)       (.58)     (.62)     (.58)     (.59)    (.49)    (.53)
- -----------------------------------------------------------------------------------------------------------------------------------
Net asset of value, end of
 period......................   $17.62     $16.99     $15.90     $13.56     $14.14    $13.28    $12.81    $10.37   $10.59    $8.86
- -----------------------------------------------------------------------------------------------------------------------------------
Total return(@)..............    20.24%     12.50%     21.97%      (.31)%     9.79%     6.95%    27.65%     2.01%   23.75%    3.71%
Net assets at end of period
 (000s omitted).............. $482,280   $397,712   $341,511   $260,593   $204,603   $89,076   $31,821   $13,153   $5,531   $2,485
Ratio of expenses to average
 daily net assets............      .53%       .54%       .55%       .56%       .56%      .60%      .70%      .85%     .75%     .75%
Ratio of net investment
 income to average daily net
 assets......................     3.16%      3.66%      4.25%      4.05%      3.72%     4.78%     5.04%     5.40%    5.35%    5.82%
Portfolio turnover rate......      113%       115%        98%        73%        74%       54%       42%       75%      47%      79%
Average commission rate
 paid***..................... $  .0677   $  .0748        N/A        N/A        N/A       N/A       N/A       N/A      N/A      N/A
- -----------------------------------------------------------------------------------------------------------------------------------
<FN>
- ------------------------------
 **Annualized
***In  accordance with rules adopted by  the Securities and Exchange Commission,
   disclosure of average commission rate paid is required beginning with  fiscal
   year   1996.  The  amount  represents  total  brokerage  commission  paid  on
   applicable purchases and sales of securities  for the period, divided by  the
   total  number  of related  shares purchased  and sold.  For the  Global Asset
   Allocation Series, the comparability of  this information may be affected  by
   the  fact that  commission rates per  share vary  significantly among foreign
   countries.
 @These are the Series' total returns during the period, including  reinvestment
  of all dividend and capital gains distributions.
</TABLE>
    
 
                                       4
<PAGE>
 
   
<TABLE>
<CAPTION>
                                                        YEAR ENDED
                                                       DECEMBER 31,
VALUE SERIES                                          1997      1996*
<S>                                                 <C>        <C>
- -----------------------------------------------------------------------
Net asset value, beginning of period..............   $11.38     $10.27
- -----------------------------------------------------------------------
Operations:
  Investment income -- net........................      .12        .14
  Net realized and unrealized gain (loss) on
   investments....................................     2.75       1.10
- -----------------------------------------------------------------------
Total from operations.............................     2.87       1.24
- -----------------------------------------------------------------------
Distributions to shareholders:
  From investment income -- net...................     (.13)      (.13)
  From net realized gains.........................     (.70)        --
- -----------------------------------------------------------------------
Total distributions to shareholders...............     (.83)      (.13)
- -----------------------------------------------------------------------
Net asset value, end of period....................   $13.42     $11.38
- -----------------------------------------------------------------------
Total return(@)...................................    25.24%     11.49%
Net assets at end of period (000s omitted)........  $55,058    $13,951
Ratio of expenses to average daily net assets.....      .83%       .87%**
Ratio of net investment income to average daily
 net assets.......................................     1.41%      1.72%**
Portfolio turnover rate...........................      121%        36%
Average commission rate paid***...................  $ .0606    $ .0556
- -----------------------------------------------------------------------
<FN>
 *For  the period May 1, 1996 (commencement of operations) to December 31, 1996.
  The Series' inception was  March 28, 1996 when  it was initially  capitalized.
  However,  the Series' shares  did not become  effectively registered under the
  Securities Act of 1933 until May 1, 1996. Information is not presented for the
  period from March 28, 1996 through May 1, 1996, as the Series' shares were not
  registered during that period.
</TABLE>
    
 
   
<TABLE>
<CAPTION>
                                                         YEAR ENDED DECEMBER 31,
GROWTH & INCOME SERIES                          1997        1996        1995       1994*
<S>                                           <C>         <C>         <C>        <C>
- -------------------------------------------------------------------------------------------
Net asset value, beginning of period........    $15.16      $12.83     $10.07     $10.00
- -------------------------------------------------------------------------------------------
Operations:
  Investment income -- net..................       .40         .34        .33        .21
  Net realized and unrealized gains (losses)
   on investments...........................      3.80        2.54       2.76        .07
- -------------------------------------------------------------------------------------------
Total from operations.......................      4.20        2.88       3.09        .28
- -------------------------------------------------------------------------------------------
Distribution to shareholders:
  From investment income -- net.............      (.39)       (.34)      (.33)      (.21)
  From net realized gains...................      (.21)       (.21)        --         --
- -------------------------------------------------------------------------------------------
Total distributions to shareholders.........      (.60)       (.55)      (.33)      (.21)
- -------------------------------------------------------------------------------------------
Net asset of value, end of period...........    $18.76      $15.16     $12.83     $10.07
- -------------------------------------------------------------------------------------------
Total return(@).............................     27.69%      21.51%     29.70%      1.74%
Net assets at end of period (000s
 omitted)...................................  $244,970    $134,932    $59,533    $16,276
Ratio of expenses to average daily net
 assets.....................................       .70%        .76%       .80%       .86%**
Ratio of net investment income to average
 daily net assets...........................      2.63%       2.38%      2.86%      3.12%**
Portfolio turnover rate.....................        11%         20%        17%         2%
Average commission rate paid***.............  $  .0710    $  .0688        N/A        N/A
- -------------------------------------------------------------------------------------------
<FN>
 *For the period May 2, 1994 (commencement of operations) to December 31,  1994.
  The  Series' inception was April 26,  1994, when it was initially capitalized.
  However, the Series' shares  did not become  effectively registered under  the
  Securities Act of 1933 until May 2, 1994. Information is not presented for the
  period  from April 26, 1994,  through May 2, 1994,  as the Series' shares were
  not registered during that period.
</TABLE>
    
 
   
<TABLE>
<CAPTION>
                                                        YEAR ENDED
                                                       DECEMBER 31,
S&P 500 INDEX SERIES                                  1997      1996*
<S>                                                 <C>        <C>
- -----------------------------------------------------------------------
Net asset value, beginning of period..............   $11.47     $10.09
- -----------------------------------------------------------------------
Operations:
  Investment income -- net........................      .12        .10
  Net realized and unrealized gain (loss) on
   investments....................................     3.58       1.37
- -----------------------------------------------------------------------
Total from operations.............................     3.70       1.47
- -----------------------------------------------------------------------
Distributions to shareholders:
  From investment income -- net...................     (.12)      (.09)
  From net realized gains.........................     (.12)        --
- -----------------------------------------------------------------------
Total distributions to shareholders...............     (.24)      (.09)
- -----------------------------------------------------------------------
Net asset value, end of period....................   $14.93     $11.47
- -----------------------------------------------------------------------
Total return(@)...................................    32.32%     14.29%
Net assets at end of period (000s omitted)........  $109,572   $21,979
Ratio of expenses to average daily net assets.....      .51%       .79%**
Ratio of net investment income to average daily
 net assets.......................................     1.41%      1.47%**
Portfolio turnover rate...........................        5%         6%
Average commission rate paid***...................  $ .0458    $ .0477
- -----------------------------------------------------------------------
<FN>
  *For the period May 1, 1996 (commencement of operations) to December 31, 1996.
   The Series' inception was March 28,  1996 when it was initially  capitalized.
   However,  the Series' shares did not  become effectively registered under the
   Securities Act of 1933  until May 1, 1996.  Information is not presented  for
   the  period from March  28, 1996 through  May 1, 1996,  as the Series' shares
   were not registered during the period.
- ------------------------------
 **Annualized
***In accordance with rules adopted  by the Securities and Exchange  Commission,
   disclosure  of average commission rate paid is required beginning with fiscal
   year  1996.  The  amount  represents  total  brokerage  commission  paid   on
   applicable purchases and sales for the period, divided by the total number of
   related shares purchased and sold.
 @These  are the Series total returns  during the period, including reinvestment
  of all dividend and capital gains distributions.
</TABLE>
    
 
                                       5
<PAGE>
 
   
<TABLE>
<CAPTION>
                                                        YEAR ENDED
                                                       DECEMBER 31,
BLUE CHIP STOCK SERIES                                1997      1996*
<S>                                                 <C>        <C>
- -----------------------------------------------------------------------
Net asset value, beginning of period..............   $11.67     $10.07
- -----------------------------------------------------------------------
Operations:
  Investment income -- net........................      .07        .07
  Net realized and unrealized gain (loss) on
   investments....................................     3.08       1.60
- -----------------------------------------------------------------------
Total from operations.............................     3.15       1.67
- -----------------------------------------------------------------------
Distributions to shareholders:
  From investment income -- net...................     (.06)      (.07)
- -----------------------------------------------------------------------
Net asset value, end of period....................   $14.76     $11.67
- -----------------------------------------------------------------------
Total return(@)...................................    27.00%     16.24%
Net assets at end of period (000s omitted)........  $78,729    $17,606
Ratio of expenses to average daily net assets.....     1.02%      1.13%**
Ratio of net investment income to average daily
 net assets.......................................      .75%       .82%**
Portfolio turnover rate...........................       24%        17%
Average commission rate paid***...................  $ .0346    $ .0329
- -----------------------------------------------------------------------
<FN>
 *For the period May 1, 1996 (commencement of operations) to December 1996.  The
  Series'  inception  was March  28, 1996,  when  it was  initially capitalized.
  However, the Series' shares  did not become  effectively registered under  the
  Securities Act of 1933 until May 1, 1996. Information is not presented for the
  period  from March 28, 1996,  through May 1, 1996,  as the Series' shares were
  not registered during the period.
</TABLE>
    
 
   
<TABLE>
<CAPTION>
                                                            YEAR ENDED
                                                           DECEMBER 31,
INTERNATIONAL STOCK SERIES                          1997       1996      1995*
<S>                                               <C>        <C>        <C>
- --------------------------------------------------------------------------------
Net asset value, beginning of period............   $12.44     $11.27     $10.00
- --------------------------------------------------------------------------------
Operations:
  Investment income -- net......................      .13        .20        .14
  Net realized and unrealized gains (losses) on
   investments..................................     1.35       1.48       1.38
- --------------------------------------------------------------------------------
Total from operations...........................     1.48       1.68       1.52
- --------------------------------------------------------------------------------
Distribution to shareholders:
  From investment income -- net.................     (.15)      (.21)      (.09)
  From net realized gains.......................     (.41)      (.30)      (.16)
- --------------------------------------------------------------------------------
Total distributions to shareholders.............     (.56)      (.51)      (.25)
- --------------------------------------------------------------------------------
Net asset value, end of period..................   $13.36     $12.44     $11.27
- --------------------------------------------------------------------------------
Total return(@).................................    11.99%     14.02%     14.35%
Net assets at end of period (000s omitted)......  $79,142    $52,331    $21,327
Ratio of expenses to average daily net assets...     1.08%      1.15%      1.14%**
Ratio of net investment income to average daily
 net assets.....................................     1.10%      1.71%      1.41%**
Portfolio turnover rate.........................       30%        27%        39%
Average commission rate paid***.................  $ .0256    $ .0363        N/A
- --------------------------------------------------------------------------------
<FN>
 *The Series commenced operations on January 3, 1995. The Series' inception  was
  December  14, 1994,  when it was  initially capitalized.  However, the Series'
  shares did not become effectively registered under the Securities Act of  1933
  until  January  3, 1995.  Information  is not  presented  for the  period from
  December 14, 1994,  through January 3,  1995, as the  Series' shares were  not
  registered during that period.
</TABLE>
    
 
   
<TABLE>
<CAPTION>
                                                                           YEAR ENDED DECEMBER 31,
GLOBAL GROWTH SERIES                                  1997        1996        1995        1994        1993       1992*
<S>                                                 <C>         <C>         <C>         <C>         <C>        <C>
- -------------------------------------------------------------------------------------------------------------------------
Net asset value, beginning of period..............    $19.00      $15.97      $12.31      $12.77     $10.86      $9.82
- -------------------------------------------------------------------------------------------------------------------------
Operations:
  Investment income -- net........................       .02         .03         .09         .10        .06        .05
  Net realized and unrealized gains (losses) on
   investments....................................      1.27        3.03        3.66        (.46)      1.91       1.04
- -------------------------------------------------------------------------------------------------------------------------
Total from operations.............................      1.29        3.06        3.75        (.36)      1.97       1.09
- -------------------------------------------------------------------------------------------------------------------------
Distribution to shareholders:
  From investment income -- net...................        --        (.03)       (.09)       (.10)      (.06)      (.05)
- -------------------------------------------------------------------------------------------------------------------------
Net asset value, end of period....................    $20.29      $19.00      $15.97      $12.31     $12.77     $10.86
- -------------------------------------------------------------------------------------------------------------------------
Total return(@)...................................      6.82%      19.10%      30.49%      (2.98)%    17.92%     10.88%
Net assets at end of period (000s omitted)........  $353,255    $319,831    $207,913    $144,647    $75,882    $11,091
Ratio of expenses to average daily net assets.....       .79%        .79%        .80%        .81%      1.02%      1.22%**
Ratio of net investment income to average daily
 net assets.......................................       .12%        .15%        .64%        .82%       .53%       .73%**
Portfolio turnover rate...........................        35%         14%         29%         20%        19%        21%
Average commission rate paid***...................  $  .0260    $  .0295         N/A         N/A        N/A        N/A
- -------------------------------------------------------------------------------------------------------------------------
<FN>
  *For the period May 1, 1992 (commencement of operations) to December 31, 1992.
   The  Series' inception was April 13, 1992, when it was initially capitalized.
   However, the Series' shares did  not become effectively registered under  the
   Securities  Act of 1933 until  May 1, 1992. Information  is not presented for
   the period from April 13,  1992, through May 1,  1992, as the Series'  shares
   were not registered during that period.
- ------------------------------
 **Annualized.
***In  accordance with rules adopted by  the Securities and Exchange Commission,
   disclosure of average commission rate paid is required beginning with  fiscal
   year   1996.  The  amount  represents  total  brokerage  commission  paid  on
   applicable purchases and sales of securities  for the period, divided by  the
   total  number of  related shares  purchased and  sold. For  Global Growth the
   comparability of this information may be affected by the fact that commission
   rates per share vary significantly among foreign countries.
 @These are the Series' total returns during the period, including  reinvestment
  of all dividend and capital gains distributions.
</TABLE>
    
 
                                       6
<PAGE>
 
   
<TABLE>
<CAPTION>
                                                                     YEAR ENDED DECEMBER 31,
GROWTH STOCK SERIES             1997       1996       1995       1994       1993       1992       1991     1990     1989     1988
<S>                           <C>        <C>        <C>        <C>        <C>        <C>        <C>       <C>      <C>      <C>
- -----------------------------------------------------------------------------------------------------------------------------------
Net asset value, beginning of
 period......................   $32.59     $28.09     $22.11     $22.92     $21.15     $20.68    $13.57   $14.26   $10.59   $10.42
- -----------------------------------------------------------------------------------------------------------------------------------
Operations:
  Investment income -- net...      .12        .12        .13        .18        .09        .18       .22      .38      .26      .29
  Net realized and unrealized
   gains (losses) on
   investments...............     3.93       4.50       5.98       (.81)      1.77        .47      7.11     (.69)    3.67      .16
- -----------------------------------------------------------------------------------------------------------------------------------
Total from operations........     4.05       4.62       6.11       (.63)      1.86        .65      7.33     (.31)    3.93      .45
- -----------------------------------------------------------------------------------------------------------------------------------
Distribution to shareholders:
  From investment income --
   net.......................       --       (.12)      (.13)      (.18)      (.09)      (.18)     (.22)    (.38)    (.26)    (.28)
- -----------------------------------------------------------------------------------------------------------------------------------
Net asset value, end of
 period......................   $36.64     $32.59     $28.09     $22.11     $22.92     $21.15    $20.68   $13.57   $14.26   $10.59
- -----------------------------------------------------------------------------------------------------------------------------------
Total return(@)..............    12.42%     16.41%     27.66%     (2.82)%     8.78%      2.94%    53.50%   (3.10)%  36.46%    4.49%
Net assets at end of period
 (000s omitted).............. $707,155   $661,217   $530,945   $377,483   $304,293   $188,172   $100,690  $25,623  $8,632   $3,023
Ratio of expenses to average
 daily net assets............      .66%       .67%       .67%       .68%       .69%       .76%      .81%    1.01%    1.00%    1.00%
Ratio of net investment
 income to average daily net
 assets......................      .33%       .39%       .51%       .81%       .46%       .92%     1.28%    2.72%    2.03%    2.76%
Portfolio turnover rate......       19%        30%        20%        19%        26%        24%       31%      50%      40%      85%
Average commission rate
 paid***..................... $  .0659   $  .0728        N/A        N/A        N/A        N/A       N/A      N/A      N/A      N/A
- -----------------------------------------------------------------------------------------------------------------------------------
<FN>
</TABLE>
    
 
   
<TABLE>
<CAPTION>
                                                                YEAR ENDED DECEMBER 31,
AGGRESSIVE GROWTH SERIES                          1997         1996         1995            1994*
<S>                                            <C>          <C>          <C>          <C>
- --------------------------------------------------------------------------------------------------------
Net asset value, beginning of period.........    $13.62       $12.68        $9.80         $10.03
- --------------------------------------------------------------------------------------------------------
Operations:
  Investment income -- net...................       .03          .03          .07            .08
  Net realized and unrealized gains (losses)
   on investments............................       .16          .94         2.88           (.23)
- --------------------------------------------------------------------------------------------------------
Total from operations........................       .19          .97         2.95           (.15)
- --------------------------------------------------------------------------------------------------------
Distribution to shareholders:
  From investment income -- net..............        --         (.03)        (.07)          (.08)
- --------------------------------------------------------------------------------------------------------
Net asset value, end of period...............    $13.81       $13.62       $12.68          $9.80
- --------------------------------------------------------------------------------------------------------
Total return(@)..............................      1.43%        7.64%       29.89%         (1.89)%
Net assets at end of period (000s omitted)...  $122,455     $ 96,931     $ 46,943     $   13,526
Ratio of expenses to average daily net
 assets......................................       .76%         .78%         .81%           .88%**
Ratio of net investment income to average
 daily net assets............................       .24%         .22%         .58%          1.24%**
Portfolio turnover rate......................        25%          22%          21%             5%
Average commission rate paid***..............  $  .0616     $  .0692          N/A            N/A
- --------------------------------------------------------------------------------------------------------
<FN>
  *For the period May 2, 1994 (commencement of operations) to December 31, 1994.
   The  Series' inception was April 26, 1994, when it was initially capitalized.
   However, the Series' shares did  not become effectively registered under  the
   Securities  Act of 1933 until  May 2, 1994. Information  is not presented for
   the period from April 26,  1994, through May 2,  1994, as the Series'  shares
   were not registered during that period.
- ------------------------------
 **Annualized.
***In  accordance with rules adopted by  the Securities and Exchange Commission,
   disclosure of average commission rate paid is required beginning with  fiscal
   year   1996.  The  amount  represents  total  brokerage  commission  paid  on
   applicable purchases and sales of securities  for the period, divided by  the
   total  number of related  shares purchased and  sold. For International Stock
   Series, the comparability  of this information  may be affected  by the  fact
   that commission rates per share vary significantly among foreign countries.
 @These  are the Series' total returns during the period, including reinvestment
  of all dividend and capital gains distributions.
</TABLE>
    
 
   
PERFORMANCE INFORMATION
    
 
   
The Series may  advertise their  "cumulative total return"  and "average  annual
total  return" and may  compare such figures to  recognized indices. Some Series
may advertise their "yield"  and Money Market Series  may advertise its  "yield"
and  "effective  yield."  Any advertisement  of  a Series'  performance  will be
accompanied by performance of the  Separate Account being advertised. (See  "The
Separate Accounts and the Contracts.") All yield and total return quotations are
based  upon  historical  earnings  and  are  not  intended  to  indicate  future
performance. The return on and principal value of an investment in a Series will
fluctuate, so that when redeemed the investment  may be worth more or less  than
its original cost.
    
 
   
Yield   calculations  will  be  based  upon   a  30-day  period  stated  in  the
advertisement and will be calculated by  dividing the net investment income  per
share   (as  defined  under   Securities  and  Exchange   Commission  rules  and
regulations) earned during the advertised period by the offering price per share
on the last  day of the  period. The result  will then be  "annualized" using  a
formula that provides for semi-annual compounding of income.
    
 
   
Average annual total return is the average annual compounded rate of return on a
hypothetical  $1,000 investment made at the  beginning of the advertised period.
Cumulative total  return  is calculated  by  subtracting a  hypothetical  $1,000
payment  from the redeemable value of such  payment at the end of the advertised
period, dividing such difference by $1,000 and multiplying the quotient by  100.
In  calculating average  annual and cumulative  total return,  all dividends and
distributions are assumed to be reinvested.
    
 
   
Comparative performance  information also  may  be used  from  time to  time  in
advertising.  Advertisements  may compare  the  Series' performance  to  that of
various unmanaged market indices,  or may include  performance data compiled  by
outside    organizations   such    as   Lipper    Analytical   Services,   Inc.,
CDA/Wiesenberger, other entities  or organizations or  publications which  track
the performance of investment companies.
    
 
   
For additional information regarding comparative performance information and the
calculation  of yield, average annual total  return and cumulative total return,
see "Performance" in the Statement of Additional Information.
    
 
                                       7
<PAGE>
ORGANIZATION AND CLASSIFICATION
 
   
Fortis Series was incorporated  under Minnesota law in  1986, and is  registered
with  the Securities and Exchange Commission under the Investment Company Act of
1940 (the "1940  Act") as  an "open-end management  investment company."  Fortis
Series  currently consists  of eighteen  separate investment  portfolios (each a
"Series") as set forth on the cover page of this Prospectus. Each Series is, for
investment purposes, a separate  investment fund. A  separate series of  capital
stock is issued for each Series. Each share of capital stock issued with respect
to  a Series has  a pro-rata interest  in the assets  of that Series  and has no
interest in  the  assets  of  any  other  Series.  Each  Series  bears  its  own
liabilities  and  also its  proportionate share  of  the general  liabilities of
Fortis Series.
    
 
INVESTMENT OBJECTIVES AND POLICIES; RISK CONSIDERATIONS
 
Each Series  has  different  investment  objectives  which  it  pursues  through
different  investment policies as described  below. The investment objectives of
the Series and, except as otherwise noted, the policies by which the Series seek
to achieve their investment objectives, may  be changed without the approval  of
shareholders.  While no such change is  contemplated, such a change could result
in a Series' objectives differing from  those deemed appropriate by an  investor
at the time of investment.
 
   
Through  careful  selection,  broad  diversification  and  constant supervision,
Fortis Series' management  aims to limit  and counteract various  types of  risk
that are inherent in all securities and advance the value of the Series' assets.
There  is  risk in  all investments  and fulfillment  of the  Series' objectives
cannot be assured.  These risks  are discussed below  under sections  describing
each  Series,  as well  as under  the  section "General  Risks to  Consider." In
addition, no Series is intended to  be a complete investment program,  therefore
it may serve to diversify an investor's portfolio.
    
 
   
Fortis Advisers, Inc. ("Advisers") is the investment adviser for each Series. As
noted  below, Advisers has retained a sub-adviser for eight Series. In selecting
equity securities for the domestic equity Series for which Advisers does not use
a sub-adviser,  Advisers  uses  two  distinct  equity  investment  philosophies.
Specifically, Asset Allocation Series, Growth Stock Series and Aggressive Growth
Series  use a  "growth" philosophy and  Value Series uses  a "value" philosophy.
Growth & Income Series may at times use either or both philosophies. Under  both
philosophies,  Advisers  uses  a "bottom  up"  investment style  in  which stock
selection is driven primarily by the merits of the company itself.
    
 
In managing "growth" portfolios, Advisers invests  based on a concept of  growth
potential,  seeking  to identify  companies  whose earnings  and  revenue growth
potential exceed  industry averages.  In addition  to superior  earnings  growth
potential,  Advisers seeks companies  which it believes to  be well managed with
above average returns on equity and invested capital, healthy balance sheets and
the potential to  gain market  share. Companies  of this  nature typically  have
above  average  growth  potential  and  a  correspondingly  higher  than average
valuation level as measured by price to  earnings, price to cash flow and  price
to book value ratios.
 
In  managing  "value"  portfolios,  Advisers  invests  based  on  a  concept  of
fundamental value, seeking to identify companies whose shares appear inexpensive
relative to  anticipated profit  and dividend  growth. The  primary emphasis  is
placed  on  companies  expected  to  experience  a  significant  acceleration in
earnings over the next three to five years. The prices of these stocks typically
do not reflect such improvement. Often a stock is "out of favor" and priced  low
relative to the company's earnings, cash flow and book value. A second source of
"value"  stocks are companies expected to  sustain their historic rate of growth
but which are  selling at  a low  price to earnings  ratio in  relation to  this
anticipated growth.
 
   
Any  investment restriction or limitation which involves a maximum percentage of
securities or assets, except a Series' borrowing policy and policy with  respect
to  investing in  illiquid securities,  shall not  be considered  to be exceeded
unless an excess over the percentage occurs immediately after an acquisition  of
securities or utilization of assets and such excess results therefrom.
    
 
   
After purchase by any Series, a security may cease to be rated or its rating may
be reduced below the minimum required for purchase by such Series. Neither event
will  require a sale of such security by a Series. To the extent the ratings may
change as a result of changes in the rating organizations or the rating systems,
each Series will attempt to use comparable ratings as standards for  investments
in  accordance with the investment policies  contained in this Prospectus and in
the Statement  of  Additional Information.  The  ratings of  Standard  &  Poor's
Ratings  Services  and  Moody's Investors  Service,  Inc. are  described  in the
Appendix attached hereto.
    
 
   
The insurance laws  and regulations of  various states as  well as the  Internal
Revenue  Code of 1986 and  regulations thereunder may from  time to time, impose
additional restrictions on the investments of the various Series.
    
 
MONEY MARKET SERIES
 
The objectives of Money Market Series  are high levels of capital stability  and
liquidity  and, to the  extent consistent with these  primary objectives, a high
level of current income. Money Market Series intends to achieve these objectives
through investment in a diversified portfolio of commercial paper and other debt
securities.
 
   
Money Market Series is somewhat different from a traditional money market mutual
fund in that  it does not  attempt to maintain  its net asset  value at any  set
price.  It  has a  nonfundamental investment  policy requiring  that all  of its
assets be invested  in debt  securities maturing in  13 months  or less,  except
United  States Government Securities as defined in the 1940 Act, whose portfolio
maturities cannot be  more than 25  months from the  date of acquisition.  Money
Market  Series will maintain a dollar  weighted average portfolio maturity of 90
days or less.
    
 
   
Pursuant to Rule 2a-7 under  the 1940 Act, Money  Market Series will not  invest
more  than 5% of  its total assets in:  (1) securities of  any one issuer (other
than cash or United  States Government Securities as  defined in the 1940  Act),
except that the Series may at any one time make a single investment of more than
5%  of its assets in securities of an  issuer in the highest rating category for
up to three business  days (subject to the  diversification requirements of  the
1940  Act,  as set  forth under  "Investment  Policies, Restrictions,  and Risks
Applicable to More  Than One  Series"); or (2)  securities rated  in the  second
highest  rating  category--  with  investments in  the  second  highest category
further limited with respect to  any particular issuer to  the greater of 1%  of
total  assets or  $1,000,000. Certain  of the provisions  of Rule  2a-7 are more
restrictive than  Money  Market  Series' investment  policies  and  restrictions
described  below; Money Market  Series' investments will be  limited to the more
restrictive provisions of Rule 2a-7.
    
 
Money Market  Series pursues  its  objectives by  investing exclusively  in  the
following:
 
    1.  Obligations of domestic issuers  (which include, for example, commercial
paper and other debt obligations) which meet the quality and other standards  of
Rule 2a-7 (or successors thereto) under the 1940 Act.
 
                                       8
<PAGE>
   
    2.  Securities  of,  or guaranteed  by,  the United  States  Government, its
agencies or instrumentalities. For a discussion of this type of security and the
federal income  tax diversification  requirements applicable  to investments  in
this type of security, see "U.S. Government Securities Series" below.
    
 
    3. Securities (payable in U.S. dollars) of, or guaranteed by, the government
of  Canada  or  a  province  of  Canada  or  any  instrumentality  or  political
subdivision thereof, such securities not to  exceed 25% of Money Market  Series'
total assets, and securities of foreign companies (which do not include domestic
branches  of  foreign  banks  and  foreign  branches  of  domestic  banks), such
securities not  to  exceed  15%  of  Money  Market  Series'  total  assets.  See
"Investment  Policies,  Restrictions,  and  Risks Applicable  to  More  Than One
Series--Investment in  Foreign Securities"  for a  discussion of  certain  risks
connected with investing in foreign securities.
 
    4.  Obligations of:  (a) domestic  or foreign  banks having  total assets in
excess of one billion dollars or of any branches of such banks, whether domestic
or foreign; or (b) in other foreign issuers; provided, that no more than 49%  of
Money  Market Series' total  assets may be  so invested in  all such securities.
Such obligations of domestic and foreign banks may include, but are not  limited
to,  certificates of deposit,  letters of credit,  and bankers' acceptances. For
this purpose, "bank" includes  commercial banks, savings  banks and savings  and
loan  associations.  Overall,  with respect  to  investments set  forth  in this
paragraph and in  paragraph 3, above,  Money Market Series  may not invest  more
than 49% of the value of its total assets collectively in: (i) securities of, or
guaranteed  by,  the  government  of  Canada,  a  province  of  Canada,  or  any
instrumentality or  political subdivision  thereof; (ii)  securities of  foreign
companies;  and  (iii)  securities of  domestic  branches of  foreign  banks and
foreign branches of domestic banks.
 
There are risks associated with  investments in obligations of foreign  branches
of  domestic banks and domestic branches of  foreign banks that do not accompany
investments in  obligations  of domestic  banks  generally. Domestic  banks  are
required  to maintain specified  levels of reserves, are  limited in the amounts
they can  loan  to a  single  borrower, and  are  subject to  other  regulations
designed  to promote financial  soundness. Not all of  such laws and regulations
apply to foreign  branches of domestic  banks. Money Market  Series may also  be
subject  to additional  investment risks  from investing  in the  obligations of
foreign branches  of domestic  banks. Such  risks include  future political  and
economic  developments, the possible imposition  of foreign withholding taxes on
interest income payable on securities,  the possible seizure or  nationalization
of  foreign deposits,  the possible establishment  of exchange  controls, or the
adoption of other foreign governmental restrictions which might adversely affect
the payment of principal  and interest on such  obligations. The obligations  of
domestic branches of foreign banks may also be subject to other risks, including
political and economic developments in the country in which the foreign bank has
its  main  office. There  may  be less  publicly  available information  about a
domestic branch  of a  foreign bank  than about  a domestic  bank. In  addition,
obligations  of  foreign branches  of domestic  banks  and domestic  branches of
foreign banks are not insured by the Federal Deposit Insurance Corporation.
 
    5. Extendible notes  that provide for  an optional maturity  date, at  Money
Market  Series'  option, of  13 months  or  less from  the date  of acquisition.
Extendible notes issued with maturity dates in excess of 13 months from the date
of issuance that provide for optional maturity dates, at the holder's option, of
13 months or less  shall be deemed  by Money Market Series  to have been  issued
with  the shorter optional  maturity dates. Such extendible  notes must meet the
quality and other  standards of Rule  2a-7 (or successors  thereto) and may  not
account for greater than 25% of the total assets of Money Market Series.
 
    6.  Repurchase agreements in connection  with obligations which are suitable
for investment under the categories set forth above.
 
    7.  Obligations  other  than  those  listed  above  if  the  obligation   is
accompanied  by  a  guarantee  of  principal  and  interest,  provided  that the
guarantee is that  of a  bank or corporation  whose certificates  of deposit  or
commercial paper may otherwise be purchased by Money Market Series.
 
U.S. GOVERNMENT SECURITIES SERIES
 
The  investment objective  of U.S. Government  Securities Series  is to maximize
total return (from income and market value change), while providing shareholders
with a high level of current income consistent with prudent investment risk.
 
In pursuing its  objective, U.S.  Government Securities Series'  assets will  be
invested in the following manner:
 
   
At  least 65% of the Series' total assets will be invested in securities issued,
guaranteed, insured,  or collateralized  by the  United States  government,  its
agencies,  or instrumentalities  (whether or not  backed by the  "full faith and
credit" pledge of the  United States government),  and in repurchase  agreements
pertaining  to such securities. Securities issued  or guaranteed as to principal
and interest by the  United States government include  a variety of  securities,
which  differ in  their interest rates,  maturities, and dates  of issuance, and
include U.S.  Treasury inflation-adjusted  protection securities.  The value  of
such  inflation-protection  securities is  adjusted  for inflation  and periodic
interest payments are in  amounts equal to a  fixed percentage of the  inflation
adjusted value of the principal.
    
 
   
In  addition  to Treasury  obligations,  U.S. Government  Securities  Series may
invest in the following:  (1) obligations of  United States government  agencies
and  instrumentalities which  are secured  by the full  faith and  credit of the
United  States  Treasury,  such  as  Government  National  Mortgage  Association
pass-through certificates; (2) obligations which are secured by the right of the
issuer  to borrow from  the Treasury, such  as securities issued  by the Federal
Financing Bank or the  United States Postal Service;  and (3) obligations  which
are  supported by the credit of the government agency or instrumentality itself,
such as  securities  of the  Federal  Home Loan  Bank  or the  Federal  National
Mortgage   Association.  U.S.  Government  Securities   Series  will  invest  in
securities which are  not backed  by the  full faith  and credit  of the  United
States Treasury only when the credit risk with respect to the instrumentality or
agency  issuing such securities does not make the securities, in the judgment of
Advisers, unsuitable investments for the Series.
    
 
   
There is no percentage limitation on U.S. Government Securities Series' purchase
of mortgage-related securities issued, guaranteed, insured, or collateralized by
the United States  government, its  agencies, or  instrumentalities, except  for
limitations  that may be imposed from time to time by the Internal Revenue Code.
The Series may also invest in mortgage-related securities issued and insured  by
private organizations if such securities fall within the investment restrictions
for   marketable   straight  debt   securities   set  forth   below.   Types  of
mortgage-related  securities   include   "pass-through"   securities,   modified
pass-through securities, participation certificates, and collateralized mortgage
obligations.
    
 
   
Up to 35% of U.S. Government Securities Series' total assets may consist of:
    
 
   (1) Marketable non-convertible debt securities which are rated at the time of
purchase  within the three highest grades  assigned by Moody's Investors Service
("Moody's") (Aaa, Aa or A) or  Standard & Poor's Ratings Services ("S&P")  (AAA,
AA  or A), or  comparably rated by another  nationally recognized rating agency;
see the Appendix to this Prospectus for a discussion of S&P and Moody's ratings;
 
                                       9
<PAGE>
   (2) Marketable securities (payable in U.S. dollars) of, or guaranteed by, the
government of Canada or a province of Canada or any instrumentality or political
subdivision thereof (such securities  not to exceed 25%  of the U.S.  Government
Securities Series' total assets);
 
   (3) Obligations of, or guaranteed by, U.S. banks, which obligations, although
not  rated as  a matter of  policy by either  Moody's or S&P,  are considered by
Advisers to  have  investment quality  comparable  to securities  which  may  be
purchased  under item (1) above  (such securities not to  exceed 25% of the U.S.
Government Securities Series' total assets);
 
   (4) Commercial paper obligations rated Prime-1  by Moody's or A-1 by S&P,  or
comparably  rated  by  another  nationally  recognized  rating  agency.  See the
Appendix to this Prospectus for a discussion of S&P and Moody's ratings; and
 
   
   (5) Cash, other non-securities assets  such as accrued interest,  receivables
from investment securities sold, prepaid expenses, as well as other high quality
short term interest bearing debt securities not discussed above.
    
Market  prices  of the  securities in  which  U.S. Government  Securities Series
invests will  fluctuate  and  will  tend  to  vary  inversely  with  changes  in
prevailing  interest rates. If interest rates  increase from the time a security
is purchased, such security,  if sold, might  be sold at a  price less than  its
purchase cost. Conversely, if interest rates decline from the time a security is
purchased,  such security, if  sold, might be  sold at a  price greater than its
purchase cost.
 
DIVERSIFIED INCOME SERIES
 
   
The objective of  Diversified Income  Series is  to maximize  total return  from
income and market value change by investing primarily in a diversified portfolio
of  government  securities  and investment  grade  corporate  bonds. Diversified
Income  Series   will  pursue   its  objective   by  investing,   under   normal
circumstances,  at  least  70%  of  its total  assets  in  (a)  investment grade
corporate fixed income securities,  which are generally  considered to be  those
fixed  income securities rated within one of the four highest grades assigned by
Moody's (Aaa, Aa, A and Baa) or by S&P (AAA, AA, A and BBB), or comparably rated
by  another  nationally  recognized   rating  agency;  (b)  securities   issued,
guaranteed  or  insured  by the  United  States  Government or  its  agencies or
instrumentalities; (c) mortgage-related securities in which the U.S.  Government
Securities  Series  may invest;  (d)  repurchase agreements  pertaining  to such
securities; (e) commercial paper of companies  having, at the time of  purchase,
an  issue of outstanding debt securities rated Baa or above by Moody's or BBB or
above by  S&P,  or comparably  rated  by another  nationally  recognized  rating
agency, or commercial paper rated P-1 or P-2 by Moody's or A-1 or A-2 by S&P, or
comparably  rated by another  nationally recognized rating  agency; and (f) cash
and income producing cash equivalents.
    
 
   
Additionally, under  normal  circumstances,  up to  30%  of  Diversified  Income
Series'  total  assets may  be invested  in  any combination  of (a)  common and
preferred stocks  and convertible  securities;  (b) dollar  denominated  foreign
securities (provided that such investments in foreign securities will be limited
to 10% of the total assets of Diversified Income Series); and (c) non-investment
grade  bonds (sometimes  referred to  as "junk  bonds") and  non-rated corporate
bonds. The lowest eligible  rating category in which  the Series will invest  is
Caa  as determined by Moody's and CCC  as determined by S&P, or comparably rated
by another nationally  recognized rating agency,  except that up  to 10% of  the
assets  of  the  Diversified  Income Series  may  be  invested  in nonperforming
securities rated lower  than these categories  or which are  unrated. See  "High
Yield Series--Risks of Transactions in High-Yielding Securities."
    
 
   
The  table below  shows the weighted  average percentages  of Diversified Income
Series' long-term bond  investments during  the fiscal year  ended December  31,
1997,  represented by  (1) bonds  rated by  a nationally  recognized statistical
rating organization, separated into  each rating category,  and (2) all  unrated
bonds as a group.
    
 
   
<TABLE>
<CAPTION>
STANDARD & POOR'S RATING                             PERCENT OF TOTAL
(OR EQUIVALENT)                                        INVESTMENTS
- --------------------------------------------------  ------------------
<S>                                                 <C>
AAA...............................................       35.9%
AA................................................        6.3%
A.................................................       14.5%
BBB...............................................       24.6%
BB................................................        4.1%
B.................................................       11.8%
CCC...............................................        0.5%
CC................................................          0%
C.................................................          0%
D.................................................        0.3%
All unrated bonds as a group......................        2.0%
                                                        -----
                                                        100.0%
                                                        -----
                                                        -----
</TABLE>
    
 
For  an explanation of  investment quality ratings assigned  by Moody's and S&P,
see the Appendix.
 
GLOBAL BOND SERIES
 
   
The investment objective  of Global  Bond Series  is total  return from  current
income  and capital  appreciation. Global  Bond Series  invests its  assets in a
global portfolio principally consisting of high quality fixed-income  securities
of  governmental and  corporate issuers  and supranational  organizations, which
securities have varying  maturities and are  denominated in various  currencies,
including  the U.S. dollar.  The Series may  invest in any  region of the world,
including the  United States.  As discussed  below under  "Investment  Policies,
Restrictions,  and Risks  Applicable to  More Than  One Series--Foreign Currency
Forward  Exchange   Contracts,"   the  Global   Bond   Series  may   engage   in
hedging/cross-hedging transactions; typically however Global Bond Series will be
invested in the same number of currencies as countries in which it is invested.
    
 
   
It is the present intention of the Series' sub-adviser, Mercury Asset Management
International  Ltd. ("Mercury International") to  invest the Global Bond Series'
assets  principally  in   fixed-income  securities  of   companies  within,   or
governments  of,  the United  States,  Continental Europe,  the  United Kingdom,
Canada, the  Pacific Basin  and in  such other  areas and  countries as  Mercury
International  may determine  from time  to time,  including countries  that are
considered emerging market countries at the time of investment. At all times  at
least  80%  of  the Series'  assets  will  be invested  in  developed countries.
Developed  countries  include  Canada,  the  United  Kingdom,  France,  Germany,
Australia,  New  Zealand, Austria,  Belgium,  Denmark, Finland,  Ireland, Italy,
Japan, Luxembourg, the Netherlands, Norway,  Spain, Sweden, Switzerland and  the
United  States.  For a  description of  the risks  associated with  investing in
foreign securities, see "Investment Policies, Restrictions, and Risks Applicable
to More Than One Series--Investment in Foreign Securities."
    
 
   
In pursuing its  investment objective,  Global Bond  Series invests  in a  broad
range  of  fixed-income  securities.  Under  normal  market  conditions, Mercury
International anticipates that the Series  will be invested primarily in  fixed-
income securities issued or guaranteed by (a) governments and their agencies and
instrumentalities,   (b)  government-related  issuers,   and  (c)  supranational
organizations (such  as the  World Bank,  The European  Economic Community,  The
Asian  Development Bank and  The European Coal and  Steel Community). The Series
also invests  in corporate  fixed-income securities  issued by  foreign or  U.S.
companies; certificates of
    
 
                                       10
<PAGE>
   
deposit  and  bankers' acceptances  issued or  guaranteed  by, or  time deposits
maintained at,  banks (including  foreign  branches of  U.S.  banks or  U.S.  or
foreign  branches of foreign  banks); and commercial paper  issued by foreign or
U.S. companies. Under  normal conditions, at  least 90% of  Global Bond  Series'
assets  will be invested  in high quality securities,  I.E., securities that are
rated AA or  better by S&P  or Aa or  better by Moody's  or comparably rated  by
another  nationally recognized rating agency, or,  if unrated, are determined by
Mercury International to be  of comparable quality. At  no time will the  Series
invest  in securities that are rated below "A" or, if unrated, are determined by
Mercury International to  be of  comparable quality. See  the Appendix  attached
hereto  for  a  description  of  the  ratings  of  fixed-income  securities  and
commercial paper.
    
 
   
When, in  Mercury International's  judgment,  business or  financial  conditions
warrant, Global Bond Series may assume a temporary defensive position and invest
without  limit in high quality short-term debt  securities or hold its assets in
cash. See "Investment Policies, Restrictions, and Risks Applicable to More  Than
One  Series--Short-Term Money  Market Instruments." During  those intervals when
the Series has assumed  a temporary defensive position,  the Series will not  be
pursuing its investment objective.
    
 
   
The  maturities of investments held by the Global Bond Series are not subject to
any prescribed limits. A longer average maturity is generally associated with  a
higher  level of volatility in the market  value of a fixed-income security. The
maturity of a security  measures only the  time until final  payment is due;  it
takes  no  account  of the  pattern  of  the security's  cash  flows  over time,
including how cash flow  is affected by prepayments  and by changes in  interest
rates.  The  average  duration of  Global  Bond  Series will  vary  depending on
anticipated market conditions. The Series' average duration is a measure of  the
price  sensitivity of  its investment  portfolio, including  expected cash flow,
redemptions and  mortgage  prepayments  under  a wide  range  of  interest  rate
conditions.  In  computing the  duration  of the  Series'  investment portfolio,
Mercury International will estimate the duration of obligations that are subject
to prepayment or redemption by the  issuer taking into account the influence  of
interest  rates. The Series' average duration generally will be shorter than its
average  maturity.  Under  normal   market  conditions,  Mercury   International
anticipates  that the  average weighted  duration of the  Series will  be in the
range of two to eight years.
    
 
HIGH YIELD SERIES
 
   
The investment objective of High Yield  Series is to maximize total return  from
income and market value change by investing primarily in a diversified portfolio
of  high-yield,  high-risk, fixed-income  securities  (sometimes referred  to as
"junk bonds").  Under normal  circumstances, High  Yield Series  will invest  at
least  65% of its total assets in  non-investment grade (as defined below) fixed
income securities, convertible securities, options on debt securities,  interest
rate  futures contracts  and options thereon,  common and  preferred stocks, and
other equity securities when these types of instruments are consistent with High
Yield Series' investment objective. High  Yield Series' remaining assets may  be
held  in cash or cash  equivalents or invested in  investment grade fixed income
instruments.
    
 
   
The higher  yields that  High  Yield Series  seeks  are usually  available  from
non-investment grade securities--those rated lower than Baa3 by Moody's or lower
than  BBB- by S&P,  or comparably rated by  another nationally recognized rating
agency, and  unrated  securities  of  similar quality.  This  is  an  aggressive
approach  to income investing and  is subject to greater  risk than investing in
higher quality securities. The High  Yield Series may invest without  limitation
in  any "eligible" rating category. The lowest eligible rating category in which
High Yield  Series will  invest  is Caa  as determined  by  Moody's and  CCC  as
determined  by S&P, or comparably rated  by another nationally recognized rating
agency, except that up  to 10% of  the Series' total assets  may be invested  in
"non-performing" securities rated lower than these categories. Securities in the
Caa/CCC  rating  category  are  considered  to  be  of  poor  standing  and  are
predominantly speculative. Lower ratings may reflect a greater possibility  that
the  financial condition of  the issuer, or adverse  changes in general economic
conditions, or both, may impair  the ability of the  issuer to make payments  of
interest and principal. Additionally, investments in securities rated Caa or CCC
involve  significant risk exposure to adverse conditions. Such securities may be
in default  or there  may be  present elements  of danger  with respect  to  the
payment   of  principal  or  interest.   Non-performing  securities  are  highly
speculative. For a discussion of Moody's and S&P ratings, see the Appendix.
    
 
   
The prices and  yields of  non-investment grade  securities generally  fluctuate
more than investment grade securities, and such prices may decline significantly
in  periods of  general economic difficulty  or rising  interest rates. Advisers
reserves the  right  to adopt  a  defensive approach  by  temporarily  investing
without  limitation in cash, investment grade debt securities, commercial paper,
and/or in obligations of banks or the United States government.
    
 
In considering  investments for  High  Yield Series,  Advisers will  attempt  to
identify  high-yielding securities of issuer companies whose financial condition
has improved or is  expected to improve  in the future.  Advisers will not  rely
exclusively  on ratings  assigned by  Moody's and S&P  in this  process, but, in
appropriate  circumstances,  may  perform  its  own  credit  analysis  as  well.
Advisers' analysis focuses on relative values, based on such factors as interest
or dividend coverage, asset coverage, earnings prospects, and the experience and
managerial strength of the issuer companies.
 
   
Because  High Yield Series invests primarily in non-investment grade securities,
investors should carefully consider their  ability to assume the risks  involved
before making an investment.
    
 
For  a discussion  of payment-in-kind debentures  ("PIKs"), in  which High Yield
Series may invest, see "Investment Policies, Restrictions, and Risks  Applicable
to More Than One Series."
 
   
The  table below  shows the weighted  average percentages of  High Yield Series'
long-term bond  investments during  the  fiscal year  ended December  31,  1997,
represented  by (1)  bonds rated by  a nationally  recognized statistical rating
organization, separated into each rating category, and (2) all unrated bonds  as
a group.
    
 
   
<TABLE>
<CAPTION>
STANDARD & POOR'S RATING                             PERCENT OF TOTAL
(OR EQUIVALENT)                                        INVESTMENTS
- --------------------------------------------------  ------------------
<S>                                                 <C>
AAA...............................................        0.3%
AA................................................          0%
A.................................................        1.0%
BBB...............................................        0.3%
BB................................................       17.9%
B.................................................       64.0%
CCC...............................................        7.1%
CC................................................          0%
C.................................................        0.5%
D.................................................        3.3%
All unrated bonds as a group......................        5.6%
                                                        -----
                                                        100.0%
                                                        -----
                                                        -----
</TABLE>
    
 
For  an explaination of investment quality  ratings assigned by Moody's and S&P,
see the Appendix.
 
RISKS OF  TRANSACTIONS  IN  HIGH-YIELDING  SECURITIES.  Participation  in  high-
yielding  securities  transactions  generally involves  greater  returns  in the
 
                                       11
<PAGE>
   
form of  higher  average yields.  However,  participation in  such  transactions
involves greater risks, often related to sensitivity to interest rates, economic
changes, solvency, and relative liquidity in the secondary trading market.
    
 
   
Yields  on high yield securities  will fluctuate over time.  The prices of high-
yielding securities  have been  found  to be  less  sensitive to  interest  rate
changes  than higher-rated investments,  but more sensitive  to adverse economic
changes or  individual  issuer  developments. During  an  economic  downturn  or
substantial  period  of  rising  interest  rates  highly  leveraged  issuers may
experience financial  stress  which  would adversely  affect  their  ability  to
service  their  principal and  interest payment  obligations, to  meet projected
business goals, and to obtain additional financing. If the issuer of a  security
held by High Yield Series defaulted, the Series may incur additional expenses to
seek  recovery. In addition, periods of  economic uncertainty and changes can be
expected to result  in increased  volatility of market  prices of  high-yielding
securities  and High Yield Series' net asset  value. Furthermore, in the case of
high-yielding securities structured as zero coupon or PIKs, their market  prices
are affected to a greater extent by interest rate changes and thereby tend to be
more volatile than securities which pay interest periodically and in cash.
    
 
   
High-yielding  securities  present  risks  based  on  payment  expectations. For
example, high-yielding securities may contain redemption or call provisions.  If
an  issuer exercises these provisions in  a declining interest rate market, High
Yield Series would have to replace the security with a lower yielding  security,
resulting  in  a decreased  return  for investors.  Conversely,  a high-yielding
security's value will  decrease in a  rising interest rate  market, as will  the
value  of the  Series' assets. If  High Yield Series  experiences unexpected net
redemptions, this  may force  it  to sell  its  securities (including,  but  not
limited  to,  high  yielding  securities), without  regard  to  their investment
merits, thereby decreasing the asset base upon which the Series' expenses can be
spread and possibly reducing the rate of return.
    
 
   
To the extent that there is no  established secondary market, there may be  thin
trading  of high-yielding securities.  This may adversely  affect the ability of
Fortis Series' Board of Directors  to accurately value high-yielding  securities
and  the High  Yield Series' assets  and the  Series' ability to  dispose of the
securities. Securities valuation  becomes more  difficult and  judgment plays  a
greater  role  in  valuation  because there  is  less  reliable,  objective data
available. Adverse publicity and investor  perceptions, whether or not based  on
fundamental  analysis, may  decrease the  values and  liquidity of high-yielding
securities, especially  in  a  thinly  traded  market.  Illiquid  or  restricted
high-yielding   securities  purchased   by  the   Series  may   involve  special
registration  responsibilities,  liabilities  and   costs,  and  liquidity   and
valuation difficulties.
    
 
   
Certain  risks  are associated  with  applying credit  ratings  as a  method for
evaluating high-yielding securities.  For example, credit  ratings evaluate  the
safety  of  principal and  interest  payments, not  market  value risk  of high-
yielding securities. Since credit rating agencies may fail to timely change  the
credit  ratings to reflect subsequent events, Advisers continuously monitors the
issuers of high-yielding securities  held by High Yield  Series to determine  if
the  issuers  will  have  sufficient  cash flow  and  profits  to  meet required
principal and interest payments and to  assure the securities' liquidity so  the
Series  can meet redemption requests. The  achievement of the Series' investment
objective may be more dependent upon  Advisers' own credit analysis than is  the
case for higher quality bonds.
    
 
GLOBAL ASSET ALLOCATION SERIES
 
   
The  objective  of Global  Asset Allocation  Series is  maximum total  return on
invested capital, to be derived  primarily from capital appreciation,  dividends
and  interest.  The Series  attempts  to achieve  its  objective by  following a
flexible asset  allocation strategy  that  contemplates increased  ownership  of
equity  securities during periods when  stock market conditions appear favorable
and increased ownership  of short and  long-term fixed-income securities  during
periods  when stock market conditions are  less favorable. To achieve this goal,
the composition  of Global  Asset Allocation  Series will  vary with  prevailing
economic  conditions.  The Series'  neutral allocation  is approximately  60% in
equity securities  (including fixed  income securities  convertible into  equity
securities)  and approximately  40% in fixed-income  securities (including money
market securities). Under normal conditions,  either allocation may increase  to
75%  or decrease to 25%, although the Series may have all of its assets invested
in either equity or fixed-income securities.
    
 
   
EQUITY INVESTMENTS.  The approach  of the  Series' sub-adviser,  Morgan  Stanley
Asset  Management Limited  ("Morgan Stanley"),  is oriented  to individual stock
selection and  is value  driven.  In selecting  stocks  for the  Series,  Morgan
Stanley  initially identifies those stocks that it believes to be undervalued in
relation to the  issuer's assets,  cash flow, earnings  and, where  appropriate,
revenues,  and then  evaluates the  future value  of such  stocks by  applying a
dividend discount model to the information  obtained from its in-depth study  of
the  issuer.  Morgan  Stanley utilizes  the  research  of a  number  of sources,
including  its  affiliate  in   Geneva,  Switzerland,  Morgan  Stanley   Capital
International,  and  applies  a  number  of  proprietary  screening  criteria to
identify those securities that it believes  to be undervalued. The holdings  are
regularly  reviewed and subjected  to fundamental analysis  to determine whether
they continue to conform to Morgan Stanley's value criteria. Securities that  no
longer conform to such value criteria are sold.
    
 
Morgan  Stanley  intends  to invest  in  the  common stocks  of  issuers located
throughout the world, including  issuers based in the  United States as well  as
emerging  markets. Common stocks for this purpose include securities convertible
into common stocks and securities  having common stock characteristics, such  as
rights  and warrants to  purchase common stocks.  The Series may  also invest in
American Depositary Receipts,  European Depositary  Receipts or  other types  of
depositary   receipts.  See   "Investment  Policies,   Restrictions,  and  Risks
Applicable to  More  Than  One  Series--  Depositary  Receipts."  Securities  in
emerging markets may not be as liquid as those in developed markets and may pose
greater  risks.  For a  description of  the risks  associated with  investing in
foreign securities see "Investment Policies, Restrictions, and Risks  Applicable
to  More Than  One Series-- Investment  in Foreign  Securities." Although Morgan
Stanley intends to invest primarily in securities listed on stock exchanges,  it
will also invest in securities traded in over-the-counter markets.
 
   
FIXED-INCOME   INVESTMENTS.  Fixed-income  investments   include  United  States
government   securities,   foreign   government   securities,   securities    of
supranational  entities, Eurobonds  and corporate bonds  with varying maturities
denominated in various currencies and money market instruments. See  "Investment
Policies, Restrictions, and Risks Applicable to More Than One Series--Short Term
Money Market Instruments." In evaluating fixed-income securities, Morgan Stanley
evaluates  the currency, market and individual  features of the securities being
considered for  investment. The  Series  seeks to  minimize investment  risk  by
investing  in fixed-income  securities rated  A or better  by S&P  or Moody's or
comparably rated by another nationally recognized rating agency, or, if unrated,
are determined to be of comparable quality by Morgan Stanley.
    
 
   
ASSET ALLOCATION SERIES
    
 
   
The objective of  Asset Allocation Series  is maximum total  return on  invested
capital,  to  be derived  primarily  from capital  appreciation,  dividends, and
interest. The Series attempts to achieve  its objective by following a  flexible
asset  allocation  strategy  that  contemplates  increased  ownership  of equity
securities during  periods when  stock market  conditions appear  favorable  and
increased ownership of short and long-term
    
 
                                       12
<PAGE>
   
fixed  income instruments during  periods when stock  market conditions are less
favorable. To achieve this goal, the composition of Asset Allocation Series will
vary with prevailing economic conditions and may consist of any of the types  of
investments in which the Money Market Series, U.S. Government Securities Series,
Diversified Income Series, and Growth Stock Series are permitted to invest.
    
 
   
Depending  upon  prevailing  economic and  market  conditions,  Asset Allocation
Series may  at  any given  time  be  primarily comprised  of  equity  securities
(including  debt securities  convertible into  equity securities)  or short-term
money market securities or investment grade bonds and other debt securities,  or
any combination thereof.
    
 
   
Fixed  income securities in which Asset Allocation Series may invest include the
investment grade and non-investment grade bonds (sometimes referred to as  "junk
bonds") in which the Diversified Income Series and High Yield Series may invest.
For  risks connected  with such  investments, see  "High Yield  Series--Risks of
Transactions in High-Yielding Securities."
    
 
   
Asset Allocation Series  may invest up  to 20%  of its total  assets in  foreign
securities  (provided that no more than 15%  of its total assets may be invested
in foreign  securities  that  are  not traded  on  national  foreign  securities
exchanges  or traded in the United  States). Investing in foreign securities may
result in greater risk than that  incurred in investing in domestic  securities.
For  a discussion of certain considerations  of investing in foreign securities,
see "Investment Policies, Restrictions,  and Risks Applicable  to More Than  One
Series--Investment in Foreign Securities."
    
 
   
Unlike  shareholders  of the  other Series,  a  shareholder of  Asset Allocation
Series confers substantially  more investment discretion  on Advisers,  enabling
Advisers to invest in a wider variety of investment securities.
    
 
   
The  table  below shows  the weighted  average  percentages of  Asset Allocation
Series' long-term bond  investments during  the fiscal year  ended December  31,
1997,  represented by  (1) bonds  rated by  a nationally  recognized statistical
rating organization, separated into  each rating category,  and (2) all  unrated
bonds as a group.
    
 
   
<TABLE>
<CAPTION>
STANDARD & POOR'S RATING                             PERCENT OF TOTAL
(OR EQUIVALENT)                                        INVESTMENTS
- --------------------------------------------------  ------------------
<S>                                                 <C>
AAA...............................................       55.6%
AA................................................        4.5%
A.................................................        9.8%
BBB...............................................       15.3%
BB................................................        3.0%
B.................................................       10.4%
CCC...............................................        0.4%
CC................................................          0%
C.................................................          0%
D.................................................        0.2%
All unrated bonds as a group......................        0.8%
                                                        -----
                                                        100.0%
                                                        -----
                                                        -----
</TABLE>
    
 
   
For  an explanation of  investment quality ratings assigned  by Moody's and S&P,
see the Appendix.
    
 
VALUE SERIES
 
   
Value Series'  primary  investment  objective is  short  and  long-term  capital
appreciation.  Current income is only a  secondary objective. The Series invests
primarily in equity securities and selects stocks based on the value philosophy.
    
 
In seeking  to  attain  its  investment  objective,  Value  Series  will  invest
primarily  in  common  stocks  or  securities  convertible  into  common stocks.
Occasionally, however,  limited  amounts  may  be invested  in  other  types  of
securities  (such as nonconvertible  preferred and debt  securities). In periods
when a more defensive position is  deemed warranted, Value Series may invest  in
high grade preferred stocks, bonds and other fixed income securities (whether or
not  convertible into  or carrying  rights to  purchase common  stock) or retain
cash, all without limitation. Value  Series may invest in repurchase  agreements
and in both listed and unlisted securities.
 
   
Value  Series  may  also  invest  up  to 10%  of  its  total  assets  in foreign
securities. Investing in foreign securities may result in greater risk than that
incurred in investing in domestic securities. For a discussion of certain  other
investment  practices and  techniques of  the Series,  see "Investment Policies,
Restrictions and Risks Applicable to More Than One Series."
    
 
GROWTH & INCOME SERIES
 
   
The investment objectives of Growth & Income Series are capital appreciation and
current income. It  seeks to achieve  this objective by  investing primarily  in
equity securities that provide an income component and the potential for growth.
Growth  & Income Series will pursue its  investment objectives by investing in a
broadly diversified portfolio of securities,  with an emphasis on securities  of
companies  that have a history of  dividend payments. Companies will be selected
on the basis  of their  prospects for  long-term growth  and continued  dividend
payments.  Occasionally, however, limited amounts may be invested in other types
of  securities  (such  as  nonconvertible  preferred  stock  and  fixed   income
securities).  In periods  when a  more defensive  position is  deemed warranted,
Growth & Income  Series may invest  in high grade  preferred stocks, bonds,  and
other  fixed  income securities  (whether or  not  convertible into  or carrying
rights to purchase common stock) or retain cash, all without limitation.  Growth
&  Income Series  may invest  in repurchase  agreements and  in both  listed and
unlisted securities.
    
 
   
Growth & Income Series may also invest up to 10% of its total assets in  foreign
securities. Investing in foreign securities may result in greater risk than that
incurred  in  investing  in domestic  securities.  For a  discussion  of certain
considerations of  investing in  foreign  securities see  "Investment  Policies,
Restrictions,  and  Risks Applicable  to More  Than  One Series--  Investment in
Foreign Securities."
    
 
S&P 500 INDEX SERIES
 
   
The investment  objective of  S&P 500  Index Series  is to  replicate the  total
return  of the Standard &  Poor's 500 Composite Stock  Price Index (the "S&P 500
Index" or the "Index") primarily through investments in equity securities.
    
 
   
The Series is not managed according to traditional methods of active  investment
management,  which  involve  the buying  and  selling of  securities  based upon
economic, financial and  market analysis and  investment judgment. Instead,  the
Series  utilizes  a passive  investment  approach, attempting  to  duplicate the
investment performance of the S&P 500 Index through statistical procedures.
    
 
   
The S&P 500 Index is composed of 500 common stocks that are selected by Standard
& Poor's Rating Services  ("Standard & Poor's"), a  division of The  McGraw-Hill
Companies,  Inc., to capture the best price performance of a large cross-section
of the U. S.  publicly traded stock  market. The 500  securities, most of  which
trade  on the New York Stock Exchange, represent approximately 75% of the market
value of all U.S. common stocks. Each stock in the S&P 500 Index is weighted  by
its  market  capitalization. That  is, each  security is  weighted by  its total
market value relative to the total
    
 
                                       13
<PAGE>
   
market value of all  the securities in the  Index. Component stocks included  in
the  S&P 500 Index  are chosen with the  aim of achieving  a distribution at the
index level representative  of the various  components of the  U.S. economy  and
therefore do not represent the 500 largest companies. Aggregate market value and
trading activity are also considered in the selection process.
    
 
   
The  S&P 500 Index  Series expects to  invest in all  500 stocks in  the S&P 500
Index in proportion to their weighting in the Index. To the extent that the size
of the Index Series does not permit it to invest in all 500 stocks in the Index,
the Index  Series will  purchase a  representative sample  of stocks  from  each
industry sector included in the Index in proportion to that industry's weighting
in the Index.
    
 
   
To  the extent that the  Series seeks to replicate the  S&P 500 Index using such
sampling techniques, a close correlation between the Series' performance and the
performance of the Index is anticipated in both rising and falling markets.  The
Series  attempts  to  achieve  a  correlation  between  the  performance  of its
investments and  that  of  the Index  of  at  least 0.95,  before  deduction  of
expenses.  A  correlation of  1.00 would  represent perfect  correlation between
Series and Index  performance. It  is anticipated  that the  correlation of  the
Series' performance to that of the Index will increase as the size of the Series
increases. The Series' ability to achieve significant correlation between Series
and  Index performance may be affected by changes in securities markets, changes
in the composition of the Index and  the timing of purchases and redemptions  of
Series  shares. Advisers and  the sub-adviser, The  Dreyfus Corporation, monitor
this correlation and  report periodically to  the Board of  Directors of  Fortis
Series.  Should the Series fail to  achieve an appropriate level of correlation,
the Board will consider alternative arrangements.
    
 
   
Under normal circumstances, the Series invests at least 95% of its total  assets
in  the common stocks included in the  S&P 500 Index. To maintain liquidity, the
Series may invest  up to 5%  of its  assets in the  following instruments:  U.S.
Government  securities,  commercial paper,  bank  certificates of  deposit, bank
demand and time deposits, repurchase agreements, reverse repurchase  agreements,
when-issued transactions and variable amount master demand notes. The Series may
enter  into  futures contracts  and  options to  a  limited extent.  For further
information on  these instruments  and  investment techniques,  see  "Investment
Policies,  Restrictions and  Risks Applicable to  More Than One  Series" and the
Statement of Additional Information.
    
 
Standard  &  Poor's-Registered  Trademark-,  "S&P-Registered  Trademark-,"  "S&P
500-Registered Trademark-," "Standard & Poor's 500," and "500" are trademarks of
McGraw-Hill, Inc. and have been licensed for use by Fortis Series. The Series is
not  sponsored, endorsed, sold or  promoted by Standard &  Poor's and Standard &
Poor's makes no representation  regarding the advisability  of investing in  the
Series.  Standard  &  Poor's makes  no  representation or  warranty,  express or
implied, to the owners of the Series  or any member of the public regarding  the
advisability  of investing in securities generally or in the Series particularly
or the ability of the S&P 500  Index to track general stock market  performance.
Standard & Poor's only relationship to Fortis Series is the licensing of certain
trademarks  and trade names of Standard & Poor's  and of the S&P 500 Index which
is determined, composed and  calculated by Standard &  Poor's without regard  to
Fortis  Series or the  Series. Standard &  Poor's has no  obligation to take the
needs of  Fortis  Series or  the  owners of  the  Series into  consideration  in
determining,  composing or calculating  the S&P 500 Index.  Standard & Poor's is
not responsible for and has not participated in the determination of the  prices
and  amount of the Series or the timing of the issuance or sale of the Series or
in the determination or calculation of the equation by which the Series is to be
converted into  cash.  Standard &  Poor's  has  no obligation  or  liability  in
connection with the administration, marketing or trading of the Series.
 
STANDARD & POOR'S DOES NOT GUARANTEE THE ACCURACY AND/OR THE COMPLETENESS OF THE
S&P  500 INDEX OR ANY DATA INCLUDED THEREIN  AND STANDARD & POOR'S SHALL HAVE NO
LIABILITY FOR ANY ERRORS, OMISSIONS, OR INTERRUPTIONS THEREIN. STANDARD & POOR'S
MAKES NO WARRANTY,  EXPRESS OR  IMPLIED, AS  TO RESULTS  TO BE  OBTAINED BY  THE
SERIES,  OWNERS OF THE SERIES OR ANY OTHER  PERSON OR ENTITY FROM THE USE OF THE
S&P 500 INDEX OR ANY DATA INCLUDED  THEREIN. STANDARD & POOR'S MAKES NO  EXPRESS
OR IMPLIED WARRANTIES, AND EXPRESSLY DISCLAIMS ALL WARRANTIES OF MERCHANTABILITY
OR  FITNESS FOR A PARTICULAR PURPOSE OR USE WITH RESPECT TO THE S&P 500 INDEX OR
ANY DATA INCLUDED THEREIN.  WITHOUT LIMITING ANY OF  THE FOREGOING, IN NO  EVENT
SHALL  STANDARD & POOR'S HAVE ANY LIABILITY FOR ANY SPECIAL, PUNITIVE, INDIRECT,
OR CONSEQUENTIAL  DAMAGES (INCLUDING  LOST  PROFITS), EVEN  IF NOTIFIED  OF  THE
POSSIBILITY OF SUCH DAMAGES.
 
   
BLUE CHIP STOCK SERIES
    
 
   
Blue  Chip Stock  Series' primary investment  objective is  to provide long-term
growth of capital.  Current income  is a secondary  objective, and  many of  the
stocks in the Series' portfolio are expected to pay dividends.
    
 
The  Series will  invest at least  65% of total  assets in the  common stocks of
large and medium-sized  blue chip companies,  as defined by  T. Rowe Price,  the
sub-adviser  to the  Series. These companies  will be well  established in their
industries and have the potential for above-average growth in earnings.
 
   
Most of the assets will be invested  in U.S. common stocks. However, the  Series
may  also purchase other  types of securities,  for example, foreign securities,
preferred stocks, convertible  stocks and bonds,  and warrants, when  considered
consistent with the Series' investment objectives. The Series may also engage in
a variety of investment management practices, such as buying and selling futures
and  options. Investments in convertible  securities, preferred stocks and fixed
income securities are limited to 25% of total assets.
    
 
   
STOCK SELECTION. In applying  a "blue chip" investment  approach, T. Rowe  Price
analysts  evaluate the growth prospects of companies and the industries in which
they operate.  This approach  seeks  to identify  companies with  strong  market
franchises  in industries that  appear to be  strategically poised for long-term
growth. Its  investment  approach  reflects  T. Rowe  Price's  belief  that  the
combination  of solid company  fundamentals (with emphasis  on the potential for
above-average growth in earnings) along with a positive outlook for the  overall
industry  will  ultimately reward  investors with  a  higher stock  price. While
primary emphasis  is placed  on a  company's prospects  for future  growth,  the
Series  will  not purchase  securities  that, in  T.  Rowe Price's  opinion, are
overvalued considering the underlying business  fundamentals. In the search  for
capital  appreciation, the Series looks  for stocks attractively priced relative
to their anticipated long-term value.
    
 
The Series will generally take  the following into consideration when  selecting
stocks:
 
  - LEADING   MARKET  POSITIONS.   Blue  chip   companies  often   have  leading
    market positions that are expected to  be maintained or enhanced over  time.
    Strong  positions, particularly  in growing  industries, can  give a company
    pricing flexibility as  well as  the potential  for good  unit sales.  These
    factors, in turn, can lead to higher earnings growth and greater share price
    appreciation.
 
  - SEASONED    MANAGEMENT   TEAMS.    Seasoned   management    teams   with   a
    track record of  providing superior  financial results are  important for  a
 
                                       14
<PAGE>
    company's long-term growth prospects. T. Rowe Price's analysts will evaluate
    the depth and breadth of a company's management experience.
 
  - STRONG FINANCIAL FUNDAMENTALS. Companies should demonstrate
    faster  earnings growth  than their competitors  and the  market in general;
    high profit margins  relative to  competitors; strong cash  flow; a  healthy
    balance  sheet with relatively low debt; and  a high return on equity with a
    comparatively low dividend payout ratio.
 
TYPES OF PORTFOLIO SECURITIES. In seeking to meet its investment objective,  the
Series  may  invest in  any type  of security  or instrument  (including certain
potentially  high  risk  derivatives)   whose  investment  characteristics   are
consistent  with the  Series' investment  program. These  and some  of the other
investment techniques the Series may use are described below.
 
  - PREFERRED  STOCKS.  While  most  preferred   stocks  pay  a  dividend,   the
    Series  may purchase preferred stock where the  issuer has omitted, or is in
    danger of omitting, payment of its dividend. Such investments would be  made
    primarily for their capital appreciation potential.
 
  - FOREIGN   SECURITIES.  The  Series  may  invest  up  to  20%  of  its  total
    assets  (excluding   reserves)   in  foreign   securities.   These   include
    nondollar-denominated   securities   traded   outside   of   the   U.S.  and
    dollar-denominated securities  traded  in  the  U.S.  (such  as  ADRs).  See
    "Investment  Policies, Restrictions  and Risks  Applicable to  More Than One
    Series--Investment  in  Foreign  Securities."  The  Series  may  invest   in
    securities  from  emerging markets,  which have  greater risks  than foreign
    securities in  general. See  "Investment Policies,  Restrictions, and  Risks
    Applicable to More Than One Series--Emerging Markets."
 
   
  - FIXED-INCOME   SECURITIES.   The   Series  may   invest   in   fixed  income
    securities of any type without regard to quality or rating. Such  securities
    would  be purchased in companies which  meet the investment criteria for the
    Series.
    
 
   
    However, the Series will  not purchase a  non-investment grade fixed  income
    security  (junk bond)  if immediately after  such purchase  the Series would
    have more  than 5%  of its  total assets  invested in  such securities.  For
    further  information on  "high yield" (junk)  bonds, including  the risks of
    such  investments,  see  "Investment  Objectives  and  Policies--High  Yield
    Series."
    
 
  - HYBRID   INSTRUMENTS.  These  instruments  (a   type  of  potentially  high-
    risk derivative) can combine the characteristics of securities, futures  and
    options.  For example, the principal  amount, redemption or conversion terms
    of a  security could  be related  to  the market  price of  some  commodity,
    currency  or  securities index.  Such securities  may  bear interest  or pay
    dividends at below market (or even relatively nominal) rates. Under  certain
    conditions,  the redemption value  of such an investment  could be zero. The
    Series may invest up to 10% of its total assets in hybrid instruments.
 
The Series may employ the following types of management practices:
 
  - CASH POSITION.  The Series  will hold  a certain  portion of  its assets  in
    U.S.  and  foreign  dollar-denominated  money  market  securities, including
    repurchase agreements, in the two highest rating categories, maturing in one
    year or  less. For  temporary,  defensive purposes,  the Series  may  invest
    without  limitation  in  such  securities.  This  reserve  position provides
    flexibility  in  meeting  redemptions,  expenses,  and  the  timing  of  new
    investments,  and serves as  a short-term defense  during periods of unusual
    market volatility.
 
   
  - FUTURES  AND   OPTIONS.  The   Series   may  buy   and  sell   futures   and
    options  contracts  for  any number  of  reasons, including:  to  manage its
    exposure to  changes in  securities  prices and  foreign currencies;  as  an
    efficient  means of  adjusting its overall  exposure to  certain markets; to
    enhance income; and to protect the value of portfolio securities. The Series
    may purchase, sell or  write call and put  options on securities,  financial
    indices,  and  foreign currencies.  See  "Futures Contracts  and  Options on
    Futures Contracts"  and "Options"  under the  caption "Investment  Policies,
    Restrictions, and Risks Applicable to More Than One Series."
    
 
  - OPERATING   POLICIES.   Futures:  Initial   margin  deposits   and  premiums
    on options used for non-hedging purposes will not equal more than 5% of  the
    Series'  net  assets.  Options  on securities:  The  total  market  value of
    securities against which the Series has written call or put options may  not
    exceed  25% of its total assets. The Series  will not commit more than 5% of
    its total assets to premiums when purchasing call or put options.
 
  - MANAGING  FOREIGN   CURRENCY   RISK.   Investors   in   foreign   securities
    may  "hedge" their exposure  to potentially unfavorable  currency changes by
    purchasing a contract to  exchange one currency for  another on some  future
    date  at  a  specified exchange  rate.  In certain  circumstances,  a "proxy
    currency" may be  substituted for the  currency in which  the investment  is
    denominated,  a strategy known as "proxy hedging." Although foreign currency
    transactions  will  be  used  primarily  to  protect  the  Series'   foreign
    securities  from  adverse currency  movements relative  to the  dollar, they
    involve the risk that anticipated currency movements will not occur and  the
    Series'  total  return  could  be  reduced.  See  "Foreign  Currency Forward
    Exchange Contracts" and  "Options on Foreign  Currencies" under the  caption
    "Investment  Policies, Restrictions, and  Risks Applicable to  More Than One
    Series."
 
   
INTERNATIONAL STOCK SERIES
    
 
   
The investment  objective  of International  Stock  Series is  to  seek  capital
appreciation  by investing primarily (at least  65% of total assets under normal
market conditions)  in  the equity  securities  of non-United  States  companies
(I.E., incorporated or organized outside the United States). However, the Series
may   have  substantial   investments  in  American   Depositary  Receipts  (see
"Investment Policies,  Restrictions,  and  Risks Applicable  to  More  Than  One
Series--Depositary  Receipts") and  in convertible  bonds and  other convertible
securities. The Series may invest up to 20% of the value of its total assets  in
fixed income securities and short-term money market instruments. See "Investment
Policies, Restrictions, and Risks Applicable to More Than One Series--Short-Term
Money  Market Instruments." International Stock Series' fixed income investments
will be limited to those rated A or better by S&P or Moody's or comparably rated
by another nationally recognized  rating agency, or,  if unrated, determined  by
the  Series'  sub-adviser, Lazard  Asset  Management ("Lazard"),  a  division of
Lazard Freres & Co. LLC, to be of comparable quality. See the Appendix  attached
hereto for a description of the ratings of fixed income securities.
    
 
   
It  is the present intention of Lazard to invest the Series' assets in companies
based in Continental Europe, the United  Kingdom, the Pacific Basin and in  such
other  areas  and countries  as  Lazard may  determine  from time  to  time. The
percentage  of  International  Stock  Series'  assets  invested  in   particular
geographic  sectors may shift from time to  time in accordance with the judgment
of Lazard. For a description of  the risks associated with investing in  foreign
securities  see "Investment Policies, Restrictions, and Risks Applicable to More
Than One Series--Investment in Foreign Securities."
    
 
   
In  selecting  investments  for  the   Series,  Lazard  attempts  to   ascertain
inexpensive   securities  world-wide  through  traditional  measures  of  value,
including  low  price  to  earnings  ratio,  high  yield,  unrecognized  assets,
potential  for management change and/or  the potential to improve profitability.
In  addition,  Lazard  seeks  to   identify  companies  that  it  believes   are
    
 
                                       15
<PAGE>
   
financially  productive  and undervalued  in  those markets.  Lazard  focuses on
individual stock selection (a "bottom-up"  approach) rather than on  forecasting
stock market trends (a "top-down" approach).
    
 
   
Lazard  recognizes that  some of  the best  opportunities are  in securities not
generally followed  by  investment professionals.  Thus,  Lazard relies  on  its
research  capability and also maintains a dialogue with foreign brokers and with
the management of foreign companies  in an effort to  gather the type of  "local
knowledge" that it believes is critical to successful investment abroad. To this
end,  Lazard communicates  with Lazard  Freres Gestion  Banque in  Paris, Lazard
Asset Management Ltd. in London and Lazard Japan Asset Management K.K. in  Tokyo
(independent   but  affiliated  entities)  for  information  concerning  current
business trends, as  well as  for a better  understanding of  the management  of
local businesses. The information supplied by these affiliates of Lazard will be
limited  to  statistical  and  factual  information,  advice  regarding economic
factors  and  trends  or  advice  as  to  occasional  transactions  in  specific
securities.
    
 
   
When,  in the judgment of Lazard,  business or financial conditions warrant, the
International Stock Series may assume a temporary defensive position and  invest
without  limit in  the equity securities  of U.S. companies  or short-term money
market instruments  or  hold  its  assets in  cash.  See  "Investment  Policies,
Restrictions,  and Risks Applicable  to More Than  One Series-- Short-Term Money
Market Instruments." During those intervals when International Stock Series  has
assumed  a temporary  defensive position,  the Series  will not  be pursuing its
investment objective.
    
 
   
MID CAP STOCK SERIES
    
 
   
Mid Cap Stock Series  seeks total investment  returns (capital appreciation  and
income)  that consistently  outperform the  Standard &  Poor's 400  MidCap Index
("S&P MidCap").
    
 
   
The Series attempts to maintain a diversified holding in common stocks of medium
capitalization companies that have  a market value between  $200 million and  $5
billion.  The Series' sub-adviser, The Dreyfus Corporation ("Dreyfus"), believes
that many medium-sized companies are in fast-growing industries, offer  superior
earnings  growth potential  and are characterized  by strong  balance sheets and
high returns on equity. Mid Cap Stock Series may also hold investments in  large
and  small  capitalization  companies, including  emerging  and  cyclical growth
companies.
    
 
   
Common stocks are  selected by the  sub-adviser so that,  in the aggregate,  the
investment  characteristics and risk profile of Mid Cap Stock Series are similar
to  that  of  the  S&P  MidCap.  While  it  may  maintain  aggregate  investment
characteristics  similar to the S&P MidCap, the Series seeks to invest in common
stocks of companies that, in the  aggregate, will provide a higher total  return
than the S&P MidCap. The Series is not an index fund and its investments are not
limited to securities of issuers included in the S&P MidCap.
    
 
   
Dreyfus  utilizes computer techniques to track  and, if possible, outperform the
S&P MidCap. Dreyfus employs valuation models designed to identify common  stocks
of  companies  that  are undervalued  in  order  to construct  a  portfolio that
resembles the S&P MidCap but is weighted toward the stocks that Dreyfus believes
are most attractive.
    
 
   
Under normal circumstances,  at least 65%  of the Series'  total assets will  be
invested in common stocks. The Series may also invest in: (1) obligations issued
or  guaranteed as to interest and principal by the U.S. government, its agencies
and instrumentalities;  (2) instruments  of U.S.  and foreign  banks,  including
certificates of deposit, banker's acceptances and time deposits, and may include
Eurodollar   certificates  of  deposit,  Yankee   certificates  of  deposit  and
Eurodollar time  deposits;  (3) corporate  obligations  rated at  least  Baa  by
Moody's  or BBB by  S&P or, if  unrated, of comparable  quality as determined by
Dreyfus; (4) Eurodollar  bonds and  notes; (5) securities  of foreign  companies
evidenced  by  American  Depository  Receipts;  (6)  repurchase  agreements; (7)
when-issued transactions; and (8) commercial paper. The Series may also  utilize
securities lending and reverse repurchase agreements, and may enter into options
and futures contracts for hedging purposes, subject to certain limitations.
    
 
   
The  S&P MidCap is composed  of 400 domestic common  stocks chosen by Standard &
Poor's for market  size, liquidity and  industry group representation.  It is  a
market-weighted  index (stock price  times shares outstanding),  with each stock
affecting the S&P MidCap in proportion to  its market value. The inclusion of  a
stock  in the S&P  MidCap does not  imply that S&P  believes the stock  to be an
attractive or appropriate investment, nor is S&P in any way affiliated with  the
Series.  The S&P  MidCap was created  by S&P  to capture the  performance of the
stocks  that  fall  in  the  medium  capitalization  range.  S&P  screened   the
medium-capitalization  stocks candidacy population using the following criteria:
level  of  trading  activity,  or   liquidity;  market  value;  industry   group
representation;  and the level of controlling  interest. A limited percentage of
the S&P MidCap may include Canadian securities. No other foreign securities  are
eligible for inclusion.
    
 
   
The  Series  may  purchase  and sell  various  financial  instruments, including
financial futures contracts (such as index futures contracts) and options  (such
as  options on U.S. or foreign securities  or indices of such securities). These
instruments may be  used, for example,  to preserve  a return or  spread, or  to
facilitate  or substitute  for the sale  or purchase of  securities. The Series'
ability to use these instruments may be limited by market conditions, regulatory
limits and tax  considerations. See  "Futures Contracts and  Options on  Futures
Contracts"  and "Options" under the  caption "Investment Policies, Restrictions,
and Risks Applicable to More Than One  Series." The Series may not purchase  put
or  call  options that  are traded  on a  national stock  exchange in  an amount
exceeding 5% of its net assets.
    
 
   
The Series will  not invest  more than 15%  of the  value of its  net assets  in
illiquid  securities, including  time deposits and  repurchase agreements having
maturities longer than seven  (7) days. Securities  that have readily  available
market  quotations  are  not deemed  illiquid  for purposes  of  this limitation
(irrespective of  any legal  or  contractual restrictions  on resale).  See  the
Statement  of Additional  Information for  further discussion  of restricted and
illiquid securities.
    
 
   
SMALL CAP VALUE SERIES
    
 
   
The objective of Small Cap Value Series is capital appreciation. Small Cap Value
Series may be appropriate for investors  willing to make a long-term  investment
commitment  that involves above-average risk. The sub-adviser of Small Cap Value
Series is Berger  Associates, Inc.  ("Berger Associates")  which has  contracted
with  Perkins, Wolf, McDonnell  & Company (the  "Manager") to provide day-to-day
investment management for the Series.
    
 
   
Small Cap Value Series seeks to achieve its objective by investing primarily  in
common stocks of small companies that are out of favor with markets or that have
not  yet been discovered  by the broader investment  community and are therefore
believed to be undervalued. The Manager generally looks for companies with a low
price relative  to their  assets,  earnings, cash  flow or  business  franchise;
products  and  services  that give  them  a competitive  advantage;  and quality
balance sheets and strong management.
    
 
   
Small Cap Value Series  primarily invests in common  stocks of small  companies,
both  domestic and foreign,  and other securities with  equity features, such as
convertible securities,  preferred stocks,  warrants  and rights.  Under  normal
circumstances,  Small Cap Value Series will invest at least 65% of its assets in
equity securities  of companies  with  market capitalizations  of less  than  $1
billion  at the  time of initial  purchase. Market capitalization  is defined as
total current market value of a  company's outstanding common stock. The  Series
may also invest in common stocks of companies with
    
 
                                       16
<PAGE>
   
market  capitalizations in  excess of $1  billion, equity  securities other than
common stocks, government securities, short-term investments or other securities
described below, if the Manager believes these  are likely to be best suited  to
achieve the Series' objective. In addition, Small Cap Value Series may invest in
certain  securities with  unique risks, such  as special  situations and foreign
securities.
    
 
   
Small Cap Value Series' net asset value may be more volatile than that of  funds
primarily  invested in  stocks of larger  companies. Smaller  companies may pose
greater risk  due to  narrow product  lines, limited  financial resources,  less
depth  in management or a limited trading  market for their stocks. However, the
Manager's philosophy is to weigh  a security's downside risk before  considering
its upside potential, which may help provide an element of capital preservation.
The Series' investments are often focused in a small number of business sectors.
    
 
   
Small  Cap Value Series may increase its investment in government securities and
other  short-term,  interest-bearing  securities  without  limitation  when  the
Manager  believes  market  conditions warrant  a  temporary  defensive position,
during which period  it may  be more  difficult for  the Series  to achieve  its
investment objective.
    
 
   
SPECIAL  SITUATIONS. Small  Cap Value Series  may invest  in special situations,
that is, in  common stocks of  companies that have  recently experienced or  are
anticipated  to  experience  a  significant  change  in  structure,  management,
products or  services.  Examples  of  special  situations  are  companies  being
reorganized  or merged,  companies having unusual  new products,  or which enjoy
particular tax advantages, or companies that are run by new management or may be
probable takeover candidates. The opportunity  to invest in special  situations,
however,  is limited  and depends  in part on  the market's  assessment of these
issuers and their  circumstances. In  addition, stocks of  companies in  special
situations  may be  more volatile,  since the market  value of  these stocks may
decline if an anticipated event or benefit does not materialize.
    
 
   
UNSEASONED  ISSUERS.  Small  Cap  Value  Series  may  invest  in  securities  of
unseasoned  issuers. Unseasoned issuers are companies with a record of less than
three years' continuous operation, including the operations of any  predecessors
and  parents.  Investment decisions  for these  securities  may place  a greater
emphasis on current or planned product  lines and the reputation and  experience
of  the company's management and less  emphasis on fundamental valuation factors
than would  be the  case for  more mature  growth companies.  In addition,  many
unseasoned  issuers  may be  small  companies and  involve  the risks  and price
volatility associated with smaller companies.
    
 
   
FOREIGN SECURITIES.  Small Cap  Value Series  may invest  in both  domestic  and
foreign  securities. In selecting investments  in foreign securities, the Series
will consider the political and economic  conditions in a country, the  prospect
for  changes in the value of its currency  and the liquidity of an investment in
that country's securities  markets. See "Investment  Policies, Restrictions  and
Risks Applicable to More Than One Series--Investment in Foreign Securities."
    
 
   
HEDGING  TRANSACTIONS. Small Cap Value Series  is authorized to make limited use
of certain types of put and call  options, but only for the purpose of  hedging,
that  is, protecting  against the  risk of  market movements  that may adversely
affect the value of the Series' securities  or the price of securities that  the
Series  is  considering  purchasing.  Although a  hedging  transaction  may, for
example, partially  protect  the  Series  from  a decline  in  the  value  of  a
particular  security  or its  portfolio generally,  hedging  may also  limit the
Series' opportunity to profit  from favorable price movements,  and the cost  of
the  transaction  will  reduce  the  potential return  on  the  security  or the
portfolio. No more than 5% of Small Cap Value Series' net assets at the time  of
purchase may be utilized as premiums for options.
    
 
   
Small Cap Value Series may write covered call options, but only up to 10% of the
Series'  net assets. A call  option is considered covered  if the Series already
owns the security on which the option is  written, or, in the case of an  option
written  on a  securities index,  if the Series  owns a  portfolio of securities
believed  likely  to  substantially  replicate   movement  of  the  index.   See
"Investment  Objectives and  Policies--Options" in  the Statement  of Additional
Information for  additional detail  concerning  options and  the risks  of  such
transactions.
    
 
   
GLOBAL GROWTH SERIES
    
 
   
The  primary investment objective  of Global Growth  Series is long-term capital
appreciation. Current income through the receipt  of income such as interest  or
dividends  from  investments is  an incidental  objective. Global  Growth Series
seeks its objectives  primarily by  investing in  a global  portfolio of  equity
securities,  allocated  among  diverse  international  markets.  The  Series  is
designed  for  investors  who  wish  to  accept  the  risks  entailed  in   such
investments,  which  are  different  from  those  associated  with  a  portfolio
consisting entirely of U.S. securities. See "Investment Policies,  Restrictions,
and Risks Applicable to More Than One Series--Investment in Foreign Securities."
The  Series may invest in  any kind of equity  security including common stocks,
preferred stocks and warrants.
    
 
   
The Series is not required to maintain any particular geographic or currency mix
of its investments, nor is it required to maintain any particular proportion  of
equity securities, bonds, or other securities in its portfolio. However, in view
of  its investment objectives, the Series currently expects to invest its assets
primarily in equity  securities. Under  normal market  conditions Global  Growth
Series invests approximately 55% to 65% of its total assets in equity securities
in  established  growth  companies which  have  achieved a  record  of operating
earnings over the past five-year period. Such companies would usually be located
in the United States,  Canada, the United Kingdom,  Japan, Australia, and  other
Western  European  nations. These  companies  will also  have  paid or  have the
ability to  pay a  dividend. Established  growth companies  typically have  less
sensitivity  to general economic trends, tend  to generate above average returns
on  invested  capital,  and  have  leadership  positions  in  their   respective
industries.  When selecting  securities of non-U.S.  issuers, Advisers considers
additional factors  related to  the country  of the  non-U.S. issuer,  including
foreign  currency  exchange,  the political  stability  of the  country  of such
non-U.S. issuer, foreign regulations, and settlement practices. See  "Investment
Policies, Restrictions, and Risks Applicable to More Than One Series--Investment
in Foreign Securities."
    
 
   
Global  Growth Series may invest up to  45% of its equity securities in emerging
growth companies and in  global emerging markets. For  a discussion of  emerging
growth companies and global emerging markets, see "Aggressive Growth Series" and
"Investment  Policies,  Restrictions,  and  Risks Applicable  to  More  Than One
Series--Emerging Markets,"  respectively. Global  Growth Series  has no  minimum
size  requirements for  the emerging growth  companies in which  it will invest.
Advisers believes  that  investments in  equity  securities in  emerging  growth
companies  and in global emerging markets  offer the opportunity for significant
long-term investment returns.
    
 
   
Global Growth Series may invest without  limit in investment grade fixed  income
securities  of U.S.  and non-U.S. issuers  when the total  return available from
investments in such securities  may equal or exceed  the total return  available
from  investments in equity securities. The Series  may invest all of its assets
in high quality  debt securities  of U.S. and  non-U.S. issuers,  may hold  cash
(U.S.  dollars,  foreign  currencies, or  multinational  currency  units) and/or
invest any portion or all of its assets in high quality money market instruments
as temporary defensive strategies. High  quality debt securities are  securities
rated within one of the two highest ratings
    
 
                                       17
<PAGE>
   
categories  of Moody's (Aaa and Aa) or of  S&P (AAA and AA), or comparably rated
by another nationally recognized rating agency, or, if unrated, determined to be
of comparable quality by Advisers.
    
 
   
The debt  obligations  in which  the  Series may  invest  include a  variety  of
government  bonds and corporate  debt obligations. Global  Growth Series expects
that a large portion of  its debt investments will  be high quality, as  defined
above,  government or  corporate bonds.  Government bonds  which the  Series may
purchase include debt obligations issued or guaranteed by the U.S. government or
foreign governments (including foreign states, provinces, or municipalities)  or
their   agencies,  authorities  or  instrumentalities  and  also  includes  debt
obligations issued by  supranational entities, which  entities are organized  or
supported  by several national governments, such as the World Bank and the Asian
Development Bank. Other debt obligations  which the Series may purchase  include
corporate  bonds  and debt  obligations  convertible into  equity  securities or
having attached warrants or rights to purchase equity securities. The Series may
also purchase securities that are issued  by the government or a corporation  or
financial  institution of one nation but  denominated in the currency of another
nation (or a multinational currency  unit). No more than  5% of the Series'  net
assets  may  be invested  in a  debt security  rated  lower than  Baa or  BBB. A
description of the Moody's and S&P ratings is included in the Appendix.
    
 
   
The Series  may also  use forward  currency contracts  and options  and  futures
strategies  which involve  certain investment  risks and  transaction costs. See
"Investment Policies,  Restrictions,  and  Risks Applicable  to  More  Than  One
Series."
    
 
   
LARGE CAP GROWTH SERIES
    
 
   
The  investment  objective of  Large Cap  Growth Series  is long-term  growth of
capital. The  Series invests  predominantly in  equity securities  of a  limited
number of large, carefully selected, high-quality U.S. companies that are judged
likely to achieve superior earnings growth. Normally, about 40 companies will be
represented  in  Large Cap  Growth Series'  portfolio, with  the 25  most highly
regarded of  these  companies  usually constituting  approximately  70%  of  the
Series'  net assets. Large Cap  Growth Series is thus  atypical from most equity
funds in  its focus  on  a relatively  small  number of  intensively  researched
companies  and  is  designed  for  those seeking  growth  of  capital  with less
volatility over time than that associated with investment in smaller companies.
    
 
   
The Series normally  invests at  least 85%  of its  total assets  in the  equity
securities  of U.S.  companies. These are  companies (i)  organized under United
States law that have their principal office  in the United States, and (ii)  the
equity securities of which are traded principally in the United States.
    
 
   
The  sub-adviser to Large Cap Growth  Series is Alliance Capital Management L.P.
("Alliance"). Alliance relies heavily upon the fundamental analysis and research
of its large internal staff, which generally follows a primary research universe
of more  than  600 companies  that  have strong  management,  superior  industry
positions,  excellent balance sheets and  superior earnings growth prospects. An
emphasis is placed  on identifying companies  whose substantially above  average
prospective earnings growth is not fully reflected in current market valuations.
    
 
   
In managing Large Cap Growth Series, Alliance seeks to utilize market volatility
judiciously (assuming no change in company fundamentals), striving to capitalize
on  apparently  unwarranted price  fluctuations,  both to  purchase  or increase
positions on weakness  and to  sell or  reduce overpriced  holdings. The  Series
normally will be fully invested and will not take significant cash positions for
market  timing purposes.  During market declines,  while adding  to positions in
favored stocks,  the  Series  may become  somewhat  more  aggressive,  gradually
reducing  the number of  companies represented in  its portfolio. Conversely, in
rising markets, while reducing or eliminating fully valued positions, Large  Cap
Growth  Series may become  somewhat more conservative,  gradually increasing the
number of companies represented  in its portfolio. Alliance  thus seeks to  gain
positive  returns in good markets while  providing some measure of protection in
poor markets.
    
 
   
Alliance expects the average market  capitalization of companies represented  in
the  Series' portfolio normally to be in the range, or in excess, of the average
market capitalization of companies comprising the S&P 500.
    
 
   
Large Cap Growth  Series may also:  (1) invest up  to 20% of  its net assets  in
convertible  securities  of  companies  whose  common  stocks  are  eligible for
purchase; (2) invest  up to  5% of  its net assets  in rights  or warrants;  (3)
invest  up to  15% of its  total assets  in securities of  foreign issuers whose
common stocks are eligible for  purchase; (4) purchase and sell  exchange-traded
index  options  and  stock  index  futures  contracts;  and  (5)  write  covered
exchange-traded call options on common stocks, unless as a result, the amount of
its securities subject to call options would exceed 15% of its total assets, and
purchase and sell exchange-traded call and put options on common stocks  written
by  others, but  the total  cost of  all options  held by  the Series (including
exchange-traded index  options) may  not exceed  10% of  its total  assets.  For
additional  information  on  the use,  risks  and  costs of  these  policies and
practices see "Investment Policies, Restrictions,  and Risks Applicable to  More
Than  One Series" and "General Risks to  Consider." Large Cap Growth Series will
not write put options.
    
 
   
GROWTH STOCK SERIES
    
 
   
The primary investment objective of Growth  Stock Series is short and  long-term
capital  appreciation.  Current  income  through  the  receipt  of  interest  or
dividends from  investments will  merely be  incidental to  the efforts  of  the
Series  in pursuing its objective. Growth  Stock Series will generally invest in
mid cap companies representing a diversified cross section of U.S. industry. For
purposes  of  this  Series,   mid  cap  companies  are   those  with  a   market
capitalization between $1 billion and $5 billion at the time of purchase.
    
 
   
Growth  Stock  Series  will  invest primarily  in  common  stocks  or securities
convertible into common  stocks. Occasionally, however,  limited amounts may  be
invested in other types of securities (such as nonconvertible preferred and debt
securities).  In periods  when a  more defensive  position is  deemed warranted,
Growth Stock Series may invest in  high grade preferred stocks, bonds and  other
fixed  income securities (whether or not  convertible into or carrying rights to
purchase common  stock) or  retain cash,  all without  limitation. Growth  Stock
Series  may also invest in repurchase agreements, listed and unlisted securities
and up to 10% of  its total assets in  foreign securities. Investing in  foreign
securities  may  result  in greater  risk  than  that incurred  in  investing in
domestic securities. For a discussion of certain considerations of investing  in
foreign  securities see "Investment Policies, Restrictions, and Risks Applicable
to More Than One Series-- Investment in Foreign Securities."
    
 
AGGRESSIVE GROWTH SERIES
 
   
The investment  objective  of  Aggressive Growth  Series  is  maximum  long-term
capital  appreciation. The Series attempts to achieve its objective by investing
primarily in equity  securities of  small and  medium sized  companies that  are
early  in  their life  cycles,  but which  have  the potential  to  become major
enterprises ("emerging  growth companies"),  and in  more established  companies
that  have the potential for above-average capital growth. Dividend and interest
income from securities is incidental to the Series' investment objective.
    
 
   
Aggressive Growth Series' policy  is to invest,  under normal circumstances,  at
least   65%  of   its  total  assets   in  common  stocks   of  emerging  growth
    
 
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<PAGE>
   
companies and equity  securities of  more established companies  whose rates  of
earnings  growth are expected  to accelerate because of  special factors such as
new products,  changes  in  consumer  demand,  basic  changes  in  the  economic
environment, or rejuvenated management. Emerging growth companies generally have
annual  gross revenues ranging from $10 million to $1 billion, would be expected
to show earnings  growth over time  that is well  above the growth  rate of  the
overall  economy and the rate of inflation, and would have products, management,
and market  opportunities which  are  usually necessary  to become  more  widely
recognized as growth companies.
    
 
   
While  Aggressive Growth Series will invest  primarily in common stocks, it may,
to a limited  extent, seek  appreciation in other  types of  securities such  as
convertible  securities and  warrants when  relative values  make such purchases
appear attractive.  The Series  may  also write  covered  call and  secured  put
options  and purchase call and put options on securities and stock indexes in an
effort to increase total return and  for hedging purposes, and may purchase  and
sell  stock index  futures contracts and  options thereon  for hedging purposes.
(See "Investment Policies, Restrictions, and  Risks Applicable to More Than  One
Series--Options, Futures, and Currency Strategies.")
    
 
   
The  nature of investing in emerging growth companies involves greater risk than
is customarily  associated  with  investments  in  more  established  companies.
Emerging  growth companies may have limited  product lines, markets or financial
resources, and  they  may  be  dependent on  a  limited  management  group.  The
securities  of emerging growth  companies may have  limited market stability and
may be subject  to more abrupt  or erratic market  movements than securities  of
larger,  more established companies or the market averages in general. Shares of
Aggressive Growth Series, therefore, are subject to greater fluctuation in value
than shares of  a conservative equity  fund or  of a growth  fund which  invests
entirely in more established growth stocks.
    
 
   
Aggressive  Growth  Series may  also invest  up to  10% of  its total  assets in
foreign securities. Investing in foreign  securities may result in greater  risk
than  that incurred  in investing  in domestic  securities. For  a discussion of
certain considerations  of  investing  in foreign  securities,  see  "Investment
Policies,   Restrictions,  and  Risks  Applicable  to  More  Than  One  Series--
Investment in Foreign Securities."
    
 
   
When Advisers considers  a more  defensive posture appropriate,  the Series  may
invest  without  limitation in  commercial paper,  obligations  of banks  or the
United States government and other high quality, short-term debt instruments.
    
 
INVESTMENT POLICIES, RESTRICTIONS, AND RISKS APPLICABLE TO MORE THAN ONE SERIES
 
   
EMERGING MARKETS. Subject to  the restrictions set forth  above, each of  Global
Bond  Series, Global Asset Allocation Series,  Small Cap Value Series, Large Cap
Growth Series and International  Stock Series may  invest without limitation  in
emerging  market countries.  Global Growth  Series may invest  up to  45% of its
equity securities in emerging market countries. High Yield Series may invest  up
to  10% of its total assets in emerging market countries. Global Bond Series may
invest up to 20% of its total assets in emerging market countries. Many emerging
market countries have  experienced substantial  or, in  some periods,  extremely
high  rates of  inflation for  many years.  Inflation and  rapid fluctuations in
inflation rates  have  had and  may  continue to  have  adverse effects  on  the
economies and securities markets of certain of these countries. In an attempt to
control  inflation,  wage  and  price  controls  have  been  imposed  in certain
countries. In  many  cases, emerging  market  countries are  among  the  world's
largest   debtors  to  commercial   banks,  foreign  governments,  international
financial organizations and other financial  institutions. In recent years,  the
governments  of  some  of  these  countries  have  encountered  difficulties  in
servicing their external debt obligations, which has led to defaults on  certain
obligations and the restructuring of certain indebtedness.
    
 
As  used  in  this Prospectus,  emerging  markets are  countries  categorized as
emerging markets by  the International Financial  Corporation, the World  Bank's
private  sector  division. Such  countries may  include but  are not  limited to
Singapore, Indonesia, China, India and certain Latin American countries such  as
Mexico,  Argentina,  Chile and  Brazil.  Such markets  tend  to be  in  the less
economically developed regions of the world. General characteristics of emerging
market countries  also include  lower  degrees of  political stability,  a  high
demand  for capital  investment, a high  dependence on export  markets for their
major industries, a need  to develop basic  economic infrastructures, and  rapid
economic growth.
 
   
FOREIGN  CURRENCY  FORWARD EXCHANGE  CONTRACTS. Global  Bond Series,  High Yield
Series, Global Asset Allocation  Series, Value Series,  Growth & Income  Series,
Blue  Chip Stock Series, International Stock Series, Mid Cap Stock Series, Small
Cap Value Series, Global Growth Series,  Large Cap Growth Series and  Aggressive
Growth  Series may purchase or sell  foreign currency forward exchange contracts
("forward contracts") to attempt  to minimize the risk  from adverse changes  in
the  relationship between the various currencies in which each Series invests. A
forward contract is an obligation to purchase or sell a specific currency for an
agreed price  at a  future date.  The contract  is individually  negotiated  and
privately  traded by currency traders and their customers. Each Series may enter
into a forward contract,  for example, when  it enters into  a contract for  the
purchase  or sale of  a security denominated  in a foreign  currency in order to
"lock in"  the price  of  the security  ("transaction  hedge") in  a  particular
currency.  Additionally, when  a Series  believes that  a foreign  currency (for
example, the British pound) may suffer  a decline against any other currency  or
currencies  in the Series  (for example, the  U.S. dollar), it  may enter into a
forward sale contract  to sell  an amount of  the foreign  currency expected  to
decline  (the British pound) that  approximates the value of  some or all of the
Series' investment securities denominated in such foreign currency (the  British
pound)  (a "position hedge").  In such cases,  the Series also  may enter into a
forward sale contract to sell a foreign  currency for a fixed amount in  another
currency  (other than the U.S. dollar) where  the Series believes that the value
of the currency  to be  sold pursuant  to the  forward sale  contract will  fall
whenever  there is a decline  in the value of the  currency (other than the U.S.
dollar) in which certain portfolio securities  of the Series are denominated  (a
"cross-hedge").
    
 
Under  certain conditions, Securities and Exchange Commission (the "Commission")
guidelines require investment companies to set  aside cash or any security  that
is  not  considered restricted  or  illiquid in  a  segregated account  to cover
forward contracts. As required by Commission guidelines, any Series that has the
ability to enter into a forward contract for an essentially speculative  purpose
will,  upon entering  into such  a transaction,  segregate assets  to cover such
forward contracts.  At the  present time,  only the  Global Bond,  Global  Asset
Allocation  and International  Stock Series  may enter  into speculative forward
contracts. A  speculative forward  contract  is one  which, unlike  the  hedging
situations  defined above, does not have an underlying position in a security or
securities. The  Series will  not segregate  assets to  cover forward  contracts
entered into for hedging purposes.
 
Although  forward contracts will  be used primarily to  protect such Series from
adverse currency movements, they also involve the risk that anticipated currency
movements will not be accurately predicted.
 
   
FUTURES CONTRACTS  AND OPTIONS  ON  FUTURES CONTRACTS.  Certain of  Global  Bond
Series,  High Yield Series, Global Asset Allocation Series, Value Series, Growth
& Income Series,  Blue Chip Stock  Series, International Stock  Series, Mid  Cap
Stock    Series,    Small   Cap    Value    Series,   Global    Growth   Series,
    
 
                                       19
<PAGE>
   
Large Cap Growth Series  and Aggressive Growth Series  may enter into  contracts
for the purchase or sale for future delivery of securities or contracts based on
financial indices including any index of U.S. government securities or corporate
debt  securities ("futures contracts")  and may purchase and  write put and call
options to  buy or  sell  futures contracts  ("options on  futures  contracts").
Global  Bond Series, Global Asset Allocation Series, International Stock Series,
Mid Cap Stock Series and Global  Growth Series may enter into futures  contracts
for  the purchase or  sale for future  delivery of fixed  income securities, and
Blue Chip Stock Series, Small Cap  Value Series, Global Growth Series and  Large
Cap  Growth Series may enter into futures contracts for the purchase or sale for
future delivery of  equity securities.  Global Bond Series,  High Yield  Series,
Global  Asset  Allocation Series,  Blue Chip  Stock Series,  International Stock
Series and Global Growth Series may enter into interest rate futures  contracts.
Global  Bond  Series, Global  Asset Allocation  Series,  Value Series,  Growth &
Income Series,  S&P 500  Series,  Blue Chip  Stock Series,  International  Stock
Series,  Small Cap Value  Series, Large Cap Growth  Series and Aggressive Growth
Series may enter into  stock index futures contracts.  Global Bond Series,  High
Yield   Series,  Global  Asset  Allocation   Series,  Blue  Chip  Stock  Series,
International Stock Series, Mid Cap Stock Series, Small Cap Value Series, Global
Growth Series, Large Cap  Growth Series and Aggressive  Growth Series may  enter
into  contracts  for  the  purchase  or  sale  for  future  delivery  of foreign
currencies.  A  "sale"  of  a  futures  contract  means  the  undertaking  of  a
contractual  obligation to deliver  the securities or  foreign currencies called
for by the contract at a specified price on a specified date. A "purchase" of  a
futures  contract means the  undertaking of a  contractual obligation to acquire
the securities or foreign currencies called  for by the contract at a  specified
price  on a  specified date.  The purchaser  of a  futures contract  on an index
agrees to take or  make delivery of  an amount of cash  equal to the  difference
between  a specified dollar multiple of the value of the index on the expiration
date of  the contract  ("current contract  value") and  the price  at which  the
contract  was  originally  struck.  No  physical  delivery  of  the fixed-income
securities underlying  the index  is made.  At the  time a  futures contract  is
purchased  or  sold, a  Series must  allocate  cash or  securities as  a deposit
payment based on a percentage of  a contract's face value. The futures  contract
is  valued  daily  thereafter  and  the Series  may  be  required  to contribute
additional cash or securities that reflects any decline in the contract's value.
These investment techniques will  be used for a  variety of purposes,  including
hedging  against  anticipated future  changes in  interest rates  that otherwise
might either adversely affect the value of the portfolio securities of a  Series
or adversely affect the prices of securities or foreign currencies that a Series
intends to purchase at a later date.
    
 
   
Global  Bond  Series, Global  Asset  Allocation Series  and  International Stock
Series may purchase  and write "covered"  put and  call options to  buy or  sell
futures  contracts. High  Yield Series,  Small Cap  Value Series,  Global Growth
Series and Aggressive Growth  Series may write only  "covered" call options.  An
option  written on  a security  or currency  is "covered"  when, so  long as the
Series is  obligated  under the  option,  it  owns the  underlying  security  or
currency.  High Yield Series,  Small Cap Value Series,  Global Growth Series and
Aggressive Growth  Series each  will  "cover" options  on futures  contracts  it
writes  by  maintaining in  a  segregated account  either  marketable securities
which, in Advisers' judgment, correlate to the underlying futures contract or an
amount of cash  or any security  that is not  considered restricted or  illiquid
equal  in value  to the  amount such Series  would be  required to  pay were the
option exercised.
    
 
Transactions in  futures  contracts,  options  on  futures  contracts,  currency
contracts  and certain options  for hedging purposes  involve certain risks. See
"General Risks to Consider--Options, Futures, and Currency Strategies."
 
   
OPTIONS. Options (a type of potentially high risk derivative) give the  investor
the  right, but not the  obligation, to buy or sell  an asset at a predetermined
price in  the  future. Global  Bond  Series,  High Yield  Series,  Global  Asset
Allocation Series, Value Series, Growth & Income Series, Blue Chip Stock Series,
International  Stock Series, Small Cap Value Series, Global Growth Series, Large
Cap Growth  Series and  Aggressive  Growth Series  may  write call  options  and
purchase  put and call  options on equity  and fixed income  securities to hedge
against the risk of fluctuations in the prices of securities held by such Series
or which Advisers (or the sub-adviser, if applicable) intends to include in such
Series. Global  Bond Series,  Global Asset  Allocation Series,  Blue Chip  Stock
Series  and International Stock Series may  also purchase, write or sell options
on securities  or  financial indices  for  other than  hedging  purposes,  which
involves greater risk.
    
 
   
OPTIONS  ON FOREIGN  CURRENCIES. Global Bond  Series, High  Yield Series, Global
Asset Allocation Series,  Blue Chip  Stock Series,  International Stock  Series,
Global Growth Series and Aggressive Growth Series may purchase and write put and
call  options  on  foreign  currencies for  the  purpose  of  protecting against
declines in the value of  foreign currency denominated portfolio securities  and
against  increases in the cost of such securities to be acquired. As in the case
of other  kinds of  options, however,  the writing  of an  option on  a  foreign
currency  constitutes only  a partial  hedge, up  to the  amount of  the premium
received. A Series could be required  to purchase or sell foreign currencies  at
disadvantageous  exchange rates,  thereby incurring  losses. The  purchase of an
option  on  a  foreign  currency  may  constitute  an  effective  hedge  against
fluctuations  in exchange rates although, in the event of rate movements adverse
to a Series'  position, it may  forfeit the  entire amount of  the premium  plus
related  transaction  costs.  Options on  foreign  currencies to  be  written or
purchased  by  a   Series  are  traded   on  U.S.  and   foreign  exchanges   or
over-the-counter.
    
 
   
LIMITATIONS  ON INVESTMENTS IN DERIVATIVE INSTRUMENTS ON SECURITIES, OPTIONS AND
FUTURES CONTRACTS.  Global  Bond  Series, Global  Asset  Allocation  Series  and
International  Stock Series will not enter  into any options, futures or forward
contract transactions if immediately thereafter the amount of premiums paid  for
all  options, initial margin deposits on all futures contracts and/or options on
futures contracts, and  collateral deposited with  respect to forward  contracts
held by or entered into by such Series would exceed 5% of the value of the total
assets  of such Series. This restriction  does not apply to securities purchased
on a  when-issued, delayed  delivery or  forward commitment  basis as  described
under  "Investment Policies, Restrictions, and Risks Applicable to More Than One
Series--Delayed Delivery Transactions."
    
 
   
High Yield Series, Value  Series, Growth & Income  Series, Global Growth  Series
and Aggressive Growth Series have adopted two percentage restrictions on the use
of  options, futures, and forward contracts.  The first restriction is that each
such Series  will not  enter  into any  options,  futures, or  forward  contract
transactions  if  immediately thereafter  the amount  of  premiums paid  for all
options, initial  margin deposits  on all  futures contracts  and/or options  on
futures  contracts, and collateral  deposited with respect  to forward contracts
held by or entered into by the Series would exceed 5% of the value of the  total
assets  of the Series. The second restriction is that the aggregate value of the
Series' assets covering, subject to, or  committed to all options, futures,  and
forward  contracts will not exceed  20% of the value of  the total assets of the
Series. These  two  restrictions do  not  apply  to securities  purchased  on  a
when-issued,  delayed delivery, or  forward commitment basis  as described under
"Delayed Delivery Transactions." However, each such Series intends to limit  its
investment  in futures during the coming year so that the aggregate value of the
Series assets subject to futures  contracts will not exceed  5% of the value  of
its net assets.
    
 
FLOATING  AND VARIABLE  RATE INSTRUMENTS.  Certain of  the obligations  that the
Series may  purchase  have  a  floating  or  variable  rate  of  interest.  Such
 
                                       20
<PAGE>
obligations  bear interest at rates that are not fixed, but vary with changes in
specified market rates  or indices,  such as the  prime rate,  and at  specified
intervals.  Certain of these  obligations may carry a  demand feature that would
permit the  holder to  tender them  back to  the issuer  at par  value prior  to
maturity.  Each  Series  limits  its purchases  of  floating  and  variable rate
obligations to those of the same quality as it otherwise is allowed to purchase.
Advisers (or the sub-adviser,  if applicable) monitors on  an ongoing basis  the
ability  of an issuer  of a demand  instrument to pay  principal and interest on
demand. A Series' right to obtain payment  at par on a demand instrument can  be
affected  by  events occurring  between the  date such  Series elects  to demand
payment and the date payment is due that may affect the ability of the issuer of
the instrument to  make payment when  due, except when  such demand  instruments
permit  same-day  settlement. To  facilitate  settlement, these  same-day demand
instruments may be  held in book  entry form at  a bank other  than the  Series'
custodian,  subject to a  subcustodian agreement approved  by the Series between
the bank and the Series' custodian.
 
The floating and variable rate obligations that the Series may purchase  include
certificates of participation in obligations purchased from banks. A certificate
of  participation  gives  the Series  an  undivided interest  in  the underlying
obligations in the  proportion that  such Series'  interest bears  to the  total
principal   amount  of  such  obligations.   Certain  of  such  certificates  of
participation may carry a demand feature that would permit the holder to  tender
them  back to  the issuer  prior to  maturity. To  the extent  that floating and
variable rate instruments  without demand features  are not readily  marketable,
they will be subject to the investment restrictions pertaining to investments in
illiquid securities. See "Restricted or Illiquid Securities" below.
 
   
LETTERS  OF CREDIT.  Commercial paper  and other  short-term obligations  may be
backed by  irrevocable  letters  of  credit issued  by  banks  that  assume  the
obligation  for payment of principal and interest  in the event of default by an
issuer. Only banks, the securities of which, in the opinion of Advisers (or  the
sub-adviser,  if  applicable), are  of  investment quality  comparable  to other
permitted investments of such  Series, may be used  for letter of  credit-backed
investments.
    
 
   
REPURCHASE  AGREEMENTS. Each of the Series  may invest in repurchase agreements.
See "Investment Objectives and Policies--Repurchase Agreements" in the Statement
of Additional Information.
    
 
   
RESTRICTED OR  ILLIQUID  SECURITIES.  A  policy of  Money  Market  Series,  U.S.
Government Securities Series, Diversified Income Series, Asset Allocation Series
and  Growth Stock Series  which may not  be changed without  the approval of the
shareholders, is that each such Series may invest  up to 5% of the value of  its
total  assets in  securities which it  might not be  free to sell  to the public
without registration  of  such  securities  under the  Securities  Act  of  1933
(excluding  Rule 144A securities). However, this policy is further restricted by
a policy--which could be  changed without shareholder approval--which  prohibits
more  than an aggregate of  10% of each such  Series' assets from being invested
in: restricted securities (both debt and equity) or in equity securities of  any
issuer which are not readily marketable.
    
 
   
Global  Growth Series may invest up  to 10% of the value  of its total assets in
securities which are not registered under the applicable securities laws of  the
country  in which such securities are traded and for which no alternative market
is readily available (excluding Rule 144A securities). This policy is restricted
by a further policy  which could be  changed without shareholder  approval--that
prohibits  more than an  aggregate of 10%  of Global Growth  Series' assets from
being invested in (a) restricted securities (both debt and equity) or in  equity
securities  of  any  issuer which  are  not readily  marketable,  (b) repurchase
agreements with a  maturity of more  than seven days,  and (c)  over-the-counter
option and futures contracts.
    
 
   
A  policy of  each of the  Global Bond  Series, High Yield  Series, Global Asset
Allocation Series, Value Series, Growth &  Income Series, S&P 500 Index  Series,
Blue  Chip Stock Series, International Stock Series, Mid Cap Stock Series, Small
Cap Value Series, Large Cap Growth  Series and Aggressive Growth Series is  that
each  Series may invest  up to 15%  of its net  assets in all  forms of illiquid
investments, as  determined  pursuant  to  applicable  Securities  and  Exchange
Commission rules and regulations.
    
 
   
REAL  ESTATE OR REAL ESTATE INVESTMENT  TRUSTS. Diversified Income Series, Asset
Allocation Series, Value  Series, Growth  & Income  Series and  Small Cap  Value
Series  may  invest  in real  estate  investment trusts  ("REITs"),  real estate
development and real estate  operating companies and  other real estate  related
businesses.  Growth & Income Series and  Value Series currently intend to invest
the REIT portion of  its portfolio primarily in  equity REITs, which are  trusts
that  sell shares to investors and use the  proceeds to invest in real estate or
interests in  real estate.  A REIT  may focus  on particular  projects, such  as
apartment  complexes or  shopping centers,  or geographic  regions, such  as the
Southeastern United States, or both. Debt REITs invest in obligations secured by
mortgages on real property or interests in real property.
    
 
Value Series has also  adopted a nonfundamental  investment restriction that  it
may  invest  up to  10% of  its total  assets in  Real Estate  Investment Trusts
(REITs) and will invest only in REITs that are publicly distributed.
 
   
The Series' investments in real estate  securities may be subject to certain  of
the  same risks associated with the direct ownership of real estate. These risks
include: declines in  the value  of real estate;  risks related  to general  and
local  economic conditions; overbuilding and  competition; increases in property
taxes and  operating expenses;  and variations  in rental  income. In  addition,
REITs may not be diversified. REITs are subject to the possibility of failing to
qualify  for tax-free pass-through of income under the Internal Revenue Code and
failing to maintain exemption  from the 1940 Act.  Also, REITs may be  dependent
upon  management skill  and may  be subject to  the risks  of obtaining adequate
financing for projects on favorable terms.
    
 
   
BORROWINGS. Each Series may  borrow money from banks  as a temporary measure  to
facilitate redemptions. As a policy which may not be changed without shareholder
approval, however, borrowings by Money Market Series, U.S. Government Securities
Series,  Diversified Income  Series, Asset  Allocation Series,  and Growth Stock
Series may not exceed 10% (5% for Large  Cap Growth Series) of the value of  the
total assets of each such Series.
    
 
   
Borrowings  by Global  Bond Series, High  Yield Series,  Global Asset Allocation
Series, Value Series, Growth  & Income Series, S&P  500 Index Series, Blue  Chip
Stock  Series, International Stock Series, Mid Cap Stock Series, Small Cap Value
Series, Global  Growth Series  and Aggressive  Growth Series  through banks  and
"roll"  transactions will not  exceed 33 1/3%  of the total  assets of each such
Series. As  an operating  policy, Blue  Chip Stock  Series may  not transfer  as
collateral  any  portfolio securities  except  as necessary  in  connection with
permissible borrowings or investments,  and then such  transfers may not  exceed
25%  of such  Series' total assets.  No additional investment  securities may be
purchased  by  a   Series  whose  outstanding   borrowings,  (including   "roll"
transactions in the case of the Series in this paragraph) exceed 5% of the value
of  such  Series' total  assets.  If market  fluctuations  in the  value  of the
portfolio holdings of the  Series in this paragraph  or other factors cause  the
ratio of such Series' total assets to outstanding borrowings to fall below 300%,
within three days (excluding Sundays and holidays) of such event such Series may
be  required to  sell portfolio securities  to restore the  300% asset coverage,
even though from an investment  standpoint such sales might be  disadvantageous.
Interest paid on borrowings will not be available for investment.
    
 
                                       21
<PAGE>
   
ZERO  COUPON OBLIGATIONS. U.S. Government  Securities Series, Diversified Income
Series, Global Bond Series, High  Yield Series, Global Asset Allocation  Series,
Asset Allocation Series, International Stock Series and Global Growth Series may
invest  in  zero coupon  obligations of  the  government and  corporate issuers,
including  rights  to   "stripped"  coupon  and   principal  payments.   Certain
obligations  are "stripped"  of their  coupons, and  the rights  to receive each
coupon payment and the principal payment  are sold as separate securities.  Once
separated,  each coupon as  well as the principal  amount represents a different
single-payment claim due from  the issuer of  the security. Each  single-payment
claim  (coupon or principal) is equivalent to  a zero coupon bond. A zero coupon
security pays no interest to its holder during its life, and its value  consists
of  the difference between its  face value at maturity  (the coupon or principal
amount), if held to maturity, or its market  price on the date of sale, if  sold
prior  to maturity, and its acquisition price (the discounted "present value" of
the payment to be received).
    
 
Certain zero coupon obligations  represent direct obligations  of the issuer  of
the  "stripped" coupon and principal payments. Other zero coupon obligations are
securities issued  by financial  institutions which  constitute a  proportionate
ownership  of an underlying pool of stripped coupon or principal payments. These
Series may  invest in  either type  of zero  coupon obligation.  The  investment
policies  and restrictions applicable to  corporate and government securities in
the Series  shall  apply equally  to  the  Series' investments  in  zero  coupon
securities (including, for example, minimum corporate bond ratings).
 
VARIABLE  AMOUNT MASTER DEMAND NOTES. Each  Series may invest in variable amount
master demand  notes. These  instruments  are short-term,  unsecured  promissory
notes  issued by corporations to finance short-term credit needs. They allow the
investment of  fluctuating amounts  by the  Series at  varying market  rates  of
interest  pursuant  to  arrangements  between the  Series,  as  lender,  and the
borrower. Variable  amount master  demand notes  permit a  series of  short-term
borrowings  under a single note. Both the lender and the borrower have the right
to reduce the amount of outstanding indebtedness at any time. Such notes provide
that the  interest  rate on  the  amount outstanding  varies  on a  daily  basis
depending  upon  a  stated  short-term interest  rate  barometer.  Advisers will
monitor the creditworthiness of the borrower throughout the term of the variable
master demand note. It is not generally contemplated that such instruments  will
be  traded and there is no secondary market for the notes. Typically, agreements
relating to  such notes  provide that  the lender  shall not  sell or  otherwise
transfer  the note without the borrower's  consent. Thus, variable amount master
demand notes may under certain circumstances be deemed illiquid assets. However,
such notes will  not be considered  illiquid where  the Series has  a "same  day
withdrawal  option," i.e.,  where it has  the unconditional right  to demand and
receive payment in full of the  principal amount of the amount then  outstanding
together with interest to the date of payment.
 
   
MUNICIPAL  SECURITIES.  U.S.  Government Securities  Series,  Diversified Income
Series and Asset Allocation Series  each may invest not  more than 20% of  their
total  assets in municipal securities during periods when such securities appear
to offer more attractive returns than taxable securities.
    
 
   
PAYMENT-IN-KIND  DEBENTURES.  U.S.  Government  Securities  Series,  Diversified
Income  Series, Global Bond Series, High  Yield Series, Asset Allocation Series,
Global Asset  Allocation Series  and International  Stock Series  may invest  in
debentures  the interest on  which may be  paid in other  securities rather than
cash ("PIKs").  Typically, during  a  specified term  prior to  the  debenture's
maturity,  the issuer of a  PIK may provide for the  option or the obligation to
make interest payments in debentures,  common stock or other instruments  (i.e.,
"in  kind" rather than in cash). The type of instrument in which interest may or
will be paid would be known by Fortis Series at the time of the investment.  The
investment  restrictions  regarding  corporate bond  quality  are  applicable to
investments in  PIKs by  such Series  as well  as to  the securities  which  may
constitute  interest payments on PIKs. While  PIKs generate income for generally
accepted accounting standards purposes, they do not generate cash flow and  thus
could  cause such Series to be forced  to liquidate securities at an inopportune
time in order to distribute cash, as required by the Internal Revenue Code.
    
 
MORTGAGE-RELATED  SECURITIES.  Each  Series   may  invest  in   mortgage-related
securities.   Mortgage-related  securities  are  securities  that,  directly  or
indirectly, represent a participation  in (or are secured  by and payable  from)
mortgage  loans on real property.  Mortgage-related securities may represent the
right to receive both principal and interest payments on underlying mortgages or
may represent the  right to receive  varying proportions of  such payments.  One
type of mortgage-related security includes certificates which represent pools of
mortgage  loans  assembled for  sale to  investors  by various  governmental and
private organizations. Another type  of mortgage-related security includes  debt
securities which are secured, directly or indirectly, by mortgages on commercial
or residential real estate.
 
Investments  in mortgage-related securities involve certain risks. In periods of
declining interest  rates,  prices of  fixed  income securities  tend  to  rise.
However,  during such  periods, the rate  of prepayment  of mortgages underlying
mortgage-related securities  tends  to  increase,  with  the  result  that  such
prepayments  must be reinvested at  lower rates. In addition,  the value of such
securities  may  fluctuate  in  response  to  the  market's  perception  of  the
creditworthiness  of  the issuers  of mortgage-related  securities owned  by the
Series. The ability  of the  issuer of mortgage-related  securities to  reinvest
favorably  in  underlying  mortgages  may  be  limited  by  prevailing  economic
conditions or  by government  regulation. Additionally,  although mortgages  and
mortgage-related  securities are generally supported  by some form of government
or private  guarantee  and/or insurance,  there  is no  assurance  that  private
guarantors or insurers will be able to meet their obligations.
 
   
CMOS AND MULTI-CLASS PASS-THROUGH SECURITIES. U.S. Government Securities Series,
Diversified  Income Series, Global Bond Series,  High Yield Series, Global Asset
Allocation Series, Asset  Allocation Series and  International Stock Series  may
invest  in CMOs.  CMOs are debt  instruments issued by  special purpose entities
which  are  secured  by  pools  of  mortgage  loans  or  other   mortgage-backed
securities.  Multi-class  pass-through  securities  are  interests  in  a  trust
composed of  mortgage loans  or other  mortgage-backed securities.  Payments  of
principal  and interest on  underlying collateral provide the  funds to pay debt
service  on  the  CMO  or  make  scheduled  distributions  on  the   multi-class
pass-through  security. Multi-class  pass-through securities,  CMOs, and classes
thereof (including those discussed below) are examples of the types of financial
instruments commonly referred to as derivatives.
    
 
In a CMO, a series of bonds or certificates is issued in multiple classes.  Each
class of CMOs, often referred to as a "tranche," is issued at a specified coupon
rate and has a stated maturity or final distribution date. Principal prepayments
on  collateral underlying a CMO may cause it to be retired substantially earlier
than the stated  maturities or  final distribution  dates. Interest  is paid  or
accrues on all classes of a CMO on a monthly, quarterly or semiannual basis. The
principal  and interest on  the underlying mortgages may  be allocated among the
several classes  of a  series of  a CMO  in many  ways. In  a common  structure,
payments  of principal, including  any principal prepayments,  on the underlying
mortgages are applied according to scheduled cash flow priorities to classes  of
the series of a CMO.
 
   
There  are many classes of CMOs. IOs entitle the holder to receive distributions
consisting solely  or primarily  of  all or  a portion  of  the interest  in  an
underlying  pool  of  mortgage loans  or  mortgage-backed  securities ("Mortgage
Assets"). POs entitle the holder  to receive distributions consisting solely  or
primarily  of  all  or  a  portion  of  the  principal  of  the  underlying pool
    
 
                                       22
<PAGE>
   
of Mortgage Assets. In addition, there are inverse floaters, which have a coupon
rate that moves in the reverse direction to an applicable index, and accrual (or
"Z") bonds, which are described below.
    
 
   
As to IOs, POs, inverse floaters, and accrual bonds, not more than 5% of the net
assets of  each of  the U.S.  Government Securities  Series, Diversified  Income
Series,  Global Bond Series, High Yield  Series, Global Asset Allocation Series,
Asset Allocation Series and International Stock  Series will be invested in  any
of  these items at any  one time and no  more than 10% of  the net assets of the
Series will be invested in all such  obligations at any one time. Not more  than
5% of the Global Growth Series' net assets collectively will be invested in such
obligations at any time.
    
 
Inverse  floating CMOs are typically more volatile than fixed or adjustable rate
tranches of CMOs. Investments in inverse floating CMOs would be purchased by the
Series to attempt to  protect against a  reduction in the  income earned on  the
Series  investments due  to a  decline in  interest rates.  The Series  would be
adversely affected by the purchase of such  CMOs in the event of an increase  in
interest  rates since  the coupon rate  thereon will decrease  as interest rates
increase, and, like other mortgage-backed securities, the value will decrease as
interest rates increase.
 
The cash flows and yields  on IO and PO classes  are extremely sensitive to  the
rate  of principal payment  (including prepayments) on  the Mortgage Assets. For
example, a rapid or slow rate of principal payments may have a material  adverse
effect  on the yield to maturity of  IOs or POs, respectively. If the underlying
Mortgage Assets experience  greater than anticipated  prepayments of  principal,
the  holder of an IO may incur substantial losses, even if the IO class is rated
AAA. Conversely, if  the underlying  Mortgage Assets experience  is slower  than
anticipated  prepayments of principal, the yield and market value for the holder
of a PO will be affected more severely than would be the case with a traditional
Mortgage Backed Security.
 
However, if interest  rates were  expected to  rise, the  value of  an IO  might
increase  and may partially offset other bond  value declines, and if rates were
expected to fall, the inclusion of POs could balance lower reinvestment rates.
 
An accrual of "Z" bond holder is not entitled to receive cash payments until one
or more other classes  of the CMO have  been paid in full  from payments on  the
mortgage  loans underlying the CMO. During the period in which cash payments are
not being made on the Z tranche, interest  accrues on the Z tranche at a  stated
rate, and this accrued interest is added to the amount of principal which is due
to  the holder of the Z tranche. After the other classes have been paid in full,
cash payments  are  made  on  the  Z  tranche  until  its  principal  (including
previously  accrued interest which  was added to  principal, as described above)
and accrued interest at the stated rate  have been paid in full. Generally,  the
date  upon which cash  payments begin to be  made on a Z  tranche depends on the
rate at which the mortgage loans underlying  the CMO are prepaid, with a  faster
prepayment  rate resulting in an earlier commencement  of cash payments on the Z
tranche. Like a zero coupon bond, during  its accrual period the Z tranche of  a
CMO  has the advantage of eliminating  the risk of reinvesting interest payments
at lower rates during a period of  declining market interest rates. At the  same
time, however, and also like a zero coupon bond, the market value of a Z tranche
can  be expected to fluctuate more widely  with changes in market interest rates
than would the market value of a tranche which pays interest currently.  Changes
in  market interest rates also can be  expected to influence prepayment rates on
the mortgage loans underlying the CMO of which  a Z tranche is a part. As  noted
above,  such changes  in prepayment  rates will  affect the  date at  which cash
payments begin to be made on a Z tranche, and therefore also will influence  its
market value.
 
   
SHORT-TERM  TRADING. Money Market Series,  U.S. Government Securities Series and
Asset Allocation Series intend to use short-term trading of their securities  as
a  means of managing their portfolios to achieve their investment objectives. As
used herein, "short-term trading" means selling securities held for a relatively
brief period of time, usually less than three months. Short-term trading will be
used by the Series primarily in two situations:
    
 
    (a) MARKET DEVELOPMENTS.  A security may  be sold to  avoid depreciation  in
    what  Advisers  anticipates will  be a  market decline  (a rise  in interest
    rates), or a security may be purchased  in anticipation of a market rise  (a
    decline in interest rates) and later sold; and
 
    (b)  YIELD  DISPARITIES. A  security  may be  sold  and another  security of
    comparable quality purchased  at approximately  the same time,  in order  to
    take  advantage of  what Advisers believes  is a temporary  disparity in the
    normal yield relationship between the two securities (a yield disparity).
 
Short-term trading techniques will be used principally in connection with higher
quality, nonconvertible  debt  securities, which  are  often better  suited  for
short-term trading because the market in such securities is generally of greater
depth  and offers greater liquidity than the  market in debt securities of lower
quality.
 
   
Each of  Money  Market  Series,  U.S. Government  Securities  Series  and  Asset
Allocation  Series  will  engage  in  short-term  trading  if  it  believes  the
transactions, net  of  costs (including  commission,  if any),  will  result  in
improving  the  appreciation potential  or income  of its  investment portfolio.
Whether any improvement will be realized by short-term trading will depend  upon
the  ability  of  Advisers  to  evaluate  particular  securities  and anticipate
relevant market factors, including interest rate trends and variations from such
trends. Short-term trading  such as  that contemplated  by the  Series places  a
premium upon the ability of Advisers to obtain relevant information, to evaluate
it promptly, and to take advantage of its evaluations by completing transactions
on a favorable basis.
    
 
DELAYED  DELIVERY TRANSACTIONS. All Series except Money Market Series and Growth
Stock Series  may purchase  securities on  a "when-issued"  or delayed  delivery
basis and purchase or sell securities on a "forward commitment" basis. When such
transactions  are negotiated, the price  is fixed at the  time the commitment is
made, but delivery and payment  for the securities take  place at a later  date.
Normally,  the settlement date  occurs within two  months after the transaction,
but delayed settlements  beyond two months  may be negotiated.  At the time  the
Series enters into a transaction on a when-issued or forward commitment basis, a
segregated  account consisting  of cash or  any security that  is not considered
restricted or  illiquid,  equal to  the  value  of the  when-issued  or  forward
commitment  securities will be established and maintained with the custodian and
will be marked to the market daily.  During the period between a commitment  and
settlement, no payment is made for the securities and, thus, no interest accrues
to  the purchaser from the  transaction. If the Series  disposes of the right to
acquire a when-issued security prior to its acquisition or disposes of its right
to deliver or receive against a forward commitment, it can incur a gain or  loss
due  to  market fluctuation.  The use  of  when-issued transactions  and forward
commitments enables the Series to hedge against anticipated changes in  interest
rates  and prices. The Series may also  enter into such transactions to generate
incremental income. In some instances, the third-party seller of when-issued  or
forward commitment securities may determine prior to the settlement date that it
will be unable or unwilling to meet its existing transaction commitments without
borrowing securities. If advantageous from a yield perspective, the above Series
may,  in that event, agree to resell  its purchase commitment to the third-party
seller at the current market  price on the date  of sale and concurrently  enter
into  another purchase  commitment for  such securities at  a later  date. As an
inducement for the Series to "roll over" its purchase commitment, the Series may
receive a negotiated fee.
 
                                       23
<PAGE>
The purchase  of  securities on  a  when-issued, delayed  delivery,  or  forward
commitment  basis exposes the Series to risk because the securities may decrease
in value  prior  to their  delivery.  Purchasing securities  on  a  when-issued,
delayed  delivery, or forward commitment basis involves the additional risk that
the return available in the market when the delivery takes place will be  higher
than  that  obtained in  the  transaction itself.  These  risks could  result in
increased volatility  of the  Series' net  asset value  to the  extent that  the
Series  purchases  securities on  a  when-issued, delayed  delivery,  or forward
commitment basis while remaining substantially  fully invested. There is also  a
risk  that the securities may not be delivered or that a Series may incur a loss
or will  have lost  the opportunity  to invest  the amount  set aside  for  such
transaction in the segregated asset account. As to each Series, no more than 20%
of  its net assets may be invested  in when-issued, delayed delivery, or forward
commitment transactions, and of  such 20%, no more  than one-half (i.e., 10%  of
its  net assets)  may be invested  in when-issued, delayed  delivery, or forward
commitment transactions without the  intention of actually acquiring  securities
(i.e., dollar rolls).
 
   
SECURITIES  LENDING.  Global  Bond  Series,  High  Yield  Series,  Global  Asset
Allocation Series, Value Series, Growth &  Income Series, S&P 500 Index  Series,
Blue  Chip Stock Series, International Stock Series, Mid Cap Stock Series, Small
Cap Value Series, Global Growth Series,  Large Cap Growth Series and  Aggressive
Growth  Series are  authorized to  make loans  of their  portfolio securities to
broker-dealers or to other institutional  investors. The borrower must  maintain
with  such  Series' custodian  collateral  consisting of  cash,  U.S. government
securities, or  other liquid,  high-grade fixed  income securities  equal to  at
least  100% of the value of the  borrowed securities, plus any accrued interest.
Such Series will receive any  interest paid on the  loaned securities and a  fee
and/or  a portion  of the  interest earned on  the collateral.  As a fundamental
policy, such  Series  will limit  their  loans  of portfolio  securities  to  an
aggregate  of 33 1/3% (except for Global Growth Series, with a 30% limit) of the
value of  its total  assets, measured  at the  time any  such loan  is made.  As
described  in this  Prospectus and  the Statement  of Additional  Information, a
certain percentage of a Series' assets will generally be invested in a described
fashion. These percentage  calculations will  exclude collateral  received by  a
Series in connection with securities lending.
    
 
The  risks in lending portfolio securities,  as with other extensions of secured
credit, consist of possible delay in  receiving additional collateral or in  the
recovery  of the securities or possible loss  of rights in the collateral should
the borrower fail financially. Loans will only be made to firms deemed by Fortis
Advisers, Inc. ("Advisers") (or the sub-adviser, if there is one for the Series)
to be of good standing and will not be made unless, in the judgment of  Advisers
(or  the  sub-adviser), the  consideration to  be earned  from such  loans would
justify the risk.
 
SHORT-TERM MONEY MARKET INSTRUMENTS.  Each Series may at  any time invest  funds
awaiting  investment  or  held  as  reserves  for  the  purposes  of  satisfying
redemption requests,  payment  of dividends  or  making other  distributions  to
shareholders,  in cash and short-term money market instruments. Short-term money
market instruments in which each Series  may invest include (i) short-term  U.S.
government   securities   and  short-term   obligations  of   foreign  sovereign
governments and  their agencies  and  instrumentalities, (ii)  interest  bearing
savings  deposits on, and  certificates of deposit  and bankers' acceptances of,
United States  and foreign  banks, (iii)  commercial paper  of U.S.  or  foreign
issuers  rated A-1 or higher by S&P or Prime-1 by Moody's or comparably rated by
another nationally recognized  rating agency,  or, if not  rated, determined  by
Advisers  (or the  sub-adviser, if applicable)  to be of  comparable quality and
(iv) repurchase agreements relating to the foregoing.
 
U.S.  GOVERNMENT  SECURITIES.  Each  Series   may  invest  in  U.S.   government
securities,  which include:  (i) the  following U.S.  Treasury obligations: U.S.
Treasury bills (initial  maturities of one  year or less),  U.S. Treasury  notes
(initial  maturities of  one to  10 years),  and U.S.  Treasury bonds (generally
initial maturities of greater  than 10 years),  all of which  are backed by  the
full  faith and  credit of  the United  States; and  (ii) obligations  issued or
guaranteed  by  U.S.   government  agencies   or  instrumentalities,   including
government  guaranteed mortgage-related securities, some  of which are backed by
the full  faith and  credit  of the  U.S.  Treasury, e.g.,  direct  pass-through
certificates  of the Government National Mortgage Association; some of which are
supported by the right of the issuer  to borrow from the U.S. government,  e.g.,
obligations of Federal Home Loan Banks; and some of which are backed only by the
credit  of the  issuer itself, e.g.,  obligations of the  Student Loan Marketing
Association. U.S. government securities are backed by the full faith and  credit
of  the U.S. government  or guaranteed by the  issuing agency or instrumentality
and, therefore, there is generally considered to  be no risk as to the  issuer's
capacity  to pay interest and repay principal. Nevertheless, due to fluctuations
in interest  rates,  there is  no  guarantee as  to  the market  value  of  U.S.
government securities. See "Investment Objectives and Policies" in the Statement
of  Additional Information  for a further  description of  obligations issued or
guaranteed by U.S. government agencies or instrumentalities.
 
INVESTMENT IN  FOREIGN SECURITIES.  Investing in  securities issued  by  foreign
governments  and corporations  or entities involves  considerations and possible
risks not typically associated with investing in obligations issued by the  U.S.
government  and  domestic corporations.  The values  of foreign  investments are
affected  by  changes  in  currency  rates  or  exchange  control   regulations,
application  of foreign  tax laws, including  withholding taxes,  changes in tax
laws, governmental administration or economic or monetary policy (in the  United
States  or abroad) or  changed circumstances in  dealings between nations. Costs
are incurred  in  connection with  conversions  between various  currencies.  In
addition,  foreign brokerage commissions are generally higher than in the United
States, and foreign  securities markets may  be less liquid,  more volatile  and
less  subject to governmental supervision than in the United States. Investments
in foreign  countries could  be affected  by other  factors not  present in  the
United  States, including seizure, expropriation, confiscatory taxation, risk of
war,  lack  of   uniform  accounting  and   auditing  standards  and   potential
difficulties  in  enforcing contractual  obligations,  and could  be  subject to
extended settlement periods.
 
DEPOSITARY RECEIPTS. The Series which may invest in foreign securities may  hold
equity securities of foreign issuers in the form of American Depositary Receipts
("ADRs"),  European Depositary Receipts ("EDRs") or other securities convertible
into securities of eligible  European or Far  Eastern Issuers. These  securities
may  not necessarily be denominated  in the same currency  as the securities for
which they may be exchanged. ADRs  are receipts typically issued by an  American
bank or trust company that evidence ownership of underlying securities issued by
a  foreign corporation. Generally, ADRs in  registered form are designed for use
in the United States securities markets. For purposes of the Series'  investment
policies,  the  Series'  investments in  ADRs  and  EDRs will  be  deemed  to be
investments in the equity securities representing securities of foreign  issuers
into which they may be converted.
 
   
PORTFOLIO  TURNOVER. The portfolio  turnover rate for a  Series is calculated by
dividing the  lesser  of  purchases  or  sales  by  such  Series  of  investment
securities  for  the particular  fiscal  year by  the  monthly average  value of
investment  securities  owned  by  the  Series  during  the  same  fiscal  year.
"Investment  securities"  for  purposes  of  this  calculation  do  not  include
securities with  a  maturity date  less  than twelve  months  from the  date  of
investment.  A 100%  portfolio turnover  rate would  occur, for  example, if the
lesser of  the  value of  purchases  or sales  of  investment securities  for  a
particular  year  were equal  to  the average  monthly  value of  the investment
securities owned during such year. The portfolio turnover rates are set forth in
the Financial Highlights section.
    
 
                                       24
<PAGE>
GENERAL RISKS TO CONSIDER
 
An investment in any of the Series  involves certain risks in addition to  those
noted  elsewhere in this Prospectus and  the Statement of Additional Information
with respect to particular Series. These include the following:
 
EQUITY SECURITIES GENERALLY. Market prices  of equity securities generally,  and
of  particular companies' equity  securities, frequently are  subject to greater
volatility than  prices of  fixed  income securities.  Market prices  of  equity
securities  as a group  have dropped dramatically  in a short  period of time on
several occasions in the past, and they may  do so again in the future. Each  of
the  Series which may  purchase equity securities (such  as common and preferred
stocks) is subject to the risk of generally adverse equity markets.
 
COMMON AND PREFERRED STOCKS. Stocks represent shares of ownership in a  company.
Generally,  preferred stock has  a specified dividend and  ranks after bonds and
before common stocks in its claim on income for dividend payments and on  assets
should  the  company be  liquidated. After  other  claims are  satisfied, common
stockholders participate in company profits on a pro rata basis; profits may  be
paid  out in dividends or  reinvested in the company  to help it grow. Increases
and decreases in earnings are usually  reflected in a company's stock price,  so
common   stocks  generally  have  the  greatest  appreciation  and  depreciation
potential of all corporate securities.
 
   
SMALLER-CAPITALIZATION COMPANIES. The equity securities of
smaller-capitalization companies may involve  greater risks and volatility  than
the  equity securities  of larger,  more mature companies  due to  some of these
companies potentially having limited product lines, reduced market liquidity for
the trading  of their  shares, limited  financial resources  and less  depth  in
management  than more established companies. Smaller  companies also may be less
significant factors within their industries and may have difficulty withstanding
competition from  larger  companies.  Therefore, the  Small  Cap  Value  Series,
Aggressive  Growth Series and other Series that invest in smaller-capitalization
companies are not  intended as  a complete  or balanced  investment vehicle  but
rather  as an investment for  persons who are in  a financial position to assume
greater risk and share price volatility.  Realizing the full potential of  these
types of companies frequently takes time.
    
 
CONVERTIBLE  SECURITIES  AND  WARRANTS. Certain  Series  may invest  in  debt or
preferred  equity  securities  convertible  into  or  exchangeable  for   equity
securities.   Traditionally,  convertible  securities  have  paid  dividends  or
interest at  rates higher  than  common stocks  but lower  than  non-convertible
securities.  They generally participate  in the appreciation  or depreciation of
the underlying stock into which they are convertible, but to a lesser degree. In
recent years, convertibles  have been  developed which combine  higher or  lower
current  income with options and  other features. Warrants are  options to buy a
stated number of shares of common stock at a specified price any time during the
life of the warrants (generally, two or more years).
 
INTEREST RATE RISK. Interest rate  risk is the risk that  the value of a  fixed-
rate debt security will decline due to changes in market interest rates. Because
the  Series invest in  fixed-rate debt securities, they  are subject to interest
rate risk. In general, when interest rates rise, the value of a fixed-rate  debt
security  declines.  Conversely, when  interest rates  decline,  the value  of a
fixed-rate debt security generally increases.  Thus, shareholders in the  Series
bear  the risk that increases  in market interest rates  will cause the value of
their Series' portfolio investments to decline.
 
   
In general, the value  of fixed-rate debt securities  with longer maturities  is
more  sensitive  to changes  in market  interest  rates than  the value  of such
securities with shorter maturities. Thus, the net asset value of a Series  which
invests  in  securities  with  longer  weighted  average  maturities  (or longer
durations) should be expected to have greater volatility in periods of  changing
market  interest rates than  that of a  Series which invests  in securities with
shorter weighted average maturities (or  shorter durations). As described  below
under  "--Mortgage-Related Securities," it is more difficult to generalize about
the effect of changes in market interest rates on the values of  mortgage-backed
securities.
    
 
Although   Advisers  (or  a  sub-adviser)  may  for  certain  Series  engage  in
transactions intended to hedge the value of a Series' portfolio against  changes
in  market interest rates, there is  no assurance that such hedging transactions
will be undertaken or will fulfill their purpose.
 
CREDIT RISK. Credit risk  is the risk  that the issuer of  a debt security  will
fail  to make payments  on the security  when due. Because  the Series invest in
debt securities, they are subject to credit risk.
 
Securities issued or guaranteed  by the United  States Government generally  are
viewed  as  carrying  minimal  credit risk.  Securities  issued  by governmental
entities but not backed by the full  faith and credit of the United States,  and
securities  issued by private  entities, are subject to  higher levels of credit
risk. The ratings  and certain  other requirements  which apply  to the  Series'
permitted  investments, as described elsewhere  in this Prospectus, are intended
to limit  the amount  of credit  risk undertaken  by the  Series.  Nevertheless,
shareholders  in the Series bear the risk  that payment defaults could cause the
value of their Series' portfolio investments to decline.
 
CALL RISK. Many  corporate bonds may  be redeemed  at the option  of the  issuer
("called") at a specified price prior to their stated maturity date. In general,
it  is advantageous  for a  corporate issuer to  call its  bonds if  they can be
refinanced through the issuance  of new bonds which  bear a lower interest  rate
than  that of the called bonds. Call risk  is the risk that corporate bonds will
be called  during a  period of  declining  market interest  rates so  that  such
refinancings may take place.
 
If  a bond  held by  a Series is  called during  a period  of declining interest
rates, the Series probably will have to reinvest the proceeds received by it  at
a  lower interest rate than  that borne by the called  bond, thus resulting in a
decrease in the Series' income. To the extent that the Series invest in callable
corporate bonds, Series  shareholders bear  the risk that  reductions in  income
will result from the call of the bonds. Most United States Government securities
are not callable before their stated maturity.
 
   
OPTIONS,  FUTURES AND CURRENCY STRATEGIES. The use of forward currency contracts
and  options  and  futures  strategies  involve  certain  investment  risks  and
transaction  costs. These risks include:  dependence on Advisers' (or applicable
sub-advisers')  ability  to  predict  movements  in  the  prices  of  individual
securities;  fluctuations  in the  general securities  markets and  movements in
interest rates and currency markets; imperfect correlation between movements  in
the  price  of  currency, options,  futures  contracts, or  options  thereon and
movements in the price  of the currency  or security hedged  or used for  cover;
unexpected adverse price movements which could render a Series' hedging strategy
unsuccessful  and could  result in losses;  the fact that  skills and techniques
needed to trade options, futures contracts and options thereon or to use forward
currency contracts are different from those  needed to select the securities  in
which  the Series invests; and lack of  assurance that a liquid secondary market
will exist for any particular option, futures contract or option thereon at  any
particular  time requiring  a Series  to maintain  a position  until exercise or
expiration, which could result  in losses. See "Taxation."  In addition, when  a
Series  enters into an over-the-counter contract with a counterparty, the Series
will assume counterparty credit  risk, that is, the  risk that the  counterparty
will  fail to perform its  obligations, in which case  the Series could be worse
off
    
 
                                       25
<PAGE>
   
than if the contract had not been entered into. Additional detail concerning the
use of options and the risks of  such investments can be found in the  Statement
of Additional Information.
    
 
   
MORTGAGE-RELATED SECURITIES. Because residential mortgage loans generally can be
prepaid  in whole or in part by the borrowers at any time without any prepayment
penalty, the holder of a mortgage-related security which represents an  interest
in  a pool of  such mortgage loans  is subject to  a form of  call risk which is
generally called "prepayment risk." In addition, it is more difficult to predict
the effect of changes in market interest rates on the return on mortgage-related
securities than  to predict  the  effect of  such changes  on  the return  of  a
conventional  fixed-rate debt instrument,  the magnitude of  such effects may be
greater in  some cases,  and the  return on  certain types  of  mortgage-related
securities,  such  as interest-only,  principal-only  and inverse  floating rate
mortgage-backed securities,  is particularly  sensitive to  changes in  interest
rates  and in the rate at which the mortgage loans underlying the securities are
prepaid  by   borrowers.   For  these   reasons,   a  Series'   investments   in
mortgage-related  securities  may  involve  greater  risks  than  investments in
governmental or  corporate  bonds.  For  further  information,  see  "Investment
Policies,  Restrictions, and Risks Applicable  to More Than One Series--Mortgage
Related Securities."
    
 
   
ACTIVE MANAGEMENT. All of the Series other than the S&P 500 Index Series  (which
utilizes  a  passive  investment  approach as  described  under  "S&P  500 Index
Series") are  actively  managed  by  Advisers  and,  in  seven  Series,  by  the
sub-advisers  as well. The performance of these Series therefore will reflect in
part the ability of  Advisers (or the sub-advisers)  to select securities  which
are  suited to achieving the Series'  investment objectives. Due to their active
management, these  Series could  underperform other  mutual funds  with  similar
investment objectives or the market generally.
    
 
MANAGEMENT
 
BOARD OF DIRECTORS
 
Under  Minnesota law,  the Board  of Directors of  Fortis Series  (the "Board of
Directors") has overall responsibility for managing Fortis Series in good faith,
in a manner reasonably believed  to be in the  best interests of Fortis  Series,
and  with  the  care an  ordinarily  prudent  person would  exercise  in similar
circumstances. However,  this  management  may be  delegated.  The  Articles  of
Incorporation  of Fortis Series limit the  liability of directors to the fullest
extent permitted by law.
 
THE INVESTMENT ADVISER/TRANSFER AGENT/DIVIDEND AGENT
 
   
Fortis Advisers, Inc.  ("Advisers") is the  investment adviser, transfer  agent,
and  dividend  agent  for each  Series.  Advisers has  been  managing investment
company portfolios since 1949,  and is indirectly owned  50% by Fortis AMEV  and
50%  by  Fortis AG,  diversified financial  services  companies. In  addition to
providing investment  advice,  Advisers is  responsible  for the  management  of
Fortis  Series' business affairs, subject to  the overall authority of the Board
of Directors. Advisers' address is P.O. Box 64284, St. Paul, MN 55164.
    
 
   
THE UNDERWRITER
    
 
   
Fortis Investors,  Inc.  ("Investors"),  a subsidiary  of  Advisers,  is  Fortis
Series' underwriter. Investors' address is that of Fortis Series.
    
 
   
PORTFOLIO MANAGEMENT
    
 
   
Money  Market Series has been  managed by Howard G.  Hudson, Robert C. Lindberg,
Maroun M. Hayek and David C. Greenzang since 1995.
    
 
   
U.S. Government Securities  has been  managed by  Messrs. Hudson  and Hayek  and
Christopher J. Woods since 1995 and Christopher J. Pagano since 1996.
    
 
   
Diversified  Income Series has  been managed by Messrs.  Hudson, Hayek and Woods
and Charles J. Dudley since 1995 and Mr. Pagano since 1996.
    
 
   
High Yield Series has been managed by Messrs. Hudson, Dudley, Lindberg and Hayek
since 1995.
    
 
   
Asset Allocation Series has  been managed by Messrs.  Hudson, Dudley, Hayek  and
Woods since 1995, and Mr. Pagano and Charles L. Mehlhouse since 1996.
    
 
   
Value Series has been managed by Nicholas L.M. DePeyster since its inception.
    
 
   
Growth & Income Series has been managed by Mr. Mehlhouse since 1996.
    
 
   
Global  Growth Series has been managed since  its inception by James S. Byrd who
has primary responsibility  for day-to-day  management of the  Series. Diane  M.
Gotham  has participated  in management  of the  Series since  the date  of this
prospectus.
    
 
   
Growth Stock Series has been managed by Michael J. Romanowski since March 1998.
    
 
   
Aggressive Growth  Series has  been  managed since  its  inception by  Keith  R.
Thomson.
    
 
   
Mr.  Hudson, Executive  Vice President and  Head of Fixed  Income Investments of
Advisers, has been  managing debt securities  for Fortis, Inc.  since 1991.  Mr.
Hudson  performs a  supervisory function in  the management of  the fixed income
Series, including the fixed-income portion  of the Asset Allocation Series.  The
portfolio  managers  supervised by  Mr. Hudson  have primary  responsibility for
these Series' investments in particular types of securities. Specifically, these
individuals and  their  areas of  responsibility  are as  follows:  Mr.  Dudley,
non-investment  grade  securities;  Mr. Hayek,  corporate  bonds;  Mr. Lindberg,
municipal securities;  Mr.  Woods, mortgage-related  securities  and  structured
products;  Mr.  Pagano, treasury  securities;  and Mr.  Greenzang,  money market
instruments.
    
 
   
Mr. Dudley has been a Vice President  of Advisers since 1995, prior to which  he
was a Senior Vice President for SunAmerica Asset Management, New York, NY.
    
 
   
Mr.  Lindberg, a Vice  President of Advisers, has  been managing debt securities
for Advisers since 1993.
    
 
   
Mr. Hayek,  a Vice  President of  Advisers since  1995, has  been managing  debt
securities for Fortis, Inc. since 1987.
    
 
   
Mr.  Woods, a  Vice President  of Advisers  since 1995,  has been  managing debt
securities for Fortis, Inc. since 1993.
    
 
   
Mr. Pagano, a  Vice President  of Advisers since  1996, has  been managing  debt
securities  for Advisers since 1996. Prior to joining Advisers, Mr. Pagano was a
Government Strategist for Merrill Lynch, New York, N.Y.
    
 
   
Mr. Greenzang, a Money Market Portfolio officer, has been involved in management
of debt securities for Fortis, Inc. since 1992.
    
 
   
Lucinda S. Mezey,  Executive Vice President  and Head of  Equity Investments  of
Advisers, has worked for Advisers since October 1997. From 1995 to October 1997,
she  was Chief  Investment Officer, Alex  Brown Capital Advisory  and Trust Co.,
Baltimore, MD and from 1970 to 1995 she was employed by PNC Bank,  Philadelphia,
PA with her last position being Senior
    
 
                                       26
<PAGE>
   
Vice  President and Head of Equity Investments. Ms. Mezey performs a supervisory
function in the management of the equity Series, including the equity portion of
the Asset Allocation Series.
    
 
   
Mr. Byrd is an Executive Vice President  and Mr. Thomson is a Vice President  of
Advisers. Messrs. Byrd and Thomson have managed portfolios for Advisers for more
than five years.
    
 
   
Ms.  Gotham  has  been  a Vice  President  of  Advisers since  1998.  She  was a
securities analyst for  Advisers from 1994  to 1998 and  a systems engineer  for
International Business Machines ("IBM") Minneapolis, MN from 1981 to 1993.
    
 
   
Mr. Mehlhouse, a Vice President of Advisers, has managed portfolios for Advisers
since  1996. Prior to that, Mr. Mehlhouse was a portfolio manager for Marshall &
Isley Bank Corp., Milwaukee, Wisconsin, since 1993.
    
 
   
Mr. DePeyster, a Vice President of  Advisers since 1995, has managed  portfolios
for Advisers since 1991.
    
 
   
Mr. Romanowski, a Vice President of Advisers since 1998, was a portfolio manager
for  Value Line, New York, NY from October 1995 to March 1998, prior to which he
was a securities analyst for Conning & Co. in Hartford, CT from 1992 to 1995.
    
 
THE SUB-ADVISERS
 
   
Global Bond Series, Global Asset Allocation  Series, S&P 500 Index Series,  Blue
Chip  Stock Series, International Stock Series,  Mid Cap Stock Series, Small Cap
Value Series and Large Cap Growth Series each have a sub-investment adviser. For
its services, each sub-adviser is paid a fee by the Adviser.
    
 
   
Each  Series  has  retained  a  sub-adviser  under  an  investment  sub-advisory
agreement (collectively referred to as the "Sub-Advisory Agreements") to provide
investment  advice and, in general, to conduct the management investment program
of each Series,  subject to the  general control  of Advisers and  the Board  of
Directors  of  Fortis  Series.  Pursuant to  the  Sub-Advisory  Agreements, each
sub-adviser  will  regularly  provide  its  respective  Series  with  investment
research,  advice and supervision and furnish continuously an investment program
for  such  Series  consistent  with  its  investment  objectives  and  policies,
including the purchase, retention and disposition of securities.
    
 
The  sub-adviser of each Series is also responsible for the selection of brokers
and dealers to effect securities  transactions and the negotiation of  brokerage
commissions,  if any. Purchases and sales of securities on a securities exchange
are effected  through  brokers who  charge  a negotiated  commission  for  their
services.  Orders may be directed to any  broker including, to the extent and in
the  manner  permitted  by  applicable  law,  affiliates  of  the  sub-advisers.
Brokerage  services provided by affiliates of  the sub-advisers are performed in
conformity with Rule  17e-1 under  the 1940 Act  and procedures  adopted by  the
Board of Directors of Fortis Series.
 
   
GLOBAL  BOND  SERIES.  Mercury  Asset  Management  International  Ltd. ("Mercury
International"), 33  King William  Street,  London, EC4R  9AS, England,  is  the
sub-adviser of the Global Bond Series. Mercury International is registered as an
investment  adviser  with the  Commission. It  is a  wholly owned  subsidiary of
Mercury Asset  Management  Group  Ltd. ("Mercury"),  whose  ultimate  parent  is
Merrill  Lynch &  Co., Inc. The  Merrill Lynch  group manages in  excess of $488
billion of investments on  behalf of clients.  Mercury International manages  in
excess of $6.5 billion of investments.
    
 
   
The  Global Product Strategy Committee of the Fixed Interest Division of Mercury
International has  primary portfolio  management responsibility  for the  Global
Bond Series. Each of the four members of the Strategy Committee is an officer or
director of Mercury International.
    
 
   
GLOBAL ASSET ALLOCATION SERIES. Morgan Stanley Asset Management Limited ("Morgan
Stanley"),  25  Cabot Square,  Canary Wharf,  London, E14  4QA, England,  is the
sub-adviser of  the Global  Asset Allocation  Series. Morgan  Stanley, which  is
registered  as  an investment  adviser with  the Commission,  is a  wholly owned
subsidiary of Morgan Stanley Dean Witter & Co., a global financial services firm
that  maintains  major   market  positions   in  each  of   its  three   primary
businesses--securities,  asset  management and  credit services.  Morgan Stanley
provides a broad  range of  portfolio management  services to  customers in  the
United  States  and  abroad and  as  of  December 31,  1997,  together  with its
affiliated  institutional  investment  managers,  managed  investments  totaling
approximately $146 billion.
    
 
   
Portfolio responsibility for the Global Asset Allocation Series is split between
Morgan  Stanley's equity team led by Frances  Campion and a team of fixed income
portfolio managers  with respect  to fixed  income securities.  Frances  Campion
joined  Morgan Stanley in  1990 and her  responsibilities include the day-to-day
management of the  global equity product.  Ms. Campion has  eleven years  global
investment  experience  and  is  a  Managing  Director  of  Morgan  Stanley. The
investment strategy and allocation of the fixed income portion is set by a  team
of  portfolio managers, the primary members  of which are David Germany, Michael
Kushma and David Stanley. David Germany joined  Morgan Stanley in 1997 and is  a
Managing  Director. He has  18 years investment experience  and was previously a
partner and portfolio manager at Miller Anderson & Sherrerd, LLP, an  investment
advisory  firm which was acquired by Morgan  Stanley and its affiliates in 1996.
Michael Kushma  joined Morgan  Stanley  & Co.  Incorporated  in 1987,  became  a
Principal  in 1996, and  moved to Morgan  Stanley in 1998.  David Stanley joined
Morgan Stanley in 1994 and  became a Vice President  in 1997. He was  previously
employed   by  Aetna  Capital  Management   International,  where  he  had  sole
responsibility for managing all European and global fixed income bond funds.
    
 
   
INTERNATIONAL STOCK SERIES. Lazard  Asset Management ("Lazard"), 30  Rockefeller
Plaza,  New York, New York 10020, is  the sub-adviser of the International Stock
Series. Lazard is  a division of  Lazard Freres &  Co. LLC, a  New York  limited
liability  company founded in 1848, which is registered as an investment adviser
with the Commission and is a member of the New York, American and Midwest  Stock
Exchanges.  Lazard Freres & Co. LLC, provides its clients with a wide variety of
investment banking, brokerage and related services.
    
 
   
Lazard provides investment management services to client discretionary  accounts
with  assets as  of December  31, 1997  totaling approximately  $53 billion. Its
clients are  both individuals  and  institutions, some  of whose  accounts  have
investment policies similar to those of the Series.
    
 
   
John  R.  Reinsberg,  a  managing  director  of  Lazard,  has  primary portfolio
management responsibility for the International Stock Series. Mr. Reinsberg  has
been  primarily  responsible for  the  investment of  the  assets of  the Lazard
International Equity  Portfolio  of  The  Lazard  Funds,  Inc.  since  1992.  In
addition,  Herbert W.  Gullquist, a managing  director and  the Chief Investment
Officer of Lazard Freres since 1982, has overall responsibility for managing the
Series.
    
 
   
S&P 500  INDEX  SERIES  AND  MID  CAP  STOCK  SERIES.  The  Dreyfus  Corporation
("Dreyfus"),  200 Park Avenue, New  York, New York 10166,  is the sub-adviser to
the S&P 500 Index  Series and the  Mid Cap Stock Series.  Dreyfus was formed  in
1947.  Dreyfus is  a wholly-owned  subsidiary of Mellon  Bank, N.A.,  which is a
wholly-owned subsidiary of Mellon Bank Corporation
    
 
                                       27
<PAGE>
   
("Mellon"). As of March 31, 1998, Dreyfus managed or administered  approximately
$100   billion  in  assets  for  approximately  1.7  million  investor  accounts
nationwide.
    
 
   
Mellon  is  a  publicly  owned  multibank  holding  company  incorporated  under
Pennsylvania  law in 1971 and  registered under the Bank  Holding Company Act of
1956, as amended. Mellon  provides a comprehensive  range of financial  products
and services in domestic and selected international markets. Mellon is among the
twenty-five  largest bank holding companies in  the United States based on total
assets. Mellon's  principal wholly-owned  subsidiaries  are Mellon  Bank,  N.A.,
Mellon  Bank (DE) National  Association, Mellon Bank  (MD) National Association,
The Boston Company,  Inc., AFCO  Credit Corporation  and a  number of  companies
known  as  Mellon  Financial Services  Corporations.  Through  its subsidiaries,
including Dreyfus,  Mellon  managed more  than  $104  billion in  assets  as  of
December  31, 1997,  including approximately  $30 billion  in proprietary mutual
fund assets.  As of  December 31,  1997, Mellon,  through various  subsidiaries,
provided  non-investment services, such as custodial or administration services,
for more than $1.532 trillion in assets, including approximately $60 billion  in
mutual fund assets.
    
 
   
Steven  A. Falci has been primarily responsible for the day-to-day management of
Mid Cap Stock Series  since its inception.  He has been  employed by the  Mellon
organization  since  1994,  prior  to which  he  was  Managing Director--Pension
Investments for NYNEX Corporation for more than five years before that time.
    
 
   
BLUE CHIP STOCK SERIES.  T. Rowe Price Associates,  Inc. ("T. Rowe Price"),  100
East  Pratt Street,  Baltimore, MD  21202, is the  sub-adviser of  the Blue Chip
Stock Series. T.  Rowe Price  was founded  in 1937,  and it  and its  affiliates
managed  over  $126  billion for  over  6 million  individual  and institutional
investor accounts as of December 31, 1997. Some of T. Rowe Price's accounts have
investment policies similar to those of the Series.
    
 
   
The Series  has  an investment  advisory  committee composed  of  the  following
members: Larry J. Puglia, chairman, Brian W.H. Berghuis, Thomas H. Broadus, Jr.,
Thomas  J. Huber, Robert W.  Smith and William J.  Stromberg. Mr. Puglia has the
day-to-day responsibilities  of  managing  the  Series  and  has  been  managing
investments since joining T. Rowe Price in 1990.
    
 
   
SMALL  CAP  VALUE SERIES.  Berger  Associates, Inc.  ("Berger  Associates"), 210
University Boulevard, Denver, Colorado 80206,  the sub-adviser of the Small  Cap
Value  Series, has  entered into  an agreement  with Perkins,  Wolf, McDonnell &
Company (the "Manager") to provide the day-to-day investment management for  the
Series under which Berger Associates will pay the manager an amount equal to .25
of 1% of the average daily net assets of the Series.
    
 
   
Robert  H. Perkins has been primarily  responsible for the day-to-day management
of Small Cap Value Series  since its inception. Mr.  Perkins is President and  a
Director of the Manager and has been an investment manager since 1970.
    
 
   
LARGE  CAP  GROWTH  SERIES.  Alliance Capital  Management  L.P.  ("Alliance"), a
Delaware limited  partnership  with principal  offices  at 1345  Avenue  of  the
Americas,  New York, New York 10105, is  the sub-adviser of the Large Cap Growth
Series. Alliance  is  an  international investment  manager  supervising  client
accounts with assets as of December 31, 1997 totaling more than $218 billion (of
which approximately $85 billion represented the assets of investment companies).
Alliance's  clients are primarily major corporate employee benefit funds, public
employee retirement  systems, investment  companies, foundations  and  endowment
funds. The 54 registered investment companies managed by Alliance comprising 116
separate  investment portfolios currently have over two million shareholders. As
of December 31,  1997, Alliance was  an investment manager  of employee  benefit
plan assets for 31 of the Fortune 100 companies.
    
 
   
Alliance  Capital Management Corporation ("ACMC"),  the sole general partner of,
and owner of  a 1%  general partnership interest  in, Alliance,  is an  indirect
wholly-owned  subsidiary of The  Equitable Life Assurance  Society of the United
States ("Equitable"),  which  is  a wholly-owned  subsidiary  of  The  Equitable
Companies  Incorporated,  a  holding  company controlled  by  AXA-UAP,  a French
insurance holding company.
    
 
   
James G.  Reilly,  a Senior  Vice  President  of Alliance,  has  been  primarily
responsible  for the day-to-day management of  Large Cap Growth Series since its
inception. Mr. Reilly joined Alliance in  1984 and has been a portfolio  manager
on  the  U.S. Large  Cap team  since 1988.  Mr. Reilly  has 14  years investment
experience.
    
 
   
FEES AND EXPENSES
    
 
   
Each Series pays certain operating and management expenses which are  calculated
as  a percentage  of the  Series' average  daily net  assets. Included  in these
expenses are investment advisory fees which are paid by each Series pursuant  to
an  Investment  Advisory  and  Management Agreement  between  Fortis  Series and
Advisers. Advisers has entered into Investment Sub-Advisory Agreements on behalf
of certain Series. For their  services, the Sub-Advisers are  paid a fee by  the
Adviser.  For  the fiscal  year ending  December  31, 1997,  the ratio  of total
operating expenses to average daily net assets, the advisory fee as a percentage
of average daily net assets and the sub-advisory fee as a percentage of  average
daily assets for each Series is listed below.
    
 
   
<TABLE>
<CAPTION>
                                          TOTAL OPERATING    ADVISORY    SUB-ADVISORY
                                              EXPENSE           FEE           FEE
                                         -----------------  -----------  -------------
<S>                                      <C>                <C>          <C>
Money Market Series                              0.38%           0.30%        --
U.S. Government Securities Series                0.54%           0.47%        --
Diversified Income Series                        0.55%           0.47%        --
Global Bond Series                               1.10%           0.75%         0.35%
High Yield Series                                0.62%           0.50%        --
Global Asset Allocation Series                   1.16%           0.90%         0.50%
Asset Allocation Series                          0.53%           0.48%        --
Value Series                                     0.83%           0.70%        --
Growth & Income Series                           0.70%           0.65%        --
S&P 500 Series                                   0.51%           0.40%         0.17%
Blue Chip Stock Series                           1.02%           0.90%         0.50%
International Stock Series                       1.08%           0.85%         0.45%
Mid Cap Stock Series*                            1.10%           0.90%         0.50%
Small Cap Value Series*                          1.10%           0.90%         0.50%
Global Growth Series                             0.79%           0.70%        --
Large Cap Growth Series*                         1.10%           0.90%         0.50%
Growth Stock Series                              0.66%           0.61%        --
Aggressive Growth Series                         0.76%           0.69%        --
</TABLE>
    
 
- --------------------------
   
*   Total  operating expenses  are based  on estimated  amounts for  the current
   fiscal year since the Series had not commenced operations as of December  31,
   1997.
    
 
BROKERAGE ALLOCATION
 
Advisers  may consider  sales of  shares of  Fortis Series,  and of  other funds
advised or administered  by Advisers or  a sub-adviser may  be considered, as  a
factor  in the selection of broker-dealers  to execute Fortis Series' securities
transactions when it is  believed that this can  be done without causing  Fortis
Series to pay more in brokerage commissions than it would otherwise.
 
                                       28
<PAGE>
   
THE SEPARATE ACCOUNTS AND THE CONTRACTS
    
 
   
Shares  in  Fortis Series  are  currently sold  to  separate accounts  of Fortis
Benefits and  First Fortis  which fund  benefits under  variable life  insurance
policies  and variable  annuity contracts  issued by  Fortis Benefits  and First
Fortis. Each Contract owner  allocates Contract value  among the subaccounts  of
the  Separate  Accounts, which  in turn  invest in  the corresponding  Series of
Fortis Series. The  rights of the  Separate Accounts as  shareholders should  be
distinguished  from the rights of  a Contract owner, which  are described in the
Contract. The term "shareholder" or "shareholders" in this Prospectus refers  to
Fortis  Benefits, First Fortis, any of  their affiliates, or any other insurance
company that  owns  Fortis Series  shares.  "Contract owner"  means  the  owner,
annuitant  or beneficiary that is entitled to exercise the rights and privileges
under a Contract.
    
 
PERIODIC REPORTS
 
Contract  owners  will  receive  semiannual  reports  including  the   financial
statements  of the Series  to which their  premiums have been  allocated and the
investments held in each such Series.
 
   
GENERAL INFORMATION
    
 
Fortis Series has only common shares with equal voting rights.
 
VOTING PRIVILEGES
 
The voting privileges of Contract owners, and limitations thereon, are explained
in the accompanying prospectus for the Contracts. The shareholders are  entitled
to  vote all of  the shares of Fortis  Series, but they will  generally do so in
accordance  with  the  instructions  of  the  Contract  owners.  Under   certain
circumstances,  however, shareholders may disregard voting instructions received
from Contract  owners. For  additional information  describing how  shareholders
will  vote  the  shares  of  Fortis  Series,  see  "Voting  Privileges"  in  the
accompanying prospectus(es) for the applicable Contracts.
 
   
YEAR 2000
    
 
   
Like other mutual funds, financial and business organizations around the  world,
Fortis  Series could be adversely  affected if the computer  systems used by it,
Advisers and other service providers and entities with computer systems that are
linked  to  Fortis  Series  records  do  not  properly  process  and   calculate
date-related  information  and data  from  and after  January  1, 2000.  This is
commonly known  as  the "Year  2000  issue." The  Series  and Advisers  and  its
affiliates are taking steps that they believe are reasonably designed to address
the  Year 2000 issue with respect to the computer systems they use and to obtain
satisfactory assurances that  comparable steps are  being taken by  each of  the
Series'  other major service providers. However,  there can be no assurance that
these steps will be sufficient to avoid any adverse impact on the Series.
    
 
DIVIDENDS AND CAPITAL GAINS DISTRIBUTIONS
 
Fortis Series intends to distribute at least annually as dividends substantially
all the net investment  income, if any, of  each Series. For dividend  purposes,
net  investment income of each Series will  consist of all dividends (other than
stock dividends) or interest received by  such Series less the accrued  expenses
of  each such  Series. Fortis  Series will also  declare and  distribute all net
realized capital gains annually. Dividends from investment income of the  Series
and  capital  gains  distributions will  be  reinvested in  additional  full and
fractional shares. Dividends  and distributions  on shares  not attributable  to
Contracts, however, may be paid in cash.
 
TAXATION
 
Each  Series  intends to  qualify as  a regulated  investment company  under the
Internal Revenue Code of 1986, as amended. So long as each Series so  qualifies,
the  Series is not taxed on the  income it distributes to the Separate Accounts.
So long as  each Series qualifies  as a regulated  investment company and  meets
certain  diversification  tests  applicable  to  the  segregated  asset accounts
underlying variable annuity  and life insurance  contracts, the Contract  owners
will  not be considered to be the owners of the shares of the Series, and income
earned with respect to the Contracts will not be taxed currently to the Contract
owners.
 
For the tax consequences of owning  a Contract, see the accompanying  prospectus
for  the Contracts. For more information  concerning the taxation of the Series,
see "Taxation" in the Statement of Additional Information.
 
PURCHASE AND REDEMPTION OF SHARES
 
GENERALLY
 
   
Shares in Fortis Series  are currently offered at  the respective per share  net
asset  value  of each  Series.  Such shares  are  offered only  to  the Separate
Accounts, which  fund benefits  payable  under the  Contracts described  in  the
accompanying prospectus. Fortis Series sells its shares to the Separate Accounts
through Fortis Investors, Inc. ("Investors"). Investors receives no underwriting
compensation  from Fortis Series. Fortis Series may in the future also offer its
shares to separate accounts of other insurance companies.
    
 
The Board of  Directors will monitor  events for the  existence of any  material
irreconcilable  conflict  between  or  among  owners  of  insurance  or  annuity
contracts, and  the relevant  insurance companies  will take  whatever  remedial
action  may  be  necessary and  appropriate.  Fortis Benefits  and  First Fortis
currently do not foresee any  disadvantages to their respective Contract  owners
arising  out of the fact that Fortis  Series offers its shares both for variable
life insurance  policies  and variable  annuity  contracts. However,  should  an
irreconcilable  conflict arise between the Separate Accounts, the conflict could
result in one or more of the Separate Accounts terminating its relationship with
Fortis Series, thus  necessitating the liquidation  of portfolio securities  and
thereby  potentially having  an adverse  impact on the  net asset  values of the
affected Series.
 
On each day  when Fortis Series  values its  assets, shares of  each Series  are
purchased  or redeemed by the Separate  Accounts based upon, among other things,
the amounts of  net premiums allocated  to the Separate  Account, dividends  and
distributions  reinvested, transfers  to and  among subaccounts  of the Separate
Accounts, policy loans, loan repayments and benefit payments to be processed  on
that  date. Such purchases and redemptions for the Separate Account are effected
at the net  asset value per  share for each  Series determined as  of that  same
date.  Any orders to purchase or redeem  Fortis Series shares that do not result
automatically from Contract transactions will be effected at the net asset value
per share next computed after the order is placed.
 
Investors, Advisers  and Fortis  Series each  reserve the  right to  reject  any
purchase order.
 
OFFERING PRICE
 
   
The  offering prices of  each Series' shares  are determined once  daily and are
equal to the  net asset values  per share  of the shares  next calculated  after
receipt  of  the purchase  order. The  Series'  net asset  values per  share are
determined by dividing the value of the securities owned by the Series, plus any
cash  or  other   assets,  less   all  liabilities,   by  the   number  of   the
    
 
                                       29
<PAGE>
   
Series'  shares outstanding. All significant  expenses, including the investment
advisory fee payable to Advisers, are accrued daily. The portfolio securities in
which the Series invest fluctuate in value,  and hence the net asset values  per
share  of the Series also fluctuate. The  net asset values of the Series' shares
are determined as of the close of regular trading on the New York Stock Exchange
(the "Exchange") on each day on which the Exchange is open.
    
 
Securities are generally valued at market value. A security listed or traded  on
an  exchange  is valued  at its  last sale  price  on the  exchange where  it is
principally traded on the  day of valuation. Lacking  any sales on the  exchange
where  it is principally traded on the day of valuation, prior to the time as of
which assets are valued, the security generally is valued at the previous  day's
last  sale price  on that exchange.  A security  listed or traded  on the Nasdaq
National Market is valued at its last sale price that day, and lacking any sales
that day on the Nasdaq National Market, the security generally is valued at  the
last  bid  price. Options  will  be valued  at market  value  or fair  value, as
determined in good faith by the Board of Directors, if no market exists. Futures
contracts will be  valued in a  like manner except  that open futures  contracts
sales  will be valued using  the closing settlement price  or, in the absence of
such a price, the most recent quoted asked price.
 
An outside  pricing  service may  be  utilized  to provide  valuations  of  debt
securities. The pricing service may employ electronic data processing techniques
and/or  a  matrix system  to determine  valuations  using methods  which include
consideration of yields or prices of bonds of comparable quality, type of issue,
coupon, maturity and rating; indications as  to value from dealers; and  general
market  conditions. When  market quotations are  not readily  available, or when
illiquid securities or other assets are  being valued, such securities or  other
assets  are valued at fair value as determined in good faith by management under
supervision of the Series'  Board of Directors.  Short-term investments in  debt
securities  with  maturities  of  less  than 60  days  when  acquired,  or which
subsequently are  within 60  days of  maturity, are  valued at  amortized  cost.
Purchases  and  sales  by the  non-sub-advised  Series after  2:00  P.M. Central
Time--and purchases  and  sales  by the  sub-advised  Series--normally  are  not
recorded until the following business day.
 
Any assets or liabilities initially expressed in terms of foreign currencies are
translated into U.S. dollars at the official exchange rate or, alternatively, at
the mean of the current bid and asked prices of such currencies against the U.S.
dollar  last quoted by a major bank that is a regular participant in the foreign
exchange market or on the basis of a pricing service that takes into account the
quotes  provided  by  a  number  of  such  major  banks.  If  neither  of  these
alternatives  is available nor provides a  suitable methodology for converting a
foreign currency into U.S.  dollars, the Board of  Directors in good faith  will
establish a conversion rate for such currency.
 
European  or Far Eastern  securities trading may  not take place  on all days on
which the Exchange is  open. Trading in securities  on European and Far  Eastern
securities  exchanges and  over-the-counter markets  is normally  completed well
before the close of the business day  in New York. Further, trading takes  place
in  Japanese markets on certain Saturdays and in various foreign markets on days
on which the Exchange is not open  and therefore the Series' net asset value  is
not calculated. The calculation of the Series' net asset value therefore may not
take  place contemporaneously with the determination of the prices of securities
held by the  Series. Events affecting  the values of  portfolio securities  that
occur between the time their prices are determined and the close of the Exchange
will  not be reflected in  the Series' net asset  value unless management, under
the supervision of the Board of Directors, determines that the particular  event
would  materially affect  net asset  value. As a  result, the  Series' net asset
value may be significantly affected by  such trading on days when Fortis  Series
is not open for shareholder purchases and redemptions.
 
TRANSFERS AMONG SUBACCOUNTS
 
   
Contract  owners may transfer  amounts among the  subaccounts available to them,
and may  change  allocations  of  premiums  as  explained  in  the  accompanying
prospectus  for the  Contracts. These  transfers have  the effect  of changing a
Contract  owners'  participation  in  the  various  Series.  Transfers   between
subaccounts are not taxable under current Federal income tax law.
    
 
REDEMPTION
 
Fortis  Series is required  to redeem all  full and fractional  shares of Fortis
Series for cash within seven days of receipt of proper notice of redemption. The
net asset value of redeemed shares may be more or less than the net asset  value
of the same shares at the time the Separate Account invested in such shares.
 
   
For  further  information, Contract  owners  may also  contact  Fortis Benefits'
office, the address of which is the same as that of Fortis Series, as set  forth
on  the cover of this Prospectus. New  York contract owners should contact First
Fortis' office: P.O. Box 3209, Syracuse, New York 13220.
    
 
APPENDIX
 
COMMERCIAL PAPER RATINGS
 
STANDARD & POOR'S RATINGS SERVICES. A Standard & Poor's commercial paper  rating
is  a current assessment of  the likelihood of timely  payment of debt having an
original maturity of no more than  365 days. Ratings are graded into  categories
ranging from "A" for the highest quality obligations to "D" for the lowest.
 
"A"   Issues  assigned this highest  rating are regarded  as having the greatest
      capacity for timely payment. Issues  in this category are delineated  with
      the numbers 1, 2 and 3 to indicate the relative degree of safety.
 
"A-1"  This  designation indicates  that the  degree of  safety regarding timely
       payment is either overwhelming or very strong. Those issues determined to
       possess overwhelming safety characteristics are  denoted with a (+)  sign
       designation.
 
"A-2"  Capacity  for timely payment  on issues with  this designation is strong.
       However, the  relative degree  of safety  is not  as high  as for  issues
       designated "A-1."
 
"A-3"  Issues  carrying this designation have a satisfactory capacity for timely
       payment. They  are,  however, somewhat  more  vulnerable to  the  adverse
       effects  of changes in circumstances than obligations carrying the higher
       designations.
 
The commercial  paper rating  is not  a  recommendation to  purchase or  sell  a
security.  The ratings are based on  current information furnished to Standard &
Poor's by the issuer or obtained  from other sources it considers reliable.  The
ratings  may be changed,  suspended, or withdrawn  as a result  of changes in or
unavailability of such information.
 
MOODY'S INVESTORS SERVICE, INC. Moody's short-term debt ratings are opinions  of
the  ability of  the issuers to  repay punctually senior  debt obligations which
have  an  original   maturity  not   exceeding  one  year.   Moody's  makes   no
representation  that  such obligations  are exempt  from registration  under the
Securities Act of 1933, nor does it represent that any specific note is a  valid
obligation  of  a  rated issuer  or  issued  in conformity  with  any applicable
 
                                       30
<PAGE>
law. Moody's  employs  the  following  three  designations,  all  judged  to  be
investment grade, to indicate the relative repayment capacity of rated issuers:
 
"Prime-1"  Superior ability for repayment of senior short-term debt obligations.
 
"Prime-2"  Strong ability for repayment of senior short-term debt obligations.
 
"Prime-3"  Acceptable   ability   for  repayment   of  senior   short-term  debt
           obligations.
 
CORPORATE BOND RATINGS
 
   
Note: Standard & Poor's Corporation ratings  from "AA" to "CCC" may be  modified
by  the addition of  a plus or minus  sign to show  relative standing within the
major rating  categories.  Moody's  Investors Service,  Inc.  applies  numerical
modifiers 1, 2 and 3 in each generic rating classification from "Aa" to "B." The
modifier  "1" indicates that the  applicable company ranks in  the higher end of
its generic rating category; the modifier "2" indicates a mid-range ranking; and
the modifier "3" indicates that the applicable company ranks in the lower end of
its generic rating category.
    
 
STANDARD & POOR'S  RATINGS SERVICES. Its  ratings for corporate  bonds have  the
following definitions:
 
Debt  rated "AAA" has the highest rating assigned by Standard & Poor's. Capacity
to pay interest and repay principal is extremely strong.
 
Debt rated "AA" has a very strong  capacity to pay interest and repay  principal
and differs from the higher rated issues only in a small degree.
 
Debt  rated  "A" has  a strong  capacity  to pay  interest and  repay principal,
although it is somewhat  more susceptible to the  adverse effects of changes  in
circumstances and economic conditions than debt in higher rated categories.
 
Debt  rated "BBB" is regarded as having an adequate capacity to pay interest and
repay principal. Whereas  it normally exhibits  adequate protection  parameters,
adverse economic conditions or changing circumstances are more likely to lead to
a  weakened  capacity to  pay  interest and  repay  principal for  debt  in this
category than in higher rated categories.
 
Debt rated  "BB,"  "B,"  "CCC,"  "CC,"  and "C"  is  regarded,  on  balance,  as
predominantly  speculative with  respect to capacity  to pay  interest and repay
principal in accordance  with the terms  of the obligation.  "BB" indicates  the
lowest  degree of speculation  and "C" the highest  degree of speculation. While
such debt will likely  have some quality  and protective characteristics,  these
are  outweighed  by  large  uncertainties or  major  risk  exposures  to adverse
conditions.
 
Debt  rated  "BB"  has  less  near-term  vulnerability  to  default  than  other
speculative issues. However, it faces major ongoing uncertainties or exposure to
adverse  business,  financial,  or  economic  conditions  which  could  lead  to
inadequate capacity to  meet timely  interest and principal  payments. The  "BB"
rating  category  is also  used for  debt  subordinated to  senior debt  that is
assigned an actual or implied "BBB-" rating.
 
Debt rated "B"  has a  greater vulnerability to  default but  currently has  the
capacity  to meet interest payments  and principal repayments. Adverse business,
financial, or economic conditions will likely impair capacity or willingness  to
pay  interest and repay principal. The "B" rating category is also used for debt
subordinated to senior debt that is assigned an actual or implied "BB" or  "BB-"
rating.
 
Debt  rated "CCC" has a currently  identifiable vulnerability to default, and is
dependent upon favorable  business, financial, and  economic conditions to  meet
timely  payment of interest and repayment of  principal. In the event of adverse
business, financial,  or economic  conditions,  it is  not  likely to  have  the
capacity  to pay interest and repay principal. The "CCC" rating category is also
used for debt subordinated to senior debt that is assigned an actual or  implied
"B" or "B-" rating.
 
The rating "CC" is typically applied to debt subordinated to senior debt that is
assigned an actual or implied "CCC" rating.
 
The rating "C" is typically applied to debt subordinated to senior debt which is
assigned  an actual or implied "CCC-" debt rating. The "C" rating may be used to
cover a situation where a bankruptcy  petition has been filed, but debt  service
payments are continued.
 
The rating "CI" is reserved for income bonds on which no interest is being paid.
 
   
Debt  rated "D"  is in  payment default.  The "D"  rating category  is used when
interest payments or principal payments are not made on the date due even if the
applicable grace period has not expired, unless Standard & Poor's believes  that
such payments will be made during such grace period. The "D" rating also will be
used  upon the  filing of  a bankruptcy  petition if  debt service  payments are
jeopardized.
    
 
"NR" indicates that  no rating has  been requested, that  there is  insufficient
information on which to base a rating, or that Standard & Poor's does not rate a
particular type of obligation as a matter of policy.
 
MOODY'S  INVESTORS SERVICE,  INC. Its  ratings for  corporate bonds  include the
following:
 
Bonds which are rated "Aaa" are judged to be of the best quality. They carry the
smallest degree of investment risk and are generally referred to as "gilt edge."
Interest payments are protected by a large or by an exceptionally stable  margin
and  principal is  secure. While the  various protective elements  are likely to
change, such  changes as  can be  visualized  are most  unlikely to  impair  the
fundamentally strong position of such issues.
 
Bonds  which are rated "Aa"  are judged to be of  high quality by all standards.
Together with the Aaa group they comprise what are generally known as high grade
bonds. They are rated  lower than the best  bonds because margins of  protection
may  not be as large as in  Aaa securities or fluctuation of protective elements
may be of greater amplitude  or there may be  other elements present which  make
the long-term risk appear somewhat larger than in Aaa securities.
 
Bonds  which  are rated  "A" possess  many  favorable attributes  and are  to be
considered as  upper  medium  grade  obligations.  Factors  giving  security  to
principal and interest are considered adequate but elements may be present which
suggest a susceptibility to impairment sometime in the future.
 
Bonds  which are rated  "Baa" are considered as  medium grade obligations, i.e.,
they are  neither highly  protected nor  poorly secured.  Interest payments  and
principal  security  appear  adequate  for the  present  but  certain protective
elements may be lacking or may  be characteristically unreliable over any  great
length  of time. Such  bonds lack outstanding  investment characteristics and in
fact have speculative characteristics as well.
 
Bonds which are rated "Ba" are judged to have speculative elements; their future
cannot be  considered as  well assured.  Often the  protection of  interest  and
principal  payments may be very moderate and thereby not well safeguarded during
both good and bad times over  the future. Uncertainty of position  characterizes
bonds in this class.
 
                                       31
<PAGE>
Bonds  which  are  rated "B"  generally  lack characteristics  of  the desirable
investment. Assurance of interest  and principal payments  or of maintenance  of
other terms of the contract over any long period of time may be small.
 
Bonds  which are rated "Caa" are of poor standing. Such issues may be in default
or there  may  be  present elements  of  danger  with respect  to  principal  or
interest.
 
Bonds which are rated "Ca" represent obligations which are speculative in a high
degree. Such issues are often in default or have other marked shortcomings.
 
Bond which rated "C" are the lowest rated class of bonds and issues so rated can
be  regarded  as having  extremely  poor prospects  of  ever attaining  any real
investment standing.
 
BOND INVESTMENT  QUALITY STANDARDS:  Under present  commercial bank  regulations
issued  by  the  Comptroller  of  the Currency,  bonds  rated  in  the  top four
categories (Moody's ratings Aaa,  Aa, A and Baa,  and Standard & Poor's  ratings
AAA,  AA, A and BBB, commonly known as "Investment Grade" ratings) are generally
regarded as eligible for bank investment. In addition, the Legal Investment Laws
of various  states impose  certain  rating or  other standards  for  obligations
eligible  for investment by savings  banks, trust companies, insurance companies
and fiduciaries generally.
 
   
PREFERRED STOCK RATINGS
    
 
   
Note: Standard & Poor's Corporation ratings  from "AA" to "CCC" may be  modified
by  the addition of  a plus or minus  sign to show  relative standing within the
major rating  categories.  Moody's  Investors Service,  Inc.  applies  numerical
modifiers 1, 2 and 3 in each generic rating classification from "Aa" to "B." The
modifier  "1" indicates that the  applicable company ranks in  the higher end of
its generic rating category; the modifier "2" indicates a mid-range ranking; and
the modifier "3" indicates that the applicable company ranks in the lower end of
its generic rating category.
    
 
STANDARD & POOR'S  RATINGS SERVICES. Its  ratings for preferred  stock have  the
following definitions:
 
An  issue rated "AAA" has the highest rating  that may be assigned by Standard &
Poor's to a preferred stock issue and indicates an extremely strong capacity  to
pay the preferred stock obligations.
 
A preferred stock issue rated "AA" also qualifies as a high-quality fixed income
security.  The  capacity  to pay  preferred  stock obligations  is  very strong,
although not as overwhelming as for issues rated "AAA."
 
An issue rated  "A" is backed  by a sound  capacity to pay  the preferred  stock
obligations,  although it is somewhat more susceptible to the adverse effects of
changes in circumstances and economic conditions.
 
An issue rated "BBB" is  regarded as backed by an  adequate capacity to pay  the
preferred  stock obligations.  Whereas it normally  exhibits adequate protection
parameters, adverse  economic conditions,  or  changing circumstances  are  more
likely  to lead to a weakened capacity to make payments for a preferred stock in
this category than for issues in the "A" category.
 
MOODY'S INVESTORS  SERVICE, INC.  Its ratings  for preferred  stock include  the
following:
 
An issue which is rated "Aaa" is considered to be a top-quality preferred stock.
This  rating  indicates good  asset protection  and the  least risk  of dividend
impairment within the universe of preferred stocks.
 
An issue which is  rated "Aa" is considered  a high-grade preferred stock.  This
rating  indicates that  there is  reasonable assurance  that earnings  and asset
protection will remain relatively well maintained in the foreseeable future.
 
An issue which is rated "A" is considered to be an upper-medium grade  preferred
stock.  While risks are judged to be somewhat greater than in the "aaa" and "aa"
classifications, earnings and asset protection  are nevertheless expected to  be
maintained at adequate levels.
 
An  issue which is rated "Baa" is  considered to be medium grade, neither highly
protected nor poorly secured. Earnings  and asset protection appear adequate  at
present but may be questionable over any great length of time.
 
                                       32
<PAGE>
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<PAGE>
   
[LOGO]
    
FORTIS FINANCIAL GROUP
P.O. BOX 64284
ST. PAUL, MN 55164
 
     BULK RATE
    U.S. POSTAGE
        PAID
  PERMIT NO. 3794
  MINNEAPOLIS, MN
 
PROSPECTUS
   
MAY 1, 1998
    
 
FORTIS
SERIES FUND, INC.
<PAGE>
   
                            FORTIS SERIES FUND, INC.
                      STATEMENT OF ADDITIONAL INFORMATION
                               DATED MAY 1, 1998
    
 
   
This Statement of Additional Information is NOT a prospectus, but should be read
in  conjunction with the  Fortis Series Fund,  Inc. ("Fortis Series") Prospectus
dated May 1, 1998. A copy of that prospectus may be obtained from Fortis Series,
 
P.O. Box 64582, St. Paul, Minnesota 55164.
    
 
No broker-dealer, sales representative, or  other person has been authorized  to
give  any information or to make  any representations other than those contained
in this  Statement  of  Additional  Information, and  if  given  or  made,  such
information or representations must not be relied upon as having been authorized
by  Fortis  Benefits Insurance  Company ("Fortis  Benefits"), First  Fortis Life
Insurance Company ("First  Fortis"), Fortis  Series, or  Fortis Investors,  Inc.
("Investors").  This Statement of Additional  Information does not constitute an
offer or solicitation by anyone in any state in which such offer or solicitation
is not authorized, or in which the  person making such offer or solicitation  is
not  qualified to do so,  or to any person  to whom it is  unlawful to make such
offer or solicitation.
 
                                       33
<PAGE>
TABLE OF CONTENTS
   
<TABLE>
<CAPTION>
                                                    PAGE
<S>                                                 <C>
ORGANIZATION AND CLASSIFICATION...................  35
INVESTMENT OBJECTIVES AND POLICIES................  35
    - General.....................................  35
    - Certificates of Deposit and Bankers'
      Acceptances.................................  35
    - Mortgage-Related Securities.................  35
    - Securities of Foreign Companies.............  37
    - Repurchase Agreements.......................  37
    - Reverse Repurchase Agreements...............  38
    - Extendible Notes............................  38
    - Delayed Delivery Transactions...............  38
    - Dollar Rolls................................  38
    - Lending of Portfolio Securities.............  38
    - Options.....................................  39
    - Futures Contracts and Options on
      Futures Contracts...........................  39
    - Foreign Currency Forward
      Exchange Contracts..........................  40
    - Segregated Accounts.........................  40
    - Restricted and Illiquid Securities..........  40
    - Securities of Other Investment Companies....  40
    - Warrants or Rights..........................  40
    - Short Sales Against the Box.................  40
    - U.S. Treasury Inflation-Protection
     Securities...................................  40
    - Investment Restrictions.....................  41
    - Risk Factors................................  47
DIRECTORS AND EXECUTIVE OFFICERS..................  49
 
<CAPTION>
                                                    PAGE
<S>                                                 <C>
 
INVESTMENT ADVISORY AND OTHER SERVICES............  51
    - General.....................................  51
    - Control and Management of Advisers and
      Investors...................................  51
    - Investment Advisory and Management
      Agreement...................................  51
    - Sub-Advisory Agreements.....................  52
    - Expenses....................................  53
PORTFOLIO TRANSACTIONS AND ALLOCATION OF
 BROKERAGE........................................  53
CAPITAL STOCK.....................................  55
COMPUTATION OF NET ASSET VALUE AND PRICING........  56
REDEMPTION........................................  56
TAXATION..........................................  56
UNDERWRITER.......................................  57
PERFORMANCE.......................................  57
SYSTEMATIC WITHDRAWAL.............................  59
FINANCIAL STATEMENTS..............................  60
CUSTODIAN AND COUNSEL.............................  60
LIMITATION OF DIRECTOR LIABILITY..................  60
ADDITIONAL INFORMATION............................  60
APPENDIX--DESCRIPTION OF FUTURES, OPTIONS AND
 FORWARD CONTRACTS................................  61
INDEPENDENT AUDITORS' REPORT (Mid Cap Stock
 Series, Small Cap Value Series and Large Cap
 Growth Series)
    - Statements of Assets and Liabilities
    - Notes to Financial Statement
</TABLE>
    
 
                                       34
<PAGE>
ORGANIZATION AND CLASSIFICATION
 
   
An investment company is an arrangement by which a number of persons invest in a
company  that in  turn invests in  securities of other  companies. Fortis Series
operates as  an  "open-end" investment  company  and generally  must  redeem  an
investor's  shares upon request. Fortis Series  is currently made up of eighteen
separate series  (the "Series").  Because the  Series, except  Global Bond  Fund
Series,  are diversified, they offer investors  an opportunity to minimize their
risk  by  spreading  their  investment  over  a  number  of  issuers.   However,
diversification cannot eliminate such risks.
    
 
INVESTMENT OBJECTIVES AND POLICIES
 
GENERAL
 
   
Each Series, except the Global Bond Series, operates as a diversified investment
company  as defined under the  Investment Company Act of  1940 (the "1940 Act"),
which means that it must  meet the following requirements:  at least 75% of  the
value  of its total assets will be represented by cash and cash items (including
receivables), Government securities, securities  of other investment  companies,
and  other securities for the purposes of this calculation limited in respect of
any one issuer to  an amount not greater  in value than 5%  of the value of  the
total  assets of the Series  and to not more than  10% of the outstanding voting
securities of such issuer.
    
 
   
Although Global Bond Series is classified as a nondiversified investment company
under the  1940  Act, Global  Bond  Series is  still  required to  meet  certain
diversification  requirements  in order  to qualify  as a  "regulated investment
company" for federal  income tax  purposes under  the Internal  Revenue Code  of
1986,  as  amended (the  "Code"). To  so  qualify, the  Global Bond  Series must
diversify its holdings  so that, at  the close  of each quarter  of its  taxable
year,  (a) at least 50% of the value of its total assets is represented by cash,
cash  items,  securities  issued  by  the  U.S.  Government,  its  agencies  and
instrumentalities,  the securities of other  regulated investment companies, and
other securities limited generally with respect  to any one issuer to an  amount
not more than 5% of the total assets of the Global Bond Series and not more than
10%  of the outstanding voting securities of  such issuer, and (b) not more than
25% of the value of its total assets is invested in the securities of any issuer
(other  than  securities  issued  by  the  U.S.  Government,  its  agencies   or
instrumentalities or the securities of other regulated investment companies), or
in two or more issuers that the Global Bond Series controls and that are engaged
in the same or similar trades or businesses.
    
 
CERTIFICATES OF DEPOSIT AND BANKERS' ACCEPTANCES
 
As  noted in the Prospectus, the Series  may invest in certificates of deposits.
Certificates of  deposit are  receipts issued  by  a bank  in exchange  for  the
deposit of funds. The issuer agrees to pay the amount deposited plus interest to
the  bearer  of  the receipt  on  the  date specified  on  the  certificate. The
certificate usually can  be traded in  the secondary market  prior to  maturity.
Bankers'   acceptances  typically  arise  from  short-term  credit  arrangements
designed  to  enable   businesses  to   obtain  funds   to  finance   commercial
transactions.  Generally, an acceptance  is a time  draft drawn on  a bank by an
exporter or importer  to obtain a  stated amount  of funds to  pay for  specific
merchandise.   The  draft  is  then  "accepted"  by  a  bank  that,  in  effect,
unconditionally guarantees  to pay  the  face value  of  the instrument  on  its
maturity  date. The  acceptance may  then be  held by  the accepting  bank as an
earning asset or it  may be sold in  the secondary market at  the going rate  of
discount  for a specific maturity. Although maturities for acceptances can be as
long as 270 days, most acceptances have maturities of six months or less.
 
MORTGAGE-RELATED SECURITIES
 
Consistent with the investment objectives and policies of all but the Aggressive
Growth Series as set  forth in the Prospectus,  and the investment  restrictions
set  forth below,  the Series  may invest  in certain  types of mortgage-related
securities. One type  of mortgage-related security  includes certificates  which
represent  pools of  mortgage loans assembled  for sale to  investors by various
governmental and  private  organizations.  These securities  provide  a  monthly
payment, which consists of both an interest and a principal payment, which is in
effect  a "pass-through" of the monthly payment made by each individual borrower
on his or her residential mortgage loan, net  of any fees paid to the issuer  or
guarantor  of such securities.  Additional payments are  caused by repayments of
principal resulting  from  the  sale of  the  underlying  residential  property,
refinancing  or foreclosure, net  of fees or  costs which may  be incurred. Some
certificates  (such  as  those  issued  by  the  Government  National   Mortgage
Association)  are described as "modified pass-through." These securities entitle
the holder to receive all interest  and principal payments owed on the  mortgage
pool,  net of certain  fees, regardless of whether  the mortgagor actually makes
the payment.
 
A major governmental  guarantor of pass-through  certificates is the  Government
National Mortgage Association ("GNMA"). GNMA guarantees, with the full faith and
credit  of the  United States government,  the timely payments  of principal and
interest on securities issued by institutions approved by GNMA (such as  savings
and  loan institutions,  commercial banks  and mortgage  bankers) and  backed by
pools of FHA-insured or  VA-guaranteed mortgages. Other governmental  guarantors
(but  not backed by the  full faith and credit  of the United States Government)
include the Federal National Mortgage Association ("FNMA") and the Federal  Home
Loan Mortgage Corporation ("FHLMC"). FNMA purchases residential mortgages from a
list  of approved  seller/servicers which include  state and federally-chartered
savings and loan associations, mutual savings banks, commercial banks and credit
unions and mortgage bankers.
 
       (i) GNMA  CERTIFICATES. Certificates  of the  GNMA ("GNMA  Certificates")
       evidence  an  undivided  interest  in  a  pool  of  mortgage  loans. GNMA
       Certificates differ from bonds in that principal is paid back monthly  as
       payments  of principal,  including prepayments,  on the  mortgages in the
       underlying pool are passed  through to holders  of the GNMA  Certificates
       representing interests in the pool, rather than returned in a lump sum at
       maturity. "Modified pass-through" GNMA Certificates entitle the holder to
       receive  a share of all  interest and principal payments  paid or owed to
       the mortgage pool,  net of fees  paid or  due to the  "issuer" and  GNMA,
       regardless of whether or not the mortgagor actually makes the payment.
 
       (ii)  GNMA  GUARANTEE.  The  National  Housing  Act  authorizes  GNMA  to
       guarantee the  timely payment  of principal  and interest  on  securities
       backed   by  a  pool   of  mortgages  insured   by  the  Federal  Housing
       Administration ("FHA") or the  Farmers' Home Administration ("FmHA"),  or
       guaranteed  by the Veterans Administration ("VA"). GNMA is also empowered
       to borrow without  limitation from  the U.S. Treasury,  if necessary,  to
       make any payments required under its guarantee.
 
       (iii)  LIFE OF GNMA CERTIFICATES. The  average life of a GNMA Certificate
       is likely  to be  substantially  less than  the  stated maturity  of  the
       mortgages   underlying  the  securities.   Prepayments  of  principal  by
       mortgagors and mortgage foreclosures will usually result in the return of
       the greater part of principal investment long before the maturity of  the
       mortgages  in  the  pool. Foreclosures  impose  no  risk of  loss  of the
       principal balance of a  Certificate, because of  the GNMA guarantee,  but
       foreclosure  may impact the yield to  shareholders because of the need to
       reinvest proceeds of foreclosure.
 
                                       35
<PAGE>
       As prepayment rates of individual mortgage  pools vary widely, it is  not
       possible  to predict accurately the average life of a particular issue of
       GNMA Certificates. However, statistics published by the FHA indicate that
       the average life of single family  dwelling mortgages with 25 to  30-year
       maturities,  the  type of  mortgages backing  the  vast majority  of GNMA
       Certificates, is  approximately  12  years.  Prepayments  are  likely  to
       increase  in periods of falling interest  rates. It is customary to treat
       GNMA Certificates  as  30-year mortgage-backed  securities  which  prepay
       fully in the twelfth year.
 
       (iv)  YIELD  CHARACTERISTICS OF  GNMA  CERTIFICATES. The  coupon  rate of
       interest of GNMA Certificates is lower than the interest rate paid on the
       VA-guaranteed or FHA-insured  mortgages underlying  the certificates,  by
       the amount of the fees paid to GNMA and the issuer.
 
       The  coupon rate  by itself, however,  does not indicate  the yield which
       will be  earned on  GNMA Certificates.  First, GNMA  Certificates may  be
       issued at a premium or discount, rather than at par, and, after issuance,
       GNMA  Certificates  may trade  in the  secondary market  at a  premium or
       discount. Second, interest is  earned monthly, rather than  semi-annually
       as with traditional bonds; monthly compounding raises the effective yield
       earned.  Finally, the actual yield of a GNMA Certificate is influenced by
       the prepayment  experience  of  the  mortgage  pool  underlying  it.  For
       example, if interest rates decline, prepayments may occur faster than had
       been originally projected and the yield to maturity and investment income
       would be reduced.
 
       (v)  FHLMC  SECURITIES.  "FHLMC"  is  a  federally  chartered corporation
       created in 1970  through enactment  of Title  III of  the Emergency  Home
       Finance  Act  of  1970.  Its  purpose  is  to  promote  development  of a
       nationwide secondary market in conventional residential mortgages.
 
       The FHLMC issues two types of mortgage pass-through securities,  mortgage
       participation  certificates ("PCs") and  guaranteed mortgage certificates
       ("GMCs"). PCs resemble GNMA Certificates in that each PC represents a pro
       rata share of  all interest and  principal payments made  or owed on  the
       underlying  pool. The FHLMC guarantees timely  payment of interest on PCs
       and the ultimate payment  of principal. Like  GNMA Certificates, PCs  are
       assumed to be prepaid fully in their twelfth year.
 
       GMCs  also represent a pro rata interest in a pool of mortgages. However,
       these instruments pay interest semi-annually and return principal once  a
       year  in guaranteed minimum payments. The  expected average life of these
       securities is approximately ten years.
 
       (vi) FNMA SECURITIES. "FNMA" is a federally chartered and privately owned
       corporation which was established in 1938 to create a secondary market in
       mortgages insured  by  the  FHA.  It  was  originally  established  as  a
       government agency and was transformed into a private corporation in 1968.
 
       FNMA   issues  guaranteed   mortgage  pass-through   certificates  ("FNMA
       Certificates"). FNMA Certificates resemble GNMA Certificates in that each
       FNMA Certificate  represents  a  pro  rata  share  of  all  interest  and
       principal  payments made or owed on  the underlying pool. FNMA guarantees
       timely payment of interest  on FNMA certificates and  the full return  of
       principal.  Like GNMA Certificates,  FNMA Certificates are  assumed to be
       prepaid fully in their twelfth year.
 
Commercial banks,  savings and  loan  institutions, private  mortgage  insurance
companies,  mortgage  bankers, and  other secondary  market issuers  also create
pass-through pools of conventional residential mortgage loans. Such issuers  may
in  addition be the originators of the  underlying mortgage loans as well as the
guarantors  of   the   pass-through   certificates.  Pools   created   by   such
non-governmental  issuers  generally  offer  a  higher  rate  of  interest  than
governmental  pools  because  there  are  no  direct  or  indirect  governmental
guarantees  of payments in the former pools. However, timely payment of interest
and principal of these pools may be  supported by various forms of insurance  or
guarantees,  including individual loan,  title, pool, and  hazard insurance. The
insurance and guarantees  are issued by  government entities, private  insurers,
and the mortgage poolers.
 
Fortis  Series expects that governmental or private entities may create mortgage
loan pools  offering pass-through  investments in  addition to  those  described
above.  As new  types of  pass-through securities  are developed  and offered to
investors, the Series may, consistent with their investment objectives, policies
and restrictions, consider making investments in such new types of securities.
 
Other types of  mortgage-related securities  include debt  securities which  are
secured,  directly  or indirectly,  by mortgages  on  commercial real  estate or
residential rental properties,  or by  first liens  on residential  manufactured
homes  (as  defined  in  section 603(6)  of  the  National  Manufactured Housing
Construction and Safety Standards Act of 1974), whether such manufactured  homes
are  considered real or personal property under  the laws of the states in which
they are located.
 
Securities  in  this  investment   category  include,  among  others,   standard
mortgage-related  bonds  and newer  collateralized mortgage  obligations (CMOs).
Mortgage-related  bonds  are  secured  by   pools  of  mortgages,  but,   unlike
pass-through  securities, payments to bondholders are not determined by payments
on the mortgages.  The bonds consist  of a single  class, with interest  payable
monthly  and  principal  payable on  the  stated  date of  maturity.  CMO's have
characteristics of  both  pass-through securities  and  mortgage-related  bonds.
CMO's  are secured by pools of mortgages,  typically in the form of "guaranteed"
pass-through certificates such as GNMA, FNMA, or FHLMC securities. The  payments
on  the collateral  securities determine  the payments  to the  bondholders, but
there is not  a direct  "pass-through" of  payments. CMO's  are structured  into
multiple classes, each bearing a different date of maturity. Monthly payments of
principal received from the pool of underlying mortgages, including prepayments,
is  first returned to  investors holding the  shortest maturity class. Investors
holding the longest maturity  classes receive principal  only after the  shorter
maturity classes have been retired.
 
CMO's  are issued by entities that operate  under orders from the Securities and
Exchange Commission (the SEC) exempting such issuers from the provisions of  the
1940  Act. Until recently, the staff of the SEC had taken the position that such
issuers were investment  companies and  that, accordingly, an  investment by  an
investment  company (such as the  Series) in the securities  of such issuers was
subject to  limitations imposed  by Section  12  of the  1940 Act.  However,  in
reliance  on  a  recent  SEC  staff interpretation,  the  Series  may  invest in
securities  issued  by  certain  "exempted   issuers"  without  regard  to   the
limitations  of Section 12 of the 1940 Act. In its interpretation, the SEC staff
defined "exempted issuers"  as unmanaged,  fixed asset issuers  that (a)  invest
primarily  in mortgage-backed securities, (b) do not issue redeemable securities
as defined  in Section  2(a)(32) of  the  1940 Act,  (c) operate  under  general
exemptive  orders exempting them from "all provisions of the [1940] Act" and (d)
are not registered or regulated under the 1940 Act as investment companies.
 
There are many  classes of  CMOs. There  are IOs,  which entitle  the holder  to
receive  distributions consisting solely or primarily of all or a portion of the
interest in Mortgage Assets. There are  also "POs," which entitle the holder  to
receive  distributions consisting solely or primarily of all or a portion of the
principal of  the  underlying  pool  of  Mortgage  Assets.  In  addition,  there
 
                                       36
<PAGE>
are  "inverse floaters,"  which have  a coupon  rate that  moves in  the reverse
direction to  an  applicable  index,  and accrual  (or  "Z")  bonds,  which  are
described below.
 
   
As to IOs, POs, inverse floaters, and accrual bonds, not more than 5% of the net
assets  of each of U.S. Government Securities Series, Diversified Income Series,
Global Bond Series,  High Yield  Series, Global Asset  Allocation Series,  Asset
Allocation  Series and International Stock Series will be invested in any one of
these items at any one time, and no more  than 10% of the net assets of each  of
such  series will be invested in all such  obligations at any one time. Not more
than 5% of the Global Growth Series' net assets collectively will be invested in
such obligations at any time.
    
 
Inverse floating CMOs are typically more volatile than fixed or adjustable  rate
tranches of CMOs. Investments in inverse floating CMOs would be purchased by the
Series  to attempt to  protect against a  reduction in the  income earned on the
Series' investments due  to a  decline in interest  rates. The  Series would  be
adversely  affected by the purchase of such CMOs  in the event of an increase in
interest rates since  the coupon rate  thereon will decrease  as interest  rates
increase, and, like other mortgage-backed securities, the value will decrease as
interest rates increase.
 
The  cash flows and yields  on IO and PO classes  are extremely sensitive to the
rate of principal  payments (including  prepayments) on  the related  underlying
pool  of mortgage loans  or mortgage-backed securities  ("Mortgage Assets"). For
example, a rapid or slow rate of principal payments may have a material  adverse
effect  on the yield to maturity of  IOs or POs, respectively. If the underlying
Mortgage Assets experience  greater than anticipated  prepayments of  principal,
the  holder of an IO may incur substantial losses, even if the IO class is rated
AAA. Conversely,  if  the  underlying Mortgage  Assets  experience  slower  than
anticipated  prepayments of principal, the yield and market value for the holder
of a PO will be affected more severely than would be the case with a traditional
Mortgage Backed Security.
 
However, if interest  rates were  expected to  rise, the  value of  an IO  might
increase  and may partially offset other bond  value declines, and if rates were
expected to fall, the inclusion of POs could balance lower reinvestment rates.
 
An accrual or "Z" bond holder is not entitled to receive cash payments until one
or more other classes  of the CMO have  been paid in full  from payments on  the
mortgage  loans underlying the CMO. During the period in which cash payments are
not being made on the Z tranche, interest  accrues on the Z tranche at a  stated
rate, and this accrued interest is added to the amount of principal which is due
to  the holder of the Z tranche. After the other classes have been paid in full,
cash payments  are  made  on  the  Z  tranche  until  its  principal  (including
previously  accrued interest which  was added to  principal, as described above)
and accrued interest at the stated rate  have been paid in full. Generally,  the
date  upon which cash  payments begin to be  made on a Z  tranche depends on the
rate at which the mortgage loans underlying  the CMO are prepaid, with a  faster
prepayment  rate resulting in an earlier commencement  of cash payments on the Z
tranche. Like a zero coupon bond, during  its accrual period the Z tranche of  a
CMO  has the advantage of eliminating  the risk of reinvesting interest payments
at lower rates during a period of  declining market interest rates. At the  same
time, however, and also like a zero coupon bond, the market value of a Z tranche
can  be expected to fluctuate more widely  with changes in market interest rates
than would the market value of a tranche which pays interest currently.  Changes
in  market interest rates also can be  expected to influence prepayment rates on
the mortgage loans underlying the CMO of which  a Z tranche is a part. As  noted
above,  such changes  in prepayment  rates will  affect the  date at  which cash
payments begin to be made on a Z tranche, and therefore also will influence  its
market value.
 
Investments  in mortgage-related securities involve certain risks. In periods of
declining interest  rates,  prices of  fixed  income securities  tend  to  rise.
However,  during such  periods, the rate  of prepayment  of mortgages underlying
mortgage-related securities  tends  to  increase,  with  the  result  that  such
prepayments  must be reinvested by  the issuer at lower  rates. In addition, the
value of such securities may fluctuate in response to the market's perception of
the creditworthiness  of the  issuers of  mortgage-related securities  owned  by
Fortis  Series. Because investments in  mortgage-related securities are interest
sensitive, the ability  of the issuer  to reinvest or  to reinvest favorably  in
underlying  mortgages may be limited by government regulation or tax policy. For
example, action by the Board of Governors of the Federal Reserve System to limit
the growth of the  nation's money supply  may cause interest  rates to rise  and
thereby  reduce the volume of  new residential mortgages. Additionally, although
mortgages and mortgage-related securities are  generally supported by some  form
of government or private guarantees and/or insurance, there is no assurance that
private guarantors or insurers will be able to meet their obligations.
 
SECURITIES OF FOREIGN COMPANIES
 
   
In  certain  countries,  governmental  restrictions  and  other  limitations  on
investment may affect  the maximum  percentage of  equity ownership  in any  one
company.  In addition, in some instances  only special classes of securities may
be purchased by foreigners,  and the market prices,  liquidity, and rights  with
respect  to  those securities  may vary  from shares  owned by  nationals. Money
Market Series, U.S.  Government Securities  Series and  Asset Allocation  Series
each  may invest in securities of, or guaranteed by, the Government of Canada, a
Province of Canada, or any  instrumentality or political subdivision thereof  in
an  amount not  exceeding 25%  of the  value of  its total  assets. Money Market
Series and Asset Allocation Series each may  invest up to an additional 15%  and
20%,  respectively of its total assets in securities of foreign companies (which
does not include  domestic branches  of foreign  banks and  foreign branches  of
domestic  banks), provided  that no  more than  15% of  Asset Allocation Series'
total assets  may be  invested in  foreign  securities that  are not  traded  on
national  foreign securities exchanges or traded  in the United States. However,
these Series each may not invest more than 49% of the value of its total  assets
collectively  in: (i) securities of, or guaranteed by, the Government of Canada,
a Province of Canada, or  any instrumentality or political subdivision  thereof;
(ii)  securities of foreign companies; and (iii) securities of domestic branches
of foreign banks  and foreign  branches of  domestic banks.  High Yield  Series,
Value Series, Growth & Income Series, Growth Stock Series, and Aggressive Growth
Series  each may invest up  to 10% of its total  assets in securities of foreign
governments and companies.  The Small  Cap Value  Series may  invest in  foreign
securities without limitation.
    
 
Investing in foreign securities may result in greater risk than that incurred by
investing in domestic securities. See "Risk Factors."
 
REPURCHASE AGREEMENTS
 
   
Each  Series may invest  in repurchase agreements. A  repurchase agreement is an
instrument under which securities are purchased from a bank or securities dealer
with an  agreement by  the seller  to repurchase  the securities  at a  mutually
agreed upon date, interest rate, and price. Generally, repurchase agreements are
of short duration, usually less than a week, but on occasion for longer periods.
Each  Series investment  in repurchase agreements  with a maturity  of more than
seven days  is  subject to  the  Series' limitations  regarding  restricted  and
illiquid  securities. In investing  in repurchase agreements,  a Series' risk is
limited to the ability of such bank or securities dealer to pay the agreed  upon
amount  at  the  maturity  of  the  repurchase  agreement.  In  the  opinion  of
management, such  risk  is  not  material; if  the  other  party  defaults,  the
underlying  security constitutes collateral for  the obligation to pay--although
the Series  may  incur certain  delays  in  obtaining direct  ownership  of  the
collateral,  plus costs in  liquidating the collateral.  In the event  a bank or
securities dealer defaults on the
    
 
                                       37
<PAGE>
repurchase  agreement,   management   believes   that,   barring   extraordinary
circumstances,  the Series will be entitled to sell the underlying securities or
otherwise receive  adequate protection  (as defined  in the  federal  Bankruptcy
Code)  for its interest in such securities. To the extent that proceeds from any
sale upon a default were less than the repurchase price, the Series could suffer
a loss. If  the Series  owns underlying securities  following a  default on  the
repurchase agreement, the Series will be subject to risk associated with changes
in  the market  value of  such securities. The  Series' custodian  will hold the
securities underlying any repurchase agreement or such securities may be part of
the Federal  Reserve Book  Entry  System. The  market  value of  the  collateral
underlying  the repurchase agreement will be determined on each business day. If
at any time the market value of the collateral falls below the repurchase  price
of  the repurchase agreement  (including any accrued  interest), the Series will
promptly receive additional collateral (so the total collateral is in an  amount
at  least equal  to the  repurchase price plus  accrued interest).  The Board of
Directors  of  Fortis   Series  (the   "Board  of   Directors")  evaluates   the
creditworthiness of issuers which are securities dealers.
 
U.S.  Government Securities  Series will  only execute  repurchase agreements in
which the  underlying security  meets  the criteria  of the  Series'  investment
policies.  U.S. Government  Securities Series will  limit transactions involving
repurchase agreements to domestic commercial banks and/or recognized dealers  in
United  States  government securities  believed by  Advisers to  present minimum
credit risks.
 
REVERSE REPURCHASE AGREEMENTS
 
   
S&P 500 Index Series, Blue Chip Stock  Series and Mid Cap Stock Series each  may
enter  into reverse repurchase agreements to  meet redemption requests where the
liquidation of portfolio securities is deemed by such Series to be  inconvenient
or disadvantageous, although Blue Chip Stock Series does not currently intend to
make  such investments.  Reverse repurchase  agreements are  ordinary repurchase
agreements in which  a Series is  the seller  of, rather than  the investor  in,
securities,  and agrees to repurchase them at an agreed upon time and price. Use
of a reverse repurchase agreement may be preferable to a regular sale and  later
repurchase  of  the  securities  because  it  avoids  certain  market  risks and
transaction costs. A  reverse repurchase agreement  may be viewed  as a type  of
borrowing by the Series.
    
 
EXTENDIBLE NOTES
 
   
Money  Market Series,  Global Bond  Series, Global  Asset Allocation  Series and
Asset Allocation Series each are permitted to  invest up to 25% of the value  of
its  total assets in extendible notes. An  extendible note is a debt arrangement
under which  the holder,  at its  option, may  require the  issuer, typically  a
financial  or an industrial concern, to  repurchase the note for a predetermined
fixed price at  one or more  times prior to  the ultimate maturity  date of  the
note.  Typically, an extendible note  is issued at an  interest rate that can be
adjusted at fixed times throughout its term.  At the same times as the  interest
rate  is adjusted by the  issuer, the holder of the  note is typically given the
option to "put" the note back to  the issuer at a predetermined price, e.g.,  at
100%  of the outstanding  principal amount plus unpaid  accrued interest, if the
extended interest rate is undesirable to the holder. This option to put the note
back to the issuer, i.e., to require the issuer to repurchase the note, provides
the holder  with an  optional maturity  date  that is  shorter than  the  actual
maturity date of the note.
    
 
Extendible notes are typically issued with maturity dates in excess of 13 months
from  the date  of issuance.  If such extendible  notes provide  for an optional
maturity date of 13 months or less, however, then such notes are deemed by these
Series to have been issued for the shorter optional maturity date.  Accordingly,
investment  in  such  extendible notes  would  not  be in  contravention  of the
investment policy of the  Series not to invest  in securities having a  maturity
date  in  excess  of 13  months  from  the date  of  acquisition.  Investment in
extendible notes is  not expected  to have a  material impact  on the  effective
portfolio maturity of these Series.
 
An  investment in an  extendible note is liquid,  and the note  may be resold to
another investor prior to  its optional maturity date  at its market value.  The
market  value  of an  extendible note  with  a given  optional maturity  date is
determined and fluctuates in  a similar manner  to the market  value of a  fixed
maturity  note  with  a maturity  equivalent  to  the optional  maturity  of the
extendible note.  Compared to  fixed-term  notes of  the same  issuer,  however,
extendible  notes  with equivalent  optional  maturities generally  yield higher
returns without a material increase in risk to the Series buying them.
 
   
The creditworthiness of  the issuers of  the extendible notes  is monitored  and
rated  by Moody's and by S&P, and investments by these Series in such extendible
notes are restricted to notes with the same investment ratings as are acceptable
to the Series with respect to other forms of investment. The creditworthiness of
such issuers  is also  monitored by  Advisers (as  well as  the sub-adviser  for
Global Bond Series and Global Asset Allocation Series).
    
 
DELAYED DELIVERY TRANSACTIONS
 
The  purchase  of  securities  on a  when-issued,  delayed  delivery  or forward
commitment basis exposes a Series to risk because the securities may decrease in
value prior to their delivery.  Purchasing securities on a when-issued,  delayed
delivery  or  forward commitment  basis involves  the  additional risk  that the
return available in the market when the delivery takes place will be higher than
that obtained in the transaction itself.  These risks could result in  increased
volatility  of a Series' net asset value to the extent that the Series purchases
securities on a when-issued, delayed delivery or forward commitment basis  while
remaining substantially fully invested.
 
DOLLAR ROLLS
 
In  connection with  their ability  to purchase  securities on  a when-issued or
forward commitment basis, each Series other than Money Market Series and  Growth
Stock  Series may enter into  "dollar rolls" in which  a Series sells securities
for delivery in  the current month  and simultaneously contracts  with the  same
counterparty  to repurchase  similar (same  type, coupon  and maturity)  but not
identical securities on a specified future date. Each Series gives up the  right
to  receive principal  and interest paid  on the securities  sold. However, each
Series would benefit to the extent of any difference between the price  received
for the securities sold and the lower forward price for the future purchase plus
any  fee income  received. Unless  such benefits  exceed the  income and capital
appreciation that would have been realized on the securities sold as part of the
dollar roll, the use of this technique will diminish the investment  performance
of  each Series compared with what such  performance would have been without the
use of dollar rolls. Each Series will hold and maintain in a segregated  account
until the settlement date cash or any security that is not considered restricted
or  illiquid  in an  amount equal  to the  value of  the when-issued  or forward
commitment securities. The  benefits derived from  the use of  dollar rolls  may
depend,  among other  things, upon Adviser's  (or the  sub-adviser's) ability to
predict interest rates correctly. There is no assurance that dollar rolls can be
successfully employed. In addition,  the use of dollar  rolls by a Series  while
remaining  substantially  fully invested  increases the  amount of  each Series'
assets that are subject to  market risk to an amount  that is greater than  each
Series' net asset value, which could result in increased volatility of the price
of each Series' shares.
 
LENDING OF PORTFOLIO SECURITIES
 
   
Consistent  with applicable  regulatory requirements,  Global Bond  Series, High
Yield Series,  Global Asset  Allocation Series,  Value Series,  Growth &  Income
Series, S&P 500 Index Series, Blue Chip Stock Series,
    
 
                                       38
<PAGE>
   
International Stock Series, Mid Cap Stock Series, Small Cap Value Series, Global
Growth  Series, Large Cap  Growth Series and Aggressive  Growth Series, may lend
their portfolio securities (principally to broker-dealers) where such loans  are
callable  at any  time and  are continuously  secured by  collateral (cash, U.S.
government securities, certificates of deposit, or other high-grade,  short-term
obligations  or interest-bearing  cash equivalents)  equal to  no less  than the
market value,  determined daily,  of  the securities  loaned. Such  Series  will
receive  amounts equal to dividends or  interest on the securities loaned. These
Series will also earn income  for having made the  loan. Such Series will  limit
such  lending to not more than  33 1/3% of the value  of each such Series' total
assets and Global Growth Series will limit such lending to not more than 30%  of
the  value of its total assets (for  each such Series, including the amount lent
as well as the collateral securing  such loans). Where voting or consent  rights
with  respect to loaned securities pass  to the borrower, management will follow
the policy of calling the  loan, in whole or in  part as may be appropriate,  to
permit the exercise of such voting or consent rights if the issues involved have
a material effect on such Series investment in the securities loaned. Apart from
lending  its securities, investing in  repurchase agreements, and acquiring debt
securities,  as  described  in  the  Prospectus  and  Statement  of   Additional
Information, these Series will not make loans to other persons.
    
 
   
The  risks in lending portfolio securities,  as with other extensions of secured
credit, consist of possible delay in  receiving additional collateral or in  the
recovery  of the securities or possible loss  of rights in the collateral should
the borrower  fail financially.  Loans will  only  be made  to firms  deemed  by
Advisers  to be of good standing and will not be made unless, in the judgment of
Advisers, the consideration to be earned from such loans would justify the risk.
    
 
OPTIONS
 
   
As provided below, in order to protect  against declines in the value of  Series
securities  or increases in the costs of  securities to be acquired and in order
to increase the gross income of Global Growth Series, the Series may enter  into
transactions  in options on a  variety of instruments and  indices. The types of
instruments to be purchased  and sold are further  described in the Appendix  of
this  Statement of Additional  Information, which should  be read in conjunction
with the following sections.
    
 
   
OPTIONS ON  SECURITIES. Global  Bond  Series, High  Yield Series,  Global  Asset
Allocation Series, Value Series, Growth & Income Series, Blue Chip Stock Series,
International  Stock Series, Global  Growth Series and  Aggressive Growth Series
may write (sell) covered call and covered put options and purchase call and  put
options  on securities (provided that  International Stock Series and Aggressive
Growth Series will  write and  purchase options  only on  equity securities  and
Global Bond Series and High Yield Series will write and purchase options only on
debt securities). Where such Series write an option which expires unexercised or
is closed out by such Series at a profit, it will retain all or a portion of the
premium  received for the option, which will  increase its gross income and will
offset in part  the reduced value  of any such  Series' security underlying  the
option,  or the  increased cost  of such Series'  securities to  be acquired. In
contrast, however, if the  price of the underlying  security moves adversely  to
such  Series' position,  the option  may be  exercised and  such Series  will be
required to purchase or sell the underlying security at a disadvantageous price,
which may only be partially offset by the amount of the premium, if at all. Such
Series may also write combinations of put and call options on the same security,
known as "straddles." Such transactions  can generate additional premium  income
but also present increased risk.
    
 
Such  Series may  also purchase  put or call  options in  anticipation of market
fluctuations which may adversely affect the value of its portfolio or the prices
of securities that such Series wants to  purchase at a later date. In the  event
that  the expected market fluctuations occur, such  Series may be able to offset
the resulting adverse effect on its portfolio, in whole or in part, through  the
options  purchased.  The  premium  paid  for  a  put  or  call  option  plus any
transaction costs will reduce the benefit, if any, realized by such Series  upon
exercise  or liquidation of the option, and,  unless the price of the underlying
security changes  sufficiently, the  option  may expire  without value  to  such
Series.
 
FUTURES CONTRACTS AND OPTIONS ON FUTURES CONTRACTS
 
   
FUTURES   CONTRACTS.  Global  Bond  Series,  High  Yield  Series,  Global  Asset
Allocation Series, Blue Chip Stock  Series, International Stock Series, Mid  Cap
Stock  Series  and Global  Growth Series  may enter  into interest  rate futures
contracts. Global Bond  Series, Global  Asset Allocation  Series, Value  Series,
Growth  &  Income  Series,  S&P  500  Index  Series,  Blue  Chip  Stock  Series,
International Stock Series, Mid Cap Stock Series, Small Cap Value Series, Global
Growth Series, Large Cap  Growth Series and Aggressive  Growth Series may  enter
into  stock index  futures contracts for  hedging purposes.  Global Bond Series,
High Yield  Series, Global  Asset  Allocation Series,  Blue Chip  Stock  Series,
International Stock Series, Mid Cap Stock Series, Small Cap Value Series, Global
Growth  Series, Large  Cap Growth Series  and Aggressive Growth  Series may also
enter into  foreign currency  futures  contracts. (Unless  otherwise  specified,
interest  rate  futures contracts,  stock  index futures  contracts  and foreign
currency futures contracts are collectively referred to as "Futures Contracts.")
    
 
Purchases or  sales of  stock index  futures contracts  are used  to attempt  to
protect  current or intended stock investments  from broad fluctuations in stock
prices. Interest rate and  foreign currency futures  contracts are purchased  or
sold  to  attempt to  hedge against  the  effects of  interest or  exchange rate
changes on a Series' current or intended investments in fixed income or  foreign
securities.  In the event that an anticipated decrease in the value of a Series'
securities occurs  as a  result of  a general  stock market  decline, a  general
increase  in  interest  rates, or  a  decline  in the  dollar  value  of foreign
currencies in which portfolio securities are denominated, the adverse effects of
such changes may be offset, in whole or in part, by gains on the sale of Futures
Contracts. Conversely,  the  increased  cost  of  a  Series'  securities  to  be
acquired,  caused by a  general rise in  the stock market,  a general decline in
interest rates, or  a rise in  the dollar  value of foreign  currencies, may  be
offset,  in whole or  in part, by  gains on Futures  Contracts purchased by such
Series. The Series will incur brokerage fees when it purchases and sells Futures
Contracts, and it will be required to make and maintain margin deposits.
 
   
OPTIONS ON  FUTURES CONTRACTS.  Global Bond  Series, High  Yield Series,  Global
Asset Allocation Series, Blue Chip Stock Series, Mid Cap Stock Series and Global
Growth  Series, may  purchase and  write options  to buy  or sell  interest rate
futures contracts.  In  addition,  the Global  Asset  Allocation  Series,  Value
Series,  Growth &  Income Series,  Blue Chip  Stock Series,  International Stock
Series, Mid Cap Stock Series, Global Growth Series and Aggressive Growth Series,
may purchase and  write options on  stock index futures  contracts. Global  Bond
Series,  High  Yield Series,  Global Asset  Allocation  Series, Blue  Chip Stock
Series, International Stock Series, Mid  Cap Stock Series, Global Growth  Series
and  Aggressive Growth Series may purchase and write options on foreign currency
futures contracts. (Unless otherwise specified, options on interest rate futures
contracts, options  on stock  index futures  contracts, and  options on  foreign
currency  futures contracts are collectively referred  to as "Options on Futures
Contracts.") Such investment  strategies will  be used as  a hedge  and not  for
speculation.
    
 
   
Put  and call  Options on  Futures Contracts  may be  traded by  the Global Bond
Series, High Yield Series, Global Asset Allocation Series, Value Series,  Growth
&  Income Series,  Blue Chip  Stock Series,  International Stock  Series, Global
Growth Series and Aggressive Growth Series in order to protect against  declines
in  the values  of such Series  securities or  against increases in  the cost of
securities to be acquired. Purchases of Options on
    
 
                                       39
<PAGE>
Futures Contracts may present less risk in hedging than the purchase or sale  of
the  underlying Futures  Contracts since  the potential  loss is  limited to the
amount of  the premium  plus  related transaction  costs.  The writing  of  such
options,  however,  does  not present  less  risk  than the  trading  of futures
contracts and will  constitute only a  partial hedge,  up to the  amount of  the
premium received, and, if an option is exercised, these Series may suffer a loss
on the transaction.
 
FOREIGN CURRENCY FORWARD EXCHANGE CONTRACTS
 
For a discussion of foreign currency forward exchange contracts, see "Investment
Policies,  Restrictions, and Risks  Applicable to More  Than One Series--Foreign
Currency Forward Exchange Contracts" in the Prospectus.
 
   
OPTIONS ON FOREIGN  CURRENCIES. Global  Bond Series, High  Yield Series,  Global
Asset Allocation Series, Blue Chip Stock Series, International Stock Series, Mid
Cap Stock Series, Global Growth Series and Aggressive Growth Series may purchase
and  write  put  and call  options  on  foreign currencies  for  the  purpose of
protecting against declines in the dollar value of foreign portfolio  securities
and  against increases in the dollar cost  of foreign securities to be acquired.
As in the case of other types of  options, however, the writing of an option  on
foreign  currency will constitute only a partial  hedge, up to the amount of the
premium received, and these Series could be required to purchase or sell foreign
currencies at  disadvantageous exchange  rates,  thereby incurring  losses.  The
purchase  of an  option on  foreign currency  may constitute  an effective hedge
against fluctuations in exchange rates, although, in the event of rate movements
adverse to  such Series'  position, it  may  forfeit the  entire amount  of  the
premium  plus  related transaction  costs. As  in the  case of  foreign currency
forward exchange contracts,  certain options  on foreign  currencies are  traded
over-the-counter  and involve  risks which  may not  be present  in the  case of
exchange-traded instruments.
    
 
SEGREGATED ACCOUNTS
 
To comply with the 1940 Act, a Series engaging in certain transactions involving
options, futures, reverse  repurchase agreements, delayed  delivery and  forward
contracts  on foreign  currencies will "cover"  its positions  by establishing a
segregated account. These segregated accounts will be established and maintained
with the Fortis Series'  custodian and will contain  only liquid assets such  as
cash, or any security that is not considered restricted or illiquid.
 
   
RESTRICTED AND ILLIQUID SECURITIES
    
 
   
The  Series' policies  and limitations  regarding investments  in restricted and
illiquid securities  are  set  forth  in the  Prospectus  and  in  "--Investment
Restrictions" below.
    
 
   
A security is considered illiquid if it cannot be sold in the ordinary course of
business  within seven days  at approximately the  price at which  it is valued.
Illiquid securities may  offer a  higher yield  than securities  which are  more
readily marketable, but they may not always be marketable on advantageous terms.
    
 
   
The  sale of illiquid securities often requires  more time and results in higher
brokerage charges or dealer discounts and  other selling expenses than does  the
sale  of securities eligible for trading  on national securities exchanges or in
the over-the-counter markets. A Series may be restricted in its ability to  sell
such  securities at a time when Advisers  or a sub-adviser deems it advisable to
do so. In addition, in order to  meet redemption requests, a Series may have  to
sell  other assets, rather than such illiquid securities, at a time which is not
advantageous.
    
 
   
Restricted securities  are  securities which  were  originally sold  in  private
placements  and which have not been registered  under the Securities Act of 1933
(the "1933 Act"). Such securities generally have been considered illiquid, since
they may  be resold  only subject  to statutory  restrictions and  delays or  if
registered under the 1933 Act. In 1990, however, the SEC adopted Rule 144A under
the  1933  Act, which  provides a  safe harbor  exemption from  the registration
requirements of the 1933 Act for resales of restricted securities to  "qualified
institutional  buyers," as defined in the rule. The result of this rule has been
the development of a more liquid  and efficient institutional resale market  for
restricted  securities. Thus,  restricted securities  are no  longer necessarily
illiquid. Some Series  may therefore invest  in Rule 144A  securities and  treat
them  as liquid  when they  have been determined  to be  liquid by  the Board of
Directors or its delegate subject to the oversight of and pursuant to procedures
adopted by the Board  of Directors. Under these  procedures, factors taken  into
account  in determining the liquidity of a security include (a) the frequency of
trades and  quotes  for the  security;  (b) the  number  of dealers  willing  to
purchase  or sell the security and the number of other potential purchasers; (c)
dealer undertakings to make a market in the security; and (d) the nature of  the
security  and the  nature of  the marketplace trades  (e.g., the  time needed to
dispose of the security,  the method of soliciting  offers and the mechanics  of
transfer).  Similar determinations may be made  with respect to commercial paper
issued  in  reliance  on  the  so-called  "private  placement"  exemption   from
registration   under  Section  4(2)  of  the  1933  Act  and  interest-only  and
principal-only  classes  of  mortgage-related  securities  issued  by  the  U.S.
government or its agencies or instrumentalities.
    
 
   
SECURITIES OF OTHER INVESTMENT COMPANIES
    
 
   
Some  Series may  purchase the securities  of open-end  or closed-end investment
companies if such purchases  are in compliance  with the 1940  Act. If a  Series
invests  in securities  of other  investment companies,  the return  on any such
investments will  be reduced  by the  operating expenses,  including  investment
advisory  and administrative  fees, of  such investment  companies. (Such Series
indirectly absorbs  its  pro  rata  share of  the  other  investment  companies'
expenses.)  However, Advisers  believes that at  times the  return and liquidity
features of  these  securities will  be  more  beneficial than  other  types  of
securities.
    
 
WARRANTS OR RIGHTS
 
   
Warrants or rights may be acquired (no more than 5% of net assets, valued at the
lower  of  cost or  market) by  Global  Asset Allocation  Series, S&P  500 Index
Series, Blue  Chip  Stock Series,  International  Stock Series,  Mid  Cap  Stock
Series, Small Cap Value Series, Global Growth Series and Large Cap Growth Series
in  connection with other securities or separately. Warrants provide such Series
with the right  to purchase  at a  later date  other securities  of the  issuer.
Warrants  or rights acquired by  such Series in units  or attached to securities
will be deemed to be without value for purpose of this restriction.
    
 
SHORT SALES AGAINST THE BOX
 
   
Each of Global Bond Series, High  Yield Series, Global Asset Allocation  Series,
Value  Series, Growth & Income Series, S&P 500 Index Series, International Stock
Series, Mid Cap Stock Series, Global Growth Series and Aggressive Growth  Series
may  sell a security to the extent such Series contemporaneously owns or has the
right to obtain securities identical to those sold short without payment of  any
additional  consideration. Such  a short  sale is  referred to  as a  short sale
"against the  box." The  aggregate  market value  of the  underlying  securities
subject  to all outstanding short  sales may not exceed 5%  of the net assets of
the Series.
    
 
                                       40
<PAGE>
   
U.S. TREASURY INFLATION-PROTECTION SECURITIES
    
 
   
Each  Series  may  invest  in  U.S.  Treasury  inflation-protection  securities.
Inflation-protection   securities  are   new  types   of  marketable  book-entry
securities issued by the United States Department of Treasury ("Treasury")  with
a  nominal return linked  to the inflation  rate in prices. Inflation-protection
securities are auctioned and issued on a quarterly basis on the 15th of January,
April, July, and October. Initially, they will be issued as 10-year notes,  with
other  maturities added thereafter. The index  used to measure inflation will be
the non-seasonally adjusted U.S. City Average All Items Consumer Price Index for
All Urban Consumers ("CPI-U").
    
 
   
The value of the principal will be adjusted for inflation, and every six  months
the  security  will pay  interest,  which will  be an  amount  equal to  a fixed
percentage of the inflation-adjusted value  of the principal. The final  payment
of  principal of the security  will not be less than  the original par amount of
the security at issuance.
    
 
   
The principal of the inflation-protection security  will be indexed to the  non-
seasonally  adjusted CPI-U. To calculate  the inflation-adjusted principal value
for a  particular valuation  date, the  value of  the principal  at issuance  is
multiplied by the index ratio applicable to that valuation date. The index ratio
for  any date is the ratio  of the reference CPI applicable  to such date to the
reference CPI applicable to the original issue date. Semiannual coupon  interest
is determined by multiplying the inflation-adjusted principal amount by one-half
of the stated rate of interest on each interest payment date.
    
 
   
Inflation-adjusted  principal or the  original par amount,  whichever is larger,
will be  paid on  the maturity  date  as specified  in the  applicable  offering
announcement.  If at maturity the inflation-adjusted  principal is less than the
original principal value of the security,  an additional amount will be paid  at
maturity  so that  the additional  amount plus  the inflation-adjusted principal
equals the original principal  amount. Some inflation-protection securities  may
be  stripped into principal and  interest components. In the  case of a stripped
security, the holder  of the  stripped principal would  receive this  additional
amount.  The  final  interest  payment,  however, will  be  based  on  the final
inflation-adjusted principal value, not the original par amount.
    
 
   
The reference CPI for the first day of  any calendar month is the CPI-U for  the
third  preceding calendar month. (For example,  the reference CPI for December 1
is the CPI-U  reported for  September of  the same  year, which  is released  in
October.)  The reference CPI for  any other day of the  month is calculated by a
linear interpolation between the  reference CPI applicable to  the first day  of
the  month and the  reference CPI applicable  to the first  day of the following
month.
    
 
   
Any revisions the Bureau of Labor Statistics (or successor agency) makes to  any
CPI-U  number that has been previously released will not be used in calculations
of the value of  outstanding inflation-protection securities.  In the case  that
the  CPI-U  for a  particular  month is  not  reported by  the  last day  of the
following month, the Treasury  will announce an index  number based on the  last
year-over-year   CPI-U  inflation  rate  available.   Any  calculations  of  the
Treasury's payment obligations  on the inflation-protection  security that  need
that  month's CPI-U number will  be based on the  index number that the Treasury
has announced. If the CPI-U  is rebased to a  different year, the Treasury  will
continue  to use the CPI-U  series based on the  base reference period in effect
when the  security was  first issued  as long  as that  series continues  to  be
published.    If   the   CPI-U   is   discontinued   during   the   period   the
inflation-protection security is outstanding, the Treasury will, in consultation
with the  Bureau  of  Labor  Statistics  (or  successor  agency),  determine  an
appropriate substitute index and methodology for linking the discontinued series
with the new price index series. Determinations of the Secretary of the Treasury
in this regard are final.
    
 
   
Inflation-protection  securities will be  held and transferred  in either of two
book-entry systems:  the  commercial  book-entry system  (TRADES)  and  TREASURY
DIRECT.  The securities will be maintained and transferred at their original par
amount, i.e., not at their  inflation-adjusted value. STRIPS components will  be
maintained  and transferred in TRADES  at their value based  on the original par
amount of the fully constituted security.
    
 
INVESTMENT RESTRICTIONS
 
Certain investment restrictions are fundamental  to the operation of the  Series
and  may not be changed except with the approval of the holders of a majority of
the outstanding shares of  the Series affected. For  this purpose, "majority  of
the  outstanding  voting  securities"  means  the  lesser  of  (i)  67%  of  the
outstanding shares of the affected Series present at the meeting of shareholders
if more than 50% of the outstanding shares of the affected Series are present in
person or by  proxy, or  (ii) more  than 50% of  the outstanding  shares of  the
affected  Series. For a discussion of  contract owner voting privileges, see the
accompanying Prospectus pertaining to the Contract.
 
   
INVESTMENT RESTRICTIONS  OF  MONEY  MARKET SERIES,  U.S.  GOVERNMENT  SECURITIES
SERIES,  DIVERSIFIED  INCOME SERIES,  ASSET ALLOCATION  SERIES AND  GROWTH STOCK
SERIES. As a result of the following fundamental investment restrictions, except
as otherwise  noted  below,  Money Market  Series,  U.S.  Government  Securities
Series,  Diversified  Income Series,  Asset Allocation  Series and  Growth Stock
Series will not:
    
 
   
   (1) Purchase securities on margin or  otherwise borrow money or issue  senior
securities,  except that  U.S. Government Securities  Series, Diversified Income
Series  and  Asset  Allocation  Series,  in  accordance  with  their  investment
objectives  and policies, may  purchase securities on  a when-issued and delayed
delivery basis, within the limitations set forth in the Prospectus and Statement
of Additional Information. Fortis Series may also obtain such short-term  credit
as  it needs for the clearance of securities transactions, and may borrow from a
bank, for the account of Money Market Series, U.S. Government Securities Series,
Diversified Income Series, Asset Allocation Series and Growth Stock Series, as a
temporary  measure  to  facilitate  redemptions  (but  not  for  leveraging   or
investment)  in an amount that does not exceed  10% of the value of such Series'
total assets. Investment  securities will not  be purchased for  a Series  while
outstanding bank borrowings exceed 5% of the value of such Series' total assets.
    
 
   (2) Write, purchase or sell puts, calls or combinations thereof.
 
   (3)  Mortgage,  pledge or  hypothecate its  assets, except  in an  amount not
exceeding 10% of the value of its total assets to secure temporary or  emergency
borrowing.
 
   (4) Invest in commodities or commodity contracts.
 
   (5)  Act as  an underwriter  of securities  of other  issuers, except  to the
extent that, in connection with the disposition of portfolio securities,  Fortis
Series may be deemed an underwriter under applicable laws.
 
   
   (6)  Participate on a joint, or a  joint and several, basis in any securities
trading account.
    
 
   (7) Invest in real estate, except a Series may invest in securities issued by
companies owning real estate or interests therein.
 
   (8) Makes loans to other persons.  Repurchase agreements and the purchase  of
publicly  traded  debt obligations  are not  considered to  be "loans"  for this
purpose and may be entered into or purchased by a Series in accordance with  its
investment objectives and policies.
 
   (9)  Concentrate its investments in any  particular industry, except that (i)
it  may  invest  up  to   25%  of  the  value  of   its  total  assets  in   any
 
                                       41
<PAGE>
particular industry, and (ii) there is no limitation with respect to investments
in  obligations  issued or  guaranteed by  the United  States Government  or its
agencies and instrumentalities, or obligations of domestic commercial banks.  As
to  utility  companies, gas,  electric, water  and  telephone companies  will be
considered as  separate  industries.  As to  finance  companies,  the  following
categories  will be  considered as  separate industries:  (a) captive automobile
finance, such as General  Motors Acceptance Corp. and  Ford Motor Credit  Corp.;
(b)  captive equipment finance companies,  such as Honeywell Finance Corporation
and General Electric Credit Corp.; (c) captive retail finance companies, such as
Macy Credit  Corp.  and  Sears  Roebuck  Acceptance  Corp.;  (d)  consumer  loan
companies,   such  as  Beneficial  Finance  Corporation  and  Household  Finance
Corporation; (e)  diversified finance  companies such  as CIT  Financial  Corp.,
Commercial  Credit Corporation and Borg Warner Acceptance Corp.; and (f) captive
oil finance companies, such  as Shell Credit, Inc.,  Mobil Oil Credit Corp.  and
Texaco Financial Services, Inc. [For purposes of this restriction, securities of
each foreign government will be considered a separate "industry".]
 
  (10)  Purchase from or  sell to any  officer, director, or  employee of Fortis
Series, or its adviser  or underwriter, or any  of their officers or  directors,
any securities other than shares of Fortis Series' common stock.
 
  (11)  Make short sales, except for sales "against the box." While a short sale
is made by selling a security the Series does not own, a short sale is  "against
the  box" to the extent that the  Series contemporaneously owns or has the right
to obtain securities identical to those sold short at no added cost.
 
   
  (12) Invest more than 5% of the value of its assets in restricted securities.
    
 
   
The following  non-fundamental investment  restrictions may  be changed  by  the
Board  of  Directors without  shareholder  approval. Money  Market  Series, U.S.
Government Securities Series, Diversified Income Series, Asset Allocation Series
and Growth Stock Series will not:
    
 
   
   (1) Purchase securities of open-end or closed-end investment companies except
in compliance with the 1940 Act.
    
 
   (2) Invest in a company for the purposes of exercising control or management.
 
   (3) Buy or  sell foreign exchange,  except as incidental  to the purchase  or
sale of permissible foreign investments.
 
   (4)  Investment in securities  which would expose  such Series to liabilities
exceeding the amount invested.
 
   (5) Invest in  interests (including  partnership interests) in  oil, gas,  or
other  mineral exploration  or development programs,  except it  may purchase or
sell securities issued by  corporations engaging in oil,  gas, or other  mineral
exploration or development business.
 
   
   (6)  Invest more than an aggregate of 10% of their total assets in restricted
securities (both debt and equity) or in equity securities which are not  readily
marketable.
    
 
   
INVESTMENT  RESTRICTIONS OF  HIGH YIELD  SERIES, VALUE  SERIES, GROWTH  & INCOME
SERIES AND AGGRESSIVE GROWTH  SERIES. As a result  of the following  fundamental
investment  restrictions, except  as otherwise  noted below,  High Yield Series,
Value Series, Growth & Income Series and Aggressive Growth Series will not:
    
 
   (1) Concentrate its investments in  any particular industry, except that  (i)
it  may invest  up to 25%  of the  value of its  total assets  in any particular
industry, and  (ii)  there is  no  limitation  with respect  to  investments  in
obligations issued or guaranteed by the United States Government or its agencies
and  instrumentalities,  or  obligations  of domestic  commercial  banks.  As to
utility  companies,  gas,  electric,  water  and  telephone  companies  will  be
considered  as  separate  industries.  As to  finance  companies,  the following
categories will be  considered as  separate industries:  (a) captive  automobile
finance,  such as General  Motors Acceptance Corp. and  Ford Motor Credit Corp.;
(b) captive equipment finance companies,  such as Honeywell Finance  Corporation
and General Electric Credit Corp.; (c) captive retail finance companies, such as
Macy  Credit  Corp.  and  Sears  Roebuck  Acceptance  Corp.;  (d)  consumer loan
companies,  such  as  Beneficial  Finance  Corporation  and  Household   Finance
Corporation;  (e)  diversified finance  companies such  as CIT  Financial Corp.,
Commercial Credit Corporation and Borg Warner Acceptance Corp.; and (f)  captive
oil  finance companies, such as  Shell Credit, Inc., Mobil  Oil Credit Corp. and
Texaco Financial Services, Inc.
 
   (2) Purchase or sell physical  commodities (such as grains, livestock,  etc.)
or  futures or options contracts  thereon. However, it may  purchase or sell any
forms of financial instruments or contracts that might be deemed commodities.
 
   (3) Invest directly in real estate or interests in real estate; however,  the
Series may invest in interests in real estate investment trusts, debt securities
secured by real estate or interests therein, or debt or equity securities issued
by companies which invest in real estate or interests therein.
 
   (4) Mortgage, pledge, hypothecate, or in any manner transfer, as security for
indebtedness,  any securities  owned or held  by the Series,  provided that this
restriction shall not apply to the transfer of securities in connection with any
permissible  borrowing  or  to   collateral  arrangements  in  connection   with
permissible activities.
 
   (5)  Act as  an underwriter  of securities  of other  issuers, except  to the
extent that, in  connection with  the disposition of  portfolio securities,  the
Series may be deemed an underwriter under applicable laws.
 
   (6) Purchase securities on margin, except that the Series, in accordance with
its   investment  objectives  and   policies,  may  purchase   securities  on  a
when-issued, delayed delivery or forward  commitment basis. The Series may  also
obtain  such  short-term credit  as  it needs  for  the clearance  of securities
transactions and may make margin deposits in connection with futures contracts.
 
   
   (7) Make short sales, except for sales "against the box."
    
 
   (8) Make  loans  to other  persons,  except: (i)  each  Series may  lend  its
portfolio  securities in  an amount not  to exceed 33  1/3% of the  value of its
total assets if  such loans  are secured  by collateral  equal to  at least  the
market  value of  the securities  lent, provided  that such  collateral shall be
limited to cash, securities issued or  guaranteed by the U.S. Government or  its
agencies  or  instrumentalities, certificates  of  deposit or  other high-grade,
short-term obligations or  interest-bearing cash  equivalents; and  (ii) it  may
purchase  debt securities through private  placements (restricted securities) in
accordance with the Series' investment objectives and policies.
 
   (9) Issue senior securities (as  defined in the 1940  Act) other than as  set
forth  in restriction #10 below and except  to the extent that using options and
futures contracts or purchasing or selling securities on a when issued,  delayed
delivery  or  forward  commitment basis  (including  the entering  into  of roll
transactions) may be deemed to constitute issuing a senior security.
 
  (10) Borrow money except from banks for temporary or emergency purposes not in
excess of 33 1/3% of the value of the Series' total assets. The Series will  not
purchase  securities while borrowings (including  "roll" transactions) in excess
of 5% of total assets are outstanding. In the event that the asset coverage  for
the  Series' borrowings falls  below 300%, the Series  will reduce, within three
days (excluding Sundays and holidays), the amount of its borrowings in order  to
provide for 300% asset coverage.
 
                                       42
<PAGE>
   
The  following  non-fundamental investment  restrictions may  be changed  by the
Board of  Directors  without  shareholder approval.  High  Yield  Series,  Value
Series, Growth & Income Series and Aggressive Growth Series will not:
    
 
   
   (1) Purchase securities of open-end or closed-end investment companies except
in compliance with the 1940 Act.
    
 
   (2) Invest in a company for the purposes of exercising control or management.
 
   (3)  Invest in interests (including partnership  interests or leases) in oil,
gas, or other mineral exploration or development programs, except the Series may
purchase or sell  securities issued  by corporations  engaging in  oil, gas,  or
other mineral exploration or development business.
 
   
   (4) Invest more than 15% of their net assets in illiquid securities.
    
 
   
   (5)  Enter into  any options,  futures, or  forward contract  transactions if
immediately thereafter (a) the amount of premiums paid for all options,  initial
margin  deposits on all  futures contracts and/or  options on futures contracts,
and collateral deposited with  respect to forward contracts  held by or  entered
into  by the  Series would exceed  5% of  the value of  the total  assets of the
Series or  (b) the  Series' assets  covering, subject  to, or  committed to  all
options,  futures, and forward  contracts would exceed  20% of the  value of the
total assets  of the  Series. (This  restriction does  not apply  to  securities
purchased on a when-issued, delayed delivery, or forward commitment basis.)
    
 
   
   (6) Invest in real estate limited partnership interests.
    
 
   
   (7)  Purchase  the securities  of any  issuer  if such  purchase at  the time
thereof would cause more than 10% of  the voting securities of any issuer to  be
held by the Series.
    
 
   
INVESTMENT  RESTRICTIONS OF GLOBAL  GROWTH SERIES. As a  result of the following
fundamental investment restrictions, Global Growth Series will not:
    
 
   (1) Concentrate its  investments, that is,  invest 25% or  more of its  total
assets in any particular industry.
 
   (2)  Buy  or  sell  commodities  or  commodity  contracts,  including futures
contracts, other than  within the limitations  set forth in  the Prospectus  and
Statement of Additional Information.
 
   
   (3)  Purchase  or sell  real estate  or  other interests  in real  estate, or
interests in real estate  investment trusts; however,  Global Growth Series  may
invest  in debt securities secured by real estate or interests therein or issued
by corporations which invest in real estate or interests.
    
 
   
   (4) Mortgage, pledge, hypothecate, or in any manner transfer, as security for
indebtedness, any securities  owned or  held by Global  Growth Series,  provided
that  this  restriction  shall  not  apply  to  the  transfer  of  securities in
connection with  any  permissible borrowing  or  to collateral  arrangements  in
connection with permissible activities.
    
 
   
   (5)  Act as  an underwriter  of securities  of other  issuers, except  to the
extent that, in connection with the disposition of portfolio securities,  Global
Growth Series may be deemed an underwriter under applicable laws and except that
Global  Growth  Series may  invest  up to  10%  of the  value  of its  assets in
portfolio securities which  are not registered  under the applicable  securities
laws  of  the country  in  which such  securities are  traded  and for  which no
alternative market is readily available (such securities are referred to  herein
as "restricted securities").
    
 
   
   (6)  Purchase  securities on  margin, except  that  Global Growth  Series, in
accordance with its investment objectives and policies, may purchase  securities
on  a  when-issued, delayed  delivery or  forward  commitment basis,  within the
limitations set forth in the Prospectus and Statement of Additional Information.
Global Growth Series may also obtain such short-term credit as it needs for  the
clearance  of securities transactions and may make margin deposits in connection
with futures contracts.
    
 
   
   (7) Make short sales, except for sales "against the box."
    
 
   (8) Make  loans  to  other  persons, except  that  it  may  purchase  readily
marketable  bonds, debentures, or other debt securities, whether or not publicly
distributed, enter  into  repurchase agreements,  and  make loans  of  portfolio
securities  to an aggregate of 30% of the value of its total assets, measured at
the time any such loan is made.
 
   
   (9) Issue senior securities,  except that Global  Growth Series may  purchase
securities  on a when-issued,  delayed delivery or  forward commitment basis and
enter into roll transactions and  other transactions within the limitations  set
forth  in the  Prospectus and Statement  of Additional Information  which may be
deemed to constitute borrowing.
    
 
   
  (10) Borrow money except from banks for temporary or emergency purposes not in
excess of 33 1/3% of the value of the Series' total assets. Global Growth Series
will not purchase securities while borrowings (including "roll" transactions) in
excess of  5% of  total assets  are outstanding.  In the  event that  the  asset
coverage  for the Series' borrowings falls below 300%, Global Growth Series will
reduce, within three days  (excluding Sundays and holidays),  the amount of  its
borrowings in order to provide for 300% asset coverage.
    
 
   
The  following  non-fundamental investment  restrictions may  be changed  by the
Board of Directors without shareholder approval. Global Growth Series will not:
    
 
   
   (1) Purchase securities of open-end or closed-end investment companies except
in compliance with the 1940 Act.
    
 
   (2) Invest in a company for the purposes of exercising control or management.
 
   (3) Invest in interests (including  partnership interests or leases) in  oil,
gas,  or other  mineral exploration or  development programs,  except the Global
Growth Series may purchase or sell securities issued by corporations engaging in
oil, gas, or other mineral exploration or development business.
 
   (4) Purchase or  retain the securities  of any issuer  if those officers  and
directors   of  Fortis  Series  or  its  investment  adviser  owning  (including
beneficial ownership) individually more than 1/2 of 1% of the securities of such
issuer together  own  (including  beneficial  ownership) more  than  5%  of  the
securities of such issuer.
 
   
   (5)  Invest more than an aggregate of 10% of the value of its total assets in
(a) restricted securities (both debt and equity) or in debt or equity securities
of any issuer which are not readily marketable; (b) repurchase agreements with a
maturity of more than  seven days; and (c)  over-the-counter option and  futures
contracts;  provided further that the Series will not invest more than 5% of its
total assets in restricted securities.
    
 
   
   (6) Enter  into any  options, futures,  or forward  contract transactions  if
immediately  thereafter (a) the amount of premiums paid for all options, initial
margin deposits on all  futures contracts and/or  options on futures  contracts,
and  collateral deposited with  respect to forward contracts  held by or entered
into by the  Series would  exceed 5% of  the value  of the total  assets of  the
Series  or (b)  the Series'  assets covering,  subject to,  or committed  to all
options, futures, and  forward contracts would  exceed 20% of  the value of  the
total  assets  of the  Series. (This  restriction does  not apply  to securities
purchased on a when-issued, delayed delivery, or forward commitment basis.)
    
 
   
   (7) Invest in real estate limited partnership interests.
    
 
                                       43
<PAGE>
   
   (8) Purchase  the securities  of any  issuer  if such  purchase at  the  time
thereof  would cause more than 10% of the  voting securities of any issuer to be
held by the Series.
    
 
   
   (9) Borrow money in excess of 10% of its total assets, except as a  temporary
or  emergency measure. ("Roll" transactions will not be considered borrowing for
purposes of this restriction).
    
 
   
  (10) Will not invest more than 5% of its net assets in warrants, valued at the
lower of cost or market.
    
 
   
INVESTMENT RESTRICTIONS OF  GLOBAL BOND SERIES,  GLOBAL ASSET ALLOCATION  SERIES
AND  INTERNATIONAL  STOCK  SERIES.  As a  result  of  the  following fundamental
investment restrictions, Global Bond Series, Global Asset Allocation Series  and
International Stock Series, will not:
    
 
   (1) Concentrate its investments in any particular industry, except that (i) a
Series  may invest up to 25% of the  value of its total assets in any particular
industry, and  (ii)  there is  no  limitation  with respect  to  investments  in
obligations issued or guaranteed by the United States government or its agencies
and  instrumentalities,  or  obligations  of domestic  commercial  banks.  As to
utility  companies,  gas,  electric,  water  and  telephone  companies  will  be
considered  as  separate  industries.  As to  finance  companies,  the following
categories will be  considered as  separate industries:  (a) captive  automobile
finance,  such as General  Motors Acceptance Corp. and  Ford Motor Credit Corp.;
(b) captive equipment finance companies,  such as Honeywell Finance  Corporation
and General Electric Credit Corp.; (c) captive retail finance companies, such as
Macy  Credit  Corp.  and  Sears  Roebuck  Acceptance  Corp.;  (d)  consumer loan
companies,  such  as  Beneficial  Finance  Corporation  and  Household   Finance
Corporation;  (e) diversified  finance companies,  such as  CIT Financial Corp.,
Commercial Credit Corporation and Borg Warner Acceptance Corp.; and (f)  captive
oil  finance companies, such as  Shell Credit, Inc., Mobil  Oil Credit Corp. and
Texaco Financial Services, Inc. [For purposes of this restriction, securities of
each  foreign  government  or  agency   thereof  will  be  considered   separate
"industries".]
 
   (2)  Purchase or  sell physical  commodities (such  as grains,  livestock, et
cetera) or futures or options contracts thereon; however, a Series may  purchase
or  sell any forms  of financial instruments  or contracts that  might be deemed
commodities.
 
   (3) Invest directly in  real estate or interests  in real estate; however,  a
Series may invest in interests in real estate investment trusts, debt securities
secured by real estate or interests therein, or debt or equity securities issued
by companies that invest in real estate or interests therein.
 
   (4)  Act as  an underwriter  of securities  of other  issuers, except  to the
extent that,  in connection  with  the disposition  of portfolio  securities,  a
Series may be deemed an underwriter under applicable laws.
 
   
   (5)  Purchase securities on  margin or otherwise borrow  money, except that a
Series, in accordance with its investment objectives and policies, may  purchase
securities  on a when-issued, delayed delivery  or forward commitment basis, and
may make margin deposits  in connection with dealing  in commodities or  options
thereon.  A Series also  may obtain such  short-term credit as  it needs for the
clearance of securities transactions, and may borrow from a bank an amount  that
does  not exceed 33 1/3% of  the value of a Series'  total assets. A Series will
not purchase investment securities while outstanding bank borrowings  (including
"roll" transactions) in excess of 5% of its total assets are outstanding. In the
event  that the asset coverage  for a Series' borrowings  falls below 300%, such
Series will  reduce, within  three days  (excluding Sundays  and holidays),  the
amount of its borrowings in order to provide for 300% asset coverage.
    
 
   (6)  Make loans to other persons, except that a Series may lend its portfolio
securities in an amount not to exceed 33  1/3% of the value of its total  assets
(including  the amount lent as  well as the collateral  securing such loans), if
such loans are secured by collateral at  least equal to the market value of  the
securities  lent,  provided  that  such collateral  shall  be  limited  to cash,
government securities, certificates of  deposit or other high-grade,  short-term
obligations   or   interest-bearing  cash   equivalents   (including  repurchase
agreements pertaining to  such securities  or obligations). Loans  shall not  be
deemed  to include  repurchase agreements  or the  purchase or  acquisition of a
portion of  an issue  of  notes, bonds,  debentures  or other  debt  securities,
whether  or not such purchase or acquisition  is made upon the original issuance
of the securities.
 
   (7) Issue senior securities (as  defined in the 1940  Act) other than as  set
forth  in restriction 5 concerning borrowing and except to the extent that using
options  and  futures  contracts  or  purchasing  or  selling  securities  on  a
when-issued,  delayed  delivery  or  forward  commitment  basis  (including  the
entering into of roll transactions) may be deemed to constitute issuing a senior
security.
 
   
The following  non-fundamental investment  restrictions may  be changed  by  the
Board  of  Directors without  shareholder approval.  Global Bond  Series, Global
Asset Allocation Series and International Stock Series will not:
    
 
   
   (1) Purchase securities of open-end or closed-end investment companies except
in compliance with the 1940 Act.
    
 
   (2) Invest in a company for the purposes of exercising control or management.
 
   (3) Invest in interests (including  partnership interests or leases) in  oil,
gas or other mineral exploration or development programs, except it may purchase
or  sell securities issued by corporations engaging in oil, gas or other mineral
exploration or development business.
 
   
   (4) Invest more than 15% of their net assets in illiquid securities.
    
 
   
   (5) Enter  into any  options,  futures or  forward contract  transactions  if
immediately  thereafter the  amount of  premiums paid  for all  options, initial
margin deposits on all  futures contracts and/or  options on futures  contracts,
and  collateral deposited with  respect to forward contracts  held by or entered
into by such Series  would exceed 5% of  the value of the  total assets of  such
Series.   (This  restriction  does  not  apply  to  securities  purchased  on  a
when-issued, delayed delivery or forward commitment basis.)
    
 
   
   (6) Make  short sales,  except for  sales "against  the box"  and except  for
foreign  currency  forward  exchange  contracts  for  hedging  or  cross-hedging
purposes.
    
 
   
   (7) Mortgage,  pledge  or  hypothecate  its  assets,  except  to  the  extent
necessary  to secure permitted borrowings and except for collateral arrangements
in connection with permissible activities.
    
 
   
   (8) Purchase  the securities  of any  issuer  if such  purchase at  the  time
thereof  would cause more than 10% of the  voting securities of any issuer to be
held by the Series.
    
 
   
   (9) Global Asset Allocation  Series and International  Stock Series will  not
invest more than 5% of their net assets in warrants, valued at the lower of cost
or market.
    
 
   
  (10)  Global Asset Allocation  Series and International  Stock Series will not
invest more than 5% of their net assets in warrants, valued at the lower of cost
or market.
    
 
   
INVESTMENT RESTRICTIONS OF S&P 500 INDEX SERIES  AND MID CAP STOCK SERIES. As  a
result  of  the following  fundamental  investment restrictions,  S&P  500 Index
Series and Mid Cap Stock Series will not:
    
 
   (1) Purchase any securities which would cause  more than 25% of the value  of
the  Series' total  assets at the  time of such  purchase to be  invested in the
securities of one or more issuers  conducting their principal activities in  the
same   industry.   (For   purposes   of   this   limitation,   U.S.   Government
 
                                       44
<PAGE>
securities, and state or municipal governments and their political subdivisions,
are not considered members  of any industry. In  addition, this limitation  does
not  apply to investments in domestic  banks, including U.S. branches of foreign
banks and foreign branches of U.S. banks).
 
   
   (2) Borrow money or issue senior securities as defined in the 1940 Act except
that a Series  may borrow  money in  an amount  not exceeding  one-third of  the
Series'  total assets at  the time of  such borrowings. The  purchase or sale of
futures contracts and  related options shall  not be considered  to involve  the
borrowing of money or issuance of senior securities.
    
 
   (3) Make loans or lend securities, if as a result thereof more than one-third
of  the Series' total assets would be subject to all such loans. For purposes of
this limitation debt instruments and repurchase agreements shall not be  treated
as loans.
 
   (4)  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, including
mortgage loans, or securities of companies  that engage in real estate  business
or invest or deal in real estate or interests therein).
 
   (5)  Underwrite securities issued  by any other person,  except to the extent
that the purchase  of securities  and later  disposition of  such securities  in
accordance with the Series' investment program may be deemed an underwriting.
 
   (6)  Purchase  or sell  commodities  except that  the  Series may  enter into
futures contracts  and related  options, forward  currency contracts  and  other
similar instruments.
 
   
The  following  non-fundamental investment  restrictions may  be changed  by the
Board of Directors without  shareholder approval. S&P 500  Index Series and  Mid
Cap Stock Series will not:
    
 
   
   (1)  Sell  securities  short, unless  it  owns  or has  the  right  to obtain
securities equivalent  in kind  and amount  to the  securities sold  short,  and
provided  that transactions  in futures contracts  are not  deemed to constitute
selling short.
    
 
   
   (2) Purchase securities  on margin, except  that the Series  may obtain  such
short-term  credits  as are  necessary for  the  clearance of  transactions, and
provided that margin payments in  connection with futures contracts and  options
on futures contracts shall not constitute purchasing securities on margin.
    
 
   
   (3) Purchase oil, gas or mineral leases.
    
 
   
   (4) Invest more than 15% of their net assets in illiquid securities.
    
 
   
   (5) Purchase securities of open-end or closed-end investment companies except
in compliance with the 1940 Act.
    
 
   
   (6)  Purchase any security while borrowings  representing more than 5% of the
Series' total assets are outstanding.
    
 
   
   (7) Purchase puts, calls, straddles,  spreads and any combination thereof  if
by  reason thereof  the value  of its  aggregate investment  in such  classes of
securities would exceed 5% of its total assets except that: (a) this  limitation
shall  not apply to standby commitments, and (b) this limitation shall not apply
to the Series' transactions in futures contracts and related options.
    
 
   
   (8) Invest more than  25% of the value  of its total assets,  at the time  of
such  purchase, in domestic banks, including  U.S. branches of foreign banks and
foreign branches of U.S. banks.
    
 
   
   (9) Invest in a company for the purposes of exercising control or management.
    
 
   
  (10) Invest more than 5% of their net assets in warrants, valued at the  lower
of cost or market.
    
 
   
Each  of S&P 500 Index Series and Mid Cap Stock Series engages, except as noted,
in the following practices in furtherance of its investment objective:
    
 
   
LOANS OF  PORTFOLIO SECURITIES.  The  Series have  authority to  lend  portfolio
securities   provided  (1)  the  loan  is  secured  continuously  by  collateral
consisting of U.S. Government  securities or cash  or cash equivalents  adjusted
daily to make a market value at least equal to the current market value of these
securities  loaned; (2) the Series may at any  time call the loan and regain the
securities loaned; (3) the Series will receive any interest or dividends paid on
the loaned securities; and (4) the  aggregate market value of securities  loaned
will  not at  any time exceed  one-third of the  total assets of  the Series. In
addition, it is anticipated that the Series may share with the borrower some  of
the  income received on  the collateral for the  loan or that it  will be paid a
premium for the  loan. In  determining whether  to lend  securities, the  Series
considers  all relevant factors and circumstances including the creditworthiness
of the borrower.
    
 
FUTURES CONTRACTS AND OPTIONS. For the  purpose of creating market exposure  for
uncommitted   cash   balances,  reducing   transaction  costs   associated  with
rebalancing the  Series,  facilitating  trading  or  seeking  higher  investment
returns  when a futures contract is priced more attractively than the underlying
security or  the  index  of  the  Series, the  Series  may  enter  into  futures
contracts,  options, and options on futures contracts with respect to securities
in which the Series may invest and indices comprised of such securities.
 
RESTRICTIONS ON THE USE  OF FUTURES CONTRACTS AND  OPTIONS. The Series will  not
enter  into futures  contracts to  the extent  that its  outstanding obligations
under these  contracts would  exceed 10%  of the  Series' total  assets. To  the
extent  that the  Series enters  into futures  contracts and  options on futures
positions that  are  not for  bona  fide hedging  purposes  (as defined  by  the
Commodity Futures Trading Commission), the aggregate initial margin and premiums
on  these positions (excluding  the amount by  which options are "in-the-money")
may not exceed 5% of the Series' net assets.
 
Transactions using options and  futures contracts (other  than options that  the
Series  has purchased) expose the Series to  an obligation to another party. The
Series will not enter into  any such transactions unless  it owns either (1)  an
offsetting  ("covered")  position  in  securities or  other  options  or futures
contracts or (2) cash, receivables and  short-term debt securities with a  value
sufficient  at  all times  to  cover its  potential  obligations not  covered as
provided in (1)  above. The  Series will  comply with  SEC guidelines  regarding
cover  for these instruments and, if the  guidelines so require, set aside cash,
U.S. Government  securities or  other liquid,  high-grade debt  securities in  a
segregated account with its custodian in the prescribed amount.
 
All  options purchased  or written by  the Series  must be listed  on a national
securities or futures exchange or traded in the over-the-counter ("OTC") market.
The Series  will not  purchase or  write OTC  options if,  as a  result of  such
transaction,  the  sum  of  (i)  the market  value  of  outstanding  OTC options
purchased by the  Series, (ii)  the market  value of  the underlying  securities
covered  by outstanding OTC  call options written  by the Series,  and (iii) the
market value of  all other assets  of the Series  that are illiquid  or are  not
otherwise  readily marketable, would exceed 15% of the net assets of the Series,
taken at market  value. However, if  an OTC option  is sold by  the Series to  a
primary U.S. Government securities dealer recognized by the Federal Reserve Bank
of New York and the Series has the unconditional contractual right to repurchase
such  OTC option from the dealer at  a predetermined price, then the Series will
treat as illiquid such amount  of the underlying securities  as is equal to  the
repurchase price less the
 
                                       45
<PAGE>
amount  by which  the option is  "in-the-money" (the  difference between current
market value of  the underlying  security and  the option's  strike price).  The
repurchase  price with  primary dealers  is typically  a formula  price which is
generally based on a multiple  of the premium received  for the option plus  the
amount by which the option is "in-the-money."
 
The  Series may  write only  covered options.  A call  option is  covered if the
Series owns the underlying security or a call option on the same security with a
lower strike price. A put option is covered if the Series segregates cash and/or
short-term debt securities in an amount necessary to pay the strike price of the
option or purchases a put option on  the same underlying security with a  higher
strike price.
 
The  Series will not purchase puts, calls, straddles, spreads or any combination
thereof, if as  a result of  such purchase  the value of  the Series'  aggregate
investment in such securities would exceed 5% of the Series' total assets.
 
   
INVESTMENT RESTRICTIONS OF BLUE CHIP STOCK SERIES AND SMALL CAP VALUE SERIES. As
a  result of the following fundamental  investment restrictions, Blue Chip Stock
Series and Small Cap Value Series will not:
    
 
   (1) Borrow money except  that the Series may  (i) borrow for  non-leveraging,
temporary or emergency purposes and (ii) engage in reverse repurchase agreements
and  make other investments or engage in other transactions, which may involve a
borrowing, in  a manner  consistent with  the Series'  investment objective  and
program,  provided that the combination of (i) and (ii) shall not exceed 33 1/3%
of the value of  the Series' total assets  (including the amount borrowed)  less
liabilities  (other than borrowings) or such  other percentage permitted by law.
Any borrowings which come  to exceed this amount  will be reduced in  accordance
with  applicable laws. The Series may borrow  from banks or other persons to the
extent permitted by applicable law.
 
   (2) Purchase or  sell physical  commodities; except  that it  may enter  into
futures contracts and options thereon.
 
   
   (3)  Purchase the securities of any issuer if,  as a result, more than 25% of
the value of the  Series' total assets  would be invested  in the securities  of
issuers having their principal business activities in the same industry.
    
 
   (4)  Make  loans,  although  the Series  may  (i)  lend  portfolio securities
provided that no such loan  may be made if, as  a result, the aggregate of  such
loans  would  exceed 33  1/3% of  the value  of the  Series' total  assets; (ii)
purchase money market securities and enter into repurchase agreements; and (iii)
acquire publicly-distributed or  privately-placed debt  securities and  purchase
debt.
 
   (5)  Purchase a security if, as a result, with respect to 75% of the value of
its total assets, more than 5% of the value of the Series' total assets would be
invested in  the securities  of a  single issuer,  except securities  issued  or
guaranteed by the U.S. Government or any of its agencies or instrumentalities.
 
   (6)  Purchase a security if, as a result, with respect to 75% of the value of
the Series' total assets, more than 10% of the outstanding voting securities  of
any  issuer  would be  held  by the  Series  (other than  obligations  issued or
guaranteed by the U.S. Government, its agencies or instrumentalities).
 
   (7) 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  in
securities of companies engaged in the real estate business).
 
   
   (8) Issue senior securities except in compliance with the 1940 Act.
    
 
   (9)  Underwrite securities issued by other persons, except to the extent that
the Series  may  be deemed  to  be an  underwriter  within the  meaning  of  the
Securities Act of 1933 in connection with the purchase and sale of its portfolio
securities in the ordinary course of pursuing its investment program.
 
The  following  notes  should be  read  in connection  with  the above-described
fundamental policies. The notes are not fundamental policies.
 
   
With respect to investment restriction (2), the Series do not consider  currency
contracts or hybrid investments to be commodities.
    
 
   
For purposes of investment restriction (3), U.S., state or local governments, or
related   agencies  or  instrumentalities,  are   not  considered  an  industry.
Industries are determined by reference to the classifications of industries  set
forth in the Series' semi-annual and annual reports.
    
 
For  purposes  of  investment  restriction (4),  the  Series  will  consider the
acquisition of a  debt security  to include  the execution  of a  note or  other
evidence of an extension of credit with a term of more than nine months.
 
   
The  following  non-fundamental investment  restrictions may  be changed  by the
Board of  Directors without  shareholder approval.  Blue Chip  Stock Series  and
Small Cap Value Series will not:
    
 
   
   (1)  Purchase additional  securities when  money borrowed  exceeds 5%  of its
total assets.
    
 
   (2) Invest in companies for the purpose of exercising management or control.
 
   (3) Purchase a  futures contract  or an option  thereon if,  with respect  to
positions  in futures  or options  on futures which  do not  represent bona fide
hedging, the aggregate initial margin and premiums on such options would  exceed
5% of the Series' net asset value.
 
   
   (4) Invest more than 15% of their net assets in illiquid securities.
    
 
   
   (5) Purchase securities of open-end or closed-end investment companies except
in compliance with the 1940 Act.
    
 
   (6)  Purchase securities on  margin, except (i) for  use of short-term credit
necessary for clearance  of purchases of  portfolio securities and  (ii) it  may
make  margin deposits in connection with  futures contracts or other permissible
investments.
 
   (7) Mortgage, pledge, hypothecate  or, in any  manner, transfer any  security
owned  by the Series as security for  indebtedness except as may be necessary in
connection with permissible borrowings or investments and then such  mortgaging,
pledging  or hypothecating may not exceed 25% of the Series' total assets at the
time of borrowing or investment.
 
   
   (8) Purchase participations or other direct interests in or enter into leases
with respect to, oil, gas, or other mineral exploration or development programs,
except that Blue Chip Stock  Series may invest up to  5% of its total assets  in
such programs.
    
 
   
   (9)  Invest in puts,  calls, straddles, spreads,  or any combination thereof,
except to the  extent permitted by  the Prospectus and  Statement of  Additional
Information.
    
 
   
  (10)  Invest more than 5% of their net assets in warrants, valued at the lower
of cost or market.
    
 
   
INVESTMENT RESTRICTIONS OF LARGE CAP GROWTH SERIES. As a result of the following
fundamental investment restrictions, the Large Cap Growth Series will not:
    
 
   
   (1) Purchase more than  10% of the outstanding  voting securities of any  one
issuer.
    
 
                                       46
<PAGE>
   
   (2)  Invest 25% or more of the value of its total assets in the same industry
except that this restriction does not  apply to securities issued or  guaranteed
by the United States Government, its agencies and instrumentalities.
    
 
   
   (3) Borrow money or issue senior securities except for temporary or emergency
purposes  in an amount not exceeding 5% of  the value of its total assets at the
time the borrowing is made.
    
 
   
   (4) Pledge, mortgage,  hypothecate or  otherwise encumber any  of its  assets
except  in connection  with the  writing of  call options  and except  to secure
permitted borrowings.
    
 
   
   (5) Make  loans except  through  the purchase  of debt  obligations,  lending
portfolio securities and entering into repurchase agreements.
    
 
   
   (6) Write put options.
    
 
   
   (7)  (a) Purchase or  sell real estate  except that it  may purchase and sell
securities of  companies that  deal in  real estate  or interests  therein;  (b)
purchase  or sell  commodities or  commodity contracts  (other than  stock index
futures contracts), (c) make short sales of securities or purchase securities on
margin except for such short-term credits as may be necessary for the  clearance
of  transactions, or (d)  act as an  underwriter of securities,  except that the
Large Cap  Growth Series  may  acquire restricted  securities or  securities  in
private  placements under circumstances in which,  if such securities were sold,
the Large Cap  Growth Series might  be deemed  to be an  underwriter within  the
meaning of the Securities Act of 1933.
    
 
   
The  following  non-fundamental  investment  policies  and  restrictions  may be
changed by the Board of Directors without shareholder approval. Large Cap Growth
Series will not:
    
 
   
   (1) Invest more  than 20% of  the value  of its total  assets in  convertible
securities.
    
 
   
   (2)  Invest  more than  5% of  the value  of  its total  assets in  rights or
warrants that entitle the holder to buy equity securities.
    
 
   
   (3) Invest more than 15%  of the value of its  total assets in securities  of
foreign issuers.
    
 
   
   (4) Invest more than 15% of its net assets in illiquid securities.
    
 
   
   (5)  Sell  a call  option written  by it  if, as  a result  of the  sale, the
aggregate of  the  Series'  portfolio securities  subject  to  outstanding  call
options  (valued  at the  lower  of the  option price  or  market value  of such
securities) would exceed 15% of the value of the Series' total assets.
    
 
   
   (6) Invest  more  than 10%  of  its total  assets  in put  and  call  options
(including options on market indices).
    
 
   
   (7) Purchase or sell options on stock index futures contracts.
    
 
   
   (8)  Purchase or sell  a stock index future  if, immediately thereafter, more
than 30% of its total assets would be hedged by stock index futures.
    
 
   
   (9) Participate on  a joint, or  joint and several,  basis in any  securities
trading account.
    
 
   
  (10) Invest in companies for the purpose of exercising control.
    
 
   
  (11)  Invest  in  interests  in  oil,  gas  or  other  mineral  exploration or
development programs,  except  that  it  may purchase  and  sell  securities  in
companies  that deal  in oil,  gas or  other mineral  exploration or development
programs.
    
 
   
  (12) Purchase securities of open-end or closed-end investment companies except
in compliance with the 1940 Act.
    
 
   
  (13) Will not invest more than 5% of its net assets in warrants, valued at the
lower of cost or market.
    
 
   
Except for  each Series'  policy  with respect  to  borrowing and  investing  in
illiquid  securities, any  investment restriction or  limitation, fundamental or
otherwise, which involves a maximum percentage of securities or assets shall not
be considered  to  be exceeded  unless  an  excess over  the  percentage  occurs
immediately  after an  acquisition of securities  or utilization  of assets, and
such excess results therefrom.
    
 
The insurance laws  and regulations  of various states  could impose  additional
restrictions  on the  investments of  the various  Series. One  such restriction
currently prohibits the Separate Accounts  from acquiring the voting  securities
of  any issuer  if, as a  result of  the acquisition, the  Separate Accounts and
Fortis Benefits, in the aggregate,  will own more than  10% of the total  issued
and  outstanding voting securities of  the issuer. Another restriction currently
prohibits the  underlying Series  of the  Separate Accounts  from acquiring  the
securities  of  any issuer,  other than  securities issued  or guaranteed  as to
principal and interest  by the  United States Government,  if immediately  after
such acquisition, the value of the investment together with prior investments in
the  security would  exceed 10%  of the  value of  the underlying  Series of the
Separate Accounts' total assets.
 
RISK FACTORS
 
RISKS OF TRANSACTIONS IN HIGH-YIELDING SECURITIES. Participation in  lower-rated
securities transactions generally involves greater returns in the form of higher
average  yields. However,  participation in  such transactions  involves greater
risks, often  related  to  sensitivity  to  interest  rates,  economic  changes,
solvency, and relative liquidity in the secondary trading market.
 
Yields  on high yield securities  will fluctuate over time.  The prices of high-
yielding securities  have been  found  to be  less  sensitive to  interest  rate
changes  than higher-rated investments,  but more sensitive  to adverse economic
changes or individual corporate developments. Also, during an economic  downturn
or  substantial period  of rising  interest rates  highly leveraged  issuers may
experience financial  stress  which  would adversely  affect  their  ability  to
service  their  principal and  interest payment  obligations, to  meet projected
business goals, and to obtain additional financing. If the issuer of a  security
held  by the Diversified  Income Series, High Yield  Series, or Asset Allocation
Series defaulted, such Series may incur additional expenses to seek recovery. In
addition, periods of economic uncertainty and changes can be expected to  result
in  increased volatility of  market prices of  high-yielding securities and such
Series' asset  value.  Furthermore,  in the  case  of  high-yielding  securities
structured  as zero coupon or payment  in kind securities ("PIKs"), their market
prices are affected  to a greater  extent by interest  rate changes and  thereby
tend  to be more volatile than securities which pay interest periodically and in
cash.
 
High-yielding securities  present  risks  based  on  payment  expectations.  For
example,  high-yielding securities may contain redemption or call provisions. If
an issuer exercises these provisions in a declining interest rate market,  these
Series likely would have to replace the security with a lower-yielding security,
resulting  in  a decreased  return  for investors.  Conversely,  a high-yielding
security's value will  decrease in a  rising interest rate  market, as will  the
value  of  such  Series'  assets.  If  such  Series  experience  unexpected  net
redemptions, this may force them to sell their high-yielding securities, without
regard to their investment merits, thereby decreasing the asset base upon  which
the Series' expenses can be spread and possibly reducing the rate of return.
 
To  the extent that there is no  established secondary market, there may be thin
trading of high-yielding securities.  This may adversely  affect the ability  of
the  Board of  Directors to accurately  value high-yielding  securities and such
Series' assets and such Series' ability to dispose of the securities. Securities
valuation   becomes   more    difficult   and   judgment    plays   a    greater
 
                                       47
<PAGE>
   
role  in valuation  because there  is less  reliable, objective  data available.
Adverse publicity and investor perceptions, whether or not based on  fundamental
analysis,  may decrease  the values  and liquidity  of high-yielding securities,
especially in  a  thinly traded  market.  Illiquid or  restricted  high-yielding
securities   purchased  by   such  Series   may  involve   special  registration
responsibilities,  liabilities   and   costs,  and   liquidity   and   valuation
difficulties.
    
 
New  laws and proposed new  laws could have an adverse  impact on the market for
such securities.  As  examples, recent  legislation  requires  federally-insured
savings  and  loan associations  to  divest their  investments  in high-yielding
securities and pending proposals are designed to limit the use, or tax and other
advantages of high-yielding securities. The  new legislation and the  proposals,
if  enacted, could have an  adverse effect on these  Series' net asset value and
investment  practices,  with  the  extent  of  the  impact  depending  upon  the
composition of such Series at that time.
 
Certain  risks  are associated  with  applying credit  ratings  as a  method for
evaluating high-yielding securities.  For example, credit  ratings evaluate  the
safety  of  principal and  interest  payments, not  market  value risk  of high-
yielding securities. Since credit rating agencies may fail to timely change  the
credit  ratings to reflect subsequent events, Advisers continuously monitors the
issuers of high-yielding  securities held by  these Series to  determine if  the
issuers  will have sufficient  cash flow and profits  to meet required principal
and interest payments, and  to assure the securities'  liquidity so such  Series
can  meet redemption  requests. The achievement  of the  investment objective of
such Series may be more dependent upon Advisers' own credit analysis than is the
case for  higher  quality bonds.  Also,  these  Series may  retain  a  portfolio
security  whose  rating has  been changed  if the  security otherwise  meets the
Series' investment objectives and investment criteria.
 
   
RISKS OF INVESTING IN  FOREIGN SECURITIES. Investing  in securities of  non-U.S.
companies  may  entail  additional  risks due  to  the  potential  political and
economic  instability  of   certain  countries  and   risks  of   expropriation,
nationalization,  confiscation,  or the  imposition  of restrictions  on foreign
investment and  on  repatriation of  capital  invested.  In the  event  of  such
expropriation,  nationalization,  or  other confiscation,  by  any  country, the
Series could lose its entire investment  in any such country. Certain  countries
prohibit  or  impose substantial  restrictions on  investments in  their capital
markets, particularly  their equity  markets, by  foreign entities  such as  the
Series.  As illustrations, certain countries require governmental approval prior
to investments by foreign persons, or limit the amount of investment by  foreign
persons  in a particular company, or limit  the investment by foreign persons to
only a specific class of securities of a company that may have less advantageous
terms than  securities  of the  company  available for  purchase  by  nationals.
Moreover,  the national  policies of  certain countries  may restrict investment
opportunities in issuers or industries  deemed sensitive to national  interests.
In  addition, some countries require  governmental approval for the repatriation
of investment income, capital,  or the proceeds of  securities sales by  foreign
investors.  A Series, particularly  Global Bond Series,  Global Asset Allocation
Series, International Stock Series and Global Growth Series, could be  adversely
affected by delays in, or a refusal to grant, any required governmental approval
for  repatriation, as well as by the  application to it of other restrictions on
investments.
    
 
Foreign companies are not generally subject to uniform accounting, auditing, and
financial reporting standards or to other regulatory requirements comparable  to
those  applicable to U.S. companies.  Most of the securities  held by the Global
Bond  Series,  Global  Asset  Allocation  Series,  Global  Growth  Series,   and
International  Stock Series will not be registered with the SEC or regulators of
any foreign  country, nor  will the  issuers  thereof be  subject to  the  SEC's
reporting   requirements.  Thus,  there  will   be  less  available  information
concerning foreign issuers of  securities held by the  Series than is  available
concerning  U.S.  issuers. In  instances where  the  financial statements  of an
issuer are  not deemed  to reflect  accurately the  financial situation  of  the
issuer,  the  Series  will  take  appropriate  steps  to  evaluate  the proposed
investment, which may include on-site inspection of the issuer, interviews  with
its   management  and   consultations  with  accountants,   bankers,  and  other
specialists.
 
   
Because Global Bond Series, Global Asset Allocation Series, International  Stock
Series  and Global  Growth Series will  each invest  at least a  majority of its
total assets  in the  securities of  foreign issuers  which are  denominated  in
foreign  currencies, the  strength or weakness  of the U.S.  dollar against such
foreign currencies may account for part of the Series' investment performance. A
decline in the  value of any  particular currency against  the U.S. dollar  will
cause  a decline in the U.S. dollar  value of the Series' holdings of securities
denominated in such currency  and, therefore, will cause  an overall decline  in
the  Series' net asset value and any  net investment income and capital gains to
be distributed in U.S. dollars to shareholders of such Series.
    
 
The rate of exchange between the U.S. dollar and other currencies is  determined
by  several factors including  the supply and  demand for particular currencies,
central bank efforts to support particular currencies, the movement of  interest
rates,  the pace of business activity in  certain other countries, and the U.S.,
and other economic and financial conditions affecting the world economy.
 
   
Although Global Bond Series, Global Asset Allocation Series, International Stock
Series and Global Growth Series  each values its assets  daily in terms of  U.S.
dollars,  each such Series  does not intend  to convert its  holdings of foreign
currencies into U.S. dollars on a daily basis. These Series will do so from time
to time, and  investors should  be aware of  the costs  of currency  conversion.
Although  foreign exchange dealers do  not charge a fee  for conversion, they do
realize a profit based  on the difference (the  "spread") between the prices  at
which  they are buying and selling various  currencies. Thus, a dealer may offer
to sell a foreign currency  to the Series at one  rate, while offering a  lesser
rate of exchange should the Series desire to sell that currency to the dealer.
    
 
Securities  of many  foreign issuers  may be less  liquid and  their prices more
volatile than  securities  of  comparable U.S.  issuers.  In  addition,  foreign
securities  exchanges  and brokers  are generally  subject to  less governmental
supervision and regulation  than in  the U.S., and  foreign securities  exchange
transactions  are  usually subject  to  fixed commissions,  which  are generally
higher than negotiated  commissions on U.S.  transactions. In addition,  foreign
securities  exchange transactions may be subject to difficulties associated with
the settlement  of  such transactions.  Delays  in settlement  could  result  in
temporary  periods when  assets of  the Series are  uninvested and  no return is
earned thereon. The inability of the Series to make intended security  purchases
due   to  settlement  problems  could  cause   the  Series  to  miss  attractive
opportunities. Inability to dispose  of a portfolio  security due to  settlement
problems  either could result in losses to the Series due to subsequent declines
in value of the portfolio security or, if the Series has entered into a contract
to sell the security, could result  in possible liability to the purchaser.  The
Series  will consider such  difficulties when determining  the allocation of the
Series' assets, although the Series does not believe that such difficulties will
have a material adverse effect on the portfolio trading activities.
 
   
The Series'  net  investment income  from  foreign  issuers may  be  subject  to
non-U.S.  withholding taxes, thereby reducing the Series' net investment income.
See "Taxation" in the Prospectus.
    
 
RISKS OF INVESTING IN  ILLIQUID SECURITIES. The sale  of restricted or  illiquid
securities  often requires  more time  and results  in higher  brokerage charges
 
                                       48
<PAGE>
or dealer discounts and other selling expenses than does the sale of  securities
eligible for trading on national securities exchanges or in the over-the-counter
markets.  Restricted  securities  often  sell  at  a  price  lower  than similar
securities that are not subject to restrictions on resale.
 
   
RISKS   OF   TRANSACTIONS   IN   OPTIONS,   FUTURES   CONTRACTS   AND    FORWARD
CONTRACTS.  Although  Global  Bond  Series,  High  Yield  Series,  Global  Asset
Allocation Series, International Stock Series,  Mid Cap Stock Series, Small  Cap
Value  Series,  Global Growth  Series, Large  Cap  Growth Series  and Aggressive
Growth Series  may enter  into  transactions in  Futures Contracts,  Options  on
Futures  Contracts, Currency Contracts,  and certain options  solely for hedging
purposes, their  use  does  involve  certain  risks.  For  example,  a  lack  of
correlation  between the  index or  instrument underlying  an option  or futures
contract and  the assets  being hedged  or unexpected  adverse price  movements,
could  render such  Series' hedging  strategy unsuccessful  and could  result in
losses. These Series also may enter  into transactions in options on  securities
and  indexes  of  securities for  other  than hedging  purposes,  which involves
greater risk. In  addition, there can  be no assurance  that a liquid  secondary
market  will  exist for  any  contract purchased  or  sold, such  Series  may be
required to maintain a position until exercise or expiration, which could result
in losses.
    
 
Transactions in options,  Futures Contracts, Options  on Futures Contracts,  and
Currency  Contracts may be entered into  on United States exchanges regulated by
the SEC  or  the  Commodity  Futures  Trading Commission,  as  well  as  in  the
over-the-counter  market and on  foreign exchanges. In  addition, the securities
underlying options and Futures Contracts may include domestic as well as foreign
securities. Investors  should  recognize  that  transactions  involving  foreign
securities  or  foreign currencies,  and  transactions entered  into  in foreign
countries, may involve  considerations and risks  not typically associated  with
investing in U.S. markets.
 
DIRECTORS AND EXECUTIVE OFFICERS
 
   
The names, addresses, principal occupations, and other affiliations of directors
and executive officers of Fortis Series are given below. All positions have been
held at least five years unless otherwise stated.
    
 
   
<TABLE>
<CAPTION>
                                            POSITION WITH
       NAME AND ADDRESS            AGE      FORTIS SERIES       PRINCIPAL OCCUPATION AND AFFILIATIONS DURING PAST 5 YEARS
- ------------------------------     ---     ---------------     ------------------------------------------------------------
<S>                                <C>     <C>                 <C>
Richard W. Cutting                 66      Director            Certified public accountant and financial consultant.
137 Chapin Parkway
Buffalo, New York
Allen R. Freedman*                 57      Director            Chairman and Chief Executive Officer of Fortis, Inc.; a
One Chase Manhattan Plaza                                      Managing Director of Fortis International, N. V.
New York, New York
Dr. Robert M. Gavin                57      Director            President, Cranbrook Education Community, Bloomfield Hills,
380 Lone Pine Road                                             MI. Prior to July 1996, President, Macalester College, St.
Bloomfield Hills, MI                                           Paul, MN.
Jean L. King                       53      Director            President, Communi-King, a communications consulting firm.
12 Evergreen Lane
St. Paul, Minnesota
Dean C. Kopperud*                  45      President and       Chief Executive Officer and a Director of Advisers,
500 Bielenberg Drive                       Director            President and a Director of Investors, President of Fortis
Woodbury, Minnesota                                            Financial Group, a Director of Fortis Benefits Insurance
                                                               Company and a Senior Vice President of Time Insurance
                                                               Company.
Edward M. Mahoney                  67      Director            Retired. Prior to December 1994, Chairman, Chief Executive
2760 Pheasant Road                                             Officer and a Director of Advisers and Investors, Senior
Excelsior, Minnesota                                           Vice President and a Director of Fortis Benefits Insurance
                                                               Company, and Senior Vice President of Time Insurance
                                                               Company.
Robb L. Prince                     56      Director            Financial and Employee Benefit Consultant. Prior to July
5108 Duggan Plaza                                              1995, Vice President and Treasurer, Jostens, Inc., a
Edina, Minnesota                                               producer of products and services for the youth, education,
                                                               sports award, and recognition markets.
Leonard J. Santow                  61      Director            Principal, Griggs & Santow, Incorporated, economic and
75 Wall Street                                                 financial consultants.
21st Floor
New York, New York
Joseph M. Wikler                   56      Director            Investment consultant and private investor. Prior to 1994,
12520 Davan Drive                                              Director of Research, Chief Investment Officer, Principal
Silver Spring, Maryland                                        and a Director, The Rothschild Co., Baltimore, MD.
Gary N. Yalen                      55      Vice President      President and Chief Investment Officer of Advisers (since
One Chase Manhattan Plaza                                      1995), a Director of Advisers and Senior Vice President,
New York, New York                                             Investments, Fortis, Inc. Prior to 1996, President and Chief
                                                               Investment Officer, Fortis Asset Management, a former
                                                               division of Fortis, Inc.
Howard G. Hudson                   60      Vice President      Executive Vice President and Head of Fixed Income
One Chase Manhattan Plaza                                      Investments of Advisers since 1995. Prior to 1996, Senior
New York, New York                                             Vice President, Fixed Income, Fortis Asset Management.
</TABLE>
    
 
                                       49
<PAGE>
   
<TABLE>
<CAPTION>
                                            POSITION WITH
       NAME AND ADDRESS            AGE      FORTIS SERIES       PRINCIPAL OCCUPATION AND AFFILIATIONS DURING PAST 5 YEARS
- ------------------------------     ---     ---------------     ------------------------------------------------------------
<S>                                <C>     <C>                 <C>
Lucinda S. Mezey                   50      Vice President      Executive Vice President and Head of Equity Investments of
One Chase Manhattan Plaza                                      Advisers since October 1997. From 1995 to October 1997,
New York, New York                                             Chief Investment Officer, Alex Brown Capital Advisory and
                                                               Trust Co., Baltimore, MD and prior to 1995, Senior Vice
                                                               President and Head of Equity Investments, PNC Bank,
                                                               Philadelphia, PA.
James S. Byrd                      46      Vice President      Executive Vice President and a Director of Advisers. Prior
5500 Wayzata Boulevard                                         to 1995, Vice President of Advisers and of Investors.
Golden Valley, Minnesota
Nicholas L. M. de Peyster          31      Vice President      Vice President of Advisers since August 1995. Prior to 1996,
One Chase Manhattan Plaza                                      Vice President, Equities, Fortis Asset Management.
New York, New York
Charles J. Dudley                  38      Vice President      Vice President of Advisers and Fortis Asset Management since
One Chase Manhattan Plaza                                      1995. Prior to 1995, Senior Vice President, Sun America
New York, New York                                             Asset Management, Los Angeles, CA.
Maroun M. Hayek                    49      Vice President      Vice President of Advisers since 1995. Prior to 1996, Vice
One Chase Manhattan Plaza                                      President, Fixed Income, Fortis Asset Management.
New York, New York
Robert C. Lindberg                 45      Vice President      Vice President of Advisers.
One Chase Manhattan Plaza
New York, New York
Charles L. Mehlhouse               55      Vice President      Vice President of Advisers. Prior to March 1996, Portfolio
One Chase Manhattan Plaza                                      Manager, Marshall & Ilsley Bank Corporation, Milwaukee, WI.
New York, New York
Kevin J. Michels                   46      Vice President      Vice President of Advisers since 1995. Prior to 1996, Vice
One Chase Manhattan Plaza                                      President, Administration, Fortis Asset Management.
New York, New York
Christopher J. Pagano              34      Vice President      Vice President of Advisers since 1996. Prior to March 1996,
One Chase Manhattan Plaza                                      Government Strategist, Merrill Lynch, New York, NY.
New York, New York
Michael J. Romanowski              47      Vice President      Vice President of Advisers since March 1998. From October
One Chase Manhattan Plaza                                      1995 to March 1998, Portfolio Manager, Value Line, New York,
New York, New York                                             NY and prior to October 1995, securities analyst, Conning &
                                                               Co., Hartford, CT.
Christopher J. Woods               37      Vice President      Vice President of Advisers since 1995. Prior to 1996, Vice
One Chase Manhattan Plaza                                      President, Fixed Income, Fortis Asset Management.
New York, New York
Robert W. Beltz, Jr.               48      Vice President      Vice President--Securities Operations of Advisers and
500 Bielenberg Drive                                           Investors.
Woodbury, Minnesota
Peggy L. Ettestad                  40      Vice President      Senior Vice President, Operations of Advisers since March
500 Bielenberg Drive                                           1997. Prior to March 1997, Vice President, G.E. Capital
Woodbury, MN                                                   Fleet Services, Minneapolis, MN.
Dickson W. Lewis                   48      Vice President      Senior Vice President, Marketing and Sales of Advisers since
500 Bielenberg Drive                                           July 1997. From 1993 to July 1997, President and Chief
Woodbury, Minnesota                                            Executive Officer, Hedstrom/Blessing, Inc., Minneapolis, MN.
Tamara L. Fagely                   39      Vice President      Vice President of Advisers and Investors.
500 Bielenberg Drive                       and Treasurer
Woodbury, Minnesota
David A. Peterson                  55      Vice President      Vice President and Assistant General Counsel, Fortis
500 Bielenberg Drive                                           Benefits Insurance Company.
Woodbury, Minnesota
Scott R. Plummer                   38      Vice President      Vice President, Associate General Counsel and Assistant
500 Bielenberg Drive                                           Secretary of Advisers. Prior to September 1993, Attorney,
Woodbury, Minnesota                                            Zelle & Larson, Minneapolis, MN.
Rhonda J. Schwartz                 39      Vice President      Since January 1996, Senior Vice President and General
500 Bielenberg Drive                                           Counsel of Advisers, Senior Vice President and General
Woodbury, Minnesota                                            Counsel, Life and Investment Products, Fortis Benefits
                                                               Insurance Company and Vice President and General Counsel,
                                                               Life and Investment Products, Time Insurance Company. From
                                                               1993 to January 1996, Vice President and General Counsel,
                                                               Fortis, Inc.
</TABLE>
    
 
                                       50
<PAGE>
   
<TABLE>
<CAPTION>
                                            POSITION WITH
       NAME AND ADDRESS            AGE      FORTIS SERIES       PRINCIPAL OCCUPATION AND AFFILIATIONS DURING PAST 5 YEARS
- ------------------------------     ---     ---------------     ------------------------------------------------------------
<S>                                <C>     <C>                 <C>
Melinda S. Urion                   45      Vice President      Since December 1997, Senior Vice President and Chief
500 Bielenberg Drive                                           Financial Officer of Advisers. Prior to December 1997,
Woodbury, Minnesota                                            Senior Vice President of Finance and Chief Financial
                                                               Officer, American Express Financial Corporation; prior to
                                                               March 1995, Corporate Controller, American Express Financial
                                                               Corporation and prior to 1994, Controller and Treasurer, IDS
                                                               Life Insurance Company, Minneapolis, MN.
Michael J. Radmer                  52      Secretary           Partner, Dorsey & Whitney LLP, the Fund's General Counsel.
220 South Sixth Street
Minneapolis, Minnesota
</TABLE>
    
 
- ------------------------------------------------
   
*Mr.  Kopperud is  an "interested  person" (as  defined under  the 1940  Act) of
 Fortis Series, Advisers and Investors primarily because he is an officer and  a
 director  of each.  Mr. Freedman  is an  "interested person"  of Fortis Series,
 Advisers and Investors because  he is Chairman and  Chief Executive Officer  of
 Fortis,  Inc. ("Fortis"),  the parent company  of Advisers  and indirect parent
 company of Investors.
    
 
- ------------------------------------------------
 
   
Each director who is not affiliated with Advisers or Investors receives fees  of
$700  per  month,  $100 per  meeting  attended  and $100  per  committee meeting
attended  (and  reimbursement  of  travel  expenses  to  attend  meetings.)  The
following table sets forth the compensation received by each director during the
fiscal  year ended December 31, 1997, as well as the total compensation received
by each director from Fortis Series and all other open-end investment  companies
managed  by Advisers during the fiscal year ended December 31, 1997. Neither Mr.
Freedman, who is an officer of the parent company of Advisers, nor Mr. Kopperud,
who is an officer of Advisers and Investors, received any such compensation  and
they  are  not included  in the  table.  No executive  officer of  Fortis Series
received compensation from Fortis Series  during the fiscal year ended  December
31, 1997.
    
 
   
<TABLE>
<CAPTION>
                               COMPENSATION     TOTAL COMPENSATION
                                FROM FORTIS     FROM FUND COMPLEX
         DIRECTOR                 SERIES        PAID TO DIRECTOR*
<S>                          <C>                <C>
- ------------------------------------------------------------------
Richard W. Cutting               $   9,000          $   31,200
Dr. Robert M. Gavin                  9,000              31,200
Jean L. King                         9,734              32,200
Edward M. Mahoney                    9,000              31,200
Robb L. Prince                       9,834              33,200
Leonard J. Santow                    8,900              30,200
Joseph M. Wikler                     9,000              31,200
</TABLE>
    
 
- --------------------------
   
*The  Fund Complex  consists of  10 registered  investment companies  managed by
 Advisers. All of  the above  officers and  directors also  are officers  and/or
 directors of each such open-end and closed-end investment company.
    
 
   
As  of March 31, 1998,  less than 1% of the  outstanding shares of Fortis Series
were attributable to Contracts owned of record or beneficially by the  directors
and  executive  officers  as  a  group;  the  directors  and  executive officers
otherwise do not own any of  the outstanding shares of Fortis Series.  Directors
Kopperud,  Mahoney, Prince and  Gavin are members of  the Executive Committee of
the Board of Directors.  While the Executive Committee  is authorized to act  in
the intervals between regular board meetings with full capacity and authority of
the  full Board of Directors, except as limited  by law, it is expected that the
Committee will meet at least twice a year.
    
 
INVESTMENT ADVISORY AND OTHER SERVICES
 
GENERAL
 
   
Fortis Advisers, Inc. ("Advisers") has  been the investment adviser and  manager
of  Fortis Series since Fortis Series  began business in 1986. Fortis Investors,
Inc. ("Investors") acts as Fortis Series' underwriter. Both act as such pursuant
to written agreements periodically approved by the directors or shareholders  of
Fortis Series. The address of both Advisers and Investors is P.O. Box 64284, St.
Paul, MN 55164.
    
 
   
As  of March 31, 1998, Advisers managed thirty-one investment company portfolios
with combined net assets over $6 billion.
    
 
CONTROL AND MANAGEMENT OF ADVISERS AND INVESTORS
 
Fortis owns 100% of the outstanding voting securities of Advisers, and  Advisers
owns all of the outstanding voting securities of Investors.
 
   
Fortis,  located in New York, New York, is a wholly owned subsidiary of AMEV/VSB
1990 N.V. ("AMEV/VSB 1990").
    
 
AMEV/VSB 1990 is a  corporation organized under the  laws of The Netherlands  to
serve  as the holding company for all U.S. operations and is owned 50% by Fortis
AMEV and 50% by Fortis AG ("Group AG"). AMEV/VSB 1990 owns a group of  companies
active in insurance, banking and financial services, and real estate development
in  The  Netherlands,  the United  States,  Western Europe,  Australia,  and New
Zealand.
 
   
Fortis AMEV  is  a  diversified  financial  services  company  headquartered  in
Utrecht,  The Netherlands, where its insurance  operations began in 1847. Fortis
AG is  a  diversified  financial services  company  headquartered  in  Brussels,
Belgium,  where its insurance operations  began in 1824. N.V.  AMEV and Group AG
own a group of companies  (of which AMEV/VSB 1990  is one) active in  insurance,
banking  and financial services, and real estate development in The Netherlands,
Belgium, the United States, Western Europe and the Pacific Rim.
    
 
INVESTMENT ADVISORY AND MANAGEMENT AGREEMENT
 
   
Advisers acts as  investment adviser  and manager of  each of  the Series  under
separate  Investment Advisory  and Management  Agreements. These  agreements are
individually referred  to as  an  "Agreement" and  collectively referred  to  as
"Agreements." The Agreements will terminate automatically
    
 
                                       51
<PAGE>
in  the event of their assignment. In addition, the Agreements are terminable at
any time, without penalty,  by the Board  of Directors or,  with respect to  any
particular Series, by vote of a majority of the outstanding voting securities of
the applicable Series, on not more than 60 days' written notice to Advisers, and
by  Advisers on 60 days' notice to Fortis Series. Unless sooner terminated, each
Agreement shall continue in effect for  more than two years after its  execution
only  so long as such continuance is  specifically approved at least annually by
either the Board of Directors or, with respect to any particular Series, by vote
of a  majority of  the outstandingvoting  securities of  the applicable  Series,
provided that in either event such continuance is also approved by the vote of a
majority  of the directors who are not  parties to such Agreement, or interested
persons of such parties, cast in person  at a meeting called for the purpose  of
voting on such approval.
 
   
The  Agreements collectively provide  for an investment  advisory and management
fee calculated as described in the following table.
    
 
   
<TABLE>
<CAPTION>
                                                                 ANNUAL
                                                               INVESTMENT
                                                              ADVISORY AND
           SERIES                  AVERAGE NET ASSETS        MANAGEMENT FEE
- ----------------------------  ----------------------------  ----------------
<S>                           <C>                           <C>
Money Market Series           For the first $500 million          .30%
                              For assets over $500 million        .25%
U.S. Government Securities    For the first $50 million           .50%
Series                        For assets over $50 million         .45%
Diversified Income Series     For the first $50 million           .50%
                              For assets over $50 million         .45%
Global Bond Series            For the first $100 million          .75%
                              For assets over $100 million        .65%
High Yield Series             For the first $250 million          .50%
                              For assets over $250 million        .45%
Global Asset Allocation       For the first $100 million          .90%
Series                        For assets over $100 million        .85%
Asset Allocation Series       For the first $250 million          .50%
                              For assets over $250 million        .45%
Value Series                  For the first $100 million          .70%
                              For assets over $100 million        .60%
Growth & Income Series        For the first $100 million          .70%
                              For assets over $100 million        .60%
S&P 500 Index Series          All levels of assets                .40%
Blue Chip Stock Series        For the first $100 million          .90%
                              For assets over $100 million        .85%
International Stock Series    For the first $100 million          .85%
                              For assets over $100 million        .80%
Mid Cap Stock Series          For the first $100 million          .90%
                              For the next $150 million           .85%
                              For assets over $250 million        .80%
Small Cap Value Series        For the first $50 million           .90%
                              For assets over $50 million         .85%
Global Growth Series          For the first $500 million          .70%
                              For assets over $500 million        .60%
Large Cap Growth Series       For the first $100 million          .90%
                              For the next $100 million           .85%
                              For assets over $200 million        .80%
Growth Stock Series           For the first $100 million          .70%
                              For assets over $100 million        .60%
Aggressive Growth Series      For the first $100 million          .70%
                              For assets over $100 million        .60%
</TABLE>
    
 
   
During the fiscal years ended December 31, 1995, 1996 and 1997, the Series  paid
the following investment advisory and management fees to Advisers.
    
 
   
<TABLE>
<CAPTION>
                                               YEAR ENDED DECEMBER 31,
                                        -------------------------------------
SERIES                                     1995         1996         1997
- --------------------------------------  -----------  -----------  -----------
<S>                                     <C>          <C>          <C>
Money Market..........................  $   122,669  $   157,756  $   191,433
U.S. Government Securities............      809,341      786,612      687,529
Diversified Income....................      486,523      503,938      488,855
Global Bond(2)........................       72,526      131,386      149,694
High Yield............................      105,511      171,148      258,195
Global Asset Allocation(2)............      107,500      258,678      406,583
Asset Allocation......................    1,484,851    1,794,647    2,102,625
Value(1)..............................       *            32,997      230,143
Growth & Income.......................      247,814      660,575    1,250,461
S&P 500 Index(1)......................       *            34,900      251,081
Blue Chip Stock(1)....................       *            66,780      407,113
International Stock(2)................      102,257      317,951      571,117
Mid Cap Stock.........................       *            *            *
Small Cap Value.......................       *            *            *
Global Growth.........................    1,210,019    1,888,142    2,416,410
Large Cap Growth......................       *            *            *
Growth Stock..........................    2,873,197    3,734,829    4,268,503
Aggressive Growth.....................      197,016      535,835      735,430
</TABLE>
    
 
- --------------------------
   
* Not in existence during this period.
    
   
(1) Inception date: May 1, 1996.
    
   
(2) Inception date: January 3, 1995.
    
 
   
Advisers,  at  its own  expense,  furnishes suitable  office  space, facilities,
equipment, administrative services, and clerical  and other personnel as may  be
required  for the management of  the affairs and business  of Fortis Series, and
acts as Fortis Series' registrar, transfer agent, and dividend disbursing agent.
Fortis Series pays all its expenses which are not expressly assumed by  Advisers
or  Investors. These expenses include, among others, the investment advisory and
management fee, the fees and expenses of directors and officers of Fortis Series
who  are  not  "affiliated  persons"  of  Advisers,  interest  expenses,  taxes,
brokerage  fees and commissions, fees and expenses of registering and qualifying
Fortis Series and  its shares  for distribution under  Federal securities  laws,
expenses of preparing prospectuses and of printing and distributing prospectuses
annually  to  existing Contract  owners, custodian  charges, auditing  and legal
expenses, insurance expenses,  association membership dues,  and the expense  of
reports  to shareholders and Contract  owners, shareholders' meetings, and proxy
solicitations. Fortis Series is  also liable for  such nonrecurring expenses  as
may  arise, including litigation to  which it may be  a party. Fortis Series may
have an obligation to indemnify its directors and officers with respect to  such
litigation.
    
 
   
SUB-ADVISORY AGREEMENTS
    
 
   
Global  Bond Series, Global Asset Allocation  Series, S&P 500 Index Series, Blue
Chip Stock Series, International Stock Series,  Mid Cap Stock Series, Small  Cap
Value  Series  and  Large Cap  Growth  Series have  retained  sub-advisers under
investment  sub-advisory  agreements  and  for   Small  Cap  Value  Series   the
sub-adviser  has entered  into a sub-management  agreement with  a manager (such
agreements are collectively referred to as the "Sub-Advisory Agreements").  Each
Sub-Advisory  Agreement will terminate automatically upon the termination of the
Investment Advisory and Management Agreement between Fortis Series and Advisers,
and in the event of its assignment. In addition, the Sub-Advisory Agreements are
terminable at any time, without penalty, by the Board of Directors, by  Advisers
or  by  a vote  of the  majority  of the  applicable Series'  outstanding voting
securities on  60 days'  written notice  to such  Series' sub-adviser  and by  a
sub-adviser  on 60 days'  written notice to  Advisers. Unless sooner terminated,
the Sub-Advisory  Agreements shall  continue  in effect  from  year to  year  if
approved  at least annually by  the Board of Directors of  Fortis Series or by a
vote of a
    
 
                                       52
<PAGE>
   
majority of the outstanding voting securities of the applicable Series, provided
that in either event such continuance is also approved by the vote of a majority
of the directors who are not interested persons of any party to the Sub-Advisory
Agreements, cast in person at a meeting called for the purpose of voting on such
approval.
    
 
   
For their services, the sub-advisers receive  a fee from Advisers (such  amounts
are  payable out of the  advisory fees received by  Advisers for the same period
and are not in addition to such  amounts). From its advisory fee, Advisers  pays
fees to each of the sub-advisers calculated as described below:
    
 
   
<TABLE>
<CAPTION>
                                                                           ANNUAL SUB-
          SERIES             SUB-ADVISER         AVERAGE NET ASSETS       ADVISORY FEE
- --------------------------  --------------  ----------------------------  -------------
<S>                         <C>             <C>                           <C>
Global Bond Series          Mercury         For the first $100 million     .350%
                                            For assets over $100 million   .225%
 
Global Asset Allocation     Morgan Stanley  For the first $100 million     .500%
Series                                      For assets over $100 million   .400%
 
S&P 500 Index Series        Dreyfus         All levels of assets           .170%
 
Blue Chip Stock Series      T. Rowe Price   For the first $100,000,000     .500%
                                            For assets over $100,000,000   .450%
 
International Stock Series  Lazard          For the first $100 million     .450%
                                            For assets over $100 million   .375%
 
Mid Cap Stock Series        Dreyfus         For the first $100 million     .500%
                                            For the next $150 million      .450%
                                            For assets over $250 million   .400%
 
Small Cap Value Series      Berger          For the first $50 million      .500%
                            Associates      For assets over $50 million    .450%
 
Large Cap Growth Series     Alliance        For the first $100 million     .500%
                                            For the next $100 million      .450%
                                            For assets over $200 million   .400%
</TABLE>
    
 
   
For  the Small Cap Value Series, Berger Associates pays Perkins, Wolf, McDonnell
& Company (the "Manager") an amount equal to .25 of 1% of the Series' first  $50
million  of average daily net assets and .225 of 1% of the Series' net assets in
excess of $50 million.
    
 
   
During the fiscal year ended December  31, 1997, Advisers paid advisory fees  to
the  sub-advisers of Global Bond Series, Global Asset Allocation Series, S&P 500
Index Series,  Blue Chip  Stock Series  and International  Stock Series  in  the
amount  $69,898, $225,590, $105,647, $209,455 and $302,356, respectively. During
the fiscal year  ended December  31, 1996, Advisers  paid advisory  fees to  the
sub-advisers  of Global  Bond Series,  Global Asset  Allocation Series,  S&P 500
Index Series,  Blue Chip  Stock Series  and International  Stock Series  in  the
amount  $61,272, $144,079,  $14,834, $37,202 and  $168,327, respectively. During
the fiscal year  ended December  31, 1995, Advisers  paid advisory  fees to  the
sub-advisers   of  Global  Bond  Series,  Global  Asset  Allocation  Series  and
International Stock  Series  in the  amount  of $33,984,  $59,732  and  $54,253,
respectively.
    
 
   
EXPENSES
    
 
   
Expenses  that  relate exclusively  to a  particular  Series, such  as custodian
charges and registration  fees for  shares, are  charged to  that Series.  Other
expenses  of  Fortis Series  are allocated  between the  Series in  an equitable
manner as determined by officers of  Fortis Series under the supervision of  the
Board  of Directors, usually  on the basis  of net assets  or number of contract
holders.
    
 
Advisers bears the costs of acting  as Fortis Series transfer agent,  registrar,
and  dividend agent.  Investors has agreed  to pay all  expenses of distributing
Fortis Series' shares,  including, but  not limited  to, costs  of printing  and
distributing  prospectuses  to  new  Contract  owners.  Pursuant  to  a separate
Distribution Agreement between  Fortis Benefits and  investors, Fortis  Benefits
reimburses  Investors for these costs and expenses with respect to variable life
insurance policies issued by Fortis Benefits or pays them on Investors' behalf.
 
   
Out of its  advisory fee,  but not  in excess  thereof, Advisers  has agreed  to
reimburse  Mid Cap  Stock Series,  Small Cap Value  Series and  Large Cap Growth
Series for their expenses,  until their net assets  first reach $10 million,  to
the  extent that the expenses of the applicable Series (including the investment
advisory fees, but excluding interest,  taxes, brokerage fees, and  commissions)
exceed  an amount equal, on  an annual basis, to 1.25%  of the average daily net
assets of  the applicable  Series. In  addition to  this expense  reimbursement,
Advisers  reserves the right, but shall not be obligated, to institute voluntary
expense reimbursement programs which,  if instituted, shall  be in such  amounts
and  based on such  terms and conditions  as Advisers, in  its sole and absolute
discretion, determines.  Furthermore, Advisers  reserves the  absolute right  to
discontinue  any of  such reimbursement programs  at any time  without notice to
Fortis Series.
    
 
   
Although investment decisions for each Series are made independently from  those
of  the other  Series or  those of  other funds  or private  accounts managed by
Advisers, sometimes the  same security  is suitable  for more  than one  Series,
fund,  or  account.  If  and  when  two  or  more  Series,  funds,  or  accounts
simultaneously purchase  or sell  the same  security, the  transactions will  be
allocated  as to price  and amount in accordance  with arrangements equitable to
each Series, fund,  or account. The  simultaneous purchase or  sale of the  same
securities  by  a  Series  and  another Series,  fund,  or  account  may  have a
detrimental effect on the Series, as this may affect the price paid or  received
by the Series or the size of the position obtainable by the Series.
    
 
PORTFOLIO TRANSACTIONS AND ALLOCATION OF BROKERAGE
 
   
Advisers,  or if applicable, a sub-adviser,  is responsible for decisions to buy
and sell securities  for the  Series, the selection  of brokers  and dealers  to
effect  the transactions and  the negotiation of  brokerage commissions, if any,
subject to Advisers' general control. Transactions on a stock exchange in equity
securities will  be  executed primarily  through  brokers that  will  receive  a
commission  paid by the Series. The Series which buy fixed income securities, on
the other hand, will not normally incur any brokerage commissions. Fixed  income
securities,  as well as equity securities traded in the over-the-counter market,
are generally traded  on a  "net" basis with  dealers acting  as principals  for
their  own  accounts without  a  stated commission,  although  the price  of the
security usually includes  a profit  to the dealer.  In underwritten  offerings,
securities   are  purchased  at  a  fixed  price  that  includes  an  amount  of
compensation to  the underwriter,  generally referred  to as  the  underwriter's
concession  or  discount.  Certain of  these  securities may  also  be purchased
directly from an  issuer, in which  case neither commissions  nor discounts  are
paid.
    
 
In  placing orders  for securities transactions,  the primary  criterion for the
selection of a broker-dealer is the ability of the broker-dealer, in the opinion
of Advisers, to secure prompt execution of the transactions on favorable  terms,
including  the reasonableness of the commission and considering the state of the
market at  the time.  When consistent  with these  objectives, business  may  be
placed  with broker-dealers who furnish investment research services to Advisers
or a sub-adviser. Such  research services include advice,  both directly and  in
writing,  as  to the  value  of securities;  the  advisability of  investing in,
purchasing, or  selling  securities;  and the  availability  of  securities,  or
purchasers  or sellers of securities; as well as analyses and reports concerning
issues, industries, securities, economic factors and trends, portfolio strategy,
and the performance of  accounts. This allows Advisers  and the sub-advisers  to
supplement their own investment
 
                                       53
<PAGE>
research  activities and to obtain the  views and information of individuals and
research staffs  of many  different securities  research firms  prior to  making
investment decisions for the Series. To the extent such commissions are directed
to  these  other broker-dealers  who furnish  research  services, Advisers  or a
sub-adviser receives a  benefit, not  capable of evaluation  in dollar  amounts,
without  providing  any  direct  monetary  benefit  to  the  Series  from  these
commissions. Most  research  services  obtained by  Advisers  or  a  sub-adviser
generally  benefit  several  or  all of  the  investment  companies  and private
accounts which it manages, as opposed to solely benefiting one specific  managed
fund  or account. Normally, research services  obtained through managed funds or
accounts investing in common stocks would primarily benefit the managed funds or
accounts which  invest  in  common  stock;  similarly,  services  obtained  from
transactions  in fixed income securities would normally be of greater benefit to
the managed funds or accounts which invest in debt securities.
 
   
Neither Advisers nor  any sub-adviser has  entered into any  formal or  informal
agreements  with any  broker-dealers, nor does  it maintain  any "formula" which
must be followed in connection with the placement of Fortis Series  transactions
in  exchange for  research services  provided Advisers,  except as  noted below.
However, Advisers and each of the sub-advisers does maintain an informal list of
broker-dealers, which  is used  from time  to time  as a  general guide  in  the
placement   of   Fortis  Series   business,  in   order  to   encourage  certain
broker-dealers  to  provide  Advisers  with  research  services  which  Advisers
anticipates  will be useful to  it. Because the list  is merely a general guide,
which is  to be  used only  after the  primary criterion  for the  selection  of
broker-dealers  (discussed above) has been  met, substantial deviations from the
list  are  permissible  and  may  be   expected  to  occur.  Advisers  (or   the
sub-advisers)  will authorize Fortis  Series to pay an  amount of commission for
effecting a securities transaction in excess of the amount of commission another
broker-dealer  would  have  charged  only  if  Advisers  (or  the  sub-advisers)
determines  in  good  faith that  such  amount  of commission  is  reasonable in
relation to the value  of the brokerage and  research services provided by  such
broker-dealer,  viewed  in  terms  of  either  that  particular  transaction  or
Advisers' overall  responsibilities with  respect to  the accounts  as to  which
Advisers  (or  the  sub-advisers)  exercises  investment  discretion. Generally,
Fortis Series pays higher  commissions than the  lowest rates available.  Morgan
Stanley  has  agreements in  place with  several  broker-dealers that  relate to
equity trades  directed  by  Morgan  Stanley.  Berger  Associates  has  informal
agreements  in place  with several broker-dealers  that relate  to equity trades
directed by  Berger Associates.  Under  these agreements,  the brokers  pay  for
services  which  assist  the  investment  manager  (Morgan  Stanley  and  Berger
Associates) in making investment decisions. The brokers are obligated to achieve
best execution and the commission rates charged by the brokers are comparable to
those charged by brokers with which there is no such agreement.
    
 
Under the  1940  Act, no  Series  may  purchase portfolio  securities  from  any
underwriting  syndicate of which an affiliate of the Adviser or a sub-adviser is
a member, except under certain limited conditions set forth in Rule 10f-3  under
the  1940 Act. The Rule sets forth requirements relating to, among other things,
the terms  of an  issue  of securities  purchased by  a  Series, the  amount  of
securities  that may be purchased  in any one issue, and  the assets of a Series
that may be invested in a particular issue. In addition, purchases of securities
made pursuant to the terms  of the Rule must be  approved at least quarterly  by
the  Board of Directors  of Fortis Series,  including a majority  of the members
thereof who are not interested persons of Fortis Series.
 
Portfolio transactions may be effected  through affiliates of the  sub-advisers.
Prior  to  executing any  such transactions,  the Board  of Directors  of Fortis
Series will adopt policies incorporating the  standards of Rule 17e-1 under  the
1940  Act,  which  requires that  the  commissions  paid to  affiliates  must be
reasonable and  fair compared  to the  commissions, fees  or other  remuneration
received  or  to be  received  by other  brokers  in connection  with comparable
transactions involving similar  securities during a  comparable period of  time.
The  Rule  also  contains  review  requirements  and  requires  that  reports be
furnished to the Board of Directors and that records be maintained in connection
with such reviews.
 
   
Some Series paid  brokerage commissions during  the periods and  in the  amounts
listed below:
    
 
   
<TABLE>
<CAPTION>
                                           FISCAL YEAR        FISCAL YEAR        FISCAL YEAR
                SERIES                   ENDED 12/31/95     ENDED 12/31/96     ENDED 12/31/97
- --------------------------------------  -----------------  -----------------  -----------------
<S>                                     <C>                <C>                <C>
Global Asset Allocation                    $    26,471(2)     $    29,730        $    47,973
Asset Allocation                               110,945            216,651            311,739
Value Series                                    *                  20,397(1)         119,158
Growth & Income                                 73,615            112,773            114,941
S&P 500 Index                                   *                  19,233(1)          60,463
Blue Chip Stock                                 *                  12,981(1)          46,609
International Stock                             79,654(2)         126,800            145,900
Global Growth                                  236,023            272,063            485,715
Growth Stock                                   179,941            323,731            311,310
Aggressive Growth                               12,832             50,376             47,456
</TABLE>
    
 
- --------------------------
   
* Not in existence during this period.
    
   
(1) Inception date: May 1, 1996.
    
   
(2) Inception date: January 3, 1995.
    
 
   
Mid Cap Stock Series, Small Cap Value Series and Large Cap Growth Series had not
commenced operations as of December 31, 1997.
    
 
   
Money  Market  Series,  U.S. Government  Securities  Series,  Diversified Income
Series, Global  Bond Series  and High  Yield Series  did not  pay any  brokerage
commissions for the fiscal years ended December 31, 1995, 1996 or 1997.
    
 
   
From time to time the Series may acquire the securities of their regular brokers
or  dealers or of the parent of those  brokers or dealers. The Series which held
such securities at year end  and the amount of each  are listed below. No  other
Series purchased securities of its regular broker or dealers or parent companies
of  such brokers or dealers  during the 1997 fiscal  year. Mid Cap Stock Series,
Small Cap Value Series and Large Cap Growth Series had not commenced  operations
as of December 31, 1997.
    
 
   
<TABLE>
<CAPTION>
                                                               VALUE OF
                                                           SECURITIES OWNED
                                                           AT END OF PERIOD
SERIES/NAME OF ISSUER                                             ($)
- ---------------------------------------------------------  -----------------
<S>                                                        <C>
Money Market Series
  American General Finance Corp..........................    $   2,655,112
  Beneficial Corp........................................        2,882,020
  CIT Group Holdings, Inc................................        2,669,754
  Commercial Credit Co...................................        2,693,644
  Ford Motor Credit Co...................................        2,890,200
  IBM Credit Corp........................................        2,980,077
  Merrill Lynch, Pierce, Fenner & Smith Inc..............        2,623,725
  U.S. Bank National Association.........................        1,678,000
U.S. Government Securities Series
  U.S. Bank National Association.........................          482,000
Diversified Income Series
  Bear Stearns & Co......................................        1,519,285
  Donaldson, Lufkin & Jenrette Sec.......................        4,270,709
  J.P. Morgan & Co., Inc.................................          917,719
  Lehman Brothers, Inc...................................        2,864,028
  Merrill Lynch, Pierce, Fenner & Smith..................        2,403,666
  Morgan Stanley & Co., Inc..............................          894,132
  Salomon Brothers, Inc..................................          507,098
  U.S. Bank National Association.........................        2,137,000
</TABLE>
    
 
                                       54
<PAGE>
   
<TABLE>
<CAPTION>
                                                               VALUE OF
                                                           SECURITIES OWNED
                                                           AT END OF PERIOD
SERIES/NAME OF ISSUER                                             ($)
- ---------------------------------------------------------  -----------------
Global Bond Series
<S>                                                        <C>
  U.S. Bank National Association.........................    $         872
High Yield Series
  U.S. Bank National Association.........................        1,944,000
Global Asset Allocation Series
  U.S. Bank National Association.........................        3,495,087
Asset Allocation Series
  Bear Stearns & Co......................................        1,519,286
  Donaldson, Lufkin & Jenrette Sec.......................        9,971,999
  J.P. Morgan & Co., Inc.................................        4,580,567
  Lehman Brothers, Inc...................................        4,949,948
  Merrill Lynch, Pierce, Fenner & Smith..................        3,795,085
  Morgan Stanley & Co., Inc..............................        2,675,954
  Salomon Brothers, Inc..................................        2,028,392
  U.S. Bank National Association.........................       13,157,000
Value Series
  Chase Manhattan Corp...................................          865,050
  U.S. Bancorp...........................................        1,074,600
  U.S. Bank National Association.........................        1,536,000
Growth & Income Series
  Chase Manhattan Corp...................................        1,752,000
  U.S. Bancorp...........................................        1,183,179
  U.S. Bank National Association.........................        8,070,000
<CAPTION>
                                                               VALUE OF
                                                           SECURITIES OWNED
                                                           AT END OF PERIOD
SERIES/NAME OF ISSUER                                             ($)
- ---------------------------------------------------------  -----------------
<S>                                                        <C>
S&P 500 Index Series
  Chase Manhattan Corp...................................    $     635,100
  First Chicago Capital Markets, Inc.....................          342,350
  Merrill Lynch, Pierce, Fenner & Smith..................          320,925
  Morgan Stanley & Co., Inc..............................          473,887
  Nationsbank Corp.......................................          597,300
  U.S. Bancorp...........................................          375,774
Blue Chip Stock Series
  Chase Manhattan Corp...................................          766,500
  Morgan Stanley, Dean Witter, Discover & Co.............          206,938
  Nationsbank Corp.......................................          443,931
  U.S. Bancorp...........................................          716,400
International Stock Series
  U.S. Bank National Association.........................        1,728,576
Global Growth Series
  U.S. Bank National Association.........................       14,016,000
Growth Stock Series
  U.S. Bank National Association.........................       33,255,595
Aggressive Growth Series
  U.S. Bank National Association.........................        5,223,000
</TABLE>
    
 
Fortis  Advisers, Inc. has developed written trade allocation procedures for its
management of the securities trading activities of its clients. Advisers manages
multiple portfolios, both public (mutual funds) and private. The purpose of  the
trade  allocation procedures is to treat the portfolios fairly and reasonably in
situations where the amount of a  security that is available is insufficient  to
satisfy the volume or price requirements of each portfolio that is interested in
purchasing that security.
 
Generally,  when the amount of securities available  in a public offering or the
secondary market is insufficient to satisfy the requirements for the  interested
portfolios,  the procedures require a pro rata allocation based upon the amounts
initially requested  by each  portfolio manager.  In allocating  trades made  on
combined  basis, Advisers seeks  to achieve the average  price of the securities
for each participating portfolio.
 
Because a pro rata  allocation may not always  adequately accommodate all  facts
and circumstances, the procedures provide for exceptions to allocate trades on a
basis  other than pro rata.  Examples of where adjustments  may be made include:
(i) the cash position  of the portfolios involved  in the transaction; and  (ii)
the relative importance of the security to a portfolio in seeking to achieve its
investment objective.
 
- --------------------------------------------------------------------------------
 
CAPITAL STOCK
 
   
Fortis  Series' shares have  a par value of  $.01 per share  and equal rights to
share in dividends and  assets. The shares possess  no preemptive or  conversion
rights.  On  December 31,  1997,  no person  to  Fortis Series'  knowledge owned
beneficially as much as 5% of the outstanding Shares of any Series.
    
 
   
Fortis Series currently has eighteen Series, each constituting a separate series
of shares.  Under  Fortis  Series'  Articles  of  Incorporation,  the  Board  of
Directors  is  authorized to  create  new series  in  addition to  those already
existing without the approval of the  shareholders of Fortis Series. Each  share
of  stock will have a pro-rata interest in the assets of the Series to which the
stock of that  series relates and  will have no  interest in the  assets of  any
other Series. In the event of liquidation, each share of a Series would have the
same rights to dividends and assets as every other share of that Series.
    
 
Each  share of a Series  has one vote (with  proportionate voting for fractional
shares) irrespective of the relative net  asset value of the Series' shares.  On
some issues, such as the election of directors, all shares of Fortis Series vote
together as one series. Cumulative voting is not authorized. This means that the
holders  of more than 50% of the shares voting for the election of directors can
elect 100% of the  directors if they choose  to do so, and,  in such event,  the
holders of the remaining shares will be unable to elect any directors.
 
   
On  an issue  affecting only  a particular  Series, the  shares of  the affected
Series vote  as a  separate series.  An  example of  such an  issue would  be  a
fundamental investment restriction pertaining to only one Series.
    
 
Fortis Series is not required under Minnesota law to hold annual or periodically
scheduled  regular meetings of shareholders.  Minnesota corporation law provides
for the  Board  of Directors  to  convene  shareholder meetings  when  it  deems
appropriate. In addition, if a regular meeting of shareholders has not been held
during  the immediately preceding fifteen  months, a shareholder or shareholders
holding three percent or more of the voting shares of Fortis Series may demand a
regular meeting of shareholders by written  notice of demand given to the  chief
executive officer or the chief financial officer of Fortis Series. Within ninety
days after receipt of the demand, a regular meeting of shareholders must be held
at Fortis Series' expense. Additionally, the 1940 Act requires shareholder votes
for  all amendments to fundamental investment  policies and restrictions and for
all investment advisory contracts and amendments thereto.
 
                                       55
<PAGE>
COMPUTATION OF NET ASSET VALUE AND PRICING
 
   
On December 31, 1997, each Series' net  asset value per share was calculated  as
shown  below. Mid Cap Stock Series, Small  Cap Value Series and Large Cap Growth
Series had not commenced operations as of that date.
    
 
   
<TABLE>
<S>                                       <C>
MONEY MARKET SERIES
Net Assets        ($57,009,235)
- ----------------------------              =  Net Asset Value Per Share ($11.03)
Shares Outstanding (5,168,568)
 
U.S. GOVERNMENT SECURITIES SERIES
Net Assets       ($142,069,864)
- ----------------------------              =  Net Asset Value Per Share ($10.68)
Shares Outstanding (13,301,888)
 
DIVERSIFIED INCOME SERIES
Net Assets       ($105,199,940)
- ----------------------------              =  Net Asset Value Per Share ($11.98)
Shares Outstanding (8,778,784)
 
GLOBAL BOND SERIES
Net Assets        ($20,691,969)
- ----------------------------              =  Net Asset Value Per Share ($10.65)
Shares Outstanding (1,943,330)
 
HIGH YIELD SERIES
Net Assets        ($59,228,440)
- ----------------------------              =  Net Asset Value Per Share ($10.77)
Shares Outstanding (5,499,676)
 
ASSET ALLOCATION SERIES
Net Assets       ($482,280,029)
- ----------------------------              =  Net Asset Value Per Share ($17.62)
Shares Outstanding (27,372,975)
 
GLOBAL ASSET ALLOCATION SERIES
Net Assets        ($52,482,392)
- ----------------------------              =  Net Asset Value Per Share ($13.29)
Shares Outstanding (3,949,879)
 
VALUE SERIES
Net Assets        ($55,057,902)
- ----------------------------              =  Net Asset Value Per Share ($13.42)
Shares Outstanding (4,102,492)
 
GROWTH & INCOME SERIES
Net Assets       ($244,970,367)
- ----------------------------              =  Net Asset Value Per Share ($18.76)
Shares Outstanding (13,061,059)
 
S&P 500 INDEX SERIES
Net Assets       ($109,571,767)
- ----------------------------              =  Net Asset Value Per Share ($14.93)
Shares Outstanding (7,339,084)
 
BLUE CHIP STOCK SERIES
Net Assets        ($78,728,607)
- ----------------------------              =  Net Asset Value Per Share ($14.76)
Shares Outstanding (5,335,633)
 
GLOBAL GROWTH SERIES
Net Assets       ($353,254,570)
- ----------------------------              =  Net Asset Value Per Share ($20.29)
Shares Outstanding (17,409,548)
 
GROWTH STOCK SERIES
Net Assets       ($707,154,786)
- ----------------------------              =  Net Asset Value Per Share ($36.64)
Shares Outstanding (19,300,472)
 
INTERNATIONAL STOCK SERIES
Net Assets        ($79,142,428)
- ----------------------------              =  Net Asset Value Per Share ($13.36)
Shares Outstanding (5,923,626)
 
AGGRESSIVE GROWTH SERIES
Net Assets       ($122,455,160)
- ----------------------------              =  Net Asset Value Per Share ($13.81)
Shares Outstanding (8,864,746)
</TABLE>
    
 
   
The primary close  of trading currently  is 3:00 P.M.  (Central Time), but  this
time  may be  changed. The  offering price for  purchase orders  received in the
office of Fortis  Series after  the beginning  of each  day the  New York  Stock
Exchange  (the  "Exchange") is  open for  trading  is based  on net  asset value
determined as of the close of regular trading (currently 3:00 P.M. Central Time)
on the Exchange that  day; the price  in effect for  orders received after  such
close  is based on the net  asset value as of such  close of the Exchange on the
next day the Exchange is open for trading.
    
 
   
Generally, the net asset value of each Series' shares is determined on each  day
on  which  the Exchange  is  open for  business. The  Exchange  is not  open for
business on the following holidays (nor on  the nearest Monday or Friday if  the
holiday  falls  on a  weekend): New  Year's  Day, Martin  Luther King,  Jr. Day,
Presidents' Day,  Good  Friday,  Memorial  Day,  Independence  Day,  Labor  Day,
Thanksgiving  Day, and Christmas Day. Additionally,  net asset value need not be
determined (i) on days on which changes in the value of the portfolio securities
will not materially affect the current net asset value of the Series' shares; or
(ii) on days during which no such Series' shares are tendered for redemption and
no orders to purchase or sell such Series' shares are received by Fortis Series.
    
 
REDEMPTION
 
The right of the Separate  Account to redeem shares  or to receive payment  with
respect  to any  redemption may  be suspended only  for any  period during which
trading on  the Exchange  is  restricted as  determined  by the  Securities  and
Exchange  Commission  or  when such  Exchange  is closed  (other  than customary
weekend or holiday closings), for any period during which an emergency exists as
defined by the Securities and Exchange Commission as a result of which  disposal
of  a Series' securities or determination of  the net asset value of each Series
is not reasonably practicable, and for such other periods as the Securities  and
Exchange  Commission may by  order permit for the  protection of shareholders of
each Series.
 
   
Redemption of  shares,  or payment,  may  be suspended  at  times (a)  when  the
Exchange  is closed  for other than  customary weekend or  holiday closings, (b)
when trading on said Exchange is restricted, (c) when an emergency exists, as  a
result  of which  disposal by  Fortis Series  of securities  owned by  it is not
reasonably practicable, or it  is not reasonably  practicable for Fortis  Series
fairly to determine the value of its net assets, or during any other period when
the  Securities and  Exchange Commission,  by order,  so permits;  provided that
applicable rules and regulations of the Securities and Exchange Commission shall
govern as to whether the conditions prescribed in (b) or (c) exist.
    
 
TAXATION
 
   
The Series  have  qualified and  intend  to  continue to  qualify  as  regulated
investment  companies under the  Internal Revenue Code of  1986, as amended (the
"Code"). As long as  each Series so  qualifies, the Series is  not taxed on  the
income  it distributes to the shareholders. Generally,  in order to qualify as a
regulated investment company, a  Series must derive at  least 90 percent of  its
gross  income  from  dividends,  interest,  and gains  from  the  sale  or other
disposition  of   stock   or   securities   or   other   income   derived   with
    
 
                                       56
<PAGE>
   
respect  to its  investing in  such stock  or securities.  Being qualified  as a
regulated investment company  does not  mean that the  Internal Revenue  Service
supervises Fortis Series or approves its policies.
    
 
   
Under  the Code, each Series will generally  be treated as a separate entity for
federal tax  purposes. Therefore,  each  Series will  be treated  separately  in
determining  whether  it  qualifies as  a  regulated investment  company  and in
determining the net ordinary  income (or loss), net  realized capital gains  (or
losses) and distributions necessary to relieve each Series of any federal income
tax liability.
    
 
Pursuant  to the Code, each Series will be subject to a nondeductible excise tax
for each calendar year equal to 4 percent  of the excess, if any, of the  amount
required  to be distributed over the amount distributed. However, the excise tax
does not apply  to any income  on which a  Series pays income  tax. In order  to
avoid  the imposition  of this  excise tax,  each Series  generally must declare
dividends by the end of a calendar  year representing 98 percent of the  Series'
ordinary  income for the  calendar year and  98 percent of  its capital gain net
income (both long-term and short-term capital gains) for the twelve-month period
ending October 31 of the calendar year.
 
The Code  imposes certain  diversification requirements  on the  investments  of
segregated  asset  accounts  underlying  variable  annuity  and  life  insurance
contracts. Treasury Regulations interpret those requirements. Under the Code and
the Regulations,  if a  variable contract  is based  in part  or in  whole on  a
segregated  asset account that fails to  meet the diversification standards, the
variable contract will not be treated  as an annuity or life insurance  contract
for  federal income tax purposes.  As a consequence, the  income on the contract
for any taxable year,  whether or not distributed,  will be treated as  ordinary
income received by the Contract owner during such year.
 
   
As  a general rule, each Series may invest not more than 55% of the value of its
total assets in  the securities of  a single issuer,  not more than  70% of  the
value  of its total assets  in the securities of any  two issuers, not more than
80% of the value of its total assets in the securities of any three issuers, and
not more than 90% of the value of its total assets in the securities of any four
issuers. Under the Code and the Regulations, for purposes of the diversification
tests, the securities of each agency  or instrumentality of the U.S.  government
are  considered  the securities  of a  separate issuer.  Each Series  intends to
satisfy either  the  diversification  test described  above  or  an  alternative
diversification  test  provided  by the  Code,  so that  the  variable contracts
invested in each Series will be treated as variable contracts under the Code and
the income earned with respect to the contracts will not be currently taxable to
the Contract owners.
    
 
If a  Series  invests in  zero  coupon  obligations upon  their  issuance,  such
obligations  will  have original  issue discount  in the  hands of  such Series.
Generally, original issue  discount equals  the difference  between the  "stated
redemption  price at maturity" of the obligation  and its "issue price" as those
terms are defined  in the  Code. If  a Series  acquires an  already issued  zero
coupon  bond from another holder, the bond  will have original issue discount in
the Series' hands, equal to the difference between the "adjusted issue price" of
the bond at the time the Series  acquires it (that is, the original issue  price
of  the bond plus the amount of original issue discount accrued to date) and its
stated redemption  price at  maturity. In  each case,  a Series  is required  to
accrue  as ordinary  interest income a  portion of such  original issue discount
even though such Series receives no  cash currently as interest payments on  the
obligation.  Similarly, in  the case of  PIKs, Series are  required to recognize
interest income  in  the amount  of  the fair  market  value of  the  securities
received as interest payments on the PIKs, even though they receive no cash.
 
   
Because  each  Series is  required to  distribute substantially  all of  its net
investment income (including accrued original issue discount and interest income
attributable to PIKs) in order to be taxed as a regulated investment company,  a
Series  having such income may be required  to distribute an amount greater than
the total cash  income the Series  actually receives. Accordingly,  in order  to
make  the  required  distribution,  the  Series may  be  required  to  borrow or
liquidate securities.
    
 
   
For Federal  income tax  purposes  the Series  had  the following  capital  loss
carryovers  at December  31, 1997,  which, if  not offset  by subsequent capital
gains, will expire in 1998 through 2005.  It is unlikely the Board of  Directors
will  authorize a  distribution of  any net  realized gains  until the available
capital loss carryovers have been offset or expired.
    
 
   
<TABLE>
<S>                                       <C>
Money Market Series.....................  $    81,339
U.S. Government Securities Series.......   15,568,683
Diversified Income Series...............    9,476,925
Blue Chip Stock Series..................      310,339
Global Growth Series....................      923,213
Aggressive Growth Series................   15,743,221
</TABLE>
    
 
   
UNDERWRITER
    
 
   
Investors  has  entered  into  an  Underwriting  Agreement  for  the  sale   and
distribution   of  the  Series'  shares.  This  Underwriting  Agreement  may  be
terminated by Fortis Series or Investors at  any time by the giving of 60  days'
written  notice, and  terminates automatically in  the event  of its assignment.
Unless sooner terminated,  the Underwriting Agreement  shall continue in  effect
for  more than two years after its execution only so long as such continuance is
also approved by the vote of a majority of the directors who are not parties  to
such  Underwriting Agreement,  or interested  persons of  such parties,  cast in
person at a meeting called for the purpose of voting on such approval.
    
 
   
The Underwriting Agreement requires Investors to pay all promotional expenses in
connection with  the  distribution  of  the  Fortis  Series'  shares,  including
printing  and distributing  prospectuses and  shareholder reports  to new Policy
owners and the costs  of sales literature. Pursuant  to a separate  distribution
agreement  between  Fortis Benefits  and  Investors, Fortis  Benefits reimburses
Investors for these expenses  or pays them on  Investors' behalf, to the  extent
they  involve shares issued  to fund variable life  insurance policies issued by
Fortis Benefits.
    
 
In the Underwriting Agreement, Investors  undertakes to indemnify Fortis  Series
against  all costs  of litigation and  other legal proceedings,  and against any
liability incurred by or imposed upon Fortis Series in any way arising out of or
in connection with the sale or distribution of the Fortis Series' shares, except
to the  extent  that such  liability  is the  result  of information  which  was
obtainable  by Investors only from persons affiliated with Fortis Series but not
with Investors.
 
PERFORMANCE
 
   
The Series may refer to or advertise average annual total return and  cumulative
return.  Certain Series may provide yield calculations. All such yield and total
return quotations  are based  on historical  earnings and  are not  intended  to
indicate  future performance. The return on and principal value of an investment
in any Series will fluctuate, so that shares when redeemed may be worth more  or
less  than their original cost. Mid Cap Stock Series, Small Cap Value Series and
Large Cap Growth Series  had not commenced operations  as of December 31,  1997,
and no information for such series is provided.
    
 
                                       57
<PAGE>
Cumulative total return is computed by finding the cumulative compounded rate of
return  over the  period indicated  in the  advertisement that  would equate the
initial amount  invested  to  the  ending redeemable  value,  according  to  the
following formula:
 
<TABLE>
<S>         <C>         <C>    <C>          <C>     <C>
                                ERV-P
 CTR           =         (       ----        )       100
                                  P
</TABLE>
 
<TABLE>
<S>      <C>   <C>
Where:   CTR   =   Cumulative total return;
         ERV   =   ending  redeemable value at the  end of the period
                   of a  hypothetical  $1,000  payment  made  at  the
                   beginning of such period; and
         P     =   initial payment of $1,000
</TABLE>
 
This  calculation  assumes all  dividends  and capital  gains  distributions are
reinvested at net asset value on the appropriate reinvestment dates as described
in the Prospectus and includes all  recurring fees, such as investment  advisory
and management fees, charged to all shareholder accounts.
 
   
The Series' cumulative total returns from date of inception (ten years for Money
Market,  U.S.  Government  Securities,  Asset Allocation  and  Growth  Stock) to
December 31, 1997 were:
    
 
   
                            CUMULATIVE TOTAL RETURNS
    
 
   
<TABLE>
<CAPTION>
                                           SINCE
SERIES                                    INCEPTION
- ----------------------------------------  --------
<S>                                       <C>
Money Market............................    72.58 %
U.S. Government Securities..............   113.80 %
Diversified Income......................   124.85 %(1)
Global Bond.............................    23.27 %(2)
High Yield..............................    35.72 %(5)
Global Asset Allocation.................    50.31 %(2)
Asset Allocation........................   222.77 %
Value...................................    39.62 %(4)
Growth & Income.........................   104.75 %(3)
S&P 500 Index...........................    51.23 %(4)
Blue Chip Stock.........................    47.63 %(4)
International Stock.....................    46.01 %(2)
Global Growth...........................   110.59 %(5)
Growth Stock............................   285.67 %
Aggressive Growth.......................    39.13 %(3)
</TABLE>
    
 
- --------------------------
   
 (1)Inception date: May 2, 1988.
    
   
 (2)Inception date: January 3, 1995.
    
   
 (3)Inception date: May 2, 1994.
    
   
 (4)Inception date: May 1, 1996.
    
   
 (5)Inception date: May 1, 1992.
    
 
Average annual total return figures are  computed by finding the average  annual
compounded  rates of return over the periods indicated in the advertisement that
would equate  the  initial  amount  invested to  the  ending  redeemable  value,
according to the following formula:
 
<TABLE>
     <S>         <C>
           n
     P(1+T)      =     ERV
</TABLE>
 
<TABLE>
<S>      <C>   <C>
Where:   P     =   a hypothetical initial payment of $1,000
         T     =   average annual total return;
         n     =   number of years; and
         ERV   =   ending  redeemable value at the  end of the period
                   of a  hypothetical  $1,000  payment  made  at  the
                   beginning of such period.
</TABLE>
 
This  calculation  assumes all  dividends  and capital  gains  distributions are
reinvested at net asset value on the appropriate reinvestment dates as described
in the Prospectus, and includes all recurring fees, such as investment  advisory
and management fees, charged to all shareholder accounts.
 
   
The  Series' average annual total returns for one year, five years and ten years
(since inception if less than ten years) for the period ending December 31, 1997
were:
    
 
   
                          AVERAGE ANNUAL TOTAL RETURNS
    
 
   
<TABLE>
<CAPTION>
                                                                10 YEARS/
                                                                  SINCE
SERIES                                     1 YEAR    5 YEARS    INCEPTION
- ----------------------------------------  --------   --------   ---------
<S>                                       <C>        <C>        <C>
Money Market............................     5.34 %     4.58 %   5.61%
U.S. Government Securities..............     9.08 %     6.28 %   7.89%
Diversified Income......................    10.44 %     7.59 %   8.74%(1)
Global Bond.............................     0.14 %    N/A       7.24%(2)
High Yield..............................     9.76 %    N/A       8.68%(3)
Global Asset Allocation.................    13.51 %    N/A      14.58%(2)
Asset Allocation........................    20.24 %    12.55 %  12.43%
Value...................................    25.24 %    N/A      22.14%(4)
Growth & Income.........................    27.69 %    N/A      21.57%(3)
S&P 500 Index...........................    32.32 %    N/A      28.13%(4)
Blue Chip Stock.........................    27.00 %    N/A      26.30%(4)
International Stock.....................    11.99 %    N/A      13.47%(2)
Global Growth...........................     6.82 %    13.69 %  14.04%(5)
Growth Stock............................    12.42 %    12.05 %  14.45%
Aggressive Growth.......................     1.43 %    N/A       9.42%(3)
</TABLE>
    
 
- --------------------------
   
 (1)Inception date: May 2, 1988.
    
   
 (2)Inception date: January 3, 1995.
    
   
 (3)Inception date: May 2, 1994.
    
   
 (4)Inception date: May 1, 1996.
    
   
 (5)Inception date: May 1, 1992.
    
 
Yield is computed by  dividing the net investment  income per share (as  defined
under  Securities and Exchange  Commission rules and  regulations) earned during
the computation period by the maximum offering  price per share on the last  day
of the period, according to the following formula:
 
<TABLE>
<S>        <C>  <C>  <C>    <C>  <C>  <C>                             <C>
                     (a-b)
YIELD = 2        [    ---   +1    ]         to the power of 6            -1
                      cd
</TABLE>
 
   
<TABLE>
<S>     <C>   <C>
Where:  a  =  dividends and interest earned during the period;
        b  =  expenses   accrued   for   the   period   (net  of
              reimbursements);
        c  =  the average  daily  number of  shares  outstanding
              during  the period  that were  entitled to receive
              dividends; and
        d  =  the maximum offering price  per share on the  last
              day of the period.
</TABLE>
    
 
Current  yield (calculated over a seven-day  period) is a percentage computed by
determining the net  change, exclusive  of capital changes,  in the  value of  a
hypothetical  preexisting account having a balance of one share at the beginning
of the  period, subtracting  a hypothetical  charge reflecting  deductions  from
shareholder accounts, and dividing the difference by the value of the account at
the  beginning of  the base period  to obtain  the base period  return, and then
multiplying the base period return by (365/7) with the resulting figure  carried
to  at least the  nearest hundredth of one  percent. Effective yield (calculated
over a seven-day period) is computed by determining the net change, exclusive of
capital changes, in  the value of  a hypothetical preexisting  account having  a
balance  of one share at the beginning of the period, subtracting a hypothetical
charge  reflecting  deductions  from  shareholder  accounts,  and  dividing  the
difference by the value of
 
                                       58
<PAGE>
the  account  at the  beginning of  the base  period to  obtain the  base period
return, and then compounding the base period return by adding 1, raising the sum
to a  power equal  to 365  divided  by 7,  and subtracting  1 from  the  result,
according to the following formula:
 
<TABLE>
<S>                 <C>                       <C>  <C>    <C>
Effective Yield =   [   (Base Period Return   +1)  365/7  ]   -1
</TABLE>
 
The  Series also  may quote  annual yield  figures, calculated  similarly to the
above methods.
 
   
Current yield  information  is  useful in  reviewing  performance,  but  because
current  yield  will fluctuate,  such information  may not  provide a  basis for
comparison with bank deposits or other investments which pay a fixed yield for a
stated period  of  time  and  may  be insured  and  the  current  yield  is  not
necessarily representative of future results.
    
 
As  noted in  the Prospectus, Fortis  Series may advertise  the Series' relative
performance as compiled by outside organizations or refer to publications  which
have mentioned its performance.
 
Fortis Series may from time to time compare the Series with the following:
 
     (1)  The Salomon Brothers  Non-U.S. Dollars Indices,  which are measures of
the  total  return  performance  of  high-quality  non-U.S.  dollar  denominated
securities in major sectors of the worldwide bond markets.
 
     (2)  The  Shearson  Lehman  Government/Corporate  Bond  Index,  which  is a
comprehensive measure of all public obligations of the U.S. Treasury  (excluding
flower bonds and foreign targeted issues), a publicly issued debt of agencies of
the  U.S.  Government (excluding  mortgage-backed  securities), and  all public,
fixed rate, nonconvertible  investment grade  domestic corporate  debt rated  at
least  Baa by Moody's or BBB  by S&P, or, in the  case of nonrated bonds. BBB by
Fitch Investors Service (excluding Collateralized Mortgage Obligations).
 
     (3) Average of Savings Accounts, which is a measure of all kinds of savings
deposits, including longer-term certificates (based  on figures supplied by  the
U.S.  League of Savings Institutions). Savings  accounts offer a guaranteed rate
of return on principal, but no opportunity for capital growth. During a  portion
of  the period, the  maximum rates paid  on some savings  deposits were fixed by
law.
 
     (4) The Consumer Price Index, which is  a measure of the average change  in
prices  over time in  a fixed market  basket of goods  and services (e.g., food,
clothing,  shelter,  fuels,  transportation  fares,  charges  for  doctors'  and
dentists'  services, prescription medicines,  and other goods  and services that
people buy for day-to-day living).
 
     (5) Bear Stearns Foreign Bond Index, which provides simple average  returns
for  individual countries and GNP-weighted index, beginning in 1975. The returns
are broken down by local market and currency.
 
     (6)  Ibbottson  Associates  International  Bond  Index,  which  provides  a
detailed breakdown of local market and currency returns since 1960.
 
   
     (7)  Standard & Poor's 500  Index ("S&P 500") which  is a widely recognized
index composed of the capitalization-weighted average of the price of 500 of the
largest publicly traded stocks in the United States.
    
 
     (8) Salomon Brothers Broad  Investment Grade Index which  is a widely  used
index  composed of U.S. domestic government, corporate and mortgage-backed fixed
income securities.
 
     (9) Dow Jones Industrial Average.
 
    (10) Financial News Composite Index.
 
   
    (11) Morgan Stanley  Capital International World  Indices, including,  among
others,  the Morgan  Stanley Capital  International Europe,  Australia, Far East
Index ("EAFE Index"). The EAFE  Index is an unmanaged  index of more than  1,600
companies of Europe, Australia, and the Far East (approximately 22 countries).
    
 
Indices  prepared by the research departments of such financial organizations as
Salomon Brothers,  Inc.;  Merrill Lynch,  Pierce,  Fenner &  Smith,  Inc.;  Bear
Stearns  & Co., Inc.; Morgan  Stanley; and Ibbottson Associates  may be used, as
well as information provided by the Federal Reserve Board.
 
Fortis Series may refer to the rating services listed below.
 
                              RATINGS SERVICE
 
   
          Lipper Analytical Services, Inc.
          CDA/Wiesenberger
          Morningstar Publications, Inc.
          Johnson's Charts
    
 
SYSTEMATIC WITHDRAWAL
 
CONVENIENT INCOME
 
If you are over 59 1/2 years old,  your Fortis variable annuity can be a  source
of income. For qualified plans or IRAs, you can use a systematic withdrawal plan
to satisfy the minimum distribution requirement when you turn age 70 1/2.
 
YOU CAN HAVE MONTHLY INCOME
 
    - Directly  deposited to  a Fortis Money  Fund account  for convenient check
      writing.*
 
    - Electronically  deposited  directly  to  a  checking,  money  market*   or
      brokerage account.
 
    - Sent directly in the form of a check.
 
    - Conveniently  forwarded to  another address  to pay  disability insurance,
      life insurance, long-term care premiums, mortgage, etc.
 
CHOOSE YOUR STRATEGY:
 
- -EARNINGS ONLY--withdraw any profits, leave your principal intact.
 
    - Principal never touched to provide income.
 
    - Amount varies with the performance of the investments you choose.
 
- -SPECIFY EXACT DOLLAR AMOUNT:
 
    - Ideal for paying planned expenses or supplementing your income.
 
    - Any additional earnings continue to grow tax deferred.
 
HOW TO GET STARTED
 
Your registered representative  can help you  decide what systematic  withdrawal
plan  is  right  for you.  Complete  the  Systematic Withdrawal  section  of the
Variable Annuity Service Request Form (#97212.)
 
                                       59
<PAGE>
                                     [LOGO]
 
- --------------------------
 
* A money market fund is neither insured nor guaranteed by the U.S.  Government.
While a stable net asset value is a goal of the fund, it is not a guarantee.
 
Withdrawals  from an annuity are  subject to tax and may  be subject to an early
withdrawal charge. The IRS charges a  10% tax penalty on most withdrawals  prior
to owner age 59 1/2.
 
Subaccount  unit values fluctuate.  When units are redeemed,  their value may be
worth more or less than their original cost.
 
Opportunity and Masters are  two separate annuities  with distinct features  and
charges.  This  material  must  be  preceded  or  accompanied  by  a  Masters or
Opportunity annuity brochure.
 
For more  complete  information about  Fortis  annuities including  charges  and
expenses,  send for a prospectus from Fortis Investors, Inc. P.O. Box 64284, St.
Paul, MN 55164. Read it carefully before you invest.
 
   
This investment is not FDIC insured, is not an obligation of, nor guaranteed  by
any  bank  or financial  institution, and  involves investment  risks, including
possible loss of principal.
    
 
FINANCIAL STATEMENTS
 
   
The audited financial statements as of December 31, 1997, as set forth in Fortis
Series'  1997  Annual  Report  to  Shareholders,  are  incorporated  herein   by
reference.  The audited  financial statements  are provided  in reliance  on the
report of KPMG  Peat Marwick LLP,  4200 Norwest Center,  Minneapolis, MN  55402,
independent  auditors of Fortis Series, and given  on the authority of such firm
as experts in accounting and auditing.
    
 
   
CUSTODIAN AND COUNSEL
    
 
   
U.S. Bank National Association,  601 Second Avenue  South, Minneapolis MN  55480
acts  as custodian of  Fortis Series' assets and  portfolio securities. Dorsey &
Whitney LLP, 220 South Sixth Street,  Minneapolis, MN 55402, is the  independent
General Counsel for Fortis Series.
    
 
LIMITATION OF DIRECTOR LIABILITY
 
Under  Minnesota  law, each  director of  Fortis  Series owes  certain fiduciary
duties to Fortis Series and to  its shareholders. Minnesota law provides that  a
director  "shall discharge the duties of the position of director in good faith,
in a manner the director reasonably believes to be in the best interests of  the
corporation,  and with the care an ordinarily  prudent person in a like position
would exercise under similar circumstances." Fiduciary duties of a director of a
Minnesota corporation include, therefore,  both a duty of  "loyalty" (to act  in
good  faith and act in a manner reasonably  believed to be in the best interests
of the corporation) and  a duty of  "care" (to act with  the care an  ordinarily
prudent  person in a like position  would exercise under similar circumstances).
Minnesota law  authorizes  corporations  to  eliminate  or  limit  the  personal
liability  of a  director to  the corporation  or its  shareholders for monetary
damages for breach  of the  fiduciary duty of  "care." Minnesota  law does  not,
however,  permit a corporation to eliminate or limit the liability of a director
(i) for any breach of the director's duty of "loyalty" to the corporation or its
shareholders, (ii)  for acts  or omissions  not in  good faith  or that  involve
intentional  misconduct or a  knowing violation of law,  (iii) for authorizing a
dividend, stock repurchase or redemption  or other distribution in violation  of
Minnesota  law or  for violation of  certain provisions  of Minnesota securities
laws, or (iv) for  any transaction from which  the director derived an  improper
personal  benefit.  The Articles  of Incorporation  of  Fortis Series  limit the
liability of directors to  the fullest extent  permitted by Minnesota  statutes,
except  to the extent that such a liability cannot be limited as provided in the
1940 Act  (which  act  prohibits  any provisions  which  purport  to  limit  the
liability  of directors  arising from  such directors'  willful misfeasance, bad
faith, gross negligence,  or reckless disregard  of the duties  involved in  the
conduct of their role as directors).
 
Minnesota  law does not eliminate the duty of "care" imposed upon a director. It
only authorizes a corporation to eliminate monetary liability for violations  of
that  duty. Minnesota law, further, does not permit elimination or limitation of
liability of  "officers"  to the  corporation  for  breach of  their  duties  as
officers  (including the liability of directors who serve as officers for breach
of their  duties as  officers). Minnesota  law does  not permit  elimination  or
limitation  of  the  availability of  equitable  relief, such  as  injunctive or
rescissionary relief.  Further, Minnesota  law does  not permit  elimination  or
limitation  of a director's  liability under the  Securities Act of  1933 or the
Securities Exchange Act of 1934, and it is uncertain whether and to what  extent
the  elimination  of monetary  liability would  extend  to violations  of duties
imposed on directors by the 1940 Act and the rules and regulations adopted under
such Act.
 
ADDITIONAL INFORMATION
 
Fortis Series has filed with the Securities and Exchange Commission, Washington,
D.C. 20549,  a Registration  Statement  under the  Securities  Act of  1933,  as
amended,  with respect  to the common  stock offered hereby.  The Prospectus and
this Statement of Additional Information do  not contain all of the  information
set  forth in the Registration Statement, certain  parts of which are omitted in
accordance with  Rules  and  Regulations of  the  Commission.  The  Registration
Statement  may be  inspected at  the principal office  of the  Commission at 450
Fifth Street, N.W., Washington,  D.C., and copies thereof  may be obtained  from
the Commission at prescribed rates.
 
                                       60
<PAGE>
APPENDIX
 
DESCRIPTION OF FUTURES, OPTIONS AND FORWARD CONTRACTS
 
OPTIONS ON SECURITIES
 
An option on a security provides the purchaser, or "holder," with the right, but
not the obligation, to purchase, in the case of a "call" option, or sell, in the
case  of a "put" option, the security or securities underlying the option, for a
fixed exercise price up to a stated  expiration date or, in the case of  certain
options,  on such date. The  holder pays a nonrefundable  purchase price for the
option, known as the "premium." The maximum amount of risk the purchaser of  the
option  assumes is equal to the premium plus related transaction costs, although
this entire amount may be lost. The risk of the seller, or "writer," however, is
potentially unlimited, unless the option is "covered." A call option written  by
the  Series is "covered" if  the Series owns the  underlying security covered by
the call or has an absolute and immediate right to acquire that security without
additional cash consideration (or  for additional cash  consideration held in  a
segregated  account  by  its custodian)  upon  conversion or  exchange  of other
securities held in its portfolio.  A call option is  also covered if the  Series
holds  a call on the same security and  in the same principal amount as the call
written where the exercise price of the call  held (a) is equal to or less  than
the exercise price of the call written or (b) is greater than the exercise price
of  the call written if  the difference is maintained by  the Series in cash and
high grade government securities in a  segregated account with its custodian.  A
put  option written by the Series is  "covered" if the Series maintains cash and
high grade government securities with a value  equal to the exercise price in  a
segregated  account with its custodian, or else holds a put on the same security
and in the same principal amount as the put written where the exercise price  of
the  put held is equal to or greater than the exercise price of the put written.
If the writer's obligation is not so covered,  it is subject to the risk of  the
full  change in  value of the  underlying security  from the time  the option is
written until exercise.
 
Upon exercise of the option, the holder is required to pay the purchase price of
the underlying  security, in  the  case of  a call  option,  or to  deliver  the
security  in  return  for  the purchase  price  in  the case  of  a  put option.
Conversely, the writer is  required to deliver  the security, in  the case of  a
call  option, or to purchase the security, in  the case of a put option. Options
on securities which have been  purchased or written may  be closed out prior  to
exercise  or  expiration  by  entering into  an  offsetting  transaction  on the
exchange  on  which  the  initial  position  was  established,  subject  to  the
availability of a liquid secondary market.
 
Options on securities and options on indexes of securities, discussed below, are
traded  on  national securities  exchanges, such  as  the Chicago  Board Options
Exchange and the New York  Stock Exchange, which are  regulated by the SEC.  The
Options  Clearing Corporation  guarantees the  performance of  each party  to an
exchange-traded option,  by in  effect taking  the opposite  side of  each  such
option. A holder or writer may engage in transactions in exchange-traded options
on  securities and  options on indexes  of securities only  through a registered
broker-dealer which is a member of the exchange on which the option is traded.
 
In addition, options on securities and  options on indexes of securities may  be
traded  on  exchanges located  outside  the United  States  and over-the-counter
through financial institutions dealing in such options as well as the underlying
instruments. The  particular  risks of  transactions  on foreign  exchanges  and
over-the-counter  transactions  are set  forth more  fully  in the  Statement of
Additional Information.
 
OPTIONS ON STOCK INDEXES
 
In contrast to an option on a security, an option on a stock index provides  the
holder  with the right to make or receive a cash settlement upon exercise of the
option, rather than the right to purchase or sell a security. The amount of this
settlement is equal to (a) the amount, if any, by which the fixed exercise price
of the option exceeds (in the case of a call) or is below (in the case of a put)
the closing value of the underlying index on the date of exercise, multiplied by
(b) a fixed "index multiplier." The  purchaser of the option receives this  cash
settlement amount if the closing level of the stock index on the day of exercise
is  greater than, in the case of a call, or less than, in the case of a put, the
exercise price of the option. The writer  of the option is obligated, in  return
for  the premium  received, to  make delivery  of this  amount if  the option is
exercised. As in the  case of options  on securities, the  writer or holder  may
liquidate  positions in stock  index options prior to  exercise or expiration by
entering into closing transactions on the exchange on which such positions  were
established, subject to the availability of a liquid secondary market.
 
The  Series will cover all  options on stock indexes  by owning securities whose
price changes, in the opinion of Advisers (or a sub-adviser, if applicable), are
expected to be similar to those of the index, or in such other manner as may  be
in  accordance with the rules of the exchange  on which the option is traded and
applicable laws and regulations.  Nevertheless, where the  Series covers a  call
option on a stock index through ownership of securities, such securities may not
match  the composition of the index. In that event, the Series will not be fully
covered and could be subject to risk of loss in the event of adverse changes  in
the  value of the index. The Series will  secure put options on stock indexes by
segregating assets equal to the option's exercise price, or in such other manner
as may be in accordance  with the rules of the  exchange on which the option  is
traded and applicable laws and regulations.
 
The  index underlying a stock option index may be a "broad-based" index, such as
the Standard & Poor's 500 Index or the New York Stock Exchange Composite  Index,
the  changes in value  of which ordinarily  will reflect movements  in the stock
market in  general. In  contrast, certain  options may  be based  upon  narrower
market  indexes,  such as  the Standard  & Poor's  100 Index,  or on  indexes of
securities of  particular industry  groups, such  as  those of  oil and  gas  or
technology  companies.  A  stock index  assigns  relative values  to  the stocks
included in the index and the index fluctuates with changes in the market values
of the stocks so included.
 
FUTURES  CONTRACTS  ON  FIXED  INCOME  SECURITIES,  STOCK  INDEXES  AND  FOREIGN
CURRENCIES
 
A  Futures Contract is a bilateral agreement providing for the purchase and sale
of a specified type and amount of a financial instrument or foreign currency, or
for the making  and acceptance of  a cash settlement,  at a stated  time in  the
future  for  a fixed  price. By  its terms,  a Futures  Contract provides  for a
specified settlement date on which, in the case of the majority of interest rate
and foreign currency futures contracts, the fixed income securities or  currency
underlying  the  contract  are delivered  by  the  seller and  paid  for  by the
purchaser, or on which, in the case of stock index futures contracts and certain
interest rate and foreign currency futures contracts, the difference between the
price at which the contract was entered into and the contract's closing value is
settled between the purchaser and the  seller in cash. Futures Contracts  differ
from  options in that they are bilateral agreements, with both the purchaser and
the seller equally obligated to complete the transaction. Futures Contracts call
for settlement only  on the expiration  date, and cannot  be "exercised" at  any
other time during their term.
 
The  purchase or sale of a Futures Contract differs from the purchase or sale of
a security or the  purchase of an option  in that no purchase  price is paid  or
received.  Instead, an amount of cash or  cash equivalents, which varies but may
be as low as 5% or less of the value of the contract, must be deposited with the
broker as "initial margin." Subsequent payments to and from the broker, referred
to as "variation margin," are made on a daily basis as the value of the index or
instrument underlying the Futures Contract  fluctuates, making positions in  the
Futures  Contracts more  or less  valuable, a process  known as  "marking to the
market."
 
U.S. Futures Contracts may be purchased or sold only on an exchange, known as  a
"contract  market," designated by the CFTC for the trading of such contract, and
only through a registered futures commission merchant which is a member of  such
contract  market. A commission must be paid  on each completed purchase and sale
transaction. The contract  market clearing house  guarantees the performance  of
each  party to a Futures Contract, by in effect taking the opposite side of such
contract. At any time prior  to the expiration of  a Futures Contract, a  trader
may  elect  to close  out its  position by  taking an  opposite position  on the
contract market  on  which  the  position  was  entered  into,  subject  to  the
availability of a secondary market,
 
                                       61
<PAGE>
which  will operate  to terminate  the initial position.  At that  time, a final
determination of variation margin is made and any loss experienced by the trader
is required to be paid  to the contract market  clearing house while any  profit
due  to the trader must be delivered to it. Futures Contracts may also be traded
on foreign exchanges.
 
Interest rate  Futures Contracts  currently are  traded on  a variety  of  fixed
income  securities,  including long-term  U.S.  Treasury Bonds,  Treasury Notes,
Government National Mortgage  Association modified pass-through  mortgage-backed
securities  ,  and  U.S.  Treasury Bills.  In  addition,  interest  rate Futures
Contracts include contracts on indexes of municipal securities. Foreign currency
Futures Contracts currently are  traded on the  British pound, Canadian  dollar,
Japanese yen, Swiss franc, West German mark, and on Eurodollar deposits.
 
A  stock  index  or Eurodollar  Futures  Contract  provides for  the  making and
acceptance of a cash settlement in much the same manner as the settlement of  an
option  on a stock  index. The types  of indexes underlying  stock index futures
contracts are essentially the same as  those underlying stock index options,  as
described above. The index underlying a municipal bond index futures contract is
a broad-based index of municipal securities designed to reflect movements in the
municipal securities market as a whole. The index assigns weighted values to the
securities included in the index and its composition is changed periodically.
 
OPTIONS ON FUTURES CONTRACTS
 
An Option on a Futures Contract provides the holder with the right to enter into
a  "long" position  in the underlying  Futures Contract,  in the case  of a call
option, or a "short" position in the underlying Futures Contract, in the case of
a put option, at a  fixed exercise price up to  a stated expiration date or,  in
the  case of certain options,  on such date. Upon exercise  of the option by the
holder, the contract  market clearing  house establishes  a corresponding  short
position  for the  writer of  the option,  in the  case of  a call  option, or a
corresponding long position, in the case of  a put option. In the event that  an
option  is exercised, the  parties will be  subject to all  the risks associated
with the  trading of  Futures Contracts,  such as  payment of  variation  margin
deposits. In addition, the writer of an Option on a Futures Contract, unlike the
holder,  is subject to  initial and variation margin  requirements on the option
position.
 
A position in an Option on a Futures Contract may be terminated by the purchaser
or the  seller prior  to expiration  by  affecting a  closing purchase  or  sale
transaction,  subject to the availability of a liquid secondary market, which is
the purchase or sale of  an option of the same  series (i.e., the same  exercise
price  and  expiration date)  as the  option previously  purchased or  sold. The
difference between the premiums paid and received represents the trader's profit
or loss on the transaction.
 
Options on Futures  Contracts that  are written or  purchased by  the Series  on
United States exchanges are traded on the same contract market as the underlying
Futures  Contract and, like Futures Contracts,  are subject to regulation by the
CFTC and the performance guarantee of the exchange clearing house. In  addition,
Options on Futures Contracts may be traded on foreign exchanges.
 
An  option, whether  based on  a Futures Contract,  a stock  index, or security,
becomes worthless to the holder when it expires. Upon exercise of an option, the
exchange or contract market clearing house assigns exercise notices on a  random
basis  to those of its members which have written options of the same series and
with the same  expiration date.  A brokerage  firm receiving  such notices  then
assigns  them on  a random basis  to those  of its customers  which have written
options of  the same  series and  expiration  date. A  writer therefore  has  no
control over whether an option will be exercised against it, nor over the timing
of such exercise.
 
FOREIGN CURRENCY FORWARD EXCHANGE CONTRACTS
 
A  foreign  currency  forward  exchange contract  (a  "Forward  Contract")  is a
contractual obligation  to purchase  or  sell a  specific  quantity of  a  given
foreign  currency for a fixed exchange rate  at a future date. Forward Contracts
are individually  negotiated  and are  traded  through the  "interbank  currency
market,"  an informal network of banks and brokerage firms which operates around
the clock and throughout the world. Transactions in the interbank market may  be
executed  only  through financial  institutions acting  as market-makers  in the
interbank market, or through brokers exercising purchases and sales through such
institutions. Market-makers in the interbank market generally act as  principals
in  taking the opposite side of their customers' positions in Forward Contracts,
and ordinarily charge a mark-up commission which may be included in the cost  of
the  Forward Contract. In addition, market-makers may require their customers to
deposit collateral upon entering  into a Forward Contract,  as security for  the
customer's  obligation to make  or receive delivery of  currency, and to deposit
additional collateral  if  exchange  rates  move  adversely  to  the  customer's
position.  Such deposits may  function in a  manner similar to  the margining of
Futures Contracts, described above.
 
Prior to the stated maturity date of  a Forward Contract, it may be possible  to
liquidate  the transaction by entering into  an offsetting contract. In order to
do so, however, a customer  may be required to  maintain both contracts as  open
positions  until maturity and to make or  receive a settlement of the difference
owed to or from the market-maker or broker at that time.
 
OPTIONS ON FOREIGN CURRENCIES
 
Options on foreign currencies  are traded in a  manner substantially similar  to
options on securities. In particular, an option on foreign currency provides the
holder  with the right to purchase, in the case of a call option, or to sell, in
the case of a put option, a stated quantity of a particular currency for a fixed
price up to a stated expiration date or, in the case of certain options, on such
date. The writer of the option undertakes the obligation to deliver, in the case
of a call option, or to purchase, in  the case of a put option, the quantity  of
the  currency  called for  in the  option, upon  exercise of  the option  by the
holder.
 
As in the case  of other types of  options, the holder of  an option on  foreign
currency  is required to pay a one-time, nonrefundable premium, which represents
the cost of purchasing the option. The holder can lose the entire amount of this
premium, as well as  related transaction costs, but  not more than this  amount.
The writer of the option, in contract, generally is required to make initial and
variation margin payments, similar to margin deposits required in the trading of
Futures  Contracts and  the writing  of other  types of  options. The  writer is
therefore subject to  risk of  loss beyond  the amount  originally invested  and
above the value of the option at the time it is entered into.
 
Certain  options  on foreign  currencies,  like Currency  Contracts,  are traded
over-the-counter through financial institutions acting as market-makers in  such
options and the underlying currencies. Such transactions therefore involve risks
not  generally associated with exchange-traded  instruments, which are discussed
below. Options on foreign currencies may  also be traded on national  securities
exchanges regulated by the SEC and on exchanges located in foreign countries.
 
Over-the-counter  transactions  can  only  be  entered  into  with  a  financial
institution willing to  take the  opposite side,  as principal,  of the  Series'
position,  unless the  institution acts  as broker and  is able  to find another
counterparty willing to  enter into the  transaction with the  Series. Where  no
such  counterparty is available, it will not be possible to enter into a desired
transaction. There also  may be  no liquid secondary  market in  the trading  of
over-the-counter  contracts, and the Series could  be required to retain options
purchased or written until exercise, expiration or maturity. This in turn  could
limit  the Series'  ability to  profit from open  positions or  to reduce losses
experienced, and could result in greater losses.
 
Further, over-the-counter transactions are  not subject to  the guarantee of  an
exchange clearing house, and the Series will therefore be subject to the risk of
default  by,  or the  bankruptcy of,  the financial  institution serving  as its
counterparty. One or more  of such institutions also  may decide to  discontinue
their  role  as  market-makers in  a  particular currency  or  security, thereby
restricting the Series' ability to enter into desired hedging transactions.  The
Series  will enter into an over-the-counter  transaction only with parties whose
creditworthiness has been reviewed and found satisfactory by Advisers.
 
   
96724 (REV. 5/98)
    
 
                                       62
<PAGE>

                                  [LETTERHEAD]

                          Independent Auditors' Report

The Shareholder and Board of Directors of
Fortis Series Fund, Inc.:

We have audited the accompanying statements of assets and liabilities of Mid 
Cap Stock Series, Small Cap Value Series and Large Cap Growth Series 
(portfolios within Fortis Series Fund, Inc.) as of March 25, 1998. These 
financial statements are the responsibility of the fund's management. Our 
responsibility is to express an opinion on this financial statement based on 
our audit.

We conducted our audit in accordance with generally accepted auditing 
standards. Those standards require that we plan and perform the audit to 
obtain reasonable assurance about whether the financial statements are free of 
material misstatement. An audit of a financial statement includes examining, 
on a test basis, evidence supporting the amounts and disclosures in the 
financial statement. Our procedures included confirmation of cash owned with 
the custodian. An audit also includes assessing the accounting principles 
used and significant estimates made by management, as well as evaluating the 
overall financial statement presentation. We believe that our audit provides 
a reasonable basis for our opinion.

In our opinion, the statements of assets and liabilities referred to above 
present fairly, in all material respects, the financial position of Mid Cap 
Stock Series, Small Cap Value Series and Large Cap Growth Series as of 
January 27, 1998, in conformity with generally accepted principles.

                                          /s/ KPMG Peat Marwick LLP

Minneapolis, Minnesota
March 25, 1998


[LOGO]
<PAGE>

FORTIS SERIES FUND, INC.
STATEMENTS OF ASSETS AND LIABILITIES

MARCH 25, 1998

<TABLE>
<CAPTION>

                                              MID CAP   SMALL CAP  LARGE CAP
                                              STOCK     VALUE      GROWTH
                                              SERIES    SERIES     SERIES
                                              -------   ---------  ---------
<S>                                           <C>       <C>        <C>
Assets:
    Cash on deposit with custodian            $    10    $    10    $    10
    Deferred organization expenses (Note 1)    10,666     10,667     10,667
                                              -------    -------    -------
Total Assets                                   10,676     10,677     10,677
                                              -------    -------    -------

Liabilities:
    Accrued expenses                           10,666     10,667     10,667
                                              -------    -------    -------
Total Liabilities                              10,666     10,667     10,667
                                              -------    -------    -------
Net Assets:
    Net proceeds of capital stock, par 
    value $.01 per share-authorized
    20,000,000,000 shares; outstanding
    1; 1; 1 shares, respectively                   10         10         10
                                              -------    -------    -------
Total Net Assets                              $    10    $    10    $    10
                                              -------    -------    -------
                                              -------    -------    -------
Net Asset Value Per Share:                    $ 10.00    $ 10.00    $ 10.00
                                              -------    -------    -------

</TABLE>

See accompanying Notes to Financial Statement.

<PAGE>

                            FORTIS SERIES FUND, INC.
                           Notes to Financial Statement

1.   Summary of Significant Accounting Policies:
     The Series are separate diversified investment portfolios and series of 
     capital stock of Fortis Series Fund, Inc., an open-end management 
     investment company. The investment objectives of the Series are as 
     follows:

     -   The objective of the "Mid Cap Stock Series" is total investment 
         return (including capital appreciation and income) that consistently 
         outperforms the Standard & Poor's 400 Mid Cap Index. The Series 
         Fund attempts to maintain a diversified holding in common stocks of 
         medium capitalization companies with a market value between $200 
         million and $5 billion.

    -    The objective of the "Small Cap Value Series" is capital 
         appreciation. The Series invests primarily in common stocks of small 
         companies that are out of favor with markets or that have not yet 
         been discovered by the broader investment community and are therefore 
         believed to be undervalued.

    -    The objective of the "Large Cap Growth Series" is long-term growth 
         of capital. The Series invests primarily in the equity securities of 
         a limited number of large, carefully selected, high quality U.S. 
         companies whose securities are believed likely to achieve superior 
         earnings growth.

    The Articles of Incorporation of Fortis Series Fund, Inc. permits the 
    Board of Directors to create additional portfolios in the future.

    Shares of the Series will not be sold directly to the public, but sold 
    only to Fortis Benefits Insurance Company or First Fortis Life separate 
    accounts in connection with variable insurance contracts and policies.

    The inception of the Portfolios was April 3, 1998, and the commencement 
    of operations is anticipated to be May 1, 1998.

    Deferred Cost: Organizational costs are deferred and charged to income on 
    a 60-month straight line basis, beginning with the commencement of 
    operations.

2.  Payment to Related Parties:
    Fortis Advisers, Inc. is the investment adviser for each Series. 
    Investment advisory and management fees are based on each Series' average 
    daily net assets and decrease in reduced percentages as average daily net 
    assets increase. The following chart represents the annual fee 
    percentages:


<TABLE>
<CAPTION>
                                                                 Annual
                                                               Investment
                                                              Advisory and
           Series                  Average Net Assets        Management Fee
    --------------------      ----------------------------   --------------
<S>                       <C>                            <C>
    Mid Cap Stock Series      For the first $100 million         .90%
                              For the next $150 million          .85%
                              For assets over $250 million       .80%



<PAGE>

    Small Cap Value Series    For the first $50 million          .90%
                              For assets over $50 million        .85%

    Large Cap Growth Series   For the first $100 million         .90%
                              For the next $100 million          .85%
                              For assets over $200 million       .80%

</TABLE>

    The three Series have retained sub-advisers under an investment 
    sub-advisory agreement to provide investment advice and, in general, to 
    conduct the management investment program of each portfolio, subject to 
    the general control of Fortis Advisers and the Board of Directors of the 
    Fortis Series Fund, Inc. Pursuant to the sub-advisory agreements, each 
    sub-adviser will regularly provide its respective portfolio with 
    investment research, advice and supervision and furnish continuously an 
    investment program for each portfolio consistent with its investment 
    objectives and policies, including the purchase, retention and 
    disposition of securities.

    From its advisory fee, Fortis Advisers pays the following fees to each of 
    the sub-advisers:

<TABLE>
<CAPTION>
                                                                        Annual Sub-
             Series          Sub-Adviser      Average Net Assets        Advisory Fee
    -----------------------  -----------  ----------------------------  ------------
<S>                          <C>          <C>                           <C>
    Mid Cap Stock Series       Dreyfus    For the first $100 million         .50%
                                          For the next $150 million          .45%
                                          For assets over $250 million       .40%

    Small Cap Value Series     Berger     For the first $50 million          .50%
                             Associates   For assets over $50 million        .45%

    Large Cap Growth Series   Alliance    For the first $100 million         .50%
                                          For the next $100 million          .45%
                                          For assets over $200 million       .40%

</TABLE>

    Legal fees incurred will be paid to a law firm which the secretary of the 
    Fund is a partner.
<PAGE>

                                        PART C

                               Fortis Series Fund, Inc.

                                  OTHER INFORMATION

ITEM 24.  FINANCIAL STATEMENTS AND EXHIBITS

(a)  Financial statements are incorporated by reference to the Registrant's
     Annual Report previously filed with the Commission.

(b)  Exhibits:

  1.1     Amended and Restated Articles of Incorporation (1)
  1.2     Certificate of Designation of Series G Common Shares, Series H Common
          Shares and Series I Common Shares (1)
  1.3     Certificate of Designation of Series J Common Shares, Series K Common
          Shares and Series L Common Shares (1)
  1.4     Certificate of Designation of Series M Common Shares, Series N Common
          Shares and Series O Common Shares (2)
  1.5     Certificate of Designation of Series P Common Shares, Series Q Common
          Shares and Series R Common Shares (7)
  2.      Amended and Restated Bylaws (amended 3/19/98) (7)
  3.      Not applicable
  4.      Not applicable
  5.1     Form of Investment Advisory and Management Agreement between the
          Registrant and Fortis Advisers, Inc. (3)
  5.2     Form of Investment Advisory and Management Agreement between the
          Registrant and Fortis Advisers, Inc. (on behalf of High Yield Series,
          Growth & Income Series and Aggressive Growth Series) (4)
  5.3     Form of Investment Advisory and Management Agreement between the
          Registrant and Fortis Advisers, Inc. (on behalf of International Stock
          Series, Global Bond Series and Global Asset Allocation Series) (5)
  5.4     Investment Advisory and Management Agreement between the Registrant
          and Fortis Advisers, Inc. (on behalf of Small Cap Value Series, Mid
          Cap Stock Series and Large Cap Growth Series) dated 4/2/98 (7)
  5.5     Form of Investment Sub-Advisory and Management Agreement between
          Fortis Advisers, Inc. and Lazard Freres Asset Management (on behalf of
          International Stock Series) (5)
  5.6     Form of Investment Sub-Advisory and Management Agreement between
          Fortis Advisers, Inc. and Warburg Investment Management International
          Ltd. (on behalf of Global Bond Series) (5)
  5.7     Form of Investment Sub-Advisory and Management Agreement between
          Fortis Advisers, Inc. and Morgan Stanley Asset Management Limited (on
          behalf of Global Asset Allocation Series) (5)


                                          1
<PAGE>

  5.8     Form of Investment Advisory and Management Agreement between the
          Registrant and Fortis Advisers, Inc. for Value Series, S&P 500 Index
          Series and Blue Chip Stock Series (1)
  5.9     Investment Sub-Advisory and Management Agreement between Fortis
          Advisers, Inc. and The Dreyfus Corporation (on behalf of S&P 500 Index
          Series) (2)
  5.10    Investment Sub-Advisory and Management Agreement between Fortis
          Advisers, Inc. and T. Rowe Price Associates, Inc. (on behalf of Blue
          Chip Stock Series) (2)
  5.11    Investment Sub-Advisory and Management Agreement between Fortis
          Advisers, Inc. and The Dreyfus Corporation (on behalf of Mid Cap Stock
          Series) dated 4/3/98 (7)
  5.12    Investment Sub-Advisory and Management Agreement between Fortis
          Advisers, Inc. and Berger Associates, Inc. (on behalf of Small Cap
          Value Series) dated 4/2/98 (7)
  5.13    Investment Sub-Advisory and Management Agreement between Fortis
          Advisers, Inc. and Alliance Capital Management L.P. (on behalf of
          Large Cap Growth Series) dated 4/2/98 (7)
  5.14    Sub-Management Agreement between Berger Associates, Inc. and Perkins,
          Wolf, McDonnell & Company (on behalf of Small Cap Value Series) dated
          4/2/98 (7)
  6.1     Form of Underwriting and Distribution Agreement (1)
  6.2     Dealer Sales Agreement (3)
  7.      Not applicable
  8.1     Custody Agreement (2)
  8.2     Exhibit A amended 4/2/98 to Custody Agreement (7)
  8.3     Custody Agreement for Global Growth Series, International Stock
          Series, Global Bond Series, Global Assets Allocation Series and Blue
          Chip Stock Series (2)
  9.      Not applicable
  10.1    Opinion and Consent of Dorsey & Whitney LLP (3)
  10.2    Opinion and Consent of Dorsey & Whitney LLP (4)
  10.3    Opinion and Consent of Dorsey & Whitney LLP for Series J, Series K and
          Series L Common Shares (5)
  10.4    Opinion and Consent of Dorsey & Whitney LLP for Series M, Series N and
          Series O Common Shares (2)
  10.5    Opinion and Consent of Dorsey & Whitney LLP for Series P, Series Q and
          Series R Common Shares (7)
  11.     Consent of KPMG Peat Marwick LLP (7)
  12.     Not applicable
  13.     Not applicable
  14.     Not applicable     
  15.     Not applicable
  16.     Performance Quotation Computation Schedule (6)
  18.     Not applicable

- ----------------------
                          


                                          2
<PAGE>

(1)  Incorporated by reference to Post-Effective Amendment No. 18 to the
     Registrant's Registration Statement on Form N-1A filed with the Commission
     in February 1996.
(2)  Incorporated by reference to Post-Effective Amendment No. 19 to the
     Registrant's Registration Statement on Form N-1A filed with the Commission
     in April 1996.
(3)  Incorporated by reference to Post-Effective Amendment No. 11 to the
     Registrant's Registration Statement on Form N-1A filed with the Commission
     in October 1992.
(4)  Incorporated by reference to Post-Effective Amendment No. 13 to the
     Registrant's Registration Statement on Form N-1A filed with the Commission
     in February 1994.
(5)  Incorporated by reference to Post-Effective Amendment No. 14 to the
     Registrant's Registration Statement on Form N-1A filed with the Commission
     in October 1994.
(6)  Incorporated by reference to Post-Effective Amendment No. 7 to the
     Registrant's Registration Statement on Form N-1A filed with the Commission
     in March 1990.
(7)  Filed herewith.

ITEM 25. PERSONS CONTROLLED BY OR UNDER COMMON CONTROL WITH REGISTRANT

     No person is directly or indirectly controlled by or under common control
with the Registrant.

ITEM 26.  NUMBER OF HOLDERS OF SECURITIES

     As of April 30, 1998, there were the following number of record holders of 
Common Shares of each Series then outstanding:

     Series A       Growth Stock Series                     3
     Series B       U.S. Government Securities Series       3
     Series C       Money Market Series                     3
     Series D       Managed Series                          3
     Series E       Income Series                           3
     Series F       Global Growth Series                    3
     Series G       High Yield Series                       3
     Series H       Growth & Income Series                  3
     Series I       Aggressive Growth Series                3
     Series J       International Stock Series              3
     Series K       Global Bond Series                      3
     Series L       Global Asset Allocation Series          3
     Series M       Value Series                            3
     Series N       S&P 500 Index Series                    3
     Series O       Blue Chip Stock Series                  3

  Series P, Series Q and Series R had not commenced operations as of this date.


                                          3
<PAGE>

ITEM 27.  INDEMNIFICATION

     Refer to Post-Effective Amendment No. 5 to the Registrant's Registration
Statement filed with the Commission in February 1988, which is incorporated
herein by reference.

ITEM 28.  BUSINESS AND OTHER CONNECTIONS OF INVESTMENT ADVISER

     Information on the business of the Adviser is described in the Statement of
Additional Information.  In addition to those listed in the Statement of
Additional Information:

<TABLE>
<CAPTION>
                                                                      Other Business/Employment
Name                               Position with Adviser              During Past Two Years
- ----                               ---------------------              -------------------------
<S>                                <C>                                <C>
Michael D. O'Connor                Qualified Plan Officer             Qualified Plan Officer of Fortis
                                                                      Benefits Insurance Company
David C. Greenzang                 Money Market Portfolio             Debt securities manager with
                                   Officer                            Fortis, Inc.
</TABLE>

ITEM 29.  PRINCIPAL UNDERWRITERS

(a)  Fortis Advantage Portfolios, Inc.
     Fortis Equity Portfolios, Inc.
     Fortis Fiduciary Fund, Inc.
     Fortis Income Portfolios, Inc.
     Fortis Money Portfolios, Inc.
     Fortis Securities, Inc.
     Fortis Series Fund, Inc.
     Fortis Tax-Free Portfolios, Inc.
     Fortis Worldwide Portfolios, Inc.
     Variable Account A of First Fortis Life Insurance Company
     Variable Account C of Fortis Benefits Insurance Company
     Variable Account D of Fortis Benefits Insurance Company

(b)  In addition to those listed in the Statement of Additional Information:

<TABLE>
<CAPTION>
                                   Positions and Offices           Positions and Offices
      Name/Address                   with Underwriter                 with Registrant     
- --------------------------    ---------------------------------    ---------------------
<S>                           <C>                                  <C>
Carol M. Houghtby             Vice President and                   Accounting Officer
500 Bielenberg Drive          Treasurer
Woodbury, MN
</TABLE>

(c)  Not applicable.

ITEM 30.  LOCATION OF ACCOUNTS AND RECORDS

     The physical possession of the accounts, books, and other documents
required to be maintained by Section 31(a) of the Investment Company Act of 1940
and


                                          4
<PAGE>

Rules 3la-1 to 3la-3 promulgated thereunder is maintained by the Registrant at
Fortis Advisers, Inc., 500 Bielenberg Drive, Woodbury, MN  55125.

ITEM 31.  MANAGEMENT SERVICES

     Not applicable.

ITEM 32.  UNDERTAKINGS

(a)  Not applicable.

(b)  Not applicable.

(c)  Each recipient of a prospectus of any series of the Registrant may request
the latest Annual Report of such series, and such Annual Report will be
furnished by the Registrant without charge.
<PAGE>
                                      SIGNATURES

          Pursuant to the requirements of the Securities Act of 1933 and the
Investment Company Act of 1940, the Registrant certifies that it meets all of
the requirements for effectiveness of this Registration Statement on Form N-1A
pursuant to Rule 485(b) under the Securities Act of 1933 and has duly caused
this Registration Statement to be signed on its behalf by the undersigned,
thereunto duly authorized, in the City of Woodbury and State of Minnesota on
April 30, 1998.
          
                                           FORTIS SERIES FUND, INC.
                                           (Registrant)

   
                                           By    /s/ Dean C. Kopperud
                                              ---------------------------
                                              Dean C. Kopperud, President

          Pursuant to the requirements of the Securities Act of 1933, this
Registration Statement has been signed below by the following persons in the
capacities and on the dates indicated:

/s/ Dean C. Kopperud             President (principal)      April 30, 1998
- ----------------------------     executive officer)
Dean C. Kopperud                 

/s/ Tamara L. Fagely             Treasurer (principal       April 30, 1998
- ----------------------------     financial and
Tamara L. Fagely                 accounting officer)

Richard W. Cutting*              Director

Allen R. Freedman*               Director

Robert M. Gavin*                 Director

Jean L. King*                    Director

Edward M. Mahoney*               Director

Robb L. Prince*                  Director

Leonard J. Santow*               Director

Joseph M. Wikler*                Director


*By  /s/ Dean C. Kopperud                                   April 30, 1998
    ---------------------------
     Dean C. Kopperud, Attorney-in-Fact
     (Pursuant to a Power of Attorney dated March 21, 1996)

<PAGE>
                                                           Exhibit 1.5(c)

                              CERTIFICATE OF DESIGNATION
                                          OF
                               SERIES P COMMON SHARES,
                               SERIES Q COMMON SHARES,
                                         AND
                                SERIES R COMMON SHARES
                                          OF
                               FORTIS SERIES FUND, INC.

          The undersigned duly elected Secretary of Fortis Series Fund, Inc., a
Minnesota corporation (the "Corporation"), hereby certifies that the following
is a true, complete and correct copy of resolutions duly adopted by a majority
of the directors of the Board of Directors of the Corporation on March 19, 1998.

                       DESIGNATION OF SERIES P COMMON SHARES,
                              SERIES Q COMMON SHARES,
                             AND SERIES R COMMON SHARES

          WHEREAS, the total authorized number of shares of the Corporation is
20,000,000,000, all of which shares are common shares, $.01 par value per share,
as set forth in the Corporation's Articles of Incorporation, as amended; and

          WHEREAS, of said total authorized shares, 2,000,000,000 shares have
been designated Series A Common Shares, 2,000,000,000 shares have been
designated Series B Common Shares, 2,000,000,000 shares have been designated
Series C Common Shares, 2,000,000,000 shares have been designated Series D
Common Shares, 500,000,000 shares have been designated Series E Common Shares,
1,500,000,000 shares have been designated Series F Common Shares, 1,000,000,000
shares have been designated as Series G Common Shares, 1,000,000,000 shares have
been designated Series H Common Shares, 1,000,000,000 shares have been
designated Series I Common Shares, 1,000,000,000 shares have been designated
Series J Common Shares, 1,000,000,000 shares have been designated Series K
Common Shares, 1,000,000,000 shares have been designated Series L Common Shares,
500,000,000 shares have been designated Series M Common Shares, 500,000,000
shares have been designated Series N Common Shares, and 500,000,000 shares have
been designated Series O Common Shares; and

          WHEREAS, said Articles of Incorporation, as amended, set forth that
the balance of 2,500,000,000 authorized but unissued common shares may be issued
in such series with such designations, preferences and relative, participating,
optional or other special rights or qualifications, limitations or restrictions
thereof, as shall be stated or expressed in a resolution or resolutions
providing for the issue of any series of common shares as may be adopted from
time to time by the Board of Directors of the Corporation;

          NOW, THEREFORE, BE IT RESOLVED, that of the remaining 2,500,000,000
authorized but unissued common shares of the Corporation 500,000,000 be, and
hereby are, designated as Series P Common Shares, 500,000,000 be, and hereby
are, designated as Series Q Common Shares, and 500,000,000 be, and hereby are,
designated as Series R Common Shares, and each of said Series P


                                         -1-
<PAGE>

Common Shares, Series Q Common Shares, and Series R Common Shares shall
represent interests in a separate and distinct portion of the Corporation's
assets and liabilities which shall take the form of a separate portfolio of
investment securities, cash, other assets and liabilities.

          BE IT FURTHER RESOLVED, that Articles 5, 6 and 7 of the Articles of
Incorporation, as amended, of the Corporation setting forth the preferences and
relative, participating, optional or other special rights, and qualifications,
limitations and restrictions thereof, of and among each series of common shares
be, and they hereby are, adopted as the preferences and relative, participating,
optional and other rights, and the qualifications, limitations and restrictions
thereof, of and among the Series P Common Shares, Series Q Common Shares, and
Series R Common Shares and the other series of the Corporation designated
previously by the Corporation.

          BE IT FURTHER RESOLVED, that the officers of the Corporation are
hereby authorized and directed to file with the office of the Secretary of State
of Minnesota, a Certificate of Designation setting forth the relative rights and
preferences of the Series P Common Shares, Series Q Common Shares, and Series R
Common Shares, as required by Subd. 3(b) of Section 401 of the Minnesota
Business Corporation Act.

          BE IT FURTHER RESOLVED, that there is hereby authorized the issuance
of each of said Series P Common Shares, Series Q Common Shares, and Series R
Common Shares, provided that such shares shall be issued at a price no less than
their net asset value per share.

          BE IT FURTHER RESOLVED, that upon receipt of the issuance price for
the shares authorized to be issued hereinabove, either in connection with the
original issues of the shares or the issue following the redemption of such
shares by the Corporation (and after filing pursuant to Minnesota Statutes,
Section 302A.401, Subd. 3(b), a statement with the Secretary of State of the
State of Minnesota setting forth the name of the Corporation and the text of the
relevant portions of these resolutions and certifying the adoption of such
portions of these resolutions and the date of adoption), the officers of the
Corporation are hereby authorized and directed to issue certificates
representing shares (or confirm purchases to investors and credit such purchases
to their accounts) of the Series P Common Shares, Series Q Common Shares, and
Series R Common Shares of the Corporation, and such shares are hereby declared
to be validly and legally issued, fully paid and nonassessable.

          IN WITNESS WHEREOF, the undersigned has signed this Certificate of
Designation on behalf of the Corporation this 13th day of April 1998.



                                /s/ Michael J. Radmer                      
                                ----------------------------------  
                                Michael J. Radmer, Secretary


                                         -2-

<PAGE>

                                 AMENDED AND RESTATED
                                        BYLAWS
                                          OF
                               FORTIS SERIES FUND, INC.
               (as amended by the Board of Directors on March 19, 1998)


                                      ARTICLE I
                               OFFICES, CORPORATE SEAL

          Section 1.01.  NAME.  The name of the corporation is "Fortis Series
Fund, Inc." The name of the series represented by the corporation's Series A
Common Shares shall be "Growth Stock Series;" the name of the series represented
by the corporation's Series B Common Shares shall be "U.S. Government
Securities Series;" the name of the series represented by the corporation's
Series C Common Shares shall be "Money Market Series;" the name of the series
represented by the corporation's Series D Common Shares shall be "Asset
Allocation Series;" the name of the series represented by the corporation's
Series E Common Shares shall be "Diversified Income Series;" the name of the
series represented by the corporation's Series F Common Shares shall be "Global
Growth Series;" the name of the series represented by the corporation's Series G
Common Shares shall be "High Yield Series;" the name of the series represented
by the corporation's Series H Common Shares shall be "Growth & Income Series;"
the name of the series represented by the corporation's Series I Common Shares
shall be the "Aggressive Growth Series;" the name of the series represented by
the corporation's Series J Common Shares shall be "International Stock Series;"
the name of the series represented by the corporation's Series K Common Shares
shall be "Global Bond Series;"and the name of the series represented by the
corporation's Series L Common Shares shall be the "Global Asset Allocation
Series;" the name of the Series represented by the corporations's Series M
Common Shares shall be "Value Series;" the name of the series represented by the
corporation's Series N Common Shares shall be S&P 500 Index Series;" the name of
the series represented by the corporation's Series O Common Shares shall be
"Blue Chip Stock Series;" the name of the series represented by the
corporation's Series P Common Shares shall be "Small Cap Value Series;" the name
of the series represented by the corporation's Series Q Common Shares shall be
"Mid Cap Stock Series;" and the name of the series represented by the
corporation's Series R Common Shares shall be "Large Cap Growth Series."

          Section 1.02.  REGISTERED OFFICE.  The registered office of the
corporation in Minnesota shall be that set forth in the Articles of
Incorporation or in the most recent amendment of the Articles of Incorporation
or resolution of the directors filed with the Secretary of State of Minnesota
changing the registered office.

          Section 1.03.  OTHER OFFICES.  The corporation may have such other
offices and places of business, within or without the State of Minnesota, as the
directors shall, from time to time, determine.


                                         -1-
<PAGE>

          Section 1.04.  CORPORATE SEAL.  The corporate seal shall be circular
in form and shall have inscribed thereon the name of the corporation and the
word "Minnesota" and the words "Corporate Seal." The form of the seal shall be
subject to alteration by the Board of Directors and the seal may be used by
causing it or a facsimile to be impressed or affixed or printed or otherwise
reproduced.  Any officer or director of the corporation shall have authority to
affix the corporate seal of the corporation to any document requiring the same.

                                     ARTICLE II
                              MEETINGS OF SHAREHOLDERS

          Section 2.01.  PLACE AND TIME OF MEETINGS.  Except as provided
otherwise by Minnesota Statutes Chapter 302A, meetings of the shareholders may
be held at any place, within or without the State of Minnesota, designated by
the directors and, in the absence of such designation, shall be held at the
registered office of the corporation in the State of Minnesota.  The directors
shall designate the time of day for each meeting and, in the absence of such
designation, every meeting of shareholders shall be held at ten o'clock a.m.

          Section 2.02.  REGULAR MEETINGS.  Annual meetings of shareholders are
not required by these Bylaws.  Regular meetings shall be held only with such
frequency and at such times and places as provided in and required by law.

          Section 2.03.  SPECIAL MEETINGS.  Special meetings of the shareholders
may be held at any time and for any purpose and may be called by the Chairman of
the Board, the President, and two or more directors, or by one or more
shareholders holding ten percent (10%) or more of the shares entitled to vote on
the matters to be presented to the meeting, except that a special meeting for
the purpose of considering any action directly or indirectly to facilitate or
effect a business combination, including any action to change or otherwise
affect the composition of the Board of Directors for that purpose, must be
called by 25% of the voting power of all shares entitled to vote.

          Section 2.04.  QUORUM; ADJOURNED MEETINGS.  The holders of ten percent
(10%) of the shares outstanding and entitled to vote at the meeting shall
constitute a quorum for the transaction of business at any regular or special
shareholders' meeting.  In case a quorum shall not be present at a meeting,
those present in person or by proxy shall adjourn to such day as they shall, by
majority vote, agree upon without further notice other than by announcement at
the meeting at which such adjournment is taken.  If a quorum is present, a
meeting may be adjourned from time to time without notice other than
announcement at the meeting.  At adjourned meetings at which a quorum is
present, any business may be transacted which might have been transacted at the
meeting as originally noticed.  If a quorum is present, the shareholders may
continue to transact business


                                         -2-
<PAGE>

until adjournment notwithstanding the withdrawal of enough shareholders to leave
less than a quorum.

          Section 2.05.  VOTING.  At each meeting of the shareholders, every
shareholder shall have the right to vote in person or by proxy.  Each
shareholder, unless the Articles of Incorporation or applicable laws provide
otherwise, shall have one vote for each share having voting power registered in
his name on the books of the corporation.  Upon the demand of any shareholder,
the vote upon any question before the meeting shall be by written ballot. 
Except as otherwise specifically provided by these Bylaws or as required by
provisions of the Investment Company Act of 1940 or other applicable laws, all
questions shall be decided by a majority vote of the number of shares entitled
to vote and represented at the meeting at the time of the vote.  If the
matter(s) to be presented at a regular or special meeting relates only to a
particular portfolio or portfolios of the corporation, then only the
shareholders of the series of stock issued by such portfolio or portfolios are
entitled to vote on such matter(s).

          Section 2.06.  VOTING - PROXIES.  The right to vote by proxy shall
exist only if the instrument authorizing such proxy to act shall have been
executed in writing by the shareholder himself or by his attorney thereunto duly
authorized in writing.  No proxy shall be voted after three years from its date
unless it provides for a longer period.

          Section 2.07.  CLOSING OF BOOKS.  The Board of Directors may fix a
time, not exceeding sixty (60) days preceding the date of any meeting of
shareholders, as a record date for the determination of the shareholders
entitled to notice of, and to vote at, such meeting, notwithstanding any
transfer of shares on the books of the corporation after any record date so
fixed.  If the Board of Directors fails to fix a record date for determination
of the shareholders entitled to notice of, and to vote at, any meeting of
shareholders, the record date shall be the thirtieth (30th) day preceding the
date of such meeting.

          Section 2.08.  NOTICE OF MEETINGS.  The Secretary or an Assistant
Secretary shall mail to each shareholder, shown by the books of the corporation
to be a holder of record of voting shares, at his address as shown by the books
of the corporation, a notice setting out the time and date and place of each
regular meeting and each special meeting, which notice shall be mailed at least
ten (10) days prior thereto; except that notice of a meeting at which an
agreement of merger or consolidation is to be considered shall be mailed to all
shareholders of record, whether entitled to vote or not, at least two (2) weeks
prior thereto; and except that notice of a meeting at which a proposal to
dispose of all, or substantially all, of the property and assets of the
corporation is to be considered shall be mailed to all shareholders of record,
whether entitled to vote or not, at least ten (10) days prior thereto; and
except that notice of a meeting at which a proposal to dissolve the


                                         -3-
<PAGE>

corporation or to amend the Articles of Incorporation is to be considered shall
be mailed to all shareholders of record, whether entitled to vote or not, at
least ten (10) days prior thereto.  Every notice of any special meeting shall
state the purpose or purposes for which the meeting has been called, pursuant to
Section 2.03, and the business transacted at all special meetings shall be
confined to the purpose stated in the call.

          Section 2.09.  WAIVER OF NOTICE.  Notice of any regular or special
meeting may be waived either before, at or after such meeting in writing signed
by each shareholder or representative thereof entitled to vote the shares so
represented.

                                    ARTICLE III
                                     DIRECTORS
                                          
          Section 3.01.  NUMBER, QUALIFICATIONS AND TERM OF OFFICE.  Until the
first meeting of shareholders, or until the directors increase their number by
resolution, the number of directors shall be the number named in the Articles of
Incorporation.  Thereafter, the number of directors shall be established by
resolution of the shareholders (subject to the authority of the Board of
Directors to increase the number of directors as permitted by law), but shall
not be less than the lesser of (i) the number of shareholders of record and
beneficially, or (ii) three (3).  In the absence of such resolution, the number
of directors shall be the number last fixed by the shareholders or the Board of
Directors, or the Articles of Incorporation.  Directors may but need not be
shareholders.  Each of the directors shall hold office until the regular meeting
of shareholders next held after his election and until his successor shall have
been elected and shall qualify, or until he shall resign, or shall have been
removed as hereinafter provided.

          Section 3.02.  ELECTION OF DIRECTORS.  Except as otherwise provided in
Section 3.11 and 3.12 hereof, the directors shall be elected at all regular
shareholders' meeting.  Directors may be elected at a special shareholders'
meeting, provided that the notice of such meeting shall contain mention of such
purpose.  At each shareholders' meeting for the election of directors, the
directors shall be elected by a plurality of the votes validly cast at such
election.  The shareholders of each series of stock of the corporation shall be
entitled to vote for directors and shall have equal voting power.

          Section 3.03.  GENERAL POWERS.

           (a) The property, affairs and business of the corporation shall be
managed by the Board of Directors, which may exercise all the powers of the
corporation except those powers vested solely in the shareholders of the
corporation by statute, the Articles of Incorporation, or these Bylaws, as
amended.


                                         -4-
<PAGE>

           (b) All acts done by any meeting of the Directors or by any person
acting as a director, so long as his successor shall not have been duly elected
or appointed, shall, notwithstanding that it be afterwards discovered that there
was some defect in the election of the directors or such person acting as
aforesaid or that they or any of them were disqualified, be as valid as if the
directors or such other person, as the case may be, had been duly elected and
were or was qualified to be directors or a director of the corporation.

          Section 3.04.  POWER TO DECLARE DIVIDENDS.

           (a) The Board of Directors, from time to time as they may deem
advisable, may declare and pay dividends in cash or other property of the
corporation, out of any source available for dividends, to the shareholders of
each series of stock of the corporation according to their respective rights and
interests in the investment portfolio of the corporation issuing such series of
stock.

           (b) The Board of Directors shall cause to be accompanied by a written
statement any dividend payment wholly or partly from any source other than

               (i)  each investment portfolio's accumulated and accrued
          undistributed net income (determined in accordance with generally
          accepted accounting practice and the rules and regulations of the
          Securities and Exchange Commission then in effect) and not including
          profits or losses realized upon the sale of securities or other
          properties; or

               (ii) each investment portfolio's net income so determined for the
          current or preceding fiscal year.

Such statement shall adequately disclose the source or sources of such payment
and the basis of calculation, and shall be in such form as the Commission may
prescribe.

           (c) Notwithstanding the above provisions of this Section 3.04, the
Board of Directors may at any time declare and distribute pro rata among the
shareholders of each series of stock a "stock dividend" out of each portfolio's
authorized but unissued shares of stock, including any shares previously
purchased by a portfolio of the corporation.

           Section 3.05.  ANNUAL MEETING.  The Board of Directors .shall meet
annually at the registered office of the corporation, or at such other place
within or without the State of Minnesota as may be designated by the Board of
Directors, for the purpose of electing the officers of the corporation and for
the transaction of such other business as shall come before the meeting.


                                         -5-
<PAGE>

          Section 3.06.  REGULAR MEETINGS.  Regular meetings of the Board of
Directors shall be held from time to time at such time and place within or
without the State of Minnesota as may be fixed by resolution adopted by a
majority of the whole Board of Directors.

          Section 3.07.  SPECIAL MEETINGS.  Special meetings of the Board of
Directors may be called by the Chairman of the Board, the President, or by any
two of the directors and shall be held from time to time at such time and place
as may be designated in the notice of such meeting.

          Section 3.08.  NOTICE OF MEETINGS.  Unless otherwise required by
Statute, no notice need be given of any annual or regular meeting of the Board
of Directors.Notice of each special meeting of the Board of Directors shall be
given by the Secretary who shall give at least twenty-four (24) hours' notice
thereof to each director by mail, telephone, telegram or in person.

          Section 3.09.  WAIVER OF NOTICE.  Notice of any meeting of the Board
of Directors may be waived either before, at, or after such meeting in writing
signed by each director.  A director, by his attendance and participation in the
action taken at any meeting of the Board of Directors, shall be deemed to have
waived notice of such meeting.

          Section 3.10.  QUORUM.  A majority of the whole Board of Directors
shall constitute a quorum for the transaction of business except that, when a
vacancy or vacancies exist, a majority of the remaining directors (provided such
majority consists of not less than the lesser of (i) the number of directors
required by Section 3.02, or (ii) two (2) directors) shall constitute a quorum.

          Section 3.11.  VACANCIES; NEWLY CREATED DIRECTORSHIPS.  Vacancies in
the Board of Directors of this corporation occurring by reason of death,
resignation or increase in the number of directors by the shareholders to the
minimum number required by Section 3.01 or by the Board pursuant to Section
3.01, shall be filled for the unexpired term by a majority of the remaining
directors of the Board although less than a quorum; newly created directorships
resulting from an increase in the authorized number of directors by action of
the Board of Directors as permitted by Section 3.01 may be filled by a
two-thirds (2/3) vote of the directors serving at the time of such increase; and
each person so elected shall be a director until his successor is elected by the
shareholders, who may make such election at their next regular meeting or at any
meeting duly called for that purpose; provided, however, that no vacancy can be
filled as provided above if prohibited by the provisions of the Investment
Company Act of 1940.


                                         -6-
<PAGE>

          Section 3.12.  REMOVAL.  Removal of directors shall be governed by the
provisions of Section 302A.233 of the Minnesota Statutes or other applicable
provisions of the Minnesota Statutes or successors thereto.

          Section 3.13.  EXECUTIVE COMMITTEE.  The Board of Directors, by
unanimous affirmative action of the entire Board, may establish an Executive
Committee consisting of two (2) or more directors.  Such Committee may meet at
stated times or on notice of all given by any of their own number.  During the
intervals between meetings of the Board of Directors, such Committee shall
advise and aid the officers of the corporation in all matters concerning the
business and affairs of the corporation and, generally, perform such duties and
exercise such powers as may be directed or delegated by the Board of Directors
from time to time.  The Board of Directors may, by unanimous affirmative action
of the entire Board, delegate to such Committee authority to exercise all the
powers of the Board of Directors, except the power to amend the Bylaws and to
take action on matters reserved to the entire Board by the Investment Company
Act of 1940, while the Board of Directors is not in session.  Vacancies in the
membership of the Committee shall be filled by the Board of Directors at a
regular meeting or at a special meeting called for that purpose.

          Section 3.14.  OTHER COMMITTEES.  The Board of Directors may establish
other committees from time to time making such regulations as it deems advisable
with respect to the membership, authority and procedures of such committees.

          Section 3.15.  WRITTEN ACTION.  Any action which might be taken at a
meeting of the Board of Directors, or any duly constituted committee thereof,
may be taken without a meeting if done in writing and signed by a majority of
the directors or committee members.

          Section 3.16.  COMPENSATION.  Directors who are not salaried officers
of this corporation shall receive such fixed sum per meeting attended or such
fixed annual sum as shall be determined, from time to time, by resolution of the
Board of Directors.  All directors may receive their expenses, if any, of
attendance at meetings of the Board of Directors or any committee thereof. 
Nothing herein contained shall be construed to preclude any director from
serving this corporation in any other capacity and receiving proper compensation
therefor.

                                     ARTICLE IV
                                      OFFICERS

          Section 4.01.  NUMBER.  The officers of the corporation shall consist
of a Chairman of the Board (if one is elected by the Board), the President, one
or more Vice Presidents (if desired by the Board), a Secretary and one or more
Assistant


                                         -7-
<PAGE>

Secretaries, a Treasurer and one or more Assistant Treasurers, and such other
officers and agents as may, from time to time, be elected by the Board of
Directors.

          Section 4.02.  ELECTION, TERM OF OFFICE AND QUALIFICATIONS.  At each
annual meeting of the Board of Directors, the Board shall elect, from within or
without their number, the President, the Secretary, the Treasurer and such other
officers as may be deemed advisable.  Such officers shall hold office until the
next annual meeting of the directors or until their successors are elected and
qualified.  The President and all other officers who may be directors shall
continue to hold office until the election and qualification of their
successors, notwithstanding an earlier termination of their directorship.

          Section 4.03.  RESIGNATION.  Any officer may resign his office at any
time by delivering a written resignation to the Board of Directors, the
President, the Secretary, or any Assistant Secretary.  Unless otherwise
specified therein, such resignation shall take effect upon delivery.

          Section 4.04.  REMOVAL AND VACANCIES.  Any officer may be removed from
his office by a majority of the whole Board of Directors, with or without cause.
Such removal, however, shall be without prejudice to the contract rights of the
person so removed.  If there be a vacancy among the officers of the corporation
by reason of death, resignation or otherwise, such vacancy shall be filled for
the unexpired term by the Board of Directors.

          Section 4.05.  CHAIRMAN OF THE BOARD.  The Chairman of the Board, if
one is elected, shall preside at all meetings of the shareholders and directors
and shall have such other duties as may be prescribed, from time to time, by the
Board of Directors.

          Section 4.06.  PRESIDENT.  The President shall have general active
management of the business of the corporation.  In the absence of the Chairman
of the Board, he shall preside at all meetings of the shareholders and
directors.  He shall be the chief executive officer of the corporation and shall
see that all orders and resolutions of the Board of Directors are carried into
effect.  He shall be ex officio a member of all standing committees.  He may
execute and deliver, in the name of the corporation, any deeds, mortgages,
bonds, contracts or other instruments pertaining to the business of the
corporation and, in general, shall perform all duties usually incident to the
office of President.  He shall have such other duties as may, from time to time,
be prescribed by the Board of Directors.

          Section 4.07.  VICE PRESIDENT.  Each Vice President shall have such
powers and shall perform such duties as may be specified in the Bylaws or
prescribed by the Board of Directors or by the President.  In the event of
absence or disability of


                                         -8-
<PAGE>

the President, Vice Presidents shall succeed to his power and duties in the
order designated by the Board of Directors.

          Section 4.08.  SECRETARY.  The Secretary shall be secretary of, and
shall attend all, meetings of the shareholders and Board of Directors and shall
record all proceedings of such meetings in the minute book of the corporation. 
He shall give proper notice of meetings of shareholders and directors.  He shall
keep the seal of the corporation and shall affix the same to any instrument
requiring it and may, when necessary, attest the seal by his signature.  He
shall perform such other duties as may, from time to time, be prescribed by the
Board of Directors or by the President.

          Section 4.09.  TREASURER.  The Treasurer shall keep accurate accounts
of all moneys of the corporation received or disbursed.  He shall deposit all
moneys, drafts and checks in the name of, and to the credit of, the corporation
in such banks and depositories as a majority of the whole Board of Directors
shall, from time to time, designate.  He shall have power to endorse, for
deposit, all notes, checks and drafts received by the corporation.  He shall
disburse the funds of the corporation, as ordered by the Board of Directors,
making proper vouchers therefor.  He shall render to the President and the
directors, whenever required, an account of all his transactions as Treasurer
and of the financial condition of the corporation, and shall perform such other
duties as may, from time to time, be prescribed by the Board of Directors or by
the President.

          Section 4.10.  ASSISTANT SECRETARIES.  At the request of the
Secretary, or in his absence or disability, any Assistant Secretary shall have
power to perform all the duties of the Secretary and, when so acting, shall have
all the powers of, and be subject to all restrictions upon, the Secretary.  The
Assistant Secretaries shall perform such other duties as from time to time may
be assigned to them by the Board of Directors or the President.

          Section 4.11.  ASSISTANT TREASURERS.  At the request of the Treasurer,
or in his absence or disability, any Assistant Treasurer shall have power to
perform all the duties of the Treasurer, and when so acting, shall have all the
powers of, and be subject to all the restrictions upon, the Treasurer.  The
Assistant Treasurers shall perform such other duties as from time to time may be
assigned to them by the Board of Directors or the President.

          Section 4.12.  COMPENSATION.  The officers of this corporation shall
receive such compensation for their services as may be determined, from time to
time, by resolution of the Board of Directors.

          Section 4.13.  SURETY BONDS.  The Board of Directors may require any
officer or agent of the corporation to execute a bond (including, without
limitation,


                                         -9-
<PAGE>

any bond required by the Investment Company Act of 1940 and the rules and
regulations of the Securities and Exchange Commission) to the corporation in
such sum and with such surety or sureties as the Board of Directors may
determine, conditioned upon the faithful performance of his duties to the
corporation, including responsibility for negligence and for the accounting of
any of the corporation's property, funds or securities that may come into his
hands.  In any such case, a new bond of like character shall be given at least
every six years, so that the date of the new bond shall not be more than six
years subsequent to the date of the bond immediately preceding.

                                     ARTICLE V
                      SHARES AND THEIR TRANSFER AND REDEMPTION
                                          
          Section 5.01.  CERTIFICATES FOR SHARES.

           (a) Every owner of shares of the corporation shall be entitled to a
certificate, to be in such form as shall be prescribed by the Board of
Directors, certifying the number of shares of the corporation owned by him.  The
certificates for such shares shall be numbered in the order in which they shall
be issued and shall be signed, in the name of the corporation, by the President
or a Vice President and by the Treasurer, or by such officers as the Board of
Directors may designate.  Such signatures may be facsimile if authorized by the
Board of Directors.  Every certificate surrendered to the corporation for
exchange or transfer shall he canceled, and no new certificate or certificates
shall be issued in exchange for any existing certificate until such existing
certificate shall have been so canceled, except in cases provided for in Section
5.08.

           (b) In case any officer, transfer agent or registrar who shall have
signed any such certificate, or whose facsimile signature has been placed
thereon, shall cease to be such an officer (because of death, resignation or
otherwise) before such certificate is issued, such certificate may be issued and
delivered by the corporation with the same effect as if he were such officer,
transfer agent or registrar at the date of issue.

           Section 5.02.  ISSUANCE OF SHARES.  The Board of Directors is
authorized to cause to be issued shares of the corporation to the full amount
authorized by the Articles of Incorporation in such series and ln such amounts
as may be determined by the Board of Directors and as may be permitted by law. 
No shares shall be allotted except in consideration of cash or of an amount
transferred from surplus to stated capital upon a share dividend.  At the time
of such allotment of shares, the Board of Directors making such allotments shall
state, by resolution, their determination of the fair value to the corporation
in monetary terms of any consideration other than cash for which shares are
allotted.  The amount of consideration to be received in cash, or otherwise,
shall not be less than the par value of the shares so allotted.  No


                                         -10-
<PAGE>

shares of stock issued by the corporation shall be issued, sold, or exchanged by
or on behalf of the corporation for any amount less than the net asset value per
share of the shares outstanding as determined pursuant to Article XI hereunder.

          Section 5.03.  REDEMPTION OF SHARES.  Upon the demand of any
shareholder this corporation shall redeem any share of stock issued by it held
and owned by such shareholder at the net asset value thereof as determined
pursuant to Article XI hereunder.  The Board of Directors may suspend the right
of redemption or postpone the date of payment during any period when: (a)
trading on the New York Stock Exchange is restricted or such Exchange is closed
for other than weekends or holidays; (b) the Securities and Exchange Commission
has by order permitted such suspension or (c) an emergency as defined by rules
of the Securities and Exchange Commission exists, making disposal of portfolio
securities or valuation of net assets of the corporation not reasonably
practicable.

          Section 5.04.  TRANSFER OF SHARES.  Transfer of shares on the books of
the corporation may be authorized only by the shareholder named in the
certificate, or the shareholder's legal representative, or the shareholder's
duly authorized attorney-in-fact, and upon surrender of the certificate or the
certificates for such shares or a duly executed assignment covering shares held
in unissued form.  The corporation may treat, as the absolute owner of shares of
the corporation, the person or persons in whose name shares are registered on
the books of the corporation.

          Section 5.05.  REGISTERED SHAREHOLDERS.  The corporation shall be
entitled to treat the holder of record of any share or shares of stock as the
holder in fact thereof and accordingly shall not be bound to recognize any
equitable or other claim to or interest in such share on the part of any other
person, whether or not it shall have express or other notice thereof, except as
otherwise expressly provided by the laws of Minnesota.

          Section 5.06.  TRANSFER AGENTS AND REGISTRARS.  The Board of Directors
may from time to time appoint or remove transfer agents and/or registrars of
transfers of shares of stock of the corporation, and it may appoint the same
person as both transfer agent and registrar.  Upon any such appointment being
made all certificates representing shares of capital stock thereafter issued
shall be countersigned by one of such transfer agents or by one of such
registrars of transfers or by both and shall not be valid unless so
countersigned.  If the same person shall be both transfer agent and registrar,
only one countersignature by such person shall be required.

          Section 5.07.  TRANSFER REGULATIONS.  The shares of stock of the
corporation may be freely transferred, and the Board of Directors may from time
to time adopt rules and regulations with reference to the method of transfer of
the shares of stock of the corporation.


                                         -11-
<PAGE>

          Section 5.08.  LOST, STOLEN, DESTROYED AND MUTILATED CERTIFICATES. 
The holder of any stock of the corporation shall immediately notify the
corporation of any loss, theft, destruction or mutilation of any certificate
therefor, and the Board of Directors may, in its discretion, cause to be issued
to him a new certificate or certificates of stock upon the surrender of the
mutilated certificate or in case of loss, theft or destruction of the
certificate, upon satisfactory proof of such loss, theft or destruction, after
the owner of the lost, stolen or destroyed certificate, or his legal
representatives, gives to the corporation and to such registrar or transfer
agent as may be authorized or required to countersign such new certificate or
certificates a bond, in such sum as they may direct, and with such surety or
sureties, as they may direct, as indemnity against any claim that may be made
against them or any of them on account of or in connection with the alleged
loss, theft, or destruction of any such certificate.

                                     ARTICLE VI
                              DIVIDENDS, SURPLUS, ETC.
                                          
          Section 6.01.  The corporation's net investment income will be
determined, and its dividends shall be declared and made payable at such time(s)
as the Board of Directors shall determine; dividends shall be payable to
shareholders of record as of the date of declaration

          It shall be the policy of the corporation to qualify for and elect the
tax treatment applicable to regulated investment companies under the Internal
Revenue Code, so that the corporation will not be subjected to Federal income
tax on such part of its income or capital gains as it distributes to
shareholders.

                                     ARTICLE VII
                        BOOKS AND RECORDS, AUDIT, FISCAL YEAR

          Section 7.01.  BOOKS AND RECORDS.  The Board of Directors of the
corporation shall cause to be kept:

          (1)  a share register, giving the names and addresses of the
               shareholders, the number and classes held by each, and the dates
               on which the certificates therefor were issued;

          (2)  records of all proceedings of shareholders and directors; and

          (3)  such other records and books of account as shall be necessary and
               appropriate to the conduct of the corporate business.


                                         -12-
<PAGE>

          Section 7.02.  DOCUMENTS KEPT AT REGISTERED OFFICE.  The Board of
Directors shall cause to be kept at the registered office of the corporation
originals or copies of:

          (1)  records of all proceedings of shareholders and directors

          (2)  Bylaws of the corporation and all amendments thereto; and

          (3)  reports made to any or all of the shareholders within the last
               preceding three (3) years.

          Section 7.03.  AUDIT, ACCOUNTANT.

           (a) The Board of Directors shall cause the records and books of
account of the corporation to be audited at least once in each fiscal year and
at such other times as it may deem necessary or appropriate.

           (b) The corporation shall employ an independent certified public
accountant or firm of independent certified public accountants as its Accountant
to examine the accounts of the corporation and to sign and certify financial
statements filed by the corporation.  The Accountant's certificates and reports
shall be addressed both to the Board of Directors and to the shareholders.

           (c) Any vacancy occurring between regular meetings, due to the death,
resignation or otherwise of the Accountant, may be filled by the Board of
Directors.

          Section 7.04.  FISCAL YEAR.  The fiscal year of the corporation shall
be determined by the Board of Directors.

                                     ARTICLE VIII
                                 INSPECTION OF BOOKS

          Section 8.01.  Every shareholder of the corporation and every holder
of a voting trust certificate shall have a right to examine, in person or by
agent or attorney, at any reasonable time or times, for any proper purpose, and
at the place or places where usually kept, the share register, books of account
and records of the proceedings of the shareholders and directors and to make
extracts therefrom.

                                      ARTICLE IX
                                 VOTING OF STOCK HELD

          Section 9.01.  Unless otherwise provided by resolution of the Board of
Directors, the President, any Vice President, the Secretary or the Treasurer,
may


                                         -13-
<PAGE>

from time to time appoint an attorney or attorneys or agent or agents of the
corporation, in the name and on behalf of the corporation, to cast the votes
which the corporation may be entitled to cast as a stockholder or otherwise in
any other corporation or association, any of whose stock or securities may be
held by the corporation, at meetings of the holders of the stock or other
securities of any such other corporation or association, or to consent in
writing to any action by any such other corporation or association, and may
instruct the person or persons so appointed as to the manner of casting such
votes or giving such consent, and may execute or cause to be executed on behalf
of the corporation and under its corporate seal, or otherwise, such written
proxies, consents, waivers, or other instruments as it may deem necessary or
proper in the circumstances; or any of such officers may themselves attend any
meeting of the holders of stock or other securities of any such corporation or
association and thereat vote or exercise any or all other powers of the
corporation as the holder of such stock or other securities of such other
corporation or association, or consent in writing to any action by any such
other corporation or association.

                                      ARTICLE X
                             VALUATION OF NET ASSET VALUE

          Section 10.01.  The net asset value per share of each series of stock
issued by the portfolios of the corporation shall be determined in good faith by
or under supervision of the officers of the corporation as authorized by the
Board of Directors as often and on such days and at such time(s) as the Board of
Directors shall determine.

                                      ARTICLE XI
                                  CUSTODY OF ASSETS

          Section 11.01.  All securities and cash owned by this corporation
shall, as hereinafter provided, be held by or deposited with a bank or trust
company having (according to its last published report) not less than two
million dollars ($2,000,000) aggregate capital, surplus and undivided profits
(the "Custodian").

          This corporation shall enter into a written contract with the
Custodian regarding the powers, duties and compensation of the Custodian with
respect to the cash and securities of this corporation held by the Custodian. 
Said contract and all amendments thereto shall be approved by the Board of
Directors of this corporation.  In the event of the Custodian's resignation or
termination, the corporation shall use its best efforts promptly to obtain a
successor Custodian and shall require that the cash and securities owned by this
corporation held by the Custodian be delivered directly to such successor
Custodian.


                                         -14-
<PAGE>

                                     ARTICLE XII
                                      AMENDMENTS

          Section 12.01.  These Bylaws may be amended or altered by a vote of
the majority of the whole Board of Directors at any meeting provided that notice
of such proposed amendment shall have been given in the notice given to the
directors of such meeting.  Such authority in the Board of Directors is subject
to the power of the shareholders to change or repeal such Bylaws by a majority
vote of the shareholders present or represented at any annual or special meeting
of shareholders called for such purpose.  The Board of Directors shall not make
or alter any Bylaws fixing their qualifications, classifications, term of
office, or number, except that the Board of Directors may make or alter any
Bylaw to increase their number.

                                     ARTICLE XIII
                                    MISCELLANEOUS

          Section 13.01.  INTERPRETATION.  When the context in which words are
used in these Bylaws indicates that such is the intent, singular words will
include the plural and vice versa, and masculine words will include the feminine
and neuter genders and vice versa.

          Section 13.02.  ARTICLE AND SECTION TITLES.  The titles of Sections
and Articles in these Bylaws are for descriptive purposes only and will not
control or alter the meaning of any of these Bylaws as set forth in the text.


                                         -15-

<PAGE>

                     INVESTMENT ADVISORY AND MANAGEMENT AGREEMENT


          THIS AGREEMENT, made this 2nd day of April 1998, by and between Fortis
Series Fund, Inc., a Minnesota corporation (the "Fund") and Fortis Advisers,
Inc., a Minnesota corporation ("Advisers").

          1.   INVESTMENT ADVISORY AND MANAGEMENT SERVICES.  The Fund hereby
engages Advisers, and Advisers hereby agrees to act, as investment adviser for,
and to manage the affairs, business and the investment of the assets of the
Small Cap Value Series, the Mid Cap Stock Series, and the Large Cap Growth
Series of the Fund.  Each such Series is herein individually referred to as a
"Series," and the Series are herein collectively referred to as the "Series."

          The investment of the assets of the Series shall at all times be
subject to the applicable provisions of the Articles of Incorporation and Bylaws
of the Fund and the current Registration Statement (including the Prospectus and
Statement of Additional Information) of the Series and shall conform to the
policies and restrictions of the Series as set forth in such Registration
Statement and any additional limitations as may be adopted from time to time by
the Board of Directors of the Fund and communicated to Advisers.  Within the
framework of the investment policies, restrictions, and limitations of the
Series, Advisers shall have the sole and exclusive responsibility for the
management of the Series and the making and execution of all investment
decisions for the Series, provided:
     
     Advisers may, at is option and expense, with respect to each of the Series,
     appoint a sub-adviser which shall assume such responsibilities and
     obligations of Advisers pursuant to this Investment Advisory and Management
     Agreement as shall be delegated to the sub-adviser; provided, however, that
     any discretionary investment decisions made by a sub-adviser on behalf of
     any of the Series shall be subject to approval or ratification by Advisers,
     and, not withstanding any


                                         -1-
<PAGE>

     delegation of responsibilities and obligations to the sub-adviser, Advisers
     shall retain the right, in its discretion, to make investment decisions for
     the Series.  Any appointment of a sub-adviser and assumption of
     responsibilities and obligations of Advisers by such sub-adviser shall be
     subject to approval by the Board of Directors of the Fund and, to the
     extent (if any) required by law, by the shareholders of the Series.  Any
     appointment of a sub-adviser for the Series pursuant hereto shall in no way
     limit or diminish Advisers' obligations and responsibilities under this
     Investment Advisory and Management Agreement, and Advisers shall be
     responsible for monitoring compliance by the sub-adviser(s) with the
     investment policies, restrictions, and limitations of the Series, and will
     also be responsible for ensuring that the Series are managed in a way so
     that:  (1) they meet the requirements of Subchapter M of the Internal
     Revenue Code to be taxed as a regulated investment company; and (2) they
     comply with the provisions of Section 817(h) of the Internal Revenue Code,
     and the regulations promulgated thereunder.

Advisers shall report to the Board of Directors regularly at such times and in
such detail as the Board may from time to time determine to be appropriate, in
order to permit the Board to determine the adherence by each Series to the 
investment policies, restrictions and limitations of such Series.

          Advisers shall, at its own expense, furnish the Fund suitable office
space, and all necessary office facilities, equipment and personnel for
servicing the investments of the Fund.  Advisers shall arrange, if required by
the Fund, for officers, employees or other affiliates of Advisers to serve
without compensation from the Fund as directors, officers, or employees of the
Fund if duly elected to such positions by the shareholders or directors of the
Fund.

          Advisers shall create and maintain all reports, books and records
relating to its activities and obligations under this Agreement in such a manner
as will meet the obligations of the Fund under the Investment Company Act of
1940, applicable federal and state tax and insurance laws and regulations and
any other


                                         -2-
<PAGE>

law or regulation which may be or become applicable to the Fund.  All such
reports, books and records shall be the property of the Fund.  Furthermore, such
reports, books and records shall at all reasonable times be available for
copying and otherwise open to inspection and audit by the Securities and
Exchange Commission, banking and insurance regulators and other authorities and
regulators having authority over the Fund, and by officers and employees of, and
auditors employed by, the Fund.  Advisers hereby further agrees that, upon the
termination of this Agreement, all reports, books and records pertaining to
Adviser's activities under this Agreement shall be promptly segregated and
returned to the Fund free from any claim or retention of rights by Advisers.

          2.   COMPENSATION FOR SERVICES.  In payment for all services,
facilities, equipment and personnel, and for other costs of Advisers hereunder,
the fund shall pay to advisers a monthly fee for each Series, which fee shall be
paid to Advisers not later than the fifth business day of the month following
the month in which such services are rendered.  Each such monthly fee shall be
at the rate or rates set forth below and shall be based on the average of the
net asset values of all of the issued and outstanding shares of the respective
Series as determined as of the close of each business day of the month pursuant
to the Article of Incorporation, Bylaws and currently effective Prospectus and
Statement of Additional Information of the Series.  The following table sets
forth the fees on a monthly and annual basis:


                                         -3-
<PAGE>


<TABLE>
<CAPTION>
                                                  Equivalent
                                 Monthly           Annual                       Average Asset
                                  Rate              Rate                     Values of the Series
                              ------------        ----------          ----------------------------------
<S>                           <C>                 <C>                 <C>
Small Cap Value Series        1/12 of .90%          .90%              On the first $50,000,000
                              1/12 of .85%          .85%              On average assets over $50,000,000

Mid Cap Stock Series          1/12 of .90%          .90%              On the first $100,000,000
                              1/12 of .85%          .85%              On the next $150,000,000
                              1/12 of .80%          .80%              On average assets over $250,000,000

Large Cap Growth Series       1/12 of .90%          .90%              On the first $100,000,000
                              1/12 of .85%          .85%              On the next $100,000,000
                              1/12 of .80%          .80%              On average assets over $200,000,000
</TABLE>

          The fees shall be prorated for any fraction of a month at the
commencement or termination of this Agreement.

          3.   ALLOCATION OF EXPENSES.

          (a)  In addition to the fees described in Section 2 hereof, the Fund
shall pay all its expenses which are not assumed by Advisers, Fortis investors,
Inc. ("Investors") or any other person.  These Fund expenses include, by way of
example, but not by way of limitation, the fees and expenses of directors and
officers of the Fund who are not "affiliated persons" of Advisers, interest
expenses, taxes, brokerage fees and commissions, fees and expenses of
registering and qualifying the Fund and its shares for distribution under
federal and state securities laws, expenses of preparing Prospectuses and of
printing and distributing Prospectuses and Statements of Additional Information
annually to existing shareholders and existing insurance contract owners,
custodian charges, auditing and legal expenses, insurance expenses, association
membership dues, and the expense of reports to shareholders, shareholders'
meetings, and proxy solicitations.  Advisers shall bear the costs of acting as
the Fund's transfer agent, registrar, and dividend disbursing agent.


                                         -4-
<PAGE>

          (b)  Advisers (or Investors or Fortis Benefits Insurance Company or
First Fortis Life Insurance Company) shall bear all promotional expenses in
connection with the distribution of the Fund's shares, including paying for
prospectuses and shareholder reports for new shareholders and new insurance
contract owners, and the costs of sales literature.

          4.   LIMIT ON EXPENSES.  Out of its advisory fee, but not in excess
thereof, Advisers shall reimburse the Fund for each Series' expenses from the
date of the initial public offering until the date a Series' aggregate net
assets first reach $10,000,000, to the extent that the aggregate expenses of the
Series (including the investment advisory and management fees for such Series
under paragraph 2 of this Agreement, but excluding interest, taxes, brokerage
fees and commissions) exceed an amount equal, on an annual basis, to the
following percentage of the average daily net assets of the Series:

          Small Cap Value Series   1.25%
          Mid Cap Stock Series     1.25%
          Large Cap Growth Series  1.25%

          5.   FREEDOM TO DEAL WITH THIRD PARTIES.  Advisers shall be free to
render services to others similar to those rendered under this Agreement or of a
different nature except as such services may conflict with the services to be
rendered or the duties to be assumed hereunder.

          6.   EFFECTIVE DATE, DURATION AND TERMINATION OF AGREEMENT.  This
Agreement shall be effective as to each Series on May 1, 1998.  Wherever
referred to in this Agreement, the vote or approval of the holders of a majority
of the outstanding voting securities of a Series or of the Fund shall mean


                                         -5-
<PAGE>

the vote of 65% or more of such securities if the holders of more than 50% of
such securities are present in person or by proxy or the vote of more than 50%
of such securities, whichever is less.

          Unless sooner terminated as hereinafter provided, this Agreement shall
continue in effect only so long as such continuance is specifically approved at
least annually (a) by the Board of Directors of the Fund, or, with respect to
particular Series, by the vote of the holders of a majority of the outstanding
voting securities of such Series, and (b) by a majority of the directors who are
not interested persons of Advisers or of the Fund cast in person at a meeting
called for the purpose of voting on such approval; provided that, if a majority
of the outstanding voting securities of any of the Series approves this
Agreement, this Agreement shall continue in effect with respect to such
approving Series whether or not the shareholders of any other Series of the Fund
approve this Agreement.

          This Agreement may be terminated at any time without the payment of
any penalty by the vote of the Board of Directors of the fund, or by Advisers,
upon sixty (60) days' written notice to the other party.  This Agreement may be
terminated with respect to a particular Series at any time without the payment
of any penalty by the vote of the holders of a majority of the outstanding
voting securities of such Series, upon sixty (60) days' written notice to
Advisers.  Any termination may be made effective with respect to both the
investment advisory and management services provided for in this Agreement or
with respect to either of such kinds of services.  This Agreement shall
automatically terminate in the event of its assignment.


                                         -6-
<PAGE>

          7.   AMENDMENTS TO AGREEMENT.  No material amendment to this Agreement
shall be effective until approved by vote of the holders of majority of the
outstanding voting securities of the Series which have approved and are subject
to this Agreement.  In addition, if a majority of the outstanding voting
securities of any Series of the Fund votes to amend this Agreement, such
amendment shall be effective with respect to such Series whether or not the
shareholders of any other Series vote to adopt such amendment.

          8.   NOTICES.  Any notice under this Agreement shall be in writing,
addressed, delivered or mailed, postage prepaid, to the other party at such
address as such other party may designate in writing for receipt of such notice.

          IN WITNESS WHEREOF, the Fund and Advisers have caused this Agreement
to be executed by their duly authorized officers as of the day and year first
above written.
     

                                   FORTIS SERIES FUND, INC.


                                   By:  /s/ Dean C. Kopperud              
                                        ----------------------------
                                        Dean C. Kopperud
                                        President



                                   FORTIS ADVISERS, INC.


                                   By:  /s/ Dean C. Kopperud              
                                        ----------------------------
                                        Dean C. Kopperud
                                        Chief Executive Officer


                                         -7-

<PAGE>

                          INVESTMENT SUB-ADVISORY AGREEMENT


     Agreement dated April 3, 1998 by and between Fortis Advisers, Inc., a
Minnesota Corporation (the "Manager") and The Dreyfus Corporation,  a
corporation organized under the laws of New York (the "Sub-Adviser") whose
principal office is located at 200 Park Avenue, New York, NY 10166.
          
     WHEREAS, the Manager serves as the investment adviser, manager, registrar,
transfer agent and dividend disbursing agent for Fortis Series Fund, Inc. (the
"Company"), an open-end, management investment company registered with the
Securities and Exchange Commission ("SEC") pursuant to the Investment Company
Act of 1940, as amended ("1940 Act"), that is comprised of a number of separate
series of investments that act as funding vehicles for various variable annuity
contracts and variable universal life insurance policies issued by Fortis
Benefits Insurance Company ("FBIC") and/or First Fortis Life Insurance Company
("First Fortis");

     WHEREAS, the Manager desires to retain the Sub-Adviser to assist the
Manager in furnishing an investment program to one series of the Company, the
Mid Cap Stock Series (the "Portfolio");

     NOW, THEREFORE, in consideration of the mutual agreements herein made, the
Manager and the Sub-Adviser agree as follows:

     1.   APPOINTMENT AND EXPENSES OF THE SUB-ADVISER.  The Manager hereby
appoints the Sub-Adviser to serve as sub-adviser with respect to the assets of
the Portfolio and to perform the services hereinafter set forth and the
Sub-Adviser hereby accepts such appointment.  The Sub-Adviser agrees, for the
compensation herein provided, to assume all obligations herein provided and bear
all its personnel and other expenses associated with the performance of its
services hereunder.  The Company shall be responsible for the Portfolio's
administrative and other direct expenses, including, but not limited to: 
(a) fees pursuant to any plan of distribution that the Portfolio may adopt;
(b) the Portfolio's brokerage and commission expenses, including all ordinary
and reasonable transaction costs; (c) fees and expenses of pricing services used
by the Company to determine the value of the Portfolio's holdings; (d) Federal,
state, local and foreign taxes, including issue and transfer taxes incurred by
or levied on the Portfolio; (e) interest charges on any Portfolio borrowings;
(f) the Company's organizational and offering expenses; (g) the cost of the
Company's personnel providing services to the Company; (h) fees and expenses of
registering the Company's shares under the appropriate Federal securities laws
and of qualifying the Company's shares under applicable state securities laws
and pursuant to any foreign laws; (i) expenses of printing and distributing
reports to the Company's shareholders, proxy materials, prospectuses and
distribution of dividends; (j) costs of the Company's shareholders' meetings and
proxy solicitation; (k) charges and expenses of the Company's custodian and
registrar, transfer agent and dividend disbursing agent; (l) compensation of the
Company's officers, directors and employees that are not "affiliated persons" or


<PAGE>

"interested persons" [as defined in Section 2(a) of the 1940 Act and the 
rules, regulations and releases relating thereto] of the Sub-Adviser; (m) the
Company's legal and auditing expenses; (n) cost of certificates representing 
shares of the Portfolio; (o) the Company's costs of stationery and supplies;
(p) the Company's insurance expenses; (q) the Company's association membership
dues; (r) travel expenses of officers and employees of the Sub-Adviser to the
extent such expenses relate to the attendance of such persons at meetings at
the request of the Board of Directors of the Company (except that a 
representative of the Sub-Adviser will attend one Board meeting per year, 
at the Sub-Adviser's own expense); and (s) travel expenses for attendance at
Board of Directors meetings by members of the Board of Directors of the 
Company who are not "interested persons" or "affiliated persons" of the 
Sub-Adviser.  The Sub-Adviser shall for all purposes herein be deemed to be
an independent contractor and shall, except as expressly provided or 
authorized (whether herein or otherwise), have no authority to act for or on
behalf of the Company in any way or otherwise be deemed an agent of the 
Company.

     2.   DUTIES OF THE SUB-ADVISER.  The Sub-Adviser will deal in good faith
and with due diligence and will use professional skill, care and judgment in the
performance of its duties under this Agreement.  In so doing, the Sub-Adviser
shall formulate and implement a continuing program for the management of the
assets of the Portfolio.  The Sub-Adviser shall amend and update such program
from time to time as financial and other economic conditions warrant.  The
Sub-Adviser shall make all determinations with respect to the investment of the
assets of the Portfolio and shall take such steps as may be necessary to
implement the same, including the placement of purchase and sale orders on
behalf of the Portfolio.  The Manager shall be responsible for the
administration of the investment activities of the Company and the Portfolio,
including compliance with the requirements of the 1940 Act, the Internal Revenue
Code of 1986, as amended, and all other applicable federal and state laws and
regulations, except for the investment management activities specifically
delegated to the Sub-Adviser pursuant to this Agreement.

     3.   POWERS OF THE SUB-ADVISER.

          3.1  The Sub-Adviser's power to direct the investment and reinvestment
of the assets of the Portfolio shall be exercised in accordance with applicable
law, the Company's Articles of Incorporation and the investment objectives,
policies and restrictions set forth in the then-current Prospectus and Statement
of Additional Information (collectively the "Prospectus") relating to the
Portfolio contained in the Company's Registration Statement under the 1940 Act
and the Securities Act of 1933, as amended.  The Company and/or the Manager may
also place additional limitations on the Sub-Adviser's investment decisions by
written notice to the Sub-Adviser.  The Company agrees to provide promptly to
the Sub-Adviser a copy of the documents mentioned above and all changes made to
such documents.  The Sub-Adviser shall not be bound by any changes to the
Company's Articles of Incorporation or the Prospectus relating to the Portfolio
until the Sub-Adviser has received actual written notice of any such change.


                                         -2-
<PAGE>

          3.2  While the Sub-Adviser will have day-to-day responsibility for the
discretionary investment decisions to be made on behalf of the Portfolio, the
Sub-Adviser will be subject to oversight by the Manager.  Such oversight,
however, shall not require prior approval of discretionary investment decisions
made by the Sub-Adviser except as may be required by applicable law, the
Portfolio's investment policies and restrictions and/or any limitations imposed
on the Sub-Adviser by the Company and/or the Manager pursuant to the preceding
paragraph.  The Manager shall retain the right to instruct the Sub-Adviser to
effect any transactions necessary to ensure compliance with the Portfolio's
investment policies and restrictions as well as the requirements of Subchapter M
of the Internal Revenue Code and the provisions of Section 817(h) of the
Internal Revenue Code and the regulations promulgated thereunder.

          3.3  In the event the Sub-Adviser's compliance with any amendment of
the Portfolio's investment objectives, policies and restrictions or other
limitations placed on the Sub-Adviser's investment decisions with respect to the
Portfolio would interfere with the completion of any transaction commenced on
behalf of the Portfolio prior to the Sub-Adviser's knowledge of such amendment,
the Sub-Adviser may complete such transaction unless doing so would violate any
applicable law, rule or regulation.   In such an event, the Sub-Adviser will not
be responsible for any loss that may result from the completion of the
transaction.

          3.4  Further, and except as may be qualified elsewhere in this
Agreement, the Sub-Adviser is hereby authorized, for and on behalf of the
Company, with respect to the Portfolio, in its discretion to:

               (a)  exercise any conversion and/or subscription rights available
     in connection with any securities or other investments held in the
     Portfolio;

               (b)  maintain all or part of the Portfolio's assets uninvested in
     short-term income-producing instruments for such periods of time as shall
     be deemed reasonable and prudent by the Sub-Adviser;

               (c)  instruct the Custodian, in accordance with the Custodian
     Agreement,  to deliver for cash received, securities or other cash and/or
     securities instruments sold, exchanged, redeemed or otherwise disposed of
     from the Portfolio, and to pay cash for securities or other cash and/or
     securities instruments delivered to the Custodian and/or credited to the
     Portfolio upon acquisition of the same for the Portfolio;

               (d)  determine how to vote all proxies received with respect to
     securities held in the Portfolio and direct the Custodian as to the voting
     of such proxies; and


                                         -3-
<PAGE>

               (e)  generally, perform any other act necessary to enable the
     Sub-Adviser to carry out its obligations under this Agreement.   

     4.   SELECTION OF BROKER-DEALERS.  The Sub-Adviser shall select the brokers
and dealers through whom transactions on behalf of the Portfolio will be
executed and the markets on or in which such transactions will be executed and
shall place, in the name of the Portfolio or its nominee (or appropriate foreign
equivalent), all such orders.  In selecting brokers and dealers to execute such
transactions, and in negotiating brokerage commissions, and in obtaining
research, statistical and other information from brokers and dealers in
connection with Portfolio transactions, the Sub-Adviser shall comply with the
description of the process contained in the Prospectus.

          4.1  It is understood that certain other clients (including other
funds, portfolios and accounts) of the Sub-Adviser may have investment
objectives and policies similar to those of the Portfolio and that the
Sub-Adviser may, from time to time, make recommendations that result in the
purchase (or sale) of a particular security by its other clients and the
Portfolio during the same period of time.  If transactions on behalf of more
than one client during the same period increase the demand for securities being
purchased or the supply of securities being sold, there may be an adverse effect
on price or quantity.  In such event, the Sub-Adviser shall allocate the
securities or investments to be purchased or sold, as well as the expenses
incurred in the transactions (including price) in a manner the Sub-Adviser
considers equitable and consistent with its obligations to the Portfolio and the
Sub-Adviser's other clients.

          4.2  The Sub-Adviser agrees that it will only enter into transactions
that are covered by Section 10(f) or Section 17(e) of the 1940 Act if it has
(i) complied with Rule 10f-3 or Rule 17e-1 thereunder, respectively, or the
terms of an appropriate exemptive order issued to the Company by the SEC, and
(ii) has complied with the procedures adopted thereunder by the Board of
Directors of the Company which may, pursuant to authority granted by the
Company, be supplemented by interpretive guidelines of the Manager.  Aside from
parties that are known or should be known by the Sub-Adviser, the Manager shall
promptly notify the Sub-Adviser of any additional parties with whom engaging in
a transaction for the Portfolio would result in a violation of the 1940 Act.

     5.   REPORTS AND INFORMATION TO BE PROVIDED BY THE SUB-ADVISER.  The
Sub-Adviser shall furnish such information and reports relating to the
Portfolio, its holdings and transactions involving Portfolio securities as the
Manager and/or the Company may reasonably require to fulfill its or their legal
responsibilities or to meet regulatory requirements or discharge other duties
they may have.  Among the subjects of the reports and information to be provided
by the Sub-Adviser are the following:


                                         -4-
<PAGE>

          (a)  Information reasonably required by the Manager to determine the
     Company's and Portfolio's compliance with the 1940 Act, the Advisers Act,
     the Internal Revenue Code, applicable federal and state securities and
     insurance laws and other applicable laws and regulations or regulatory and
     taxing authorities in the United States and other relevant countries;

          (b)  Information reasonably required by the Manager to meet the
     accounting and operational requirements of the Portfolio.  Specific
     examples of the types of reports and information that will be needed by the
     Manager and the Company are set forth in Exhibit A, attached hereto;

          (c)  Information reasonably required by the Manager to satisfy its
     reporting obligations to the Company arising from the Investment Advisory
     and Management Agreement between the Manager and the Company;

          (d)  Information reasonably requested by the Manager to determine the
     Portfolio's compliance with Rule 17f-5 under the 1940 Act, relating to
     foreign custodians and sub-custodians;

          (e)  Information reasonably required by the Manager to determine the
     Sub-Adviser's compliance with Rule 17j-1 under the 1940 Act with respect to
     the Sub-Adviser's activities on behalf of the Portfolio;

          (f)  Information reasonably required by the Manager to determine
     compliance with Rule 10f-3 and Rule 17e-1 under the 1940 Act with respect
     to the Sub-Adviser's (or its affiliates') activities on behalf of the
     Portfolio; and

          (g)  Information reasonably necessary to respond to specific inquiries
     from the Company's management and/or Board of Directors.    

     6.   NON-EXCLUSIVE SERVICES, CONFLICTS OF INTEREST AND MATERIAL NONPUBLIC
INFORMATION.  The Manager understands that the Sub-Adviser and its affiliates
may furnish investment management and advisory services to others, and that the
Sub-Adviser and its affiliates shall be at all times free, in their discretion,
to make recommendations to, and investments for, others which may or may not
correspond to investments made for the Portfolio.  The Manager further
understands that the Sub-Adviser, its affiliates, and any officer, director,
stockholder, employee or any member of their families may or may not have an
interest in the securities whose purchase and sale the Sub-Adviser effects for
the Portfolio.  Actions taken by the Sub-Adviser on behalf of the Portfolio may
be the same as, or different from, actions taken by the Sub-Adviser on its own
behalf or for others or from actions taken by the Sub-Adviser's affiliates,
officers, directors, partners, employees of the Sub-Adviser or its affiliates,
or the family members of such persons or other investors.  The Sub-Adviser
represents that it has in effect a code of ethics that complies with Rule 17j-1
under the 1940 Act and has procedures in place that, taken together, provide
reasonable enforcement of the code's  provisions.  Similarly, the


                                         -5-
<PAGE>

Sub-Adviser represents that, with respect to the use of nonmaterial nonpublic
information, it has complied, and will continue to comply, with Section 204A of
the Investment Advisers Act of 1940, as amended ("Advisers Act") and any rules
thereunder.

     7.   DISCLOSURE OF INFORMATION AND CONFIDENTIALITY.

          7.1  The Sub-Adviser, the Company and the Manager, either during or
after the termination of this Agreement, are authorized with respect to matters
arising out of this Agreement to make any disclosures and/or participate in any
conduct required by any applicable law, rule, regulation, self-regulating
organization, investment exchange or any other body having regulatory or
enforcement responsibility with respect to any investment business conducted by
the Sub-Adviser on behalf of the Portfolio.

          7.2  Subject to the preceding paragraph, the Sub-Adviser agrees that
all information which has or will come into its possession or knowledge
concerning the Portfolio or its investments in connection with this Agreement
shall be held by the Sub-Adviser in confidence.  The Sub-Adviser shall make no
use of such information other than for the performance of this Agreement, shall
disclose such information only to the directors, officers or employees of the
Sub-Adviser or its affiliated firms or of any third party appointed pursuant to
this Agreement requiring such information and shall not disclose such
information to any other person without the written consent of the Company;
provided, however, that to the extent the investments for the Portfolio are
similar to investments for other clients of the Sub-Adviser, the Sub-Adviser may
disclose such investments without direct reference to the Portfolio.  The
Sub-Adviser may also include the name of the Portfolio in a representative
client list.

          7.3  Subject to the preceding paragraph, the Company and the Manager
agree that all information which has or will come into their possession or
knowledge concerning the operations and procedures of the Sub-Adviser shall be
held by the Company and the Manager in confidence.  The Company and the Manager
shall make no use of such information other than for the performance of this
Agreement, shall disclose such information only to their directors, officers or
employees or those of its affiliated firms and shall not disclose such
information to any other person without the written consent of the Sub-Adviser.

          7.4  The Manager and the Company agree not to refer to the Sub-Adviser
or its affiliates in any advertisement or other document without prior consent
of the Sub-Adviser.  Similarly, the Sub-Adviser and its affiliates shall not
refer to the Manager, the Company, the Portfolio, or other Fortis affiliates in
any advertisement or other document without the Manager's prior consent. 
However, the Parties to this Agreement agree that they may reference one another
as necessary in regulatory and other legal filings.  Further, the parties agree
that they will not


                                         -6-
<PAGE>

unreasonably withhold permission to use their names or otherwise reference them
in materials used to describe the Portfolio and/or the Company.  

     8.   DEALINGS WITH THE CUSTODIAN.  The Manager shall notify the Sub-Adviser
of the appointment of the custodian(s) ("Custodian") for all or any portion of
the Portfolio's assets, shall provide the Sub-Adviser with a true and complete
copy of each agreement with the Custodian that deals with the Portfolio's assets
("Custodian Agreements"), and shall provide the Sub-Adviser with the names of
persons authorized to act on behalf of the Custodian and such other information
as the Sub-Adviser shall reasonably require.  The Sub-Adviser agrees to give
instructions in accordance with the terms of the applicable Custodian
Agreements.  The Company agrees to provide promptly to the Sub-Adviser a copy of
all relevant Custodian Agreements, and all changes made to such documents.

     9.   DELEGATION OF THE SUB-ADVISER'S RESPONSIBILITIES.  The Sub-Adviser may
not delegate its investment advisory responsibilities as Sub-Adviser to the
Portfolio.  However, the Sub-Adviser may employ, retain or otherwise avail
itself of the services and facilities of persons and entities within its own
organization or any other organization for the purpose of providing the
Sub-Adviser, the Manager or the Portfolio with such information, advice or
assistance, including but not limited to advice regarding economic factors and
trends and advice as to transactions in specific securities, as the Sub-Adviser
may deem necessary, appropriate or convenient for the discharge of its
obligations hereunder or as may otherwise be helpful to the Manager or the
Portfolio, or in the discharge of the Sub-Adviser's overall responsibilities
with respect to the other accounts for which it serves as investment manager or
investment adviser.  The Sub-Adviser's  acquisition of information, advice or
assistance pursuant to this paragraph shall be at the Sub-Adviser's own expense
and shall not relieve the Sub-Adviser of any of its obligations under this
Agreement.

     10.  COMPENSATION.  For the services to be rendered under this Agreement
and the facilities to be furnished, the Manager shall pay to the Sub-Adviser for
each fiscal year of the Company, a monthly management fee at the annual rate of
 .50 of 1% of the Portfolio's first $100 million of average daily net assets; .45
of 1% of the Portfolio's next $150 million of average daily net assets; and .40
of 1% of the Portfolio's average daily net assets in excess of $250 million. 
The monthly management fee shall be paid to the Sub-Adviser not later than the
tenth business day of the month following the month in which such services were
rendered and shall be based upon the average net asset values of all the issued
and outstanding shares of the Portfolio as determined as of the close of each
business day of the month pursuant to the Articles of Incorporation, Bylaws and
currently effective Prospectus of the Portfolio.  Payments of the monthly
management fee will be accompanied by documentation that verifies the
calculation of such fee.  If the management of the Portfolio by the Sub-Adviser
commences or terminates at any time other than the beginning or end of a month,
the management fee shall be prorated for that portion of such month during which
this Agreement was in force.


                                         -7-
<PAGE>

     11.  REPRESENTATIONS OF THE SUB-ADVISER.  The Sub-Adviser represents and
agrees that:

          (a)  The Sub-Adviser is registered as an "investment adviser" under
     the Advisers Act and is currently in compliance in all material respects
     and shall at all times continue to comply in all material respects with the
     requirements imposed upon it by the Advisers Act, the 1940 Act, the
     Internal Revenue Code, state securities laws and all applicable rules and
     regulations thereunder as they relate to the services provided under this
     Agreement.  The Sub-Adviser will immediately notify the Manager if it
     becomes aware of the occurrence of any event that would disqualify the
     Sub-Adviser from serving as an investment adviser of an investment company
     pursuant to Section 9 of the 1940 Act or any other applicable law or
     regulation.

          (b)  The Sub-Adviser will maintain, keep current and accurate, and
     preserve all records with respect to the Portfolio as are required of it
     under the Advisers Act and the 1940 Act, in the manner provided by such
     Acts and the rules thereunder.  The Sub-Adviser agrees that such records
     are the property of the Company, and following termination of this
     Agreement will be surrendered to the Company promptly upon request except
     to the extent that they are required to be retained by the Sub-Adviser
     under applicable law.  Further, such records shall be open to inspection by
     the Company.  The Sub-Adviser will also assure that the Company will have
     the same access as the Sub-Adviser has to records relating to the Portfolio
     that are held by relevant third parties.  Such inspections will be at
     reasonable times during business hours and only upon reasonable notice of
     the Company's desire to make an inspection.

          (c)  The Sub-Adviser agrees to advise the Manager of any developments,
     such as the reassignment of a portfolio manager, that would require
     Prospectus disclosure and to provide any necessary information related to
     such developments.

          (d)  The Sub-Adviser has provided the Manager and the Company with a
     copy of its most recent and complete Form ADV and will promptly furnish
     them with copies of any material amendments to the Form.         

          (e)  If the Sub-Adviser's performance of its obligations under this
     Agreement takes place in the United Kingdom, the Sub-Adviser shall be and
     shall remain during the effectiveness of this Agreement, a member of the
     Investment Management Regulatory Organization, Ltd. ("IMRO") and thereby
     regulated in the conduct of Investment Business (as defined in IMRO's
     rules) by the IMRO.  The Company and the Manager will be treated as a
     Non-Private Customer (as defined in IMRO's rules) of the Sub-Adviser.


                                         -8-
<PAGE>

          (f)  The Sub-Adviser shall furnish the Manager with a certificate,
     signed by a duly authorized officer of the Sub-Adviser that designates the
     officers or employees of the Sub-Adviser having authority to act for and on
     behalf of the Sub-Adviser in connection with this Agreement.  The
     Sub-Adviser agrees that, until such time as the Manager is otherwise
     informed in writing by a duly authorized officer of the Sub-Adviser, the
     Manager shall be authorized and entitled to rely on any notice,
     instruction, request, order or other communication, given either in writing
     or orally, and reasonably believed by the Manager in good faith to be given
     by an authorized representative of the Sub-Adviser.    

     12.  REPRESENTATIONS OF THE MANAGER.  The Manager represents and agrees
that:

          (a)  The Manager is registered as an "investment adviser" under the
     Advisers Act and has provided to the Sub-Adviser a copy of its most recent
     and complete Form ADV, along with a copy of the Investment Advisory and
     Management Agreement between the Manager and the Company and the current
     Company Prospectus regarding the Portfolio.  After any amendment to the
     documents referenced in this paragraph, the Manager will promptly furnish a
     copy of such amended document to the Sub-Adviser.  In addition, the Manager
     will provide the Sub-Adviser with notice of proposed changes in the
     Prospectus and the opportunity to review and comment upon such changes
     before they are finalized, wherever possible.

          (b)  The Manager and the Company are currently in material compliance
     and shall at all times continue to be in material compliance with the
     relevant requirements of the Advisers Act, the 1940 Act, all applicable
     state securities and insurance laws, and the rules thereunder, as they
     pertain to the Portfolio.

          (c)  The Manager shall furnish the Sub-Adviser with a certificate,
     signed by a duly authorized officer of the Manager that designates the
     officers or employees of the Manager having authority to act for and on
     behalf of the Manager in connection with this Agreement.  The Manager
     agrees that, until such time as the Sub-Adviser is otherwise informed in
     writing by a duly authorized officer of the Manager, the Sub-Adviser shall
     be authorized and entitled to rely on any notice, instruction, request,
     order or other communication, given either in writing or orally, and
     reasonably believed by the Sub-Adviser in good faith to be given by an
     authorized representative of the Manager.

     13.  LIABILITY, INDEMNIFICATION AND FORCE MAJEURE.

          13.1 The Sub-Adviser, its affiliated firms or its or their employees,
officers, or directors will not be liable for any error of judgment or mistake
of law or


                                         -9-
<PAGE>

for any loss suffered by the Portfolio, its shareholders, FBIC contract owners
or First Fortis contract owners in connection with the performance of their
duties under this Agreement, except for loss resulting from willful misfeasance,
bad faith or gross negligence on their part in the performance of their duties
or from reckless disregard by them of their duties under this Agreement.

          13.2 The Manager shall indemnify the Sub-Adviser against all claims
which may be made against the Sub-Adviser in connection with the exercise of the
powers and discretion conferred upon it pursuant to this Agreement, including
reasonable attorneys' fees incurred in connection with any such claim, EXCEPT
insofar as such claims allege or are the result of the willful misfeasance, bad
faith or gross negligence of the Sub-Adviser or any of its affiliated firms or
its or their employees, officers or directors or its or their breach of this
Agreement or violation of applicable law.  Conversely, the Sub-Adviser shall
indemnify the Manager and the Company against all claims alleging or resulting
from the willful misfeasance, bad faith or gross negligence of the Sub-Adviser
or any of its affiliated firms or its or their employees, officers or directors
or its or their breach of this Agreement or violation of applicable law,
including reasonable attorneys' fees incurred in connection with any such claim.

          13.3 Neither party shall be held responsible for their nonperformance
of any of their obligations under this Agreement by reason of any cause beyond
their control, including any breakdown or failure of transmission, communication
or computer facilities, postal or other strikes or similar industrial action and
the failure of any relevant exchange, clearing house and/or broker for any
reason to perform its obligations.

     14.  TERM, RENEWAL AND TERMINATION.

          14.1 This Agreement shall, with respect to the Portfolio, become
effective as of the date first above written and shall remain in force for two
years thereafter, and for successive annual periods thereafter but only so long
as each such continuance is specifically approved at least annually by (1) a
majority of the Directors of the Company who are not parties to this Agreement
or interested persons of any such parties (other than as Directors of the
Company), by vote cast in person at a meeting called for the purpose of voting
on such approval; or (2) a vote of the holders of a majority of the outstanding
voting securities (as defined in the 1940 Act) of such Portfolio.  It shall be
the duty of the Directors of the Company to request and evaluate, and the duty
of the Manager and Sub-Adviser to furnish, such information as may be reasonably
necessary to evaluate the terms of this Agreement and any renewal hereof.

          14.2 This Agreement may be terminated with respect to the Portfolio at
any time without the payment of any penalty by the Portfolio  (1) by a vote of a
majority of the entire Board of Directors of the Company on sixty (60) days'
written notice to the Manager and the Sub-Adviser; (2) by vote of the holders of
a majority


                                         -10-
<PAGE>

of the outstanding voting securities of such Portfolio (as defined in the 1940
Act); or (3) by the Sub-Adviser on 60 days' written notice to the Manager and
the Company.

          14.3 This Agreement shall automatically terminate in the event of its
assignment, as that term is defined in Section 2(a)(4) of the 1940 Act and the
rules thereunder.

          14.4 On the effective date of any termination of this Agreement or as
close to such date as is reasonably possible, the Sub-Adviser shall provide the
Manager with a final report for the Portfolio which will include the fair market
value for each of the Portfolio's investments.

          14.5 Upon the Manager's receipt or service of any notice given by or
to the Company concerning the termination of the Manager's appointment as the
investment adviser to the Company, the Manager shall immediately forward a copy
of such notice to the Sub-Adviser and the Sub-Adviser's appointment under this
Agreement shall terminate on the same date as the termination of the Manager's
appointment.

     15.  AMENDMENT.  No material amendment to or modification of this Agreement
shall be effective unless and until it is set forth in a written amendment
signed by the Manager and the Sub-Adviser and approved by the Board of Directors
of the Company and, if required by the 1940 Act, by the vote of a majority of
the outstanding shares of the Portfolio, as defined in the 1940 Act.

     16.  AUTHORITY AND ENFORCEABILITY.

          16.1 Each of the parties to this Agreement hereby represents that it
is duly authorized and empowered to execute, deliver, and perform this Agreement
and that such actions do not conflict with or violate any provision of law,
rule, regulation, other legal requirement, contract or other instrument to which
it is a party or to which it is subject and that this Agreement constitutes a
valid and binding obligation, inuring to the benefit of the Manager and the
Sub-Adviser and their respective successors, enforceable in accordance with its
terms.

          16.2 If any provision of this Agreement shall be held or made invalid
or unenforceable by a court decision, statute, rule or otherwise, the remainder
of this Agreement shall not be affected thereby and any such invalid or
unenforceable provision shall be deemed to be replaced with a valid and
enforceable provision that most closely reflects the intention of the parties.

     17.  APPLICABLE LAW.  To the extent that state law is not preempted by the
provisions of any law of the United States heretofore or hereafter enacted, as
the same may be amended from time to time, this Agreement shall be administered,
construed and enforced according to the laws of the State of Minnesota.


                                         -11-
<PAGE>

     18.  NOTICES.  All notices hereunder shall be in writing and shall be
delivered in person or by facsimile (followed by delivery in person) to the
parties at the addresses set forth below:

     If to the Manager:            Fortis Advisers, Inc.
                                   500 Bielenberg Drive
                                   St. Paul, MN 55125
                                   Fax #:  (612) 738-5262
                                   Attn:  Legal Department

     If to the Sub-Adviser:        The Dreyfus Corporation
                                   200 Park Avenue
                                   New York, NY 10166
                                   Fax #:  (212) 922-6880
                                   Attn:  Deputy General Counsel

or such other name or address as may be given in writing to the other party.
     
Unless specifically provided elsewhere, notice given as provided above shall be
deemed to have been given, if by personal delivery, on the day of such delivery,
and if by facsimile and mail, on the date on which such facsimile is sent.

     19.  EXECUTION.  This Agreement may be executed in two or more
counterparts, each of which shall be deemed to be an original, but all of which
together shall constitute one and the same instrument.

     IN WITNESS WHEREOF, the parties hereto have caused this instrument to be
executed by their duly authorized officers.

Attest:                                 FORTIS ADVISERS, INC.



/s/ John E. Hite                        By:  /s/ Scott R. Plummer
- ---------------------------                  ----------------------------
John E. Hite                                 Scott R. Plummer
Assistant Secretary                          Vice President


Attest:                                 THE DREYFUS CORPORATION



/s/ Lawrence B. Stoller                 By:  /s/ Lawrence S. Kash       
- ---------------------------                  ----------------------------
Lawrence B. Stoller                          Lawrence S. Kash
Assistant General Counsel                    Vice Chairman


                                         -12-
<PAGE>

                                      EXHIBIT A


                  EXAMPLES OF THE ROUTINE ACCOUNTING AND OPERATIONAL
                  INFORMATION AND DOCUMENTATION REQUIREMENTS OF THE
                     PORTFOLIO TO BE SATISFIED BY THE SUB-ADVISER

                   The following information is to be provided to:

                              Fortis Series Fund, Inc.
                               ATTN:  Fund Accounting
                                   P.O. Box 64284
                                St. Paul, MN  55164
                                FAX:  (612) 738-0996
                        PHONE:  (612) 738-4510, 5517 or 5369
                                          
     1.   DOCUMENTATION OF TRADES.  On a daily basis, via facsimile, a listing
of that day's executed trades and copies of the trade tickets for that day's
trades.  At the end of each week, by mail, hard copies of documentation for that
week's executed trades. The signature or initials of the portfolio manager or
duly authorized officer or employee of the Sub-Adviser should be placed on the
trade tickets to validate the authenticity of the trading information.  With
respect to trades for which no DTC affirmation is available, hard copies of 
broker confirmations for such trades.

     2.   PORTFOLIO HOLDINGS.  On a weekly basis, via facsimile and mail, a list
of the Portfolio's holdings.  The list should include the following information,
for each of the Portfolio's holdings, where applicable:  long description,
cusip/sedol number, maturity date, par/principal amounts, market value, market
price, coupon rate and bond rating.

     3.   SECURITY PRICING.  On a daily basis, by telephone or facsimile: 
(i) review with the Company's Fund Accounting Department (the "Department") the
prices of the Portfolio's securities, which shall be provided by the Department;
(ii) inform the Department of its agreement or disagreement with such prices;
(iii) provide the Department with the basis for any disagreement it may have
with respect to a particular security's price and its opinion (along with
outside broker quotes) as to what that security's price should be; and (iv) in
any instance where the pricing services utilized by the Department do not
provide a price for a security held by the Portfolio, provide the Department
with reasonable assistance in determining a price for such security.


                                         A-1

<PAGE>

                          INVESTMENT SUB-ADVISORY AGREEMENT


     Agreement dated April 2, 1998 by and between Fortis Advisers, Inc., a
Minnesota Corporation (the "Manager") and Berger Associates, Inc, a corporation
organized under the laws of the State of Delaware (the "Sub-Adviser") whose
principal office is located at 210 University Boulevard, Suite 900, Denver,
Colorado 80206.
          
     WHEREAS, the Manager serves as the investment adviser, manager, registrar,
transfer agent and dividend disbursing agent for Fortis Series Fund, Inc. (the
"Company"), an open-end, management investment company registered with the
Securities and Exchange Commission ("SEC") pursuant to the Investment Company
Act of 1940, as amended ("1940 Act"), that is comprised of a number of separate
series of investments that act as funding vehicles for various variable annuity
contracts and variable universal life insurance policies issued by Fortis
Benefits Insurance Company ("FBIC") and/or First Fortis Life Insurance Company
("First Fortis");

     WHEREAS, the Manager desires to retain the Sub-Adviser to assist the
Manager in furnishing an investment program to one series of the Company, the
Small Cap Value Series (the "Portfolio");

     NOW, THEREFORE, in consideration of the mutual agreements herein made, the
Manager and the Sub-Adviser agree as follows:

     1.   APPOINTMENT AND EXPENSES OF THE SUB-ADVISER.  The Manager hereby
appoints the Sub-Adviser to serve as sub-adviser with respect to the assets of
the Portfolio and to perform the services hereinafter set forth and the
Sub-Adviser hereby accepts such appointment.  The Sub-Adviser agrees, for the
compensation herein provided, to assume all obligations herein provided and bear
all its personnel and other expenses associated with the performance of its
services hereunder.  The Company shall be responsible for the Portfolio's
administrative, operational, business and other direct expenses, including, but
not limited to:  (a) the fees of the Manager as the investment adviser (and, any
reimbursement of advisory fees required by any expense limitation provision
shall be the sole responsibility of the Manager); (b) fees pursuant to any plan
of distribution that the Portfolio may adopt; (c) the Portfolio's brokerage and
commission expenses, including all ordinary and reasonable transaction costs;
(d) fees and expenses of pricing services used by the Company to determine the
value of the Portfolio's holdings; (e) Federal, state, local and foreign taxes,
including issue and transfer taxes incurred by or levied on the Portfolio;
(f) interest charges on any Portfolio borrowings; (g) the Company's
organizational and offering expenses; (h) the cost of the Company's personnel
providing services to the Company; (i) fees and expenses of registering the
Company's shares under the appropriate Federal securities laws and of qualifying
the Company's shares under applicable state securities laws and pursuant to any
foreign laws; (j) expenses of printing and distributing reports to the Company's
shareholders, proxy materials, prospectuses and distribution of dividends;
(k) costs


<PAGE>

of the Company's shareholders' meetings and proxy solicitation; (l) charges and
expenses of the Company's custodian and registrar, transfer agent and dividend
disbursing agent; (m) compensation of the Company's officers, directors and
employees that are not "affiliated persons" or "interested persons" [as defined
in Section 2(a) of the 1940 Act and the rules, regulations and releases relating
thereto] of the Sub-Adviser; (n) the Company's legal and auditing expenses;
(o) cost of certificates representing shares of the Portfolio; (p) the Company's
costs of stationery and supplies; (q) the Company's insurance expenses; (r) the
Company's association membership dues; (s) travel expenses of officers and
employees of the Sub-Adviser to the extent such expenses relate to the
attendance of such persons at meetings at the request of the Board of Directors
of the Company (EXCEPT that a representative of the Sub-Adviser will attend one
Board meeting per year, at the Sub-Adviser's own expense); and (t) travel
expenses for attendance at Board of Directors meetings by members of the Board
of Directors of the Company who are not "interested persons" or "affiliated
persons" of the Sub-Adviser.  The Sub-Adviser shall for all purposes herein be
deemed to be an independent contractor and shall, except as expressly provided
or authorized (whether herein or otherwise), have no authority to act for or on
behalf of the Company in any way or otherwise be deemed an agent of the Company.

     2.   DUTIES OF THE SUB-ADVISER.  The Sub-Adviser will deal in good faith
and with due diligence and will use professional skill, care and judgment in the
performance of its duties under this Agreement.  In so doing, the Sub-Adviser
shall formulate and implement a continuing program for the management of the
assets of the Portfolio.  The Sub-Adviser shall amend and update such program
from time to time as financial and other economic conditions warrant.  The
Sub-Adviser shall make all determinations with respect to the investment of the
assets of the Portfolio and shall take such steps as may be necessary to
implement the same, including the placement of purchase and sale orders on
behalf of the Portfolio.  The Manager shall be responsible for the
administration of the investment activities of the Company and the Portfolio,
including compliance with the requirements of the 1940 Act, except for the
investment management activities specifically delegated to the Sub-Adviser
pursuant to this Agreement.

     3.   POWERS OF THE SUB-ADVISER.

          3.1  The Sub-Adviser's power to direct the investment and reinvestment
of the assets of the Portfolio shall be exercised in accordance with applicable
law, the Company's Articles of Incorporation and the investment objectives,
policies and restrictions set forth in the then-current Prospectus and Statement
of Additional Information (collectively the "Prospectus") relating to the
Portfolio contained in the Company's Registration Statement under the 1940 Act
and the Securities Act of 1933, as amended.  The Company and/or the Manager may
also place additional limitations on the Sub-Adviser's investment decisions by
written notice to the Sub-Adviser.  The Company agrees to provide to the
Sub-Adviser at or before the time they become effective a copy of the documents 


                                         -2-
<PAGE>

mentioned above and all changes made, or supplements, to such documents.  In
addition, the Company shall provide (or cause the Custodian to provide) timely
information to the Sub-Adviser regarding such matters as the composition of
assets in the Portfolio, cash requirements and cash available for investment in
the Portfolios and all other information as may be reasonably necessary for the
Sub-Adviser to perform its responsibilities hereunder.

          3.2  While the Sub-Adviser will have day-to-day responsibility for the
discretionary investment decisions to be made on behalf of the Portfolio, the
Sub-Adviser will be subject to oversight by the Manager.  Such oversight,
however, shall not require prior approval of discretionary investment decisions
made by the Sub-Adviser except as may be required by applicable law, the
Portfolio's investment policies and restrictions and/or any limitations imposed
on the Sub-Adviser by the Company and/or the Manager pursuant to the preceding
paragraph.  The Manager shall retain the right to instruct the Sub-Adviser to
effect any transactions necessary to ensure compliance with the Portfolio's
investment policies and restrictions as well as the requirements of Subchapter M
of the Internal Revenue Code and the provisions of Section 817(h) of the
Internal Revenue Code and the regulations promulgated thereunder.

          3.3  In the event the Sub-Adviser's compliance with any amendment of
the Portfolio's investment objectives, policies and restrictions or other
limitations placed on the Sub-Adviser's investment decisions with respect to the
Portfolio would interfere with the completion of any transaction commenced on
behalf of the Portfolio prior to the Sub-Adviser's knowledge of such amendment,
the Sub-Adviser may complete such transaction unless doing so would violate any
applicable law, rule or regulation.  In such an event, the Sub-Adviser will not
be responsible for any loss that may result from the completion of the
transaction.

          3.4  Further, and except as may be qualified elsewhere in this
Agreement, the Sub-Adviser is hereby authorized, for and on behalf of the
Company, with respect to the Portfolio, in its discretion to:

               (a)  exercise any conversion and/or subscription rights available
     in connection with any securities or other investments held in the
     Portfolio;

               (b)  maintain all or part of the Portfolio's assets uninvested in
     short-term income-producing instruments for such periods of time as shall
     be deemed reasonable and prudent by the Sub-Adviser;

               (c)  instruct the Custodian, in accordance with the Custodian
     Agreement, to deliver for cash received, securities or other cash and/or 
     securities instruments sold, exchanged, redeemed or otherwise disposed of
     from the Portfolio, and to pay cash for securities or other cash and/or


                                         -3-
<PAGE>

     securities instruments delivered to the Custodian and/or credited to the
     Portfolio upon acquisition of the same for the Portfolio;

               (d)  determine how to vote all proxies received with respect to
     securities held in the Portfolio and direct the Custodian as to the voting
     of such proxies; and
     
               (e)  generally, perform any other act necessary to enable the
     Sub-Adviser to carry out its obligations under this Agreement.   

     4.   SELECTION OF BROKER-DEALERS.  The Sub-Adviser shall select the brokers
and dealers through whom transactions on behalf of the Portfolio will be
executed and the markets on or in which such transactions will be executed and
shall place, in the name of the Portfolio or its nominee (or appropriate foreign
equivalent), all such orders.  In selecting brokers and dealers to execute such
transactions, and in negotiating brokerage commissions, and in obtaining
research, statistical and other information from brokers and dealers in
connection with Portfolio transactions, the Sub-Adviser shall comply with the
description of the process contained in the Prospectus.  This notwithstanding,
when the Sub-Adviser places orders for the purchase or sale of Portfolio assets,
so long as the Sub-Adviser uses reasonable efforts in seeking the best execution
in selecting brokers to execute such orders, the Sub-Adviser is expressly
authorized to consider the fact that a broker has furnished, or has agreed to
furnish in the future, research, statistical or other information or services
permitted under Section 28(e) of the Securities and Exchange Act of 1934
("Services") provided by such broker that enhance the Sub-Adviser's investment
research and portfolio management capability generally.  It is understood that
the Sub-Adviser may not use all Services in connection with the Portfolio.  
Sub-Adviser will not be required or deemed to have the duty to obtain the lowest
brokerage commission rates available or to combine or arrange orders to obtain
the lowest brokerage commission rates available on transactions in the
Portfolio.  If the amount of commission charged by a broker is reasonable in
relation to the value of the brokerage functions and the Services provided by
such broker to Sub-Adviser, Sub-Adviser may direct brokerage transactions to
such broker notwithstanding the fact that such broker charges a higher
commission than those that another broker might charge.

          (a)  It is understood that certain other clients (including other
     funds, portfolios and accounts) of the Sub-Adviser may have investment
     objectives and policies similar to those of the Portfolio and that the
     Sub-Adviser may, from time to time, make recommendations that result in the
     purchase (or sale) of a particular security by its other clients and the
     Portfolio during the same period of time.  If transactions on behalf of
     more than one client during the same period increase the demand for
     securities being purchased or the supply of securities being sold, there
     may be an adverse effect on price or quantity.  In such event, the
     Sub-Adviser shall allocate the securities or investments to be purchased or
     sold, as well as the expenses incurred in the


                                         -4-
<PAGE>

     transactions (including price) in a manner the Sub-Adviser considers
     equitable and consistent with its obligations to the Portfolio and the
     Sub-Adviser's other clients.

          (b)  The Sub-Adviser agrees that it will only enter into transactions
     that are covered by Section 10(f) or Section 17(e) of the 1940 Act if it
     has (i) complied with Rule 10f-3 or Rule 17e-1 thereunder, respectively, or
     the terms of an appropriate exemptive order issued to the Company by the
     SEC, and (ii) has complied with the procedures adopted thereunder by the
     Board of Directors of the Company which may, pursuant to authority granted
     by the Company, be supplemented by interpretive guidelines of the Manager. 
     Aside from parties that are known or should be known by the Sub-Adviser,
     the Manager shall promptly notify the Sub-Adviser in writing of any
     additional parties with whom engaging in a transaction for the Portfolio
     would result in a violation of the 1940 Act.

     5.   REPORTS AND INFORMATION TO BE PROVIDED BY THE SUB-ADVISER.  The
Sub-Adviser shall furnish such information and reports relating to the
Portfolio, its holdings and transactions involving Portfolio securities as the
Manager and/or the Company may reasonably require to fulfill its or their legal
responsibilities or to meet regulatory requirements or discharge other duties
they may have.  Among the subjects of the reports and information to be provided
by the Sub-Adviser, to the extent such reports and information are not otherwise
available from the Portfolio's Custodian, are the following:

          (a)  Information required by the Manager to determine the Company's
     and Portfolio's compliance with the 1940 Act, the Advisers Act, the
     Internal Revenue Code, applicable federal and state securities and
     insurance laws and other applicable laws and regulations or regulatory and
     taxing authorities in the United States and other relevant countries;

          (b)  Information required by the Manager to meet the accounting and
     operational requirements of the Portfolio.  Specific examples of the types
     of reports and information that will be needed by the Manager and the
     Company are set forth in Exhibit A, attached hereto;

          (c)  Information required by the Manager to satisfy its reporting
     obligations to the Company arising from the Investment Advisory and
     Management Agreement between the Manager and the Company;

          (d)  Information reasonably requested by the Manager to determine the
     Portfolio's compliance with Rule 17f-5 under the 1940 Act, relating to
     foreign custodians and sub-custodians;


                                         -5-
<PAGE>

          (e)  Information required by the Manager to determine the
     Sub-Adviser's compliance with Rule 17j-1 under the 1940 Act with respect to
     the Sub-Adviser's activities on behalf of the Portfolio;

          (f)  Information required by the Manager to determine compliance with
     Rule 10f-3 and Rule 17e-1 under the 1940 Act with respect to the
     Sub-Adviser's (or its affiliates') activities on behalf of the Portfolio;
     and

          (g)  Information reasonably necessary to respond to specific inquiries
     from the Company's management and/or Board of Directors.    

     6.   NON-EXCLUSIVE SERVICES, CONFLICTS OF INTEREST AND MATERIAL NONPUBLIC
INFORMATION.  The Manager understands that the Sub-Adviser and its affiliates
may furnish investment management and advisory services to others, and that the
Sub-Adviser and its affiliates shall be at all times free, in their discretion,
to make recommendations to, and investments for, others which may or may not
correspond to investments made for the Portfolio.  The Manager further
understands that the Sub-Adviser, its affiliates, and any officer, director,
stockholder, employee or any member of their families may or may not have an
interest in the securities whose purchase and sale the Sub-Adviser effects for
the Portfolio.  Actions taken by the Sub-Adviser on behalf of the Portfolio may
be the same as, or different from, actions taken by the Sub-Adviser on its own
behalf or for others or from actions taken by the Sub-Adviser's affiliates,
officers, directors, partners, employees of the Sub-Adviser or its affiliates,
or the family members of such persons or other investors.  The Sub-Adviser
represents that it has in effect a code of ethics that complies with Rule 17j-1
under the 1940 Act and has procedures in place that, taken together, provide
reasonable enforcement of the code's provisions.  Similarly, the Sub-Adviser
represents that, with respect to the use of nonmaterial nonpublic information,
it has complied, and will continue to comply, with Section 204A of the
Investment Advisers Act of 1940, as amended ("Advisers Act") and any rules
thereunder.

     7.   DISCLOSURE OF INFORMATION AND CONFIDENTIALITY.

          7.1  The Sub-Adviser, the Company and the Manager, either during, or
after the termination of, this Agreement, are authorized with respect to matters
arising out of this Agreement to make any disclosures and/or participate in any
conduct required by any applicable law, rule, regulation, self-regulating
organization, investment exchange or any other body having regulatory or
enforcement responsibility with respect to any investment business conducted by
the Sub-Adviser on behalf of the Portfolio.

          7.2  Subject to the preceding paragraph, the Sub-Adviser agrees that
all information which has or will come into its possession or knowledge
concerning the Portfolio or its investments in connection with this Agreement
shall be held by the Sub-Adviser in confidence.  The Sub-Adviser shall make no
use of such


                                         -6-
<PAGE>

information other than for the performance of this Agreement, shall disclose
such information only to the directors, officers or employees of the Sub-Adviser
or its affiliated firms or of any third party appointed pursuant to this
Agreement requiring such information and shall not disclose such information to
any other person without the written consent of the Company; provided, however,
that to the extent the investments for the Portfolio are similar to investments
for other clients of the Sub-Adviser, the Sub-Adviser may disclose such
investments without direct reference to the Portfolio.  The Sub-Adviser may also
include the name of the Portfolio in a representative client list.

          7.3  Subject to the preceding paragraph, the Company and the Manager
agree that all information which has or will come into their possession or
knowledge concerning the operations and procedures of the Sub-Adviser shall be
held by the Company and the Manager in confidence.  The Company and the Manager
shall make no use of such information other than for the performance of this
Agreement, shall disclose such information only to their directors, officers or
employees or those of its affiliated firms requiring such information and shall
not disclose such information to any other person without the written consent of
the Sub-Adviser.

          7.4  The Manager and the Company agree not to refer to Berger
Associates, Inc. or Perkins, Wolf, McDonnell & Company or their affiliates in
any advertisement or other document without prior consent of the Sub-Adviser. 
Similarly, Berger Associates, Inc. and Perkins, Wolf, McDonnell & Company and
their affiliates shall not refer to the Manager, the Company, the Portfolio, or
other Fortis affiliates in any advertisement or other document without the
Manager's prior consent.  However, the Parties to this Agreement agree that they
may reference one another as necessary in regulatory and other legal filings. 
Further, the parties agree that they will not unreasonably withhold permission
to use their names or otherwise reference them in materials used to describe the
Portfolio and/or the Company. 

     8.   DEALINGS WITH THE CUSTODIAN.  The Manager shall notify the Sub-Adviser
of the appointment of the custodian(s) ("Custodian") for all or any portion of
the Portfolio's assets, shall provide the Sub-Adviser with a true and complete
copy of each agreement with the Custodian that deals with the Portfolio's assets
("Custodian Agreements"), and shall provide the Sub-Adviser with the names of
persons authorized to act on behalf of the Custodian and such other information
as the Sub-Adviser shall reasonably require.  The Sub-Adviser agrees to give
instructions in accordance with the terms of the applicable Custodian
Agreements.  The Company agrees to provide promptly to the Sub-Adviser a copy of
all relevant Custodian Agreements, and all changes made to such documents, at or
before the time they become effective.

     9.   DELEGATION OF THE SUB-ADVISER'S RESPONSIBILITIES.  Notwithstanding
anything herein to the contrary, Sub-Adviser may delegate any or all of its 


                                         -7-
<PAGE>

investment management duties and responsibilities under this Agreement to
Perkins, Wolf, McDonnell & Company.  No delegation pursuant to this provision
shall relieve Sub-Adviser of its duties or responsibilities thereunder, and
Sub-Adviser shall appropriately oversee, monitor and evaluate the activities of
any party appointed hereunder for the Portfolio. The Sub-Adviser (or such
delegatee) may employ, retain or otherwise avail itself of the services and
facilities of persons and entities within its own organization or any other
organization for the purpose of providing the Sub-Adviser (or such delegatee),
the Manager or the Portfolio with such information, advice or assistance,
including but not limited to advice regarding economic factors and trends and
advice as to transactions in specific securities, as the Sub-Adviser (or such
delegatee's) may deem necessary, appropriate or convenient for the discharge of
its obligations hereunder or as may otherwise be helpful to the Manager or the
Portfolio, or in the discharge of the Sub-Adviser's (or such delegatee's)
overall responsibilities with respect to the other accounts for which it serves
as investment manager or investment adviser.  The Sub-Adviser's (or such
delegatee's) acquisition of information, advice or assistance pursuant to this
paragraph shall be at the Sub-Adviser's (or such delegatee's) own expense and
shall not relieve the Sub-Adviser (or such delegatee) of any of its obligations
under this Agreement.

     10.  COMPENSATION.  For the services to be rendered under this Agreement
and the facilities to be furnished, the Manager shall pay to the Sub-Adviser for
each fiscal year of the Company, a monthly management fee at the annual rate of
 .50 of 1% of the Portfolio's first $50 million of average daily net assets and
 .45 of 1% of the Portfolio's average daily net assets in excess of $50 million. 
The monthly management fee shall be paid to the Sub-Adviser not later than the
tenth business day of the month following the month in which such services were
rendered and shall be based upon the average net asset values of all the issued
and outstanding shares of the Portfolio as determined as of the close of each
business day of the month pursuant to the Articles of Incorporation, Bylaws and
currently effective Prospectus of the Portfolio.  Payments of the monthly
management fee will be accompanied by documentation that verifies the
calculation of such fee.  If the management of the Portfolio by the Sub-Adviser
commences or terminates at any time other than the beginning or end of a month,
the management fee shall be prorated for that portion of such month during which
this Agreement was in force.

     11.  REPRESENTATIONS OF THE SUB-ADVISER.  The Sub-Adviser represents and
agrees that:

          (a)  The Sub-Adviser is registered as an "investment adviser" under
     the Advisers Act and is currently in compliance in all material respects
     and shall at all times continue to comply in all material respects with the
     requirements imposed upon it by the Advisers Act, the 1940 Act, the
     Internal Revenue Code, state securities laws and all applicable rules and
     regulations thereunder as they relate to the services provided under this
     Agreement.  The Sub-Adviser will immediately notify the Manager if it
     becomes aware of the


                                         -8-
<PAGE>

     occurrence of any event that would disqualify the Sub-Adviser from serving
     as an investment adviser of an investment company pursuant to Section 9 of
     the 1940 Act or any other applicable law or regulation.

          (b)  The Sub-Adviser will maintain, keep current and accurate, and
     preserve all records with respect to the Portfolio as are required of it
     under the Advisers Act and the 1940 Act, in the manner provided by such
     Acts and the rules thereunder.  The Sub-Adviser agrees that such records
     are the property of the Company, and following termination of this
     Agreement will be surrendered to the Company promptly upon request except
     to the extent that they are required to be retained by the Sub-Adviser
     under applicable law.  Further, such records shall be open to inspection by
     the Company.  The Sub-Adviser will also assure that the Company will have
     the same access as the Sub-Adviser has to records relating to the Portfolio
     that are held by relevant third parties.  Such inspections will be at
     reasonable times during business hours and only upon reasonable notice of
     the Company's desire to make an inspection.

          (c)  The Sub-Adviser agrees to advise the Manager of any developments,
     such as the reassignment of a portfolio manager, that would require
     Prospectus disclosure and to provide any necessary information related to
     such developments.

          (d)  The Sub-Adviser has provided the Manager and the Company with a
     copy of its most recent and complete Form ADV and will promptly furnish
     them with copies of any material amendments to the Form.

          (e)  If the Sub-Adviser's performance of its obligations under this
     Agreement takes place in the United Kingdom, the Sub-Adviser shall be and
     shall remain during the effectiveness of this Agreement, a member of the
     Investment Management Regulatory Organization, Ltd. ("IMRO") and thereby
     regulated in the conduct of Investment Business (as defined in IMRO's
     rules) by the IMRO.  The Company and the Manager will be treated as a
     Non-Private Customer (as defined in IMRO's rules) of the Sub-Adviser.

          (f)  The Sub-Adviser shall furnish the Manager with a certificate,
     signed by a duly authorized officer of the Sub-Adviser that designates the
     officers or employees of the Sub-Adviser having authority to act for and on
     behalf of the Sub-Adviser in connection with this Agreement.  The
     Sub-Adviser agrees that, until such time as the Manager is otherwise
     informed in writing by a duly authorized officer of the Sub-Adviser, the
     Manager shall be authorized and entitled to rely on any notice,
     instruction, request, order or other communication, given either in writing
     or orally, and reasonably believed by the Manager in good faith to be given
     by an authorized representative of the Sub-Adviser.    


                                         -9-
<PAGE>

     12.  REPRESENTATIONS OF THE MANAGER.  The Manager represents and agrees
that:

          (a)  The Manager is registered as an "investment adviser" under the
     Advisers Act and has provided to the Sub-Adviser a copy of its most recent
     and complete Form ADV, along with a copy of the Investment Advisory and
     Management Agreement between the Manager and the Company and the current
     Company Prospectus regarding the Portfolio.  After any amendment to the
     documents referenced in this paragraph, the Manager will promptly furnish a
     copy of such amended document to the Sub-Adviser.  In addition, the Manager
     will provide the Sub-Adviser with notice of proposed changes in the
     Prospectus and the opportunity to review and comment upon such changes
     before they are finalized, wherever possible.

          (b)  The Manager and the Company are currently in material compliance
     and shall at all times continue to be in material compliance with the
     relevant requirements of the Advisers Act, the 1940 Act, all applicable
     state securities and insurance laws, and the rules thereunder, as they
     pertain to the Portfolio.

          (c)  The Manager shall furnish the Sub-Adviser with a certificate,
     signed by a duly authorized officer of the Manager that designates the
     officers or employees of the Manager having authority to act for and on
     behalf of the Manager in connection with this Agreement.  The Manager
     agrees that, until such time as the Sub-Adviser is otherwise informed in
     writing by a duly authorized officer of the Manager, the Sub-Adviser shall
     be authorized and entitled to rely on any notice, instruction, request,
     order or other communication, given either in writing or orally, and
     reasonably believed by the Sub-Adviser in good faith to be given by an
     authorized representative of the Manager.

     13.  LIABILITY, INDEMNIFICATION AND FORCE MAJEURE.

          13.1 The Sub-Adviser, its affiliated firms or its or their employees,
officers, or directors will not be liable for any error of judgment or mistake
of law or for any loss suffered by the Portfolio, its shareholders, FBIC
contract owners or First Fortis contract owners in connection with the
performance of their duties under this Agreement, except for loss resulting from
willful misfeasance, bad faith or gross negligence on their part in the
performance of their duties or from reckless disregard by them of their duties
under this Agreement.

          13.2 The Manager shall indemnify the Sub-Adviser against all claims
which may be made against the Sub-Adviser in connection with the exercise of the
powers and discretion conferred upon it pursuant to this Agreement, EXCEPT
insofar as such claims are the result of the willful misfeasance, bad faith or
gross negligence of the Sub-Adviser or any of its affiliated firms or its or
their employees, officers or


                                         -10-
<PAGE>

directors or its or their material breach of this Agreement or violation of
applicable law.  Conversely, the Sub-Adviser shall indemnify the Manager and the
Company against all claims resulting from the willful misfeasance, bad faith or
gross negligence of the Sub-Adviser or any of its affiliated firms or its or
their employees, officers or directors or its or their material breach of this
Agreement or violation of applicable law.

          13.3 Neither party shall be held responsible for their non-performance
of any of their obligations under this Agreement by reason of any cause beyond
their control, including any breakdown or failure of transmission, communication
or computer facilities, postal or other strikes or similar industrial action and
the failure of any relevant exchange, clearing house and/or broker for any
reason to perform its obligations.

     14.  TERM, RENEWAL AND TERMINATION.

          14.1 This Agreement shall, with respect to the Portfolio, become
effective as of the date first above written and shall remain in force for two
years thereafter, and for successive annual periods thereafter but only so long
as each such continuance is specifically approved at least annually by (1) a
majority of the Directors of the Company who are not parties to this Agreement
or interested persons of any such parties (other than as Directors of the
Company), by vote cast in person at a meeting called for the purpose of voting
on such approval; or (2) a vote of the holders of a majority of the outstanding
voting securities (as defined in the 1940 Act) of such Portfolio.  It shall be
the duty of the Directors of the Company to request and evaluate, and the duty
of the Manager and Sub-Adviser to furnish, such information as may be reasonably
necessary to evaluate the terms of this Agreement and any renewal hereof.

          14.2 This Agreement may be terminated with respect to the Portfolio at
any time without the payment of any penalty by the Portfolio (1) by a vote of a
majority of the entire Board of Directors of the Company on sixty (60) days'
written notice to the Manager and the Sub-Adviser; (2) by vote of the holders of
a majority of the outstanding voting securities of such Portfolio (as defined in
the 1940 Act); or (3) by the Sub-Adviser on 60 days' written notice to the
Manager and the Company.

          14.3 This Agreement shall automatically terminate in the event of its
assignment, as that term is defined in Section 2(a)(4) of the 1940 Act and the
rules thereunder.

          14.4 On the effective date of any termination of this Agreement or as
close to such date as is reasonably possible, the Sub-Adviser shall provide the
Manager with a final report for the Portfolio.

          14.5 Upon the Manager's receipt or service of any notice given by or
to the Company concerning the termination of the Manager's appointment as the 


                                         -11-
<PAGE>

investment adviser to the Company, the Manager shall immediately forward a copy
of such notice to the Sub-Adviser and the Sub-Adviser's appointment under this
Agreement shall terminate on the same date as the termination of the Manager's
appointment.

     15.  AMENDMENT.  No amendment to or modification of this Agreement shall be
effective unless and until it is set forth in a written amendment signed by the
Manager and the Sub-Adviser and if so required approved by the vote of a
majority of the outstanding shares of the Portfolio, as defined in the 1940 Act.

     16.  AUTHORITY AND ENFORCEABILITY.

          16.1 Each of the parties to this Agreement hereby represents that it
is duly authorized and empowered to execute, deliver, and perform this Agreement
and that such actions do not conflict with or violate any provision of law,
rule, regulation, other legal requirement, contract or other instrument to which
it is a party or to which it is subject and that this Agreement constitutes a
valid and binding obligation, inuring to the benefit of the Manager and the
Sub-Adviser and their respective successors, enforceable in accordance with its
terms.

          16.2 If any provision of this Agreement shall be held or made invalid
or unenforceable by a court decision, statute, rule or otherwise, the remainder
of this Agreement shall not be affected thereby and any such invalid or
unenforceable provision shall be deemed to be replaced with a valid and
enforceable provision that most closely reflects the intention of the parties.

     17.  APPLICABLE LAW.  To the extent that state law is not preempted by the
provisions of any law of the United States heretofore or hereafter enacted, as
the same may be amended from time to time, this Agreement shall be administered,
construed and enforced according to the laws of the State of Minnesota.

     18.  NOTICES.  All notices hereunder shall be in writing and shall be
delivered in person or by facsimile (followed by delivery in person) to the
parties at the addresses set forth below:

     If to the Manager:            Fortis Advisers, Inc.
                                   500 Bielenberg Drive
                                   St. Paul, MN 55125
                                   Fax #:  (612) 738-5262
                                   Attn:  Legal Department


                                         -12-
<PAGE>

     If to the Sub-Adviser:        Berger Associates, Inc.
                                   210 University Boulevard - Suite 900
                                   Denver, Colorado 80206
                                   Attention:  Kevin Fay
                                   Fax #:  (303) 322-0369

or such other name or address as may be given in writing to the other party.

Unless specifically provided elsewhere, notice given as provided above shall be
deemed to have been given, if by personal delivery, on the day of such delivery,
and if by facsimile and mail, on the date on which such facsimile is sent.

     19.  EXECUTION.  This Agreement may be executed in two or more
counterparts, each of which shall be deemed to be an original, but all of which
together shall constitute one and the same instrument.

     IN WITNESS WHEREOF, the parties hereto have caused this instrument to be
executed by their duly authorized officers.

Attest:                                   FORTIS ADVISERS, INC.


/s/ John E. Hite                          By: /s/ Scott R. Plummer      
- ---------------------------                   --------------------------
John E. Hite                                  Scott R. Plummer
2nd Vice President                            Vice President


Attest:                                   BERGER ASSOCIATES INC.



/s/ K. R. Fay                             By: /s/ Gerard M. Lavin       
- ---------------------------                   --------------------------
K. R. Fay                                     Gerard M. Lavin
Senior Vice President and Secretary           President

                                         -13-
<PAGE>

                                      EXHIBIT A


                  EXAMPLES OF THE ROUTINE ACCOUNTING AND OPERATIONAL
                      INFORMATION AND DOCUMENTATION REQUIREMENTS
                 OF THE PORTFOLIO TO BE SATISFIED BY THE SUB-ADVISER

                  The following information is to be provided to:

                              Fortis Series Fund, Inc.
                               ATTN:  Fund Accounting
                                   P.O. Box 64284
                                St. Paul, MN  55164
                                FAX:  (612) 738-0996
                        PHONE:  (612) 738-4510, 5517 or 5369

     
1.   DOCUMENTATION OF TRADES.  On a trade date plus one basis, via facsimile, a
listing of that day's executed trades and copies of the trade tickets for those
trades.  At the end of each week, by mail, hard copies of documentation for that
week's executed trades.  The signature or initials of the portfolio manager or
duly authorized officer or employee of the Sub-Adviser should be placed on the
trade tickets to validate the authenticity of the trading information.  On a
weekly basis, with respect to trades for which no DTC affirmation is available,
hard copies of broker confirmations for such trades.

     2.   PORTFOLIO HOLDINGS.  On a monthly basis, via facsimile, a list of the
Portfolio's holdings.  The list should include the following information, for
each of the Portfolio's holdings, where applicable:  long description,
cusip/sedol number, maturity date, par/principal amounts, market value, market
price, coupon rate and bond rating.

     3.   SECURITY PRICING.  On a daily basis, by telephone or facsimile: 
(i) upon request by the Company, review with the Company's Fund Accounting
Department (the "Department") the prices of the Portfolio's securities, which
shall be provided by the Department; (ii) inform the Department any material
disagreement with such prices; (iii) provide the Department with the basis for
any disagreement it may have with respect to a particular security's price and
its opinion (along with outside broker quotes) as to what that security's price
should be; and (iv) in any instance where the pricing services utilized by the
Department do not provide a price for a security held by the Portfolio, provide
the Department with the reasonable assistance necessary for them to determine a
price for such security.


                                         A-1

<PAGE>

                          INVESTMENT SUB-ADVISORY AGREEMENT


     Agreement dated April 2, 1998 by and between Fortis Advisers, Inc., a
Minnesota Corporation (the "Manager") and Alliance Capital Management L.P., a
limited partnership organized under the laws of Delaware (the "Sub-Adviser")
whose principal office is located at 1345 Avenue of the Americas, New York, New
York 10105.
          
     WHEREAS, the Manager serves as the investment adviser, manager, registrar,
transfer agent and dividend disbursing agent for Fortis Series Fund, Inc. (the
"Company"), an open-end, management investment company registered with the
Securities and Exchange Commission ("SEC") pursuant to the Investment Company
Act of 1940, as amended ("1940 Act"), that is comprised of a number of separate
series of investments that act as funding vehicles for various variable annuity
contracts and variable universal life insurance policies issued by Fortis
Benefits Insurance Company ("FBIC") and/or First Fortis Life Insurance Company
("First Fortis");

     WHEREAS, the Manager desires to retain the Sub-Adviser to assist the
Manager in furnishing an investment program to one series of the Company, the
Large Cap Growth Series (the "Portfolio");

     NOW, THEREFORE, in consideration of the mutual agreements herein made, the
Manager and the Sub-Adviser agree as follows:

     1.   APPOINTMENT AND EXPENSES OF THE SUB-ADVISER.  The Manager hereby
appoints the Sub-Adviser to serve as sub-adviser with respect to the assets of
the Portfolio and to perform the services hereinafter set forth and the
Sub-Adviser hereby accepts such appointment.  The Sub-Adviser agrees, for the
compensation herein provided, to assume all obligations herein provided and bear
all its personnel and other expenses associated with the performance of its
services hereunder.  The Company shall be responsible for the Portfolio's
administrative and other direct expenses, including, but not limited to: 
(a) fees pursuant to any plan of distribution that the Portfolio may adopt;
(b) the Portfolio's brokerage and commission expenses, including all ordinary
and reasonable transaction costs; (c) fees and expenses of pricing services used
by the Company to determine the value of the Portfolio's holdings; (d) Federal,
state, local and foreign taxes, including issue and transfer taxes incurred by
or levied on the Portfolio; (e) interest charges on any Portfolio borrowings;
(f) the Company's organizational and offering expenses; (g) the cost of the
Company's personnel providing services to the Company; (h) fees and expenses of
registering the Company's shares under the appropriate Federal securities laws
and of qualifying the Company's shares under applicable state securities laws
and pursuant to any foreign laws; (i) expenses of printing and distributing
reports to the Company's shareholders, proxy materials, prospectuses and
distribution of dividends; (j) costs of the Company's shareholders' meetings and
proxy solicitation; (k) charges and expenses of the Company's custodian and
registrar, transfer agent and dividend disbursing agent; (l) compensation of the


<PAGE>

Company's officers, directors and employees that are not "affiliated persons" or
"interested persons" [as defined in Section 2(a) of the 1940 Act and the rules,
regulations and releases relating thereto] of the Sub-Adviser; (m) the Company's
legal and auditing expenses; (n) cost of certificates representing shares of the
Portfolio; (o) the Company's costs of stationery and supplies; (p) the Company's
insurance expenses; (q) the Company's association membership dues; (r) travel
expenses of officers and employees of the Sub-Adviser to the extent such
expenses relate to the attendance of such persons at meetings at the request of
the Board of Directors of the Company (EXCEPT that a representative of the
Sub-Adviser will attend one Board meeting per year, at the Sub-Adviser's own
expense); and (s) travel expenses for attendance at Board of Directors meetings
by members of the Board of Directors of the Company who are not "interested
persons" or "affiliated persons" of the Sub-Adviser.  The Sub-Adviser shall for
all purposes herein be deemed to be an independent contractor and shall, except
as expressly provided or authorized (whether herein or otherwise), have no
authority to act for or on behalf of the Company in any way or otherwise be
deemed an agent of the Company.

     2.   DUTIES OF THE SUB-ADVISER.  The Sub-Adviser will deal in good faith
and with due diligence and will use professional skill, care and judgment in the
performance of its duties under this Agreement.  In so doing, the Sub-Adviser
shall formulate and implement a continuing program for the management of the
assets of the Portfolio.  The Sub-Adviser shall amend and update such program
from time to time as financial and other economic conditions warrant.  The
Sub-Adviser shall make all determinations with respect to the investment of the
assets of the Portfolio and shall take such steps as may be necessary to
implement the same, including the placement of purchase and sale orders on
behalf of the Portfolio.  The Manager shall be responsible for the
administration of the investment activities of the Company and the Portfolio,
including compliance with the requirements of the 1940 Act, except for the
investment management activities specifically delegated to the Sub-Adviser
pursuant to this Agreement.

     3.   POWERS OF THE SUB-ADVISER.

          3.1  The Sub-Adviser's power to direct the investment and reinvestment
of the assets of the Portfolio shall be exercised in accordance with applicable
law, the Company's Articles of Incorporation and the investment objectives,
policies and restrictions set forth in the then-current Prospectus and Statement
of Additional Information (collectively the "Prospectus") relating to the
Portfolio contained in the Company's Registration Statement under the 1940 Act
and the Securities Act of 1933, as amended.  The Company and/or the Manager may
also place additional limitations on the Sub-Adviser's investment decisions by
written notice to the Sub-Adviser.  The Company agrees to provide promptly to
the Sub-Adviser a copy of the documents mentioned above and all changes made to
such documents.


                                         -2-
<PAGE>

          3.2  While the Sub-Adviser will have day-to-day responsibility for the
discretionary investment decisions to be made on behalf of the Portfolio, the
Sub-Adviser will be subject to oversight by the Manager.  Such oversight,
however, shall not require prior approval of discretionary investment decisions
made by the Sub-Adviser except as may be required by applicable law, the
Portfolio's investment policies and restrictions and/or any limitations imposed
on the Sub-Adviser by the Company and/or the Manager pursuant to the preceding
paragraph.  The Manager shall retain the right to instruct the Sub-Adviser to
effect any transactions necessary to ensure compliance with the Portfolio's
investment policies and restrictions as well as the requirements of Subchapter M
of the Internal Revenue Code and the provisions of Section 817(h) of the
Internal Revenue Code and the regulations promulgated thereunder.

          3.3  In the event the Sub-Adviser's compliance with any amendment of
the Portfolio's investment objectives, policies and restrictions or other
limitations placed on the Sub-Adviser's investment decisions with respect to the
Portfolio would interfere with the completion of any transaction commenced on
behalf of the Portfolio prior to the Sub-Adviser's knowledge of such amendment,
the Sub-Adviser may complete such transaction unless doing so would violate any
applicable law, rule or regulation.  In such an event, the Sub-Adviser will not
be responsible for any loss that may result from the completion of the
transaction.

          3.4  Further, and except as may be qualified elsewhere in this
Agreement, the Sub-Adviser is hereby authorized, for and on behalf of the
Company, with respect to the Portfolio, in its discretion to:

               (a)  exercise any conversion and/or subscription rights available
     in connection with any securities or other investments held in the
     Portfolio;

               (b)  maintain all or part of the Portfolio's assets uninvested in
     short-term income-producing instruments for such periods of time as shall
     be deemed reasonable and prudent by the Sub-Adviser;

               (c)  instruct the Custodian, in accordance with the Custodian
     Agreement, to deliver for cash received, securities or other cash and/or
     securities instruments sold, exchanged, redeemed or otherwise disposed of
     from the Portfolio, and to pay cash for securities or other cash and/or
     securities instruments delivered to the Custodian and/or credited to the
     Portfolio upon acquisition of the same for the Portfolio;

               (d)  determine how to vote all proxies received with respect to
     securities held in the Portfolio and direct the Custodian as to the voting
     of such proxies; and


                                         -3-
<PAGE>

               (e)  generally, perform any other act necessary to enable the
     Sub-Adviser to carry out its obligations under this Agreement.   

     4.   SELECTION OF BROKER-DEALERS.  The Sub-Adviser shall select the brokers
and dealers through whom transactions on behalf of the Portfolio will be
executed and the markets on or in which such transactions will be executed and
shall place, in the name of the Portfolio or its nominee (or appropriate foreign
equivalent), all such orders.  In selecting brokers and dealers to execute such
transactions, and in negotiating brokerage commissions, and in obtaining
research, statistical and other information from brokers and dealers in
connection with Portfolio transactions, the Sub-Adviser shall comply with the
description of the process contained in the Prospectus.

          (a)  It is understood that certain other clients (including other
     funds, portfolios and accounts) of the Sub-Adviser may have investment
     objectives and policies similar to those of the Portfolio and that the
     Sub-Adviser may, from time to time, make recommendations that result in the
     purchase (or sale) of a particular security by its other clients and the
     Portfolio during the same period of time.  If transactions on behalf of
     more than one client during the same period increase the demand for
     securities being purchased or the supply of securities being sold, there
     may be an adverse effect on price or quantity.  In such event, the
     Sub-Adviser shall allocate the securities or investments to be purchased or
     sold, as well as the expenses incurred in the transactions (including
     price) in a manner the Sub-Adviser considers equitable and consistent with
     its obligations to the Portfolio and the Sub-Adviser's other clients.

          (b)  The Sub-Adviser agrees that it will only enter into transactions
     that are covered by Section 10(f) or Section 17(e) of the 1940 Act if it
     has (i) complied with Rule 10f-3 or Rule 17e-1 thereunder, respectively, or
     the terms of an appropriate exemptive order issued to the Company by the
     SEC, and (ii) has complied with the procedures adopted thereunder by the
     Board of Directors of the Company which may, pursuant to authority granted
     by the Company, be supplemented by interpretive guidelines of the Manager. 
     Aside from parties that are known or should be known by the Sub-Adviser,
     the Manager shall promptly notify the Sub-Adviser of any additional parties
     with whom engaging in a transaction for the Portfolio would result in a
     violation of the 1940 Act.

     5.   REPORTS AND INFORMATION TO BE PROVIDED BY THE SUB-ADVISER.  The
Sub-Adviser shall furnish such information and reports relating to the
Portfolio, its holdings and transactions involving Portfolio securities as the
Manager and/or the Company may reasonably require to fulfill its or their legal
responsibilities or to meet regulatory requirements or discharge other duties
they may have.  Among the subjects of the reports and information to be provided
by the Sub-Adviser are the following:


                                         -4-
<PAGE>

          (a)  Information required by the Manager to determine the Company's
     and Portfolio's compliance with the 1940 Act, the Advisers Act, the
     Internal Revenue Code, applicable federal and state securities and
     insurance laws and other applicable laws and regulations or regulatory and
     taxing authorities in the United States and other relevant countries;

          (b)  Information required by the Manager to meet the accounting and
     operational requirements of the Portfolio.  Specific examples of the types
     of reports and information that will be needed by the Manager and the
     Company are set forth in Exhibit A, attached hereto;

          (c)  Information required by the Manager to satisfy its reporting
     obligations to the Company arising from the Investment Advisory and
     Management Agreement between the Manager and the Company;

          (d)  Information reasonably requested by the Manager to determine the
     Portfolio's compliance with Rule 17f-5 under the 1940 Act, relating to
     foreign custodians and sub-custodians;

          (e)  Information required by the Manager to determine the
     Sub-Adviser's compliance with Rule 17j-1 under the 1940 Act with respect to
     the Sub-Adviser's activities on behalf of the Portfolio;

          (f)  Information required by the Manager to determine compliance with
     Rule 10f-3 and Rule 17e-1 under the 1940 Act with respect to the
     Sub-Adviser's (or its affiliates') activities on behalf of the Portfolio;
     and

          (g)  Information reasonably necessary to respond to specific inquiries
     from the Company's management and/or Board of Directors.    

     6.   NON-EXCLUSIVE SERVICES, CONFLICTS OF INTEREST AND MATERIAL NONPUBLIC
INFORMATION.  The Manager understands that the Sub-Adviser and its affiliates
may furnish investment management and advisory services to others, and that the
Sub-Adviser and its affiliates shall be at all times free, in their discretion,
to make recommendations to, and investments for, others which may or may not
correspond to investments made for the Portfolio.  The Manager further
understands that the Sub-Adviser, its affiliates, and any officer, director,
stockholder, employee or any member of their families may or may not have an
interest in the securities whose purchase and sale the Sub-Adviser effects for
the Portfolio.  Actions taken by the Sub-Adviser on behalf of the Portfolio may
be the same as, or different from, actions taken by the Sub-Adviser on its own
behalf or for others or from actions taken by the Sub-Adviser's affiliates,
officers, directors, partners, employees of the Sub-Adviser or its affiliates,
or the family members of such persons or other investors.  The Sub-Adviser
represents that it has in effect a code of ethics that complies with Rule 17j-1
under the 1940 Act and has procedures in place that, taken together, provide
reasonable enforcement of the code's provisions.  Similarly, the


                                         -5-
<PAGE>

Sub-Adviser represents that, with respect to the use of nonmaterial nonpublic
information, it has complied, and will continue to comply, with Section 204A of
the Investment Advisers Act of 1940, as amended ("Advisers Act") and any rules
thereunder.

     7.   DISCLOSURE OF INFORMATION AND CONFIDENTIALITY.

          7.1  The Sub-Adviser, the Company and the Manager, either during or
after the termination of this Agreement, are authorized with respect to matters
arising out of this Agreement to make any disclosures and/or participate in any
conduct required by any applicable law, rule, regulation, self-regulating
organization, investment exchange or any other body having regulatory or
enforcement responsibility with respect to any investment business conducted by
the Sub-Adviser on behalf of the Portfolio.

          7.2  Subject to the preceding paragraph, the Sub-Adviser agrees that
all information which has or will come into its possession or knowledge
concerning the Portfolio or its investments in connection with this Agreement
shall be held by the Sub-Adviser in confidence.  The Sub-Adviser shall make no
use of such information other than for the performance of this Agreement, shall
disclose such information only to the directors, officers or employees of the
Sub-Adviser or its affiliated firms or of any third party appointed pursuant to
this Agreement requiring such information and shall not disclose such
information to any other person without the written consent of the Company;
provided, however, that to the extent the investments for the Portfolio are
similar to investments for other clients of the Sub-Adviser, the Sub-Adviser may
disclose such investments without direct reference to the Portfolio.  The
Sub-Adviser may also include the name of the Portfolio in a representative
client list.

          7.3  Subject to the preceding paragraph, the Company and the Manager
agree that all information which has or will come into their possession or
knowledge concerning the operations and procedures of the Sub-Adviser shall be
held by the Company and the Manager in confidence.  The Company and the Manager
shall make no use of such information other than for the performance of this
Agreement, shall disclose such information only to their directors, officers or
employees or those of its affiliated firms and shall not disclose such
information to any other person without the written consent of the Sub-Adviser.

          7.4  The Manager and the Company agree not to refer to Alliance
Capital Management L.P. or its affiliates in any advertisement or other document
without prior consent of the Sub-Adviser.  Similarly, Alliance Capital
Management L.P. and its affiliates shall not refer to the Manager, the Company,
the Portfolio, or other Fortis affiliates in any advertisement or other document
without the Manager's prior consent.  However, the Parties to this Agreement
agree that they may reference one another as necessary in regulatory and other
legal filings.  Further, the parties agree that they will not unreasonably
withhold permission to


                                         -6-
<PAGE>

use their names or otherwise reference them in materials used to describe the
Portfolio and/or the Company. 

     8.   DEALINGS WITH THE CUSTODIAN.  The Manager shall notify the Sub-Adviser
of the appointment of the custodian(s) ("Custodian") for all or any portion of
the Portfolio's assets, shall provide the Sub-Adviser with a true and complete
copy of each agreement with the Custodian that deals with the Portfolio's assets
("Custodian Agreements"), and shall provide the Sub-Adviser with the names of
persons authorized to act on behalf of the Custodian and such other information
as the Sub-Adviser shall reasonably require.  The Sub-Adviser agrees to give
instructions in accordance with the terms of the applicable Custodian
Agreements.  The Company agrees to provide promptly to the Sub-Adviser a copy of
all relevant Custodian Agreements, and all changes made to such documents.

     9.   DELEGATION OF THE SUB-ADVISER'S RESPONSIBILITIES.  The Sub-Adviser may
not delegate its investment advisory responsibilities as Sub-Adviser to the
Portfolio.  However, the Sub-Adviser may employ, retain or otherwise avail
itself of the services and facilities of persons and entities within its own
organization or any other organization for the purpose of providing the
Sub-Adviser, the Manager or the Portfolio with such information, advice or
assistance, including but not limited to advice regarding economic factors and
trends and advice as to transactions in specific securities, as the Sub-Adviser
may deem necessary, appropriate or convenient for the discharge of its
obligations hereunder or as may otherwise be helpful to the Manager or the
Portfolio, or in the discharge of the Sub-Adviser's overall responsibilities
with respect to the other accounts for which it serves as investment manager or
investment adviser.  The Sub-Adviser's acquisition of information, advice or
assistance pursuant to this paragraph shall be at the Sub-Adviser's own expense
and shall not relieve the Sub-Adviser of any of its obligations under this
Agreement.

     10.  COMPENSATION.  For the services to be rendered under this Agreement
and the facilities to be furnished, the Manager shall pay to the Sub-Adviser for
each fiscal year of the Company, a monthly management fee at the annual rate of
 .50 of 1% of the Portfolio's first $100 million of average daily net assets; .45
of 1% of the Portfolio's next $100 million of average daily net assets; and .40
of 1% of the Portfolio's average daily net assets in excess of $200 million. 
The monthly management fee shall be paid to the Sub-Adviser not later than the
tenth business day of the month following the month in which such services were
rendered and shall be based upon the average net asset values of all the issued
and outstanding shares of the Portfolio as determined as of the close of each
business day of the month pursuant to the Articles of Incorporation, Bylaws and
currently effective Prospectus of the Portfolio.  Payments of the monthly
management fee will be accompanied by documentation that verifies the
calculation of such fee.  If the management of the Portfolio by the Sub-Adviser
commences or terminates at any time other than the beginning or end of a month,
the management fee shall be prorated for that portion of such month during which
this Agreement was in force.


                                         -7-
<PAGE>

     11.  REPRESENTATIONS OF THE SUB-ADVISER.  The Sub-Adviser represents and
agrees that:

          (a)  The Sub-Adviser is registered as an "investment adviser" under
     the Advisers Act and is currently in compliance in all material respects
     and shall at all times continue to comply in all material respects with the
     requirements imposed upon it by the Advisers Act, the 1940 Act, the
     Internal Revenue Code, state securities laws and all applicable rules and
     regulations thereunder as they relate to the services provided under this
     Agreement.  The Sub-Adviser will immediately notify the Manager if it
     becomes aware of the occurrence of any event that would disqualify the
     Sub-Adviser from serving as an investment adviser of an investment company
     pursuant to Section 9 of the 1940 Act or any other applicable law or
     regulation.

          (b)  The Sub-Adviser will maintain, keep current and accurate, and
     preserve all records with respect to the Portfolio as are required of it
     under the Advisers Act and the 1940 Act, in the manner provided by such
     Acts and the rules thereunder.  The Sub-Adviser agrees that such records
     are the property of the Company, and following termination of this
     Agreement will be surrendered to the Company promptly upon request except
     to the extent that they are required to be retained by the Sub-Adviser
     under applicable law.  Further, such records shall be open to inspection by
     the Company.  The Sub-Adviser will also assure that the Company will have
     the same access as the Sub-Adviser has to records relating to the Portfolio
     that are held by relevant third parties.  Such inspections will be at
     reasonable times during business hours and only upon reasonable notice of
     the Company's desire to make an inspection.

          (c)  The Sub-Adviser agrees to advise the Manager of any developments,
     such as the reassignment of a portfolio manager, that would require
     Prospectus disclosure and to provide any necessary information related to
     such developments.

          (d)  The Sub-Adviser has provided the Manager and the Company with a
     copy of its most recent and complete Form ADV and will promptly furnish
     them with copies of any material amendments to the Form.         

          (e)  If the Sub-Adviser's performance of its obligations under this
     Agreement takes place in the United Kingdom, the Sub-Adviser shall be and
     shall remain during the effectiveness of this Agreement, a member of the
     Investment Management Regulatory Organization, Ltd. ("IMRO") and thereby
     regulated in the conduct of Investment Business (as defined in IMRO's
     rules) by the IMRO.  The Company and the Manager will be treated as a
     Non-Private Customer (as defined in IMRO's rules) of the Sub-Adviser.


                                         -8-
<PAGE>

          (f)  The Sub-Adviser shall furnish the Manager with a certificate,
     signed by a duly authorized officer of the Sub-Adviser that designates the
     officers or employees of the Sub-Adviser having authority to act for and on
     behalf of the Sub-Adviser in connection with this Agreement.  The
     Sub-Adviser agrees that, until such time as the Manager is otherwise
     informed in writing by a duly authorized officer of the Sub-Adviser, the
     Manager shall be authorized and entitled to rely on any notice,
     instruction, request, order or other communication, given either in writing
     or orally, and reasonably believed by the Manager in good faith to be given
     by an authorized representative of the Sub-Adviser.

          (g)  The Sub-Adviser agrees to notify the Manager of any changes in
     the membership of the general partners of the Sub-Adviser within a
     reasonable time after such change. 

     12.  REPRESENTATIONS OF THE MANAGER.  The Manager represents and agrees
that:

          (a)  The Manager is registered as an "investment adviser" under the
     Advisers Act and has provided to the Sub-Adviser a copy of its most recent
     and complete Form ADV, along with a copy of the Investment Advisory and
     Management Agreement between the Manager and the Company and the current
     Company Prospectus regarding the Portfolio.  After any amendment to the
     documents referenced in this paragraph, the Manager will promptly furnish a
     copy of such amended document to the Sub-Adviser.  In addition, the Manager
     will provide the Sub-Adviser with notice of proposed changes in the
     Prospectus and the opportunity to review and comment upon such changes
     before they are finalized, wherever possible.

          (b)  The Manager and the Company are currently in material compliance
     and shall at all times continue to be in material compliance with the
     relevant requirements of the Advisers Act, the 1940 Act, all applicable
     state securities and insurance laws, and the rules thereunder, as they
     pertain to the Portfolio.

          (c)  The Manager shall furnish the Sub-Adviser with a certificate,
     signed by a duly authorized officer of the Manager that designates the
     officers or employees of the Manager having authority to act for and on
     behalf of the Manager in connection with this Agreement.  The Manager
     agrees that, until such time as the Sub-Adviser is otherwise informed in
     writing by a duly authorized officer of the Manager, the Sub-Adviser shall
     be authorized and entitled to rely on any notice, instruction, request,
     order or other communication, given either in writing or orally, and
     reasonably believed by the Sub-Adviser in good faith to be given by an
     authorized representative of the Manager.


                                         -9-
<PAGE>

          (d)  The Manager will maintain, keep current and accurate and preserve
     all records with respect to the Portfolio as are required of it under the
     Advisers Act and 1940 Act and the rules and regulations promulgated
     thereunder with respect to transactions by the Sub-Adviser on behalf of the
     Portfolio.  In compliance with Rule 31a-3 under the 1940 Act, the
     Sub-Adviser hereby agrees that all records which it maintains for the
     Portfolio are the property of the Company, agrees to preserve for the
     persons prescribed by Rule 31a-2 under the Act any records which it
     maintains for the Portfolio and which are required to be maintained by Rule
     31a-1(b) (2(iii), (5), (6), (7), (9) and (10) under the 1940 Act, and
     further agrees to surrender promptly to the Company any records which it
     maintains for the Portfolio upon request by the Company.

     13.  LIABILITY, INDEMNIFICATION AND FORCE MAJEURE.

          13.1 The Sub-Adviser, its affiliated firms or its or their employees,
officers, or directors will not be liable for any error of judgment or mistake
of law or for any loss suffered by the Portfolio, its shareholders, FBIC
contract owners or First Fortis contract owners in connection with the
performance of their duties under this Agreement, except for loss resulting from
willful misfeasance, bad faith or negligence on their part in the performance of
their duties or from reckless disregard by them of their duties under this
Agreement.

          13.2 The Manager shall indemnify the Sub-Adviser against all claims
which may be made against the Sub-Adviser in connection with the exercise of the
powers and discretions conferred upon it pursuant to this Agreement, EXCEPT
insofar as such claims allege or are the result of the willful misfeasance, bad
faith or negligence of the Sub-Adviser or any of its affiliated firms or its or
their employees, officers or directors or its or their breach of this Agreement
or violation of applicable law.  Conversely, the Sub-Adviser shall indemnify the
Manager and the Company against all claims alleging or resulting from the
willful misfeasance, bad faith or negligence of the Sub-Adviser or any of its
affiliated firms or its or their employees, officers or directors or its or
their breach of this Agreement or violation of applicable law.

          13.3 Neither party shall be held responsible for their non-performance
of any of their obligations under this Agreement by reason of any cause beyond
their control, including any breakdown or failure of transmission, communication
or computer facilities, postal or other strikes or similar industrial action and
the failure of any relevant exchange, clearing house and/or broker for any
reason to perform its obligations.

     14.  TERM, RENEWAL AND TERMINATION.

          14.1 This Agreement shall, with respect to the Portfolio, become
effective as of the date first above written and shall remain in force for two
years


                                         -10-
<PAGE>

thereafter, and for successive annual periods thereafter but only so long as
each such continuance is specifically approved at least annually by (1) a
majority of the Directors of the Company who are not parties to this Agreement
or interested persons of any such parties (other than as Directors of the
Company), by vote cast in person at a meeting called for the purpose of voting
on such approval; or (2) a vote of the holders of a majority of the outstanding
voting securities (as defined in the 1940 Act) of such Portfolio.  It shall be
the duty of the Directors of the Company to request and evaluate, and the duty
of the Manager and Sub-Adviser to furnish, such information as may be reasonably
necessary to evaluate the terms of this Agreement and any renewal hereof.

          14.2 This Agreement may be terminated with respect to the Portfolio at
any time without the payment of any penalty by the Portfolio (1) by a vote of a
majority of the entire Board of Directors of the Company on sixty (60) days'
written notice to the Manager and the Sub-Adviser; (2) by vote of the holders of
a majority of the outstanding voting securities of such Portfolio (as defined in
the 1940 Act); or (3) by the Sub-Adviser on 60 days' written notice to the
Manager and the Company.

          14.3 This Agreement shall automatically terminate in the event of its
assignment, as that term is defined in Section 2(a)(4) of the 1940 Act and the
rules thereunder.

          14.4 On the effective date of any termination of this Agreement or as
close to such date as is reasonably possible, the Sub-Adviser shall provide the
Manager with a final report for the Portfolio which will include the fair market
value for each of the Portfolio's investments.

          14.5 Upon the Manager's receipt or service of any notice given by or
to the Company concerning the termination of the Manager's appointment as the
investment adviser to the Company, the Manager shall immediately forward a copy
of such notice to the Sub-Adviser and the Sub-Adviser's appointment under this
Agreement shall terminate on the same date as the termination of the Manager's
appointment.

     15.  AMENDMENT.  No amendment to or modification of this Agreement shall be
effective unless and until it is set forth in a written amendment signed by the
Manager and the Sub-Adviser and approved by the vote of a majority of the
outstanding shares of the Portfolio, as defined in the 1940 Act.

     16.  AUTHORITY AND ENFORCEABILITY.

          16.1 Each of the parties to this Agreement hereby represents that it
is duly authorized and empowered to execute, deliver, and perform this Agreement
and that such actions do not conflict with or violate any provision of law,
rule, regulation, other legal requirement, contract or other instrument to which
it is a party or to which it is subject and that this Agreement constitutes a
valid and


                                         -11-
<PAGE>

binding obligation, inuring to the benefit of the Manager and the Sub-Adviser
and their respective successors, enforceable in accordance with its terms.

          16.2 If any provision of this Agreement shall be held or made invalid
or unenforceable by a court decision, statute, rule or otherwise, the remainder
of this Agreement shall not be affected thereby and any such invalid or
unenforceable provision shall be deemed to be replaced with a valid and
enforceable provision that most closely reflects the intention of the parties.

     17.  APPLICABLE LAW.  To the extent that state law is not preempted by the
provisions of any law of the United States heretofore or hereafter enacted, as
the same may be amended from time to time, this Agreement shall be administered,
construed and enforced according to the laws of the State of Minnesota.

     18.  NOTICES.  All notices hereunder shall be in writing and shall be
delivered in person or by facsimile (followed by delivery in person) to the
parties at the addresses set forth below:

     If to the Manager:            Fortis Advisers, Inc.
                                   500 Bielenberg Drive
                                   St. Paul, MN 55125
                                   Fax #: (612) 738-5262
                                   Attn: Legal Department

     If to the Sub-Adviser:        Mark R. Manley
                                   Alliance Capital Management L.P.
                                   1345 Avenue of the Americas
                                   New York, New York 10105
                                   Fax #: (212) 969-2293
                                   Copy to: James Reilly

or such other name or address as may be given in writing to the other party.

     Unless specifically provided elsewhere, notice given as provided above
shall be deemed to have been given, if by personal delivery, on the day of such
delivery, and if by facsimile and mail, on the date on which such facsimile is
sent.

     19.  EXECUTION.  This Agreement may be executed in two or more
counterparts, each of which shall be deemed to be an original, but all of which
together shall constitute one and the same instrument.


                                         -12-
<PAGE>

     IN WITNESS WHEREOF, the parties hereto have caused this instrument to be
executed by their duly authorized officers.


Attest:                                  FORTIS ADVISERS, INC.


/s/ John E. Hite                         By: /s/ Scott R. Plummer        
- ---------------------------                  --------------------------
John E. Hite                                 Scott R. Plummer
Assistant Secretary                          Vice President


Attest:                                  ALLIANCE CAPITAL MANAGEMENT L.P.
                                         By: Alliance Capital Management Corp.,
                                             General Partner


/s/ Colin T. Burke                       By: /s/ Mark R. Manley          
- ---------------------------                  --------------------------
Colin T. Burke                               Mark R. Manley
Vice President                               Assistant Secretary


                                         -13-
<PAGE>

                                      EXHIBIT A



                  EXAMPLES OF THE ROUTINE ACCOUNTING AND OPERATIONAL
                  INFORMATION AND DOCUMENTATION REQUIREMENTS OF THE
                     PORTFOLIO TO BE SATISFIED BY THE SUB-ADVISER

                   The following information is to be provided to:

                               Fortis Series Fund, Inc.
                                ATTN: Fund Accounting
                                    P.O. Box 64284
                                 St. Paul, MN  55164
                                 FAX: (612) 738-0996
                          PHONE: (612) 738-4568, 5517 or 5606

     1.   DOCUMENTATION OF TRADES.  On a daily basis, via facsimile, a listing
of that day's executed trades and copies of the trade tickets for those trades. 
At the end of each week, by mail, hard copies of documentation for that week's
executed trades. The signature or initials of the portfolio manager or duly
authorized officer or employee of the Sub-Adviser should be placed on the trade
tickets to validate the authenticity of the trading information.  On a weekly
basis, with respect to trades for which no DTC affirmation is available, hard
copies of broker confirmations for such trades.

     2.   PORTFOLIO HOLDINGS.  On a weekly basis, via facsimile and mail, a list
of the Portfolio's holdings.  The list should include the following information,
for each of the Portfolio's holdings, where applicable: long description,
cusip/sedol number, maturity date, par/principal amounts, market value, market
price, coupon rate and bond rating.

     3.   SECURITY PRICING.  On a daily basis, by telephone or facsimile: 
(i) review with the Company's Fund Accounting Department (the "Department") the
prices of the Portfolio's securities, which shall be provided by the Department;
(ii) inform the Department of its agreement or disagreement with such prices;
(iii) provide the Department with the basis for any disagreement it may have
with respect to a particular security's price and its opinion (along with
outside broker quotes) as to what that security's price should be; and (iv) in
any instance where the pricing services utilized by the Department do not
provide a price for a security held by the Portfolio, provide the Department
with reasonable assistance in determining a price for such security.


                                         A-1

<PAGE>
                               SUB-MANAGEMENT AGREEMENT


          This AGREEMENT made as of this 2nd day of April, 1998, between BERGER
ASSOCIATES, INC., a Delaware corporation ("Berger") and PERKINS, WOLF, MCDONNELL
& COMPANY, a Delaware corporation ("PWM").  

          WHEREAS, Berger has entered into an Investment Sub-Advisory Agreement
(the "Subadvisory Agreement") with Fortis Advisers, Inc. (the "Manager") with
respect to the Small Cap Value Series (the "Portfolio") of Fortis Series Fund,
Inc. (the "Company"); and 

          WHEREAS, PWM is engaged in the business of rendering investment
advisory services and is registered as an investment advisor under the
Investment Advisers Act of 1940, as amended (the "Advisers Act"); and 

          WHEREAS, Berger desires to delegate to PWM its duties and
responsibilities for providing investment advisory services to the Portfolio,
and PWM is willing to accept such delegation and to render such investment
advisory services.

    NOW, THEREFORE, the parties agree as follows:

          1.   DELEGATION.  Pursuant to Section 9 of the Subadvisory Agreement,
a copy of which is attached hereto as Exhibit 1, Berger hereby delegates to PWM
all the duties and responsibilities required to be performed by Berger for the
Portfolio pursuant to Section 2 of the Subadvisory Agreement except the
placement of purchase and sale orders on behalf of the Portfolio.  PWM hereby
accepts such delegation and agrees to perform such duties and assume such
responsibilities, subject to the oversight of Berger.  No provision of this
Agreement shall relieve Berger of its duties or responsibilities under the
Subadvisory Agreement, and Berger shall appropriately oversee, monitor and
evaluate PWM's performance of its duties and responsibilities under this
Agreement.

          2.   FURTHER OBLIGATIONS.  

          (a)  In all matters relating to the performance of this Agreement, PWM
shall act in conformity with the Company's Articles of Incorporation, the
investment objectives, policies and restrictions for the applicable Portfolio
set forth in the Company's then current prospectus and statement of additional
information, such policies as the Company may from time to time establish and
which have been furnished to PWM in writing, the provisions of the Internal
Revenue Code (the Code) applicable to "regulated investment companies" (as
defined in Section 851 of the Code), all as from time to time in effect, and
with all applicable laws governing


                                          1
<PAGE>

such Portfolio's operations and investments including without limitation the
provisions of the Investment Company Act of 1940, as amended (the "1940 Act"),
and rules adopted thereunder and applicable federal and state securities, and
tax laws.  The Company, the Manager and/or Berger may also place additional
limitations on PWM's investment decisions by written notice to PWM.  PWM will be
subject to oversight by Berger and the Manager, provided, however, that such
oversight shall not require prior approval of discretionary investment decisions
made by PWM except as may be required by applicable law, the Portfolio's
investment policies and restrictions and/or any limitations imposed on PWM by
the Company, the Manager and/or Berger as set forth herein.  Berger retains, and
PWM acknowledges that the Manager has, the right to instruct PWM to effect any
transaction necessary to ensure compliance with the Portfolio's investment
policies and restrictions as well as the requirements of Subchapter M of the
Internal Revenue Code and the provisions of Section 817(h) of the Internal
Revenue Code and the regulations promulgated thereunder.  In the event PWM's
compliance with any amendment of the Portfolio's investment objectives, policies
and restrictions or other limitations placed on PWM's investment decisions with
respect to the Portfolio would interfere with the completion of any transaction
commenced on behalf of the Portfolio prior to PWM's knowledge of such amendment,
PWM may complete such transaction unless doing so would violate any applicable
law, rule or regulation and, in such an event, PWM will not be responsible for
any loss that may result from the completion of the transaction.  

          (b)  PWM shall provide timely reports to Berger on its activities
under this Agreement as agreed on from time to time, and shall provide Berger
with all information or documents that Berger may reasonably request in
connection with this Agreement, including but not limited to:  

               (1)  Information required by Berger to satisfy its reporting
obligations to the Manager and/or the Company arising from the Subadvisory
Agreement;

               (2)  Information required to determine PWM's compliance with Rule
17j-1 under the 1940 Act with respect to PWM's activities on behalf of the
Portfolio;

               (3)  Information required to determine compliance with Rule 10f-3
and Rule 17e-1 under the 1940 Act with respect to PWM's (or its affiliates')
activities on behalf of the Portfolio;

               (4)  Such other information with regard to its affairs as Berger
may reasonably request.  

          (c)  PWM shall maintain, keep current and accurate, and preserve


                                          2
<PAGE>

all books and records with respect to the Portfolio as are required of it under
the Advisers Act and the 1940 Act, in the manner provided by such Acts and the
rules thereunder.  PWM agrees that such records are the property of the Company,
and following termination of this Agreement will be surrendered to the Company
promptly upon request except to the extent that they are required to be retained
by PWM under applicable law.  Further, such records shall be open to inspection
by the Company.  PWM will also assure that the Company will have the same access
as PWM has to records relating to the Portfolio that are held by relevant third
parties.  Such inspections will be at reasonable times during business hours and
only upon reasonable notice of the Company's desire to make an inspection.  

          (d)  PWM will at all times comply in all material respects with the
requirements imposed upon it by the Advisers Act, the 1940 Act, the Internal
Revenue Code, state securities laws and all applicable rules and regulations
thereunder as they relate to the services provided under this Agreement.  PWM
will immediately notify Berger if it becomes aware of the occurrence of any
event that would disqualify PWM from serving as an investment adviser of an
investment company pursuant to Section 9 of the 1940 Act or any other applicable
law or regulation.

          (e)  PWM agrees to advise Berger of any developments, such as the
reassignment of a portfolio manager, that would require prospectus disclosure
and to provide any necessary information related to such developments.

          (f)  PWM has provided Berger with a copy of its most recent and
complete Form ADV and will promptly furnish Berger with copies of any material
amendments to such Form ADV.

          (g)  If PWM's performance of its obligations under this Agreement
takes place in the United Kingdom, PWM shall be and shall remain during the
effectiveness of this Agreement, a member of the Investment Management
Regulatory Organization, Ltd. ("IMRO") and thereby regulated in the conduct of
Investment Business (as defined in IMRO's rules) by the IMRO.  The Company and
the Manager will be treated as a Non-Private Customer (as defined in IMRO's
rules) of PWM.

          (h)  PWM shall furnish Berger with a certificate, signed by a duly
authorized officer of PWM that designates the officers or employees of PWM
having authority to act for and on behalf of PWM in connection with this
Agreement.  PWM agrees that, until such time as Berger is otherwise informed in
writing by a duly authorized officer of PWM, Berger shall be authorized and
entitled to rely on any notice, instruction, request, order or other
communication, given either in writing or orally, and reasonably believed by
Berger in good faith to be given by an authorized representative of PWM.


                                          3
<PAGE>

          3.   DISCRETIONARY ACTIONS.

          (a)  PWM is hereby authorized, to the same extent Berger is authorized
pursuant to Section 3.4 of the Subadvisory Agreement, to take the actions set
forth in subsections (a), (b), and (d) of Section 3.4 of the Subadvisory
Agreement, and generally, to perform any other act necessary to enable PWM to
carry out its obligations under this Agreement.

          (b)  PWM may employ, retain or otherwise avail itself of the services
and facilities of persons and entities within its own organization or any other
organization for the purpose of providing PWM, Berger, the Manager or the
Portfolio with such information, advice or assistance, including but not limited
to advice regarding economic factors and trends and advice as to transactions in
specific securities, as PWM may deem necessary, appropriate or convenient for
the discharge of its obligations hereunder or as may otherwise be helpful to
Berger, the Manager or the Portfolio, or in the discharge of PWM's overall
responsibilities with respect to the other accounts for which it serves as an
investment manager or investment adviser.  PWM's acquisition of information,
advice or assistance pursuant to this subsection shall be at PWM's own expense
and shall not relieve PWM of any of its obligations under this Agreement.

          4.   DISCLOSURE OF INFORMATION AND CONFIDENTIALITY.

          (a)  PWM, either during, or after the termination of, this Agreement,
is authorized with respect to matters arising out of this Agreement to make any
disclosures and/or participate in any conduct required by any applicable law,
rule, regulation, self-regulating organization, investment exchange or any other
body having regulatory or enforcement responsibility with respect to any
investment business conducted by PWM on behalf of the Portfolio.

          (b)  Subject to Section 4(a), PWM agrees that all information which
has or will come into its possession or knowledge concerning the Portfolio or
its investments in connection with this Agreement shall be held by PWM in
confidence.  PWM shall make no use of such information other than for the
performance of this Agreement, shall disclose such information only to the
directors, officers or employees of PWM or its affiliated firms or Berger or of
any third party appointed pursuant to this Agreement requiring such information
and shall not disclose such information to any other person without the written
consent of the Company; provided, however, that to the extent the investments
for the Portfolio are similar to investments for other clients of PWM, PWM may
disclose such investments without direct reference to the Portfolio.  PWM may
also include the name of the Portfolio in a representative client list.

          (c)  PWM agrees that it shall not and its affiliates shall not refer
to


                                          4
<PAGE>

the Manager, the Company, the Portfolio, or other Fortis affiliates in any
advertisement or other document without the Manager's prior consent, except as
may be necessary in regulatory and other legal filings.  PWM agrees that it will
not unreasonably withhold permission to use its name or otherwise reference PWM
in materials used to describe the Portfolio and/or the Company.

          5.   COMPENSATION.  Berger shall pay to PWM for its services under
this Agreement a fee, payable in United States dollars, at an annual rate of .25
of 1% (25 basis points) of the Portfolio's first $50 million of average daily
net assets and .225 of 1% (22 1/2 basis points) of the Portfolio's average daily
net assets in excess of $50 million.  This fee shall be computed based upon the
average net asset values of all the issued and outstanding shares of the
Portfolio as determined as of the close of each business day of the month
pursuant to the Articles of Incorporation, Bylaws and currently effective
prospectus of the Portfolio, and shall be payable monthly as soon as practicable
after the end of each month.  For the month during which this Agreement becomes
effective and the month during which it terminates, however, there shall be an
appropriate proration of the fee payable for such month based on the number of
calendar days of such month during which this Agreement is effective. 

          6.   EXPENSES AND EXCLUDED EXPENSES.  PWM shall pay all its own costs
and expenses incurred in rendering the services required under this Agreement,
including without limitation, the costs of a representative of PWM to attend one
meeting per year of the Board of Directors of the Company.  Notwithstanding any
other provision hereof, it is expressly agreed that PWM shall not be responsible
to pay any organizational, operational or business expenses of Berger or the
Company including, without limitation, brokerage commissions and other costs in
connection with the purchase or sale of securities or other investment
instruments with respect to the Portfolio.  

          7.   TERM, RENEWAL AND TERMINATION.  This Agreement shall continue in
full force and effect with respect to the Portfolio until two years from the
date hereof, and from year to year thereafter so long as such continuance is
specifically approved at least annually (i) by the vote of a majority of those
directors of the Company who are not parties to this Agreement or interested
persons of any such party, cast in person at a meeting called for the purpose of
voting on such approval, and (ii) by the directors of the Company or by vote of
a majority of the outstanding voting securities of the Portfolio voting
separately from any other series of the Company.

          With respect to the Portfolio, this Agreement may be terminated at any
time, without penalty, by vote of a majority of the directors of the Company, or
by Berger, on not less than 60 days' written notice to PWM, or by vote of a
majority of the outstanding voting securities (as defined in the 1940 Act) of
the Portfolio, voting


                                          5
<PAGE>

separately from any other series of the Company.  This Agreement may be
terminated by PWM at any time, without the payment of any penalty, on 90 days'
written notice to Berger.  This Agreement shall automatically terminate in the
event of its assignment (as defined by the 1940 Act).  This Agreement will also
terminate in the event that the Subadvisory Agreement by and between Berger and
the Manager is terminated.  On the effective date of any termination of this
Agreement or as close to such date as is reasonably possible, PWM shall provide
Berger with a final report for the Portfolio.

          8.   LIMIT OF LIABILITY; INDEMNIFICATION.  

          (a)  None of PWM, its employees, officers, or directors will be liable
for any error of judgment or mistake of law or for any loss suffered by the
Company, the Manager, the Portfolio, its shareholders, Fortis Benefits Insurance
Company contract owners or First Fortis Life Insurance Company contract owners
in connection with the performance of their duties under this Agreement, except
for loss resulting from willful misfeasance, bad faith or gross negligence on
their part in the performance of their duties or from reckless disregard by them
of their duties under this Agreement.

          (b)  Berger shall indemnify PWM against all claims which may be made
against PWM in connection with the exercise of the powers and discretion
conferred upon it pursuant to this Agreement, except insofar as such claims are
the result of the willful misfeasance, bad faith or gross negligence of PWM or
any of its employees, officers or directors or its or their material breach of
this Agreement or violation of applicable law.  PWM shall indemnify Berger
against all claims resulting from the willful misfeasance, bad faith or gross
negligence of PWM or any of its employees, officers or directors or its or their
material breach of this Agreement or violation of applicable law.

          (c)  Neither party shall be held responsible for their non-performance
of any of their obligations under this Agreement by reason of any cause beyond
their control, including any breakdown or failure of transmission, communication
or computer facilities, postal or other strikes or similar industrial action and
the failure of any relevant exchange, clearing house and/or broker for any
reason to perform its obligations.

          9.   ACTIVITIES OF PWM.  The investment advisory services provided by
PWM hereunder are not exclusive, and PWM is free to render similar services to
others so long as its services under this Agreement are not materially adversely
affected or otherwise impaired thereby.  Nothing in this Agreement shall limit
or restrict the right of any director, officer, or employee of PWM to engage in
any other business or to devote his or her time and attention in part to the
management or other aspects of any business, whether of a similar nature or a
dissimilar nature.


                                          6
<PAGE>

          10.  INDEPENDENT CONTRACTOR.  PWM shall for all purposes hereunder be
deemed to be an independent contractor and shall, unless otherwise provided or
authorized, have no authority to act for or represent Berger, the Manager, the
Portfolio or the Company in any way, nor otherwise be deemed an agent of,
partner or joint venturer with, Berger, the Portfolio or the Company.  

          11.  PERMISSIBLE INTERESTS.  It is understood that directors, officers
and shareholders of the Company are or may become interested in PWM as
directors, officers and shareholders of PWM, that directors, officers, employees
and shareholders of PWM are or may become similarly interested in the Company,
and that PWM may become interested in the Company as a shareholder or otherwise.

          12.  NOTICES.  Any notice or other communication required to be given
pursuant to this Agreement shall be deemed duly given if delivered or mailed by
certified or registered mail, return receipt requested and postage prepaid:

               (a)  To Berger at: 
     
                    Berger Associates, Inc.
                    210 University Boulevard
                    Denver, Colorado  80206
                    Attention:  Kevin R. Fay 

               (b)  To PWM at:

                    Perkins, Wolf, McDonnell & Company
                    53 W. Jackson Boulevard
                    Suite 818
                    Chicago, Illinois  60604
                    Attention:  President

               13.  AMENDMENTS.  This Agreement may be amended by the parties
only in a written instrument signed by the parties to this Agreement and only if
such amendment, if so required, is approved by vote of a majority of the
outstanding voting securities of the Portfolio voting separately from any other
series of the Company.

               14.  GOVERNING LAW.  This Agreement shall be construed in
accordance with the laws of the State of Colorado (without giving effect to the
conflicts of laws principles thereof) and the 1940 Act.  To the extent that the
applicable laws of the State of Colorado conflict with the applicable provisions
of the 1940 Act, the latter shall control.


                                          7
<PAGE>

               15.  MISCELLANEOUS.  This Agreement may be executed in two or
more counterparts, which taken together shall constitute one and the same
instrument.  The headings in this Agreement are included for convenience of
reference only and in no way define or limit any of the provisions thereof or
otherwise affect their construction or effect.  If any provision of this
Agreement shall be held or made invalid by a court decision, statute, rule or
otherwise, the remainder of this Agreement shall not be affected thereby.  This
Agreement shall be binding upon and shall inure to the benefit of the parties
hereto and their respective successors.


          IN WITNESS WHEREOF, the parties hereto have caused this instrument to
be executed by their officers designated below as of the day and year first
above written.

                              BERGER ASSOCIATES, INC.
                              


                              By:  /s/ Gerard M. Lavin           
                                   ------------------------------
                                   Gerard M. Lavin 
                                   President 

                              PERKINS, WOLF, MCDONNELL & COMPANY



                              By:  /s/ Robert H. Perkins         
                                   ------------------------------
                                   Robert H. Perkins 
                                   President 


                                          8

<PAGE>
                                      EXHIBIT A
                          (AS AMENDED THROUGH APRIL 2, 1998)
                                        TO THE
                                   OCTOBER 6, 1994
                                  CUSTODY AGREEMENT
                                       BETWEEN
                               FORTIS SERIES FUND, INC.
                                         AND
                           FIRST BANK NATIONAL ASSOCIATION


Name of Series                                         Effective Date
- --------------                                         --------------

Series F - Global Growth Series                        October 6, 1994

Series J - International Stock Series                  October 6, 1994

Series K - Global Bond Series                          October 6, 1994

Series L - Global Asset Allocation Series              October 6, 1994

Series O - Blue Chip Stock Series                      March 27, 1996

Series P - Small Cap Value Series                      April 2, 1998

Series Q - Mid Cap Stock Series                        April 2, 1998

Series R - Large Cap Growth Series                     April 2, 1998


Dated this 2nd day of April, 1998.

FORTIS SERIES FUND, INC.                     U.S. BANK NATIONAL ASSOCIATION
                                             (Formerly FIRST BANK NATIONAL 
                                             ASSOCIATION)

/s/ Tamara L. Fagely                         /s/ Judy O'Hagan             
- ------------------------------               ------------------------------
Tamara L. Fagely                             Judy O'Hagan
Vice President & Treasurer                   Assistant Vice President

Attest:                                      Attest:


/s/ Scott R. Plummer                         /s/ Lynne M. Magel
- ------------------------------               ------------------------------
Scott R. Plummer                             Lynne M. Magel
Vice President & Assistant Treasurer         Assistant Vice President


<PAGE>

                                     [LETTERHEAD]


Fortis Series Fund, Inc.
500 Bielenberg Drive
Woodbury, Minnesota  55125

Ladies and Gentlemen:

          We have acted as counsel to Fortis Series Fund, Inc., a Minnesota 
corporation (the "Fund"), in connection with a Registration Statement on Form 
N-1A (File No. 33-3920) (the "Registration Statement") relating to the sale 
by the Fund of an indefinite number of shares of the Fund's Series P, Series 
Q and Series R common stock, par value of $.01 per share (the "Shares").

          We have examined such documents and have reviewed such questions of 
law as we have considered necessary and appropriate for the purposes of our 
opinions set forth below.  In rendering our opinions set forth below, we have 
assumed the authenticity of all documents submitted to us as originals, the 
genuineness of all signatures and the conformity to authentic originals of 
all documents submitted to us as copies.  We have also assumed the legal 
capacity for all purposes relevant hereto of all natural persons and, with 
respect to all parties to agreements or instruments relevant hereto other 
than the Fund, that such parties had the requisite power and authority 
(corporate or otherwise) to execute, deliver and perform such agreements or 
instruments, that such agreements or instruments have been duly authorized by 
all requisite action (corporate or otherwise), executed and delivered by such 
parties and that such agreements or instruments are the valid, binding and 
enforceable obligations of such parties.  As to questions of fact material to 
our opinions, we have relied upon certificates of officers of the Fund and of 
public officials. We have also assumed that the Shares will be issued and 
sold as described in the Registration Statement.

          Based on the foregoing, we are of the opinion that the Shares have 
been duly authorized by all requisite corporate action and, upon issuance, 
delivery and payment therefore as described in the Registration Statement, 
will be validly issued, fully paid and nonassessable.

          Our opinions expressed above are limited to the laws of the State 
of Minnesota.

<PAGE>

Fortis Series Fund, Inc.
April 30, 1998
Page 2

          We hereby consent to the filing of this opinion as an exhibit to 
the Registration Statement and to the reference to our firm under the caption 
"Counsel" in the Statement of Additional Information constituting part of the 
Registration Statement.

Dated:  April 30, 1998


                                       Very truly yours,


                                       /s/ Dorsey & Whitney LLP

MJR

<PAGE>
                            INDEPENDENT AUDITORS' CONSENT



The Board of Directors
Fortis Series Fund, Inc.:



We consent to the use of our report dated February 6, 1998 incorporated herein
by reference, our report dated March 25, 1998, included in Part B of the
Registration Statement and the references to our Firm under the headings 
"Financial Highlights" in Part A and "Financial Statements" in Part B of the 
Registration Statement.





                                             /s/ KPMG Peat Marwick LLP
                                             ----------------------------------
                                             KPMG Peat Marwick LLP



Minneapolis, Minnesota
April 30, 1998


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