MFS VARIABLE INSURANCE TRUST
485APOS, 1996-05-30
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<PAGE>
   

      As filed with the Securities and Exchange Commission on May 30, 1996
                                                  1933 Act File No.  33-74668
                                                  1940 Act File No. 811-8326
    
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------




                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C.  20549
                                ________________
   

                                    FORM N-1A
                             REGISTRATION STATEMENT
                                      UNDER
                           THE SECURITIES ACT OF 1933
                         POST-EFFECTIVE AMENDMENT NO. 6
                                       AND
                             REGISTRATION STATEMENT
                                      UNDER
                       THE INVESTMENT COMPANY ACT OF 1940
                                 AMENDMENT NO. 7
    

                          MFS VARIABLE INSURANCE TRUST
             (Exact name of registrant as specified in its charter)

               500 Boylston, Street, Boston, Massachusetts  02116
                    (Address of Principal Executive Offices)

        Registrant's Telephone Number, Including Area Code: 617-954-5000
           Stephen E. Cavan, Massachusetts Financial Services Company,
                500 Boylston Street, Boston, Massachusetts  02116
                     (Name and Address of Agent for Service)

   
                  APPROXIMATE DATE OF PROPOSED PUBLIC OFFERING:
  It is proposed that this filing will become effective (check appropriate box)

     / / immediately upon filing pursuant to paragraph (b)
     / / on [DATE] pursuant to paragraph (b)
     /X/ 60 days after filing pursuant to paragraph (a)(i)
     / / on [DATE] pursuant to paragraph (a)(i)
     / / 75 days after filing pursuant to paragraph (a)(ii)
     / / on [DATE] pursuant to paragraph (a)(ii) of rule 485.
    

     If appropriate, check the following box:

     / / this post-effective amendment designates a new effective date for a
     previously filed post-effective amendment


Pursuant to Rule 24f-2, the Registrant has registered an indefinite number of
its Shares of Beneficial Interest, without par value, under the Securities Act
of 1933.  The Registrant filed a Rule 24f-2 Notice for its fiscal year ended
December 31, 1995 on February 28, 1996.

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

<PAGE>


                          MFS VARIABLE INSURANCE TRUST
   

                           MFS EMERGING GROWTH SERIES
                                MFS VALUE SERIES
                               MFS RESEARCH SERIES
                          MFS GROWTH WITH INCOME SERIES
                             MFS TOTAL RETURN SERIES
                              MFS UTILITIES SERIES
                             MFS HIGH INCOME SERIES
                          MFS WORLD GOVERNMENTS SERIES
                        MFS STRATEGIC FIXED INCOME SERIES
                                 MFS BOND SERIES
                           MFS LIMITED MATURITY SERIES
                             MFS MONEY MARKET SERIES
    


                              CROSS REFERENCE SHEET


(Pursuant to Rule 404 showing location in Prospectus and/or Statement of
Additional Information of the responses to the Items in Parts A and B of 
Form N-1A)


                                                              STATEMENT OF
  ITEM NUMBER                                                  ADDITIONAL
FORM N-1A, PART A       PROSPECTUS CAPTION                 INFORMATION CAPTION
- -----------------       ------------------                 -------------------

   1 (a), (b)           Front Cover Page                            *


   2 (a)                Expense Summary                             *

     (b), (c)                        *                              *

   3 (a)                Condensed Financial Information             *

     (b)                             *                              *

     (c)                Information Concerning Shares               *
                        of Each Series - Performance
                        Information

     (d)                Condensed Financial Information             *

<PAGE>

                                                              STATEMENT OF
  ITEM NUMBER                                                  ADDITIONAL
FORM N-1A, PART A       PROSPECTUS CAPTION                 INFORMATION CAPTION
- -----------------       ------------------                 -------------------

   4 (a)                Front Cover Page; Investment                *
                        Concept of the Trust;
                        Investment Objectives and
                        Policies; Investment Techniques

     (b)                Investment Objectives and                   *
                        Policies; Investment Techniques

     (c)                Investment Objectives and                   *
                        Policies; Additional Risk Factors

   5 (a)                Investment Concept of the Trust;            *
                        Management of the Series -
                        Investment Adviser

     (b)                Front Cover Page; Management                *
                        of the Series - Investment
                        Adviser; Back Cover Page

     (c)                Management of the Series -                  *
                        Investment Adviser

     (d)                             *                              *

     (e)                Management of the Series -                  *
                        Shareholder Servicing Agent;
                        Back Cover Page

     (f)                Information Concerning Shares               *
                        of Each Series - Expenses;
                        Condensed Financial
                        Information; Expense Summary

     (g)                Additional Risk Factors - Portfolio         *
                        Trading

   5A (a), (b), (c)                  **                            **

<PAGE>
                                                               STATEMENT OF
  ITEM NUMBER                                                  ADDITIONAL
FORM N-1A, PART A       PROSPECTUS CAPTION                 INFORMATION CAPTION
- -----------------       ------------------                 -------------------

   6 (a)                Information Concerning Shares               *
                        of Each Series - Description of
                        Shares, Voting Rights and
                        Liabilities; Information
                        Concerning Shares of Each
                        Series - Purchases and
                        Redemptions

     (b), (c), (d)                 *                                *

     (e)                Shareholder Communications                  *

     (f)                Information Concerning Shares               *
                        of Each Series - Distributions;

     (g)                Information Concerning Shares               *
                        of Each Series - Tax Status;
                        Information Concerning Shares
                        of Each Series - Distributions

     (h)                           *                                *

   7 (a)                Front Cover Page; Management                *
                        of the Series - Distributor; Back
                        Cover Page

     (b)                Information Concerning Shares               *
                        of Each Series - Purchases and
                        Redemptions; Information
                        Concerning Shares of Each
                        Series - Net Asset Value

     (c), (d), (e), (f)          *                                  *

   8 (a), (b)           Information Concerning Shares               *
                        of Each Series - Purchases and
                        Redemptions

     (c)                         *                                  *

<PAGE>

                                                              STATEMENT OF
  ITEM NUMBER                                                  ADDITIONAL
FORM N-1A, PART A       PROSPECTUS CAPTION                 INFORMATION CAPTION
- -----------------       ------------------                 -------------------

     (d)                Information Concerning Shares               *
                        of Each Series - Purchases and
                        Redemptions

   9                             *                                  *

<PAGE>

                                                               STATEMENT OF
  ITEM NUMBER                                                   ADDITIONAL
FORM N-1A, PART B       PROSPECTUS CAPTION                  INFORMATION CAPTION
- -----------------       ------------------                  -------------------

  10 (a), (b)                    *                           Front Cover Page

  11                             *                           Front Cover Page

  12                             *                           General Information
                                                             and
                                                             Definitions

  13 (a)                         *                           Investment
                                                             Techniques

     (b)                         *                           Investment
                                                             Techniques;
                                                             Investment
                                                             Restrictions

     (c)                         *                           Investment
                                                             Restrictions

     (d)                         *                                    *

  14 (a), (b)                    *                           Management of the
                                                             Trust -
                                                             Trustees and
                                                             Officers

     (c)                         *                           Management of the
                                                             Trust -
                                                             Trustees and
                                                             Officers;
                                                             Appendix A

  15 (a)                         *                                    *

     (b), (c)                    *                           Management of the
                                                             Trust

  16 (a)                Management of the Fund -             Management of the
                        Investment Adviser                   Trust -
                                                             Investment Adviser;
                                                             Management of the
                                                             Trust -
                                                             Trustees and
                                                             Officers

     (b)                Management of the Fund -             Management of the
                        Investment Adviser;                  Trust -
                        Expenses                             Investment Adviser


     (c), (d)                    *                                    *

     (e)                         *                           Portfolio
                                                             Transactions and
                                                             Brokerage
                                                             Commissions

<PAGE>

                                                                 STATEMENT OF
  ITEM NUMBER                                                     ADDITIONAL
FORM N-1A, PART B       PROSPECTUS CAPTION                   INFORMATION CAPTION
- -----------------       ------------------                   -------------------

     (f), (g)                    *                           *

     (h)                         *                           Management of the
                                                             Trust -
                                                             Custodian;
                                                             Independent
                                                             Auditors and
                                                             Financial
                                                             Statements; Back
                                                             Cover Page

     (i)                         *                           Management of the
                                                             Trust -
                                                             Shareholder
                                                             Servicing Agent

  17 (a), (b), (c),              *                           Portfolio
                                                             Transactions and
     (d), (e)                                                Brokerage
                                                             Commissions

  18 (a)                         *                           Description of
                                                             Shares, Voting
                                                             Rights and
                                                             Liabilities

     (b)                         *                                    *

  19 (a)                         *                                    *

     (b)                Information Concerning Shares        Management of the
                        of Each Series - Net Asset           Trust -
                        Value; Information Concerning        Distributor;
                        Shares of Each Series -              Determination
                        Purchases and Redemptions            of Net Asset Value;
                                                             Performance
                                                             Information - Net
                                                             Asset Value

     (c)                         *                                    *

  20                             *                           Tax Status

  21 (a), (b)                    *                           Management of the
                                                             Trust -
                                                             Distributor

<PAGE>
                                                                STATEMENT OF
  ITEM NUMBER                                                    ADDITIONAL
FORM N-1A, PART B       PROSPECTUS CAPTION                   INFORMATION CAPTION
- -----------------       ------------------                   -------------------

     (c)                         *                                    *

  22 (a), (b)                    *                           Determination of
                                                             Net Asset Value;
                                                             Performance
                                                             Information

  23                             *                           Independent
                                                             Auditors
                                                             and Financial
                                                             Statements
_______________________
*    Not Applicable
**   Contained in Annual Report

<PAGE>
 
   
<TABLE>
<S>                          <C>
MFS-REGISTERED TRADEMARK-    PROSPECTUS
VARIABLE                     May 1, 1996 As Revised
INSURANCE TRUST              August 1, 1996
</TABLE>
    
 
- --------------------------------------------------------------------------------
 
   
<TABLE>
<S>                                       <C>
MFS-Registered Trademark- VARIABLE
INSURANCE TRUST-SM-
</TABLE>
    
 
MFS  Variable Insurance Trust (the "Trust") is an open-end management investment
company offering insurance company separate  accounts a selection of  investment
vehicles  for  variable  annuity  and  variable  life  insurance  contracts (the
"Contracts"). Currently the  Trust offers  shares of beneficial  interest of  12
separate  mutual fund series (individually  or collectively hereinafter referred
to as a "Series" or the "Series"):
 
   
- -- MFS EMERGING GROWTH  SERIES (the  "Emerging Growth Series"),  which seeks  to
   provide long-term growth of capital;
    
 
   
- -- MFS VALUE SERIES (the "Value Series"), which seeks capital appreciation;
    
 
- -- MFS RESEARCH SERIES (the "Research Series"), which seeks to provide long-term
   growth of capital and future income;
 
- -- MFS  GROWTH WITH INCOME SERIES (the "Growth With Income Series"), which seeks
   to provide  reasonable current  income and  long-term growth  of capital  and
   income;
 
- -- MFS TOTAL RETURN SERIES (the "Total Return Series"), which seeks primarily to
   provide  above-average income (compared  to a portfolio  invested entirely in
   equity securities)  consistent with  the prudent  employment of  capital  and
   secondarily  to provide  a reasonable opportunity  for growth  of capital and
   income;
 
- -- MFS UTILITIES SERIES (the "Utilities Series"), which seeks capital growth and
   current income  (income  above  that  available  from  a  portfolio  invested
   entirely in equity securities);
 
- -- MFS  HIGH INCOME SERIES (the "High  Income Series"), which seeks high current
   income  by  investing  primarily  in  a  professionally  managed  diversified
   portfolio  of  fixed  income securities,  some  of which  may  involve equity
   features;
 
- -- MFS WORLD GOVERNMENTS  SERIES (the "World  Governments Series"), which  seeks
   not  only preservation, but  also growth, of  capital, together with moderate
   current income;
 
- -- MFS STRATEGIC  FIXED INCOME  SERIES (the  "Strategic Fixed  Income  Series"),
   which seeks to maximize current income;
 
- -- MFS BOND SERIES (the "Bond Series"), which seeks primarily to provide as high
   a  level of current income as  is believed consistent with prudent investment
   risk and secondarily to protect shareholders' capital;
 
- -- MFS LIMITED  MATURITY SERIES  (the "Limited  Maturity Series"),  which  seeks
   primarily  to provide as high a level of  current income as is believed to be
   consistent  with  prudent   investment  risk  and   secondarily  to   protect
   shareholders' capital; and
 
- -- MFS  MONEY MARKET SERIES (the  "Money Market Series"), which  seeks as high a
   level of current income as is considered consistent with the preservation  of
   capital and liquidity.
                              -------------------
 
   
THE  HIGH INCOME SERIES AND THE STRATEGIC FIXED INCOME SERIES MAY EACH INVEST UP
TO 100%, RESPECTIVELY, OF ITS NET ASSETS IN LOWER RATED BONDS, COMMONLY KNOWN AS
"JUNK BONDS," THAT  ENTAIL GREATER  RISKS, INCLUDING DEFAULT  RISKS, THAN  THOSE
FOUND  IN  HIGHER RATED  SECURITIES. INVESTORS  SHOULD CAREFULLY  CONSIDER THESE
RISKS BEFORE INVESTING (SEE "ADDITIONAL RISK FACTORS -- LOWER RATED BONDS"). THE
EMERGING GROWTH SERIES,  THE VALUE SERIES,  THE RESEARCH SERIES  AND THE  GROWTH
WITH  INCOME SERIES ARE INTENDED FOR INVESTORS WHO UNDERSTAND AND ARE WILLING TO
ACCEPT THE RISKS  ENTAILED IN SEEKING  LONG-TERM GROWTH OF  CAPITAL. BECAUSE  OF
THEIR   INVESTMENT  POLICIES   PERMITTING  INVESTMENT   IN  FOREIGN  SECURITIES,
INVESTMENTS IN EACH SERIES (EXCEPT FOR THE LIMITED MATURITY SERIES AND THE MONEY
MARKET SERIES) MAY BE SUBJECT  TO A GREATER DEGREE  OF RISK THAN INVESTMENTS  IN
OTHER INVESTMENT COMPANIES WHICH INVEST ENTIRELY IN DOMESTIC SECURITIES.
    
                              -------------------
<PAGE>
  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.
                              -------------------
 
INVESTMENTS IN THE MONEY MARKET SERIES ARE NEITHER INSURED NOR GUARANTEED BY THE
U.S.  GOVERNMENT  AND THERE  IS NO  ASSURANCE THAT  THE SERIES  WILL BE  ABLE TO
MAINTAIN A STABLE NET ASSET VALUE OF $1.00 PER SHARE.
                              -------------------
 
SHARES OF THE TRUST  ARE AVAILABLE AND  ARE BEING MARKETED  AS A POOLED  FUNDING
VEHICLE FOR LIFE INSURANCE COMPANIES WRITING ALL TYPES OF CONTRACTS.
 
   
This  Prospectus sets forth  concisely the information about  each Series that a
prospective investor should know  before applying for  the Contracts offered  by
the  separate accounts of certain  insurance companies ("Participating Insurance
Companies"). Investors are advised  to read this  Prospectus and the  applicable
Contract  prospectus  carefully and  retain them  for  future reference.  If you
require more detailed information, a  Statement of Additional Information  dated
May  1, 1996, as revised August 1, 1996, as amended or supplemented from time to
time ("SAI"), is available  upon request without charge  and may be obtained  by
calling  or by writing  to the Shareholder  Servicing Agent (see  back cover for
address and phone number). The SAI, which is incorporated by reference into this
Prospectus, has  been filed  with the  Securities and  Exchange Commission  (the
"SEC").
    
 
   INVESTORS SHOULD READ THIS PROSPECTUS AND RETAIN IT FOR FUTURE REFERENCE.
<PAGE>
TABLE OF CONTENTS
 
   
<TABLE>
<CAPTION>
                                                                                                       PAGE
                                                                                                       ---
  <S>                                                                                                  <C>
  1.  Expense Summary................................................................................   4
  2.  Investment Concept of the Trust................................................................   5
  3.  Condensed Financial Information................................................................   6
  4.  Investment Objectives and Policies.............................................................  15
      MFS Emerging Growth Series.....................................................................  15
      MFS Value Series...............................................................................  15
      MFS Research Series............................................................................  16
      MFS Growth With Income Series..................................................................  16
      MFS Total Return Series........................................................................  16
      MFS Utilities Series...........................................................................  17
      MFS High Income Series.........................................................................  18
      MFS World Governments Series...................................................................  19
      MFS Strategic Fixed Income Series..............................................................  20
      MFS Bond Series................................................................................  22
      MFS Limited Maturity Series....................................................................  22
      MFS Money Market Series........................................................................  23
  5.  Investment Techniques..........................................................................  24
  6.  Additional Risk Factors........................................................................  31
  7.  Management of the Series.......................................................................  35
  8.  Information Concerning Shares of Each Series...................................................  38
      Purchases and Redemptions......................................................................  38
      Net Asset Value................................................................................  38
      Distributions..................................................................................  38
      Tax Status.....................................................................................  39
      Description of Shares, Voting Rights and Liabilities...........................................  39
      Performance Information........................................................................  39
      Expenses.......................................................................................  40
      Shareholder Communications.....................................................................  41
  Appendix A -- Description of Bond Ratings..........................................................  A-1
  Appendix B -- Principal Sectors of the Utilities Industry..........................................  B-1
  Appendix C -- Portfolio Composition Charts.........................................................  C-1
</TABLE>
    
 
                                       3
<PAGE>
1.  EXPENSE SUMMARY
 
ANNUAL OPERATING EXPENSES (AS A PERCENTAGE OF AVERAGE NET ASSETS):
   
<TABLE>
<CAPTION>
                                                                MFS
                                                              EMERGING     MFS        MFS      MFS GROWTH
                                                               GROWTH     VALUE     RESEARCH   WITH INCOME
                                                               SERIES     SERIES     SERIES      SERIES
                                                              --------   --------   --------   -----------
<S>                                                           <C>        <C>        <C>        <C>
Management Fee..............................................  0.75%      0.75%      0.75%         0.75%
Other Expenses (after fee reduction)(4).....................  0.25%(1)   0.25%(1)   0.25%(1)      0.25%(1)
                                                               ---        ---        ---         -----
Total Operating Expenses (after fee reduction)..............  1.00%(1)   1.00%(1)   1.00%(1)      1.00%(1)
 
<CAPTION>
 
                                                                MFS
                                                               TOTAL       MFS      MFS HIGH    MFS WORLD
                                                               RETURN    UTILITIES   INCOME    GOVERNMENTS
                                                               SERIES     SERIES     SERIES      SERIES
                                                              --------   --------   --------   -----------
<S>                                                           <C>        <C>        <C>        <C>
Management Fee..............................................  0.75%      0.75%      0.75%         0.75%
Other Expenses (after fee reduction)(4).....................  0.25%(1)   0.25%(1)   0.25%(1)      0.25%(2)
                                                               ---        ---        ---         -----
Total Operating Expenses (after fee reduction)..............  1.00%(1)   1.00%(1)   1.00%(1)      1.00%(2)
<CAPTION>
 
                                                                MFS
                                                              STRATEGIC               MFS
                                                               FIXED                LIMITED     MFS MONEY
                                                               INCOME    MFS BOND   MATURITY     MARKET
                                                               SERIES     SERIES     SERIES      SERIES
                                                              --------   --------   --------   -----------
<S>                                                           <C>        <C>        <C>        <C>
Management Fee..............................................  0.75%      0.60%      0.55%         0.50%
Other Expenses (after fee reduction)(4).....................  0.25%(1)   0.40%(1)   0.45%(1)      0.10%(3)
                                                               ---        ---        ---         -----
Total Operating Expenses (after fee reduction)..............  1.00%(1)   1.00%(1)   1.00%(1)      0.60%(3)
<FN>
- ------------------------
(1)        The  Adviser has agreed to  bear, subject to reimbursement,  expenses for each of  the Emerging Growth Series, Value
           Series, Research Series,  Growth With  Income Series,  Total Return Series,  Utilities Series,  High Income  Series,
           Strategic  Fixed Income Series, Bond Series  and Limited Maturity Series such  that each Series' aggregate operating
           expenses shall not exceed, on an annualized basis, 1.00% of the average daily net assets of the Series from November
           2, 1994 through December 31, 1996, 1.25% of the average daily net assets of the Series from January 1, 1997  through
           December 31, 1998, and 1.50% of the average daily net assets of the Series from January 1, 1999 through December 31,
           2004;  provided however, that this obligation may be terminated  or revised at any time. See "Information Concerning
           Shares of Each  Series--Expenses" below.  Absent this  expense arrangement,  "Other Expenses"  and "Total  Operating
           Expenses" would be 1.00% and 1.75%, respectively for the Value Series and Strategic Fixed Income Series. Absent this
           expense  arrangement, "Other Expenses" for  the Emerging Growth Series, Research  Series, Growth With Income Series,
           Total Return Series, Utilities Series, High Income Series,  Bond Series and Limited Maturity Series would be  2.16%,
           3.15%,  20.69%, 2.02%, 2.33%, 3.63%, 43.25% and 1.00%,  respectively, and "Total Operating Expenses" would be 2.91%,
           3.90%, 21.44%, 2.77%, 3.08%, 4.38%, 43.85% and 1.55%, respectively, for these Series.
(2)        The Adviser has agreed to bear, subject to reimbursement, until December 31, 2004, expenses of the World Governments
           Series such that  the Series'  aggregate operating expenses  do not  exceed 1.00%, on  an annualized  basis, of  its
           average  daily net assets. See  "Information Concerning Shares of Each  Series--Expenses" below. Absent this expense
           arrangement, "Other Expenses" and "Total Operating Expenses" would be 1.24% and 1.99%, respectively.
(3)        The Adviser has agreed  to bear, subject  to reimbursement, until December  31, 2004, expenses  of the Money  Market
           Series  such that  the Series'  aggregate operating expenses  do not  exceed, on an  annualized basis,  0.60% of its
           average daily net assets. See "Information Concerning Shares  of Each Series-- Expenses" below. Absent this  expense
           arrangement, "Other Expenses" and "Total Operating Expenses" for the Money Market Series would be 21.04% and 21.54%,
           respectively.
(4)        Each  Series has an expense offset arrangement which reduces the Series' custodian fee based upon the amount of cash
           maintained by  the  Series  with its  custodian  and  dividend disbursing  agent,  and  may enter  into  other  such
           arrangements  and  directed  brokerage arrangements  (which  would also  have  the  effect of  reducing  the Series'
           expenses). Any such fee reductions are not reflected under "Other Expenses."
</TABLE>
    
 
    The  purpose  of  the  expense  table  above  is  to  assist  investors   in
understanding  the various costs  and expenses that a  shareholder of the Series
will bear directly or indirectly. The  Series' annual operating expenses do  not
reflect  expenses  imposed  by  separate  accounts  of  Participating  Insurance
Companies through  which an  investment in  a Series  is made  or their  related
Contracts. A separate account's expenses are disclosed in the prospectus through
which the Contract relating to that separate account is offered for sale.
 
                                       4
<PAGE>
2.  INVESTMENT CONCEPT OF THE TRUST
 
   
    The Trust is an open-end, registered management investment company comprised
of  the following twelve series: Emerging  Growth Series, Value Series, Research
Series, Growth With Income Series,  Total Return Series, Utilities Series,  High
Income  Series, World  Governments Series,  Strategic Fixed  Income Series, Bond
Series, Limited  Maturity Series  and  Money Market  Series.  Each Series  is  a
segregated,  separately  managed portfolio  of  securities. All  of  the Series,
except the Utilities Series, World Governments Series and Strategic Fixed Income
Series, are diversified. Additional series may be created from time to time. The
Trust was organized as a  business trust under the  laws of The Commonwealth  of
Massachusetts by a Declaration of Trust dated February 1, 1994.
    
 
    The  Trust  currently  offers shares  of  each Series  to  insurance company
separate accounts that fund Contracts. Separate accounts may purchase or  redeem
shares  at net  asset value  without any  sales or  redemption charge.  Fees and
charges imposed by a separate account, however, will affect the actual return to
the  holder  of  a  Contract.  A  separate  account  may  also  impose   certain
restrictions  or limitations on the allocation  of purchase payments or Contract
value to one or more Series, and  not all Series may be available in  connection
with  a particular Contract. Prospective investors should consult the applicable
Contract prospectus for information regarding fees and expenses of the  Contract
and  separate account and any applicable  restrictions or limitations. The Trust
assumes no responsibility for such prospectuses.
 
    Shares of the Series are offered  to the separate accounts of  Participating
Insurance  Companies  that are  affiliated  or unaffiliated  ("shared funding").
Shares of the Series may serve  as the underlying investments for both  variable
annuity  and  variable  life  insurance  contracts  ("mixed  funding").  Due  to
differences in tax treatment or  other considerations, the interests of  various
Contract  owners might at some time be in conflict. The Trust currently does not
foresee any such conflict. Nevertheless, the Trust's Trustees intend to  monitor
events  in order  to identify  any material  irreconcilable conflicts  which may
possibly arise and to determine what action, if any, should be taken in response
thereto. If such a conflict were to occur, one or more separate accounts of  the
Participating  Insurance Companies might be required to withdraw its investments
in one one  or more  Series. This  might force a  Series to  sell securities  at
disadvantageous prices.
 
    Individual Contract holders are not the "shareholders" of the Trust. Rather,
the  Participating  Insurance  Companies  and their  separate  accounts  are the
shareholders or  investors,  although such  companies  may pass  through  voting
rights to their Contract holders.
 
    The Trust's Board of Trustees provides broad supervision over the affairs of
the  Trust and the Series. Massachusetts  Financial Services Company, a Delaware
corporation ("MFS" or the "Adviser"), is the investment adviser to each  Series.
A majority of the Trustees of the Trust are not affiliated with the Adviser. The
Adviser  is responsible for the management of  the assets of each Series and the
officers of the Trust  are responsible for the  operations. The Adviser  manages
the  Series'  portfolios  from day  to  day  in accordance  with  the investment
objectives and policies of each Series. The selection of investments and the way
they are managed  depend on the  conditions and  trends in the  economy and  the
financial marketplaces.
 
                                       5
<PAGE>
3.  CONDENSED FINANCIAL INFORMATION
 
   
The  following financial information (presented  for each Series which commenced
investment operations prior  to December 31,  1995) has been  audited since  the
commencement  of  investment operations  of such  Series and  should be  read in
conjunction with the financial statements included in the Series' Annual Reports
to shareholders. These financial statements  are incorporated by reference  into
the  SAI in reliance upon  the report of the  Series' independent auditors given
upon their authority, as experts in accounting and auditing. The Series' current
independent auditors  are Deloitte  & Touche  LLP. The  Value Series,  Strategic
Fixed  Income Series  and Limited Maturity  Series had  not commenced investment
operations prior to December 31, 1995.
    
 
                             EMERGING GROWTH SERIES
 
<TABLE>
<CAPTION>
                                                                      PERIOD ENDED
                                                                   DECEMBER 31, 1995*
                                                                   ------------------
<S>                                                                <C>
Per share data (for a share outstanding throughout the period):
Net asset value--beginning of period.............................        $10.00
                                                                         ------
Income from investment operations#--
  Net investment incomeSection...................................        $ 0.01
  Net realized and unrealized gain on investments................          1.74
                                                                         ------
    Total from investment operations.............................        $ 1.75
                                                                         ------
Less distributions declared to shareholders--
  From net investment income.....................................        $(0.01)
  From net realized gain on investments..........................         (0.31)
  Tax return of capital..........................................         (0.02)
                                                                         ------
    Total distributions declared to shareholders.................        $(0.34)
                                                                         ------
Net asset value--end of period...................................        $11.41
                                                                         ------
                                                                         ------
Total return.....................................................         17.41%++
Ratios (to average net assets)/Supplemental dataSection:
  Expenses.......................................................          1.00%+
  Net investment income..........................................          0.10%+
Portfolio turnover...............................................            73%
Net assets at end of period (000 omitted)........................        $3,869
<FN>
- ------------------------
        *  For the period from the commencement of investment operations, July 24, 1995 to December 31, 1995.
        +  Annualized.
       ++  Not annualized.
        #  Per share data is based on average shares outstanding.
  Section  The Adviser voluntarily agreed to maintain the expenses of the  Series at not more than 1.00% of average daily  net
           assets. To the extent actual expenses were over these limitations, the net investment loss per share and the ratios
           would have been:
 
Net investment loss..............................................       $(0.18)
Ratios (to average net assets):
  Expenses.......................................................         2.91%+
  Net investment loss............................................       (1.78)%+
</TABLE>
 
                                       6
<PAGE>
                                RESEARCH SERIES
 
<TABLE>
<CAPTION>
                                                                      PERIOD ENDED
                                                                   DECEMBER 31, 1995*
                                                                   ------------------
<S>                                                                <C>
Per share data (for a share outstanding throughout the period):
Net asset value--beginning of period.............................        $10.00
                                                                         ------
Income from investment operations#--
  Net investment incomeSection...................................        $ 0.05
  Net realized and unrealized gain on investments and foreign
    currency transactions........................................          1.01
                                                                         ------
    Total from investment operations.............................        $ 1.06
                                                                         ------
Less distributions declared to shareholders--
  From net investment income.....................................        $(0.03)
  From net realized gain on investments and foreign currency
    transactions.................................................         (0.14)
                                                                         ------
    Total distributions declared to shareholders.................        $(0.17)
                                                                         ------
Net asset value--end of period...................................        $10.89
                                                                         ------
                                                                         ------
Total return.....................................................         10.62%++
Ratios (to average net assets)/Supplemental dataSection:
  Expenses.......................................................          1.00%+
  Net investment income..........................................          1.15%+
Portfolio turnover...............................................            28%
Net assets at end of period (000 omitted)........................        $2,530
<FN>
- ------------------------
        *  For the period from the commencement of investment operations, July 26, 1995 to December 31, 1995.
        +  Annualized.
       ++  Not annualized.
        #  Per share data is based on average shares outstanding.
  Section  The  Adviser voluntarily agreed to maintain the expenses of the  Series at not more than 1.00% of average daily net
           assets. To the extent actual expenses were over these limitations, the net investment loss per share and the ratios
           would have been:
 
Net investment loss..............................................       $(0.08)
Ratios (to average net assets):
  Expenses.......................................................         3.90%+
  Net investment loss............................................       (1.73)%+
</TABLE>
 
                                       7
<PAGE>
                           GROWTH WITH INCOME SERIES
 
<TABLE>
<CAPTION>
                                                                      PERIOD ENDED
                                                                   DECEMBER 31, 1995*
                                                                   ------------------
<S>                                                                <C>
Per share data (for a share outstanding throughout the period):
Net asset value--beginning of period.............................        $10.00
                                                                         ------
Income from investment operations#--
  Net investment incomeSection...................................        $ 0.05
  Net realized and unrealized gain on investments................          0.61
                                                                         ------
    Total from investment operations.............................        $ 0.66
                                                                         ------
Less distributions declared to shareholders--
  From net investment income.....................................        $(0.05)
                                                                         ------
    Total distributions declared to shareholders.................        $(0.05)
                                                                         ------
Net asset value--end of period...................................        $10.61
                                                                         ------
                                                                         ------
Total return.....................................................          6.64%++
Ratios (to average net assets)/Supplemental dataSection:
  Expenses.......................................................          1.00%+
  Net investment income..........................................          2.20%+
Portfolio turnover...............................................             2%
Net assets at end of period (000 omitted)........................        $  365
<FN>
- ------------------------
        *  For the period from the commencement of investment operations, October 9, 1995 to December 31, 1995.
        +  Annualized.
       ++  Not annualized.
        #  Per share data is based on average shares outstanding.
  Section  The Adviser voluntarily agreed to maintain the expenses of the  Series at not more than 1.00% of average daily  net
           assets. To the extent actual expenses were over these limitations, the net investment loss per share and the ratios
           would have been:
 
Net investment loss..............................................      $ (0.04)
Ratios (to average net assets):
  Expenses.......................................................        21.44%+
  Net investment loss............................................      (18.24)%+
</TABLE>
 
                                       8
<PAGE>
                              TOTAL RETURN SERIES
 
<TABLE>
<CAPTION>
                                                                      PERIOD ENDED
                                                                   DECEMBER 31, 1995*
                                                                   ------------------
<S>                                                                <C>
Per share data (for a share outstanding throughout the period):
Net asset value--beginning of period.............................        $10.00
                                                                         ------
Income from investment operations#--
  Net investment incomeSection...................................        $ 0.41
  Net realized and unrealized gain on investments and foreign
    currency transactions........................................          2.32
                                                                         ------
    Total from investment operations.............................        $ 2.73
                                                                         ------
Less distributions declared to shareholders--
  From net investment income.....................................        $(0.25)
  From net realized gain on investments and foreign currency
    transactions.................................................         (0.23)
                                                                         ------
    Total distributions declared to shareholders.................        $(0.48)
                                                                         ------
Net asset value--end of period...................................        $12.25
                                                                         ------
                                                                         ------
Total return.....................................................         27.34%++
Ratios (to average net assets)/Supplemental dataSection:
  Expenses.......................................................          1.00%+
  Net investment income..........................................          3.83%+
Portfolio turnover...............................................            16%
Net assets at end of period (000 omitted)........................        $2,797
<FN>
- ------------------------
        *  For the period from the commencement of investment operations, January 3, 1995 to December 31, 1995.
        +  Annualized.
       ++  Not annualized.
        #  Per share data is based on average shares outstanding.
  Section  The  Adviser voluntarily agreed to maintain the expenses of the  Series at not more than 1.00% of average daily net
           assets. To the extent  actual expenses were  over these limitations, the  net investment income  per share and  the
           ratios would have been:
 
Net investment income............................................        $0.22
Ratios (to average net assets):
  Expenses.......................................................         2.77%+
  Net investment income..........................................         2.09%+
</TABLE>
 
                                       9
<PAGE>
                                UTILITIES SERIES
 
<TABLE>
<CAPTION>
                                                                      PERIOD ENDED
                                                                   DECEMBER 31, 1995*
                                                                   ------------------
<S>                                                                <C>
Per share data (for a share outstanding throughout the period):
Net asset value--beginning of period.............................        $10.00
                                                                         ------
Income from investment operations#--
  Net investment incomeSection...................................        $ 0.39
  Net realized and unrealized gain on investments and foreign
    currency transactions........................................          3.00
                                                                         ------
    Total from investment operations.............................        $ 3.39
                                                                         ------
Less distributions declared to shareholders--
  From net investment income.....................................        $(0.24)
  From net realized gain on investments and foreign currency
    transactions.................................................         (0.58)
                                                                         ------
    Total distributions declared to shareholders.................        $(0.82)
                                                                         ------
Net asset value--end of period...................................        $12.57
                                                                         ------
                                                                         ------
Total return.....................................................         33.94%++
Ratios (to average net assets)/Supplemental dataSection:
  Expenses.......................................................          1.00%+
  Net investment income..........................................          3.66%+
Portfolio turnover...............................................            94%
Net assets at end of period (000 omitted)........................        $2,373
<FN>
- ------------------------
        *  For the period from the commencement of investment operations, January 3, 1995 to December 31, 1995.
        +  Annualized.
       ++  Not annualized.
        #  Per share data is based on average shares outstanding.
  Section  The  Adviser voluntarily agreed to maintain the expenses of the  Series at not more than 1.00% of average daily net
           assets. To the extent  actual expenses were  over these limitations, the  net investment income  per share and  the
           ratios would have been:
 
Net investment income............................................        $0.17
Ratios (to average net assets):
  Expenses.......................................................         3.08%+
  Net investment income..........................................         1.62%+
</TABLE>
 
                                       10
<PAGE>
                               HIGH INCOME SERIES
 
<TABLE>
<CAPTION>
                                                                      PERIOD ENDED
                                                                   DECEMBER 31, 1995*
                                                                   ------------------
<S>                                                                <C>
Per share data (for a share outstanding throughout the period):
Net asset value--beginning of period.............................        $10.00
                                                                         ------
Income from investment operations#--
  Net investment incomeSection...................................        $ 0.34
  Net realized and unrealized gain on investments................          0.18
                                                                         ------
    Total from investment operations.............................        $ 0.52
                                                                         ------
Less distributions declared to shareholders--
  From net investment income.....................................        $(0.23)
                                                                         ------
Net asset value--end of period...................................        $10.29
                                                                         ------
                                                                         ------
Total return.....................................................          5.25%++
Ratios (to average net assets)/Supplemental dataSection:
  Expenses.......................................................          1.00%+
  Net investment income..........................................          8.17%+
Portfolio turnover...............................................            32%
Net assets at end of period (000 omitted)........................        $1,946
<FN>
- ------------------------
        *  For the period from the commencement of investment operations, July 26, 1995 to December 31, 1995.
        +  Annualized.
       ++  Not annualized.
        #  Per share data is based on average shares outstanding.
  Section  The  Adviser voluntarily agreed to maintain the expenses of the  Series at not more than 1.00% of average daily net
           assets. To the extent  actual expenses were  over these limitations, the  net investment income  per share and  the
           ratios would have been:
 
Net investment income............................................        $0.20
Ratios (to average net assets):
  Expenses.......................................................         4.38%+
  Net investment income..........................................         4.82%+
</TABLE>
 
                                       11
<PAGE>
                            WORLD GOVERNMENTS SERIES
 
<TABLE>
<CAPTION>
                                                                       YEAR ENDED          PERIOD ENDED
                                                                   DECEMBER 31, 1995    DECEMBER 31, 1994*
                                                                   ------------------   ------------------
<S>                                                                <C>                  <C>
Per share data (for a share outstanding throughout each period):
Net asset value--beginning of period.............................        $ 9.82               $10.00
                                                                         ------               ------
Income from investment operations#--
  Net investment incomeSection...................................        $ 0.63               $ 0.17
  Net realized and unrealized gain (loss) on investments and
    foreign currency transactions................................          0.78                (0.09)
                                                                         ------               ------
    Total from investment operations.............................        $ 1.41               $ 0.08
                                                                         ------               ------
Less distributions declared to shareholders--
  From net investment income.....................................        $(0.42)              $(0.17)
  In excess of net investment income.............................         (0.54)               (0.09)
  Tax return of capital..........................................         (0.10)                  --
                                                                         ------               ------
    Total distributions declared to shareholders.................        $(1.06)              $(0.26)
                                                                         ------               ------
Net asset value--end of period...................................        $10.17               $ 9.82
                                                                         ------               ------
                                                                         ------               ------
Total return.....................................................         14.38%                0.79%++
Ratios (to average net assets)/Supplemental dataSection:
  Expenses##.....................................................          1.00%                1.00%+
  Net investment income..........................................          6.05%                4.68%+
Portfolio turnover...............................................           211%                  62%
Net assets at end of period (000 omitted)........................        $7,424               $2,881
</TABLE>
 
- ------------------------
 
<TABLE>
<C>        <S>
        *  For the period from the commencement of investment operations, June 14, 1994 to December 31, 1994.
        +  Annualized.
       ++  Not annualized.
        #  Per share data is based on average shares outstanding.
       ##  For fiscal years after September 1, 1995, the Series' expenses are calculated without reduction for fees paid
           indirectly.
  Section  The  Adviser voluntarily agreed to maintain the expenses of the Series at not more than 1.00% of average daily net
           assets. To the extent actual  expenses were over these  limitations, the net investment  income per share and  the
           ratios would have been:
</TABLE>
 
<TABLE>
<S>                                                                <C>      <C>
Net investment income............................................  $0.53    $0.16
Ratios (to average net assets):
  Expenses.......................................................   1.99%    1.10%+
  Net investment income..........................................   5.09%    4.58%+
</TABLE>
 
                                       12
<PAGE>
                                  BOND SERIES
 
<TABLE>
<CAPTION>
                                                                      PERIOD ENDED
                                                                   DECEMBER 31, 1995*
                                                                   ------------------
<S>                                                                <C>
Per share data (for a share outstanding throughout the period):
Net asset value--beginning of period.............................        $10.00
                                                                         ------
Income from investment operations#--
  Net investment incomeSection...................................        $ 0.09
  Net realized and unrealized gain on investments................          0.21
                                                                         ------
    Total from investment operations.............................        $ 0.30
                                                                         ------
Less distributions declared to shareholders--
  From net investment income.....................................        $(0.09)
  From net realized gain on investments..........................         (0.02)
                                                                         ------
    Total distributions declared to shareholders.................        $(0.11)
                                                                         ------
Net asset value--end of period...................................        $10.19
                                                                         ------
                                                                         ------
Total return.....................................................          3.02%++
Ratios (to average net assets)/Supplemental dataSection:
  Expenses.......................................................          1.00%+
  Net investment income..........................................          4.89%+
Portfolio turnover...............................................            55%
Net assets at end of period (000 omitted)........................        $  228
<FN>
- ------------------------
        *  For the period from the commencement of investment operations, October 24, 1995 to December 31, 1995.
        +  Annualized.
       ++  Not annualized.
        #  Per share data is based on average shares outstanding.
  Section  The  Adviser voluntarily agreed to maintain the expenses of the  Series at not more than 1.00% of average daily net
           assets. To the extent actual expenses were over these limitations, the net investment loss per share and the ratios
           would have been:
 
Net investment loss..............................................      $ (0.70)
Ratios (to average net assets):
  Expenses.......................................................        43.85%+
  Net investment loss............................................      (37.96)%+
</TABLE>
 
                                       13
<PAGE>
                              MONEY MARKET SERIES
 
<TABLE>
<CAPTION>
                                                                      PERIOD ENDED
                                                                   DECEMBER 31, 1995*
                                                                   ------------------
<S>                                                                <C>
Per share data (for a share outstanding throughout the period):
Net asset value--beginning of period.............................        $ 1.00
                                                                         ------
Income from investment operations#--
  Net investment incomeSection...................................        $ 0.04
Less distributions declared to shareholders from net investment
 income..........................................................         (0.04)
                                                                         ------
Net asset value--end of period...................................        $ 1.00
                                                                         ------
                                                                         ------
Total return.....................................................          4.37%++
Ratios (to average net assets)/Supplemental dataSection:
  Expenses.......................................................          0.60%+
  Net investment income..........................................          4.54%+
Net assets at end of period (000 omitted)........................        $  180
<FN>
- ------------------------
        *  For the period from the commencement of investment operations, January 3, 1995 to December 31, 1995.
        +  Annualized.
       ++  Not annualized.
        #  Per share data is based on average shares outstanding.
  Section  The Adviser voluntarily agreed to maintain the expenses of the  Series at not more than 0.60% of average daily  net
           assets. To the extent actual expenses were over these limitations, the net investment loss per share and the ratios
           would have been:
 
Net investment loss..............................................      $ (0.14)
Ratios (to average net assets):
  Expenses.......................................................        21.54%+
  Net investment loss............................................      (16.37)%+
</TABLE>
 
                                       14
<PAGE>
4.  INVESTMENT OBJECTIVES AND POLICIES
 
    Each  Series has  different investment  objectives which  it pursues through
separate investment policies, as described below. The differences in  objectives
and policies among the Series can be expected to affect the degree of market and
financial  risk to which each  Series is subject and  the return of each Series.
The investment  objectives and  policies of  each Series  may, unless  otherwise
specifically  stated, be changed by the Trustees  of the Trust without a vote of
the shareholders. Any investment  involves risk and there  is no assurance  that
the objectives of any Series will be achieved.
 
    In  addition  to the  specific  investment practices  described  below, each
Series may also engage in certain  investment techniques as described under  the
caption  "Investment  Techniques"  below  and  in  the  SAI  under  the  caption
"Investment Techniques." The Series' investments  are subject to certain  risks,
as described in the above-referenced sections of this Prospectus and the SAI and
as described below under the caption "Additional Risk Factors."
 
MFS  EMERGING GROWTH SERIES --  The Series seeks to  provide long-term growth of
capital. Dividend  and interest  income from  portfolio securities,  if any,  is
incidental to the Series' investment objective of long-term growth of capital.
 
    The  Series' policy is to invest primarily (I.E., at least 80% of its assets
under normal circumstances) in common stocks of companies that MFS believes  are
early  in  their  life  cycle  but which  have  the  potential  to  become major
enterprises (emerging  growth  companies).  Such companies  generally  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 the products,
technologies, management and  market and other  opportunities which are  usually
necessary  to become more widely recognized as growth companies. Emerging growth
companies can  be of  any size,  and the  Series may  invest in  larger or  more
established  companies whose rates of earnings growth are expected to accelerate
because of  special  factors,  such as  rejuvenated  management,  new  products,
changes  in consumer demand, or basic changes in the economic environment. While
the Series will invest primarily in common stocks, the Series 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  either as  individual issues  or as  types of  securities in certain
economic environments.
 
    The nature of investing in  emerging growth companies involves greater  risk
than  is customarily associated with  investments in more established companies.
Emerging growth companies often have limited product lines, markets or financial
resources, and  they may  be dependent  on one-person  management. In  addition,
there  may be less research  available on many promising  small and medium sized
emerging growth companies, making  it more difficult to  find and analyze  these
companies.  The  securities  of  emerging  growth  companies  may  have  limited
marketability and may be subject to more abrupt or erratic market movements than
securities of larger, more established  growth companies or the market  averages
in  general. Shares of the 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 proven growth stocks.
 
    Consistent  with its investment objective  and policies described above, the
Series may also invest up to 25% (and generally expects to invest not more  than
15%)  of  its  net  assets  in  foreign  securities  (including  emerging market
securities and Brady Bonds) which are not traded on a U.S. exchange.
 
   
MFS VALUE SERIES --  The Value Series' investment  objective is to seek  capital
appreciation.  Dividend income,  if any,  is a  consideration incidental  to the
Series' objective of capital appreciation.
    
 
   
    While the Series'  policy is to  invest primarily in  common stocks, it  may
seek  appreciation in other types of  securities such as fixed income securities
(which may  be unrated),  convertible bonds,  convertible preferred  stocks  and
warrants  when relative values  make such purchases  appear attractive either as
individual issues or as  types of securities  in certain economic  environments.
The  Series may invest  in fixed income securities  rated lower than "investment
grade" (rated Ba or lower by  Moody's Investors Service, Inc. ("Moody's") or  BB
or  lower  by Standard  &  Poor's Ratings  Services  ("S&P") or  Fitch Investors
Service, Inc.  ("Fitch")) (commonly  known  as "junk  bonds") or  in  comparable
unrated securities, when, in the
    
 
                                       15
<PAGE>
   
opinion  of the Adviser,  such an investment presents  a greater opportunity for
appreciation with  comparable  risk  to  an  investment  in  "investment  grade"
securities. Under normal market conditions, the Series will invest not more than
25%  of its net assets in these  securities. For a description of these ratings,
see Appendix A to this Prospectus.
    
 
   
    Consistent with its investment objective  and policies described above,  the
Series  may also invest up to 50% (and generally expects to invest not more than
25%) of  its  net  assets  in  foreign  securities  (including  emerging  market
securities and Brady Bonds) which are not traded on a U.S. exchange. There is no
formula  as to the percentage of assets that  may be invested in any one type of
security. Cash, commercial paper, short-term obligations, repurchase  agreements
or  debt securities are held to provide  for future purchases of common stock or
other securities and may also be held as a temporary defensive measure when  the
Adviser determines security markets to be overvalued.
    
 
MFS  RESEARCH SERIES -- The Research  Series' investment objective is to provide
long-term growth of capital and future income.
 
    The portfolio  securities  of  the  Research  Series  are  selected  by  the
investment  research analysts in  the Equity Research Group  of the Adviser. The
Series' assets are allocated to  industry groups (E.G., pharmaceuticals,  retail
and  computer software). The  allocation by industry group  is determined by the
analysts acting together. Individual analysts are then responsible for selecting
what they view  as the  securities best suited  to meet  the Series'  investment
objective within their assigned industry group.
 
   
    The  Research Series'  policy is to  invest a substantial  proportion of its
assets in the  common stocks  or securities  convertible into  common stocks  of
companies  believed  to  possess  better than  average  prospects  for long-term
growth. A smaller proportion of the assets may be invested in bonds,  short-term
obligations, preferred stocks or common stocks whose principal characteristic is
income   production  rather  than   growth.  Such  securities   may  also  offer
opportunities for growth  of capital  as well  as income.  In the  case of  both
growth  stocks  and  income  issues,  emphasis is  placed  on  the  selection of
progressive,  well-managed   companies.   The   Series'   non-convertible   debt
investments,  if any, may consist of "investment grade" securities (rated Baa or
better by Moody's or BBB or better by S&P or by Fitch), and, with respect to  no
more  than  10%  of  the  Series' net  assets,  securities  in  the  lower rated
categories (rated Ba or lower by Moody's or  BB or lower by S&P or by Fitch)  or
securities  which the Adviser believes  to be of similar  quality to these lower
rated securities (commonly  known as "junk  bonds"). For a  description of  bond
ratings, see Appendix A to this Prospectus.
    
 
    Consistent  with its investment objective  and policies described above, the
Series may  also invest  up  to 20%  of its  net  assets in  foreign  securities
(including emerging market securities) which are not traded on a U.S. exchange.
 
MFS  GROWTH  WITH INCOME  SERIES --  The Growth  With Income  Series' investment
objectives are  to provide  reasonable current  income and  long-term growth  of
capital and income.
 
    Under normal market conditions, the Growth With Income Series will invest at
least  65% of its assets in common  stocks or securities convertible into common
stocks that are believed to have long-term prospects for growth and income.
 
    Consistent with its investment objective  and policies described above,  the
Series  may also invest up to 75% (and generally expects to invest not more than
15%) of  its  net  assets  in  foreign  securities  (including  emerging  market
securities and Brady Bonds) which are not traded on a U.S. exchange.
 
MFS TOTAL RETURN SERIES -- The Total Return Series' primary investment objective
is to provide above-average income (compared to a portfolio invested entirely in
equity  securities) consistent with  the prudent employment  of capital, and its
secondary objective is to provide a reasonable opportunity for growth of capital
and income, since many securities offering a better than average yield may  also
possess  growth potential. Thus, in selecting  securities for its portfolio, the
Series considers each of  these objectives. Under  normal market conditions,  at
least  25% of the Total  Return Series' assets will  be invested in fixed income
securities, and at least 40% and no more than 75% of the Series' assets will  be
invested in equity securities.
 
                                       16
<PAGE>
    The  Series' policy is  to invest in  a broad list  of securities, including
short-term obligations. The list  may be diversified not  only by companies  and
industries,  but also  by type of  security. Fixed income  securities and equity
securities (which  include:  common and  preferred  stocks; securities  such  as
bonds,  warrants  or  rights that  are  convertible into  stock;  and depositary
receipts for those  securities) may  be held by  the Series.  Some fixed  income
securities  may  also have  a  call on  common stock  by  means of  a conversion
privilege or attached warrants. The Total Return Series may vary the  percentage
of  assets invested in any one type of security in accordance with the Adviser's
interpretation of  economic and  money market  conditions, fiscal  and  monetary
policy  and underlying security values. The Series' debt investments may consist
of both "investment grade" securities (rated Baa or better by Moody's or BBB  or
better  by S&P or by Fitch) and securities  that are unrated or are in the lower
rating categories (rated  Ba or lower  by Moody's or  BB or lower  by S&P or  by
Fitch)  (commonly known as  "junk bonds") including  up to 20%  of its assets in
nonconvertible fixed income securities that are in these lower rating categories
and  comparable  unrated  securities  (see  "Additional  Risk  Factors"  below).
Generally,  most  of  the Series'  long-term  debt investments  will  consist of
"investment  grade"  securities.  See  Appendix  A  to  this  Prospectus  for  a
description of these ratings.
 
    The   Series  may  also  invest  in  United  States  government  securities,
including: (1) U.S. Treasury  obligations, which differ  only in their  interest
rates,  maturities and times of issuance: U.S. Treasury bills (maturities of one
year or less); U.S. Treasury  notes (maturities of one  to ten years); and  U.S.
Treasury  bonds (generally maturities  of greater than ten  years), all of which
are backed  by  the full  faith  and credit  of  the U.S.  Government;  and  (2)
obligations  issued or  guaranteed by  U.S. Government  agencies, authorities or
instrumentalities, 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 ("GNMA"); 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
(collectively,   "U.S.  Government  Securities").   The  term  "U.S.  Government
Securities" also includes  interests in  trusts or  other entities  representing
interests  in obligations that  are backed by  the full faith  and credit of the
U.S. Government  or  are  issued  or guaranteed  by  the  U.S.  Government,  its
agencies, authorities or instrumentalities.
 
    Consistent  with its investment objective  and policies described above, the
Series may  also invest  up  to 20%  of its  net  assets in  foreign  securities
(including emerging market securities and Brady Bonds) which are not traded on a
U.S. exchange.
 
MFS  UTILITIES SERIES --  The Utilities Series' investment  objective is to seek
capital growth and current income (income above that available from a  portfolio
invested entirely in equity securities).
 
    The  Utilities Series will seek to achieve its objective by investing, under
normal circumstances, at  least 65% (but  up to  100% at the  discretion of  the
Adviser)  of  its assets  in equity  and  debt securities  of both  domestic and
foreign companies  in the  utilities industry.  Equity securities  in which  the
Series   may  invest   include  common  stocks,   preferred  stocks,  securities
convertible into common  stocks or  preferred stocks, and  warrants to  purchase
common  or preferred  stocks. At least  80% of  the debt securities  held by the
Series will be rated at the time of investment at least Baa by Moody's or BBB by
S&P or by Fitch or  will be of comparable quality  as determined by the  Adviser
(see  "Additional Risk Factors" below). See Appendix  A to this Prospectus for a
description of these  ratings. The  Series may also  invest in  debt and  equity
securities  of issuers in  other industries, as  discussed below, although under
normal circumstances  not  more  than 35%  of  the  Series' assets  will  be  so
invested.  In addition, the Series may hold a  portion of its assets in cash and
money market instruments.
 
    Companies in the  utilities industry  include (i) companies  engaged in  the
manufacture,  production,  generation,  transmission,  sale  or  distribution of
electric, gas or  other types of  energy, water or  other sanitary services  and
(ii)  companies  engaged  in telecommunications,  including  telephone, cellular
telephones,  telegraph,  satellite,  microwave,   cable  television  and   other
communications  media (but  not companies  engaged in  public broadcasting). The
Adviser deems a particular company  to be in the  utilities industry if, at  the
time  of investment, the Adviser  determines that at least  50% of the company's
assets or revenues are derived from one or more of those industries. The portion
of the Utilities Series' assets invested in a particular
 
                                       17
<PAGE>
type of utility and in equity or  debt securities will vary in light of  changes
in  interest rates, market conditions and economic conditions and other factors.
For further information on  the principal sectors of  the utilities industry  in
which the Series may invest, see Appendix B to this Prospectus.
 
    Consistent  with its investment objective  and policies described above, the
Series may  also invest  up  to 35%  of its  net  assets in  foreign  securities
(including emerging market securities and Brady Bonds) which are not traded on a
U.S. exchange.
 
    Since   the  Utilities  Series'  investments  are  concentrated  in  utility
securities, the  value of  the Series'  shares will  be especially  affected  by
factors  peculiar to the utilities industry,  and may fluctuate more widely than
the value of shares of a fund that invests in a broader range of industries. The
rates many  utility  companies may  charge  their customers  are  controlled  by
governmental  regulatory commissions which may result  in a delay in the utility
company passing along increases in costs to its customers. Furthermore, there is
no assurance  that  regulatory  authorities  will, in  the  future,  grant  rate
increases  or that  such increases  will be  adequate to  permit the  payment of
dividends on common stocks. Many utility companies, especially electric and  gas
and   other   energy  related   utility  companies,   are  subject   to  various
uncertainties, including: risks of increases in fuel and other operating  costs;
the  high cost of borrowing to  finance capital construction during inflationary
periods; difficulty  obtaining adequate  returns on  invested capital,  even  if
frequent rate increases are approved by public service commissions; restrictions
on  operations and increased costs  and delays as a  result of environmental and
nuclear safety regulations; securing  financing for large construction  projects
during  an inflationary period; difficulties of the capital markets in absorbing
utility debt and equity  securities; difficulty in  raising capital in  adequate
amounts  on reasonable terms in periods  of high inflation and unsettled capital
markets; technological innovations which  may render existing plants,  equipment
or  products obsolete;  the potential impact  of natural  or man-made disasters;
difficulties in obtaining natural gas for resale or fuel for electric generation
at reasonable prices; coping  with the general  effects of energy  conservation,
particularly  in light of changing policies  regarding energy; and special risks
associated with  the  construction and  operation  of nuclear  power  generating
facilities,  including  technical factors  and costs,  and the  possibility that
federal, state and municipal government authorities may from time to time review
existing  requirements  and  impose  additional  requirements.  Certain  utility
companies,  especially gas and telephone utility companies, have in recent years
been affected  by  increased  competition,  which  could  adversely  affect  the
profitability  of such  utility companies. Furthermore,  there are uncertainties
resulting from certain  telecommunications companies'  diversification into  new
domestic  and  international  businesses  as well  as  agreements  by  many such
companies linking  future  rate increases  to  inflation or  other  factors  not
directly related to the active operating profits of the enterprise.
 
    Foreign  utility  companies are  also subject  to regulation,  although such
regulations may or may not be comparable to those in the United States.  Foreign
utility  companies may be more heavily regulated by their respective governments
than utilities in the U.S. and, as  in the U.S., generally are required to  seek
government  approval  for  rate  increases.  In  addition,  since  many  foreign
utilities use fuel that causes more pollution than those used in the U.S.,  such
utilities  may be required to invest in  pollution control equipment to meet any
proposed pollution restrictions. Foreign regulatory systems vary from country to
country and may evolve in ways different from regulation in the U.S.
 
    The Utilities Series is  permitted to invest in  securities of issuers  that
are outside the utilities industry, although under normal circumstances not more
than 35% of the Series' assets will be so invested. Such investments may include
common  stocks,  debt  securities  (including  municipal  debt  securities)  and
preferred stocks and will be selected  to meet the Series' investment  objective
of  both capital growth  and current income.  These securities may  be issued by
either U.S. or non-U.S.  companies. Some of these  issuers may be in  industries
related  to the  utilities industry  and, therefore,  may be  subject to similar
risks.
 
                                       18
<PAGE>
    Investments outside the utilities industry may also include U.S.  Government
Securities,   as  that  term   is  defined  under   "Investment  Objectives  and
Policies--MFS Total Return Series" above. When and if available, U.S. Government
Securities may be purchased at a  discount from face value. However, the  Series
does not intend to hold such securities to maturity for the purpose of achieving
potential  capital  gains,  unless  current  yields  on  the  securities  remain
attractive.
 
MFS HIGH INCOME SERIES -- The investment objective of the High Income Series  is
to  seek high current income by  investing primarily in a professionally managed
diversified portfolio  of fixed  income securities,  some of  which may  involve
equity features.
 
    Fixed  income securities offering the high current income sought by the High
Income Series  normally include  those  fixed income  securities which  offer  a
current  yield above  that generally available  on debt securities  in the three
highest rating categories of the  recognized rating agencies (commonly known  as
"junk  bonds" if  rated below the  four highest categories  of recognized rating
agencies). The  Series  may  invest  up  to 100%  of  its  net  assets  in  such
securities. For a description of these rating categories, see Appendix A to this
Prospectus  and Appendix  C for  a chart showing  the Series'  holdings of fixed
income securities broken  down by  rating category  as of  the end  of its  most
recent  fiscal  year.  (See  "Additional Risk  Factors"  below.)  However, since
available yields and yield  differentials vary over time,  no specific level  of
income  or yield  differential can  ever be assured.  The dividends  paid by the
Series will  increase or  decrease in  relation to  the income  received by  the
Series  from its investments, which would in any case be reduced by the expenses
of the Series before such income is distributed to its shareholders.
 
    Fixed income  securities include  preferred and  preference stocks  and  all
types  of debt obligations of both domestic  and foreign issuers, such as bonds,
debentures, notes, equipment  lease certificates,  equipment trust  certificates
(including interests in trusts or other entities representing such obligations),
conditional   sales  contracts,  commercial  paper  and  obligations  issued  or
guaranteed by  the U.S.  Government,  any foreign  government  or any  of  their
respective  political  subdivisions,  agencies  or  instrumentalities (including
obligations, such as repurchase agreements, secured by instruments).
 
    Corporate debt securities may bear fixed, fixed and contingent, or  variable
rates  of  interest  and may  involve  equity  features, such  as  conversion or
exchange rights  or warrants  for the  acquisition of  stock of  the same  or  a
different  issuer; participations  based on revenues,  sales or  profits; or the
purchase of common stock in a unit transaction (where corporate debt  securities
and  common stock are  offered as a  unit). Under normal  market conditions, not
more than 25% of the value of the total assets of the High Income Series will be
invested in equity securities, including common stocks, warrants and rights.
 
    Consistent with its investment objective  and policies described above,  the
Series  may also invest up to 25% (and generally expects to invest not more than
10%) of  its  net  assets  in  foreign  securities  (including  emerging  market
securities  and Brady Bonds) which are not traded on a U.S. exchange. The Series
has authority to invest up  to 25% of its total  assets in securities issued  or
guaranteed  by foreign governments or  their agencies or instrumentalities. (See
"Additional Risk Factors" below.)
 
    The High Income Series may invest up to 40% of the value of its total assets
in each of the  electric utility and telephone  industries, but will not  invest
more  than 25% in  either of those  industries unless yields  available for four
consecutive weeks in the  four highest rating categories  on new issue bonds  in
such  industry (issue size  of $50 million  or more) have  averaged in excess of
105% of yields of  new issue long-term industrial  bonds similarly rated  (issue
size  of $50 million or  more) and, in the opinion  of the Adviser, the relative
return available  from  the  electric  utility or  telephone  industry  and  the
relative  risk, marketability,  quality and  availability of  securities of such
industry justifies such an investment.
 
    When and  if  available, fixed  income  securities  may be  purchased  at  a
discount  from face value.  However, the High  Income Series does  not intend to
hold such securities to maturity for the purpose of achieving potential  capital
gains, unless
 
                                       19
<PAGE>
current  yields on  these securities  remain attractive.  From time  to time the
Series may purchase securities not paying  interest at the time acquired if,  in
the opinion of the Adviser, such securities have the potential for future income
or capital appreciation.
 
MFS  WORLD  GOVERNMENTS  SERIES  --  The  World  Governments  Series' investment
objective is to seek not only preservation, but also growth of capital, together
with moderate current income.
 
    The World  Governments  Series seeks  to  achieve its  investment  objective
through   a  professionally   managed,  internationally   diversified  portfolio
consisting  primarily  of  debt  securities  and  to  a  lesser  extent   equity
securities.  The Series  attempts to  provide investors  with an  opportunity to
enhance the  value  and increase  the  protection of  their  investment  against
inflation  and otherwise by taking advantage  of investment opportunities in the
U.S. as well as in other countries where opportunities may be more rewarding. It
is believed that diversification of  assets on an international basis  decreases
the  degree to which events  in any one country,  including the U.S., can affect
the entire portfolio. Although the percentage of the Series' assets invested  in
securities  issued  abroad  and  denominated  in  foreign  currencies  will vary
depending on the state of the economies of the principal countries of the world,
their financial markets  and the relationship  of their currencies  to the  U.S.
dollar,  under  normal  conditions  the  Series'  portfolio  is  internationally
diversified. However,  for  temporary  defensive  reasons  or  during  times  of
international  political or economic uncertainty or  turmoil, most or all of the
Series' investments may be in the U.S.
 
    Under normal economic  and market conditions,  at least 80%  of the  Series'
portfolio  is invested in  debt securities, such  as bonds, debentures, mortgage
securities, notes,  commercial  paper, obligations  issued  or guaranteed  by  a
government  or any of its political subdivisions, agencies or instrumentalities,
certificates of deposit, as well  as debt obligations which  may have a call  on
common stock by means of a conversion privilege or attached warrants.
 
    Consistent  with its investment objective  and policies described above, the
Series may invest up to 100% (and generally expects to invest not more than 80%)
of its net assets  in foreign securities  (including emerging market  securities
and  Brady  Bonds)  which  are  not traded  on  a  U.S.  exchange.  Although the
percentage of the Series'  assets invested in foreign  securities will vary,  at
least  65% of the  Series' assets will  be invested in  at least three different
countries, one of which may be the  U.S., except when the Adviser believes  that
investing  for  temporary defensive  purposes is  appropriate. The  Adviser will
determine the amount of the World  Governments Series' assets to be invested  in
the  U.S. and the amount to be invested abroad. The U.S. assets will be invested
in high  quality  debt  securities and  the  remainder  of the  assets  will  be
diversified among countries where opportunities for total return are expected to
be  most attractive.  It is currently  expected that  investments within foreign
countries will be primarily in  government securities to minimize credit  risks.
The  Series  will not  invest 25%  or more  of the  value of  its assets  in the
securities of any one foreign government. The portfolio will be managed actively
and the asset allocations modified as the Adviser deems necessary.
 
    The World Governments Series will purchase non-dollar securities denominated
in the currency of countries where the interest rate environment as well as  the
general economic climate provide an opportunity for declining interest rates and
currency  appreciation. If  interest rates  decline, such  non-dollar securities
will appreciate in value. If the  currency also appreciates against the  dollar,
the  total investment in  such non-dollar securities  would be enhanced further.
Conversely, a rise in interest rates or decline in currency exchange rates would
adversely affect  the  Series'  return. Investments  in  non-dollar  denominated
securities  are evaluated  primarily on  the strength  of a  particular currency
against the dollar and on the interest rate climate of that country. Currency is
judged on the basis of  fundamental economic criteria (E.G., relative  inflation
levels  and  trends,  growth rate  forecasts,  balance of  payments  status, and
economic policies) as well as technical  and political data. In addition to  the
foregoing,  interest  rates  are  evaluated on  the  basis  of  differentials or
anomalies that  may  exist between  different  countries. The  Series  may  hold
foreign  currency received in connection  with investments in foreign securities
and in  anticipation of  purchasing foreign  securities. (See  "Additional  Risk
Factors" below.)
 
    The  phrase "preservation of capital" when  applied to a domestic investment
company is generally understood to imply that the portfolio is invested in  very
low  risk securities and that the major risk is loss of purchasing power through
the effects
 
                                       20
<PAGE>
of inflation  or major  changes  in interest  rates.  However, while  the  World
Governments  Series invests  in securities  which are  believed to  have minimal
credit risk, an error of  judgment in selecting a  currency or an interest  rate
environment could result in a loss of capital.
 
    It  is  contemplated  that  the  World  Governments  Series'  long-term debt
investments will  consist primarily  of  securities which  are believed  by  the
Adviser  to be of relatively high quality.  If after the Series purchases such a
security, the quality of the  security deteriorates significantly, the  security
will be sold only if the Adviser believes it is advantageous to do so.
 
MFS  STRATEGIC  FIXED  INCOME  SERIES  --  The  Strategic  Fixed  Income Series'
investment objective is to maximize current income.
 
    The Strategic  Fixed  Income  Series  seeks  to  achieve  its  objective  by
investing approximately one-third of its assets in each of the following sectors
of  the fixed income securities markets: (i) U.S. Government Securities, as that
term is defined in "Investment Objectives and Policies--MFS Total Return Series"
above and related options; (ii)  debt securities issued by foreign  governments,
their  political subdivisions and other foreign issuers; and (iii) high yielding
corporate fixed income securities, some of which may involve equity features. By
following this investment strategy, the Series' net asset value is likely to  be
more  stable than that of a fund which  invests in only one of these three fixed
income sectors. The Adviser believes that greater stability would occur because,
in general, each sector  historically has produced  results which are  different
from each other sector, so that significant changes in one sector have tended to
offset  changes in other  sectors. During periods of  unusual market or economic
conditions (such as a collapse of  the high yield corporate fixed income  market
or  a  general contraction  in yields  on foreign  obligations), the  Series may
invest up to 50% of its assets in any one sector and may choose not to invest in
a sector in order to achieve its investment objective. The Series expects  that,
under  normal market conditions,  the maturity of  its portfolio securities will
not exceed 30 years in the U.S. Government sector and 25 years in the  corporate
fixed   income  sector.  At  least  80%  of  the  Series'  assets  under  normal
circumstances will be invested in fixed income securities. The Series may invest
up to 100% of  its net assets  in debt securities rated  below the four  highest
categories of recognized rating agencies (commonly known as "junk bonds").
 
    Consistent  with its investment objective  and policies described above, the
Series does not intend to invest over  50%, but reserves the right to invest  up
to  67%,  of its  net assets  in foreign  securities (including  emerging market
securities and  Brady Bonds)  which are  not traded  on a  U.S. exchange.  These
foreign  securities  shall  include  securities  issued  by  foreign governments
considered stable  by  the  Adviser  and  fixed  income  securities  of  foreign
corporations.  The foreign government securities in  which the Series intends to
invest will generally consist of obligations supported though their authority to
levy taxes by  national, state  or provincial governments  or similar  political
subdivisions. While one-third of the Series' assets normally will be invested in
securities  issued  abroad and  denominated  in foreign  currencies ("non-dollar
securities"), that  amount may  vary depending  on the  relative yield  of  such
securities, the economies of the countries in which the investments are made and
such  countries' financial markets, the interest  rate climate of such countries
and  the  relationship  of  such  countries'  currencies  to  the  U.S.  dollar.
Investments in non-dollar securities and currency will be evaluated on the basis
of  fundamental economic criteria  (E.G., relative inflation  levels and trends,
growth rate forecasts,  balance of  payments status, and  economic policies)  as
well  as technical  and political data.  In addition to  the foregoing, interest
rates are evaluated on  the basis of differentials  or anomalies that may  exist
between  different countries. The  Series may hold  foreign currency for hedging
purposes to  protect  against declines  in  the  U.S. dollar  value  of  foreign
securities  held by the Series and against increases in the U.S. dollar value of
the foreign securities which the Series might purchase. The Series may speculate
in foreign currency when, in the judgment of the Adviser, it would be beneficial
to convert such currency into U.S. dollars at a later date, based on anticipated
changes  in  the  relevant  exchange  rate.  (See  "Investment  Techniques"  and
"Additional Risk Factors" below.)
 
    High  yield corporate fixed  income securities of  both domestic and foreign
issuers (denominated either in  U.S. dollars or foreign  currency) in which  the
Strategic  Fixed Income Series may invest include preferred and preference stock
and all types
 
                                       21
<PAGE>
of long-  or short-term  debt  obligations, such  as bonds,  debentures,  notes,
equipment  lease certificates,  equipment trust  certificates, conditional sales
contracts and  commercial  paper  (including  obligations,  such  as  repurchase
agreements,  secured  by such  instruments). High  yield corporate  fixed income
securities held by  the Series  are ordinarily unrated  or in  the lower  rating
categories of recognized rating agencies. (See "Additional Risk Factors" below.)
Corporate   fixed  income  securities  may  involve  equity  features,  such  as
conversion or exchange rights  or warrants for the  acquisition of stock of  the
same  or a different issuer; participations based on revenues, sales or profits;
or the purchase  of common  stock in a  unit transaction  (where corporate  debt
securities and common stock are offered as a unit).
 
    The  Strategic Fixed Income Series may invest up  to 40% of the value of its
total assets in each of the electric utility and telephone industries, but  will
not  invest more than 25% in either  of those industries unless yields available
for four consecutive weeks  in the four highest  rating categories on new  issue
bonds  in such  industry (issue size  of $50  million or more)  have averaged in
excess of 105% of yields of new issue long-term industrial bonds similarly rated
(issue size of $50 million or more).
 
MFS BOND SERIES -- The Bond  Series' primary investment objective is to  provide
as  high a level of current income as  is believed to be consistent with prudent
investment risk. The  Series' secondary  objective is  to protect  shareholders'
capital.
 
    The  Series seeks  to achieve its  investment objective  by investing, under
normal market conditions, at least 65% of its total assets in:
 
    (1) convertible and non-convertible debt securities and preferred stocks;
 
    (2) U.S. Government  Securities, as  defined in  "Investment Objectives  and
       Policies--MFS Total Return Series" above; and
 
    (3)  commercial paper,  repurchase agreements  and cash  or cash equivalents
       (such as certificates of deposit and bankers' acceptances).
 
    Not more than 20% of the Series'  net assets will be invested in  securities
rated below the four highest grades of S&P, Fitch (AAA, AA, A or BBB) or Moody's
(Aaa,  Aa, A  or Baa)  and comparable unrated  securities. For  a description of
these ratings see  Appendix A  to this  Prospectus and  Appendix C  for a  chart
showing  the Series' holdings  of fixed income securities  broken down by rating
category as of the end of its most  recent fiscal year. For a discussion of  the
risks of investing in these securities see "Additional Risk Factors" below.
 
    Although the Bond Series may purchase Canadian and other foreign securities,
under normal market conditions, it may not invest more than 10% of its assets in
non-dollar  denominated  non-Canadian  foreign  securities,  including  emerging
market securities and Brady Bonds. The Series may hold foreign currency received
in connection  with investments  in  foreign securities  or in  anticipation  of
purchasing foreign securities. (See "Investment Techniques" and "Additional Risk
Factors" below.)
 
    The Bond Series may not directly purchase common stocks. However, the Series
may  retain up to 10%  of its total assets in  common stocks which were acquired
either by conversion of fixed income  securities or by the exercise of  warrants
attached thereto.
 
MFS  LIMITED MATURITY SERIES -- The  Limited Maturity Series' primary investment
objective is to provide as high a level  of current income as is believed to  be
consistent  with prudent investment risk. The  Series' secondary objective is to
protect shareholders' capital.
 
                                       22
<PAGE>
    In seeking to achieve its investment objectives, the Limited Maturity Series
invests,  under normal  market conditions, substantially  all its  assets in the
following securities:
 
    1.    Debt  securities  (including  corporate  asset-backed  securities  and
       mortgage  pass-through securities  discussed below)  which have  a rating
       within the four highest grades as determined by S&P or Fitch (AAA, AA,  A
       or BBB) or Moody's (Aaa, Aa, A or Baa) and comparable unrated securities;
       for  a description  of these  rating categories,  see Appendix  A to this
       Prospectus;
 
    2.  U.S.  Government Securities,  as defined in  "Investment Objectives  and
       Policies--MFS Total Return Series" above; or
 
    3.   Commercial paper, repurchase agreements, cash or cash equivalents (such
       as certificates of deposit and bankers' acceptances).
 
    The Limited Maturity Series will only invest in securities rated within  the
four  highest grades, as determined  by S&P or Moody's  or Fitch, and comparable
unrated securities.  In addition,  the dollar-weighted  average quality  of  the
Series  will be within the three highest grades, as determined by S&P or Moody's
or Fitch (or the Adviser in the case of unrated securities).
 
    Under normal  market conditions,  substantially all  the securities  in  the
Series'  portfolio  will have  remaining  maturities of  five  years or  less or
estimated remaining  average  lives  of five  years  or  less. In  the  case  of
mortgage-backed  and corporate asset-backed securities as well as collateralized
mortgage obligations, the  average life  is likely to  be substantially  shorter
than the stated final maturity as a result of unscheduled principal prepayments.
 
    For purposes of the foregoing investment policy, securities having a certain
maturity  will be deemed to include  securities with an equivalent "duration" of
such securities. "Duration"  is a commonly  used measure of  the longevity of  a
debt  instrument that takes into account the full stream of payments received on
a debt  instrument, including  both interest  and principal  payments, based  on
their  present values.  A debt instrument's  duration is  derived by discounting
principal and interest payments  to their present  value using the  instrument's
current  yield to  maturity and  taking the  dollar-weighted average  time until
those payments will  be received. Contractual  rights to dispose  of a  security
will  be considered in calculating duration because such rights limit the period
during which the Series bears a market risk with respect to the security.
 
    The Limited Maturity Series  may invest up  to 25% of  its assets in  dollar
denominated foreign debt securities which may include emerging market securities
and  Brady  Bonds.(See  "Investment Techniques"  and  "Additional  Risk Factors"
below.)
 
MFS MONEY MARKET SERIES -- The  Money Market Series' investment objective is  to
seek  as high  a level of  current income  as is considered  consistent with the
preservation of capital and liquidity.
 
    The Money  Market  Series  seeks  to achieve  its  investment  objective  by
investing   primarily  (I.E.,   at  least  80%   of  its   assets  under  normal
circumstances) in the following instruments:
 
        (a) U.S. Government Securities, as defined in "Investment Objectives and
    Policies--MFS Total Return  Series" above  (including repurchase  agreements
    collateralized by such securities);
 
        (b) obligations of banks (including certificates of deposit and bankers'
    acceptances)  which at  the date  of investment  have capital,  surplus, and
    undivided profits (as of the date of their most recently published financial
    statements) in excess  of $100,000,000;  and obligations of  other banks  or
    savings and loan associations if such obligations are insured by the Federal
    Deposit  Insurance  Corporation,  provided that  not  more than  10%  of the
    Series' total assets will be invested in such insured obligations;
 
                                       23
<PAGE>
        (c) commercial paper which at the date of investment is rated A-1 by S&P
    or by Fitch or P-1 by Moody's or,  if not rated, is issued or guaranteed  as
    to  payment of  principal and  interest by  companies which  at the  date of
    investment have an outstanding debt  issue rated AA or  better by S&P or  by
    Fitch  or Aa or better  by Moody's (for a  description of these ratings, see
    Appendix A to this Prospectus); and
 
        (d) short-term (maturing  in 13  months or  less) corporate  obligations
    which at the date of investment are rated AA or better by S&P or by Fitch or
    Aa or better by Moody's.
 
    The  Money Market Series  may also invest up  to 20% of  its total assets in
debt instruments not specifically described  in (a) through (d) above,  provided
that  such  instruments  are  deemed by  the  Trustees  of the  Trust  to  be of
comparable high quality and liquidity and provided that such investments are  in
accordance with applicable law. The Money Market Series may invest its assets in
the  securities of foreign issuers and in  the securities of foreign branches of
U.S. banks such as negotiable  certificates of deposit (Eurodollars). Since  the
portfolio of the Series may contain such securities, an investment in the Series
may  involve a greater degree of risk than an investment in a fund which invests
only in debt obligations of U.S.  domestic issuers, due to the possibility  that
there  may be less  publicly available information,  more volatile markets, less
securities regulation, less favorable tax provisions, war or expropriation. (See
"Additional Risk Factors" below.)
 
    In addition, the Money Market Series may  invest up to 75% of its assets  in
all  finance companies  as a group,  all banks  and bank holding  companies as a
group and all utility companies as a  group when, in the opinion of  management,
yield  differentials and  money market  conditions suggest  such investments are
advisable and when cash  is available for such  investments and instruments  are
available  for purchase which fulfill the  Series' objective in terms of quality
and marketability.
 
    All the assets of  the Money Market Series  will be invested in  obligations
which  mature in 13  months or less  and substantially all  of these investments
will  be  held  to  maturity;  however,  securities  collateralizing  repurchase
agreements  may have maturities in excess of  13 months. The Money Market Series
will,  to  the  extent  feasible,   make  portfolio  investments  primarily   in
anticipation  of or in response to changing economic and money market conditions
and trends. Currently, the dollar-weighted  average maturity of the  investments
of the Series may not exceed 90 days.
 
5.  INVESTMENT TECHNIQUES
 
    LENDING  OF  PORTFOLIO  SECURITIES:  Each Series  (except  the  Money Market
Series) may seek to  increase its income by  lending portfolio securities.  Such
loans will usually be made to member firms (and subsidiaries thereof) of the New
York  Stock Exchange (the "Exchange") and to member banks of the Federal Reserve
System, and would be required to be secured continuously by collateral in  cash,
U.S.  Treasury securities  or an  irrevocable letter  of credit  maintained on a
current basis at an amount at least equal to the market value of the  securities
loaned.  If the Adviser determines to make securities loans, it is intended that
the value of the securities loaned would not exceed 10% of the value of the  net
assets of the Series making the loans.
 
    EMERGING  MARKET  SECURITIES: Consistent  with their  respective objectives,
each Series (except the Money Market Series) may invest in securities of issuers
whose principal activities  are located in  emerging market countries.  Emerging
market  countries  include any  country  determined by  the  Adviser to  have an
emerging market  economy, taking  into account  a number  of factors,  including
whether  the  country has  a low-  to  middle- income  economy according  to the
International Bank  for Reconstruction  and Development,  the country's  foreign
currency  debt rating, its political and  economic stability and the development
of its financial and capital markets. The Adviser determines whether an issuer's
principal activities are located  in an emerging  market country by  considering
such  factors as its  country of organization, the  principal trading market for
its securities and the source of its revenues and assets. The issuer's principal
activities generally are deemed  to be located in  a particular country if:  (a)
the security is issued or guaranteed by the government of that country or any of
its  agencies,  authorities or  instrumentalities; (b)  the issuer  is organized
under  the  laws  of,  and  maintains  a  principal  office  in  that   country;
 
                                       24
<PAGE>
(c)  the issuer has its principal securities trading market in that country; (d)
the issuer derives 50% or more of its total revenues from goods sold or services
performed in that country; or  (e) the issuer has 50%  or more of its assets  in
that country.
 
    BRADY  BONDS:  Each  Series (except  the  Research Series  and  Money Market
Series) may invest  in Brady  Bonds, which  are securities  created through  the
exchange  of existing  commercial bank loans  to public and  private entities in
certain emerging markets for  new bonds in  connection with debt  restructurings
under  a  debt restructuring  plan introduced  by former  U.S. Secretary  of the
Treasury, Nicholas F. Brady (the  "Brady Plan"). Brady Plan debt  restructurings
have  been  implemented  to date  in  Argentina, Brazil,  Bulgaria,  Costa Rica,
Dominican Republic, Ecuador, Jordan,  Mexico, Nigeria, Panama, the  Philippines,
Poland,  Uruguay and Venezuela. Brady Bonds  have been issued only recently, and
for that  reason  do  not have  a  long  payment history.  Brady  Bonds  may  be
collateralized  or  uncollateralized,  are  issued  in  various  currencies (but
primarily the U.S. dollar) and are actively traded in over-the-counter secondary
markets. U.S.  dollar-denominated,  collateralized  Brady Bonds,  which  may  be
fixed-rate bonds or floating-rate bonds, are generally collateralized in full as
to  principal by U.S. Treasury zero coupon bonds having the same maturity as the
bonds.  Brady  Bonds  are  often  viewed  as  having  three  or  four  valuation
components:  the collateralized  repayment of  principal at  final maturity; the
collateralized interest payments;  the uncollateralized  interest payments;  and
any  uncollateralized repayment of principal at maturity (these uncollateralized
amounts constituting the  "residual risk").  In light  of the  residual risk  of
Brady  Bonds and the history  of defaults of countries  issuing Brady Bonds with
respect to commercial bank loans by public and private entities, investments  in
Brady Bonds may be viewed as speculative.
 
    REPURCHASE  AGREEMENTS: Each Series may  enter into repurchase agreements in
order to earn  income on  available cash or  as a  temporary defensive  measure.
Under  a  repurchase  agreement, a  Series  acquires securities  subject  to the
seller's agreement to repurchase  at a specified time  and price. If the  seller
becomes  subject to  a proceeding  under the bankruptcy  laws or  its assets are
otherwise subject to a stay order, the Series' right to liquidate the securities
may be restricted (during which time the value of the securities could decline).
As discussed in the SAI, each Series has adopted certain procedures intended  to
minimize risk.
 
    "WHEN-ISSUED" SECURITIES: Each Series (except the Research Series, the World
Governments  Series and  the Money Market  Series) may purchase  securities on a
"when-issued" or on a "forward delivery" basis, which means that the  securities
will  be  delivered to  the Series  at  a future  date usually  beyond customary
settlement time. The commitment to purchase a security for which payment will be
made on a future date  may be deemed a separate  security. In general, a  Series
does  not pay  for such  securities until received,  and does  not start earning
interest on the securities until the contractual settlement date. While awaiting
delivery of securities purchased on such bases, a Series will normally invest in
cash, cash equivalents and high grade debt securities.
 
    MORTGAGE "DOLLAR ROLL" TRANSACTIONS:  Each of the  Total Return Series,  the
Bond  Series, the Strategic  Fixed Income Series,  the World Governments Series,
the Limited Maturity Series, the High Income Series and the Utilities Series may
enter  into  mortgage  "dollar  roll"  transactions  with  selected  banks   and
broker-dealers  pursuant to which a  Series sells mortgage-backed securities for
delivery in the future (generally  within 30 days) and simultaneously  contracts
to  repurchase substantially similar (same type, coupon and maturity) securities
on a specified  future date.  A Series  will only  enter into  covered rolls.  A
"covered  roll"  is  a  specific type  of  dollar  roll for  which  there  is an
offsetting cash position or a cash equivalent security position which matures on
or before the  forward settlement date  of the dollar  roll transaction. In  the
event  that the  party with whom  the Series contracts  to replace substantially
similar securities on a future date fails to deliver such securities, the Series
may not  be able  to  obtain such  securities at  the  price specified  in  such
contract  and  thus may  not  benefit from  the  price differential  between the
current sales price and the repurchase price.
 
   
    RESTRICTED SECURITIES: Each  Series (except the  Growth With Income  Series)
may purchase securities that are not registered under the Securities Act of 1933
(the  "1933 Act") ("restricted securities"), including those that can be offered
and
    
 
                                       25
<PAGE>
sold to "qualified  institutional buyers"  under Rule  144A under  the 1933  Act
("Rule 144A securities"). The Trust's Board of Trustees determines, based upon a
continuing  review of  the trading  markets for  a specific  Rule 144A security,
whether such security is liquid and  thus not subject to the Series'  limitation
on  investing not more than 15% of its net  assets (not more than 10% of its net
assets in the  case of  the Money Market  Series) in  illiquid investments.  The
Board of Trustees has adopted guidelines and delegated to MFS the daily function
of  determining and monitoring the liquidity of Rule 144A securities. The Board,
however, will retain sufficient oversight and be ultimately responsible for  the
determinations.  The Board  will carefully  monitor each  Series' investments in
Rule 144A  securities, focusing  on  such important  factors, among  others,  as
valuation,  liquidity and availability of  information. This investment practice
could have the effect of  decreasing the level of liquidity  in a Series to  the
extent  that qualified  institutional buyers become  for a  time uninterested in
purchasing Rule 144A securities held in the Series' portfolio.
 
    CORPORATE ASSET-BACKED SECURITIES: Each of  the Emerging Growth Series,  the
Total  Return Series,  the Bond  Series, the  Limited Maturity  Series, the High
Income Series, the Strategic  Fixed Income Series and  the Utilities Series  may
invest  in corporate asset-backed securities. These securities, issued by trusts
and special purpose corporations, are backed by a pool of assets, such as credit
card and automobile loan receivables,  representing the obligations of a  number
of different parties.
 
    Corporate  asset-backed securities  present certain risks.  For instance, in
the case of credit card receivables,  these securities may not have the  benefit
of  any security interest in the related collateral. Credit card receivables are
generally unsecured and the debtors are  entitled to the protection of a  number
of  state and federal consumer credit laws,  many of which give such debtors the
right to set off certain amounts owed on the credit cards, thereby reducing  the
balance  due. Most  issuers of  automobile receivables  permit the  servicers to
retain possession of the  underlying obligations. If the  servicer were to  sell
these  obligations to another  party, there is  a risk that  the purchaser would
acquire an interest superior  to that of the  holders of the related  automobile
receivables.  In addition, because of the large number of vehicles involved in a
typical issuance and technical  requirements under state  laws, the trustee  for
the  holders  of  the automobile  receivables  may  not have  a  proper security
interest in all of the obligations backing such receivables. Therefore, there is
the possibility  that recoveries  on  repossessed collateral  may not,  in  some
cases,  be available  to support  payments on  these securities.  The underlying
assets  (E.G.,  loans)  are  also  subject  to  prepayments  which  shorten  the
securities' weighted average life and may lower their return.
 
    Corporate  asset-backed  securities are  often backed  by  a pool  of assets
representing the obligations  of a number  of different parties.  To lessen  the
effect  of  failures by  obligors  on underlying  assets  to make  payments, the
securities  may  contain  elements  of  credit  support  which  fall  into   two
categories:  (i)  liquidity  protection;  and  (ii)  protection  against  losses
resulting from  ultimate  default  by  an  obligor  on  the  underlying  assets.
Liquidity  protection  refers to  the provision  of  advances, generally  by the
entity administering the pool of assets, to ensure that the receipt of  payments
on  the underlying  pool occurs in  a timely fashion.  Protection against losses
resulting from ultimate  default ensures payment  through insurance policies  or
letters of credit obtained by the issuer or sponsor from third parties. A Series
will  not pay any additional or separate  fees for credit support. The degree of
credit support  provided  for  each  issue  is  generally  based  on  historical
information  respecting the level of credit  risk associated with the underlying
assets. Delinquency or  loss in  excess of that  anticipated or  failure of  the
credit  support could  adversely affect  the return on  an investment  in such a
security.
 
   
    ZERO COUPON BONDS, DEFERRED INTEREST BONDS AND PIK BONDS: Each of the  Value
Series,  the Total  Return Series, the  Bond Series, the  Strategic Fixed Income
Series, the World Governments Series, the Growth With Income Series, the Limited
Maturity Series, the High Income Series  and the Utilities Series may invest  in
zero  coupon bonds. The Value  Series, the Total Return  Series, the Bond Series
and the High Income Series  may also invest in  deferred interest bonds and  PIK
bonds.  Zero coupon and  deferred interest bonds are  debt obligations which are
issued or purchased  at a  significant discount  from face  value. The  discount
approximates  the total  amount of interest  the bonds will  accrue and compound
over the period until maturity or the  first interest payment date at a rate  of
interest  reflecting the market  rate of the  security at the  time of issuance.
While zero  coupon  bonds do  not  require  the periodic  payment  of  interest,
deferred interest bonds provide for a period of delay
    
 
                                       26
<PAGE>
before  the regular payment  of interest begins. PIK  bonds are debt obligations
which provide that the issuer thereof may,  at its option, pay interest on  such
bonds  in cash or in  the form of additional  debt obligations. Such investments
benefit the issuer by  mitigating its need  for cash to  meet debt service,  but
also  require a higher  rate of return  to attract investors  who are willing to
defer receipt of such cash.  Such investments may experience greater  volatility
in  market value due  to changes in  interest rates than  debt obligations which
make regular  payments of  interest.  Each Series  will  accrue income  on  such
investments for tax and accounting purposes, as required, which is distributable
to  shareholders and which, because no cash  is received at the time of accrual,
may require the liquidation of other portfolio securities to satisfy the Series'
distribution obligations.
 
    COLLATERALIZED MORTGAGE OBLIGATIONS AND MULTICLASS PASS-THROUGH  SECURITIES:
Each  of  the  Bond  Series,  the  Strategic  Fixed  Income  Series,  the  World
Governments Series, the Limited Maturity Series, the High Income Series and  the
Utilities  Series may invest a portion  of its assets in collateralized mortgage
obligations or "CMOs,"  which are  debt obligations  collateralized by  mortgage
loans or mortgage pass-through securities. Typically, CMOs are collateralized by
certificates  issued by GNMA, the Federal National Mortgage Association ("FNMA")
or the  Federal  Home Loan  Mortgage  Corporation  ("FHLMC"), but  also  may  be
collateralized  by whole loans or private mortgage pass-through securities (such
collateral collectively referred to as "Mortgage Assets"). Each of these  Series
may  also invest a  portion of its assets  in multiclass pass-through securities
which are interests in a trust composed of Mortgage Assets. CMOs (which  include
multiclass  pass-through securities) may  be issued by  agencies, authorities or
instrumentalities of  the  U.S. Government  or  by private  originators  of,  or
investors  in, mortgage loans, including savings and loan associations, mortgage
banks, commercial banks,  investment banks and  special purpose subsidiaries  of
the foregoing. Payments of principal of and interest on the Mortgage Assets, and
any  reinvestment income thereon, provide  the funds to pay  debt service on the
CMOs or make scheduled distributions on the multiclass pass-through  securities.
In  a CMO,  a series  of bonds  or certificates  are usually  issued in multiple
classes with different maturities.  Each class of CMOs,  often referred to as  a
"tranche,"  is issued  at a  specific fixed  or floating  coupon rate  and has a
stated maturity  or  final  distribution  date.  Principal  prepayments  on  the
Mortgage  Assets may  cause the  CMOs to  be retired  substantially earlier than
their stated maturities or final distribution dates, resulting in a loss of  all
or  part of  the premium  if any  has been  paid. Certain  classes of  CMOs have
priority over  others  with  respect  to  the  receipt  of  prepayments  on  the
mortgages.  Therefore, depending on the type of  CMOs in which a Series invests,
the investment may be subject  to a greater or  lesser risk of prepayments  than
other types of mortgage-related securities.
 
    Each  of  the Bond  Series,  the Strategic  Fixed  Income Series,  the World
Governments Series, the Limited Maturity Series, the High Income Series and  the
Utilities  Series may also invest in  parallel pay CMOs and Planned Amortization
Class CMOs ("PAC Bonds"). Parallel pay  CMOs are structured to provide  payments
of  principal on each payment  date to more than  one class. PAC Bonds generally
require payments of a  specified amount of principal  on each payment date.  PAC
Bonds  are always parallel pay CMOs with  the required principal payment on such
securities having  the highest  priority after  interest has  been paid  to  all
classes.  For a further description of CMOs, parallel pay CMOs and PAC Bonds and
the risks related to transactions therein, see the SAI.
 
    STRIPPED MORTGAGE-BACKED SECURITIES: Each of the Bond Series, the  Strategic
Fixed Income Series, the World Governments Series and the High Income Series may
invest  a portion of its assets in stripped mortgage-backed securities ("SMBS"),
which are derivative multiclass mortgage securities usually structured with  two
classes   that  receive   different  proportions   of  interest   and  principal
distributions from  an  underlying  pool  of  mortgage  assets.  For  a  further
description of SMBS and the risks related to transactions therein, see the SAI.
 
   
    LOAN  PARTICIPATIONS  AND  OTHER DIRECT  INDEBTEDNESS:  The  Emerging Growth
Series, the Value Series,  the Total Return Series,  the High Income Series  and
the  Strategic Fixed Income Series  may invest a portion  of its assets in "loan
participations"  and   other  direct   indebtedness.   By  purchasing   a   loan
participation,  a Series acquires some or all of the interest of a bank or other
lending institution  in a  loan to  a corporate  borrower. Many  such loans  are
secured,    and   most    impose   restrictive    covenants   which    must   be
    
 
                                       27
<PAGE>
met  by the borrower. These loans are made generally to finance internal growth,
mergers, acquisitions, stock repurchases, leveraged buy-outs and other corporate
activities. Such loans may be in default  at the time of purchase. A Series  may
also  purchase other direct  indebtedness such as trade  or other claims against
companies, which generally represent money owed by the company to a supplier  of
goods  and  services. These  claims may  also be  purchased at  a time  when the
company is  in default.  Certain of  the loan  participations and  other  direct
indebtedness  acquired by  a Series may  involve revolving  credit facilities or
other standby financing commitments  which obligate a  Series to pay  additional
cash on a certain date or on demand.
 
    The highly leveraged nature of many such loans and other direct indebtedness
may  make such  loans especially  vulnerable to  adverse changes  in economic or
market conditions. Loan participations and other direct indebtedness may not  be
in  the form of  securities or may  be subject to  restrictions on transfer, and
only limited opportunities may exist to resell such instruments. As a result,  a
Series  may be unable to sell such investments  at an opportune time or may have
to resell them at less than fair market value. For a further discussion of  loan
participations,  other direct indebtedness and the risks related to transactions
therein, see the SAI.
 
    MORTGAGE PASS-THROUGH SECURITIES: Each of the Total Return Series, the  Bond
Series,  the World Governments Series, the  Limited Maturity Series and the High
Income Series may  invest in  mortgage pass-through  securities. Mortgage  pass-
through  securities are securities representing interests in "pools" of mortgage
loans. The Utilities Series may invest in mortgage pass-through securities  that
are  securities issued or  guaranteed as to  principal and interest  by the U.S.
Government, its agencies, authorities or instrumentalities. Monthly payments  of
interest  and  principal by  the individual  borrowers  on mortgages  are passed
through to the  holders of the  securities (net of  fees paid to  the issuer  or
guarantor  of the securities) as the  mortgages in the underlying mortgage pools
are paid off. Payment  of principal and interest  on some mortgage  pass-through
securities  (but  not the  market  value of  the  securities themselves)  may be
guaranteed by the full faith and credit  of the U.S. Government (in the case  of
securities  guaranteed  by  GNMA); or  guaranteed  by  U.S. Government-sponsored
corporations  (such  as  FNMA  or  FHLMC,  which  are  supported  only  by   the
discretionary  authority  of  the  U.S.  Government  to  purchase  the  agency's
obligations). Mortgage  pass-through  securities  may also  be  issued  by  non-
governmental  issuers (such as commercial  banks, savings and loan institutions,
private mortgage  insurance  companies,  mortgage bankers  and  other  secondary
market issuers). See the SAI for a further discussion of these securities.
 
   
    INDEXED  SECURITIES: Each of the Value  Series, the Total Return Series, the
High Income  Series,  the  Bond  Series, the  Utilities  Series  and  the  World
Governments  Series may  invest in indexed  securities whose value  is linked to
foreign currencies,  interest rates,  commodities,  indices or  other  financial
indicators.  Most indexed securities are short to intermediate term fixed income
securities whose  values at  maturity (I.E.,  principal value)  and/or  interest
rates  rise or fall according to the  change in one or more specified underlying
instruments. Indexed securities may be  positively or negatively indexed  (I.E.,
their  principal  value  or  interest  rates may  increase  or  decrease  if the
underlying instrument appreciates), and may have return characteristics  similar
to  direct investments in the underlying instrument or to one or more options on
the underlying  instrument. Indexed  securities may  be more  volatile than  the
underlying instrument itself.
    
 
    SWAPS  AND  RELATED TRANSACTIONS:  As one  way of  managing its  exposure to
different types  of investments,  each  of the  High  Income Series,  the  World
Governments  Series, the Strategic Fixed Income  Series, the Bond Series and the
Limited Maturity Series may enter into  interest rate swaps, currency swaps  and
other  types of  available swap  agreements, such  as caps,  collars and floors.
Swaps involve the exchange by a Series with another party of cash payments based
upon different interest  rate indexes,  currencies, and other  prices or  rates,
such  as the  value of  mortgage prepayment rates.  For example,  in the typical
interest rate swap, a Series might exchange a sequence of cash payments based on
a floating rate index for cash payments based on a fixed rate. Payments made  by
both parties to a swap transaction are based on a principal amount determined by
the parties.
 
                                       28
<PAGE>
    Each  of the High Income Series, the World Governments Series, the Strategic
Fixed Income Series, the  Bond Series and the  Limited Maturity Series may  also
purchase and sell caps, floors and collars. In a typical cap or floor agreement,
one party agrees to make payments only under specified circumstances, usually in
return for payment of a fee by the counterparty. For example, the purchase of an
interest  rate cap  entitles the  buyer, to  the extent  that a  specified index
exceeds a predetermined  interest rate,  to receive  payments of  interest on  a
contractually-based principal amount from the counterparty selling such interest
rate  cap.  The sale  of an  interest rate  floor obligates  the seller  to make
payments to the extent that a specified interest rate falls below an agreed-upon
level. A collar  arrangement combines  elements of buying  a cap  and selling  a
floor.
 
    Swap  agreements will tend  to shift a Series'  investment exposure from one
type of  investment to  another. For  example, if  a Series  agreed to  exchange
payments  in dollars for payments  in foreign currency, in  each case based on a
fixed rate, the swap agreement would tend to decrease a Series' exposure to U.S.
interest rates and increase its exposure to foreign currency and interest rates.
Caps and floors have an effect  similar to buying or writing options.  Depending
on  how they  are used,  swap agreements  may increase  or decrease  the overall
volatility of a Series' investments and its share price and yield.
 
    Swap agreements are sophisticated hedging instruments that typically involve
a small investment  of cash relative  to the  magnitude of risks  assumed. As  a
result,  swaps can be  highly volatile and  may have a  considerable impact on a
Series' performance.  Swap  agreements  are  subject to  risks  related  to  the
counterparty's   ability  to   perform,  and  may   decline  in   value  if  the
counterparty's creditworthiness deteriorates. A Series may also suffer losses if
it is unable  to terminate outstanding  swap agreements or  reduce its  exposure
through offsetting transactions.
 
    Swaps,  caps,  floors and  collars are  highly specialized  activities which
involve certain risks.  See the SAI  for further information  on, and the  risks
involved in, these activities.
 
   
    OPTIONS ON SECURITIES: Each of the Emerging Growth Series, the Value Series,
the Total Return Series, the Bond Series, the Strategic Fixed Income Series, the
World  Governments Series,  the Growth  With Income  Series and  the High Income
Series may write (sell) covered put and  call options and purchase put and  call
options on securities. Each of these Series will write options on securities for
the  purpose  of  increasing its  return  and/or  to protect  the  value  of its
portfolio.  In  particular,  where  a  Series  writes  an  option  that  expires
unexercised  or is  closed out  by the Series  at a  profit, it  will retain the
premium paid for the option which will increase its gross income and will offset
in part the reduced  value of the portfolio  security underlying the option,  or
the increased cost of portfolio securities to be acquired. In contrast, however,
if the price of the underlying security moves adversely to the Series' position,
the  option may be exercised and the 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.  The 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.
    
 
    By writing a call option on a  security, a Series limits its opportunity  to
profit  from any increase in the market  value of the underlying security, since
the holder will usually exercise  the call option when  the market value of  the
underlying  security exceeds the exercise price of the call. However, the Series
retains the risk of depreciation in value of securities on which it has  written
call options.
 
    Each  of these 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 a Series wants to purchase at a later date. In the
event  that the expected  market fluctuations occur,  the 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 the  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
the Series.
 
                                       29
<PAGE>
    In certain instances,  the Strategic  Fixed Income Series  and the  Emerging
Growth  Series may  enter into options  on Treasury securities  that are "reset"
options or  "adjustable  strike" options.  These  options provide  for  periodic
adjustment  of the strike price and may also provide for the periodic adjustment
of the  premium during  the  term of  the option.  The  SAI contains  a  further
discussion of these investments.
 
   
    OPTIONS  ON STOCK  INDICES: Each  of the  Emerging Growth  Series, the Value
Series, the Total Return Series, the Growth With Income Series and the Utilities
Series may write (sell) covered call and  put options and purchase call and  put
options  on  stock indices.  Each of  these  Series may  write options  on stock
indices for  the purpose  of increasing  its  gross income  and to  protect  its
portfolio  against declines in the  value of securities it  owns or increases in
the value of  securities to be  acquired. When a  Series writes an  option on  a
stock  index,  and  the value  of  the  index moves  adversely  to  the holder's
position, the option will not be exercised, and the Series will either close out
the option at a profit or allow it to expire unexercised. A Series will  thereby
retain  the amount  of the premium,  less related transaction  costs, which will
increase its gross  income and  offset part of  the reduced  value of  portfolio
securities   or  the  increased   cost  of  securities   to  be  acquired.  Such
transactions, however, will constitute only partial hedges against adverse price
fluctuations, since any such fluctuations will  be offset only to the extent  of
the  premium received by  a Series for  the writing of  the option, less related
transaction costs.  In addition,  if  the value  of  an underlying  index  moves
adversely  to a Series'  option position, the  option may be  exercised, and the
Series will experience a loss which may  only be partially offset by the  amount
of the premium received.
    
 
    Each  of these Series may also purchase put or call options on stock indices
in order, respectively, to hedge its  investments against a decline in value  or
to attempt to reduce the risk of missing a market or industry segment advance. A
Series' possible loss in either case will be limited to the premium paid for the
option, plus related transaction costs.
 
   
    "YIELD  CURVE" OPTIONS: Each  of the Value Series,  the Total Return Series,
the Bond Series, the Strategic Fixed Income Series, the World Governments Series
and the High  Income Series may  enter into  options on the  yield "spread,"  or
yield  differential,  between two  securities, a  transaction  referred to  as a
"yield curve" option, for hedging and non-hedging (an effort to increase current
income) purposes. In contrast to other types of options, a yield curve option is
based on the difference between the yields of designated securities rather  than
the  actual prices  of the  individual securities,  and is  settled through cash
payments. Accordingly, a yield curve option is profitable to the holder if  this
differential  widens (in the case of a call)  or narrows (in the case of a put),
regardless of  whether  the yields  of  the underlying  securities  increase  or
decrease.  Yield curve options written by a  Series will be covered as described
in the SAI.  The trading  of yield  curve options is  subject to  all the  risks
associated  with  trading  other  types of  options,  as  discussed  below under
"Additional Risk Factors"  and in  the SAI.  In addition,  such options  present
risks  of loss  even if the  yield on  one of the  underlying securities remains
constant, if the  spread moves  in a  direction or to  an extent  which was  not
anticipated.
    
 
   
    FUTURES CONTRACTS AND OPTIONS ON FUTURES CONTRACTS: Each of the Total Return
Series,   the  Bond  Series,  the  Strategic  Fixed  Income  Series,  the  World
Governments Series, the Limited Maturity Series, the High Income Series and  the
Utilities  Series may purchase and sell futures contracts on foreign or domestic
fixed income securities or indices of such securities, including municipal  bond
indices  and any  other indices of  foreign or domestic  fixed income securities
that may  become available  for  trading ("Futures  Contracts"). Each  of  these
Series  may also purchase and write  options on such Futures Contracts ("Options
on Futures Contracts"). Each  of the Emerging Growth  Series, the Value  Series,
the  Total Return Series and the Growth With Income Series may purchase and sell
Futures Contracts on stock indices, while the Emerging Growth Series, the  Value
Series,  the Total Return  Series, the Strategic Fixed  Income Series, the World
Governments Series, the Growth With Income  Series and the Utilities Series  may
purchase  and sell Futures Contracts on foreign currencies or indices of foreign
currencies. Each of  these Series may  also purchase and  write Options on  such
Futures Contracts.
    
 
    Such  transactions  will  be  entered  into  for  hedging  purposes  or  for
non-hedging purposes to the extent permitted by applicable law. Each Series will
incur brokerage fees when it purchases and sells Futures Contracts, and will  be
required  to  maintain margin  deposits. In  addition, Futures  Contracts entail
risks.  Although   the   Adviser   believes   that   use   of   such   Contracts
 
                                       30
<PAGE>
will benefit a Series, if its investment judgment about the general direction of
exchange rates or the stock market is incorrect, the Series' overall performance
may  be poorer than if it had not  entered into any such contract and the Series
may realize  a loss.  A  Series will  not enter  into  any Futures  Contract  if
immediately  thereafter the value of securities and other obligations underlying
all such Futures Contracts held by such Series would exceed 50% of the value  of
its total assets.
 
    Purchases of Options on Futures Contracts may present less risk in hedging a
Series'  portfolio 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,  although it  may  be necessary  to  exercise the  option to
realize any profit, which  results in the establishment  of a futures  position.
The writing of Options on Futures Contracts, 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.  In addition,  if  an  option  is
exercised, a Series may suffer a loss on the transaction.
 
    Futures  Contracts and Options on Futures Contracts that are entered into by
a Series will be traded on U.S. and foreign exchanges.
 
    FORWARD CONTRACTS: Each Series (except the Limited Maturity Series and Money
Market Series) may enter  into forward foreign  currency exchange contracts  for
the  purchase or sale of a fixed quantity of a foreign currency at a future date
("Forward Contracts"). Each of these Series may enter into Forward Contracts for
hedging purposes and (except for the Bond Series and the High Income Series) for
non-hedging purposes (I.E., speculative purposes). By entering into transactions
in Forward Contracts for  hedging purposes, a Series  may be required to  forego
the  benefits of  advantageous changes  in exchange  rates and,  in the  case of
Forward Contracts entered into  for non-hedging purposes,  a Series may  sustain
losses  which will reduce its gross  income. Such transactions, therefore, could
be considered speculative. Forward Contracts are traded over-the-counter and not
on organized commodities or securities exchanges. As a result, Forward Contracts
operate in a  manner distinct  from exchange-traded instruments,  and their  use
involves  certain  risks beyond  those associated  with transactions  in Futures
Contracts or options traded on exchanges. A Series may choose to, or be required
to, receive delivery of the  foreign currencies underlying Forward Contracts  it
has  entered  into.  Under  certain circumstances,  such  as  where  the Adviser
believes that  the applicable  exchange  rate is  unfavorable  at the  time  the
currencies  are received or the Adviser  anticipates, for any other reason, that
the exchange  rate will  improve, the  Series may  hold such  currencies for  an
indefinite  period of time. A  Series may also enter  into a Forward Contract on
one currency to  hedge against  risk of loss  arising from  fluctuations in  the
value  of a second currency (referred to as a "cross hedge") if, in the judgment
of the  Adviser, a  reasonable degree  of correlation  can be  expected  between
movements  in  the  values of  the  two  currencies. Each  of  these  Series has
established procedures  consistent with  statements  of the  SEC and  its  staff
regarding the use of Forward Contracts by registered investment companies, which
requires use of segregated assets or "cover" in connection with the purchase and
sale of such contracts.
 
   
    OPTIONS ON FOREIGN CURRENCIES: Each of the Emerging Growth Series, the Value
Series,  the Total  Return Series, the  Bond Series, the  Strategic Fixed Income
Series, the World Governments  Series, the Growth With  Income Series, the  High
Income Series and the Utilities Series may purchase and write options on foreign
currencies  ("Options  on Foreign  Currencies")  for the  purpose  of protecting
against declines  in  the  dollar  value of  portfolio  securities  and  against
increases  in the dollar  cost of 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 a  Series  may  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 a Series' position, it may forfeit the entire amount of the premium paid  for
the  option plus related transaction  costs. A Series may  also choose to, or be
required to, receive delivery  of the foreign  currencies underlying Options  on
Foreign  Currencies it  has entered into.  Under certain  circumstances, such as
where the Adviser believes that the  applicable exchange rate is unfavorable  at
the  time the currencies are received or  the Adviser anticipates, for any other
reason, that the exchange rate will  improve, a Series may hold such  currencies
for an indefinite period of time.
    
 
                                       31
<PAGE>
6.  ADDITIONAL RISK FACTORS
 
    OPTIONS,  FUTURES CONTRACTS  AND FORWARD CONTRACTS:  Although certain Series
will enter into transactions in  options, Futures Contracts, Options on  Futures
Contracts,  Forward  Contracts and  Options  on Foreign  Currencies  for hedging
purposes, such transactions nevertheless involve  certain risks. For example,  a
lack  of  correlation between  the instrument  underlying  an option  or Futures
Contract and the  assets being  hedged, or unexpected  adverse price  movements,
could render a Series' hedging strategy unsuccessful and could result in losses.
Certain  Series also may enter into  transactions in options, Futures Contracts,
Options on  Futures  Contracts and  Forward  Contracts for  other  than  hedging
purposes,  which  involves greater  risk. In  particular, such  transactions may
result in losses for a Series which  are not offset by gains on other  portfolio
positions,  thereby reducing gross income. In addition, foreign currency markets
may be extremely volatile from time to time. There also can be no assurance that
a liquid secondary market will exist for  any contract purchased or sold, and  a
Series  may be  required to  maintain a  position until  exercise or expiration,
which could result in losses. The SAI  contains a description of the nature  and
trading  mechanics of options, Futures  Contracts, Options on Futures Contracts,
Forward Contracts and Options on  Foreign Currencies, and includes a  discussion
of the risks related to transactions therein.
 
    Transactions   in  Forward  Contracts  may  be  entered  into  only  in  the
over-the-counter market. Futures Contracts and Options on Futures Contracts  may
be  entered into  on U.S. exchanges  regulated by the  Commodity Futures Trading
Commission and on  foreign exchanges.  In addition, the  securities and  indexes
underlying options, Futures Contracts and Options on Futures Contracts traded by
the Series will include both domestic and foreign securities.
 
   
    LOWER RATED BONDS: Each of the Emerging Growth Series, the Value Series, the
Research  Series, the Total Return Series, the Bond Series, the Limited Maturity
Series, the  Strategic Fixed  Income  Series, the  High  Income Series  and  the
Utilities  Series may invest in fixed income  securities rated Baa by Moody's or
BBB by S&P or Fitch and  comparable unrated securities. These securities,  while
normally   exhibiting   adequate   protection   parameters,   have   speculative
characteristics and changes  in economic conditions  or other circumstances  are
more  likely  to lead  to a  weakened  capacity to  make principal  and interest
payments than in the case of higher grade securities.
    
 
    Each of these Series (except the Limited Maturity Series) may also invest in
securities rated Ba  or lower  by Moody's or  BB or  lower by S&P  or Fitch  and
comparable  unrated securities  (commonly known as  "junk bonds")  to the extent
described above. See Appendix  A to this Prospectus  for a description of  these
ratings.  These  securities  are  considered  speculative  and,  while generally
providing greater  income  than investments  in  higher rated  securities,  will
involve  greater  risk of  principal and  income  (including the  possibility of
default or bankruptcy of the issuers of such securities) and may involve greater
volatility of  price  (especially  during periods  of  economic  uncertainty  or
change)  than securities in the higher  rating categories. However, since yields
vary over time, no  specific level of  income can ever  be assured. These  lower
rated  high yielding fixed income securities  generally tend to reflect economic
changes and short-term corporate and  industry developments to a greater  extent
than  higher  rated  securities which  react  primarily to  fluctuations  in the
general level  of  interest  rates  (although these  lower  rated  fixed  income
securities  are  also  affected  by  changes  in  interest  rates,  the market's
perception of their credit quality, and the outlook for economic growth). In the
past, economic downturns or  an increase in interest  rates have, under  certain
circumstances,  caused a  higher incidence  of default  by the  issuers of these
securities and  may do  so  in the  future, especially  in  the case  of  highly
leveraged  issuers. During certain periods, the higher yields on a Series' lower
rated high yielding fixed  income securities are paid  primarily because of  the
increased risk of loss of principal and income, arising from such factors as the
heightened  possibility  of  default  or  bankruptcy  of  the  issuers  of  such
securities. Due to the fixed income  payments of these securities, a Series  may
continue  to earn the  same level of  interest income while  its net asset value
declines due  to portfolio  losses, which  could result  in an  increase in  the
Series'  yield despite the actual loss of  principal. The market for these lower
rated fixed income securities may be less liquid than the market for  investment
grade  fixed income securities, and judgment may at times play a greater role in
valuing  these  securities  than   in  the  case   of  investment  grade   fixed
 
                                       32
<PAGE>
income  securities.  Changes  in the  value  of securities  subsequent  to their
acquisition will not affect  cash income or  yield to maturity  to a Series  but
will  be reflected in the net  asset value of shares of  the Series. See the SAI
for more information on lower rated securities.
 
    FOREIGN  SECURITIES:   The   Limited   Maturity   Series   may   invest   in
dollar-denominated  foreign debt securities. The  Money Market Series may invest
in dollar-denominated securities  of foreign issuers  and in  dollar-denominated
securities  of foreign branches of U.S. banks such as negotiable certificates of
deposit (Eurodollars). The remaining Series may invest in dollar-denominated and
non-dollar/denominated foreign securities.  Investing in  securities of  foreign
issuers  generally involves  risks not  ordinarily associated  with investing in
securities of  domestic  issuers.  These  include  changes  in  currency  rates,
exchange   control  regulations,  governmental  administration  or  economic  or
monetary policy (in  the U.S. or  abroad) or circumstances  in dealings  between
nations.  Costs may be  incurred in connection  with conversions between various
currencies. Special  considerations may  also include  more limited  information
about  foreign issuers,  higher brokerage costs,  different accounting standards
and thinner trading markets. Foreign securities markets may also be less liquid,
more volatile and  less subject  to government  supervision than  in the  United
States.  Investments in  foreign countries  could be  affected by  other factors
including expropriation,  confiscatory taxation  and potential  difficulties  in
enforcing  contractual obligations and  could be subject  to extended settlement
periods. All of  the Series (except  the Limited Maturity  Series and the  Money
Market Series) may hold foreign currency received in connection with investments
in  foreign  securities  when, in  the  judgment  of the  Adviser,  it  would be
beneficial to convert such currency into U.S. dollars at a later date, based  on
anticipated  changes in  the relevant exchange  rate. Such Series  may also hold
foreign currency in anticipation of  purchasing foreign securities. See the  SAI
for  further  discussion  of  foreign  securities  and  the  holding  of foreign
currency, as well as the associated risks.
 
    AMERICAN DEPOSITARY  RECEIPTS:  Each  of  the  Series  (except  the  Limited
Maturity  Series  and the  Money Market  Series)  may invest  in ADRs  which are
certificates issued  by a  U.S.  depository (usually  a  bank) and  represent  a
specified  quantity of shares of an underlying  non-U.S. stock on deposit with a
custodian bank as collateral. Because  ADRs trade on U.S. securities  exchanges,
the Adviser does not treat them as foreign securities. However, they are subject
to many of the risks of foreign securities such as changes in exchange rates and
more limited information about foreign issuers.
 
    EMERGING  MARKET SECURITIES:  Each of  the Series  (except the  Money Market
Series) may invest  in emerging  markets. In addition  to the  general risks  of
investing in foreign securities, investments in emerging markets involve special
risks.  Securities of many  issuers in emerging  markets may be  less liquid and
more volatile than securities of  comparable domestic issuers. These  securities
may  be considered speculative  and, while generally  offering higher income and
the potential for capital appreciation, may present significantly greater  risk.
Emerging  markets may have different clearance and settlement procedures, and in
certain markets there have been times when settlements have been unable to  keep
pace  with the volume of securities transactions, making it difficult to conduct
such transactions. Delays in settlement could result in temporary periods when a
portion of the assets of a Series is uninvested and no return is earned thereon.
The inability of a Series to make intended security purchases due to  settlement
problems  could  cause a  Series  to miss  attractive  investment opportunities.
Inability to dispose of  portfolio securities due  to settlement problems  could
result  in  losses  to a  Series  due to  subsequent  declines in  value  of the
portfolio securities,  a  decrease  in  the level  of  liquidity  in  a  Series'
portfolio,  or if  a Series has  entered into  a contract to  sell the security,
possible liability to  the purchaser.  Certain markets may  require payment  for
securities before delivery, and in such markets a Series bears the risk that the
securities  will not  be delivered  and that  the Series'  payments will  not be
returned. Securities  prices  in  emerging markets  can  be  significantly  more
volatile than in the more developed nations of the world, reflecting the greater
uncertainties  of  investing  in  less  established  markets  and  economies. In
particular,  countries  with  emerging  markets  may  have  relatively  unstable
governments,  present the risk of nationalization of businesses, restrictions on
foreign ownership, or prohibitions of repatriation of assets, and may have  less
protection  of property rights  than more developed  countries. The economies of
countries with  emerging  markets may  be  predominantly  based on  only  a  few
industries,  may  be  highly vulnerable  to  changes  in local  or  global trade
conditions, and may suffer from extreme  and volatile debt burdens or  inflation
rates.  Local securities markets may trade a  small number of securities and may
 
                                       33
<PAGE>
be unable to  respond effectively  to increases in  trading volume,  potentially
making  prompt liquidation  of substantial  holdings difficult  or impossible at
times. Securities of issuers located in countries with emerging markets may have
limited marketability and may be subject to more abrupt or erratic movements.
 
    Certain  emerging  markets  may   require  governmental  approval  for   the
repatriation  of  investment  income,  capital  or  the  proceeds  of  sales  of
securities by foreign investors.  In addition, if a  deterioration occurs in  an
emerging  market's balance  of payments  or for  other reasons,  a country could
impose temporary restrictions on foreign capital remittances. A Series could  be
adversely   affected  by  delays  in,  or  a  refusal  to  grant,  any  required
governmental approval for repatriation of capital, as well as by the application
to the Series of any restrictions on investments.
 
    Investment in  certain  foreign  emerging market  debt  obligations  may  be
restricted  or controlled to varying degrees. These restrictions or controls may
at times preclude investment in certain foreign emerging market debt obligations
and increase the expenses of a Series.
 
    NON-DIVERSIFICATION: Each  of the  World Governments  Series, the  Strategic
Fixed  Income Series and the Utilities Series is "non-diversified," as that term
is defined in the Investment Company Act of 1940 ( the "1940 Act"), but  intends
to  qualify as a  "regulated investment company" ("RIC")  for federal income tax
purposes. This means,  in general,  that although more  than 5%  of the  Series'
total  assets  may be  invested in  the  securities of  one issuer  (including a
foreign government),  at the  close of  each  quarter of  its taxable  year  the
aggregate  amount of such holdings may not exceed  50% of the value of its total
assets, and no more than 25% of the value of its total assets may be invested in
the securities of a single issuer.  To the extent that a non-diversified  Series
at  times may hold the securities of a smaller number of issuers than if it were
"diversified" (as defined in  the 1940 Act),  the Series will  at such times  be
subject  to greater risk  with respect to  its portfolio securities  than a fund
that invests in a broader range of securities, because changes in the  financial
condition or market assessment of a single issuer may cause greater fluctuations
in the Series' total return and the net asset value of its shares.
                              -------------------
 
SHORT-TERM  INVESTMENTS FOR  TEMPORARY DEFENSIVE  PURPOSES --  During periods of
unusual market conditions when the Adviser believes that investing for temporary
defensive purposes is appropriate,  or in order  to meet anticipated  redemption
requests, a large portion or all of the assets of each Series may be invested in
cash (including foreign currency) or cash equivalents including, but not limited
to,   obligations  of   banks  (including  certificates   of  deposit,  bankers'
acceptances,  time  deposits  and  repurchase  agreements),  commercial   paper,
short-term notes, U.S. Government Securities and related repurchase agreements.
 
PORTFOLIO TRADING
 
    Each   Series  intends  to  manage  its  portfolio  by  buying  and  selling
securities, as  well as  holding  securities to  maturity,  to help  attain  its
investment objectives and policies.
 
    Each  Series will engage in portfolio  trading if it believes a transaction,
net  of  costs  (including  custodian  charges),  will  help  in  attaining  its
investment  objectives. In trading portfolio securities,  a Series seeks to take
advantage of  market  developments,  yield disparities  and  variations  in  the
creditworthiness  of issuers. For  a description of the  strategies which may be
used by the Series in trading portfolio securities, see "Portfolio  Transactions
and  Brokerage Commissions" in the SAI.  The Total Return Series' portfolio will
be managed actively with respect to the Series' fixed income securities and  the
asset  allocations modified as the Adviser  deems necessary. Although the Series
does not  intend to  seek short-term  profits, fixed  income securities  in  its
portfolio  will be sold whenever the Adviser believes it is appropriate to do so
without regard to the length  of time the particular  asset may have been  held.
With  respect to its equity securities, the  Total Return Series does not intend
to trade in  securities for  short-term profits and  anticipates that  portfolio
securities  ordinarily will be held for one  year or longer. However, the Series
will effect trades whenever it believes that changes in its portfolio securities
are appropriate.
 
                                       34
<PAGE>
    Because the  World  Governments  Series  is expected  to  have  a  portfolio
turnover  rate of over  100%, transaction costs  incurred by the  Series and the
realized capital gains and losses  of the Series may be  greater than that of  a
fund with a lesser portfolio turnover rate.
 
    The  primary consideration  in placing portfolio  security transactions with
broker-dealers for execution  is to  obtain, and maintain  the availability  of,
execution  at  the  most  favorable  prices and  in  the  most  effective manner
possible. Consistent with the foregoing primary consideration, the Rules of Fair
Practice of the National  Association of Securities  Dealers, Inc. (the  "NASD")
and  such other policies as the Trustees of the Trust may determine, the Adviser
may consider sales  of Contracts for  which the Trust  is an investment  option,
together  with sales of shares  of other investment company  clients of MFS Fund
Distributors, Inc., the distributor of shares of the Trust and of the MFS Family
of Funds, as a factor in the selection of broker-dealers to execute each Series'
portfolio transactions.  From  time  to  time the  Adviser  may  direct  certain
portfolio transactions to broker-dealer firms which, in turn, have agreed to pay
a portion of the Series' operating expenses (e.g., fees charged by the custodian
of  the Series' assets). For a further  discussion of portfolio trading, see the
SAI.
                              -------------------
 
    The SAI includes a  discussion of other investment  policies and listing  of
specific  investment restrictions which  govern the investment  policies of each
Series. The specific investment  restrictions listed in the  SAI may be  changed
without  shareholder  approval unless  indicated  otherwise (see  the  SAI). The
Series' investment limitations, policies and rating standards are adhered to  at
the  time  of  purchase  or  utilization  of  assets;  a  subsequent  change  in
circumstances will not be considered to result in a violation of policy.
 
7.  MANAGEMENT OF THE SERIES
 
    The  Trust's  Board  of  Trustees,   as  part  of  its  overall   management
responsibility,  oversees  various  organizations responsible  for  each Series'
day-to-day management.
 
INVESTMENT ADVISER -- MFS manages each Series pursuant to an Investment Advisory
Agreement with the  Trust on behalf  of each  Series dated April  14, 1994  (the
"Advisory  Agreement"). MFS provides the Series with overall investment advisory
and administrative services, as  well as general  office facilities. Subject  to
such  policies as the Trustees may determine, MFS makes investment decisions for
each Series. For  its services and  facilities, MFS receives  a management  fee,
computed  and paid monthly, in an amount  equal to the following annual rates of
the average daily net assets of each Series:
 
   
<TABLE>
<CAPTION>
                                                                                                 PERCENTAGE OF THE
                                                                                                 AVERAGE DAILY NET
                                                                                                       ASSETS
SERIES                                                                                             OF EACH SERIES
- ---------------------------------------------------------------------------------------------  ----------------------
<S>                                                                                            <C>
Emerging Growth Series.......................................................................             0.75%
Value Series.................................................................................             0.75%
Research Series..............................................................................             0.75%
Growth With Income Series....................................................................             0.75%
Total Return Series..........................................................................             0.75%
Utilities Series.............................................................................             0.75%
High Income Series...........................................................................             0.75%
World Governments Series.....................................................................             0.75%
Strategic Fixed Income Series................................................................             0.75%
Bond Series..................................................................................             0.60%
Limited Maturity Series......................................................................             0.55%
Money Market Series..........................................................................             0.50%
</TABLE>
    
 
                                       35
<PAGE>
    For the fiscal  year ended  December 31,  1995, MFS  received the  following
management  fees from  the Series under  the Advisory Agreement  and assumed the
following amounts of the Series' expenses (see "Expenses" below);
 
<TABLE>
<CAPTION>
                                                                                    MANAGEMENT FEE  EXPENSES ASSUMED
SERIES                                                                               PAID TO MFS         BY MFS
- ----------------------------------------------------------------------------------  --------------  ----------------
<S>                                                                                 <C>             <C>
Emerging Growth Series............................................................    $    6,262       $   15,659
Research Series...................................................................         4,424           16,913
Growth With Income Series.........................................................           597           16,226
Total Return Series...............................................................        10,826           25,092
Utilities Series..................................................................         9,376           25,513
High Income Series................................................................         3,996           17,847
World Governments Series..........................................................        33,869           43,311
Bond Series.......................................................................           247           17,623
Money Market Series...............................................................           594           24,976
</TABLE>
 
    The identity and background of the portfolio managers for each Series is set
forth below. Unless  indicated otherwise,  each portfolio manager  has acted  in
that capacity since the commencement of investment operations of each Series.
 
   
<TABLE>
<CAPTION>
SERIES                                                           PORTFOLIO MANAGERS
- -----------------------------  --------------------------------------------------------------------------------------
<S>                            <C>
Emerging Growth Series         John  W. Ballen, a Senior Vice President of MFS, has been employed by the Adviser as a
                               portfolio manager since  1984. Toni  Y. Shimura,  a Vice  President of  MFS, has  been
                               employed  by  the Adviser  as a  portfolio manager  since 1987.  Ms. Shimura  became a
                               portfolio manager of the Series on November 30, 1995.
Value Series                   John F. Brennan, Jr., a Senior Vice President of MFS, has been employed by the Adviser
                               as a portfolio manager since 1985.
Research Series                The Series is currently  managed by a committee  comprised of various equity  research
                               analysts employed by the Adviser.
Growth With Income Series      Kevin  R. Parke, a Senior Vice President of MFS, has been employed by the Adviser as a
                               portfolio manager since 1985. John D. Laupheimer, a Senior Vice President of MFS,  has
                               been employed by the Adviser as a portfolio manager since 1981.
Total Return Series            David  M. Calabro,  a Vice President  of MFS,  has been employed  by the  Adviser as a
                               portfolio manager since  1992. Mr. Calabro  is the head  of this portfolio  management
                               team  and a manager of the common stock  portion of the Series' portfolio. Geoffrey L.
                               Kurinsky, a  Senior Vice  President of  MFS, has  been employed  by the  Adviser as  a
                               portfolio  manager since 1987. Mr. Kurinsky is the manager of the Series' fixed income
                               securities. Judith N. Lamb, a Vice President of MFS, has been employed by the  Adviser
                               as  a portfolio manager since 1992. Ms. Lamb is the manager of the Series' convertible
                               securities. Lisa B. Nurme, a Vice President  of MFS, has been employed by the  Adviser
                               as  a portfolio manager since 1987. Ms. Nurme is a manager of the common stock portion
                               of the Series'  portfolio. Maura A.  Shaughnessy, a  Vice President of  MFS, has  been
                               employed  by  the Adviser  as a  portfolio manager  since 1991.  Ms. Shaughnessy  is a
                               manager of the common stock portion of the Series' portfolio. Each individual became a
                               portfolio manager of the Series on July 19, 1995.
Utilities Series               Maura A.  Shaughnessy, a  Vice President  of the  Adviser, has  been employed  by  the
                               Adviser as a portfolio manager since 1991.
High Income Series             Joan  S. Batchelder, a Senior Vice President of  the Adviser, has been employed by the
                               Adviser as a portfolio manager since 1984.
</TABLE>
    
 
                                       36
<PAGE>
<TABLE>
<CAPTION>
SERIES                                                           PORTFOLIO MANAGERS
- -----------------------------  --------------------------------------------------------------------------------------
World Governments Series       Stephen C. Bryant, a Senior  Vice President of the Adviser,  has been employed by  the
                               Adviser as a portfolio manager since 1987.
<S>                            <C>
Strategic Fixed Income Series  James  Swanson,  a Senior  Vice President  of the  Adviser, has  been employed  by the
                               Adviser as a portfolio manager since 1985.
Bond Series                    Geoffrey L. Kurinsky, a Senior Vice President of the Adviser, has been employed by the
Limited Maturity Series        Adviser as a portfolio manager since 1987.
Money Market Series
</TABLE>
 
    MFS also serves as investment adviser to each of the other funds in the  MFS
Family  of Funds  (the "MFS Funds")  and to  MFS-Registered Trademark- Municipal
Income Trust, MFS Multimarket Income Trust, MFS Government Markets Income Trust,
MFS Intermediate  Income Trust,  MFS  Charter Income  Trust, MFS  Special  Value
Trust,  MFS Institutional Trust, MFS Union  Standard Trust, MFS/ Sun Life Series
Trust, Sun Growth Variable Annuity Fund, Inc. and seven variable accounts,  each
of  which is a  registered investment company established  by Sun Life Assurance
Company of Canada (U.S.)  ("Sun Life of Canada  (U.S.)") in connection with  the
sale  of  various fixed/variable  annuity contracts.  MFS  and its  wholly owned
subsidiary, MFS Asset Management, Inc., provide investment advice to substantial
private clients.
 
   
    MFS is America's oldest  mutual fund organization.  MFS and its  predecessor
organizations  have  a history  of  money management  dating  from 1924  and the
founding of the first mutual fund in the United States, Massachusetts  Investors
Trust.   Net  assets  under   the  management  of   the  MFS  organization  were
approximately $45.7  billion on  behalf of  approximately 2.0  million  investor
accounts  as of April  30, 1996. As  of such date,  the MFS organization managed
approximately  $21.9  billion  of  assets  invested  in  equity  securities  and
approximately  $19.4  billion of  assets  invested in  fixed  income securities.
Approximately $3.8  billion  of  the  assets managed  by  MFS  are  invested  in
securities of foreign issuers and non-U.S. dollar-denominated securities of U.S.
issuers.  MFS is a subsidiary of  Sun Life of Canada (U.S.),  which in turn is a
wholly owned subsidiary of  Sun Life Assurance Company  of Canada ("Sun  Life").
The  Directors of MFS are A. Keith  Brodkin, Jeffrey L. Shames, Arnold D. Scott,
John D. McNeil and John R. Gardner.  Mr. Brodkin is the Chairman, Mr. Shames  is
the  President  and Mr.  Scott  is the  Secretary  and a  Senior  Executive Vice
President of MFS.  Messrs. McNeil and  Gardner are the  Chairman and  President,
respectively,  of Sun Life. Sun Life, a mutual life insurance company, is one of
the largest international life insurance companies and has been operating in the
United States since 1895, establishing a  headquarters office here in 1973.  The
executive officers of MFS report to the Chairman of Sun Life.
    
 
    A.  Keith Brodkin, the Chairman  and a Director of  MFS, is the Chairman and
President and a Trustee of the Trust. W. Thomas London, Stephen E. Cavan,  James
R.  Bordewick, Jr.,  and James  O. Yost, all  of whom  are officers  of MFS, are
officers of the Trust.
 
    MFS has established a strategic alliance with Foreign & Colonial  Management
Ltd.  ("Foreign & Colonial"). Foreign  & Colonial is a  subsidiary of two of the
world's oldest  financial  services  institutions, the  London-based  Foreign  &
Colonial Investment Trust PLC, which pioneered the idea of investment management
in  1868, and HYPO-BANK (Bayerische Hypotheken-und Weschsel-Bank AG), the oldest
publicly listed bank in Germany, founded in 1835. As part of this alliance,  the
portfolio  managers and investment  analysts of MFS and  Foreign & Colonial will
share their  views  on a  variety  of investment  related  issues, such  as  the
economy,  securities markets, portfolio securities and their issuers, investment
recommendations, strategies and  techniques, risk  analysis, trading  strategies
and  other portfolio management  matters. MFS will have  access to the extensive
international equity investment expertise of  Foreign & Colonial, and Foreign  &
Colonial  will have access to the  extensive U.S. equity investment expertise of
MFS. One or more MFS  investment analysts are expected  to work for an  extended
period  with Foreign & Colonial's portfolio  managers and investment analysts at
their offices in London. In return, one or more Foreign & Colonial employees are
expected to work in a similar manner at MFS' Boston offices.
 
                                       37
<PAGE>
    In  certain  instances there  may  be securities  which  are suitable  for a
Series' portfolio as well as for portfolios  of other clients of MFS or  clients
of  Foreign  &  Colonial.  Some simultaneous  transactions  are  inevitable when
several clients  receive investment  advice  from MFS  and Foreign  &  Colonial,
particularly  when the same security is suitable for more than one client. While
in some cases this arrangement could have  a detrimental effect on the price  or
availability  of the security as  far as a Series  is concerned, in other cases,
however, it may produce increased investment opportunities for the Series.
 
    From time to time, the Adviser  may purchase, redeem and exchange shares  of
any  Series. The  purchase by  the Adviser of  shares of  a Series  may have the
effect of  lowering that  Series' expense  ratio, while  the redemption  by  the
Adviser  of shares of  a Series may  have the effect  of increasing that Series'
expense ratio.
 
    DISTRIBUTOR  --  MFS  Fund  Distributors,  Inc.  ("MFD"),  a  wholly   owned
subsidiary  of MFS, is the distributor of  shares of each Series and also serves
as distributor for certain of the other mutual funds managed by MFS.
 
    SHAREHOLDER SERVICING AGENT  -- MFS Service  Center, Inc. (the  "Shareholder
Servicing  Agent"), a wholly owned subsidiary  of MFS, performs transfer agency,
certain dividend disbursing agency and other services for each Series.
 
8.  INFORMATION CONCERNING SHARES OF EACH SERIES
 
PURCHASES AND REDEMPTIONS
 
    The separate accounts of the Participating Insurance Companies place  orders
to  purchase and redeem shares of each  Series based on, among other things, the
amount of premium payments to be invested and surrender and transfer requests to
be effected on that day pursuant to Contracts. Orders received by the Trust  are
effected  on days on which the Exchange is open for trading. For orders received
by the Trust before  the close of  regular trading on  the Exchange (normally  4
p.m.  eastern time), such purchases and redemptions of the shares of each Series
are effected at the respective net asset  values per share determined as of  the
close  of  regular  trading on  the  Exchange  on that  same  day. Participating
Insurance Companies shall be the designee  of the Trust for receipt of  purchase
and  redemption orders from Contract holders  and receipt by such designee shall
constitute receipt by the Trust; provided that the Trust receives notice of such
order by 9:30 a.m. eastern time on the next following day on which the  Exchange
is open for trading. Payment for shares shall be by federal funds transmitted by
wire and must be received by 2:00 p.m. eastern time on the next following day on
which  the Exchange is  open for trading  after the purchase  order is received.
Redemption proceeds shall be by federal  funds transmitted by wire and shall  be
sent  by 2:00 p.m. eastern time on the  next following day on which the Exchange
is open for trading after  the redemption order is  received. No fee is  charged
the shareholders when they redeem Series shares.
 
    The  offering of shares of any Series may  be suspended for a period of time
and each  Series reserves  the  right to  refuse  any specific  purchase  order.
Purchase  orders may be refused if, in the Adviser's opinion, they are of a size
that would disrupt the management of a  Series. The Trust may suspend the  right
of  redemption of shares of any Series  and may postpone payment for any period:
(i) during which the Exchange is closed other than customary weekend and holiday
closings or during which  trading on the Exchange  is restricted; (ii) when  the
SEC  determines  that a  state of  emergency  exists which  may make  payment or
transfer not reasonably practicable;  (iii) as the SEC  may by order permit  for
the  protection of the security  holders of the Trust; or  (iv) at any time when
the Trust may, under applicable laws, rules and regulations, suspend payment  on
the redemption of its shares.
 
    Should  any conflict between Contract holders arise which would require that
a substantial  amount  of net  assets  be  withdrawn from  any  Series,  orderly
portfolio  management  could be  disrupted to  the  potential detriment  of such
Contract.
 
NET ASSET VALUE
 
    The net asset value per share of  each Series is determined each day  during
which  the Exchange is open for trading.  This determination is made once during
each such day as of  the close of regular trading  on the Exchange by  deducting
the  amount of the Series' liabilities from  the value of the Series' assets and
dividing  the   difference   by   the   number   of   shares   of   the   Series
 
                                       38
<PAGE>
outstanding. Values of assets in a Series' portfolio are determined on the basis
of  their market or  other fair value (amortized  cost value in  the case of the
Money Market  Series), as  described in  the SAI.  All investments,  assets  and
liabilities  are expressed in U.S. dollars  based upon current currency exchange
rates.
 
DISTRIBUTIONS
 
    Substantially all  of each  Series' (except  the Money  Market Series')  net
investment income for any calendar year is declared as dividends and paid to its
shareholders  as dividends on an annual basis. In addition, each Series may make
one or more distributions during the calendar year to its shareholders from  any
long-term  capital gains,  and may  also make one  or more  distributions to its
shareholders from short-term  capital gains. In  determining the net  investment
income  available  for distribution,  a Series  may rely  on projections  of its
anticipated net investment  income (which may  include short-term capital  gains
from  the sales  of securities  or other  assets, and,  if allowed  by a Series'
investment restrictions, premiums  from options  written), over  a longer  term,
rather than its actual net investment income for the period.
 
    Substantially  all of the Money Market Series' net investment income for any
calendar year is  declared as dividends  daily and paid  to its shareholders  as
dividends  on a monthly basis. Generally, those dividends are distributed on the
last business day of  the month in  the form of additional  shares of the  Money
Market  Series at the rate  of one share (and  fraction thereof) for each dollar
(and  fraction  thereof)  of  dividend  income  or,  at  the  election  of   the
shareholder,  in cash. Shares purchased become entitled to dividends declared as
of the first day following the date of investment.
 
    Shareholders of any of the Series may elect to receive dividends and capital
gain distributions in either cash or additional shares.
 
TAX STATUS
 
    Each Series of the Trust is treated as a separate entity for federal  income
tax  purposes. In  order to  minimize the taxes  each Series  would otherwise be
required to  pay, each  Series intends  to  qualify each  year as  a  "regulated
investment  company" under Subchapter M of the Internal Revenue Code of 1986, as
amended  ("the  Code"),  and  to  make  distributions  to  its  shareholders  in
accordance  with the timing requirements imposed by the Code. It is not expected
that any of the Series  will be required to pay  entity level federal income  or
excise taxes.
 
    Shares  of  the  Series  are offered  only  to  the  Participating Insurance
Companies' separate accounts  that fund Contracts.  See the applicable  Contract
prospectus  for a  discussion of  the federal  income tax  treatment of  (1) the
separate accounts that purchase  and hold Series shares  and (2) the holders  of
the  Contracts  that  are funded  through  those  accounts. In  addition  to the
diversification requirements  of Subchapter  M  of the  Code, each  Series  also
intends  to diversify its assets as required  by Code Section 817(h)(1), and the
regulations thereunder. See also "Tax Status" in the SAI.
 
DESCRIPTION OF SHARES, VOTING RIGHTS AND LIABILITIES
 
    Each Series currently has one class of shares, entitled Shares of Beneficial
Interest (without par  value). The Trust  has reserved the  right to create  and
issue  additional classes  and series  of shares,  in which  case each  class of
shares of a  series would  participate equally  in the  earnings, dividends  and
assets  attributable to that  class of that  particular series. Shareholders are
entitled to one vote for each share held, and shares of each Series are entitled
to vote  separately to  approve  investment advisory  agreements or  changes  in
investment  restrictions with respect  to that Series, but  shares of all Series
vote together  in  the  election  of  Trustees  and  selection  of  accountants.
Additionally,  each Series will vote separately on any other matter that affects
solely that Series, but  will otherwise vote together  with all other Series  on
all  other  matters.  The  Trust  does not  intend  to  hold  annual shareholder
meetings. The Declaration of Trust provides  that a Trustee may be removed  from
office  in  certain instances.  See "Description  of  Shares, Voting  Rights and
Liabilities" in the SAI.
 
    Each share of  a Series represents  an equal proportionate  interest in  the
Series  with each  share, subject to  the liabilities of  the particular Series.
Shares have  no pre-emptive  or conversion  rights. Shares  are fully  paid  and
non-assessable.  Should  a Series  be liquidated,  shareholders are  entitled to
share PRO RATA  in the net  assets available for  distribution to  shareholders.
Shares  will  remain  on  deposit  with  the  Shareholder  Servicing  Agent  and
certificates will not be issued.
 
                                       39
<PAGE>
    The Trust  is an  entity of  the  type commonly  known as  a  "Massachusetts
business  trust." Under  Massachusetts law,  shareholders of  such a  trust may,
under certain  circumstances, be  held  personally liable  as partners  for  its
obligations.  However, the  risk of  a shareholder  incurring financial  loss on
account of  shareholder liability  is  limited to  circumstances in  which  both
inadequate insurance existed (E.G., fidelity bonding and omission insurance) and
the Trust itself was unable to meet its obligations.
 
PERFORMANCE INFORMATION
 
    Each Series' performance may be quoted in advertising in terms of yield and,
except  for  the Money  Market  Series, total  return.  Performance is  based on
historical  results  and  is  not  intended  to  indicate  future   performance.
Performance  quoted for a  Series includes the effect  of deducting that Series'
expenses,  but  may  not  include  charges  and  expenses  attributable  to  any
particular  insurance  product. Excluding  these  charges from  quotations  of a
Series' performance  has  the  effect  of  increasing  the  performance  quoted.
Performance  for a  Series will  vary based on,  among other  things, changes in
market conditions, the  level of  interest rates and  the level  of the  Series'
expenses.  For further  information about  the Emerging  Growth Series, Research
Series, Growth With Income Series,  Total Return Series, Utilities Series,  High
Income  Series, World Governments  Series, Bond Series  and Money Market Series'
performance for the fiscal year ended December 31, 1995, please see the  Series'
Annual Reports. A copy of these Annual Reports may be obtained without charge by
contacting the Shareholder Servicing Agent (see back cover for address and phone
number).
 
    MONEY  MARKET  SERIES: From  time to  time, quotations  of the  Money Market
Series' "yield" and "effective yield"  may be included in advertisements,  sales
literature or reports to shareholders or prospective investors. The yield of the
Money  Market Series refers to the net investment income generated by the Series
over a specified  seven-day period (the  ending date of  which will be  stated).
Included  in "net  investment income" is  the amortization of  market premium or
accretion  of  market  and  original   issue  discount.  This  income  is   then
"annualized."  That is, the amount of income generated by the Series during that
week is assumed to be  generated during each week over  a 365 day period and  is
shown  as a  percentage. The  effective yield  is expressed  similarly but, when
annualized, the income earned by  an investment in the  Series is assumed to  be
reinvested.  The effective yield will be  slightly higher than the yield because
of the compounding effect of this assumed reinvestment.
 
    OTHER SERIES: From time  to time, quotations of  a Series' total return  and
yield  may  be  included  in  advertisements,  sales  literature  or  reports to
shareholders or prospective investors.  The total return of  a Series refers  to
return  assuming an investment has been held in  the Series for one year and for
the life of  the Series (the  ending date of  which will be  stated). The  total
return  quotations may  be expressed  in terms  of average  annual or cumulative
rates of return for  all periods quoted. Average  annual total return refers  to
the  average  annual compound  rate  of return  of  an investment  in  a Series.
Cumulative total  return  represents  the  cumulative  change  in  value  of  an
investment  in a Series. Both  will assume that all  dividends and capital gains
distributions were reinvested. The  yield of a Series  refers to net  investment
income generated by a Series over a specified 30-day (or one month) period. This
income  is then  "annualized." That  is, the amount  of income  generated by the
Series during that 30-day (or one month) period is assumed to be generated  over
a 12-month period and is shown as a percentage of net asset value.
 
EXPENSES
 
    The  Trust pays the compensation of the Trustees who are not officers of MFS
and all expenses of each Series (other than those assumed by MFS) including  but
not  limited to: governmental fees; interest  charges; taxes; membership dues in
the Investment Company Institute allocable to each Series; fees and expenses  of
independent  auditors, of legal counsel, and of any transfer agent, registrar or
dividend disbursing agent of each Series; expenses of repurchasing and redeeming
shares and servicing shareholder accounts;  expenses of preparing, printing  and
mailing   prospectuses,  periodic  reports,  notices  and  proxy  statements  to
shareholders and to governmental officers  and commissions; brokerage and  other
expenses  connected with  the execution,  recording and  settlement of portfolio
security transactions; insurance premiums; fees and expenses of Investors Bank &
Trust Company, the Trust's Custodian, for all services to each Series, including
safekeeping of funds and securities and maintaining required books and accounts;
expenses of  calculating the  net asset  value  of shares  of each  Series;  and
expenses   of  shareholder   meetings.  Expenses   relating  to   the  issuance,
registration and qualification of shares of
 
                                       40
<PAGE>
each Series and the preparation, printing and mailing of prospectuses are  borne
by  each Series except that the Distribution  Agreement with MFD requires MFD to
pay for prospectuses that  are to be  used for sales  purposes. Expenses of  the
Trust  which are not attributable to a specific Series are allocated between the
Series in a manner believed by management of the Trust to be fair and equitable.
 
    MFS has agreed  to pay until  December 31,  2004 the expenses  of the  World
Governments  Series such  that the Series'  aggregate operating  expenses do not
exceed, on an annualized basis, 1.00% of its average daily net assets; provided,
however, that this obligation may  be terminated or revised  at any time by  MFS
without  the consent of the Trust or the Series by notice in writing from MFS to
the Trust  on  behalf  of the  Series.  Such  payments by  MFS  are  subject  to
reimbursement  by the World Governments Series which will be accomplished by the
payment by the Series of an expense  reimbursement fee to MFS computed and  paid
monthly  at a percentage  of its average  daily net assets  for its then-current
fiscal year, with a limitation that immediately after such payment the aggregate
operating expenses of the Series would not exceed, on an annualized basis, 1.00%
of its average daily net assets. The expense reimbursement agreement  terminates
for  the World Governments Series  on the earlier of  the date on which payments
made thereunder  by the  Series equal  the prior  payment of  such  reimbursable
expenses by MFS or December 31, 2004.
 
    MFS  has agreed  to pay  expenses of  each of  the Series  (except the World
Governments Series and the Money Market Series) such that the respective Series'
aggregate operating expenses shall not exceed, on an annualized basis, 1.00%  of
the  average daily  net assets  of the respective  Series from  November 2, 1994
through December  31,  1996,  1.25% of  the  average  daily net  assets  of  the
respective  Series from January 1, 1997 through  December 31, 1998, and 1.50% of
the average  daily net  assets of  the respective  Series from  January 1,  1999
through  December  31,  2004; provided,  however,  that this  obligation  may be
terminated or revised at any time by MFS without the consent of the Trust or the
Series by notice in writing from MFS to the Trust on behalf of the Series.  Such
payments  by  MFS are  subject to  reimbursement  by each  Series which  will be
accomplished by the payment of the Series of an expense reimbursement fee to MFS
computed and paid  monthly at  a percentage  of the  respective Series'  average
daily  net  assets for  its  then-current fiscal  year,  with a  limitation that
immediately  after  such  payment  the  aggregate  operating  expenses  of   the
respective Series would not exceed, on an annualized basis, 1.00% of the average
daily  net assets of the  respective Series through December  31, 1996, 1.25% of
the average  daily net  assets of  the respective  Series from  January 1,  1997
through  December 31,  1998, and 1.50%  of the  average daily net  assets of the
respective Series from January 1, 1999  through December 31, 2004. This  expense
reimbursement  agreement terminates for  each such Series on  the earlier of the
date on which payments made thereafter by the respective Series equal the  prior
payment of such reimbursable expenses by MFS or December 31, 2004.
 
    MFS  has agreed to pay until December 31, 2004, expenses of the Money Market
Series such that the Series' aggregate  operating expenses shall not exceed,  on
an  annualized  basis, 0.60%  of the  average  daily net  assets of  the Series;
provided, however, that this obligation may be terminated or revised at any time
by MFS without the consent of the Trust or the Series by notice in writing  from
MFS  to the Trust on behalf  of the Series. Such payments  by MFS are subject to
reimbursement by the Series,  which will be accomplished  by the payment by  the
Series  of an expense  reimbursement fee to  MFS computed and  paid monthly at a
percentage of the average  daily net assets of  the Series for its  then-current
fiscal year, with a limitation that immediately after such payment the aggregate
operating expenses of the Series would not exceed, on an annualized basis, 0.60%
of  its average daily net assets.  This expense reimbursement terminates for the
Series on the  earlier of the  date on  which payments made  thereunder by  such
Series equal the prior payments of such reimbursable expenses by MFS or December
31, 2004.
 
SHAREHOLDER COMMUNICATIONS
 
    Owners  of Contracts issued  by Participating Insurance  Companies for which
shares of one or more  Series are the investment  vehicle will receive from  the
Participating  Insurance Companies semi-annual  financial statements and audited
year-end financial  statements certified  by the  Trust's independent  certified
public accountants. Each report will show the investments owned by the Trust and
the  valuations thereof  as determined  by the  Trustees and  will provide other
information about the Trust and its operations.
 
                                       41
<PAGE>
    Participating Insurance  Companies with  inquiries regarding  the Trust  may
call  the Trust's Shareholder  Servicing Agent. (See back  cover for address and
phone number.)
                              -------------------
 
   
    The SAI for  the Trust, dated  May 1, 1996,  as revised August  1, 1996,  as
amended  or supplemented from  time to time,  contains more detailed information
about each of the Series, including  information related to: (i) the  investment
policies  and  restrictions  of each  Series;  (ii) the  Trustees,  officers and
investment adviser of the Trust;  (iii) portfolio transactions; (iv) the  shares
of each Series, including rights and liabilities of shareholders; (v) the method
used to calculate yield and total rate of return quotations of each Series; (vi)
the determination of net asset value of shares of each Series; and (vii) certain
voting rights of shareholders of each Series.
    
 
                                       42
<PAGE>
                                                                      APPENDIX A
 
                          DESCRIPTION OF BOND RATINGS
 
The ratings of Moody's, S&P and Fitch represent their opinions as to the quality
of  various debt instruments. It should be emphasized, however, that ratings are
not absolute standards of quality. Consequently, debt instruments with the  same
maturity,  coupon and rating may have different yields while debt instruments of
the same maturity and coupon with different ratings may have the same yield.
 
                        MOODY'S INVESTORS SERVICE, INC.
 
    AAA: 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 edged." 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.
 
    AA: 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  fluctuations  of
protective  elements may be of greater amplitude  or there may be other elements
present which  make the  long-term  risks appear  somewhat  larger than  in  Aaa
securities.
 
    A:  Bonds which are rated A possess many favorable investment 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.
 
    BAA: 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.
 
    BA:  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.
 
    B:  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.
 
    CAA:  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.
 
    CA:  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.
 
    C: Bonds which are 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.
 
    ABSENCE OF RATING: Where no rating has  been assigned or where a rating  has
been  suspended or withdrawn, it may be  for reasons unrelated to the quality of
the issue.
 
    Should no rating be assigned, the reason may be one of the following:
 
    1.  an application for rating was not received or accepted;
 
    2.  the issue or issuer belongs  to a group of securities or companies  that
       are not rated as a matter of policy;
 
                                      A-1
<PAGE>
    3.  there is a lack of essential data pertaining to the issue or issuer; or
 
    4.    the  issue was  privately  placed, in  which  case the  rating  is not
       published in Moody's publications.
 
    Suspension or withdrawal may occur if new and material circumstances  arise,
the  effects  of which  preclude satisfactory  analysis; if  there is  no longer
available reasonable up-to-date  data to permit  a judgment to  be formed; if  a
bond is called for redemption; or for other reasons.
 
                       STANDARD & POOR'S RATINGS SERVICES
 
    AAA:  Debt rated AAA has the highest rating assigned by S&P. Capacity to pay
interest and repay principal is extremely strong.
 
    AA: Debt rated  AA has  a very  strong capacity  to pay  interest and  repay
principal and differs from the highest rated issues only in small degree.
 
    A:  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.
 
    BBB:  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.
 
    BB:  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.
 
    B: 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.
 
    CCC:  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.
 
    CC:  The rating CC is typically applied  to debt subordinated to senior debt
that is assigned an actual or implied CCC rating.
 
    C: 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.
 
    CI: The rating CI is reserved for income bonds on which no interest is being
paid.
 
    D:  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  S&P 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.
 
                                      A-2
<PAGE>
    PLUS (+) OR MINUS  (-): The 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.
 
    NR: Indicates  that no  public  rating has  been  requested, that  there  is
insufficient  information on which to base a rating, or that S&P does not rate a
particular type of obligation as a matter of policy.
 
A-1 AND P-1 COMMERCIAL PAPER RATINGS
 
Description of S&P, Fitch and Moody's highest commercial paper ratings:
 
    The rating "A" is  the highest commercial paper  rating assigned by S&P  and
Fitch,  and issues  so rated  are regarded as  having the  greatest capacity for
timely payment. Issues in the "A" category are delineated with the numbers 1,  2
and  3 to indicate the relative degree  of safety. The A-1 designation indicates
that the degree  of safety regarding  timely payment is  either overwhelming  or
very  strong.  Those  A-1  issues  determined  to  possess  overwhelming  safety
characteristics will be denoted with a plus (+) sign designation.
 
    The rating P-1 is the highest  commercial paper rating assigned by  Moody's.
Issuers  rated P-1 have a superior ability for repayment. P-1 repayment capacity
will normally be evidenced by the following characteristics: (1) leading  market
positions  in well  established industries;  (2) high  rates of  return on funds
employed; (3) conservative  capitalization structure with  moderate reliance  on
debt and ample asset protection; (4) broad margins in earnings coverage of fixed
financial  charges and high  internal cash generation;  and (5) well established
access to  a  range  of  financial markets  and  assured  sources  of  alternate
liquidity.
 
                         FITCH INVESTORS SERVICE, INC.
 
    AAA:  Bonds  considered to  be investment  grade and  of the  highest credit
quality. The obligor  has an exceptionally  strong ability to  pay interest  and
prepay  principal, which  is unlikely to  be affected  by reasonably foreseeable
events.
 
    AA: Bonds considered to be investment grade and of very high credit quality.
The obligor's  ability to  pay  interest and  repay  principal is  very  strong,
although  not quite as strong  as bonds rated 'AAA'.  Because bonds rated in the
'AAA' and 'AA' categories are not significantly vulnerable to foreseeable future
developments, short-term debt of these issuers is generally rated 'F-1+'.
 
    A: Bonds considered to be investment grade and of very high credit  quality.
The  obligor's ability to pay  interest and repay principal  is considered to be
strong, but may be more vulnerable to adverse changes in economic conditions and
circumstances than bonds with higher ratings.
 
    BBB: Bonds  considered to  be investment  grade and  of satisfactory  credit
quality. The obligor's ability to pay interest and repay principal is considered
to  be  adequate.  Adverse  changes in  economic  conditions  and circumstances,
however, are more likely to have  adverse impact on these bonds and,  therefore,
impair  timely payment. The likelihood that the ratings of these bonds will fall
below investment grade is higher than for bonds with higher ratings.
 
    BB: Bonds are considered speculative. The obligor's ability to pay  interest
and  repay  principal may  be affected  over time  by adverse  economic changes.
However, business  and  financial alternatives  can  be identified  which  could
assist the obligor in satisfying its debt service requirements.
 
    B:  Bonds are considered  highly speculative. While bonds  in this class are
currently meeting debt service requirements, the probability of continued timely
payment of  principal and  interest  reflects the  obligor's limited  margin  of
safety and the need for reasonable business and economic activity throughout the
life of the issue.
 
    CCC: Bonds have certain identifiable characteristics which, if not remedied,
may  lead to default.  The ability to meet  obligations requires an advantageous
business and economic environment.
 
                                      A-3
<PAGE>
    CC: Bonds are  minimally protected.  Default in payment  of interest  and/or
principal seems probable over time.
 
    C: Bonds are in imminent default in payment of interest of principal.
 
    PLUS(+)  MINUS(-): Plus  and minus  signs are used  with a  rating symbol to
indicate the relative position of a  credit within the rated category. Plus  and
minus signs, however, are not used in the 'AAA' category.
 
    NR: indicates that Fitch does not rate the specific issue.
 
    CONDITIONAL:  A conditional rating is  premised on the successful completion
of a project or the occurrence of a specific event.
 
    SUSPENDED: A rating is suspended when Fitch deems the amount of  information
available from the issuer to be inadequate for rating purposes.
 
    WITHDRAWN:  A rating will be withdrawn when an issue matures or is called or
refinanced, and, at Fitch's discretion, when  an issuer fails to furnish  proper
and timely information.
 
    FITCHALERT:  Ratings  are placed  on FitchAlert  to  notify investors  of an
occurrence that is likely to result in a rating change and the likely  direction
of  such  change.  These are  designated  a "Positive,"  indicating  a potential
upgrade, "Negative," for potential downgrade,  or "Evolving," where ratings  may
be lowered. FitchAlert is relatively short-term and should be resolved within 12
months.
 
                        DUFF & PHELPS CREDIT RATING CO.
 
    AAA:  Bonds  considered to  be investment  grade and  of the  highest credit
quality. The obligor  has an exceptionally  strong ability to  pay interest  and
repay  principal, which  is unlikely  to be  affected by  reasonably foreseeable
events.
 
    AA: Bonds considered to be investment grade and or very high credit quality.
The obligor's  ability to  pay  interest and  repay  principal is  very  strong,
although  not quite as strong  as bonds rated 'AAA'.  Because bonds rated in the
'AAA' and 'AA' categories are not significantly vulnerable to foreseeable future
developments, short-term debt of these issuers is generally rated 'D-1+'.
 
    A: Bonds considered to be investment  grade and of high credit quality.  The
obligor's  ability  to pay  interest  and repay  principal  is considered  to be
strong, but may be more vulnerable to adverse changes in economic conditions and
circumstances than bonds with higher ratings.
 
    BBB: Bonds  considered to  be investment  grade and  of satisfactory  credit
quality. The obligor's ability to pay interest and repay principal is considered
to  be  adequate.  Adverse  changes in  economic  conditions  and circumstances,
however, are more likely  to have adverse impact  on these bonds, and  therefore
impair  timely payment. The likelihood that the ratings of these bonds will fall
below investment grade is higher than for bonds with higher ratings.
 
    BB: Bonds are considered speculative. The obligor's ability to pay  interest
and  repay  principal may  be affected  over time  by adverse  economic changes.
However, business,  and financial  alternatives can  be identified  which  could
assist the obligor in satisfying its debt service requirements.
 
    B:  Bonds are considered  highly speculative. While bonds  in this class are
currently meeting debt service requirements, the probability of continued timely
payment of  principal and  interest  reflects the  obligor's limited  margin  of
safety and the need for reasonable business and economic activity throughout the
life of the issue.
 
    CCC: Bonds have certain identifiable characteristics which, if not remedied,
may  lead to default.  The ability to meet  obligations requires an advantageous
business and economic environment.
 
                                      A-4
<PAGE>
    PLUS (+) OR MINUS (-): Plus and minus signs are used with a rating symbol to
indicate the relative position  of a credit within  a rating category. Plus  and
minus signs, however, are not used in the 'AAA' category.
 
    NR: Indicates that Duff & Phelps does not rate the specific issue.
 
                        DUFF & PHELPS SHORT-TERM RATINGS
 
    D-1+:  Highest certainty of timely  payment. Short-term liquidity, including
internal operation factors  and/or access  to alternative sources  of funds,  is
outstanding  and  safety  is  just  below  risk-free  U.S.  Treasury  short-term
obligations.
 
    D-1: Very high certainty of timely payment. Liquidity factors are  excellent
and supported by good fundamental protection factors. Risk factors are minor.
 
    D-1-:  High certainty  of timely payment.  Liquidity factors  are strong and
supported by good fundamental protection factors. Risk factors are very small.
 
    D-2: Good  certainty  of  timely  payment.  Liquidity  factors  and  company
fundamentals  are  sound.  Although  ongoing  funding  needs  may  enlarge total
financing requirements,  access to  capital markets  is good.  Risk factors  are
small.
 
    D-3:  Satisfactory liquidity and other  protection factors qualify issues as
to investment grade.  Risk factors  are larger  and subject  to more  variation.
Nevertheless, timely payment is expected.
 
    D-4:  Speculative investment characteristics. Liquidity is not sufficient to
insure against disruption in debt  service. Operating factors and market  access
may be subject to a high degree of variation.
 
    D-5: Issuer failed to meet scheduled principal and/or interest payments.
 
                                      A-5
<PAGE>
                                                                      APPENDIX B
 
                  PRINCIPAL SECTORS OF THE UTILITIES INDUSTRY
 
The  principal sectors of the utility industry in which the Utilities Series may
invest are discussed below.
 
ELECTRIC -- The electric utility industry consists of companies that are engaged
principally in  the  generation,  transmission  and  sale  of  electric  energy,
although  many  also provide  other  energy-related services.  Domestic electric
utility companies, in general,  recently have been  favorably affected by  lower
fuel  and financing costs and the full  or near completion of major construction
programs. In  addition, many  of these  companies recently  have generated  cash
flows  in excess  of current  operating expenses  and construction expenditures,
permitting some  degree of  diversification  into unregulated  businesses.  Some
electric  utilities have also taken advantage of the right to sell power outside
of their traditional geographic  areas. Electric utility companies  historically
have  been subject  to the  risks associated  with increases  in fuel  and other
operating  costs,  high  interest  costs   on  borrowings  needed  for   capital
construction  programs, costs associated with  compliance with environmental and
safety regulations and changes in the regulatory climate.
 
    In the U.S., the construction and  operation of nuclear power facilities  is
subject  to  increased scrutiny  by, and  evolving  regulations of,  the Nuclear
Regulatory  Commission  and  state  agencies  having  comparable   jurisdiction.
Increased  scrutiny might  result in higher  operating costs  and higher capital
expenditures, with the risk that the regulators may disallow inclusion of  these
costs  in rate authorizations or the risk that a company may not be permitted to
operate or  complete  construction of  a  facility. In  addition,  operators  of
nuclear power plants may be subject to significant costs for disposal of nuclear
fuel and for the de-commissioning of such plants.
 
TELECOMMUNICATIONS  -- The telephone industry  is large and highly concentrated.
Companies that distribute telephone services and provide access to the telephone
networks comprise the greatest portion  of this segment. Telephone companies  in
the U.S. are still experiencing the effects of the breakup of American Telephone
&  Telegraph Company, which  occurred in 1984. Since  1984, companies engaged in
telephone communication services  have expanded  their non-regulated  activities
into  other businesses, including cellular  telephone services, data processing,
equipment retailing,  computer software  and  hardware services,  and  financial
services.  This  expansion has  provided  significant opportunities  for certain
telephone companies to  increase their  earnings and dividends  at faster  rates
than   had  been  allowed  in  traditionally  regulated  businesses.  Increasing
competition, technological innovations  and other  structural changes,  however,
could adversely affect the profitability of such utilities.
 
GAS  --  Gas  transmission companies  and  gas distribution  companies  are also
undergoing significant changes. In  the U.S., interstate transmission  companies
are regulated by the Federal Energy Regulatory Commission, which is reducing its
regulation  of the  industry. Many companies  have diversified into  oil and gas
exploration and development, making returns more sensitive to energy prices.  In
the  recent  decade,  gas  utility companies  have  been  adversely  affected by
disruptions in  the  oil industry  and  have  also been  affected  by  increased
concentration   and  competition.  In  the  opinion  of  the  Adviser,  however,
environmental considerations  could  improve the  gas  industry outlook  in  the
future.  For example, natural gas is the  cleanest of the hydrocarbon fuels, and
this may result in incremental shifts in fuel consumption toward natural gas and
away from oil and coal.
 
WATER -- Water supply utilities  are companies that collect, purify,  distribute
and  sell  water. In  the  U.S. and  around the  world,  the industry  is highly
fragmented because  most  of  the  supplies  are  owned  by  local  authorities.
Companies  in this industry are generally  mature and are experiencing little or
no per capita volume growth.
 
                              -------------------
 
    There can  be  no assurance  that  the positive  developments  noted  above,
including those relating to changing regulation, will occur or that risk factors
other than those noted above will not develop in the future.
 
                                      B-1
<PAGE>
                                                                      APPENDIX C
 
                             MFS HIGH INCOME SERIES
                          PORTFOLIO COMPOSITION CHART
                    FOR FISCAL YEAR ENDED DECEMBER 31, 1995
 
The table below shows the percentages of the Series' assets at December 31, 1995
invested  in bonds  assigned to  the various  rating categories  by S&P, Moody's
(provided only for bonds not rated by  S&P), Fitch (provided only for bonds  not
rated by S&P or Moody's) and Duff & Phelps (provided only for bonds not rated by
S&P,  Moody's  or  Fitch)  and in  unrated  bonds  determined by  MFS  to  be of
comparable quality. For split rated bonds, the  S&P rating is used, and when  an
S&P  rating  is unavailable,  secondary sources  are  selected in  the following
order: Moody's, Duff & Phelps, and Fitch.
 
<TABLE>
<CAPTION>
              COMPILED
RATING         RATINGS      TOTAL
- -----------  -----------  ----------
<S>          <C>          <C>         <C>
AAA/Aaa              --          --
AA/Aa                --          --
A/A                  --          --
BBB/Baa              --          --
BB/Ba             33.30%      33.30%
B/B               55.40       55.40
CCC/Caa            5.10        5.10
CC/Ca                --          --
C/C                  --          --
Default              --          --
                  -----       -----
    TOTAL         93.80%      93.80%
</TABLE>
 
The chart does  not necessarily  indicate what  the composition  of the  Series'
portfolio will be in subsequent years. Rather, the Series' investment objective,
policies  and restrictions indicate the extent  to which the Series may purchase
securities in the various categories.
 
                                      C-1
<PAGE>
                                                              APPENDIX C (CONT.)
 
                                MFS BOND SERIES
                          PORTFOLIO COMPOSITION CHART
                    FOR FISCAL YEAR ENDED DECEMBER 31, 1995
 
The table below shows the percentages of the Series' assets at December 31, 1995
invested in bonds  assigned to  the various  rating categories  by S&P,  Moody's
(provided  only for bonds not rated by  S&P), Fitch (provided only for bonds not
rated by S&P or Moody's) and Duff & Phelps (provided only for bonds not rated by
S&P, Moody's  or  Fitch)  and in  unrated  bonds  determined by  MFS  to  be  of
comparable  quality. For split rated bonds, the  higher of S&P or Moody's rating
is used. When neither an S&P  or Moody's rating is available, secondary  sources
are selected in the following order: Fitch and Duff & Phelps.
 
<TABLE>
<CAPTION>
              COMPILED
RATING         RATINGS      TOTAL
- -----------  -----------  ----------
<S>          <C>          <C>         <C>
AAA/Aaa           44.15%      44.15%
AA/Aa              4.49        4.49
A/A                7.05        7.05
BBB/Baa           25.72       25.72
BB/Ba              7.26        7.26
B/B                  --          --
CCC/Caa              --          --
CC/Ca                --          --
C/C                  --          --
Default              --          --
                  -----       -----
    TOTAL         88.67%      88.67%
</TABLE>
 
The  chart does  not necessarily  indicate what  the composition  of the Series'
portfolio will be in subsequent years. Rather, the Series' investment objective,
policies and restrictions indicate the extent  to which the Series may  purchase
securities in the various categories.
 
                                      C-2
<PAGE>
INVESTMENT ADVISER
Massachusetts Financial Services Company
500 Boylston Street, Boston, MA 02116
(617) 954-5000
(800) 637-8730
 
DISTRIBUTOR
MFS Fund Distributors, Inc.
500 Boylston Street, Boston, MA 02116
(617) 954-5000
CUSTODIAN
Investors Bank & Trust Company
89 South Street, Boston, MA 02111
 
DIVIDEND DISBURSING AGENT
State Street Bank and Trust Company
225 Franklin Street, Boston, MA 02110
 
SHAREHOLDER SERVICING AGENT
MFS Service Center, Inc.
500 Boylston Street, Boston, MA 02116
Toll free: (800) 637-8730
MAILING ADDRESS:
P.O. Box 1400, Boston, MA 02104-9985
INDEPENDENT AUDITORS
Deloitte & Touche LLP
125 Summer Street, Boston, MA 02110
                      ------------------------------------
 
                           MFS-REGISTERED TRADEMARK-
                                    VARIABLE
                                   INSURANCE
                                     TRUST
 
                                     [LOGO]
 
                                   PROSPECTUS
 
   
                                  MAY 1, 1996
                           AS REVISED AUGUST 1, 1996
    
 
                                      [LOGO]
 
               MFS-REGISTERED TRADEMARK- VARIABLE INSURANCE TRUST
                     500 Boylston Street, Boston, MA 02116
 
                            ------------------------
<PAGE>
 
   
<TABLE>
<S>                                      <C>
MFS-REGISTERED TRADEMARK- VARIABLE       STATEMENT OF
INSURANCE TRUST-SM-                      ADDITIONAL INFORMATION
 
                                                                 MAY 1, 1996
                                                   AS REVISED AUGUST 1, 1996
</TABLE>
    
 
- --------------------------------------------------------------------------------
 
   
<TABLE>
<CAPTION>
                                                                                                     Page
                                                                                                     -----
<C>        <S>                                                                                    <C>
       1.  General Information and Definitions..................................................           2
       2.  Investment Techniques................................................................           2
       3.  Investment Restrictions..............................................................          16
       4.  Management of the Trust..............................................................          18
           Trustees.............................................................................          18
           Officers.............................................................................          18
           Investment Adviser...................................................................          19
           Investment Advisory Agreement........................................................          19
           Custodian............................................................................          20
           Shareholder Servicing Agent..........................................................          20
           Distributor..........................................................................          20
       5.  Portfolio Transactions and Brokerage Commissions.....................................          20
       6.  Tax Status...........................................................................          22
       7.  Net Income and Distributions.........................................................          22
       8.  Determination of Net Asset Value; Performance Information............................          23
       9.  Description of Shares, Voting Rights and Liabilities.................................          25
      10.  Independent Auditors and Financial Statements........................................          25
      11.  Appendix A...........................................................................         A-1
      12.  Appendix B...........................................................................         B-1
</TABLE>
    
 
MFS-Registered Trademark- VARIABLE INSURANCE TRUST-SM-
500 Boylston Street, Boston, Massachusetts 02116
(617) 954-5000
 
   
This  Statement of Additional Information, as  amended or supplemented from time
to time, ("SAI") sets  forth information which may  be of interest to  investors
but  which is not necessarily  included in the Trust's  Prospectus, dated May 1,
1996, as revised August  1, 1996, as  supplemented from time  to time. This  SAI
should  be  read in  conjunction with  the Prospectus,  a copy  of which  may be
obtained without charge by contacting the Shareholder Servicing Agent (see  back
cover for address and phone number).
    
 
THIS  SAI RELATES TO THE TWELVE SERIES OF THE TRUST IDENTIFIED ON PAGE 2 HEREOF.
SHARES OF THESE  SERIES ARE OFFERED  TO SEPARATE ACCOUNTS  OF CERTAIN  INSURANCE
COMPANIES  ("PARTICIPATING INSURANCE COMPANIES") THAT  FUND VARIABLE ANNUITY AND
VARIABLE  LIFE  INSURANCE   CONTRACTS  ("CONTRACTS").  PARTICIPATING   INSURANCE
COMPANIES  MAY CHOOSE TO  OFFER AS INVESTMENT OPTIONS  TO THEIR CONTRACT HOLDERS
LESS THAN ALL OF THE  TRUST'S SERIES, IN WHICH  CASE THE TRUST'S PROSPECTUS  FOR
THOSE  PARTICIPATING INSURANCE  COMPANIES WILL BE  REVISED TO  DESCRIBE ONLY THE
SERIES OFFERED. THEREFORE, WHILE CERTAIN VERSIONS OF THE TRUST'S PROSPECTUS WILL
DESCRIBE ONLY CERTAIN OF  THE TRUST'S SERIES, THIS  SAI INCLUDES INFORMATION  ON
OTHER  SERIES WHICH ARE NOT OFFERED PURSUANT TO SUCH PROSPECTUSES; IN WHICH CASE
INFORMATION  CONCERNING   THESE  OTHER   SERIES  CONTAINED   HEREIN  SHOULD   BE
DISREGARDED.
 
THIS  SAI IS NOT A PROSPECTUS AND  IS AUTHORIZED FOR DISTRIBUTION TO PROSPECTIVE
INVESTORS ONLY IF PRECEDED OR ACCOMPANIED BY A CURRENT PROSPECTUS.
 
                                                                UST-13 12/93 785
<PAGE>
1.  GENERAL INFORMATION AND DEFINITIONS
 
   
MFS  Variable Insurance Trust (the "Trust") is a professionally managed open-end
management investment company  (a "mutual fund")  consisting of twelve  separate
series:  MFS Emerging  Growth Series (the  "Emerging Growth  Series"), MFS Value
Series (the "Value Series"),  MFS Research Series  (the "Research Series"),  MFS
Growth  With Income Series  (the "Growth With Income  Series"), MFS Total Return
Series (the  "Total  Return  Series"),  MFS  Utilities  Series  (the  "Utilities
Series"),  MFS  High  Income  Series  (the  "High  Income  Series"),  MFS  World
Governments Series (the "World Governments Series"), MFS Strategic Fixed  Income
Series  (the  "Strategic  Fixed  Income Series"),  MFS  Bond  Series  (the "Bond
Series"), MFS Limited Maturity  Series (the "Limited  Maturity Series") and  MFS
Money  Market Series (the  "Money Market Series")  (individually or collectively
hereinafter referred to  as a  "Series" or  the "Series").  The Emerging  Growth
Series  was previously known as  the "OTC Series" until  its name was changed on
June 1, 1995. The Value Series was previously known as the "Growth Series" until
its name was changed on April 25, 1996.
    
 
Each Series' investment adviser and distributor is, respectively,  Massachusetts
Financial  Services Company ("MFS" or the  "Adviser") and MFS Fund Distributors,
Inc. ("MFD" or the "Distributor"), each a Delaware corporation.
 
2.  INVESTMENT TECHNIQUES
 
LENDING OF PORTFOLIO  SECURITIES: Each of  the Series (except  the Money  Market
Series)  may seek to  increase its income by  lending portfolio securities. Such
loans will usually be made only to  member firms of the New York Stock  Exchange
(the  "Exchange") (and  subsidiaries thereof)  and member  banks of  the Federal
Reserve System, and would be required  to be secured continuously by  collateral
in  cash, United States ("U.S.") Treasury securities or an irrevocable letter of
credit maintained on a current basis at  an amount at least equal to the  market
value of the securities loaned. A Series would have the right to call a loan and
obtain the securities loaned at any time on customary industry settlement notice
(which  will not usually exceed five business days). For the duration of a loan,
the Series would continue to receive the equivalent of the interest or dividends
paid by the issuer on the securities loaned and would also receive  compensation
from  the investment of cash collateral. The Series would not, however, have the
right to vote any  securities having voting rights  during the existence of  the
loan, but the Series would call the loan in anticipation of an important vote to
be  taken among  holders of the  securities or  of the giving  or withholding of
their consent  on a  material matter  affecting the  investment. As  with  other
extensions of credit there are risks of delay in recovery or even loss of rights
in  the  collateral  should the  borrower  of the  securities  fail financially.
However, the loans would be  made only to firms deemed  by the Adviser to be  of
good standing, and when, in the judgment of the Adviser, the consideration which
can  be  earned  currently from  securities  loans  of this  type  justifies the
attendant risk.  If the  Adviser  determines to  make  securities loans,  it  is
intended  that the value  of the securities  loaned would not  exceed 10% of the
value of a Series' net assets.
 
REPURCHASE AGREEMENTS: Each of the  Series may enter into repurchase  agreements
with  sellers who are member firms (or  a subsidiary thereof) of the Exchange or
members of  the  Federal  Reserve System,  recognized  primary  U.S.  Government
securities  dealers or  institutions which the  Adviser has determined  to be of
comparable creditworthiness. The  securities that a  Series purchases and  holds
through  its agent are U.S. Government securities, the values of which are equal
to or greater than  the repurchase price  agreed to be paid  by the seller.  The
repurchase  price may  be higher than  the purchase price,  the difference being
income to the Series,  or the purchase  and repurchase prices  may be the  same,
with  interest at a standard rate due to the Series together with the repurchase
price on repurchase. In either  case, the income to  the Series is unrelated  to
the interest rate on the Government securities.
 
The  repurchase agreement provides that in the event the seller fails to pay the
price agreed upon on the agreed upon  delivery date or upon demand, as the  case
may be, a Series will have the right to liquidate the securities. If at the time
the  Series is  contractually entitled  to exercise  its right  to liquidate the
securities, the seller is subject to  a proceeding under the bankruptcy laws  or
its  assets are otherwise subject  to a stay order,  the Series' exercise of its
right to liquidate the  securities may be delayed  and result in certain  losses
and  costs to the Series.  Each Series has adopted  and follows procedures which
are intended to minimize the risks  of repurchase agreements. For example,  each
Series  only enters into repurchase agreements  after the Adviser has determined
that the  seller  is  creditworthy,  and  the  Adviser  monitors  that  seller's
creditworthiness on an ongoing basis. Moreover, under such agreements, the value
of the securities (which are marked to market every business day) is required to
be  greater than the repurchase price, and a Series has the right to make margin
calls at any time  if the value  of the securities falls  below the agreed  upon
margin.
 
"WHEN-ISSUED"  SECURITIES: Each of  the Series (except  the Research Series, the
World Governments Series and the Money Market Series) may purchase securities on
a "when-issued"  or on  a "forward  delivery" basis.  Although a  Series is  not
limited  as to the amount of these  securities for which it may have commitments
to purchase on such  bases, it is expected  that under normal circumstances  the
Series will not commit more than 20% of its total assets to such purchases. When
a  Series commits  to purchase these  securities on a  "when-issued" or "forward
delivery" basis, it will set up procedures consistent with the General Statement
of Policy of the Securities and Exchange Commission (the "SEC") concerning  such
purchases.  Since that policy currently recommends that an amount of the Series'
assets equal to the  amount of the  purchase be held aside  or segregated to  be
used  to pay for  the commitment, the  Series will always  have cash, short-term
money market instruments or high quality debt securities sufficient to cover any
commitments or to limit any potential  risk. Although no Series intends to  make
such purchases for speculative purposes and each Series intends to adhere to the
provisions  of the SEC policy, purchases of securities on such bases may involve
more risk than other types of purchases. For example, a Series may have to  sell
assets which have been set aside in order to meet redemptions. Also, if a Series
determines  it  is necessary  to sell  the  "when-issued" or  "forward delivery"
securities before  delivery, the  Series  may incur  a  loss because  of  market
fluctuations since the time the commitment to purchase such securities was made.
 
MORTGAGE  "DOLLAR ROLL" TRANSACTIONS: Each of  the Total Return Series, the Bond
Series, the Strategic Fixed Income Series, the
 
                                       2
<PAGE>
World Governments Series, the  Limited Maturity Series,  the High Income  Series
and  the Utilities  Series may  enter into  mortgage "dollar  roll" transactions
pursuant to which it sells mortgage-backed securities for delivery in the future
and simultaneously contracts to repurchase substantially similar securities on a
specified future date. During the roll  period, a Series foregoes principal  and
interest paid on the mortgage-backed securities. A Series is compensated for the
lost  interest by the difference  between the current sales  price and the lower
price for the future purchase  (often referred to as the  "drop") as well as  by
the  interest earned on the cash proceeds of the initial sale. A Series may also
be compensated by receipt of a commitment fee. In the event that the party  with
whom  the  Series contracts  to replace  substantially  similar securities  on a
future date fails  to deliver such  securities, the  Series may not  be able  to
obtain  such securities at the price specified in such contract and thus may not
benefit from the  price differential  between the  current sales  price and  the
repurchase price.
 
CORPORATE ASSET-BACKED SECURITIES: Each of the Emerging Growth Series, the Total
Return Series, the Bond Series, the Limited Maturity Series, the Strategic Fixed
Income  Series, the High  Income Series and  the Utilities Series  may invest in
corporate asset-backed  securities.  These  securities,  issued  by  trusts  and
special  purpose corporations, are  backed by a  pool of assets,  such as credit
card and automobile loan receivables,  representing the obligations of a  number
of different parties.
 
Corporate  asset-backed securities present  certain risks. For  instance, in the
case of credit card  receivables, these securities may  not have the benefit  of
any  security interest  in the related  collateral. Credit  card receivables are
generally unsecured and the debtors are  entitled to the protection of a  number
of  state and federal consumer credit laws,  many of which give such debtors the
right to set off certain amounts owed on the credit cards, thereby reducing  the
balance  due. Most  issuers of  automobile receivables  permit the  servicers to
retain possession of the  underlying obligations. If the  servicer were to  sell
these  obligations to another  party, there is  a risk that  the purchaser would
acquire an interest superior  to that of the  holders of the related  automobile
receivables.  In addition, because of the large number of vehicles involved in a
typical issuance and technical  requirements under state  laws, the trustee  for
the  holders  of  the automobile  receivables  may  not have  a  proper security
interest in all of the obligations backing such receivables. Therefore, there is
the possibility  that recoveries  on  repossessed collateral  may not,  in  some
cases,  be available  to support  payments on  these securities.  The underlying
assets  (E.G.,  loans)  are  also  subject  to  prepayments  which  shorten  the
securities weighted average life and may lower their return.
 
Corporate  asset-backed  securities  are  often  backed  by  a  pool  of  assets
representing the obligations  of a number  of different parties.  To lessen  the
effect  of  failures by  obligors  on underlying  assets  to make  payments, the
securities  may  contain  elements  of  credit  support  which  fall  into   two
categories:   (i)  liquidity  protection  and  (ii)  protection  against  losses
resulting from  ultimate  default  by  an  obligor  on  the  underlying  assets.
Liquidity  protection  refers to  the provision  of  advances, generally  by the
entity administering the pool of assets, to ensure that the receipt of  payments
on  the underlying  pool occurs in  a timely fashion.  Protection against losses
resulting from ultimate  default ensures payment  through insurance policies  or
letters of credit obtained by the issuer or sponsor from third parties. A Series
will  not pay any additional or separate  fees for credit support. The degree of
credit support  provided  for  each  issue  is  generally  based  on  historical
information  respecting the level of credit  risk associated with the underlying
assets. Delinquency or  loss in  excess of that  anticipated or  failure of  the
credit  support could  adversely affect  the return on  an investment  in such a
security.
 
COLLATERALIZED MORTGAGE OBLIGATIONS AND MULTICLASS PASS-THROUGH SECURITIES: Each
of the Bond  Series, the Strategic  Fixed Income Series,  the World  Governments
Series,  the Limited Maturity  Series, the High Income  Series and the Utilities
Series may invest a portion of its assets in collateralized mortgage obligations
or "CMOs",  which  are debt  obligations  collateralized by  mortgage  loans  or
mortgage  pass-through securities  (such collateral referred  to collectively as
"Mortgage Assets").  Unless  the  context indicates  otherwise,  all  references
herein to CMOs include multiclass pass-through securities.
 
Interest  is paid or accrues on all classes  of the CMOs on a monthly, quarterly
or semi-annual basis. The principal of  and interest on the Mortgage Assets  may
be allocated among the several classes of a series of a CMO in innumerable ways.
In   a  common  structure,  payments   of  principal,  including  any  principal
prepayments, on the Mortgage Assets are applied to the classes of the series  of
a  CMO in the order of their  respective stated maturities or final distribution
dates, so that no payment of principal will  be made on any class of CMOs  until
all  other classes having an earlier  stated maturity or final distribution date
have been paid in full. Certain  CMOs may be stripped (securities which  provide
only the principal or interest factor of the underlying security). See "Stripped
Mortgage-Backed  Securities" below for a discussion of the risks of investing in
these stripped securities and of  investing in classes consisting of  principals
of interest payments or principal payments.
 
Each  of  the  Bond  Series,  the  Strategic  Fixed  Income  Series,  the  World
Governments Series, the Limited Maturity Series, the High Income Series and  the
Utilities  Series may also invest in  parallel pay CMOs and Planned Amortization
Class CMOs ("PAC Bonds"). Parallel pay  CMOs are structured to provide  payments
of  principal on each  payment date to  more than one  class. These simultaneous
payments are taken into account in calculating the stated maturity date or final
distribution date of each  class, which, as with  other CMO structures, must  be
retired  by  its stated  maturity date  or  final distribution  date but  may be
retired earlier.
 
STRIPPED MORTGAGE-BACKED  SECURITIES: Each  of the  Bond Series,  the  Strategic
Fixed Income Series, the World Governments Series and the High Income Series may
invest  a portion of its assets  in stripped mortgage-backed securities ("SMBS")
which are derivative  multiclass mortgage  securities issued by  agencies of  or
instrumentalities  of  the U.S.  Government, or  by  private originators  of, or
investors in mortgage loans, including  savings and loan institutions,  mortgage
banks, commercial banks and investment banks.
 
SMBS  are usually structured with two classes that receive different proportions
of the interest and  principal distributions from a  pool of mortgage assets.  A
common  type of SMBS will have one class receiving some of the interest and most
of the principal from the
 
                                       3
<PAGE>
Mortgage Assets, while the other class will receive most of the interest and the
remainder of the principal. In the most extreme case, one class will receive all
of the interest  (the interest-only or  "IO" class) while  the other class  will
receive  all of the principal  (the principal-only or "PO"  class). The yield to
maturity on an  IO is  extremely sensitive to  the rate  of principal  payments,
including  prepayments on  the related underlying  Mortgage Assets,  and a rapid
rate of principal payments may have a material adverse effect on such security's
yield to maturity.  If the  underlying Mortgage Assets  experience greater  than
anticipated  prepayments of  principal, a  Series may  fail to  fully recoup its
initial investment in these securities. The market value of the class consisting
primarily or entirely of principal  payments generally is unusually volatile  in
response  to  changes  in  interest  rates.  Because  SMBS  were  only  recently
introduced, established  trading  markets  for these  securities  have  not  yet
developed,  although the securities are traded among institutional investors and
investment banking firms.
 
   
LOAN PARTICIPATIONS AND OTHER DIRECT  INDEBTEDNESS: Each of the Emerging  Growth
Series,  the Value Series,  the Total Return Series,  the Strategic Fixed Income
Series and the  High Income Series  may purchase loan  participations and  other
direct  indebtedness. In purchasing a loan participation, a Series acquires some
or all of the  interest of a bank  or other lending institution  in a loan to  a
corporate borrower. Many such loans are secured, although some may be unsecured.
Such  loans may be  in default at the  time of purchase.  Loans and other direct
indebtedness that  are fully  secured offer  a Series  more protection  than  an
unsecured  loan in the event of  non-payment of scheduled interest or principal.
However, there is no assurance that the liquidation of collateral from a secured
loan or  other  direct  indebtedness  would  satisfy  the  corporate  borrower's
obligation, or that the collateral can be liquidated.
    
 
These loans and other direct indebtedness are made generally to finance internal
growth,  mergers, acquisitions, stock repurchases,  leveraged buy-outs and other
corporate activities.  Such  loans  and  other  direct  indebtedness  loans  are
typically  made by a syndicate of  lending institutions, represented by an agent
lending institution  which  has  negotiated  and  structured  the  loan  and  is
responsible  for collecting interest, principal and other amounts due on its own
behalf and on behalf of the others  in the syndicate, and for enforcing its  and
their  other rights  against the borrower.  Alternatively, such  loans and other
direct indebtedness may be structured as a novation, pursuant to which a  Series
would  assume all of  the rights of the  lending institution in a  loan or as an
assignment, pursuant  to which  the Series  would purchase  an assignment  of  a
portion  of a lender's  interest in a  loan or other  direct indebtedness either
directly from the lender or through an intermediary. A Series may also  purchase
trade  or other claims against companies,  which generally represent money owned
by the company  to a supplier  of goods or  services. These claims  may also  be
purchased at a time when the company is in default.
 
Certain of the loan participations and the other direct indebtedness acquired by
a  Series may  involve revolving  credit facilities  or other  standby financing
commitments which obligate the Series to  pay additional cash on a certain  date
or  on demand. These  commitments may have  the effect of  requiring a Series to
increase its  investment in  a  company at  a time  when  the Series  might  not
otherwise  decide to  do so  (including at a  time when  the company's financial
condition makes it  unlikely that such  amounts will be  repaid). To the  extent
that  a Series is  committed to advance  additional funds, it  will at all times
hold and  maintain  in  a segregated  account  cash  or other  high  grade  debt
obligations in an amount sufficient to meet such commitments.
 
A  Series' ability to  receive payment of principal,  interest and other amounts
due in connection with these investments will depend primarily on the  financial
condition of the borrower. In selecting the loan participations and other direct
indebtedness  which a Series will  purchase, the Adviser will  rely upon its own
(and not the original lending institution's) credit analysis of the borrower. As
the Series may be required to  rely upon another lending institution to  collect
and pass onto the Series amounts payable with respect to the loan and to enforce
the  Series' rights under the loan and other direct indebtedness, an insolvency,
bankruptcy or reorganization of the lending institution may delay or prevent the
Series from receiving such amounts. In  such cases, the Series will evaluate  as
well  the creditworthiness  of the lending  institution and will  treat both the
borrower and the lending  institution as an "issuer"  of the loan  participation
for   purposes   of   certain   investment   restrictions   pertaining   to  the
diversification of  the  Series'  portfolio investments.  The  highly  leveraged
nature  of many such loans and other direct indebtedness may make such loans and
other direct indebtedness especially vulnerable  to adverse changes in  economic
or  market conditions. Investments  in such loans  and other direct indebtedness
may involve additional risk to a Series. For example, if a loan or other  direct
indebtedness  is foreclosed, a Series could become part owner of any collateral,
and would bear the costs and liabilities associated with owning and disposing of
the collateral.  In  addition,  it  is conceivable  that  under  emerging  legal
theories  of lender liability, a Series could  be held liable as a co-lender. It
is unclear whether loans and other forms of direct indebtedness offer securities
law  protections  against  fraud  and  misrepresentation.  In  the  absence   of
definitive  regulatory guidance, each Series relies on the Adviser's research in
an attempt to avoid situations where fraud and misrepresentation could adversely
affect a Series. In addition,  loan participations and other direct  investments
may  not be  in the  form of  securities or  may be  subject to  restrictions on
transfer, and only limited opportunities  may exist to resell such  instruments.
As  a result, a  Series may be unable  to sell such  investments at an opportune
time or may have to  resell them at less than  fair market value. To the  extent
that  the Adviser  determines that any  such investments are  illiquid, a Series
will include them in the investment limitations described below.
 
MORTGAGE PASS-THROUGH  SECURITIES: Each  of the  Total Return  Series, the  Bond
Series,  the World Governments Series, the  Limited Maturity Series and the High
Income Series  may invest  in mortgage  pass-through securities.  The  Utilities
Series may invest in mortgage pass-through securities that are securities issued
or guaranteed as to principal and interest by the U.S. Government, its agencies,
authorities   or   instrumentalities.  Mortgage   pass-through   securities  are
securities representing interests in "pools" of mortgage loans. Monthly payments
of interest and principal  by the individual borrowers  on mortgages are  passed
through  to the  holders of the  securities (net of  fees paid to  the issuer or
guarantor of the securities) as the  mortgages in the underlying mortgage  pools
are    paid    off.    The    average    lives    of    mortgage   pass-throughs
 
                                       4
<PAGE>
are variable when issued because their average lives depend on prepayment rates.
The average life of these securities is likely to be substantially shorter  than
their  stated final  maturity as a  result of  unscheduled principal prepayment.
Prepayments on underlying mortgages  result in a  loss of anticipated  interest,
and  all or part  of a premium  if any has  been paid, and  the actual yield (or
total return)  to  the Fund  may  be different  than  the quoted  yield  on  the
securities. Mortgage premiums generally increase with falling interest rates and
decrease  with rising interest  rates. Like other  fixed income securities, when
interest rates rise the value  of mortgage pass-through security generally  will
decline;  however,  when interest  rates are  declining,  the value  of mortgage
pass-through securities with  prepayment features  may not increase  as much  as
that of other fixed-income securities.
 
Payment  of principal and interest on some mortgage pass-through securities (but
not the market value of the securities themselves) may be guaranteed by the full
faith and credit of the U.S. Government (in the case of securities guaranteed by
the Government National Mortgage Association ("GNMA"); or guaranteed by agencies
or instrumentalities  of  the U.S.  Government  (such as  the  Federal  National
Mortgage  Association ("FNMA")  or the  Federal Home  Loan Mortgage Corporation,
("FHLMC") which are supported  only by the discretionary  authority of the  U.S.
Government   to  purchase  the   agency's  obligations).  Mortgage  pass-through
securities may also be  issued by non-governmental  issuers (such as  commercial
banks,  savings  and loan  institutions,  private mortgage  insurance companies,
mortgage bankers and  other secondary  market issuers). Some  of these  mortgage
pass-through  securities  may  be supported  by  various forms  of  insurance or
guarantees.
 
Interests in pools  of mortgage-related  securities differ from  other forms  of
debt  securities, which  normally provide  for periodic  payment of  interest in
fixed amounts  with principal  payments  at maturity  or specified  call  dates.
Instead,  these  securities provide  a monthly  payment  which consists  of both
interest and principal payments. In effect, these payments are a  "pass-through"
of  the  monthly payments  made by  the individual  borrowers on  their mortgage
loans, net of  any fees  paid to  the issuer  or guarantor  of such  securities.
Additional  payments are caused  by prepayments of  principal resulting from the
sale, refinancing or  foreclosure of  the underlying  property, net  of fees  or
costs  which may  be incurred.  Some mortgage  pass-through securities  (such as
securities issued by the GNMA)  are described as "modified pass-through."  These
securities  entitle the holder  to receive all  interests and principal payments
owed on  the  mortgages in  the  mortgage pool,  net  of certain  fees,  at  the
scheduled  payment dates regardless of whether  the mortgagor actually makes the
payment.
 
The principal  governmental guarantor  of  mortgage pass-through  securities  is
GNMA.  GNMA is a wholly owned  U.S. Government corporation within the Department
of Housing and Urban Development. GNMA is authorized to guarantee, with the full
faith and credit  of the U.S.  Government, the timely  payment 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. These guarantees, however, do
not apply to the market value or yield of mortgage pass-through securities. GNMA
securities are  often purchased  at a  premium over  the maturity  value of  the
underlying  mortgages.  This  premium is  not  guaranteed  and will  be  lost if
prepayment occurs.
 
Government-related guarantors (I.E., whose guarantees are not backed by the full
faith and credit  of the  U.S. Government)  include FNMA  and FHLMC.  FNMA is  a
government-sponsored  corporation owned entirely by  private stockholders. It is
subject to general regulation by the Secretary of Housing and Urban Development.
FNMA purchases conventional residential  mortgages (I.E., mortgages not  insured
or   guaranteed  by   any  governmental   agency)  from   a  list   of  approved
seller/servicers which include  state and federally  chartered savings and  loan
associations, mutual savings banks, commercial banks, credit unions and mortgage
bankers.  Pass-through securities  issued by  FNMA are  guaranteed as  to timely
payment by FNMA of principal and interest.
 
FHLMC is also a government-sponsored corporation owned by private  stockholders.
FHLMC  issues Participation  Certificates ("PCs")  which represent  interests in
conventional mortgages (I.E., not federally  insured or guaranteed) for  FHLMC's
national  portfolio. FHLMC  guarantees timely  payment of  interest and ultimate
collection of  principal regardless  of the  status of  the underlying  mortgage
loans.
 
Commercial  banks,  savings and  loan  institutions, private  mortgage insurance
companies, mortgage  bankers  and other  secondary  market issuers  also  create
pass-through  pools of mortgage loans. Such  issuers may also be the originators
and/or servicers of the underlying mortgage-related securities. Pools created by
such non-governmental issuers  generally offer  a higher rate  of interest  than
government  and government-related pools because there are no direct or indirect
government or agency guarantees of payments in the former pools. However, timely
payment of  interest and  principal of  mortgage  loans in  these pools  may  be
supported  by  various forms  of insurance  or guarantees,  including individual
loan, title, pool and hazard insurance and letters of credit. The insurance  and
guarantees  are  issued  by  governmental  entities,  private  insurers  and the
mortgage poolers.  There  can be  no  assurance  that the  private  insurers  or
guarantors  can meet their obligations under the insurance policies or guarantee
arrangements.  A  Series  may  also  buy  mortgage-related  securities   without
insurance or guarantees.
 
   
INDEXED  SECURITIES: Each of the Value Series, the Total Return Series, the High
Income Series, the Bond Series, the  Utilities Series and the World  Governments
Series  may purchase securities whose prices are  indexed to the prices of other
securities,  securities   indices,   currencies,  precious   metals   or   other
commodities,  or other  financial indicators. Indexed  securities typically, but
not always,  are debt  securities or  deposits whose  value at  maturity  (i.e.,
principal  value)  or  coupon rate  is  determined  by reference  to  a specific
instrument or statistic. Gold-indexed securities, for example, typically provide
for a maturity value that depends on the price of gold, resulting in a  security
whose  price tends to rise and  fall together with gold prices. Currency-indexed
securities typically are short-term  to intermediate-term debt securities  whose
maturity  values or interest rates are determined  by reference to the values of
one or more specified foreign currencies, and may offer higher yields than  U.S.
dollar-denominated securities of equivalent issuers. Currency-indexed securities
may be positively or negatively indexed; that is,
    
 
                                       5
<PAGE>
their  maturity value may increase when  the specified currency value increases,
resulting in  a  security  that  performs  similarly  to  a  foreign-denominated
instrument,  or  their  maturity  value  may  decline  when  foreign  currencies
increase, resulting in a security whose  price characteristics are similar to  a
put on the underlying currency. Currency-indexed securities may also have prices
that  depend on the values of a  number of different foreign currencies relative
to each other.
 
The performance  of  indexed  securities  depends  to  a  great  extent  on  the
performance  of the  security, currency, or  other instrument to  which they are
indexed, and may also  be influenced by  interest rate changes  in the U.S.  and
abroad.  At the same  time, indexed securities  are subject to  the credit risks
associated with  the  issuer of  the  security,  and their  values  may  decline
substantially  if the issuer's creditworthiness  deteriorates. Recent issuers of
indexed  securities  have  included   banks,  corporations,  and  certain   U.S.
government agencies.
 
SWAPS  AND  RELATED TRANSACTIONS:  Each  of the  High  Income Series,  the World
Governments Series, the Strategic Fixed Income  Series, the Bond Series and  the
Limited  Maturity Series may enter into  interest rate swaps, currency swaps and
other types of available swap agreements, such as caps, collars and floors.
 
Swap agreements  may  be  individually  negotiated  and  structured  to  include
exposure  to  a variety  of different  types of  investments or  market factors.
Depending on their structure, swap agreements may increase or decrease a Series'
exposure to long or short-term interest  rates (in the U.S. or abroad),  foreign
currency  values,  mortgage  securities,  corporate  borrowing  rates,  or other
factors such as securities prices or  inflation rates. Swap agreements can  take
many  different forms  and are  known by  a variety  of names.  A Series  is not
limited to any particular form or variety of swap agreement if MFS determines it
is consistent with the Series' investment objective and policies.
 
Each of the  High Income  Series, the  World Governments  Series, the  Strategic
Fixed  Income  Series, the  Bond  Series and  the  Limited Maturity  Series will
maintain cash  or appropriate  liquid assets  with its  custodian to  cover  its
current  obligations under  swap transactions.  If a  Series enters  into a swap
agreement on a net basis (I.E., the two payment streams are netted out, with the
Series receiving or paying, as the case may  be, only the net amount of the  two
payments),  the Series  will maintain cash  or liquid assets  with its Custodian
with a daily value at least equal to the excess, if any, of the Series'  accrued
obligations  under  the swap  agreement over  the accrued  amount the  Series is
entitled to  receive  under  the agreement.  If  a  Series enters  into  a  swap
agreement on other than a net basis, it will maintain cash or liquid assets with
a  value equal to the  full amount of the  Series' accrued obligations under the
agreement.
 
The most  significant factor  in  the performance  of  swaps, caps,  floors  and
collars  is the change in  the specific interest rate,  currency or other factor
that determines the amount of payments to be made under the arrangement. If  the
Adviser   is  incorrect  in  its  forecasts  of  such  factors,  the  investment
performance of a  Series would be  less than what  it would have  been if  these
investment  techniques had not been used. If a swap agreement calls for payments
by a Series,  the Series must  be prepared to  make such payments  when due.  In
addition, if the counterparty's creditworthiness declined, the value of the swap
agreement would be likely to decline, potentially resulting in losses.
 
If  the counterparty defaults, a Series' risk of loss consists of the net amount
of payments that the  Series is contractually entitled  to receive. Each  Series
anticipates that it will be able to eliminate or reduce its exposure under these
arrangements  by  assignment  or  other  disposition  or  by  entering  into  an
offsetting agreement with the same or another counterparty.
 
   
OPTIONS ON SECURITIES: Each of the Emerging Growth Series, the Value Series, the
Total Return Series,  the Bond Series,  the Strategic Fixed  Income Series,  the
World  Governments Series,  the Growth  With Income  Series and  the High Income
Series may write (sell) covered put and call options, and purchase put and  call
options,  on securities. Call and put options written by a Series may be covered
in the manner set forth below.
    
 
A call option written by a Series  is "covered" if the Series owns the  security
underlying  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 a 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, short-term money  market instruments or  high quality debt
securities in a segregated account with its custodian. A put option written by a
Series is  "covered"  if the  Series  maintains cash,  short-term  money  market
instruments  or high-quality debt 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 or  where the exercise price  of the put held  is less than  the
exercise  price of the put written if the difference is maintained by the Series
in cash, short-term money market instruments or high-quality debt securities  in
a  segregated account  with its  custodian. Put  and call  options written  by a
Series may also be covered in such other manner as may be in accordance with the
requirements of  the exchange  on which,  or the  counterparty with  which,  the
option  is  traded,  and  applicable  laws  and  regulations.  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.
 
Effecting a closing transaction in the case of a written call option will permit
a Series to write another call option  on the underlying security with either  a
different exercise price or expiration date or both, or in the case of a written
put option will permit the Series to write another put option to the extent that
the exercise price thereof is secured by deposited cash, short-term money market
instruments  or high-quality debt securities.  Such transactions permit a Series
to generate additional premium income,  which will partially offset declines  in
the  value of portfolio securities or increases  in the cost of securities to be
acquired. Also, effecting a closing transaction will permit the cash or proceeds
from the concurrent sale of
 
                                       6
<PAGE>
any securities subject  to the  option to  be used  for other  investments of  a
Series,  provided that  another option  on such  security is  not written.  If a
Series desires to sell a particular security from its portfolio on which it  has
written  a call option, it will effect  a closing transaction in connection with
the option prior to or concurrent with the sale of the security.
 
A Series will realize a profit from a closing transaction if the premium paid in
connection with the closing of an option written by the Series is less than  the
premium  received  from  writing  the  option, or  if  the  premium  received in
connection with the closing of an option purchased by a Series is more than  the
premium  paid for the original purchase. Conversely, a Series will suffer a loss
if the premium paid or received in connection with a closing transaction is more
or less, respectively,  than the premium  received or paid  in establishing  the
option  position. Because increases  in the market  price of a  call option will
generally reflect increases in the market price of the underlying security,  any
loss  resulting from  the repurchase  of a call  option previously  written by a
Series is  likely to  be offset  in  whole or  in part  by appreciation  of  the
underlying security owned by the Series.
 
The Series may write options in connection with buy-and-write transactions; that
is,  a Series may purchase a security and  then write a call option against that
security. The  exercise price  of the  call a  Series determines  to write  will
depend upon the expected price movement of the underlying security. The exercise
price  of a call option may be below ("in-the-money"), equal to ("at-the-money")
or above ("out-of-the-money") the  current value of  the underlying security  at
the  time the option  is written. Buy-and-write  transactions using in-the-money
call options may be used  when it is expected that  the price of the  underlying
security  will  decline  moderately  during  the  option  period.  Buy-and-write
transactions using out-of-the-money call options may be used when it is expected
that the premiums received from writing the call option plus the appreciation in
the market price of  the underlying security  up to the  exercise price will  be
greater  than the appreciation in the price of the underlying security alone. If
the call options are exercised in such transactions, a Series' maximum gain will
be the  premium received  by it  for  writing the  option, adjusted  upwards  or
downwards  by the difference between the  Series' purchase price of the security
and the exercise price, less related  transaction costs. If the options are  not
exercised  and the price of the underlying security declines, the amount of such
decline will be offset in part, or entirely, by the premium received.
 
The  writing  of  covered  put  options  is  similar  in  terms  of  risk/return
characteristics  to  buy-and-write  transactions.  If the  market  price  of the
underlying security rises  or otherwise  is above  the exercise  price, the  put
option  will expire worthless and a Series'  gain will be limited to the premium
received, less related transaction costs. If the market price of the  underlying
security  declines or otherwise is below the  exercise price, a Series may elect
to close the position or retain the option until it is exercised, at which  time
the  Series will be  required to take  delivery of the  security at the exercise
price; a Series' return will be the  premium received from the put option  minus
the  amount by  which the  market price  of the  security is  below the exercise
price,  which  could  result  in  a  loss.  Out-of-the-money,  at-the-money  and
in-the-money put options may be used by a Series in the same market environments
that call options are used in equivalent buy-and-write transactions.
 
A  Series  may also  write  combinations of  put and  call  options on  the same
security, known  as "straddles,"  with the  same exercise  price and  expiration
date.  By writing a  straddle, a Series undertakes  a simultaneous obligation to
sell and purchase  the same security  in the event  that one of  the options  is
exercised.  If the price  of the security  subsequently rises sufficiently above
the exercise price to cover the amount of the premium and transaction costs, the
call will  likely be  exercised and  the Series  will be  required to  sell  the
underlying  security at a below market price.  This loss may be offset, however,
in whole or part, by  the premiums received on the  writing of the two  options.
Conversely,  if the price of  the security declines by  a sufficient amount, the
put will likely be exercised. The writing of straddles will likely be effective,
therefore, only where the price of  the security remains stable and neither  the
call  nor the put is  exercised. In those instances where  one of the options is
exercised, the  loss on  the purchase  or sale  of the  underlying security  may
exceed the amount of the premiums received.
 
By  writing a call  option, a Series  limits its opportunity  to profit from any
increase in the market value of the underlying security above the exercise price
of the option. By writing a put option, a Series assumes the risk that it may be
required to purchase  the underlying security  for an exercise  price above  its
then  current  market value,  resulting in  a capital  loss unless  the security
subsequently appreciates in value. The writing of options on securities will not
be undertaken by a Series solely for hedging purposes, and could involve certain
risks which are not present in the case of hedging transactions. Moreover,  even
where  options are  written for  hedging purposes,  such transactions constitute
only a partial hedge  against declines in the  value of portfolio securities  or
against increases in the value of securities to be acquired, up to the amount of
the premium.
 
A  Series may purchase options  for hedging purposes or  to increase its return.
Put options  may  be purchased  to  hedge against  a  decline in  the  value  of
portfolio  securities. If  such decline  occurs, the  put options  will permit a
Series to sell the securities at the exercise price, or to close out the options
at a profit. By using put options in  this way, a Series will reduce any  profit
it might otherwise have realized in the underlying security by the amount of the
premium paid for the put option and by transaction costs.
 
A  Series may purchase call options to hedge against an increase in the price of
securities that  the  Series  anticipates  purchasing in  the  future.  If  such
increase  occurs,  the  call  option  will permit  the  Series  to  purchase the
securities at the exercise price, or to  close out the options at a profit.  The
premium  paid for  the call  option plus any  transaction costs  will reduce the
benefit, if any, realized by a Series  upon exercise of the option, and,  unless
the  price of the underlying security  rises sufficiently, the option may expire
worthless to the Series.
 
In certain instances, the Emerging Growth Series and the Strategic Fixed  Income
Series  may enter  into options  on U.S.  Treasury securities  which provide for
periodic adjustment of the  strike price and may  also provide for the  periodic
adjustment  of the premium during the term of each such option. Like other types
of options, these
 
                                       7
<PAGE>
transactions, which may be referred to as "reset" options or "adjustable strike"
options, grant the purchaser the right to purchase (in the case of a "call")  or
sell  (in the  case of a  "put"), a specified  type and series  of U.S. Treasury
security at any time up to a  stated expiration date (or, in certain  instances,
on  such date).  In contrast to  other types  of options, however,  the price at
which the underlying security may be purchased or sold under a "reset" option is
determined at various intervals  during the term of  the option, and such  price
fluctuates from interval to interval based on changes in the market value of the
underlying  security. As a result, the strike  price of a "reset" option, at the
time of exercise,  may be less  advantageous to  the Series than  if the  strike
price  had been fixed at the initiation  of the option. In addition, the premium
paid for the purchase of the option may be determined at the termination, rather
than the initiation, of the option. If  the premium is paid at termination,  the
Series  assumes the risk that (i) the premium may be less than the premium which
would otherwise have been  received at the initiation  of the option because  of
such factors as the volatility in yield of the underlying Treasury security over
the  term of the option and adjustments made  to the strike price of the option,
and (ii) the option purchaser may default  on its obligation to pay the  premium
at the termination of the option.
 
   
OPTIONS  ON STOCK INDICES: Each of the Emerging Growth Series, the Value Series,
the Total Return Series, the Growth With Income Series and the Utilities  Series
may  write (sell) covered call and put options and purchase call and put options
on stock indices. In contrast to an option  on a security, an option on a  stock
index  provides the  holder with  the right  but not  the obligation  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 (i) 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 (ii)  a fixed  "index
multiplier."
    
 
A  Series may  cover call  options on stock  indices by  owning securities whose
price changes, in  the opinion of  the Adviser,  are expected to  be similar  to
those  of the underlying index, or by  having an absolute and immediate right to
acquire such securities without additional cash consideration (or for additional
cash  consideration  held  in  a  segregated  account  by  its  custodian)  upon
conversion  or exchange  of other  securities in  its portfolio.  Where a Series
covers a call  option on  a stock index  through ownership  of securities,  such
securities  may not match the  composition of the index  and, 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. A Series may also cover call
options  on stock indices  by holding a call  on the same index  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,  short-term  money  market  instruments or
high-quality debt  securities in  a  segregated account  with its  custodian.  A
Series  may cover put  options on stock indices  by maintaining cash, short-term
money market instruments or high-quality debt  securities with a value equal  to
the  exercise price in a segregated account  with its custodian, or by holding a
put on the same stock index 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 or where the exercise price of the put held is
less than the exercise price of the put written if the difference is  maintained
by  the Series in cash, short-term money market instruments or high-quality debt
securities in a segregated account with  its custodian. Put and call options  on
stock  indices may also be covered in such  other manner as may be in accordance
with the rules of  the exchange on  which, or the  counterparty with which,  the
option is traded and applicable laws and regulations.
 
A  Series  will receive  a  premium from  writing a  put  or call  option, which
increases the Series' gross income in  the event the option expires  unexercised
or  is closed out at  a profit. If the  value of an index  on which a Series has
written a call  option falls  or remains  the same,  the Series  will realize  a
profit  in the form of the premium  received (less transaction costs) that could
offset all or a portion of any decline  in the value of the securities it  owns.
If  the value of the index  rises, however, a Series will  realize a loss in its
call  option  position,  which  will  reduce  the  benefit  of  any   unrealized
appreciation in the Series' stock investments. By writing a put option, a Series
assumes the risk of a decline in the index. To the extent that the price changes
of  securities owned  by a  Series correlate  with changes  in the  value of the
index, writing covered put options on indices will increase a Series' losses  in
the  event of a market  decline, although such losses will  be offset in part by
the premium received for writing the option.
 
A Series may also purchase put options on stock indices to hedge its investments
against a decline  in value.  By purchasing  a put option  on a  stock index,  a
Series  will seek to offset a decline in the value of securities it owns through
appreciation of the put option. If the  value of a Series' investments does  not
decline  as anticipated, or  if the value  of the option  does not increase, the
Series' loss will be  limited to the  premium paid for  the option plus  related
transaction  costs.  The success  of this  strategy will  largely depend  on the
accuracy of the correlation between  the changes in value  of the index and  the
changes in value of the Series' security holdings.
 
The purchase of call options on stock indices may be used by a Series to attempt
to  reduce the  risk of  missing a  broad market  advance, or  an advance  in an
industry or market segment, at a time  when the Series holds uninvested cash  or
short-term debt securities awaiting investment. When purchasing call options for
this purpose, a Series will also bear the risk of losing all or a portion of the
premium  paid if  the value  of the index  does not  rise. The  purchase of call
options on stock indices when a Series is substantially fully invested is a form
of leverage, up to the amount of the premium and related transaction costs,  and
involves  risks of loss and of increased volatility similar to those involved in
purchasing calls on securities the Fund owns.
 
                                       8
<PAGE>
The  index underlying a stock index option 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  on narrower  market indices,  such as  the Standard  & Poor's  100
Index,  or on indices 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. The composition of the index is changed
periodically.
 
   
YIELD CURVE OPTIONS: Each of the Value Series, the Total Return Series, the Bond
Series,  the Strategic Fixed Income Series, the World Governments Series and the
High Income  Series  may also  enter  into options  on  the "spread,"  or  yield
differential,  between two fixed income  securities, in transactions referred to
as "yield curve" options. In contrast to  other types of options, a yield  curve
option  is based on the difference  between the yields of designated securities,
rather than the prices of the individual securities, and is settled through cash
payments. Accordingly, a yield curve option is profitable to the holder if  this
differential  widens (in the case of a call)  or narrows (in the case of a put),
regardless of  whether  the yields  of  the underlying  securities  increase  or
decrease.
    
 
Yield  curve  options may  be used  for the  same purposes  as other  options on
securities. Specially, a Series may purchase  or write such options for  hedging
purposes.  For example, a Series may purchase  a call option on the yield spread
between two  securities,  if it  owns  one  of the  securities  and  anticipates
purchasing  the other security and  wants to hedge against  an adverse change in
the yield spread between the two securities. A Series may also purchase or write
yield curve  options for  other than  hedging purposes  (I.E., in  an effort  to
increase its current income) if, in the judgment of the Adviser, the Series will
be  able  to profit  from  movements in  the spread  between  the yields  of the
underlying securities. The trading of yield  curve options is subject to all  of
the  risks associated with the  trading of other types  of options. In addition,
however, such options  present risk  of loss  even if the  yield of  one of  the
underlying securities remains constant, if the spread moves in a direction or to
an  extent which was  not anticipated. Yield  curve options written  by a Series
will be "covered". A call (or put) option is covered if the Series holds another
call (or put) option on the spread between the same two securities and maintains
in a segregated account with its  custodian cash or cash equivalents  sufficient
to  cover the Series' net liability under  the two options. Therefore, a Series'
liability for  such a  covered option  is generally  limited to  the  difference
between  the amount  of the  Series' liability under  the option  written by the
Series less the value of the option held by the Series. Yield curve options  may
also  be  covered  in  such  other  manner as  may  be  in  accordance  with the
requirements of the counterparty with which the option is traded and  applicable
laws  and  regulations.  Yield  curve options  are  traded  over-the-counter and
because they have been only recently introduced, established trading markets for
these  securities  have  not  yet   developed.  Because  these  securities   are
over-the-counter,  the SEC has  taken the position that  yield curve options are
illiquid and, therefore, cannot exceed the SEC illiquidity ceiling.
 
The staff of  the SEC  has taken  the position  that purchased  over-the-counter
options  and assets used to cover  written over-the-counter options are illiquid
and, therefore, together with other illiquid securities, cannot exceed a certain
percentage of a  Series' assets  (the "SEC illiquidity  ceiling"). Although  the
Adviser  disagrees with this position, the Adviser intends to limit each Series'
writing of over-the-counter options in accordance with the following  procedure.
Except  as provided  below, a Series  intends to  write over-the-counter options
only with primary U.S. Government  securities dealers recognized by the  Federal
Reserve  Bank of New York. Also, the contracts  which a Series has in place with
such primary dealers  will provide  that the Series  has the  absolute right  to
repurchase  an option it writes at any time at a price which represents the fair
market value,  as  determined in  good  faith through  negotiation  between  the
parties,  but which  in no event  will exceed  a price determined  pursuant to a
formula in  the  contract.  Although  the  specific  formula  may  vary  between
contracts with different primary dealers, the formula will generally be based on
a  multiple of the premium received by a Series for writing the option, plus the
amount, if  any, of  the option's  intrinsic value  (I.E., the  amount that  the
option  is in-the-money). The formula  may also include a  factor to account for
the difference between the  price of the  security and the  strike price of  the
option  if the option is written out-of-money. A Series will treat all or a part
of the formula price as illiquid for purposes of the SEC illiquidity ceiling.  A
Series  may  also  write  over-the-counter  options  with  non-primary  dealers,
including foreign dealers, and will treat the assets used to cover these options
as illiquid for purposes of such SEC illiquidity ceiling.
 
   
FUTURES CONTRACTS:  Each  of the  Total  Return  Series, the  Bond  Series,  the
Strategic  Fixed  Income  Series,  the  World  Governments  Series,  the Limited
Maturity Series, the High  Income Series and the  Utilities Series may  purchase
and  sell futures contracts  ("Futures Contracts") on  foreign or domestic fixed
income securities or  indices of such  securities. Each of  the Emerging  Growth
Series,  the Value Series,  the Total Return  Series and the  Growth With Income
Series may  purchase and  sell Futures  Contracts on  stock indexes,  while  the
Emerging  Growth Series,  the Value Series,  the Total Return  Series, the World
Governments Series, the Growth  With Income Series,  the Strategic Fixed  Income
Series  and  the Utilities  Series may  purchase and  sell Futures  Contracts on
foreign currencies or indices of foreign currencies. Such investment  strategies
will  be  used for  hedging purposes  and for  non-hedging purposes,  subject to
applicable law.
    
 
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
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 seller in cash. Futures Contracts differ from options in  that
they   are  bilateral  agreements,  with  both  the  purchaser  and  the  seller
 
                                       9
<PAGE>
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 Contract more or less valuable - a process known as "mark-to-market."
 
Purchases or  sales of  stock index  futures contracts  are used  to attempt  to
protect  a Series' current or intended stock investments from broad fluctuations
in stock prices. For example, a Series may sell stock index futures contracts in
anticipation of or during a market decline to attempt to offset the decrease  in
market value of the Series' securities portfolio that might otherwise result. If
such decline occurs, the loss in value of portfolio securities may be offset, in
whole  or part,  by gains on  the futures position.  When a Series  is not fully
invested in the securities market and anticipates a significant market  advance,
it  may purchase  stock index  futures contracts in  order to  gain rapid market
exposure that  may,  in  part or  entirely,  offset  increases in  the  cost  of
securities  that the Series intends to purchase. As such purchases are made, the
corresponding positions in stock index futures contracts will be closed out.  In
a  substantial majority  of these  transactions, the  Series will  purchase such
securities upon termination of  the futures position,  but under unusual  market
conditions, a long futures position may be terminated without a related purchase
of securities.
 
Interest  rate Futures Contracts may be purchased  or sold to attempt to protect
against the effects of  interest rate changes on  a Series' current or  intended
investments in fixed income securities. For example, if a Series owned long-term
bonds and interest rates were expected to increase, that Series might enter into
interest  rate futures contracts  for the sale  of debt securities.  Such a sale
would have much the same effect as  selling some of the long-term bonds in  that
Series'  portfolio.  If  interest rates  did  increase,  the value  of  the debt
securities in  the  portfolio would  decline,  but  the value  of  that  Series'
interest  rate futures contracts would increase  at approximately the same rate,
thereby keeping the net asset value of that Series from declining as much as  it
otherwise would have.
 
Similarly,  if interest  rates were expected  to decline,  interest rate futures
contracts may be purchased to hedge  in anticipation of subsequent purchases  of
long-term  bonds at higher  prices. Since the  fluctuations in the  value of the
interest rate futures contracts should be similar to that of long-term bonds,  a
Series  could protect itself against the effects  of the anticipated rise in the
value of long-term bonds without actually  buying them until the necessary  cash
became  available or the market had stabilized.  At that time, the interest rate
futures contracts could be liquidated and that Series' cash reserves could  then
be  used to buy  long-term bonds on  the cash market.  A Series could accomplish
similar results by  selling bonds with  long maturities and  investing in  bonds
with  short maturities  when interest rates  are expected  to increase. However,
since the  futures market  is  more liquid  than the  cash  market, the  use  of
interest  rate futures contracts as a hedging technique allows a Series to hedge
its interest rate risk without having to sell its portfolio securities.
 
As noted in  the Prospectus,  a Series may  purchase and  sell foreign  currency
futures  contracts for  hedging purposes, to  attempt to protect  its current or
intended  investments  from  fluctuations  in  currency  exchange  rates.   Such
fluctuations  could reduce the dollar  value of portfolio securities denominated
in foreign currencies, or increase the cost of foreign-denominated securities to
be acquired, even if  the value of  such securities in  the currencies in  which
they  are denominated remains constant. A Series may sell futures contracts on a
foreign currency, for  example, where  it holds securities  denominated in  such
currency  and it anticipates a decline in the value of such currency relative to
the dollar. In the  event such decline occurs,  the resulting adverse effect  on
the  value of foreign-denominated securities may be offset, in whole or in part,
by gains on the futures contracts.
 
Conversely, a  Series  could  protect against  a  rise  in the  dollar  cost  of
foreign-denominated securities to be acquired by purchasing futures contracts on
the  relevant currency, which could  offset, in whole or  in part, the increased
cost of  such securities  resulting  from a  rise in  the  dollar value  of  the
underlying  currencies. Where  a Series  purchases futures  contracts under such
circumstances, however,  and the  prices of  securities to  be acquired  instead
decline,  the Series  will sustain  losses on  its futures  position which could
reduce or eliminate the benefits of the reduced cost of portfolio securities  to
be acquired.
 
OPTIONS ON FUTURES CONTRACTS: Each Series that may buy or sell Futures Contracts
(see  "Futures Contracts" above) also  may purchase and write  options to buy or
sell those  Futures  Contracts in  which  it  may invest  ("Options  on  Futures
Contracts").  Such investment strategies  will be used  for hedging purposes and
for non-hedging purposes, subject to applicable law.
 
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  clearinghouse  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 initial and 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  seller  prior  to  expiration  by  effecting  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.
 
                                       10
<PAGE>
Options on Futures Contracts that are written  or purchased by a Series on  U.S.
exchanges  are  traded on  the same  contract market  as the  underlying Futures
Contract, and,  like  Futures  Contracts,  are  subject  to  regulation  by  the
Commodities   Futures  Trading  Commission  (the  "CFTC")  and  the  performance
guarantee of  the  exchange  clearinghouse.  In  addition,  Options  on  Futures
Contracts may be traded on foreign exchanges.
 
A  Series may cover the writing of call Options on Futures Contracts (a) through
purchases of  the underlying  Futures  Contract, (b)  through ownership  of  the
instrument,  or  instruments  included  in  the  index,  underlying  the Futures
Contract, or (c) through the holding of a call on the same Futures Contract  and
in the same principal amount as the call written where the exercise price of the
call held (i) is equal to or less than the exercise price of the call written or
(ii) is greater than the exercise price of the call written if the difference is
maintained  by the Series in cash or securities in a segregated account with its
custodian. A Series may  cover the writing of  put Options on Futures  Contracts
(a) through sales of the underlying Futures Contract, (b) through segregation of
cash,  short-term money market instruments or high quality debt securities in an
amount equal  to the  value of  the  security or  index underlying  the  Futures
Contract,  or (c) through the holding of a  put on the same Futures Contract 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 or
where the exercise price of the put held is less than the exercise price of  the
put  written if the difference  is maintained by the  Series in cash, short-term
money market instruments or high quality debt securities in a segregated account
with its  custodian. Put  and call  Options  on Futures  Contracts may  also  be
covered  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. Upon
the exercise of a  call Option on  a Futures Contract written  by a Series,  the
Series  will be required to  sell the underlying Futures  Contract which, if the
Series has covered its  obligation through the purchase  of such Contract,  will
serve  to liquidate  its futures  position. Similarly, where  a put  Option on a
Futures Contract written by a Series  is exercised, the Series will be  required
to purchase the underlying Futures Contract which, if the Series has covered its
obligation  through  the  sale of  such  Contract,  will close  out  its futures
position.
 
The writing  of  a  call option  on  a  Futures Contract  for  hedging  purposes
constitutes  a partial hedge against declining prices of the securities or other
instruments required to be delivered under the terms of the Futures Contract. If
the futures price at  expiration of the  option is below  the exercise price,  a
Series  will  retain  the  full  amount  of  the  option  premium,  less related
transaction costs, which provides a partial  hedge against any decline that  may
have  occurred in the Series' portfolio holdings. The writing of a put option on
a Futures Contract constitutes a partial hedge against increasing prices of  the
securities  or other instruments required to be delivered under the terms of the
Futures Contract. If  the futures price  at expiration of  the option is  higher
than  the exercise  price, a Series  will retain  the full amount  of the option
premium which provides  a partial  hedge against any  increase in  the price  of
securities  which the  Series intends  to purchase.  If a  put or  call option a
Series has written  is exercised, the  Series will  incur a loss  which will  be
reduced  by the amount  of the premium  it receives. Depending  on the degree of
correlation between changes  in the value  of its portfolio  securities and  the
changes  in the value of  its futures positions, a  Series' losses from existing
Options on  Futures Contracts  may to  some extent  be reduced  or increased  by
changes in the value of portfolio securities.
 
The  Series  may  purchase Options  on  Futures Contracts  for  hedging purposes
instead of purchasing or selling the underlying Futures Contracts. For  example,
where a decrease in the value of portfolio securities is anticipated as a result
of  a projected market-wide decline or changes  in interest or exchange rates, a
Series could,  in  lieu  of  selling Futures  Contracts,  purchase  put  options
thereon.  In the event that such decrease occurs,  it may be offset, in whole or
in part, by a profit on the  option. Conversely, where it is projected that  the
value  of  securities  to  be  acquired  by  a  Series  will  increase  prior to
acquisition, due to a market advance or changes in interest or exchange rates, a
Series could purchase call Options on Futures Contracts, rather than  purchasing
the underlying Futures Contracts.
 
   
FORWARD  CONTRACTS ON FOREIGN CURRENCY: Each  of the Emerging Growth Series, the
Value Series, the Research Series, the Total Return Series, the Bond Series, the
Strategic Fixed Income  Series, the  World Governments Series,  the Growth  With
Income  Series, the High Income  Series and the Utilities  Series may enter into
forward foreign currency exchange contracts for hedging and, in certain  Series,
non-hedging  purposes (collectively, "Forward Contracts"). Forward Contracts may
be used for hedging  to attempt to  minimize the risk to  the Fund from  adverse
changes  in the relationship between the U.S. dollar and foreign currencies. The
Series intend to enter  into Forward Contracts for  hedging purposes similar  to
those  described above in connection with foreign currency futures contracts. In
particular, a Forward Contract to sell a currency may be entered into in lieu of
the sale of a foreign currency futures contract where a Series seeks to  protect
against  an anticipated  increase in the  exchange rate for  a specific currency
which could reduce the dollar value of portfolio securities denominated in  such
currency.  Conversely, a Series may enter into  a Forward Contract to purchase a
given currency to protect  against a projected increase  in the dollar value  of
securities  denominated in such currency which  the Series intends to acquire. A
Series also may enter  into a Forward  Contract in order to  assure itself of  a
predetermined   exchange  rate  in  connection  with  a  fixed  income  security
denominated in  a foreign  currency.  In addition,  the  Series may  enter  into
Forward  Contracts for "cross hedging" purposes (E.G., the purchase or sale of a
Forward  Contract  on  one  type  of  currency,  as  a  hedge  against   adverse
fluctuations in the value of a second type of currency).
    
 
If  a hedging transaction in Forward Contracts is successful, the decline in the
value of portfolio securities  or other assets  or the increase  in the cost  of
securities  or other assets to  be acquired may be offset,  at least in part, by
profits on the  Forward Contract.  Nevertheless, by entering  into such  Forward
Contracts,  a Series may be required to forego  all or a portion of the benefits
which otherwise could have  been obtained from  favorable movements in  exchange
rates  or natural resources prices. The Series do not intend, in most instances,
to hold Forward Contracts entered into until maturity, at which time they  would
be  required to deliver or accept delivery  of the underlying currency, but will
usually seek  to  close  out  positions  in  such  contracts  by  entering  into
offsetting
 
                                       11
<PAGE>
transactions,  which will serve to  fix a Series' profit  or loss based upon the
value of the contracts at the time the offsetting transaction is executed.
 
The Series may also enter into transactions in Forward Contracts for other  than
hedging  purposes,  which presents  greater profit  potential but  also involves
increased risk. For  example, a  Series may  purchase a  given foreign  currency
through a Forward Contract if, in the judgment of the Adviser, the value of such
currency is expected to rise relative to the U.S. dollar. Conversely, the Series
may  sell the currency through  a Forward Contract if  the Adviser believes that
its value will decline relative to the dollar.
 
A Series  entering  into  such  transactions  will  profit  if  the  anticipated
movements  in foreign  currency exchange rates  occurs, which  will increase its
gross income. Where exchange rates do not move in the direction or to the extent
anticipated, however, the Series may sustain losses, which will reduce its gross
income. Such transactions, therefore, could be considered speculative and  could
involve significant risk of loss.
 
Each Series has established procedures consistent with statements by the SEC and
its  staff  regarding  the use  of  Forward Contracts  by  registered investment
companies, which require the use of segregated assets or "cover " in  connection
with  the purchase and sale  of such contracts. In  those instances in which the
Series satisfies  this  requirement  through  segregation  of  assets,  it  will
maintain,  in a segregated account, cash,  cash equivalents or high-quality debt
securities, which will be marked to market on a daily basis, in an amount  equal
to  the value of its commitments  under Forward Contracts. While these contracts
are not presently  regulated by  the CFTC,  the CFTC  may in  the future  assert
authority  to regulate Forward Contracts. In  such event, the Series' ability to
utilize Forward Contracts in the manner set forth above may be restricted.
 
   
OPTIONS ON FOREIGN  CURRENCIES: Each of  the Emerging Growth  Series, the  Value
Series,  the Total  Return Series, the  Bond Series, the  Strategic Fixed Income
Series, the World Governments  Series, the Growth With  Income Series, the  High
Income Series and the Utilities Series may purchase and write options on foreign
currencies  for hedging purposes  in a manner  similar to that  in which futures
contracts on foreign  currencies, or  Forward Contracts, will  be utilized.  For
example,  a decline in the dollar value of a foreign currency in which portfolio
securities are denominated will reduce the dollar value of such securities, even
if their value  in the foreign  currency remains constant.  In order to  protect
against  such diminutions  in the  value of  portfolio securities,  a Series may
purchase put options on the foreign currency. If the value of the currency  does
decline, the Series will have the right to sell such currency for a fixed amount
in  dollars and will thereby offset, in whole in part, the adverse effect on its
portfolio which otherwise would have resulted.
    
 
Conversely, where a rise in the dollar  value of a currency in which  securities
to be acquired are denominated is projected, thereby increasing the cost of such
securities,  the Series may purchase call  options thereon. The purchase of such
options could offset, at least partially,  the effects of the adverse  movements
in  exchange  rates. As  in the  case of  other types  of options,  however, the
benefit to a Series deriving from purchases of foreign currency options will  be
reduced by the amount of the premium and related transaction costs. In addition,
where  currency exchange  rates do not  move in  the direction or  to the extent
anticipated, a Series could sustain  losses on transactions in foreign  currency
options  which would require  it to forego a  portion or all  of the benefits of
advantageous changes in such rates.
 
A Series may write options on foreign  currencies for the same types of  hedging
purposes.  For example,  where the  Series anticipates  a decline  in the dollar
value of foreign-denominated securities due to adverse fluctuations in  exchange
rates  it could, instead of purchasing a put  option, write a call option on the
relevant currency. If the expected decline  occurs, the option will most  likely
not  be exercised, and the  diminution in value of  portfolio securities will be
offset by the amount of the premium received.
 
Similarly, instead of purchasing a call  option to hedge against an  anticipated
increase in the dollar cost of securities to be acquired, a Series could write a
put  option  on  the  relevant  currency which,  if  rates  move  in  the manner
projected, will expire unexercised and allow the Series to hedge such  increased
cost  up to  the amount of  the premium.  Foreign currency options  written by a
Series will generally be covered  in a manner similar  to the covering of  other
types of options. As in the case of other types of options, however, the writing
of  a foreign  currency option will  constitute only  a partial hedge  up to the
amount of the premium, and only if rates move in the expected direction. If this
does not occur, the option  may be exercised and a  Series would be required  to
purchase  or sell the underlying  currency at a loss which  may not be offset by
the amount of the premium. Through the writing of options on foreign currencies,
a Series also may be required to forego  all or a portion of the benefits  which
might otherwise have been obtained from favorable movements in exchange rates.
 
ADDITIONAL RISK FACTORS:
OPTIONS, FUTURES AND FORWARD TRANSACTIONS
 
RISK  OF IMPERFECT CORRELATION OF HEDGING  INSTRUMENTS WITH A SERIES' PORTFOLIO.
The Series' ability effectively  to hedge all or  a portion of their  portfolios
through   transactions  in  options,  Futures   Contracts,  Options  on  Futures
Contracts, Forward Contracts  and options  on foreign currencies  depend on  the
degree  to which price movements in the underlying index or instrument correlate
with price movements in the relevant  portion of the Series' portfolios. In  the
case  of futures and options based on an index, the portfolio will not duplicate
the components of the  index, and in  the case of futures  and options on  fixed
income  securities, the portfolio  securities which are being  hedged may not be
the same  type  of obligation  underlying  such  contract. The  use  of  Forward
Contracts for "cross hedging" purposes may involve greater correlation risks. As
a  result, the correlation probably will  not be exact. Consequently, the Series
bear the risk that the price of  the portfolio securities being hedged will  not
move in the same amount or direction as the underlying index or obligation.
 
For  example, if  a Series  purchases a  put option  on an  index and  the index
decreases less  than  the value  of  the  hedged securities,  the  Series  would
experience  a loss which is not completely offset  by the put option. It is also
possible that  there  may  be  a  negative  correlation  between  the  index  or
obligation  underlying an option or  Futures Contract in which  the Series has a
position and the portfolio
 
                                       12
<PAGE>
securities  the Series is attempting  to hedge, which could  result in a loss on
both the portfolio and the hedging  instrument. In addition, a Series may  enter
into transactions in Forward Contracts or options on foreign currencies in order
to   hedge  against  exposure  arising   from  the  currencies  underlying  such
instruments. In such  instances, the Series  will be subject  to the  additional
risk  of imperfect  correlation between changes  in the value  of the currencies
underlying such forwards or options and  changes in the value of the  currencies
being hedged.
 
It  should be noted that  stock index futures contracts  or options based upon a
narrower index of securities, such as those of a particular industry group,  may
present greater risk than options or futures based on a broad market index. This
is  due to  the fact  that a  narrower index  is more  susceptible to  rapid and
extreme fluctuations as a result  of changes in the value  of a small number  of
securities. Nevertheless, where a Series enters into transactions in options, or
futures  on narrowly-based indexes for hedging  purposes, movements in the value
of the index  should, if  the hedge is  successful, correlate  closely with  the
portion of the Series' portfolio or the intended acquisitions being hedged.
 
The  trading of  Futures Contracts,  options and  Forward Contracts  for hedging
purposes entails the additional risk of imperfect correlation between  movements
in  the  futures  or option  price  and the  price  of the  underlying  index or
obligation. The anticipated spread  between the prices may  be distorted due  to
the  differences in  the nature  of the  markets such  as differences  in margin
requirements, the liquidity of such markets and the participation of speculators
in the  options,  futures  and  forward markets.  In  this  regard,  trading  by
speculators   in  options,  futures  and  Forward  Contracts  has  in  the  past
occasionally  resulted  in  market  distortions,  which  may  be  difficult   or
impossible to predict, particularly near the expiration of such contracts.
 
The  trading of Options on Futures Contracts  also entails the risk that changes
in the value of the underlying Futures Contracts will not be fully reflected  in
the  value of the option. The  risk of imperfect correlation, however, generally
tends to diminish  as the maturity  date of the  Futures Contract or  expiration
date of the option approaches.
 
Further,  with  respect  to options  on  securities, options  on  stock indexes,
options on currencies and Options on  Futures Contracts, the Series are  subject
to  the risk of market  movements between the time  that the option is exercised
and the time of  performance thereunder. This could  increase the extent of  any
loss suffered by a Series in connection with such transactions.
 
In  writing a covered  call option on  a security, index  or futures contract, a
Series also incurs the risk that changes in the value of the instruments used to
cover the position will not correlate closely  with changes in the value of  the
option  or underlying index or instrument. For  example, where a Series covers a
call option written  on a stock  index through segregation  of securities,  such
securities may not match the composition of the index, and the Series may not be
fully  covered. As a result, the Series could  be subject to risk of loss in the
event of adverse market movements.
 
The writing of  options on securities,  options on stock  indexes or Options  on
Futures  Contracts constitutes only a partial  hedge against fluctuations in the
value of a Series' portfolio.  When a Series writes  an option, it will  receive
premium  income in return for  the holder's purchase of  the right to acquire or
dispose of  the underlying  obligation. In  the  event that  the price  of  such
obligation does not rise sufficiently above the exercise price of the option, in
the  case of a call, or fall below the exercise price, in the case of a put, the
option will  not be  exercised and  the Series  will retain  the amount  of  the
premium,  less related transaction costs, which  will constitute a partial hedge
against any decline that may have occurred in the Series' portfolio holdings  or
any increase in the cost of the instruments to be acquired.
 
Where  the price of the underlying obligation moves sufficiently in favor of the
holder to warrant exercise of the option, however, and the option is  exercised,
the Series will incur a loss which may only be partially offset by the amount of
the  premium  it received.  Moreover,  by writing  an  option, a  Series  may be
required to forego the benefits which might otherwise have been obtained from an
increase in the value of  portfolio securities or other  assets or a decline  in
the value of securities or assets to be acquired.
 
In  the event of the occurrence of any of the foregoing adverse market events, a
Series' overall return may be  lower than if it had  not engaged in the  hedging
transactions.
 
Those  Series  that may  enter transactions  in options  (except for  Options on
Foreign Currencies), Futures Contracts, Options on Futures Contracts and Forward
Contracts for  hedging  purposes  may  also enter  into  such  transactions  for
non-hedging  purposes.  Non-hedging  transactions  in  such  investments involve
greater risks and may result in losses  which may not be offset by increases  in
the  value of portfolio securities  or declines in the  cost of securities to be
acquired. The  Series  will  only  write covered  options,  such  that  cash  or
securities  necessary to  satisfy an option  exercise will be  segregated at all
times, unless the option is covered 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, the  method of covering an  option employed by  a
Series  may not  fully protect it  against risk of  loss and, in  any event, the
Series could suffer losses on the option  position which might not be offset  by
corresponding  portfolio gains. Entering into transactions in Futures Contracts,
Options on  Futures  Contracts and  Forward  Contracts for  other  than  hedging
purposes could expose the Series to significant risk of loss if foreign currency
exchange rates do not move in the direction or to the extent anticipated.
 
With respect to the writing of straddles on securities, a Series incurs the risk
that  the price of the  underlying security will not  remain stable, that one of
the options written will be  exercised and that the  resulting loss will not  be
offset  by the  amount of the  premiums received.  Such transactions, therefore,
create an  opportunity for  increased  return by  providing  a Series  with  two
simultaneous  premiums on the same security,  but involve additional risk, since
the Series may  have an option  exercised against it  regardless of whether  the
price of the security increases or decreases.
 
RISK  OF A  POTENTIAL LACK OF  A LIQUID  SECONDARY MARKET. Prior  to exercise or
expiration, a futures or option position can only be terminated by entering into
a closing purchase  or sale transaction.  This requires a  secondary market  for
such  instruments on the  exchange on which the  initial transaction was entered
into. While the  Series will  enter into options  or futures  positions only  if
there
 
                                       13
<PAGE>
appears to be a liquid secondary market therefor, there can be no assurance that
such  a market will exist for any  particular contracts at any specific time. In
that event, it may not be possible to close out a position held by a Series, and
the Series could be  required to purchase or  sell the instrument underlying  an
option,  make  or receive  a cash  settlement or  meet ongoing  variation margin
requirements. Under  such circumstances,  if the  Series has  insufficient  cash
available  to  meet  margin  requirements, it  will  be  necessary  to liquidate
portfolio securities or other assets at a time when it is disadvantageous to  do
so.  The inability to close out  options and futures positions, therefore, could
have an  adverse  impact on  the  Series'  ability effectively  to  hedge  their
portfolios, and could result in trading losses.
 
The  liquidity of a secondary market in a Futures Contract or option thereon may
be adversely  affected  by  "daily price  fluctuation  limits,"  established  by
exchanges,  which limit  the amount  of fluctuation in  the price  of a contract
during a  single trading  day. Once  the daily  limit has  been reached  in  the
contract,  no  trades may  be entered  into at  a price  beyond the  limit, thus
preventing the liquidation  of open  futures or option  positions and  requiring
traders  to make additional margin  deposits. Prices have in  the past moved the
daily limit on a number of consecutive trading days.
 
The trading of  Futures Contracts and  options is  also subject to  the risk  of
trading  halts,  suspensions,  exchange  or  clearinghouse  equipment  failures,
government intervention,  insolvency of  a brokerage  firm or  clearinghouse  or
other  disruptions  of normal  trading activity,  which could  at times  make it
difficult or impossible  to liquidate  existing positions or  to recover  excess
variation margin payments.
 
MARGIN.  Because  of low  initial margin  deposits  made upon  the opening  of a
futures or forward  position and  the writing  of an  option, such  transactions
involve  substantial leverage.  As a result,  relatively small  movements in the
price of the  contract can  result in  substantial unrealized  gains or  losses.
Where  a Series enters  into such transactions for  hedging purposes, any losses
incurred in connection therewith should, if the hedging strategy is  successful,
be offset, in whole or in part, by increases in the value of securities or other
assets  held by  the Series or  decreases in  the prices of  securities or other
assets  the  Series  intends  to  acquire.  Where  a  Series  enters  into  such
transactions for other than hedging purposes, the margin requirements associated
with such transactions could expose the Series to greater risk.
 
TRADING  AND  POSITION LIMITS.  The exchange  on which  futures and  options are
traded may impose limitations governing the  maximum number of positions on  the
same  side of the market and involving  the same underlying instrument which may
be held by a  single investor, whether  acting alone or  in concert with  others
(regardless  of  whether  such  contracts  are held  on  the  same  or different
exchanges or held  or written in  one or more  accounts or through  one or  more
brokers).  Further, the CFTC  and the various  contract markets have established
limits referred to as "speculative position  limits" on the maximum net long  or
net  short position which any person may hold or control in a particular futures
or option contract. An exchange may order the liquidation of positions found  to
be  in  violation  of  these  limits  and  it  may  impose  other  sanctions  or
restrictions. The  Adviser does  not  believe that  these trading  and  position
limits will have any adverse impact on the strategies for hedging the portfolios
of the Series.
 
RISKS  OF OPTIONS ON FUTURES CONTRACTS. The amount of risk a Series assumes when
it purchases an Option on a Futures Contract is the premium paid for the option,
plus related transaction  costs. In order  to profit from  an option  purchased,
however,  it  may be  necessary  to exercise  the  option and  to  liquidate the
underlying Futures  Contract, subject  to the  risks of  the availability  of  a
liquid  offset market  described herein.  The writer of  an Option  on a Futures
Contract is subject  to the risks  of commodity futures  trading, including  the
requirement  of initial and variation margin payments, as well as the additional
risk that movements in the price of the option may not correlate with  movements
in the price of the underlying security, index, currency or Futures Contract.
 
RISKS  OF  TRANSACTIONS  RELATED  TO  FOREIGN  CURRENCIES  AND  TRANSACTIONS NOT
CONDUCTED ON  U.S.  EXCHANGES.  Transactions in  Forward  Contracts  on  foreign
currencies,   as  well  as  futures  and   options  on  foreign  currencies  and
transactions  executed  on  foreign  exchanges,  are  subject  to  all  of   the
correlation,  liquidity and  other risks  outlined above.  In addition, however,
such transactions  are subject  to the  risk of  governmental actions  affecting
trading  in or the  prices of currencies underlying  such contracts, which could
restrict or eliminate trading and could have a substantial adverse effect on the
value of positions held by a Series. Further, the value of such positions  could
be  adversely  affected by  a  number of  other  complex political  and economic
factors applicable to the countries issuing the underlying currencies.
 
Further, unlike  trading  in  most  other types  of  instruments,  there  is  no
systematic  reporting  of  last sale  information  with respect  to  the foreign
currencies underlying contracts thereon. As a result, the available  information
on  which trading systems will be based may not be as complete as the comparable
data on which a Series makes investment and trading decisions in connection with
other transactions. Moreover, because the  foreign currency market is a  global,
24-hour market, events could occur in that market which will not be reflected in
the  forward, futures or options market  until the following day, thereby making
it more difficult for the Series to respond to such events in a timely manner.
 
Settlements of  exercises  of  over-the-counter  Forward  Contracts  or  foreign
currency  options generally must occur within the country issuing the underlying
currency, which in  turn requires  traders to accept  or make  delivery of  such
currencies  in conformity with any U.S.  or foreign restrictions and regulations
regarding the maintenance of foreign banking relationships, fees, taxes or other
charges.
 
Unlike transactions  entered  into  by  the  Series  in  Futures  Contracts  and
exchange-traded  options, options  on foreign currencies,  Forward Contracts and
over-the-counter options  on  securities  are not  traded  on  contract  markets
regulated  by  the  CFTC or  (with  the  exception of  certain  foreign currency
options) the SEC. To the contrary, such instruments are traded through financial
institutions acting as market-makers, although foreign currency options are also
traded on certain national securities exchanges, such as the Philadelphia  Stock
Exchange  and the Chicago Board Options  Exchange, subject to SEC regulation. In
an over-the-counter trading
 
                                       14
<PAGE>
environment, many of the protections afforded to exchange participants will  not
be  available. For  example, there  are no  daily price  fluctuation limits, and
adverse market movements could therefore continue to an unlimited extent over  a
period  of time. Although the  purchaser of an option  cannot lose more than the
amount of the premium plus related  transaction costs, this entire amount  could
be  lost. Moreover, the  option writer and  a trader of  Forward Contracts could
lose amounts substantially in  excess of their initial  investments, due to  the
margin and collateral requirements associated with such positions.
 
In  addition,  over-the-counter transactions  can only  be  entered into  with a
financial institution willing  to take  the opposite  side, as  principal, of  a
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 a Series could be required to retain options
purchased or  written,  or  Forward  Contracts  entered  into,  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  clearinghouse, and a 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. A
Series will enter into an  over-the-counter transaction only with parties  whose
creditworthiness has been reviewed and found satisfactory by the Adviser.
 
Options  on securities, options on stock  indexes, Futures Contracts, Options on
Futures Contracts and options on foreign  currencies may be traded on  exchanges
located in foreign countries. Such transactions may not be conducted in the same
manner  as those entered into on U.S. exchanges, and may be subject to different
margin, exercise, settlement or expiration procedures. As a result, many of  the
risks  of  over-the-counter  trading  may be  present  in  connection  with such
transactions.
 
Options on foreign currencies traded on national securities exchanges are within
the jurisdiction of the SEC, as  are other securities traded on such  exchanges.
As  a result, many of the protections provided to traders on organized exchanges
will be available with respect to such transactions. In particular, all  foreign
currency  option positions  entered into on  a national  securities exchange are
cleared and guaranteed by the Options Clearing Corporation (the "OCC"),  thereby
reducing the risk of counterparty default. Further, a liquid secondary market in
options  traded on a national securities  exchange may be more readily available
than  in  the  over-the-counter  market,  potentially  permitting  a  Series  to
liquidate  open positions  at a  profit prior to  exercise or  expiration, or to
limit losses in the event of adverse market movements.
 
The purchase and sale of  exchange-traded foreign currency options, however,  is
subject  to the risks of the availability of a liquid secondary market described
above, as well  as the risks  regarding adverse market  movements, margining  of
options   written,  the  nature   of  the  foreign   currency  market,  possible
intervention by governmental authorities and the effects of other political  and
economic  events.  In addition,  exchange-traded  options on  foreign currencies
involve certain risks not presented by the over-the-counter market. For example,
exercise and settlement  of such options  must be made  exclusively through  the
OCC, which has established banking relationships in applicable foreign countries
for  this  purpose. As  a result,  the OCC  may, if  it determines  that foreign
governmental restrictions  or  taxes would  prevent  the orderly  settlement  of
foreign  currency option exercises, or would result  in undue burdens on the OCC
or its clearing member,  impose special procedures  on exercise and  settlement,
such  as technical changes in the mechanics  of delivery of currency, the fixing
of dollar settlement prices or prohibitions on exercise.
 
POLICIES ON THE USE  OF FUTURES AND  OPTIONS ON FUTURES  CONTRACTS. In order  to
assure  that the Series will not be deemed to be a "commodity pool" for purposes
of the Commodity  Exchange Act, regulations  of the CFTC  require that a  Series
enter  into transactions in  Futures Contracts and  Options on Futures Contracts
only (i) for  BONA FIDE hedging  purposes (as defined  in CFTC regulations),  or
(ii)  for non-hedging purposes,  provided that the  aggregate initial margin and
premiums on such  non-hedging positions does  not exceed 5%  of the  liquidation
value  of  the Series'  assets. In  addition,  the Series  must comply  with the
requirements  of  various  state  securities   laws  in  connection  with   such
transactions.
 
Each Series has adopted the additional restriction that it will not enter into a
Futures  Contract if, immediately thereafter, the  value of securities and other
obligations underlying all such Futures Contracts would exceed 50% of the  value
of  such Series' total assets. Moreover, a Series will not purchase put and call
options if as a  result more than 5%  of its total assets  would be invested  in
such options.
 
When a Series purchases a Futures Contract, an amount of cash or securities will
be  deposited in  a segregated  account with  the Series  custodian so  that the
amount so segregated will at all times equal the value of the Futures  Contract,
thereby insuring that the leveraging effect of such futures is minimized.
 
RISKS OF INVESTING IN LOWER RATED BONDS
 
   
Each  of the Emerging Growth Series, the  Value Series, the Research Series, the
Total Return Series, the Bond Series, the Limited Maturity Series, the Strategic
Fixed Income Series, the High Income Series and the Utilities Series may  invest
in  fixed  income  securities  rated  Baa  by  Moody's  Investors  Service, Inc.
("Moody's") or  BBB by  Standard  & Poor's  Ratings  Services ("S&P")  or  Fitch
Investors  Service,  Inc.  ("Fitch") and  comparable  unrated  securities. These
securities, while  normally  exhibiting  adequate  protection  parameters,  have
speculative   characteristics  and  changes  in  economic  conditions  or  other
circumstances are more likely to lead  to a weakened capacity to make  principal
and interest payments than in the case of higher grade fixed income securities.
    
 
Each  of these Series  (except the Limited  Maturity Series) may  also invest in
fixed income securities rated Ba  or lower by Moody's or  BB or lower by S&P  or
Fitch  and comparable unrated securities (commonly known as "junk bonds") to the
extent described in the  Prospectus. No minimum rating  standard is required  by
the Series.
 
                                       15
<PAGE>
These  securities  are  considered speculative  and,  while  generally providing
greater income than investments in higher rated securities, will involve greater
risk of principal and income (including the possibility of default or bankruptcy
of the issuers of such securities)  and may involve greater volatility of  price
(especially during periods of economic uncertainty or change) than securities in
the  higher rating  categories and  because yields  vary over  time, no specific
level of  income can  ever be  assured. These  lower rated  high yielding  fixed
income  securities generally tend  to reflect economic  changes (and the outlook
for economic growth),  short-term corporate  and industry  developments and  the
market's  perception of their credit quality (especially during times of adverse
publicity) to  a  greater  extent  than  higher  rated  securities  which  react
primarily to fluctuations in the general level of interest rates (although these
lower  rated fixed  income securities are  also affected by  changes in interest
rates). In the past, economic downturns  or an increase in interest rates  have,
under certain circumstances, caused a higher incidence of default by the issuers
of  these securities  and may  do so in  the future,  especially in  the case of
highly leveraged issuers.  The prices for  these securities may  be affected  by
legislative  and regulatory developments. The market for these lower rated fixed
income securities may be less liquid than the market for investment grade  fixed
income  securities. Furthermore, the  liquidity of these  lower rated securities
may be affected by the market's  perception of their credit quality.  Therefore,
the  Adviser's  judgment may  at  times play  a  greater role  in  valuing these
securities than in the case of investment grade fixed income securities, and  it
also  may be more difficult during times of certain adverse market conditions to
sell these lower rated securities to  meet redemption requests or to respond  to
changes in the market.
 
While  the  Adviser may  refer to  ratings issued  by established  credit rating
agencies, it is not the Series' policy to rely exclusively on ratings issued  by
these  rating agencies, but rather to supplement such ratings with the Adviser's
own independent and ongoing review of  credit quality. To the extent the  Series
invests  in  these lower  rated securities,  the  achievement of  its investment
objectives may be more  dependent on the Adviser's  own credit analysis than  in
the  case of a fund  investing in higher quality  fixed income securities. These
lower rated securities  may also  include zero coupon  bonds, deferred  interest
bonds and PIK bonds.
 
FOREIGN SECURITIES
 
The  Limited  Maturity  Series  may invest  in  dollar-denominated  foreign debt
securities. The Money Market Series may invest in dollar-denominated  securities
of  foreign issuers and in dollar-denominated  securities of foreign branches of
U.S. banks,  such  as  negotiable certificates  of  deposit  (Eurodollars).  The
remaining  Series may  invest in  dollar-denominated and  non dollar-denominated
foreign securities.  As  discussed  in  the  Prospectus,  investing  in  foreign
securities  generally  represents a  greater degree  of  risk than  investing in
domestic securities due  to possible exchange  rate fluctuations, less  publicly
available  information, more volatile markets,  less securities regulation, less
favorable tax provisions, war or expropriation.  As a result of its  investments
in  foreign securities, a  Series may receive interest  or dividend payments, or
the proceeds  of  the sale  or  redemption  of such  securities,in  the  foreign
currencies   in   which   such  securities   are   denominated.   Under  certain
circumstances, such as where the  Adviser believes that the applicable  exchange
rate  is unfavorable  at the  time the  currencies are  received or  the Adviser
anticipates, for any other reason, that the exchange rate will improve, a Series
may hold such currencies for an indefinite period of time. While the holding  of
currencies  will permit a Series to take advantage of favorable movements in the
applicable exchange rate, such strategy also exposes the Series to risk of  loss
if  exchange rates  move in  a direction adverse  to the  Series' position. Such
losses could reduce any profits or  increase any losses sustained by the  Series
from  the sale or redemption of securities  and could reduce the dollar value of
interest or dividend payments received.
 
AMERICAN DEPOSITARY RECEIPTS
 
   
Each of the  Series (except  the Limited Maturity  Series and  the Money  Market
Series)   may  invest  in  American   Depositary  Receipts  ("ADRs")  which  are
certificates issued  by a  U.S.  depositary (usually  a  bank) and  represent  a
specified  quantity of shares of an underlying  non-U.S. stock on deposit with a
custodian bank as collateral. ADRs may be sponsored or unsponsored. A  sponsored
ADR  is issued  by a  depository which  has an  exclusive relationship  with the
issuer of  the underlying  security. An  unsponsored ADR  may be  issued by  any
number  of U.S. depositories. A  Series may invest in  either type of ADR. Under
the terms  of  most sponsored  arrangements,  depositaries agree  to  distribute
notices  of  shareholder  meetings  and  voting  instructions,  and  to  provide
shareholder communications  and other  information  to the  ADR holders  at  the
request  of  the  issuer  of  the deposited  securities.  The  depositary  of an
unsponsored ADR,  on  the other  hand,  is  under no  obligation  to  distribute
shareholder  communications received from the issuer of the deposited securities
or to pass  through voting rights  to ADR  holders in respect  of the  deposited
securities.  Although the U.S. investor holds  a substitute receipt of ownership
rather than direct stock certificates, the use of the depositary receipts in the
United States can reduce costs and delays as well as potential currency exchange
and other difficulties. A  Series may purchase securities  in local markets  and
direct delivery of these ordinary shares to the local depository of an ADR agent
bank in the foreign country. Simultaneously, the ADR agents create a certificate
which  settles at the Series' custodian in  five days. A Series may also execute
trades on the U.S. markets using existing ADRs. A foreign issuer of the security
underlying an ADR is generally not subject to the same reporting requirements in
the United States as a domestic issuer. Accordingly the information available to
a U.S.  investor  will be  limited  to the  information  the foreign  issuer  is
required  to disclose in its own country and  the market value of an ADR may not
reflect undisclosed material information concerning the issuer of the underlying
security. ADRs may  also be  subject to exchange  rate risks  if the  underlying
foreign securities are denominated in foreign currency.
    
                              -------------------
 
A  Series' limitations, policies and ratings  restrictions are adhered to at the
time of purchase or utilization of assets; a subsequent change in  circumstances
will not be considered to result in a violation of policy.
 
3.  INVESTMENT RESTRICTIONS
 
Each  Series  has adopted  the following  restrictions  which cannot  be changed
without   the   approval    of   the    holders   of   a    majority   of    the
 
                                       16
<PAGE>
Series'  shares (which, as used  in this SAI, means the  lesser of (i) more than
50% of the outstanding shares of the  Trust or a Series, as applicable, or  (ii)
67%  or more of the outstanding shares of  the Trust or a Series, as applicable,
present at a meeting if  holders of more than 50%  of the outstanding shares  of
the  Trust or a Series,  as applicable, are represented  in person or by proxy).
Except  for  Investment  Restriction  (1),  these  investment  restrictions  and
policies  are adhered  to at the  time of  purchase or utilization  of assets; a
subsequent change  in  circumstances will  not  be  considered to  result  in  a
violation of any of the restrictions.
 
The Trust, on behalf of any Series, may not:
 
        (1)  borrow amounts in excess of 33 1/3% of its assets including amounts
    borrowed and then only as a temporary measure for extraordinary or emergency
    purposes;
 
        (2) underwrite securities issued by other persons except insofar as  the
    Series  may technically be deemed an underwriter under the Securities Act of
    1933, as amended (the "1933 Act") in selling a portfolio security;
 
        (3)  purchase  or  sell  real  estate  (including  limited   partnership
    interests  but  excluding securities  secured  by real  estate  or interests
    therein and securities of companies, such as real estate investment  trusts,
    which  deal in real estate  or interests therein), interests  in oil, gas or
    mineral leases, commodities or commodity contracts (excluding currencies and
    any type of option, Futures Contracts and Forward Contracts) in the ordinary
    course of its business.  The Series reserves the  freedom of action to  hold
    and  to sell real estate, mineral leases, commodities or commodity contracts
    (including currencies and any type of option, Futures Contracts and  Forward
    Contracts) acquired as a result of the ownership of securities;
 
        (4) issue any senior securities except as permitted by the 1940 Act. For
    purposes  of this restriction,  collateral arrangements with  respect to any
    type of swap, option, Forward Contracts and Futures Contracts and collateral
    arrangements with respect to initial and variation margin are not deemed  to
    be the issuance of a senior security;
 
        (5)  make loans  to other persons.  For these purposes,  the purchase of
    commercial paper, the  purchase of  a portion  or all  of an  issue of  debt
    securities,  the lending of  portfolio securities, or  the investment of the
    Series' assets in repurchase agreements, shall not be considered the  making
    of a loan; or
 
        (6) purchase any securities of an issuer of a particular industry, if as
    a  result, more than 25% of its gross assets would be invested in securities
    of issuers  whose principal  business activities  are in  the same  industry
    (except  (i) there  is no limitation  with respect to  obligations issued or
    guaranteed by the U.S. Government or its agencies and instrumentalities  and
    repurchase  agreements  collateralized by  such  obligations, (ii)  the High
    Income Series  may invest  up to  40% of  its gross  assets in  each of  the
    electric utility and telephone industries, (iii) the Money Market Series may
    invest  up to  75% of its  assets in all  finance companies as  a group, all
    banks and bank holding companies as a  group and all utility companies as  a
    group when in the opinion of management yield differentials and money market
    conditions  suggest  and  when cash  is  available for  such  investment and
    instruments are available for purchase which fulfill that Series'  objective
    in  terms  of quality  and marketability,  (iv)  the Strategic  Fixed Income
    Series may invest up to  40% of its assets in  each of the electric  utility
    and  telephone industries and (v) the  Utilities Series will invest at least
    25% of its gross assets in the utilities industry).
 
In addition, each Series has adopted the following nonfundamental policies which
may be changed by the vote of the Trust's Board of Trustees without  shareholder
approval. The Trust, on behalf of any Series, will not:
 
        (1)  invest  in illiquid  investments,  including securities  subject to
    legal or contractual restrictions on resale or for which there is no readily
    available market (e.g.,  trading in the  security is suspended,  or, in  the
    case of unlisted securities, where no market exists) if more than 15% of the
    Series'  assets (taken at  market value) (10%  of assets in  the case of the
    Money Market  Series)  would  be invested  in  such  securities.  Repurchase
    agreements  maturing in more than  seven days will be  deemed to be illiquid
    for purposes of the Series' limitation on investment in illiquid securities.
    Securities that are not registered under  the 1933 Act and sold in  reliance
    on  Rule 144A  thereunder, but  are determined to  be liquid  by the Trust's
    Board of Trustees (or its delegee), will not be subject to this 15% (10%  in
    the case of the Money Market Series) limitation;
 
        (2) purchase securities issued by any other investment company in excess
    of  the amount permitted by the 1940  Act, except when such purchase is part
    of a plan of merger or consolidation;
 
        (3) purchase any securities or evidences of interest therein on  margin,
    except that the Series may obtain such short-term credit as may be necessary
    for  the clearance of  any transaction and  except that the  Series may make
    margin deposits  in  connection  with  any type  of  swap,  option,  Futures
    Contracts and Forward Contracts;
 
        (4)  sell any security which the Series does not own unless by virtue of
    its ownership of other securities the Series has at the time of sale a right
    to obtain securities without payment of further consideration equivalent  in
    kind  and amount to the  securities sold and provided  that if such right is
    conditional, the sale is made upon the same conditions;
 
        (5) pledge, mortgage or  hypothecate in excess of  33 1/3% of its  gross
    assets.  For  purposes  of this  restriction,  collateral  arrangements with
    respect to any type of swap, option, Futures Contracts and Forward Contracts
    and payments of initial  and variation margin  in connection therewith,  are
    not considered a pledge of assets;
 
        (6)  purchase or sell any put or call option or any combination thereof,
    provided that this  shall not  prevent the purchase,  ownership, holding  or
    sale of (i) warrants where the
 
                                       17
<PAGE>
    grantor  of the warrants is the issuer  of the underlying securities or (ii)
    put or  call options  or combinations  thereof with  respect to  securities,
    indices of securities, swaps, foreign currencies and Futures Contracts;
 
        (7) invest for the purpose of exercising control or management;
 
        (8)  hold obligations issued or guaranteed  by any one U.S. Governmental
    agency or instrumentality, at the end of any calendar quarter (or within  30
    days thereafter), to the extent such holdings would cause the Series to fail
    to comply with the diversification requirements imposed by Section 817(h) of
    the Internal Revenue Code of 1986, as amended (the "Code"), and the Treasury
    regulations  issued  thereunder  on  segregated  asset  accounts  that  fund
    variable contracts.
 
In addition, as  nonfundamental policies  which may be  changed by  vote of  the
Trust's  Board of Trustees:  (i) each Series,  to the extent  that it invests in
foreign securities, will  be invested  in a  minimum of  five different  foreign
countries  at all  times, provided  that this  minimum is  reduced to  four when
foreign country investments comprise less than 80% of the Series' net assets, to
three when less than 60% of such value, to two when less than 40% of such value,
and to one when less than 20% of such value; (ii) no Series will have more  than
20%  of its  net assets  invested in  securities of  issuers located  in any one
foreign country, provided that  a Series may  have up to 35%  of its net  assets
invested  in securities of issuers located  in Australia, Canada, France, Japan,
the United Kingdom or West Germany; (iii) no Series may borrow amounts in excess
of 10% of its net assets when borrowing for any general purpose or in excess  of
25%  of  net  assets  when  borrowing  as  a  temporary  measure  to  facilitate
redemptions;  and  (iv)  no  Series  may  enter  into  hedging  transactions  by
purchasing   put  and  call  options,  futures  contracts  or  other  derivative
instruments on securities, in an aggregate market value equivalent to more  than
10%  of its total assets.  For purposes of clauses (i)  and (ii) above, ADRs and
European Depositary Receipts shall be deemed to be foreign securities.
 
4.  MANAGEMENT OF THE TRUST
 
The Board of Trustees of the  Trust provides broad supervision over the  affairs
of each Series. MFS is responsible for the investment management of each Series'
assets  and the officers  of the Trust  are responsible for  its operations. The
Trustees and  officers  of the  Trust  are  listed below,  together  with  their
principal  occupations during the past five years. (Their titles may have varied
during that period.)
 
TRUSTEES
 
A. KEITH BRODKIN*, Chairman and President
Massachusetts Financial Services Company, Chairman.
 
NELSON J. DARLING, JR.
Director or  Trustee  of  several corporations  or  trusts,  including:  Eastern
Enterprises (diversified holding company), Trustee.
Address: 18 Tremont Street, Boston, Massachusetts
 
WILLIAM R. GUTOW
Private  Investor;  Real Estate  Consultant; Capitol  Entertainment (Blockbuster
Video Franchise), Vice Chairman.
Address: 3102 Maple Avenue, #100, Dallas, Texas
 
OFFICERS
 
W. THOMAS LONDON*, Treasurer
Massachusetts Financial Services Company, Senior Vice President.
 
STEPHEN E. CAVAN*, Secretary and Clerk
Massachusetts Financial Services Company, Senior Vice President, General Counsel
and Assistant Secretary.
 
JAMES R. BORDEWICK, JR.*, Assistant Secretary
Massachusetts Financial Services Company,  Vice President and Associate  General
Counsel.
 
JAMES O. YOST*, Assistant Treasurer
Massachusetts Financial Services Company, Vice President.
- ------------------------
*"Interested  persons" (as  defined in  the Investment  Company Act  of 1940, as
 amended (the "1940 Act")) of the Adviser, whose address is 500 Boylston Street,
 Boston, Massachusetts 02116.
 
Mr. Brodkin and each officer  hold comparable positions with certain  affiliates
of  MFS  or  with certain  other  funds of  which  MFS  or a  subsidiary  is the
investment adviser or distributor.  Messrs. Brodkin and  Cavan are the  Chairman
and  the Secretary, respectively, of MFD and hold similar positions with certain
other MFS affiliates.
 
   
Listed in the chart below are the  name, address and percentage of ownership  of
each  person of record  or known by the  Trust to own  of record or beneficially
five percent or more of any Series' outstanding securities as of April 30, 1996.
    
 
   
<TABLE>
<CAPTION>
                                                        % OF
                                                     OUTSTANDING
SERIES                   OWNER & ADDRESS               SHARES
- --------------  ----------------------------------  -------------
<S>             <C>                                 <C>
MFS Emerging    Ameritas Life Insurance                  32.69%
  Growth        Company Separate Account
  Series        VA-2 (Annuity), 5900 O Street,
                Lincoln, NE 68510-2234
                United of Omaha Life                     44.55%
                Insurance Company, Mutual of
                Omaha Plaza, Omaha, NE 68175
                Kansas City Life Insurance                5.24%
                Company Variable Annuity, P.O.
                Box 419139, Kansas City, MO
                64141-6139
                Union Central Life Insurance              8.12%
                Company Group Annuity,
                Mutual Funds -- Station 3,
                1876 Waycross Road,
                Cincinnati, OH 45240-2825
MFS Value       Massachusetts Financial                  98.84%
  Series        Services Company, 500 Boylston
                Street, Boston MA 02116-3740
MFS Research    MFS Fund Distributors, Inc.,              8.84%
  Series        500 Boylston Street, Boston,
                MA 02116-3740
                United of Omaha Life Insurance           73.28%
                Company, Mutual of Omaha
                Plaza, Omaha, NE 68175
                Kansas City Life Insurance               12.76%
                Company Variable Annuity,
                P.O. Box 419139, Kansas
                City, MO 64141-6139
</TABLE>
    
 
                                       18
<PAGE>
   
<TABLE>
<CAPTION>
                                                        % OF
                                                     OUTSTANDING
SERIES                   OWNER & ADDRESS               SHARES
- --------------  ----------------------------------  -------------
<S>             <C>                                 <C>
MFS Growth      Union Central Life Insurance             10.57%
  With          Company Group Annuity,
  Income        Mutual Funds -- Station 3,
  Series        1876 Waycross Road,
                Cincinnati, OH 45240-2825
                MFS Fund Distributors, Inc.,             87.84%
                500 Boylston Street, Boston,
                MA 02116-3740
MFS Total       MFS Fund Distributors, Inc.,              7.98%
  Return        500 Boylston Street, Boston,
  Series        MA 02116-3740
                CG Variable Annuity Separate             67.66%
                Account II, 900 Cottage
                Grove Road S204, Hartford,
                CT 06152-0001
                Kansas City Life Insurance                6.06%
                Company Variable Annuity,
                P.O. Box 41939, Kansas
                City, MO 64141-6139
                United Companies                         10.33%
                Life Insurance Company
                Separate Account One,
                8545 United Plaza Blvd.,
                Baton Rouge, LA 70809-2251
MFS Utilities   Ameritas Life Insurance                  38.22%
  Series        Company Separate Account
                VA-2 (Annuity), 5900 O
                Street, Lincoln, NE 68510-2234
                MFS Fund Distributors, Inc.,             18.50%
                500 Boylston Street, Boston,
                MA 02116-3740
                CG Variable Annuity Separate             33.17%
                Account II, 900 Cottage
                Grove Road S204, Hartford,
                CT 06152-0001
                Kansas City Life Insurance                5.22%
                Company Variable Annuity,
                P.O. Box 419139,
                Kansas City, MO 64141-6139
MFS High        MFS Fund Distributors, Inc.,             12.80%
  Income        500 Boylston Street, Boston,
  Series        MA 02116-3740
                United of Omaha Life Insurance           79.37%
                Company, Mutual of Omaha
                Plaza, Omaha, NE 68175
                Union Central Life Insurance              6.96%
                Company Group Annuity,
                Mutual Funds -- Station 3,
                1876 Waycross Road,
                Cincinnati, OH 45240-2825
MFS World       Century Variable Annuity Account         60.77%
  Governments   Century Life of America, 2000
  Series        Heritage Way, Waverly, IA
                50677-9208
                United of Omaha Life Insurance           22.88%
                Company, Mutual of Omaha
                Plaza, Omaha, NE 68175
                CG Variable Annuity Separate              5.41%
                Account II, 900 Cottage
                Grove Road S204, Hartford,
                CT 06152-0001
<CAPTION>
                                                        % OF
                                                     OUTSTANDING
SERIES                   OWNER & ADDRESS               SHARES
- --------------  ----------------------------------  -------------
<S>             <C>                                 <C>
MFS Strategic   Massachusetts Financial Services         98.84%
  Fixed Income  Company, 500 Boylston
  Series        Street, Boston, MA 02116-3740
MFS Bond        Kansas City Life Insurance               34.72%
  Series        Company Variable Annuity,
                P.O. Box 419139, Kansas
                City, MO 64141-6139
                MFS Fund Distributors, Inc.,             59.24%
                500 Boylston Street, Boston,
                MA 02116-3740
MFS Limited     Massachusetts Financial Services         98.84%
  Maturity      Company, 500 Boylston
  Series        Street, Boston, MA 02116-3740
MFS Money       MFS Fund Distributors, Inc.,             37.56%
  Market        500 Boylston Street, Boston,
  Series        MA 02116-3740
                First Citicorp Life Insurance            55.94%
                Company, Citicorp Plaza, P.O.
                Box 7031, Dover, DE 19903-7031
                Massachusetts Financial Services          6.38%
                Company, 500 Boylston
                Street, Boston, MA 02116-3740
</TABLE>
    
 
The Trust pays the compensation of  non-interested Trustees (who will receive  a
fee  of $217 per  year per Series plus  $100 per meeting  and $100 per committee
meeting  attended  per  Series,  together  with  such  Trustee's   out-of-pocket
expenses).
 
Set  forth  in  Exhibit A  hereto  is  certain information  concerning  the cash
compensation paid to Trustees.
 
The Declaration of Trust provides that the Trust will indemnify its Trustees and
officers against liabilities and expenses incurred in connection with litigation
in which they may be involved because  of their offices with the Trust,  unless,
as  to liabilities of the  Trust or its shareholders,  it is finally adjudicated
that they  engaged  in  willful  misfeasance, bad  faith,  gross  negligence  or
reckless  disregard of the duties involved in  their offices, or with respect to
any matter, unless it is adjudicated that they did not act in good faith in  the
reasonable  belief that their actions were in the best interest of the Trust. In
the case of settlement, such indemnification will not be provided unless it  has
been  determined pursuant  to the  Declaration of  Trust, that  such officers or
Trustees have not engaged in willful misfeasance, bad faith, gross negligence or
reckless disregard of their duties.
 
INVESTMENT ADVISER
 
MFS and its predecessor organizations have a history of money management  dating
from  1924. MFS is a subsidiary of Sun Life of Canada (U.S.), which in turn is a
wholly owned subsidiary of Sun Life Assurance Company of Canada ("Sun Life").
 
INVESTMENT ADVISORY AGREEMENT
 
MFS manages  the  assets of  each  Series  pursuant to  an  Investment  Advisory
Agreement  with the Trust  on behalf of each  Series dated as  of April 14, 1994
(the "Advisory  Agreement"). MFS  provides the  Series with  overall  investment
advisory  and  administrative services,  as well  as general  office facilities.
Subject to such  policies as the  Trustees may determine,  MFS makes  investment
decisions for
 
                                       19
<PAGE>
the  Series. For these  services and facilities, the  Adviser receives an annual
management fee, computed and paid monthly, as disclosed in the Prospectus  under
the heading "Management of the Series."
 
In  order to  comply with  the expense  limitations of  certain state securities
commissions, MFS will reduce its management fee or otherwise reimburse a  Series
for  any  expenses,  exclusive  of interest,  taxes  and  brokerage commissions,
incurred by the Series in any fiscal year to the extent such expenses exceed the
most restrictive of such  state expense limitations.  MFS will make  appropriate
adjustments  to such reductions and reimbursements  in response to any amendment
or rescission of the various state requirements.
 
MFS pays the compensation of the Trust's  officers and of any Trustee who is  an
officer   of  MFS.  MFS  also  furnishes   at  its  own  expense  all  necessary
administrative services, including office space, equipment, clerical  personnel,
investment  advisory  facilities, and  all  executive and  supervisory personnel
necessary  for  managing  each  Series'  investments,  effecting  its  portfolio
transactions and, in general, administering its affairs.
 
   
The  Advisory Agreement  with the  Trust will remain  in effect  until August 1,
1997, and will continue in effect thereafter with respect to any Series only  if
such  continuance is  specifically approved  at least  annually by  the Board of
Trustees or  by  vote  of a  majority  of  the Series'  shares  (as  defined  in
"Investment  Restrictions") and, in  either case, by a  majority of the Trustees
who are not parties to the Advisory Agreement or interested persons of any  such
party. The Advisory Agreement terminates automatically if it is assigned and may
be  terminated with respect to any Series  without penalty by vote of a majority
of the Series'  shares (as defined  in "Investment Restrictions")  or by  either
party  on not  more than  60 days' nor  less than  30 days'  written notice. The
Advisory Agreement with respect  to each Series provides  that if MFS ceases  to
serve  as the investment adviser to the  Series, the Series will change its name
so as to delete the  term "MFS" and that MFS  may render services to others  and
may permit other fund clients to use the term "MFS" in their names. The Advisory
Agreement  also provides that neither MFS nor  its personnel shall be liable for
any error of  judgment or  mistake of law  or for  any loss arising  out of  any
investment  or for any  act or omission  in the execution  and management of the
Series, except for  willful misfeasance, bad  faith or gross  negligence in  the
performance  of its or their duties or by reason of reckless disregard of its or
their obligations and duties under the Advisory Agreement.
    
 
CUSTODIAN
 
Investors Bank & Trust Company (the "Custodian") is the custodian of the Trust's
assets. The  Custodian's responsibilities  include safekeeping  and  controlling
each  Series'  cash  and  securities,  handling  the  receipt  and  delivery  of
securities, determining  income  and  collecting interest  and  dividends  on  a
Series'  investments, maintaining books of original entry for portfolio and fund
accounting and other required books and accounts, and calculating the daily  net
asset  value  of shares  of the  Series.  The Custodian  does not  determine the
investment policies of the Series or decide which securities the Series will buy
or sell. Each Series may, however, invest in securities of the Custodian and may
deal with the Custodian as  principal in securities transactions. The  Custodian
has  contracted with MFS for MFS to perform certain accounting functions related
to certain transactions for  which the Adviser receives  remuneration on a  cost
basis.  State  Street  Bank  and  Trust  Company  serves  as  the  dividend  and
distribution disbursing agent of the Series.
 
SHAREHOLDER SERVICING AGENT
 
MFS Service Center,  Inc. (the  "Shareholder Servicing Agent"),  a wholly  owned
subsidiary  of MFS and a registered  transfer agent, is each Series' shareholder
servicing agent, pursuant to  a Shareholder Servicing  Agent Agreement with  the
Trust  on  behalf  of  the Series,  dated  as  of April  14,  1994  (the "Agency
Agreement"). The Shareholder Servicing Agent's responsibilities under the Agency
Agreement include administering and performing transfer agent functions and  the
keeping  of records in connection with  the issuance, transfer and redemption of
shares of the Series. For these  services, the Shareholder Servicing Agent  will
receive  a fee calculated as a percentage of  the average daily net assets at an
effective annual rate of  up to 0.035%. In  addition, the Shareholder  Servicing
Agent  will  be reimbursed  by a  Series  for certain  expenses incurred  by the
Shareholder Servicing Agent on behalf of the Series. State Street Bank and Trust
Company, the  dividend and  distribution disbursing  agent for  the Series,  has
contracted  with  the  Shareholder  Servicing Agent  to  administer  and perform
certain dividend and distribution disbursing functions for the Series.
 
DISTRIBUTOR
 
MFD, a  wholly  owned subsidiary  of  MFS, serves  as  the distributor  for  the
continuous  offering of shares of the Trust pursuant to a Distribution Agreement
dated as of April 14, 1994 (the "Distribution Agreement").
 
As agent, MFD currently offers  shares of each Series  on a continuous basis  to
the  separate accounts  of Participating  Insurance Companies  in all  states in
which the Series  or the  Trust may  from time to  time be  registered or  where
permitted  by  applicable  law.  The Distribution  Agreement  provides  that MFD
accepts orders for shares at net asset  value as no sales commission or load  is
charged. MFD has made no firm commitment to acquire shares of any Series.
 
   
The  Distribution Agreement will remain in effect  until August 1, 1997 and will
continue in effect thereafter only if such continuance is specifically  approved
at  least annually  by the Board  of Trustees  or by vote  of a  majority of the
Trust's shares (as defined in "Investment Restrictions") and in either case,  by
a majority of the Trustees who are not parties to such Distribution Agreement or
interested  persons  of any  such party.  The Distribution  Agreement terminates
automatically if it is assigned and may be terminated without penalty by  either
party on not more than 60 days' nor less than 30 days' notice.
    
 
5.  PORTFOLIO TRANSACTIONS AND BROKERAGE
   COMMISSIONS
 
Specific  decisions to  purchase or  sell securities  for a  Series are  made by
employees of  MFS, who  are appointed  and supervised  by its  senior  officers.
Changes  in a Series' investments are reviewed by the Trust's Board of Trustees.
A Series' portfolio manager may serve other clients of MFS or any subsidiary  of
MFS in a similar capacity.
 
The  primary  consideration  in  placing  portfolio  security  transactions with
broker-dealers   for    execution    is    to   obtain    and    maintain    the
 
                                       20
<PAGE>
availability of execution at the most favorable prices and in the most effective
manner  possible.  MFS  has  complete  freedom as  to  the  markets  in  and the
broker-dealers through which it seeks this result. MFS attempts to achieve  this
result  by selecting broker-dealers to  execute portfolio transactions on behalf
of the  Series and  other clients  of MFS  on the  basis of  their  professional
capability,  the value and quality of their brokerage services, and the level of
their brokerage commissions.  In the case  of securities, such  as fixed  income
securities, which are principally traded in the over-the-counter market on a net
basis  through dealers acting for their own account and not as brokers (where no
stated commissions  are  paid  but  the prices  include  a  dealer's  markup  or
markdown),  MFS normally seeks to deal  directly with the primary market makers,
unless in its  opinion, better prices  are available elsewhere.  In the case  of
securities  purchased from underwriters,  the cost of  such securities generally
includes a  fixed underwriting  commission or  concession. Securities  firms  or
futures  commission merchants may receive  brokerage commissions on transactions
involving options, Futures Contracts  and Options on  Futures Contracts and  the
purchase  and  sale  of  underlying securities  upon  exercise  of  options. The
brokerage  commissions  associated  with  buying  and  selling  options  may  be
proportionately   higher   than   those  associated   with   general  securities
transactions. From time to time, soliciting dealer fees are available to MFS  on
the  tender of  a Series' portfolio  securities in so-called  tender or exchange
offers. Such soliciting dealer fees are  in effect recaptured for the Series  by
MFS. At present no other recapture arrangements are in effect.
 
Under  the  Advisory  Agreements  and  as  permitted  by  Section  28(e)  of the
Securities Exchange Act of  1934, as amended,  MFS may cause a  Series to pay  a
broker-dealer which provides brokerage and research services to MFS an amount of
commission  for effecting a securities transaction for a Series in excess of the
amount other  broker-dealers  would have  charged  for the  transaction  if  MFS
determines  in good faith that the  greater commission is reasonable in relation
to the value of  the brokerage and research  services provided by the  executing
broker-dealer  viewed  in  terms of  either  a particular  transaction  or MFS's
overall responsibilities to the Series or to its other clients. Not all of  such
services are useful or of value in advising a Series.
 
The  term "brokerage and research  services" includes advice as  to the value of
securities, the  advisability  of  purchasing or  selling  securities,  and  the
availability  of purchasers  or sellers  of securities;  furnishing analyses and
reports concerning issues, industries, securities, economic factors and  trends,
portfolio  strategy and  the performance  of accounts;  and effecting securities
transactions and performing functions incidental  thereto such as clearance  and
settlement.
 
Although  commissions paid on every transaction will, in the judgment of MFS, be
reasonable in  relation  to  the  value  of  the  brokerage  services  provided,
commissions  exceeding those  which another broker  might charge may  be paid to
broker-dealers who  were  selected to  execute  transactions on  behalf  of  the
Series'  and  MFS's  other  clients  in part  for  providing  advice  as  to the
availability of purchasers or  sellers of securities  and services in  effecting
securities  transactions  and performing  functions  incidental thereto  such as
clearance and settlement.
 
Broker-dealers may be willing to furnish statistical, research and other factual
information or  services ("Research")  to MFS  for no  consideration other  than
brokerage  or underwriting  commissions. Securities may  be bought  or sold from
time to time  through such broker-dealers  on behalf of  a Series. The  Trustees
(together  with  the Trustees  of  the other  MFS  Funds) have  directed  MFS to
allocate a total of $23,100 of commission business from the various MFS Funds to
the Pershing Division of Donaldson, Lufkin  & Jenrette as consideration for  the
annual  renewal of the Lipper Directors' Analytical Data Service (which provides
information useful to the  Trustees in reviewing  the relationship between  each
Fund and MFS).
 
The  investment management personnel  of MFS attempt to  evaluate the quality of
Research provided by brokers. Results of  this effort are sometimes used by  MFS
as   a  consideration  in   the  selection  of   brokers  to  execute  portfolio
transactions. However, MFS is unable to quantify the amount of commissions which
will be  paid as  a result  of such  Research because  a substantial  number  of
transactions  will be effected through brokers  which provide Research but which
were selected principally because of their execution capabilities.
 
The management  fee that  each Series  pays  to MFS  will not  be reduced  as  a
consequence  of the receipt  of brokerage and  research services by  MFS. To the
extent a Series' portfolio  transactions are used to  obtain such services,  the
brokerage  commissions paid by the Series will exceed those that might otherwise
be paid, by an amount which cannot be presently determined. Such services  would
be  useful and of value to  MFS in serving both a  Series and other clients and,
conversely, such services  obtained by  the placement of  brokerage business  of
other  clients would  be useful to  MFS in  carrying out its  obligations to the
Series. While such services are not expected to reduce the expenses of MFS,  MFS
would, through use of the services, avoid the additional expenses which would be
incurred  if it should attempt to develop comparable information through its own
staff.
 
For fiscal year ended December 31,  1995, the Emerging Growth Series,  Utilities
Series,  Total Return Series, Growth With Income Series and Research Series paid
brokerage commissions of $9,408, $8,281, $2,571, $191 and $6,332,  respectively,
on  total  transactions  of  $6,057,384,  $4,450,825,  $2,161,403,  $346,170 and
$4,278,466, respectively.
 
In certain instances there  may be securities which  are suitable for a  Series'
portfolio  as well  as for  that of  one or  more of  the other  clients of MFS.
Investment decisions for a  Series and for  such other clients  are made with  a
view  to achieving their respective investment objectives. It may develop that a
particular security is bought or sold for  only one client even though it  might
be  held  by, or  bought  or sold  for,  other clients.  Likewise,  a particular
security may be bought for  one or more clients when  one or more other  clients
are  selling that same  security. Some simultaneous  transactions are inevitable
when several clients receive investment advice from the same investment adviser,
particularly when the same security is suitable for the investment objectives of
more than one client. When two or more clients are simultaneously engaged in the
purchase or  sale of  the  same security,  the  securities are  allocated  among
clients  in a  manner believed  by the Adviser  to be  equitable to  each. It is
recognized that in some cases this system could have
 
                                       21
<PAGE>
a detrimental effect on the price or volume  of the security as far as a  Series
is  concerned. In other cases, however, it is believed that a Series' ability to
participate in  volume  transactions  will produce  better  executions  for  the
Series.
 
6.  TAX STATUS
 
Shares  of  the  Series  are  offered  only  to  the  separate  accounts  of the
Participating Insurance  Companies  that  fund  Contracts.  See  the  applicable
Contract  prospectus for a discussion of the special taxation of those companies
with respect to those accounts and of the Contract holders.
 
Each Series of the Trust intends to elect and qualify each year for treatment as
a "regulated investment company" under Subchapter M of the Internal Revenue Code
of 1986,  as amended  (the "Code")  by meeting  all applicable  requirements  of
Subchapter  M, including  requirements as  to the  nature of  each Series' gross
income, the  amount  of each  Series'  distributions, and  the  composition  and
holding  period of each Series' portfolio assets. Because each Series intends to
distribute all of its net investment income and net realized capital and foreign
currency gains to shareholders in accordance  with the timing and certain  other
requirements imposed by the Code, it is not expected that any of the Series will
be  required to pay any federal income  or excise taxes, although a Series which
has foreign-source income may be subject to foreign withholding taxes. If any of
the Series should  fail to qualify  as a "regulated  investment company" in  any
year,  that Series would incur  a regular corporate federal  income tax upon its
taxable income.
 
Each Series intends to diversify its assets as required by section 817(h) of the
Code and the regulations thereunder.  These requirements, which are in  addition
to  the diversification requirements of  Subchapter M, place certain limitations
on the proportion of each Series' assets  that may be represented by any  single
investment  and securities  from the  same issuer.  If a  Series should  fail to
comply with these  requirements, variable  annuity and  variable life  insurance
contracts  that invest in the Series would  not be treated as annuity, endowment
or life insurance contracts under the Code.
 
Distributions of  net capital  gains,  whether made  in  cash or  in  additional
shares, are taxable to shareholders as long-term capital gains without regard to
the   length  of  time   the  shareholders  have   held  their  shares.  Certain
distributions of a Series which are declared in October, November, or  December,
to  shareholders of record in such month and paid the following January, will be
taxable to shareholders as if received on December 31 of the year in which  they
are declared.
 
Any  investment  by a  Series  in zero  coupon  bonds, deferred  interest bonds,
payment-in-kind bonds,  certain  stripped  securities,  and  certain  securities
purchased  at a market discount will cause  the Series to recognize income prior
to the receipt of cash  payments with respect to  those securities. In order  to
distribute this income and avoid a tax on the Series, the Series may be required
to  liquidate portfolio  securities that  it might  otherwise have  continued to
hold, potentially resulting in additional taxable gain or loss to the Series.
 
A Series' transactions in options, Futures Contracts, Forward Contracts, foreign
currencies, swaps  and  related  transactions,  to the  extent  allowed  by  its
investment  objectives, will be subject to special tax rules that may affect the
amount,  timing,  and   character  of   Series  income   and  distributions   to
shareholders.  For  example, certain  positions  held by  a  Series on  the last
business day of each taxable year will be marked to market (I.E., treated as  if
closed  out) on that  day, and any  gain or loss  associated with the positions,
will be  treated as  60% long-term  and  40% short-term  capital gain  or  loss.
Certain  positions held by a Series that substantially diminish its risk of loss
with respect to other positions in its portfolio may constitute "straddles," and
may be subject to special tax rules that would cause deferral of Series  losses,
adjustments  in  the holding  periods of  Series  securities, and  conversion of
short-term into  long-term  capital  losses. Certain  tax  elections  exist  for
straddles which may alter the effects of these rules. Each Series will limit its
activities   in  options,  Futures  Contracts,  Forward  Contracts  and  foreign
currencies to the extent necessary to  meet the requirements of Subchapter M  of
the Code.
 
Special  tax  considerations apply  with  respect to  a  Series that  invests in
foreign securities. Foreign  exchange gains  and losses realized  by the  Series
will  generally  be  treated  as  ordinary income  and  losses.  Use  of foreign
currencies for non-hedging purposes may be limited in order to avoid a tax on  a
Series. Investment by a Series in certain "passive foreign investment companies"
may also be limited in order to avoid a tax on the Series.
 
Investment income received by a Series from sources within foreign countries may
be subject to foreign income taxes withheld at the source. The United States has
entered  into tax treaties with many foreign countries that may entitle a Series
to a reduced rate of  tax or an exemption from  tax on such income; the  Series'
intend  to qualify for  treaty reduced rates where  available. It is impossible,
however, to determine a  Series effective rate of  foreign tax in advance  since
the  amount of the Series' assets to be invested within various countries is not
known.
 
7.  NET INCOME AND DISTRIBUTIONS
 
   
MONEY MARKET SERIES: The net income  attributable to the Money Market Series  is
determined  each day during  which the Exchange  is open for  trading. As of the
date of this SAI, the Exchange is open for trading every weekday except for  the
following  holidays (or the  days on which  they are observed):  New Year's Day,
Presidents' Day,  Good  Friday,  Memorial  Day,  Independence  Day,  Labor  Day,
Thanksgiving Day, Christmas Day. (For taxation information on distributions, see
"Tax Status" above.)
    
 
For  this purpose,  the net  income attributable to  shares of  the Money Market
Series (from the time of the immediately preceding determination thereof)  shall
consist  of (i) all interest income accrued on the portfolio assets of the Money
Market Series, (ii) less all actual and accrued expenses of Money Market  Series
determined  in  accordance with  generally  accepted accounting  principles, and
(iii)  plus  or  minus  net  realized  gains  and  losses  and  net   unrealized
appreciation  or depreciation on the assets of the Money Market Series. Interest
income shall include discount earned  (including both original issue and  market
discount) on discount paper accrued ratably to the date of maturity.
 
Since  the net  income is  declared as a  dividend each  time the  net income is
determined,   the   net    asset   value    per   share    (I.E.,   the    value
 
                                       22
<PAGE>
of  the net assets  of the Money Market  Series divided by  the number of shares
outstanding)  remains  at   $1.00  per   share  immediately   after  each   such
determination  and  dividend  declaration.  Any  increase  in  the  value  of  a
shareholder's investment, representing the  reinvestment of dividend income,  is
reflected by an increase in the number of shares in its account.
 
It  is expected the shares  of the Money Market Series  will have a positive net
income at the  time of each  determination thereof.  If for any  reason the  net
income  determined at  any time  is a  negative amount,  which could  occur, for
instance, upon default by  an issuer of a  portfolio security, the Money  Market
Series  would first offset the negative  amount with respect to each shareholder
account from the dividends declared during  the month with respect to each  such
account.  If and to the  extent that such negative  amount exceeds such declared
dividends at the end of the month (or during the month in the case of an account
liquidated in its entirety), the Money Market Series could reduce the number  of
its  outstanding shares by treating each  shareholder of the Money Market Series
as having contributed to its capital  that number of full and fractional  shares
of  the Money Market Series in the  account of such shareholder which represents
its proportion of such excess. Each shareholder the Money Market Series will  be
deemed  to  have  agreed to  such  contribution  in these  circumstances  by its
investment in the Money Market Series. This procedure would permit the net asset
value per share of the Money Market Series to be maintained at a constant  $1.00
per share.
 
ALL  OTHER SERIES:  Each Series  other than the  Money Market  Series intends to
distribute to its shareholders annually dividends substantially equal to all  of
its  net  investment  income. Such  Series'  net investment  income  consists of
non-capital gain income  less expenses.  Such Series' intend  to distribute  net
realized  short-  and  long-term  capital  gains,  if  any,  at  least annually.
Shareholders will be  informed of  the tax consequences  of such  distributions,
including  whether any portion represents a return  of capital, after the end of
each calendar  year.  (For additional  taxation  information, see  "Tax  Status"
above.)
 
8.  DETERMINATION OF NET ASSET VALUE;
   PERFORMANCE INFORMATION
 
NET ASSET VALUE
 
The net asset value per share of each Series is determined each day during which
the  Exchange is open for  trading. This determination is  made once during each
such day as of  the close of  regular trading on the  Exchange by deducting  the
amount  of a Series' liabilities  from the value of  its assets and dividing the
difference by the number of shares of the Series outstanding.
 
MONEY MARKET SERIES: Portfolio securities of the Money Market Series are  valued
at  amortized cost, which the Trustees have determined in good faith constitutes
fair value  for the  purposes of  complying with  the 1940  Act. This  valuation
method  will continue to be used until  such time as the Trustees determine that
it does not  constitute fair value  for such purposes.  The Money Market  Series
will  limit  its  portfolio  to  those  investments  in  U.S. dollar-denominated
instruments which the Board of Trustees determines present minimal credit risks,
and which are of high qualify as  determined by any major rating service or,  in
the  case  of any  instrument that  is not  so rated,  of comparable  quality as
determined by the Board of Trustees. The Money Market Series has also agreed  to
maintain  a dollar-weighted average  maturity of 90  days or less  and to invest
only in securities  maturing in 13  months or  less. The Board  of Trustees  has
established  procedures designed to  stabilize the net asset  value per share of
the Money Market Series, as computed for the purposes of sales and  redemptions,
at  $1.00 per share. If  the Trustees determine that  a deviation from the $1.00
per share price  may exist  which may  result in  a material  dilution or  other
unfair  result to investors or existing  shareholders, they will take corrective
action as they regard as necessary  and appropriate, which action could  include
the  sale of instruments prior to maturity (to realize capital gains or losses);
shortening average portfolio  maturity; withholding dividends;  or using  market
quotations for valuation purposes.
 
ALL  OTHER  SERIES:  Securities,  futures contracts  and  options  in  a Series'
portfolio (other than short-term obligations) for which the principal market  is
one  or more  securities or  commodities exchanges  will be  valued at  the last
reported sale price or at the settlement price prior to the determination (or if
there has  been no  current  sale, at  the closing  bid  price) on  the  primary
exchange  on which such securities, futures contracts or options are traded; but
if a  securities exchange  is  not the  principal  market for  securities,  such
securities  will,  if  market quotations  are  readily available,  be  valued at
current bid prices, unless such securities are reported on the NASDAQ system, in
which case they  are valued  at the  last sale price  or, if  no sales  occurred
during  the  day, at  the last  quoted  bid price.  Debt securities  (other than
short-term obligations but including listed  issues) in a Series' portfolio  are
valued  on the basis of valuations furnished by a pricing service which utilizes
both dealer-supplied valuations and electronic data processing techniques  which
take  into account  appropriate factors  such as  institutional-sized trading in
similar groups of securities,  yields, quality, coupon  rate, maturity, type  of
issue, trading characteristics and other market data, without exclusive reliance
upon quoted prices or exchange or over-the-counter prices, since such valuations
are  believed  to reflect  more accurately  the fair  value of  such securities.
Short-term obligations, if any, in a  Series' portfolio are valued at  amortized
cost,  which  constitutes fair  value as  determined by  the Board  of Trustees.
Short-term securities with  a remaining maturity  in excess of  60 days will  be
valued   based  upon  dealer  supplied   valuations.  Portfolio  securities  and
over-the-counter options, for which  there are no  quotations or valuations  are
valued  at fair value as determined in good  faith by or at the direction of the
Board of Trustees.
 
PERFORMANCE INFORMATION
 
MONEY MARKET SERIES: The Money Market Series will provide current annualized and
effective annualized yield quotations based on the daily dividends of shares  of
the  Money Market  Series. These  quotations may  from time  to time  be used in
advertisements, shareholder reports or other communications to shareholders.
 
Any current yield quotation of the Money  Market Series which is used in such  a
manner  as to  be subject to  the provisions of  Rule 482(d) under  the 1933 Act
shall consist of an annualized historical yield, carried at least to the nearest
hundredth of one  percent, based  on a specific  seven calendar  day period  and
shall  be  calculated by  dividing the  net change  in the  value of  an account
 
                                       23
<PAGE>
having a balance of one  share of that class at  the beginning of the period  by
the  value of  the account at  the beginning  of the period  and multiplying the
quotient by  365/7. For  this purpose  the  net change  in account  value  would
reflect  the value of additional shares purchased with dividends declared on the
original share and dividends  declared on both the  original share and any  such
additional  shares, but would not reflect any  realized gains or losses from the
sale of securities or any  unrealized appreciation or depreciation on  portfolio
securities.  In  addition, any  effective yield  quotation  of the  Money Market
Series so used shall  be calculated by compounding  the current yield  quotation
for such period by multiplying such quotation by 7/365, adding 1 to the product,
raising  the sum to a  power equal to 365/7, and  subtracting 1 from the result.
These yield quotations should not be  considered as representative of the  yield
of  the Money Market Series in the future since the yield will vary based on the
type,  quality  and  maturities  of  the  securities  held  in  its   portfolio,
fluctuations in short-term interest rates and changes in the Money Market Series
expenses.  Yield quotations for the Series  are presented in Appendix B attached
hereto.
 
ALL OTHER SERIES:
 
TOTAL RATE OF RETURN --  Each Series, other than  the Money Market Series,  will
calculate  its  total  rate of  return  of  its shares  for  certain  periods by
determining the average  annual compounded  rates of return  over those  periods
that   would  cause  an  investment  of  $1,000  (made  with  all  distributions
reinvested) to reach the  value of that  investment at the  end of the  periods.
Each  Series may also calculate total  rates of return which represent aggregate
performance over  a period  or year-by-year  performance. Total  rate of  return
quotations for each Series are presented in Appendix B attached hereto.
 
YIELD  -- Any yield quotation for a  Series, other than the Money Market Series,
is based on the annualized  net investment income per  share of that Series  for
the 30-day period. The yield for such a Series is calculated by dividing its net
investment  income earned during the  period by the offering  price per share of
that Series  on  the last  day  of the  period.  The resulting  figure  is  then
annualized.  Net investment income  per share is determined  by dividing (i) the
dividends and interest of that Series during the period, minus accrued  expenses
of  that Series  for the  period by (ii)  the average  number of  shares of that
Series entitled  to  receive  dividends  during the  period  multiplied  by  the
offering  price per share  on the last  day of the  period. Yield quotations for
each Series are presented in Appendix B attached hereto.
 
From time  to time  each Series  may,  as appropriate,  quote fund  rankings  or
reprint  all  or a  portion of  evaluations of  fund performance  and operations
appearing in various independent publications, including but not limited to  the
following:  Money,  Fortune, U.S.  News and  World Report,  Kiplinger's Personal
Finance, The Wall Street Journal, Barron's, Investors Business Daily,  Newsweek,
Financial World, Financial Planning, Investment Advisor, USA Today, Pensions and
Investments,  SmartMoney,  Forbes,  Global  Finance,  Registered Representative,
Institutional Investor,  the  Investment Company  Institute,  Johnson's  Charts,
Morningstar,  Lipper Analytical  Services, Inc., Variable  Annuity Research Data
Service, CDA Wiesenberger, Shearson Lehman and Salomon Bros. Indices,  Ibbotson,
Business Week, Lowry Associates, Media General, Investment Company Data, The New
York Times, Your Money, Strangers Investment Advisor, Financial Planning on Wall
Street,  Standard and Poor's, Individual Investor, THE 100 BEST MUTUAL FUNDS YOU
CAN BUY, by Gordon K. Williamson, Consumer Price Index, and Sanford C. Bernstein
& Co.  Series' performance  may also  be compared  to the  performance of  other
mutual funds tracked by financial or business publications or periodicals.
 
   
From  time to time, a Series may  discuss or quote its current portfolio manager
as well as  other investment personnel,  including such persons'  views on:  the
economy;  securities markets; portfolio securities and their issuers; investment
philosophies, strategies,  techniques  and criteria  used  in the  selection  of
securities  to  be  purchased or  sold  for  the Series;  the  Series' portfolio
holdings; the  investment research  and analysis  process; the  formulation  and
evaluation  of investment recommendations; and  the assessment and evaluation of
credit, interest rate, market and economic risks and similar or related matters.
    
 
The Series  may  also  quote  evaluations  mentioned  in  independent  radio  or
television broadcasts.
 
From  time to time the  Series may use charts and  graphs to illustrate the past
performance of various indices such as those mentioned above.
 
MFS FIRSTS: MFS has a long history of innovations.
 
- -- 1924 -- Massachusetts Investors  Trust is established  as the first  open-end
   mutual fund in America.
 
- -- 1924  -- Massachusetts Investors Trust is the  first mutual fund to make full
   public disclosure of its operations in shareholder reports.
 
- -- 1932 -- One  of the  first internal  research departments  is established  to
   provide in-house analytical capability for an investment management firm.
 
- -- 1933  -- Massachusetts Investors  Trust is the first  mutual fund to register
   under the 1933 Act ("Truth in Securities Act" or "Full Disclosure Act").
 
- -- 1936 --  Massachusetts Investors  Trust is  the first  mutual fund  to  allow
   shareholders  take capital gain distributions  either in additional shares or
   in cash.
 
- -- 1976 --  MFS-Registered Trademark-  Municipal Bond  Fund is  among the  first
   municipal bond funds established.
 
- -- 1979 -- Spectrum becomes the first combination fixed/variable annuity with no
   initial sales charge.
 
- -- 1981  -- MFS-Registered Trademark-  World Governments Fund  is established as
   America's first globally diversified fixed income mutual fund.
 
- -- 1984 -- MFS-Registered  Trademark- Municipal  High Income Fund  is the  first
   mutual   fund  to  seek  high  tax-free  income  from  lower-rated  municipal
   securities.
 
- -- 1986 --  MFS-Registered Trademark-  Managed Sectors  Fund becomes  the  first
   mutual  fund  to  target and  shift  investments among  industry  sectors for
   shareholders.
 
- -- 1986 --  MFS-Registered  Trademark-  Municipal  Income  Trust  is  the  first
   closed-end,  high-yield  municipal bond  fund traded  on  the New  York Stock
   Exchange.
 
                                       24
<PAGE>
- -- 1987 --  MFS-Registered  Trademark- Multimarket  Income  Trust is  the  first
   closed-end,  multimarket  high  income  fund listed  on  the  New  York Stock
   Exchange.
 
- -- 1989 --  MFS  Regatta  becomes America's  first  non-qualified  market  value
   adjusted fixed/variable annuity.
 
- -- 1990 -- MFS-Registered Trademark- World Total Return Fund is the first global
   balanced fund.
 
- -- 1993  --  MFS-Registered Trademark-  World Growth  Fund  is the  first global
   emerging markets fund to offer the expertise of two sub-advisers.
 
- -- 1993 -- MFS becomes money manager of MFS-Registered Trademark- Union Standard
   Trust,  the  first  trust  to  invest  solely  in  companies  deemed  to   be
   union-friendly  by  an  Advisory  Board  of  senior  labor  officials, senior
   managers of companies with significant  labor contracts, academics and  other
   national labor leaders or experts.
 
9.  DESCRIPTION OF SHARES, VOTING RIGHTS AND LIABILITIES
 
The  Trust's Declaration of Trust permits the  Trustees of the Trust to issue an
unlimited number of full and  fractional Shares of Beneficial Interest  (without
par value) of one or more separate series and to divide or combine the shares of
any  series into a greater  or lesser number of  shares without thereby changing
the proportionate  beneficial  interests  in  that  series.  The  Trustees  have
currently  authorized shares of  the twelve series identified  on page 2 hereof.
The Declaration  of  Trust  further  authorizes  the  Trustees  to  classify  or
reclassify  any series of shares into one  or more classes. The Trustees have no
current intention to classify  more than one  class of shares.  Each share of  a
Series  represents an equal proportionate interest  in the assets of the Series.
Upon liquidation of a Series, shareholders  of the Series are entitled to  share
PRO  RATA  in  the  net  assets of  the  Series  available  for  distribution to
shareholders. The Trust reserves the right to create and issue additional series
or classes of shares, in which case  the shares of each class would  participate
equally  in the earnings,  dividends and assets  allocable to that  class of the
particular series.
 
Shareholders are entitled to one  vote for each share held  and may vote in  the
election of Trustees and on other matters submitted to meetings of shareholders.
Although  Trustees are  not elected  annually by  the shareholders, shareholders
have under certain  circumstances the right  to remove one  or more Trustees  in
accordance  with the provisions  of Section 16(c)  of the 1940  Act. No material
amendment may be made to the  Declaration of Trust without the affirmative  vote
of  a majority of the  Trust's shares. Shares have  no pre-emptive or conversion
rights. Shares are  fully paid and  non-assessable. The Trust  may enter into  a
merger  or consolidation, or sell all or substantially all of its assets (or all
or substantially all of  the assets belonging  to any series  of the Trust),  if
approved  by the vote  of the holders  of two-thirds of  the Trust's outstanding
shares voting as a single class, or of the affected series of the Trust, as  the
case  may be, except  that if the  Trustees of the  Trust recommend such merger,
consolidation or sale, the approval by vote of the holders of a majority of  the
Trust's  or the affected  series' outstanding shares  (as defined in "Investment
Restrictions") will be sufficient. The Trust or any series of the Trust may also
be terminated (i) upon liquidation and  distribution of its assets, if  approved
by  the vote of the holders of two-thirds  of its outstanding shares, or (ii) by
the Trustees by written notice to the shareholders of the Trust of the  affected
series. If not so terminated, the Trust will continue indefinitely.
 
The  Trust is an entity of the  type commonly known as a "Massachusetts business
trust." Under Massachusetts law, shareholders of such a trust may, under certain
circumstances, be  held  personally  liable as  partners  for  its  obligations.
However,  the Declaration of Trust contains an express disclaimer of shareholder
liability for acts or obligations of the Trust and provides for  indemnification
and  reimbursement of  expenses out of  Trust property for  any shareholder held
personally liable for  the obligations of  the Trust. The  Declaration of  Trust
also  provides  that  it  shall  maintain  appropriate  insurance  (for example,
fidelity bonding and errors and omissions  insurance) for the protection of  the
Trust,  its  shareholders,  Trustees, officers,  employees  and  agents covering
possible tort or other  liabilities. Thus, the risk  of a shareholder  incurring
financial  loss on account of shareholder  liability is limited to circumstances
in which both inadequate  insurance existed and the  Trust itself was unable  to
meet its obligations.
 
The  Declaration of Trust further provides that obligations of the Trust are not
binding upon the Trustees individually but  only upon the property of the  Trust
and  that the Trustees will not be liable  for any action or failure to act, but
nothing in the Declaration of Trust protects a Trustee against any liability  to
which he would otherwise be subject by reason of willful misfeasance, bad faith,
gross negligence, or reckless disregard of the duties involved in the conduct of
his office.
 
10.  INDEPENDENT AUDITORS AND FINANCIAL STATEMENTS
 
   
Deloitte  & Touche  LLP are  the Trust's  independent auditors,  providing audit
services, tax return preparation, and  assistance and consultation with  respect
to  the  preparation of  filings  with the  SEC.  The Statements  of  Assets and
Liabilities for the MFS Growth Series (currently known as the Value Series), MFS
Strategic Fixed Income Series  and MFS Limited Maturity  Series at December  31,
1995,  the Notes thereto and the  Independent Auditors' Report dated February 2,
1996, have been included in this SAI in reliance upon the report of Deloitte and
Touche LLP, independent certified public  accountants, as experts in  accounting
and auditing. With respect to the Emerging Growth, Research, Growth With Income,
Total  Return, Utilities, High Income, World  Governments, Bond and Money Market
Series, the Portfolio  of Investments  at December  31, 1995,  the Statement  of
Assets and Liabilities at December 31, 1995, the Statement of Operations for the
period  ended December 31, 1995, the Statement  of Changes in Net Assets for the
period ended December 31, 1995 (and for  the period ended December 31, 1994  for
the  World  Governments  Series),  the Notes  to  Financial  Statements  and the
Independent Auditors' Report, each of which is included in the Annual Reports to
shareholders of these Series,  are incorporated by reference  into this SAI  and
have  been so incorporated in reliance upon the report of Deloitte & Touche LLP,
independent certified public accountants, as experts in accounting and auditing.
Copies of these Annual Reports accompany this SAI.
    
 
                                       25
<PAGE>
                          MFS VARIABLE INSURANCE TRUST
                      STATEMENTS OF ASSETS AND LIABILITIES
                               DECEMBER 31, 1995
   
<TABLE>
<CAPTION>
                                                                                                                    MFS
                                                                                                                 STRATEGIC
                                                                                                       MFS         FIXED
                                                                                                     GROWTH*      INCOME
                                                                                                     SERIES       SERIES
                                                                                                   -----------  -----------
<S>                                                                                                <C>          <C>
Assets:
  Cash...........................................................................................   $   7,646    $   7,646
  Deferred organization expenses.................................................................       5,985        5,985
                                                                                                   -----------  -----------
    Total assets.................................................................................   $  13,631    $  13,631
 
Liabilities:
  Accrued expenses...............................................................................       5,031        5,031
                                                                                                   -----------  -----------
    Net assets...................................................................................   $   8,600    $   8,600
                                                                                                   -----------  -----------
                                                                                                   -----------  -----------
Net Asset Value, Redemption Price and Offering Price Per Share of Beneficial Interest
  (860 shares outstanding for each Series).......................................................  $    10.00   $    10.00
                                                                                                   -----------  -----------
                                                                                                   -----------  -----------
 
<CAPTION>
 
                                                                                                       MFS
                                                                                                     LIMITED
                                                                                                    MATURITY
                                                                                                     SERIES
                                                                                                   -----------
<S>                                                                                                <C>
Assets:
  Cash...........................................................................................   $   6,772
  Deferred organization expenses.................................................................       5,985
                                                                                                   -----------
    Total assets.................................................................................   $  12,757
Liabilities:
  Accrued expenses...............................................................................       4,157
                                                                                                   -----------
    Net assets...................................................................................   $   8,600
                                                                                                   -----------
                                                                                                   -----------
Net Asset Value, Redemption Price and Offering Price Per Share of Beneficial Interest
  (860 shares outstanding for each Series).......................................................  $    10.00
                                                                                                   -----------
                                                                                                   -----------
<FN>
 
NOTES:
 
(1)  The MFS Variable Insurance Trust (the "Trust") was organized on February 1,
    1994  as  a  business   trust  under  the  laws   of  The  Commonwealth   of
    Massachusetts.  The Trust currently  consists of twelve  series of shares or
    funds (the "Series"): MFS  Emerging Growth Series,  MFS Growth* Series,  MFS
    Research Series, MFS Growth with Income Series, MFS Total Return Series, MFS
    Utilities  Series, MFS High Income Series, MFS World Governments Series, MFS
    Strategic Fixed Income Series, MFS Bond Series, MFS Limited Maturity  Series
    and  MFS Money  Market Series. The  MFS Growth* Series,  MFS Strategic Fixed
    Income Series and MFS Limited Maturity Series have been inactive since  that
    date  except  for matters  relating to  their  organization and  the Trust's
    registration as an investment  company under the  Investment Company Act  of
    1940  and  the  sale of  860  shares  of beneficial  interest  (the "initial
    shares") of each such Series to Massachusetts Financial Services Company.
(2) Organization expenses  are being deferred  and will be  amortized over  five
    years  beginning with the commencement  of investment operations. The amount
    paid by any  Series on  any redemption by  Massachusetts Financial  Services
    Company,  or  any current  holder  of any  Series'  initial shares,  will be
    reduced by the  pro rata  portion of any  unamortized organization  expenses
    which  the number of  initial shares redeemed  bears to the  total number of
    initial shares outstanding immediately prior to such redemption.
*  Currently known as the Value Series.
</TABLE>
    
 
                                       26
<PAGE>
                          INDEPENDENT AUDITORS' REPORT
 
   
To the Board of Trustees of MFS Variable Insurance Trust and Shareholders of MFS
Growth* Series, MFS Strategic Fixed Income Series and MFS Limited Maturity
Series:
    
 
   
We  have audited  the accompanying statements  of assets and  liabilities of MFS
Growth* Series,  MFS Strategic  Fixed  Income Series  and MFS  Limited  Maturity
Series  (the "Series") (each a  series of the MFS  Variable Insurance Trust (the
"Trust"))  as  of  December  31,  1995.  These  financial  statements  are   the
responsibility  of the Trust's  management. Our responsibility  is to express an
opinion on these financial statements based on our audits.
    
 
We  conducted  our  audits  in  accordance  with  generally  accepted   auditing
standards.  Those standards require that we plan and perform the audit to obtain
reasonable assurance about whether the statements of assets and liabilities  are
free  of material  misstatement. An audit  includes examining, on  a test basis,
evidence supporting the amounts and disclosures  in the statement of assets  and
liabilities. 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 audits of the  statements
of assets and liabilities provide a reasonable basis for our opinion.
 
In our opinion, such statements of assets and liabilities present fairly, in all
material  respects, the financial position of each of the Series at December 31,
1995 in conformity with generally accepted accounting principles.
 
Deloitte & Touche LLP
Boston, Massachusetts
February 2, 1996
 
   
* Currently known as the Value Series
    
 
                                       27
<PAGE>
                                                                      APPENDIX A
 
TRUSTEE COMPENSATION TABLE
 
   
<TABLE>
<CAPTION>
                                                                                   TRUSTEE FEES FROM
                                                                                      ALL SERIES
                                                                                      OTHER THAN
                                                                                      THE VALUE,
                                                                                    STRATEGIC FIXED
                                                                                        INCOME
                                                                                      AND LIMITED       TOTAL TRUSTEE
                                                                                       MATURITY         FEES FROM THE
NAME OF TRUSTEE                                                                       SERIES (1)       FUND COMPLEX (2)
- --------------------------------------------------------------------------------  -------------------  ----------------
<S>                                                                               <C>                  <C>
A. Keith Brodkin................................................................              N/A                N/A
William R. Gutow................................................................  $         5,175      $       15,858
Nelson J. Darling...............................................................            5,175              15,858
<FN>
 
NOTES:
 
(1) For fiscal year ended December 31, 1995.
(2)   For  calendar  year  ended  December  31,  1995.  All  Trustees  receiving
    compensation served as Trustees of 17 funds advised by MFS (having aggregate
    net assets at December 31, 1995 of approximately $306 million).
</TABLE>
    
 
                                      A-1
<PAGE>
                                                                      APPENDIX B
 
                            PERFORMANCE INFORMATION
 
All performance quotations are for the period ended December 31, 1995.
 
<TABLE>
<CAPTION>
                                                                           AGGREGATE ANNUAL
                                                                            TOTAL RETURNS       ACTUAL 30-DAY   30-DAY
                                                                        ----------------------      YIELD        YIELD
                                                                                     LIFE OF     (INCLUDING    (WITHOUT
                                SERIES                                   1 YEAR      SERIES       WAIVERS)     WAIVERS)
- ----------------------------------------------------------------------  ---------  -----------  -------------  ---------
 
<S>                                                                     <C>        <C>          <C>            <C>
Emerging Growth.......................................................     --        17.41(1)%           --           --
Research..............................................................     --        10.62(2)            --           --
Growth With Income....................................................     --         6.64(3)            --           --
Total Return..........................................................     --        27.34(4)            --           --
Utilities.............................................................     --        33.94(4)            --           --
High Income...........................................................     --         5.25(5)            --           --
World Governments.....................................................      14.38%    9.62(6)          5.14%        4.87%
Bond..................................................................     --         3.02(7)            --           --
Money Market..........................................................     --         4.37(4)          4.77(8)
</TABLE>
 
- ------------------------
 1 From the commencement of investment operations on July 24, 1995.
 2 From the commencement of investment operations on July 26, 1995.
 3 From the commencement of investment operations on October 9, 1995.
 4 From the commencement of investment operations on January 3, 1995.
 5 From the commencement of investment operations on July 26, 1995.
 6 Average  Annual Total  Rate of  Return from  the commencement  of  investment
operations on June 14, 1994.
 7 From the commencement of investment operations on October 24, 1995.
 8 For the seven-day period ended December 31, 1995.
 
                                      B-1
<PAGE>
INVESTMENT ADVISER
Massachusetts Financial Services Company
500 Boylston Street, Boston, MA 02116
(617) 954-5000
(800) 637-8730
 
DISTRIBUTOR
MFS Fund Distributors, Inc.
500 Boylston Street, Boston, MA 02116
(617) 954-5000
CUSTODIAN
Investors Bank & Trust Company
89 South Street, Boston, Massachusetts 02110
 
DIVIDEND DISBURSING AGENT
State Street Bank and Trust Company
225 Franklin Street, Boston, MA 02110
 
SHAREHOLDER SERVICING AGENT
MFS Service Center, Inc.
500 Boylston Street, Boston, MA 02116
Toll free: (800) 637-8730
MAILING ADDRESS
P.O. Box 1400, Boston, MA 02104-9985
INDEPENDENT AUDITORS
Deloitte & Touche LLP
125 Summer Street, Boston, MA 02110
 
MFS-REGISTERED TRADEMARK- VARIABLE
INSURANCE TRUST-SM-
500 Boylston Street
Boston, MA 02116
 
    [LOGO]
<PAGE>


                                     PART C


ITEM 24.    (A)  FINANCIAL STATEMENTS AND EXHIBITS

   
            ALL SERIES (EXCEPT MFS GROWTH SERIES*, MFS WORLD GOVERNMENTS SERIES,
            MFS STRATEGIC FIXED INCOME SERIES AND MFS LIMITED MATURITY SERIES)
    

                 FINANCIAL STATEMENTS INCLUDED IN PARTS A AND B:

                 INCLUDED IN PART A OF THIS REGISTRATION STATEMENT:
                   Financial Highlights for:

                   the MFS Total Return Series, MFS Utilities and MFS Money
                   Market Series for the period from commencement of investment
                   operations on January 3, 1995 to December 31, 1995;

                   the MFS Emerging Growth Series for the period from
                   commencement of investment operations on July 24, 1995 to
                   December 31, 1995;

                   the MFS Research Series and MFS High Income Series for the
                   period from commencement of investment operations on July 26,
                   1995 to December 31, 1995;

                   the MFS Growth With Income Series for the period from
                   commencement of investment operations on October 9, 1995 to
                   December 31, 1995; and

                   the MFS Bond Series for the period from commencement of
                   investment operations on October 24, 1995 to December 31,
                   1995.

   
                 INCLUDED IN PART B OF THIS REGISTRATION STATEMENT:
                   At December 31, 1995:
                        Portfolio of Investments**
                        Statement of Assets and Liabilities**
    

   
                   Statement of Operations** and Statement of Changes in Net
                   Assets** for:
    

                   the MFS Total Return Series, MFS Utilities and MFS Money
                   Market Series for the period from commencement of investment
                   operations on January 3, 1995 to December 31, 1995;

                   the MFS Emerging Growth Series for the period from
                   commencement of investment operations on July 24, 1995 to
                   December 31, 1995;

<PAGE>


                   the MFS Research Series and MFS High Income Series for the
                   period from commencement of investment operations on July 26,
                   1995 to December 31, 1995;

                   the MFS Growth With Income Series for the period from
                   commencement of investment operations on October 9, 1995 to
                   December 31, 1995; and

                   the MFS Bond Series for the period from commencement of
                   investment operations on October 24, 1995 to December 31,
                   1995.

            MFS WORLD GOVERNMENTS SERIES

                 FINANCIAL STATEMENTS INCLUDED IN PARTS A AND B:

                 INCLUDED IN PART A OF THIS REGISTRATION STATEMENT:

                   For the period from commencement of investment operations on
                   June 10, 1994 to December 31, 1994 and for the year ended
                   December 31, 1995:
                        Financial Highlights

                 INCLUDED IN PART B OF THIS REGISTRATION STATEMENT:

   
                   At December 31, 1995:
                        Portfolio of Investments**
                        Statement of Assets and Liabilities**
    
   

                        For the year ended December 31, 1995:
                             Statement of Operations**
    
   

                        For the period from commencement of investment
                        operations on June 10, 1994 to December 31, 1994 and for
                        the year ended December 31, 1995:
                             Statement of Changes in Net Assets**
    

            MFS GROWTH SERIES*, MFS STRATEGIC FIXED INCOME SERIES AND MFS
            LIMITED MATURITY SERIES

                 FINANCIAL STATEMENTS INCLUDED IN PARTS A AND B:

                 INCLUDED IN PART A OF THIS REGISTRATION STATEMENT:
                   None

<PAGE>


                 INCLUDED IN PART B OF THIS REGISTRATION STATEMENT:

                   At December 31, 1995:
                        Statement of Assets and Liabilities
                        Opinion of Independent Auditors

________________________
   
*   Currently known as the Value Series.
**  Incorporated by reference to the High Income, Emerging Growth, Research,
    Money Market, Utilities and Growth With Income Series' Annual Report to
    Shareholders each dated December 31, 1995 filed with the SEC via EDGAR on
    March 4, 1996 and to the World Governments, Bond and Total Return Series'
    Annual Reports to Shareholders each dated December 31, 1995 filed with the
    SEC via EDGAR on March 6, 1996.
    

            (b)  EXHIBITS

                    1   (a)  Declaration of Trust, dated January 28, 1994.  (2)

                        (b)  Amendment to Declaration of Trust - Designation of
                             Series of Shares dated January 31, 1994.  (2)

                        (c)  Amendment to Declaration of Trust - Redesignation
                             of Series, dated June 1, 1995.  (2)

   
                        (d)  Amendment to Declaration of Trust - Redesignation
                             of Series, dated April 25, 1996; filed herewith.
    

                    2        By-Laws, dated January 28, 1994.  (2)

                    3        Not Applicable.

                    4        Not Applicable.

                    5        Investment Advisory Agreement by and between
                             Registrant and Massachusetts Financial Services
                             Company, dated April 14, 1994.  (2)

                    6        Distribution Agreement between Registrant and
                             Massachusetts Investors Services, Inc., dated April
                             14, 1994.  (2)

                    7        Not Applicable.

                    8        Custodian Agreement between Registrant and
                             Investors Bank & Trust Company, dated April 14,
                             1994.  (2)

                    9   (a)  Shareholder Servicing Agent Agreement between
                             Registrant and MFS Service Center, dated April 14,
                             1994.  (2)

<PAGE>

                        (b)  Dividend Disbursing Agency Agreement between
                             Registrant and State Street Bank and Trust, dated
                             April 14, 1994.  (2)

                   10        Opinion and Consent of Counsel filed with
                             Registrant's Rule 24f-2 Notice for fiscal year
                             ended December 31, 1995 on February 28, 1996.

                   11        Consent of Deloitte & Touche LLP; filed herewith.

                   12        Not Applicable.

                   13        Investment Representation Letter.  (2)

                   14        Not Applicable.

                   15        Not Applicable.

                   16        Schedule of Computation for Performance Quotations
                             - Average Annual Total Rate of Return, Aggregate
                             Total Rate of Return and Standardized Yield.  (1)

                   17        Financial Data Schedule for each operational Series
                             of the Trust; filed herewith.

                   18        Not Applicable.

                   Power of Attorney dated August 12, 1994.  (2)
____________________________
   (1)      Incorporated by reference to MFS Municipal Series Trust (File Nos.
2-92915 and 811-4096) Post-Effective Amendment No. 26 filed with the SEC via
EDGAR on February 22, 1995.
   (2)      Incorporated by reference to Registrant's Post-Effective Amendment
No. 4 filed with the SEC via EDGAR on October 26, 1995.

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

            Not applicable.

ITEM 26.    NUMBER OF HOLDERS OF SECURITIES

            MFS EMERGING GROWTH SERIES

                  (1)                                         (2)
            TITLE OF CLASS                          NUMBER OF RECORD HOLDERS
   

            Shares of Beneficial Interest                     17
                  (without par value)               (as of April 30,1996)
    

<PAGE>
             MFS GROWTH SERIES (CURRENTLY KNOWN AS THE VALUE SERIES)

                  (1)                                         (2)
            TITLE OF CLASS                          NUMBER OF RECORD HOLDERS

   
            Shares of Beneficial Interest                     4
                  (without par value)               (as of April 30,1996)
    

            MFS RESEARCH SERIES

                  (1)                                         (2)
            TITLE OF CLASS                          NUMBER OF RECORD HOLDERS

   
            Shares of Beneficial Interest                     11
                  (without par value)               (as of April 30,1996)
    

            MFS GROWTH WITH INCOME SERIES

                  (1)                                         (2)
            TITLE OF CLASS                          NUMBER OF RECORD HOLDERS

   
            Shares of Beneficial Interest                     8
                  (without par value)               (as of April 30,1996)
    

            MFS TOTAL RETURN SERIES

                  (1)                                         (2)
            TITLE OF CLASS                          NUMBER OF RECORD HOLDERS

   
            Shares of Beneficial Interest                     17
                  (without par value)               (as of April 30,1996)
    

            MFS UTILITIES SERIES

                  (1)                                         (2)
            TITLE OF CLASS                          NUMBER OF RECORD HOLDERS

   
            Shares of Beneficial Interest                     14
                  (without par value)               (as of April 30,1996)
    

<PAGE>


            MFS HIGH INCOME SERIES

                  (1)                                         (2)
            TITLE OF CLASS                          NUMBER OF RECORD HOLDERS

   
            Shares of Beneficial Interest                     10
                  (without par value)               (as of April 30,1996)
    

            MFS WORLD GOVERNMENTS SERIES

                  (1)                                         (2)
            TITLE OF CLASS                          NUMBER OF RECORD HOLDERS

   
            Shares of Beneficial Interest                     22
                  (without par value)               (as of April 30,1996)
    

            MFS STRATEGIC FIXED INCOME SERIES

                  (1)                                         (2)
            TITLE OF CLASS                          NUMBER OF RECORD HOLDERS

   
            Shares of Beneficial Interest                     4
                  (without par value)               (as of April 30,1996)
    

            MFS BOND SERIES

                  (1)                                         (2)
            TITLE OF CLASS                          NUMBER OF RECORD HOLDERS

   
            Shares of Beneficial Interest                     8
                  (without par value)               (as of April 30,1996)
    

            MFS LIMITED MATURITY SERIES

                  (1)                                         (2)
            TITLE OF CLASS                          NUMBER OF RECORD HOLDERS

   
            Shares of Beneficial Interest                     4
                  (without par value)               (as of April 30,1996)
    

<PAGE>

            MFS MONEY MARKET SERIES

                  (1)                                         (2)
            TITLE OF CLASS                          NUMBER OF RECORD HOLDERS

   
            Shares of Beneficial Interest                     8
                  (without par value)               (as of April 30,1996)
    

ITEM 27.    INDEMNIFICATION

            Reference is hereby made to (a) Section 5.3 of the Registrant's
Declaration of Trust; and (b) Section 9 of the Shareholder Servicing Agent
Agreement between the Registrant and MFS Service Center, Inc.

            The Trustees and officers of the Registrant and the personnel of the
Registrant's investment adviser and distributor will be insured as of the
effective date of this Registration Statement under an errors and omissions
liability insurance policy.  The Registrant and its officers are also insured
under the fidelity bond required by Rule 17g-1 under the Investment Company Act
of 1940, as amended.

ITEM 28.  BUSINESS AND OTHER CONNECTIONS OF INVESTMENT ADVISER

          MFS serves as investment adviser to the following open-end Funds
comprising the MFS Family of Funds:  Massachusetts Investors Trust,
Massachusetts Investors Growth Stock Fund, MFS Growth Opportunities Fund, MFS
Government Securities Fund, MFS Government Limited Maturity Fund, MFS Series
Trust I (which has eight series: MFS Managed Sectors Fund, MFS Cash Reserve
Fund, MFS World Asset Allocation Fund, MFS Aggressive Growth Fund, MFS Research
Growth and Income Fund, MFS Core Growth Fund, MFS Equity Income Fund and MFS
Special Opportunities Fund), MFS Series Trust II (which has four series: MFS
Emerging Growth Fund, MFS Capital Growth Fund, MFS Intermediate Income Fund and
MFS Gold & Natural Resources Fund), MFS Series Trust III (which has two series:
MFS High Income Fund and MFS Municipal High Income Fund), MFS Series Trust IV
(which has four series: MFS Money Market Fund, MFS Government Money Market Fund,
MFS Municipal Bond Fund and MFS OTC Fund), MFS Series Trust V (which has two
series: MFS Total Return Fund and MFS Research Fund), MFS Series Trust VI (which
has three series: MFS World Total Return Fund, MFS Utilities Fund and MFS World
Equity Fund), MFS Series Trust VII (which has two series: MFS World Governments
Fund and MFS Value Fund), MFS Series Trust VIII (which has two series: MFS
Strategic Income Fund and MFS World Growth Fund), MFS Series Trust IX (which has
three series: MFS Bond Fund, MFS Limited Maturity Fund and MFS Municipal Limited
Maturity Fund), MFS Series Trust X (which has four series:  MFS Government
Mortgage Fund, MFS/Foreign & Colonial Emerging Markets Equity Fund, MFS/Foreign
& Colonial International Growth Fund and MFS/Foreign & Colonial International
Growth and Income Fund), and MFS Municipal Series Trust (which has 16 series:
MFS Alabama Municipal Bond Fund, MFS Arkansas Municipal Bond Fund, MFS
California Municipal Bond Fund, MFS Florida Municipal Bond Fund, MFS Georgia
Municipal Bond Fund, MFS Maryland Municipal Bond Fund, MFS Massachusetts
Municipal Bond Fund, MFS Mississippi Municipal Bond Fund, MFS New York Municipal
Bond Fund, MFS North Carolina Municipal Bond Fund, MFS Pennsylvania Municipal
Bond Fund, MFS South Carolina Municipal Bond Fund, MFS Tennessee Municipal Bond
Fund, MFS Virginia

<PAGE>

Municipal Bond Fund, MFS West Virginia Municipal Bond Fund and MFS Municipal
Income Fund) (the "MFS Funds").  The principal business address of each of the
aforementioned Funds is 500 Boylston Street, Boston, Massachusetts 02116.

          MFS also serves as investment adviser of the following no-load, open-
end Funds:  MFS Institutional Trust ("MFSIT") (which has seven series), MFS
Variable Insurance Trust ("MVI") (which has twelve series) and MFS Union
Standard Trust ("UST") (which has two series).  The principal business address
of each of the aforementioned Funds is 500 Boylston Street, Boston,
Massachusetts 02116.

          In addition, MFS serves as investment adviser to the following closed-
end Funds:  MFS Municipal Income Trust, MFS Multimarket Income Trust, MFS
Government Markets Income Trust, MFS Intermediate Income Trust, MFS Charter
Income Trust and MFS Special Value Trust (the "MFS Closed-End Funds").  The
principal business address of each of the aforementioned Funds is 500 Boylston
Street, Boston, Massachusetts 02116.

          Lastly, MFS serves as investment adviser to MFS/Sun Life Series Trust
("MFS/SL"), Sun Growth Variable Annuity Funds, Inc. ("SGVAF"), Money Market
Variable Account, High Yield Variable Account, Capital Appreciation Variable
Account, Government Securities Variable Account, World Governments Variable
Account, Total Return Variable Account and Managed Sectors Variable Account.
The principal business address of each is One Sun Life Executive Park, Wellesley
Hills, Massachusetts 02181.

          MFS International Ltd. ("MIL"), a limited liability company organized
under the laws of the Republic of Ireland and a subsidiary of MFS, whose
principal business address is 41-45 St. Stephen's Green, Dublin 2, Ireland,
serves as investment adviser to and distributor for MFS International Fund
(which has four portfolios: MFS International Funds-U.S. Equity Fund, MFS
International Funds-U.S. Emerging Growth Fund, MFS International Funds-Global
Governments Fund, MFS International Funds - U.S. Dollar Reserve Fund and MFS
International Funds-Charter Income Fund) (the "MIL Funds").  The MIL Funds are
organized in Luxembourg and qualify as an undertaking for collective investments
in transferable securities (UCITS).  The principal business address of the MIL
Funds is 47, Boulevard Royal, L-2449 Luxembourg.

          MIL also serves as investment adviser to and distributor for MFS
Meridian U.S. Government Bond Fund, MFS Meridian Charter Income Fund, MFS
Meridian Global Government Fund, MFS Meridian U.S. Emerging Growth Fund, MFS
Meridian Global Equity Fund, MFS Meridian Limited Maturity Fund, MFS Meridian
World Growth Fund, MFS Meridian Money Market Fund, MFS Meridian World Total
Return Fund, MFS Meridian U.S. Equity Fund and MFS Meridian Research Fund
(collectively the "MFS Meridian Funds").  Each of the MFS Meridian Funds is
organized as an exempt company under the laws of the Cayman Islands.  The
principal business address of each of the MFS Meridian Funds is P.O. Box 309,
Grand Cayman, Cayman Islands, British West Indies.

          MFS International (U.K.) Ltd. ("MIL-UK"), a private limited company
registered with the Registrar of Companies for England and Wales whose current
address is 4 John Carpenter Street, London, England ED4Y 0NH, is involved
primarily in marketing and investment research activities with respect to
private clients and the MIL Funds and the MFS Meridian Funds.

<PAGE>

          MFS Fund Distributors, Inc. ("MFD"), a wholly owned subsidiary of MFS,
serves as distributor for the MFS Funds, MVI, UST and MFSIT.

          Clarendon Insurance Agency, Inc. ("CIAI"), a wholly owned subsidiary
of MFS, serves as distributor for certain life insurance and annuity contracts
issued by Sun Life Assurance Company of Canada (U.S.).

          MFS Service Center, Inc. ("MFSC"), a wholly owned subsidiary of MFS,
serves as shareholder servicing agent to the MFS Funds, the MFS Closed-End
Funds, MFSIT, MVI and UST.

          MFS Asset Management, Inc. ("AMI"), a wholly owned subsidiary of MFS,
provides investment advice to substantial private clients.

          MFS Retirement Services, Inc. ("RSI"), a wholly owned subsidiary of
MFS, markets MFS products to retirement plans and provides administrative and
record keeping services for retirement plans.

          MFS

          The Directors of MFS are A. Keith Brodkin, Jeffrey L. Shames, Arnold
D. Scott, John R. Gardner and John D. McNeil.  Mr. Brodkin is the Chairman, Mr.
Shames is the President, Mr. Scott is a Senior Executive Vice President and
Secretary, Bruce C. Avery, William S. Harris, William W. Scott, Jr., and
Patricia A. Zlotin are Executive Vice Presidents, Stephen E. Cavan is a Senior
Vice President, General Counsel and an Assistant Secretary, Joseph W. Dello
Russo is a Senior Vice President, Chief Financial Officer and Treasurer, Robert
T. Burns is a Vice President, Associate General Counsel and an Assistant
Secretary of MFS, and Thomas B. Hastings is a Vice President and Assistant
Treasurer.

          MASSACHUSETTS INVESTORS TRUST
          MASSACHUSETTS INVESTORS GROWTH STOCK FUND
          MFS GROWTH OPPORTUNITIES FUND
          MFS GOVERNMENT SECURITIES FUND
          MFS SERIES TRUST I
          MFS SERIES TRUST V
          MFS SERIES TRUST VI
          MFS SERIES TRUST X
          MFS GOVERNMENT LIMITED MATURITY FUND

          A. Keith Brodkin is the Chairman and President, Stephen E. Cavan is
the Secretary, W. Thomas London is the Treasurer, James O. Yost, Vice President
of MFS, is the Assistant Treasurer, James R. Bordewick, Jr., Vice President and
Associate General Counsel of MFS, is the Assistant Secretary.

<PAGE>

          MFS SERIES TRUST II

          A. Keith Brodkin is the Chairman and President, Leslie J. Nanberg,
Senior Vice President of MFS, is a Vice President, Stephen E. Cavan is the
Secretary, W. Thomas London is the Treasurer, James O. Yost is the Assistant
Treasurer, and James R. Bordewick, Jr., is the Assistant Secretary.

          MFS GOVERNMENT MARKETS INCOME TRUST
          MFS INTERMEDIATE INCOME TRUST

          A. Keith  Brodkin is the Chairman and President, Patricia A. Zlotin,
Executive Vice President of MFS and Leslie J. Nanberg, Senior Vice President of
MFS, are Vice Presidents, Stephen E. Cavan is the Secretary, W. Thomas London is
the Treasurer, James O. Yost is the Assistant Treasurer, and James R. Bordewick,
Jr., is the Assistant Secretary.

          MFS SERIES TRUST III

          A. Keith Brodkin is the Chairman and President, James T. Swanson,
Robert J. Manning, Cynthia M. Brown and Joan S. Batchelder, Senior Vice
Presidents of MFS, Bernard Scozzafava, Vice President of MFS, and Matthew
Fontaine, Assistant Vice President of MFS, are Vice Presidents, Sheila Burns-
Magnan and Daniel E. McManus, Assistant Vice Presidents of MFS, are Assistant
Vice Presidents, Stephen E. Cavan is the Secretary, W. Thomas London is the
Treasurer, James O. Yost is the Assistant Treasurer, and James R. Bordewick,
Jr., is the Assistant Secretary.

          MFS SERIES TRUST IV
          MFS SERIES TRUST IX

          A. Keith Brodkin is the Chairman and President, Robert A. Dennis and
Geoffrey L. Kurinsky, Senior Vice Presidents of MFS, are Vice Presidents,
Stephen E. Cavan is the Secretary, W. Thomas London is the Treasurer, James O.
Yost is the Assistant Treasurer and James R. Bordewick, Jr., is the Assistant
Secretary.

          MFS SERIES TRUST VII

          A. Keith Brodkin is the Chairman and President, Leslie J. Nanberg and
Stephen C. Bryant, Senior Vice Presidents of MFS, are Vice Presidents, Stephen
E. Cavan is the Secretary, W. Thomas London is the Treasurer, James O. Yost is
the Assistant Treasurer and James R. Bordewick, Jr., is the Assistant Secretary.

          MFS SERIES TRUST VIII

          A. Keith Brodkin is the Chairman and President, Jeffrey L. Shames,
Leslie J. Nanberg, Patricia A. Zlotin, James T. Swanson and John D. Laupheimer,
Jr., Vice President of MFS, are Vice Presidents, Stephen E. Cavan is the
Secretary, W. Thomas London is the Treasurer, James O. Yost is the Assistant
Treasurer and James R. Bordewick, Jr., is the Assistant Secretary.

<PAGE>

          MFS MUNICIPAL SERIES TRUST

          A. Keith Brodkin is the Chairman and President, Cynthia M. Brown and
Robert A. Dennis are Vice Presidents, David B. Smith, Geoffrey L. Schechter and
David R. King, Vice Presidents of MFS, are Vice Presidents, Daniel E. McManus,
Assistant Vice President of MFS, is an Assistant Vice President, Stephen E.
Cavan is the Secretary, W. Thomas London is the Treasurer, James O. Yost is the
Assistant Treasurer and James R. Bordewick, Jr., is the Assistant Secretary.

          MFS VARIABLE INSURANCE TRUST
          MFS UNION STANDARD TRUST
          MFS INSTITUTIONAL TRUST

          A. Keith Brodkin is the Chairman and President, Stephen E. Cavan is
the Secretary, W. Thomas London is the Treasurer, James O. Yost is the Assistant
Treasurer and James R. Bordewick, Jr., is the Assistant Secretary.

          MFS MUNICIPAL INCOME TRUST

          A. Keith Brodkin is the Chairman and President, Cynthia M. Brown and
Robert J. Manning are Vice Presidents, Stephen E. Cavan is the Secretary, W.
Thomas London is the Treasurer, James O. Yost, is the Assistant Treasurer and
James R. Bordewick, Jr., is the Assistant Secretary.

          MFS MULTIMARKET INCOME TRUST
          MFS CHARTER INCOME TRUST

          A. Keith Brodkin is the Chairman and President, Patricia A. Zlotin,
Leslie J. Nanberg and James T. Swanson are Vice Presidents, Stephen E. Cavan is
the Secretary, W. Thomas London is the Treasurer, James O. Yost, Vice President
of MFS, is the Assistant Treasurer and James R. Bordewick, Jr., is the Assistant
Secretary.

          MFS SPECIAL VALUE TRUST

          A. Keith Brodkin is the Chairman and President, Jeffrey L. Shames,
Patricia A. Zlotin and Robert J. Manning are Vice Presidents, Stephen E. Cavan
is the Secretary, W. Thomas London is the Treasurer, and James O. Yost, is the
Assistant Treasurer and James R. Bordewick, Jr., is the Assistant Secretary.

          SGVAF

          W. Thomas London is the Treasurer.

          MIL

          A. Keith Brodkin is a Director and the Chairman, Arnold D. Scott and
Jeffrey L. Shames are Directors, Ziad Malek, Senior Vice President of MFS, is
the President, Thomas J.

<PAGE>

Cashman, Jr., a Senior Vice President of MFS, is a Senior Vice President,
Stephen E. Cavan is a Director, Senior Vice President and the Clerk, James R.
Bordewick, Jr. is a Director, Vice President and an Assistant Clerk, Robert T.
Burns is an Assistant Clerk, Joseph W. Dello Russo is the Treasurer and Thomas
B. Hastings is the Assistant Treasurer.

          MIL-UK

          A. Keith Brodkin is a Director and the Chairman, Arnold D. Scott,
Jeffrey L. Shames, and James R. Bordewick, Jr., are Directors, Stephen E. Cavan
is a Director and the Secretary, Ziad Malek is the President, James E. Russell
is the Treasurer, and Robert T. Burns is the Assistant Secretary.

          MIL FUNDS

          A. Keith Brodkin is the Chairman, President and a Director, Richard B.
Bailey, John A. Brindle, Richard W. S. Baker and William F. Waters are
Directors, Stephen E. Cavan is the Secretary, W. Thomas London is the Treasurer,
James O. Yost is the Assistant Treasurer and James R. Bordewick, Jr., is the
Assistant Secretary, and Ziad Malek is a Senior Vice President.

          MFS MERIDIAN FUNDS

          A. Keith Brodkin is the Chairman, President and a Director, Richard B.
Bailey, John A. Brindle, Richard W. S. Baker, Arnold D. Scott, Jeffrey L. Shames
and William F. Waters are Directors, Stephen E. Cavan is the Secretary, W.
Thomas London is the Treasurer, James R. Bordewick, Jr., is the Assistant
Secretary, James O. Yost is the Assistant Treasurer, and Ziad Malek is a Senior
Vice President.

          MFD

          A. Keith Brodkin is the Chairman and a Director, Arnold D. Scott and
Jeffrey L. Shames are Directors, William W. Scott, Jr., an Executive Vice
President of MFS, is the President, Stephen E. Cavan is the Secretary, Robert T.
Burns is the Assistant Secretary, Joseph W. Dello Russo is the Treasurer, and
Thomas B. Hastings is the Assistant Treasurer.

          CIAI

          A. Keith Brodkin is the Chairman and a Director, Arnold D. Scott and
Jeffrey L. Shames are Directors, Cynthia Orcott is President, Bruce C. Avery is
the Vice President, Joseph W. Dello Russo is the Treasurer, Thomas B. Hastings
is the Assistant Treasurer, Stephen E. Cavan is the Secretary, and Robert T.
Burns is the Assistant Secretary.

          MFSC

          A. Keith Brodkin is the Chairman and a Director, Arnold D. Scott and
Jeffrey L. Shames are Directors, Joseph A. Recomendes, a Senior Vice President
of MFS, is Vice Chairman and a Director, Janet A. Clifford is the Executive Vice
President, Joseph W. Dello Russo is the Treasurer, Thomas B. Hastings is the
Assistant Treasurer, Stephen E. Cavan is the Secretary, and Robert T. Burns is
the Assistant Secretary.

<PAGE>

          AMI

          A. Keith Brodkin is the Chairman and a Director, Jeffrey L. Shames,
and Arnold D. Scott are Directors, Thomas J. Cashman, Jr., is the President and
a Director, Leslie J. Nanberg is a Senior Vice President, a Managing Director
and a Director, George F. Bennett, Carol A. Corley, John A. Gee, Brianne Grady
and Kevin R. Parke  are Senior Vice Presidents and Managing Directors, Joseph W.
Dello Russo is the Treasurer, Thomas B. Hastings is the Assistant Treasurer and
Robert T. Burns is the Secretary.

          RSI

          William W. Scott, Jr. and Bruce C. Avery are Directors, Arnold D.
Scott is the Chairman and a Director, Joseph W. Dello Russo is the Treasurer,
Thomas B. Hastings is the Assistant Treasurer, Stephen E. Cavan is the
Secretary, Robert T. Burns is the Assistant Secretary and Sharon A. Brovelli and
Martin E. Beaulieu are Senior Vice Presidents.

          In addition, the following persons, Directors or officers of MFS, have
the affiliations indicated:

            A. Keith Brodkin           Director, Sun Life Assurance Company of
                                        Canada (U.S.), One Sun Life Executive
                                        Park, Wellesley Hills, Massachusetts
                                        Director, Sun Life Insurance and Annuity
                                        Company of New York, 67 Broad Street,
                                        New York, New York

            John R. Gardner            President and a Director, Sun Life
                                        Assurance Company of Canada, Sun Life
                                        Centre, 150 King Street West, Toronto,
                                        Ontario, Canada (Mr. Gardner is also an
                                        officer and/or Director of various
                                        subsidiaries and affiliates of Sun Life)

            John D. McNeil             Chairman, Sun Life Assurance Company of
                                        Canada, Sun Life Centre, 150 King Street
                                        West, Toronto, Ontario, Canada (Mr.
                                        McNeil is also an officer and/or
                                        Director of various subsidiaries and
                                        affiliates of Sun Life)

            Joseph W. Dello Russo      Director of Mutual Fund Operations, The
                                        Boston Company, Exchange Place, Boston,
                                        Massachusetts (until August, 1994)

ITEM 29.    DISTRIBUTORS

            (a)  Reference is hereby made to Item 28 above.

<PAGE>

            (b)  Reference is hereby made to Item 28 above; the principal
business address of each of these persons is 500 Boylston Street, Boston,
Massachusetts 02116.

            (c)  Not applicable.

ITEM 30.    LOCATION OF ACCOUNTS AND RECORDS

            The accounts and records of the Registrant are located, in whole or
in part, at the office of the Registrant and the following locations:

                 NAME                                 ADDRESS

            Massachusetts Financial Services     500 Boylston Street
                 Company (investment adviser)    Boston, MA  02116

            MFS Fund Distributors, Inc.          500 Boylston Street
                 (distributor)                   Boston, MA  02116

            Investors Bank & Trust               89 South Street
                 Company (custodian)             Boston, MA  02111

            MFS Service Center, Inc.             500 Boylston Street
                 (transfer agent)                Boston, MA  02116

            The Registrant's corporate documents are kept by the Registrant at
its offices.  Portfolio brokerage orders, other purchase orders, reasons for
brokerage allocation and lists of persons authorized to transact business for
the Registrant are kept by Massachusetts Financial Services Company at 500
Boylston Street, Boston, Massachusetts 02116.  Shareholder account records are
kept by MFS Service Center, Inc. at 500 Boylston Street, Boston, Massachusetts
02116.  Transaction journals, receipts for the acceptance and delivery of
securities and cash, ledgers and trial balances are kept by Investors Bank &
Trust Company, 89 South Street, Boston, MA  02111.

ITEM 31.    MANAGEMENT SERVICES

            Not applicable.

ITEM 32.    UNDERTAKINGS

            (a)  Not applicable.

            (b)  Not Applicable.

            (c)  Registrant undertakes to furnish each person to whom a
prospectus is delivered with a copy of its latest annual report to shareholders
upon request and without charge.

            (d)  Insofar as indemnification for liability arising under the
Securities Act of 1933 may be permitted to trustees, officers and controlling
persons of the Registrant pursuant to

<PAGE>

the provisions set forth in Item 27 of this Part C, or otherwise, the Registrant
has been advised that in the opinion of the Securities and Exchange Commission
such indemnification is against public policy as expressed in the Act and is,
therefore, unenforceable.  In the event that a claim for indemnification against
such liabilities (other than the payment by the Registrant of expenses incurred
or paid by a trustee, officer or controlling person of the Registrant in the
successful defense of any action, suit or proceeding) is asserted by such
director, officer or controlling person in connection with the Securities being
Registered, the Registrant will, unless in the opinion of its counsel the matter
has been settled by controlling precedent, submit to a court of appropriate
jurisdiction the question whether such indemnification by it is against public
policy as expressed in the Act and will be governed by the final adjudication of
such issue.

<PAGE>
                                 INDEX TO EXHIBITS


EXHIBIT NO.                   DESCRIPTION OF EXHIBIT

     1   (d)        Amendment to Declaration of Trust - Redesignation of Series,
                      dated April 25, 1996.

     11             Consent of Deloitte & Touche, LLP.

     17             Financial Data Schedule for each operational Series of the
                      Trust.

<PAGE>
[LOGO]                                                       Annual Report for
THE FIRST NAME IN MUTUAL FUNDS                                      Year Ended
                                                             December 31, 1995


MFS(R) EMERGING GROWTH SERIES
A Series of MFS(R) Variable Insurance Trust

<PAGE>
MFS(R) EMERGING GROWTH SERIES
A SERIES OF MFS(R)  VARIABLE INSURANCE TRUST

TRUSTEES
A. Keith Brodkin*
Chairman and President

Nelson J. Darling, Jr.
Trustee, Eastern Enterprises
(diversified holding company)

William R. Gutow
Vice Chairman,
Capitol Entertainment
(Blockbuster Video Franchise)

PORTFOLIO MANAGER
John W. Ballen*

TREASURER
W. Thomas London*

ASSISTANT TREASURER
James O. Yost*

SECRETARY
Stephen E. Cavan*

ASSISTANT SECRETARY
James R. Bordewick, Jr.*

INVESTMENT ADVISER
Massachusetts Financial Services Company
500 Boylston Street
Boston, MA 02116-3741

DISTRIBUTOR
MFS Fund Distributors, Inc.
500 Boylston Street
Boston, MA 02116-3741

SHAREHOLDER SERVICE CENTER
MFS Service Center, Inc.
P.O. Box 1400
Boston, MA 02107-9906

For additional information, contact your financial adviser.

CUSTODIAN
Investors Bank & Trust Company

AUDITORS
Deloitte & Touche LLP


*Affiliated with the Investment Adviser
<PAGE>
Dear Contract Owner:
An environment of declining interest rates and a favorable outlook for inflation
helped establish a pattern of positive performance in both fixed-income and
equity markets around the world during the past 12 months. Yields on many
fixed-income securities continued to decline throughout the year, and bond
prices rose in response to these declines. At the same time, lower interest
rates and strong corporate earnings reports through most of the year helped the
prices of many stocks to rise over the period, producing strong returns. For the
12 months ended December 31, 1995, the U.S. stock market, as measured by the
Standard & Poor's 500 Composite Index (the S&P 500), a popular, unmanaged index
of common stock performance, returned +37.53%. All of the series in the Trust
which invest in equity securities participated in this favorable performance and
achieved positive total returns.

U.S. Outlook
Moderate but sustainable growth was the hallmark of the economic expansion's
fifth year, although some signs of sluggishness were evident late in the year.
Recent retail sales, for example, have been disappointing, in part because of
rising levels of consumer debt. In addition, growth is not expected to get much
help from the manufacturing sector as order flows from manufacturers have
moderated. Export activity, meanwhile, is also expected to remain modest as
continued weakness abroad limits demand for many U.S. goods. However, the
Federal Reserve Board's consistent and, so far, successful efforts to fight
inflation seem to be giving consumers and businesses enough longer-term
confidence to help maintain modest growth in real (adjusted for inflation) gross
domestic product into 1996.

Global Outlook
A pattern of slow to moderate growth and low and controlled inflation remains a
dominant theme in major industrialized countries, including the United States.
While the recent recovery of the dollar against the German mark and the Japanese
yen has added some strength to the economies of Europe and Japan, the outlook is
for sluggish economic growth, in the near term at least. And although moves by
central banks in Germany and Japan to lower interest rates have helped stimulate
domestic demand, many industrial companies in these countries are still
struggling to compete in a global marketplace in which the prices of their
products are less competitively priced. On the positive side, this does mean
little to no inflationary pressure in these countries, and we believe that this,
combined with further reductions in interest rates, could help provide a
foundation for stronger economic growth in the long run. Also, we believe that
many of the cost-cutting measures taken by companies in these countries over the
past few years will ultimately provide earnings leverage when economic growth
improves. Inflation in most overseas economies remains in a downward trend,
providing fixed-income investors with opportunities for relatively attractive
real rates of interest, possibly accompanied by moderate price appreciation.
While the dollar continues to represent a sound store of long-term value, its
relative strength in the near term is being restrained by the persistent U.S.
current-account deficit.

Bond Markets
Given the recent signs of economic weakness, prospects for the Federal Reserve
Board's further decreasing short-term interest rates are good. Long-term rates,
meanwhile, moved noticeably downward in the latter months of 1995 in
anticipation of more modest fourth-quarter growth with continued low inflation.
While there were some increases in commodity prices early in the year, companies
found it difficult to pass these on at the consumer level as they continue to
fight for market share. Additionally, unit labor costs remain under control and
seem to be growing at a pace that is near or below the ongoing inflation rate.
Thus, with long-term U.S. government bonds yielding approximately 6% in an
environment of 2% to 3% inflation, real rates of return in the fixed-income
markets remain relatively attractive.

In world bond markets, slowing economic growth, low inflation, and declining
official interest rates helped result in solid performance during the past 12
months. European governments are engaged in multi-year programs to reduce their
budget deficits and debt levels. These programs are positive for bonds in that
lower government spending tends to reduce inflationary pressures and lower
issuance of government debt reduces supply pressures on the bond market. In the
Japanese market, powerful deflationary forces have supported a drop in yields to
historically low levels. We now feel this process may be drawing to an end,
given a reversal of priorities at the central bank from fighting inflation,
which is now non-existent, to offsetting the downward spiral of deflation. The
high returns of the U.S. bond market, as measured by the Lehman Brothers
Government Bond Index, have been echoed in other U.S. dollar-bloc markets,
including Australia, New Zealand, and Canada, all of which saw positive
performance over the past year according to Salomon Brothers. Currently, the
Australian market offers significantly higher yields than the U.S. market, and,
we believe, represents good value. As long as the outlook for U.S. bonds remains
positive, these related markets could outperform the U.S. market.

Stock Markets
After some volatility late in the third quarter, the stock market continued to
strengthen. Although many companies reported solid third-quarter results, there
was some weakness in the earnings of retail, financial services and even some
technology companies. However, a slowdown in earnings may be a positive
development if it is an indication that the economy is not overheating and
inflation is under control. While we see a deceleration of corporate earnings as
the inevitable consequence of traditional business cycles, we remain encouraged
by the high absolute level of profitability among U.S. companies. Also, many
companies' increasing emphasis on cost containment and growing use of technology
have helped keep them highly competitive and reasonably profitable. Looking
ahead, we believe that a stabilizing interest rate environment, coupled with
reasonable earnings reports, could justify current market valuations.

Comments from the portfolio manager of this Series are presented on the
following page. We appreciate your support and welcome any questions or comments
you may have.

Respectfully,



/s/ A. Keith Brodkin                                  /s/ John W. Ballen
- ----------------------                                ------------------
A. Keith Brodkin                                      John W. Ballen
Chairman and President                                Portfolio Manager

January 12, 1996
<PAGE>
MFS(R) EMERGING GROWTH SERIES

The Emerging Growth Series commenced investment operations on July 24, 1995, and
provided a total return of +17.41% from that date through December 31, 1995.
This compares to a +6.14% return for the Russell 2000 Index for the same
period.* The Series' performance benefited from strong appreciation in the stock
prices of many of its holdings in the technology sector. The technology stocks
responded to strong earnings growth for semiconductor, hardware, software,
networking and processing companies. Oracle Systems (database software), System
Software (manufacturing application software), and Informix (database software
and tools) reported very strong earnings and their stock prices responded
positively, while Sybase (database software) and BMC Software (systems software)
also contributed to the positive performance of the Series. Other strong
performers included networking stocks such as Cabletron and Bay Networks. The
stocks of our semiconductor companies responded positively to their very strong
earnings reports. Compuware (system software) and Autodesk (computer-aided
design) reported disappointing earnings and have been disappointing stocks. We
maintain positions in these companies because we believe their stock prices will
rebound from their currently depressed levels.

The performance of our leisure stocks was particularly helpful. HFS, the
nation's largest franchiser of hotels and real estate companies, saw its stock
price more than double this year. Strong earnings gains and acquisitions such as
Century 21 assured investors of its future growth prospects.

We established major positions in the health care sector to take advantage of
what we believe to be depressed prices caused by investor confusion concerning
the effect of lower Medicare reimbursement levels. Even though Medicare
reimbursement has been cut for many companies, we believe well-managed companies
will adjust their costs accordingly. We also believe health maintenance
organizations (HMO's) will provide many of the solutions to the high level of
the nation's health care costs.

In 1995, the stock market moved higher as companies reported
better-than-expected earnings. We believe this trend of investors favoring
companies with strong earnings will continue into 1996 and could benefit the
share prices of our companies if they can deliver those strong earnings. Our
largest sector concentration continues to be technology. While earnings gains
may not be as strong in 1996 as they were in 1995, we believe this sector will
still have the strongest earnings gains of any group in 1996. We are also
positive on the healthcare service and consumer sectors. Both groups performed
poorly in 1995, and we believe their stock prices to be depressed. We believe
that the healthcare cost-containment companies will ultimately benefit from the
cost-reduction initiatives in Washington. We believe the consumer sector is
poised to respond very positively to only a small positive change in consumer
spending.

We believe the companies in the portfolio are particularly well-suited to
benefit from technology-driven productivity enhancements. Obviously, our
technology companies are providing the tools to the rest of the economy. Our
other companies are using technology to increase their productivity and lower
their costs. We remain optimistic that the progress for our portfolio companies
will be rewarded by investors in 1996.
<PAGE>
PORTFOLIO MANAGER PROFILE

John Ballen joined the MFS Research Department in 1984. A graduate of Harvard
College, the University of New South Wales in Australia and Stanford University,
he was named Investment Officer in 1986, Vice President - Investments in 1987,
Director of Research in 1988, Senior Vice President in 1990, Director of Equity
Portfolio Management in 1993 and Chief Equity Officer in 1995. He has managed
the MFS Emerging Growth Series since its inception in July 1995.

PERFORMANCE SUMMARY

The information below illustrates the performance of the MFS Emerging Growth
Series shares in comparison to various market indicators.

AGGREGATE TOTAL RETURNS                                              7/24/95* -
                                                                    12/31/95
===============================================================================
MFS Emerging Growth Series                                          +17.41%
- -------------------------------------------------------------------------------
Standard & Poor's 500 Composite Index+\1/                           +10.76%
- -------------------------------------------------------------------------------
Russell 2000 Index++\1/                                             + 6.14%
- -------------------------------------------------------------------------------

All results are historical and, therefore, are not an indication of future
results. The investment return and principal value of an investment in the
product will vary with changes in market conditions, and shares, when redeemed,
may be worth more or less than their original cost. All Series results reflect
the applicable expense subsidy which is explained in the Notes to Financial
Statements. Had the subsidy not been in effect, the results would have been less
favorable. All Series results do not reflect expenses that would be imposed by
insurance company separate accounts.

  *Commencement of investment operations; benchmark comparisons are from July
   31, 1995.
  +Standard & Poor 500 Index is an  unmanaged  but  commonly  used  measure of
   common stock total return performance. It is not possible to invest in an
   index.
 ++The Russell 2000 Index is unmanaged and comprised of 2,000 of the smallest
   U.S.-domiciled company common stocks (on the basis of capitalization) which
   are traded in the U.S. on the New York Stock Exchange (NYSE), American Stock
   Exchange (AMEX) and NASDAQ. It is not possible to invest in an index.
\1/Source: Lipper Analytical Services, Inc.
<PAGE>
PORTFOLIO OF INVESTMENTS - December 31, 1995

<TABLE>
<CAPTION>
Common Stocks - 86.9%
=========================================================================================================
Issuer                                                                             Shares           Value
- ---------------------------------------------------------------------------------------------------------
<S>                                                                                 <C>     <C>          
U.S. Stocks - 83.6%
   Airlines - 0.1%
      Eagle USA Airfreight, Inc.*                                                     100   $       2,625
      Midwest Express Holdings, Inc.*                                                 100           2,775
                                                                                            -------------
                                                                                            $       5,400
- ---------------------------------------------------------------------------------------------------------
   Apparel and Textiles - 0.3%
      Eastbay, Inc.*                                                                  200   $       3,950
      Nine West Group, Inc.*                                                          200           7,500
                                                                                            -------------
                                                                                            $      11,450
- ---------------------------------------------------------------------------------------------------------
   Biotechnology - 0.9%
      Guidant Corp.*                                                                  700   $      29,575
      Myriad Genetics, Inc.*                                                          100           3,263
                                                                                            -------------
                                                                                            $      32,838
- ---------------------------------------------------------------------------------------------------------
   Business Machines - 0.3%
      Affiliated Computer Co.*                                                        300   $      11,250
- ---------------------------------------------------------------------------------------------------------
   Business Services - 14.5%
      ADT Ltd.*                                                                     2,800   $      42,000
      APAC Teleservices, Inc.*                                                        100           3,338
      Accustaff, Inc.*                                                              1,000          44,000
      BISYS Group, Inc.*                                                              700          21,525
      CUC International, Inc.*                                                      2,000          68,250
      Ceridian Corp.*                                                               1,600          66,000
      Computer Sciences, Inc.*                                                        400          28,100
      Corestaff, Inc.*                                                                100           3,650
      DST System, Inc.*                                                             1,700          48,450
      Franklin Quest Co.*                                                           1,100          21,450
      Global DirectMail Corp.*                                                        400          11,000
      Learning Tree International, Inc.*                                            2,300          35,938
      Mail-Well, Inc.*                                                                200           2,450
      National Data Corp.                                                           1,200          29,700
      Paychex, Inc.                                                                   200           9,975
      Personnel Group of America, Inc.*                                             1,000          14,625
      Reynolds & Reynolds Co., "A"                                                    300          11,663
      Romac International, Inc.*                                                      100           2,350
      SPS Transaction Services, Inc.*                                                 900          26,663
      Technology Solutions Co.*                                                     1,800          35,100
      Transaction Systems Architects, Inc., "A"*                                    1,000          33,750
                                                                                            -------------
                                                                                            $     559,977
- ---------------------------------------------------------------------------------------------------------
   Chemicals - 0.1%
      Arcadian Corp.                                                                  100   $       1,938
- ---------------------------------------------------------------------------------------------------------
   Computer Software - 0.3%
      Hummingbird Communications*                                                     300   $      12,150
- ---------------------------------------------------------------------------------------------------------
   Computer Software - Personal Computers - 2.9%
      Autodesk, Inc.                                                                1,985   $      67,986
      Electronic Arts, Inc.*                                                          100           2,612
      First Data Corp.                                                                450          30,094
      Spectrum Holobyte, Inc.*                                                        300           1,950
      Symantec Corp.*                                                                 300           6,975
      Visio Corp.*                                                                    100           2,825
                                                                                            -------------
                                                                                            $     112,442
- ---------------------------------------------------------------------------------------------------------
<PAGE>
<CAPTION>
PORTFOLIO OF INVESTMENTS - continued

Common Stocks - continued
=========================================================================================================
Issuer                                                                             Shares           Value
- ---------------------------------------------------------------------------------------------------------
<S>                                                                                 <C>     <C>          
U.S. Stocks - continued
   Computer Software - Systems - 18.7%
      Adobe Systems, Inc.                                                           1,100   $      68,200
      BMC Software, Inc.*                                                           2,350         100,462
      Black Box Corp.*                                                                100           1,637
      Cadence Design Systems, Inc.*                                                 2,650         111,300
      Checkfree Corp.*                                                                100           2,150
      Citrix Systems, Inc.*                                                           100           3,250
      Computer Associates International, Inc.                                       1,100          62,562
      Computer Management Sciences, Inc.*                                             100           1,775
      Compuware Corp.*                                                                900          16,650
      DataWorks Corp.*                                                                100           1,262
      Enterprise Systems, Inc.*                                                       100           3,050
      Harbinger Corp.*                                                                100           2,300
      Informix Corp.*                                                                 800          24,000
      Network Appliance, Inc.*                                                        100           4,012
      Objective Systems Integrators, Inc.*                                            100           5,475
      Oracle Systems Corp.*                                                         3,800         161,025
      Premenos Technology Corp.*                                                      100           2,637
      Softquad International, Inc.*                                                   300           1,594
      Summit Medical System, Inc.*                                                    100           2,150
      Sybase, Inc.*                                                                 2,800         100,800
      System Software Associates, Inc.                                              1,800          39,150
      Vantive Corp.*                                                                  100           2,250
      Verity, Inc.*                                                                   100           4,425
                                                                                            -------------
                                                                                            $     722,116
- ---------------------------------------------------------------------------------------------------------
   Consumer Goods and Services - 1.9%
      Blyth Industries, Inc.*                                                         200   $       5,900
      Coleman Co., Inc.*                                                              100           3,513
      Department 56, Inc.*                                                            300          11,513
      META Group, Inc.*                                                               100           3,063
      Service Corp. International                                                     500          22,000
      Sola International, Inc.*                                                       100           2,525
      Tyco International Ltd.                                                         700          24,938
                                                                                            -------------
                                                                                            $      73,452
- ---------------------------------------------------------------------------------------------------------
   Electrical Equipment - 0.1%
      UCAR International, Inc.*                                                       100   $       3,375
- ---------------------------------------------------------------------------------------------------------
   Electronics - 1.6%
      Ade Corp.*                                                                      100   $       1,450
      Cyberoptics Corp.*                                                              100           3,975
      Euphonix, Inc.*                                                                 100             850
      LSI Logic Corp.*                                                              1,200          39,300
      Linear Technology Corp.                                                         300          11,775
      Xilinx, Inc.*                                                                   200           6,100
                                                                                            -------------
                                                                                            $      63,450
- ---------------------------------------------------------------------------------------------------------
   Entertainment - 2.4%
      Grand Casinos, Inc.*                                                            750   $      17,438
      Harrah's Entertainment, Inc.*                                                 2,500          60,625
      Infinity Broadcasting Corp., "A"*                                               400          14,900
      Wireless One, Inc.*                                                             100           1,650
                                                                                            -------------
                                                                                            $      94,613
- ---------------------------------------------------------------------------------------------------------
<PAGE>
<CAPTION>
PORTFOLIO OF INVESTMENTS - continued

Common Stocks - continued
=========================================================================================================
Issuer                                                                             Shares           Value
- ---------------------------------------------------------------------------------------------------------
<S>                                                                                 <C>     <C>          
U.S. Stocks - continued
   Financial Institutions - 0.2%
      Allmerica Financial Corp.                                                       100   $       2,700
      Donaldson, Lufkin & Jenrette, Inc.                                              100           3,125
      Union Acceptance Corp., "A"*                                                    100           1,400
                                                                                            -------------
                                                                                            $       7,225
- ---------------------------------------------------------------------------------------------------------
   Food and Beverage Products - 0.1%
      Redhook Ale Brewery, Inc.*                                                      100   $       2,600
- ---------------------------------------------------------------------------------------------------------
   Insurance - 0.6%
      Amerin Corp.*                                                                   400   $      10,700
      Compdent Corp.*                                                                 200           8,300
      LaSalle Re Holdings Ltd.*                                                       100           2,288
      Prudential Reinsurance Holdings, Inc.                                           100           2,338
                                                                                            -------------
                                                                                            $      23,626
- ---------------------------------------------------------------------------------------------------------
   Medical and Health Products - 0.7%
      Medisense, Inc.*                                                                400   $      12,650
      Neuromedical Systems, Inc.*                                                     500          10,063
      Orthofix International N.V.*                                                    300           2,213
      Parexel International Corp.*                                                    100           3,325
                                                                                            -------------
                                                                                            $      28,251
- ---------------------------------------------------------------------------------------------------------
   Medical and Health Technology and Services - 14.3%
      AHI Healthcare Systems, Inc.*                                                   100   $         575
      Community Care of America, Inc.*                                                100           1,050
      Community Health Systems*                                                     1,000          35,625
      Foundation Health Corp.*                                                      1,000          43,000
      Health Management Assoc., Inc.*                                               1,000          26,125
      Healthsource, Inc.*                                                           1,400          50,400
      Healthsouth Corp.*                                                            1,000          29,125
      IDX Systems Corp.*                                                            1,200          41,700
      Lincare Holdings, Inc.*                                                         300           7,500
      Mid-Atlantic Medical Services, Inc.*                                            800          19,400
      Norland Medical Systems, Inc.*                                                  100           2,325
      Owen Healthcare, Inc.*                                                          100           2,763
      Pacificare Health Systems, Inc., "A"*                                           300          26,100
      Pacificare Health Systems, Inc., "B"*                                           500          43,500
      Pediatrix Medical Group, Inc.*                                                  100           2,750
      St. Jude Medical, Inc.*                                                         400          17,200
      Schein (Henry), Inc.*                                                           100           2,950
      Sterling Healthcare Group*                                                      100           1,062
      Surgical Care Affiliates, Inc.                                                  700          23,800
      Total Renal Care Holdings, Inc.*                                                100           2,950
      United Dental Care, Inc.*                                                       100           4,125
      United Healthcare Corp.                                                       2,600         170,300
                                                                                            -------------
                                                                                            $     554,325
- ---------------------------------------------------------------------------------------------------------
   Oils - 0.7%
      Union Pacific Research Group, Inc.                                            1,000   $      25,375
- ---------------------------------------------------------------------------------------------------------
   Pollution Control - 0.3%
      Sanfill, Inc.*                                                                  400   $      13,350
- ---------------------------------------------------------------------------------------------------------
   Real Estate Investment Trusts - 0.2%
      NHP, Inc.*                                                                      400   $       7,400
- ---------------------------------------------------------------------------------------------------------
<PAGE>
<CAPTION>
Portfolio of Investments - continued

Common Stocks - continued
=========================================================================================================
Issuer                                                                            Shares            Value
- ---------------------------------------------------------------------------------------------------------
<S>                                                                                 <C>     <C>          
U.S. Stocks - continued
   Restaurants and Lodging - 8.0%
      Applebee's International, Inc.*                                              1,800   $       40,950
      Bristol Hotel Co.                                                              100            2,437
      Buffets, Inc.*                                                               1,000           13,750
      Extended Stay America, Inc.*                                                   100            2,750
      HFS, Inc.*                                                                   2,250          183,937
      IHOP Corp.*                                                                    700           18,200
      Promus Hotel Corp.*                                                          1,000           22,250
      Renaissance Hotel Group N.V.*                                                  900           22,950
      Sonic Corp.*                                                                   100            1,900
                                                                                           --------------
                                                                                           $      309,124
- ---------------------------------------------------------------------------------------------------------
   Special Products and Services - 0.1%
      Central Parking Corp.                                                          100   $        2,875
- ---------------------------------------------------------------------------------------------------------
   Steel - 0.1%
      Carbide/Graphite Group, Inc.*                                                  100   $        1,437
      Citation Corp.*                                                                100            1,200
                                                                                           --------------
                                                                                           $        2,637
- ---------------------------------------------------------------------------------------------------------
   Stores - 5.2%
      Boise Cascade Office Products*                                                 100   $        4,275
      Consolidated Stores Corp.*                                                     200            4,350
      Corporate Express, Inc.*                                                       600           18,075
      Dollar Tree Stores, Inc.*                                                      100            2,475
      General Nutrition Cos., Inc.*                                                1,000           23,000
      Hollywood Entertainment Corp.*                                                 800            6,700
      MSC Industrial Direct Co., Inc., "A"*                                          100            2,750
      Micro Warehouse, Inc.*                                                       1,000           43,250
      Movie Gallery, Inc.*                                                           400           12,200
      Office Depot, Inc.*                                                          3,000           59,250
      Officemax, Inc.*                                                               800           17,900
      Renters Choice, Inc.*                                                          100            1,375
      US Office Products Co.*                                                        300            6,825
                                                                                           --------------
                                                                                           $      202,425
- ---------------------------------------------------------------------------------------------------------
   Telecommunications - 7.2%
      Bay Networks, Inc.*                                                          1,400   $       57,575
      Cabletron Systems, Inc.*                                                     1,200           97,200
      ECI Telecommunications Limited Designs                                         500           11,406
      Tel-Save Holdings, Inc.*                                                       600            8,325
      Tellabs, Inc.*                                                                 300           11,100
      Teltrend, Inc.*                                                                100            4,675
      U.S. Robotics Corp.*                                                           350           30,712
      Westell Technologies, Inc., "A"*                                               100            2,512
      Worldcom, Inc.*                                                              1,600           56,400
                                                                                           --------------
                                                                                           $      279,905
- ---------------------------------------------------------------------------------------------------------
   Utilities - Telephone - 1.8%
      Frontier Corp.                                                               1,000   $       30,000
      MCI Communications Corp.                                                     1,500           39,187
                                                                                           --------------
                                                                                           $       69,187
- ---------------------------------------------------------------------------------------------------------
Total U.S. Stocks                                                                          $    3,232,756
- ---------------------------------------------------------------------------------------------------------
<PAGE>
PORTFOLIO OF INVESTMENTS - continued

<CAPTION>
Common Stocks - continued
=========================================================================================================
Issuer                                                                             Shares           Value
- ---------------------------------------------------------------------------------------------------------
<S>                                                                                 <C>     <C>          
Foreign Stocks - 3.3%
   Canada - 1.2%
      Biochem Pharma, Inc. (Medical and Health Products)*                             550   $      22,069
      PC Docs Group International, Inc. (Computer Software - Systems)*              1,300          23,237
                                                                                              -----------
                                                                                            $      45,306
- ---------------------------------------------------------------------------------------------------------
   Ireland - 0.1%
      CBT Group PLC (Computer Software)*                                              100   $       5,300
- ---------------------------------------------------------------------------------------------------------
   Italy - 1.5%
      De Rigo SPA, ADR (Stores)*                                                      700   $      15,925
      Fila Holdings SPA, ADR (Apparel and Textiles)                                   900          40,950
                                                                                            -------------
                                                                                            $      56,875
- ---------------------------------------------------------------------------------------------------------
   Netherlands - 0.1%
      Gucci Group NV (Apparel and Textiles)*                                          100   $       3,887
- ---------------------------------------------------------------------------------------------------------
   South Korea - 0.4%
      Korea Mobile Telecommunications, ADR*##                                         400   $      17,800
- ---------------------------------------------------------------------------------------------------------
Total Foreign Stocks                                                                        $     129,168
- ---------------------------------------------------------------------------------------------------------
Total Common Stocks (Identified Cost, $3,188,205)                                           $   3,361,924
- ---------------------------------------------------------------------------------------------------------

<CAPTION>
Short-Term Obligations - 16.8%
=========================================================================================================
                                                                         Principal Amount
                                                                            (000 Omitted)
- ---------------------------------------------------------------------------------------------------------
<S>                                                                                  <C>    <C>          
   Federal Home Loan Mortgage Corp., due 1/02/96 - 1/22/96                           $450   $     449,016
   Federal National Mortgage Assn., due 1/17/96                                       200         199,514
- ---------------------------------------------------------------------------------------------------------
Total Short-Term Obligations, at Amortized Cost                                             $     648,530
- ---------------------------------------------------------------------------------------------------------
Total Investments (Identified Cost, $3,836,735)                                             $   4,010,454
Other Assets, Less Liabilities - (3.7)%                                                          (141,824)
=========================================================================================================
Net Assets - 100.0%                                                                         $   3,868,630
- ---------------------------------------------------------------------------------------------------------

  *Non-income producing security.
## SEC Rule 144A restriction.
</TABLE>

See notes to financial statements
<PAGE>
FINANCIAL STATEMENTS

<TABLE>
<CAPTION>
Statement of Assets and Liabilities
========================================================================================================
December 31, 1995
- --------------------------------------------------------------------------------------------------------
<S>                                                                                        <C>          
Assets:
   Investments, at value (identified cost, $3,836,735)                                     $   4,010,454
   Cash                                                                                           13,806
   Receivable for investments sold                                                                 5,650
   Receivable for Series shares sold                                                              42,072
   Dividends receivable                                                                              311
   Receivable from investment adviser                                                              7,162
   Deferred organization expenses                                                                  8,388
                                                                                           -------------
         Total assets                                                                      $   4,087,843
                                                                                           -------------
Liabilities:
   Payable for investments purchased                                                       $     203,591
   Payable for Series shares reacquired                                                              838
   Payable to affiliates for management fee                                                          237
   Accrued expenses and other liabilities                                                         14,547
                                                                                           -------------
         Total liabilities                                                                 $     219,213
                                                                                           -------------
Net assets                                                                                 $   3,868,630
                                                                                           =============
Net assets consist of:
   Paid-in capital                                                                         $   3,694,911
   Unrealized appreciation on investments                                                        173,719
                                                                                           -------------
         Total                                                                             $   3,868,630
                                                                                           =============
Shares of beneficial interest outstanding                                                        339,022
                                                                                           =============
Net asset value, offering price and redemption price per share
   (net assets of $3,868,630 / 339,022 shares
   of beneficial interest outstanding)                                                        $11.41
                                                                                           =============
</TABLE>

See notes to financial statements
<PAGE>
FINANCIAL STATEMENTS - continued

<TABLE>
<CAPTION>
Statement of Operations
========================================================================================================
Period Ended December 31, 1995*
- --------------------------------------------------------------------------------------------------------
<S>                                                                                        <C>          
Net investment income:
   Income -
      Interest                                                                             $       8,766
      Dividends                                                                                      462
                                                                                           -------------
         Total investment income                                                           $       9,228
                                                                                           -------------
   Expenses -
      Management fee                                                                       $       6,262
      Trustees' compensation                                                                         708
      Shareholder servicing agent fee                                                                281
      Auditing fees                                                                                9,911
      Printing                                                                                     4,000
      Amortization of organization expenses                                                          800
      Custodian fee                                                                                  470
      Legal fees                                                                                     127
      Miscellaneous                                                                                1,664
                                                                                           -------------
         Total expenses                                                                    $      24,223
      Reduction of expenses by investment adviser                                                (15,659)
      Fees paid indirectly                                                                          (213)
                                                                                           -------------
         Net expenses                                                                      $       8,351
                                                                                           -------------
            Net investment income                                                          $         877
                                                                                           -------------
Realized and unrealized gain on investments:
   Realized gain (identified cost basis) on investment transactions                        $      81,576
   Change in unrealized appreciation on investments                                              173,719
                                                                                           -------------
      Net realized and unrealized gain on investments                                      $     255,295
                                                                                           -------------
         Increase in net assets from operations                                            $     256,172
                                                                                           =============

*For the period from the commencement of investment operations, July 24, 1995 to December 31, 1995.
</TABLE>

See notes to financial statements
<PAGE>
FINANCIAL STATEMENTS - continued

<TABLE>
<CAPTION>
Statement of Changes in Net Assets
========================================================================================================
Period Ended December 31, 1995*
- --------------------------------------------------------------------------------------------------------
<S>                                                                                        <C>          
Increase (decrease) in net assets:
From operations -
   Net investment income                                                                   $         877
   Net realized gain on investments                                                               81,576
   Net unrealized gain on investments                                                            173,719
                                                                                           -------------
      Increase in net assets from operations                                               $     256,172
                                                                                           -------------
Distributions declared to shareholders -
   From net investment income                                                              $        (877)
   From net realized gain on investments                                                         (81,576)
   In excess of net investment income                                                               (283)
   Tax return of capital                                                                         (21,847)
                                                                                           -------------
      Total distributions declared to shareholders                                         $    (104,583)
                                                                                           -------------
Series share (principal) transactions -
   Net proceeds from sale of shares                                                        $   5,564,342
   Net asset value of shares issued to shareholders
      in reinvestment of distributions                                                           104,583
   Cost of shares reacquired                                                                  (1,960,484)
                                                                                           -------------
         Increase in net assets from Series share transactions                             $   3,708,441
                                                                                           -------------
               Total increase in net assets                                                $   3,860,030
Net assets:
   At beginning of period                                                                          8,600
                                                                                           -------------
   At end of period                                                                        $   3,868,630
                                                                                           =============

*For the period from the commencement of investment operations, July 24, 1995 to December 31, 1995.
</TABLE>

See notes to financial statements
<PAGE>
FINANCIAL STATEMENTS - continued

<TABLE>
<CAPTION>
Financial Highlights
========================================================================================================
Period Ended December 31, 1995*
- --------------------------------------------------------------------------------------------------------
<S>                                                                                        <C>          
Per share data (for a share outstanding throughout each period):
Net asset value - beginning of period                                                      $       10.00
                                                                                           -------------
Income from investment operations# -
   Net investment income{S}                                                                $        0.01
   Net realized and unrealized gain on investments                                                  1.74
                                                                                           -------------
      Total from investment operations                                                     $        1.75
                                                                                           -------------
Less distributions declared to shareholders -
   From net investment income                                                              $       (0.01)
   From net realized gain on investments                                                           (0.26)
   Tax return of capital                                                                           (0.07)
                                                                                           -------------
      Total distributions declared to shareholders                                         $       (0.34)
                                                                                           -------------
Net asset value - end of period                                                            $       11.41
                                                                                           =============
Total return 17.41%++
Ratios (to average net assets)/Supplemental data{S}:
   Expenses                                                                                         1.00%+
   Net investment income                                                                            0.10%+
Portfolio turnover                                                                                    73%
Net assets at end of period (000 omitted)                                                  $       3,869

<FN>
  *For the period from the commencement of investment operations, July 24, 1995 to December 31, 1995.
  +Annualized.
 ++Not annualized.
  #Per share data is based on average shares outstanding.
{S}The adviser voluntarily agreed to maintain the expenses of the Series at not more than 1.00% of
   average daily net assets. To the extent actual expenses were over these limitations, the net
   investment loss per share and the ratios would have been:
</FN>

<S>                                                                                        <C>          
       Net investment loss                                                                 $    (0.18)
       Ratios (to average net assets):
          Expenses                                                                               2.91 %+
          Net investment loss                                                                   (1.78)%+
</TABLE>

See notes to financial statements
<PAGE>
NOTES TO FINANCIAL STATEMENTS

(1) Business and Organization
MFS Emerging Growth Series (the Series) is a diversified series of MFS Variable
Insurance Trust (the Trust) which is comprised of the following twelve series:
MFS Bond Series, MFS Emerging Growth Series, MFS Growth Series, MFS Growth with
Income Series, MFS High Income Series, MFS Limited Maturity Series, MFS Money
Market Series, MFS Research Series, MFS Strategic Fixed Income Series, MFS Total
Return Series, MFS Utilities Series and MFS World Governments Series. The Trust
is organized as a Massachusetts business trust and is registered under the
Investment Company Act of 1940, as amended, as an open-end management investment
company.

The shareholders of each Series of the Trust are separate accounts of insurance
companies which offer variable annuity and/or life insurance products. The
Series was seeded on or about February 1, 1994, but remained inactive until the
current period. The commencement of investment operations took place on July 24,
1995. As of December 31, 1995 there were ten shareholders in the Series.

(2) Significant Accounting Policies
Investment Valuations - Equity securities listed on securities exchanges or
reported through the NASDAQ system are valued at last sale prices. Unlisted
equity securities or listed equity securities for which last sale prices are not
available are valued at last quoted bid prices. Short-term obligations, which
mature in 60 days or less, are valued at amortized cost, which approximates
market value. Securities for which there are no such quotations or valuations
are valued at fair value as determined in good faith by or at the direction of
the Trustees.

Repurchase Agreements - The Series may enter into repurchase agreements with
institutions that the Series' investment adviser has determined are
creditworthy. Each repurchase agreement is recorded at cost. The Series requires
that the securities purchased in a repurchase transaction be transferred to the
custodian in a manner sufficient to enable the Series to obtain those securities
in the event of a default under the repurchase agreement. The Series monitors,
on a daily basis, the value of the securities transferred to ensure that the
value, including accrued interest, of the securities under each repurchase
agreement is greater than amounts owed to the Series under each such repurchase
agreement.

Deferred Organization Expenses - Costs incurred by the Series in connection with
its organization have been deferred and are being amortized on a straight-line
basis over a five-year period beginning on the date of commencement of
investment operations of the Series.

Investment Transactions and Income - Investment transactions are recorded on the
trade date. Interest income is recorded on the accrual basis. All premium and
original issue discount are amortized or accreted for financial statement and
tax reporting purposes as required by federal income tax regulations. Dividend
income is recorded on the ex-dividend date for dividends received in cash.
Dividend payments received in additional securities are recorded on the
ex-dividend date in an amount equal to the value of the security on such date.

Fees Paid Indirectly - The Series' custodian bank calculates its fee based on
the Series' average daily net assets. This fee is reduced according to an
expense offset arrangement with State Street Bank and Trust Company, the Trust's
dividend disbursing agent, which provides for partial reimbursement of custody
fees based on a formula developed to measure the value of cash deposited by the
Series with the custodian and with the dividend disbursing agent. This amount is
shown as a reduction of expenses on the Statement of Operations.

Tax Matters and Distributions - The Series' policy is to comply with the
provisions of the Internal Revenue Code (the Code) applicable to regulated
investment companies and to distribute to shareholders all of its taxable
income, including any net realized gain on investments. Accordingly, no
provision for federal income or excise tax is provided. The Series files a tax
return annually using tax accounting methods required under provisions of the
Code which may differ from generally accepted accounting principles, the basis
on which these financial statements are prepared. Accordingly, the amount of net
investment income and net realized gain reported on these financial statements
may differ from that reported on the Series' tax return. Distributions to
shareholders are recorded on the ex-dividend date.

The Series distinguishes between distributions on a tax basis and a financial
reporting basis and requires that only distributions in excess of tax basis
earnings and profits are reported in the financial statements as a return of
capital. Differences in the recognition or classification of income between the
financial statements and tax earnings and profits which result in temporary
over-distributions for financial statement purposes, are classified as
distributions in excess of net investment income or accumulated net realized
gains.

(3) Transactions with Affiliates
Investment Adviser - The Series has an investment advisory agreement with
Massachusetts Financial Services Company (MFS) to provide overall investment
advisory and administrative services, and general office facilities. The
management fee is computed daily and paid monthly at an effective annual rate of
0.75% of its average daily net assets. Under a temporary expense reimbursement
agreement with MFS, MFS has voluntarily agreed to limit the operating expenses
of the Series at levels which increase over time. Currently MFS has agreed to
limit the Series' expenses at an effective annual rate of 1.00% of its daily net
assets. MFS will pay all Series expenses in excess of the current limit subject
to reimbursement by the Series at a later date. To the extent that actual
Series' expenses do not reach the limit, the Series will reimburse MFS for prior
expenses paid by MFS on behalf of the Series such that the Series' expense ratio
does not exceed 1.00% of its average daily net assets. At December 31, 1995, the
aggregate unreimbursed expenses owed to MFS by the Series amounted to $15,659.

The Series pays no compensation directly to its Trustees who are officers of the
investment adviser, or to officers of the Series, all of whom receive
remuneration for their services to the Series from MFS. Certain of the officers
and Trustees of the Series are officers or directors of MFS and MFS Service
Center, Inc. (MFSC).

Shareholder Servicing Agent - MFSC, a wholly owned subsidiary of MFS, earns a
fee for its services as shareholder servicing agent. The fee is calculated as a
percentage of the average daily net assets at an effective annual rate of up to
0.035%.

(4) Portfolio Securities
Purchases and sales of investments, other than U.S. government securities,
purchased option transactions and short-term obligations, aggregated $4,632,026
and $1,525,399, respectively.

The cost and unrealized appreciation or depreciation in value of the investments
owned by the Series, as computed on a federal income tax basis, are as follows:

<TABLE>
<CAPTION>
<S>                                                                                        <C>          
   Aggregate cost                                                                          $  3,836,735
                                                                                           ============
   Gross unrealized appreciation                                                           $    297,653
   Gross unrealized depreciation                                                               (123,934)
                                                                                           ------------
     Net unrealized appreciation                                                           $    173,719
                                                                                           ============
</TABLE>

(5) Shares of Beneficial Interest
The Trust's Declaration of Trust permits the Trustees to issue an unlimited
number of full and fractional shares of beneficial interest (without par value).
Transactions in Series shares were as follows:

<TABLE>
<CAPTION>
Period Ended December 31, 1995*                                                   Shares          Amount
========================================================================================================
<S>                                                                              <C>       <C>          
Shares sold                                                                      501,081   $   5,564,342
Shares issued to shareholders in reinvestment of distributions                     9,255         104,583
Shares reacquired                                                               (172,174)     (1,960,484)
                                                                                 -------   -------------
Net increase                                                                     338,162   $   3,708,441
                                                                                ========   =============

*For the period from the commencement of investment operations, July 24, 1995 to December 31, 1995.
</TABLE>

(6) Line of Credit
The Series entered into an agreement which enables it to participate with other
funds managed by MFS in an unsecured line of credit with a bank which permits
borrowings up to $350 million, collectively. Borrowings may be made to
temporarily finance the repurchase of Series shares. Interest is charged to each
fund, based on its borrowings, at a rate equal to the bank's base rate. In
addition, a commitment fee, based on the average daily unused portion of the
line of credit, is allocated among the participating funds at the end of each
quarter.

(7) Restricted Securities
The Series may invest not more than 15% of its total assets in securities which
are subject to legal or contractual restrictions on resale. At December 31,
1995, the Series owned the following restricted security (constituting 0.5% of
net assets) which may not be publicly sold without registration under the
Securities Act of 1933 (the 1933 Act). The Series does not have the right to
demand that such security be registered. The value of this security is
determined by valuations supplied by a pricing service or brokers or, if not
available, in good faith by or at the direction of the Trustees. This security
may be offered and sold to "qualified institutional buyers" under Rule 144A of
the 1933 Act.

<TABLE>
<CAPTION>
                                                            Date of        Share
Description                                              Acquisition      Amount         Cost        Value
==========================================================================================================
<S>                                                         <C>              <C>  <C>           <C>       
Korea Mobile Telecommunications, ADR                        12/28/95         400  $    17,900   $   17,800
</TABLE>
<PAGE>
INDEPENDENT AUDITORS' REPORT

To the Trustees of MFS Variable Insurance Trust and Shareholders of MFS Emerging
Growth Series:

We have audited the accompanying statement of assets and liabilities, including
the portfolio of investments, of MFS Emerging Growth Series (the Series) (one of
the series constituting MFS Variable Insurance Trust) as of December 31, 1995,
the related statements of operations and changes in net assets and financial
highlights for the period from July 24, 1995 (the commencement of investment
operations) to December 31, 1995. These financial statements and financial
highlights are the responsibility of the Series' management. Our responsibility
is to express an opinion on these financial statements and financial highlights
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 and financial highlights are
free of material misstatement. An audit includes examining, on a test basis,
evidence supporting the amounts and disclosures in the financial statements. Our
procedures included confirmation of the securities owned at December 31, 1995 by
correspondence with the custodian and brokers; where replies were not received
from brokers, we performed other auditing procedures. 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, such financial statements and financial highlights present
fairly, in all material respects, the financial position of MFS Emerging Growth
Series at December 31, 1995, the results of its operations, the changes in its
net assets and its financial highlights for the stated period in conformity with
generally accepted accounting principles.



DELOITTE & TOUCHE LLP


Boston, Massachusetts
February 2, 1996



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

This report is prepared for the general information of shareholders. It is
authorized for distribution to prospective investors only when preceded or
accompanied by a current prospectus.
<PAGE>



                                                                VEG-2-2/96/14.5M




<PAGE>
[LOGO]
                                                               Annual Report for
                                                                      Year Ended
                                                               December 31, 1995

MFS(R) RESEARCH SERIES
A Series of MFS(R) Variable Insurance Trust
<PAGE>
MFS(R) RESEARCH SERIES
A SERIES OF MFS(R)  VARIABLE INSURANCE TRUST

TRUSTEES
A. Keith Brodkin*
Chairman and President

Nelson J. Darling, Jr.
Trustee, Eastern Enterprises
(diversified holding company)

William R. Gutow
Vice Chairman,
Capitol Entertainment
(Blockbuster Video Franchise)

TREASURER
W. Thomas London*

ASSISTANT TREASURER
James O. Yost*

SECRETARY
Stephen E. Cavan*

ASSISTANT SECRETARY
James R. Bordewick, Jr.*

INVESTMENT ADVISER
Massachusetts Financial Services Company
500 Boylston Street
Boston, MA 02116-3741

DISTRIBUTOR
MFS Fund Distributors, Inc.
500 Boylston Street
Boston, MA 02116-3741

SHAREHOLDER SERVICE CENTER
MFS Service Center, Inc.
P.O. Box 1400
Boston, MA 02107-9906

For additional information, contact your financial adviser.

CUSTODIAN
Investors Bank & Trust Company

AUDITORS
Deloitte & Touche LLP


*Affiliated with the Investment Adviser
<PAGE>
Dear Contract Owner:
An environment of declining interest rates and a favorable outlook for inflation
helped establish a pattern of positive performance in both fixed-income and
equity markets around the world during the past 12 months. Yields on many
fixed-income securities continued to decline throughout the year, and bond
prices rose in response to these declines. At the same time, lower interest
rates and strong corporate earnings reports through most of the year helped the
prices of many stocks to rise over the period, producing strong returns. For the
12 months ended December 31, 1995, the U.S. stock market, as measured by the
Standard & Poor's 500 Composite Index (the S&P 500), a popular, unmanaged index
of common stock performance, returned +37.53%. All of the series in the Trust
which invest in equity securities participated in this favorable performance and
achieved positive total returns.

U.S. Outlook
Moderate but sustainable growth was the hallmark of the economic expansion's
fifth year, although some signs of sluggishness were evident late in the year.
Recent retail sales, for example, have been disappointing, in part because of
rising levels of consumer debt. In addition, growth is not expected to get much
help from the manufacturing sector, as order flows from manufacturers have
moderated. Export activity, meanwhile, is also expected to remain modest as
continued weakness abroad limits demand for many U.S. goods. However, the
Federal Reserve Board's consistent and, so far, successful efforts to fight
inflation seem to be giving consumers and businesses enough longer-term
confidence to help maintain modest growth in real (adjusted for inflation) gross
domestic product into 1996.

Global Outlook
A pattern of slow to moderate growth and low and controlled inflation remains a
dominant theme in major industrialized countries, including the United States.
While the recent recovery of the dollar against the German mark and the Japanese
yen has added some strength to the economies of Europe and Japan, the outlook is
for sluggish economic growth, in the near term at least. And although moves by
central banks in Germany and Japan to lower interest rates have helped stimulate
domestic demand, many industrial companies in these countries are still
struggling to compete in a global marketplace in which the prices of their
products are less competitively priced. On the positive side, this does mean
little to no inflationary pressure in these countries, and we believe that this,
combined with further reductions in interest rates, could help provide a
foundation for stronger economic growth in the long run. Also, we believe that
many of the cost-cutting measures taken by companies in these countries over the
past few years will ultimately provide earnings leverage when economic growth
improves. Inflation in most overseas economies remains in a downward trend,
providing fixed-income investors with opportunities for relatively attractive
real rates of interest, possibly accompanied by moderate price appreciation.
While the dollar continues to represent a sound store of long-term value, its
relative strength in the near term is being restrained by the persistent U.S.
current-account deficit.

Bond Markets
Given the recent signs of economic weakness, prospects for the Federal Reserve
Board's further decreasing short-term interest rates are good. Long-term rates,
meanwhile, moved noticeably downward in the latter months of 1995 in
anticipation of more modest fourth-quarter growth with continued low inflation.
While there were some increases in commodity prices early in the year, companies
found it difficult to pass these on at the consumer level as they continue to
fight for market share. Additionally, unit labor costs remain under control and
seem to be growing at a pace that is near or below the ongoing inflation rate.
Thus, with long-term U.S. government bonds yielding approximately 6% in an
environment of 2% to 3% inflation, real rates of return in the fixed-income
markets remain relatively attractive.

In world bond markets, slowing economic growth, low inflation, and declining
official interest rates helped result in solid performance during the past 12
months. European governments are engaged in multi-year programs to reduce their
budget deficits and debt levels. These programs are positive for bonds in that
lower government spending tends to reduce inflationary pressures and lower
issuance of government debt reduces supply pressures on the bond market. In the
Japanese market, powerful deflationary forces have supported a drop in yields to
historically low levels. We now feel this process may be drawing to an end,
given a reversal of priorities at the central bank from fighting inflation,
which is now non-existent, to offsetting the downward spiral of deflation. The
high returns of the U.S. bond market, as measured by the Lehman Brothers
Government Bond Index, have been echoed in other U.S. dollar-bloc markets,
including Australia, New Zealand, and Canada, all of which saw positive
performance over the past year according to Salomon Brothers. Currently, the
Australian market offers significantly higher yields than the U.S. market, and,
we believe, represents good value. As long as the outlook for U.S. bonds remains
positive, these related markets could outperform the U.S. market.

Stock Markets
After some volatility late in the third quarter, the stock market continued to
strengthen. Although many companies reported solid third-quarter results, there
was some weakness in the earnings of retail, financial services and even some
technology companies. However, a slowdown in earnings may be a positive
development if it is an indication that the economy is not overheating and
inflation is under control. While we see a deceleration of corporate earnings as
the inevitable consequence of traditional business cycles, we remain encouraged
by the high absolute level of profitability among U.S. companies. Also, many
companies' increasing emphasis on cost containment and growing use of technology
have helped keep them highly competitive and reasonably profitable. Looking
ahead, we believe that a stabilizing interest rate environment, coupled with
reasonable earnings reports, could justify current market valuations.

Comments from the Director of Research are presented on the following page. We
appreciate your support and welcome any questions or comments you may have.

Respectfully,



/s/ A. Keith Brodkin                                  /s/ Kevin R. Parke
- ----------------------                                --------------------
A. Keith Brodkin                                      Kevin R. Parke
Chairman and President                                Director of Research

January 12, 1996
<PAGE>
MFS(R)  RESEARCH SERIES

The Research Series commenced investment operations on July 26, 1995 and
provided a total return of +10.62% from that date through December 31, 1995.
This compares to a +10.76% return for the S&P 500 for the same period.* The
Series' overweighting in the US defense industry contributed significantly to
performance. These stocks performed well due to continued consolidation of the
industry as well as improved margins for several specific programs. Stocks
within this group which contributed to performance included McDonnell Douglas
and Loral. The Series' holdings in technology contributed to performance. This
sector was volatile for the year, but our holdings outperformed the sector.
Particularly affecting performance was our computer software holdings which
appreciated due to successful new product introductions and continued strong
margins. Holdings in this category include Cadence Design, Oracle and Computer
Associates. Finally, the Series' holdings in financial services positively
affected performance. These stocks were strong due to decreased interest rates
and improved earnings due to industry consolidation.

Offsetting this strong performance was the Series' holdings in the retail and
cellular telephone industries. Retail stocks were very weak relative to the S&P
500 due to slowing consumer spending and increased competition. Cellular
telephone stocks were negatively affected by the purchase of Lin Broadcasting by
AT&T for a price lower than original expectations. In addition, subscriber
growth has slowed.

Our outlook for 1996 is that the slower U.S. economy will eventually affect
corporate earnings growth. Thus, the key to superior performance in the coming
year will be stock selection and strong relative earnings growth. Based on this
outlook, our committee of research analysts has overweighted technology,
financial services, health care, consumer staples, and industrial goods and
services. We believe stocks in these sectors could demonstrate strong earnings
even as the U.S. economy continues to slow. For example, within technology, we
are emphasizing computer software companies with strong product cycles and
proprietary niches. These attributes could enable these companies to sustain
their earnings growth and profit margins even if the overall technology market
slows.

A committee of MFS Research Analysts is responsible for the day-to-day
management of the Series under the general supervision of Mr. Parke.

PERFORMANCE SUMMARY

The information below illustrates the performance of the MFS Research Series
shares in comparison to a market indicator.

AGGREGATE TOTAL RETURNS                                              7/26/95* -
                                                                    12/31/95
===============================================================================
MFS Research Series                                                 +10.62%
- -------------------------------------------------------------------------------
Standard & Poor's 500 Composite Index+\1/                           +10.76%
- -------------------------------------------------------------------------------

All results are historical and, therefore, are not an indication of future
results. The investment return and principal value of an investment in the
product will vary with changes in market conditions, and shares, when redeemed,
may be worth more or less than their original cost. All Series results reflect
the applicable expense subsidy which is explained in the Notes to Financial
Statements. Had the subsidy not been in effect, the results would have been less
favorable. All Series results do not reflect expenses that would be imposed by
insurance company separate accounts.

  * Commencement of investment operations; benchmark comparisons are from July
    31, 1995.

  + The Standard & Poor's 500 Index is a popular, unmanaged index of common
    stock performance. It is not possible to invest in an index.

\1/ Source: Lipper Analytical Services, Inc.
<PAGE>
PORTFOLIO OF INVESTMENTS - December 31, 1995

<TABLE>
<CAPTION>
Common Stocks - 91.8%
========================================================================================================
Issuer                                                                            Shares           Value
- --------------------------------------------------------------------------------------------------------
<S>                                                                                <C>    <C>           
U.S. Stocks - 86.9%
   Aerospace - 4.4%
      General Dynamics Corp.                                                         400  $       23,650
      Lockheed-Martin Corp.                                                          400          31,600
      McDonnell Douglas Corp.                                                        500          46,000
      United Technologies Corp.                                                      100           9,487
                                                                                          --------------
                                                                                          $      110,737
- --------------------------------------------------------------------------------------------------------
   Agricultural Products - 3.0%
      AGCO Corp.                                                                     600  $       30,600
      Case Corp.                                                                   1,000          45,750
                                                                                          --------------
                                                                                          $       76,350
- --------------------------------------------------------------------------------------------------------
   Apparel and Textiles - 1.1%
      Nike, Inc.,  B                                                                 400  $       27,850
- --------------------------------------------------------------------------------------------------------
   Banks and Credit Companies - 3.9%
      BayBanks, Inc.                                                                 300  $       29,475
      Chase Manhattan Corp.                                                          400          24,250
      First Interstate Bancorp                                                       100          13,650
      Integra Financial Corp.                                                        300          18,900
      Northern Trust Co.                                                             200          11,200
                                                                                          --------------
                                                                                          $       97,475
- --------------------------------------------------------------------------------------------------------
   Business Machines - 1.1%
      International Business Machines Corp.                                          300  $       27,525
- --------------------------------------------------------------------------------------------------------
   Business Services - 2.6%
      Affiliated Computer Co.*                                                       300  $       11,250
      Alco Standard Corp.                                                            500          22,813
      Ceridian Corp.*                                                                700          28,875
      Technology Solutions Co.*                                                      200           3,900
                                                                                          --------------
                                                                                          $       66,838
- --------------------------------------------------------------------------------------------------------
   Cellular Phones - 0.3%
      Telephone & Data Systems, Inc.                                                 200  $        7,900
- --------------------------------------------------------------------------------------------------------
   Chemicals - 1.9%
      Air Products & Chemicals, Inc.                                                 300  $       15,825
      Grace (W.R.) & Co.                                                             300          17,737
      Hanna (M.A.) Co.                                                               300           8,400
      Uniroyal Chemical Corp.*                                                       900           7,425
                                                                                          --------------
                                                                                          $       49,387
- --------------------------------------------------------------------------------------------------------
   Computer Software - Personal Computers - 1.6%
      Electronic Arts, Inc.*                                                         500  $       13,063
      Microsoft Corp.*                                                               300          26,325
                                                                                          --------------
                                                                                          $       39,388
- --------------------------------------------------------------------------------------------------------
   Computer Software - Systems - 7.2%
      Adobe Systems, Inc.                                                            400  $       24,800
      BMC Software, Inc.*                                                            300          12,825
      Cadence Design Systems, Inc.*                                                1,100          46,200
      Compaq Computer Corp.*                                                         300          14,400
      Computer Associates International, Inc.                                        400          22,750
      Compuware Corp.*                                                               500           9,250
<PAGE>
<CAPTION>
PORTFOLIO OF INVESTMENTS - continued

Common Stocks - continued
========================================================================================================
Issuer                                                                            Shares           Value
- --------------------------------------------------------------------------------------------------------
<S>                                                                                <C>    <C>           
U.S. Stocks - continued
   Computer Software - Systems - continued
      Oracle Systems Corp.*                                                          900  $       38,137
      Sybase, Inc.*                                                                  400          14,400
                                                                                          --------------
                                                                                          $      182,762
- --------------------------------------------------------------------------------------------------------
   Consumer Goods and Services - 8.7%
      Colgate-Palmolive Co.                                                          500  $       35,125
      Duracell International, Inc.                                                   600          31,050
      Gillette Co.                                                                   600          31,275
      META Group, Inc.*                                                              100           3,062
      Philip Morris Cos., Inc.                                                       400          36,200
      Procter & Gamble Co.                                                           400          33,200
      Schweitzer-Mauduit International, Inc.*                                         30             694
      Service Corporation International                                              500          22,000
      Tyco International Ltd.                                                        800          28,500
                                                                                          --------------
                                                                                          $      221,106
- --------------------------------------------------------------------------------------------------------
   Defense Electronics - 1.7%
      Loral Corp.                                                                  1,200  $       42,450
- --------------------------------------------------------------------------------------------------------
   Electronics - 3.5%
      ESS Technology, Inc.*                                                          100  $        2,300
      Intel Corp.                                                                    700          39,725
      LSI Logic Corp.*                                                               200           6,550
      National Semiconductor Corp.*                                                  400           8,900
      Xilinx, Inc.*                                                                1,000          30,500
                                                                                          --------------
                                                                                          $       87,975
- --------------------------------------------------------------------------------------------------------
   Entertainment - 2.1%
      Aztar Corp.*                                                                 3,200  $       25,600
      Harrah's Entertainment, Inc.*                                                  700          16,975
      Heritage Media Corp., "A"*                                                     400          10,250
                                                                                          --------------
                                                                                          $       52,825
- --------------------------------------------------------------------------------------------------------
   Financial Institutions - 1.2%
      Advanta Corp., "B"                                                             400  $       14,550
      Federal Home Loan Mortgage Corp.                                               200          16,700
                                                                                          --------------
                                                                                          $       31,250
- --------------------------------------------------------------------------------------------------------
   Food and Beverage Products - 4.5%
      Campbell Soup Co.                                                              400  $       24,000
      Kellogg Co.                                                                    300          23,175
      Nabisco Holdings Corp., "A"                                                    800          26,100
      PepsiCo, Inc.                                                                  500          27,937
      Universal Foods Corp.                                                          300          12,038
                                                                                          --------------
                                                                                          $      113,250
- --------------------------------------------------------------------------------------------------------
   Forest and Paper Products - 1.8%
      Fort Howard Corp.*                                                             200  $        4,500
      Kimberly Clark Corp.                                                           500          41,375
                                                                                          --------------
                                                                                          $       45,875
- --------------------------------------------------------------------------------------------------------
   Insurance - 8.8%
      AFLAC, Inc.                                                                    400  $       17,350
      American Re Corp.                                                              300          12,262
      Amerin Corp.*                                                                  400          10,700
<PAGE>
<CAPTION>
PORTFOLIO OF INVESTMENTS - continued

Common Stocks - continued
========================================================================================================
Issuer                                                                            Shares           Value
- --------------------------------------------------------------------------------------------------------
<S>                                                                                <C>    <C>           
U.S. Stocks - continued
   Insurance - continued
      CIGNA Corp.                                                                    300  $       30,975
      Equitable of Iowa Cos.                                                         600          19,275
      GCR Holdings Ltd.                                                              500          11,250
      LaSalle Re Holdings Ltd.*                                                      300           6,863
      MBIA, Inc.                                                                     400          30,000
      Penncorp Financial Group, Inc.                                               1,200          35,250
      Prudential Reinsurance Holdings, Inc.                                          800          18,700
      Sphere Drake Holdings Ltd.                                                     800          11,200
      Travelers, Inc.                                                                300          18,863
                                                                                          --------------
                                                                                          $      222,688
- --------------------------------------------------------------------------------------------------------
   Machinery - 0.6%
      York International Corp.                                                       300  $       14,100
- --------------------------------------------------------------------------------------------------------
   Medical and Health Products - 4.5%
      Johnson & Johnson                                                              100  $        8,563
      Medisense, Inc.*                                                             1,300          41,112
      Neuromedical Systems, Inc.*                                                    800          16,100
      Pfizer, Inc.                                                                   300          18,900
      Uromed Corp.*                                                                2,200          28,325
      Zoll Medical Corp.*                                                            100             900
                                                                                          --------------
                                                                                          $      113,900
- --------------------------------------------------------------------------------------------------------
   Medical and Health Technology and Services - 5.3%
      Amisys Managed Care Systems*                                                   900  $       17,100
      Community Health Systems*                                                      400          14,250
      Living Centers of America*                                                     200           7,000
      Mariner Health Group, Inc.*                                                    100           1,662
      Pacificare Health Systems, Inc., "B"                                           300          26,100
      St. Jude Medical, Inc.*                                                        700          30,100
      United Healthcare Corp.                                                        600          39,300
                                                                                          --------------
                                                                                          $      135,512
- --------------------------------------------------------------------------------------------------------
   Oils - 2.7%
      Mobil Corp.                                                                    400  $       44,800
      Seacor Holdings, Inc.*                                                         200           5,400
      Union Pacific Resources Group, Inc.                                            700          17,762
                                                                                          --------------
                                                                                          $       67,962
- --------------------------------------------------------------------------------------------------------
   Pollution Control - 0.9%
      WMX Technologies, Inc.                                                         800  $       23,900
- --------------------------------------------------------------------------------------------------------
   Railroads - 1.9%
      CSX Corp.                                                                      500  $       22,813
      Wisconsin Central Transportation Corp.*                                        400          26,300
                                                                                          --------------
                                                                                          $       49,113
- --------------------------------------------------------------------------------------------------------
   Restaurants and Lodging - 1.3%
      HFS, Inc.*                                                                     100  $        8,175
      Promus Hotel Corp.*                                                            400           8,900
      Sonic Corp.*                                                                   850          16,150
                                                                                          --------------
                                                                                          $       33,225
- --------------------------------------------------------------------------------------------------------
   Special Products and Services - 2.1%
      Intertape Polymer Group, Inc.                                                  700  $       21,963
      Stanley Works                                                                  600          30,900
                                                                                          --------------
                                                                                          $       52,863
- --------------------------------------------------------------------------------------------------------
<PAGE>
PORTFOLIO OF INVESTMENTS - continued

Common Stocks - continued
========================================================================================================
Issuer                                                                            Shares           Value
- --------------------------------------------------------------------------------------------------------
<S>                                                                                <C>    <C>           
U.S. Stocks - continued
   Stores - 4.2%
      Circuit City Stores, Inc.                                                      700  $       19,337
      Gymboree Corp.*                                                              1,100          22,688
      Hollywood Entertainment Corp.*                                                 400           3,350
      Home Depot, Inc.                                                               300          14,362
      Lowe's Cos., Inc.                                                              300          10,050
      Micro Warehouse, Inc.*                                                         500          21,625
      Office Depot, Inc.*                                                            700          13,825
                                                                                          --------------
                                                                                          $      105,237
- --------------------------------------------------------------------------------------------------------
   Telecommunications - 1.9%
      Cabletron Systems, Inc.*                                                       400  $       32,400
      Cisco Systems, Inc.*                                                           200          14,925
                                                                                          --------------
                                                                                          $       47,325
- --------------------------------------------------------------------------------------------------------
   Utilities - Gas - 2.1%
      Coastal Corp.                                                                  700  $       26,075
      Enron Corp.                                                                    700          26,688
                                                                                          --------------
                                                                                          $       52,763
- --------------------------------------------------------------------------------------------------------
Total U.S. Stocks                                                                         $    2,199,531
- --------------------------------------------------------------------------------------------------------
Foreign Stocks - 4.9%
   Denmark - 0.2%
      Tele Danmark, ADR (Utilities - Telephone)                                      200  $        5,525
- --------------------------------------------------------------------------------------------------------
   France - 1.2%
      Pinault-Printemps (Stores)                                                     100  $       19,924
      Television Francaise (Entertainment)                                           100          10,707
                                                                                          --------------
                                                                                          $       30,631
- --------------------------------------------------------------------------------------------------------
   Hong Kong  - 0.2%
      Giordano International Ltd. (Stores)                                         6,000  $        5,121
- --------------------------------------------------------------------------------------------------------
   Italy - 0.2%
      Telecom Italia Mobile SpA (Telecommunications)                               4,800  $        5,051
- --------------------------------------------------------------------------------------------------------
   Malaysia - 0.9%
      New Straits Times Press (Publishing)                                         7,000  $       23,439
- --------------------------------------------------------------------------------------------------------
   Norway - 0.1%
      Tomra Systems A/S (Pollution Control)                                          300  $        2,367
- --------------------------------------------------------------------------------------------------------
   Sweden - 2.1%
      Astra AB, Free Shares, "B" (Medical and Health Products)                       800  $       31,666
      Ericsson LM, "B" (Telecommunications)                                          500           9,783
      Hennes & Mauritz, "B" (Stores)                                                 200          11,137
                                                                                          --------------
                                                                                          $       52,586
- --------------------------------------------------------------------------------------------------------
Total Foreign Stocks                                                                      $      124,720
- --------------------------------------------------------------------------------------------------------
Total Common Stocks (Identified Cost, $2,211,269)                                         $    2,324,251
- --------------------------------------------------------------------------------------------------------
<PAGE>

Short-Term Obligation - 7.9%
========================================================================================================
                                                                        Principal Amount
                                                                           (000 Omitted)
- --------------------------------------------------------------------------------------------------------
<S>                                                                                 <C>   <C>           
   Federal National Mortgage Assn., due 1/17/96, at Amortized Cost                  $200  $      199,180
- --------------------------------------------------------------------------------------------------------
Total Investments (Identified Cost, $2,410,449)                                           $    2,523,431
Other Assets, Less Liabilities - 0.3%                                                              6,738
========================================================================================================
Net Assets - 100.0%                                                                       $    2,530,169
- --------------------------------------------------------------------------------------------------------

*Non-income producing security.
</TABLE>

See notes to financial statements
<PAGE>
FINANCIAL STATEMENTS

<TABLE>
<CAPTION>
Statement of Assets and Liabilities
=======================================================================================================
December 31, 1995
- -------------------------------------------------------------------------------------------------------
<S>                                                                                     <C>            
Assets:
   Investments, at value (identified cost, $2,410,449)                                  $     2,523,431
   Cash                                                                                          62,531
   Receivable for Series shares sold                                                             28,201
   Interest and dividends receivable                                                              2,056
   Receivable from investment adviser                                                             6,619
   Deferred organization expenses                                                                 8,398
                                                                                        ---------------
         Total assets                                                                   $     2,631,236
                                                                                        ---------------
Liabilities:
   Payable for investments purchased                                                    $        86,813
   Payable for Series shares reacquired                                                               7
   Payable to affiliates for management fee                                                         155
   Accrued expenses and other liabilities                                                        14,092
                                                                                        ---------------
         Total liabilities                                                              $       101,067
                                                                                        ---------------
Net assets                                                                              $     2,530,169
                                                                                        ===============
Net assets consist of:
   Paid-in capital                                                                      $     2,417,438
   Unrealized appreciation on investments
      and translation of assets and liabilities in foreign currencies                           112,983
   Accumulated distributions in excess of net realized gain
      on investments and foreign currency transactions                                             (252)
                                                                                        ---------------
         Total                                                                          $     2,530,169
                                                                                        ===============
Shares of beneficial interest outstanding                                                       232,411
                                                                                        ===============
Net asset value, offering price and redemption price per share
   (net assets of $2,530,169 / 232,411 shares of beneficial interest outstanding)           $10.89
                                                                                        ===============
</TABLE>

See notes to financial statements
<PAGE>
FINANCIAL STATEMENTS - continued

<TABLE>
<CAPTION>
Statement of Operations
======================================================================================================
Period Ended December 31, 1995*
- ------------------------------------------------------------------------------------------------------
<S>                                                                                     <C>           
Net investment income:
   Income -
      Interest                                                                          $        7,204
      Dividends                                                                                  5,442
                                                                                        --------------
            Total investment income                                                     $       12,646
                                                                                        --------------
   Expenses -
      Management fee                                                                    $        4,424
      Trustees' compensation                                                                       708
      Shareholder servicing agent fee                                                              199
      Auditing fees                                                                             10,593
      Printing                                                                                   4,032
      Amortization of organization expenses                                                        790
      Legal fees                                                                                   646
      Custodian fee                                                                                436
      Miscellaneous                                                                              1,105
                                                                                        --------------
            Total expenses                                                              $       22,933
      Reduction of expenses by investment adviser                                              (16,913)
      Fees paid indirectly                                                                        (123)
                                                                                        --------------
            Net expenses                                                                $        5,897
                                                                                        --------------
               Net investment income                                                    $        6,749
                                                                                        --------------
   Realized and unrealized gain (loss) on investments:
   Realized gain (loss) (identified cost basis) -
      Investment transactions                                                           $       31,254
      Foreign currency transactions                                                               (166)
                                                                                        --------------
            Net realized gain on investments and foreign currency transactions          $       31,088
                                                                                        --------------
   Change in unrealized appreciation -
      Investments                                                                       $      112,982
      Translation of assets and liabilities in foreign currencies                                    1
                                                                                        --------------
            Net unrealized gain on investments                                          $      112,983
                                                                                        --------------
               Net realized and unrealized gain on investments and foreign currency     $      144,071
                                                                                        --------------
                  Increase in net assets from operations                                $      150,820
                                                                                        ==============

*For the period from the commencement of investment operations, July 26, 1995 to December 31, 1995.
</TABLE>

See notes to financial statements
<PAGE>
FINANCIAL STATEMENTS - continued

<TABLE>
<CAPTION>
Statement of Changes in Net Assets
=======================================================================================================
Period Ended December 31, 1995
- -------------------------------------------------------------------------------------------------------
<S>                                                                                     <C>            
Increase (decrease) in net assets:
From operations -
   Net investment income                                                                $         6,749
   Net realized gain on investments and foreign currency transactions                            31,088
   Net unrealized gain on investments and foreign currency translation                          112,983
                                                                                        ---------------
      Increase in net assets from operations                                            $       150,820
                                                                                        ---------------
Distributions declared to shareholders -
   From net investment income                                                           $        (6,583)
   From net realized gain on investments and foreign currency transactions                      (31,506)
                                                                                        ---------------
            Total distributions declared to shareholders                                $       (38,089)
                                                                                        ---------------
Series share (principal) transactions -
   Net proceeds from sale of shares                                                     $     2,485,755
   Net asset value of shares issued to shareholders
      in reinvestment of distributions                                                           38,091
   Cost of shares reacquired                                                                   (115,008)
                                                                                        ---------------
      Increase in net assets from Series share transactions                             $     2,408,838
                                                                                        ---------------
            Total increase in net assets                                                $     2,521,569
Net assets:
   At beginning of period                                                                         8,600
                                                                                        ---------------
   At end of period                                                                     $     2,530,169
                                                                                        ===============

*For the period from the commencement of investment operations, July 26, 1995 to December 31, 1995.
</TABLE>

See notes to financial statements
<PAGE>
FINANCIAL STATEMENTS - continued

<TABLE>
<CAPTION>
Financial Highlights
======================================================================================================
Period Ended December 31, 1995*
- ------------------------------------------------------------------------------------------------------
<S>                                                                                     <C>           
Per share data (for a share outstanding throughout each period):
Net asset value - beginning of period                                                   $        10.00
                                                                                        --------------
Income from investment operations# -
   Net investment income{S}                                                             $         0.05
   Net realized and unrealized gain on investments and foreign
      currency transactions                                                                       1.01
                                                                                        --------------
      Total from investment operations                                                  $         1.06
                                                                                        --------------
Less distributions declared to shareholders -
   From net investment income                                                           $        (0.03)
   From net realized gain on investments and foreign currency transactions                       (0.14)
                                                                                        --------------
      Total distributions declared to shareholders                                      $        (0.17)
                                                                                        --------------
Net asset value - end of period                                                         $        10.89
                                                                                        ==============
Total return 10.62%++ Ratios (to average net assets)/Supplemental data{S}:
   Expenses                                                                                      1.00%+
   Net investment income                                                                         1.15%+
Portfolio turnover                                                                                 28%
Net assets at end of period (000 omitted)                                               $        2,530

<FN>
  *For the period from the commencement of investment operations, July 26, 1995 to December 31, 1995.
  +Annualized.
 ++Not annualized.
  #Per share data is based on average shares outstanding.
{S}The adviser voluntarily agreed to maintain the expenses of the Series at
   not more than 1.00% of average daily net assets. To the extent actual
   expenses were over these limitations, the net investment loss per share and
   the ratios would have been:
</FN>

<S>                                                                                     <C>            
      Net investment loss                                                               $       (0.08)
      Ratios (to average net assets):
         Expenses                                                                                3.90%+
         Net investment loss                                                                   (1.73)%+
</TABLE>

See notes to financial statements
<PAGE>
NOTES TO FINANCIAL STATEMENTS

(1) Business and Organization
MFS Research Series (the Series) is a diversified series of MFS Variable
Insurance Trust (the Trust) which is comprised of the following twelve series:
MFS Bond Series, MFS Emerging Growth Series, MFS Growth Series, MFS Growth with
Income Series, MFS High Income Series, MFS Limited Maturity Series, MFS Money
Market Series, MFS Research Series, MFS Strategic Fixed Income Series, MFS Total
Return Series, MFS Utilities Series and MFS World Governments Series. The Trust
is organized as a Massachusetts business trust and is registered under the
Investment Company Act of 1940, as amended, as an open-end management investment
company.

The shareholders of each Series of the Trust are separate accounts of insurance
companies which offer variable annuity and/or life insurance products. The
Series was seeded on or about February 1, 1994, but remained inactive until the
current period. The commencement of investment operations took place on July 26,
1995. As of December 31, 1995 there were six shareholders in the Series.

(2) Significant Accounting Policies
Investment Valuations - Equity securities listed on securities exchanges or
reported through the NASDAQ system are valued at last sale prices. Unlisted
equity securities or listed equity securities for which last sale prices are not
available are valued at last quoted bid prices. Debt securities (other than
short-term obligations which mature in 60 days or less), including listed issues
and forward contracts, are valued on the basis of valuations furnished by
dealers or by a pricing service with consideration to factors such as
institutional-size trading in similar groups of securities, yield, quality,
coupon rate, maturity, type of issue, trading characteristics and other market
data, without exclusive reliance upon exchange or over-the-counter prices.
Short-term obligations, which mature in 60 days or less, are valued at amortized
cost, which approximates market value. Securities for which there are no such
quotations or valuations are valued at fair value as determined in good faith by
or at the direction of the Trustees.

Repurchase Agreements - The Series may enter into repurchase agreements with
institutions that the Series' investment adviser has determined are
creditworthy. Each repurchase agreement is recorded at cost. The Series requires
that the securities purchased in a repurchase transaction be transferred to the
custodian in a manner sufficient to enable the Series to obtain those securities
in the event of a default under the repurchase agreement. The Series monitors,
on a daily basis, the value of the securities transferred to ensure that the
value, including accrued interest, of the securities under each repurchase
agreement is greater than amounts owed to the Series under each such repurchase
agreement.

Foreign Currency Translation - Investment valuations, other assets, and
liabilities initially expressed in foreign currencies are converted each
business day into U.S. dollars based upon current exchange rates. Purchases and
sales of foreign investments, income and expenses are converted into U.S.
dollars based upon currency exchange rates prevailing on the respective dates of
such transactions. Gains and losses attributable to foreign currency exchange
rates on sales of securities are recorded for financial statement purposes as
net realized gains and losses on investments. Gains and losses attributable to
foreign exchange rate movements on income and expenses are recorded for
financial statement purposes as foreign currency transaction gains and losses.
That portion of both realized and unrealized gains and losses on investments
that results from fluctuations in foreign currency exchange rates is not
separately disclosed.

Deferred Organization Expenses - Costs incurred by the Series in connection with
its organization have been deferred and are being amortized on a straight-line
basis over a five-year period beginning on the date of commencement of
investment operations of the Series.

Forward Foreign Currency Exchange Contracts - The Series may enter into forward
foreign currency exchange contracts for the purchase or sale of a specific
foreign currency at a fixed price on a future date. Risks may arise upon
entering these contracts from the potential inability of counterparties to meet
the terms of their contracts and from unanticipated movements in the value of a
foreign currency relative to the U.S. dollar. The Series will enter into forward
contracts for hedging purposes as well as for non-hedging purposes. For hedging
purposes, the Series may enter into contracts to deliver or receive foreign
currency it will receive from or require for its normal investment activities.
It may also use contracts in a manner intended to protect foreign
currency-denominated securities from declines in value due to unfavorable
exchange rate movements. For non-hedging purposes, the Series may enter into
contracts with the intent of changing the relative exposure of the Series'
portfolio of securities to different currencies to take advantage of anticipated
changes. The forward foreign currency exchange contracts are adjusted by the
daily exchange rate of the underlying currency and any gains or losses are
recorded for financial statement purposes as unrealized until the contract
settlement date.

Investment Transactions and Income - Investment transactions are recorded on the
trade date. Interest income is recorded on the accrual basis. All premium and
original issue discount are amortized or accreted for financial statement and
tax reporting purposes as required by federal income tax regulations. Dividend
income is recorded on the ex-dividend date for dividends received in cash.
Dividend and interest payments received in additional securities are recorded on
the ex-dividend or ex-interest date in an amount equal to the value of the
security on such date.

Fees Paid Indirectly - The Series' custodian bank calculates its fee based on
the Series' average daily net assets. This fee is reduced according to an
expense offset arrangement with State Street Bank and Trust Company, the Trust's
dividend disbursing agent, which provides for partial reimbursement of custody
fees based on a formula developed to measure the value of cash deposited by the
Series with the custodian and with the dividend disbursing agent. This amount is
shown as a reduction of expenses on the Statement of Operations.

Tax Matters and Distributions - The Series' policy is to comply with the
provisions of the Internal Revenue Code (the Code) applicable to regulated
investment companies and to distribute to shareholders all of its taxable
income, including any net realized gain on investments. Accordingly, no
provision for federal income or excise tax is provided. The Series files a tax
return annually using tax accounting methods required under provisions of the
Code which may differ from generally accepted accounting principles, the basis
on which these financial statements are prepared. Accordingly, the amount of net
investment income and net realized gain reported on these financial statements
may differ from that reported on the Series' tax return. Distributions to
shareholders are recorded on the ex-dividend date.

The Series distinguishes between distributions on a tax basis and a financial
reporting basis and requires that only distributions in excess of tax basis
earnings and profits are reported in the financial statements as a return of
capital. Differences in the recognition or classification of income between the
financial statements and tax earnings and profits which result in temporary
over-distributions for financial statement purposes, are classified as
distributions in excess of net investment income or accumulated net realized
gains. During the period ended December 31, 1995, $166 was reclassified from
accumulated undistributed net investment income to accumulated distributions in
excess of net realized gain on investments and foreign currency transactions,
due to differences between book and tax accounting for currency transactions.
This change had no effect on the net assets or net asset value per share.

(3) Transactions with Affiliates
Investment Adviser - The Series has an investment advisory agreement with
Massachusetts Financial Services Company (MFS) to provide overall investment
advisory and administrative services, and general office facilities. The
management fee is computed daily and paid monthly at an effective annual rate of
0.75% of its average daily net assets. Under a temporary expense reimbursement
agreement with MFS, MFS has voluntarily agreed to limit the operating expenses
of the Series at levels which increase over time. Currently MFS has agreed to
limit the Series' expenses at an effective annual rate of 1.00% of its average
daily net assets. MFS will pay all Series' expenses in excess of the current
limit subject to reimbursement by the Series at a later date. To the extent that
actual Series' expenses do not reach the limit, the Series will reimburse MFS
for prior expenses paid by MFS on behalf of the Series such that the Series'
expense ratio does not exceed 1.00% of its average daily net assets. At December
31, 1995, the aggregate unreimbursed expenses owed to MFS by the Series amounted
to $16,913.

The Series pays no compensation directly to its Trustees who are officers of the
investment adviser, or to officers of the Series, all of whom receive
remuneration for their services to the Series from MFS. Certain of the officers
and Trustees of the Series are officers or directors of MFS and MFS Service
Center, Inc. (MFSC).

Shareholder Servicing Agent - MFSC, a wholly owned subsidiary of MFS, earns a
fee for its services as shareholder servicing agent. The fee is calculated as a
percentage of the average daily net assets at an effective annual rate of up to
0.035%.

(4) Portfolio Securities
Purchases and sales of investments, other than U.S. government securities,
purchased option transactions and short-term obligations, aggregated $2,642,344
and $461,477, respectively.

The cost and unrealized appreciation or depreciation in value of the investments
owned by the Series, as computed on a federal income tax basis, are as follows:

<TABLE>
<CAPTION>
<S>                                                                                       <C>          
      Aggregate cost                                                                      $   2,410,449
                                                                                          =============
      Gross unrealized appreciation                                                       $     161,963
      Gross unrealized depreciation                                                             (48,981)
                                                                                          -------------
         Net unrealized appreciation                                                      $     112,982
                                                                                          =============
</TABLE>


(5) Shares of Beneficial Interest
The Declaration of Trust permits the Trustees to issue an unlimited number of
full and fractional shares of beneficial interest (without par value).
Transactions in Series shares were as follows:

<TABLE>
<CAPTION>
Period Ended December 31, 1995*                                               Shares              Amount
========================================================================================================
<S>                                                                          <C>          <C>           
Shares sold                                                                  238,822      $    2,485,755
Shares issued to shareholders in reinvestment of distributions                 3,521              38,091
Shares reacquired                                                            (10,792)           (115,008)
                                                                             -------      --------------
    Net increase                                                             231,551      $    2,408,838
                                                                             =======      ==============

*For the period from commencement of investment operations, July 26, 1995 to December 31, 1995.
</TABLE>

(6) Line of Credit
The Series entered into an agreement which enables it to participate with other
funds managed by MFS in an unsecured line of credit with a bank which permits
borrowings up to $350 million, collectively. Borrowings may be made to
temporarily finance the repurchase of Series shares. Interest is charged to each
fund, based on its borrowings, at a rate equal to the bank's base rate. In
addition, a commitment fee, based on the average daily unused portion of the
line of credit, is allocated among the participating funds at the end of each
quarter.

(7) Financial Instruments
The Series trades financial instruments with off-balance sheet risk in the
normal course of its investing activities in order to manage exposure to market
risks such as foreign currency exchange rates. These financial instruments
include forward foreign currency exchange contracts. The notional or contractual
amounts of these instruments represent the investment the Series has in
particular classes of financial instruments and does not necessarily represent
the amounts potentially subject to risk. The measurement of the risks associated
with these instruments is meaningful only when all related and offsetting
transactions are considered.

At December 31, 1995, the Series had no such commitments under these contracts.
<PAGE>
INDEPENDENT AUDITORS' REPORT

To the Trustees of MFS Variable Insurance Trust and Shareholders of MFS Research
Series:

We have audited the accompanying statement of assets and liabilities, including
the portfolio of investments, of MFS Research Series (the Series) (one of the
Series constituting MFS Variable Insurance Trust) as of December 31, 1995, the
related statements of operations and changes in net assets and financial
highlights for the period from July 26, 1995 (the commencement of investment
operations) to December 31, 1995. These financial statements and financial
highlights are the responsibility of the Series' management. Our responsibility
is to express an opinion on these financial statements and financial highlights
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 and financial highlights are
free of material misstatement. An audit includes examining, on a test basis,
evidence supporting the amounts and disclosures in the financial statements. Our
procedures included confirmation of the securities owned at December 31, 1995 by
correspondence with the custodian and brokers; where replies were not received
from brokers, we performed other auditing procedures. 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, such financial statements and financial highlights present
fairly, in all material respects, the financial position of MFS Research Series
at December 31, 1995, the results of its operations, the changes in its net
assets and its financial highlights for the stated period in conformity with
generally accepted accounting principles.



DELOITTE & TOUCHE LLP


Boston, Massachusetts
February 2, 1996



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

This report is prepared for the general information of shareholders. It is
authorized for distribution to prospective investors only when preceded or
accompanied by a current prospectus.
<PAGE>



                                                                   VFR-2-2/96/3M




<PAGE>
[LOGO]                                                       Annual Report for
THE FIRST NAME IN MUTUAL FUNDS                                      Year Ended
                                                             December 31, 1995


MFS(R) GROWTH WITH INCOME SERIES
A Series of MFS(R) Variable Insurance Trust
<PAGE>
MFS(R) GROWTH WITH INCOME SERIES
A SERIES OF MFS(R) VARIABLE INSURANCE TRUST

TRUSTEES

A. Keith Brodkin*
Chairman and President

Nelson J. Darling, Jr.
Trustee, Eastern Enterprises
(diversified holding company)

William R. Gutow
Vice Chairman,
Capitol Entertainment
(Blockbuster Video Franchise)

PORTFOLIO MANAGERS
John D. Laupheimer, Jr.*
Kevin R. Parke*

TREASURER
W. Thomas London*

ASSISTANT TREASURER
James O. Yost*

SECRETARY
Stephen E. Cavan*

ASSISTANT SECRETARY
James R. Bordewick, Jr.*

INVESTMENT ADVISER
Massachusetts Financial Services Company
500 Boylston Street
Boston, MA 02116-3741

DISTRIBUTOR
MFS Fund Distributors, Inc.
500 Boylston Street
Boston, MA 02116-3741

SHAREHOLDER SERVICE CENTER
MFS Service Center, Inc.
P.O. Box 1400
Boston, MA 02107-9906

For additional information,
contact your financial adviser.

CUSTODIAN
Investors Bank & Trust Company

AUDITORS
Deloitte & Touche LLP

*Affiliated with the Investment Adviser
<PAGE>

Dear Contract Owner:
An environment of declining interest rates and a favorable outlook for inflation
helped establish a pattern of positive performance in both fixed-income and
equity markets around the world during the past 12 months. Yields on many
fixed-income securities continued to decline throughout the year, and bond
prices rose in response to these declines. At the same time, lower interest
rates and strong corporate earnings reports through most of the year helped the
prices of many stocks to rise over the period, producing strong returns. For the
12 months ended December 31, 1995, the U.S. stock market, as measured by the
Standard & Poor's 500 Composite Index (the S&P 500), a popular, unmanaged index
of common stock performance, returned +37.53%. All of the series in the Trust
which invest in equity securities participated in this favorable performance and
achieved positive total returns.

U.S. Outlook
Moderate but sustainable growth was the hallmark of the economic expansion's
fifth year, although some signs of sluggishness were evident late in the year.
Recent retail sales, for example, have been disappointing, in part because of
rising levels of consumer debt. In addition, growth is not expected to get much
help from the manufacturing sector as order flows from manufacturers have
moderated. Export activity, meanwhile, is also expected to remain modest as
continued weakness abroad limits demand for many U.S. goods. However, the
Federal Reserve Board's consistent and, so far, successful efforts to fight
inflation seem to be giving consumers and businesses enough longer-term
confidence to help maintain modest growth in real (adjusted for inflation) gross
domestic product into 1996.

Global Outlook
A pattern of slow to moderate growth and low and controlled inflation remains a
dominant theme in major industrialized countries, including the United States.
While the recent recovery of the dollar against the German mark and the Japanese
yen has added some strength to the economies of Europe and Japan, the outlook is
for sluggish economic growth, in the near term at least. And although moves by
central banks in Germany and Japan to lower interest rates have helped stimulate
domestic demand, many industrial companies in these countries are still
struggling to compete in a global marketplace in which the prices of their
products are less competitively priced. On the positive side, this does mean
little to no inflationary pressure in these countries, and we believe that this,
combined with further reductions in interest rates, could help provide a
foundation for stronger economic growth in the long run. Also, we believe that
many of the cost-cutting measures taken by companies in these countries over the
past few years will ultimately provide earnings leverage when economic growth
improves. Inflation in most overseas economies remains in a downward trend,
providing fixed-income investors with opportunities for relatively attractive
real rates of interest, possibly accompanied by moderate price appreciation.
While the dollar continues to represent a sound store of long-term value, its
relative strength in the near term is being restrained by the persistent U.S.
current-account deficit.

Bond Markets
Given the recent signs of economic weakness, prospects for the Federal Reserve
Board's further decreasing short-term interest rates are good. Long-term rates,
meanwhile, moved noticeably downward in the latter months of 1995 in
anticipation of more modest fourth-quarter growth with continued low inflation.
While there were some increases in commodity prices early in the year, companies
found it difficult to pass these on at the consumer level as they continue to
fight for market share. Additionally, unit labor costs remain under control and
seem to be growing at a pace that is near or below the ongoing inflation rate.
Thus, with long-term U.S. government bonds yielding approximately 6% in an
environment of 2% to 3% inflation, real rates of return in the fixed-income
markets remain relatively attractive.

In world bond markets, slowing economic growth, low inflation, and declining
official interest rates helped result in solid performance during the past 12
months. European governments are engaged in multi-year programs to reduce their
budget deficits and debt levels. These programs are positive for bonds in that
lower government spending tends to reduce inflationary pressures and lower
issuance of government debt reduces supply pressures on the bond market. In the
Japanese market, powerful deflationary forces have supported a drop in yields to
historically low levels. We now feel this process may be drawing to an end,
given a reversal of priorities at the central bank from fighting inflation,
which is now non-existent, to offsetting the downward spiral of deflation. The
high returns of the U.S. bond market, as measured by the Lehman Brothers
Government Bond Index, have been echoed in other U.S. dollar-bloc markets,
including Australia, New Zealand, and Canada, all of which saw positive
performance over the past year according to Salomon Brothers. Currently, the
Australian market offers significantly higher yields than the U.S. market, and,
we believe, represents good value. As long as the outlook for U.S. bonds remains
positive, these related markets could outperform the U.S. market.

Stock Markets
After some volatility late in the third quarter, the stock market continued to
strengthen. Although many companies reported solid third-quarter results, there
was some weakness in the earnings of retail, financial services and even some
technology companies. However, a slowdown in earnings may be a positive
development if it is an indication that the economy is not overheating and
inflation is under control. While we see a deceleration of corporate earnings as
the inevitable consequence of traditional business cycles, we remain encouraged
by the high absolute level of profitability among U.S. companies. Also, many
companies' increasing emphasis on cost containment and growing use of technology
have helped keep them highly competitive and reasonably profitable. Looking
ahead, we believe that a stabilizing interest rate environment, coupled with
reasonable earnings reports, could justify current market valuations.

Comments from the portfolio manager of this Series are presented on the
following page. We appreciate your support and welcome any questions or comments
you may have.

Respectfully,



/s/ A. Keith Brodkin       /s/ John D. Laupheimer, Jr.       /s/ Kevin R. Parke
- --------------------       --------------------------        ------------------
A. Keith Brodkin           John D. Laupheimer, Jr.           Kevin R. Parke
Chairman and Preside nt    Portfolio Manager                 Portfolio Manager

January 12, 1996
<PAGE>
MFS(R) GROWTH WITH INCOME SERIES

The Growth with Income Series commenced investment operations on October 9,
1995, and provided a total return of +6.64% from this date through December 31,
1995. This compares to a +6.02% return for the S&P 500 for the same period.* The
Series' technology holdings ended the year at a near-market weighting, which is
unusual for our conservative methodology. Another area of overweighting was
industrial goods and services, where we were concentrated in machinery and
aerospace and defense companies.

As we enter 1996, we continue to feel that relative earnings strength will be
the key to superior performance. We have, for example, invested in financial
services, including insurance companies, as well as consumer non-durables and
industrial companies. We have also invested in the retail sector, an area which
has underperformed the S&P 500 for several years. However, we feel stable
companies with solid long-term prospects in this sector can be bought at modest
valuations.

A key to 1996 performance will be judging the effectiveness of the Federal
Reserve's monetary easing. So far, the market has benefited from the overall
reduction in interest rates but, specifically, economically sensitive stocks
have lagged. We feel one of the major challenges of the Series will be to
measure when and how significantly these stocks will respond. As of this
writing, we have not made significant moves in this direction.

PORTFOLIO MANAGER PROFILES

John Laupheimer joined the MFS Research Department in 1981 as an industry
specialist. A graduate of Boston University and the Sloan School of Management
of Massachusetts Institute of Technology, he was named Investment Officer in
1983, Assistant Vice President - Investments in 1984, Vice President Investments
in 1986 and Senior Vice President in 1995.

Kevin R. Parke joined the MFS Research Department in 1985. A graduate of Lehigh
University and the Harvard University Graduate School of Business
Administration, he was named an Assistant Vice President - Investments in 1987,
a Vice President - Investments in 1988, a Senior Vice President in 1993 and
Director of Equity Research in 1995. He and John Laupheimer have managed the MFS
Growth with Income Series since its inception in October 1995.

PERFORMANCE SUMMARY

The information below illustrates the performance of the MFS Growth with Income
Series shares in comparison to a market indicator.

AGGREGATE ANNUAL TOTAL RETURNS
                                                                 10/9/95* -
                                                                 12/31/95
==============================================================================
MFS Growth with Income Series                                      +6.64%
- ------------------------------------------------------------------------------
Standard & Poor's 500 Composite Index+\1/                          +6.02%
- ------------------------------------------------------------------------------

All results are historical and, therefore, are not an indication of future
results. The investment return and principal value of an investment in the
product will vary with changes in market conditions, and shares, when redeemed,
may be worth more or less than their original cost. All Series results reflect
the applicable expense subsidy which is explained in the Notes to Financial
Statements. Had the subsidy not been in effect, the results would have been less
favorable. All Series results do not reflect expenses that would be imposed by
insurance company separate accounts..

  *Commencement of investment operations; benchmark comparisons are from
   September 30, 1995.
  +The Standard & Poor's 500 Index is a popular, unmanaged but commonly used
   measure of common stock total return performance. It is not possible to
   invest in an index.
\1/Source: Lipper Analytical Services, Inc.
<PAGE>
PORTFOLIO OF INVESTMENTS - December 31, 1995
<TABLE>
<CAPTION>
Common Stocks - 92.9%
====================================================================================================
Issuer                                                                  Shares                 Value
- ----------------------------------------------------------------------------------------------------
<S>                                                                     <C>              <C> 
U.S. Stocks - 91.2%
     Aerospace - 9.2%
        Allied Signal, Inc.                                                150           $     7,125
        Lockheed Martin Corp.                                              100                 7,900
        McDonnell Douglas Corp.                                            100                 9,200
        Raytheon Co.                                                       200                 9,450
                                                                                         -----------
                                                                                         $    33,675
- ----------------------------------------------------------------------------------------------------
     Apparel and Textiles - 1.9%
        Nike, Inc., "B"                                                    100           $     6,963
- ----------------------------------------------------------------------------------------------------
     Banks and Credit Companies - 9.3%
        First Bank System, Inc.                                            300           $    14,887
        First Chicago NBD Corp.                                            150                 5,925
        Norwest Corp.                                                      400                13,200
                                                                                         -----------
                                                                                         $    34,012
- ----------------------------------------------------------------------------------------------------
     Consumer Goods and Services - 12.6%
        Colgate- Palmolive Co.                                             100           $     7,025
        Gillette Co.                                                       250                13,031
        Philip Morris Cos., Inc.                                           195                17,647
        Procter & Gamble Co                                                100                 8,300
                                                                                         -----------
                                                                                         $    46,003
- ----------------------------------------------------------------------------------------------------
     Defense Electronics - 2.9%
        Loral Corp.                                                        300           $    10,613
- ----------------------------------------------------------------------------------------------------
     Electrical Equipment - 5.9%
        General Electric Co.                                               200           $    14,400
        Honeywell, Inc.                                                    150                 7,294
                                                                                         -----------
                                                                                         $    21,694
- ----------------------------------------------------------------------------------------------------
     Electronics - 1.6%
     Intel Corp.                                                           100           $     5,675
- ----------------------------------------------------------------------------------------------------
     Financial Institutions- 1.9%
        Benefical Corp.                                                    150           $     6,994
- ----------------------------------------------------------------------------------------------------
     Food and Beverage Product - 7.7%
        CPC International, Inc.                                            150           $    10,293
        PepsiCo, Inc.                                                      150                 8,381
        Ralston-Purina Group                                               150                 9,356
                                                                                         -----------
                                                                                         $    28,030
- ----------------------------------------------------------------------------------------------------
     Forest and Paper Products - 2.3%
        Kimberly-Clark Corp.                                               100           $     8,275
- ----------------------------------------------------------------------------------------------------
<PAGE>
<CAPTION>
PORTFOLIO OF INVESTMENTS - continued

Common Stocks - continued
====================================================================================================
Issuer                                                                  Shares                 Value
- ----------------------------------------------------------------------------------------------------
<S>                                                                     <C>              <C>
U.S. Stocks - continued
     Insurance - 7.3%
        Cigna Corp.                                                         50           $     5,162
        MBIA, Inc.                                                         100                 7,500
        Torchmark Corp.                                                    150                 6,787
        Transamerica Corp.                                                 100                 7,287
                                                                                         -----------
                                                                                         $    26,736
- ----------------------------------------------------------------------------------------------------
     Machinery - 1.5%
        Deere & Co., Inc.                                                  150           $     5,288
- ----------------------------------------------------------------------------------------------------
     Medical and Health Products - 6.7%
        Johnson & Johnson                                                  100           $     8,563
        Pfizer, Inc.                                                       100                 6,300
        Warner-Lambert Co.                                                 100                 9,712
                                                                                         -----------
                                                                                         $    24,575
- ----------------------------------------------------------------------------------------------------
     Oils - 8.8%
        Amoco Corp.                                                        100           $     7,188
        Exxon Corp.                                                        100                 8,013
        Mobil Corp.                                                        150                16,800
                                                                                         -----------
                                                                                         $    32,001
- ----------------------------------------------------------------------------------------------------
     Railroads - 6.0%
        Conrail, Inc.                                                      100           $     7,000
        CSX Corp.                                                          200                 9,125
        Illinois Central Corp.                                             150                 5,756
                                                                                         -----------
                                                                                         $    21,881
- ----------------------------------------------------------------------------------------------------
     Stores - 3.8%
        Dayton-Hudson Corp.                                                100           $     7,500
        May Department Stores Co.                                          150                 6,338
                                                                                         -----------
                                                                                         $    13,838
- ----------------------------------------------------------------------------------------------------
     Utilities - Telephone - 1.8%
        GTE Corp.                                                          150           $     6,600
- ----------------------------------------------------------------------------------------------------
Total U.S. Common Stocks                                                                 $   332,853
- ----------------------------------------------------------------------------------------------------
Foreign Stocks - 1.7%
     Sweden
        Astra AB, Free, "B"                                                150           $     5,953
- ----------------------------------------------------------------------------------------------------
Total Common Stocks (Identified Cost, $318,054)                                          $   338,806
- ----------------------------------------------------------------------------------------------------
Other Assets, Less Liabilities - 7.1%                                                         26,017
====================================================================================================
Net Assets - 100.0%                                                                      $   364,823
- ----------------------------------------------------------------------------------------------------

See notes to financial statements
</TABLE>
<PAGE>
FINANCIAL STATEMENTS
<TABLE>
<CAPTION>

Statement of Assets and Liabilities
========================================================================================================
December 31, 1995
- --------------------------------------------------------------------------------------------------------
<S>                                                                                        <C>
Assets:
   Investments, at value (identified cost, $318,054)                                       $     338,806
   Cash                                                                                           24,044
   Dividends receivable                                                                              880
   Receivable from investment adviser                                                              5,546
   Deferred organization expenses                                                                  8,765
                                                                                           -------------
         Total assets                                                                      $     378,041
                                                                                           -------------
Liabilities:
   Payable to affiliate for management fee                                                 $          22
   Accrued expenses and other liabilities                                                         13,196
                                                                                           -------------
         Total liabilities                                                                 $      13,218
                                                                                           -------------
Net assets                                                                                 $     364,823
                                                                                           -------------
Net assets consist of:
   Paid-in capital                                                                         $     344,071
   Unrealized appreciation on investments                                                         20,752
                                                                                           -------------
         Total                                                                             $     364,823
                                                                                           =============
Shares of beneficial interest outstanding                                                        34,402
                                                                                           =============
Net asset value, offering price and redemption price per share
   (net assets of $364,823 / 34,402 shares of beneficial interest outstanding)                $10.61
                                                                                           =============
</TABLE>

See notes to financial statements
<PAGE>
FINANCIAL STATEMENTS  -  continued

<TABLE>
<CAPTION>
Statement of Operations
========================================================================================================
Period Ended December 31, 1995*
- --------------------------------------------------------------------------------------------------------
<S>                                                                                          <C>
Net investment income:
   Income -
      Dividends                                                                              $     1,890
      Interest                                                                                       653
                                                                                             -----------
         Total investment income                                                             $     2,543
                                                                                             -----------
   Expenses -
      Management fee                                                                         $       597
      Trustees' compensation                                                                         508
      Shareholder servicing agent fee                                                                 33
      Auditing fees                                                                               10,507
      Printing                                                                                     4,032
      Legal fees                                                                                     682
      Amortization of organization expenses                                                          423
      Custodian fee                                                                                   10
      Miscellaneous                                                                                  230
                                                                                             -----------
         Total expenses                                                                      $    17,022
      Reduction of expenses by investment adviser                                                (16,226)
                                                                                             -----------
         Net expenses                                                                        $       796
                                                                                             -----------
            Net investment income                                                            $     1,747
                                                                                             -----------
Realized and unrealized gain on investments:
   Realized gain (identified cost basis) -
      Investment transactions                                                                $        42
      Foreign currency transactions                                                                    5
                                                                                             -----------
         Net realized gain on investments and foreign currency transactions                  $        47
   Change in unrealized appreciation on investments                                               20,752
                                                                                             -----------
         Net realized and unrealized gain and foreign currency                               $    20,799
                                                                                             -----------
               Increase in net assets from operations                                        $    22,546
                                                                                             ===========

*For the period from the commencement of investment operations, October 9, 1995 to December 31, 1995.

</TABLE>
See notes to financial statements
<PAGE>
FINANCIAL STATEMENTS  -  continued
<TABLE>
<CAPTION>
Statement of Changes in Net Assets
========================================================================================================
Period Ended December 31, 1995*
- --------------------------------------------------------------------------------------------------------
<S>                                                                                         <C>
Increase (decrease) in net assets:
From operations -
   Net investment income                                                                     $     1,747
   Net realized gain on investments and foreign currency transactions                                 47
   Net unrealized gain on investments                                                             20,752
                                                                                             -----------
      Increase in net assets from operations                                                 $    22,546
                                                                                             -----------
Distributions declared to shareholders -
   From net investment income                                                                $    (1,794)
   In excess of net investment income                                                                (20)
   Tax return of capital                                                                             (35)
                                                                                             -----------
      Total distributions declared to shareholders                                           $    (1,849)
                                                                                             -----------
Series share (principal) transactions -
   Net proceeds from sale of shares                                                          $   338,677
   Net asset value of shares issued to shareholders in reinvestment
      of distributions                                                                             1,849
   Cost of shares reacquired                                                                      (5,000)
                                                                                             -----------
      Increase in net assets from Series share transactions                                  $   335,526
                                                                                             -----------
         Total increase in net assets                                                        $   356,223
Net assets:
   At beginning of period                                                                          8,600
                                                                                             -----------
   At end of period                                                                          $   364,823
                                                                                             ===========

*For the period from the commencement of investment operations, October 9, 1995 to December 31, 1995.
</TABLE>

See notes to financial statements
<PAGE>
FINANCIAL STATEMENTS  -  continued

<TABLE>
<CAPTION>
Financial Highlights
- --------------------------------------------------------------------------------------------------------
Period Ended December 31, 1995*
- --------------------------------------------------------------------------------------------------------
<S>                                                                                         <C>
Per share data (for a share outstanding throughout the period):
Net asset value - beginning of period                                                       $  10.00
                                                                                           ----------
Income from investment operations# -
   Net investment income{s}                                                                 $   0.05
   Net realized and unrealized gain on investments                                              0.61
                                                                                           ----------
         Total from investment operations                                                   $   0.66
                                                                                           ----------
Less distributions declared to shareholders -
   From net investment income                                                               $  (0.05)
                                                                                           ----------
         Total distributions declared to shareholders                                       $  (0.05)
                                                                                           ----------
Net asset value - end of period                                                             $  10.61
                                                                                           ----------
Total return 6.64%++ Ratios (to average net assets)/Supplemental data{S}:
   Expenses                                                                                     1.00%+
   Net investment income                                                                        2.20%+
Portfolio turnover                                                                                 2%
Net assets at end of period (000 omitted)                                                       $365

  *For the period from the commencement of investment operations, October 9, 1995 to December 31, 1995.
  +Annualized.
 ++Not annualized.
  #Per share data is based on average shares outstanding.
{S}The adviser voluntarily agreed to maintain the expenses of the Series at
   not more than 1.00% of average daily net assets. To the extent actual
   expenses were over these limitations, the net investment loss per share and
   the ratios would have been:

      Net investment loss                                                                     $(0.04)
      Ratios (to average net assets):
         Expenses                                                                              21.44%+
         Net investment loss                                                                  (18.24)%+
</TABLE>

See notes to financial statements
<PAGE>

NOTES TO FINANCIAL STATEMENTS

(1) Business and Organization
MFS Growth With Income Series (the Series) is a diversified series of MFS
Variable Insurance Trust (the Trust) which is comprised of the following twelve
series: MFS Bond Series, MFS Emerging Growth Series, MFS Growth Series, MFS
Growth with Income Series, MFS High Income Series, MFS Limited Maturity Series,
MFS Money Market Series, MFS Research Series, MFS Strategic Fixed Income Series,
MFS Total Return Series, MFS Utilities Series and MFS World Governments Series.
The Trust is organized as a Massachusetts business trust and is registered under
the Investment Company Act of 1940, as amended, as an open-end management
investment company.

The shareholders of each Series of the Trust are separate accounts of insurance
companies which offer variable annuity and/or life insurance products. The
Series was seeded on or about February 1, 1994, but remained inactive until the
current period. The commencement of investment operations took place on October
9, 1995. As of December 31, 1995 there were five shareholders in the Series.

(2) Significant Accounting Policies
Investment Valuations - Equity securities listed on securities exchanges or
reported through the NASDAQ system are valued at last sale prices. Unlisted
equity securities or listed equity securities for which last sale prices are not
available are valued at last quoted bid prices. Debt securities (other than
short-term obligations which mature in 60 days or less), including listed
issues, are valued on the basis of valuations furnished by dealers or by a
pricing service with consideration to factors such as institutional-size trading
in similar groups of securities, yield, quality, coupon rate, maturity, type of
issue, trading characteristics and other market data, without exclusive reliance
upon exchange or over-the-counter prices. Short-term obligations, which mature
in 60 days or less, are valued at amortized cost, which approximates market
value. Securities for which there are no such quotations or valuations are
valued at fair value as determined in good faith by or at the direction of the
Trustees.

Repurchase Agreements - The Series may enter into repurchase agreements with
institutions that the Series' investment adviser has determined are
creditworthy. Each repurchase agreement is recorded at cost. The Series requires
that the securities purchased in a repurchase transaction be transferred to the
custodian in a manner sufficient to enable the Series to obtain those securities
in the event of a default under the repurchase agreement. The Series monitors,
on a daily basis, the value of the securities transferred to ensure that the
value, including accrued interest, of the securities under each repurchase
agreement is greater than amounts owed to the Series under each such repurchase
agreement.

Foreign Currency Translation - Investment valuations, other assets, and
liabilities initially expressed in foreign currencies are converted each
business day into U.S. dollars based upon current exchange rates. Purchases and
sales of foreign investments, income and expenses are converted into U.S.
dollars based upon currency exchange rates prevailing on the respective dates of
such transactions. Gains and losses attributable to foreign currency exchange
rates on sales of securities are recorded for financial statement purposes as
net realized gains and losses on investments. Gains and losses attributable to
foreign exchange rate movements on income and expenses are recorded for
financial statement purposes as foreign currency transaction gains and losses.
That portion of both realized and unrealized gains and losses on investments
that results from fluctuations in foreign currency exchange rates is not
separately disclosed.

Deferred Organization Expenses - Costs incurred by the Series in connection with
its organization have been deferred and are being amortized on a straight-line
basis over a five-year period beginning on the date of commencement of
investment operations of the Series.

Forward Foreign Currency Exchange Contracts - The Series may enter into forward
foreign currency exchange contracts for the purchase or sale of a specific
foreign currency at a fixed price on a future date. Risks may arise upon
entering these contracts from the potential inability of counterparties to meet
the terms of their contracts and from unanticipated movements in the value of a
foreign currency relative to the U.S. dollar. The Series will enter into forward
contracts for hedging purposes as well as for non-hedging purposes. For hedging
purposes, the Series may enter into contracts to deliver or receive foreign
currency it will receive from or require for its normal investment activities.
It may also use contracts in a manner intended to protect foreign
currency-denominated securities from declines in value due to unfavorable
exchange rate movements. For non-hedging purposes, the Series may enter into
contracts with the intent of changing the relative exposure of the Series'
portfolio of securities to different currencies to take advantage of anticipated
changes. The forward foreign currency exchange contracts are adjusted by the
daily exchange rate of the underlying currency and any gains or losses are
recorded for financial statement purposes as unrealized until the contract
settlement date.

Investment Transactions and Income - Investment transactions are recorded on the
trade date. Interest income is recorded on the accrual basis. All premium and
original issue discount are amortized or accreted for financial statement and
tax reporting purposes as required by federal income tax regulations. Dividend
income is recorded on the ex-dividend date for dividends received in cash.
Dividend and interest payments received in additional securities are recorded on
the ex-dividend or ex-interest date in an amount equal to the value of the
security on such date.

Tax Matters and Distributions - The Series' policy is to comply with the
provisions of the Internal Revenue Code (the Code) applicable to regulated
investment companies and to distribute to shareholders all of its taxable
income, including any net realized gain on investments. Accordingly, no
provision for federal income or excise tax is provided. The Series files a tax
return annually using tax accounting methods required under provisions of the
Code which may differ from generally accepted accounting principles, the basis
on which these financial statements are prepared. Accordingly, the amount of net
investment income and net realized gain reported on these financial statements
may differ from that reported on the Series' tax return. Distributions to
shareholders are recorded on the ex-dividend date.

The Series distinguishes between distributions on a tax basis and a financial
reporting basis and requires that only distributions in excess of tax basis
earnings and profits are reported in the financial statements as a return of
capital. Differences in the recognition or classification of income between the
financial statements and tax earnings and profits which result in temporary
over-distributions for financial statement purposes, are classified as
distributions in excess of net investment income or accumulated net realized
gains.

(3) Transactions with Affiliates
Investment Adviser - The Series has an investment advisory agreement with
Massachusetts Financial Services Company (MFS) to provide overall investment
advisory and administrative services, and general office facilities. The
management fee is computed daily and paid monthly at an effective annual rate of
0.75% of its average daily net assets. Under a temporary expense reimbursement
agreement with MFS, MFS has voluntarily agreed to limit the operating expenses
of the Series at levels which increase over time. Currently, MFS agreed to limit
the Series' expenses at an effective annual rate of 1.00% of its average daily
net assets. MFS will pay all Series expenses in excess of the current limit
subject to reimbursement by the Series at a later date. To the extent that
actual Series expenses do not reach the limit, the Series will reimburse MFS for
prior expenses paid by MFS on behalf of the Series such that the Series' expense
ratio does not exceed 1.00% of its average daily net assets. As of December 31,
1995, the aggregate unreimbursed expenses owed to MFS by the Series amounted to
$16,226.

The Series pays no compensation directly to its Trustees who are officers of the
investment adviser, or to officers of the Series, all of whom receive
remuneration for their services to the Series from MFS. Certain of the officers
and Trustees of the Series are officers or directors of MFS and MFS Service
Center, Inc. (MFSC).

Shareholder Servicing Agent - MFSC, a wholly owned subsidiary of MFS, earns a
fee for its services as shareholder servicing agent. The fee is calculated as a
percentage of the average daily net assets at an effective annual rate of up to
0.035%.

(4) Portfolio Securities
Purchases and sales of investments, other than U.S. government securities,
purchased option transactions and short-term obligations, aggregated $324,422
and $6,410, respectively.

The cost and unrealized appreciation or depreciation in value of the investments
owned by the Series, as computed on a federal income tax basis, are as follows:

Aggregate cost                                                       $  318,054
                                                                     ==========
Gross unrealized appreciation                                        $   24,027
Gross unrealized depreciation                                            (3,275)
                                                                     ----------
  Net unrealized appreciation                                        $   20,752
                                                                     ==========

(5) Shares of Beneficial Interest
The Trust's Declaration of Trust permits the Trustees to issue an unlimited
number of full and fractional shares of beneficial interest (without par value).
Transactions in Series shares were as follows:

Period Ended December 31, 1995*                        Shares         Amount
=============================================================================
Shares sold                                            33,867    $   338,677
Shares issued to shareholders in
  reinvestment of distributions                           175          1,849
Shares reacquired                                        (500)        (5,000)
                                                  -----------    -----------
  Net increase                                         33,542    $   335,526
                                                  ===========    ===========

*For the period from commencement of investment operations, October 9, 1995 to
 December 31, 1995.

(6) Line of Credit
The Series entered into an agreement which enables it to participate with other
funds managed by MFS in an unsecured line of credit with a bank which permits
borrowings up to $350 million, collectively. Borrowings may be made to
temporarily finance the repurchase of Series shares. Interest is charged to each
fund, based on its borrowings, at a rate equal to the bank's base rate. In
addition, a commitment fee, based on the average daily unused portion of the
line of credit, is allocated among the participating funds at the end of each
quarter.
<PAGE>
INDEPENDENT AUDITORS' REPORT

To the Trustees of MFS Variable Insurance Trust and Shareholders of MFS Growth
with Income Series:

We have audited the accompanying statement of assets and liabilities, including
the portfolio of investments, of MFS Growth with Income Series (the Series) (one
of the series constituting MFS Variable Insurance Trust) as of December 31,
1995, the related statements of operations and changes in net assets and the
financial highlights for the period from October 9, 1995 (the commencement of
investment operations) to December 31, 1995. These financial statements and
financial highlights are the responsibility of the Series' management. Our
responsibility is to express an opinion on these financial statements and
financial highlights based on our audits.

We conducted our audits 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 and financial
highlights are free of material misstatement. An audit includes examining, on a
test basis, evidence supporting the amounts and disclosures in the financial
statements. Our procedures included confirmation of the securities owned at
December 31, 1995 by correspondence 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 audits provide a reasonable basis for our opinion.

In our opinion, such financial statements and financial highlights present
fairly, in all material respects, the financial position of MFS Growth with
Income Series at December 31, 1995, the results of its operations, the changes
in its net assets and its financial highlights for the stated period in
conformity with generally accepted accounting principles.

DELOITTE & TOUCHE LLP

Boston, Massachusetts
February 2, 1996







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

This report is prepared for the general information of shareholders. It is
authorized for distribution to prospective investors only when preceded or
accompanied by a current prospectus
<PAGE>



                                                             VGI-2-2/96/5.5M




<PAGE>
[LOGO]                                                       Annual Report for
THE FIRST NAME IN MUTUAL FUNDS                                      Year Ended
                                                             December 31, 1995


MFS(R) TOTAL RETURN SERIES
A Series of MFS(R) Variable Insurance Trust
<PAGE>
MFS(R) TOTAL RETURN SERIES
A SERIES OF MFS(R) VARIABLE INSURANCE TRUST

TRUSTEES
A. Keith Brodkin*
Chairman and President

Nelson J. Darling, Jr.
Trustee, Eastern Enterprises
(diversified holding company)

William R. Gutow
Vice Chairman,
Capitol Entertainment
(Blockbuster Video Franchise)

PORTFOLIO MANAGER
David Calabro*
(Head of Portfolio Management Team)

TREASURER
W. Thomas London*

ASSISTANT TREASURER
James O. Yost*

SECRETARY
Stephen E. Cavan*

ASSISTANT SECRETARY
James R. Bordewick, Jr.*

INVESTMENT ADVISER
Massachusetts Financial Services Company
500 Boylston Street
Boston, MA 02116-3741

DISTRIBUTOR
MFS Fund Distributors, Inc.
500 Boylston Street
Boston, MA 02116-3741

SHAREHOLDER SERVICE CENTER
MFS Service Center, Inc.
P.O. Box 1400
Boston, MA 02107-9906

For additional information, contact your financial adviser.

CUSTODIAN
Investors Bank & Trust Company

AUDITORS
Deloitte & Touche LLP


*Affiliated with the Investment Adviser
<PAGE>
Dear Contract Owner:
An environment of declining interest rates and a favorable outlook for inflation
helped establish a pattern of positive performance in both fixed-income and
equity markets around the world during the past 12 months. Yields on many
fixed-income securities continued to decline throughout the year, and as bond
prices rose in response to these declines, all of the fixed-income investments
in the Trust experienced positive total returns. At the same time, lower
interest rates and strong corporate earnings reports through most of the year
helped the prices of many stocks to rise over the period, producing strong
returns. For the 12 months ended December 31, 1995, the U.S. stock market, as
measured by the Standard & Poor's 500 Composite Index (the S&P 500), a popular,
unmanaged index of common stock performance, returned +37.53%. All of the series
in the Trust which invest in equity securities participated in this favorable
performance and achieved positive total returns.

U.S. Outlook
Moderate but sustainable growth was the hallmark of the economic expansion's
fifth year, although some signs of sluggishness were evident late in the year.
Recent retail sales, for example, have been disappointing, in part because of
rising levels of consumer debt. In addition, growth is not expected to get much
help from the manufacturing sector as order flows from manufacturers have
moderated. Export activity, meanwhile, is also expected to remain modest as
continued weakness abroad limits demand for many U.S. goods. However, the
Federal Reserve Board's consistent and, so far, successful efforts to fight
inflation seem to be giving consumers and businesses enough longer-term
confidence to help maintain modest growth in real (adjusted for inflation) gross
domestic product into 1996.

Global Outlook
A pattern of slow to moderate growth and low and controlled inflation remains a
dominant theme in major industrialized countries, including the United States.
While the recent recovery of the dollar against the German mark and the Japanese
yen has added some strength to the economies of Europe and Japan, the outlook is
for sluggish economic growth, in the near term at least. And although moves by
central banks in Germany and Japan to lower interest rates have helped stimulate
domestic demand, many industrial companies in these countries are still
struggling to compete in a global marketplace in which the prices of their
products are less competitively priced. On the positive side, this does mean
little to no inflationary pressure in these countries, and we believe that this,
combined with further reductions in interest rates, could help provide a
foundation for stronger economic growth in the long run. Also, we believe that
many of the cost-cutting measures taken by companies in these countries over the
past few years will ultimately provide earnings leverage when economic growth
improves. Inflation in most overseas economies remains in a downward trend,
providing fixed-income investors with opportunities for relatively attractive
real rates of interest, possibly accompanied by moderate price appreciation.
While the dollar continues to represent a sound store of long-term value, its
relative strength in the near term is being restrained by the persistent U.S.
current-account deficit.

Bond Markets
Given the recent signs of economic weakness, prospects for the Federal Reserve
Board's further decreasing short-term interest rates are good. Long-term rates,
meanwhile, moved noticeably downward in the latter months of 1995 in
anticipation of more modest fourth-quarter growth with continued low inflation.
While there were some increases in commodity prices early in the year, companies
found it difficult to pass these on at the consumer level as they continue to
fight for market share. Additionally, unit labor costs remain under control and
seem to be growing at a pace that is near or below the ongoing inflation rate.
Thus, with long-term U.S. government bonds yielding approximately 6% in an
environment of 2% to 3% inflation, real rates of return in the fixed-income
markets remain relatively attractive.

In world bond markets, slowing economic growth, low inflation, and declining
official interest rates helped result in solid performance during the past 12
months. European governments are engaged in multi-year programs to reduce their
budget deficits and debt levels. These programs are positive for bonds in that
lower government spending tends to reduce inflationary pressures and lower
issuance of government debt reduces supply pressures on the bond market. In the
Japanese market, powerful deflationary forces have supported a drop in yields to
historically low levels. We now feel this process may be drawing to an end,
given a reversal of priorities at the central bank from fighting inflation,
which is now non-existent, to offsetting the downward spiral of deflation. The
high returns of the U.S. bond market, as measured by the Lehman Brothers
Government Bond Index, have been echoed in other U.S. dollar-bloc markets,
including Australia, New Zealand, and Canada, all of which saw positive
performance over the past year according to Salomon Brothers. Currently, the
Australian market offers significantly higher yields than the U.S. market, and,
we believe, represents good value. As long as the outlook for U.S. bonds remains
positive, these related markets could outperform the U.S. market.

Stock Markets
After some volatility late in the third quarter, the stock market continued to
strengthen. Although many companies reported solid third-quarter results, there
was some weakness in the earnings of retail, financial services and even some
technology companies. However, a slowdown in earnings may be a positive
development if it is an indication that the economy is not overheating and
inflation is under control. While we see a deceleration of corporate earnings as
the inevitable consequence of traditional business cycles, we remain encouraged
by the high absolute level of profitability among U.S. companies. Also, many
companies' increasing emphasis on cost containment and growing use of technology
have helped keep them highly competitive and reasonably profitable. Looking
ahead, we believe that a stabilizing interest rate environment, coupled with
reasonable earnings reports, could justify current market valuations.

Comments from the head of the portfolio management team of this Series are
presented on the following page. We appreciate your support and welcome any
questions or comments you may have.

Respectfully,




/s/ A. Keith Brodkin                      /s/ David Calabro
- ----------------------                    -------------------
A. Keith Brodkin                          David Calabro
Chairman and President                    Head of the Portfolio Management Team


January 12, 1996
<PAGE>
MFS(R) TOTAL RETURN SERIES

For the past twelve months, the Series provided a total return of +27.34%. This
compares to a +24.61% return for the Lipper Balanced Fund Index.

We believe the current environment warrants a conservative investment posture.
Economies in both the United States and Europe remain sluggish, and revenue
growth for many major corporations has slowed. Earnings growth, a key driver to
stock prices, also has slowed over the past few quarters. In addition,
valuations are on the high side, especially with the S&P 500 dividend yield at
just 2.4%.

Therefore, we are carrying a below-normal equity allocation. Common stocks have
represented approximately 55% of the Series over the past several months. Our
major concentrations remain in the energy and financial services sectors, where
fundamentals and valuations appear sound. We are also finding some good values
in the telephone industry, the electric utility industry and the
defense/aerospace industry.

The bond portion has ranged close to 30% of the Series, while cash has been
approximately 10%. Our duration remains around six years, and corporate bonds
make up the majority of the Series. However, we have recently been adding more
Treasury securities.

PROFILE

David Calabro heads a team of portfolio managers for the MFS Total Return
Series. He is Vice President - Investments and manages the equity portion of the
Series along with Judith N. Lamb, Vice President - Investments, Lisa B. Nurme,
Vice President - Investments and Maura Shaughnessy, Vice President -
Investments. Geoffrey L. Kurinsky, Senior Vice President - Investments, manages
the fixed-income portion of the Series and has been with MFS since 1987. Mr.
Calabro has been with MFS since 1992. Ms. Lamb has been with MFS since 1992. Ms.
Nurme has been with MFS since 1987. Ms. Shaughnessy has been with MFS since
1991. This portfolio management team has managed the MFS Total Return Series
since July 1995.
<PAGE>
PERFORMANCE SUMMARY

The information below illustrates the historical performance of MFS Total Return
Series shares in comparison to various market indicators. Series results do not
reflect the deduction of any applicable surrender charge. Benchmark comparisons
are unmanaged and do not reflect any fees or expenses. You cannot invest in an
index. All results reflect the reinvestment of all dividends and capital gains.

GROWTH OF A HYPOTHETICAL $10,000 INVESTMENT
(For the Period from January 3, 1995* to December 31, 1995)

          MFS       Lipper
          Total     Balanced  Consumer
          Return    Funds     Price
Date      Series    Index     Indes
- ----      ------    --------  --------
01/03/95  10,000    10,000    10,000
01/31/95  10,500    10,100    10,040
02/95     10,400    10,400    10,080
03/95     10,600    10,600    10,100
04/95     10,800    10,800    10,140
05/95     11,200    11,100    10,160
06/95     11,300    11,300    10,180
07/95     11,400    11,600    10,180
08/95     11,600    11,700    10,210
09/95     11,960    11,950    10,230
10/95     11,900    11,920    10,260
11/95     12,500    12,300    10,260
12/31/95  12,734    12,461    10,254


AGGREGATE TOTAL RETURNS                                              1/03/95* -
                                                                     12/31/95
===============================================================================
MFS Total Return Series                                              +27.34%
- -------------------------------------------------------------------------------
Lipper Balanced Fund Index#\1/                                       +24.61%
- -------------------------------------------------------------------------------
Consumer Price Index{S}\1/                                           + 2.54%
- -------------------------------------------------------------------------------

All results are historical and, therefore, are not an indication of future
results. The investment return and principal value of an investment in the
product will vary with changes in market conditions, and shares, when redeemed,
may be worth more or less than their original cost. All Series results reflect
the applicable expense subsidy which is explained in the Notes to Financial
Statements. Had the subsidy not been in effect, the results would have been less
favorable. All Series results do not reflect expenses that would be imposed by
insurance company separate accounts.

  *Commencement of investment operations.
  #Lipper indices are equally weighted composites of the largest qualifying
   mutual funds within their respective investment objective; adjusted for
   reinvestment of distributions.
{S}The Consumer Price Index is a popular measure of change in prices.
\1/Source: Lipper Analytical Services, Inc.
<PAGE>
PORTFOLIO OF INVESTMENTS - December 31, 1995

<TABLE>
<CAPTION>
Non-Convertible Bonds - 28.5%
- -----------------------------------------------------------------------------------------------------
                                                                      Principal Amount
Issuer                                                                   (000 Omitted)          Value
- -----------------------------------------------------------------------------------------------------
<S>                                                                          <C>         <C>         
U.S. Treasury Obligations - 28.5%
      U.S. Treasury Notes, 7.125s, 1999                                      $     300   $    318,093
      U.S. Treasury Notes, 6.125s, 2000                                            300        309,000
      U.S. Treasury Bonds, 6.875s, 2025                                            150        169,171
- -----------------------------------------------------------------------------------------------------
Total Non-Convertible Bonds (Identified Cost, $758,409)                                  $    796,264
- -----------------------------------------------------------------------------------------------------

Convertible Bonds - 1.9%
- -----------------------------------------------------------------------------------------------------
      ADT Operations, Inc., 0s, 2010 (Electronics)                           $      40   $     18,800
      Time Warner, Inc., 8.75s, 2015 (Entertainment)                                11         11,385
      Valhi, Inc., 0s, 2007 (Chemicals)                                             63         23,546
- -----------------------------------------------------------------------------------------------------
Total Convertible Bonds (Identified Cost, $48,214)                                       $     53,731
- -----------------------------------------------------------------------------------------------------

<CAPTION>
Common Stocks - 54.6%
- -----------------------------------------------------------------------------------------------------
                                                                                Shares
- -----------------------------------------------------------------------------------------------------
<S>                                                                              <C>     <C>         
U.S. Stocks - 51.8%
    Aerospace - 1.9%
      Allied Signal, Inc.                                                          400   $     19,000
      Raytheon Co.                                                                 300         14,175
      United Technologies Corp.                                                    200         18,975
                                                                                         ------------
                                                                                         $     52,150
- -----------------------------------------------------------------------------------------------------
    Automotive - 1.4%
      Dana Corp.                                                                   200   $      5,850
      Ford Motor Co.                                                               200          5,800
      General Motors Corp.                                                         500         26,438
                                                                                         ------------
                                                                                         $     38,088
- -----------------------------------------------------------------------------------------------------
    Banks and Credit Companies - 6.0%
      Bank of New York, Inc.                                                       600   $     29,250
      BankAmerica Corp.                                                            400         25,900
      Chase Manhattan Corp.                                                        400         24,250
      Comerica, Inc.                                                               400         16,050
      Fleet Financial Group, Inc.                                                  200          8,150
      National City Corp.                                                          800         26,500
      NationsBank Corp.                                                            300         20,888
      Northern Trust Co.                                                           300         16,800
                                                                                         ------------
                                                                                         $    167,788
- -----------------------------------------------------------------------------------------------------
   Business Machines - 0.5%
      Xerox Corp.                                                                  100   $     13,700
- -----------------------------------------------------------------------------------------------------
<PAGE>
<CAPTION>
PORTFOLIO OF INVESTMENTS - continued

Common Stocks - continued
- -----------------------------------------------------------------------------------------------------
Issuer                                                                          Shares          Value
- -----------------------------------------------------------------------------------------------------
<S>                                                                              <C>     <C>         
U.S. Stocks - continued
   Chemicals - 1.3%
      Dow Chemical Co.                                                             200   $     14,075
      du Pont (E. I.) de Nemours & Co.                                             300         20,963
                                                                                         ------------
                                                                                         $     35,038
- -----------------------------------------------------------------------------------------------------
   Conglomerates - 0.5%
      Eastern Enterprises                                                          400   $     14,100
- -----------------------------------------------------------------------------------------------------
   Consumer Goods and Services - 2.5%
      Colgate-Palmolive Co.                                                        300   $     21,075
      Philip Morris Cos., Inc.                                                     500         45,250
      Rubbermaid, Inc.                                                             100          2,550
                                                                                         ------------
                                                                                         $     68,875
- -----------------------------------------------------------------------------------------------------
   Defense Electronics - 0.9%
      Loral Corp.                                                                  700   $     24,762
- -----------------------------------------------------------------------------------------------------
   Electrical Equipment - 2.1%
      General Electric Co.                                                         400   $     28,800
      Honeywell, Inc.                                                              600         29,175
                                                                                         ------------
                                                                                         $     57,975
- -----------------------------------------------------------------------------------------------------
   Financial Institutions - 0.9%
      Federal Home Loan Mortgage Corp.                                             300   $     25,050
- -----------------------------------------------------------------------------------------------------
   Food and Beverage Products - 1.7%
      Anheuser-Busch Cos., Inc.                                                    100   $      6,687
      General Mills, Inc.                                                          300         17,325
      Kellogg Co.                                                                  100          7,725
      McCormick & Co., Inc.                                                        200          4,825
      PepsiCo, Inc.                                                                200         11,175
                                                                                         ------------
                                                                                         $     47,737
- -----------------------------------------------------------------------------------------------------
   Forest and Paper Products - 0.5%
      Weyerhaeuser Co.                                                             300   $     12,975
- -----------------------------------------------------------------------------------------------------
   Insurance - 3.4%
      Aetna Life & Casualty Co.                                                    200   $     13,850
      CIGNA Corp.                                                                  100         10,325
      GCR Holdings Ltd.*                                                           100          2,250
      Prudential Reinsurance Holdings, Inc.                                        500         11,687
      St. Paul Cos., Inc.                                                          300         16,687
      Torchmark Corp.                                                              500         22,625
      Transport Holdings, Inc., "A"*                                                 1             41
      Travelers, Inc.                                                              300         18,863
                                                                                         ------------
                                                                                         $     96,328
- -----------------------------------------------------------------------------------------------------
   Machinery - 1.9%
      Deere & Co., Inc.                                                            600   $     21,150
      Ingersoll Rand Co.                                                           500         17,562
      York International Corp.                                                     300         14,100
                                                                                         ------------
                                                                                         $     52,812
- -----------------------------------------------------------------------------------------------------
<PAGE>
<CAPTION>
PORTFOLIO OF INVESTMENTS - continued

Common Stocks - continued
- -----------------------------------------------------------------------------------------------------
Issuer                                                                          Shares          Value
- -----------------------------------------------------------------------------------------------------
<S>                                                                              <C>     <C>         
U.S. Stocks -  continued
   Medical and Health Products - 1.9%
      American Home Products Corp.                                                 300   $     29,100
      Baxter International, Inc.                                                   600         25,125
                                                                                         ------------
                                                                                         $     54,225
- -----------------------------------------------------------------------------------------------------
   Metals and Minerals - 0.2%
      Phelps Dodge Corp.                                                           100   $      6,225
- -----------------------------------------------------------------------------------------------------
   Oil Services - 0.7%
      Schlumberger Ltd.                                                            300   $     20,775
- -----------------------------------------------------------------------------------------------------
   Oils - 5.6%
      Amoco Corp.                                                                  500   $     35,937
      Exxon Corp.                                                                  400         32,050
      Mobil Corp.                                                                  300         33,600
      Occidental Petroleum Corp.                                                   700         14,963
      USX- Marathon Group                                                        1,200         23,400
      Ultramar Corp.                                                               500         12,875
      Union Pacific Resources Group, Inc.                                          100          2,538
                                                                                         ------------
                                                                                         $    155,363
- -----------------------------------------------------------------------------------------------------
   Photographic Products - 1.4%
      Eastman Kodak Co.                                                            600   $     40,200
- -----------------------------------------------------------------------------------------------------
   Pollution Control - 0.4%
      WMX Technologies, Inc.                                                       400   $     11,950
- -----------------------------------------------------------------------------------------------------
   Printing and Publishing - 0.5%
      Dun Bradstreet Corp.                                                         200   $     12,950
- -----------------------------------------------------------------------------------------------------
   Railroads - 0.6%
      CSX Corp.                                                                    400   $     18,250
- -----------------------------------------------------------------------------------------------------
   Real Estate Investment Trusts - 0.8%
      Hospitality Properties Trust                                                 800   $     21,400
- -----------------------------------------------------------------------------------------------------
   Special Products and Services - 0.8%
      Minnesota Mining & Manufacturing Co.                                         100   $      6,625
      Stanley Works                                                                300         15,450
                                                                                         ------------
                                                                                         $     22,075
- -----------------------------------------------------------------------------------------------------
   Stores - 1.1%
      May Department Stores Co.                                                    300   $     12,675
      Sears, Roebuck & Co.                                                         500         19,500
                                                                                         ------------
                                                                                         $     32,175
- -----------------------------------------------------------------------------------------------------
   Utilities - Electric - 2.7%
      FPL Group, Inc.                                                              500   $     23,187
      PECO Energy Co.                                                              600         18,075
      Portland Gen Corp.                                                           700         20,388
      Unicom Corp.                                                                 400         13,100
                                                                                         ------------
                                                                                         $     74,750
- -----------------------------------------------------------------------------------------------------
   Utilities - Gas - 4.2%
      Coastal Corp.                                                                600   $     22,350
      Enron Corp.                                                                  500         19,062
      Pacific Enterprises                                                        1,000         28,250
      Sonat, Inc.                                                                  500         17,813
      Williams Cos., Inc.                                                          700         30,713
                                                                                         ------------
                                                                                         $    118,188
- -----------------------------------------------------------------------------------------------------
<PAGE>
<CAPTION>
PORTFOLIO OF INVESTMENTS - continued

Common Stocks - continued
- -----------------------------------------------------------------------------------------------------
Issuer                                                                          Shares          Value
- -----------------------------------------------------------------------------------------------------
<S>                                                                              <C>     <C>         
U.S. Stocks -  continued
   Utilities - Telephone - 5.4%
      AT&T Corp.                                                                   600   $     38,850
      Ameritech Corp.                                                              300         17,700
      Frontier Corp.                                                               700         21,000
      GTE Corp.                                                                    600         26,400
      MCI Communications Corp.                                                     800         20,900
      NYNEX Corp.                                                                  500         27,000
                                                                                         ------------
                                                                                         $    151,850
- -----------------------------------------------------------------------------------------------------
Total U.S. Stocks                                                                        $  1,447,754
- -----------------------------------------------------------------------------------------------------
Foreign Stocks - 2.8%
   Canada - 0.3%
      Canadian National Railway Co. (Railroads)*                                   500   $      7,500
- -----------------------------------------------------------------------------------------------------
   Netherlands - 1.0%
      Royal Dutch Petroleum Co. (Oils)                                             200   $     28,225
- -----------------------------------------------------------------------------------------------------
   United Kingdom - 1.5%
      British Petroleum PLC, ADR (Oils)                                            200   $     20,425
      National Power PLC, ADR (Utilities - Electric)                               100            240
      SmithKline Beecham PLC, ADR (Medical and Health Products)                    400         22,200
                                                                                         ------------
                                                                                         $     42,865
- -----------------------------------------------------------------------------------------------------
Total Foreign Stocks                                                                     $     78,590
- -----------------------------------------------------------------------------------------------------
Total Common Stocks (Identified Cost, $1,322,548)                                        $  1,526,344
- -----------------------------------------------------------------------------------------------------

Convertible Preferred Stocks - 2.0%
=====================================================================================================
      Allstate Corp., 2.281% (Insurance)                                           400   $     16,400
      Browning-Ferris Industries, 7.25% (Precious Metals and Minerals)*            400         12,550
      Enron Corp. (Utilities - Gas)                                                500         12,000
      SCI Finance LLC, "A", $3.125 (Medical and Health
       Technology and Services)                                                    200         14,800
- -----------------------------------------------------------------------------------------------------
Total Convertible Preferred Stocks (Identified Cost, $52,174)                            $     55,750
- -----------------------------------------------------------------------------------------------------

<CAPTION>
Short-Term Obligation - 10.7%
- -----------------------------------------------------------------------------------------------------
                                                                      Principal Amount
                                                                         (000 Omitted)
- -----------------------------------------------------------------------------------------------------
<S>                                                                          <C>         <C>         
   Federal Home Loan Mortgage Corp., due 1/02/96,
      at Amortized Cost                                                      $     300   $    299,817
- -----------------------------------------------------------------------------------------------------
Total Investments (Identified Cost, $2,481,162)                                          $  2,731,906
Other Assets, Less Liabilities - 2.3%                                                          65,164
=====================================================================================================
Net Assets - 100.0%                                                                      $  2,797,070
- -----------------------------------------------------------------------------------------------------

*Non-income producing security.
</TABLE>

See notes to financial statements
<PAGE>
FINANCIAL STATEMENTS

<TABLE>
<CAPTION>
Statement of Assets and Liabilities
======================================================================================================
December 31, 1995
- ------------------------------------------------------------------------------------------------------
<S>                                                                                     <C>           
Assets:
   Investments, at value (identified cost, $2,481,162)                                  $    2,731,906
   Cash                                                                                         66,044
   Interest and dividends receivable                                                            19,892
   Receivable from investment adviser                                                            7,620
   Deferred organization expenses                                                                7,377
                                                                                        --------------
         Total assets                                                                   $    2,832,839
                                                                                        --------------
Liabilities:
   Payable for investments purchased                                                    $       21,446
   Payable to affiliates for management fee                                                        171
   Accrued expenses and other liabilities                                                       14,152
                                                                                        --------------
         Total liabilities                                                              $       35,769
                                                                                        --------------
Net assets                                                                              $    2,797,070
                                                                                        --------------
Net assets consist of:
   Paid-in capital                                                                      $    2,545,202
   Unrealized appreciation on investments                                                      250,744
   Accumulated undistributed net realized loss on investments and foreign
     currency transactions                                                                         (14)
   Accumulated undistributed net investment income                                               1,138
                                                                                        --------------
         Total                                                                          $    2,797,070
                                                                                        ==============
Shares of beneficial interest outstanding                                                      228,254
                                                                                        ==============
Net asset value, offering price and redemption price per share
   (net assets of $2,797,070 / 228,254 shares of beneficial interest outstanding)           $12.25
                                                                                        ==============
</TABLE>

See notes to financial statements
<PAGE>
FINANCIAL STATEMENTS - continued

<TABLE>
<CAPTION>
Statement of Operations
=====================================================================================================
Period Ended December 31, 1995*
- -----------------------------------------------------------------------------------------------------
<S>                                                                                     <C>           
Net investment income:
   Income -
      Interest                                                                          $      42,436
      Dividends                                                                                27,350
      Foreign taxes withheld                                                                      (62)
                                                                                        -------------
            Total investment income                                                     $      69,724
                                                                                        -------------
   Expenses -
      Management fee                                                                    $      10,826
      Trustees' compensation                                                                    1,725
      Shareholder servicing agent fee                                                             497
      Auditing fees                                                                            14,843
      Printing                                                                                  7,038
      Amortization of organization expenses                                                     1,811
      Custodian fee                                                                             1,154
      Legal fees                                                                                  682
      Miscellaneous                                                                             1,364
                                                                                        -------------
            Total expenses                                                              $      39,940
      Reduction of expenses by investment adviser                                             (25,092)
      Fees paid indirectly                                                                       (414)
                                                                                        -------------
            Net expenses                                                                $      14,434
                                                                                        -------------
               Net investment income                                                    $      55,290
                                                                                        -------------
Realized and unrealized gain (loss) on investments:
      Realized gain (loss) (identified cost basis) -
         Investment transactions                                                        $      50,820
         Foreign currency transactions                                                            (14)
                                                                                        -------------
               Net realized gain on investments and foreign currency transactions       $      50,806
                                                                                        -------------
      Change in unrealized appreciation -
         Investments                                                                    $     250,744
                                                                                        -------------
               Net realized and unrealized gain on investments and foreign currency     $     301,550
                                                                                        -------------
                     Increase in net assets from operations                             $     356,840
                                                                                        =============


*For the period from the commencement of investment operations, January 3, 1995 to December 31, 1995.
</TABLE>

See notes to financial statements
<PAGE>
FINANCIAL STATEMENTS - continued

<TABLE>
<CAPTION>
Statement of Changes in Net Assets
======================================================================================================
Period Ended December 31, 1995*
- ------------------------------------------------------------------------------------------------------
<S>                                                                                     <C>           
Increase (decrease) in net assets:
From operations -
   Net investment income                                                                $       55,290
   Net realized gain on investments and foreign currency transactions                           50,806
   Net unrealized gain on investments and foreign currency translation                         250,744
                                                                                        --------------
      Increase in net assets from operations                                            $      356,840
                                                                                        --------------
   Distributions declared to shareholders -
      From net investment income                                                        $      (54,152)
      From net realized gain on investments and foreign currency transactions                  (50,806)
      In excess of net realized gain on investments and foreign currency transactions              (14)
                                                                                        --------------
         Total distributions declared to shareholders                                   $     (104,972)
                                                                                        --------------
   Series share (principal) transactions -
      Net proceeds from sale of shares                                                  $    3,794,238
      Net asset value of shares issued to shareholders
         in reinvestment of distributions                                                      104,970
      Cost of shares reacquired                                                             (1,362,606)
                                                                                        --------------
         Increase in net assets from Series share transactions                          $    2,536,602
                                                                                        --------------
            Total increase in net assets                                                $    2,788,470
Net assets:
      At beginning of period                                                                     8,600
                                                                                        --------------
      At end of period (including accumulated undistributed net
         investment income of $1,138)                                                   $    2,797,070
                                                                                        ==============

*For the period from the commencement of investment operations, January 3, 1995 to December 31, 1995.
</TABLE>

See notes to financial statements
<PAGE>
FINANCIAL STATEMENTS - continued

<TABLE>
<CAPTION>
Financial Highlights
=================================================================================================
Period Ended December 31, 1995*
- -------------------------------------------------------------------------------------------------
<S>                                                                                  <C>         
Per share data (for a share outstanding throughout each period):
Net asset value - beginning of period                                                $      10.00
                                                                                     ------------
Income from investment operations# -
   Net investment income{S}                                                          $       0.41
   Net realized and unrealized gain on investments and foreign
      currency transactions                                                                  2.32
                                                                                     ------------
      Total from investment operations                                               $       2.73
                                                                                     ------------
Less distributions declared to shareholders -
   From net investment income                                                        $      (0.25)
   From net realized gain on investments and foreign currency transactions                  (0.23)
                                                                                     ------------
      Total distributions declared to shareholders                                   $      (0.48)
                                                                                     ------------
Net asset value - end of period                                                      $      12.25
                                                                                     ============
Total return 27.34%++
Ratios (to average net assets)/Supplemental data{S}:
   Expenses                                                                                 1.00%+
   Net investment income                                                                    3.83%+
Portfolio turnover                                                                            16%
Net assets at end of period (000 omitted)                                            $      2,797

<FN>
  *For the period from the commencement of investment operations, January 3,
   1995 to December 31, 1995.
  +Annualized.
 ++Not annualized.
  #Per share data is based on average shares outstanding.
{S}The adviser voluntarily agreed to maintain the expenses of the Series at
   not more than 1.00% of average daily net assets. To the extent actual
   expenses were over these limitations, the net investment income per share and
   the ratios would have been:
</FN>

<S>                                                                                  <C>         
      Net investment income                                                          $       0.22
      Ratios (to average net assets):
         Expenses                                                                           2.77%+
         Net investment income                                                              2.09%+
</TABLE>

See notes to financial statements
<PAGE>
NOTES TO FINANCIAL STATEMENTS

(1) Business and Organization
MFS Total Return Series (the Series) is a diversified series of MFS Variable
Insurance Trust (the Trust) which is comprised of the following twelve series:
MFS Bond Series, MFS Emerging Growth Series, MFS Growth Series, MFS Growth with
Income Series, MFS High Income Series, MFS Limited Maturity Series, MFS Money
Market Series, MFS Research Series, MFS Strategic Fixed Income Series, MFS Total
Return Series, MFS Utilities Series and MFS World Governments Series. The Trust
is organized as a Massachusetts business trust and is registered under the
Investment Company Act of 1940, as amended, as an open-end management investment
company.

The shareholders of each Series of the Trust are separate accounts of insurance
companies which offer variable annuity and/or life insurance products. The
Series was seeded on or about February 1, 1994, but remained inactive until the
current period. The commencement of investment operations took place on January
3, 1995. As of December 31, 1995 there were nine shareholders in the Series.

(2) Significant Accounting Policies
Investment Valuations - Equity securities listed on securities exchanges or
reported through the NASDAQ system are valued at last sale prices. Unlisted
equity securities or listed equity securities for which last sale prices are not
available are valued at last quoted bid prices. Debt securities (other than
short-term obligations which mature in 60 days or less), including listed issues
and forward contracts, are valued on the basis of valuations furnished by
dealers or by a pricing service with consideration to factors such as
institutional-size trading in similar groups of securities, yield, quality,
coupon rate, maturity, type of issue, trading characteristics and other market
data, without exclusive reliance upon exchange or over-the-counter prices.
Short-term obligations, which mature in 60 days or less, are valued at amortized
cost, which approximates market value. Securities for which there are no such
quotations or valuations are valued at fair value as determined in good faith by
or at the direction of the Trustees.

Repurchase Agreements - The Series may enter into repurchase agreements with
institutions that the Series' investment adviser has determined are
creditworthy. Each repurchase agreement is recorded at cost. The Series requires
that the securities purchased in a repurchase transaction be transferred to the
custodian in a manner sufficient to enable the Series to obtain those securities
in the event of a default under the repurchase agreement. The Series monitors,
on a daily basis, the value of the securities transferred to ensure that the
value, including accrued interest, of the securities under each repurchase
agreement is greater than amounts owed to the Series under each such repurchase
agreement.

Foreign Currency Translation - Investment valuations, other assets, and
liabilities initially expressed in foreign currencies are converted each
business day into U.S. dollars based upon current exchange rates. Purchases and
sales of foreign investments, income and expenses are converted into U.S.
dollars based upon currency exchange rates prevailing on the respective dates of
such transactions. Gains and losses attributable to foreign currency exchange
rates on sales of securities are recorded for financial statement purposes as
net realized gains and losses on investments. Gains and losses attributable to
foreign exchange rate movements on income and expenses are recorded for
financial statement purposes as foreign currency transaction gains and losses.
That portion of both realized and unrealized gains and losses on investments
that results from fluctuations in foreign currency exchange rates is not
separately disclosed.

Deferred Organization Expenses - Costs incurred by the Series in connection with
its organization have been deferred and are being amortized on a straight-line
basis over a five-year period beginning on the date of commencement of
investment operations of the Series.

Investment Transactions and Income - Investment transactions are recorded on the
trade date. Interest income is recorded on the accrual basis. All premium and
original issue discount are amortized or accreted for financial statement and
tax reporting purposes as required by federal income tax regulations. Dividend
income is recorded on the ex-dividend date for dividends received in cash.

Dividend and interest payments received in additional securities are recorded on
the ex-dividend or ex-interest date in an amount equal to the value of the
security on such date.

Fees Paid Indirectly - The Series' custodian bank calculates its fee based on
the Series' average daily net assets. This fee is reduced according to an
expense offset arrangement with State Street Bank and Trust Company, the Trust's
dividend disbursing agent, which provides for partial reimbursement of custody
fees based on a formula developed to measure the value of cash deposited by the
Series with the custodian and with the dividend disbursing agent. This amount is
shown as a reduction of expenses on the Statement of Operations.

Tax Matters and Distributions - The Series' policy is to comply with the
provisions of the Internal Revenue Code (the Code) applicable to regulated
investment companies and to distribute to shareholders all of its taxable
income, including any net realized gain on investments. Accordingly, no
provision for federal income or excise tax is provided. The Series files a tax
return annually using tax accounting methods required under provisions of the
Code which may differ from generally accepted accounting principles, the basis
on which these financial statements are prepared. Accordingly, the amount of net
investment income and net realized gain reported on these financial statements
may differ from that reported on the Series' tax return. Distributions to
shareholders are recorded on the ex-dividend date.

The Series distinguishes between distributions on a tax basis and a financial
reporting basis and requires that only distributions in excess of tax basis
earnings and profits are reported in the financial statements as a return of
capital. Differences in the recognition or classification of income between the
financial statements and tax earnings and profits which result in temporary
over-distributions for financial statement purposes, are classified as
distributions in excess of net investment income or accumulated net realized
gains.

(3) Transactions with Affiliates
Investment Adviser - The Series has an investment advisory agreement with
Massachusetts Financial Services Company (MFS) to provide overall investment
advisory and administrative services, and general office facilities. The
management fee is computed daily and paid monthly at an effective annual rate of
0.75% of its average daily net assets. Under a temporary expense reimbursement
agreement with MFS, MFS has voluntarily agreed to limit the operating expenses
of the Series at levels which increase over time. Currently MFS has agreed to
limit the Series' expenses at an effective annual rate of 1.00% of its average
daily net assets. MFS will pay all Series' expenses in excess of the current
limit subject to reimbursement by the Series at a later date. To the extent that
actual Series' expenses do not reach the limit, the Series will reimburse MFS
for prior expenses paid by MFS on behalf of the Series such that the Series'
expense ratio does not exceed 1.00% of its average daily net assets. At December
31, 1995, the aggregate unreimbursed expenses owed to MFS by the Series amounted
to $25,092.

The Series pays no compensation directly to its Trustees who are officers of the
investment adviser, or to officers of the Series, all of whom receive
remuneration for their services to the Series from MFS. Certain of the officers
and Trustees of the Series are officers or directors of MFS and MFS Service
Center, Inc. (MFSC).

Shareholder Servicing Agent - MFSC, a wholly owned subsidiary of MFS, earns a
fee for its services as shareholder servicing agent. The fee is calculated as a
percentage of the average daily net assets at an effective annual rate of up to
0.035%.

(4) Portfolio Securities
Purchases and sales of investments, other than purchased option transactions and
short-term obligations, were as follows:

<TABLE>
<CAPTION>
                                                                              Purchases            Sales
========================================================================================================
<S>                                                                       <C>             <C>           
      U.S. government securities                                          $     805,805   $       51,141
                                                                          =============   ==============
      Investments (non-U.S. government securities)                        $   1,575,182   $      190,428
                                                                          =============   ==============
</TABLE>

The cost and unrealized appreciation or depreciation in value of the investments
owned by the Series, as computed on a federal income tax basis, are as follows:

<TABLE>
<CAPTION>
<S>                                                                                       <C>          
      Aggregate cost                                                                      $   2,481,162
                                                                                          =============
      Gross unrealized appreciation                                                       $     256,095
      Gross unrealized depreciation                                                              (5,351)
                                                                                          -------------
            Net unrealized appreciation                                                   $     250,744
                                                                                          =============
</TABLE>

(5) Shares of Beneficial Interest
The Declaration of Trust permits the Trustees to issue an unlimited number of
full and fractional shares of beneficial interest (without par value).
Transactions in Series shares were as follows:


<TABLE>
<CAPTION>
Period Ended December 31, 1995*                                                 Shares              Amount
==========================================================================================================
<S>                                                                           <C>               <C>       
Shares sold                                                                    333,436      $    3,794,238
Shares issued to shareholders in reinvestment of distributions                   8,611             104,970
Shares reacquired                                                             (114,653)         (1,362,606)
                                                                              --------      --------------
    Net increase                                                               227,394      $    2,536,602
                                                                              ========      ==============

*For the period from commencement of investment operations, January 3, 1995 to December 31, 1995.
</TABLE>

(6) Line of Credit
The Series entered into an agreement which enables it to participate with other
funds managed by MFS in an unsecured line of credit with a bank which permits
borrowings up to $350 million, collectively. Borrowings may be made to
temporarily finance the repurchase of Series shares. Interest is charged to each
fund, based on its borrowings, at a rate equal to the bank's base rate. In
addition, a commitment fee, based on the average daily unused portion of the
line of credit, is allocated among the participating funds at the end of each
quarter.
<PAGE>
INDEPENDENT AUDITORS' REPORT

To the Trustees of MFS Variable Insurance Trust and Shareholders of MFS Total
Return Series:

We have audited the accompanying statement of assets and liabilities, including
the portfolio of investments, of MFS Total Return Series (the Series) (one of
the series constituting MFS Variable Insurance Trust) as of December 31, 1995,
the related statements of operations and changes in net assets and financial
highlights for the period from January 3, 1995 (the commencement of investment
operations) to December 31, 1995. These financial statements and financial
highlights are the responsibility of the Series' management. Our responsibility
is to express an opinion on these financial statements and financial highlights
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 and financial highlights are
free of material misstatement. An audit includes examining, on a test basis,
evidence supporting the amounts and disclosures in the financial statements. Our
procedures included confirmation of the securities owned at December 31, 1995 by
correspondence with the custodian; where replies were not received from brokers,
we performed other auditing procedures. 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, such financial statements and financial highlights present
fairly, in all material respects, the financial position of MFS Total Return
Series at December 31, 1995, the results of its operations, the changes in its
net assets and its financial highlights for the stated period in conformity with
generally accepted accounting principles.



DELOITTE & TOUCHE LLP


Boston, Massachusetts
February 2, 1996



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

This report is prepared for the general information of shareholders. It is
authorized for distribution to prospective investors only when preceded or
accompanied by a current prospectus.
<PAGE>



                                                                   VTR-2-2/96/2M




<PAGE>
[LOGO]                                                       Annual Report for
THE FIRST NAME IN MUTUAL FUNDS                                      Year Ended
                                                             December 31, 1995


MFS(R) UTILITIES SERIES
A Series of MFS(R) Variable Insurance Trust

<PAGE>
MFS(R) UTILITIES SERIES
A SERIES OF MFS(R)  VARIABLE INSURANCE TRUST

TRUSTEES
A. Keith Brodkin*
Chairman and President

Nelson J. Darling, Jr.
Trustee, Eastern Enterprises
(diversified holding company)

William R. Gutow
Vice Chairman,
Capitol Entertainment
(Blockbuster Video Franchise)

PORTFOLIO MANAGER
Maura Shaughnessy*

TREASURER
W. Thomas London*

ASSISTANT TREASURER
James O. Yost*

SECRETARY
Stephen E. Cavan*

ASSISTANT SECRETARY
James R. Bordewick, Jr.*

INVESTMENT ADVISER
Massachusetts Financial Services Company
500 Boylston Street
Boston, MA 02116-3741

DISTRIBUTOR
MFS Fund Distributors, Inc.
500 Boylston Street
Boston, MA 02116-3741

SHAREHOLDER SERVICE CENTER
MFS Service Center, Inc.
P.O. Box 1400
Boston, MA 02107-9906

For additional information, contact your financial adviser.

CUSTODIAN
Investors Bank & Trust Company

AUDITORS
Deloitte & Touche LLP




*Affiliated with the Investment Adviser
<PAGE>
Dear Contract Owner:
An environment of declining interest rates and a favorable outlook for inflation
helped establish a pattern of positive performance in both fixed-income and
equity markets around the world during the past 12 months. Yields on many
fixed-income securities continued to decline throughout the year, and bond
prices rose in response to these declines. At the same time, lower interest
rates and strong corporate earnings reports through most of the year helped the
prices of many stocks to rise over the period, producing strong returns. For the
12 months ended December 31, 1995, the U.S. stock market, as measured by the
Standard & Poor's 500 Composite Index (the S&P 500), a popular, unmanaged index
of common stock performance, returned +37.53%. All of the series in the Trust
which invest in equity securities participated in this favorable performance and
achieved positive total returns.

U.S. Outlook
Moderate but sustainable growth was the hallmark of the economic expansion's
fifth year, although some signs of sluggishness were evident late in the year.
Recent retail sales, for example, have been disappointing, in part because of
rising levels of consumer debt. In addition, growth is not expected to get much
help from the manufacturing sector as order flows from manufacturers have
moderated. Export activity, meanwhile, is also expected to remain modest as
continued weakness abroad limits demand for many U.S. goods. However, the
Federal Reserve Board's consistent and, so far, successful efforts to fight
inflation seem to be giving consumers and businesses enough longer-term
confidence to help maintain modest growth in real (adjusted for inflation) gross
domestic product into 1996.

Global Outlook
A pattern of slow to moderate growth and low and controlled inflation remains a
dominant theme in major industrialized countries, including the United States.
While the recent recovery of the dollar against the German mark and the Japanese
yen has added some strength to the economies of Europe and Japan, the outlook is
for sluggish economic growth, in the near term at least. And although moves by
central banks in Germany and Japan to lower interest rates have helped stimulate
domestic demand, many industrial companies in these countries are still
struggling to compete in a global marketplace in which the prices of their
products are less competitively priced. On the positive side, this does mean
little to no inflationary pressure in these countries, and we believe that this,
combined with further reductions in interest rates, could help provide a
foundation for stronger economic growth in the long run. Also, we believe that
many of the cost-cutting measures taken by companies in these countries over the
past few years will ultimately provide earnings leverage when economic growth
improves. Inflation in most overseas economies remains in a downward trend,
providing fixed-income investors with opportunities for relatively attractive
real rates of interest, possibly accompanied by moderate price appreciation.
While the dollar continues to represent a sound store of long-term value, its
relative strength in the near term is being restrained by the persistent U.S.
current-account deficit.

Bond Markets
Given the recent signs of economic weakness, prospects for the Federal Reserve
Board's further decreasing short-term interest rates are good. Long-term rates,
meanwhile, moved noticeably downward in the latter months of 1995 in
anticipation of more modest fourth-quarter growth with continued low inflation.
While there were some increases in commodity prices early in the year, companies
found it difficult to pass these on at the consumer level as they continue to
fight for market share. Additionally, unit labor costs remain under control and
seem to be growing at a pace that is near or below the ongoing inflation rate.
Thus, with long-term U.S. government bonds yielding approximately 6% in an
environment of 2% to 3% inflation, real rates of return in the fixed-income
markets remain relatively attractive.

In world bond markets, slowing economic growth, low inflation, and declining
official interest rates helped result in solid performance during the past 12
months. European governments are engaged in multi-year programs to reduce their
budget deficits and debt levels. These programs are positive for bonds in that
lower government spending tends to reduce inflationary pressures and lower
issuance of government debt reduces supply pressures on the bond market. In the
Japanese market, powerful deflationary forces have supported a drop in yields to
historically low levels. We now feel this process may be drawing to an end,
given a reversal of priorities at the central bank from fighting inflation,
which is now non-existent, to offsetting the downward spiral of deflation. The
high returns of the U.S. bond market, as measured by the Lehman Brothers
Government Bond Index, have been echoed in other U.S. dollar-bloc markets,
including Australia, New Zealand, and Canada, all of which saw positive
performance over the past year according to Salomon Brothers. Currently, the
Australian market offers significantly higher yields than the U.S. market, and,
we believe, represents good value. As long as the outlook for U.S. bonds remains
positive, these related markets could outperform the U.S. market.

Stock Markets
After some volatility late in the third quarter, the stock market continued to
strengthen. Although many companies reported solid third-quarter results, there
was some weakness in the earnings of retail, financial services and even some
technology companies. However, a slowdown in earnings may be a positive
development if it is an indication that the economy is not overheating and
inflation is under control. While we see a deceleration of corporate earnings as
the inevitable consequence of traditional business cycles, we remain encouraged
by the high absolute level of profitability among U.S. companies. Also, many
companies' increasing emphasis on cost containment and growing use of technology
have helped keep them highly competitive and reasonably profitable. Looking
ahead, we believe that a stabilizing interest rate environment, coupled with
reasonable earnings reports, could justify current market valuations.

Comments from the portfolio manager of this Series are presented on the
following page. We appreciate your support and welcome any questions or comments
you may have.

Respectfully,



/s/ A. Keith Brodkin                              /s/ Maura Shaughnessy
- --------------------------                        ---------------------
A. Keith Brodkin                                  Maura Shaughnessy
Chairman and President                            Portfolio Manager

January 12, 1996
<PAGE>
MFS(R) UTILITIES SERIES

Declining interest rates provided a positive environment for utility stocks over
the past 12 months and helped bring their performance in line with broad market
averages. For the year ended December 31, 1995, the Utilities Series provided a
total return of +33.94%, compared to a +41.13% return for the Standard & Poor's
Utility Index. Currently, the Series remains overweighted in domestic utility
stocks relative to the S&P Utility Index. Although competition is emerging in
this industry, the pace of change is slower than had been anticipated. The
Series is currently emphasizing electric utilities which are taking the
necessary steps to improve their competitive position. At this juncture, we
believe the mid-tier-quality group offers much higher risk-adjusted returns than
the high-quality segment. Portland General and PECO Energy, two of the Series'
largest holdings, fit these criteria. The Series is underweighted in the
regional Bell operating companies because we believe most of the good news in
terms of legislation and growth prospects is reflected in the prices of these
stocks, which have been strong performers so far this year. Although stocks of
the long-distance companies have been solid performers, the Series remains
overweighted in these stocks because we are seeing accelerating growth in
long-distance volumes and more reasonable valuations. Two of the Series' largest
holdings, Frontier Corp. and MCI Communications, are in the long-distance
telephone sector. The Series is also overweighted in gas utility stocks,
focusing on pipeline companies with expansion opportunities and/or those which
are improving the performance of their non-regulated subsidiaries.
William Cos. and Westcoast Energy are two such companies.

Currently, 15.6% of the Series' total net assets are invested in international
utilities. We believe these investments typically offer superior growth
opportunities and more favorable regulatory treatment than domestic utilities.
For example, Tele Danmark, the Series' largest international holding, offers
solid earnings and dividend growth.

Finally, real estate investment trusts (REITs) currently comprise about 10% of
the Series' total net assets. We believe these investments offer above-average
dividend growth with superior yield potential. In keeping with our strategy of
remaining well-diversified, we have invested in storage, health care,
industrial-office and manufactured-housing REITs.

PORTFOLIO MANAGER PROFILE

Maura Shaughnessy joined MFS in 1991 as an equity analyst. A graduate of Colby
College and the Amos Tuck School of Business at Dartmouth College, she was
promoted to Assistant Vice President in 1992 and Vice President in 1993. She has
managed the MFS Utilities Series since January 1995. Ms. Shaughnessy is a
Chartered Financial Analyst.
<PAGE>
PERFORMANCE SUMMARY

The information below illustrates the historical performance of MFS Utilities
Series shares in comparison to various market indicators. Series results do not
reflect the deduction of any applicable surrender charge. Benchmark comparisons
are unmanaged and do not reflect any fees or expenses. You cannot invest in an
index. All results reflect the reinvestment of all dividends and capital gains.

GROWTH OF A HYPOTHETICAL $10,000 INVESTMENT
(For the Period from January 3, 1995* to December 31, 1995)

  Date     Days  MFS Utilities Series  S&P Utility Index Consumer Price Index
- --------   ----  --------------------  ----------------- --------------------
 1/ 3/95     0        10,000                 10,000           10,000
 1/31/95    28        10,240                 10,779           10,040
 2/28/95    56        10,340                 10,758           10,080
 3/31/95    87        10,280                 10,690           10,114
 4/30/95   117        10,670                 11,089           10,147
 5/31/95   148        11,030                 11,435           10,167
 6/30/95   178        11,260                 11,484           10,187
 7/31/95   209        11,750                 11,779           10,187
 8/31/95   240        11,920                 12,019           10,214
 9/30/95   270        12,470                 12,772           10,234
10/31/95   301        12,620                 13,043           10,267
11/30/95   331        12,830                 13,186           10,261
12/31/95   362        13,394                 14,113           10,254

AGGREGATE TOTAL RETURNS
                                                                     1/03/95* -
                                                                    12/31/95
===============================================================================
MFS Utilities Series                                                +33.94%
- -------------------------------------------------------------------------------
Standard & Poor's Utility Index#\1/                                 +41.13%
- -------------------------------------------------------------------------------
Consumer Price Index{S}\1/                                          +  2.54%
- -------------------------------------------------------------------------------

All results are historical and, therefore, are not an indication of future
results. The investment return and principal value of an investment in the
product will vary with changes in market conditions, and shares, when redeemed,
may be worth more or less than their original cost. All Series results reflect
the applicable expense subsidy which is explained in the Notes to Financial
Statements. Had the subsidy not been in effect, the results would have been less
favorable. All Series results do not reflect expenses that would be imposed by
insurance company separate accounts.

  *Commencement of investment operations.
  #The Standard & Poor's Utility Index is an unmanaged, market-value-weighted
    index of all utility stocks in the S&P 500.
{S}The Consumer Price Index is a popular measure of change in prices.
\1/Source: Lipper Analytical Services, Inc.
<PAGE>
PORTFOLIO OF INVESTMENTS - December 31, 1995

<TABLE>
<CAPTION>
Common Stocks - 74.1%
===================================================================================================
Issuer                                                                      Shares            Value
- ---------------------------------------------------------------------------------------------------
<S>                                                                          <C>     <C>           
U.S. Stocks - 58.5%
   Consumer Goods and Services - 1.9%
      Philip Morris Cos., Inc.                                                 500   $       45,250
- ---------------------------------------------------------------------------------------------------
   Real Estate Investment Trusts - 9.9%
      Beacon Properties Corp.                                                1,000   $       23,000
      FelCor Suite Hotels, Inc.                                                800           22,200
      Hospitality Properties Trust                                           1,000           26,750
      LTC Properties, Inc.                                                     200            3,000
      National Health Investors, Inc.                                        1,050           34,781
      Public Storage, Inc.                                                   2,600           49,400
      Reckson Associates Realty Corp.                                          600           17,625
      Sovran Self Storage, Inc.                                                500           13,250
      TriNet Corporate Realty Trust, Inc.                                    1,600           43,600
                                                                                     --------------
                                                                                     $      233,606
- ---------------------------------------------------------------------------------------------------
   Utilities - Electric - 17.1%
      CMS Energy Corp.                                                       1,750   $       52,281
      Cinergy Corp.                                                          1,000           30,625
      FPL Group, Inc.                                                          200            9,275
      Illinova Corp.                                                         1,800           54,000
      PECO Energy Co.                                                        1,000           30,125
      Pinnacle West Capital Corp.                                            1,600           46,000
      Portland Gen Corp.                                                     2,900           84,463
      Public Service Company of New Mexico*                                  1,000           17,625
      SCEcorp                                                                1,000           17,750
      Texas Utilities Co.                                                    1,000           41,125
      Unicom Corp.                                                             700           22,925
                                                                                     --------------
                                                                                     $      406,194
- ---------------------------------------------------------------------------------------------------
   Utilities - Gas - 16.0%
      Coastal Corp.                                                          1,400   $       52,150
      El Paso Natural Gas Co.                                                  300            8,512
      Enron Corp.                                                            1,000           38,125
      Equitable Resources, Inc.                                              1,000           31,250
      Noble Affiliates, Inc.                                                 1,400           41,825
      Pacific Enterprises                                                    1,200           33,900
      Panhandle Eastern Corp.                                                1,800           50,175
      Questar Corp.                                                            100            3,350
      Sonat, Inc.                                                              500           17,813
      Westcoast Energy, Inc.                                                 2,520           36,855
      Williams Cos., Inc.                                                    1,500           65,812
                                                                                     --------------
                                                                                     $      379,767
- ---------------------------------------------------------------------------------------------------
   Utilities - Telephone - 13.6%
      AT&T Corp.                                                             1,000   $       64,750
      Ameritech Corp.                                                          800           47,200
      Frontier Corp.                                                         2,200           66,000
      GTE Corp.                                                              1,100           48,400
      MCI Communications Corp.                                               1,500           39,188
      SBC Communications, Inc.                                               1,000           57,500
                                                                                     --------------
                                                                                     $      323,038
- ---------------------------------------------------------------------------------------------------
Total U.S. Stocks                                                                    $    1,387,855
- ---------------------------------------------------------------------------------------------------
<PAGE>
<CAPTION>
PORTFOLIO OF INVESTMENTS - continued

Common Stocks - continued
===================================================================================================
Issuer                                                                      Shares            Value
- ---------------------------------------------------------------------------------------------------
<S>                                                                          <C>     <C>           
Foreign Stocks - 15.6%
   Argentina - 1.3%
      Central Costenera, ADR (Utilities - Electric)##                        1,000   $       31,125
- ---------------------------------------------------------------------------------------------------
   Brazil - 0.2%
      Telecomunicacoes Brasileiras SA (Utilities - Telephone)                  100   $        4,737
- ---------------------------------------------------------------------------------------------------
   Canada - 1.2%
      TransCanada Pipelines Ltd. (Utilities - Gas)                           2,000   $       27,500
- ---------------------------------------------------------------------------------------------------
   Chile - 3.8%
      Chilectra SA, ADR (Utilities - Electric)*                              1,000   $       48,326
      Chilgener SA, ADR (Utilities - Electric)                               1,700           42,500
                                                                                     --------------
                                                                                     $       90,826
- ---------------------------------------------------------------------------------------------------
   Denmark - 2.4%
      Tele Danmark, ADR (Utilities - Telephone)                              2,100   $       58,012
- ---------------------------------------------------------------------------------------------------
   Italy - 1.7%
      Telecom Italia S.p.A. (Utilities - Telephone)                         37,400   $       39,367
- ---------------------------------------------------------------------------------------------------
   Mexico - 0.1%
      Telefonos de Mexico, ADR (Utilities - Telephone)                         100   $        3,188
- ---------------------------------------------------------------------------------------------------
   Spain - 1.3%
      Empresa Nacional de Electricidad, ADR (Utilities - Electric)             200   $       11,450
      Iberdrola (Utilities - Electric)                                       2,000           18,299
                                                                                     --------------
                                                                                     $       29,749
- ---------------------------------------------------------------------------------------------------
   United Kingdom - 3.6%
      London Electricity (Utilities - Electric)                                700   $        6,239
      National Grid Group plc (Utilities - Electric)*                          596            1,849
      National Power (Utilities - Electric)*                                 5,000           11,993
      PowerGen PLC (Utilities - Electric)                                    5,000           41,338
      PowerGen PLC, ADR (Utilities - Electric)                               7,000           24,073
                                                                                     --------------
                                                                                     $       85,492
- ---------------------------------------------------------------------------------------------------
Total Foreign Stocks                                                                 $      369,996
- ---------------------------------------------------------------------------------------------------
Total Common Stocks (Identified Cost, $1,525,644)                                    $    1,757,851
- ---------------------------------------------------------------------------------------------------
Convertible Preferred Stocks - 0.8%
===================================================================================================
U.S. Convertible Preferred Stock - 0.3%
      Enron Corp., 6.25% (Utilities - Gas)                                     300   $        7,200
- ---------------------------------------------------------------------------------------------------
Foreign Convertible Preferred Stock - 0.5%
   Argentina
      Compania Inversiones Telephone, 7% (Utilities - Telephone)##             200   $       11,200
- ---------------------------------------------------------------------------------------------------
Total Convertible Preferred Stocks (Identified Cost, $18,074)                        $       18,400
- ---------------------------------------------------------------------------------------------------
<CAPTION>
Non-Convertible Bonds - 11.4%
===================================================================================================
                                                                  Principal Amount
                                                                     (000) Omitted
- ---------------------------------------------------------------------------------------------------
<S>                                                                           <C>    <C>           
   U.S. Treasury Notes, 6.125s, 2000                                          $100   $      103,000
   U.S. Treasury Notes, 7.25s, 2004                                            150          166,804
- ---------------------------------------------------------------------------------------------------
Total Non-Convertible Bonds (Identified Cost, $266,430)                              $      269,804
- ---------------------------------------------------------------------------------------------------
<PAGE>
<CAPTION>
PORTFOLIO OF INVESTMENTS- continued

Convertible Bonds - 0.6%
===================================================================================================
                                                                  Principal Amount
Issuer                                                               (000) Omitted            Value
- ---------------------------------------------------------------------------------------------------
<S>                                                                            <C>   <C>           
   Assisted Living Concepts, 7s, 2005 (Real Estate
      Investment Trusts)                                                       $10   $       10,275
   System Energy Resources, 7.38s, 2000 (Utilities - Electric)                   5            4,888
- ---------------------------------------------------------------------------------------------------
Total Convertible Bonds (Identified Cost, $15,000)                                   $       15,163
- ---------------------------------------------------------------------------------------------------

Short-Term Obligation - 18.9%
===================================================================================================
   Federal Home Loan Mortgage Corp., due 1/02/96 - 1/22/96,
      at Amortized Cost                                                       $450   $      449,079
- ---------------------------------------------------------------------------------------------------
Total Investments (Identified Cost, $2,274,227)                                      $    2,510,297
Other Assets, Less Liabilities - (5.8)%                                                    (137,128)
===================================================================================================
Net Assets - 100.0%                                                                  $    2,373,169
- ---------------------------------------------------------------------------------------------------
  *Non-income producing security.
 ##SEC Rule 144A restriction.
</TABLE>

See notes to financial statements
<PAGE>
FINANCIAL STATEMENTS

<TABLE>
<CAPTION>
Statement of Assets and Liabilities
===============================================================================================
December 31, 1995
- -----------------------------------------------------------------------------------------------
<S>                                                                               <C>          
Assets:
   Investments, at value (identified cost, $2,274,227)                            $   2,510,297
   Cash                                                                                  38,731
   Receivable for investments sold                                                       20,445
   Interest and dividends receivable                                                     16,329
   Receivable from investment adviser                                                     7,951
   Deferred organization expenses                                                         7,377
                                                                                  -------------
         Total assets                                                             $   2,601,130
                                                                                  -------------
Liabilities:
   Payable for investments purchased                                              $     213,727
   Payable to affiliates for management fee                                                 146
   Accrued expenses and other liabilities                                                14,088
                                                                                  -------------
         Total liabilities                                                        $     227,961
                                                                                  -------------
Net assets                                                                        $   2,373,169
                                                                                  =============
Net assets consist of:
   Paid-in capital                                                                $   2,131,211
   Unrealized appreciation on investments and translation
      of assets and liabilities in foreign currencies                                   235,992
   Accumulated undistributed net realized gain on investments
      and foreign currency transactions                                                   2,871
   Accumulated undistributed net investment income                                        3,095
                                                                                  -------------
         Total                                                                    $   2,373,169
                                                                                  =============
Shares of beneficial interest outstanding                                               188,778
                                                                                  =============
Net asset value, offering price and redemption price
   per share (net assets of $2,373,169 / 188,778 shares
   of beneficial interest outstanding)                                                $12.57
                                                                                  =============

See notes to financial statements
</TABLE>
<PAGE>
FINANCIAL STATEMENTS - continued

<TABLE>
<CAPTION>
Statement of Operations
==================================================================================================
Period Ended December 31, 1995*
- --------------------------------------------------------------------------------------------------
<S>                                                                                  <C>          
Net investment income:
   Income -
      Dividends                                                                      $      53,080
      Interest                                                                               6,604
      Foreign taxes withheld                                                                (1,497)
                                                                                     -------------
         Total investment income                                                     $      58,187
                                                                                     -------------
   Expenses -
      Management fee                                                                 $       9,376
      Trustees' compensation                                                                 1,725
      Shareholder servicing agent fee                                                          430
      Auditing fees                                                                         14,843
      Printing                                                                               7,038
      Amortization of organization expenses                                                  1,811
      Custodian fee                                                                          1,215
      Legal fees                                                                               682
      Miscellaneous                                                                          1,244
                                                                                     -------------
         Total expenses                                                              $      38,364
      Reduction of expenses by investment adviser                                          (25,513)
      Fees paid indirectly                                                                    (349)
                                                                                     -------------
         Net expenses                                                                $      12,502
                                                                                     -------------
            Net investment income                                                    $      45,685
                                                                                     -------------
Realized and unrealized gain (loss) on investments:
   Realized gain (loss) (identified cost basis) -
      Investment transactions                                                        $     103,844
      Foreign currency transactions                                                            (24)
                                                                                     -------------
         Net realized gain on investments and foreign currency transactions          $     103,820
                                                                                     -------------
   Change in unrealized appreciation (depreciation) -
      Investments                                                                    $     236,070
      Translation of assets and liabilities in foreign currencies                              (78)
                                                                                     -------------
         Net unrealized gain on investments                                          $     235,992
                                                                                     -------------
            Net realized and unrealized gain on investments and foreign currency     $     339,812
                                                                                     -------------
               Increase in net assets from operations                                $     385,497
                                                                                     =============

*For the period from the commencement of investment operations, January 3, 1995 to December 31, 1995.
</TABLE>

See notes to financial statements
<PAGE>
FINANCIAL STATEMENTS - continued

<TABLE>
<CAPTION>
Statement of Changes in Net Assets
==================================================================================================
Period Ended December 31, 1995*
- --------------------------------------------------------------------------------------------------
<S>                                                                                  <C>          
Increase (decrease) in net assets:
From operations -
   Net investment income                                                             $      45,685
   Net realized gain on investments and foreign currency transactions                      103,820
   Net unrealized gain on investments and foreign currency translation                     235,992
                                                                                     -------------
      Increase in net assets from operations                                         $     385,497
                                                                                     -------------
Distributions declared to shareholders -
   From net investment income                                                        $     (42,590)
   From net realized gain on investments and foreign currency transactions                (100,949)
                                                                                     -------------
      Total distributions declared to shareholders                                   $    (143,539)
                                                                                     -------------
Series share (principal) transactions -
   Net proceeds from sale of shares                                                  $   3,789,585
    Net asset value of shares issued to shareholders in reinvestment of
      distributions                                                                        143,519
   Cost of shares reacquired                                                            (1,810,493)
                                                                                     -------------
      Increase in net assets from Series share transactions                          $   2,122,611
                                                                                     -------------
         Total increase in net assets                                                $   2,364,569
Net asssets:
      At beginning of period                                                                 8,600
                                                                                     -------------
      At end of period (including accumulated undistributed net investment
         income of $3,095)                                                           $   2,373,169
                                                                                     =============

*For the period from the commencement of investment operations, January 3, 1995 to December 31, 1995.
</TABLE>

See notes to financial statements
<PAGE>
FINANCIAL STATEMENTS - continued

<TABLE>
<CAPTION>
Financial Highlights
==================================================================================================
Period ended December 31, 1995*
- --------------------------------------------------------------------------------------------------
<S>                                                                                  <C>          
Per share data (for a share outstanding throughout each period):
Net asset value - beginning of period                                                $       10.00
                                                                                     -------------
Income from investment operations# -
   Net investment income{S}                                                          $        0.39
   Net realized and unrealized gain on investments and foreign currency transactions          3.00
                                                                                     -------------
      Total from investment operations                                               $        3.39
                                                                                     -------------
Less distributions declared to shareholders -
   From net investment income                                                        $       (0.24)
   From net realized gain on investments and foreign currency transactions                   (0.58)
                                                                                     -------------
      Total distributions declared to shareholders                                   $       (0.82)
                                                                                     -------------
Net asset value - end of period                                                      $       12.57
                                                                                     =============
Total return                                                                                33.94%++
Ratios (to average net assets)/Supplemental data{S}:
   Expenses                                                                                  1.00%+
   Net investment income                                                                     3.66%+
Portfolio turnover                                                                             94%
Net assets at end of period (000 omitted)                                            $       2,373

<FN>
  *For the period from the commencement of investment operations, January 3, 1995 to December 31, 1995.
  +Annualized.
 ++Not annualized.
  #Per share data is based on average shares outstanding.
{S}The adviser voluntarily agreed to maintain the expenses of the Series at not more than 1.00%
   of average daily net assets. To the extent actual expenses were over these limitations, the
   net investment income per share and the ratios would have been:
</FN>
<S>                                                                                  <C>          
      Net investment income                                                          $        0.17
      Ratios (to average net assets):
         Expenses                                                                            3.08%+
         Net investment income                                                               1.62%+
</TABLE>

See notes to financial statements
<PAGE>
NOTES TO FINANCIAL STATEMENTS

(1) Business and Organization
MFS Utilities Series (the Series) is a non-diversified series of MFS Variable
Insurance Trust (the Trust) which is comprised of the following twelve series:
MFS Bond Series, MFS Emerging Growth Series, MFS Growth Series, MFS Growth with
Income Series, MFS High Income Series, MFS Limited Maturity Series, MFS Money
Market Series, MFS Research Series, MFS Strategic Fixed Income Series, MFS Total
Return Series, MFS Utilities Series and MFS World Government Series. The Trust
is organized as a Massachusetts business trust and is registered under the
Investment Company Act of 1940, as amended, as an open-end management investment
company.

The shareholders of each Series of the Trust are separate accounts of insurance
companies which offer variable annuity and/or life insurance products. The
Series was seeded on or about February 1, 1994, but remained inactive until the
current period. The commencement of investment operations took place on January
3, 1995. As of December 31, 1995 there were nine shareholders in the Series.

(2) Significant Accounting Policies
Investment Valuations - Equity securities listed on securities exchanges or
reported through the NASDAQ system are valued at last sale prices. Unlisted
equity securities or listed equity securities for which last sale prices are not
available are valued at last quoted bid prices. Debt securities (other than
short-term obligations which mature in 60 days or less), including listed issues
and forward contracts, are valued on the basis of valuations furnished by
dealers or by a pricing service with consideration to factors such as
institutional-size trading in similar groups of securities, yield, quality,
coupon rate, maturity, type of issue, trading characteristics and other market
data, without exclusive reliance upon exchange or over-the-counter prices.
Short-term obligations, which mature in 60 days or less, are valued at amortized
cost, which approximates market value. Securities for which there are no such
quotations or valuations are valued at fair value as determined in good faith by
or at the direction of the Trustees.

Repurchase Agreements - The Series may enter into repurchase agreements with
institutions that the Series' investment adviser has determined are
creditworthy. Each repurchase agreement is recorded at cost. The Series requires
that the securities purchased in a repurchase transaction be transferred to the
custodian in a manner sufficient to enable the Series to obtain those securities
in the event of a default under the repurchase agreement. The Series monitors,
on a daily basis, the value of the securities transferred to ensure that the
value, including accrued interest, of the securities under each repurchase
agreement is greater than amounts owed to the Series under each such repurchase
agreement.

Foreign Currency Translation - Investment valuations, other assets, and
liabilities initially expressed in foreign currencies are converted each
business day into U.S. dollars based upon current exchange rates. Purchases and
sales of foreign investments, income and expenses are converted into U.S.
dollars based upon currency exchange rates prevailing on the respective dates of
such transactions. Gains and losses attributable to foreign currency exchange
rates on sales of securities are recorded for financial statement purposes as
net realized gains and losses on investments. Gains and losses attributable to
foreign exchange rate movements on income and expenses are recorded for
financial statement purposes as foreign currency transaction gains and losses.
That portion of both realized and unrealized gains and losses on investments
that results from fluctuations in foreign currency exchange rates is not
separately disclosed.

Deferred Organization Expenses - Costs incurred by the Series in connection with
its organization have been deferred and are being amortized on a straight-line
basis over a five-year period beginning on the date of commencement of
investment operations of the Series.

Forward Foreign Currency Exchange Contracts - The Series may enter into forward
foreign currency exchange contracts for the purchase or sale of a specific
foreign currency at a fixed price on a future date. Risks may arise upon
entering these contracts from the potential inability of counterparties to meet
the terms of their contracts and from unanticipated movements in the value of a
foreign currency relative to the U.S. dollar. The Series will enter into forward
contracts for hedging purposes as well as for non-hedging purposes. For hedging
purposes, the Series may enter into contracts to deliver or receive foreign
currency it will receive from or require for its normal investment activities.
It may also use contracts in a manner intended to protect foreign
currency-denominated securities from declines in value due to unfavorable
exchange rate movements. For non-hedging purposes, the Series may enter into
contracts with the intent of changing the relative exposure of the Series'
portfolio of securities to different currencies to take advantage of anticipated
changes. The forward foreign currency exchange contracts are adjusted by the
daily exchange rate of the underlying currency and any gains or losses are
recorded for financial statement purposes as unrealized until the contract
settlement date.

Investment Transactions and Income - Investment transactions are recorded on the
trade date. Interest income is recorded on the accrual basis. All premium and
original issue discount are amortized or accreted for financial statement and
tax reporting purposes as required by federal income tax regulations. Dividend
income is recorded on the ex-dividend date for dividends received in cash.
Dividend and interest payments received in additional securities are recorded on
the ex-dividend or ex-interest date in an amount equal to the value of the
security on such date.

Fees Paid Indirectly - The Series' custodian bank calculates its fee based on
the Series' average daily net assets. This fee is reduced according to an
expense offset arrangement with State Street Bank and Trust Company, the Trust's
dividend disbursing agent, which provides for partial reimbursement of custody
fees based on a formula developed to measure the value of cash deposited by the
Series with the custodian and with the dividend disbursing agent. This amount is
shown as a reduction of expenses on the Statement of Operations.

Tax Matters and Distributions - The Series' policy is to comply with the
provisions of the Internal Revenue Code (the Code) applicable to regulated
investment companies and to distribute to shareholders all of its taxable
income, including any net realized gain on investments. Accordingly, no
provision for federal income or excise tax is provided. The Series files a tax
return annually using tax accounting methods required under provisions of the
Code which may differ from generally accepted accounting principles, the basis
on which these financial statements are prepared. Accordingly, the amount of net
investment income and net realized gain reported on these financial statements
may differ from that reported on the Series' tax return and, consequently, the
character of distributions to shareholders reported in the financial highlights
may differ from that reported to shareholders on Form 1099-DIV. Distributions to
shareholders are recorded on the ex-dividend date.

The Series distinguishes between distributions on a tax basis and a financial
reporting basis and requires that only distributions in excess of tax basis
earnings and profits are reported in the financial statements as a return of
capital. Differences in the recognition or classification of income between the
financial statements and tax earnings and profits which result in temporary
over-distributions for financial statement purposes, are classified as
distributions in excess of net investment income or accumulated net realized
gains.

(3) Transactions with Affiliates
Investment Adviser - The Series has an investment advisory agreement with
Massachusetts Financial Services Company (MFS) to provide overall investment
advisory and administrative services, and general office facilities. The
management fee is computed daily and paid monthly at an effective annual rate of
0.75% of its average daily net assets. Under a temporary expense reimbursement
agreement with MFS, MFS has voluntarily agreed to limit the operating expenses
of the Series at levels which increase over time. Currently MFS has agreed to
limit the Series' expenses at an effective annual rate of 1.00% of its average
daily net assets. MFS will pay all Series expenses in excess of the current
limit subject to reimbursement by the Series at a later date. To the extent that
actual Series' expenses do not reach the limit, the Series will reimburse MFS
for prior expenses paid by MFS on behalf of the Series such that the Series'
expense ratio does not exceed 1.00% of its average daily net assets. At December
31, 1995, the aggregate unreimbursed expenses owed to MFS by the Series amounted
to $25,513.

The Series pays no compensation directly to its Trustees who are officers of the
investment adviser, or to officers of the Series, all of whom receive
remuneration for their services to the Series from MFS. Certain of the officers
and Trustees of the Series are officers or directors of MFS and MFS Service
Center, Inc. (MFSC).

Shareholder Servicing Agent - MFSC, a wholly owned subsidiary of MFS, earns a
fee for its services as shareholder servicing agent. The fee is calculated as a
percentage of the average daily net assets at an effective annual rate of up to
0.035%.

(4) Portfolio Securities
Purchases and sales of investments, other than purchased option transactions and
short-term obligations, were as follows:

<TABLE>
<CAPTION>
                                                                                Purchases          Sales
========================================================================================================
<S>                                                                        <C>             <C>          
   U.S. government securities                                              $      266,430        -
                                                                           --------------  -------------
   Investments (non-U.S. government securities)                            $    2,690,127  $   1,218,715
                                                                           ==============  =============
</TABLE>

The cost and unrealized appreciation or depreciation in value of the investments
owned by the Series, as computed on a federal income tax basis, are as follows:

<TABLE>
<CAPTION>
<S>                                                                                        <C>          
   Aggregate cost                                                                          $   2,274,228
                                                                                           -------------
   Gross unrealized appreciation                                                           $     248,775
   Gross unrealized depreciation                                                                 (12,623)
                                                                                           -------------
      Net unrealized appreciation                                                          $     236,152
                                                                                           =============
</TABLE>

(5) Shares of Beneficial Interest
The Trust's Declaration of Trust permits the Trustees to issue an unlimited
number of full and fractional shares of beneficial interest (without par value).
Transactions in Series shares were as follows:

<TABLE>
<CAPTION>
Period Ended December 31, 1995*                                                   Shares           Amount
=========================================================================================================
<S>                                                                             <C>        <C>           
Shares sold                                                                      322,691   $    3,789,585
Shares issued to shareholders in reinvestment of distributions                    11,463          143,519
Shares reacquired                                                               (146,236)      (1,810,493)
                                                                             -----------   --------------
   Net increase                                                                  187,918   $    2,122,611
                                                                             ===========   ==============

*For the period from the commencement of investment operations, January 3, 1995 to December 31, 1995.
</TABLE>

(6) Line of Credit
The Series entered into an agreement which enables it to participate with other
funds managed by MFS in an unsecured line of credit with a bank which permits
borrowings up to $350 million, collectively. Borrowings may be made to
temporarily finance the repurchase of Series shares. Interest is charged to each
fund, based on its borrowings, at a rate equal to the bank's base rate. In
addition, a commitment fee, based on the average daily unused portion of the
line of credit, is allocated among the participating funds at the end of each
quarter.

(7) Financial Instruments
The Series trades financial instruments with off-balance sheet risk in the
normal course of its investing activities in order to manage exposure to market
risks such as foreign currency exchange rates. These financial instruments
include forward foreign currency exchange contracts. The notional or contractual
amounts of these instruments represent the investment the Series has in
particular classes of financial instruments and does not necessarily represent
the amounts potentially subject to risk. The measurement of the risks associated
with these instruments is meaningful only when all related and offsetting
transactions are considered. At December 31, 1995, the Series had no such
commitments under these contracts.

(8) Restricted Securities
The Series may not invest more than 15% of its total assets in securities which
are subject to legal or contractual restrictions on resale. At December 31,
1995, the Series owned the following restricted securities (constituting 1.8% of
net assets) which may not be publicly sold without registration under the
Securities Act of 1933 (the 1933 Act). The Series does not have the right to
demand that such securities be registered. The value of these securities is
determined by valuations supplied by a pricing service or brokers or, if not
available, in good faith by or at the direction of the Trustees. Certain of
these securities may be offered and sold to "qualified institutional buyers"
under Rule 144A of the 1933 Act.

<TABLE>
<CAPTION>
                                                        Date of      Share
Description                                         Acquisition     Amount           Cost           Value
=========================================================================================================
<S>                                           <C>       <C>          <C>     <C>            <C>          
Central Costenera, ADR                        1/05/95 - 8/25/95      1,000   $     25,428   $      31,125
Compania Inversiones Telephone, 7%                      1/05/95        200         11,550          11,200
                                                                                            -------------
                                                                                            $      42,325
                                                                                            =============
</TABLE>
<PAGE>
INDEPENDENT AUDITORS' REPORT

To the Trustees of MFS Variable Insurance Trust and Shareholders of MFS
Utilities Series:

We have audited the accompanying statement of assets and liabilities, including
the portfolio of investments, of MFS Utilities Series (the Series) (one of the
series constituting MFS Variable Insurance Trust) as of December 31, 1995, the
related statements of operations and changes in net assets and financial
highlights for the period from January 3, 1995 (the commencement of investment
operations) to December 31, 1995. These financial statements and financial
highlights are the responsibility of the Series' management. Our responsibility
is to express an opinion on these financial statements and financial highlights
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 and financial highlights are
free of material misstatement. An audit includes examining, on a test basis,
evidence supporting the amounts and disclosures in the financial statements. Our
procedures included confirmation of the securities owned at December 31, 1995 by
correspondence with the custodian and brokers; where replies were not received
from brokers, we performed other auditing procedures. 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, such financial statements and financial highlights present
fairly, in all material respects, the financial position of MFS Utilities Series
at December 31, 1995, the results of its operations, the changes in its net
assets and its financial highlights for the stated period in conformity with
generally accepted accounting principles.



DELOITTE & TOUCHE LLP


Boston, Massachusetts
February 2, 1996








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

This report is prepared for the general information of shareholders. It is
authorized for distribution to prospective investors only when preceded or
accompanied by a current prospectus.
<PAGE>





                                                                 VUF-2-2/96/7.5M




<PAGE>
[LOGO]                                                       Annual Report for
THE FIRST NAME IN MUTUAL FUNDS                                      Year Ended
                                                             December 31, 1995


MFS(R) HIGH INCOME SERIES
A Series of MFS(R) Variable Insurance Trust
<PAGE>
MFS(R) HIGH INCOME SERIES
A SERIES OF MFS(R)  VARIABLE INSURANCE TRUST

TRUSTEES
A. Keith Brodkin*
Chairman and President
Nelson J. Darling, Jr.
Trustee, Eastern Enterprises
(diversified holding company)

William R. Gutow
Vice Chairman,

Capitol Entertainment
(Blockbuster Video Franchise)

PORTFOLIO MANAGER
Joan S. Batchelder*

TREASURER
W. Thomas London*

ASSISTANT TREASURER
James O. Yost*

SECRETARY
Stephen E. Cavan*

ASSISTANT SECRETARY
James R. Bordewick, Jr.*

INVESTMENT ADVISER
Massachusetts Financial Services Company
500 Boylston Street
Boston, MA 02116-3741

DISTRIBUTOR
MFS Fund Distributors, Inc.
500 Boylston Street
Boston, MA 02116-3741

SHAREHOLDER SERVICE CENTER
MFS Service Center, Inc.
P.O. Box 1400
Boston, MA 02107-9906

For additional information,
contact your financial adviser.

CUSTODIAN
Investors Bank & Trust Company

AUDITORS
Deloitte & Touche LLP



*Affiliated with the Investment Adviser
<PAGE>

Dear Contract Owner:

An environment of declining interest rates and a favorable outlook for inflation
helped establish a pattern of positive performance in both fixed-income and
equity markets around the world during the past 12 months. Yields on many
fixed-income securities continued to decline throughout the year, and as bond
prices rose in response to these declines, all of the fixed-income investments
in the Trust experienced positive total returns. At the same time, lower
interest rates and strong corporate earnings reports through most of the year
helped the prices of many stocks to rise over the period, producing strong
returns.

U.S. Outlook
Moderate but sustainable growth was the hallmark of the economic expansion's
fifth year, although some signs of sluggishness were evident late in the year.
Recent retail sales, for example, have been disappointing, in part because of
rising levels of consumer debt. In addition, growth is not expected to get much
help from the manufacturing sector as order flows from manufacturers have
moderated. Export activity, meanwhile, is also expected to remain modest as
continued weakness abroad limits demand for many U.S. goods. However, the
Federal Reserve Board's consistent and, so far, successful efforts to fight
inflation seem to be giving consumers and businesses enough longer-term
confidence to help maintain modest growth in real (adjusted for inflation) gross
domestic product into 1996.

Global Outlook
A pattern of slow to moderate growth and low and controlled inflation remains a
dominant theme in major industrialized countries, including the United States.
While the recent recovery of the dollar against the German mark and the Japanese
yen have added some strength to the economies of Europe and Japan, the outlook
is for sluggish economic growth, in the near term at least. And although moves
by central banks in Germany and Japan to lower interest rates have helped
stimulate domestic demand, many industrial companies in these countries are
still struggling to compete in a global marketplace in which the prices of their
products are less competitively priced. On the positive side, this does mean
little to no inflationary pressure in these countries, and we believe that this,
combined with further reductions in interest rates, could help provide a
foundation for stronger economic growth in the long run. Also, we believe that
many of the cost-cutting measures taken by companies in these countries over the
past few years will ultimately provide earnings leverage when economic growth
improves. Inflation in most overseas economies remains in a downward trend,
providing fixed-income investors with opportunities for relatively attractive
real rates of interest, possibly accompanied by moderate price appreciation.
While the dollar continues to represent a sound store of long-term value, its
relative strength in the near term is being restrained by the persistent U.S.
current-account deficit.

Bond Markets
Given the recent signs of economic weakness, prospects for the Federal Reserve
Board's further decreasing short-term interest rates are good. Long-term rates,
meanwhile, moved noticeably downward in the latter months of 1995 in
anticipation of more modest fourth-quarter growth with continued low inflation.
While there were some increases in commodity prices early in the year, companies
found it difficult to pass these on at the consumer level as they continue to
fight for market share. Additionally, unit labor costs remain under control and
seem to be growing at a pace that is near or below the ongoing inflation rate.
Thus, with long-term U.S. government bonds yielding approximately 6% in an
environment of 2% to 3% inflation, real rates of return in the fixed-income
markets remain relatively attractive.
<PAGE>
In world bond markets, slowing economic growth, low inflation, and declining
official interest rates helped result in solid performance during the past 12
months. European governments are engaged in multi-year programs to reduce their
budget deficits and debt levels. These programs are positive for bonds in that
lower government spending tends to reduce inflationary pressures and lower
issuance of government debt reduces supply pressures on the bond market. In the
Japanese market, powerful deflationary forces have supported a drop in yields to
historically low levels. We now feel this process may be drawing to an end,
given a reversal of priorities at the central bank from fighting inflation,
which is now non-existent, to offsetting the downward spiral of deflation. The
high returns of the U.S. bond market, as measured by the Lehman Brothers
Government Bond Index, have been echoed in other U.S. dollar-bloc markets,
including Australia, New Zealand, and Canada, all of which saw positive
performance over the past year according to Salomon Brothers. Currently, the
Australian market offers significantly higher yields than the U.S. market and,
we believe, represents good value. As long as the outlook for U.S. bonds remains
positive, these related markets could outperform the U.S. market.

Comments from the portfolio manager of this Series are presented below. We
appreciate your support and welcome any questions or comments you may have.

Respectfully,

/s/ A. Keith Brodkin                                  /s/ Joan S. Batchelder
- ----------------------                                ----------------------
A. Keith Brodkin                                      Joan S. Batchelder
Chairman and President                                Portfolio Manager

January 12, 1996

MFS(R) HIGH INCOME SERIES

The Series commenced investment operations on July 26, 1995, and provided a
total return of +5.25% from that date through December 31, 1995. This compares
to a +3.93% return for the Lipper High Yield Bond Fund Index for the same
period.*

High-yield bond prices firmed during 1995 due primarily to the decline in
interest rates. Strong market technicals helped fuel the rally as the supply of
new high-yield bonds declined slightly from the previous year while demand
increased due to higher net cash flows into high-yield mutual funds. During
1995, the spread between the yield on Treasury securities and high-yield bonds
widened to about 425 basis points (4.25%) from a low of 350 basis points
(3.50%), reflecting investors' concern over the rise in the default rate. The
principal value and interest on Treasury securities are guaranteed by the U.S.
government if held to maturity. We do not expect credit losses to increase
materially in 1996 because we believe that lower interest rates will enable the
economy to continue to grow, albeit at a slower pace than in 1995.

In response to weak economic data, our investment strategy became progressively
more defensive. We reduced our positions in the steel, chemical and paper
sectors because we believed that the softness in commodity prices during the
second half of the year signaled the beginning of a cyclical downturn and was
not simply due to a temporary inventory correction. We continued to increase the
Series' weightings in less economically sensitive industries such as cable
television, paging and supermarkets. The Series remains underweighted in the
bonds of retailers because we expect that overcapacity will cause weakness in
this sector well into 1996. Given our outlook for slow economic growth and low
inflation, we anticipate the Federal Reserve to further reduce interest rates in
1996. Therefore, our investment strategy remains focused on bonds in the
upper-credit-quality tier of the high-yield market. These high-yield bonds could
benefit the most from a drop in interest rates because their returns are most
closely correlated with shifts in interest rates.
<PAGE>
PORTFOLIO MANAGER PROFILE

Joan Batchelder first joined MFS in 1978 as an Investment officer in the
Fixed-Income department and rejoined MFS in October of 1983. A graduate of
Colorado College and Maxwell School of Syracuse University, Ms. Batchelder was
appointed Assistant Vice President - Investments in 1979, Vice President -
Investments in 1980 and Senior Vice President in 1983. She has managed the MFS
High Income Series since its inception in July 1995.

PERFORMANCE SUMMARY

The information below illustrates the performance of the MFS High Income Series
shares in comparison to a market indicator.

AGGREGATE TOTAL RETURNS

                                                                 7/26/95* -
                                                                12/31/95
===========================================================================
MFS High Income Series                                             +5.25%
- ---------------------------------------------------------------------------
Lipper High Yield Bond Fund Index+\1/                              +3.93%
- ---------------------------------------------------------------------------

All results are historical and, therefore, are not an indication of future
results. The investment return and principal value of an investment in the
product will vary with changes in market conditions, and shares, when redeemed,
may be worth more or less than their original cost. All Series results reflect
the applicable expense subsidy which is explained in the Notes to Financial
Statements. Had the subsidy not been in effect, the results would have been less
favorable. All Series results do not reflect expenses that would be imposed by
insurance company separate accounts.

  *Commencement of investment operations; benchmark comparisons are from
   July 31, 1995.
  +Lipper indices are equally weighted composites of the largest qualifying
   mutualfunds within their respective investment objectives, adjusted for
   reinvestment of distributions. It is not possible to invest in an index.
\1/Source: Lipper Analytical Services, Inc.
<PAGE>
PORTFOLIO OF INVESTMENTS - December 31, 1995

Bonds - 93.9%
================================================================================
                                               Principal Amount
Issuer                                            (000 Omitted)            Value
- --------------------------------------------------------------------------------
  Automotive - 5.3%
    Harvard Industries, Inc., 11.125s, 2005                 $50    $      50,000
    SPX Corp., 11.75s, 2002                                  50           53,000
                                                                   -------------
                                                                   $     103,000
- --------------------------------------------------------------------------------
  Building - 6.0%
    American Standard Companies, Inc., 0s to 1998,          $50    $      42,875
     10.5s to 2005
    Nortek, Inc., 9.875s, 2004                               50          46,750
    USG Corp., 9.25s, 2001                                   25           26,750
                                                                   -------------
                                                                   $     116,375
- --------------------------------------------------------------------------------
  Chemicals - 2.7%
    NL Industries, Inc., 11.75s, 2003                       $50    $      53,375
- --------------------------------------------------------------------------------
  Consumer Goods and Services - 7.4%
    ADT Operations, Inc., 9.25s, 2003                       $40    $      42,900
    Revlon Consumer Products Corp., 10.5s, 2003              50           51,000
    Westpoint Stevens, Inc., 9.375s, 2005                    50           49,375
                                                                   -------------
                                                                   $     143,275
- --------------------------------------------------------------------------------
  Containers - 2.3%
    Owens-Illinois, Inc., 11s, 2003                         $40    $      45,200
- --------------------------------------------------------------------------------
  Entertainment - 6.7%
    Bally's Grand, Inc., 10.375s, 2003                      $50    $      51,000
    Grand Casinos, Inc., 10.125s, 2003                       25           26,219
    SCI Television, Inc., 11s, 2005                          50           52,875
                                                                   -------------
                                                                   $     130,094
- --------------------------------------------------------------------------------
  Financial Institutions - 0.7%
    GPA Delaware, Inc., 8.75s, 1998                         $15    $      14,100
- --------------------------------------------------------------------------------
  Medical and Health Products - 4.3%
    Tenet Healthcare Corp., 10.125s, 2005                   $75    $      83,438
- --------------------------------------------------------------------------------
  Medical and Health Technology and Services - 2.7%
    Quorum Health Group, Inc., 8.75s, 2005                  $50    $      51,688
- --------------------------------------------------------------------------------
  Metals and Minerals - 2.4%
    Jorgensen (Earle M.) Co., 10.75s, 2000                  $50    $      45,875
- --------------------------------------------------------------------------------
  Oil - 2.1%
    Gulf Canada Resources Ltd., 9.25s, 2004                 $40    $      41,400
- --------------------------------------------------------------------------------
  Printing and Publishing - 2.2%
    K-III Communications Corp., 10.625s, 2002               $40    $      42,500
- --------------------------------------------------------------------------------
  Restaurants and Lodging - 2.7%
    Boyd Gaming Corp., 10.75s, 2003                         $50    $      52,750
- --------------------------------------------------------------------------------
<PAGE>
PORTFOLIO OF INVESTMENTS - continued

Bonds - continued
================================================================================
                                               Principal Amount
Issuer                                             (000 Omitted)           Value
- --------------------------------------------------------------------------------
  Special Products and Services - 7.7%
    Buckeye Cellulose Corp., 8.5s, 2005                     $10    $      10,263
    IMO Industries, Inc., 12s, 2001                          40           40,800
    Interlake Corp., 12s, 2001                               50           50,500
    Synthetic Industries, Inc., 12.75s, 2002                 50           49,000
                                                                   -------------
                                                                   $     150,563
- --------------------------------------------------------------------------------
  Steel - 2.9%
    AK Steel Holding Corp., 10.75s, 2004                    $50    $      55,500
- --------------------------------------------------------------------------------
  Stores - 1.7%
    Finlay Enterprises, Inc., 0s to 1998, 12s to 2005       $50    $      33,000
- --------------------------------------------------------------------------------
  Supermarkets - 11.5%
    Bruno's, Inc., 10.5s, 2005                              $50    $      49,500
    Dominick's Finer Foods, Inc, 10.875s, 2005               75           79,688
    Grand Union Co., 12s, 2004                               25           21,625
    Ralph's Grocery Co., 10.45s, 2004                        50           50,750
    Stop & Shop Companies, Inc., 9.75s, 2002                 20           22,050
                                                                   -------------
                                                                   $     223,613
- --------------------------------------------------------------------------------
  Telecommunications - 7.4%
    Metrocall, Inc., 10.375s, 2007                          $50    $      53,000
    Mobilemedia Communications Corp., 0s to 1998,
      10.5s to 2003                                          50           39,000
    Paging Network, Inc., 8.875s, 2006                       50           51,250
                                                                   -------------
                                                                   $     143,250
- --------------------------------------------------------------------------------
  Telecommunications - Cable systems - 12.7%
    Bell Cablemedia PLC, 0s to 2000, 11.875s to 2005##      $50    $      31,250
    Cablevision Systems Corp., 9.25s, 2005                   50           52,250
    Comcast Corp., 9.375s, 2005                              50           52,875
    Continental Cablevision, Inc. 8.875s, 2005               40           41,900
    Diamond Cable Communications PLC, 0s to 2000,
           11.75s to 2005                                    10            5,875
    Rogers Cablesystems Ltd., 10.125s, 2012                  50           52,625
    Videotron Ltee, 10.25s, 2002                             10           10,500
                                                                   -------------
                                                                   $     247,275
- --------------------------------------------------------------------------------
  Utilities - Electric - 2.6%
    Westinghouse Electric Corp., 8.375s, 2002               $50    $      51,570
- --------------------------------------------------------------------------------
Total Bonds (Identified Cost, $1,799,263)                          $   1,827,838
- --------------------------------------------------------------------------------
Other Assets, Less Liabilities - 6.1%                                    118,653
================================================================================
Net Assets - 100.0%                                                $   1,946,491
- --------------------------------------------------------------------------------
## SEC Rule 144A restriction.

See notes to financial statements
<PAGE>
FINANCIAL STATEMENTS

Statement of Assets and Liabilities
===============================================================================
December 31, 1995
- -------------------------------------------------------------------------------
Assets:
   Investments, at value (identified cost, $1,799,263)           $    1,827,838
   Cash                                                                  79,842
   Interest receivable                                                   38,017
   Receivable from investment adviser                                     6,317
   Deferred organization expenses                                         8,398
                                                                 --------------
         Total assets                                            $    1,960,412
                                                                 --------------
Liabilities:
   Payable to affiliate for management fee                       $          120
   Accrued expenses and other liabilities                                13,801
                                                                 --------------
         Total liabilities                                       $       13,921
                                                                 --------------
Net assets                                                       $    1,946,491
                                                                 --------------
Net assets consist of:
   Paid-in capital                                               $    1,920,119
   Unrealized appreciation on investments                                28,575
   Accumulated net realized loss on investments                          (2,558)
   Accumulated undistributed net investment income                          355
                                                                 --------------
         Total                                                   $    1,946,491
                                                                 ==============
Shares of beneficial interest outstanding                               189,145
                                                                 ==============
Net asset value, offering price and redemption price per share
  (net assets of $1,946,491 / 189,145 shares of beneficial
  interest outstanding)                                              $10.29
                                                                 ==============

See notes to financial statements
<PAGE>
FINANCIAL STATEMENTS - continued

Statement of Operations
===============================================================================
Period Ended December 31, 1995*
- -------------------------------------------------------------------------------
Net investment income:
   Interest income                                                $      48,889
                                                                  -------------
   Expenses -
      Management fee                                              $       3,996
      Trustees' compensation                                                708
      Shareholder servicing agent fee                                       181
      Auditing fees                                                      10,593
      Printing                                                            4,032
      Legal fees                                                          1,975
      Amortization of organization expenses                                 790
      Custodian fee                                                         180
      Miscellaneous                                                         876
                                                                  -------------
         Total expenses                                           $      23,331
      Reduction of expenses by investment adviser                       (17,847)
      Fees paid indirectly                                                 (157)
                                                                  -------------
         Net expenses                                             $       5,327
                                                                  -------------
            Net investment income                                 $      43,562
                                                                  -------------
Realized and unrealized gain (loss) on investments:
   Realized loss (identified cost basis) on
     net investment transactions                                  $      (2,558)
   Change in unrealized appreciation on investments                      28,575
                                                                  -------------
      Net realized and unrealized gain on investments             $      26,017
                                                                  -------------
        Increase in net assets from operations                    $      69,579
                                                                  =============

*For the period from the commencement of investment operations, July 26, 1995
 to December 31, 1995.

See notes to financial statements
<PAGE>
FINANCIAL STATEMENTS - continued

Statement of Changes in Net Assets
===============================================================================
Period Ended December 31, 1995*
- -------------------------------------------------------------------------------
Increase (decrease) in net assets:
From operations -
   Net investment income                                          $      43,562
   Net realized loss on investments                                      (2,558)
   Net unrealized gain on investments                                    28,575
                                                                  -------------
      Increase in net assets from operations                      $      69,579
                                                                  -------------

Distributions declared to shareholders from net
  investment income                                               $     (43,207)
                                                                  -------------
Series share (principal) transactions -
   Net proceeds from sale of shares                               $   2,003,297
   Net asset value of shares issued to shareholders in
     reinvestment of distributions                                       43,207
   Cost of shares reacquired                                           (134,985)
                                                                  -------------
      Increase in net assets from Series share transactions       $   1,911,519
                                                                  -------------
         Total increase in net assets                             $   1,937,891
Net assets:
   At beginning of period                                                 8,600
                                                                  -------------
   At end of period (including accumulated undistributed
      net investment income of $355)                              $   1,946,491
                                                                  =============

*For the period from the commencement of investment operations, July 26, 1995 to
 December 31, 1995.

See notes to financial statements
<PAGE>
FINANCIAL STATEMENTS - continued

Financial Highlights
===============================================================================
Period Ended December 31, 1995*
- -------------------------------------------------------------------------------
Per share data (for a share outstanding throughout each period)
Net asset value - beginning of period                              $    10.00
                                                                   ----------
Income from investment operations# -
   Net investment incomes{s}                                       $     0.34
   Net realized and unrealized gain on investments                       0.18
                                                                   ----------
      Total from investment operations                             $     0.52
                                                                   ----------
Less distributions declared to shareholders -
   From net investment income                                      $    (0.23)
                                                                   ----------
Net asset value - end of period                                    $    10.29
                                                                   ----------
Total return                                                            5.25%++
 Ratios (to average net assets)/Supplemental data{S}:
   Expenses                                                             1.00%+
   Net investment income                                                8.17%+
Portfolio turnover                                                        32%
Net assets at end of period (000 omitted)                          $    1,946


  *For the period from the commencement of investment operations,
   July 26, 1995 to December 31, 1995.
  +Annualized.
 ++Not annualized.
  #Per share data is based on average shares outstanding.
{s}The adviser voluntarily agreed to maintain the expenses of the Series at
   not more than 1.00% of average daily net assets. To the extent actual
   expenses were over these limitations, the net investment income per share and
   the ratios would have been:

      Net investment income                                         $    0.20
      Ratios (to average net assets):
         Expenses                                                       4.38%+
         Net investment income                                          4.82%+

See notes to financial statements
<PAGE>
NOTES TO FINANCIAL STATEMENTS

(1) Business and Organization
MFS High Income Series (the Series) is a diversified series of MFS Variable
Insurance Trust (the Trust) which is comprised of the following twelve series:
MFS Bond Series, MFS Emerging Growth Series, MFS Growth Series, MFS Growth with
Income Series, MFS High Income Series, MFS Limited Maturity Series, MFS Money
Market Series, MFS Research Series, MFS Strategic Fixed-Income Series, MFS Total
Return Series, MFS Utilities Series and MFS World Governments Series. The Trust
is organized as a Massachusetts business trust and is registered under the
Investment Company Act of 1940, as amended, as an open-end management investment
company.

The shareholders of each Series of the Trust are separate accounts of insurance
companies which offer variable annuity and/or life insurance products. The
Series was seeded on or about February 1, 1994, but remained inactive until the
current period. The commencement of investment operations took place on July 26,
1995. As of December 31, 1995 there were five shareholders in the Series.

(2) Significant Accounting Policies
Investment Valuations - Debt securities (other than short-term obligations which
mature in 60 days or less), including listed issues, are valued on the basis of
valuations furnished by dealers or by a pricing service with consideration to
factors such as institutional-size trading in similar groups of securities,
yield, quality, coupon rate, maturity, type of issue, trading characteristics
and other market data, without exclusive reliance upon exchange or
over-the-counter prices. Short-term obligations, which mature in 60 days or
less, are valued at amortized cost, which approximates value. Securities for
which there are no such quotations or valuations are valued at fair value as
determined in good faith by or at the direction of the Trustees.

Repurchase Agreements - The Series may enter into repurchase agreements with
institutions that the Series' investment adviser has determined are
creditworthy. Each repurchase agreement is recorded at cost. The Series requires
that the securities purchased in a repurchase transaction be transferred to the
custodian in a manner sufficient to enable the Series to obtain those securities
in the event of a default under the repurchase agreement. The Series monitors,
on a daily basis, the value of the securities transferred to ensure that the
value, including accrued interest, of the securities under each repurchase
agreement is greater than amounts owed to the Series under each such repurchase
agreement.

Deferred Organization Expenses - Costs incurred by the Series in connection with
its organization have been deferred and are being amortized on a straight-line
basis over a five-year period beginning on the date of commencement of
investment operations of the Series.

Investment Transactions and Income - Investment transactions are recorded on the
trade date. Interest income is recorded on the accrual basis. All premium and
original issue discount are amortized or accreted for financial statement and
tax reporting purposes as required by federal income tax regulations. Dividend
income is recorded on the ex-dividend date for dividends received in cash.
Dividend and interest payments received in additional securities are recorded on
the ex-dividend or ex-interest date in an amount equal to the value of the
security on such date.

The Series can invest up to 100% of its portfolio in high-yield securities rated
below investment grade. Investments in high-yield securities are accompanied by
a greater degree of credit risk and the risk tends to be more sensitive to
economic conditions than that of higher rated securities.

Fees Paid Indirectly - The Series' custodian bank calculates its fee based on
the Series' average daily net assets. This fee is reduced according to an
expense offset arrangement with State Street Bank and Trust Company, the Trust's
dividend disbursing agent, which provides for partial reimbursement of custody
fees based on a formula developed to measure the value of cash deposited by the
Series with the custodian and with the dividend disbursing agent. This amount is
shown as a reduction of expenses in the Statement of Operations.

Tax Matters and Distributions - The Series' policy is to comply with the
provisions of the Internal Revenue Code (the Code) applicable to regulated
investment companies and to distribute to shareholders all of its taxable
income, including any net realized gain on investments. Accordingly, no
provision for federal income or excise tax is provided. The Series files a tax
return annually using tax accounting methods required under provisions of the
Code which may differ from generally accepted accounting principles, the basis
on which these financial statements are prepared. Accordingly, the amount of net
investment income and net realized gain reported on these financial statements
may differ from that reported on the Series' tax return. Distributions to
shareholders are recorded on the ex-dividend date.

The Series distinguishes between distributions on a tax basis and a financial
reporting basis and requires that only distributions in excess of tax basis
earnings and profits are reported in the financial statements as a return of
capital. Differences in the recognition or classification of income between the
financial statements and tax earnings and profits which result in temporary
over-distributions for financial statement purposes, are classified as
distributions in excess of net investment income or accumulated net realized
gains.

At December 31, 1995, the Series, for federal income tax purposes, had a capital
loss carryforward of $2,558, which may be applied against any net taxable
realized gains of each succeeding year until the earlier of its utilization or
expiration on December 31, 2003.

(3) Transactions with Affiliates
Investment Adviser - The Series has an investment advisory agreement with
Massachusetts Financial Services Company (MFS) to provide overall investment
advisory and administrative services, and general office facilities. The
management fee is computed daily and paid monthly at an effective annual rate of
0.75% of its average daily net assets. Under a temporary expense reimbursement
agreement with MFS, MFS has voluntarily agreed to limit the operating expenses
of the Series at levels which increase over time. Currently MFS has agreed to
limit the Series' expenses at an effective annual rate of 1.00% of its average
daily net assets. MFS will pay all Series expenses in excess of the current
limit subject to reimbursement by the Series at a later date. To the extent that
actual Series expenses do not reach the limit, the Series will reimburse MFS for
prior expenses paid by MFS on behalf of the Series such that the Series' expense
ratio does not exceed 1.00% of its average daily net assets. At December 31,
1995, the aggregate unreimbursed expenses owed to MFS by the Series amounted to
$17,847.

The Series pays no compensation directly to its Trustees who are officers of the
investment adviser, or to officers of the Series, all of whom receive
remuneration for their services to the Series from MFS. Certain of the officers
and Trustees of the Series are officers or directors of MFS and MFS Service
Center, Inc. (MFSC).

Shareholder Servicing Agent - MFSC, a wholly owned subsidiary of MFS, earns a
fee for its services as shareholder servicing agent. The fee is calculated as a
percentage of the average daily net assets at an effective annual rate of up to
0.035%.

(4) Portfolio Securities
Purchases and sales of investments, other than U.S. government securities,
purchased option transactions and short-term obligations, aggregated $2,196,032
and $397,325, respectively.

The cost and unrealized appreciation or depreciation in value of the investments
owned by the Series, as computed on a federal income tax basis, are as follows:

   Aggregate cost                                                  $  1,799,263
                                                                   ============
   Gross unrealized appreciation                                   $     36,047
   Gross unrealized depreciation                                         (7,472)
                                                                   ------------
   Net unrealized appreciation                                     $     28,575
                                                                   ============

(5) Shares of Beneficial Interest
The Trust's Declaration of Trust permits the Trustees to issue an unlimited
number of full and fractional shares of beneficial interest (without par value).
Transactions in Series shares were as follows:

Period Ended December 31, 1995*                           Shares)        Amount)
===============================================================================
Shares sold                                              197,072   $  2,003,297
Shares issued to shareholders in reinvestment
  of distributions                                         4,211         43,207)
Shares reacquired                                        (12,998)      (134,985)
                                                         -------   ------------
Net increase                                             188,285   $  1,911,519)
                                                         =======   ============ 

*For the period from commencement of investment operations,July 26, 1995 to
 December 31, 1995.

(6) Line of Credit
The Series entered into an agreement which enables it to participate with other
funds managed by MFS in an unsecured line of credit with a bank which permits
borrowings up to $350 million, collectively. Borrowings may be made to
temporarily finance the repurchase of Series shares. Interest is charged to each
fund, based on its borrowings, at a rate equal to the bank's base rate. In
addition, a commitment fee, based on the average daily unused portion of the
line of credit, is allocated among the participating funds at the end of each
quarter.

(7) Restricted Securities
The Series may not invest more than 15% of its total assets in securities which
are subject to legal or contractual restrictions on resale. At December 31,
1995, the Series owned the following restricted security (constituting 1.6% of
net assets) which may not be sold publicly without registration under the
Securities Act of 1933 (the 1933 Act). The Series does not have the right to
demand that such a security be registered. The value of this security is
determined by valuations supplied by a pricing service or brokers, or, if not
available, in good faith by or at the direction of the Trustee. This security
may be offered and sold to "qualified institutional buyers" under Rule 144A of
the 1933 Act.

                                     Date of         Par
Description                      Acquisition       Amount      Cost        Value
================================================================================
   Bell Cablemedia PLC,
      0s to 2000, 11.875s to 2005    9/13/95      $50,000   $29,744      $31,250
<PAGE>
INDEPENDENT AUDITORS' REPORT

To the Trustees of MFS Variable Insurance Trust and Shareholders of MFS High
Income Series:

We have audited the accompanying statement of assets and liabilities, including
the portfolio of investments, of MFS High Income Series (the Series) (one of the
series constituting the MFS Variable Insurance Trust) as of December 31, 1995,
the related statements of operations and changes in net assets and financial
highlights for the period from July 26, 1995 (the commencement of investment
operations) to December 31, 1995. These financial statements and financial
highlights are the responsibility of the Series' management. Our responsibility
is to express an opinion on these financial statements and financial highlights
based on our audits.

We conducted our audits 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 and financial
highlights are free of material misstatement. An audit includes examining, on a
test basis, evidence supporting the amounts and disclosures in the financial
statements. Our procedures included confirmation of the securities owned at
December 31, 1995 by correspondence 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 audits provide a reasonable basis for our opinion.

In our opinion, such financial statements and financial highlights present
fairly, in all material respects, the financial position of MFS High Income
Series at December 31, 1995, the results of its operations, the changes in its
net assets and its financial highlights for the stated period in conformity with
generally accepted accounting principles.

DELOITTE & TOUCHE LLP

Boston, Massachusetts
February 2, 1996





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

This report is prepared for the general information of shareholders. It is
authorized for distribution to prospective investors only when preceded or
accompanied by a current prospectus.
<PAGE>



                                                                 VHI-2-2/96/7M




<PAGE>

[logo] MFS(R)                                                 Annual Report for
THE FIRST NAME IN MUTUAL FUNDS                                Year Ended
                                                              December 31, 1995

MFS(R) WORLD GOVERNMENTS SERIES
A Series of MFS(R) Variable Insurance Trust
<PAGE>

MFS(R) WORLD GOVERNMENTS SERIES

A SERIES OF MFS(R) VARIABLE INSURANCE TRUST


TRUSTEES
A. Keith Brodkin*
Chairman and President

Nelson J. Darling, Jr.
Trustee, Eastern Enterprises
(diversified holding company)

William R. Gutow
Vice Chairman,
Capitol Entertainment
(Blockbuster Video Franchise)

PORTFOLIO MANAGER
Stephen C. Bryant*

TREASURER
W. Thomas London*

ASSISTANT TREASURER
James O. Yost*

SECRETARY
Stephen E. Cavan*

ASSISTANT SECRETARY
James R. Bordewick, Jr.*

INVESTMENT ADVISER
Massachusetts Financial Services Company
500 Boylston Street
Boston, MA 02116-3741

DISTRIBUTOR
MFS Fund Distributors, Inc.
500 Boylston Street
Boston, MA 02116-3741

SHAREHOLDER SERVICE CENTER
MFS Service Center, Inc.
P.O. Box 1400
Boston, MA 02107-9906

For additional information,
contact your financial adviser.

CUSTODIAN
Investors Bank & Trust Company

AUDITORS
Deloitte & Touche LLP

*Affiliated with the Investment Adviser
<PAGE>

Dear Contract Owner:
An environment of declining interest rates and a favorable outlook for inflation
helped establish a pattern of positive performance in both fixed-income and
equity markets around the world during the past 12 months. Yields on many
fixed-income securities continued to decline throughout the year, and as bond
prices rose in response to these declines, all of the fixed-income investments
in the Trust experienced positive total returns. At the same time, lower
interest rates and strong corporate earnings reports through most of the year
helped the prices of many stocks to rise over the period, producing strong
returns.

U.S. Outlook
Moderate but sustainable growth was the hallmark of the economic expansion's
fifth year, although some signs of sluggishness were evident late in the year.
Recent retail sales, for example, have been disappointing, in part because of
rising levels of consumer debt. In addition, growth is not expected to get much
help from the manufacturing sector as order flows from manufacturers have
moderated. Export activity, meanwhile, is also expected to remain modest as
continued weakness abroad limits demand for many U.S. goods. However, the
Federal Reserve Board's consistent and, so far, successful efforts to fight
inflation seem to be giving consumers and businesses enough longer-term
confidence to help maintain modest growth in real (adjusted for inflation) gross
domestic product into 1996.

Global Outlook
A pattern of slow to moderate growth and low and controlled inflation remains a
dominant theme in major industrialized countries, including the United States.
While the recent recovery of the dollar against the German mark and the Japanese
yen has added some strength to the economies of Europe and Japan, the outlook is
for sluggish economic growth, in the near term at least. And although moves by
central banks in Germany and Japan to lower interest rates have helped stimulate
domestic demand, many industrial companies in these countries are still
struggling to compete in a global marketplace in which the prices of their
products are less competitively priced. On the positive side, this does mean
little to no inflationary pressure in these countries, and we believe that this,
combined with further reductions in interest rates, could help provide a
foundation for stronger economic growth in the long run. Also, we believe that
many of the cost-cutting measures taken by companies in these countries over the
past few years will ultimately provide earnings leverage when economic growth
improves. Inflation in most overseas economies remains in a downward trend,
providing fixed-income investors with opportunities for relatively attractive
real rates of interest, possibly accompanied by moderate price appreciation.
While the dollar continues to represent a sound store of long-term value, its
relative strength in the near term is being restrained by the persistent U.S.
current-account deficit.

Bond Markets
Given the recent signs of economic weakness, prospects for the Federal Reserve
Board's further decreasing short-term interest rates are good. Long-term rates,
meanwhile, moved noticeably downward in the latter months of 1995 in
anticipation of more modest fourth-quarter growth with continued low inflation.
While there were some increases in commodity prices early in the year, companies
found it difficult to pass these on at the consumer level as they continue to
fight for market share. Additionally, unit labor costs remain under control and
seem to be growing at a pace that is near or below the ongoing inflation rate.
Thus, with long-term U.S. government bonds yielding approximately 6% in an
environment of 2% to 3% inflation, real rates of return in the fixed-income
markets remain relatively attractive.

In world bond markets, slowing economic growth, low inflation, and declining
official interest rates helped result in solid performance during the past 12
months. European governments are engaged in multi-year programs to reduce their
budget deficits and debt levels. These programs are positive for bonds in that
lower government spending tends to reduce inflationary pressures and lower
issuance of government debt reduces supply pressures on the bond market. In the
Japanese market, powerful deflationary forces have supported a drop in yields to
historically low levels. We now feel this process may be drawing to an end,
given a reversal of priorities at the central bank from fighting inflation,
which is now non-existent, to offsetting the downward spiral of deflation. The
high returns of the U.S. bond market, as measured by the Lehman Brothers
Government Bond Index, have been echoed in other U.S. dollar-bloc markets,
including Australia, New Zealand, and Canada, all of which saw positive
performance over the past year according to Salomon Brothers. Currently, the
Australian market offers significantly higher yields than the U.S. market, and,
we believe, represents good value. As long as the outlook for U.S. bonds remains
positive, these related markets could outperform the U.S. market.

Comments from the portfolio manager of this Series are presented below. We
appreciate your support and welcome any questions or comments you may have.

Respectfully,

/s/ A Keith Brodkin                     /s/ Stephen C. Bryant

    A. Keith Brodkin                        Stephen C. Bryant
    Chairman and President                  Portfolio Manager

January 12, 1996

MFS(R) WORLD GOVERNMENTS SERIES

Fueled by sluggish world economic growth, stable to lower inflation, and
monetary easing by most central banks, all international bond markets registered
positive returns for the year. In many instances these returns equalled or
surpassed U.S. results when measured in local currency terms. In this
environment, the Series provided a total return of +14.38%, underperforming the
+19.31% return of the J.P. Morgan Global Government Bond Index for the year
ended December 31, 1995. Our overweighting in core European markets and Japan
contributed to performance, while our underweighting in the U.S. market in the
first part of the year had a negative effect on performance.

Two of the best-performing markets were found within the U.S. dollar bloc,
notably Canada and Australia. Both countries continue to possess lower inflation
than the U.S. market, as well as higher real interest rates and attractive
nominal yield spreads. The portfolio's performance was enhanced by an
overweighted position in both of these markets. However, overall performance was
negatively impacted due to shorter durations in the U.S. bonds held during the
first half of the year.

In the European bloc, the best-performing markets were those of Sweden and
Spain. Following interest rate cuts throughout western Europe, the portfolio
benefited from overweighted European bond positions. More specifically, the core
markets, such as Germany and the Netherlands, continued to provide solid returns
against a backdrop of slow growth, low inflation, and declining interest rates.
Other markets, such as Denmark's, offered a combination of higher yields with
moderate growth and low inflation. The higher-yielding European markets have
recovered during the past six months, and the portfolio has benefited by
increasing the weighting and lengthening the duration in both Spanish and
Italian issues.

In addition to these economic developments, many European governments are
entering into multi-year programs to reduce their budget deficits and debt
levels which are quite similar to those of the United States. These programs are
positive for bonds, in that lower government spending tends to reduce
inflationary pressures and lower issuance of government debt reduces the supply
pressures in the bond market.

In currency terms, the dollar did recover some ground lost during the first half
of the year. The Japanese yen was especially strong over the first half but gave
back almost all these gains versus the dollar by year-end. Due primarily to
falling German inflation compared to stable U.S. inflation, the German mark
appreciated 7.7% over the dollar for the year. However, with favorable U.S.
short-term interest rate spreads, the dollar consolidated at year-end and now
appears relatively attractive.



PORTFOLIO MANAGER PROFILE

Stephen Bryant joined MFS in 1987 as an Assistant Vice President - Investments
in the International Fixed-Income Department. He was named Vice President -
Investments in 1989 and Senior Vice President in 1993. Mr. Bryant is a graduate
of Wesleyan University. He has managed the MFS World Governments Series since
its inception in June 1994.

PERFORMANCE SUMMARY

The information below illustrates the historical performance of MFS World
Governments Series shares in comparison to various market indicators. Series
results do not reflect the deduction of any applicable surrender charge.
Benchmark comparisons are unmanaged and do not reflect any fees or expenses. You
cannot invest in an index. All results reflect the reinvestment of all dividends
and capital gains.

GROWTH OF A HYPOTHETICAL $10,000 INVESTMENT
(For the Period from July 1, 1994 to December 31, 1995)

        MFS World      J.P. Morgan     Consumer
         Govts.        Global Govt.     Price
         Series        Bond Index       Index
- ------------------------------------------------
 7/94    10,000          10,000         10,000
 9/94     9,920          10,120         10,090
12/94    10,050          10,160         10,120
 3/95    10,890          11,180         10,230
 6/95    11,180          11,740         10,300
 9/95    11,120          11,730         10,350
12/95    11,505          12,125         10,372

AVERAGE ANNUAL TOTAL RETURNS                                      6/14/94*-
                                                  1 Year         12/31/95
- -------------------------------------------------------------------------------
MFS World Governments Series                      +14.38%         + 9.62%
- -------------------------------------------------------------------------------
J.P. Morgan Global Government Bond Index#(1)      +19.31%         +13.71%
- -------------------------------------------------------------------------------
Consumer Price Index{S}(2)                        + 2.54%         + 2.46%
- -------------------------------------------------------------------------------

All results are historical and, therefore, are not an indication of future
results. The investment return and principal value of an investment in the
product will vary with changes in market conditions, and shares, when redeemed,
may be worth more or less than their original cost. All Series results reflect
the applicable expense subsidy which is explained in the Notes to Financial
Statements. Had the subsidy not been in effect, the results would have been less
favorable. All Series results do not reflect expenses that would be imposed by
insurance company separate accounts.

  * Commencement of investment operations; benchmark comparisons are from July
    1, 1994.
  # The J.P. Morgan Global Government Bond Index is an aggregate index of
    actively traded government bonds issued from 13 countries, including the
    United States, with remaining maturities of at least one year.
{S} The Consumer Price Index is a popular measure of change in prices.
(1) Source: Asset Investment Management (AIM) software.
(2) Source: Lipper Analytical Services, Inc.

<PAGE>

PORTFOLIO OF INVESTMENTS - December 31, 1995

<TABLE>
<CAPTION>
Bonds - 82.9%
- -----------------------------------------------------------------------------------------------
                                                                Principal Amount
Issuer                                                             (000 Omitted)         Value
- -----------------------------------------------------------------------------------------------
<S>                                                          <C>        <C>        <C>         
Foreign Denominated - 47.7%
   Australia - 3.8%
       Commonwealth of Australia, 9.75s, 2002                AUD             200   $   161,376
       Commonwealth of Australia, 9.5s, 2003                                 150       120,141
                                                                                   ------------
                                                                                   $   281,517
- -----------------------------------------------------------------------------------------------
   Canada - 1.8%
       Government of Canada, 8.75s, 2005                     CAD             160   $   131,037
- -----------------------------------------------------------------------------------------------
   Denmark - 2.6%
       Kingdom of Denmark, 9s, 1998                          DKK             208   $    40,781
       Kingdom of Denmark, 9s, 2000                                          615       123,000
       Kingdom of Denmark, 8s, 2001                                          162        31,235
                                                                                   ------------
                                                                                   $   195,016
- -----------------------------------------------------------------------------------------------
   France - 7.1%
       Government of France, 7s, 1999                        FRF             990   $   211,083
       Government of France, 7.75s, 2000                                   1,450       316,998
                                                                                   ------------
                                                                                   $   528,081
- -----------------------------------------------------------------------------------------------
   Germany - 5.6%
       Republic of Germany, 6.5s, 2003                       DEM             435   $   315,386
       Republic of Germany, 6.875s, 2005                                     136       100,260
                                                                                   ------------
                                                                                   $   415,646
- -----------------------------------------------------------------------------------------------
   Italy - 5.1%
       Republic of Italy, 8.5s, 1999                         ITL         350,000   $   212,161
       Republic of Italy, 9.5s, 1999                                     100,000        61,563
       Republic of Italy, 8.5s, 2004                                     180,000       100,832
                                                                                   ------------
                                                                                   $   374,556
- -----------------------------------------------------------------------------------------------
   Netherlands - 3.5%
       Government of Netherlands, 8.25s, 2007                NLG             364   $   262,524
- -----------------------------------------------------------------------------------------------
   New Zealand - 2.5%
       Government of New Zealand, 10s, 2002                  NZD             250   $   184,335
- -----------------------------------------------------------------------------------------------
   Spain - 9.3%
       Government of Spain, 10.5s, 2003                      ESP          67,400   $   578,181
       Government of Spain, 10.9s, 2003                                   13,000       113,667
                                                                                   ------------
                                                                                   $   691,848
- -----------------------------------------------------------------------------------------------
   United Kingdom - 6.4%
       United Kingdom Gilts, 8s, 2000                        GBP             100   $   162,818
       United Kingdom Gilts, 7s, 2001                                        200       310,792
                                                                                   ------------
                                                                                   $   473,610
- -----------------------------------------------------------------------------------------------
Total Foreign Denominated                                                          $ 3,538,170
- -----------------------------------------------------------------------------------------------
</TABLE>
<PAGE>
PORTFOLIO OF INVESTMENTS - continued

<TABLE>
<CAPTION>
Bonds - continued
- -----------------------------------------------------------------------------------------------
                                                                Principal Amount
Issuer                                                             (000 Omitted)         Value
- -----------------------------------------------------------------------------------------------
<S>                                                          <C>        <C>        <C>         
U.S. Dollar Denominated - 35.2%
       U.S. Treasury Notes, 5.875s, 2005                                $  1,830   $ 1,871,175
       U.S. Treasury Bonds, 8.875s, 2017                                     555       743,348
- -----------------------------------------------------------------------------------------------
Total U.S. Dollar Denominated                                                      $ 2,614,523
- -----------------------------------------------------------------------------------------------
Total Bonds (Identified Cost, $6,003,272)                                          $ 6,152,693
- -----------------------------------------------------------------------------------------------

Call Options Purchased - 0.1%
- -----------------------------------------------------------------------------------------------
<CAPTION>
                                                                Principal Amount
                                                                    of Contracts
Description/Expiration Month/Strike Price                          (000 Omitted)
- -----------------------------------------------------------------------------------------------
<S>                                                          <C>        <C>        <C>         
Italian Lire/Deutsche Marks
   January/1085                                              ITL         211,575   $       205
Japanese Bonds
   March/107.489                                             JPY          12,950           914
   March/112.796                                                          14,000           569
   March/115.828                                                          55,000         1,170
Japanese Yen
   January/97.5                                                           78,357            63
Swedish Kronor/Deutsche Marks
   February/4.535                                            SEK           4,065         3,569
- -----------------------------------------------------------------------------------------------
Total Call Options Purchased (Premiums Paid, $19,447 )                             $     6,490
- -----------------------------------------------------------------------------------------------

Put Options Purchased - 0.1%
- -----------------------------------------------------------------------------------------------
Australian Dollars
   January/0.745                                             AUD             145   $     1,204
Deutsche Marks
   February/1.46                                             DEM             930         5,056
Deutsche Marks/British Pounds
   March/2.265                                                               657         2,988
- -----------------------------------------------------------------------------------------------
Total Put Options Purchased (Premiums Paid, $11,971)                               $     9,248
- -----------------------------------------------------------------------------------------------

Short-Term Obligations - 19.4%
- -----------------------------------------------------------------------------------------------
<CAPTION>
                                                                Principal Amount
Issuer                                                             (000 Omitted)
- -----------------------------------------------------------------------------------------------
<S>                                                                     <C>        <C>         
   Federal Home Loan Mortgage Corp., due1/02/96                           $  445   $   444,715
   Federal National Mortgage Assn., due 1/16/96                            1,000       996,049
- -----------------------------------------------------------------------------------------------
Total Short-Term Obligations, at Amortized Cost                                    $ 1,440,764
- -----------------------------------------------------------------------------------------------
Total Investments (Identified Cost, $7,475,454)                                    $ 7,609,195
- -----------------------------------------------------------------------------------------------
</TABLE>

Portfolio of Investments - continued

<TABLE>
<CAPTION>
Call Options Written - (0.2)%
- ----------------------------------------------------------------------------------------------
                                                                Principal Amount
                                                                    of Contracts
Description/Expiration Month/Strike Price                          (000 Omitted)        Value
- ----------------------------------------------------------------------------------------------
<S>                                                          <C>        <C>        <C>         
Deutsche Marks/British Pounds
   March/2.1476                                              DEM             623   $   (1,761)
Italian Lire/Deutsche Marks
   August/1125                                               ITL         596,334      (10,205)
- ----------------------------------------------------------------------------------------------
Total Call Options Written (Premiums Received, $12,652)                            $  (11,966)
- ----------------------------------------------------------------------------------------------

Put Options Written - (0.3)%
- ----------------------------------------------------------------------------------------------
Australian Dollars
   January/0.745                                             AUD             145   $   (1,204)
Italian Lire/Deutsche Marks
   August/1125                                               ITL         596,334      (18,111)
Japanese Bonds
   March/107.489                                             JPY          12,950       (2,305)
   March/112.796                                                          14,000       (3,414)
- ----------------------------------------------------------------------------------------------
Total Put Options Written (Premiums Received, $27,325)                             $  (25,034)
- ----------------------------------------------------------------------------------------------

Other Assets, Less Liabilities - (2.0)%                                            $ (148,554)
- ----------------------------------------------------------------------------------------------
- ----------------------------------------------------------------------------------------------
Net Assets - 100.0%                                                                $7,423,641
- ----------------------------------------------------------------------------------------------
</TABLE>

Abbreviations have been used throughout this report to indicate amounts shown in
currencies other than the U.S. dollar. A list of abbreviations is shown below.

AUD   =  Australian Dollars                       GBP   =  British Pounds
CAD   =  Canadian Dollars                         ITL   =  Italian Lire
CHF   =  Swiss Francs                             JPY   =  Japanese Yen
DEM   =  Deutsche Marks                           NLG   =  Dutch Guilder
DKK   =  Danish Kroner                            NZD   =  New Zealand Dollar
ESP   =  Spanish Pesetas                          SEK   =  Swedish Kronor
FIM   =  Finnish Markkaa
FRF   =  French Francs

See notes to financial statements
<PAGE>

FINANCIAL STATEMENTS

Statement of Assets and Liabilities
- -------------------------------------------------------------------------------
December 31, 1995
- -------------------------------------------------------------------------------
Assets:
   Investments, at value (identified cost, $7,475,454)            $   7,609,195
   Cash                                                                   3,897
   Net receivable for forward foreign currency exchange
      contracts sold                                                     57,499
   Receivable for Series shares sold                                     92,543
   Interest and dividends receivable                                    126,975
   Receivable from investment adviser                                    16,952
   Deferred organization expenses                                         3,808
   Other assets                                                              40
                                                                  -------------
         Total assets                                             $   7,910,909
                                                                  -------------
Liabilities:
   Payable for investments purchased                              $     102,727
   Payable for Series shares reacquired                                  37,402
   Written options outstanding, at value
      (premiums received, $39,977)                                       37,000
   Net payable for forward foreign currency exchange
      contracts purchased                                               288,827
   Payable to affiliates for management fee                                 456
   Accrued expenses and other liabilities                                20,856
                                                                  -------------
         Total liabilities                                        $     487,268
                                                                  -------------
Net assets                                                        $   7,423,641
                                                                  =============
Net assets consist of:
   Paid-in capital                                                $   7,513,625
   Unrealized depreciation on investments
      and translation of assets and liabilities
      in foreign currencies                                             (94,195)
   Accumulated undistributed net realized loss
      on investments and foreign currency transactions                 (162,554)
   Accumulated undistributed net investment income                      166,765
                                                                  -------------
         Total                                                    $   7,423,641
                                                                  =============
Shares of beneficial interest outstanding                               729,602
                                                                  =============
Net asset value, offering price and redemption
   price per share (net assets of $7,423,641 / 729,602
   shares of beneficial interest outstanding)                        $10.17
                                                                  =============

See notes to financial statements

<PAGE>

FINANCIAL STATEMENTS - continued

Statement of Operations
- ----------------------------------------------------------------------------
Year Ended December 31, 1995
- ----------------------------------------------------------------------------
Net investment income:
   Interest income                                                 $ 317,511
                                                                   ---------
   Expenses -
      Management fee                                               $  33,869
      Trustees' compensation                                           2,033
      Shareholder servicing agent fee                                  1,567
      Auditing fees                                                   34,511
      Custodian fee                                                   12,024
      Printing                                                         2,038
      Amortization of organization expenses                            1,504
      Legal fees                                                         525
      Miscellaneous                                                    1,541
                                                                   ---------
         Total expenses                                            $  89,612
      Reduction of expenses by investment adviser                    (43,311)
      Fees paid indirectly                                            (1,143)
                                                                   ---------
         Net expenses                                              $  45,158
                                                                   ---------
            Net investment income                                  $ 272,353
                                                                   ---------
Realized and unrealized gain (loss) on investments:
   Realized gain (identified cost basis) -
      Investment transactions                                      $ 310,315
      Written option transactions                                     31,740
      Foreign currency transactions                                   56,108
                                                                   ---------
         Net realized gain on investments and foreign
           currency transactions                                   $ 398,163
                                                                   ---------
   Change in unrealized appreciation (depreciation) -
      Investments                                                  $ 161,510
      Written options                                                 (1,818)
      Translation of assets and liabilities in foreign currencies   (239,823)
                                                                   ---------
         Net unrealized loss on investments and foreign currency   $ (80,131)
                                                                   ---------
            Net realized and unrealized gain on investments
              and foreign currency                                 $ 318,032
                                                                   ---------
               Increase in net assets from operations              $ 590,385
                                                                   =========

See notes to financial statements
<PAGE>

FINANCIAL STATEMENTS - continued

<TABLE>
<CAPTION>
Statement of Changes in Net Assets
- ------------------------------------------------------------------------------------------------------------
                                                                              Year Ended               Period
                                                                                                       Ended
                                                                        December 31, 1995   December 31,1994*
- ------------------------------------------------------------------------------------------------------------
<S>                                                                          <C>              <C>          
Increase (decrease) in net assets:                                                           
From operations -                                                                            
   Net investment income                                                     $    272,353     $      47,596
   Net realized gain (loss) on investments and                                               
      foreign currency transactions                                               398,163           (11,035)
   Net unrealized loss on investments and                                                    
      foreign currency translation                                                (80,131)          (14,064)
                                                                             -------------    --------------
      Increase in net assets from operations                                 $    590,385     $      22,497
                                                                             -------------    --------------
Distributions declared to shareholders -                                                     
   From net investment income                                                $   (272,353)    $     (47,596)
   In excess of net investment income                                            (357,618)          (26,056)
                                                                             -------------    --------------
   Tax return of capital                                                          (63,028)                -
                                                                             -------------    --------------
      Total distributions declared to shareholders                           $   (692,999)    $     (73,652)
                                                                             -------------    --------------
Series share (principal) transactions -                                                      
   Net proceeds from sale of shares                                          $  9,272,850     $   3,259,477
   Net asset value of shares issued to shareholders                                          
      in reinvestment of distributions                                            692,995            73,652
   Cost of shares reacquired                                                   (5,320,839)         (409,225)
                                                                             -------------    --------------
         Increase in net assets from Series share transactions               $  4,645,006     $   2,923,904
                                                                             -------------    --------------
            Total increase in net assets                                     $  4,542,392     $   2,872,749
Net assets:                                                                                  
   At beginning of period                                                       2,881,249             8,500
                                                                             -------------    --------------
   At end of period (including accumulated distributions in 
      excess of net investment income of $166,765
      and $10,012, respectively).                                            $  7,423,641     $   2,881,249
                                                                             ============     =============
                                                                                            
<FN>
*For the period from the commencement of investment operations, June 14, 1994 to December 31, 1994.
</TABLE>

See notes to financial statements
<PAGE>

FINANCIAL STATEMENTS - continued

<TABLE>
<CAPTION>
Financial Highlights
- ----------------------------------------------------------------------------------------------------------
                                                                             Year Ended       Period Ended
                                                                       December 31, 1995 December 31, 1994*
- ----------------------------------------------------------------------------------------------------------
<S>                                                                          <C>              <C>          
Per share data (for a share outstanding throughout each period):
Net asset value - beginning of period                                         $     9.82      $     10.00
                                                                              ----------      -----------
Income from investment operations # -
   Net investment incomess.                                                   $     0.63      $      0.17
   Net realized and unrealized gain (loss) on investments
      and foreign currency transactions                                             0.78            (0.09)
                                                                              ----------      -----------
      Total from investment operations                                        $     1.41      $      0.08
                                                                              ----------      -----------
Less distributions declared to shareholders -
   From net investment income                                                 $    (0.42)     $     (0.17)
   In excess of net investment income                                              (0.54)           (0.09)
   Tax return of capital                                                           (0.10)               -
                                                                              ----------      -----------
      Total distributions declared to shareholders                            $    (1.06)     $     (0.26)
                                                                              ----------      -----------
Net asset value - end of period                                               $    10.17      $      9.82
                                                                              ==========      ===========
Total return                                                                      14.38%            0.79%++
Ratios (to average net assets)/Supplemental data{S}:
   Expenses##                                                                      1.00%            1.00%+
   Net investment income                                                           6.05%            4.68%+
Portfolio turnover                                                                  211%              62%
Net assets at end of period (000 omitted)                                     $    7,424      $     2,881

<FN>
*   For the period from the commencement of investment operations, June 14, 1994 to December 31, 1994.
+   Annualized.
++  Not annualized.
#   Per share data is based on average shares outstanding.
##  For fiscal years after September 1, 1995, the Series' expenses are calculated without reduction for fees paid indirectly.
{S} The adviser voluntarily agreed to maintain the expenses of the Series at not more than 1.00% of average daily net assets.
    To the extent actual expenses  were over these limitations, the net investment income per share and the ratios would have been:

         Net investment income                                                $     0.53      $      0.16
         Ratios (to average net assets):
            Expenses                                                               1.99%            1.10%+
            Net investment income                                                  5.09%            4.58%+

</TABLE>

See notes to financial statements
<PAGE>

NOTES TO FINANCIAL STATEMENTS

(1) Business and Organization
MFS World Governments Series (the Series) is a non-diversified series of MFS
Variable Insurance Trust (the Trust) which is comprised of the following twelve
series: MFS Bond Series, MFS Emerging Growth Series, MFS Growth Series, MFS
Growth with Income Series, MFS High Income Series, MFS Limited Maturity Series,
MFS Money Market Series, MFS Research Series, MFS Strategic Fixed Income Series,
MFS Total Return Series, MFS Utilities Series and MFS World Governments Series.
The Trust is organized as a Massachusetts business trust and is registered under
the Investment Company Act of 1940, as amended, as an open-end management
investment company.

The shareholders of each Series of the Trust are separate accounts of insurance
companies which offer variable annuity and/or life insurance products. As of
December 31, 1995 there were fourteen shareholders in the Series.

(2) Significant Accounting Policies
Investment Valuations - Debt securities (other than short-term obligations which
mature in 60 days or less), including listed issues and forward contracts, are
valued on the basis of valuations furnished by dealers or by a pricing service
with consideration to factors such as institutional-size trading in similar
groups of securities, yield, quality, coupon rate, maturity, type of issue,
trading characteristics and other market data, without exclusive reliance upon
exchange or over-the-counter prices. Short-term obligations, which mature in 60
days or less, are valued at amortized cost, which approximates market value.
Futures contracts, options and options on futures contracts listed on
commodities exchanges are valued at closing settlement prices. Over-the-counter
options are valued by brokers through the use of a pricing model which takes
into account closing bond valuations, implied volatility and short-term
repurchase rates. Securities for which there are no such quotations or
valuations are valued at fair value as determined in good faith by or at the
direction of the Trustees.

Repurchase Agreements - The Series may enter into repurchase agreements with
institutions that the Series' investment adviser has determined are
creditworthy. Each repurchase agreement is recorded at cost. The Series requires
that the securities purchased in a repurchase transaction be transferred to the
custodian in a manner sufficient to enable the Series to obtain those securities
in the event of a default under the repurchase agreement. The Series monitors,
on a daily basis, the value of the securities transferred to ensure that the
value, including accrued interest, of the securities under each repurchase
agreement is greater than amounts owed to the Series under each such repurchase
agreement.

Foreign Currency Translation - Investment valuations, other assets, and
liabilities initially expressed in foreign currencies are converted each
business day into U.S. dollars based upon current exchange rates. Purchases and
sales of foreign investments, income and expenses are converted into U.S.
dollars based upon currency exchange rates prevailing on the respective dates of
such transactions. Gains and losses attributable to foreign currency exchange
rates on sales of securities are recorded for financial statement purposes as
net realized gains and losses on investments. Gains and losses attributable to
foreign exchange rate movements on income and expenses are recorded for
financial statement purposes as foreign currency transaction gains and losses.
That portion of both realized and unrealized gains and losses on investments
that results from fluctuations in foreign currency exchange rates is not
separately disclosed.

Deferred Organization Expenses - Costs incurred by the Series in connection with
its organization have been deferred and are being amortized on a straight-line
basis over a five-year period beginning on the date of commencement of
investment operations of the Series.

Written Options - The Series may write covered call or put options for which
premiums are received and are recorded as liabilities, and are subsequently
adjusted to the current value of the options written. Premiums received from
writing options which expire are treated as realized gains. Premiums received
from writing options which are exercised or are closed are offset against the
proceeds or amount paid on the transaction to determine the realized gain or
loss. If a put option is exercised, the premium reduces the cost basis of the
security purchased by the Series. The Series, as writer of an option, may have
no control over whether the underlying securities may be sold (call) or
purchased (put) and, as a result, bears the market risk of an unfavorable change
in the price of the securities underlying the written option. In general,
written call options may serve as a partial hedge against decreases in value in
the underlying securities to the extent of the premium received. Written options
may also be used as a part of an income producing strategy reflecting the view
of the Series' management on the direction of interest rates.

Forward Foreign Currency Exchange Contracts - The Series may enter into forward
foreign currency exchange contracts for the purchase or sale of a specific
foreign currency at a fixed price on a future date. Risks may arise upon
entering these contracts from the potential inability of counterparties to meet
the terms of their contracts and from unanticipated movements in the value of a
foreign currency relative to the U.S. dollar. The Series will enter into forward
contracts for hedging purposes as well as for non-hedging purposes. For hedging
purposes, the Series may enter into contracts to deliver or receive foreign
currency it will receive from or require for its normal investment activities.
It may also use contracts in a manner intended to protect foreign
currency-denominated securities from declines in value due to unfavorable
exchange rate movements. For non-hedging purposes, the Series may enter into
contracts with the intent of changing the relative exposure of the Series'
portfolio of securities to different currencies to take advantage of anticipated
changes. The forward foreign currency exchange contracts are adjusted by the
daily exchange rate of the underlying currency and any gains or losses are
recorded for financial statement purposes as unrealized until the contract
settlement date.

Investment Transactions and Income - Investment transactions are recorded on the
trade date. Interest income is recorded on the accrual basis. All premium and
original issue discount are amortized or accreted for financial statement and
tax reporting purposes as required by federal income tax regulations. Interest
payments received in additional securities are recorded on the ex-interest date
in an amount equal to the value of the security on such date.

Fees Paid Indirectly - The Series' custodian bank calculates its fee based on
the Series' average daily net assets. This fee is reduced according to an
expense offset arrangement with State Street Bank and Trust Company, the Trust's
dividend disbursing agent, which provides for partial reimbursement of custody
fees based on a formula developed to measure the value of cash deposited by the
Series with the custodian and with the dividend disbursing agent. This amount is
shown as a reduction of expenses on the Statement of Operations.

Tax Matters and Distributions - The Series' policy is to comply with the
provisions of the Internal Revenue Code (the Code) applicable to regulated
investment companies and to distribute to shareholders all of its taxable
income, including any net realized gain on investments. Accordingly, no
provision for federal income or excise tax is provided. The Series files a tax
return annually using tax accounting methods required under provisions of the
Code which may differ from generally accepted accounting principles, the basis
on which these financial statements are prepared. Accordingly, the amount of net
investment income and net realized gain reported on these financial statements
may differ from that reported on the Series' tax return. Distributions to
shareholders are recorded on the ex-dividend date.

The Series distinguishes between distributions on a tax basis and a financial
reporting basis and requires that only distributions in excess of tax basis
earnings and profits are reported in the financial statements as a return of
capital. Differences in the recognition or classification of income between the
financial statements and tax earnings and profits which result in temporary
over-distributions for financial statement purposes, are classified as
distributions in excess of net investment income or accumulated net realized
gains. During the year ended December 31, 1995, $597,423 was reclassified from
accumulated undistributed net investment income to accumulated net realized loss
on investments and foreign currency transactions ($533,638) and paid-in capital
($63,785), due to differences between book and tax accounting for currency
transactions. This change had no effect on the net assets or net asset value per
share. At December 31, 1995, accumulated undistributed net investment income and
realized loss on investments and foreign currency transactions under book
accounting were different from tax accounting due to temporary differences in
accounting for foreign currencies and capital losses not recognized for tax
purposes.

At December 31, 1995, the Series, for federal income tax purposes, had a capital
loss carryforward of $105,923, which may be applied against any net taxable
realized gains of each succeeding year until the earlier of its utilization or
expiration on December 31, 2003.

(3) Transactions with Affiliates
Investment Adviser - The Series has an investment advisory agreement with
Massachusetts Financial Services Company (MFS) to provide overall investment
advisory and administrative services, and general office facilities. The
management fee is computed daily and paid monthly at an effective annual rate of
0.75% of its average daily net assets. Under a temporary expense reimbursement
agreement with MFS, MFS has voluntarily agreed to limit the operating expenses
of the Series at levels which increase over time. Currently MFS has agreed to
limit the Series' expenses at an effective annual rate of 1.00% of its average
daily net assets. MFS will pay all Series' expenses in excess of the current
limit subject to reimbursement by the Series at a later date. To the extent that
actual Series' expenses do not reach the limit, the Series will reimburse MFS
for prior expenses paid by MFS on behalf of the Series such that the Series'
expense ratio does not exceed 1.00% of its average daily net assets. At December
31, 1995, the aggregate unreimbursed expenses owed to MFS by the Series amounted
to $79,784.

The Series pays no compensation directly to its Trustees who are officers of the
investment adviser, or to officers of the Series, all of whom receive
remuneration for their services to the Series from MFS. Certain of the officers
and Trustees of the Series are officers or directors of MFS and MFS Service
Center, Inc. (MFSC).

Shareholder Servicing Agent - MFSC, a wholly owned subsidiary of MFS, earns a
fee for its services as shareholder servicing agent. The fee is calculated as a
percentage of the average daily net assets at an effective annual rate of up to
0.035%.

(4) Portfolio Securities
Purchases and sales of investments, other than purchased option transactions and
short-term obligations, were as follows:

                                                    Purchases            Sales
- ------------------------------------------------------------------------------
   U.S. government securities                      $ 6,349,834    $ 4,091,391
                                                   ===========    ===========
   Investments (non-U.S. government securities)    $ 7,317,761    $ 5,412,687
                                                   ===========    ===========

The cost and unrealized appreciation or depreciation in value of the investments
owned by the Series, as computed on a federal income tax basis, are as follows:

   Aggregate cost                                                 $ 7,475,454
                                                                  ===========
   Gross unrealized appreciation                                  $   154,358
   Gross unrealized depreciation                                      (20,617)
                                                                  -----------
      Net unrealized appreciation                                 $   133,741
                                                                  ===========

(5) Shares of Beneficial Interest
The Trust's Declaration of Trust permits the Trustees to issue an unlimited
number of full and fractional shares of beneficial interest (without par value).
Transactions in Series shares were as follows:

<TABLE>
<CAPTION>
                                                Year Ended                        Period Ended
                                             December 31, 1995                 December 31, 1994*
- -----------------------------------------------------------------------------------------------------------
                                         Shares            Amount           Shares            Amount
- -----------------------------------------------------------------------------------------------------------
<S>                                       <C>          <C>                   <C>          <C>          
Shares sold                               861,022      $   9,272,850         325,790      $   3,259,477
Shares issued to shareholders in
  reinvestment of distributions            68,274            692,995           7,470             73,652
Shares reacquired                        (493,000)        (5,320,839)        (40,804)          (409,225)
                                       ----------      -------------      ----------      ------------- 
    Net increase                          436,296      $   4,645,006         292,456      $   2,923,904
                                       ==========      =============      ==========      =============

<FN>
*For the period from commencement of investment operations, June 14, 1994 to December 31, 1994.
</TABLE>

(6) Line of Credit
The Series entered into an agreement which enables it to participate with other
funds managed by MFS in an unsecured line of credit with a bank which permits
borrowings up to $350 million, collectively. Borrowings may be made to
temporarily finance the repurchase of Series shares. Interest is charged to each
fund, based on its borrowings, at a rate equal to the bank's base rate. In
addition, a commitment fee, based on the average daily unused portion of the
line of credit, is allocated among the participating funds at the end of each
quarter.

(7) Financial Instruments
The Series trades financial instruments with off-balance sheet risk in the
normal course of its investing activities in order to manage exposure to market
risks such as interest rates and foreign currency exchange rates. These
financial instruments include written options and forward foreign currency
exchange contracts. The notional or contractual amounts of these instruments
represent the investment the Series has in particular classes of financial
instruments and does not necessarily represent the amounts potentially subject
to risk. The measurement of the risks associated with these instruments is
meaningful only when all related and offsetting transactions are considered.

<TABLE>
<CAPTION>
Written Option Transactions
                                          1995 Calls                         1995 Puts
- --------------------------------------------------------------------------------------------------------
                                       Principal Amounts                 Principal Amounts
                                         of Contracts                      of Contracts
                                         (000 Omitted)       Premiums      (000 Omitted)     Premiums
- ---------------------------------------------------------------------------------------------------------
<S>                                        <C>            <C>                <C>           <C>
Outstanding, beginning of period -
   Canadian Dollars                                 -     $           -              68    $         353
   Deutsche Marks                                   -                 -           1,165            8,916
   Japanese Yen                                 5,000               673          10,000            1,075
   Swiss Francs/Deutsche Marks                    119               501               -                -
Options written -
   Australian Dollars                             496             4,570             713            8,042
   British Pounds                                 146             2,515             136            2,515
   Canadian Dollars                               326               683             440            1,795
   Deutsche Marks                               3,954            14,118           3,488           20,743
   Deutsche Marks/British Pounds                1,102             5,851               -                -
   Italian Lire/Deutsche Marks              1,288,090            14,087       1,015,224           26,908
   Japanese Yen                               196,688            46,451         646,130           69,934
   Japanese Yen/Deutsche Marks                      -                 -         106,983            3,814
   Spanish Peseta/Deutsche Marks                    -                 -          12,676              831
   Swedish Kronor/Deutsche Marks                1,469               949               -                -

Options terminated in closing transactions -
   Australian Dollars                            (496)    $      (4,570)           (568)   $      (6,189)
   British Pounds                                (146)           (2,515)           (136)          (2,515)
   Canadian Dollars                              (326)             (683)           (508)          (2,148)
   Deutsche Marks                                (509)           (2,526)         (4,195)         (27,987)
   Deutsche Marks/British Pounds                 (479)           (3,082)              -                -
   Italian Lire/Deutsche Marks                      -                 -        (124,895)            (952)
   Japanese Yen                              (166,782)          (44,179)       (607,186)         (66,445)
   Japanese Yen/Deutsche Marks                      -                 -        (106,983)          (3,814)
   Spanish Peseta/Deutsche Marks                    -                 -         (12,676)            (831)
   Swedish Kronor/Deutsche Marks               (1,469)             (949)              -                -
Options exercised -
   Deutsche Marks                                (293)             (935)              -                -
   Italian Lire/Deutsche Marks                      -                 -        (293,995)          (3,998)
   Swish Francs/Deutsche Marks                   (119)             (501)              -                -
Options expired -
   Deutsche Marks                              (3,152)          (10,657)           (458)          (1,672)
   Italian Lire/Deutsche Marks               (691,756)           (4,204)              -                -
   Japanese Yen                               (34,906)           (2,945)        (21,994)          (1,050)
                                         ------------     -------------    ------------    -------------
Outstanding, end of period                    596,957     $      12,652         623,429    $      27,325
                                         ============     =============    ============    =============
Options outstanding at end of period consist of:
   Australian Dollars                               -     $           -             145    $       1,853
   Deutsche Marks/British Pounds                  623             2,769               -                -
   Italian Lire/Deutsche Marks                596,334             9,883         596,334           21,958
   Japanese Yen                                     -                 -          26,950            3,514
                                         ------------     -------------    ------------    -------------
Outstanding, end of period                    596,957     $      12,652         623,429    $      27,325
                                         ============     =============    ============    =============

At December 31, 1995, the Series had sufficient cash and/or securities at least equal to the value of the written options.
</TABLE>

<TABLE>
<CAPTION>
Forward Foreign Currency Exchange Contracts
                                                                                                Net Unrealized
                 Settlement                    Contracts        In Exchange      Contracts at   Appreciation/
                    Date                       to Deliver           for             Value      (Depreciation)
- -------------------------------------------------------------------------------------------------------------
<S>            <C>                    <C>          <C>         <C>             <C>             <C>
Sales          1/08/96 to 3/18/96     AUD          1,694,743   $   1,251,613   $    1,255,075  $      (3,462)
               1/30/96 to 2/29/96     CAD            894,750         655,096          655,697           (601)
                          5/31/96     CHF            697,930         615,893          614,442          1,451
               1/16/96 to 5/31/96     DEM         12,907,440       9,047,430        9,005,679         41,751
                          4/12/96     DKK          2,789,214         506,926          502,916          4,010
                          1/08/96     ESP         82,713,162         669,911          679,387         (9,476)
                          2/29/96     FIM            366,619          84,670           84,436            234
               1/12/96 to 4/12/96     FRF          4,533,648         910,796          925,154        (14,358)
                          1/30/96     GBP            304,693         470,258          472,651         (2,393)
                          3/07/96     ITL      1,404,142,267         870,799          876,888         (6,089)
               2/23/96 to 6/07/96     JPY        229,822,212       2,314,176        2,268,144         46,032
                          1/22/96     NLG            488,784         307,694          304,621          3,073
                          1/12/96     NZD            290,992         188,280          189,729         (1,449)
                          2/29/96     SEK          6,482,063         969,712          970,936         (1,224)
                                                               -------------   --------------  ------------- 
                                                               $  18,863,254   $   18,805,755  $      57,499
                                                               =============   ==============  =============

Purchases      1/08/96 to 3/18/96     AUD          1,207,354   $     899,672   $      894,706  $      (4,966)
               1/30/96 to 2/26/96     CAD            712,522         520,896          522,158          1,262
                          1/16/96     CHF            324,034         277,557          281,343          3,786
               1/16/96 to 5/31/96     DEM         15,173,820      10,797,516       10,590,205       (207,311)
               2/29/96 to 4/12/96     DKK          4,302,800         784,833          775,350         (9,483)
                          2/29/96     FIM            366,619          87,419           84,436         (2,983)
                          5/31/96     FRF          3,468,579         706,959          708,684          1,725
               1/03/96 to 5/31/96     ITL      1,327,689,121         823,103          828,076          4,973
               2/23/96 to 6/07/96     JPY        295,421,882       2,965,952        2,893,659        (72,293)
                          1/22/96     NLG             42,828          26,533           26,691            158
                          3/18/96     NZD            540,269         350,803          350,337           (466)
               2/29/96 to 3/21/96     SEK          7,258,868       1,090,324        1,087,095         (3,229)
                                                               -------------   --------------  ------------- 
                                                               $  19,331,567   $   19,042,740  $    (288,827)
                                                               =============   ==============  ============= 
</TABLE>


At December 31, 1995, the Series had sufficient cash and/or securities to cover
any commitments under these contracts.


<PAGE>
INDEPENDENT AUDITORS' REPORT

To the Trustees of MFS Variable Insurance Trust and Shareholders of MFS World
Governments Series:

We have audited the accompanying statement of assets and liabilities, including
the portfolio of investments, of MFS World Governments Series (the Series) (one
of the series constituting the MFS Variable Insurance Trust) as of December 31,
1995, the related statement of operations for the year then ended and the
statement of changes in net assets and the financial highlights for the year
then ended and the period from June 14, 1994 (the commencement of investment
operations) to December 31, 1995. These financial statements and financial
highlights are the responsibility of the Series' management. Our responsibility
is to express an opinion on these financial statements and financial highlights
based on our audits.

We conducted our audits 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 and financial
highlights are free of material misstatement. An audit includes examining, on a
test basis, evidence supporting the amounts and disclosures in the financial
statements. Our procedures included confirmation of the securities owned at
December 31, 1995 by correspondence with the custodian; where replies were not
received from brokers, we performed other auditing procedures. 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 audits provide a reasonable basis for our
opinion.

In our opinion, such financial statements and financial highlights present
fairly, in all material respects, the financial position of MFS World
Governments Series at December 31, 1995, the results of its operations, the
changes in its net assets and its financial highlights for the respective stated
periods in conformity with generally accepted accounting principles.


DELOITTE & TOUCHE LLP

Boston, Massachusetts
February 2, 1996


- -----------------------------------------------------------------------------
This report is prepared for the general information of shareholders. It is
authorized for distribution to prospective investors only when preceded or
accompanied by a current prospectus.

                                                                VWG-2-2/96/9M




<PAGE>

[logo] MFS(R)                                                Annual Report for
       THE FIRST NAME IN MUTUAL FUNDS                               Year Ended
                                                             December 31, 1995

MFS(R) BOND SERIES
A Series of MFS(R) Variable Insurance Trust

[Picture of two men in front of a window]

<PAGE>
MFS(R) BOND SERIES

A SERIES OF MFS(R)  VARIABLE INSURANCE TRUST

TRUSTEES
A. Keith Brodkin*
Chairman and President

Nelson J. Darling, Jr.
Trustee, Eastern Enterprises
(diversified holding company)

William R. Gutow
Vice Chairman,
Capitol Entertainment
(Blockbuster Video Franchise)

PORTFOLIO MANAGER
Geoffrey L. Kurinsky*

TREASURER
W. Thomas London*

ASSISTANT TREASURER
James O. Yost*

SECRETARY
Stephen E. Cavan*

ASSISTANT SECRETARY
James R. Bordewick, Jr.*

*Affiliated with the Investment Adviser

INVESTMENT ADVISER
Massachusetts Financial Services Company
500 Boylston Street
Boston, MA 02116-3741

DISTRIBUTOR
MFS Fund Distributors, Inc.
500 Boylston Street
Boston, MA 02116-3741

SHAREHOLDER SERVICE CENTER
MFS Service Center, Inc.
P.O. Box 1400
Boston, MA 02107-9906

For additional information, contact your financial adviser.

CUSTODIAN
Investors Bank & Trust Company

AUDITORS
Deloitte & Touche LLP

<PAGE>

Dear Contract Owner:

An environment of declining interest rates and a favorable outlook for inflation
helped establish a pattern of positive performance in both fixed-income and
equity markets around the world during the past 12 months. Yields on many
fixed-income securities continued to decline throughout the year, and as bond
prices rose in response to these declines, all of the fixed-income investments
in the Trust experienced positive total returns. At the same time, lower
interest rates and strong corporate earnings reports through most of the year
helped the prices of many stocks to rise over the period, producing strong
returns.

U.S. Outlook

Moderate but sustainable growth was the hallmark of the economic expansion's
fifth year, although some signs of sluggishness were evident late in the year.
Recent retail sales, for example, have been disappointing, in part because of
rising levels of consumer debt. In addition, growth is not expected to get much
help from the manufacturing sector as order flows from manufacturers have
moderated. Export activity, meanwhile, is also expected to remain modest as
continued weakness abroad limits demand for many U.S. goods. However, the
Federal Reserve Board's consistent and, so far, successful efforts to fight
inflation seem to be giving consumers and businesses enough longer-term
confidence to help maintain modest growth in real (adjusted for inflation) gross
domestic product into 1996.

Global Outlook

A pattern of slow to moderate growth and low and controlled inflation remains a
dominant theme in major industrialized countries, including the United States.
While the recent recovery of the dollar against the German mark and the Japanese
yen has added some strength to the economies of Europe and Japan, the outlook is
for sluggish economic growth, in the near term at least. And although moves by
central banks in Germany and Japan to lower interest rates have helped stimulate
domestic demand, many industrial companies in these countries are still
struggling to compete in a global marketplace in which the prices of their
products are less competitively priced. On the positive side, this does mean
little to no inflationary pressure in these countries, and we believe that this,
combined with further reductions in interest rates, could help provide a
foundation for stronger economic growth in the long run. Also, we believe that
many of the cost-cutting measures taken by companies in these countries over the
past few years will ultimately provide earnings leverage when economic growth
improves. Inflation in most overseas economies remains in a downward trend,
providing fixed-income investors with opportunities for relatively attractive
real rates of interest, possibly accompanied by moderate price appreciation.
While the dollar continues to represent a sound store of long-term value, its
relative strength in the near term is being restrained by the persistent U.S.
current-account deficit.

Bond Markets

Given the recent signs of economic weakness, prospects for the Federal Reserve
Board's further decreasing short-term interest rates are good. Long-term rates,
meanwhile, moved noticeably downward in the latter months of 1995 in
anticipation of more modest fourth-quarter growth with continued low inflation.
While there were some increases in commodity prices early in the year, companies
found it difficult to pass these on at the consumer level as they continue to
fight for market share. Additionally, unit labor costs remain under control and
seem to be growing at a pace that is near or below the ongoing inflation rate.
Thus, with long-term U.S. government bonds yielding approximately 6% in an
environment of 2% to 3% inflation, real rates of return in the fixed-income
markets remain relatively attractive.

In world bond markets, slowing economic growth, low inflation, and declining
official interest rates helped result in solid performance during the past 12
months. European governments are engaged in multi-year programs to reduce their
budget deficits and debt levels. These programs are positive for bonds in that
lower government spending tends to reduce inflationary pressures and lower
issuance of government debt reduces supply pressures on the bond market. In the
Japanese market, powerful deflationary forces have supported a drop in yields to
historically low levels. We now feel this process may be drawing to an end,
given a reversal of priorities at the central bank from fighting inflation,
which is now non-existent, to offsetting the downward spiral of deflation. The
high returns of the U.S. bond market, as measured by the Lehman Brothers
Government Bond Index, have been echoed in other U.S. dollar-bloc markets,
including Australia, New Zealand, and Canada, all of which saw positive
performance over the past year according to Salomon Brothers. Currently, the
Australian market offers significantly higher yields than the U.S. market, and,
we believe, represents good value. As long as the outlook for U.S. bonds remains
positive, these related markets could outperform the U.S. market.

Comments from the portfolio manager of this Series are presented on the
following page. We appreciate your support and welcome any questions or comments
you may have.

Respectfully,

/s/ A. Keith Brodkin                          /s/ Geoffrey L. Kurinsky

    A. Keith Brodkin                              Geoffrey L. Kurinsky
    Chairman and President                        Portfolio Manager

January 12, 1996

<PAGE>

MFS(R) BOND SERIES

The Bond Series commenced investment operations on October 24, 1995, and
provided a total return of +3.02% from that date through December 31, 1995. This
compares to a +3.14% return for the unmanaged Lehman Brothers
Government/Corporate Bond Index.*

Based on our constructive outlook for U.S. interest rates, we have deployed the
initial allocation of assets in the Series into the longer end of the market.
The duration of the Series ended the year at six years, roughly 20% longer than
what is considered a normal interest-rate sensitivity.

In terms of structure, we have been able to deploy 34% of assets into the
investment-grade corporate market and 8% into the high-yield bond market. The
balance is comprised of 41% in U.S. Treasuries and 17% in cash. Our target
structure, which we will continue to work toward, is 50% in investment-grade
corporate bonds, and 15% in the high-yield corporate market, with the remaining
35% being deployed in the U.S. Government mortgage markets. Given our view that
credit quality trends will continue to improve in 1996, we continue to emphasize
holdings in the corporate bond market.

PORTFOLIO MANAGER PROFILE

Geoffrey Kurinsky began his career at MFS in 1987 in the Fixed Income
Department. A graduate of the University of Massachusetts and Boston
University's Graduate School of Management, he was named Assistant Vice
President in 1988, Vice President in 1989 and Senior Vice President in 1993. Mr.
Kurinsky has managed the MFS Bond Series since its inception in October 1995.

PERFORMANCE SUMMARY

The information below illustrates the performance of the MFS Bond Series shares
in comparison to a market indicator.

AGGREGATE TOTAL RETURNS                                   10/24/95* -
                                                          12/31/95
- ----------------------------------------------------------------------
MFS Bond Series                                             +3.02%
- ----------------------------------------------------------------------
Lehman Brothers Government/Corporate Bond Index+(1)         +3.14%
- ----------------------------------------------------------------------

All results are historical and, therefore, are not an indication of future
results. The investment return and principal value of an investment in the
product will vary with changes in market conditions, and shares, when redeemed,
may be worth more or less than their original cost. All Series results reflect
the applicable expense subsidy which is explained in the Notes to Financial
Statements. Had the subsidy not been in effect, the results would have been less
favorable. All Series results do not reflect expenses that would be imposed by
insurance company separate accounts.

  * Commencement of investment operations; benchmark comparisons are from
    October 31, 1995.
  + The Lehman Brothers Government/Corporate Bond Index is an unmanaged,
    market-value weighted index of all debt obligations of the U.S. Treasury and
    U.S. Government Agencies (excluding mortgage-backed securities) and of all
    publicly issued fixed-rate, non-convertible, investment grade domestic
    corporate debt. It is not possible to invest in an index.
(1) Source: Lipper Analytical Services, Inc.
<PAGE>

PORTFOLIO OF INVESTMENTS - December 31, 1995

Bonds - 87.7%

- ----------------------------------------------------------------------------
                                            Principal Amount
Issuer                                      (000 Omitted)         Value
- ----------------------------------------------------------------------------
 Financial Institutions - 11.5%
    Banks and Credit Companies - 4.5%
    Bankers Trust N.Y., 7.5s, 2015                   $    10     $   10,200
- ----------------------------------------------------------------------------
    Insurance - 2.5%
    Travelers Group, Inc., 7.875s, 2025              $     5     $    5,597
- ----------------------------------------------------------------------------
    Other - 4.5%
    Associates Corp., 6.375s, 2005                   $    10     $   10,183
- ----------------------------------------------------------------------------
 Industrials - 27.1%
    Aerospace - 2.5%
    Loral Corp., 8.375s, 2024                        $     5     $    5,742
- ----------------------------------------------------------------------------
    Forest & Paper Products - 2.2%
    Noranda Forest Inc., 6.875s, 2005                $     5     $    5,115
- ----------------------------------------------------------------------------
    Oils - 2.2%
    Tenneco, Inc., 6.5s, 2005                        $     5     $    4,974
- ----------------------------------------------------------------------------
    Publishing - 2.2%
    News America Holdings, Inc., 7.75s, 2045         $     5     $    4,987
- ----------------------------------------------------------------------------
    Special Services and Products - 4.4%
    Fisher Scientific International, 7.125s, 2005    $     5     $    4,991
    ITT Corp., 6.75s, 2005                                 5          5,021
                                                                 -----------
                                                                 $   10,012
- ----------------------------------------------------------------------------
    Telecommunications - 2.2%
    Lenfest Communications, 8.375s, 2005             $     5     $    5,019
- ----------------------------------------------------------------------------
    Utilities - Electric - 6.8%
    Coastal Corp., 7.75s, 2035                       $    10     $   10,382
    Long Island Lighting Co., 8.9s, 2019                   5          5,048
                                                                 -----------
                                                                 $   15,430
- ----------------------------------------------------------------------------
    Utilities - Gas - 4.6%
    Southern Union Co., 7.6s, 2024                   $    10     $   10,419
- ----------------------------------------------------------------------------
Transportation - 5.3%
    Delta Air Lines, Inc., 9.75s, 2021               $     5     $    6,169
    United Air Lines, Inc., 9.75s, 2021                    5          5,998
                                                                 -----------
                                                                 $   12,167
- ----------------------------------------------------------------------------
U.S. Government Obligations - 43.8%
    U. S. Treasury Notes, 7.5s, 2002                 $    90     $   99,787
- ----------------------------------------------------------------------------
Total Bonds (Identified Cost, $195,739)                          $  199,632
- ----------------------------------------------------------------------------
 Other Assets, Less Liabilities - 12.3%                          $   28,303
- ----------------------------------------------------------------------------
Net Assets - 100.0%                                              $  227,935
- ----------------------------------------------------------------------------

See notes to financial statements

<PAGE>


FINANCIAL STATEMENTS

Statement of Assets and Liabilities
- -----------------------------------------------------------------------------
December 31, 1995
- -----------------------------------------------------------------------------
Assets:
   Investments, at value (identified cost, $195,739)                $199,632
   Cash                                                               36,949
   Interest receivable                                                 2,228
   Receivable from investment adviser                                  5,415
   Deferred organization expenses                                      8,851
                                                                    --------
         Total assets                                               $253,075
                                                                    --------
Liabilities:
   Payable for investments purchased                                $ 11,810
   Payable to affiliates for management fee                               11
   Accrued expenses and other liabilities                             13,319
                                                                    --------
         Total liabilities                                          $ 25,140
                                                                    --------
Net assets                                                          $227,935
                                                                    ========
Net assets consist of:
   Paid-in capital                                                  $223,852
   Unrealized appreciation on investments                              3,893
   Accumulated undistributed net realized gain on investments            190
                                                                    --------
         Total                                                      $227,935
                                                                    ========
Shares of beneficial interest outstanding                             22,360
                                                                    ========
Net asset value, offering price and redemption price per share
   (net assets of $227,935 / 22,360 shares
   of beneficial interest outstanding)                               $10.19
                                                                    ========

See notes to financial statements


<PAGE>


FINANCIAL STATEMENTS - continued

Statement of Operations
- -----------------------------------------------------------------------
Period Ended December 31, 1995*
- -----------------------------------------------------------------------
Net investment income:
   Interest income                                            $  2,423
                                                              --------
   Expenses -
     Management fee                                           $    247
     Trustees' compensation                                        508
     Shareholder servicing agent fee                                14
     Auditing fees                                              10,507
     Printing                                                    4,032
     Legal fees                                                  2,182
     Amortization of organization expenses                         337
     Custodian fee                                                  10
     Miscellaneous                                                 198
                                                              --------
         Total expenses                                       $ 18,035
     Reduction of expenses by investment adviser               (17,623)
                                                              --------
         Net expenses                                         $    412
                                                              --------
           Net investment income                              $  2,011
                                                              --------
Realized and unrealized gain on investments:
   Realized gain on investment transactions 
    (identified cost basis)                                   $    643
   Change in unrealized appreciation on investments              3,893
                                                              --------
     Net realized and unrealized gain on investments          $  4,536
                                                              --------
       Increase in net assets from operations                 $  6,547
                                                              ========

*For the period from the commencement of investment operations, October 24, 1995
to December 31, 1995.

See notes to financial statements
<PAGE>


FINANCIAL STATEMENTS - continued

Statement of Changes in Net Assets
- ---------------------------------------------------------------------------
Period Ended December 31, 1995*
- ---------------------------------------------------------------------------
Increase (decrease) in net assets:
From operations -
   Net investment income                                          $  2,011
   Net realized gain on investments                                    643
   Net unrealized gain on investments                                3,893
                                                                  ---------
     Increase in net assets from operations                       $  6,547
                                                                  ---------
Distributions declared to shareholders -
   From net investment income                                     $ (2,011)
   From net realized gain on investments                              (453)
                                                                  ---------
   Total distributions declared to shareholders                   $ (2,464)
                                                                  ---------
Series share (principal) transactions -
   Net proceeds from sale of shares                               $217,828
   Net asset value of shares issued to shareholders
     in reinvestment of distributions                                2,464
   Cost of shares reacquired                                        (5,040)
                                                                  ---------
     Increase in net assets from Series share transactions        $215,252
                                                                  ---------
       Total increase in net assets                               $219,335
Net assets:
   At beginning of period                                            8,600
                                                                  ---------
   At end of period                                               $227,935
                                                                  ========

*For the period from the commencement of investment operations, October 24, 1995
 to December 31, 1995.

See notes to financial statements

<PAGE>

FINANCIAL STATEMENTS - continued

Financial Highlights
- ------------------------------------------------------------------------------
Period Ended December 31, 1995*
- ------------------------------------------------------------------------------
Per share data (for a share outstanding
   throughout each period):
Net asset value - beginning of period                     $ 10.00
                                                          -------
Income from investment operations# -
   Net investment incomess.                               $  0.09
   Net realized and unrealized gain on investments           0.21
                                                          -------
       Total from investment operations                   $  0.30
                                                          -------
Less distributions declared to shareholders -
   From net investment income                             $ (0.09)
   From net realized gain on investments                    (0.02)
                                                          -------
       Total distributions declared to shareholders       $ (0.11)
                                                          -------
Net asset value - end of period                           $ 10.19
                                                          =======
Total return                                                3.02%++
 Ratios (to average net assets)/Supplementary data(S):
   Expenses                                                 1.00%+
   Net investment income                                    4.89%+
Portfolio turnover                                            55%
Net assets at end of period (000 omitted)                 $   228

 *  For the period from the commencement of investment operations, October 24,
    1995 to December 31, 1995.
 +  Annualized.
++  Not annualized.
 #  Per share data is based on average shares outstanding.
(S) The adviser voluntarily agreed to maintain the expenses of the Series at
    not more than 1.00% of average daily net assets To the extent actual
    expenses were over these limitations, the net investment loss per share and
    the ratios would have been:

      Net investment loss                                 $ (0.70)
            Ratios (to average net assets):
         Expenses                                           43.85%+
            Net investment loss                           (37.96)%+

See notes to financial statements

<PAGE>

NOTES TO FINANCIAL STATEMENTS

(1) Business and Organization
MFS Bond Series (the Series) is a diversified series of MFS Variable Insurance
Trust (the Trust) which is comprised of the following twelve series: MFS Bond
Series, MFS Emerging Growth Series, MFS Growth Series, MFS Growth with Income
Series, MFS High Income Series, MFS Limited Maturity Series, MFS Money Market
Series, MFS Research Series, MFS Strategic Fixed Income Series, MFS Total Return
Series, MFS Utilities Series and MFS World Governments Series. The Trust is
organized as a Massachusetts business trust and is registered under the
Investment Company Act of 1940, as amended, as an open-end management investment
company.

The shareholders of each Series of the Trust are separate accounts of insurance
companies which offer variable annuity and/or life insurance products. The
Series was seeded on or about February 1, 1994, but remained inactive until the
current period. The commencement of investment operations took place on October
24, 1995. As of December 31, 1995 there were five shareholders in the Series.

(2) Significant Accounting Policies
Investment Valuations - Debt securities (other than short-term obligations which
mature in 60 days or less), including listed issues are valued on the basis of
valuations furnished by dealers or by a pricing service with consideration to
factors such as institutional-size trading in similar groups of securities,
yield, quality, coupon rate, maturity, type of issue, trading characteristics
and other market data, without exclusive reliance upon exchange or
over-the-counter prices. Short-term obligations, which mature in 60 days or
less, are valued at amortized cost, which approximates market value. Securities
for which there are no such quotations or valuations are valued at fair value as
determined in good faith by or at the direction of the Trustees.

Repurchase Agreements - The Series may enter into repurchase agreements with
institutions that the Series' investment adviser has determined are
creditworthy. Each repurchase agreement is recorded at cost. The Series requires
that the securities purchased in a repurchase transaction be transferred to the
custodian in a manner sufficient to enable the Series to obtain those securities
in the event of a default under the repurchase agreement. The Series monitors,
on a daily basis, the value of the securities transferred to ensure that the
value, including accrued interest, of the securities under each repurchase
agreement is greater than amounts owed to the Series under each such repurchase
agreement.

Deferred Organization Expenses - Costs incurred by the Series in connection with
its organization have been deferred and are being amortized on a straight-line
basis over a five-year period beginning on the date of commencement of
investment operations of the Series.

Investment Transactions and Income - Investment transactions are recorded on the
trade date. Interest income is recorded on the accrual basis. All premium and
original issue discount are amortized or accreted for financial statement and
tax reporting purposes as required by federal income tax regulations. Interest
payments received in additional securities are recorded on the ex-interest date
in an amount equal to the value of the security on such date.

Tax Matters and Distributions - The Series' policy is to comply with the
provisions of the Internal Revenue Code (the Code) applicable to regulated
investment companies and to distribute to shareholders all of its taxable
income, including any net realized gain on investments. Accordingly, no
provision for federal income or excise tax is provided. The Series files a tax
return annually using tax accounting methods required under provisions of the
Code which may differ from generally accepted accounting principles, the basis
on which these financial statements are prepared. Accordingly, the amount of net
investment income and net realized gain reported on these financial statements
may differ from that reported on the Series' tax return. Distributions to
shareholders are recorded on the ex-dividend date.

The Series distinguishes between distributions on a tax basis and a financial
reporting basis and requires that only distributions in excess of tax basis
earnings and profits are reported in the financial statements as a return of
capital. Differences in the recognition or classification of income between the
financial statements and tax earnings and profits which result in temporary
over-distributions for financial statement purposes, are classified as
distributions in excess of net investment income or accumulated net realized
gains.

(3) Transactions with Affiliates
Investment Adviser - The Series has an investment advisory agreement with
Massachusetts Financial Services Company (MFS) to provide overall investment
advisory and administrative services, and general office facilities. The
management fee is computed daily and paid monthly at an effective annual rate of
0.60% of its average daily net assets. Under a temporary expense reimbursement
agreement with MFS, MFS has voluntarily agreed to limit the operating expenses
of the Series at levels which increase over time. Currently MFS has agreed to
limit the Series' expenses at an effective annual rate of 1.00% of its average
daily net assets. MFS will pay all Series expenses in excess of the current
limit subject to reimbursement by the Series at a later date. To the extent that
actual Series' expenses do not reach the limit, the Series will reimburse MFS
for prior expenses paid by MFS on behalf of the Series such that the Series'
expense ratio does not exceed 1.00% of its average daily net assets. At December
31, 1995, the aggregate unreimbursed expenses owed to MFS by the Series amounted
to $17,623.

The Series pays no compensation directly to its Trustees who are officers of the
investment adviser, or to officers of the Series, all of whom receive
remuneration for their services to the Series from MFS. Certain of the officers
and Trustees of the Series are officers or directors of MFS and MFS Service
Center, Inc. (MFSC).

Shareholder Servicing Agent - MFSC, a wholly owned subsidiary of MFS, earns a
fee for its services as shareholder servicing agent. The fee is calculated as a
percentage of the average daily net assets at an effective annual rate of up to
0.035%.

(4) Portfolio Securities
Purchases and sales of investments, other than purchased option transactions and
short-term obligations, were as follows:

                                                   Purchases           Sales
- ------------------------------------------------------------------------------
   U.S. government securities                     $   189,984      $   92,278
                                                  -----------      ----------
   Investments (non-U.S. government securities)   $   109,962      $   11,929
                                                  -----------      ----------

The cost and unrealized appreciation or depreciation in value of the investments
owned by the Series, as computed on a federal income tax basis, are as follows:

   Aggregate cost                                                  $  195,739
                                                                   ==========
   Gross unrealized appreciation                                   $    3,948
   Gross unrealized depreciation                                          (55)
                                                                   ----------
   Net unrealized appreciation                                     $    3,893
                                                                   ==========

(5) Shares of Beneficial Interest
The Trust's Declaration of Trust permits the Trustees to issue an unlimited
number of full and fractional shares of beneficial interest (without par value).
Transactions in Series shares were as follows:

<TABLE>
<CAPTION>
Period Ended December 31, 1995*                                                  Shares           Amount
- ---------------------------------------------------------------------------------------------------------
<S>                                                                              <C>            <C>     
Shares sold                                                                      21,762         $217,828
Shares issued to shareholders in reinvestment
  of distributions                                                                  242            2,464
Shares reacquired                                                                  (504)          (5,040)
                                                                                 ------         ---------
Net increase                                                                     21,500         $215,252
                                                                                 ======         ========

<FN>
*For the period from commencement of investment operations, October 24, 1995 to December 31, 1995.
</TABLE>

(6) Line of Credit
The Series entered into an agreement which enables it to participate with other
funds managed by MFS in an unsecured line of credit with a bank which permits
borrowings up to $350 million, collectively. Borrowings may be made to
temporarily finance the repurchase of Series shares. Interest is charged to each
fund, based on its borrowings, at a rate equal to the bank's base rate. In
addition, a commitment fee, based on the average daily unused portion of the
line of credit, is allocated among the participating funds at the end of each
quarter.

<PAGE>

INDEPENDENT AUDITORS' REPORT

To the Trustees of MFS Variable Insurance Trust and Shareholders of MFS Bond
Series:

We have audited the accompanying statement of assets and liabilities, including
the portfolio of investments, of MFS Bond Series (the Series) (one of the series
constituting MFS Variable Insurance Trust) as of December 31, 1995, the related
statements of operations and changes in net assets and financial highlights for
the period from October 24, 1995 (the commencement of investment operations) to
December 31, 1995. These financial statements and financial highlights are the
responsibility of the Series' management. Our responsibility is to express an
opinion on these financial statements and financial highlights based on our
audits.

We conducted our audits 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 and financial
highlights are free of material misstatement. An audit includes examining, on a
test basis, evidence supporting the amounts and disclosures in the financial
statements. Our procedures included confirmation of the securities owned at
December 31, 1995 by correspondence with the custodian and brokers; where
replies were not received from brokers, we performed other auditing procedures.
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 audits provide a reasonable basis
for our opinion.

In our opinion, such financial statements and financial highlights present
fairly, in all material respects, the financial position of MFS Bond Series at
December 31, 1995, the results of its operations, the changes in its net assets
and its financial highlights for the stated period in conformity with generally
accepted accounting principles.

DELOITTE & TOUCHE LLP

Boston, Massachusetts
February 2, 1996

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

This report is prepared for the general information of shareholders. It is
authorized for distribution to prospective investors only when preceded or
accompanied by a current prospectus.


                                                           VFB-2-2/96/1.5M



<PAGE>
[LOGO]                                                       Annual Report for
THE FIRST NAME IN MUTUAL FUNDS                                      Year Ended
                                                             December 31, 1995


MFS(R) MONEY MARKET SERIES
A Series of MFS(R) Variable Insurance Trust

<PAGE>
MFS(R) MONEY MARKET SERIES
A SERIES OF MFS(R)  VARIABLE INSURANCE TRUST

TRUSTEES
A. Keith Brodkin*
Chairman and President

Nelson J. Darling, Jr.
Trustee, Eastern Enterprises
(diversified holding company)

William R. Gutow
Vice Chairman,
Capitol Entertainment
(Blockbuster Video Franchise)

PORTFOLIO MANAGER
Geoffrey L. Kurinsky*

TREASURER
W. Thomas London*

ASSISTANT TREASURER
James O. Yost*

SECRETARY
Stephen E. Cavan*

ASSISTANT SECRETARY
James R. Bordewick, Jr.*


INVESTMENT ADVISER
Massachusetts Financial Services Company
500 Boylston Street
Boston, MA 02116-3741

DISTRIBUTOR
MFS Fund Distributors, Inc.
500 Boylston Street
Boston, MA 02116-3741

SHAREHOLDER SERVICE CENTER
MFS Service Center, Inc.
P.O. Box 1400
Boston, MA 02107-9906

For additional information, contact your financial adviser.

CUSTODIAN
Investors Bank & Trust Company

AUDITORS
Deloitte & Touche LLP


*Affiliated with the Investment Adviser
<PAGE>
Dear Contract Owner:
An environment of declining interest rates and a favorable outlook for inflation
helped establish a pattern of positive performance in both fixed-income and
equity markets around the world during the past 12 months. Yields on many
fixed-income securities continued to decline throughout the year, and as bond
prices rose in response to these declines, all of the fixed-income investments
in the Trust experienced positive total returns. At the same time, lower
interest rates and strong corporate earnings reports through most of the year
helped the prices of many stocks to rise over the period, producing strong
returns.

U.S. Outlook
Moderate but sustainable growth was the hallmark of the economic expansion's
fifth year, although some signs of sluggishness were evident late in the year.
Recent retail sales, for example, have been disappointing, in part because of
rising levels of consumer debt. In addition, growth is not expected to get much
help from the manufacturing sector as order flows from manufacturers have
moderated. Export activity, meanwhile, is also expected to remain modest as
continued weakness abroad limits demand for many U.S. goods. However, the
Federal Reserve Board's consistent and, so far, successful efforts to fight
inflation seem to be giving consumers and businesses enough longer-term
confidence to help maintain modest growth in real (adjusted for inflation) gross
domestic product into 1996.

Global Outlook
A pattern of slow to moderate growth and low and controlled inflation remains a
dominant theme in major industrialized countries, including the United States.
While the recent recovery of the dollar against the German mark and the Japanese
yen has added some strength to the economies of Europe and Japan, the outlook is
for sluggish economic growth, in the near term at least. And although moves by
central banks in Germany and Japan to lower interest rates have helped stimulate
domestic demand, many industrial companies in these countries are still
struggling to compete in a global marketplace in which the prices of their
products are less competitively priced. On the positive side, this does mean
little to no inflationary pressure in these countries, and we believe that this,
combined with further reductions in interest rates, could help provide a
foundation for stronger economic growth in the long run. Also, we believe that
many of the cost-cutting measures taken by companies in these countries over the
past few years will ultimately provide earnings leverage when economic growth
improves. Inflation in most overseas economies remains in a downward trend,
providing fixed-income investors with opportunities for relatively attractive
real rates of interest, possibly accompanied by moderate price appreciation.
While the dollar continues to represent a sound store of long-term value, its
relative strength in the near term is being restrained by the persistent U.S.
current-account deficit.

Bond Markets
Given the recent signs of economic weakness, prospects for the Federal Reserve
Board's further decreasing short-term interest rates are good. Long-term rates,
meanwhile, moved noticeably downward in the latter months of 1995 in
anticipation of more modest fourth-quarter growth with continued low inflation.
While there were some increases in commodity prices early in the year, companies
found it difficult to pass these on at the consumer level as they continue to
fight for market share. Additionally, unit labor costs remain under control and
seem to be growing at a pace that is near or below the ongoing inflation rate.
Thus, with long-term U.S. government bonds yielding approximately 6% in an
environment of 2% to 3% inflation, real rates of return in the fixed-income
markets remain relatively attractive.

In world bond markets, slowing economic growth, low inflation, and declining
official interest rates helped result in solid performance during the past 12
months. European governments are engaged in multi-year programs to reduce their
budget deficits and debt levels. These programs are positive for bonds in that
lower government spending tends to reduce inflationary pressures and lower
issuance of government debt reduces supply pressures on the bond market. In the
Japanese market, powerful deflationary forces have supported a drop in yields to
historically low levels. We now feel this process may be drawing to an end,
given a reversal of priorities at the central bank from fighting inflation,
which is now non-existent, to offsetting the downward spiral of deflation. The
high returns of the U.S. bond market, as measured by the Lehman Brothers
Government Bond Index, have been echoed in other U.S. dollar-bloc markets,
including Australia, New Zealand, and Canada, all of which saw positive
performance over the past year according to Salomon Brothers. Currently, the
Australian market offers significantly higher yields than the U.S. market, and,
we believe, represents good value. As long as the outlook for U.S. bonds remains
positive, these related markets could outperform the U.S. market.

Comments from the portfolio manager of this Series are presented on the
following page. We appreciate your support and welcome any questions or comments
you may have.

Respectfully,


/s/ A. Keith Brodkin                                 /s/ Geoffrey L. Kurinsky
- ---------------------                                ------------------------
A. Keith Brodkin                                     Geoffrey L. Kurinsky
Chairman and President                               Portfolio Manager

January 12, 1996
<PAGE>
MFS(R) MONEY MARKET SERIES

The Money Market Series seeks as high a level of current income as is considered
consistent with the preservation of capital and liquidity by investing in
short-term money market securities issued or guaranteed by the U.S. Treasury or
its agencies, or instrumentalities of the U.S. government, as well as the
highest-quality corporate issues, in order to minimize credit risk. Investments
in the Series neither insured nor guaranteed by the U.S government. As of
December 31, 1995, the Series had assets of approximately $180,000, which were
invested in five different government issues with an average maturity of 16
days.

PORTFOLIO MANAGER PROFILE

Geoffrey Kurinsky began his career at MFS in 1987 in the Fixed Income
Department. Mr. Kurinsky is a graduate of the University of Massachusetts and
Boston University's Graduate School of Management. He was named Assistant Vice
President in 1988 and Vice President in 1989. In 1992, he became Portfolio
Manager of the MFS Money Market Series. He was named Senior Vice President in
1993. Mr. Kurinsky is a Certified Public Accountant.

PERFORMANCE SUMMARY

The aggregate total return from January 3, 1995+ to December 31, 1995 was
+4.37%. All Series results represent past performance and are not necessarily an
indication of future results. Investment return and principal value will
fluctuate, and shares, when redeemed, may be worth more or less than their
original cost. All Series results reflect the applicable expense subsidy which
is explained in the Notes to Financial Statements. Had the subsidy not been in
effect, the results would have been less favorable. All Series results do not
reflect expenses that would be imposed by insurance company separate accounts.


+Commencement of investment operations.
<PAGE>
PORTFOLIO OF INVESTMENTS - December 31, 1995

<TABLE>
<CAPTION>
U.S. Government and Agency Obligations - 74.8%
==========================================================================================================
                                                                          Principal Amount
Issuer                                                                       (000 Omitted)           Value
- ----------------------------------------------------------------------------------------------------------
<S>                                                                                    <C>   <C>          
   Federal Farm Credit Bank, due 1/08/96                                               $50   $      49,946
   Federal Home Loan Bank, due 2/09/96                                                  40          39,760
   Federal Home Loan Mortgage Corp., due 1/02/96                                        20          19,997
   Federal National Mortgage Assn., due 1/09/96                                         25          24,969
   Tennesse Valley Authority, due 1/05/96                                               35          34,977
- ----------------------------------------------------------------------------------------------------------
Total Investments, at Amortized Cost                                                         $     169,649
- ----------------------------------------------------------------------------------------------------------

Other Assets, Less Liabilities - 5.8%                                                               10,485
==========================================================================================================
Net Assets - 100.0%                                                                          $     180,134
- ----------------------------------------------------------------------------------------------------------
</TABLE>

See notes to financial statements
<PAGE>
FINANCIAL STATEMENTS

<TABLE>
<CAPTION>
Statement of Assets and Liabilities
=======================================================================================================
December 31, 1995
- -------------------------------------------------------------------------------------------------------
<S>                                                                                     <C>            
Assets:
   Investments, at amortized cost and value                                             $       169,649
   Cash                                                                                           9,606
   Receivable from investment adviser                                                             6,651
   Deferred organization expenses                                                                 7,377
                                                                                        ---------------
         Total assets                                                                   $       193,283
                                                                                        ---------------
Liabilities:
   Payable to affiliates for management fee                                             $             7
   Accrued expenses and other liabilities                                                        13,142
                                                                                        ---------------
         Total liabilities                                                              $        13,149
                                                                                        ---------------
Net assets (represented by paid-in capital)                                             $       180,134
                                                                                        ---------------
Shares of beneficial interest outstanding                                                       180,134
                                                                                        ---------------
Net asset value, offering price and redemption price per share
   (net assets of $180,134 / 180,134 shares of beneficial interest outstanding)              $1.00
                                                                                        ===============
</TABLE>

See notes to financial statements
<PAGE>
FINANCIAL STATEMENTS - continued

<TABLE>
<CAPTION>
Statement of Operations
======================================================================================================
Period Ended December 31, 1995*
- ------------------------------------------------------------------------------------------------------
<S>                                                                                     <C>           
Net investment income:
   Interest Income                                                                      $        6,136
                                                                                        --------------
   Expenses -
      Management fee                                                                    $          594
      Trustees' compensation                                                                     1,725
      Shareholder servicing agent fee                                                               41
      Auditing fees                                                                             13,243
      Printing                                                                                   7,038
      Amortization of organization expenses                                                      1,811
      Legal fees                                                                                   682
      Custodian fee                                                                                324
      Miscellaneous                                                                                270
                                                                                        --------------
            Total expenses                                                              $       25,728
      Reduction of expenses by investment adviser                                              (24,976)
      Fees paid indirectly                                                                         (39)
                                                                                        --------------
            Net expenses                                                                $          713
                                                                                        --------------
               Net investment income                                                    $        5,423
                                                                                        ==============

*For the period from the commencement of investment operations, January 3, 1995 to December 31, 1995.
</TABLE>

See notes to financial statements
<PAGE>
FINANCIAL STATEMENTS - continued

<TABLE>
<CAPTION>
Statement of Changes in Net Assets
=======================================================================================================
Period Ended December 31, 1995*
- -------------------------------------------------------------------------------------------------------
<S>                                                                                     <C>            
Increase (decrease) in net assets:
From operations -
   Net investment income, declared as distributions to shareholders                     $         5,423
                                                                                        ---------------
Series share (principal) transactions at net asset value of $1.00 per share -
   Net proceeds from sale of shares                                                     $       290,633
   Net asset value of shares issued to shareholders
      in reinvestment of distributions                                                            5,321
   Cost of shares reacquired                                                                   (124,420)
                                                                                        ---------------
         Total increase in net assets                                                   $       171,534

Net assets:
      At beginning of period                                                                      8,600
                                                                                        ---------------
      At end of period                                                                  $       180,134
                                                                                        ===============

*For the period from the commencement of investment operations, January 3, 1995 to December 31, 1995.
</TABLE>

See notes to financial statements
<PAGE>
FINANCIAL STATEMENTS - continued

<TABLE>
<CAPTION>
Financial Highlights
======================================================================================================
Period Ended December 31, 1995*
- ------------------------------------------------------------------------------------------------------
<S>                                                                                  <C>         
Per share data (for a share outstanding throughout each period):
Net asset value - beginning of period                                                $       1.00
                                                                                     ------------
Income from investment operations # -
   Net investment income{S}                                                          $       0.04
Less distributions declared to shareholders
   from net investment income                                                               (0.04)
                                                                                     ------------
Net asset value - end of period                                                      $       1.00
                                                                                     ============
Total return                                                                                4.37%++
Ratios (to average net assets)/Supplemental data{S}:
   Expenses                                                                                 0.60%+
   Net investment income                                                                    4.54%+
Net assets at end of period (000 omitted)                                            $        180

<FN>
  *For the period from the commencement of investment operations, January 3,
   1995 to December 31, 1995.
  +Annualized.
 ++Not annualized.
  #Per share data is based on average shares outstanding.
{S}The adviser voluntarily agreed to maintain the expenses of the Series at
   not more than 0.60% of average daily net assets. To the extent actual
   expenses were over these limitations, the net investment loss per share and
   the ratios would have been:
</FN>

<S>                                                                                  <C>         
      Net investment loss                                                            $      (0.14)
      Ratios (to average net assets):
         Expenses                                                                          21.54%+
         Net investment loss                                                             (16.37)%+
</TABLE>

See notes to financial statements
<PAGE>
NOTES TO FINANCIAL STATEMENTS

(1) Business and Organization
MFS Money Market Series (the Series) is a diversified series of MFS Variable
Insurance Trust (the Trust) which is comprised of the following twelve series:
MFS Bond Series, MFS Emerging Growth Series, MFS Growth Series, MFS Growth with
Income Series, MFS High Income Series, MFS Limited Maturity Series, MFS Money
Market Series, MFS Research Series, MFS Strategic Fixed Income Series, MFS Total
Return Series, MFS Utilities Series and MFS World Governments Series. The Trust
is organized as a Massachusetts business trust and is registered under the
Investment Company Act of 1940, as amended, as an open-end management investment
company.

The shareholders of each Series of the Trust are separate accounts of insurance
companies which offer variable annuity and/or life insurance products. The
Series was seeded on or about February 1, 1994, but remained inactive until the
current period. The commencement of investment operations took place on January
3, 1995. As of December 31, 1995 there were five shareholders in the Series.

(2) Significant Accounting Policies
Investment Valuations - Money market instruments are valued at amortized cost,
which the Trustees have determined in good faith constitutes fair value. The
Series' use of amortized cost is subject to the Series' compliance with certain
conditions as specified under Rule 2a-7 of the Investment Company Act of 1940.

Repurchase Agreements - The Series may enter into repurchase agreements with
institutions that the Series' investment adviser has determined are
creditworthy. Each repurchase agreement is recorded at cost. The Series requires
that the securities purchased in a repurchase transaction be transferred to the
custodian in a manner sufficient to enable the Series to obtain those securities
in the event of a default under the repurchase agreement. The Series monitors,
on a daily basis, the value of the securities transferred to ensure that the
value, including accrued interest, of the securities under each repurchase
agreement is greater than amounts owed to the Series under each such repurchase
agreement.

Deferred Organization Expenses - Costs incurred by the Series in connection with
its organization have been deferred and are being amortized on a straight-line
basis over a five-year period beginning on the date of commencement of
investment operations of the Series.

Investment Transactions and Income - Investment transactions are recorded on the
trade date. Interest income is recorded on the accrual basis. All premium and
original issue discount are amortized or accreted for financial statement and
tax reporting purposes as required by federal income tax regulations.

Fees Paid Indirectly - The Series' custodian bank calculates its fee based on
the Series' average daily net assets. This fee is reduced according to an
expense offset arrangement with State Street Bank and Trust Company, the Trust's
dividend disbursing agent, which provides for partial reimbursement of custody
fees based on a formula developed to measure the value of cash deposited by the
Series with the custodian and with the dividend disbursing agent. This amount is
shown as a reduction of expenses on the Statement of Operations.

Tax Matters and Distributions - The Series' policy is to comply with the
provisions of the Internal Revenue Code (the Code) applicable to regulated
investment companies and to distribute to shareholders all of its taxable
income, including any net realized gain on investments. Accordingly, no
provision for federal income or excise tax is provided. The Series files a tax
return annually using tax accounting methods required under provisions of the
Code which may differ from generally accepted accounting principles, the basis
on which these financial statements are prepared. Accordingly, the amount of net
investment income and net realized gain reported on these financial statements
may differ from that reported on the Series' tax return.

The Series distinguishes between distributions on a tax basis and a financial
reporting basis and requires that only distributions in excess of tax basis
earnings and profits are reported in the financial statements as a return of
capital. Differences in the recognition or classification of income between the
financial statements and tax earnings and profits which result in temporary
over-distributions for financial statement purposes, are classified as
distributions in excess of net investment income or accumulated net realized
gains.

(3) Transactions with Affiliates
Investment Adviser - The Series has an investment advisory agreement with
Massachusetts Financial Services Company (MFS) to provide overall investment
advisory and administrative services, and general office facilities. The
management fee is computed daily and paid monthly at an effective annual rate of
0.50% of its average daily net assets. Under a temporary expense reimbursement
agreement with MFS, MFS has voluntarily agreed to limit the operating expenses
of the Series at levels which increase over time. Currently MFS has agreed to
limit the Series' expenses at an effective annual rate of 0.60% of its average
daily net assets. MFS will pay all Series' expenses in excess of the current
limit subject to reimbursement by the Series at a later date. To the extent that
actual Series' expenses do not reach the limit, the Series will reimburse MFS
for prior expenses paid by MFS on behalf of the Series such that the Series'
expense ratio does not exceed 0.60% of its average daily net assets. At December
31, 1995, the aggregate unreimbursed expenses owed to MFS by the Series amounted
to $24,976.

The Series pays no compensation directly to its Trustees who are officers of the
investment adviser, or to officers of the Series, all of whom receive
remuneration for their services to the Series from MFS. Certain of the officers
and Trustees of the Series are officers or directors of MFS and MFS Service
Center, Inc. (MFSC).

Shareholder Servicing Agent - MFSC, a wholly owned subsidiary of MFS, earns a
fee for its services as shareholder servicing agent. The fee is calculated as a
percentage of the average daily net assets at an effective annual rate of up to
0.035%.

(4) Portfolio Securities
Purchases and maturities and sales of money market investments, exclusive of
securities subject to repurchase agreements, consisted solely of U.S. government
securities and aggregated $2,341,238 and $2,177,730, respectively.

(5) Shares of Beneficial Interest
The Declaration of Trust permits the Trustees to issue an unlimited number of
full and fractional shares of beneficial interest (without par value).

(6) Line of Credit
The Series entered into an agreement which enables it to participate with other
funds managed by MFS in an unsecured line of credit with a bank which permits
borrowings up to $350 million, collectively. Borrowings may be made to
temporarily finance the repurchase of Series shares. Interest is charged to each
fund, based on its borrowings, at a rate equal to the bank's base rate. In
addition, a commitment fee, based on the average daily unused portion of the
line of credit, is allocated among the participating funds at the end of each
quarter.
<PAGE>
INDEPENDENT AUDITORS' REPORT

To the Trustees of MFS Variable Insurance Trust and Shareholders of MFS Money
Market Series:

We have audited the accompanying statement of assets and liabilities, including
the portfolio of investments, of MFS Money Market Series (the Series) (one of
the series constituting MFS Variable Insurance Trust) as of December 31, 1995,
the related statements of operations and changes in net assets and financial
highlights for the period from January 3, 1995 (the commencement of investment
operations) to December 31, 1995. These financial statements and financial
highlights are the responsibility of the Series' management. Our responsibility
is to express an opinion on these financial statements and financial highlights
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 and financial highlights are
free of material misstatement. An audit includes examining, on a test basis,
evidence supporting the amounts and disclosures in the financial statements. Our
procedures included confirmation of the securities owned at December 31, 1995 by
correspondence 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, such financial statements and financial highlights present
fairly, in all material respects, the financial position of MFS Money Market
Series at December 31, 1995, the results of its operations, the changes in its
net assets and its financial highlights for the stated period in conformity with
generally accepted accounting principles.



DELOITTE & TOUCHE LLP


Boston, Massachusetts
February 2, 1996


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

This report is prepared for the general information of shareholders. It is
authorized for distribution to prospective investors only when preceded or
accompanied by a current prospectus.
<PAGE>



                                                                      VMM-2-2/96



<PAGE>

                                   SIGNATURES


     Pursuant to the requirements of the Securities Act of 1933 and the
Investment Company Act of 1940, the Registrant has duly caused this Post-
Effective Amendment to the Registration Statement to be signed on its behalf by
the undersigned, thereto duly authorized, in the City of Boston and The
Commonwealth of Massachusetts on the 30th day of May, 1996.


                                        MFS VARIABLE INSURANCE TRUST


                                        By:  JAMES R. BORDEWICK, JR.
                                           -------------------------
                                        Name:   James R. Bordewick, Jr.
                                        Title:  Assistant Secretary

     Pursuant to the requirements of the Securities Act of 1933, this Post-
Effective Amendment to its Registration Statement has been signed below by the
following persons in the capacities indicated on May 30, 1996.

          SIGNATURE                                    TITLE


A. KEITH BRODKIN*                       Chairman, President (Principal Executive
- -----------------                       Officer) and Trustee
A. Keith Brodkin


W. THOMAS LONDON*                       Treasurer (Principal Financial Officer -
- -----------------                       and Principal Accounting Officer)
W. Thomas London


WILLIAM R. GUTOW*                       Trustee
- -----------------
William R. Gutow


NELSON J. DARLING, JR.*                 Trustee
- -----------------------
Nelson J. Darling, Jr.


                                        *By:  JAMES R. BORDEWICK, JR.
                                            -------------------------
                                        Name: James R. Bordewick, Jr.
                                              as Attorney-in-fact

                                        Executed by James R. Bordewick, Jr. on
                                        behalf of those indicated pursuant
                                        to a Power of Attorney dated August 12,
                                        1994, incorporated by reference to the
                                        Registrant's Post-Effective Amendment
                                        No. 4 filed with the Securities and
                                        Exchange Commission on October 26, 1995.


<PAGE>
                                                  EXHIBIT NO. 1(d)




                          MFS VARIABLE INSURANCE TRUST

                           CERTIFICATION OF AMENDMENT

                             TO DECLARATION OF TRUST

                             REDESIGNATION OF SERIES


     Pursuant to Section 6.9 of the Amended and Restated Declaration of Trust
dated January 24, 1996 (the "Declaration"), of MFS Variable Insurance Trust (the
"Trust"), the Trustees of the Trust hereby redesignate an existing series of
Shares (as defined in the Declaration):

     1.   The series designated as MFS Growth Series shall be redesignated
          as MFS Value Series.

     Pursuant to Section 6.9(i) of the Declaration, this redesignation of series
of Shares shall be effective upon the execution of a majority of the Trustees of
the Trust.
<PAGE>

     IN WITNESS WHEREOF, a majority of the Trustees of the Trust have executed
this redesignation of series this 24th day of April, 1996.




A. KEITH BRODKIN
A. Keith Brodkin




NELSON J. DARLING, JR.
Nelson J. Darling, Jr.




WILLIAM R. GUTOW
William R. Gutow

<PAGE>
                                                  EXHIBIT NO. 11



                          INDEPENDENT AUDITORS' CONSENT




     We consent to the incorporation by reference in this Post-Effective
Amendment No. 6 to the Registration Statement (File No. 33-74668) of MFS
Variable Insurance Trust of our reports each dated February 2, 1996 appearing in
the annual reports to shareholders of MFS Emerging Growth Series, MFS Research
Series, MFS Growth With Income Series, MFS Total Return Series, MFS Utilities
Series, MFS High Income Series, MFS World Governments Series, MFS Bond Series
and MFS Money Market Series for the year ended December 31, 1995, and to the
inclusion in such Registration Statement of our report dated February 2, 1996
relating to the statements of assets and liabilities of MFS Growth Series, MFS
Strategic Fixed Income Series, and MFS Limited Maturity Series as of December
31, 1995.  We also consent to the references to us under the headings "Condensed
Financial Information" in the Prospectus and "Independent Auditors and Financial
Statements" in the Statement of Additional Information, both of which are part
of such Registration Statement.

DELOITTE & TOUCHE LLP

Boston, Massachusetts
May 28, 1996

<TABLE> <S> <C>

<PAGE>
<ARTICLE> 6
<LEGEND>
THIS  SCHEDULE  CONTAINS  SUMMARY  FINANCIAL   INFORMATION  EXTRACTED  FROM  THE
FINANCIAL  STATEMENTS  OF  MFS  VARIABLE  INSURANCE  TRUST-BOND  SERIES  AND  IS
QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FIANCIAL STATEMENTS.
</LEGEND>
<SERIES>
   <NUMBER> 09
   <NAME> MFS VARIABLE INSURANCE TRUST-BOND SERIES
       
<S>                             <C>
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                   DEC-31-1995
<PERIOD-END>                        DEC-31-1995
<INVESTMENTS-AT-COST>                     195,739
<INVESTMENTS-AT-VALUE>                    199,632
<RECEIVABLES>                               7,643
<ASSETS-OTHER>                              8,851
<OTHER-ITEMS-ASSETS>                       36,949
<TOTAL-ASSETS>                            253,075
<PAYABLE-FOR-SECURITIES>                   11,810
<SENIOR-LONG-TERM-DEBT>                         0
<OTHER-ITEMS-LIABILITIES>                  13,330
<TOTAL-LIABILITIES>                        25,140
<SENIOR-EQUITY>                                 0
<PAID-IN-CAPITAL-COMMON>                  223,852
<SHARES-COMMON-STOCK>                      22,360
<SHARES-COMMON-PRIOR>                         860
<ACCUMULATED-NII-CURRENT>                       0
<OVERDISTRIBUTION-NII>                          0
<ACCUMULATED-NET-GAINS>                       190
<OVERDISTRIBUTION-GAINS>                        0
<ACCUM-APPREC-OR-DEPREC>                    3,893
<NET-ASSETS>                              227,935
<DIVIDEND-INCOME>                               0
<INTEREST-INCOME>                           2,423
<OTHER-INCOME>                                  0
<EXPENSES-NET>                                412
<NET-INVESTMENT-INCOME>                     2,011
<REALIZED-GAINS-CURRENT>                      643
<APPREC-INCREASE-CURRENT>                   3,893
<NET-CHANGE-FROM-OPS>                       6,547
<EQUALIZATION>                                  0
<DISTRIBUTIONS-OF-INCOME>                   2,035
<DISTRIBUTIONS-OF-GAINS>                      429
<DISTRIBUTIONS-OTHER>                           0
<NUMBER-OF-SHARES-SOLD>                    21,762
<NUMBER-OF-SHARES-REDEEMED>                 (504)
<SHARES-REINVESTED>                           242
<NET-CHANGE-IN-ASSETS>                    219,335
<ACCUMULATED-NII-PRIOR>                         0
<ACCUMULATED-GAINS-PRIOR>                       0
<OVERDISTRIB-NII-PRIOR>                         0
<OVERDIST-NET-GAINS-PRIOR>                      0
<GROSS-ADVISORY-FEES>                         247
<INTEREST-EXPENSE>                              0
<GROSS-EXPENSE>                            18,035
<AVERAGE-NET-ASSETS>                      220,741
<PER-SHARE-NAV-BEGIN>                       10.00
<PER-SHARE-NII>                              0.09
<PER-SHARE-GAIN-APPREC>                      0.21
<PER-SHARE-DIVIDEND>                         0.09
<PER-SHARE-DISTRIBUTIONS>                    0.02
<RETURNS-OF-CAPITAL>                         0.00
<PER-SHARE-NAV-END>                         10.19
<EXPENSE-RATIO>                              1.00
<AVG-DEBT-OUTSTANDING>                          0
<AVG-DEBT-PER-SHARE>                            0
        




</TABLE>

<TABLE> <S> <C>

<PAGE>
<ARTICLE> 6
<LEGEND>
THIS  SCHEDULE  CONTAINS  SUMMARY  FINANCIAL   INFORMATION  EXTRACTED  FROM  THE
FINANCIAL  STATEMENTS OF MFS VARIABLE  INSURANCE  TRUST - EMERGING GROWTH SERIES
AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<SERIES>
   <NUMBER> 7
   <NAME> MFS VARIABLE INSURANCE TRUST - EMERGING GROWTH
          SERIES
       
<S>                             <C>
<PERIOD-TYPE>                   YEAR
<FISCAL-YEAR-END>                   DEC-31-1995
<PERIOD-END>                        DEC-31-1995
<INVESTMENTS-AT-COST>                    3,836,735
<INVESTMENTS-AT-VALUE>                   4,010,454
<RECEIVABLES>                               55,195
<ASSETS-OTHER>                               8,388
<OTHER-ITEMS-ASSETS>                        13,806
<TOTAL-ASSETS>                           4,087,843
<PAYABLE-FOR-SECURITIES>                   203,591
<SENIOR-LONG-TERM-DEBT>                          0
<OTHER-ITEMS-LIABILITIES>                   15,622
<TOTAL-LIABILITIES>                        219,213
<SENIOR-EQUITY>                                  0
<PAID-IN-CAPITAL-COMMON>                 3,694,911
<SHARES-COMMON-STOCK>                      339,022
<SHARES-COMMON-PRIOR>                          860
<ACCUMULATED-NII-CURRENT>                        0
<OVERDISTRIBUTION-NII>                           0
<ACCUMULATED-NET-GAINS>                          0
<OVERDISTRIBUTION-GAINS>                         0
<ACCUM-APPREC-OR-DEPREC>                   173,719
<NET-ASSETS>                             3,868,630
<DIVIDEND-INCOME>                              462
<INTEREST-INCOME>                            8,766
<OTHER-INCOME>                                   0
<EXPENSES-NET>                               8,351
<NET-INVESTMENT-INCOME>                        877
<REALIZED-GAINS-CURRENT>                    81,576
<APPREC-INCREASE-CURRENT>                  173,719
<NET-CHANGE-FROM-OPS>                      256,172
<EQUALIZATION>                                   0
<DISTRIBUTIONS-OF-INCOME>                    1,889
<DISTRIBUTIONS-OF-GAINS>                   102,694
<DISTRIBUTIONS-OTHER>                            0
<NUMBER-OF-SHARES-SOLD>                    501,081
<NUMBER-OF-SHARES-REDEEMED>                172,174
<SHARES-REINVESTED>                          9,255
<NET-CHANGE-IN-ASSETS>                   3,860,030
<ACCUMULATED-NII-PRIOR>                          0
<ACCUMULATED-GAINS-PRIOR>                        0
<OVERDISTRIB-NII-PRIOR>                          0
<OVERDIST-NET-GAINS-PRIOR>                       0
<GROSS-ADVISORY-FEES>                        6,262
<INTEREST-EXPENSE>                               0
<GROSS-EXPENSE>                             24,223
<AVERAGE-NET-ASSETS>                     1,911,715
<PER-SHARE-NAV-BEGIN>                        10.00
<PER-SHARE-NII>                               0.01
<PER-SHARE-GAIN-APPREC>                       1.74
<PER-SHARE-DIVIDEND>                        (0.01)
<PER-SHARE-DISTRIBUTIONS>                   (0.34)
<RETURNS-OF-CAPITAL>                        (0.07)
<PER-SHARE-NAV-END>                          11.41
<EXPENSE-RATIO>                               1.00
<AVG-DEBT-OUTSTANDING>                           0
<AVG-DEBT-PER-SHARE>                             0
        

</TABLE>

<TABLE> <S> <C>

<PAGE>
<ARTICLE> 6
<LEGEND>
THIS  SCHEDULE  CONTAINS  SUMMARY  FINANCIAL   INFORMATION  EXTRACTED  FROM  THE
FINANCIAL  STATEMENTS OF MFS VARIABLE INSURANCE  TRUST-GROWTH WITH INCOME SERIES
AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<SERIES>
   <NUMBER> 5
   <NAME> MFS VARIABLE INSURANCE TRUST-GROWTH WITH INCOME
          SERIES
       
<S>                             <C>
<PERIOD-TYPE>                   YEAR
<FISCAL-YEAR-END>                   DEC-31-1995
<PERIOD-END>                        DEC-31-1995
<INVESTMENTS-AT-COST>                     318,054
<INVESTMENTS-AT-VALUE>                    338,806
<RECEIVABLES>                               6,426
<ASSETS-OTHER>                              8,765
<OTHER-ITEMS-ASSETS>                       24,044
<TOTAL-ASSETS>                            378,041
<PAYABLE-FOR-SECURITIES>                        0
<SENIOR-LONG-TERM-DEBT>                         0
<OTHER-ITEMS-LIABILITIES>                  13,218
<TOTAL-LIABILITIES>                        13,218
<SENIOR-EQUITY>                                 0
<PAID-IN-CAPITAL-COMMON>                  344,071
<SHARES-COMMON-STOCK>                      34,402
<SHARES-COMMON-PRIOR>                         860
<ACCUMULATED-NII-CURRENT>                       0
<OVERDISTRIBUTION-NII>                          0
<ACCUMULATED-NET-GAINS>                         0
<OVERDISTRIBUTION-GAINS>                        0
<ACCUM-APPREC-OR-DEPREC>                   20,752
<NET-ASSETS>                              364,823
<DIVIDEND-INCOME>                           1,890
<INTEREST-INCOME>                             653
<OTHER-INCOME>                                  0
<EXPENSES-NET>                                796
<NET-INVESTMENT-INCOME>                     1,747
<REALIZED-GAINS-CURRENT>                       47
<APPREC-INCREASE-CURRENT>                  20,752
<NET-CHANGE-FROM-OPS>                      22,546
<EQUALIZATION>                                  0
<DISTRIBUTIONS-OF-INCOME>                   1,849
<DISTRIBUTIONS-OF-GAINS>                        0
<DISTRIBUTIONS-OTHER>                           0
<NUMBER-OF-SHARES-SOLD>                    33,868
<NUMBER-OF-SHARES-REDEEMED>                   500
<SHARES-REINVESTED>                           174
<NET-CHANGE-IN-ASSETS>                    356,223
<ACCUMULATED-NII-PRIOR>                         0
<ACCUMULATED-GAINS-PRIOR>                       0
<OVERDISTRIB-NII-PRIOR>                         0
<OVERDIST-NET-GAINS-PRIOR>                      0
<GROSS-ADVISORY-FEES>                         597
<INTEREST-EXPENSE>                              0
<GROSS-EXPENSE>                            17,022
<AVERAGE-NET-ASSETS>                      353,313
<PER-SHARE-NAV-BEGIN>                       10.00
<PER-SHARE-NII>                              0.05
<PER-SHARE-GAIN-APPREC>                      0.61
<PER-SHARE-DIVIDEND>                       (0.05)
<PER-SHARE-DISTRIBUTIONS>                    0.00
<RETURNS-OF-CAPITAL>                         0.00
<PER-SHARE-NAV-END>                         10.61
<EXPENSE-RATIO>                              1.00
<AVG-DEBT-OUTSTANDING>                          0
<AVG-DEBT-PER-SHARE>                            0
        

















</TABLE>

<TABLE> <S> <C>

<PAGE>
<ARTICLE> 6
<LEGEND>
THIS  SCHEDULE  CONTAINS  SUMMARY  FINANCIAL   INFORMATION  EXTRACTED  FROM  THE
FINANCIAL STATEMENTS OF MFS VARIABLE INSURANCE TRUST - HIGH INCOME SERIES AND IS
QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<SERIES>
   <NUMBER> 11
   <NAME> MFS VARIABLE INSURANCE TRUST - HIGH INCOME SERIES
       
<S>                             <C>
<PERIOD-TYPE>                   YEAR
<FISCAL-YEAR-END>                   DEC-31-1995
<PERIOD-END>                        DEC-31-1995
<INVESTMENTS-AT-COST>                    1,799,263
<INVESTMENTS-AT-VALUE>                   1,827,838
<RECEIVABLES>                               44,334
<ASSETS-OTHER>                               8,398
<OTHER-ITEMS-ASSETS>                        79,842
<TOTAL-ASSETS>                           1,960,412
<PAYABLE-FOR-SECURITIES>                         0
<SENIOR-LONG-TERM-DEBT>                          0
<OTHER-ITEMS-LIABILITIES>                   13,921
<TOTAL-LIABILITIES>                         13,921
<SENIOR-EQUITY>                                  0
<PAID-IN-CAPITAL-COMMON>                 1,920,119
<SHARES-COMMON-STOCK>                      189,145
<SHARES-COMMON-PRIOR>                          860
<ACCUMULATED-NII-CURRENT>                      355
<OVERDISTRIBUTION-NII>                           0
<ACCUMULATED-NET-GAINS>                      2,558
<OVERDISTRIBUTION-GAINS>                         0
<ACCUM-APPREC-OR-DEPREC>                    28,575
<NET-ASSETS>                             1,946,491
<DIVIDEND-INCOME>                                0
<INTEREST-INCOME>                           48,889
<OTHER-INCOME>                                   0
<EXPENSES-NET>                               5,327
<NET-INVESTMENT-INCOME>                     43,562
<REALIZED-GAINS-CURRENT>                     2,558
<APPREC-INCREASE-CURRENT>                   28,575
<NET-CHANGE-FROM-OPS>                       69,579
<EQUALIZATION>                                   0
<DISTRIBUTIONS-OF-INCOME>                   43,207
<DISTRIBUTIONS-OF-GAINS>                         0
<DISTRIBUTIONS-OTHER>                            0
<NUMBER-OF-SHARES-SOLD>                    197,072
<NUMBER-OF-SHARES-REDEEMED>                 12,998
<SHARES-REINVESTED>                          4,211
<NET-CHANGE-IN-ASSETS>                   1,937,891
<ACCUMULATED-NII-PRIOR>                          0
<ACCUMULATED-GAINS-PRIOR>                        0
<OVERDISTRIB-NII-PRIOR>                          0
<OVERDIST-NET-GAINS-PRIOR>                       0
<GROSS-ADVISORY-FEES>                        3,996
<INTEREST-EXPENSE>                               0
<GROSS-EXPENSE>                             23,331
<AVERAGE-NET-ASSETS>                     1,239,595
<PER-SHARE-NAV-BEGIN>                        10.00
<PER-SHARE-NII>                               0.34
<PER-SHARE-GAIN-APPREC>                       0.18
<PER-SHARE-DIVIDEND>                        (0.23)
<PER-SHARE-DISTRIBUTIONS>                     0.00
<RETURNS-OF-CAPITAL>                          0.00
<PER-SHARE-NAV-END>                          10.29
<EXPENSE-RATIO>                               1.00
<AVG-DEBT-OUTSTANDING>                           0
<AVG-DEBT-PER-SHARE>                             0
        



















































</TABLE>

<TABLE> <S> <C>

<PAGE>
<ARTICLE> 6
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
FINANCIAL STATEMENTS OF MFS VARIABLE INSURANCE TRUST - MONEY MARKET SERIES AND
IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
       
<S>                             <C>
<PERIOD-TYPE>                   YEAR
<FISCAL-YEAR-END>                          DEC-31-1995
<PERIOD-END>                               DEC-31-1995
<INVESTMENTS-AT-COST>                          169,649
<INVESTMENTS-AT-VALUE>                         169,649
<RECEIVABLES>                                    6,651
<ASSETS-OTHER>                                   7,377
<OTHER-ITEMS-ASSETS>                             9,606
<TOTAL-ASSETS>                                 193,283
<PAYABLE-FOR-SECURITIES>                             0
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                       13,149
<TOTAL-LIABILITIES>                             13,149
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                       180,134
<SHARES-COMMON-STOCK>                          180,134
<SHARES-COMMON-PRIOR>                            8,600
<ACCUMULATED-NII-CURRENT>                            0
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                              0
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                             0
<NET-ASSETS>                                   180,134
<DIVIDEND-INCOME>                                    0
<INTEREST-INCOME>                                6,136
<OTHER-INCOME>                                       0
<EXPENSES-NET>                                     713
<NET-INVESTMENT-INCOME>                          5,423
<REALIZED-GAINS-CURRENT>                             0
<APPREC-INCREASE-CURRENT>                            0
<NET-CHANGE-FROM-OPS>                            5,423
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                        5,423
<DISTRIBUTIONS-OF-GAINS>                             0
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                        290,633
<NUMBER-OF-SHARES-REDEEMED>                    124,420
<SHARES-REINVESTED>                              5,321
<NET-CHANGE-IN-ASSETS>                         171,534
<ACCUMULATED-NII-PRIOR>                              0
<ACCUMULATED-GAINS-PRIOR>                            0
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                              594
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                 25,728
<AVERAGE-NET-ASSETS>                           121,082
<PER-SHARE-NAV-BEGIN>                             1.00
<PER-SHARE-NII>                                   0.04
<PER-SHARE-GAIN-APPREC>                           0.00
<PER-SHARE-DIVIDEND>                            (0.04)
<PER-SHARE-DISTRIBUTIONS>                         0.00
<RETURNS-OF-CAPITAL>                              0.00
<PER-SHARE-NAV-END>                               1.00
<EXPENSE-RATIO>                                   0.60
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        

</TABLE>

<TABLE> <S> <C>

<PAGE>
<ARTICLE> 6
<LEGEND>
THIS  SCHEDULE  CONTAINS  SUMMARY  FINANCIAL   INFORMATION  EXTRACTED  FROM  THE
FINANCIAL  STATEMENTS OF MFS VARIABLE  INSURANCE  TRUST - RESEARCH SERIES AND IS
QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<SERIES>
   <NUMBER> 12
   <NAME> MFS VARIABLE INSURANCE TRUST - RESEARCH SERIES
       
<S>                             <C>
<PERIOD-TYPE>                   YEAR
<FISCAL-YEAR-END>                   DEC-31-1995
<PERIOD-END>                        DEC-31-1995
<INVESTMENTS-AT-COST>                    2,410,449
<INVESTMENTS-AT-VALUE>                   2,523,431
<RECEIVABLES>                               36,542
<ASSETS-OTHER>                               8,398
<OTHER-ITEMS-ASSETS>                        62,531
<TOTAL-ASSETS>                           2,631,236
<PAYABLE-FOR-SECURITIES>                    86,813
<SENIOR-LONG-TERM-DEBT>                          0
<OTHER-ITEMS-LIABILITIES>                   14,254
<TOTAL-LIABILITIES>                        101,067
<SENIOR-EQUITY>                                  0
<PAID-IN-CAPITAL-COMMON>                 2,417,438
<SHARES-COMMON-STOCK>                      232,411
<SHARES-COMMON-PRIOR>                          860
<ACCUMULATED-NII-CURRENT>                        0
<OVERDISTRIBUTION-NII>                           0
<ACCUMULATED-NET-GAINS>                          0
<OVERDISTRIBUTION-GAINS>                       252
<ACCUM-APPREC-OR-DEPREC>                   112,983
<NET-ASSETS>                             2,530,169
<DIVIDEND-INCOME>                            5,477
<INTEREST-INCOME>                            7,204
<OTHER-INCOME>                                  35
<EXPENSES-NET>                               5,897
<NET-INVESTMENT-INCOME>                      6,749
<REALIZED-GAINS-CURRENT>                    31,088
<APPREC-INCREASE-CURRENT>                  112,983
<NET-CHANGE-FROM-OPS>                      150,820
<EQUALIZATION>                                   0
<DISTRIBUTIONS-OF-INCOME>                    6,793
<DISTRIBUTIONS-OF-GAINS>                    31,296
<DISTRIBUTIONS-OTHER>                            0
<NUMBER-OF-SHARES-SOLD>                    238,822
<NUMBER-OF-SHARES-REDEEMED>                 10,792
<SHARES-REINVESTED>                          3,521
<NET-CHANGE-IN-ASSETS>                   2,521,569
<ACCUMULATED-NII-PRIOR>                          0
<ACCUMULATED-GAINS-PRIOR>                        0
<OVERDISTRIB-NII-PRIOR>                          0
<OVERDIST-NET-GAINS-PRIOR>                       0
<GROSS-ADVISORY-FEES>                        4,424
<INTEREST-EXPENSE>                               0
<GROSS-EXPENSE>                             22,933
<AVERAGE-NET-ASSETS>                     1,367,696
<PER-SHARE-NAV-BEGIN>                        10.00
<PER-SHARE-NII>                               0.05
<PER-SHARE-GAIN-APPREC>                       1.01
<PER-SHARE-DIVIDEND>                        (0.17)
<PER-SHARE-DISTRIBUTIONS>                   (0.14)
<RETURNS-OF-CAPITAL>                          0.00
<PER-SHARE-NAV-END>                          10.55
<EXPENSE-RATIO>                               1.00
<AVG-DEBT-OUTSTANDING>                           0
<AVG-DEBT-PER-SHARE>                             0
        




























</TABLE>

<TABLE> <S> <C>

<PAGE>
<ARTICLE> 6
<LEGEND>
THIS  SCHEDULE  CONTAINS  SUMMARY  FINANCIAL   INFORMATION  EXTRACTED  FROM  THE
FINANCIAL  STATEMENTS OF MFS VARIABLE  INSURANCE TRUST - TOTAL RETURN SERIES AND
IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<SERIES>
   <NUMBER> 2
   <NAME> MFS VARIABLE INSURANCE TRUST - TOTAL RETURN
          SERIES
       
<S>                             <C>
<PERIOD-TYPE>                   YEAR
<FISCAL-YEAR-END>                   DEC-31-1995
<PERIOD-END>                        DEC-31-1995
<INVESTMENTS-AT-COST>                    2,481,162
<INVESTMENTS-AT-VALUE>                   2,731,906
<RECEIVABLES>                               27,512
<ASSETS-OTHER>                               7,377
<OTHER-ITEMS-ASSETS>                        66,044
<TOTAL-ASSETS>                           2,832,839
<PAYABLE-FOR-SECURITIES>                    21,446
<SENIOR-LONG-TERM-DEBT>                          0
<OTHER-ITEMS-LIABILITIES>                   14,323
<TOTAL-LIABILITIES>                         35,769
<SENIOR-EQUITY>                                  0
<PAID-IN-CAPITAL-COMMON>                 2,545,202
<SHARES-COMMON-STOCK>                      228,254
<SHARES-COMMON-PRIOR>                          860
<ACCUMULATED-NII-CURRENT>                    1,138
<OVERDISTRIBUTION-NII>                           0
<ACCUMULATED-NET-GAINS>                         14
<OVERDISTRIBUTION-GAINS>                         0
<ACCUM-APPREC-OR-DEPREC>                   250,744
<NET-ASSETS>                             2,797,070
<DIVIDEND-INCOME>                           27,350
<INTEREST-INCOME>                           42,436
<OTHER-INCOME>                                  62
<EXPENSES-NET>                              14,434
<NET-INVESTMENT-INCOME>                     55,290
<REALIZED-GAINS-CURRENT>                    50,806
<APPREC-INCREASE-CURRENT>                  250,744
<NET-CHANGE-FROM-OPS>                      356,840
<EQUALIZATION>                                   0
<DISTRIBUTIONS-OF-INCOME>                   54,166
<DISTRIBUTIONS-OF-GAINS>                    50,806
<DISTRIBUTIONS-OTHER>                            0
<NUMBER-OF-SHARES-SOLD>                    333,436
<NUMBER-OF-SHARES-REDEEMED>                114,653
<SHARES-REINVESTED>                          8,611
<NET-CHANGE-IN-ASSETS>                   2,788,470
<ACCUMULATED-NII-PRIOR>                          0
<ACCUMULATED-GAINS-PRIOR>                        0
<OVERDISTRIB-NII-PRIOR>                          0
<OVERDIST-NET-GAINS-PRIOR>                       0
<GROSS-ADVISORY-FEES>                       10,826
<INTEREST-EXPENSE>                               0
<GROSS-EXPENSE>                             39,940
<AVERAGE-NET-ASSETS>                     1,463,148
<PER-SHARE-NAV-BEGIN>                        10.00
<PER-SHARE-NII>                               0.41
<PER-SHARE-GAIN-APPREC>                       2.32
<PER-SHARE-DIVIDEND>                        (0.25)
<PER-SHARE-DISTRIBUTIONS>                   (0.23)
<RETURNS-OF-CAPITAL>                          0.00
<PER-SHARE-NAV-END>                          12.25
<EXPENSE-RATIO>                               1.00
<AVG-DEBT-OUTSTANDING>                           0
<AVG-DEBT-PER-SHARE>                             0
        





</TABLE>

<TABLE> <S> <C>

<PAGE>
<ARTICLE> 6
<LEGEND>
THIS  SCHEDULE  CONTAINS  SUMMARY  FINANCIAL   INFORMATION  EXTRACTED  FROM  THE
FINANCIAL  STATEMENTS OF MFS VARIABLE  INSURANCE TRUST - UTILITIES SERIES AND IS
QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<SERIES>
   <NUMBER> 3
   <NAME> MFS VARIABLE INSURANCE TRUST - UTILITIES SERIES
       
<S>                             <C>
<PERIOD-TYPE>                   YEAR
<FISCAL-YEAR-END>                   DEC-31-1995
<PERIOD-END>                        DEC-31-1995
<INVESTMENTS-AT-COST>                   2,274,227
<INVESTMENTS-AT-VALUE>                  2,510,297
<RECEIVABLES>                              44,559
<ASSETS-OTHER>                              7,377
<OTHER-ITEMS-ASSETS>                       38,731
<TOTAL-ASSETS>                          2,601,130
<PAYABLE-FOR-SECURITIES>                  213,727
<SENIOR-LONG-TERM-DEBT>                         0
<OTHER-ITEMS-LIABILITIES>                  14,234
<TOTAL-LIABILITIES>                       227,961
<SENIOR-EQUITY>                                 0
<PAID-IN-CAPITAL-COMMON>                2,131,211
<SHARES-COMMON-STOCK>                     188,778
<SHARES-COMMON-PRIOR>                         860
<ACCUMULATED-NII-CURRENT>                   3,095
<OVERDISTRIBUTION-NII>                          0
<ACCUMULATED-NET-GAINS>                     2,871
<OVERDISTRIBUTION-GAINS>                        0
<ACCUM-APPREC-OR-DEPREC>                  235,992
<NET-ASSETS>                            2,373,169
<DIVIDEND-INCOME>                          53,080
<INTEREST-INCOME>                           6,604
<OTHER-INCOME>                            (1,497)
<EXPENSES-NET>                             12,502
<NET-INVESTMENT-INCOME>                    45,685
<REALIZED-GAINS-CURRENT>                  103,820
<APPREC-INCREASE-CURRENT>                 235,992
<NET-CHANGE-FROM-OPS>                     385,497
<EQUALIZATION>                                  0
<DISTRIBUTIONS-OF-INCOME>                  42,590
<DISTRIBUTIONS-OF-GAINS>                  100,949
<DISTRIBUTIONS-OTHER>                           0
<NUMBER-OF-SHARES-SOLD>                   322,691
<NUMBER-OF-SHARES-REDEEMED>             (146,236)
<SHARES-REINVESTED>                        11,463
<NET-CHANGE-IN-ASSETS>                  2,364,569
<ACCUMULATED-NII-PRIOR>                         0
<ACCUMULATED-GAINS-PRIOR>                       0
<OVERDISTRIB-NII-PRIOR>                         0
<OVERDIST-NET-GAINS-PRIOR>                      0
<GROSS-ADVISORY-FEES>                       9,376
<INTEREST-EXPENSE>                              0
<GROSS-EXPENSE>                            38,364
<AVERAGE-NET-ASSETS>                    1,264,077
<PER-SHARE-NAV-BEGIN>                       10.00
<PER-SHARE-NII>                              0.39
<PER-SHARE-GAIN-APPREC>                      3.00
<PER-SHARE-DIVIDEND>                        (0.24)
<PER-SHARE-DISTRIBUTIONS>                   (0.58)
<RETURNS-OF-CAPITAL>                         0.00
<PER-SHARE-NAV-END>                         12.57
<EXPENSE-RATIO>                              1.00
<AVG-DEBT-OUTSTANDING>                          0
<AVG-DEBT-PER-SHARE>                            0
        








</TABLE>

<TABLE> <S> <C>

<PAGE>
<ARTICLE> 6
<LEGEND>
THIS  SCHEDULE  CONTAINS  SUMMARY  FINANCIAL   INFORMATION  EXTRACTED  FROM  THE
FINANCIAL  STATEMENTS OF MFS VARIABLE INSURANCE TRUST - WORLD GOVERNMENTS SERIES
AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<SERIES>
   <NUMBER> 1
   <NAME> MFS VARIABLE INSURANCE TRUST - WORLD
          GOVERNMENTS SERIES
       
<S>                             <C>
<PERIOD-TYPE>                    YEAR
<FISCAL-YEAR-END>                   DEC-31-1995
<PERIOD-END>                        DEC-31-1995
<INVESTMENTS-AT-COST>                   7,475,454
<INVESTMENTS-AT-VALUE>                  7,609,195
<RECEIVABLES>                             293,969
<ASSETS-OTHER>                              3,848
<OTHER-ITEMS-ASSETS>                        3,897
<TOTAL-ASSETS>                          7,910,909
<PAYABLE-FOR-SECURITIES>                  102,727
<SENIOR-LONG-TERM-DEBT>                         0
<OTHER-ITEMS-LIABILITIES>                 384,541
<TOTAL-LIABILITIES>                       487,268
<SENIOR-EQUITY>                                 0
<PAID-IN-CAPITAL-COMMON>                7,513,625
<SHARES-COMMON-STOCK>                     729,602
<SHARES-COMMON-PRIOR>                     293,306
<ACCUMULATED-NII-CURRENT>                       0
<OVERDISTRIBUTION-NII>                    166,765
<ACCUMULATED-NET-GAINS>                 (162,554)
<OVERDISTRIBUTION-GAINS>                        0
<ACCUM-APPREC-OR-DEPREC>                 (94,195)
<NET-ASSETS>                            7,423,641
<DIVIDEND-INCOME>                               0
<INTEREST-INCOME>                         317,511
<OTHER-INCOME>                                  0
<EXPENSES-NET>                             45,158
<NET-INVESTMENT-INCOME>                   272,353
<REALIZED-GAINS-CURRENT>                  398,163
<APPREC-INCREASE-CURRENT>                       0
<NET-CHANGE-FROM-OPS>                     670,516
<EQUALIZATION>                                  0
<DISTRIBUTIONS-OF-INCOME>                 692,999
<DISTRIBUTIONS-OF-GAINS>                        0
<DISTRIBUTIONS-OTHER>                           0
<NUMBER-OF-SHARES-SOLD>                   861,022
<NUMBER-OF-SHARES-REDEEMED>             (493,000)
<SHARES-REINVESTED>                        68,274
<NET-CHANGE-IN-ASSETS>                  4,542,392
<ACCUMULATED-NII-PRIOR>                         0
<ACCUMULATED-GAINS-PRIOR>                       0
<OVERDISTRIB-NII-PRIOR>                    26,056
<OVERDIST-NET-GAINS-PRIOR>               (11,035)
<GROSS-ADVISORY-FEES>                      33,869
<INTEREST-EXPENSE>                              0
<GROSS-EXPENSE>                            89,612
<AVERAGE-NET-ASSETS>                    4,500,914
<PER-SHARE-NAV-BEGIN>                        9.82
<PER-SHARE-NII>                              0.63
<PER-SHARE-GAIN-APPREC>                      0.78
<PER-SHARE-DIVIDEND>                         1.41
<PER-SHARE-DISTRIBUTIONS>                    0.42
<RETURNS-OF-CAPITAL>                         0.10
<PER-SHARE-NAV-END>                         10.17
<EXPENSE-RATIO>                              1.00
<AVG-DEBT-OUTSTANDING>                          0
<AVG-DEBT-PER-SHARE>                            0
        















</TABLE>


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