FBL VARIABLE INSURANCE SERIES FUND
N-30B-2, 1997-02-28
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<PAGE>
                                                           -----------------
                                                            Farm Bureau
                                                              Financial Services
 
                                            FBL Variable Insurance
                                            Series Fund
 
                                                                          [LOGO]
 
                                            ANNUAL REPORT
                                            DECEMBER 31, 1996
                                            INVESTMENT MANAGER AND
                                            PRINCIPAL UNDERWRITER
                                            FBL INVESTMENT ADVISORY
                                            SERVICES, INC.
                                            5400 UNIVERSITY AVENUE
                                            WEST DES MOINES, IA 50266
                                            1-800-247-4170 (OUTSIDE IOWA)
                                            1-800-422-3175 (IN IOWA)
                                                 225-5586 (DES MOINES)
 
   FARM BUREAU LIFE
   INSURANCE COMPANY
   FARM BUREAU
   MUTUAL FUNDS
   5400 UNIVERSITY
   AVENUE                [LOGO]
   WEST DES MOINES,           This  report  is  not  to  be  distributed  unless
   IOWA 50266            [LOGO] preceded or accompanied by a prospectus.
 
   737-525 (96)
<PAGE>
PRESIDENT'S LETTER
 
Dear Shareholder,
 
    1996 was a good year - better than expected on almost every front: inflation
surprises  were on the downside, unemployment was  very low and bond yields rose
substantially (even though well off the yearly highs). All seems to be well, but
we do wonder why personal bankruptcies are at record levels.
 
    The equity markets continue  to confound the  few remaining bears,  reaching
unprecedented  levels by most valuation markers. The month of November witnessed
the most remarkable  stock market action  in the  memory of mankind  as the  Dow
Jones  Industrial Average (DJIA) gained 8.2% in valuation. This surge capped-off
an otherwise strong year, which  also came on the  heels of a powerful  (+37.4%)
1995  performance. Consecutive  years of  such strong  equity market performance
have been  historically  infrequent, and  subsequent  years have  tended  to  be
subpar.  But as  this market cycle  has broken  every other rule,  who would bet
against it in 1997?
 
    Our greatest concern is, and has  been, related to the expectations of  this
bull   market's  participants.  That   the  average  mutual   fund  investor  is
anticipating a continuation  of returns  in excess  of long-term  norms is  well
documented.  It's not that these folks  shouldn't own equity funds, they should.
However, they should own  equities with an awareness  of how market  performance
tends to regress toward its long-term mean and what that may imply for them.
 
    The  S&P 500 produced  a total return of  over 16% per  year for the 15-year
period ended December 31, 1964. Expectations  then, like now, ran high. For  the
subsequent  15 years  ending December  31, 1979, the  S&P generated  only a 5.6%
compounded annual return. Even  that performance didn't make  you a fool to  own
stocks;  stocks still outperformed bonds over  the 15-year period. But such weak
results probably spoiled some plans for early retirement.
 
    At the beginning of 1965, the "long-term" (dating back to 1926)  performance
record  for stocks was  10.4%, today it  is 10.7%. By  underperforming (at times
painfully) in the late '60s and through the '70s, the market regressed from  16%
back toward the "roughly 10%" mean.
 
    Today,  stocks still make sense for the  true long-term investor, but if you
are counting on a continuation of the  16%+ average over the past fifteen  years
to  make your retirement plan work, you may  want to review your budget and look
for ways to increase your annual  contributions. If returns stay strong,  that's
great. But it may be safer to plan for a more tepid pace of growth.
 
    We  urge  you to  make your  asset allocation  decisions based  on long-term
market averages, not on recent  history (contact your registered  representative
for  a copy  of our  "Keys to Investing"  brochure). Mutual  fund investors have
largely ignored bonds over the past few years. Perhaps, you should also consider
the risk reduction  benefits utilizing fixed-income  securities, including  high
yield  bonds, which offer unique diversification characteristics (relatively low
correlation with either stocks or high quality bonds).
 
    For the  actively  managed FBL  Variable  Insurance Series  Fund  portfolios
(other than the passive Blue Chip Portfolio) we constantly assess the securities
held to ensure that valuations are reasonable. In
 
                                       2
<PAGE>
so  doing, we  seek to produce  attractive risk-adjusted  performance and create
lasting value for our shareholders. The following paragraphs describe how we are
currently striking a balance between risk  and potential return for the  various
portfolios:
 
    VALUE  GROWTH:  The Value Growth Portfolio benefitted from its above-average
exposure to  the financial  sector. Portfolio  gains  were led  by many  of  our
financial  holdings such as General Growth  Properties, a real estate investment
trust, and our overweighted positions  in the following bank stocks:  Centennial
Bancorp,  CU Bancorp  and Community  First Bankshares.  These stocks represented
approximately 15% of  the portfolio assets.  We continue to  favor smaller  bank
holding  companies that are likely to  benefit from the merger and consolidation
activity in this industry.  Also, we have added  to our positions in  healthcare
(R.P.  Scherer) and convenience stores (Casey's  General Stores). Our goal is to
be invested in stocks which have  appreciation potential at an acceptable  level
of risk.
 
    HIGH  GRADE BOND:  U.S. Treasury yields increased dramatically over the past
year. For  example, the  2-year,  10-year and  30-year Treasury  issues  yielded
5.15%,  5.57%  and 5.95%,  respectively,  as of  December  29, 1995,  but  as of
December 31, 1996, were 5.87%, 6.42% and 6.64%.
 
    In addition, corporate spreads remain at historically low levels, suggesting
that investors  are not  being well  compensated for  taking on  the credit  and
market  risk inherent in corporate bonds. Because of this, we will probably look
to reduce the Portfolio's overall exposure  to corporate bonds and increase  its
holdings in mortgage-backed and/or Treasury issues.
 
    The  Portfolio  continues to  hold a  significant portion  of its  assets in
high-coupon, callable bonds that  offer attractive, incremental yields  relative
to  similar  non-callable issues.  Due to  their call  features, these  types of
corporate issues  tend to  go up  in price  less than  non-callable issues  when
interest  rates drop; and conversely, due to their incremental yield, tend to go
down less than non-callable issues  when interest rates rise. Portfolio  returns
should continue to lag other, more aggressive funds in both up and down markets.
 
    HIGH  YIELD  BOND:    During  the past  year,  the  high  yield  bond market
outperformed the high grade corporate bond market.
 
    Fundamental and technical  factors both worked  in favor of  the high  yield
bond  market over the  course of the  year. On the  fundamental side, an overall
healthy economy and improvement in overall  market credit quality resulted in  a
very  low rate of actual defaults in the  high yield bond market during 1996. On
the technical side, an increased demand for high yield issues allowed the market
to easily absorb new issuance, which has  resulted in a narrowing of the  spread
on high yield issues.
 
    At  the  present  time, the  yield  pick-up  on high  yield  issues  is near
historically low  levels, which  means there  is little  cushion to  absorb  any
potential  negative surprises that may occur in this market. Because of this, we
feel a more aggressive stance is not  prudent at this time, and the  composition
of the Portfolio will probably not be dramatically altered going forward.
 
    MANAGED:   The Managed Portfolio continues  to seek securities offering high
income with modest growth potential. This Portfolio uses a value philosophy, but
concentrates on securities which produce an income stream twice that of the  S&P
500.  Currently, the  S&P 500  is yielding a  minuscule 1.9%.  We achieve higher
income by investing  in a  mixture of high  dividend-paying stocks,  preferreds,
convertibles and corporate bonds.
 
    We  have  added to  our  convertible securities  in  the banking  sector. We
continue to find  value in  owning the  convertible securities  of smaller  bank
holding companies, as these securities are available
 
                                       3
<PAGE>
with current yields ranging from 4% - 6%, in addition to their attractive upside
potential.  Our overweighted positions  in General Growth  Properties (REIT) and
U.S. Surgical (healthcare) have aided portfolio performance as these stocks have
recently made  new  highs.  We  continue to  seek  out  lower-risk,  high-return
investment opportunities.
 
    MONEY  MARKET:   During  1996,  the money  markets  played out  a  number of
scenarios based  on expectations  of what  the  Fed would  do. In  January,  the
Federal Reserve eased the Fed funds rate 25 basis points, and it was anticipated
we would see another easing in the spring. However, as strong employment numbers
were  released, the  markets expected  the Fed to  increase rates  at its August
meeting. The Fed held firm in August and has continued to hold steady throughout
the fall. Apparently, the Fed feels the U.S. economy is doing fine, despite  the
markets' gyrations over expectations.
 
    BLUE  CHIP:  True to its passive  strategy, the performance of the Blue Chip
Portfolio over the  past year  has reflected  that of  the large  capitalization
market  sector which it represents. The Blue  Chip Portfolio will, at all times,
remain  substantially  invested  in  common  stocks  of  large  companies.  This
Portfolio  is designed  for those investors  who prefer  substantial exposure to
common stocks  at  all  times, or  who  wish  to make  their  own  market  value
judgments.
 
                                          [INSERT "SPECIMAN SIGNATURE"]
                                           EDWARD M. WIEDERSTEIN
                                           PRESIDENT
 
February 18, 1997
 
                                       4
<PAGE>
MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE
 
VALUE GROWTH PORTFOLIO
 
              COMPARISON OF CHANGE IN VALUE OF $10,000 INVESTMENT
                   IN THE VALUE GROWTH PORTFOLIO AND S&P 500
 
EDGAR REPRESENTATION OF DATA POINTS USED IN PRINTED GRAPHIC
 
<TABLE>
<CAPTION>
                                                          VALUE GROWTH PORTFOLIO     S&P 500 STOCK COMPOSITE INDEX
<S>                                                       <C>                      <C>
11/01/87                                                                 $ 10,000                           $ 10,000
12/31/87                                                                  $ 9,768                            $ 9,859
12/31/88                                                                 $ 11,102                           $ 11,516
12/31/89                                                                 $ 12,337                           $ 15,142
12/31/90                                                                 $ 12,911                           $ 14,662
12/31/91                                                                 $ 14,787                           $ 19,141
12/31/92                                                                 $ 16,333                           $ 20,608
12/31/93                                                                 $ 20,775                           $ 22,687
12/31/94                                                                 $ 19,855                           $ 22,982
12/31/95                                                                 $ 24,992                           $ 31,609
12/31/96                                                                 $ 29,403                           $ 38,872
*The Portfolio commenced operations October 15, 1987.
Past performance is not predictive of future performace.
Average Annual Total Return
1 year                                                                     5 year                 Life of Portfolio*
17.65%                                                                     14.74%                              9.53%
</TABLE>
 
    For  the twelve-month period  ended December 31, 1996,  the total return for
the Value  Growth Portfolio  was  17.65% compared  to  the 22.98%  total  return
(income  and price appreciation) produced by  the S&P 500 Stock Composite Index.
While we are  pleased with  the absolute performance  of the  Portfolio, we  are
disappointed  about  the relative  performance as  compared to  the S&P  500. We
presume this  difference  is  largely due  to  the  stellar year  of  the  large
capitalization  sector, which is  unsustainably high and  could be vulnerable to
substantial setbacks. The Value Growth Portfolio is heavily weighted to  smaller
capitalization  stocks which have been somewhat left behind by the recent market
advance.  The  Portfolio  achieved  its  returns  in  the  energy,  banking  and
technology  sectors, and  remains committed  to the  undervalued sectors  of the
market. Long-term, we believe value investing (buying the stocks of companies at
a discount to their true  business value) will be  attractive at a reduced  risk
level.  Cash is likely to  accumulate as we sell those  positions that are at or
above those  intrinsic  business  values.  We  are  patiently  awaiting  further
investment opportunities brought about by the markets' myopic behavior.
 
                                       5
<PAGE>
HIGH GRADE BOND PORTFOLIO
 
     COMPARISON OF CHANGE IN VALUE OF $10,000 INVESTMENT IN THE HIGH GRADE
         BOND PORTFOLIO AND LEHMAN BROTHERS MUTUAL FUND AGGREGATE INDEX
EDGAR REPRESENTATION OF DATA POINTS USED IN PRINTED GRAPHIC
 
<TABLE>
<CAPTION>
                                                            HIGH GRADE BOND PORTFOLIO
<S>                                                        <C>                        <C>
11/01/87                                                                      $ 10,000
12/31/87                                                                      $ 10,251
12/31/88                                                                      $ 10,976
12/31/89                                                                      $ 12,375
12/31/90                                                                      $ 13,471
12/31/91                                                                      $ 15,682
12/31/92                                                                      $ 16,999
12/31/93                                                                      $ 18,485
12/31/94                                                                      $ 18,438
12/31/95                                                                      $ 21,066
12/31/96                                                                      $ 22,317
*The Portfolio commenced operations October 15, 1987.
Past performance is not predictive of future performance.
Average Annual Total Return
1 year                                                                          5 year
5.94%                                                                            7.31%
 
<CAPTION>
                                                             LEHMAN BROTHERS MUTUAL FUND AGGREGATE INDEX
 
<S>                                                        <C>
11/01/87                                                                                          $ 10,000
 
12/31/87                                                                                          $ 10,217
 
12/31/88                                                                                          $ 11,022
 
12/31/89                                                                                          $ 12,623
 
12/31/90                                                                                          $ 13,753
 
12/31/91                                                                                          $ 15,953
 
12/31/92                                                                                          $ 17,136
 
12/31/93                                                                                          $ 18,807
 
12/31/94                                                                                          $ 18,258
 
12/31/95                                                                                          $ 21,630
 
12/31/96                                                                                          $ 22,415
 
*The Portfolio commenced operations October 15, 1987.
Past performance is not predictive of future performance.
Average Annual Total Return
1 year                                                                                  Life of Portfolio*
 
5.94%                                                                                                9.54%
 
</TABLE>
 
    During  the twelve-month period ended December 31, 1996, the High Grade Bond
Portfolio outperformed  the  Lehman Brothers  Mutual  Fund Aggregate  Index,  as
reflected  by the 5.94% total return produced  by the Portfolio versus the 3.63%
return produced by the Lehman Brothers Aggregate Index. The Portfolio  continued
to  pursue an  investment strategy of  holding a large  position in high-coupon,
callable bonds. These bonds generally offer additional yield for taking on  call
risk  and  allow  for a  more  stable  return to  the  Portfolio.  Because these
securities have a call feature,  they tend to underperform similar  non-callable
issues   when  interest  rates  go  down,  and  conversely,  outperform  similar
non-callable issues when interest rates rise.
 
                                       6
<PAGE>
HIGH YIELD BOND PORTFOLIO
 
   COMPARISON OF CHANGE IN VALUE OF $10,000 INVESTMENT IN THE HIGH YIELD BOND
      PORTFOLIO AND LEHMAN BROTHERS MUTUAL FUND CORPORATE/HIGH YIELD INDEX
EDGAR REPRESENTATION OF DATA POINTS USED IN PRINTED GRAPHIC
 
<TABLE>
<CAPTION>
                                                           HIGH YIELD BOND PORTFOLIO
<S>                                                        <C>                       <C>
11/01/87                                                                     $ 10,000
12/31/87                                                                     $ 10,545
12/31/88                                                                     $ 11,803
12/31/89                                                                     $ 12,757
12/31/90                                                                     $ 12,842
12/31/91                                                                     $ 16,372
12/31/92                                                                     $ 18,565
12/31/93                                                                     $ 21,533
12/31/94                                                                     $ 21,316
12/31/95                                                                     $ 24,544
12/31/96                                                                     $ 27,649
*The Portfolio commenced operations October 15, 1987.
Past performance is not predictive of future performance.
Average Annual Total Return
1 year                                                                         5 year
12.65%                                                                         11.05%
 
<CAPTION>
                                                            LEHMAN BROTHERS MUTUAL CORPORATE/HIGH YIELD INDEX
 
<S>                                                        <C>
11/01/87                                                                                               $ 10,000
 
12/31/87                                                                                               $ 10,322
 
12/31/88                                                                                               $ 11,308
 
12/31/89                                                                                               $ 12,724
 
12/31/90                                                                                               $ 13,423
 
12/31/91                                                                                               $ 16,195
 
12/31/92                                                                                               $ 17,708
 
12/31/93                                                                                               $ 19,981
 
12/31/94                                                                                               $ 19,292
 
12/31/95                                                                                               $ 23,484
 
12/31/96                                                                                               $ 24,588
 
*The Portfolio commenced operations October 15, 1987.
Past performance is not predictive of future performance.
Average Annual Total Return
1 year                                                                                       Life of Portfolio*
 
12.65%                                                                                                   11.53%
 
</TABLE>
 
    For the twelve-month period ended December 31, 1996, the 12.65% total return
produced  by the  High Yield  Bond Portfolio was  greater than  the 4.70% return
produced by  the Lehman  Brothers Mutual  Fund Corporate/High  Yield Index.  The
Portfolio  maintains a larger percentage of  its investments in high yield bonds
than the Lehman  Brothers Corporate/High Yield  Index and during  the year,  the
high  yield market tended to outperform the high grade corporate bond market. In
addition, the Portfolio continued to hold a substantial portion of its assets in
high-coupon, premium-priced  callable bonds,  which generally  offer  additional
yield  for  taking on  call  risk and  allow  for a  more  stable return  to the
Portfolio.  Because  these  securities  have  a  call  feature,  they  tend   to
underperform  similar  non-callable  issues  when interest  rates  go  down, and
conversely, outperform similar non-callable issues when interest rates rise.
 
                                       7
<PAGE>
MANAGED PORTFOLIO
 
              COMPARISON OF CHANGE IN VALUE OF $10,000 INVESTMENT
                      IN THE MANAGED PORTFOLIO AND S&P 500
 
EDGAR REPRESENTATION OF DATA POINTS USED IN PRINTED GRAPHIC
 
<TABLE>
<CAPTION>
                                                            MANAGED PORTFOLIO     S&P 500 STOCK COMPOSITE INDEX
<S>                                                        <C>                  <C>
11/01/87                                                              $ 10,000                           $ 10,000
12/31/87                                                               $ 9,992                            $ 9,859
12/31/88                                                              $ 10,785                           $ 11,516
12/31/89                                                              $ 11,740                           $ 15,142
12/31/90                                                              $ 12,696                           $ 14,662
12/31/91                                                              $ 14,308                           $ 19,141
12/31/92                                                              $ 16,556                           $ 20,608
12/31/93                                                              $ 20,316                           $ 22,687
12/31/94                                                              $ 19,309                           $ 22,982
12/31/95                                                              $ 24,270                           $ 31,609
12/31/96                                                              $ 28,490                           $ 38,872
*The Portfolio commenced operations October 15, 1987.
Past performance is not predictive of future performance.
Average Annual Total Return
1 year                                                                  5 year                 Life of Portfolio*
17.39%                                                                  14.77%                             11.69%
</TABLE>
 
    The  Managed Portfolio is an asset allocation portfolio, with an emphasis on
income, and will not likely mirror any particular index (equity or fixed-income)
over time. During the twelve-month period ended December 31, 1996, the Portfolio
produced a total return  of 17.39% compared to  the 22.98% total return  (income
and  price  appreciation) produced  by the  S&P 500  Stock Composite  Index. The
Managed  Portfolio  has  emphasized  securities  producing  current  income  and
moderate  growth potential, maintaining a majority  of its assets in convertible
bonds and convertible preferred stocks. The Portfolio is largely represented  by
high-income  common stocks  and convertibles  of the  following industry groups:
banking, energy and utilities. The Managed  Portfolio will continue to seek  out
high  income, concentrating on convertible issues of smaller banking situations.
We believe this is a fertile investment area  where we are paid to wait for  the
profitable  experience  created by  ongoing  mergers and  consolidations  in the
banking industry.  This is  a lower  risk  strategy that  takes advantage  of  a
distinct long-term financial trend.
 
    The Managed Portfolio benefitted from the good performance of General Growth
Properties   (shopping  mall  REIT),  U.S.  Surgical  Conv.  Pfd.  (healthcare),
Centennial Bancorp (banking), Pride Petroleum (oil services) and Community First
Bankshares (banking).
 
                                       8
<PAGE>
BLUE CHIP PORTFOLIO
 
              COMPARISON OF CHANGE IN VALUE OF $10,000 INVESTMENT
                     IN THE BLUE CHIP PORTFOLIO AND S&P 500
 
EDGAR REPRESENTATION OF DATA POINTS USED IN PRINTED GRAPHIC
 
<TABLE>
<CAPTION>
                                                           BLUE CHIP PORTFOLIO     S&P 500 STOCK COMPOSITE INDEX
<S>                                                        <C>                   <C>
11/01/90                                                               $ 10,000                           $ 10,000
12/31/90                                                               $ 10,902                           $ 10,936
12/31/91                                                               $ 13,976                           $ 14,276
12/31/92                                                               $ 15,427                           $ 15,371
12/31/93                                                               $ 17,643                           $ 16,922
12/31/94                                                               $ 18,110                           $ 17,142
12/31/95                                                               $ 24,052                           $ 23,577
12/31/96                                                               $ 29,206                           $ 28,995
*The Portfolio commenced operations October 15, 1990.
Past performance is not predictive of future performance.
Average Annual Total Return
1 year                                                                   5 year                 Life of Portfolio*
21.43%                                                                   15.88%                             18.31%
</TABLE>
 
    The  Blue Chip Portfolio  is designed to  represent the large capitalization
sector of  the domestic  equity  market and  remains substantially  invested  in
approximately  40  such  common  stock issues  at  all  times.  Accordingly, the
performance of  this Portfolio  will  roughly parallel  that  of the  Dow  Jones
Industrial  Average and S&P 500  Stock Composite Index. As  is apparent from the
line graph, the performance of the  Blue Chip Portfolio, adjusted for  expenses,
was  similar to that of  the S&P 500 for  the twelve-month period ended December
31, 1996.
 
                                       9
<PAGE>
FBL VARIABLE INSURANCE SERIES FUND
STATEMENTS OF ASSETS AND LIABILITIES
DECEMBER 31, 1996
 
<TABLE>
<CAPTION>
                                                                                                  HIGH
                                                                              VALUE GROWTH     GRADE BOND
                                                                                PORTFOLIO       PORTFOLIO
                                                                             ---------------  -------------
<S>                                                                          <C>              <C>
ASSETS
Investments in securities, at value (cost -- $24,655,467; $3,336,263;         $  27,009,388   $   3,431,155
  $5,864,383; $24,392,613; $3,518,021; and $10,947,538, respectively) (NOTE
  5).......................................................................
Cash.......................................................................         118,322          48,506
Accrued dividends and interest receivable..................................          67,391          60,066
                                                                             ---------------  -------------
Total Assets...............................................................   $  27,195,101   $   3,539,727
                                                                             ---------------  -------------
                                                                             ---------------  -------------
LIABILITIES AND NET ASSETS
Liabilities:
  Net outstanding redemptions in excess of bank balances...................
  Accrued expenses.........................................................   $       6,650   $       5,172
                                                                             ---------------  -------------
Total Liabilities..........................................................           6,650           5,172
Net assets applicable to shares of beneficial interest (NOTE 4)............      27,188,451       3,534,555
                                                                             ---------------  -------------
Total Liabilities and Net Assets...........................................   $  27,195,101   $   3,539,727
                                                                             ---------------  -------------
                                                                             ---------------  -------------
Shares issued and outstanding as of December 31, 1996......................       2,070,769         359,602
NET ASSET VALUE PER SHARE..................................................   $       13.13   $        9.83
                                                                             ---------------  -------------
                                                                             ---------------  -------------
</TABLE>
 
SEE ACCOMPANYING NOTES.
 
                                       10
<PAGE>
 
<TABLE>
<CAPTION>
    HIGH
 YIELD BOND       MANAGED       MONEY MARKET     BLUE CHIP
  PORTFOLIO      PORTFOLIO       PORTFOLIO       PORTFOLIO
- -------------  --------------  --------------  --------------
<S>            <C>             <C>             <C>
 
$   5,965,631  $   25,783,455   $  3,518,021   $   14,487,018
                      160,597        303,867
      134,433          84,681          2,852           22,757
- -------------  --------------  --------------  --------------
$   6,100,064  $   26,028,733   $  3,824,740   $   14,509,775
- -------------  --------------  --------------  --------------
- -------------  --------------  --------------  --------------
$     165,719                                  $        9,439
        5,253  $        6,458   $      5,479            7,219
- -------------  --------------  --------------  --------------
      170,972           6,458          5,479           16,658
    5,929,092      26,022,275      3,819,261       14,493,117
- -------------  --------------  --------------  --------------
$   6,100,064  $   26,028,733   $  3,824,740   $   14,509,775
- -------------  --------------  --------------  --------------
- -------------  --------------  --------------  --------------
      598,413       2,099,227      3,819,261          587,306
$        9.91  $        12.40  $        1.00   $        24.68
- -------------  --------------  --------------  --------------
- -------------  --------------  --------------  --------------
</TABLE>
 
                                       11
<PAGE>
FBL VARIABLE INSURANCE SERIES FUND
STATEMENTS OF OPERATIONS
YEAR ENDED DECEMBER 31, 1996
 
<TABLE>
<CAPTION>
                                                                             VALUE           HIGH
                                                                            GROWTH        GRADE BOND
                                                                           PORTFOLIO      PORTFOLIO
                                                                        ---------------  ------------
<S>                                                                     <C>              <C>
INVESTMENT INCOME
Dividends.............................................................   $     397,945
Interest..............................................................         277,850    $  259,125
                                                                        ---------------  ------------
Total Investment Income...............................................         675,795       259,125
EXPENSES
Paid to FBL Investment Advisory Services, Inc. (NOTE 3):
  Investment advisory and management fees.............................         104,228         9,973
  Accounting fees.....................................................          10,423         1,662
Custodial fees........................................................           5,482         3,380
Legal fees............................................................          11,188         1,610
Audit fees............................................................           5,500         5,100
Reports to shareholders...............................................           4,169         4,169
Trustees' fees and expenses...........................................           2,120           365
Insurance and bonds...................................................           1,040           421
Miscellaneous.........................................................             187            32
                                                                        ---------------  ------------
Total Expenses........................................................         144,337        26,712
Expense reimbursement (NOTE 3)........................................         (29,686)       (8,233)
                                                                        ---------------  ------------
Net Expenses..........................................................         114,651        18,479
                                                                        ---------------  ------------
Net Investment Income.................................................         561,144       240,646
NET REALIZED AND UNREALIZED GAIN (LOSS) ON INVESTMENTS
Net realized gain from investment transactions........................       1,943,065        10,639
Change in unrealized appreciation/depreciation of investments.........       1,119,424       (60,696)
                                                                        ---------------  ------------
Net Gain (Loss) on Investments........................................       3,062,489       (50,057)
                                                                        ---------------  ------------
Net Increase in Net Assets Resulting from Operations..................   $   3,623,633    $  190,589
                                                                        ---------------  ------------
                                                                        ---------------  ------------
</TABLE>
 
SEE ACCOMPANYING NOTES.
 
                                       12
<PAGE>
 
<TABLE>
<CAPTION>
   HIGH
YIELD BOND      MANAGED      MONEY MARKET     BLUE CHIP
 PORTFOLIO     PORTFOLIO      PORTFOLIO       PORTFOLIO
- -----------  -------------  --------------  -------------
<S>          <C>            <C>             <C>
             $     497,489                  $     199,461
 $ 481,351         560,992   $    169,465          49,388
- -----------  -------------  --------------  -------------
   481,351       1,058,481        169,465         248,849
    26,585         109,830          9,579          20,647
     2,658           9,984          1,597           5,162
     3,875           5,306          4,484           6,573
     2,787          10,821          1,583           6,696
     5,100           5,500          5,100           5,100
     4,169           4,169          4,169           4,169
       581           2,003            343           1,010
       531             955            416             613
        51             135             43              85
- -----------  -------------  --------------  -------------
    46,337         148,703         27,314          50,055
   (17,094)        (38,874)        (9,569)
- -----------  -------------  --------------  -------------
    29,243         109,829         17,745          50,055
- -----------  -------------  --------------  -------------
   452,108         948,652        151,720         198,794
    61,503       1,834,462                         69,879
 
   127,569         488,900                      1,709,516
- -----------  -------------  --------------  -------------
   189,072       2,323,362                      1,779,395
- -----------  -------------  --------------  -------------
 $ 641,180   $   3,272,014   $    151,720   $   1,978,189
- -----------  -------------  --------------  -------------
- -----------  -------------  --------------  -------------
</TABLE>
 
                                       13
<PAGE>
FBL VARIABLE INSURANCE SERIES FUND
STATEMENTS OF CHANGES IN NET ASSETS
 
<TABLE>
<CAPTION>
                                                                                         VALUE
                                                                                         GROWTH
                                                                                       PORTFOLIO
                                                                             ------------------------------
                                                                                YEAR ENDED DECEMBER 31,
                                                                                  1996            1995
                                                                             --------------  --------------
<S>                                                                          <C>             <C>
OPERATIONS
Net investment income......................................................  $      561,144  $      628,640
Net realized gain (loss) from investment transactions......................       1,943,065         858,654
Change in unrealized appreciation/depreciation of investments..............       1,119,424       1,599,431
                                                                             --------------  --------------
Net Increase in Net Assets Resulting from Operations.......................       3,623,633       3,086,725
DIVIDENDS AND DISTRIBUTIONS TO SHAREHOLDERS FROM (NOTE 6)
Net investment income......................................................        (562,374)       (629,398)
Net realized gain from investment transactions.............................      (1,972,997)       (331,104)
                                                                             --------------  --------------
                                                                                 (2,535,371)       (960,502)
CAPITAL SHARE TRANSACTIONS (NOTE 4)........................................       9,804,958       3,565,672
                                                                             --------------  --------------
Total Increase in Net Assets...............................................      10,893,220       5,691,895
NET ASSETS
Beginning of year..........................................................      16,295,231      10,603,336
                                                                             --------------  --------------
End of year (including undistributed net investment income as set forth
  below)...................................................................  $   27,188,451  $   16,295,231
                                                                             --------------  --------------
                                                                             --------------  --------------
Undistributed Net Investment Income........................................  $        1,732  $        2,962
                                                                             --------------  --------------
                                                                             --------------  --------------
</TABLE>
 
SEE ACCOMPANYING NOTES.
 
                                       14
<PAGE>
 
<TABLE>
<CAPTION>
            HIGH                          HIGH
         GRADE BOND                    YIELD BOND
         PORTFOLIO                     PORTFOLIO
- ----------------------------  ----------------------------
  YEAR ENDED DECEMBER 31,       YEAR ENDED DECEMBER 31,
    1996           1995           1996           1995
- -------------  -------------  -------------  -------------
<S>            <C>            <C>            <C>
$     240,646  $     221,221  $     452,108  $     413,823
       10,639         (1,090)        61,503         66,905
      (60,696)       150,916        127,569        167,210
- -------------  -------------  -------------  -------------
      190,589        371,047        641,180        647,938
     (240,646)      (221,221)      (452,108)      (413,823)
                                    (67,895)       (61,458)
- -------------  -------------  -------------  -------------
     (240,646)      (221,221)      (520,003)      (475,281)
      376,216        606,696        997,822        465,130
- -------------  -------------  -------------  -------------
      326,159        756,522      1,118,999        637,787
    3,208,396      2,451,874      4,810,093      4,172,306
- -------------  -------------  -------------  -------------
$   3,534,555  $   3,208,396  $   5,929,092  $   4,810,093
- -------------  -------------  -------------  -------------
- -------------  -------------  -------------  -------------
$           0  $           0  $           0  $           0
- -------------  -------------  -------------  -------------
- -------------  -------------  -------------  -------------
</TABLE>
 
                                       15
<PAGE>
FBL VARIABLE INSURANCE SERIES FUND
STATEMENTS OF CHANGES IN NET ASSETS (CONTINUED)
 
<TABLE>
<CAPTION>
                                                                                        MANAGED
                                                                                       PORTFOLIO
                                                                             ------------------------------
                                                                                YEAR ENDED DECEMBER 31,
                                                                                  1996            1995
                                                                             --------------  --------------
<S>                                                                          <C>             <C>
OPERATIONS
Net investment income......................................................  $      948,652  $      691,938
Net realized gain (loss) from investment transactions......................       1,834,462         543,441
Change in unrealized appreciation/depreciation of investments..............         488,900       1,503,900
                                                                             --------------  --------------
Net Increase in Net Assets Resulting from Operations.......................       3,272,014       2,739,279
DIVIDENDS AND DISTRIBUTIONS TO SHAREHOLDERS FROM (NOTE 6)
Net investment income......................................................        (950,234)       (690,665)
Net realized gain from investment transactions.............................      (1,605,895)       (206,978)
                                                                             --------------  --------------
                                                                                 (2,556,129)       (897,643)
CAPITAL SHARE TRANSACTIONS (NOTE 4)........................................      10,819,073       2,887,288
                                                                             --------------  --------------
Total Increase in Net Assets...............................................      11,534,958       4,728,924
NET ASSETS
Beginning of year..........................................................      14,487,317       9,758,393
                                                                             --------------  --------------
End of year (including undistributed net investment income as set forth
  below)...................................................................  $   26,022,275  $   14,487,317
                                                                             --------------  --------------
                                                                             --------------  --------------
Undistributed Net Investment Income........................................  $        1,831  $        3,413
                                                                             --------------  --------------
                                                                             --------------  --------------
</TABLE>
 
SEE ACCOMPANYING NOTES.
 
                                       16
<PAGE>
 
<TABLE>
<CAPTION>
        MONEY MARKET                    BLUE CHIP
         PORTFOLIO                      PORTFOLIO
- ----------------------------  -----------------------------
  YEAR ENDED DECEMBER 31,        YEAR ENDED DECEMBER 31,
    1996           1995            1996           1995
- -------------  -------------  --------------  -------------
 
<S>            <C>            <C>             <C>
$     151,720  $     143,652  $      198,794  $      98,853
                                      69,879             (9)
                                   1,709,516      1,221,621
- -------------  -------------  --------------  -------------
      151,720        143,652       1,978,189      1,320,465
     (151,720)      (143,652)       (198,208)       (98,331)
                                     (69,445)
- -------------  -------------  --------------  -------------
     (151,720)      (143,652)       (267,653)       (98,331)
 
      660,688        500,759       6,117,777      2,180,879
- -------------  -------------  --------------  -------------
      660,688        500,759       7,828,313      3,403,013
 
    3,158,573      2,657,814       6,664,804      3,261,791
- -------------  -------------  --------------  -------------
$   3,819,261  $   3,158,573  $   14,493,117  $   6,664,804
- -------------  -------------  --------------  -------------
- -------------  -------------  --------------  -------------
$           0  $           0  $        1,327  $         741
- -------------  -------------  --------------  -------------
- -------------  -------------  --------------  -------------
</TABLE>
 
                                       17
<PAGE>
FBL VARIABLE INSURANCE SERIES FUND
SCHEDULE OF INVESTMENTS
VALUE GROWTH PORTFOLIO
DECEMBER 31, 1996
 
<TABLE>
<CAPTION>
                                                                SHARES
                                                                 HELD             VALUE
                                                                -------        -----------
<S>                                                             <C>        <C>
COMMON STOCKS (59.90%)
  CHEMICALS AND ALLIED PRODUCTS (5.17%)
  R.P. Scherer Corp. .........................................   28,000(1) $          1,407,000
  COMMUNICATIONS (3.71%)
  Aliant Communications.......................................   59,400               1,009,800
  DEPOSITORY INSTITUTIONS (4.82%)
  Cole Taylor Financial Group, Inc. ..........................   28,400                 752,600
  CU Bancorp..................................................   48,000                 558,000
                                                                                    -----------
                                                                                      1,310,600
  ELECTRIC, GAS AND SANITARY SERVICES (6.14%)
  Citizens Utilities Co., Class B.............................  111,517               1,240,626
  Montana Power Co............................................   20,000                 427,500
                                                                                    -----------
                                                                                      1,668,126
  ELECTRONIC AND OTHER ELECTRIC EQUIPMENT (5.82%)
  Applied Materials, Inc. ....................................   44,000(1)            1,581,250
  FOOD STORES (5.14%)
  Casey's General Stores, Inc. ...............................   74,500               1,396,875
  FURNITURE AND FIXTURES (4.20%)
  Ladd Furniture, Inc. .......................................   78,150(1)            1,142,944
  HOLDING AND OTHER INVESTMENT OFFICES (5.56%)
  Centennial Bancorp..........................................   17,828                 285,248
  General Growth Properties, Inc. ............................   38,000               1,225,500
                                                                                    -----------
                                                                                      1,510,748
  INSTRUMENTS & RELATED PRODUCTS (4.06%)
  Pall Corp. .................................................   43,300               1,104,150
  INSURANCE CARRIERS (2.43%)
  EMC Insurance Group, Inc. ..................................   55,000                 660,000
  METAL MINING (0.52%)
  Glamis Gold, Ltd............................................   20,100(1)              140,700
  MOTION PICTURES (3.07%)
  Disney (Walt) Co............................................   12,000                 835,500
  NONDEPOSITORY INSTITUTIONS (0.63%)
  Berkshire Hathaway, Inc. ...................................        5(1)              170,500
  PRINTING & PUBLISHING (1.54%)
  Belo (A.H.) Corp. ..........................................   12,000                 418,500
</TABLE>
 
                                       18
<PAGE>
FBL VARIABLE INSURANCE SERIES FUND
SCHEDULE OF INVESTMENTS (CONTINUED)
VALUE GROWTH PORTFOLIO
<TABLE>
<CAPTION>
                                                                SHARES
                                                                 HELD             VALUE
                                                                -------        -----------
  TRANSPORTATION -- BY AIR (3.03%)
<S>                                                             <C>        <C>
  Petroleum Helicopters, Inc. (Non-Voting)....................   52,300    $            823,725
  WHOLESALE TRADE -- DURABLE GOODS (0.27%)
  TBC Corporation.............................................   10,000(1)               75,000
  WHOLESALE TRADE -- NONDURABLE GOODS (3.79%)
  Howell Corp. ...............................................   59,440                 887,885
  Super Valu Stores, Inc. ....................................    5,000                 141,875
                                                                                    -----------
                                                                                      1,029,760
                                                                                    -----------
Total Common Stocks...........................................                       16,285,178
PREFERRED STOCKS (9.89%)
  DEPOSITORY INSTITUTIONS (5.97%)
  Community First Bankshares, Inc., Convertible...............   23,800               1,053,150
  Sterling Financial Corp.....................................   18,500                 568,875
                                                                                    -----------
                                                                                      1,622,025
  INSTRUMENTS & RELATED PRODUCTS (1.19%)
  US Surgical Corp., Convertible..............................    8,500                 325,125
  WATER TRANSPORTATION (2.73%)
  Sea Containers, Ltd., Convertible...........................   16,320                 742,560
                                                                                    -----------
Total Preferred Stocks........................................                        2,689,710
</TABLE>
 
                                       19
<PAGE>
FBL VARIABLE INSURANCE SERIES FUND
SCHEDULE OF INVESTMENTS (CONTINUED)
VALUE GROWTH PORTFOLIO
 
<TABLE>
<CAPTION>
                                                                   PRINCIPAL
                                                                     AMOUNT       VALUE
                                                                   ----------  -----------
<S>                                                                <C>         <C>
CORPORATE BOND (1.95%)
  ELECTRONIC & OTHER ELECTRIC EQUIPMENT
  California Microwave, Convertible Sub. Deb., 5.25%, 12/15/03...  $  650,000  $   531,375
SHORT-TERM INVESTMENTS (27.60%)
  COMMERCIAL PAPER (11.50%)
  American General Finance Corp., 6.15%, due 1/06/97.............     175,000      175,000
  Ford Motor Credit Corp., 5.74%, due 1/09/97....................   1,300,000    1,300,000
  General Electric Capital Corp., 5.42%, due 1/15/97.............     650,000      650,000
  Norwest Financial Inc., 5.45%, due 2/26/97.....................   1,000,000    1,000,000
                                                                               -----------
                                                                                 3,125,000
  MONEY MARKET MUTUAL FUND (2.94%)
  Dreyfus Treasury Cash Management, Class A......................     799,506      799,506
  UNITED STATES GOVERNMENT AGENCIES (13.16%)
  Federal Home Loan Mortgage Corp., due 1/31/97..................   1,700,000    1,692,446
  Federal National Mortgage Assoc., due 2/18/97..................   1,600,000    1,588,588
  Federal National Mortgage Assoc., due 2/24/97..................     300,000      297,585
                                                                               -----------
                                                                                 3,578,619
                                                                               -----------
Total Short-Term Investments.....................................                7,503,125
                                                                               -----------
Total Investments (99.34%).......................................               27,009,388
 
OTHER ASSETS LESS LIABILITIES (0.66%)
  Cash and receivables, less liabilities.........................                  179,063
                                                                               -----------
Total Net Assets (100.00%).......................................              $27,188,451
                                                                               -----------
                                                                               -----------
</TABLE>
 
(1) Non-income producing security.
 
SEE ACCOMPANYING NOTES.
 
                                       20
<PAGE>
FBL VARIABLE INSURANCE SERIES FUND
SCHEDULE OF INVESTMENTS
HIGH GRADE BOND PORTFOLIO
DECEMBER 31, 1996
 
<TABLE>
<CAPTION>
                                                                      PRINCIPAL
                                                                       AMOUNT       VALUE
                                                                     -----------  ----------
<S>                                                                  <C>          <C>
 
CORPORATE BONDS (66.69%)
  APPAREL AND ACCESSORY STORES (0.31%)
  TJX Companies, Inc., 9.50%, due 5/01/16..........................   $  11,000   $   11,069
  COMMUNICATIONS (7.11%)
  New York Telephone Co., 7.75%, due 12/15/06......................     150,000      152,025
  Pacific Telephone & Telegraph Co, 7.25%, due 2/01/08.............     100,000       99,339
                                                                                  ----------
                                                                                     251,364
  DEPOSITORY INSTITUTIONS (14.86%)
  J. P. Morgan & Co., 7.25%, due 10/01/10..........................     150,000      148,182
  Midland America Capital Corp., 12.75%, due 11/15/03..............     155,000      172,180
  Norwest Corp., 9.25%, due 5/01/97................................     100,000      101,226
  Third National Corp., 7.50%, due 11/15/02........................     103,000      103,650
                                                                                  ----------
                                                                                     525,238
  ELECTRIC, GAS AND SANITARY SERVICES (15.11%)
  MDU Resources Group, Inc., 9.125%, due 10/01/16..................     100,000      106,525
  New England Power Co., 8.00%, due 8/01/22........................     150,000      151,356
  Southern California Edison Co., 8.875%, due 6/01/24..............     125,000      130,158
  Western Penn Power, 7.875%, due 12/01/04.........................     140,000      145,821
                                                                                  ----------
                                                                                     533,860
  HOLDING AND OTHER INVESTMENT OFFICES (7.34%)
  Federal Realty Investment Trust, 8.875%, due 1/15/00.............     100,000      105,894
  Meditrust, 7.60%, due 9/13/05....................................     150,000      153,502
                                                                                  ----------
                                                                                     259,396
  INSURANCE CARRIERS (3.64%)
  Torchmark Corporation, 8.625%, due 3/01/17.......................     125,000      128,750
  NONDEPOSITORY INSTITUTIONS (2.86%)
  Dillard Investment Co., 9.25%, due 5/01/97.......................     100,000      101,204
  PRINTING AND PUBLISHING (2.96%)
  Valassis Communications, Inc., 9.55%, due 12/01/03...............     100,000      104,590
  RAILROAD TRANSPORTATION (4.45%)
  Union Pacific Corp., 8.50%, due 1/15/17..........................     150,000      157,142
  SECURITY AND COMMODITY BROKERS (2.95%)
  Lehman Brothers Holding, Inc., 8.875%, due 11/01/98..............     100,000      104,249
</TABLE>
 
                                       21
<PAGE>
FBL VARIABLE INSURANCE SERIES FUND
SCHEDULE OF INVESTMENTS (CONTINUED)
HIGH GRADE BOND PORTFOLIO
 
<TABLE>
<CAPTION>
                                                                      PRINCIPAL
                                                                       AMOUNT       VALUE
                                                                     -----------  ----------
  TRANSPORTATION EQUIPMENT (5.10%)
<S>                                                                  <C>          <C>
  Ford Motor Credit Co., 9.50%, due 9/15/11........................   $ 150,000   $  180,237
                                                                                  ----------
Total Corporate Bonds..............................................                2,357,099
MORTGAGE-BACKED SECURITIES (7.91%)
  FEDERAL NATIONAL MORTGAGE ASSOCIATION (FNMA) (1.61%)
  Pool # 50276, 9.50%, due 2/01/20.................................      52,536       56,821
  GOVERNMENT NATIONAL MORTGAGE ASSOCIATION (GNMA) (6.30%)
  Pool # 236070, 10.00%, due 10/15/12..............................      86,906       93,832
  Pool # 276337, 10.00%, due 8/15/19...............................     117,379      128,934
                                                                                  ----------
                                                                                     222,766
                                                                                  ----------
Total Mortgage-Backed Securities...................................                  279,587
UNITED STATES TREASURY OBLIGATION (11.90%)
  U.S. Treasury Note, 7.25%, due 8/15/04...........................     400,000      420,676
SHORT-TERM INVESTMENTS (10.58%)
  UNITED STATES GOVERNMENT AGENCIES
  Federal Farm Credit Bank, due 1/06/97............................     150,000      149,891
  Federal National Mortgage Assoc., due 2/03/97....................     225,000      223,902
                                                                                  ----------
Total Short-Term Investments.......................................                  373,793
                                                                                  ----------
Total Investments (97.08%).........................................                3,431,155
OTHER ASSETS LESS LIABILITIES (2.92%)
  Cash and receivables, less liabilities...........................                  103,400
                                                                                  ----------
Total Net Assets (100.00%).........................................               $3,534,555
                                                                                  ----------
                                                                                  ----------
</TABLE>
 
SEE ACCOMPANYING NOTES.
 
                                       22
<PAGE>
FBL VARIABLE INSURANCE SERIES FUND
SCHEDULE OF INVESTMENTS
HIGH YIELD BOND PORTFOLIO
DECEMBER 31, 1996
 
<TABLE>
<CAPTION>
                                                                    PRINCIPAL
                                                                      AMOUNT      VALUE
                                                                    ----------  ----------
<S>                                                                 <C>         <C>
 
CORPORATE BONDS (91.44%)
  AMUSEMENT AND RECREATION SERVICES (4.29%)
  AMF Group, Inc., 10.875%, due 3/15/06...........................  $  240,000  $  253,800
  APPAREL AND ACCESSORY STORES (2.00%)
  Genesco, Inc., 10.375%, due 2/01/03.............................     100,000     102,375
  TJX Companies, Inc., 9.50%, due 5/01/16.........................      16,000      16,100
                                                                                ----------
                                                                                   118,475
  APPAREL AND OTHER TEXTILE PRODUCTS (6.09%)
  Dan River, Inc., 10.125%, due 12/15/03..........................     200,000     203,000
  Fieldcrest Cannon, Inc., 11.25%, due 6/15/04....................     150,000     157,875
                                                                                ----------
                                                                                   360,875
  AUTO REPAIR, SERVICES AND PARKING (1.40%)
  Envirotest Systems Corp., 9.625%, due 4/01/03...................     100,000      82,625
  BUSINESS SERVICES (2.52%)
  Borg-Warner Corp., 9.125%, due 5/01/03..........................     150,000     149,250
  COMMUNICATIONS (8.19%)
  PanAmSat, L.P., 9.75%, due 8/01/00..............................     200,000     213,500
  Tele-Communications, Inc., 9.80%, due 2/01/12...................     250,000     271,358
                                                                                ----------
                                                                                   484,858
  DEPOSITORY INSTITUTIONS (4.09%)
  First Bank N.A., 6.25%, due 8/15/05.............................     250,000     242,450
  ELECTRIC, GAS AND SANITARY SERVICES (12.50%)
  Montana Power Co., 7.50%, due 1/01/98...........................      97,000      97,238
  New England Power Co., 8.00%, due 8/01/22.......................     200,000     201,808
  Public Service Company of New Mexico, 5.875%, due 5/01/97.......     150,000     149,941
  Southern California Edison Co., 8.875%, due 6/01/24.............     280,000     291,553
                                                                                ----------
                                                                                   740,540
  ELECTRONIC AND OTHER ELECTRIC EQUIPMENT (8.13%)
  Advanced Micro Devices, Inc., 11.00%, due 8/01/03...............     240,000     261,600
  Amphenol Corp., 12.75%, due 12/15/02............................     200,000     220,250
                                                                                ----------
                                                                                   481,850
  FABRICATED METAL PRODUCTS (3.56%)
  Ryerson Tull, Inc., 9.125%, due 7/15/06.........................     200,000     211,000
</TABLE>
 
                                       23
<PAGE>
FBL VARIABLE INSURANCE SERIES FUND
SCHEDULE OF INVESTMENTS (CONTINUED)
HIGH YIELD BOND PORTFOLIO
<TABLE>
<CAPTION>
                                                                    PRINCIPAL
                                                                      AMOUNT      VALUE
                                                                    ----------  ----------
  FOOD STORES (5.17%)
<S>                                                                 <C>         <C>
  P&C Food Markets, Inc., 11.50%, due 10/15/01....................  $  150,000  $  133,500
  Penn Traffic Co., 10.25%, due 2/15/02...........................     200,000     173,000
                                                                                ----------
                                                                                   306,500
  GENERAL MERCHANDISE STORES (3.70%)
  Federated Department Stores, Inc., 10.00%, due 2/15/01..........     200,000     219,244
  INSURANCE CARRIERS (3.48%)
  Torchmark Corp., 8.625%, due 3/01/17............................     200,000     206,000
  LUMBER AND WOOD PRODUCTS (7.68%)
  Georgia-Pacific Corp., 9.875%, due 11/01/21.....................     225,000     251,858
  Pacific Lumber Co., 10.50%, due 3/01/03.........................     200,000     203,250
                                                                                ----------
                                                                                   455,108
  MISCELLANEOUS RETAIL (3.78%)
  Eckerd Corp., 9.25%, due 2/15/04................................     205,000     223,963
  PAPER AND ALLIED PRODUCTS (3.56%)
  Container Corp. of America, 9.75%, due 4/01/03..................     200,000     211,000
  PETROLEUM AND COAL PRODUCTS (2.20%)
  Clark Oil & Refining Corp., 10.50%, due 12/01/01................     125,000     130,312
  RUBBER AND MISCELLANEOUS PLASTICS PRODUCTS (3.56%)
  Plastic Specialties & Technologies, Inc., 11.25%, due
   12/01/03.......................................................     200,000     211,000
  STONE, CLAY AND GLASS PRODUCTS (5.54%)
  Owens-Illinois, Inc., 11.00%, due 12/01/03......................     150,000     167,625
  USG Corp., 9.25%, due 9/15/01...................................     150,000     160,500
                                                                                ----------
                                                                                   328,125
                                                                                ----------
Total Corporate Bonds.............................................               5,416,975
 
<CAPTION>
 
                                                                      SHARES
                                                                       HELD
                                                                    ----------
<S>                                                                 <C>         <C>
COMMON STOCK (0.85%)
  TEXTILE MILL PRODUCTS
  Bibb Company (The)..............................................       7,490      50,557
</TABLE>
 
                                       24
<PAGE>
FBL VARIABLE INSURANCE SERIES FUND
SCHEDULE OF INVESTMENTS (CONTINUED)
HIGH YIELD BOND PORTFOLIO
 
<TABLE>
<CAPTION>
                                                                    PRINCIPAL
                                                                      AMOUNT      VALUE
                                                                    ----------  ----------
<S>                                                                 <C>         <C>
SHORT-TERM INVESTMENTS (8.41%)
  UNITED STATES GOVERNMENT AGENCIES
  Federal Home Loan Mortgage Corp., due 1/16/97...................  $  200,000  $  199,562
  Federal National Mortgage Corp., due 2/03/97....................     300,000     298,537
                                                                                ----------
Total Short-Term Investments......................................                 498,099
                                                                                ----------
Total Investments (100.70%).......................................               5,965,631
OTHER ASSETS LESS LIABILITIES (-0.70%)
  Receivables less liabilities....................................                 (36,539)
                                                                                ----------
Total Net Assets (100.00%)........................................              $5,929,092
                                                                                ----------
                                                                                ----------
</TABLE>
 
SEE ACCOMPANYING NOTES.
 
                                       25
<PAGE>
FBL VARIABLE INSURANCE SERIES FUND
SCHEDULE OF INVESTMENTS
MANAGED PORTFOLIO
DECEMBER 31, 1996
 
<TABLE>
<CAPTION>
                                                                     SHARES
                                                                      HELD         VALUE
                                                                   -----------  -----------
<S>                                                                <C>          <C>
COMMON STOCKS (18.09%)
  COMMUNICATIONS (1.83%)
  Aliant Communications, Inc.....................................      28,000   $   476,000
  ELECTRIC, GAS AND SANITARY SERVICES (6.83%)
  Citizens Utilities Co., Class B................................      86,719       964,749
  Montana Power Co...............................................      38,000       812,250
                                                                                -----------
                                                                                  1,776,999
  HOLDING AND OTHER INVESTMENT OFFICES (7.23%)
  Centennial Bancorp.............................................      43,092       689,472
  General Growth Properties, Inc.................................      37,000     1,193,250
                                                                                -----------
                                                                                  1,882,722
  INSURANCE CARRIERS (2.20%)
  EMC Insurance Group, Inc.......................................      47,700       572,400
                                                                                -----------
Total Common Stocks..............................................                 4,708,121
PREFERRED STOCKS (22.05%)
  DEPOSITORY INSTITUTIONS (6.90%)
  Community First Bankshares, Inc., Convertible..................      25,000     1,106,250
  Sterling Financial Corp........................................      22,450       690,337
                                                                                -----------
                                                                                  1,796,587
  HOLDING AND OTHER INVESTMENT OFFICES (1.99%)
  Security Capital Industrial Trust, Convertible.................      19,000       517,750
  INSTRUMENTS AND RELATED PRODUCTS (1.16%)
  US Surgical Corp., Convertible.................................       7,900       302,175
  OIL AND GAS EXTRACTION (1.38%)
  Chieftain International, Inc., Convertible.....................      11,000       360,250
  PETROLEUM AND COAL PRODUCTS (3.17%)
  Ashland Oil Co.................................................      12,000       823,500
  WATER TRANSPORTATION (2.10%)
  Sea-Containers, Ltd., Convertible..............................      12,000       546,000
  WHOLESALE TRADE -- DURABLE GOODS (3.16%)
  Kaman Corp., Convertible.......................................      15,000       821,250
  WHOLESALE TRADE -- NONDURABLE GOODS (2.19%)
  Howell Corp....................................................      11,000       569,250
                                                                                -----------
Total Preferred Stocks...........................................                 5,736,762
</TABLE>
 
                                       26
<PAGE>
FBL VARIABLE INSURANCE SERIES FUND
SCHEDULE OF INVESTMENTS (CONTINUED)
MANAGED PORTFOLIO
 
<TABLE>
<CAPTION>
                                                                  PRINCIPAL
                                                                    AMOUNT       VALUE
                                                                  ----------  -----------
<S>                                                               <C>         <C>
CORPORATE BONDS (4.89%)
  DEPOSITORY INSTITUTIONS (0.47%)
  Midland America Capital Corp., 12.75%, due 11/15/03...........  $  110,000  $   122,192
  ELECTRIC, GAS AND SANITARY SERVICES (0.38%)
  National Co-op Services Corp. (Arkansas Electric), 9.48%, due
   1/01/12......................................................      92,000       97,672
  ELECTRONIC & OTHER ELECTRIC EQUIPMENT (3.14%)
  California Microwave, Convertible Sub. Deb., 5.25%, due
   12/15/03.....................................................   1,000,000      817,500
  INSURANCE CARRIERS (0.59%)
  Torchmark Corp., 8.625%, due 3/01/17..........................     150,000      154,500
  PETROLEUM AND COAL PRODUCTS (0.31%)
  Pennzoil Co., 9.00%, due 4/01/17..............................      77,000       81,158
                                                                              -----------
Total Corporate Bonds...........................................                1,273,022
</TABLE>
 
                                       27
<PAGE>
FBL VARIABLE INSURANCE SERIES FUND
SCHEDULE OF INVESTMENTS (CONTINUED)
MANAGED PORTFOLIO
 
<TABLE>
<CAPTION>
                                                                  PRINCIPAL
                                                                    AMOUNT       VALUE
                                                                  ----------  -----------
SHORT-TERM INVESTMENTS (54.05%)
<S>                                                               <C>         <C>
  COMMERCIAL PAPER (24.78%)
  American General Finance Corp., 5.43%, due 1/28/97............  $1,000,000  $ 1,000,000
  General Electric Capital Corp., 6.00%, due 1/03/97............     650,000      650,000
  IBM Credit Corp., 5.48%, due 1/24/97..........................   1,250,000    1,250,000
  John Deere Capital Corp., 5.42%, due 1/07/97..................   1,100,000    1,100,000
  Norwest Financial, Inc., 5.43%, due 1/22/97...................   1,200,000    1,200,000
  Texaco, Inc., 5.61%, due 1/10/97..............................   1,250,000    1,250,000
                                                                              -----------
                                                                                6,450,000
  MONEY MARKET MUTUAL FUND (3.87%)
  Dreyfus Treasury Cash Management, Class A.....................   1,006,285    1,006,285
  UNITED STATES GOVERNMENT AGENCIES (25.40%)
  Federal Home Loan Mortgage Corp., due 2/24/97.................   1,250,000    1,239,970
  Federal National Mortgage Assoc., due 1/14/97.................   1,600,000    1,596,940
  Federal National Mortgage Assoc., due 2/03/97.................   1,300,000    1,293,670
  Federal National Mortgage Assoc., due 2/18/97.................   1,300,000    1,290,793
  Federal National Mortgage Assoc., due 2/24/97.................     225,000      223,189
  Federal National Mortgage Assoc., due 3/13/97.................     975,000      964,703
                                                                              -----------
                                                                                6,609,265
                                                                              -----------
Total Short-Term Investments....................................               14,065,550
                                                                              -----------
Total Investments (99.08%)......................................               25,783,455
OTHER ASSETS LESS LIABILITIES (0.92%)
  Cash and receivables, less liabilities........................                  238,820
                                                                              -----------
Total Net Assets (100.00%)......................................              $26,022,275
                                                                              -----------
                                                                              -----------
</TABLE>
 
SEE ACCOMPANYING NOTES.
 
                                       28
<PAGE>
FBL VARIABLE INSURANCE SERIES FUND
SCHEDULE OF INVESTMENTS
MONEY MARKET PORTFOLIO
DECEMBER 31, 1996
 
<TABLE>
<CAPTION>
                                                         ANNUALIZED
                                                          YIELD ON
                                                          PURCHASE      PRINCIPAL
                                                            DATE         AMOUNT       VALUE
                                                        -------------  -----------  ----------
<S>                                                     <C>            <C>          <C>
SHORT-TERM INVESTMENTS (92.11%)
  COMMERCIAL PAPER (25.00%)
    NONDEPOSITORY INSTITUTIONS (21.07%)
    American General Finance Corp., 5.46%, due
     2/10/97..........................................       5.458%     $ 100,000   $  100,000
    Ford Motor Credit Corp., 5.39%, due 1/21/97.......       5.395        155,000      155,000
    General Electric Capital Corp., 5.53%, due
     1/24/97..........................................       5.530        150,000      150,000
    IBM Credit Corp., 5.42%, due 1/03/97..............       5.416        125,000      125,000
    John Deere Capital Corp., 5.51%, due 1/15/97......       5.513        150,000      150,000
    Norwest Financial, Inc., 5.61%, due 1/09/97.......       5.615        125,000      125,000
                                                                                    ----------
                                                                                       805,000
    PETROLEUM & COAL PRODUCTS (3.93%)
    Texaco, Inc., 5.53%, due 1/28/97..................       5.528        150,000      150,000
                                                                                    ----------
  Total Commercial Paper..............................                                 955,000
  UNITED STATES GOVERNMENT AGENCIES (67.11%)
    Federal Farm Credit Bank, due 2/19/97.............       5.496        100,000       99,268
    Federal Farm Credit Bank, due 2/24/97.............       5.500        100,000       99,193
    Federal Home Loan Bank, due 1/10/97...............       5.367        275,000      274,636
    Federal Home Loan Bank, due 1/15/97...............       5.401        275,000      274,432
    Federal Home Loan Bank, due 1/23/97...............       5.524        250,000      249,170
    Federal Home Loan Bank, due 2/21/97...............       5.480        175,000      173,670
    Federal Home Loan Mortgage Corp., due 1/07/97.....       5.424        250,000      249,777
    Federal Home Loan Mortgage Corp., due 1/31/97.....       5.384        250,000      248,899
    Federal Home Loan Mortgage Corp., due 2/07/97.....       5.425        350,000      348,086
    Federal National Mortgage Assoc., due 2/03/97.....       5.412        350,000      348,296
    Federal National Mortgage Assoc., due 3/24/97.....       5.419        200,000      197,594
                                                                                    ----------
  Total United States Government Agencies.............                               2,563,021
                                                                                    ----------
Total Short-Term Investments..........................                               3,518,021
OTHER ASSETS LESS LIABILITIES (7.89%)
  Cash and receivables, less liabilities..............                                 301,240
                                                                                    ----------
Total Net Assets (100.00%)............................                              $3,819,261
                                                                                    ----------
                                                                                    ----------
</TABLE>
 
SEE ACCOMPANYING NOTES.
 
                                       29
<PAGE>
FBL VARIABLE INSURANCE SERIES FUND
SCHEDULE OF INVESTMENTS
BLUE CHIP PORTFOLIO
DECEMBER 31, 1996
 
<TABLE>
<CAPTION>
                                                             SHARES
                                                              HELD             VALUE
                                                             -------    --------------------
<S>                                                          <C>        <C>
COMMON STOCKS (90.57%)
  CHEMICALS AND ALLIED PRODUCTS (16.89%)
  Bristol-Myers Squibb Co. ................................    2,859    $            310,916
  DuPont (EI) de Nemours & Co. ............................    3,302                 311,626
  Eastman Chemical Co. ....................................    3,450                 190,613
  Johnson & Johnson........................................    6,427                 319,743
  Merck & Co., Inc. .......................................    4,476                 354,723
  Praxair, Inc. ...........................................    7,815                 360,467
  Procter & Gamble Co. ....................................    3,005                 323,038
  Union Carbide Corp. .....................................    6,748                 275,824
                                                                        --------------------
                                                                                   2,446,950
  COMMUNICATIONS (2.94%)
  American Telephone & Telegraph Co. ......................    4,289                 186,572
  Bell Atlantic Corp. .....................................    3,703                 239,769
                                                                        --------------------
                                                                                     426,341
  DEPOSITORY INSTITUTIONS (2.03%)
  J. P. Morgan & Co., Inc. ................................    3,012                 294,046
  EATING AND DRINKING PLACES (2.00%)
  McDonald's Corp. ........................................    6,402                 289,691
  ELECTRONIC & OTHER ELECTRIC EQUIPMENT (2.97%)
  General Electric Co. ....................................    3,605                 356,444
  Lucent Technologies, Inc. ...............................    1,602                  74,109
                                                                        --------------------
                                                                                     430,553
  FOOD AND KINDRED PRODUCTS (6.90%)
  Coca-Cola Co. (The)......................................    7,565                 398,108
  PepsiCo, Inc. ...........................................    9,458                 276,647
  Philip Morris Companies, Inc. ...........................    2,877                 324,022
                                                                        --------------------
                                                                                     998,777
  GENERAL MERCHANDISE STORES (4.95%)
  Sears, Roebuck & Co. ....................................    5,106                 235,514
  Wal-Mart Stores, Inc. ...................................    9,627                 220,218
  Woolworth (F.W.) Co., Ltd. ..............................   11,930(1)              260,969
                                                                        --------------------
                                                                                     716,701
</TABLE>
 
                                       30
<PAGE>
FBL VARIABLE INSURANCE SERIES FUND
SCHEDULE OF INVESTMENTS (CONTINUED)
BLUE CHIP PORTFOLIO
 
<TABLE>
<CAPTION>
                                                             SHARES
                                                              HELD             VALUE
                                                             -------    --------------------
  INDUSTRIAL MACHINERY AND EQUIPMENT (4.42%)
<S>                                                          <C>        <C>
  Caterpillar, Inc. .......................................    4,136    $            311,234
  International Business Machines Corp. ...................    2,180                 329,180
                                                                        --------------------
                                                                                     640,414
  INSTRUMENTS AND RELATED PRODUCTS (1.96%)
  Eastman Kodak Co. .......................................    3,540                 284,085
  INSURANCE CARRIERS (4.37%)
  Allstate Corp. ..........................................    5,029                 291,053
  American International Group, Inc. ......................    3,164                 342,503
                                                                        --------------------
                                                                                     633,556
  MOTION PICTURES (2.05%)
  Disney (Walt) Co. .......................................    4,263                 296,811
  NONDEPOSITORY INSTITUTIONS (1.92%)
  Dean Witter, Discover & Co...............................    4,196                 277,985
  PAPER AND ALLIED PRODUCTS (3.74%)
  International Paper Co. .................................    5,926                 239,262
  Minnesota Mining & Manufacturing Co......................    3,649                 302,411
                                                                        --------------------
                                                                                     541,673
  PETROLEUM AND COAL PRODUCTS (11.29%)
  Amoco Corp. .............................................    3,250                 261,625
  Chevron Corp. ...........................................    4,247                 276,055
  Exxon Corp. .............................................    2,983                 292,334
  Mobil Corp. .............................................    2,252                 275,307
  Texaco, Inc. ............................................    2,859                 280,539
  USX Corp. -- Marathon Group..............................   10,427                 248,945
                                                                        --------------------
                                                                                   1,634,805
  PRIMARY METAL INDUSTRIES (3.00%)
  Aluminum Company of America..............................    4,426                 282,158
  Bethlehem Steel Corp. ...................................   16,956(1)              152,604
                                                                        --------------------
                                                                                     434,762
  RUBBER AND MISCELLANEOUS PLASTICS PRODUCTS (2.60%)
  Goodyear Tire & Rubber Co................................    7,338                 376,990
</TABLE>
 
                                       31
<PAGE>
FBL VARIABLE INSURANCE SERIES FUND
SCHEDULE OF INVESTMENTS (CONTINUED)
BLUE CHIP PORTFOLIO
<TABLE>
<CAPTION>
                                                             SHARES
                                                              HELD             VALUE
                                                             -------    --------------------
  SECURITY AND COMMODITY BROKERS (4.13%)
<S>                                                          <C>        <C>
  American Express Co. ....................................    5,918    $            334,367
  Lehman Brothers Holding, Inc.............................    8,390                 263,236
                                                                        --------------------
                                                                                     597,603
  TRANSPORTATION EQUIPMENT (10.70%)
  Allied-Signal, Inc. .....................................    5,552                 371,984
  Boeing Co. (The).........................................    3,259                 346,676
  Ford Motor Co. ..........................................    7,667                 244,386
  General Motors Corp. ....................................    4,464                 248,868
  United Technologies Corp. ...............................    5,130                 338,580
                                                                        --------------------
                                                                                   1,550,494
  WHOLESALE TRADE -- DURABLE GOODS (1.71%)
  Westinghouse Electric Corp...............................   12,453                 247,503
                                                                        --------------------
Total Common Stocks........................................                       13,119,740
 
<CAPTION>
 
                                                             PRINCIPAL
                                                             AMOUNT
                                                             -------
<S>                                                          <C>        <C>
SHORT-TERM INVESTMENTS (9.44%)
  UNITED STATES GOVERNMENT AGENCIES
  Federal Home Loan Bank, due 1/27/97......................  $500,000                498,107
  Federal Home Loan Mortgage Corp., due 2/07/97............  650,000                 646,445
  Federal Home Loan Mortgage Corp., due 3/10/97............  225,000                 222,726
                                                                        --------------------
Total Short-Term Investments...............................                        1,367,278
                                                                        --------------------
Total Investments (100.01%)................................                       14,487,018
OTHER ASSETS LESS LIABILITIES (-0.01%)
  Receivables less liabilities.............................                            6,099
                                                                        --------------------
Total Net Assets (100.00%).................................             $         14,493,117
                                                                        --------------------
                                                                        --------------------
</TABLE>
 
(1) Non-income producing security.
 
SEE ACCOMPANYING NOTES.
 
                                       32
<PAGE>
FBL VARIABLE INSURANCE SERIES FUND
NOTES TO FINANCIAL STATEMENTS
DECEMBER 31, 1996
 
1. SIGNIFICANT ACCOUNTING POLICIES
    FBL  Variable Insurance  Series Fund  (the "Fund")  is registered  under the
Investment Company Act of 1940, as  amended, as a no-load, open-end  diversified
management  investment  company  and  operates  in  the  mutual  fund  industry.
Effective December 1, 1996,  the Growth Common Stock  Portfolio was renamed  the
Value  Growth Portfolio. The Fund currently consists of six portfolios (known as
the Value Growth, High  Grade Bond, High Yield  Bond, Managed, Money Market  and
Blue  Chip  Portfolios).  Shares of  the  Fund  are sold  only  to  certain life
insurance companies'  separate  accounts to  fund  the benefits  under  variable
insurance  contracts  issued by  such life  insurance companies,  including Farm
Bureau Life Insurance Company (see NOTE 3).
 
    All portfolios, other than  the Money Market  Portfolio, value their  common
stocks,  preferred stocks,  corporate bonds, United  States Treasury obligations
and mortgage-backed securities that are traded  on any national exchange at  the
last  sale price  on the  day of valuation  or, lacking  any sales,  at the mean
between  the  closing  bid   and  asked  prices.   Investments  traded  in   the
over-the-counter  market are valued at the mean between the bid and asked prices
or yield equivalent as obtained  from one or more  dealers that make markets  in
the  securities.  Investments  for  which  market  quotations  are  not  readily
available are valued at fair value as  determined in good faith by the Board  of
Trustees. Short-term investments (including repurchase agreements) are valued at
market  value, except that  obligations maturing in  60 days or  less are valued
using the amortized cost method of valuation described below with respect to the
Money Market Portfolio, which approximates market.
 
    The Money  Market  Portfolio values  investments  at amortized  cost,  which
approximates  market. Under the  amortized cost method, a  security is valued at
its cost  on the  date  of purchase  and thereafter  is  adjusted to  reflect  a
constant amortization to maturity of the difference between the principal amount
due at maturity and the cost of the investment to the portfolio.
 
    The  value of the underlying  securities serving to collateralize repurchase
agreements is  marked  to market  daily.  Should  the value  of  the  underlying
securities  decline,  the seller  would be  required  to provide  the applicable
portfolio with  additional  securities  so  that  the  aggregate  value  of  the
underlying securities was at least equal to the repurchase price. If a seller of
a  repurchase agreement were to default, the affected portfolio might experience
losses in enforcing its  rights. To minimize this  risk, the investment  adviser
(under   the  supervision   of  the   Board  of   Trustees)  will   monitor  the
creditworthiness of the seller  of the repurchase agreement  and must find  such
creditworthiness  satisfactory before a portfolio  may enter into the repurchase
agreement.
 
    The Fund records investment transactions  generally one day after the  trade
date.  The identified cost basis  has been used in  determining the net realized
gain or  loss  from  investment  transactions  and  unrealized  appreciation  or
depreciation on investments. Dividend income is recorded on the ex-dividend date
and  interest  is recognized  on  an accrual  basis.  Discounts and  premiums on
investments purchased are amortized over the life of the respective investments.
 
    Dividends and distributions to shareholders are recorded on the record date.
 
    The  preparation  of  financial  statements  in  conformity  with  generally
accepted  accounting  principles  requires  management  to  make  estimates  and
assumptions that affect the reported amounts of assets
 
                                       33
<PAGE>
FBL VARIABLE INSURANCE SERIES FUND
NOTES TO FINANCIAL STATEMENTS (CONTINUED)
 
1. SIGNIFICANT ACCOUNTING POLICIES (CONTINUED)
and liabilities and disclosure of contingent assets and liabilities at the  date
of  the financial statements  and the reported amounts  of revenues and expenses
during the reporting period. Actual results could differ from those estimates.
 
2. FEDERAL INCOME TAXES
    No provision for federal  income taxes is  considered necessary because  the
Fund is qualified as a "regulated investment company" under the Internal Revenue
Code and intends to distribute each year substantially all of its net investment
income  and realized capital  gains to shareholders. The  cost of investments is
the same for both federal income tax and financial reporting purposes.
 
    At December 31, 1996, the High Grade  Bond Portfolio had a net capital  loss
carryforward of approximately $17,000, which will expire from 1998 through 2003.
During  the year ended December 31, 1996,  the High Grade Bond Portfolio had net
capital loss  carryforwards of  $3,388 that  expired. As  a result,  $3,388  was
reclassified  from  accumulated  undistributed  net  realized  gain  (loss) from
investment transactions to paid-in capital.
 
3. MANAGEMENT CONTRACT AND TRANSACTIONS WITH AFFILIATES
    The Fund has entered into agreements with FBL Investment Advisory  Services,
Inc.  ("FBL Investment")  relating to the  management of the  portfolios and the
investment of  their assets.  Pursuant to  these agreements,  fees paid  to  FBL
Investment  are as follows: (1) annual  investment advisory and management fees,
which are based on  each portfolio's daily net  assets as follows: Value  Growth
Portfolio  - 0.50%; High Grade Bond Portfolio - 0.30%; High Yield Bond Portfolio
- -0.50%; Managed Portfolio - 0.55%; Money Market Portfolio - 0.30%; and Blue Chip
Portfolio - 0.20%; and (2) accounting fees, which are based on each  portfolio's
daily net assets at an annual rate of 0.05%, with a maximum per portfolio annual
expense of $30,000.
 
    The  Fund  has entered  into an  agreement with  FBL Investment  whereby FBL
Investment also  serves as  the  principal underwriter  and distributor  of  the
Fund's  shares  and as  the Fund's  shareholder  service, transfer  and dividend
disbursing agent. There are no additional fees associated with these services.
 
    FBL Investment has  agreed to  reimburse the portfolios  annually for  total
expenses,  excluding brokerage,  interest, taxes  and extraordinary  expenses in
excess of  1.50%  of each  portfolio's  average  daily net  assets.  The  amount
reimbursed,  however, shall not exceed the amount of the investment advisory and
management fee paid  by the  portfolio for such  period. During  the year  ended
December  31, 1996, FBL Investment further agreed to reimburse any portfolio, to
the extent that  annual operating  expenses, including  the investment  advisory
fee, exceed 0.55%.
 
    Certain  officers  and  trustees  of  the  Fund  are  also  officers  of FBL
Investment and  its indirect  parent,  Farm Bureau  Life Insurance  Company.  At
December  31, 1996, all of the shares of each portfolio are owned by Farm Bureau
Life Insurance Company, Farm Bureau Life  Variable Account and Farm Bureau  Life
Annuity Account.
 
                                       34
<PAGE>
FBL VARIABLE INSURANCE SERIES FUND
NOTES TO FINANCIAL STATEMENTS (CONTINUED)
 
4. CAPITAL SHARE TRANSACTIONS
    The Fund has an unlimited number of shares of beneficial interest authorized
with no par value. Net assets as of December 31, 1996 consisted of:
 
<TABLE>
<CAPTION>
                                                                                PORTFOLIO
                                                -------------------------------------------------------------------------
                                                                            HIGH
                                                   VALUE     HIGH GRADE    YIELD                    MONEY        BLUE
                                                  GROWTH        BOND        BOND       MANAGED      MARKET       CHIP
                                                -----------  ----------  ----------  -----------  ----------  -----------
<S>                                             <C>          <C>         <C>         <C>          <C>         <C>
Paid-in capital...............................  $24,479,215  $3,456,475  $5,827,420  $24,133,530  $3,819,261  $10,951,884
Accumulated undistributed net investment
 income.......................................        1,732                                1,831                    1,327
Accumulated undistributed net realized gain
 (loss) from investment transactions..........      353,583     (16,812)        424      496,072                      426
Net unrealized appreciation (depreciation) of
 investments..................................    2,353,921      94,892     101,248    1,390,842                3,539,480
                                                -----------  ----------  ----------  -----------  ----------  -----------
Net Assets....................................  $27,188,451  $3,534,555  $5,929,092  $26,022,275  $3,819,261  $14,493,117
                                                -----------  ----------  ----------  -----------  ----------  -----------
                                                -----------  ----------  ----------  -----------  ----------  -----------
</TABLE>
 
    Transactions  in shares  of beneficial interest  for each  portfolio were as
follows:
 
<TABLE>
<CAPTION>
                                                       SHARES ISSUED IN
                                                        REINVESTMENT OF
                                                         DIVIDENDS AND
                                  SHARES SOLD            DISTRIBUTIONS         SHARES REDEEMED          NET INCREASE
                            -----------------------  ---------------------  ---------------------  ----------------------
PORTFOLIO                     SHARES      AMOUNT      SHARES      AMOUNT     SHARES      AMOUNT     SHARES      AMOUNT
- --------------------------  ----------  -----------  ---------  ----------  ---------  ----------  ---------  -----------
<S>                         <C>         <C>          <C>        <C>         <C>        <C>         <C>        <C>
Year ended December 31,
  1996:
 
Value Growth..............     630,601  $ 8,257,518    193,097  $2,535,371     76,748  $  987,931    746,950  $ 9,804,958
High Grade Bond...........     118,456    1,161,045     22,255     218,638    102,472   1,003,467     38,239      376,216
High Yield Bond...........     175,655    1,721,491     49,648     488,516    123,493   1,212,185    101,810      997,822
Managed...................     707,222    8,908,422    206,306   2,556,129     51,812     645,478    861,716   10,819,073
Money Market..............  10,259,993   10,259,993     56,274      56,274  9,655,579   9,655,579    660,688      660,688
Blue Chip.................     275,107    6,334,955     10,689     267,652     20,476     484,830    265,320    6,117,777
 
Year ended December 31,
  1995:
Value Growth..............     281,715  $ 3,253,282     78,153  $  960,501     56,399  $  648,111    303,469  $ 3,565,672
High Grade Bond...........      67,261      661,381     16,525     162,663     22,105     217,348     61,681      606,696
High Yield Bond...........     151,202    1,473,718     33,048     321,812    135,449   1,330,400     48,801      465,130
Managed...................     249,343    2,771,019     76,919     897,643     71,102     781,374    255,160    2,887,288
Money Market..............   4,079,456    4,079,456     22,654      22,654  3,601,351   3,601,351    500,759      500,759
Blue Chip.................     126,819    2,376,704      4,762      98,331     15,781     294,156    115,800    2,180,879
</TABLE>
 
                                       35
<PAGE>
FBL VARIABLE INSURANCE SERIES FUND
NOTES TO FINANCIAL STATEMENTS (CONTINUED)
 
5. INVESTMENT TRANSACTIONS
    For the year  ended December  31, 1996,  the cost  of investment  securities
purchased and proceeds from investment securities sold (not including short-term
investments and U.S. Government securities) by portfolio, were as follows:
 
<TABLE>
<CAPTION>
PORTFOLIO                                         PURCHASES      SALES
- -----------------------------------------------  -----------  -----------
<S>                                              <C>          <C>
Value Growth...................................  $15,149,979  $11,690,469
High Grade Bond................................      993,058      890,313
High Yield Bond................................    2,518,414    1,403,395
Managed........................................    9,970,884   10,035,710
Blue Chip......................................    5,508,806      231,339
</TABLE>
 
    At   December  31,  1996,  net  unrealized  appreciation  (depreciation)  of
investments by portfolio was composed of the following:
 
<TABLE>
<CAPTION>
                                                                              NET UNREALIZED
                                                      GROSS UNREALIZED         APPRECIATION
                                                ----------------------------  (DEPRECIATION)
PORTFOLIO                                       APPRECIATION   DEPRECIATION   OF INVESTMENTS
- ----------------------------------------------  -------------  -------------  ---------------
<S>                                             <C>            <C>            <C>
Value Growth..................................   $ 2,583,173    $  (229,252)    $ 2,353,921
High Grade Bond...............................       102,798         (7,906)         94,892
High Yield Bond...............................       239,160       (137,912)        101,248
Managed.......................................     1,545,832       (154,990)      1,390,842
Blue Chip.....................................     3,610,371        (70,891)      3,539,480
</TABLE>
 
6. DIVIDENDS AND DISTRIBUTIONS TO SHAREHOLDERS
    Dividends from  net  investment  income for  the  following  portfolios  are
declared  daily  and were  payable  on the  last business  day  of the  month as
follows:
 
<TABLE>
<CAPTION>
                                                                               PORTFOLIO
                                                                   ---------------------------------
                                                                     HIGH       HIGH
                                                                     GRADE      YIELD       MONEY
PAYABLE DATE                                                         BOND       BOND       MARKET
- -----------------------------------------------------------------  ---------  ---------  -----------
<S>                                                                <C>        <C>        <C>
January 31, 1996.................................................  $   .0646  $   .0728   $   .0045
February 29, 1996................................................      .0617      .0694       .0038
March 29, 1996...................................................      .0600      .0682       .0037
April 30, 1996...................................................      .0612      .0732       .0041
May 31, 1996.....................................................      .0610      .0708       .0040
June 28, 1996....................................................      .0553      .0654       .0035
July 31, 1996....................................................      .0614      .0751       .0043
August 30, 1996..................................................      .0598      .0698       .0040
September 30, 1996...............................................      .0591      .0725       .0040
October 31, 1996.................................................      .0577      .0682       .0041
November 29, 1996................................................      .0563      .0665       .0039
December 31, 1996................................................      .0599      .0708       .0042
                                                                   ---------  ---------  -----------
Total dividends per share........................................  $   .7180  $   .8427   $   .0481
                                                                   ---------  ---------  -----------
                                                                   ---------  ---------  -----------
</TABLE>
 
                                       36
<PAGE>
FBL VARIABLE INSURANCE SERIES FUND
NOTES TO FINANCIAL STATEMENTS (CONTINUED)
 
6. DIVIDENDS AND DISTRIBUTIONS TO SHAREHOLDERS (CONTINUED)
    In addition, dividends and distributions to shareholders from net investment
income and net  realized gain on  investment transactions were  paid during  the
year ended December 31, 1996, for the following portfolios:
 
ORDINARY INCOME DIVIDENDS:
 
<TABLE>
<CAPTION>
                                                                                             PERCENT
                                                                            DIVIDEND     QUALIFYING FOR
                                        DECLARATION   RECORD     PAYABLE   AMOUNT PER     DEDUCTION BY
PORTFOLIO                                  DATE        DATE       DATE        SHARE       CORPORATIONS
- --------------------------------------  -----------  ---------  ---------  -----------  -----------------
<S>                                     <C>          <C>        <C>        <C>          <C>
Value Growth..........................    12/23/96    12/30/96   12/30/96   $  0.3000              58%
Managed...............................    12/23/96    12/30/96   12/30/96      0.5000              47
Blue Chip.............................    12/23/96    12/30/96   12/30/96      0.3425              80
</TABLE>
 
CAPITAL GAINS DISTRIBUTIONS:
 
<TABLE>
<CAPTION>
                                                                            DIVIDEND
                                        DECLARATION   RECORD     PAYABLE   AMOUNT PER
PORTFOLIO                                  DATE        DATE       DATE        SHARE
- --------------------------------------  -----------  ---------  ---------  -----------
<S>                                     <C>          <C>        <C>        <C>          <C>
Value Growth..........................    12/23/96    12/30/96   12/30/96   $  1.0525
High Yield Bond.......................    12/23/96    12/30/96   12/30/96      0.1113
Managed...............................    12/23/96    12/30/96   12/30/96      0.8450
Blue Chip.............................    12/23/96    12/30/96   12/30/96      0.1200
</TABLE>
 
    The  capital gains  distributions related  to the  Value Growth,  High Yield
Bond, Managed and Blue Chip Portfolios include net short-term realized gains  of
$1,785,538  ($0.9525 per share),  $9,333 ($0.0153 per  share), $940,732 ($0.4950
per share) and  $7,234 ($0.0125 per  share), respectively, that  are taxable  to
shareholders as ordinary income dividends.
 
                                       37
<PAGE>
FBL VARIABLE INSURANCE SERIES FUND
FINANCIAL HIGHLIGHTS
YEARS ENDED DECEMBER 31, 1996, 1995, 1994, 1993 AND 1992
 
<TABLE>
<CAPTION>
                                                                                                  VALUE
                                                                                                  GROWTH
                                                                                                PORTFOLIO
                                                                        ----------------------------------------------------------
                                                                           1996        1995        1994        1993        1992
                                                                        ----------  ----------  ----------  ----------  ----------
<S>                                                                     <C>         <C>         <C>         <C>         <C>
Net asset value, beginning of year....................................  $   12.31   $   10.39   $   11.52   $   10.05   $    9.55
  Income From Investment Operations
    Net investment income.............................................       0.35        0.55        0.48        0.63        0.46
    Net gains or losses on securities (both realized and unrealized)..       1.82        2.13       (0.99)       2.10        0.54
                                                                        ----------  ----------  ----------  ----------  ----------
  Total from investment operations....................................       2.17        2.68       (0.51)       2.73        1.00
                                                                        ----------  ----------  ----------  ----------  ----------
  Less Distributions
    Dividends (from net investment income)............................      (0.30)      (0.50)      (0.36)      (0.57)      (0.50)
    Distributions (from capital gains)................................      (1.05)      (0.26)      (0.11)      (0.69)
    Distributions in excess of net realized gains.....................                              (0.15)
                                                                        ----------  ----------  ----------  ----------  ----------
  Total distributions.................................................      (1.35)      (0.76)      (0.62)      (1.26)      (0.50)
                                                                        ----------  ----------  ----------  ----------  ----------
Net asset value, end of year..........................................  $   13.13   $   12.31   $   10.39   $   11.52   $   10.05
                                                                        ----------  ----------  ----------  ----------  ----------
                                                                        ----------  ----------  ----------  ----------  ----------
Total Return:
  Total investment return based on net asset value (1)................      17.65%      25.87%      -4.43%      27.20%      10.46%
Ratios/Supplemental Data:
  Net assets, end of year (000's omitted).............................  $  27,188   $  16,295   $  10,603   $   4,730   $   3,017
  Ratio of net expenses to average net assets.........................       0.55%       0.55%       0.55%       0.55%       0.55%
  Ratio of net income to average net assets...........................       2.68%       4.78%       4.35%       5.41%       4.54%
  Portfolio turnover rate.............................................         72%         98%         78%         81%         88%
  Average commission rate per share (2)...............................  $  0.0536
 
Information assuming no voluntary reimbursement or
 waiver by FBL Investment of excess operating expenses
 (see NOTE 3):
  Per share net investment income.....................................  $    0.33   $    0.53   $    0.46   $    0.59   $    0.41
  Ratio of expenses to average net assets.............................       0.69%       0.72%       0.77%       0.89%       1.09%
  Amount reimbursed...................................................  $  29,686   $  22,306   $  16,706   $  13,353   $  17,373
</TABLE>
 
Note: Per  share amounts have been calculated on  the basis of monthly per share
      amounts (using  average monthly  outstanding shares)  accumulated for  the
      period.
(1) Total investment return is calculated assuming an initial investment made at
    the  net asset  value at  the beginning of  the period,  reinvestment of all
    dividends and  distributions  at net  asset  value during  the  period,  and
    redemption on the last day of the period.
(2) Average  commission rate  per share  disclosure is  not required  for fiscal
    years prior to December 31, 1996.
 
See accompanying notes.
 
                                       38
<PAGE>
 
<TABLE>
<CAPTION>
                           HIGH                                                        HIGH
                        GRADE BOND                                                  YIELD BOND
                        PORTFOLIO                                                   PORTFOLIO
- ----------------------------------------------------------  ----------------------------------------------------------
   1996        1995        1994        1993        1992        1996        1995        1994        1993        1992
- ----------  ----------  ----------  ----------  ----------  ----------  ----------  ----------  ----------  ----------
<S>         <C>         <C>         <C>         <C>         <C>         <C>         <C>         <C>         <C>
$    9.98   $    9.44   $   10.23   $   10.14   $   10.15   $    9.69   $    9.32   $   10.44   $    9.92   $    9.65
     0.72        0.77        0.76        0.77        0.83        0.84        0.87        0.91        0.95        0.98
    (0.15)       0.54       (0.79)       0.09       (0.01)       0.33        0.49       (1.01)       0.58        0.27
- ----------  ----------  ----------  ----------  ----------  ----------  ----------  ----------  ----------  ----------
     0.57        1.31       (0.03)       0.86        0.82        1.17        1.36       (0.10)       1.53        1.25
- ----------  ----------  ----------  ----------  ----------  ----------  ----------  ----------  ----------  ----------
         )
    (0.72       (0.77)      (0.76)      (0.77)      (0.83)      (0.84)      (0.87)      (0.91)      (0.95)      (0.98)
                                                                (0.11)      (0.12)      (0.11)      (0.06)
- ----------  ----------  ----------  ----------  ----------  ----------  ----------  ----------  ----------  ----------
    (0.72)      (0.77)      (0.76)      (0.77)      (0.83)      (0.95)      (0.99)      (1.02)      (1.01)      (0.98)
- ----------  ----------  ----------  ----------  ----------  ----------  ----------  ----------  ----------  ----------
$    9.83   $    9.98   $    9.44   $   10.23   $   10.14   $    9.91   $    9.69   $    9.32   $   10.44   $    9.92
- ----------  ----------  ----------  ----------  ----------  ----------  ----------  ----------  ----------  ----------
- ----------  ----------  ----------  ----------  ----------  ----------  ----------  ----------  ----------  ----------
         %
     5.94       14.26%      -0.26%       8.74%       8.40%      12.65%      15.15%      -1.01%      15.05%      13.39%
    3,535
$           $   3,208   $   2,452   $   2,349   $   3,704   $   5,929   $   4,810   $   4,172   $   4,536   $   4,015
     0.55%       0.55%       0.55%       0.55%       0.55%       0.55%       0.55%       0.55%       0.55%       0.55%
     7.22%       7.81%       7.76%       7.58%       8.19%       8.47%       8.96%       9.17%       9.25%       9.88%
       32%         14%         15%         38%         16%         30%         32%         10%         58%         35%
 
     0.70
$           $    0.74   $    0.73   $    0.76   $    0.80   $    0.81   $    0.84   $    0.88   $    0.92   $    0.88
     0.80%       0.84%       0.80%       0.72%       0.79%       0.87%       0.88%       0.84%       0.85%       0.99%
$   8,233   $   8,255   $   6,207   $   5,343   $   9,004   $  17,094   $  15,105   $  12,667   $  12,872   $  17,310
</TABLE>
 
                                       39
<PAGE>
FBL VARIABLE INSURANCE SERIES FUND
FINANCIAL HIGHLIGHTS (CONTINUED)
 
<TABLE>
<CAPTION>
                                                                                                 MANAGED
                                                                                                PORTFOLIO
                                                                        ----------------------------------------------------------
                                                                           1996        1995        1994        1993        1992
                                                                        ----------  ----------  ----------  ----------  ----------
<S>                                                                     <C>         <C>         <C>         <C>         <C>
Net asset value, beginning of year....................................  $   11.71   $    9.93   $   11.33   $   10.06   $    9.27
  Income From Investment Operations
    Net investment income.............................................       0.60        0.65        0.66        0.72        0.69
    Net gains or losses on securities (both realized and unrealized)..       1.44        1.90       (1.22)       1.57        0.77
                                                                        ----------  ----------  ----------  ----------  ----------
  Total from investment operations....................................       2.04        2.55       (0.56)       2.29        1.46
                                                                        ----------  ----------  ----------  ----------  ----------
  Less Distributions
    Dividends (from net investment income)............................      (0.50)      (0.59)      (0.54)      (0.63)      (0.67)
    Distributions (from capital gains)................................      (0.85)      (0.18)      (0.23)      (0.39)
    Distributions in excess of net realized gains.....................                              (0.07)
                                                                        ----------  ----------  ----------  ----------  ----------
  Total distributions.................................................      (1.35)      (0.77)      (0.84)      (1.02)      (0.67)
                                                                        ----------  ----------  ----------  ----------  ----------
Net asset value, end of year..........................................  $   12.40   $   11.71   $    9.93   $   11.33   $   10.06
                                                                        ----------  ----------  ----------  ----------  ----------
                                                                        ----------  ----------  ----------  ----------  ----------
Total Return:
  Total investment return based on net asset value (1)................      17.39%      25.69%      (4.96)%     22.71%      15.72%
Ratios/Supplemental Data:
  Net assets, end of year (000's omitted).............................  $  26,022   $  14,487   $   9,758   $   4,951   $   3,019
  Ratio of net expenses to average net assets.........................       0.55%       0.55%       0.55%       0.55%       0.55%
  Ratio of net income to average net assets...........................       4.73%       5.80%       6.23%       6.23%       7.00%
  Portfolio turnover rate.............................................         82%         48%         59%         59%         60%
  Average commission rate per share (2)...............................  $  0.0534
Information assuming no voluntary reimbursement or waiver by FBL
 Investment of excess operating expenses (see NOTE 3):
  Per share net investment income.....................................  $    0.57   $    0.62   $    0.63   $    0.67   $    0.64
  Ratio of expenses to average net assets.............................       0.75%       0.77%       0.80%       0.91%       1.13%
  Amount reimbursed...................................................  $  38,874   $  26,008   $  19,147   $  15,076   $  16,480
</TABLE>
 
                                       40
<PAGE>
 
<TABLE>
<CAPTION>
                       MONEY MARKET                                                 BLUE CHIP
                        PORTFOLIO                                                   PORTFOLIO
- ----------------------------------------------------------  ----------------------------------------------------------
   1996        1995        1994        1993        1992        1996        1995        1994        1993        1992
- ----------  ----------  ----------  ----------  ----------  ----------  ----------  ----------  ----------  ----------
<S>         <C>         <C>         <C>         <C>         <C>         <C>         <C>         <C>         <C>
$    1.00   $    1.00   $    1.00   $    1.00   $    1.00   $   20.70   $   15.82   $   15.67   $   13.96   $   12.91
     0.05        0.05        0.04        0.03        0.03        0.45        0.39        0.34        0.29        0.29
                                                                 3.99        4.80        0.07        1.72        1.05
- ----------  ----------  ----------  ----------  ----------  ----------  ----------  ----------  ----------  ----------
     0.05        0.05        0.04        0.03        0.03        4.44        5.19        0.41        2.01        1.34
- ----------  ----------  ----------  ----------  ----------  ----------  ----------  ----------  ----------  ----------
    (0.05)      (0.05)      (0.04)      (0.03)      (0.03)      (0.34)      (0.31)      (0.26)      (0.30)      (0.29)
                                                                (0.12)
- ----------  ----------  ----------  ----------  ----------  ----------  ----------  ----------  ----------  ----------
    (0.05)      (0.05)      (0.04)      (0.03)      (0.03)      (0.46)      (0.31)      (0.26)      (0.30)      (0.29)
- ----------  ----------  ----------  ----------  ----------  ----------  ----------  ----------  ----------  ----------
$    1.00   $    1.00   $    1.00   $    1.00   $    1.00   $   24.68   $   20.70   $   15.82   $   15.67   $   13.96
- ----------  ----------  ----------  ----------  ----------  ----------  ----------  ----------  ----------  ----------
- ----------  ----------  ----------  ----------  ----------  ----------  ----------  ----------  ----------  ----------
     4.90%       5.47%       3.68%       2.68%       3.28%      21.43%      32.81%       2.65%      14.36%      10.38%
$   3,819   $   3,159   $   2,658   $   2,300   $   2,530   $  14,493   $   6,665   $   3,262   $   1,654   $   1,502
     0.55%       0.55%       0.55%       0.55%       0.55%       0.48%       0.55%       0.55%       0.55%       0.55%
     4.58%       5.27%       3.63%       2.65%       3.30%       1.92%       2.07%       2.19%       1.92%       2.13%
        0%          0%          0%          0%          0%          2%          1%          0%          0%          0%
                                                            $  0.0825
$    0.04   $    0.05   $    0.04   $    0.02   $    0.03               $    0.38   $    0.30   $    0.24   $    0.22
     0.82%       0.90%       0.82%       0.79%       0.93%                   0.59%       0.81%       0.89%       1.06%
$   9,569   $   9,816   $   7,157   $   5,838   $  10,168               $   1,952   $   6,360   $   5,495   $   7,320
</TABLE>
 
                                       41
<PAGE>
REPORT OF INDEPENDENT AUDITORS
 
The Board of Trustees and Shareholders
FBL Variable Insurance Series Fund
 
    We  have  audited the  accompanying  statements of  assets  and liabilities,
including the schedules of  investments, of FBL  Variable Insurance Series  Fund
(comprising,  respectively, the Value Growth, High  Grade Bond, High Yield Bond,
Managed, Money Market and Blue Chip Portfolios) as of December 31, 1996, and the
related statements of  operations for  the year  then ended,  the statements  of
changes in net assets for each of the two years in the period then ended and the
financial  highlights for each of the five years in the period then ended. These
financial statements  and financial  highlights are  the responsibility  of  the
Fund's  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  and financial  highlights. Our  procedures included  confirmation of
securities owned as of December 31,  1996, by correspondence with the  custodian
and brokers. 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, the financial  statements and financial highlights referred
to above present  fairly, in all  material respects, the  financial position  of
each of the respective portfolios constituting the FBL Variable Insurance Series
Fund  at December 31,  1996, the results  of their operations  for the year then
ended, the changes in their net assets for  each of the two years in the  period
then  ended, and  the financial  highlights for  each of  the five  years in the
period then ended, in conformity with generally accepted accounting principles.
 
Des Moines, Iowa                                           /s/ Ernst & Young LLP
January 31, 1997


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